[PATCH 00/10] Move part of cros-ec out of MFD subsystem

[PATCH 00/10] Move part of cros-ec out of MFD subsystem

[Enric Balletbo i Serra]

Hi,

This is the first attempt to clean up a bit more the cros-ec drivers
to have a better separation on what is part of the MFD subsystem and what
is part of platform/chrome.

It'd be really nice have some reviews, acks and tested on different
platforms from the chromiumos people before merge all this patchset, as
this moves a lot of code.

The major changes introduced by this patchset are:
1. Move the core driver to platform/chrome, as is not really related to
an MFD device driver.
2. Create a new misc chardev driver to replace the chardev bits from
cros-ec-dev (MFD)
3. Added some convenience structs in cros-ec-dev (MFD) to easy add more
subdrivers and avoid to add more boiler plate.

Once applied we have moved all the code to platform/chrome except the
cros-ec-dev driver, which is the one that instantiates the different
subdrivers as cells of the MFD device.

I tested the following patches on Veyron, Kevin, Samus, Peach Pi and
Peach Pit without noticing any problem, but they would need a lot of
more tests. I'll continue testing while the reviewing process of this
patchset.

Waiting for your feedback,
 Enric


Enric Balletbo i Serra (10):
  mfd / platform: cros_ec: Handle chained ECs as platform devices
  mfd / platform: cros_ec: Move cros-ec core driver out from MFD
  mfd / platform: cros_ec: Miscellaneous character device to talk with
    the EC
  mfd: cros_ec: Switch to use the new cros-ec-chardev driver
  mfd / platform: cros_ec: Rename config to a better name
  mfd / platform: cros_ec: Reorganize platform and mfd includes
  mfd: cros_ec: Update with SPDX Licence identifier and fix description
  mfd: cros_ec: Use kzalloc and cros_ec_cmd_xfer_status helper
  mfd: cros_ec: Add convenience struct to define dedicated CrOS EC MCUs
  mfd: cros_ec: Add convenience struct to define autodetectable CrOS EC
    subdevices

 Documentation/ioctl/ioctl-number.txt          |   2 +-
 drivers/extcon/Kconfig                        |   2 +-
 drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
 drivers/hid/Kconfig                           |   2 +-
 drivers/hid/hid-google-hammer.c               |   4 +-
 drivers/i2c/busses/Kconfig                    |   2 +-
 drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
 drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
 drivers/iio/common/cros_ec_sensors/Kconfig    |   2 +-
 .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
 .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
 drivers/iio/light/cros_ec_light_prox.c        |   3 +-
 drivers/iio/pressure/cros_ec_baro.c           |   3 +-
 drivers/input/keyboard/Kconfig                |   2 +-
 drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
 drivers/media/platform/Kconfig                |   3 +-
 .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
 drivers/mfd/Kconfig                           |  26 +-
 drivers/mfd/Makefile                          |   4 +-
 drivers/mfd/cros_ec_dev.c                     | 433 +++++-------------
 drivers/platform/chrome/Kconfig               |  48 +-
 drivers/platform/chrome/Makefile              |   2 +
 drivers/{mfd => platform/chrome}/cros_ec.c    |  64 +--
 drivers/platform/chrome/cros_ec_chardev.c     | 279 +++++++++++
 drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
 drivers/platform/chrome/cros_ec_i2c.c         |  12 +-
 drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
 drivers/platform/chrome/cros_ec_lpc.c         |   7 +-
 drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
 drivers/platform/chrome/cros_ec_proto.c       |   3 +-
 drivers/platform/chrome/cros_ec_rpmsg.c       |   6 +-
 drivers/platform/chrome/cros_ec_spi.c         |  12 +-
 drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
 drivers/platform/chrome/cros_ec_trace.c       |   2 +-
 drivers/platform/chrome/cros_ec_trace.h       |   4 +-
 drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
 drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
 drivers/power/supply/Kconfig                  |   2 +-
 drivers/power/supply/cros_usbpd-charger.c     |   5 +-
 drivers/pwm/Kconfig                           |   2 +-
 drivers/pwm/pwm-cros-ec.c                     |   4 +-
 drivers/rtc/Kconfig                           |   2 +-
 drivers/rtc/rtc-cros-ec.c                     |   3 +-
 .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
 include/linux/mfd/cros_ec.h                   | 302 +-----------
 .../{mfd => platform_data}/cros_ec_commands.h |   0
 include/linux/platform_data/cros_ec_proto.h   | 315 +++++++++++++
 .../uapi/linux/cros_ec_chardev.h              |  18 +-
 sound/soc/codecs/cros_ec_codec.c              |   4 +-
 sound/soc/qcom/Kconfig                        |   2 +-
 50 files changed, 902 insertions(+), 732 deletions(-)
 rename drivers/{mfd => platform/chrome}/cros_ec.c (85%)
 create mode 100644 drivers/platform/chrome/cros_ec_chardev.c
 rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
 create mode 100644 include/linux/platform_data/cros_ec_proto.h
 rename drivers/mfd/cros_ec_dev.h => include/uapi/linux/cros_ec_chardev.h (70%)

-- 
2.20.1

[PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Enric Balletbo i Serra]

Now, the ChromeOS EC core driver has nothing related to an MFD device, so
move that driver from the MFD subsystem to the platform/chrome subsystem.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---

 drivers/extcon/Kconfig                     |  2 +-
 drivers/hid/Kconfig                        |  2 +-
 drivers/i2c/busses/Kconfig                 |  2 +-
 drivers/iio/common/cros_ec_sensors/Kconfig |  2 +-
 drivers/input/keyboard/Kconfig             |  2 +-
 drivers/media/platform/Kconfig             |  3 +--
 drivers/mfd/Kconfig                        | 14 +-------------
 drivers/mfd/Makefile                       |  2 --
 drivers/platform/chrome/Kconfig            | 21 +++++++++++++++++----
 drivers/platform/chrome/Makefile           |  1 +
 drivers/{mfd => platform/chrome}/cros_ec.c |  0
 drivers/power/supply/Kconfig               |  2 +-
 drivers/pwm/Kconfig                        |  2 +-
 drivers/rtc/Kconfig                        |  2 +-
 sound/soc/qcom/Kconfig                     |  2 +-
 15 files changed, 29 insertions(+), 30 deletions(-)
 rename drivers/{mfd => platform/chrome}/cros_ec.c (100%)

diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index 6f5af4196b8d..0ebc599c5e51 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -169,7 +169,7 @@ config EXTCON_USB_GPIO
 
 config EXTCON_USBC_CROS_EC
 	tristate "ChromeOS Embedded Controller EXTCON support"
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	help
 	  Say Y here to enable USB Type C cable detection extcon support when
 	  using Chrome OS EC based USB Type-C ports.
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 3872e03d9a59..a958b9625bba 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -376,7 +376,7 @@ config HOLTEK_FF
 
 config HID_GOOGLE_HAMMER
 	tristate "Google Hammer Keyboard"
-	depends on USB_HID && LEDS_CLASS && MFD_CROS_EC
+	depends on USB_HID && LEDS_CLASS && CROS_EC
 	---help---
 	Say Y here if you have a Google Hammer device.
 
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index ee5dfb5aee2a..42a224d08ec7 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -1336,7 +1336,7 @@ config I2C_SIBYTE
 
 config I2C_CROS_EC_TUNNEL
 	tristate "ChromeOS EC tunnel I2C bus"
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	help
 	  If you say yes here you get an I2C bus that will tunnel i2c commands
 	  through to the other side of the ChromeOS EC to the i2c bus
diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig
index f9bf7ff7fcaf..55999104cd44 100644
--- a/drivers/iio/common/cros_ec_sensors/Kconfig
+++ b/drivers/iio/common/cros_ec_sensors/Kconfig
@@ -4,7 +4,7 @@
 #
 config IIO_CROS_EC_SENSORS_CORE
 	tristate "ChromeOS EC Sensors Core"
-	depends on SYSFS && MFD_CROS_EC
+	depends on SYSFS && CROS_EC
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	help
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 7c4f19dab34f..64555cc8d83e 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -729,7 +729,7 @@ config KEYBOARD_W90P910
 config KEYBOARD_CROS_EC
 	tristate "ChromeOS EC keyboard"
 	select INPUT_MATRIXKMAP
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	help
 	  Say Y here to enable the matrix keyboard used by ChromeOS devices
 	  and implemented on the ChromeOS EC. You must enable one bus option
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index f2b5f27ebacb..adec7a0bfe1e 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -558,10 +558,9 @@ if CEC_PLATFORM_DRIVERS
 
 config VIDEO_CROS_EC_CEC
 	tristate "ChromeOS EC CEC driver"
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	select CEC_CORE
 	select CEC_NOTIFIER
-	select CHROME_PLATFORMS
 	select CROS_EC_PROTO
 	help
 	  If you say yes here you will get support for the
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index a17d275bf1d4..ad0a5de74ef2 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -211,21 +211,9 @@ config MFD_AXP20X_RSB
 	  components like regulators or the PEK (Power Enable Key) under the
 	  corresponding menus.
 
-config MFD_CROS_EC
-	tristate "ChromeOS Embedded Controller"
-	select MFD_CORE
-	select CHROME_PLATFORMS
-	select CROS_EC_PROTO
-	depends on X86 || ARM || ARM64 || COMPILE_TEST
-	help
-	  If you say Y here you get support for the ChromeOS Embedded
-	  Controller (EC) providing keyboard, battery and power services.
-	  You also need to enable the driver for the bus you are using. The
-	  protocol for talking to the EC is defined by the bus driver.
-
 config MFD_CROS_EC_CHARDEV
 	tristate "Chrome OS Embedded Controller userspace device interface"
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	---help---
 	  This driver adds support to talk with the ChromeOS EC from userspace.
 
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 52b1a90ff515..32327dc6bb45 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -13,8 +13,6 @@ obj-$(CONFIG_MFD_ASIC3)		+= asic3.o tmio_core.o
 obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835-pm.o
 obj-$(CONFIG_MFD_BCM590XX)	+= bcm590xx.o
 obj-$(CONFIG_MFD_BD9571MWV)	+= bd9571mwv.o
-cros_ec_core-objs		:= cros_ec.o
-obj-$(CONFIG_MFD_CROS_EC)	+= cros_ec_core.o
 obj-$(CONFIG_MFD_CROS_EC_CHARDEV) += cros_ec_dev.o
 obj-$(CONFIG_MFD_EXYNOS_LPASS)	+= exynos-lpass.o
 
diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
index 35bb5a2663f0..9417b982ad92 100644
--- a/drivers/platform/chrome/Kconfig
+++ b/drivers/platform/chrome/Kconfig
@@ -50,9 +50,22 @@ config CHROMEOS_TBMC
 	  To compile this driver as a module, choose M here: the
 	  module will be called chromeos_tbmc.
 
+config CROS_EC
+	tristate "ChromeOS Embedded Controller"
+	select CROS_EC_PROTO
+	depends on X86 || ARM || ARM64 || COMPILE_TEST
+	help
+	  If you say Y here you get support for the ChromeOS Embedded
+	  Controller (EC) providing keyboard, battery and power services.
+	  You also need to enable the driver for the bus you are using. The
+	  protocol for talking to the EC is defined by the bus driver.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cros_ec.
+
 config CROS_EC_I2C
 	tristate "ChromeOS Embedded Controller (I2C)"
-	depends on MFD_CROS_EC && I2C
+	depends on CROS_EC && I2C
 
 	help
 	  If you say Y here, you get support for talking to the ChromeOS
@@ -62,7 +75,7 @@ config CROS_EC_I2C
 
 config CROS_EC_RPMSG
 	tristate "ChromeOS Embedded Controller (rpmsg)"
-	depends on MFD_CROS_EC && RPMSG && OF
+	depends on CROS_EC && RPMSG && OF
 	help
 	  If you say Y here, you get support for talking to the ChromeOS EC
 	  through rpmsg. This uses a simple byte-level protocol with a
@@ -87,7 +100,7 @@ config CROS_EC_ISHTP
 
 config CROS_EC_SPI
 	tristate "ChromeOS Embedded Controller (SPI)"
-	depends on MFD_CROS_EC && SPI
+	depends on CROS_EC && SPI
 
 	---help---
 	  If you say Y here, you get support for talking to the ChromeOS EC
@@ -97,7 +110,7 @@ config CROS_EC_SPI
 
 config CROS_EC_LPC
         tristate "ChromeOS Embedded Controller (LPC)"
-        depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
+        depends on CROS_EC && ACPI && (X86 || COMPILE_TEST)
         help
           If you say Y here, you get support for talking to the ChromeOS EC
           over an LPC bus. This uses a simple byte-level protocol with a
diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
index c5583c48d1e5..ebb57e21923b 100644
--- a/drivers/platform/chrome/Makefile
+++ b/drivers/platform/chrome/Makefile
@@ -6,6 +6,7 @@ CFLAGS_cros_ec_trace.o:=		-I$(src)
 obj-$(CONFIG_CHROMEOS_LAPTOP)		+= chromeos_laptop.o
 obj-$(CONFIG_CHROMEOS_PSTORE)		+= chromeos_pstore.o
 obj-$(CONFIG_CHROMEOS_TBMC)		+= chromeos_tbmc.o
+obj-$(CONFIG_CROS_EC)			+= cros_ec.o
 obj-$(CONFIG_CROS_EC_I2C)		+= cros_ec_i2c.o
 obj-$(CONFIG_CROS_EC_ISHTP)		+= cros_ec_ishtp.o
 obj-$(CONFIG_CROS_EC_RPMSG)		+= cros_ec_rpmsg.o
diff --git a/drivers/mfd/cros_ec.c b/drivers/platform/chrome/cros_ec.c
similarity index 100%
rename from drivers/mfd/cros_ec.c
rename to drivers/platform/chrome/cros_ec.c
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index dd7da41f230c..e05140771845 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -656,7 +656,7 @@ config CHARGER_RT9455
 
 config CHARGER_CROS_USBPD
 	tristate "ChromeOS EC based USBPD charger"
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	default n
 	help
 	  Say Y here to enable ChromeOS EC based USBPD charger
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index dff5a93f7daa..99946e1bcc73 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -145,7 +145,7 @@ config PWM_CRC
 
 config PWM_CROS_EC
 	tristate "ChromeOS EC PWM driver"
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	help
 	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
 	  Controller.
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 5c0790eed656..4eb311569fc4 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1265,7 +1265,7 @@ config RTC_DRV_ZYNQMP
 
 config RTC_DRV_CROS_EC
 	tristate "Chrome OS EC RTC driver"
-	depends on MFD_CROS_EC
+	depends on CROS_EC
 	help
 	  If you say yes here you will get support for the
 	  Chrome OS Embedded Controller's RTC.
diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index 8e3e86619b35..60086858e920 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -99,7 +99,7 @@ config SND_SOC_MSM8996
 
 config SND_SOC_SDM845
 	tristate "SoC Machine driver for SDM845 boards"
-	depends on QCOM_APR && MFD_CROS_EC && I2C
+	depends on QCOM_APR && CROS_EC && I2C
 	select SND_SOC_QDSP6
 	select SND_SOC_QCOM_COMMON
 	select SND_SOC_RT5663
-- 
2.20.1

[PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Enric Balletbo i Serra]

There is a bit of mess between cros-ec mfd includes and platform
includes. For example, we have a linux/mfd/cros_ec.h include that
exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
we have a linux/mfd/cros_ec_commands.h file that is non related to the
multifunction device (in the sense that is not exporting any function of
the mfd device). This causes crossed includes between mfd and
platform/chrome subsystems and makes the code difficult to read, apart
from creating 'curious' situations where a platform/chrome driver includes
a linux/mfd/cros_ec.h file just to get the exported functions that are
implemented in another platform/chrome driver.

In order to have a better separation on what the cros-ec multifunction
driver does and what the cros-ec core provides move and rework the
affected includes doing:

 - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
 - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
   driver from include/linux/mfd/cros_ec.h to a new file
   include/linux/platform_data/cros_ec_proto.h
 - Update all the drivers with the new includes, so
   - Drivers that only need to know about the protocol include
     - linux/platform_data/cros_ec_proto.h
     - linux/platform_data/cros_ec_commands.h
   - Drivers that need to know about the cros-ec mfd device also include
     - linux/mfd/cros_ec.h

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---

 drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
 drivers/hid/hid-google-hammer.c               |   4 +-
 drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
 drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
 .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
 .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
 drivers/iio/light/cros_ec_light_prox.c        |   3 +-
 drivers/iio/pressure/cros_ec_baro.c           |   3 +-
 drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
 .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
 drivers/mfd/cros_ec_dev.c                     |   3 +-
 drivers/platform/chrome/cros_ec.c             |   3 +-
 drivers/platform/chrome/cros_ec_chardev.c     |   4 +-
 drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
 drivers/platform/chrome/cros_ec_i2c.c         |   4 +-
 drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
 drivers/platform/chrome/cros_ec_lpc.c         |   4 +-
 drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
 drivers/platform/chrome/cros_ec_proto.c       |   3 +-
 drivers/platform/chrome/cros_ec_rpmsg.c       |   4 +-
 drivers/platform/chrome/cros_ec_spi.c         |   4 +-
 drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
 drivers/platform/chrome/cros_ec_trace.c       |   2 +-
 drivers/platform/chrome/cros_ec_trace.h       |   4 +-
 drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
 drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
 drivers/power/supply/cros_usbpd-charger.c     |   5 +-
 drivers/pwm/pwm-cros-ec.c                     |   4 +-
 drivers/rtc/rtc-cros-ec.c                     |   3 +-
 .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
 include/linux/mfd/cros_ec.h                   | 306 -----------------
 .../{mfd => platform_data}/cros_ec_commands.h |   0
 include/linux/platform_data/cros_ec_proto.h   | 315 ++++++++++++++++++
 sound/soc/codecs/cros_ec_codec.c              |   4 +-
 34 files changed, 379 insertions(+), 351 deletions(-)
 rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
 create mode 100644 include/linux/platform_data/cros_ec_proto.h

diff --git a/drivers/extcon/extcon-usbc-cros-ec.c b/drivers/extcon/extcon-usbc-cros-ec.c
index 43c0a936ab82..5290cc2d19d9 100644
--- a/drivers/extcon/extcon-usbc-cros-ec.c
+++ b/drivers/extcon/extcon-usbc-cros-ec.c
@@ -6,10 +6,11 @@
 
 #include <linux/extcon-provider.h>
 #include <linux/kernel.h>
-#include <linux/mfd/cros_ec.h>
 #include <linux/module.h>
 #include <linux/notifier.h>
 #include <linux/of.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c
index ee5e0bdcf078..84f8c127ebdc 100644
--- a/drivers/hid/hid-google-hammer.c
+++ b/drivers/hid/hid-google-hammer.c
@@ -16,9 +16,9 @@
 #include <linux/acpi.h>
 #include <linux/hid.h>
 #include <linux/leds.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/pm_wakeup.h>
 #include <asm/unaligned.h>
diff --git a/drivers/i2c/busses/i2c-cros-ec-tunnel.c b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
index 82bcd9a78759..c551aa96a2e3 100644
--- a/drivers/i2c/busses/i2c-cros-ec-tunnel.c
+++ b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
@@ -5,8 +5,8 @@
 
 #include <linux/module.h>
 #include <linux/i2c.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
index 46bb2e421bb9..fd9a634f741e 100644
--- a/drivers/iio/accel/cros_ec_accel_legacy.c
+++ b/drivers/iio/accel/cros_ec_accel_legacy.c
@@ -18,9 +18,10 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/kernel.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 
 #define DRV_NAME	"cros-ec-accel-legacy"
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
index 17af4e0fd5f8..40dc24ff0ee5 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
@@ -17,8 +17,9 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/kernel.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
index 719a0df5aeeb..fd63315399ac 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
@@ -14,9 +14,10 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/kernel.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 
 static char *cros_ec_loc[] = {
diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
index 308ee6ff2e22..437e0eae9178 100644
--- a/drivers/iio/light/cros_ec_light_prox.c
+++ b/drivers/iio/light/cros_ec_light_prox.c
@@ -15,8 +15,9 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/kernel.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
index 034ce98d6e97..956dc01f1295 100644
--- a/drivers/iio/pressure/cros_ec_baro.c
+++ b/drivers/iio/pressure/cros_ec_baro.c
@@ -15,9 +15,10 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/kernel.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 
 /*
diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
index d56001181598..2b71c5a51f90 100644
--- a/drivers/input/keyboard/cros_ec_keyb.c
+++ b/drivers/input/keyboard/cros_ec_keyb.c
@@ -22,8 +22,8 @@
 #include <linux/slab.h>
 #include <linux/sysrq.h>
 #include <linux/input/matrix_keypad.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 
 #include <asm/unaligned.h>
 
diff --git a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
index 068df9888dbf..2e4e263a4a94 100644
--- a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
+++ b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
@@ -16,8 +16,8 @@
 #include <linux/interrupt.h>
 #include <media/cec.h>
 #include <media/cec-notifier.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 
 #define DRV_NAME	"cros-ec-cec"
 
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
index c7a5dfa36874..5481df4e1216 100644
--- a/drivers/mfd/cros_ec_dev.c
+++ b/drivers/mfd/cros_ec_dev.c
@@ -7,11 +7,12 @@
 
 #include <linux/mfd/core.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/slab.h>
 
 #define DRV_NAME "cros-ec-dev"
diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
index 11fced7917fc..9800597ccd96 100644
--- a/drivers/platform/chrome/cros_ec.c
+++ b/drivers/platform/chrome/cros_ec.c
@@ -21,7 +21,8 @@
 #include <linux/interrupt.h>
 #include <linux/slab.h>
 #include <linux/module.h>
-#include <linux/mfd/cros_ec.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/suspend.h>
 #include <asm/unaligned.h>
 
diff --git a/drivers/platform/chrome/cros_ec_chardev.c b/drivers/platform/chrome/cros_ec_chardev.c
index 1a0a27080026..786b941a60df 100644
--- a/drivers/platform/chrome/cros_ec_chardev.c
+++ b/drivers/platform/chrome/cros_ec_chardev.c
@@ -9,10 +9,10 @@
 #include <linux/device.h>
 #include <linux/fs.h>
 #include <linux/list.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/miscdevice.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c
index 4c2a27f6a6d0..b088d91be9c9 100644
--- a/drivers/platform/chrome/cros_ec_debugfs.c
+++ b/drivers/platform/chrome/cros_ec_debugfs.c
@@ -8,9 +8,10 @@
 #include <linux/delay.h>
 #include <linux/fs.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/poll.h>
 #include <linux/sched.h>
diff --git a/drivers/platform/chrome/cros_ec_i2c.c b/drivers/platform/chrome/cros_ec_i2c.c
index 6bb82dfa7dae..9bd97bc8454b 100644
--- a/drivers/platform/chrome/cros_ec_i2c.c
+++ b/drivers/platform/chrome/cros_ec_i2c.c
@@ -9,8 +9,8 @@
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 
diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c
index d30a6650b0b5..caa26da2c788 100644
--- a/drivers/platform/chrome/cros_ec_lightbar.c
+++ b/drivers/platform/chrome/cros_ec_lightbar.c
@@ -9,8 +9,9 @@
 #include <linux/fs.h>
 #include <linux/kobject.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/sched.h>
 #include <linux/types.h>
diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index 2c7e654cf89c..0c976e95998a 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -16,9 +16,9 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/interrupt.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/printk.h>
 #include <linux/suspend.h>
diff --git a/drivers/platform/chrome/cros_ec_lpc_reg.c b/drivers/platform/chrome/cros_ec_lpc_reg.c
index 0f5cd0ac8b49..dec9a779e209 100644
--- a/drivers/platform/chrome/cros_ec_lpc_reg.c
+++ b/drivers/platform/chrome/cros_ec_lpc_reg.c
@@ -4,8 +4,8 @@
 // Copyright (C) 2016 Google, Inc
 
 #include <linux/io.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 
 #include "cros_ec_lpc_mec.h"
 
diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
index 3d2325197a68..f659f96bda12 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -3,10 +3,11 @@
 //
 // Copyright (C) 2015 Google, Inc
 
-#include <linux/mfd/cros_ec.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/slab.h>
 #include <asm/unaligned.h>
 
diff --git a/drivers/platform/chrome/cros_ec_rpmsg.c b/drivers/platform/chrome/cros_ec_rpmsg.c
index 520e507bfa54..9633e5417686 100644
--- a/drivers/platform/chrome/cros_ec_rpmsg.c
+++ b/drivers/platform/chrome/cros_ec_rpmsg.c
@@ -6,9 +6,9 @@
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/of.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/rpmsg.h>
 #include <linux/slab.h>
diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c
index 2e21f2776063..9006e1872942 100644
--- a/drivers/platform/chrome/cros_ec_spi.c
+++ b/drivers/platform/chrome/cros_ec_spi.c
@@ -6,9 +6,9 @@
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/of.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/spi/spi.h>
diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
index fe0b7614ae1b..0caeb8d0989d 100644
--- a/drivers/platform/chrome/cros_ec_sysfs.c
+++ b/drivers/platform/chrome/cros_ec_sysfs.c
@@ -9,8 +9,9 @@
 #include <linux/fs.h>
 #include <linux/kobject.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/printk.h>
 #include <linux/slab.h>
diff --git a/drivers/platform/chrome/cros_ec_trace.c b/drivers/platform/chrome/cros_ec_trace.c
index 0a76412095a9..6f80ff4532ae 100644
--- a/drivers/platform/chrome/cros_ec_trace.c
+++ b/drivers/platform/chrome/cros_ec_trace.c
@@ -6,7 +6,7 @@
 #define TRACE_SYMBOL(a) {a, #a}
 
 // Generate the list using the following script:
-// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/mfd/cros_ec_commands.h
+// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/platform_data/cros_ec_commands.h
 #define EC_CMDS \
 	TRACE_SYMBOL(EC_CMD_PROTO_VERSION), \
 	TRACE_SYMBOL(EC_CMD_HELLO), \
diff --git a/drivers/platform/chrome/cros_ec_trace.h b/drivers/platform/chrome/cros_ec_trace.h
index 7ae3b89c78b9..0dd4df30fa89 100644
--- a/drivers/platform/chrome/cros_ec_trace.h
+++ b/drivers/platform/chrome/cros_ec_trace.h
@@ -11,8 +11,10 @@
 #if !defined(_CROS_EC_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
 #define _CROS_EC_TRACE_H_
 
+#include <linux/bits.h>
 #include <linux/types.h>
-#include <linux/mfd/cros_ec.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 
 #include <linux/tracepoint.h>
 
diff --git a/drivers/platform/chrome/cros_ec_vbc.c b/drivers/platform/chrome/cros_ec_vbc.c
index 8392a1ec33a7..cffe119e7a7a 100644
--- a/drivers/platform/chrome/cros_ec_vbc.c
+++ b/drivers/platform/chrome/cros_ec_vbc.c
@@ -7,8 +7,9 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/slab.h>
 
 #define DRV_NAME "cros-ec-vbc"
diff --git a/drivers/platform/chrome/cros_usbpd_logger.c b/drivers/platform/chrome/cros_usbpd_logger.c
index 7c7b267626a0..c549a9b49b56 100644
--- a/drivers/platform/chrome/cros_usbpd_logger.c
+++ b/drivers/platform/chrome/cros_usbpd_logger.c
@@ -6,10 +6,11 @@
  */
 
 #include <linux/ktime.h>
-#include <linux/math64.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/math64.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/rtc.h>
 
diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
index 3a9ea94c3de3..6cc7c3910e09 100644
--- a/drivers/power/supply/cros_usbpd-charger.c
+++ b/drivers/power/supply/cros_usbpd-charger.c
@@ -5,9 +5,10 @@
  * Copyright (c) 2014 - 2018 Google, Inc
  */
 
-#include <linux/module.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>
 #include <linux/slab.h>
diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
index 98f6ac6cf6ab..85bea2d40b7d 100644
--- a/drivers/pwm/pwm-cros-ec.c
+++ b/drivers/pwm/pwm-cros-ec.c
@@ -6,8 +6,8 @@
  */
 
 #include <linux/module.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/pwm.h>
 #include <linux/slab.h>
diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c
index 4d6bf9304ceb..6909e01936d9 100644
--- a/drivers/rtc/rtc-cros-ec.c
+++ b/drivers/rtc/rtc-cros-ec.c
@@ -6,8 +6,9 @@
 
 #include <linux/kernel.h>
 #include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <linux/rtc.h>
 #include <linux/slab.h>
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
index ce16445411ac..8a91669f5bed 100644
--- a/include/linux/iio/common/cros_ec_sensors_core.h
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -18,7 +18,8 @@
 
 #include <linux/iio/iio.h>
 #include <linux/irqreturn.h>
-#include <linux/mfd/cros_ec.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 
 enum {
 	CROS_EC_SENSOR_X,
diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index 2a1372d167b9..e0bae49535e1 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -16,184 +16,7 @@
 #ifndef __LINUX_MFD_CROS_EC_H
 #define __LINUX_MFD_CROS_EC_H
 
-#include <linux/cdev.h>
 #include <linux/device.h>
-#include <linux/notifier.h>
-#include <linux/mfd/cros_ec_commands.h>
-#include <linux/mutex.h>
-
-#define CROS_EC_DEV_NAME "cros_ec"
-#define CROS_EC_DEV_FP_NAME "cros_fp"
-#define CROS_EC_DEV_PD_NAME "cros_pd"
-#define CROS_EC_DEV_TP_NAME "cros_tp"
-#define CROS_EC_DEV_ISH_NAME "cros_ish"
-
-/*
- * The EC is unresponsive for a time after a reboot command.  Add a
- * simple delay to make sure that the bus stays locked.
- */
-#define EC_REBOOT_DELAY_MS             50
-
-/*
- * Max bus-specific overhead incurred by request/responses.
- * I2C requires 1 additional byte for requests.
- * I2C requires 2 additional bytes for responses.
- * SPI requires up to 32 additional bytes for responses.
- */
-#define EC_PROTO_VERSION_UNKNOWN	0
-#define EC_MAX_REQUEST_OVERHEAD		1
-#define EC_MAX_RESPONSE_OVERHEAD	32
-
-/*
- * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
- */
-enum {
-	EC_MSG_TX_HEADER_BYTES	= 3,
-	EC_MSG_TX_TRAILER_BYTES	= 1,
-	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
-					EC_MSG_TX_TRAILER_BYTES,
-	EC_MSG_RX_PROTO_BYTES	= 3,
-
-	/* Max length of messages for proto 2*/
-	EC_PROTO2_MSG_BYTES		= EC_PROTO2_MAX_PARAM_SIZE +
-					EC_MSG_TX_PROTO_BYTES,
-
-	EC_MAX_MSG_BYTES		= 64 * 1024,
-};
-
-/**
- * struct cros_ec_command - Information about a ChromeOS EC command.
- * @version: Command version number (often 0).
- * @command: Command to send (EC_CMD_...).
- * @outsize: Outgoing length in bytes.
- * @insize: Max number of bytes to accept from the EC.
- * @result: EC's response to the command (separate from communication failure).
- * @data: Where to put the incoming data from EC and outgoing data to EC.
- */
-struct cros_ec_command {
-	uint32_t version;
-	uint32_t command;
-	uint32_t outsize;
-	uint32_t insize;
-	uint32_t result;
-	uint8_t data[0];
-};
-
-/**
- * struct cros_ec_device - Information about a ChromeOS EC device.
- * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
- * @dev: Device pointer for physical comms device
- * @was_wake_device: True if this device was set to wake the system from
- *                   sleep at the last suspend.
- * @cros_class: The class structure for this device.
- * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
- *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
- *     @bytes: Number of bytes to read. zero means "read a string" (including
- *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
- *             read. Caller must ensure that the buffer is large enough for the
- *             result when reading a string.
- * @max_request: Max size of message requested.
- * @max_response: Max size of message response.
- * @max_passthru: Max sice of passthru message.
- * @proto_version: The protocol version used for this device.
- * @priv: Private data.
- * @irq: Interrupt to use.
- * @id: Device id.
- * @din: Input buffer (for data from EC). This buffer will always be
- *       dword-aligned and include enough space for up to 7 word-alignment
- *       bytes also, so we can ensure that the body of the message is always
- *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
- *       happy. Probably word alignment would be OK, there might be a small
- *       performance advantage to using dword.
- * @dout: Output buffer (for data to EC). This buffer will always be
- *        dword-aligned and include enough space for up to 7 word-alignment
- *        bytes also, so we can ensure that the body of the message is always
- *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
- *        happy. Probably word alignment would be OK, there might be a small
- *        performance advantage to using dword.
- * @din_size: Size of din buffer to allocate (zero to use static din).
- * @dout_size: Size of dout buffer to allocate (zero to use static dout).
- * @wake_enabled: True if this device can wake the system from sleep.
- * @suspended: True if this device had been suspended.
- * @cmd_xfer: Send command to EC and get response.
- *            Returns the number of bytes received if the communication
- *            succeeded, but that doesn't mean the EC was happy with the
- *            command. The caller should check msg.result for the EC's result
- *            code.
- * @pkt_xfer: Send packet to EC and get response.
- * @lock: One transaction at a time.
- * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
- * @host_sleep_v1: True if this EC supports the sleep v1 command.
- * @event_notifier: Interrupt event notifier for transport devices.
- * @event_data: Raw payload transferred with the MKBP event.
- * @event_size: Size in bytes of the event data.
- * @host_event_wake_mask: Mask of host events that cause wake from suspend.
- * @ec: The platform_device used by the mfd driver to interface with the
- *      main EC.
- * @pd: The platform_device used by the mfd driver to interface with the
- *      PD behind an EC.
- */
-struct cros_ec_device {
-	/* These are used by other drivers that want to talk to the EC */
-	const char *phys_name;
-	struct device *dev;
-	bool was_wake_device;
-	struct class *cros_class;
-	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
-			   unsigned int bytes, void *dest);
-
-	/* These are used to implement the platform-specific interface */
-	u16 max_request;
-	u16 max_response;
-	u16 max_passthru;
-	u16 proto_version;
-	void *priv;
-	int irq;
-	u8 *din;
-	u8 *dout;
-	int din_size;
-	int dout_size;
-	bool wake_enabled;
-	bool suspended;
-	int (*cmd_xfer)(struct cros_ec_device *ec,
-			struct cros_ec_command *msg);
-	int (*pkt_xfer)(struct cros_ec_device *ec,
-			struct cros_ec_command *msg);
-	struct mutex lock;
-	bool mkbp_event_supported;
-	bool host_sleep_v1;
-	struct blocking_notifier_head event_notifier;
-
-	struct ec_response_get_next_event_v1 event_data;
-	int event_size;
-	u32 host_event_wake_mask;
-
-	/* The platform devices used by the mfd driver */
-	struct platform_device *ec;
-	struct platform_device *pd;
-};
-
-/**
- * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
- * @sensor_num: Id of the sensor, as reported by the EC.
- */
-struct cros_ec_sensor_platform {
-	u8 sensor_num;
-};
-
-/**
- * struct cros_ec_platform - ChromeOS EC platform information.
- * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
- *           used in /dev/ and sysfs.
- * @cmd_offset: Offset to apply for each command. Set when
- *              registering a device behind another one.
- */
-struct cros_ec_platform {
-	const char *ec_name;
-	u16 cmd_offset;
-};
-
-struct cros_ec_debugfs;
 
 /**
  * struct cros_ec_dev - ChromeOS EC device entry point.
@@ -217,133 +40,4 @@ struct cros_ec_dev {
 
 #define to_cros_ec_dev(dev)  container_of(dev, struct cros_ec_dev, class_dev)
 
-/**
- * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
- * @ec_dev: Device to suspend.
- *
- * This can be called by drivers to handle a suspend event.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_suspend(struct cros_ec_device *ec_dev);
-
-/**
- * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
- * @ec_dev: Device to resume.
- *
- * This can be called by drivers to handle a resume event.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_resume(struct cros_ec_device *ec_dev);
-
-/**
- * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
- * @ec_dev: Device to register.
- * @msg: Message to write.
- *
- * This is intended to be used by all ChromeOS EC drivers, but at present
- * only SPI uses it. Once LPC uses the same protocol it can start using it.
- * I2C could use it now, with a refactor of the existing code.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
-		       struct cros_ec_command *msg);
-
-/**
- * cros_ec_check_result() - Check ec_msg->result.
- * @ec_dev: EC device.
- * @msg: Message to check.
- *
- * This is used by ChromeOS EC drivers to check the ec_msg->result for
- * errors and to warn about them.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_check_result(struct cros_ec_device *ec_dev,
-			 struct cros_ec_command *msg);
-
-/**
- * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
- * @ec_dev: EC device.
- * @msg: Message to write.
- *
- * Call this to send a command to the ChromeOS EC.  This should be used
- * instead of calling the EC's cmd_xfer() callback directly.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
-		     struct cros_ec_command *msg);
-
-/**
- * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
- * @ec_dev: EC device.
- * @msg: Message to write.
- *
- * This function is identical to cros_ec_cmd_xfer, except it returns success
- * status only if both the command was transmitted successfully and the EC
- * replied with success status. It's not necessary to check msg->result when
- * using this function.
- *
- * Return: The number of bytes transferred on success or negative error code.
- */
-int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
-			    struct cros_ec_command *msg);
-
-/**
- * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
- * @ec_dev: Device to register.
- *
- * Before calling this, allocate a pointer to a new device and then fill
- * in all the fields up to the --private-- marker.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_register(struct cros_ec_device *ec_dev);
-
-/**
- * cros_ec_unregister() - Remove a ChromeOS EC.
- * @ec_dev: Device to unregister.
- *
- * Call this to deregister a ChromeOS EC, then clean up any private data.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_unregister(struct cros_ec_device *ec_dev);
-
-/**
- * cros_ec_query_all() -  Query the protocol version supported by the
- *         ChromeOS EC.
- * @ec_dev: Device to register.
- *
- * Return: 0 on success or negative error code.
- */
-int cros_ec_query_all(struct cros_ec_device *ec_dev);
-
-/**
- * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
- * @ec_dev: Device to fetch event from.
- * @wake_event: Pointer to a bool set to true upon return if the event might be
- *              treated as a wake event. Ignored if null.
- *
- * Return: negative error code on errors; 0 for no data; or else number of
- * bytes received (i.e., an event was retrieved successfully). Event types are
- * written out to @ec_dev->event_data.event_type on success.
- */
-int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
-
-/**
- * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
- * @ec_dev: Device to fetch event from.
- *
- * When MKBP is supported, when the EC raises an interrupt, we collect the
- * events raised and call the functions in the ec notifier. This function
- * is a helper to know which events are raised.
- *
- * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
- */
-u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
-
 #endif /* __LINUX_MFD_CROS_EC_H */
diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
similarity index 100%
rename from include/linux/mfd/cros_ec_commands.h
rename to include/linux/platform_data/cros_ec_commands.h
diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
new file mode 100644
index 000000000000..34dd9e5c1779
--- /dev/null
+++ b/include/linux/platform_data/cros_ec_proto.h
@@ -0,0 +1,315 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ChromeOS Embedded Controller protocol interface.
+ *
+ * Copyright (C) 2012 Google, Inc
+ */
+
+#ifndef __LINUX_CROS_EC_PROTO_H
+#define __LINUX_CROS_EC_PROTO_H
+
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/notifier.h>
+
+#define CROS_EC_DEV_NAME	"cros_ec"
+#define CROS_EC_DEV_FP_NAME	"cros_fp"
+#define CROS_EC_DEV_ISH_NAME	"cros_ish"
+#define CROS_EC_DEV_PD_NAME	"cros_pd"
+#define CROS_EC_DEV_TP_NAME	"cros_tp"
+
+/*
+ * The EC is unresponsive for a time after a reboot command.  Add a
+ * simple delay to make sure that the bus stays locked.
+ */
+#define EC_REBOOT_DELAY_MS		50
+
+/*
+ * Max bus-specific overhead incurred by request/responses.
+ * I2C requires 1 additional byte for requests.
+ * I2C requires 2 additional bytes for responses.
+ * SPI requires up to 32 additional bytes for responses.
+ */
+#define EC_PROTO_VERSION_UNKNOWN	0
+#define EC_MAX_REQUEST_OVERHEAD		1
+#define EC_MAX_RESPONSE_OVERHEAD	32
+
+/*
+ * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
+ */
+enum {
+	EC_MSG_TX_HEADER_BYTES	= 3,
+	EC_MSG_TX_TRAILER_BYTES	= 1,
+	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
+				  EC_MSG_TX_TRAILER_BYTES,
+	EC_MSG_RX_PROTO_BYTES	= 3,
+
+	/* Max length of messages for proto 2*/
+	EC_PROTO2_MSG_BYTES	= EC_PROTO2_MAX_PARAM_SIZE +
+				  EC_MSG_TX_PROTO_BYTES,
+
+	EC_MAX_MSG_BYTES	= 64 * 1024,
+};
+
+/**
+ * struct cros_ec_command - Information about a ChromeOS EC command.
+ * @version: Command version number (often 0).
+ * @command: Command to send (EC_CMD_...).
+ * @outsize: Outgoing length in bytes.
+ * @insize: Max number of bytes to accept from the EC.
+ * @result: EC's response to the command (separate from communication failure).
+ * @data: Where to put the incoming data from EC and outgoing data to EC.
+ */
+struct cros_ec_command {
+	uint32_t version;
+	uint32_t command;
+	uint32_t outsize;
+	uint32_t insize;
+	uint32_t result;
+	uint8_t data[0];
+};
+
+/**
+ * struct cros_ec_device - Information about a ChromeOS EC device.
+ * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
+ * @dev: Device pointer for physical comms device
+ * @was_wake_device: True if this device was set to wake the system from
+ *                   sleep at the last suspend.
+ * @cros_class: The class structure for this device.
+ * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
+ *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
+ *     @bytes: Number of bytes to read. zero means "read a string" (including
+ *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
+ *             read. Caller must ensure that the buffer is large enough for the
+ *             result when reading a string.
+ * @max_request: Max size of message requested.
+ * @max_response: Max size of message response.
+ * @max_passthru: Max sice of passthru message.
+ * @proto_version: The protocol version used for this device.
+ * @priv: Private data.
+ * @irq: Interrupt to use.
+ * @id: Device id.
+ * @din: Input buffer (for data from EC). This buffer will always be
+ *       dword-aligned and include enough space for up to 7 word-alignment
+ *       bytes also, so we can ensure that the body of the message is always
+ *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
+ *       happy. Probably word alignment would be OK, there might be a small
+ *       performance advantage to using dword.
+ * @dout: Output buffer (for data to EC). This buffer will always be
+ *        dword-aligned and include enough space for up to 7 word-alignment
+ *        bytes also, so we can ensure that the body of the message is always
+ *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
+ *        happy. Probably word alignment would be OK, there might be a small
+ *        performance advantage to using dword.
+ * @din_size: Size of din buffer to allocate (zero to use static din).
+ * @dout_size: Size of dout buffer to allocate (zero to use static dout).
+ * @wake_enabled: True if this device can wake the system from sleep.
+ * @suspended: True if this device had been suspended.
+ * @cmd_xfer: Send command to EC and get response.
+ *            Returns the number of bytes received if the communication
+ *            succeeded, but that doesn't mean the EC was happy with the
+ *            command. The caller should check msg.result for the EC's result
+ *            code.
+ * @pkt_xfer: Send packet to EC and get response.
+ * @lock: One transaction at a time.
+ * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
+ * @host_sleep_v1: True if this EC supports the sleep v1 command.
+ * @event_notifier: Interrupt event notifier for transport devices.
+ * @event_data: Raw payload transferred with the MKBP event.
+ * @event_size: Size in bytes of the event data.
+ * @host_event_wake_mask: Mask of host events that cause wake from suspend.
+ * @ec: The platform_device used by the mfd driver to interface with the
+ *      main EC.
+ * @pd: The platform_device used by the mfd driver to interface with the
+ *      PD behind an EC.
+ */
+struct cros_ec_device {
+	/* These are used by other drivers that want to talk to the EC */
+	const char *phys_name;
+	struct device *dev;
+	bool was_wake_device;
+	struct class *cros_class;
+	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
+			   unsigned int bytes, void *dest);
+
+	/* These are used to implement the platform-specific interface */
+	u16 max_request;
+	u16 max_response;
+	u16 max_passthru;
+	u16 proto_version;
+	void *priv;
+	int irq;
+	u8 *din;
+	u8 *dout;
+	int din_size;
+	int dout_size;
+	bool wake_enabled;
+	bool suspended;
+	int (*cmd_xfer)(struct cros_ec_device *ec,
+			struct cros_ec_command *msg);
+	int (*pkt_xfer)(struct cros_ec_device *ec,
+			struct cros_ec_command *msg);
+	struct mutex lock;
+	bool mkbp_event_supported;
+	bool host_sleep_v1;
+	struct blocking_notifier_head event_notifier;
+
+	struct ec_response_get_next_event_v1 event_data;
+	int event_size;
+	u32 host_event_wake_mask;
+
+	/* The platform devices used by the mfd driver */
+	struct platform_device *ec;
+	struct platform_device *pd;
+};
+
+/**
+ * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
+ * @sensor_num: Id of the sensor, as reported by the EC.
+ */
+struct cros_ec_sensor_platform {
+	u8 sensor_num;
+};
+
+/**
+ * struct cros_ec_platform - ChromeOS EC platform information.
+ * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
+ *           used in /dev/ and sysfs.
+ * @cmd_offset: Offset to apply for each command. Set when
+ *              registering a device behind another one.
+ */
+struct cros_ec_platform {
+	const char *ec_name;
+	u16 cmd_offset;
+};
+
+/**
+ * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
+ * @ec_dev: Device to suspend.
+ *
+ * This can be called by drivers to handle a suspend event.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_suspend(struct cros_ec_device *ec_dev);
+
+/**
+ * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
+ * @ec_dev: Device to resume.
+ *
+ * This can be called by drivers to handle a resume event.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_resume(struct cros_ec_device *ec_dev);
+
+/**
+ * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
+ * @ec_dev: Device to register.
+ * @msg: Message to write.
+ *
+ * This is intended to be used by all ChromeOS EC drivers, but at present
+ * only SPI uses it. Once LPC uses the same protocol it can start using it.
+ * I2C could use it now, with a refactor of the existing code.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
+		       struct cros_ec_command *msg);
+
+/**
+ * cros_ec_check_result() - Check ec_msg->result.
+ * @ec_dev: EC device.
+ * @msg: Message to check.
+ *
+ * This is used by ChromeOS EC drivers to check the ec_msg->result for
+ * errors and to warn about them.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_check_result(struct cros_ec_device *ec_dev,
+			 struct cros_ec_command *msg);
+
+/**
+ * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
+ * @ec_dev: EC device.
+ * @msg: Message to write.
+ *
+ * Call this to send a command to the ChromeOS EC.  This should be used
+ * instead of calling the EC's cmd_xfer() callback directly.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
+		     struct cros_ec_command *msg);
+
+/**
+ * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
+ * @ec_dev: EC device.
+ * @msg: Message to write.
+ *
+ * This function is identical to cros_ec_cmd_xfer, except it returns success
+ * status only if both the command was transmitted successfully and the EC
+ * replied with success status. It's not necessary to check msg->result when
+ * using this function.
+ *
+ * Return: The number of bytes transferred on success or negative error code.
+ */
+int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
+			    struct cros_ec_command *msg);
+
+/**
+ * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
+ * @ec_dev: Device to register.
+ *
+ * Before calling this, allocate a pointer to a new device and then fill
+ * in all the fields up to the --private-- marker.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_register(struct cros_ec_device *ec_dev);
+
+/**
+ * cros_ec_unregister() - Remove a ChromeOS EC.
+ * @ec_dev: Device to unregister.
+ *
+ * Call this to deregister a ChromeOS EC, then clean up any private data.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_unregister(struct cros_ec_device *ec_dev);
+
+/**
+ * cros_ec_query_all() -  Query the protocol version supported by the
+ *         ChromeOS EC.
+ * @ec_dev: Device to register.
+ *
+ * Return: 0 on success or negative error code.
+ */
+int cros_ec_query_all(struct cros_ec_device *ec_dev);
+
+/**
+ * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
+ * @ec_dev: Device to fetch event from.
+ * @wake_event: Pointer to a bool set to true upon return if the event might be
+ *              treated as a wake event. Ignored if null.
+ *
+ * Return: negative error code on errors; 0 for no data; or else number of
+ * bytes received (i.e., an event was retrieved successfully). Event types are
+ * written out to @ec_dev->event_data.event_type on success.
+ */
+int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
+
+/**
+ * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
+ * @ec_dev: Device to fetch event from.
+ *
+ * When MKBP is supported, when the EC raises an interrupt, we collect the
+ * events raised and call the functions in the ec notifier. This function
+ * is a helper to know which events are raised.
+ *
+ * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
+ */
+u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
+
+#endif /* __LINUX_CROS_EC_PROTO_H */
diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
index 87830ed5ebf4..79bb4081d3c2 100644
--- a/sound/soc/codecs/cros_ec_codec.c
+++ b/sound/soc/codecs/cros_ec_codec.c
@@ -9,9 +9,9 @@
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
 #include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
 #include <linux/platform_device.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
-- 
2.20.1

Re: [PATCH 00/10] Move part of cros-ec out of MFD subsystem

[Andy Shevchenko]

On Tue, Jun 04, 2019 at 05:20:09PM +0200, Enric Balletbo i Serra wrote:
> Hi,
> 
> This is the first attempt to clean up a bit more the cros-ec drivers
> to have a better separation on what is part of the MFD subsystem and what
> is part of platform/chrome.
> 
> It'd be really nice have some reviews, acks and tested on different
> platforms from the chromiumos people before merge all this patchset, as
> this moves a lot of code.
> 
> The major changes introduced by this patchset are:
> 1. Move the core driver to platform/chrome, as is not really related to
> an MFD device driver.
> 2. Create a new misc chardev driver to replace the chardev bits from
> cros-ec-dev (MFD)
> 3. Added some convenience structs in cros-ec-dev (MFD) to easy add more
> subdrivers and avoid to add more boiler plate.
> 
> Once applied we have moved all the code to platform/chrome except the
> cros-ec-dev driver, which is the one that instantiates the different
> subdrivers as cells of the MFD device.
> 
> I tested the following patches on Veyron, Kevin, Samus, Peach Pi and
> Peach Pit without noticing any problem, but they would need a lot of
> more tests. I'll continue testing while the reviewing process of this
> patchset.
> 

If my tag helps, here it is:
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> Waiting for your feedback,
>  Enric
> 
> 
> Enric Balletbo i Serra (10):
>   mfd / platform: cros_ec: Handle chained ECs as platform devices
>   mfd / platform: cros_ec: Move cros-ec core driver out from MFD
>   mfd / platform: cros_ec: Miscellaneous character device to talk with
>     the EC
>   mfd: cros_ec: Switch to use the new cros-ec-chardev driver
>   mfd / platform: cros_ec: Rename config to a better name
>   mfd / platform: cros_ec: Reorganize platform and mfd includes
>   mfd: cros_ec: Update with SPDX Licence identifier and fix description
>   mfd: cros_ec: Use kzalloc and cros_ec_cmd_xfer_status helper
>   mfd: cros_ec: Add convenience struct to define dedicated CrOS EC MCUs
>   mfd: cros_ec: Add convenience struct to define autodetectable CrOS EC
>     subdevices
> 
>  Documentation/ioctl/ioctl-number.txt          |   2 +-
>  drivers/extcon/Kconfig                        |   2 +-
>  drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
>  drivers/hid/Kconfig                           |   2 +-
>  drivers/hid/hid-google-hammer.c               |   4 +-
>  drivers/i2c/busses/Kconfig                    |   2 +-
>  drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
>  drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig    |   2 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
>  .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
>  drivers/iio/light/cros_ec_light_prox.c        |   3 +-
>  drivers/iio/pressure/cros_ec_baro.c           |   3 +-
>  drivers/input/keyboard/Kconfig                |   2 +-
>  drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
>  drivers/media/platform/Kconfig                |   3 +-
>  .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
>  drivers/mfd/Kconfig                           |  26 +-
>  drivers/mfd/Makefile                          |   4 +-
>  drivers/mfd/cros_ec_dev.c                     | 433 +++++-------------
>  drivers/platform/chrome/Kconfig               |  48 +-
>  drivers/platform/chrome/Makefile              |   2 +
>  drivers/{mfd => platform/chrome}/cros_ec.c    |  64 +--
>  drivers/platform/chrome/cros_ec_chardev.c     | 279 +++++++++++
>  drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
>  drivers/platform/chrome/cros_ec_i2c.c         |  12 +-
>  drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
>  drivers/platform/chrome/cros_ec_lpc.c         |   7 +-
>  drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
>  drivers/platform/chrome/cros_ec_proto.c       |   3 +-
>  drivers/platform/chrome/cros_ec_rpmsg.c       |   6 +-
>  drivers/platform/chrome/cros_ec_spi.c         |  12 +-
>  drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
>  drivers/platform/chrome/cros_ec_trace.c       |   2 +-
>  drivers/platform/chrome/cros_ec_trace.h       |   4 +-
>  drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
>  drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
>  drivers/power/supply/Kconfig                  |   2 +-
>  drivers/power/supply/cros_usbpd-charger.c     |   5 +-
>  drivers/pwm/Kconfig                           |   2 +-
>  drivers/pwm/pwm-cros-ec.c                     |   4 +-
>  drivers/rtc/Kconfig                           |   2 +-
>  drivers/rtc/rtc-cros-ec.c                     |   3 +-
>  .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
>  include/linux/mfd/cros_ec.h                   | 302 +-----------
>  .../{mfd => platform_data}/cros_ec_commands.h |   0
>  include/linux/platform_data/cros_ec_proto.h   | 315 +++++++++++++
>  .../uapi/linux/cros_ec_chardev.h              |  18 +-
>  sound/soc/codecs/cros_ec_codec.c              |   4 +-
>  sound/soc/qcom/Kconfig                        |   2 +-
>  50 files changed, 902 insertions(+), 732 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (85%)
>  create mode 100644 drivers/platform/chrome/cros_ec_chardev.c
>  rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
>  create mode 100644 include/linux/platform_data/cros_ec_proto.h
>  rename drivers/mfd/cros_ec_dev.h => include/uapi/linux/cros_ec_chardev.h (70%)
> 
> -- 
> 2.20.1
> 

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH 00/10] Move part of cros-ec out of MFD subsystem

[Randy Dunlap]

On 6/4/19 8:20 AM, Enric Balletbo i Serra wrote:
> Hi,
> 
> This is the first attempt to clean up a bit more the cros-ec drivers
> to have a better separation on what is part of the MFD subsystem and what
> is part of platform/chrome.
> 
> It'd be really nice have some reviews, acks and tested on different
> platforms from the chromiumos people before merge all this patchset, as
> this moves a lot of code.
> 
> The major changes introduced by this patchset are:
> 1. Move the core driver to platform/chrome, as is not really related to
> an MFD device driver.
> 2. Create a new misc chardev driver to replace the chardev bits from
> cros-ec-dev (MFD)
> 3. Added some convenience structs in cros-ec-dev (MFD) to easy add more
> subdrivers and avoid to add more boiler plate.
> 
> Once applied we have moved all the code to platform/chrome except the
> cros-ec-dev driver, which is the one that instantiates the different
> subdrivers as cells of the MFD device.
> 
> I tested the following patches on Veyron, Kevin, Samus, Peach Pi and
> Peach Pit without noticing any problem, but they would need a lot of
> more tests. I'll continue testing while the reviewing process of this
> patchset.
> 
> Waiting for your feedback,
>  Enric
> 

Hi,
Was there a patch 02/10?  I didn't see it.
What mailing list(s) was it sent to?

thanks.

> 
> Enric Balletbo i Serra (10):
>   mfd / platform: cros_ec: Handle chained ECs as platform devices
>   mfd / platform: cros_ec: Move cros-ec core driver out from MFD
>   mfd / platform: cros_ec: Miscellaneous character device to talk with
>     the EC
>   mfd: cros_ec: Switch to use the new cros-ec-chardev driver
>   mfd / platform: cros_ec: Rename config to a better name
>   mfd / platform: cros_ec: Reorganize platform and mfd includes
>   mfd: cros_ec: Update with SPDX Licence identifier and fix description
>   mfd: cros_ec: Use kzalloc and cros_ec_cmd_xfer_status helper
>   mfd: cros_ec: Add convenience struct to define dedicated CrOS EC MCUs
>   mfd: cros_ec: Add convenience struct to define autodetectable CrOS EC
>     subdevices
> 
>  Documentation/ioctl/ioctl-number.txt          |   2 +-
>  drivers/extcon/Kconfig                        |   2 +-
>  drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
>  drivers/hid/Kconfig                           |   2 +-
>  drivers/hid/hid-google-hammer.c               |   4 +-
>  drivers/i2c/busses/Kconfig                    |   2 +-
>  drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
>  drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig    |   2 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
>  .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
>  drivers/iio/light/cros_ec_light_prox.c        |   3 +-
>  drivers/iio/pressure/cros_ec_baro.c           |   3 +-
>  drivers/input/keyboard/Kconfig                |   2 +-
>  drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
>  drivers/media/platform/Kconfig                |   3 +-
>  .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
>  drivers/mfd/Kconfig                           |  26 +-
>  drivers/mfd/Makefile                          |   4 +-
>  drivers/mfd/cros_ec_dev.c                     | 433 +++++-------------
>  drivers/platform/chrome/Kconfig               |  48 +-
>  drivers/platform/chrome/Makefile              |   2 +
>  drivers/{mfd => platform/chrome}/cros_ec.c    |  64 +--
>  drivers/platform/chrome/cros_ec_chardev.c     | 279 +++++++++++
>  drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
>  drivers/platform/chrome/cros_ec_i2c.c         |  12 +-
>  drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
>  drivers/platform/chrome/cros_ec_lpc.c         |   7 +-
>  drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
>  drivers/platform/chrome/cros_ec_proto.c       |   3 +-
>  drivers/platform/chrome/cros_ec_rpmsg.c       |   6 +-
>  drivers/platform/chrome/cros_ec_spi.c         |  12 +-
>  drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
>  drivers/platform/chrome/cros_ec_trace.c       |   2 +-
>  drivers/platform/chrome/cros_ec_trace.h       |   4 +-
>  drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
>  drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
>  drivers/power/supply/Kconfig                  |   2 +-
>  drivers/power/supply/cros_usbpd-charger.c     |   5 +-
>  drivers/pwm/Kconfig                           |   2 +-
>  drivers/pwm/pwm-cros-ec.c                     |   4 +-
>  drivers/rtc/Kconfig                           |   2 +-
>  drivers/rtc/rtc-cros-ec.c                     |   3 +-
>  .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
>  include/linux/mfd/cros_ec.h                   | 302 +-----------
>  .../{mfd => platform_data}/cros_ec_commands.h |   0
>  include/linux/platform_data/cros_ec_proto.h   | 315 +++++++++++++
>  .../uapi/linux/cros_ec_chardev.h              |  18 +-
>  sound/soc/codecs/cros_ec_codec.c              |   4 +-
>  sound/soc/qcom/Kconfig                        |   2 +-
>  50 files changed, 902 insertions(+), 732 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (85%)
>  create mode 100644 drivers/platform/chrome/cros_ec_chardev.c
>  rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
>  create mode 100644 include/linux/platform_data/cros_ec_proto.h
>  rename drivers/mfd/cros_ec_dev.h => include/uapi/linux/cros_ec_chardev.h (70%)
> 


-- 
~Randy

Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Thierry Reding]

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On Tue, Jun 04, 2019 at 05:20:11PM +0200, Enric Balletbo i Serra wrote:
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
> 
>  drivers/extcon/Kconfig                     |  2 +-
>  drivers/hid/Kconfig                        |  2 +-
>  drivers/i2c/busses/Kconfig                 |  2 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig |  2 +-
>  drivers/input/keyboard/Kconfig             |  2 +-
>  drivers/media/platform/Kconfig             |  3 +--
>  drivers/mfd/Kconfig                        | 14 +-------------
>  drivers/mfd/Makefile                       |  2 --
>  drivers/platform/chrome/Kconfig            | 21 +++++++++++++++++----
>  drivers/platform/chrome/Makefile           |  1 +
>  drivers/{mfd => platform/chrome}/cros_ec.c |  0
>  drivers/power/supply/Kconfig               |  2 +-
>  drivers/pwm/Kconfig                        |  2 +-
>  drivers/rtc/Kconfig                        |  2 +-
>  sound/soc/qcom/Kconfig                     |  2 +-
>  15 files changed, 29 insertions(+), 30 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (100%)
[...]
> diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
> index dff5a93f7daa..99946e1bcc73 100644
> --- a/drivers/pwm/Kconfig
> +++ b/drivers/pwm/Kconfig
> @@ -145,7 +145,7 @@ config PWM_CRC
>  
>  config PWM_CROS_EC
>  	tristate "ChromeOS EC PWM driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
>  	  Controller.

Acked-by: Thierry Reding <thierry.reding@gmail.com>

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Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Mark Brown]

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On Tue, Jun 04, 2019 at 05:20:11PM +0200, Enric Balletbo i Serra wrote:
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.

Acked-by: Mark Brown <broonie@kernel.org>

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Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Mark Brown]

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On Tue, Jun 04, 2019 at 05:20:15PM +0200, Enric Balletbo i Serra wrote:
> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or

Acked-by: Mark Brown <broonie@kernel.org>

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Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Wolfram Sang]

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On Tue, Jun 04, 2019 at 05:20:11PM +0200, Enric Balletbo i Serra wrote:
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>

Acked-by: Wolfram Sang <wsa@the-dreams.de> (for the I2C part)


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Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Wolfram Sang]

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On Tue, Jun 04, 2019 at 05:20:15PM +0200, Enric Balletbo i Serra wrote:
> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
> we have a linux/mfd/cros_ec_commands.h file that is non related to the
> multifunction device (in the sense that is not exporting any function of
> the mfd device). This causes crossed includes between mfd and
> platform/chrome subsystems and makes the code difficult to read, apart
> from creating 'curious' situations where a platform/chrome driver includes
> a linux/mfd/cros_ec.h file just to get the exported functions that are
> implemented in another platform/chrome driver.
> 
> In order to have a better separation on what the cros-ec multifunction
> driver does and what the cros-ec core provides move and rework the
> affected includes doing:
> 
>  - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
>  - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
>    driver from include/linux/mfd/cros_ec.h to a new file
>    include/linux/platform_data/cros_ec_proto.h
>  - Update all the drivers with the new includes, so
>    - Drivers that only need to know about the protocol include
>      - linux/platform_data/cros_ec_proto.h
>      - linux/platform_data/cros_ec_commands.h
>    - Drivers that need to know about the cros-ec mfd device also include
>      - linux/mfd/cros_ec.h
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>

Acked-by: Wolfram Sang <wsa@the-dreams.de> (for the I2C part)


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Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Neil Armstrong]

On 04/06/2019 17:20, Enric Balletbo i Serra wrote:
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
> 
>  drivers/extcon/Kconfig                     |  2 +-
>  drivers/hid/Kconfig                        |  2 +-
>  drivers/i2c/busses/Kconfig                 |  2 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig |  2 +-
>  drivers/input/keyboard/Kconfig             |  2 +-
>  drivers/media/platform/Kconfig             |  3 +--
>  drivers/mfd/Kconfig                        | 14 +-------------
>  drivers/mfd/Makefile                       |  2 --
>  drivers/platform/chrome/Kconfig            | 21 +++++++++++++++++----
>  drivers/platform/chrome/Makefile           |  1 +
>  drivers/{mfd => platform/chrome}/cros_ec.c |  0
>  drivers/power/supply/Kconfig               |  2 +-
>  drivers/pwm/Kconfig                        |  2 +-
>  drivers/rtc/Kconfig                        |  2 +-
>  sound/soc/qcom/Kconfig                     |  2 +-
>  15 files changed, 29 insertions(+), 30 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (100%)
> 

Acked-by: Neil Armstrong <narmstrong@baylibre.com> # for the cros-cec part

Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Neil Armstrong]

On 04/06/2019 17:20, Enric Balletbo i Serra wrote:
> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
> we have a linux/mfd/cros_ec_commands.h file that is non related to the
> multifunction device (in the sense that is not exporting any function of
> the mfd device). This causes crossed includes between mfd and
> platform/chrome subsystems and makes the code difficult to read, apart
> from creating 'curious' situations where a platform/chrome driver includes
> a linux/mfd/cros_ec.h file just to get the exported functions that are
> implemented in another platform/chrome driver.
> 
> In order to have a better separation on what the cros-ec multifunction
> driver does and what the cros-ec core provides move and rework the
> affected includes doing:
> 
>  - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
>  - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
>    driver from include/linux/mfd/cros_ec.h to a new file
>    include/linux/platform_data/cros_ec_proto.h
>  - Update all the drivers with the new includes, so
>    - Drivers that only need to know about the protocol include
>      - linux/platform_data/cros_ec_proto.h
>      - linux/platform_data/cros_ec_commands.h
>    - Drivers that need to know about the cros-ec mfd device also include
>      - linux/mfd/cros_ec.h
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
> 
>  drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
>  drivers/hid/hid-google-hammer.c               |   4 +-
>  drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
>  drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
>  .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
>  drivers/iio/light/cros_ec_light_prox.c        |   3 +-
>  drivers/iio/pressure/cros_ec_baro.c           |   3 +-
>  drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
>  .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
>  drivers/mfd/cros_ec_dev.c                     |   3 +-
>  drivers/platform/chrome/cros_ec.c             |   3 +-
>  drivers/platform/chrome/cros_ec_chardev.c     |   4 +-
>  drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
>  drivers/platform/chrome/cros_ec_i2c.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
>  drivers/platform/chrome/cros_ec_lpc.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
>  drivers/platform/chrome/cros_ec_proto.c       |   3 +-
>  drivers/platform/chrome/cros_ec_rpmsg.c       |   4 +-
>  drivers/platform/chrome/cros_ec_spi.c         |   4 +-
>  drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
>  drivers/platform/chrome/cros_ec_trace.c       |   2 +-
>  drivers/platform/chrome/cros_ec_trace.h       |   4 +-
>  drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
>  drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
>  drivers/power/supply/cros_usbpd-charger.c     |   5 +-
>  drivers/pwm/pwm-cros-ec.c                     |   4 +-
>  drivers/rtc/rtc-cros-ec.c                     |   3 +-
>  .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
>  include/linux/mfd/cros_ec.h                   | 306 -----------------
>  .../{mfd => platform_data}/cros_ec_commands.h |   0
>  include/linux/platform_data/cros_ec_proto.h   | 315 ++++++++++++++++++
>  sound/soc/codecs/cros_ec_codec.c              |   4 +-
>  34 files changed, 379 insertions(+), 351 deletions(-)
>  rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
>  create mode 100644 include/linux/platform_data/cros_ec_proto.h
> 

Acked-by: Neil Armstrong <narmstrong@baylibre.com> # for the cros-ec-cec part

Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Alexandre Belloni]

On 04/06/2019 17:20:11+0200, Enric Balletbo i Serra wrote:
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

> ---
> 
>  drivers/extcon/Kconfig                     |  2 +-
>  drivers/hid/Kconfig                        |  2 +-
>  drivers/i2c/busses/Kconfig                 |  2 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig |  2 +-
>  drivers/input/keyboard/Kconfig             |  2 +-
>  drivers/media/platform/Kconfig             |  3 +--
>  drivers/mfd/Kconfig                        | 14 +-------------
>  drivers/mfd/Makefile                       |  2 --
>  drivers/platform/chrome/Kconfig            | 21 +++++++++++++++++----
>  drivers/platform/chrome/Makefile           |  1 +
>  drivers/{mfd => platform/chrome}/cros_ec.c |  0
>  drivers/power/supply/Kconfig               |  2 +-
>  drivers/pwm/Kconfig                        |  2 +-
>  drivers/rtc/Kconfig                        |  2 +-
>  sound/soc/qcom/Kconfig                     |  2 +-
>  15 files changed, 29 insertions(+), 30 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (100%)
> 
> diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
> index 6f5af4196b8d..0ebc599c5e51 100644
> --- a/drivers/extcon/Kconfig
> +++ b/drivers/extcon/Kconfig
> @@ -169,7 +169,7 @@ config EXTCON_USB_GPIO
>  
>  config EXTCON_USBC_CROS_EC
>  	tristate "ChromeOS Embedded Controller EXTCON support"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  Say Y here to enable USB Type C cable detection extcon support when
>  	  using Chrome OS EC based USB Type-C ports.
> diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
> index 3872e03d9a59..a958b9625bba 100644
> --- a/drivers/hid/Kconfig
> +++ b/drivers/hid/Kconfig
> @@ -376,7 +376,7 @@ config HOLTEK_FF
>  
>  config HID_GOOGLE_HAMMER
>  	tristate "Google Hammer Keyboard"
> -	depends on USB_HID && LEDS_CLASS && MFD_CROS_EC
> +	depends on USB_HID && LEDS_CLASS && CROS_EC
>  	---help---
>  	Say Y here if you have a Google Hammer device.
>  
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index ee5dfb5aee2a..42a224d08ec7 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -1336,7 +1336,7 @@ config I2C_SIBYTE
>  
>  config I2C_CROS_EC_TUNNEL
>  	tristate "ChromeOS EC tunnel I2C bus"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  If you say yes here you get an I2C bus that will tunnel i2c commands
>  	  through to the other side of the ChromeOS EC to the i2c bus
> diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig
> index f9bf7ff7fcaf..55999104cd44 100644
> --- a/drivers/iio/common/cros_ec_sensors/Kconfig
> +++ b/drivers/iio/common/cros_ec_sensors/Kconfig
> @@ -4,7 +4,7 @@
>  #
>  config IIO_CROS_EC_SENSORS_CORE
>  	tristate "ChromeOS EC Sensors Core"
> -	depends on SYSFS && MFD_CROS_EC
> +	depends on SYSFS && CROS_EC
>  	select IIO_BUFFER
>  	select IIO_TRIGGERED_BUFFER
>  	help
> diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
> index 7c4f19dab34f..64555cc8d83e 100644
> --- a/drivers/input/keyboard/Kconfig
> +++ b/drivers/input/keyboard/Kconfig
> @@ -729,7 +729,7 @@ config KEYBOARD_W90P910
>  config KEYBOARD_CROS_EC
>  	tristate "ChromeOS EC keyboard"
>  	select INPUT_MATRIXKMAP
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  Say Y here to enable the matrix keyboard used by ChromeOS devices
>  	  and implemented on the ChromeOS EC. You must enable one bus option
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index f2b5f27ebacb..adec7a0bfe1e 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -558,10 +558,9 @@ if CEC_PLATFORM_DRIVERS
>  
>  config VIDEO_CROS_EC_CEC
>  	tristate "ChromeOS EC CEC driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	select CEC_CORE
>  	select CEC_NOTIFIER
> -	select CHROME_PLATFORMS
>  	select CROS_EC_PROTO
>  	help
>  	  If you say yes here you will get support for the
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index a17d275bf1d4..ad0a5de74ef2 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -211,21 +211,9 @@ config MFD_AXP20X_RSB
>  	  components like regulators or the PEK (Power Enable Key) under the
>  	  corresponding menus.
>  
> -config MFD_CROS_EC
> -	tristate "ChromeOS Embedded Controller"
> -	select MFD_CORE
> -	select CHROME_PLATFORMS
> -	select CROS_EC_PROTO
> -	depends on X86 || ARM || ARM64 || COMPILE_TEST
> -	help
> -	  If you say Y here you get support for the ChromeOS Embedded
> -	  Controller (EC) providing keyboard, battery and power services.
> -	  You also need to enable the driver for the bus you are using. The
> -	  protocol for talking to the EC is defined by the bus driver.
> -
>  config MFD_CROS_EC_CHARDEV
>  	tristate "Chrome OS Embedded Controller userspace device interface"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	---help---
>  	  This driver adds support to talk with the ChromeOS EC from userspace.
>  
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 52b1a90ff515..32327dc6bb45 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -13,8 +13,6 @@ obj-$(CONFIG_MFD_ASIC3)		+= asic3.o tmio_core.o
>  obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835-pm.o
>  obj-$(CONFIG_MFD_BCM590XX)	+= bcm590xx.o
>  obj-$(CONFIG_MFD_BD9571MWV)	+= bd9571mwv.o
> -cros_ec_core-objs		:= cros_ec.o
> -obj-$(CONFIG_MFD_CROS_EC)	+= cros_ec_core.o
>  obj-$(CONFIG_MFD_CROS_EC_CHARDEV) += cros_ec_dev.o
>  obj-$(CONFIG_MFD_EXYNOS_LPASS)	+= exynos-lpass.o
>  
> diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
> index 35bb5a2663f0..9417b982ad92 100644
> --- a/drivers/platform/chrome/Kconfig
> +++ b/drivers/platform/chrome/Kconfig
> @@ -50,9 +50,22 @@ config CHROMEOS_TBMC
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called chromeos_tbmc.
>  
> +config CROS_EC
> +	tristate "ChromeOS Embedded Controller"
> +	select CROS_EC_PROTO
> +	depends on X86 || ARM || ARM64 || COMPILE_TEST
> +	help
> +	  If you say Y here you get support for the ChromeOS Embedded
> +	  Controller (EC) providing keyboard, battery and power services.
> +	  You also need to enable the driver for the bus you are using. The
> +	  protocol for talking to the EC is defined by the bus driver.
> +
> +	  To compile this driver as a module, choose M here: the
> +	  module will be called cros_ec.
> +
>  config CROS_EC_I2C
>  	tristate "ChromeOS Embedded Controller (I2C)"
> -	depends on MFD_CROS_EC && I2C
> +	depends on CROS_EC && I2C
>  
>  	help
>  	  If you say Y here, you get support for talking to the ChromeOS
> @@ -62,7 +75,7 @@ config CROS_EC_I2C
>  
>  config CROS_EC_RPMSG
>  	tristate "ChromeOS Embedded Controller (rpmsg)"
> -	depends on MFD_CROS_EC && RPMSG && OF
> +	depends on CROS_EC && RPMSG && OF
>  	help
>  	  If you say Y here, you get support for talking to the ChromeOS EC
>  	  through rpmsg. This uses a simple byte-level protocol with a
> @@ -87,7 +100,7 @@ config CROS_EC_ISHTP
>  
>  config CROS_EC_SPI
>  	tristate "ChromeOS Embedded Controller (SPI)"
> -	depends on MFD_CROS_EC && SPI
> +	depends on CROS_EC && SPI
>  
>  	---help---
>  	  If you say Y here, you get support for talking to the ChromeOS EC
> @@ -97,7 +110,7 @@ config CROS_EC_SPI
>  
>  config CROS_EC_LPC
>          tristate "ChromeOS Embedded Controller (LPC)"
> -        depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
> +        depends on CROS_EC && ACPI && (X86 || COMPILE_TEST)
>          help
>            If you say Y here, you get support for talking to the ChromeOS EC
>            over an LPC bus. This uses a simple byte-level protocol with a
> diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
> index c5583c48d1e5..ebb57e21923b 100644
> --- a/drivers/platform/chrome/Makefile
> +++ b/drivers/platform/chrome/Makefile
> @@ -6,6 +6,7 @@ CFLAGS_cros_ec_trace.o:=		-I$(src)
>  obj-$(CONFIG_CHROMEOS_LAPTOP)		+= chromeos_laptop.o
>  obj-$(CONFIG_CHROMEOS_PSTORE)		+= chromeos_pstore.o
>  obj-$(CONFIG_CHROMEOS_TBMC)		+= chromeos_tbmc.o
> +obj-$(CONFIG_CROS_EC)			+= cros_ec.o
>  obj-$(CONFIG_CROS_EC_I2C)		+= cros_ec_i2c.o
>  obj-$(CONFIG_CROS_EC_ISHTP)		+= cros_ec_ishtp.o
>  obj-$(CONFIG_CROS_EC_RPMSG)		+= cros_ec_rpmsg.o
> diff --git a/drivers/mfd/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> similarity index 100%
> rename from drivers/mfd/cros_ec.c
> rename to drivers/platform/chrome/cros_ec.c
> diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
> index dd7da41f230c..e05140771845 100644
> --- a/drivers/power/supply/Kconfig
> +++ b/drivers/power/supply/Kconfig
> @@ -656,7 +656,7 @@ config CHARGER_RT9455
>  
>  config CHARGER_CROS_USBPD
>  	tristate "ChromeOS EC based USBPD charger"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	default n
>  	help
>  	  Say Y here to enable ChromeOS EC based USBPD charger
> diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
> index dff5a93f7daa..99946e1bcc73 100644
> --- a/drivers/pwm/Kconfig
> +++ b/drivers/pwm/Kconfig
> @@ -145,7 +145,7 @@ config PWM_CRC
>  
>  config PWM_CROS_EC
>  	tristate "ChromeOS EC PWM driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
>  	  Controller.
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index 5c0790eed656..4eb311569fc4 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -1265,7 +1265,7 @@ config RTC_DRV_ZYNQMP
>  
>  config RTC_DRV_CROS_EC
>  	tristate "Chrome OS EC RTC driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  If you say yes here you will get support for the
>  	  Chrome OS Embedded Controller's RTC.
> diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
> index 8e3e86619b35..60086858e920 100644
> --- a/sound/soc/qcom/Kconfig
> +++ b/sound/soc/qcom/Kconfig
> @@ -99,7 +99,7 @@ config SND_SOC_MSM8996
>  
>  config SND_SOC_SDM845
>  	tristate "SoC Machine driver for SDM845 boards"
> -	depends on QCOM_APR && MFD_CROS_EC && I2C
> +	depends on QCOM_APR && CROS_EC && I2C
>  	select SND_SOC_QDSP6
>  	select SND_SOC_QCOM_COMMON
>  	select SND_SOC_RT5663
> -- 
> 2.20.1
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Alexandre Belloni]

On 04/06/2019 17:20:15+0200, Enric Balletbo i Serra wrote:
> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
> we have a linux/mfd/cros_ec_commands.h file that is non related to the
> multifunction device (in the sense that is not exporting any function of
> the mfd device). This causes crossed includes between mfd and
> platform/chrome subsystems and makes the code difficult to read, apart
> from creating 'curious' situations where a platform/chrome driver includes
> a linux/mfd/cros_ec.h file just to get the exported functions that are
> implemented in another platform/chrome driver.
> 
> In order to have a better separation on what the cros-ec multifunction
> driver does and what the cros-ec core provides move and rework the
> affected includes doing:
> 
>  - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
>  - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
>    driver from include/linux/mfd/cros_ec.h to a new file
>    include/linux/platform_data/cros_ec_proto.h
>  - Update all the drivers with the new includes, so
>    - Drivers that only need to know about the protocol include
>      - linux/platform_data/cros_ec_proto.h
>      - linux/platform_data/cros_ec_commands.h
>    - Drivers that need to know about the cros-ec mfd device also include
>      - linux/mfd/cros_ec.h
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

> ---
> 
>  drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
>  drivers/hid/hid-google-hammer.c               |   4 +-
>  drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
>  drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
>  .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
>  drivers/iio/light/cros_ec_light_prox.c        |   3 +-
>  drivers/iio/pressure/cros_ec_baro.c           |   3 +-
>  drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
>  .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
>  drivers/mfd/cros_ec_dev.c                     |   3 +-
>  drivers/platform/chrome/cros_ec.c             |   3 +-
>  drivers/platform/chrome/cros_ec_chardev.c     |   4 +-
>  drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
>  drivers/platform/chrome/cros_ec_i2c.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
>  drivers/platform/chrome/cros_ec_lpc.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
>  drivers/platform/chrome/cros_ec_proto.c       |   3 +-
>  drivers/platform/chrome/cros_ec_rpmsg.c       |   4 +-
>  drivers/platform/chrome/cros_ec_spi.c         |   4 +-
>  drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
>  drivers/platform/chrome/cros_ec_trace.c       |   2 +-
>  drivers/platform/chrome/cros_ec_trace.h       |   4 +-
>  drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
>  drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
>  drivers/power/supply/cros_usbpd-charger.c     |   5 +-
>  drivers/pwm/pwm-cros-ec.c                     |   4 +-
>  drivers/rtc/rtc-cros-ec.c                     |   3 +-
>  .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
>  include/linux/mfd/cros_ec.h                   | 306 -----------------
>  .../{mfd => platform_data}/cros_ec_commands.h |   0
>  include/linux/platform_data/cros_ec_proto.h   | 315 ++++++++++++++++++
>  sound/soc/codecs/cros_ec_codec.c              |   4 +-
>  34 files changed, 379 insertions(+), 351 deletions(-)
>  rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
>  create mode 100644 include/linux/platform_data/cros_ec_proto.h
> 
> diff --git a/drivers/extcon/extcon-usbc-cros-ec.c b/drivers/extcon/extcon-usbc-cros-ec.c
> index 43c0a936ab82..5290cc2d19d9 100644
> --- a/drivers/extcon/extcon-usbc-cros-ec.c
> +++ b/drivers/extcon/extcon-usbc-cros-ec.c
> @@ -6,10 +6,11 @@
>  
>  #include <linux/extcon-provider.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/module.h>
>  #include <linux/notifier.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/sched.h>
> diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c
> index ee5e0bdcf078..84f8c127ebdc 100644
> --- a/drivers/hid/hid-google-hammer.c
> +++ b/drivers/hid/hid-google-hammer.c
> @@ -16,9 +16,9 @@
>  #include <linux/acpi.h>
>  #include <linux/hid.h>
>  #include <linux/leds.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pm_wakeup.h>
>  #include <asm/unaligned.h>
> diff --git a/drivers/i2c/busses/i2c-cros-ec-tunnel.c b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> index 82bcd9a78759..c551aa96a2e3 100644
> --- a/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> +++ b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> @@ -5,8 +5,8 @@
>  
>  #include <linux/module.h>
>  #include <linux/i2c.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
> index 46bb2e421bb9..fd9a634f741e 100644
> --- a/drivers/iio/accel/cros_ec_accel_legacy.c
> +++ b/drivers/iio/accel/cros_ec_accel_legacy.c
> @@ -18,9 +18,10 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  #define DRV_NAME	"cros-ec-accel-legacy"
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> index 17af4e0fd5f8..40dc24ff0ee5 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> @@ -17,8 +17,9 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> index 719a0df5aeeb..fd63315399ac 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> @@ -14,9 +14,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  static char *cros_ec_loc[] = {
> diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
> index 308ee6ff2e22..437e0eae9178 100644
> --- a/drivers/iio/light/cros_ec_light_prox.c
> +++ b/drivers/iio/light/cros_ec_light_prox.c
> @@ -15,8 +15,9 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
> index 034ce98d6e97..956dc01f1295 100644
> --- a/drivers/iio/pressure/cros_ec_baro.c
> +++ b/drivers/iio/pressure/cros_ec_baro.c
> @@ -15,9 +15,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  /*
> diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
> index d56001181598..2b71c5a51f90 100644
> --- a/drivers/input/keyboard/cros_ec_keyb.c
> +++ b/drivers/input/keyboard/cros_ec_keyb.c
> @@ -22,8 +22,8 @@
>  #include <linux/slab.h>
>  #include <linux/sysrq.h>
>  #include <linux/input/matrix_keypad.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> index 068df9888dbf..2e4e263a4a94 100644
> --- a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> +++ b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> @@ -16,8 +16,8 @@
>  #include <linux/interrupt.h>
>  #include <media/cec.h>
>  #include <media/cec-notifier.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #define DRV_NAME	"cros-ec-cec"
>  
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index c7a5dfa36874..5481df4e1216 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -7,11 +7,12 @@
>  
>  #include <linux/mfd/core.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mod_devicetable.h>
>  #include <linux/of_platform.h>
>  #include <linux/platform_device.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  
>  #define DRV_NAME "cros-ec-dev"
> diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> index 11fced7917fc..9800597ccd96 100644
> --- a/drivers/platform/chrome/cros_ec.c
> +++ b/drivers/platform/chrome/cros_ec.c
> @@ -21,7 +21,8 @@
>  #include <linux/interrupt.h>
>  #include <linux/slab.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/suspend.h>
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_chardev.c b/drivers/platform/chrome/cros_ec_chardev.c
> index 1a0a27080026..786b941a60df 100644
> --- a/drivers/platform/chrome/cros_ec_chardev.c
> +++ b/drivers/platform/chrome/cros_ec_chardev.c
> @@ -9,10 +9,10 @@
>  #include <linux/device.h>
>  #include <linux/fs.h>
>  #include <linux/list.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/miscdevice.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spinlock.h>
> diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c
> index 4c2a27f6a6d0..b088d91be9c9 100644
> --- a/drivers/platform/chrome/cros_ec_debugfs.c
> +++ b/drivers/platform/chrome/cros_ec_debugfs.c
> @@ -8,9 +8,10 @@
>  #include <linux/delay.h>
>  #include <linux/fs.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mutex.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/poll.h>
>  #include <linux/sched.h>
> diff --git a/drivers/platform/chrome/cros_ec_i2c.c b/drivers/platform/chrome/cros_ec_i2c.c
> index 6bb82dfa7dae..9bd97bc8454b 100644
> --- a/drivers/platform/chrome/cros_ec_i2c.c
> +++ b/drivers/platform/chrome/cros_ec_i2c.c
> @@ -9,8 +9,8 @@
>  #include <linux/module.h>
>  #include <linux/i2c.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c
> index d30a6650b0b5..caa26da2c788 100644
> --- a/drivers/platform/chrome/cros_ec_lightbar.c
> +++ b/drivers/platform/chrome/cros_ec_lightbar.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/sched.h>
>  #include <linux/types.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
> index 2c7e654cf89c..0c976e95998a 100644
> --- a/drivers/platform/chrome/cros_ec_lpc.c
> +++ b/drivers/platform/chrome/cros_ec_lpc.c
> @@ -16,9 +16,9 @@
>  #include <linux/delay.h>
>  #include <linux/io.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/suspend.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc_reg.c b/drivers/platform/chrome/cros_ec_lpc_reg.c
> index 0f5cd0ac8b49..dec9a779e209 100644
> --- a/drivers/platform/chrome/cros_ec_lpc_reg.c
> +++ b/drivers/platform/chrome/cros_ec_lpc_reg.c
> @@ -4,8 +4,8 @@
>  // Copyright (C) 2016 Google, Inc
>  
>  #include <linux/io.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include "cros_ec_lpc_mec.h"
>  
> diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
> index 3d2325197a68..f659f96bda12 100644
> --- a/drivers/platform/chrome/cros_ec_proto.c
> +++ b/drivers/platform/chrome/cros_ec_proto.c
> @@ -3,10 +3,11 @@
>  //
>  // Copyright (C) 2015 Google, Inc
>  
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_rpmsg.c b/drivers/platform/chrome/cros_ec_rpmsg.c
> index 520e507bfa54..9633e5417686 100644
> --- a/drivers/platform/chrome/cros_ec_rpmsg.c
> +++ b/drivers/platform/chrome/cros_ec_rpmsg.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rpmsg.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c
> index 2e21f2776063..9006e1872942 100644
> --- a/drivers/platform/chrome/cros_ec_spi.c
> +++ b/drivers/platform/chrome/cros_ec_spi.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spi/spi.h>
> diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
> index fe0b7614ae1b..0caeb8d0989d 100644
> --- a/drivers/platform/chrome/cros_ec_sysfs.c
> +++ b/drivers/platform/chrome/cros_ec_sysfs.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_trace.c b/drivers/platform/chrome/cros_ec_trace.c
> index 0a76412095a9..6f80ff4532ae 100644
> --- a/drivers/platform/chrome/cros_ec_trace.c
> +++ b/drivers/platform/chrome/cros_ec_trace.c
> @@ -6,7 +6,7 @@
>  #define TRACE_SYMBOL(a) {a, #a}
>  
>  // Generate the list using the following script:
> -// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/mfd/cros_ec_commands.h
> +// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/platform_data/cros_ec_commands.h
>  #define EC_CMDS \
>  	TRACE_SYMBOL(EC_CMD_PROTO_VERSION), \
>  	TRACE_SYMBOL(EC_CMD_HELLO), \
> diff --git a/drivers/platform/chrome/cros_ec_trace.h b/drivers/platform/chrome/cros_ec_trace.h
> index 7ae3b89c78b9..0dd4df30fa89 100644
> --- a/drivers/platform/chrome/cros_ec_trace.h
> +++ b/drivers/platform/chrome/cros_ec_trace.h
> @@ -11,8 +11,10 @@
>  #if !defined(_CROS_EC_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
>  #define _CROS_EC_TRACE_H_
>  
> +#include <linux/bits.h>
>  #include <linux/types.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include <linux/tracepoint.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_vbc.c b/drivers/platform/chrome/cros_ec_vbc.c
> index 8392a1ec33a7..cffe119e7a7a 100644
> --- a/drivers/platform/chrome/cros_ec_vbc.c
> +++ b/drivers/platform/chrome/cros_ec_vbc.c
> @@ -7,8 +7,9 @@
>  #include <linux/of.h>
>  #include <linux/platform_device.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  
>  #define DRV_NAME "cros-ec-vbc"
> diff --git a/drivers/platform/chrome/cros_usbpd_logger.c b/drivers/platform/chrome/cros_usbpd_logger.c
> index 7c7b267626a0..c549a9b49b56 100644
> --- a/drivers/platform/chrome/cros_usbpd_logger.c
> +++ b/drivers/platform/chrome/cros_usbpd_logger.c
> @@ -6,10 +6,11 @@
>   */
>  
>  #include <linux/ktime.h>
> -#include <linux/math64.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/math64.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  
> diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
> index 3a9ea94c3de3..6cc7c3910e09 100644
> --- a/drivers/power/supply/cros_usbpd-charger.c
> +++ b/drivers/power/supply/cros_usbpd-charger.c
> @@ -5,9 +5,10 @@
>   * Copyright (c) 2014 - 2018 Google, Inc
>   */
>  
> -#include <linux/module.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/power_supply.h>
>  #include <linux/slab.h>
> diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
> index 98f6ac6cf6ab..85bea2d40b7d 100644
> --- a/drivers/pwm/pwm-cros-ec.c
> +++ b/drivers/pwm/pwm-cros-ec.c
> @@ -6,8 +6,8 @@
>   */
>  
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pwm.h>
>  #include <linux/slab.h>
> diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c
> index 4d6bf9304ceb..6909e01936d9 100644
> --- a/drivers/rtc/rtc-cros-ec.c
> +++ b/drivers/rtc/rtc-cros-ec.c
> @@ -6,8 +6,9 @@
>  
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  #include <linux/slab.h>
> diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
> index ce16445411ac..8a91669f5bed 100644
> --- a/include/linux/iio/common/cros_ec_sensors_core.h
> +++ b/include/linux/iio/common/cros_ec_sensors_core.h
> @@ -18,7 +18,8 @@
>  
>  #include <linux/iio/iio.h>
>  #include <linux/irqreturn.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  enum {
>  	CROS_EC_SENSOR_X,
> diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
> index 2a1372d167b9..e0bae49535e1 100644
> --- a/include/linux/mfd/cros_ec.h
> +++ b/include/linux/mfd/cros_ec.h
> @@ -16,184 +16,7 @@
>  #ifndef __LINUX_MFD_CROS_EC_H
>  #define __LINUX_MFD_CROS_EC_H
>  
> -#include <linux/cdev.h>
>  #include <linux/device.h>
> -#include <linux/notifier.h>
> -#include <linux/mfd/cros_ec_commands.h>
> -#include <linux/mutex.h>
> -
> -#define CROS_EC_DEV_NAME "cros_ec"
> -#define CROS_EC_DEV_FP_NAME "cros_fp"
> -#define CROS_EC_DEV_PD_NAME "cros_pd"
> -#define CROS_EC_DEV_TP_NAME "cros_tp"
> -#define CROS_EC_DEV_ISH_NAME "cros_ish"
> -
> -/*
> - * The EC is unresponsive for a time after a reboot command.  Add a
> - * simple delay to make sure that the bus stays locked.
> - */
> -#define EC_REBOOT_DELAY_MS             50
> -
> -/*
> - * Max bus-specific overhead incurred by request/responses.
> - * I2C requires 1 additional byte for requests.
> - * I2C requires 2 additional bytes for responses.
> - * SPI requires up to 32 additional bytes for responses.
> - */
> -#define EC_PROTO_VERSION_UNKNOWN	0
> -#define EC_MAX_REQUEST_OVERHEAD		1
> -#define EC_MAX_RESPONSE_OVERHEAD	32
> -
> -/*
> - * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> - */
> -enum {
> -	EC_MSG_TX_HEADER_BYTES	= 3,
> -	EC_MSG_TX_TRAILER_BYTES	= 1,
> -	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
> -					EC_MSG_TX_TRAILER_BYTES,
> -	EC_MSG_RX_PROTO_BYTES	= 3,
> -
> -	/* Max length of messages for proto 2*/
> -	EC_PROTO2_MSG_BYTES		= EC_PROTO2_MAX_PARAM_SIZE +
> -					EC_MSG_TX_PROTO_BYTES,
> -
> -	EC_MAX_MSG_BYTES		= 64 * 1024,
> -};
> -
> -/**
> - * struct cros_ec_command - Information about a ChromeOS EC command.
> - * @version: Command version number (often 0).
> - * @command: Command to send (EC_CMD_...).
> - * @outsize: Outgoing length in bytes.
> - * @insize: Max number of bytes to accept from the EC.
> - * @result: EC's response to the command (separate from communication failure).
> - * @data: Where to put the incoming data from EC and outgoing data to EC.
> - */
> -struct cros_ec_command {
> -	uint32_t version;
> -	uint32_t command;
> -	uint32_t outsize;
> -	uint32_t insize;
> -	uint32_t result;
> -	uint8_t data[0];
> -};
> -
> -/**
> - * struct cros_ec_device - Information about a ChromeOS EC device.
> - * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> - * @dev: Device pointer for physical comms device
> - * @was_wake_device: True if this device was set to wake the system from
> - *                   sleep at the last suspend.
> - * @cros_class: The class structure for this device.
> - * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> - *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> - *     @bytes: Number of bytes to read. zero means "read a string" (including
> - *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> - *             read. Caller must ensure that the buffer is large enough for the
> - *             result when reading a string.
> - * @max_request: Max size of message requested.
> - * @max_response: Max size of message response.
> - * @max_passthru: Max sice of passthru message.
> - * @proto_version: The protocol version used for this device.
> - * @priv: Private data.
> - * @irq: Interrupt to use.
> - * @id: Device id.
> - * @din: Input buffer (for data from EC). This buffer will always be
> - *       dword-aligned and include enough space for up to 7 word-alignment
> - *       bytes also, so we can ensure that the body of the message is always
> - *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *       happy. Probably word alignment would be OK, there might be a small
> - *       performance advantage to using dword.
> - * @dout: Output buffer (for data to EC). This buffer will always be
> - *        dword-aligned and include enough space for up to 7 word-alignment
> - *        bytes also, so we can ensure that the body of the message is always
> - *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *        happy. Probably word alignment would be OK, there might be a small
> - *        performance advantage to using dword.
> - * @din_size: Size of din buffer to allocate (zero to use static din).
> - * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> - * @wake_enabled: True if this device can wake the system from sleep.
> - * @suspended: True if this device had been suspended.
> - * @cmd_xfer: Send command to EC and get response.
> - *            Returns the number of bytes received if the communication
> - *            succeeded, but that doesn't mean the EC was happy with the
> - *            command. The caller should check msg.result for the EC's result
> - *            code.
> - * @pkt_xfer: Send packet to EC and get response.
> - * @lock: One transaction at a time.
> - * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> - * @host_sleep_v1: True if this EC supports the sleep v1 command.
> - * @event_notifier: Interrupt event notifier for transport devices.
> - * @event_data: Raw payload transferred with the MKBP event.
> - * @event_size: Size in bytes of the event data.
> - * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> - * @ec: The platform_device used by the mfd driver to interface with the
> - *      main EC.
> - * @pd: The platform_device used by the mfd driver to interface with the
> - *      PD behind an EC.
> - */
> -struct cros_ec_device {
> -	/* These are used by other drivers that want to talk to the EC */
> -	const char *phys_name;
> -	struct device *dev;
> -	bool was_wake_device;
> -	struct class *cros_class;
> -	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> -			   unsigned int bytes, void *dest);
> -
> -	/* These are used to implement the platform-specific interface */
> -	u16 max_request;
> -	u16 max_response;
> -	u16 max_passthru;
> -	u16 proto_version;
> -	void *priv;
> -	int irq;
> -	u8 *din;
> -	u8 *dout;
> -	int din_size;
> -	int dout_size;
> -	bool wake_enabled;
> -	bool suspended;
> -	int (*cmd_xfer)(struct cros_ec_device *ec,
> -			struct cros_ec_command *msg);
> -	int (*pkt_xfer)(struct cros_ec_device *ec,
> -			struct cros_ec_command *msg);
> -	struct mutex lock;
> -	bool mkbp_event_supported;
> -	bool host_sleep_v1;
> -	struct blocking_notifier_head event_notifier;
> -
> -	struct ec_response_get_next_event_v1 event_data;
> -	int event_size;
> -	u32 host_event_wake_mask;
> -
> -	/* The platform devices used by the mfd driver */
> -	struct platform_device *ec;
> -	struct platform_device *pd;
> -};
> -
> -/**
> - * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> - * @sensor_num: Id of the sensor, as reported by the EC.
> - */
> -struct cros_ec_sensor_platform {
> -	u8 sensor_num;
> -};
> -
> -/**
> - * struct cros_ec_platform - ChromeOS EC platform information.
> - * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> - *           used in /dev/ and sysfs.
> - * @cmd_offset: Offset to apply for each command. Set when
> - *              registering a device behind another one.
> - */
> -struct cros_ec_platform {
> -	const char *ec_name;
> -	u16 cmd_offset;
> -};
> -
> -struct cros_ec_debugfs;
>  
>  /**
>   * struct cros_ec_dev - ChromeOS EC device entry point.
> @@ -217,133 +40,4 @@ struct cros_ec_dev {
>  
>  #define to_cros_ec_dev(dev)  container_of(dev, struct cros_ec_dev, class_dev)
>  
> -/**
> - * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> - * @ec_dev: Device to suspend.
> - *
> - * This can be called by drivers to handle a suspend event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_suspend(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> - * @ec_dev: Device to resume.
> - *
> - * This can be called by drivers to handle a resume event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_resume(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> - * @ec_dev: Device to register.
> - * @msg: Message to write.
> - *
> - * This is intended to be used by all ChromeOS EC drivers, but at present
> - * only SPI uses it. Once LPC uses the same protocol it can start using it.
> - * I2C could use it now, with a refactor of the existing code.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> -		       struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_check_result() - Check ec_msg->result.
> - * @ec_dev: EC device.
> - * @msg: Message to check.
> - *
> - * This is used by ChromeOS EC drivers to check the ec_msg->result for
> - * errors and to warn about them.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_check_result(struct cros_ec_device *ec_dev,
> -			 struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * Call this to send a command to the ChromeOS EC.  This should be used
> - * instead of calling the EC's cmd_xfer() callback directly.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> -		     struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * This function is identical to cros_ec_cmd_xfer, except it returns success
> - * status only if both the command was transmitted successfully and the EC
> - * replied with success status. It's not necessary to check msg->result when
> - * using this function.
> - *
> - * Return: The number of bytes transferred on success or negative error code.
> - */
> -int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> -			    struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> - * @ec_dev: Device to register.
> - *
> - * Before calling this, allocate a pointer to a new device and then fill
> - * in all the fields up to the --private-- marker.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_register(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_unregister() - Remove a ChromeOS EC.
> - * @ec_dev: Device to unregister.
> - *
> - * Call this to deregister a ChromeOS EC, then clean up any private data.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_unregister(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_query_all() -  Query the protocol version supported by the
> - *         ChromeOS EC.
> - * @ec_dev: Device to register.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_query_all(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - * @wake_event: Pointer to a bool set to true upon return if the event might be
> - *              treated as a wake event. Ignored if null.
> - *
> - * Return: negative error code on errors; 0 for no data; or else number of
> - * bytes received (i.e., an event was retrieved successfully). Event types are
> - * written out to @ec_dev->event_data.event_type on success.
> - */
> -int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> -
> -/**
> - * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - *
> - * When MKBP is supported, when the EC raises an interrupt, we collect the
> - * events raised and call the functions in the ec notifier. This function
> - * is a helper to know which events are raised.
> - *
> - * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> - */
> -u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> -
>  #endif /* __LINUX_MFD_CROS_EC_H */
> diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
> similarity index 100%
> rename from include/linux/mfd/cros_ec_commands.h
> rename to include/linux/platform_data/cros_ec_commands.h
> diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
> new file mode 100644
> index 000000000000..34dd9e5c1779
> --- /dev/null
> +++ b/include/linux/platform_data/cros_ec_proto.h
> @@ -0,0 +1,315 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * ChromeOS Embedded Controller protocol interface.
> + *
> + * Copyright (C) 2012 Google, Inc
> + */
> +
> +#ifndef __LINUX_CROS_EC_PROTO_H
> +#define __LINUX_CROS_EC_PROTO_H
> +
> +#include <linux/device.h>
> +#include <linux/mutex.h>
> +#include <linux/notifier.h>
> +
> +#define CROS_EC_DEV_NAME	"cros_ec"
> +#define CROS_EC_DEV_FP_NAME	"cros_fp"
> +#define CROS_EC_DEV_ISH_NAME	"cros_ish"
> +#define CROS_EC_DEV_PD_NAME	"cros_pd"
> +#define CROS_EC_DEV_TP_NAME	"cros_tp"
> +
> +/*
> + * The EC is unresponsive for a time after a reboot command.  Add a
> + * simple delay to make sure that the bus stays locked.
> + */
> +#define EC_REBOOT_DELAY_MS		50
> +
> +/*
> + * Max bus-specific overhead incurred by request/responses.
> + * I2C requires 1 additional byte for requests.
> + * I2C requires 2 additional bytes for responses.
> + * SPI requires up to 32 additional bytes for responses.
> + */
> +#define EC_PROTO_VERSION_UNKNOWN	0
> +#define EC_MAX_REQUEST_OVERHEAD		1
> +#define EC_MAX_RESPONSE_OVERHEAD	32
> +
> +/*
> + * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> + */
> +enum {
> +	EC_MSG_TX_HEADER_BYTES	= 3,
> +	EC_MSG_TX_TRAILER_BYTES	= 1,
> +	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
> +				  EC_MSG_TX_TRAILER_BYTES,
> +	EC_MSG_RX_PROTO_BYTES	= 3,
> +
> +	/* Max length of messages for proto 2*/
> +	EC_PROTO2_MSG_BYTES	= EC_PROTO2_MAX_PARAM_SIZE +
> +				  EC_MSG_TX_PROTO_BYTES,
> +
> +	EC_MAX_MSG_BYTES	= 64 * 1024,
> +};
> +
> +/**
> + * struct cros_ec_command - Information about a ChromeOS EC command.
> + * @version: Command version number (often 0).
> + * @command: Command to send (EC_CMD_...).
> + * @outsize: Outgoing length in bytes.
> + * @insize: Max number of bytes to accept from the EC.
> + * @result: EC's response to the command (separate from communication failure).
> + * @data: Where to put the incoming data from EC and outgoing data to EC.
> + */
> +struct cros_ec_command {
> +	uint32_t version;
> +	uint32_t command;
> +	uint32_t outsize;
> +	uint32_t insize;
> +	uint32_t result;
> +	uint8_t data[0];
> +};
> +
> +/**
> + * struct cros_ec_device - Information about a ChromeOS EC device.
> + * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> + * @dev: Device pointer for physical comms device
> + * @was_wake_device: True if this device was set to wake the system from
> + *                   sleep at the last suspend.
> + * @cros_class: The class structure for this device.
> + * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> + *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> + *     @bytes: Number of bytes to read. zero means "read a string" (including
> + *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> + *             read. Caller must ensure that the buffer is large enough for the
> + *             result when reading a string.
> + * @max_request: Max size of message requested.
> + * @max_response: Max size of message response.
> + * @max_passthru: Max sice of passthru message.
> + * @proto_version: The protocol version used for this device.
> + * @priv: Private data.
> + * @irq: Interrupt to use.
> + * @id: Device id.
> + * @din: Input buffer (for data from EC). This buffer will always be
> + *       dword-aligned and include enough space for up to 7 word-alignment
> + *       bytes also, so we can ensure that the body of the message is always
> + *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *       happy. Probably word alignment would be OK, there might be a small
> + *       performance advantage to using dword.
> + * @dout: Output buffer (for data to EC). This buffer will always be
> + *        dword-aligned and include enough space for up to 7 word-alignment
> + *        bytes also, so we can ensure that the body of the message is always
> + *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *        happy. Probably word alignment would be OK, there might be a small
> + *        performance advantage to using dword.
> + * @din_size: Size of din buffer to allocate (zero to use static din).
> + * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> + * @wake_enabled: True if this device can wake the system from sleep.
> + * @suspended: True if this device had been suspended.
> + * @cmd_xfer: Send command to EC and get response.
> + *            Returns the number of bytes received if the communication
> + *            succeeded, but that doesn't mean the EC was happy with the
> + *            command. The caller should check msg.result for the EC's result
> + *            code.
> + * @pkt_xfer: Send packet to EC and get response.
> + * @lock: One transaction at a time.
> + * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> + * @host_sleep_v1: True if this EC supports the sleep v1 command.
> + * @event_notifier: Interrupt event notifier for transport devices.
> + * @event_data: Raw payload transferred with the MKBP event.
> + * @event_size: Size in bytes of the event data.
> + * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> + * @ec: The platform_device used by the mfd driver to interface with the
> + *      main EC.
> + * @pd: The platform_device used by the mfd driver to interface with the
> + *      PD behind an EC.
> + */
> +struct cros_ec_device {
> +	/* These are used by other drivers that want to talk to the EC */
> +	const char *phys_name;
> +	struct device *dev;
> +	bool was_wake_device;
> +	struct class *cros_class;
> +	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> +			   unsigned int bytes, void *dest);
> +
> +	/* These are used to implement the platform-specific interface */
> +	u16 max_request;
> +	u16 max_response;
> +	u16 max_passthru;
> +	u16 proto_version;
> +	void *priv;
> +	int irq;
> +	u8 *din;
> +	u8 *dout;
> +	int din_size;
> +	int dout_size;
> +	bool wake_enabled;
> +	bool suspended;
> +	int (*cmd_xfer)(struct cros_ec_device *ec,
> +			struct cros_ec_command *msg);
> +	int (*pkt_xfer)(struct cros_ec_device *ec,
> +			struct cros_ec_command *msg);
> +	struct mutex lock;
> +	bool mkbp_event_supported;
> +	bool host_sleep_v1;
> +	struct blocking_notifier_head event_notifier;
> +
> +	struct ec_response_get_next_event_v1 event_data;
> +	int event_size;
> +	u32 host_event_wake_mask;
> +
> +	/* The platform devices used by the mfd driver */
> +	struct platform_device *ec;
> +	struct platform_device *pd;
> +};
> +
> +/**
> + * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> + * @sensor_num: Id of the sensor, as reported by the EC.
> + */
> +struct cros_ec_sensor_platform {
> +	u8 sensor_num;
> +};
> +
> +/**
> + * struct cros_ec_platform - ChromeOS EC platform information.
> + * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> + *           used in /dev/ and sysfs.
> + * @cmd_offset: Offset to apply for each command. Set when
> + *              registering a device behind another one.
> + */
> +struct cros_ec_platform {
> +	const char *ec_name;
> +	u16 cmd_offset;
> +};
> +
> +/**
> + * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> + * @ec_dev: Device to suspend.
> + *
> + * This can be called by drivers to handle a suspend event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_suspend(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> + * @ec_dev: Device to resume.
> + *
> + * This can be called by drivers to handle a resume event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_resume(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> + * @ec_dev: Device to register.
> + * @msg: Message to write.
> + *
> + * This is intended to be used by all ChromeOS EC drivers, but at present
> + * only SPI uses it. Once LPC uses the same protocol it can start using it.
> + * I2C could use it now, with a refactor of the existing code.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> +		       struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_check_result() - Check ec_msg->result.
> + * @ec_dev: EC device.
> + * @msg: Message to check.
> + *
> + * This is used by ChromeOS EC drivers to check the ec_msg->result for
> + * errors and to warn about them.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_check_result(struct cros_ec_device *ec_dev,
> +			 struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * Call this to send a command to the ChromeOS EC.  This should be used
> + * instead of calling the EC's cmd_xfer() callback directly.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> +		     struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * This function is identical to cros_ec_cmd_xfer, except it returns success
> + * status only if both the command was transmitted successfully and the EC
> + * replied with success status. It's not necessary to check msg->result when
> + * using this function.
> + *
> + * Return: The number of bytes transferred on success or negative error code.
> + */
> +int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> +			    struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> + * @ec_dev: Device to register.
> + *
> + * Before calling this, allocate a pointer to a new device and then fill
> + * in all the fields up to the --private-- marker.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_register(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_unregister() - Remove a ChromeOS EC.
> + * @ec_dev: Device to unregister.
> + *
> + * Call this to deregister a ChromeOS EC, then clean up any private data.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_unregister(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_query_all() -  Query the protocol version supported by the
> + *         ChromeOS EC.
> + * @ec_dev: Device to register.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_query_all(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + * @wake_event: Pointer to a bool set to true upon return if the event might be
> + *              treated as a wake event. Ignored if null.
> + *
> + * Return: negative error code on errors; 0 for no data; or else number of
> + * bytes received (i.e., an event was retrieved successfully). Event types are
> + * written out to @ec_dev->event_data.event_type on success.
> + */
> +int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> +
> +/**
> + * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + *
> + * When MKBP is supported, when the EC raises an interrupt, we collect the
> + * events raised and call the functions in the ec notifier. This function
> + * is a helper to know which events are raised.
> + *
> + * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> + */
> +u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> +
> +#endif /* __LINUX_CROS_EC_PROTO_H */
> diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
> index 87830ed5ebf4..79bb4081d3c2 100644
> --- a/sound/soc/codecs/cros_ec_codec.c
> +++ b/sound/soc/codecs/cros_ec_codec.c
> @@ -9,9 +9,9 @@
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <sound/pcm.h>
>  #include <sound/pcm_params.h>
> -- 
> 2.20.1
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH 00/10] Move part of cros-ec out of MFD subsystem

[Jean Delvare]

Hi Randy,

On Tue, 4 Jun 2019 15:18:43 -0700, Randy Dunlap wrote:
> Was there a patch 02/10?  I didn't see it.
> What mailing list(s) was it sent to?

There was, but I can't find it in list archives, probably because there
were too many recipients.

I'll bounce the copy I received to you.

-- 
Jean Delvare
SUSE L3 Support

Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Jonathan Cameron]

On Tue,  4 Jun 2019 17:20:11 +0200
Enric Balletbo i Serra <enric.balletbo@collabora.com> wrote:

> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for the IIO parts.
> ---
> 
>  drivers/extcon/Kconfig                     |  2 +-
>  drivers/hid/Kconfig                        |  2 +-
>  drivers/i2c/busses/Kconfig                 |  2 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig |  2 +-
>  drivers/input/keyboard/Kconfig             |  2 +-
>  drivers/media/platform/Kconfig             |  3 +--
>  drivers/mfd/Kconfig                        | 14 +-------------
>  drivers/mfd/Makefile                       |  2 --
>  drivers/platform/chrome/Kconfig            | 21 +++++++++++++++++----
>  drivers/platform/chrome/Makefile           |  1 +
>  drivers/{mfd => platform/chrome}/cros_ec.c |  0
>  drivers/power/supply/Kconfig               |  2 +-
>  drivers/pwm/Kconfig                        |  2 +-
>  drivers/rtc/Kconfig                        |  2 +-
>  sound/soc/qcom/Kconfig                     |  2 +-
>  15 files changed, 29 insertions(+), 30 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (100%)
> 
> diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
> index 6f5af4196b8d..0ebc599c5e51 100644
> --- a/drivers/extcon/Kconfig
> +++ b/drivers/extcon/Kconfig
> @@ -169,7 +169,7 @@ config EXTCON_USB_GPIO
>  
>  config EXTCON_USBC_CROS_EC
>  	tristate "ChromeOS Embedded Controller EXTCON support"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  Say Y here to enable USB Type C cable detection extcon support when
>  	  using Chrome OS EC based USB Type-C ports.
> diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
> index 3872e03d9a59..a958b9625bba 100644
> --- a/drivers/hid/Kconfig
> +++ b/drivers/hid/Kconfig
> @@ -376,7 +376,7 @@ config HOLTEK_FF
>  
>  config HID_GOOGLE_HAMMER
>  	tristate "Google Hammer Keyboard"
> -	depends on USB_HID && LEDS_CLASS && MFD_CROS_EC
> +	depends on USB_HID && LEDS_CLASS && CROS_EC
>  	---help---
>  	Say Y here if you have a Google Hammer device.
>  
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index ee5dfb5aee2a..42a224d08ec7 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -1336,7 +1336,7 @@ config I2C_SIBYTE
>  
>  config I2C_CROS_EC_TUNNEL
>  	tristate "ChromeOS EC tunnel I2C bus"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  If you say yes here you get an I2C bus that will tunnel i2c commands
>  	  through to the other side of the ChromeOS EC to the i2c bus
> diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig
> index f9bf7ff7fcaf..55999104cd44 100644
> --- a/drivers/iio/common/cros_ec_sensors/Kconfig
> +++ b/drivers/iio/common/cros_ec_sensors/Kconfig
> @@ -4,7 +4,7 @@
>  #
>  config IIO_CROS_EC_SENSORS_CORE
>  	tristate "ChromeOS EC Sensors Core"
> -	depends on SYSFS && MFD_CROS_EC
> +	depends on SYSFS && CROS_EC
>  	select IIO_BUFFER
>  	select IIO_TRIGGERED_BUFFER
>  	help
> diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
> index 7c4f19dab34f..64555cc8d83e 100644
> --- a/drivers/input/keyboard/Kconfig
> +++ b/drivers/input/keyboard/Kconfig
> @@ -729,7 +729,7 @@ config KEYBOARD_W90P910
>  config KEYBOARD_CROS_EC
>  	tristate "ChromeOS EC keyboard"
>  	select INPUT_MATRIXKMAP
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  Say Y here to enable the matrix keyboard used by ChromeOS devices
>  	  and implemented on the ChromeOS EC. You must enable one bus option
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index f2b5f27ebacb..adec7a0bfe1e 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -558,10 +558,9 @@ if CEC_PLATFORM_DRIVERS
>  
>  config VIDEO_CROS_EC_CEC
>  	tristate "ChromeOS EC CEC driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	select CEC_CORE
>  	select CEC_NOTIFIER
> -	select CHROME_PLATFORMS
>  	select CROS_EC_PROTO
>  	help
>  	  If you say yes here you will get support for the
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index a17d275bf1d4..ad0a5de74ef2 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -211,21 +211,9 @@ config MFD_AXP20X_RSB
>  	  components like regulators or the PEK (Power Enable Key) under the
>  	  corresponding menus.
>  
> -config MFD_CROS_EC
> -	tristate "ChromeOS Embedded Controller"
> -	select MFD_CORE
> -	select CHROME_PLATFORMS
> -	select CROS_EC_PROTO
> -	depends on X86 || ARM || ARM64 || COMPILE_TEST
> -	help
> -	  If you say Y here you get support for the ChromeOS Embedded
> -	  Controller (EC) providing keyboard, battery and power services.
> -	  You also need to enable the driver for the bus you are using. The
> -	  protocol for talking to the EC is defined by the bus driver.
> -
>  config MFD_CROS_EC_CHARDEV
>  	tristate "Chrome OS Embedded Controller userspace device interface"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	---help---
>  	  This driver adds support to talk with the ChromeOS EC from userspace.
>  
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 52b1a90ff515..32327dc6bb45 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -13,8 +13,6 @@ obj-$(CONFIG_MFD_ASIC3)		+= asic3.o tmio_core.o
>  obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835-pm.o
>  obj-$(CONFIG_MFD_BCM590XX)	+= bcm590xx.o
>  obj-$(CONFIG_MFD_BD9571MWV)	+= bd9571mwv.o
> -cros_ec_core-objs		:= cros_ec.o
> -obj-$(CONFIG_MFD_CROS_EC)	+= cros_ec_core.o
>  obj-$(CONFIG_MFD_CROS_EC_CHARDEV) += cros_ec_dev.o
>  obj-$(CONFIG_MFD_EXYNOS_LPASS)	+= exynos-lpass.o
>  
> diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
> index 35bb5a2663f0..9417b982ad92 100644
> --- a/drivers/platform/chrome/Kconfig
> +++ b/drivers/platform/chrome/Kconfig
> @@ -50,9 +50,22 @@ config CHROMEOS_TBMC
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called chromeos_tbmc.
>  
> +config CROS_EC
> +	tristate "ChromeOS Embedded Controller"
> +	select CROS_EC_PROTO
> +	depends on X86 || ARM || ARM64 || COMPILE_TEST
> +	help
> +	  If you say Y here you get support for the ChromeOS Embedded
> +	  Controller (EC) providing keyboard, battery and power services.
> +	  You also need to enable the driver for the bus you are using. The
> +	  protocol for talking to the EC is defined by the bus driver.
> +
> +	  To compile this driver as a module, choose M here: the
> +	  module will be called cros_ec.
> +
>  config CROS_EC_I2C
>  	tristate "ChromeOS Embedded Controller (I2C)"
> -	depends on MFD_CROS_EC && I2C
> +	depends on CROS_EC && I2C
>  
>  	help
>  	  If you say Y here, you get support for talking to the ChromeOS
> @@ -62,7 +75,7 @@ config CROS_EC_I2C
>  
>  config CROS_EC_RPMSG
>  	tristate "ChromeOS Embedded Controller (rpmsg)"
> -	depends on MFD_CROS_EC && RPMSG && OF
> +	depends on CROS_EC && RPMSG && OF
>  	help
>  	  If you say Y here, you get support for talking to the ChromeOS EC
>  	  through rpmsg. This uses a simple byte-level protocol with a
> @@ -87,7 +100,7 @@ config CROS_EC_ISHTP
>  
>  config CROS_EC_SPI
>  	tristate "ChromeOS Embedded Controller (SPI)"
> -	depends on MFD_CROS_EC && SPI
> +	depends on CROS_EC && SPI
>  
>  	---help---
>  	  If you say Y here, you get support for talking to the ChromeOS EC
> @@ -97,7 +110,7 @@ config CROS_EC_SPI
>  
>  config CROS_EC_LPC
>          tristate "ChromeOS Embedded Controller (LPC)"
> -        depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
> +        depends on CROS_EC && ACPI && (X86 || COMPILE_TEST)
>          help
>            If you say Y here, you get support for talking to the ChromeOS EC
>            over an LPC bus. This uses a simple byte-level protocol with a
> diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
> index c5583c48d1e5..ebb57e21923b 100644
> --- a/drivers/platform/chrome/Makefile
> +++ b/drivers/platform/chrome/Makefile
> @@ -6,6 +6,7 @@ CFLAGS_cros_ec_trace.o:=		-I$(src)
>  obj-$(CONFIG_CHROMEOS_LAPTOP)		+= chromeos_laptop.o
>  obj-$(CONFIG_CHROMEOS_PSTORE)		+= chromeos_pstore.o
>  obj-$(CONFIG_CHROMEOS_TBMC)		+= chromeos_tbmc.o
> +obj-$(CONFIG_CROS_EC)			+= cros_ec.o
>  obj-$(CONFIG_CROS_EC_I2C)		+= cros_ec_i2c.o
>  obj-$(CONFIG_CROS_EC_ISHTP)		+= cros_ec_ishtp.o
>  obj-$(CONFIG_CROS_EC_RPMSG)		+= cros_ec_rpmsg.o
> diff --git a/drivers/mfd/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> similarity index 100%
> rename from drivers/mfd/cros_ec.c
> rename to drivers/platform/chrome/cros_ec.c
> diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
> index dd7da41f230c..e05140771845 100644
> --- a/drivers/power/supply/Kconfig
> +++ b/drivers/power/supply/Kconfig
> @@ -656,7 +656,7 @@ config CHARGER_RT9455
>  
>  config CHARGER_CROS_USBPD
>  	tristate "ChromeOS EC based USBPD charger"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	default n
>  	help
>  	  Say Y here to enable ChromeOS EC based USBPD charger
> diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
> index dff5a93f7daa..99946e1bcc73 100644
> --- a/drivers/pwm/Kconfig
> +++ b/drivers/pwm/Kconfig
> @@ -145,7 +145,7 @@ config PWM_CRC
>  
>  config PWM_CROS_EC
>  	tristate "ChromeOS EC PWM driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
>  	  Controller.
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index 5c0790eed656..4eb311569fc4 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -1265,7 +1265,7 @@ config RTC_DRV_ZYNQMP
>  
>  config RTC_DRV_CROS_EC
>  	tristate "Chrome OS EC RTC driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  If you say yes here you will get support for the
>  	  Chrome OS Embedded Controller's RTC.
> diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
> index 8e3e86619b35..60086858e920 100644
> --- a/sound/soc/qcom/Kconfig
> +++ b/sound/soc/qcom/Kconfig
> @@ -99,7 +99,7 @@ config SND_SOC_MSM8996
>  
>  config SND_SOC_SDM845
>  	tristate "SoC Machine driver for SDM845 boards"
> -	depends on QCOM_APR && MFD_CROS_EC && I2C
> +	depends on QCOM_APR && CROS_EC && I2C
>  	select SND_SOC_QDSP6
>  	select SND_SOC_QCOM_COMMON
>  	select SND_SOC_RT5663

Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Jonathan Cameron]

On Tue,  4 Jun 2019 17:20:15 +0200
Enric Balletbo i Serra <enric.balletbo@collabora.com> wrote:

> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
> we have a linux/mfd/cros_ec_commands.h file that is non related to the
> multifunction device (in the sense that is not exporting any function of
> the mfd device). This causes crossed includes between mfd and
> platform/chrome subsystems and makes the code difficult to read, apart
> from creating 'curious' situations where a platform/chrome driver includes
> a linux/mfd/cros_ec.h file just to get the exported functions that are
> implemented in another platform/chrome driver.
> 
> In order to have a better separation on what the cros-ec multifunction
> driver does and what the cros-ec core provides move and rework the
> affected includes doing:
> 
>  - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
>  - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
>    driver from include/linux/mfd/cros_ec.h to a new file
>    include/linux/platform_data/cros_ec_proto.h
>  - Update all the drivers with the new includes, so
>    - Drivers that only need to know about the protocol include
>      - linux/platform_data/cros_ec_proto.h
>      - linux/platform_data/cros_ec_commands.h
>    - Drivers that need to know about the cros-ec mfd device also include
>      - linux/mfd/cros_ec.h
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio parts
> ---
> 
>  drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
>  drivers/hid/hid-google-hammer.c               |   4 +-
>  drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
>  drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
>  .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
>  drivers/iio/light/cros_ec_light_prox.c        |   3 +-
>  drivers/iio/pressure/cros_ec_baro.c           |   3 +-
>  drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
>  .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
>  drivers/mfd/cros_ec_dev.c                     |   3 +-
>  drivers/platform/chrome/cros_ec.c             |   3 +-
>  drivers/platform/chrome/cros_ec_chardev.c     |   4 +-
>  drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
>  drivers/platform/chrome/cros_ec_i2c.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
>  drivers/platform/chrome/cros_ec_lpc.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
>  drivers/platform/chrome/cros_ec_proto.c       |   3 +-
>  drivers/platform/chrome/cros_ec_rpmsg.c       |   4 +-
>  drivers/platform/chrome/cros_ec_spi.c         |   4 +-
>  drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
>  drivers/platform/chrome/cros_ec_trace.c       |   2 +-
>  drivers/platform/chrome/cros_ec_trace.h       |   4 +-
>  drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
>  drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
>  drivers/power/supply/cros_usbpd-charger.c     |   5 +-
>  drivers/pwm/pwm-cros-ec.c                     |   4 +-
>  drivers/rtc/rtc-cros-ec.c                     |   3 +-
>  .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
>  include/linux/mfd/cros_ec.h                   | 306 -----------------
>  .../{mfd => platform_data}/cros_ec_commands.h |   0
>  include/linux/platform_data/cros_ec_proto.h   | 315 ++++++++++++++++++
>  sound/soc/codecs/cros_ec_codec.c              |   4 +-
>  34 files changed, 379 insertions(+), 351 deletions(-)
>  rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
>  create mode 100644 include/linux/platform_data/cros_ec_proto.h
> 
> diff --git a/drivers/extcon/extcon-usbc-cros-ec.c b/drivers/extcon/extcon-usbc-cros-ec.c
> index 43c0a936ab82..5290cc2d19d9 100644
> --- a/drivers/extcon/extcon-usbc-cros-ec.c
> +++ b/drivers/extcon/extcon-usbc-cros-ec.c
> @@ -6,10 +6,11 @@
>  
>  #include <linux/extcon-provider.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/module.h>
>  #include <linux/notifier.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/sched.h>
> diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c
> index ee5e0bdcf078..84f8c127ebdc 100644
> --- a/drivers/hid/hid-google-hammer.c
> +++ b/drivers/hid/hid-google-hammer.c
> @@ -16,9 +16,9 @@
>  #include <linux/acpi.h>
>  #include <linux/hid.h>
>  #include <linux/leds.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pm_wakeup.h>
>  #include <asm/unaligned.h>
> diff --git a/drivers/i2c/busses/i2c-cros-ec-tunnel.c b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> index 82bcd9a78759..c551aa96a2e3 100644
> --- a/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> +++ b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> @@ -5,8 +5,8 @@
>  
>  #include <linux/module.h>
>  #include <linux/i2c.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
> index 46bb2e421bb9..fd9a634f741e 100644
> --- a/drivers/iio/accel/cros_ec_accel_legacy.c
> +++ b/drivers/iio/accel/cros_ec_accel_legacy.c
> @@ -18,9 +18,10 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  #define DRV_NAME	"cros-ec-accel-legacy"
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> index 17af4e0fd5f8..40dc24ff0ee5 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> @@ -17,8 +17,9 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> index 719a0df5aeeb..fd63315399ac 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> @@ -14,9 +14,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  static char *cros_ec_loc[] = {
> diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
> index 308ee6ff2e22..437e0eae9178 100644
> --- a/drivers/iio/light/cros_ec_light_prox.c
> +++ b/drivers/iio/light/cros_ec_light_prox.c
> @@ -15,8 +15,9 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
> index 034ce98d6e97..956dc01f1295 100644
> --- a/drivers/iio/pressure/cros_ec_baro.c
> +++ b/drivers/iio/pressure/cros_ec_baro.c
> @@ -15,9 +15,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  /*
> diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
> index d56001181598..2b71c5a51f90 100644
> --- a/drivers/input/keyboard/cros_ec_keyb.c
> +++ b/drivers/input/keyboard/cros_ec_keyb.c
> @@ -22,8 +22,8 @@
>  #include <linux/slab.h>
>  #include <linux/sysrq.h>
>  #include <linux/input/matrix_keypad.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> index 068df9888dbf..2e4e263a4a94 100644
> --- a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> +++ b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> @@ -16,8 +16,8 @@
>  #include <linux/interrupt.h>
>  #include <media/cec.h>
>  #include <media/cec-notifier.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #define DRV_NAME	"cros-ec-cec"
>  
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index c7a5dfa36874..5481df4e1216 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -7,11 +7,12 @@
>  
>  #include <linux/mfd/core.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mod_devicetable.h>
>  #include <linux/of_platform.h>
>  #include <linux/platform_device.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  
>  #define DRV_NAME "cros-ec-dev"
> diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> index 11fced7917fc..9800597ccd96 100644
> --- a/drivers/platform/chrome/cros_ec.c
> +++ b/drivers/platform/chrome/cros_ec.c
> @@ -21,7 +21,8 @@
>  #include <linux/interrupt.h>
>  #include <linux/slab.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/suspend.h>
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_chardev.c b/drivers/platform/chrome/cros_ec_chardev.c
> index 1a0a27080026..786b941a60df 100644
> --- a/drivers/platform/chrome/cros_ec_chardev.c
> +++ b/drivers/platform/chrome/cros_ec_chardev.c
> @@ -9,10 +9,10 @@
>  #include <linux/device.h>
>  #include <linux/fs.h>
>  #include <linux/list.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/miscdevice.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spinlock.h>
> diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c
> index 4c2a27f6a6d0..b088d91be9c9 100644
> --- a/drivers/platform/chrome/cros_ec_debugfs.c
> +++ b/drivers/platform/chrome/cros_ec_debugfs.c
> @@ -8,9 +8,10 @@
>  #include <linux/delay.h>
>  #include <linux/fs.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mutex.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/poll.h>
>  #include <linux/sched.h>
> diff --git a/drivers/platform/chrome/cros_ec_i2c.c b/drivers/platform/chrome/cros_ec_i2c.c
> index 6bb82dfa7dae..9bd97bc8454b 100644
> --- a/drivers/platform/chrome/cros_ec_i2c.c
> +++ b/drivers/platform/chrome/cros_ec_i2c.c
> @@ -9,8 +9,8 @@
>  #include <linux/module.h>
>  #include <linux/i2c.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c
> index d30a6650b0b5..caa26da2c788 100644
> --- a/drivers/platform/chrome/cros_ec_lightbar.c
> +++ b/drivers/platform/chrome/cros_ec_lightbar.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/sched.h>
>  #include <linux/types.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
> index 2c7e654cf89c..0c976e95998a 100644
> --- a/drivers/platform/chrome/cros_ec_lpc.c
> +++ b/drivers/platform/chrome/cros_ec_lpc.c
> @@ -16,9 +16,9 @@
>  #include <linux/delay.h>
>  #include <linux/io.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/suspend.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc_reg.c b/drivers/platform/chrome/cros_ec_lpc_reg.c
> index 0f5cd0ac8b49..dec9a779e209 100644
> --- a/drivers/platform/chrome/cros_ec_lpc_reg.c
> +++ b/drivers/platform/chrome/cros_ec_lpc_reg.c
> @@ -4,8 +4,8 @@
>  // Copyright (C) 2016 Google, Inc
>  
>  #include <linux/io.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include "cros_ec_lpc_mec.h"
>  
> diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
> index 3d2325197a68..f659f96bda12 100644
> --- a/drivers/platform/chrome/cros_ec_proto.c
> +++ b/drivers/platform/chrome/cros_ec_proto.c
> @@ -3,10 +3,11 @@
>  //
>  // Copyright (C) 2015 Google, Inc
>  
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_rpmsg.c b/drivers/platform/chrome/cros_ec_rpmsg.c
> index 520e507bfa54..9633e5417686 100644
> --- a/drivers/platform/chrome/cros_ec_rpmsg.c
> +++ b/drivers/platform/chrome/cros_ec_rpmsg.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rpmsg.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c
> index 2e21f2776063..9006e1872942 100644
> --- a/drivers/platform/chrome/cros_ec_spi.c
> +++ b/drivers/platform/chrome/cros_ec_spi.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spi/spi.h>
> diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
> index fe0b7614ae1b..0caeb8d0989d 100644
> --- a/drivers/platform/chrome/cros_ec_sysfs.c
> +++ b/drivers/platform/chrome/cros_ec_sysfs.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_trace.c b/drivers/platform/chrome/cros_ec_trace.c
> index 0a76412095a9..6f80ff4532ae 100644
> --- a/drivers/platform/chrome/cros_ec_trace.c
> +++ b/drivers/platform/chrome/cros_ec_trace.c
> @@ -6,7 +6,7 @@
>  #define TRACE_SYMBOL(a) {a, #a}
>  
>  // Generate the list using the following script:
> -// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/mfd/cros_ec_commands.h
> +// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/platform_data/cros_ec_commands.h
>  #define EC_CMDS \
>  	TRACE_SYMBOL(EC_CMD_PROTO_VERSION), \
>  	TRACE_SYMBOL(EC_CMD_HELLO), \
> diff --git a/drivers/platform/chrome/cros_ec_trace.h b/drivers/platform/chrome/cros_ec_trace.h
> index 7ae3b89c78b9..0dd4df30fa89 100644
> --- a/drivers/platform/chrome/cros_ec_trace.h
> +++ b/drivers/platform/chrome/cros_ec_trace.h
> @@ -11,8 +11,10 @@
>  #if !defined(_CROS_EC_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
>  #define _CROS_EC_TRACE_H_
>  
> +#include <linux/bits.h>
>  #include <linux/types.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include <linux/tracepoint.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_vbc.c b/drivers/platform/chrome/cros_ec_vbc.c
> index 8392a1ec33a7..cffe119e7a7a 100644
> --- a/drivers/platform/chrome/cros_ec_vbc.c
> +++ b/drivers/platform/chrome/cros_ec_vbc.c
> @@ -7,8 +7,9 @@
>  #include <linux/of.h>
>  #include <linux/platform_device.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  
>  #define DRV_NAME "cros-ec-vbc"
> diff --git a/drivers/platform/chrome/cros_usbpd_logger.c b/drivers/platform/chrome/cros_usbpd_logger.c
> index 7c7b267626a0..c549a9b49b56 100644
> --- a/drivers/platform/chrome/cros_usbpd_logger.c
> +++ b/drivers/platform/chrome/cros_usbpd_logger.c
> @@ -6,10 +6,11 @@
>   */
>  
>  #include <linux/ktime.h>
> -#include <linux/math64.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/math64.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  
> diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
> index 3a9ea94c3de3..6cc7c3910e09 100644
> --- a/drivers/power/supply/cros_usbpd-charger.c
> +++ b/drivers/power/supply/cros_usbpd-charger.c
> @@ -5,9 +5,10 @@
>   * Copyright (c) 2014 - 2018 Google, Inc
>   */
>  
> -#include <linux/module.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/power_supply.h>
>  #include <linux/slab.h>
> diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
> index 98f6ac6cf6ab..85bea2d40b7d 100644
> --- a/drivers/pwm/pwm-cros-ec.c
> +++ b/drivers/pwm/pwm-cros-ec.c
> @@ -6,8 +6,8 @@
>   */
>  
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pwm.h>
>  #include <linux/slab.h>
> diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c
> index 4d6bf9304ceb..6909e01936d9 100644
> --- a/drivers/rtc/rtc-cros-ec.c
> +++ b/drivers/rtc/rtc-cros-ec.c
> @@ -6,8 +6,9 @@
>  
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  #include <linux/slab.h>
> diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
> index ce16445411ac..8a91669f5bed 100644
> --- a/include/linux/iio/common/cros_ec_sensors_core.h
> +++ b/include/linux/iio/common/cros_ec_sensors_core.h
> @@ -18,7 +18,8 @@
>  
>  #include <linux/iio/iio.h>
>  #include <linux/irqreturn.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  enum {
>  	CROS_EC_SENSOR_X,
> diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
> index 2a1372d167b9..e0bae49535e1 100644
> --- a/include/linux/mfd/cros_ec.h
> +++ b/include/linux/mfd/cros_ec.h
> @@ -16,184 +16,7 @@
>  #ifndef __LINUX_MFD_CROS_EC_H
>  #define __LINUX_MFD_CROS_EC_H
>  
> -#include <linux/cdev.h>
>  #include <linux/device.h>
> -#include <linux/notifier.h>
> -#include <linux/mfd/cros_ec_commands.h>
> -#include <linux/mutex.h>
> -
> -#define CROS_EC_DEV_NAME "cros_ec"
> -#define CROS_EC_DEV_FP_NAME "cros_fp"
> -#define CROS_EC_DEV_PD_NAME "cros_pd"
> -#define CROS_EC_DEV_TP_NAME "cros_tp"
> -#define CROS_EC_DEV_ISH_NAME "cros_ish"
> -
> -/*
> - * The EC is unresponsive for a time after a reboot command.  Add a
> - * simple delay to make sure that the bus stays locked.
> - */
> -#define EC_REBOOT_DELAY_MS             50
> -
> -/*
> - * Max bus-specific overhead incurred by request/responses.
> - * I2C requires 1 additional byte for requests.
> - * I2C requires 2 additional bytes for responses.
> - * SPI requires up to 32 additional bytes for responses.
> - */
> -#define EC_PROTO_VERSION_UNKNOWN	0
> -#define EC_MAX_REQUEST_OVERHEAD		1
> -#define EC_MAX_RESPONSE_OVERHEAD	32
> -
> -/*
> - * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> - */
> -enum {
> -	EC_MSG_TX_HEADER_BYTES	= 3,
> -	EC_MSG_TX_TRAILER_BYTES	= 1,
> -	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
> -					EC_MSG_TX_TRAILER_BYTES,
> -	EC_MSG_RX_PROTO_BYTES	= 3,
> -
> -	/* Max length of messages for proto 2*/
> -	EC_PROTO2_MSG_BYTES		= EC_PROTO2_MAX_PARAM_SIZE +
> -					EC_MSG_TX_PROTO_BYTES,
> -
> -	EC_MAX_MSG_BYTES		= 64 * 1024,
> -};
> -
> -/**
> - * struct cros_ec_command - Information about a ChromeOS EC command.
> - * @version: Command version number (often 0).
> - * @command: Command to send (EC_CMD_...).
> - * @outsize: Outgoing length in bytes.
> - * @insize: Max number of bytes to accept from the EC.
> - * @result: EC's response to the command (separate from communication failure).
> - * @data: Where to put the incoming data from EC and outgoing data to EC.
> - */
> -struct cros_ec_command {
> -	uint32_t version;
> -	uint32_t command;
> -	uint32_t outsize;
> -	uint32_t insize;
> -	uint32_t result;
> -	uint8_t data[0];
> -};
> -
> -/**
> - * struct cros_ec_device - Information about a ChromeOS EC device.
> - * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> - * @dev: Device pointer for physical comms device
> - * @was_wake_device: True if this device was set to wake the system from
> - *                   sleep at the last suspend.
> - * @cros_class: The class structure for this device.
> - * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> - *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> - *     @bytes: Number of bytes to read. zero means "read a string" (including
> - *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> - *             read. Caller must ensure that the buffer is large enough for the
> - *             result when reading a string.
> - * @max_request: Max size of message requested.
> - * @max_response: Max size of message response.
> - * @max_passthru: Max sice of passthru message.
> - * @proto_version: The protocol version used for this device.
> - * @priv: Private data.
> - * @irq: Interrupt to use.
> - * @id: Device id.
> - * @din: Input buffer (for data from EC). This buffer will always be
> - *       dword-aligned and include enough space for up to 7 word-alignment
> - *       bytes also, so we can ensure that the body of the message is always
> - *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *       happy. Probably word alignment would be OK, there might be a small
> - *       performance advantage to using dword.
> - * @dout: Output buffer (for data to EC). This buffer will always be
> - *        dword-aligned and include enough space for up to 7 word-alignment
> - *        bytes also, so we can ensure that the body of the message is always
> - *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *        happy. Probably word alignment would be OK, there might be a small
> - *        performance advantage to using dword.
> - * @din_size: Size of din buffer to allocate (zero to use static din).
> - * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> - * @wake_enabled: True if this device can wake the system from sleep.
> - * @suspended: True if this device had been suspended.
> - * @cmd_xfer: Send command to EC and get response.
> - *            Returns the number of bytes received if the communication
> - *            succeeded, but that doesn't mean the EC was happy with the
> - *            command. The caller should check msg.result for the EC's result
> - *            code.
> - * @pkt_xfer: Send packet to EC and get response.
> - * @lock: One transaction at a time.
> - * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> - * @host_sleep_v1: True if this EC supports the sleep v1 command.
> - * @event_notifier: Interrupt event notifier for transport devices.
> - * @event_data: Raw payload transferred with the MKBP event.
> - * @event_size: Size in bytes of the event data.
> - * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> - * @ec: The platform_device used by the mfd driver to interface with the
> - *      main EC.
> - * @pd: The platform_device used by the mfd driver to interface with the
> - *      PD behind an EC.
> - */
> -struct cros_ec_device {
> -	/* These are used by other drivers that want to talk to the EC */
> -	const char *phys_name;
> -	struct device *dev;
> -	bool was_wake_device;
> -	struct class *cros_class;
> -	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> -			   unsigned int bytes, void *dest);
> -
> -	/* These are used to implement the platform-specific interface */
> -	u16 max_request;
> -	u16 max_response;
> -	u16 max_passthru;
> -	u16 proto_version;
> -	void *priv;
> -	int irq;
> -	u8 *din;
> -	u8 *dout;
> -	int din_size;
> -	int dout_size;
> -	bool wake_enabled;
> -	bool suspended;
> -	int (*cmd_xfer)(struct cros_ec_device *ec,
> -			struct cros_ec_command *msg);
> -	int (*pkt_xfer)(struct cros_ec_device *ec,
> -			struct cros_ec_command *msg);
> -	struct mutex lock;
> -	bool mkbp_event_supported;
> -	bool host_sleep_v1;
> -	struct blocking_notifier_head event_notifier;
> -
> -	struct ec_response_get_next_event_v1 event_data;
> -	int event_size;
> -	u32 host_event_wake_mask;
> -
> -	/* The platform devices used by the mfd driver */
> -	struct platform_device *ec;
> -	struct platform_device *pd;
> -};
> -
> -/**
> - * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> - * @sensor_num: Id of the sensor, as reported by the EC.
> - */
> -struct cros_ec_sensor_platform {
> -	u8 sensor_num;
> -};
> -
> -/**
> - * struct cros_ec_platform - ChromeOS EC platform information.
> - * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> - *           used in /dev/ and sysfs.
> - * @cmd_offset: Offset to apply for each command. Set when
> - *              registering a device behind another one.
> - */
> -struct cros_ec_platform {
> -	const char *ec_name;
> -	u16 cmd_offset;
> -};
> -
> -struct cros_ec_debugfs;
>  
>  /**
>   * struct cros_ec_dev - ChromeOS EC device entry point.
> @@ -217,133 +40,4 @@ struct cros_ec_dev {
>  
>  #define to_cros_ec_dev(dev)  container_of(dev, struct cros_ec_dev, class_dev)
>  
> -/**
> - * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> - * @ec_dev: Device to suspend.
> - *
> - * This can be called by drivers to handle a suspend event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_suspend(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> - * @ec_dev: Device to resume.
> - *
> - * This can be called by drivers to handle a resume event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_resume(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> - * @ec_dev: Device to register.
> - * @msg: Message to write.
> - *
> - * This is intended to be used by all ChromeOS EC drivers, but at present
> - * only SPI uses it. Once LPC uses the same protocol it can start using it.
> - * I2C could use it now, with a refactor of the existing code.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> -		       struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_check_result() - Check ec_msg->result.
> - * @ec_dev: EC device.
> - * @msg: Message to check.
> - *
> - * This is used by ChromeOS EC drivers to check the ec_msg->result for
> - * errors and to warn about them.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_check_result(struct cros_ec_device *ec_dev,
> -			 struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * Call this to send a command to the ChromeOS EC.  This should be used
> - * instead of calling the EC's cmd_xfer() callback directly.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> -		     struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * This function is identical to cros_ec_cmd_xfer, except it returns success
> - * status only if both the command was transmitted successfully and the EC
> - * replied with success status. It's not necessary to check msg->result when
> - * using this function.
> - *
> - * Return: The number of bytes transferred on success or negative error code.
> - */
> -int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> -			    struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> - * @ec_dev: Device to register.
> - *
> - * Before calling this, allocate a pointer to a new device and then fill
> - * in all the fields up to the --private-- marker.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_register(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_unregister() - Remove a ChromeOS EC.
> - * @ec_dev: Device to unregister.
> - *
> - * Call this to deregister a ChromeOS EC, then clean up any private data.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_unregister(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_query_all() -  Query the protocol version supported by the
> - *         ChromeOS EC.
> - * @ec_dev: Device to register.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_query_all(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - * @wake_event: Pointer to a bool set to true upon return if the event might be
> - *              treated as a wake event. Ignored if null.
> - *
> - * Return: negative error code on errors; 0 for no data; or else number of
> - * bytes received (i.e., an event was retrieved successfully). Event types are
> - * written out to @ec_dev->event_data.event_type on success.
> - */
> -int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> -
> -/**
> - * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - *
> - * When MKBP is supported, when the EC raises an interrupt, we collect the
> - * events raised and call the functions in the ec notifier. This function
> - * is a helper to know which events are raised.
> - *
> - * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> - */
> -u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> -
>  #endif /* __LINUX_MFD_CROS_EC_H */
> diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
> similarity index 100%
> rename from include/linux/mfd/cros_ec_commands.h
> rename to include/linux/platform_data/cros_ec_commands.h
> diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
> new file mode 100644
> index 000000000000..34dd9e5c1779
> --- /dev/null
> +++ b/include/linux/platform_data/cros_ec_proto.h
> @@ -0,0 +1,315 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * ChromeOS Embedded Controller protocol interface.
> + *
> + * Copyright (C) 2012 Google, Inc
> + */
> +
> +#ifndef __LINUX_CROS_EC_PROTO_H
> +#define __LINUX_CROS_EC_PROTO_H
> +
> +#include <linux/device.h>
> +#include <linux/mutex.h>
> +#include <linux/notifier.h>
> +
> +#define CROS_EC_DEV_NAME	"cros_ec"
> +#define CROS_EC_DEV_FP_NAME	"cros_fp"
> +#define CROS_EC_DEV_ISH_NAME	"cros_ish"
> +#define CROS_EC_DEV_PD_NAME	"cros_pd"
> +#define CROS_EC_DEV_TP_NAME	"cros_tp"
> +
> +/*
> + * The EC is unresponsive for a time after a reboot command.  Add a
> + * simple delay to make sure that the bus stays locked.
> + */
> +#define EC_REBOOT_DELAY_MS		50
> +
> +/*
> + * Max bus-specific overhead incurred by request/responses.
> + * I2C requires 1 additional byte for requests.
> + * I2C requires 2 additional bytes for responses.
> + * SPI requires up to 32 additional bytes for responses.
> + */
> +#define EC_PROTO_VERSION_UNKNOWN	0
> +#define EC_MAX_REQUEST_OVERHEAD		1
> +#define EC_MAX_RESPONSE_OVERHEAD	32
> +
> +/*
> + * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> + */
> +enum {
> +	EC_MSG_TX_HEADER_BYTES	= 3,
> +	EC_MSG_TX_TRAILER_BYTES	= 1,
> +	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
> +				  EC_MSG_TX_TRAILER_BYTES,
> +	EC_MSG_RX_PROTO_BYTES	= 3,
> +
> +	/* Max length of messages for proto 2*/
> +	EC_PROTO2_MSG_BYTES	= EC_PROTO2_MAX_PARAM_SIZE +
> +				  EC_MSG_TX_PROTO_BYTES,
> +
> +	EC_MAX_MSG_BYTES	= 64 * 1024,
> +};
> +
> +/**
> + * struct cros_ec_command - Information about a ChromeOS EC command.
> + * @version: Command version number (often 0).
> + * @command: Command to send (EC_CMD_...).
> + * @outsize: Outgoing length in bytes.
> + * @insize: Max number of bytes to accept from the EC.
> + * @result: EC's response to the command (separate from communication failure).
> + * @data: Where to put the incoming data from EC and outgoing data to EC.
> + */
> +struct cros_ec_command {
> +	uint32_t version;
> +	uint32_t command;
> +	uint32_t outsize;
> +	uint32_t insize;
> +	uint32_t result;
> +	uint8_t data[0];
> +};
> +
> +/**
> + * struct cros_ec_device - Information about a ChromeOS EC device.
> + * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> + * @dev: Device pointer for physical comms device
> + * @was_wake_device: True if this device was set to wake the system from
> + *                   sleep at the last suspend.
> + * @cros_class: The class structure for this device.
> + * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> + *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> + *     @bytes: Number of bytes to read. zero means "read a string" (including
> + *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> + *             read. Caller must ensure that the buffer is large enough for the
> + *             result when reading a string.
> + * @max_request: Max size of message requested.
> + * @max_response: Max size of message response.
> + * @max_passthru: Max sice of passthru message.
> + * @proto_version: The protocol version used for this device.
> + * @priv: Private data.
> + * @irq: Interrupt to use.
> + * @id: Device id.
> + * @din: Input buffer (for data from EC). This buffer will always be
> + *       dword-aligned and include enough space for up to 7 word-alignment
> + *       bytes also, so we can ensure that the body of the message is always
> + *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *       happy. Probably word alignment would be OK, there might be a small
> + *       performance advantage to using dword.
> + * @dout: Output buffer (for data to EC). This buffer will always be
> + *        dword-aligned and include enough space for up to 7 word-alignment
> + *        bytes also, so we can ensure that the body of the message is always
> + *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *        happy. Probably word alignment would be OK, there might be a small
> + *        performance advantage to using dword.
> + * @din_size: Size of din buffer to allocate (zero to use static din).
> + * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> + * @wake_enabled: True if this device can wake the system from sleep.
> + * @suspended: True if this device had been suspended.
> + * @cmd_xfer: Send command to EC and get response.
> + *            Returns the number of bytes received if the communication
> + *            succeeded, but that doesn't mean the EC was happy with the
> + *            command. The caller should check msg.result for the EC's result
> + *            code.
> + * @pkt_xfer: Send packet to EC and get response.
> + * @lock: One transaction at a time.
> + * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> + * @host_sleep_v1: True if this EC supports the sleep v1 command.
> + * @event_notifier: Interrupt event notifier for transport devices.
> + * @event_data: Raw payload transferred with the MKBP event.
> + * @event_size: Size in bytes of the event data.
> + * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> + * @ec: The platform_device used by the mfd driver to interface with the
> + *      main EC.
> + * @pd: The platform_device used by the mfd driver to interface with the
> + *      PD behind an EC.
> + */
> +struct cros_ec_device {
> +	/* These are used by other drivers that want to talk to the EC */
> +	const char *phys_name;
> +	struct device *dev;
> +	bool was_wake_device;
> +	struct class *cros_class;
> +	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> +			   unsigned int bytes, void *dest);
> +
> +	/* These are used to implement the platform-specific interface */
> +	u16 max_request;
> +	u16 max_response;
> +	u16 max_passthru;
> +	u16 proto_version;
> +	void *priv;
> +	int irq;
> +	u8 *din;
> +	u8 *dout;
> +	int din_size;
> +	int dout_size;
> +	bool wake_enabled;
> +	bool suspended;
> +	int (*cmd_xfer)(struct cros_ec_device *ec,
> +			struct cros_ec_command *msg);
> +	int (*pkt_xfer)(struct cros_ec_device *ec,
> +			struct cros_ec_command *msg);
> +	struct mutex lock;
> +	bool mkbp_event_supported;
> +	bool host_sleep_v1;
> +	struct blocking_notifier_head event_notifier;
> +
> +	struct ec_response_get_next_event_v1 event_data;
> +	int event_size;
> +	u32 host_event_wake_mask;
> +
> +	/* The platform devices used by the mfd driver */
> +	struct platform_device *ec;
> +	struct platform_device *pd;
> +};
> +
> +/**
> + * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> + * @sensor_num: Id of the sensor, as reported by the EC.
> + */
> +struct cros_ec_sensor_platform {
> +	u8 sensor_num;
> +};
> +
> +/**
> + * struct cros_ec_platform - ChromeOS EC platform information.
> + * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> + *           used in /dev/ and sysfs.
> + * @cmd_offset: Offset to apply for each command. Set when
> + *              registering a device behind another one.
> + */
> +struct cros_ec_platform {
> +	const char *ec_name;
> +	u16 cmd_offset;
> +};
> +
> +/**
> + * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> + * @ec_dev: Device to suspend.
> + *
> + * This can be called by drivers to handle a suspend event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_suspend(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> + * @ec_dev: Device to resume.
> + *
> + * This can be called by drivers to handle a resume event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_resume(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> + * @ec_dev: Device to register.
> + * @msg: Message to write.
> + *
> + * This is intended to be used by all ChromeOS EC drivers, but at present
> + * only SPI uses it. Once LPC uses the same protocol it can start using it.
> + * I2C could use it now, with a refactor of the existing code.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> +		       struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_check_result() - Check ec_msg->result.
> + * @ec_dev: EC device.
> + * @msg: Message to check.
> + *
> + * This is used by ChromeOS EC drivers to check the ec_msg->result for
> + * errors and to warn about them.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_check_result(struct cros_ec_device *ec_dev,
> +			 struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * Call this to send a command to the ChromeOS EC.  This should be used
> + * instead of calling the EC's cmd_xfer() callback directly.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> +		     struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * This function is identical to cros_ec_cmd_xfer, except it returns success
> + * status only if both the command was transmitted successfully and the EC
> + * replied with success status. It's not necessary to check msg->result when
> + * using this function.
> + *
> + * Return: The number of bytes transferred on success or negative error code.
> + */
> +int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> +			    struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> + * @ec_dev: Device to register.
> + *
> + * Before calling this, allocate a pointer to a new device and then fill
> + * in all the fields up to the --private-- marker.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_register(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_unregister() - Remove a ChromeOS EC.
> + * @ec_dev: Device to unregister.
> + *
> + * Call this to deregister a ChromeOS EC, then clean up any private data.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_unregister(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_query_all() -  Query the protocol version supported by the
> + *         ChromeOS EC.
> + * @ec_dev: Device to register.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_query_all(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + * @wake_event: Pointer to a bool set to true upon return if the event might be
> + *              treated as a wake event. Ignored if null.
> + *
> + * Return: negative error code on errors; 0 for no data; or else number of
> + * bytes received (i.e., an event was retrieved successfully). Event types are
> + * written out to @ec_dev->event_data.event_type on success.
> + */
> +int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> +
> +/**
> + * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + *
> + * When MKBP is supported, when the EC raises an interrupt, we collect the
> + * events raised and call the functions in the ec notifier. This function
> + * is a helper to know which events are raised.
> + *
> + * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> + */
> +u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> +
> +#endif /* __LINUX_CROS_EC_PROTO_H */
> diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
> index 87830ed5ebf4..79bb4081d3c2 100644
> --- a/sound/soc/codecs/cros_ec_codec.c
> +++ b/sound/soc/codecs/cros_ec_codec.c
> @@ -9,9 +9,9 @@
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <sound/pcm.h>
>  #include <sound/pcm_params.h>

Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Benjamin Tissoires]

On Tue, Jun 4, 2019 at 5:21 PM Enric Balletbo i Serra
<enric.balletbo@collabora.com> wrote:
>
> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
> we have a linux/mfd/cros_ec_commands.h file that is non related to the
> multifunction device (in the sense that is not exporting any function of
> the mfd device). This causes crossed includes between mfd and
> platform/chrome subsystems and makes the code difficult to read, apart
> from creating 'curious' situations where a platform/chrome driver includes
> a linux/mfd/cros_ec.h file just to get the exported functions that are
> implemented in another platform/chrome driver.
>
> In order to have a better separation on what the cros-ec multifunction
> driver does and what the cros-ec core provides move and rework the
> affected includes doing:
>
>  - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
>  - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
>    driver from include/linux/mfd/cros_ec.h to a new file
>    include/linux/platform_data/cros_ec_proto.h
>  - Update all the drivers with the new includes, so
>    - Drivers that only need to know about the protocol include
>      - linux/platform_data/cros_ec_proto.h
>      - linux/platform_data/cros_ec_commands.h
>    - Drivers that need to know about the cros-ec mfd device also include
>      - linux/mfd/cros_ec.h
>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---

Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> # for the HID part

Cheers,
Benjamin

>
>  drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
>  drivers/hid/hid-google-hammer.c               |   4 +-
>  drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
>  drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
>  .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
>  drivers/iio/light/cros_ec_light_prox.c        |   3 +-
>  drivers/iio/pressure/cros_ec_baro.c           |   3 +-
>  drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
>  .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
>  drivers/mfd/cros_ec_dev.c                     |   3 +-
>  drivers/platform/chrome/cros_ec.c             |   3 +-
>  drivers/platform/chrome/cros_ec_chardev.c     |   4 +-
>  drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
>  drivers/platform/chrome/cros_ec_i2c.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
>  drivers/platform/chrome/cros_ec_lpc.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
>  drivers/platform/chrome/cros_ec_proto.c       |   3 +-
>  drivers/platform/chrome/cros_ec_rpmsg.c       |   4 +-
>  drivers/platform/chrome/cros_ec_spi.c         |   4 +-
>  drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
>  drivers/platform/chrome/cros_ec_trace.c       |   2 +-
>  drivers/platform/chrome/cros_ec_trace.h       |   4 +-
>  drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
>  drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
>  drivers/power/supply/cros_usbpd-charger.c     |   5 +-
>  drivers/pwm/pwm-cros-ec.c                     |   4 +-
>  drivers/rtc/rtc-cros-ec.c                     |   3 +-
>  .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
>  include/linux/mfd/cros_ec.h                   | 306 -----------------
>  .../{mfd => platform_data}/cros_ec_commands.h |   0
>  include/linux/platform_data/cros_ec_proto.h   | 315 ++++++++++++++++++
>  sound/soc/codecs/cros_ec_codec.c              |   4 +-
>  34 files changed, 379 insertions(+), 351 deletions(-)
>  rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
>  create mode 100644 include/linux/platform_data/cros_ec_proto.h
>
> diff --git a/drivers/extcon/extcon-usbc-cros-ec.c b/drivers/extcon/extcon-usbc-cros-ec.c
> index 43c0a936ab82..5290cc2d19d9 100644
> --- a/drivers/extcon/extcon-usbc-cros-ec.c
> +++ b/drivers/extcon/extcon-usbc-cros-ec.c
> @@ -6,10 +6,11 @@
>
>  #include <linux/extcon-provider.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/module.h>
>  #include <linux/notifier.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/sched.h>
> diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c
> index ee5e0bdcf078..84f8c127ebdc 100644
> --- a/drivers/hid/hid-google-hammer.c
> +++ b/drivers/hid/hid-google-hammer.c
> @@ -16,9 +16,9 @@
>  #include <linux/acpi.h>
>  #include <linux/hid.h>
>  #include <linux/leds.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pm_wakeup.h>
>  #include <asm/unaligned.h>
> diff --git a/drivers/i2c/busses/i2c-cros-ec-tunnel.c b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> index 82bcd9a78759..c551aa96a2e3 100644
> --- a/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> +++ b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> @@ -5,8 +5,8 @@
>
>  #include <linux/module.h>
>  #include <linux/i2c.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>
> diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
> index 46bb2e421bb9..fd9a634f741e 100644
> --- a/drivers/iio/accel/cros_ec_accel_legacy.c
> +++ b/drivers/iio/accel/cros_ec_accel_legacy.c
> @@ -18,9 +18,10 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>
>  #define DRV_NAME       "cros-ec-accel-legacy"
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> index 17af4e0fd5f8..40dc24ff0ee5 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> @@ -17,8 +17,9 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> index 719a0df5aeeb..fd63315399ac 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> @@ -14,9 +14,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>
>  static char *cros_ec_loc[] = {
> diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
> index 308ee6ff2e22..437e0eae9178 100644
> --- a/drivers/iio/light/cros_ec_light_prox.c
> +++ b/drivers/iio/light/cros_ec_light_prox.c
> @@ -15,8 +15,9 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>
> diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
> index 034ce98d6e97..956dc01f1295 100644
> --- a/drivers/iio/pressure/cros_ec_baro.c
> +++ b/drivers/iio/pressure/cros_ec_baro.c
> @@ -15,9 +15,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>
>  /*
> diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
> index d56001181598..2b71c5a51f90 100644
> --- a/drivers/input/keyboard/cros_ec_keyb.c
> +++ b/drivers/input/keyboard/cros_ec_keyb.c
> @@ -22,8 +22,8 @@
>  #include <linux/slab.h>
>  #include <linux/sysrq.h>
>  #include <linux/input/matrix_keypad.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>
>  #include <asm/unaligned.h>
>
> diff --git a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> index 068df9888dbf..2e4e263a4a94 100644
> --- a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> +++ b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> @@ -16,8 +16,8 @@
>  #include <linux/interrupt.h>
>  #include <media/cec.h>
>  #include <media/cec-notifier.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>
>  #define DRV_NAME       "cros-ec-cec"
>
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index c7a5dfa36874..5481df4e1216 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -7,11 +7,12 @@
>
>  #include <linux/mfd/core.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mod_devicetable.h>
>  #include <linux/of_platform.h>
>  #include <linux/platform_device.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>
>  #define DRV_NAME "cros-ec-dev"
> diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> index 11fced7917fc..9800597ccd96 100644
> --- a/drivers/platform/chrome/cros_ec.c
> +++ b/drivers/platform/chrome/cros_ec.c
> @@ -21,7 +21,8 @@
>  #include <linux/interrupt.h>
>  #include <linux/slab.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/suspend.h>
>  #include <asm/unaligned.h>
>
> diff --git a/drivers/platform/chrome/cros_ec_chardev.c b/drivers/platform/chrome/cros_ec_chardev.c
> index 1a0a27080026..786b941a60df 100644
> --- a/drivers/platform/chrome/cros_ec_chardev.c
> +++ b/drivers/platform/chrome/cros_ec_chardev.c
> @@ -9,10 +9,10 @@
>  #include <linux/device.h>
>  #include <linux/fs.h>
>  #include <linux/list.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/miscdevice.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spinlock.h>
> diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c
> index 4c2a27f6a6d0..b088d91be9c9 100644
> --- a/drivers/platform/chrome/cros_ec_debugfs.c
> +++ b/drivers/platform/chrome/cros_ec_debugfs.c
> @@ -8,9 +8,10 @@
>  #include <linux/delay.h>
>  #include <linux/fs.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mutex.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/poll.h>
>  #include <linux/sched.h>
> diff --git a/drivers/platform/chrome/cros_ec_i2c.c b/drivers/platform/chrome/cros_ec_i2c.c
> index 6bb82dfa7dae..9bd97bc8454b 100644
> --- a/drivers/platform/chrome/cros_ec_i2c.c
> +++ b/drivers/platform/chrome/cros_ec_i2c.c
> @@ -9,8 +9,8 @@
>  #include <linux/module.h>
>  #include <linux/i2c.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>
> diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c
> index d30a6650b0b5..caa26da2c788 100644
> --- a/drivers/platform/chrome/cros_ec_lightbar.c
> +++ b/drivers/platform/chrome/cros_ec_lightbar.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/sched.h>
>  #include <linux/types.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
> index 2c7e654cf89c..0c976e95998a 100644
> --- a/drivers/platform/chrome/cros_ec_lpc.c
> +++ b/drivers/platform/chrome/cros_ec_lpc.c
> @@ -16,9 +16,9 @@
>  #include <linux/delay.h>
>  #include <linux/io.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/suspend.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc_reg.c b/drivers/platform/chrome/cros_ec_lpc_reg.c
> index 0f5cd0ac8b49..dec9a779e209 100644
> --- a/drivers/platform/chrome/cros_ec_lpc_reg.c
> +++ b/drivers/platform/chrome/cros_ec_lpc_reg.c
> @@ -4,8 +4,8 @@
>  // Copyright (C) 2016 Google, Inc
>
>  #include <linux/io.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>
>  #include "cros_ec_lpc_mec.h"
>
> diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
> index 3d2325197a68..f659f96bda12 100644
> --- a/drivers/platform/chrome/cros_ec_proto.c
> +++ b/drivers/platform/chrome/cros_ec_proto.c
> @@ -3,10 +3,11 @@
>  //
>  // Copyright (C) 2015 Google, Inc
>
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  #include <asm/unaligned.h>
>
> diff --git a/drivers/platform/chrome/cros_ec_rpmsg.c b/drivers/platform/chrome/cros_ec_rpmsg.c
> index 520e507bfa54..9633e5417686 100644
> --- a/drivers/platform/chrome/cros_ec_rpmsg.c
> +++ b/drivers/platform/chrome/cros_ec_rpmsg.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rpmsg.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c
> index 2e21f2776063..9006e1872942 100644
> --- a/drivers/platform/chrome/cros_ec_spi.c
> +++ b/drivers/platform/chrome/cros_ec_spi.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spi/spi.h>
> diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
> index fe0b7614ae1b..0caeb8d0989d 100644
> --- a/drivers/platform/chrome/cros_ec_sysfs.c
> +++ b/drivers/platform/chrome/cros_ec_sysfs.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_trace.c b/drivers/platform/chrome/cros_ec_trace.c
> index 0a76412095a9..6f80ff4532ae 100644
> --- a/drivers/platform/chrome/cros_ec_trace.c
> +++ b/drivers/platform/chrome/cros_ec_trace.c
> @@ -6,7 +6,7 @@
>  #define TRACE_SYMBOL(a) {a, #a}
>
>  // Generate the list using the following script:
> -// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/mfd/cros_ec_commands.h
> +// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/platform_data/cros_ec_commands.h
>  #define EC_CMDS \
>         TRACE_SYMBOL(EC_CMD_PROTO_VERSION), \
>         TRACE_SYMBOL(EC_CMD_HELLO), \
> diff --git a/drivers/platform/chrome/cros_ec_trace.h b/drivers/platform/chrome/cros_ec_trace.h
> index 7ae3b89c78b9..0dd4df30fa89 100644
> --- a/drivers/platform/chrome/cros_ec_trace.h
> +++ b/drivers/platform/chrome/cros_ec_trace.h
> @@ -11,8 +11,10 @@
>  #if !defined(_CROS_EC_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
>  #define _CROS_EC_TRACE_H_
>
> +#include <linux/bits.h>
>  #include <linux/types.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>
>  #include <linux/tracepoint.h>
>
> diff --git a/drivers/platform/chrome/cros_ec_vbc.c b/drivers/platform/chrome/cros_ec_vbc.c
> index 8392a1ec33a7..cffe119e7a7a 100644
> --- a/drivers/platform/chrome/cros_ec_vbc.c
> +++ b/drivers/platform/chrome/cros_ec_vbc.c
> @@ -7,8 +7,9 @@
>  #include <linux/of.h>
>  #include <linux/platform_device.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>
>  #define DRV_NAME "cros-ec-vbc"
> diff --git a/drivers/platform/chrome/cros_usbpd_logger.c b/drivers/platform/chrome/cros_usbpd_logger.c
> index 7c7b267626a0..c549a9b49b56 100644
> --- a/drivers/platform/chrome/cros_usbpd_logger.c
> +++ b/drivers/platform/chrome/cros_usbpd_logger.c
> @@ -6,10 +6,11 @@
>   */
>
>  #include <linux/ktime.h>
> -#include <linux/math64.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/math64.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>
> diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
> index 3a9ea94c3de3..6cc7c3910e09 100644
> --- a/drivers/power/supply/cros_usbpd-charger.c
> +++ b/drivers/power/supply/cros_usbpd-charger.c
> @@ -5,9 +5,10 @@
>   * Copyright (c) 2014 - 2018 Google, Inc
>   */
>
> -#include <linux/module.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/power_supply.h>
>  #include <linux/slab.h>
> diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
> index 98f6ac6cf6ab..85bea2d40b7d 100644
> --- a/drivers/pwm/pwm-cros-ec.c
> +++ b/drivers/pwm/pwm-cros-ec.c
> @@ -6,8 +6,8 @@
>   */
>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pwm.h>
>  #include <linux/slab.h>
> diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c
> index 4d6bf9304ceb..6909e01936d9 100644
> --- a/drivers/rtc/rtc-cros-ec.c
> +++ b/drivers/rtc/rtc-cros-ec.c
> @@ -6,8 +6,9 @@
>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  #include <linux/slab.h>
> diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
> index ce16445411ac..8a91669f5bed 100644
> --- a/include/linux/iio/common/cros_ec_sensors_core.h
> +++ b/include/linux/iio/common/cros_ec_sensors_core.h
> @@ -18,7 +18,8 @@
>
>  #include <linux/iio/iio.h>
>  #include <linux/irqreturn.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>
>  enum {
>         CROS_EC_SENSOR_X,
> diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
> index 2a1372d167b9..e0bae49535e1 100644
> --- a/include/linux/mfd/cros_ec.h
> +++ b/include/linux/mfd/cros_ec.h
> @@ -16,184 +16,7 @@
>  #ifndef __LINUX_MFD_CROS_EC_H
>  #define __LINUX_MFD_CROS_EC_H
>
> -#include <linux/cdev.h>
>  #include <linux/device.h>
> -#include <linux/notifier.h>
> -#include <linux/mfd/cros_ec_commands.h>
> -#include <linux/mutex.h>
> -
> -#define CROS_EC_DEV_NAME "cros_ec"
> -#define CROS_EC_DEV_FP_NAME "cros_fp"
> -#define CROS_EC_DEV_PD_NAME "cros_pd"
> -#define CROS_EC_DEV_TP_NAME "cros_tp"
> -#define CROS_EC_DEV_ISH_NAME "cros_ish"
> -
> -/*
> - * The EC is unresponsive for a time after a reboot command.  Add a
> - * simple delay to make sure that the bus stays locked.
> - */
> -#define EC_REBOOT_DELAY_MS             50
> -
> -/*
> - * Max bus-specific overhead incurred by request/responses.
> - * I2C requires 1 additional byte for requests.
> - * I2C requires 2 additional bytes for responses.
> - * SPI requires up to 32 additional bytes for responses.
> - */
> -#define EC_PROTO_VERSION_UNKNOWN       0
> -#define EC_MAX_REQUEST_OVERHEAD                1
> -#define EC_MAX_RESPONSE_OVERHEAD       32
> -
> -/*
> - * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> - */
> -enum {
> -       EC_MSG_TX_HEADER_BYTES  = 3,
> -       EC_MSG_TX_TRAILER_BYTES = 1,
> -       EC_MSG_TX_PROTO_BYTES   = EC_MSG_TX_HEADER_BYTES +
> -                                       EC_MSG_TX_TRAILER_BYTES,
> -       EC_MSG_RX_PROTO_BYTES   = 3,
> -
> -       /* Max length of messages for proto 2*/
> -       EC_PROTO2_MSG_BYTES             = EC_PROTO2_MAX_PARAM_SIZE +
> -                                       EC_MSG_TX_PROTO_BYTES,
> -
> -       EC_MAX_MSG_BYTES                = 64 * 1024,
> -};
> -
> -/**
> - * struct cros_ec_command - Information about a ChromeOS EC command.
> - * @version: Command version number (often 0).
> - * @command: Command to send (EC_CMD_...).
> - * @outsize: Outgoing length in bytes.
> - * @insize: Max number of bytes to accept from the EC.
> - * @result: EC's response to the command (separate from communication failure).
> - * @data: Where to put the incoming data from EC and outgoing data to EC.
> - */
> -struct cros_ec_command {
> -       uint32_t version;
> -       uint32_t command;
> -       uint32_t outsize;
> -       uint32_t insize;
> -       uint32_t result;
> -       uint8_t data[0];
> -};
> -
> -/**
> - * struct cros_ec_device - Information about a ChromeOS EC device.
> - * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> - * @dev: Device pointer for physical comms device
> - * @was_wake_device: True if this device was set to wake the system from
> - *                   sleep at the last suspend.
> - * @cros_class: The class structure for this device.
> - * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> - *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> - *     @bytes: Number of bytes to read. zero means "read a string" (including
> - *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> - *             read. Caller must ensure that the buffer is large enough for the
> - *             result when reading a string.
> - * @max_request: Max size of message requested.
> - * @max_response: Max size of message response.
> - * @max_passthru: Max sice of passthru message.
> - * @proto_version: The protocol version used for this device.
> - * @priv: Private data.
> - * @irq: Interrupt to use.
> - * @id: Device id.
> - * @din: Input buffer (for data from EC). This buffer will always be
> - *       dword-aligned and include enough space for up to 7 word-alignment
> - *       bytes also, so we can ensure that the body of the message is always
> - *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *       happy. Probably word alignment would be OK, there might be a small
> - *       performance advantage to using dword.
> - * @dout: Output buffer (for data to EC). This buffer will always be
> - *        dword-aligned and include enough space for up to 7 word-alignment
> - *        bytes also, so we can ensure that the body of the message is always
> - *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *        happy. Probably word alignment would be OK, there might be a small
> - *        performance advantage to using dword.
> - * @din_size: Size of din buffer to allocate (zero to use static din).
> - * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> - * @wake_enabled: True if this device can wake the system from sleep.
> - * @suspended: True if this device had been suspended.
> - * @cmd_xfer: Send command to EC and get response.
> - *            Returns the number of bytes received if the communication
> - *            succeeded, but that doesn't mean the EC was happy with the
> - *            command. The caller should check msg.result for the EC's result
> - *            code.
> - * @pkt_xfer: Send packet to EC and get response.
> - * @lock: One transaction at a time.
> - * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> - * @host_sleep_v1: True if this EC supports the sleep v1 command.
> - * @event_notifier: Interrupt event notifier for transport devices.
> - * @event_data: Raw payload transferred with the MKBP event.
> - * @event_size: Size in bytes of the event data.
> - * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> - * @ec: The platform_device used by the mfd driver to interface with the
> - *      main EC.
> - * @pd: The platform_device used by the mfd driver to interface with the
> - *      PD behind an EC.
> - */
> -struct cros_ec_device {
> -       /* These are used by other drivers that want to talk to the EC */
> -       const char *phys_name;
> -       struct device *dev;
> -       bool was_wake_device;
> -       struct class *cros_class;
> -       int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> -                          unsigned int bytes, void *dest);
> -
> -       /* These are used to implement the platform-specific interface */
> -       u16 max_request;
> -       u16 max_response;
> -       u16 max_passthru;
> -       u16 proto_version;
> -       void *priv;
> -       int irq;
> -       u8 *din;
> -       u8 *dout;
> -       int din_size;
> -       int dout_size;
> -       bool wake_enabled;
> -       bool suspended;
> -       int (*cmd_xfer)(struct cros_ec_device *ec,
> -                       struct cros_ec_command *msg);
> -       int (*pkt_xfer)(struct cros_ec_device *ec,
> -                       struct cros_ec_command *msg);
> -       struct mutex lock;
> -       bool mkbp_event_supported;
> -       bool host_sleep_v1;
> -       struct blocking_notifier_head event_notifier;
> -
> -       struct ec_response_get_next_event_v1 event_data;
> -       int event_size;
> -       u32 host_event_wake_mask;
> -
> -       /* The platform devices used by the mfd driver */
> -       struct platform_device *ec;
> -       struct platform_device *pd;
> -};
> -
> -/**
> - * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> - * @sensor_num: Id of the sensor, as reported by the EC.
> - */
> -struct cros_ec_sensor_platform {
> -       u8 sensor_num;
> -};
> -
> -/**
> - * struct cros_ec_platform - ChromeOS EC platform information.
> - * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> - *           used in /dev/ and sysfs.
> - * @cmd_offset: Offset to apply for each command. Set when
> - *              registering a device behind another one.
> - */
> -struct cros_ec_platform {
> -       const char *ec_name;
> -       u16 cmd_offset;
> -};
> -
> -struct cros_ec_debugfs;
>
>  /**
>   * struct cros_ec_dev - ChromeOS EC device entry point.
> @@ -217,133 +40,4 @@ struct cros_ec_dev {
>
>  #define to_cros_ec_dev(dev)  container_of(dev, struct cros_ec_dev, class_dev)
>
> -/**
> - * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> - * @ec_dev: Device to suspend.
> - *
> - * This can be called by drivers to handle a suspend event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_suspend(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> - * @ec_dev: Device to resume.
> - *
> - * This can be called by drivers to handle a resume event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_resume(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> - * @ec_dev: Device to register.
> - * @msg: Message to write.
> - *
> - * This is intended to be used by all ChromeOS EC drivers, but at present
> - * only SPI uses it. Once LPC uses the same protocol it can start using it.
> - * I2C could use it now, with a refactor of the existing code.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> -                      struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_check_result() - Check ec_msg->result.
> - * @ec_dev: EC device.
> - * @msg: Message to check.
> - *
> - * This is used by ChromeOS EC drivers to check the ec_msg->result for
> - * errors and to warn about them.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_check_result(struct cros_ec_device *ec_dev,
> -                        struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * Call this to send a command to the ChromeOS EC.  This should be used
> - * instead of calling the EC's cmd_xfer() callback directly.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> -                    struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * This function is identical to cros_ec_cmd_xfer, except it returns success
> - * status only if both the command was transmitted successfully and the EC
> - * replied with success status. It's not necessary to check msg->result when
> - * using this function.
> - *
> - * Return: The number of bytes transferred on success or negative error code.
> - */
> -int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> -                           struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> - * @ec_dev: Device to register.
> - *
> - * Before calling this, allocate a pointer to a new device and then fill
> - * in all the fields up to the --private-- marker.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_register(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_unregister() - Remove a ChromeOS EC.
> - * @ec_dev: Device to unregister.
> - *
> - * Call this to deregister a ChromeOS EC, then clean up any private data.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_unregister(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_query_all() -  Query the protocol version supported by the
> - *         ChromeOS EC.
> - * @ec_dev: Device to register.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_query_all(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - * @wake_event: Pointer to a bool set to true upon return if the event might be
> - *              treated as a wake event. Ignored if null.
> - *
> - * Return: negative error code on errors; 0 for no data; or else number of
> - * bytes received (i.e., an event was retrieved successfully). Event types are
> - * written out to @ec_dev->event_data.event_type on success.
> - */
> -int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> -
> -/**
> - * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - *
> - * When MKBP is supported, when the EC raises an interrupt, we collect the
> - * events raised and call the functions in the ec notifier. This function
> - * is a helper to know which events are raised.
> - *
> - * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> - */
> -u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> -
>  #endif /* __LINUX_MFD_CROS_EC_H */
> diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
> similarity index 100%
> rename from include/linux/mfd/cros_ec_commands.h
> rename to include/linux/platform_data/cros_ec_commands.h
> diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
> new file mode 100644
> index 000000000000..34dd9e5c1779
> --- /dev/null
> +++ b/include/linux/platform_data/cros_ec_proto.h
> @@ -0,0 +1,315 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * ChromeOS Embedded Controller protocol interface.
> + *
> + * Copyright (C) 2012 Google, Inc
> + */
> +
> +#ifndef __LINUX_CROS_EC_PROTO_H
> +#define __LINUX_CROS_EC_PROTO_H
> +
> +#include <linux/device.h>
> +#include <linux/mutex.h>
> +#include <linux/notifier.h>
> +
> +#define CROS_EC_DEV_NAME       "cros_ec"
> +#define CROS_EC_DEV_FP_NAME    "cros_fp"
> +#define CROS_EC_DEV_ISH_NAME   "cros_ish"
> +#define CROS_EC_DEV_PD_NAME    "cros_pd"
> +#define CROS_EC_DEV_TP_NAME    "cros_tp"
> +
> +/*
> + * The EC is unresponsive for a time after a reboot command.  Add a
> + * simple delay to make sure that the bus stays locked.
> + */
> +#define EC_REBOOT_DELAY_MS             50
> +
> +/*
> + * Max bus-specific overhead incurred by request/responses.
> + * I2C requires 1 additional byte for requests.
> + * I2C requires 2 additional bytes for responses.
> + * SPI requires up to 32 additional bytes for responses.
> + */
> +#define EC_PROTO_VERSION_UNKNOWN       0
> +#define EC_MAX_REQUEST_OVERHEAD                1
> +#define EC_MAX_RESPONSE_OVERHEAD       32
> +
> +/*
> + * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> + */
> +enum {
> +       EC_MSG_TX_HEADER_BYTES  = 3,
> +       EC_MSG_TX_TRAILER_BYTES = 1,
> +       EC_MSG_TX_PROTO_BYTES   = EC_MSG_TX_HEADER_BYTES +
> +                                 EC_MSG_TX_TRAILER_BYTES,
> +       EC_MSG_RX_PROTO_BYTES   = 3,
> +
> +       /* Max length of messages for proto 2*/
> +       EC_PROTO2_MSG_BYTES     = EC_PROTO2_MAX_PARAM_SIZE +
> +                                 EC_MSG_TX_PROTO_BYTES,
> +
> +       EC_MAX_MSG_BYTES        = 64 * 1024,
> +};
> +
> +/**
> + * struct cros_ec_command - Information about a ChromeOS EC command.
> + * @version: Command version number (often 0).
> + * @command: Command to send (EC_CMD_...).
> + * @outsize: Outgoing length in bytes.
> + * @insize: Max number of bytes to accept from the EC.
> + * @result: EC's response to the command (separate from communication failure).
> + * @data: Where to put the incoming data from EC and outgoing data to EC.
> + */
> +struct cros_ec_command {
> +       uint32_t version;
> +       uint32_t command;
> +       uint32_t outsize;
> +       uint32_t insize;
> +       uint32_t result;
> +       uint8_t data[0];
> +};
> +
> +/**
> + * struct cros_ec_device - Information about a ChromeOS EC device.
> + * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> + * @dev: Device pointer for physical comms device
> + * @was_wake_device: True if this device was set to wake the system from
> + *                   sleep at the last suspend.
> + * @cros_class: The class structure for this device.
> + * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> + *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> + *     @bytes: Number of bytes to read. zero means "read a string" (including
> + *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> + *             read. Caller must ensure that the buffer is large enough for the
> + *             result when reading a string.
> + * @max_request: Max size of message requested.
> + * @max_response: Max size of message response.
> + * @max_passthru: Max sice of passthru message.
> + * @proto_version: The protocol version used for this device.
> + * @priv: Private data.
> + * @irq: Interrupt to use.
> + * @id: Device id.
> + * @din: Input buffer (for data from EC). This buffer will always be
> + *       dword-aligned and include enough space for up to 7 word-alignment
> + *       bytes also, so we can ensure that the body of the message is always
> + *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *       happy. Probably word alignment would be OK, there might be a small
> + *       performance advantage to using dword.
> + * @dout: Output buffer (for data to EC). This buffer will always be
> + *        dword-aligned and include enough space for up to 7 word-alignment
> + *        bytes also, so we can ensure that the body of the message is always
> + *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *        happy. Probably word alignment would be OK, there might be a small
> + *        performance advantage to using dword.
> + * @din_size: Size of din buffer to allocate (zero to use static din).
> + * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> + * @wake_enabled: True if this device can wake the system from sleep.
> + * @suspended: True if this device had been suspended.
> + * @cmd_xfer: Send command to EC and get response.
> + *            Returns the number of bytes received if the communication
> + *            succeeded, but that doesn't mean the EC was happy with the
> + *            command. The caller should check msg.result for the EC's result
> + *            code.
> + * @pkt_xfer: Send packet to EC and get response.
> + * @lock: One transaction at a time.
> + * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> + * @host_sleep_v1: True if this EC supports the sleep v1 command.
> + * @event_notifier: Interrupt event notifier for transport devices.
> + * @event_data: Raw payload transferred with the MKBP event.
> + * @event_size: Size in bytes of the event data.
> + * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> + * @ec: The platform_device used by the mfd driver to interface with the
> + *      main EC.
> + * @pd: The platform_device used by the mfd driver to interface with the
> + *      PD behind an EC.
> + */
> +struct cros_ec_device {
> +       /* These are used by other drivers that want to talk to the EC */
> +       const char *phys_name;
> +       struct device *dev;
> +       bool was_wake_device;
> +       struct class *cros_class;
> +       int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> +                          unsigned int bytes, void *dest);
> +
> +       /* These are used to implement the platform-specific interface */
> +       u16 max_request;
> +       u16 max_response;
> +       u16 max_passthru;
> +       u16 proto_version;
> +       void *priv;
> +       int irq;
> +       u8 *din;
> +       u8 *dout;
> +       int din_size;
> +       int dout_size;
> +       bool wake_enabled;
> +       bool suspended;
> +       int (*cmd_xfer)(struct cros_ec_device *ec,
> +                       struct cros_ec_command *msg);
> +       int (*pkt_xfer)(struct cros_ec_device *ec,
> +                       struct cros_ec_command *msg);
> +       struct mutex lock;
> +       bool mkbp_event_supported;
> +       bool host_sleep_v1;
> +       struct blocking_notifier_head event_notifier;
> +
> +       struct ec_response_get_next_event_v1 event_data;
> +       int event_size;
> +       u32 host_event_wake_mask;
> +
> +       /* The platform devices used by the mfd driver */
> +       struct platform_device *ec;
> +       struct platform_device *pd;
> +};
> +
> +/**
> + * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> + * @sensor_num: Id of the sensor, as reported by the EC.
> + */
> +struct cros_ec_sensor_platform {
> +       u8 sensor_num;
> +};
> +
> +/**
> + * struct cros_ec_platform - ChromeOS EC platform information.
> + * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> + *           used in /dev/ and sysfs.
> + * @cmd_offset: Offset to apply for each command. Set when
> + *              registering a device behind another one.
> + */
> +struct cros_ec_platform {
> +       const char *ec_name;
> +       u16 cmd_offset;
> +};
> +
> +/**
> + * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> + * @ec_dev: Device to suspend.
> + *
> + * This can be called by drivers to handle a suspend event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_suspend(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> + * @ec_dev: Device to resume.
> + *
> + * This can be called by drivers to handle a resume event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_resume(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> + * @ec_dev: Device to register.
> + * @msg: Message to write.
> + *
> + * This is intended to be used by all ChromeOS EC drivers, but at present
> + * only SPI uses it. Once LPC uses the same protocol it can start using it.
> + * I2C could use it now, with a refactor of the existing code.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> +                      struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_check_result() - Check ec_msg->result.
> + * @ec_dev: EC device.
> + * @msg: Message to check.
> + *
> + * This is used by ChromeOS EC drivers to check the ec_msg->result for
> + * errors and to warn about them.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_check_result(struct cros_ec_device *ec_dev,
> +                        struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * Call this to send a command to the ChromeOS EC.  This should be used
> + * instead of calling the EC's cmd_xfer() callback directly.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> +                    struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * This function is identical to cros_ec_cmd_xfer, except it returns success
> + * status only if both the command was transmitted successfully and the EC
> + * replied with success status. It's not necessary to check msg->result when
> + * using this function.
> + *
> + * Return: The number of bytes transferred on success or negative error code.
> + */
> +int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> +                           struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> + * @ec_dev: Device to register.
> + *
> + * Before calling this, allocate a pointer to a new device and then fill
> + * in all the fields up to the --private-- marker.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_register(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_unregister() - Remove a ChromeOS EC.
> + * @ec_dev: Device to unregister.
> + *
> + * Call this to deregister a ChromeOS EC, then clean up any private data.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_unregister(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_query_all() -  Query the protocol version supported by the
> + *         ChromeOS EC.
> + * @ec_dev: Device to register.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_query_all(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + * @wake_event: Pointer to a bool set to true upon return if the event might be
> + *              treated as a wake event. Ignored if null.
> + *
> + * Return: negative error code on errors; 0 for no data; or else number of
> + * bytes received (i.e., an event was retrieved successfully). Event types are
> + * written out to @ec_dev->event_data.event_type on success.
> + */
> +int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> +
> +/**
> + * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + *
> + * When MKBP is supported, when the EC raises an interrupt, we collect the
> + * events raised and call the functions in the ec notifier. This function
> + * is a helper to know which events are raised.
> + *
> + * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> + */
> +u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> +
> +#endif /* __LINUX_CROS_EC_PROTO_H */
> diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
> index 87830ed5ebf4..79bb4081d3c2 100644
> --- a/sound/soc/codecs/cros_ec_codec.c
> +++ b/sound/soc/codecs/cros_ec_codec.c
> @@ -9,9 +9,9 @@
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <sound/pcm.h>
>  #include <sound/pcm_params.h>
> --
> 2.20.1
>

Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Benjamin Tissoires]

On Tue, Jun 4, 2019 at 5:20 PM Enric Balletbo i Serra
<enric.balletbo@collabora.com> wrote:
>
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---

Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> # for the HID part

Cheers,
Benjamin

>
>  drivers/extcon/Kconfig                     |  2 +-
>  drivers/hid/Kconfig                        |  2 +-
>  drivers/i2c/busses/Kconfig                 |  2 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig |  2 +-
>  drivers/input/keyboard/Kconfig             |  2 +-
>  drivers/media/platform/Kconfig             |  3 +--
>  drivers/mfd/Kconfig                        | 14 +-------------
>  drivers/mfd/Makefile                       |  2 --
>  drivers/platform/chrome/Kconfig            | 21 +++++++++++++++++----
>  drivers/platform/chrome/Makefile           |  1 +
>  drivers/{mfd => platform/chrome}/cros_ec.c |  0
>  drivers/power/supply/Kconfig               |  2 +-
>  drivers/pwm/Kconfig                        |  2 +-
>  drivers/rtc/Kconfig                        |  2 +-
>  sound/soc/qcom/Kconfig                     |  2 +-
>  15 files changed, 29 insertions(+), 30 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (100%)
>
> diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
> index 6f5af4196b8d..0ebc599c5e51 100644
> --- a/drivers/extcon/Kconfig
> +++ b/drivers/extcon/Kconfig
> @@ -169,7 +169,7 @@ config EXTCON_USB_GPIO
>
>  config EXTCON_USBC_CROS_EC
>         tristate "ChromeOS Embedded Controller EXTCON support"
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         help
>           Say Y here to enable USB Type C cable detection extcon support when
>           using Chrome OS EC based USB Type-C ports.
> diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
> index 3872e03d9a59..a958b9625bba 100644
> --- a/drivers/hid/Kconfig
> +++ b/drivers/hid/Kconfig
> @@ -376,7 +376,7 @@ config HOLTEK_FF
>
>  config HID_GOOGLE_HAMMER
>         tristate "Google Hammer Keyboard"
> -       depends on USB_HID && LEDS_CLASS && MFD_CROS_EC
> +       depends on USB_HID && LEDS_CLASS && CROS_EC
>         ---help---
>         Say Y here if you have a Google Hammer device.
>
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index ee5dfb5aee2a..42a224d08ec7 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -1336,7 +1336,7 @@ config I2C_SIBYTE
>
>  config I2C_CROS_EC_TUNNEL
>         tristate "ChromeOS EC tunnel I2C bus"
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         help
>           If you say yes here you get an I2C bus that will tunnel i2c commands
>           through to the other side of the ChromeOS EC to the i2c bus
> diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig
> index f9bf7ff7fcaf..55999104cd44 100644
> --- a/drivers/iio/common/cros_ec_sensors/Kconfig
> +++ b/drivers/iio/common/cros_ec_sensors/Kconfig
> @@ -4,7 +4,7 @@
>  #
>  config IIO_CROS_EC_SENSORS_CORE
>         tristate "ChromeOS EC Sensors Core"
> -       depends on SYSFS && MFD_CROS_EC
> +       depends on SYSFS && CROS_EC
>         select IIO_BUFFER
>         select IIO_TRIGGERED_BUFFER
>         help
> diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
> index 7c4f19dab34f..64555cc8d83e 100644
> --- a/drivers/input/keyboard/Kconfig
> +++ b/drivers/input/keyboard/Kconfig
> @@ -729,7 +729,7 @@ config KEYBOARD_W90P910
>  config KEYBOARD_CROS_EC
>         tristate "ChromeOS EC keyboard"
>         select INPUT_MATRIXKMAP
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         help
>           Say Y here to enable the matrix keyboard used by ChromeOS devices
>           and implemented on the ChromeOS EC. You must enable one bus option
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index f2b5f27ebacb..adec7a0bfe1e 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -558,10 +558,9 @@ if CEC_PLATFORM_DRIVERS
>
>  config VIDEO_CROS_EC_CEC
>         tristate "ChromeOS EC CEC driver"
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         select CEC_CORE
>         select CEC_NOTIFIER
> -       select CHROME_PLATFORMS
>         select CROS_EC_PROTO
>         help
>           If you say yes here you will get support for the
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index a17d275bf1d4..ad0a5de74ef2 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -211,21 +211,9 @@ config MFD_AXP20X_RSB
>           components like regulators or the PEK (Power Enable Key) under the
>           corresponding menus.
>
> -config MFD_CROS_EC
> -       tristate "ChromeOS Embedded Controller"
> -       select MFD_CORE
> -       select CHROME_PLATFORMS
> -       select CROS_EC_PROTO
> -       depends on X86 || ARM || ARM64 || COMPILE_TEST
> -       help
> -         If you say Y here you get support for the ChromeOS Embedded
> -         Controller (EC) providing keyboard, battery and power services.
> -         You also need to enable the driver for the bus you are using. The
> -         protocol for talking to the EC is defined by the bus driver.
> -
>  config MFD_CROS_EC_CHARDEV
>         tristate "Chrome OS Embedded Controller userspace device interface"
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         ---help---
>           This driver adds support to talk with the ChromeOS EC from userspace.
>
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 52b1a90ff515..32327dc6bb45 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -13,8 +13,6 @@ obj-$(CONFIG_MFD_ASIC3)               += asic3.o tmio_core.o
>  obj-$(CONFIG_ARCH_BCM2835)     += bcm2835-pm.o
>  obj-$(CONFIG_MFD_BCM590XX)     += bcm590xx.o
>  obj-$(CONFIG_MFD_BD9571MWV)    += bd9571mwv.o
> -cros_ec_core-objs              := cros_ec.o
> -obj-$(CONFIG_MFD_CROS_EC)      += cros_ec_core.o
>  obj-$(CONFIG_MFD_CROS_EC_CHARDEV) += cros_ec_dev.o
>  obj-$(CONFIG_MFD_EXYNOS_LPASS) += exynos-lpass.o
>
> diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
> index 35bb5a2663f0..9417b982ad92 100644
> --- a/drivers/platform/chrome/Kconfig
> +++ b/drivers/platform/chrome/Kconfig
> @@ -50,9 +50,22 @@ config CHROMEOS_TBMC
>           To compile this driver as a module, choose M here: the
>           module will be called chromeos_tbmc.
>
> +config CROS_EC
> +       tristate "ChromeOS Embedded Controller"
> +       select CROS_EC_PROTO
> +       depends on X86 || ARM || ARM64 || COMPILE_TEST
> +       help
> +         If you say Y here you get support for the ChromeOS Embedded
> +         Controller (EC) providing keyboard, battery and power services.
> +         You also need to enable the driver for the bus you are using. The
> +         protocol for talking to the EC is defined by the bus driver.
> +
> +         To compile this driver as a module, choose M here: the
> +         module will be called cros_ec.
> +
>  config CROS_EC_I2C
>         tristate "ChromeOS Embedded Controller (I2C)"
> -       depends on MFD_CROS_EC && I2C
> +       depends on CROS_EC && I2C
>
>         help
>           If you say Y here, you get support for talking to the ChromeOS
> @@ -62,7 +75,7 @@ config CROS_EC_I2C
>
>  config CROS_EC_RPMSG
>         tristate "ChromeOS Embedded Controller (rpmsg)"
> -       depends on MFD_CROS_EC && RPMSG && OF
> +       depends on CROS_EC && RPMSG && OF
>         help
>           If you say Y here, you get support for talking to the ChromeOS EC
>           through rpmsg. This uses a simple byte-level protocol with a
> @@ -87,7 +100,7 @@ config CROS_EC_ISHTP
>
>  config CROS_EC_SPI
>         tristate "ChromeOS Embedded Controller (SPI)"
> -       depends on MFD_CROS_EC && SPI
> +       depends on CROS_EC && SPI
>
>         ---help---
>           If you say Y here, you get support for talking to the ChromeOS EC
> @@ -97,7 +110,7 @@ config CROS_EC_SPI
>
>  config CROS_EC_LPC
>          tristate "ChromeOS Embedded Controller (LPC)"
> -        depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
> +        depends on CROS_EC && ACPI && (X86 || COMPILE_TEST)
>          help
>            If you say Y here, you get support for talking to the ChromeOS EC
>            over an LPC bus. This uses a simple byte-level protocol with a
> diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
> index c5583c48d1e5..ebb57e21923b 100644
> --- a/drivers/platform/chrome/Makefile
> +++ b/drivers/platform/chrome/Makefile
> @@ -6,6 +6,7 @@ CFLAGS_cros_ec_trace.o:=                -I$(src)
>  obj-$(CONFIG_CHROMEOS_LAPTOP)          += chromeos_laptop.o
>  obj-$(CONFIG_CHROMEOS_PSTORE)          += chromeos_pstore.o
>  obj-$(CONFIG_CHROMEOS_TBMC)            += chromeos_tbmc.o
> +obj-$(CONFIG_CROS_EC)                  += cros_ec.o
>  obj-$(CONFIG_CROS_EC_I2C)              += cros_ec_i2c.o
>  obj-$(CONFIG_CROS_EC_ISHTP)            += cros_ec_ishtp.o
>  obj-$(CONFIG_CROS_EC_RPMSG)            += cros_ec_rpmsg.o
> diff --git a/drivers/mfd/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> similarity index 100%
> rename from drivers/mfd/cros_ec.c
> rename to drivers/platform/chrome/cros_ec.c
> diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
> index dd7da41f230c..e05140771845 100644
> --- a/drivers/power/supply/Kconfig
> +++ b/drivers/power/supply/Kconfig
> @@ -656,7 +656,7 @@ config CHARGER_RT9455
>
>  config CHARGER_CROS_USBPD
>         tristate "ChromeOS EC based USBPD charger"
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         default n
>         help
>           Say Y here to enable ChromeOS EC based USBPD charger
> diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
> index dff5a93f7daa..99946e1bcc73 100644
> --- a/drivers/pwm/Kconfig
> +++ b/drivers/pwm/Kconfig
> @@ -145,7 +145,7 @@ config PWM_CRC
>
>  config PWM_CROS_EC
>         tristate "ChromeOS EC PWM driver"
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         help
>           PWM driver for exposing a PWM attached to the ChromeOS Embedded
>           Controller.
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index 5c0790eed656..4eb311569fc4 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -1265,7 +1265,7 @@ config RTC_DRV_ZYNQMP
>
>  config RTC_DRV_CROS_EC
>         tristate "Chrome OS EC RTC driver"
> -       depends on MFD_CROS_EC
> +       depends on CROS_EC
>         help
>           If you say yes here you will get support for the
>           Chrome OS Embedded Controller's RTC.
> diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
> index 8e3e86619b35..60086858e920 100644
> --- a/sound/soc/qcom/Kconfig
> +++ b/sound/soc/qcom/Kconfig
> @@ -99,7 +99,7 @@ config SND_SOC_MSM8996
>
>  config SND_SOC_SDM845
>         tristate "SoC Machine driver for SDM845 boards"
> -       depends on QCOM_APR && MFD_CROS_EC && I2C
> +       depends on QCOM_APR && CROS_EC && I2C
>         select SND_SOC_QDSP6
>         select SND_SOC_QCOM_COMMON
>         select SND_SOC_RT5663
> --
> 2.20.1
>

Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Dmitry Torokhov]

On Tue, Jun 04, 2019 at 05:20:11PM +0200, Enric Balletbo i Serra wrote:
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input

Thanks.

-- 
Dmitry

Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Dmitry Torokhov]

On Tue, Jun 04, 2019 at 05:20:15PM +0200, Enric Balletbo i Serra wrote:
> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
> we have a linux/mfd/cros_ec_commands.h file that is non related to the
> multifunction device (in the sense that is not exporting any function of
> the mfd device). This causes crossed includes between mfd and
> platform/chrome subsystems and makes the code difficult to read, apart
> from creating 'curious' situations where a platform/chrome driver includes
> a linux/mfd/cros_ec.h file just to get the exported functions that are
> implemented in another platform/chrome driver.
> 
> In order to have a better separation on what the cros-ec multifunction
> driver does and what the cros-ec core provides move and rework the
> affected includes doing:
> 
>  - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
>  - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
>    driver from include/linux/mfd/cros_ec.h to a new file
>    include/linux/platform_data/cros_ec_proto.h
>  - Update all the drivers with the new includes, so
>    - Drivers that only need to know about the protocol include
>      - linux/platform_data/cros_ec_proto.h
>      - linux/platform_data/cros_ec_commands.h
>    - Drivers that need to know about the cros-ec mfd device also include
>      - linux/mfd/cros_ec.h
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input

Thanks.

-- 
Dmitry

Re: [PATCH 02/10] mfd / platform: cros_ec: Move cros-ec core driver out from MFD

[Sebastian Reichel]

[-- Attachment #1.1: Type: text/plain, Size: 10857 bytes --]

Hi,

On Tue, Jun 04, 2019 at 05:20:11PM +0200, Enric Balletbo i Serra wrote:
> Now, the ChromeOS EC core driver has nothing related to an MFD device, so
> move that driver from the MFD subsystem to the platform/chrome subsystem.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>

-- Sebastian

>  drivers/extcon/Kconfig                     |  2 +-
>  drivers/hid/Kconfig                        |  2 +-
>  drivers/i2c/busses/Kconfig                 |  2 +-
>  drivers/iio/common/cros_ec_sensors/Kconfig |  2 +-
>  drivers/input/keyboard/Kconfig             |  2 +-
>  drivers/media/platform/Kconfig             |  3 +--
>  drivers/mfd/Kconfig                        | 14 +-------------
>  drivers/mfd/Makefile                       |  2 --
>  drivers/platform/chrome/Kconfig            | 21 +++++++++++++++++----
>  drivers/platform/chrome/Makefile           |  1 +
>  drivers/{mfd => platform/chrome}/cros_ec.c |  0
>  drivers/power/supply/Kconfig               |  2 +-
>  drivers/pwm/Kconfig                        |  2 +-
>  drivers/rtc/Kconfig                        |  2 +-
>  sound/soc/qcom/Kconfig                     |  2 +-
>  15 files changed, 29 insertions(+), 30 deletions(-)
>  rename drivers/{mfd => platform/chrome}/cros_ec.c (100%)
> 
> diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
> index 6f5af4196b8d..0ebc599c5e51 100644
> --- a/drivers/extcon/Kconfig
> +++ b/drivers/extcon/Kconfig
> @@ -169,7 +169,7 @@ config EXTCON_USB_GPIO
>  
>  config EXTCON_USBC_CROS_EC
>  	tristate "ChromeOS Embedded Controller EXTCON support"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  Say Y here to enable USB Type C cable detection extcon support when
>  	  using Chrome OS EC based USB Type-C ports.
> diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
> index 3872e03d9a59..a958b9625bba 100644
> --- a/drivers/hid/Kconfig
> +++ b/drivers/hid/Kconfig
> @@ -376,7 +376,7 @@ config HOLTEK_FF
>  
>  config HID_GOOGLE_HAMMER
>  	tristate "Google Hammer Keyboard"
> -	depends on USB_HID && LEDS_CLASS && MFD_CROS_EC
> +	depends on USB_HID && LEDS_CLASS && CROS_EC
>  	---help---
>  	Say Y here if you have a Google Hammer device.
>  
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index ee5dfb5aee2a..42a224d08ec7 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -1336,7 +1336,7 @@ config I2C_SIBYTE
>  
>  config I2C_CROS_EC_TUNNEL
>  	tristate "ChromeOS EC tunnel I2C bus"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  If you say yes here you get an I2C bus that will tunnel i2c commands
>  	  through to the other side of the ChromeOS EC to the i2c bus
> diff --git a/drivers/iio/common/cros_ec_sensors/Kconfig b/drivers/iio/common/cros_ec_sensors/Kconfig
> index f9bf7ff7fcaf..55999104cd44 100644
> --- a/drivers/iio/common/cros_ec_sensors/Kconfig
> +++ b/drivers/iio/common/cros_ec_sensors/Kconfig
> @@ -4,7 +4,7 @@
>  #
>  config IIO_CROS_EC_SENSORS_CORE
>  	tristate "ChromeOS EC Sensors Core"
> -	depends on SYSFS && MFD_CROS_EC
> +	depends on SYSFS && CROS_EC
>  	select IIO_BUFFER
>  	select IIO_TRIGGERED_BUFFER
>  	help
> diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
> index 7c4f19dab34f..64555cc8d83e 100644
> --- a/drivers/input/keyboard/Kconfig
> +++ b/drivers/input/keyboard/Kconfig
> @@ -729,7 +729,7 @@ config KEYBOARD_W90P910
>  config KEYBOARD_CROS_EC
>  	tristate "ChromeOS EC keyboard"
>  	select INPUT_MATRIXKMAP
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  Say Y here to enable the matrix keyboard used by ChromeOS devices
>  	  and implemented on the ChromeOS EC. You must enable one bus option
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index f2b5f27ebacb..adec7a0bfe1e 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -558,10 +558,9 @@ if CEC_PLATFORM_DRIVERS
>  
>  config VIDEO_CROS_EC_CEC
>  	tristate "ChromeOS EC CEC driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	select CEC_CORE
>  	select CEC_NOTIFIER
> -	select CHROME_PLATFORMS
>  	select CROS_EC_PROTO
>  	help
>  	  If you say yes here you will get support for the
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index a17d275bf1d4..ad0a5de74ef2 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -211,21 +211,9 @@ config MFD_AXP20X_RSB
>  	  components like regulators or the PEK (Power Enable Key) under the
>  	  corresponding menus.
>  
> -config MFD_CROS_EC
> -	tristate "ChromeOS Embedded Controller"
> -	select MFD_CORE
> -	select CHROME_PLATFORMS
> -	select CROS_EC_PROTO
> -	depends on X86 || ARM || ARM64 || COMPILE_TEST
> -	help
> -	  If you say Y here you get support for the ChromeOS Embedded
> -	  Controller (EC) providing keyboard, battery and power services.
> -	  You also need to enable the driver for the bus you are using. The
> -	  protocol for talking to the EC is defined by the bus driver.
> -
>  config MFD_CROS_EC_CHARDEV
>  	tristate "Chrome OS Embedded Controller userspace device interface"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	---help---
>  	  This driver adds support to talk with the ChromeOS EC from userspace.
>  
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 52b1a90ff515..32327dc6bb45 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -13,8 +13,6 @@ obj-$(CONFIG_MFD_ASIC3)		+= asic3.o tmio_core.o
>  obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835-pm.o
>  obj-$(CONFIG_MFD_BCM590XX)	+= bcm590xx.o
>  obj-$(CONFIG_MFD_BD9571MWV)	+= bd9571mwv.o
> -cros_ec_core-objs		:= cros_ec.o
> -obj-$(CONFIG_MFD_CROS_EC)	+= cros_ec_core.o
>  obj-$(CONFIG_MFD_CROS_EC_CHARDEV) += cros_ec_dev.o
>  obj-$(CONFIG_MFD_EXYNOS_LPASS)	+= exynos-lpass.o
>  
> diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
> index 35bb5a2663f0..9417b982ad92 100644
> --- a/drivers/platform/chrome/Kconfig
> +++ b/drivers/platform/chrome/Kconfig
> @@ -50,9 +50,22 @@ config CHROMEOS_TBMC
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called chromeos_tbmc.
>  
> +config CROS_EC
> +	tristate "ChromeOS Embedded Controller"
> +	select CROS_EC_PROTO
> +	depends on X86 || ARM || ARM64 || COMPILE_TEST
> +	help
> +	  If you say Y here you get support for the ChromeOS Embedded
> +	  Controller (EC) providing keyboard, battery and power services.
> +	  You also need to enable the driver for the bus you are using. The
> +	  protocol for talking to the EC is defined by the bus driver.
> +
> +	  To compile this driver as a module, choose M here: the
> +	  module will be called cros_ec.
> +
>  config CROS_EC_I2C
>  	tristate "ChromeOS Embedded Controller (I2C)"
> -	depends on MFD_CROS_EC && I2C
> +	depends on CROS_EC && I2C
>  
>  	help
>  	  If you say Y here, you get support for talking to the ChromeOS
> @@ -62,7 +75,7 @@ config CROS_EC_I2C
>  
>  config CROS_EC_RPMSG
>  	tristate "ChromeOS Embedded Controller (rpmsg)"
> -	depends on MFD_CROS_EC && RPMSG && OF
> +	depends on CROS_EC && RPMSG && OF
>  	help
>  	  If you say Y here, you get support for talking to the ChromeOS EC
>  	  through rpmsg. This uses a simple byte-level protocol with a
> @@ -87,7 +100,7 @@ config CROS_EC_ISHTP
>  
>  config CROS_EC_SPI
>  	tristate "ChromeOS Embedded Controller (SPI)"
> -	depends on MFD_CROS_EC && SPI
> +	depends on CROS_EC && SPI
>  
>  	---help---
>  	  If you say Y here, you get support for talking to the ChromeOS EC
> @@ -97,7 +110,7 @@ config CROS_EC_SPI
>  
>  config CROS_EC_LPC
>          tristate "ChromeOS Embedded Controller (LPC)"
> -        depends on MFD_CROS_EC && ACPI && (X86 || COMPILE_TEST)
> +        depends on CROS_EC && ACPI && (X86 || COMPILE_TEST)
>          help
>            If you say Y here, you get support for talking to the ChromeOS EC
>            over an LPC bus. This uses a simple byte-level protocol with a
> diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
> index c5583c48d1e5..ebb57e21923b 100644
> --- a/drivers/platform/chrome/Makefile
> +++ b/drivers/platform/chrome/Makefile
> @@ -6,6 +6,7 @@ CFLAGS_cros_ec_trace.o:=		-I$(src)
>  obj-$(CONFIG_CHROMEOS_LAPTOP)		+= chromeos_laptop.o
>  obj-$(CONFIG_CHROMEOS_PSTORE)		+= chromeos_pstore.o
>  obj-$(CONFIG_CHROMEOS_TBMC)		+= chromeos_tbmc.o
> +obj-$(CONFIG_CROS_EC)			+= cros_ec.o
>  obj-$(CONFIG_CROS_EC_I2C)		+= cros_ec_i2c.o
>  obj-$(CONFIG_CROS_EC_ISHTP)		+= cros_ec_ishtp.o
>  obj-$(CONFIG_CROS_EC_RPMSG)		+= cros_ec_rpmsg.o
> diff --git a/drivers/mfd/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> similarity index 100%
> rename from drivers/mfd/cros_ec.c
> rename to drivers/platform/chrome/cros_ec.c
> diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
> index dd7da41f230c..e05140771845 100644
> --- a/drivers/power/supply/Kconfig
> +++ b/drivers/power/supply/Kconfig
> @@ -656,7 +656,7 @@ config CHARGER_RT9455
>  
>  config CHARGER_CROS_USBPD
>  	tristate "ChromeOS EC based USBPD charger"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	default n
>  	help
>  	  Say Y here to enable ChromeOS EC based USBPD charger
> diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
> index dff5a93f7daa..99946e1bcc73 100644
> --- a/drivers/pwm/Kconfig
> +++ b/drivers/pwm/Kconfig
> @@ -145,7 +145,7 @@ config PWM_CRC
>  
>  config PWM_CROS_EC
>  	tristate "ChromeOS EC PWM driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  PWM driver for exposing a PWM attached to the ChromeOS Embedded
>  	  Controller.
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index 5c0790eed656..4eb311569fc4 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -1265,7 +1265,7 @@ config RTC_DRV_ZYNQMP
>  
>  config RTC_DRV_CROS_EC
>  	tristate "Chrome OS EC RTC driver"
> -	depends on MFD_CROS_EC
> +	depends on CROS_EC
>  	help
>  	  If you say yes here you will get support for the
>  	  Chrome OS Embedded Controller's RTC.
> diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
> index 8e3e86619b35..60086858e920 100644
> --- a/sound/soc/qcom/Kconfig
> +++ b/sound/soc/qcom/Kconfig
> @@ -99,7 +99,7 @@ config SND_SOC_MSM8996
>  
>  config SND_SOC_SDM845
>  	tristate "SoC Machine driver for SDM845 boards"
> -	depends on QCOM_APR && MFD_CROS_EC && I2C
> +	depends on QCOM_APR && CROS_EC && I2C
>  	select SND_SOC_QDSP6
>  	select SND_SOC_QCOM_COMMON
>  	select SND_SOC_RT5663
> -- 
> 2.20.1
> 

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Re: [PATCH 06/10] mfd / platform: cros_ec: Reorganize platform and mfd includes

[Sebastian Reichel]

[-- Attachment #1: Type: text/plain, Size: 48544 bytes --]

Hi,

On Tue, Jun 04, 2019 at 05:20:15PM +0200, Enric Balletbo i Serra wrote:
> There is a bit of mess between cros-ec mfd includes and platform
> includes. For example, we have a linux/mfd/cros_ec.h include that
> exports the interface implemented in platform/chrome/cros_ec_proto.c. Or
> we have a linux/mfd/cros_ec_commands.h file that is non related to the
> multifunction device (in the sense that is not exporting any function of
> the mfd device). This causes crossed includes between mfd and
> platform/chrome subsystems and makes the code difficult to read, apart
> from creating 'curious' situations where a platform/chrome driver includes
> a linux/mfd/cros_ec.h file just to get the exported functions that are
> implemented in another platform/chrome driver.
> 
> In order to have a better separation on what the cros-ec multifunction
> driver does and what the cros-ec core provides move and rework the
> affected includes doing:
> 
>  - Move cros_ec_commands.h to include/linux/platform_data/cros_ec_commands.h
>  - Get rid of the parts that are implemented in the platform/chrome/cros_ec_proto.c
>    driver from include/linux/mfd/cros_ec.h to a new file
>    include/linux/platform_data/cros_ec_proto.h
>  - Update all the drivers with the new includes, so
>    - Drivers that only need to know about the protocol include
>      - linux/platform_data/cros_ec_proto.h
>      - linux/platform_data/cros_ec_commands.h
>    - Drivers that need to know about the cros-ec mfd device also include
>      - linux/mfd/cros_ec.h
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---

Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>

-- Sebastian

>  drivers/extcon/extcon-usbc-cros-ec.c          |   3 +-
>  drivers/hid/hid-google-hammer.c               |   4 +-
>  drivers/i2c/busses/i2c-cros-ec-tunnel.c       |   4 +-
>  drivers/iio/accel/cros_ec_accel_legacy.c      |   3 +-
>  .../common/cros_ec_sensors/cros_ec_sensors.c  |   3 +-
>  .../cros_ec_sensors/cros_ec_sensors_core.c    |   3 +-
>  drivers/iio/light/cros_ec_light_prox.c        |   3 +-
>  drivers/iio/pressure/cros_ec_baro.c           |   3 +-
>  drivers/input/keyboard/cros_ec_keyb.c         |   4 +-
>  .../media/platform/cros-ec-cec/cros-ec-cec.c  |   4 +-
>  drivers/mfd/cros_ec_dev.c                     |   3 +-
>  drivers/platform/chrome/cros_ec.c             |   3 +-
>  drivers/platform/chrome/cros_ec_chardev.c     |   4 +-
>  drivers/platform/chrome/cros_ec_debugfs.c     |   3 +-
>  drivers/platform/chrome/cros_ec_i2c.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lightbar.c    |   3 +-
>  drivers/platform/chrome/cros_ec_lpc.c         |   4 +-
>  drivers/platform/chrome/cros_ec_lpc_reg.c     |   4 +-
>  drivers/platform/chrome/cros_ec_proto.c       |   3 +-
>  drivers/platform/chrome/cros_ec_rpmsg.c       |   4 +-
>  drivers/platform/chrome/cros_ec_spi.c         |   4 +-
>  drivers/platform/chrome/cros_ec_sysfs.c       |   3 +-
>  drivers/platform/chrome/cros_ec_trace.c       |   2 +-
>  drivers/platform/chrome/cros_ec_trace.h       |   4 +-
>  drivers/platform/chrome/cros_ec_vbc.c         |   3 +-
>  drivers/platform/chrome/cros_usbpd_logger.c   |   5 +-
>  drivers/power/supply/cros_usbpd-charger.c     |   5 +-
>  drivers/pwm/pwm-cros-ec.c                     |   4 +-
>  drivers/rtc/rtc-cros-ec.c                     |   3 +-
>  .../linux/iio/common/cros_ec_sensors_core.h   |   3 +-
>  include/linux/mfd/cros_ec.h                   | 306 -----------------
>  .../{mfd => platform_data}/cros_ec_commands.h |   0
>  include/linux/platform_data/cros_ec_proto.h   | 315 ++++++++++++++++++
>  sound/soc/codecs/cros_ec_codec.c              |   4 +-
>  34 files changed, 379 insertions(+), 351 deletions(-)
>  rename include/linux/{mfd => platform_data}/cros_ec_commands.h (100%)
>  create mode 100644 include/linux/platform_data/cros_ec_proto.h
> 
> diff --git a/drivers/extcon/extcon-usbc-cros-ec.c b/drivers/extcon/extcon-usbc-cros-ec.c
> index 43c0a936ab82..5290cc2d19d9 100644
> --- a/drivers/extcon/extcon-usbc-cros-ec.c
> +++ b/drivers/extcon/extcon-usbc-cros-ec.c
> @@ -6,10 +6,11 @@
>  
>  #include <linux/extcon-provider.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/module.h>
>  #include <linux/notifier.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/sched.h>
> diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c
> index ee5e0bdcf078..84f8c127ebdc 100644
> --- a/drivers/hid/hid-google-hammer.c
> +++ b/drivers/hid/hid-google-hammer.c
> @@ -16,9 +16,9 @@
>  #include <linux/acpi.h>
>  #include <linux/hid.h>
>  #include <linux/leds.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pm_wakeup.h>
>  #include <asm/unaligned.h>
> diff --git a/drivers/i2c/busses/i2c-cros-ec-tunnel.c b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> index 82bcd9a78759..c551aa96a2e3 100644
> --- a/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> +++ b/drivers/i2c/busses/i2c-cros-ec-tunnel.c
> @@ -5,8 +5,8 @@
>  
>  #include <linux/module.h>
>  #include <linux/i2c.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
> index 46bb2e421bb9..fd9a634f741e 100644
> --- a/drivers/iio/accel/cros_ec_accel_legacy.c
> +++ b/drivers/iio/accel/cros_ec_accel_legacy.c
> @@ -18,9 +18,10 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  #define DRV_NAME	"cros-ec-accel-legacy"
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> index 17af4e0fd5f8..40dc24ff0ee5 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
> @@ -17,8 +17,9 @@
>  #include <linux/iio/triggered_buffer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> index 719a0df5aeeb..fd63315399ac 100644
> --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
> @@ -14,9 +14,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  static char *cros_ec_loc[] = {
> diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
> index 308ee6ff2e22..437e0eae9178 100644
> --- a/drivers/iio/light/cros_ec_light_prox.c
> +++ b/drivers/iio/light/cros_ec_light_prox.c
> @@ -15,8 +15,9 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
> index 034ce98d6e97..956dc01f1295 100644
> --- a/drivers/iio/pressure/cros_ec_baro.c
> +++ b/drivers/iio/pressure/cros_ec_baro.c
> @@ -15,9 +15,10 @@
>  #include <linux/iio/trigger_consumer.h>
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/slab.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  
>  /*
> diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
> index d56001181598..2b71c5a51f90 100644
> --- a/drivers/input/keyboard/cros_ec_keyb.c
> +++ b/drivers/input/keyboard/cros_ec_keyb.c
> @@ -22,8 +22,8 @@
>  #include <linux/slab.h>
>  #include <linux/sysrq.h>
>  #include <linux/input/matrix_keypad.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> index 068df9888dbf..2e4e263a4a94 100644
> --- a/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> +++ b/drivers/media/platform/cros-ec-cec/cros-ec-cec.c
> @@ -16,8 +16,8 @@
>  #include <linux/interrupt.h>
>  #include <media/cec.h>
>  #include <media/cec-notifier.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #define DRV_NAME	"cros-ec-cec"
>  
> diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c
> index c7a5dfa36874..5481df4e1216 100644
> --- a/drivers/mfd/cros_ec_dev.c
> +++ b/drivers/mfd/cros_ec_dev.c
> @@ -7,11 +7,12 @@
>  
>  #include <linux/mfd/core.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mod_devicetable.h>
>  #include <linux/of_platform.h>
>  #include <linux/platform_device.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  
>  #define DRV_NAME "cros-ec-dev"
> diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
> index 11fced7917fc..9800597ccd96 100644
> --- a/drivers/platform/chrome/cros_ec.c
> +++ b/drivers/platform/chrome/cros_ec.c
> @@ -21,7 +21,8 @@
>  #include <linux/interrupt.h>
>  #include <linux/slab.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/suspend.h>
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_chardev.c b/drivers/platform/chrome/cros_ec_chardev.c
> index 1a0a27080026..786b941a60df 100644
> --- a/drivers/platform/chrome/cros_ec_chardev.c
> +++ b/drivers/platform/chrome/cros_ec_chardev.c
> @@ -9,10 +9,10 @@
>  #include <linux/device.h>
>  #include <linux/fs.h>
>  #include <linux/list.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/miscdevice.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spinlock.h>
> diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c
> index 4c2a27f6a6d0..b088d91be9c9 100644
> --- a/drivers/platform/chrome/cros_ec_debugfs.c
> +++ b/drivers/platform/chrome/cros_ec_debugfs.c
> @@ -8,9 +8,10 @@
>  #include <linux/delay.h>
>  #include <linux/fs.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
>  #include <linux/mutex.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/poll.h>
>  #include <linux/sched.h>
> diff --git a/drivers/platform/chrome/cros_ec_i2c.c b/drivers/platform/chrome/cros_ec_i2c.c
> index 6bb82dfa7dae..9bd97bc8454b 100644
> --- a/drivers/platform/chrome/cros_ec_i2c.c
> +++ b/drivers/platform/chrome/cros_ec_i2c.c
> @@ -9,8 +9,8 @@
>  #include <linux/module.h>
>  #include <linux/i2c.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_lightbar.c b/drivers/platform/chrome/cros_ec_lightbar.c
> index d30a6650b0b5..caa26da2c788 100644
> --- a/drivers/platform/chrome/cros_ec_lightbar.c
> +++ b/drivers/platform/chrome/cros_ec_lightbar.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/sched.h>
>  #include <linux/types.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
> index 2c7e654cf89c..0c976e95998a 100644
> --- a/drivers/platform/chrome/cros_ec_lpc.c
> +++ b/drivers/platform/chrome/cros_ec_lpc.c
> @@ -16,9 +16,9 @@
>  #include <linux/delay.h>
>  #include <linux/io.h>
>  #include <linux/interrupt.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/suspend.h>
> diff --git a/drivers/platform/chrome/cros_ec_lpc_reg.c b/drivers/platform/chrome/cros_ec_lpc_reg.c
> index 0f5cd0ac8b49..dec9a779e209 100644
> --- a/drivers/platform/chrome/cros_ec_lpc_reg.c
> +++ b/drivers/platform/chrome/cros_ec_lpc_reg.c
> @@ -4,8 +4,8 @@
>  // Copyright (C) 2016 Google, Inc
>  
>  #include <linux/io.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include "cros_ec_lpc_mec.h"
>  
> diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c
> index 3d2325197a68..f659f96bda12 100644
> --- a/drivers/platform/chrome/cros_ec_proto.c
> +++ b/drivers/platform/chrome/cros_ec_proto.c
> @@ -3,10 +3,11 @@
>  //
>  // Copyright (C) 2015 Google, Inc
>  
> -#include <linux/mfd/cros_ec.h>
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  #include <asm/unaligned.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_rpmsg.c b/drivers/platform/chrome/cros_ec_rpmsg.c
> index 520e507bfa54..9633e5417686 100644
> --- a/drivers/platform/chrome/cros_ec_rpmsg.c
> +++ b/drivers/platform/chrome/cros_ec_rpmsg.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rpmsg.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_spi.c b/drivers/platform/chrome/cros_ec_spi.c
> index 2e21f2776063..9006e1872942 100644
> --- a/drivers/platform/chrome/cros_ec_spi.c
> +++ b/drivers/platform/chrome/cros_ec_spi.c
> @@ -6,9 +6,9 @@
>  #include <linux/delay.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/of.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/slab.h>
>  #include <linux/spi/spi.h>
> diff --git a/drivers/platform/chrome/cros_ec_sysfs.c b/drivers/platform/chrome/cros_ec_sysfs.c
> index fe0b7614ae1b..0caeb8d0989d 100644
> --- a/drivers/platform/chrome/cros_ec_sysfs.c
> +++ b/drivers/platform/chrome/cros_ec_sysfs.c
> @@ -9,8 +9,9 @@
>  #include <linux/fs.h>
>  #include <linux/kobject.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/printk.h>
>  #include <linux/slab.h>
> diff --git a/drivers/platform/chrome/cros_ec_trace.c b/drivers/platform/chrome/cros_ec_trace.c
> index 0a76412095a9..6f80ff4532ae 100644
> --- a/drivers/platform/chrome/cros_ec_trace.c
> +++ b/drivers/platform/chrome/cros_ec_trace.c
> @@ -6,7 +6,7 @@
>  #define TRACE_SYMBOL(a) {a, #a}
>  
>  // Generate the list using the following script:
> -// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/mfd/cros_ec_commands.h
> +// sed -n 's/^#define \(EC_CMD_[[:alnum:]_]*\)\s.*/\tTRACE_SYMBOL(\1), \\/p' include/linux/platform_data/cros_ec_commands.h
>  #define EC_CMDS \
>  	TRACE_SYMBOL(EC_CMD_PROTO_VERSION), \
>  	TRACE_SYMBOL(EC_CMD_HELLO), \
> diff --git a/drivers/platform/chrome/cros_ec_trace.h b/drivers/platform/chrome/cros_ec_trace.h
> index 7ae3b89c78b9..0dd4df30fa89 100644
> --- a/drivers/platform/chrome/cros_ec_trace.h
> +++ b/drivers/platform/chrome/cros_ec_trace.h
> @@ -11,8 +11,10 @@
>  #if !defined(_CROS_EC_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
>  #define _CROS_EC_TRACE_H_
>  
> +#include <linux/bits.h>
>  #include <linux/types.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  #include <linux/tracepoint.h>
>  
> diff --git a/drivers/platform/chrome/cros_ec_vbc.c b/drivers/platform/chrome/cros_ec_vbc.c
> index 8392a1ec33a7..cffe119e7a7a 100644
> --- a/drivers/platform/chrome/cros_ec_vbc.c
> +++ b/drivers/platform/chrome/cros_ec_vbc.c
> @@ -7,8 +7,9 @@
>  #include <linux/of.h>
>  #include <linux/platform_device.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/slab.h>
>  
>  #define DRV_NAME "cros-ec-vbc"
> diff --git a/drivers/platform/chrome/cros_usbpd_logger.c b/drivers/platform/chrome/cros_usbpd_logger.c
> index 7c7b267626a0..c549a9b49b56 100644
> --- a/drivers/platform/chrome/cros_usbpd_logger.c
> +++ b/drivers/platform/chrome/cros_usbpd_logger.c
> @@ -6,10 +6,11 @@
>   */
>  
>  #include <linux/ktime.h>
> -#include <linux/math64.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/math64.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  
> diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
> index 3a9ea94c3de3..6cc7c3910e09 100644
> --- a/drivers/power/supply/cros_usbpd-charger.c
> +++ b/drivers/power/supply/cros_usbpd-charger.c
> @@ -5,9 +5,10 @@
>   * Copyright (c) 2014 - 2018 Google, Inc
>   */
>  
> -#include <linux/module.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/power_supply.h>
>  #include <linux/slab.h>
> diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
> index 98f6ac6cf6ab..85bea2d40b7d 100644
> --- a/drivers/pwm/pwm-cros-ec.c
> +++ b/drivers/pwm/pwm-cros-ec.c
> @@ -6,8 +6,8 @@
>   */
>  
>  #include <linux/module.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/pwm.h>
>  #include <linux/slab.h>
> diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c
> index 4d6bf9304ceb..6909e01936d9 100644
> --- a/drivers/rtc/rtc-cros-ec.c
> +++ b/drivers/rtc/rtc-cros-ec.c
> @@ -6,8 +6,9 @@
>  
>  #include <linux/kernel.h>
>  #include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  #include <linux/slab.h>
> diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
> index ce16445411ac..8a91669f5bed 100644
> --- a/include/linux/iio/common/cros_ec_sensors_core.h
> +++ b/include/linux/iio/common/cros_ec_sensors_core.h
> @@ -18,7 +18,8 @@
>  
>  #include <linux/iio/iio.h>
>  #include <linux/irqreturn.h>
> -#include <linux/mfd/cros_ec.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  
>  enum {
>  	CROS_EC_SENSOR_X,
> diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
> index 2a1372d167b9..e0bae49535e1 100644
> --- a/include/linux/mfd/cros_ec.h
> +++ b/include/linux/mfd/cros_ec.h
> @@ -16,184 +16,7 @@
>  #ifndef __LINUX_MFD_CROS_EC_H
>  #define __LINUX_MFD_CROS_EC_H
>  
> -#include <linux/cdev.h>
>  #include <linux/device.h>
> -#include <linux/notifier.h>
> -#include <linux/mfd/cros_ec_commands.h>
> -#include <linux/mutex.h>
> -
> -#define CROS_EC_DEV_NAME "cros_ec"
> -#define CROS_EC_DEV_FP_NAME "cros_fp"
> -#define CROS_EC_DEV_PD_NAME "cros_pd"
> -#define CROS_EC_DEV_TP_NAME "cros_tp"
> -#define CROS_EC_DEV_ISH_NAME "cros_ish"
> -
> -/*
> - * The EC is unresponsive for a time after a reboot command.  Add a
> - * simple delay to make sure that the bus stays locked.
> - */
> -#define EC_REBOOT_DELAY_MS             50
> -
> -/*
> - * Max bus-specific overhead incurred by request/responses.
> - * I2C requires 1 additional byte for requests.
> - * I2C requires 2 additional bytes for responses.
> - * SPI requires up to 32 additional bytes for responses.
> - */
> -#define EC_PROTO_VERSION_UNKNOWN	0
> -#define EC_MAX_REQUEST_OVERHEAD		1
> -#define EC_MAX_RESPONSE_OVERHEAD	32
> -
> -/*
> - * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> - */
> -enum {
> -	EC_MSG_TX_HEADER_BYTES	= 3,
> -	EC_MSG_TX_TRAILER_BYTES	= 1,
> -	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
> -					EC_MSG_TX_TRAILER_BYTES,
> -	EC_MSG_RX_PROTO_BYTES	= 3,
> -
> -	/* Max length of messages for proto 2*/
> -	EC_PROTO2_MSG_BYTES		= EC_PROTO2_MAX_PARAM_SIZE +
> -					EC_MSG_TX_PROTO_BYTES,
> -
> -	EC_MAX_MSG_BYTES		= 64 * 1024,
> -};
> -
> -/**
> - * struct cros_ec_command - Information about a ChromeOS EC command.
> - * @version: Command version number (often 0).
> - * @command: Command to send (EC_CMD_...).
> - * @outsize: Outgoing length in bytes.
> - * @insize: Max number of bytes to accept from the EC.
> - * @result: EC's response to the command (separate from communication failure).
> - * @data: Where to put the incoming data from EC and outgoing data to EC.
> - */
> -struct cros_ec_command {
> -	uint32_t version;
> -	uint32_t command;
> -	uint32_t outsize;
> -	uint32_t insize;
> -	uint32_t result;
> -	uint8_t data[0];
> -};
> -
> -/**
> - * struct cros_ec_device - Information about a ChromeOS EC device.
> - * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> - * @dev: Device pointer for physical comms device
> - * @was_wake_device: True if this device was set to wake the system from
> - *                   sleep at the last suspend.
> - * @cros_class: The class structure for this device.
> - * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> - *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> - *     @bytes: Number of bytes to read. zero means "read a string" (including
> - *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> - *             read. Caller must ensure that the buffer is large enough for the
> - *             result when reading a string.
> - * @max_request: Max size of message requested.
> - * @max_response: Max size of message response.
> - * @max_passthru: Max sice of passthru message.
> - * @proto_version: The protocol version used for this device.
> - * @priv: Private data.
> - * @irq: Interrupt to use.
> - * @id: Device id.
> - * @din: Input buffer (for data from EC). This buffer will always be
> - *       dword-aligned and include enough space for up to 7 word-alignment
> - *       bytes also, so we can ensure that the body of the message is always
> - *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *       happy. Probably word alignment would be OK, there might be a small
> - *       performance advantage to using dword.
> - * @dout: Output buffer (for data to EC). This buffer will always be
> - *        dword-aligned and include enough space for up to 7 word-alignment
> - *        bytes also, so we can ensure that the body of the message is always
> - *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> - *        happy. Probably word alignment would be OK, there might be a small
> - *        performance advantage to using dword.
> - * @din_size: Size of din buffer to allocate (zero to use static din).
> - * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> - * @wake_enabled: True if this device can wake the system from sleep.
> - * @suspended: True if this device had been suspended.
> - * @cmd_xfer: Send command to EC and get response.
> - *            Returns the number of bytes received if the communication
> - *            succeeded, but that doesn't mean the EC was happy with the
> - *            command. The caller should check msg.result for the EC's result
> - *            code.
> - * @pkt_xfer: Send packet to EC and get response.
> - * @lock: One transaction at a time.
> - * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> - * @host_sleep_v1: True if this EC supports the sleep v1 command.
> - * @event_notifier: Interrupt event notifier for transport devices.
> - * @event_data: Raw payload transferred with the MKBP event.
> - * @event_size: Size in bytes of the event data.
> - * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> - * @ec: The platform_device used by the mfd driver to interface with the
> - *      main EC.
> - * @pd: The platform_device used by the mfd driver to interface with the
> - *      PD behind an EC.
> - */
> -struct cros_ec_device {
> -	/* These are used by other drivers that want to talk to the EC */
> -	const char *phys_name;
> -	struct device *dev;
> -	bool was_wake_device;
> -	struct class *cros_class;
> -	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> -			   unsigned int bytes, void *dest);
> -
> -	/* These are used to implement the platform-specific interface */
> -	u16 max_request;
> -	u16 max_response;
> -	u16 max_passthru;
> -	u16 proto_version;
> -	void *priv;
> -	int irq;
> -	u8 *din;
> -	u8 *dout;
> -	int din_size;
> -	int dout_size;
> -	bool wake_enabled;
> -	bool suspended;
> -	int (*cmd_xfer)(struct cros_ec_device *ec,
> -			struct cros_ec_command *msg);
> -	int (*pkt_xfer)(struct cros_ec_device *ec,
> -			struct cros_ec_command *msg);
> -	struct mutex lock;
> -	bool mkbp_event_supported;
> -	bool host_sleep_v1;
> -	struct blocking_notifier_head event_notifier;
> -
> -	struct ec_response_get_next_event_v1 event_data;
> -	int event_size;
> -	u32 host_event_wake_mask;
> -
> -	/* The platform devices used by the mfd driver */
> -	struct platform_device *ec;
> -	struct platform_device *pd;
> -};
> -
> -/**
> - * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> - * @sensor_num: Id of the sensor, as reported by the EC.
> - */
> -struct cros_ec_sensor_platform {
> -	u8 sensor_num;
> -};
> -
> -/**
> - * struct cros_ec_platform - ChromeOS EC platform information.
> - * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> - *           used in /dev/ and sysfs.
> - * @cmd_offset: Offset to apply for each command. Set when
> - *              registering a device behind another one.
> - */
> -struct cros_ec_platform {
> -	const char *ec_name;
> -	u16 cmd_offset;
> -};
> -
> -struct cros_ec_debugfs;
>  
>  /**
>   * struct cros_ec_dev - ChromeOS EC device entry point.
> @@ -217,133 +40,4 @@ struct cros_ec_dev {
>  
>  #define to_cros_ec_dev(dev)  container_of(dev, struct cros_ec_dev, class_dev)
>  
> -/**
> - * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> - * @ec_dev: Device to suspend.
> - *
> - * This can be called by drivers to handle a suspend event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_suspend(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> - * @ec_dev: Device to resume.
> - *
> - * This can be called by drivers to handle a resume event.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_resume(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> - * @ec_dev: Device to register.
> - * @msg: Message to write.
> - *
> - * This is intended to be used by all ChromeOS EC drivers, but at present
> - * only SPI uses it. Once LPC uses the same protocol it can start using it.
> - * I2C could use it now, with a refactor of the existing code.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> -		       struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_check_result() - Check ec_msg->result.
> - * @ec_dev: EC device.
> - * @msg: Message to check.
> - *
> - * This is used by ChromeOS EC drivers to check the ec_msg->result for
> - * errors and to warn about them.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_check_result(struct cros_ec_device *ec_dev,
> -			 struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * Call this to send a command to the ChromeOS EC.  This should be used
> - * instead of calling the EC's cmd_xfer() callback directly.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> -		     struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> - * @ec_dev: EC device.
> - * @msg: Message to write.
> - *
> - * This function is identical to cros_ec_cmd_xfer, except it returns success
> - * status only if both the command was transmitted successfully and the EC
> - * replied with success status. It's not necessary to check msg->result when
> - * using this function.
> - *
> - * Return: The number of bytes transferred on success or negative error code.
> - */
> -int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> -			    struct cros_ec_command *msg);
> -
> -/**
> - * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> - * @ec_dev: Device to register.
> - *
> - * Before calling this, allocate a pointer to a new device and then fill
> - * in all the fields up to the --private-- marker.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_register(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_unregister() - Remove a ChromeOS EC.
> - * @ec_dev: Device to unregister.
> - *
> - * Call this to deregister a ChromeOS EC, then clean up any private data.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_unregister(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_query_all() -  Query the protocol version supported by the
> - *         ChromeOS EC.
> - * @ec_dev: Device to register.
> - *
> - * Return: 0 on success or negative error code.
> - */
> -int cros_ec_query_all(struct cros_ec_device *ec_dev);
> -
> -/**
> - * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - * @wake_event: Pointer to a bool set to true upon return if the event might be
> - *              treated as a wake event. Ignored if null.
> - *
> - * Return: negative error code on errors; 0 for no data; or else number of
> - * bytes received (i.e., an event was retrieved successfully). Event types are
> - * written out to @ec_dev->event_data.event_type on success.
> - */
> -int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> -
> -/**
> - * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> - * @ec_dev: Device to fetch event from.
> - *
> - * When MKBP is supported, when the EC raises an interrupt, we collect the
> - * events raised and call the functions in the ec notifier. This function
> - * is a helper to know which events are raised.
> - *
> - * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> - */
> -u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> -
>  #endif /* __LINUX_MFD_CROS_EC_H */
> diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
> similarity index 100%
> rename from include/linux/mfd/cros_ec_commands.h
> rename to include/linux/platform_data/cros_ec_commands.h
> diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
> new file mode 100644
> index 000000000000..34dd9e5c1779
> --- /dev/null
> +++ b/include/linux/platform_data/cros_ec_proto.h
> @@ -0,0 +1,315 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * ChromeOS Embedded Controller protocol interface.
> + *
> + * Copyright (C) 2012 Google, Inc
> + */
> +
> +#ifndef __LINUX_CROS_EC_PROTO_H
> +#define __LINUX_CROS_EC_PROTO_H
> +
> +#include <linux/device.h>
> +#include <linux/mutex.h>
> +#include <linux/notifier.h>
> +
> +#define CROS_EC_DEV_NAME	"cros_ec"
> +#define CROS_EC_DEV_FP_NAME	"cros_fp"
> +#define CROS_EC_DEV_ISH_NAME	"cros_ish"
> +#define CROS_EC_DEV_PD_NAME	"cros_pd"
> +#define CROS_EC_DEV_TP_NAME	"cros_tp"
> +
> +/*
> + * The EC is unresponsive for a time after a reboot command.  Add a
> + * simple delay to make sure that the bus stays locked.
> + */
> +#define EC_REBOOT_DELAY_MS		50
> +
> +/*
> + * Max bus-specific overhead incurred by request/responses.
> + * I2C requires 1 additional byte for requests.
> + * I2C requires 2 additional bytes for responses.
> + * SPI requires up to 32 additional bytes for responses.
> + */
> +#define EC_PROTO_VERSION_UNKNOWN	0
> +#define EC_MAX_REQUEST_OVERHEAD		1
> +#define EC_MAX_RESPONSE_OVERHEAD	32
> +
> +/*
> + * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
> + */
> +enum {
> +	EC_MSG_TX_HEADER_BYTES	= 3,
> +	EC_MSG_TX_TRAILER_BYTES	= 1,
> +	EC_MSG_TX_PROTO_BYTES	= EC_MSG_TX_HEADER_BYTES +
> +				  EC_MSG_TX_TRAILER_BYTES,
> +	EC_MSG_RX_PROTO_BYTES	= 3,
> +
> +	/* Max length of messages for proto 2*/
> +	EC_PROTO2_MSG_BYTES	= EC_PROTO2_MAX_PARAM_SIZE +
> +				  EC_MSG_TX_PROTO_BYTES,
> +
> +	EC_MAX_MSG_BYTES	= 64 * 1024,
> +};
> +
> +/**
> + * struct cros_ec_command - Information about a ChromeOS EC command.
> + * @version: Command version number (often 0).
> + * @command: Command to send (EC_CMD_...).
> + * @outsize: Outgoing length in bytes.
> + * @insize: Max number of bytes to accept from the EC.
> + * @result: EC's response to the command (separate from communication failure).
> + * @data: Where to put the incoming data from EC and outgoing data to EC.
> + */
> +struct cros_ec_command {
> +	uint32_t version;
> +	uint32_t command;
> +	uint32_t outsize;
> +	uint32_t insize;
> +	uint32_t result;
> +	uint8_t data[0];
> +};
> +
> +/**
> + * struct cros_ec_device - Information about a ChromeOS EC device.
> + * @phys_name: Name of physical comms layer (e.g. 'i2c-4').
> + * @dev: Device pointer for physical comms device
> + * @was_wake_device: True if this device was set to wake the system from
> + *                   sleep at the last suspend.
> + * @cros_class: The class structure for this device.
> + * @cmd_readmem: Direct read of the EC memory-mapped region, if supported.
> + *     @offset: Is within EC_LPC_ADDR_MEMMAP region.
> + *     @bytes: Number of bytes to read. zero means "read a string" (including
> + *             the trailing '\0'). At most only EC_MEMMAP_SIZE bytes can be
> + *             read. Caller must ensure that the buffer is large enough for the
> + *             result when reading a string.
> + * @max_request: Max size of message requested.
> + * @max_response: Max size of message response.
> + * @max_passthru: Max sice of passthru message.
> + * @proto_version: The protocol version used for this device.
> + * @priv: Private data.
> + * @irq: Interrupt to use.
> + * @id: Device id.
> + * @din: Input buffer (for data from EC). This buffer will always be
> + *       dword-aligned and include enough space for up to 7 word-alignment
> + *       bytes also, so we can ensure that the body of the message is always
> + *       dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *       happy. Probably word alignment would be OK, there might be a small
> + *       performance advantage to using dword.
> + * @dout: Output buffer (for data to EC). This buffer will always be
> + *        dword-aligned and include enough space for up to 7 word-alignment
> + *        bytes also, so we can ensure that the body of the message is always
> + *        dword-aligned (64-bit). We use this alignment to keep ARM and x86
> + *        happy. Probably word alignment would be OK, there might be a small
> + *        performance advantage to using dword.
> + * @din_size: Size of din buffer to allocate (zero to use static din).
> + * @dout_size: Size of dout buffer to allocate (zero to use static dout).
> + * @wake_enabled: True if this device can wake the system from sleep.
> + * @suspended: True if this device had been suspended.
> + * @cmd_xfer: Send command to EC and get response.
> + *            Returns the number of bytes received if the communication
> + *            succeeded, but that doesn't mean the EC was happy with the
> + *            command. The caller should check msg.result for the EC's result
> + *            code.
> + * @pkt_xfer: Send packet to EC and get response.
> + * @lock: One transaction at a time.
> + * @mkbp_event_supported: True if this EC supports the MKBP event protocol.
> + * @host_sleep_v1: True if this EC supports the sleep v1 command.
> + * @event_notifier: Interrupt event notifier for transport devices.
> + * @event_data: Raw payload transferred with the MKBP event.
> + * @event_size: Size in bytes of the event data.
> + * @host_event_wake_mask: Mask of host events that cause wake from suspend.
> + * @ec: The platform_device used by the mfd driver to interface with the
> + *      main EC.
> + * @pd: The platform_device used by the mfd driver to interface with the
> + *      PD behind an EC.
> + */
> +struct cros_ec_device {
> +	/* These are used by other drivers that want to talk to the EC */
> +	const char *phys_name;
> +	struct device *dev;
> +	bool was_wake_device;
> +	struct class *cros_class;
> +	int (*cmd_readmem)(struct cros_ec_device *ec, unsigned int offset,
> +			   unsigned int bytes, void *dest);
> +
> +	/* These are used to implement the platform-specific interface */
> +	u16 max_request;
> +	u16 max_response;
> +	u16 max_passthru;
> +	u16 proto_version;
> +	void *priv;
> +	int irq;
> +	u8 *din;
> +	u8 *dout;
> +	int din_size;
> +	int dout_size;
> +	bool wake_enabled;
> +	bool suspended;
> +	int (*cmd_xfer)(struct cros_ec_device *ec,
> +			struct cros_ec_command *msg);
> +	int (*pkt_xfer)(struct cros_ec_device *ec,
> +			struct cros_ec_command *msg);
> +	struct mutex lock;
> +	bool mkbp_event_supported;
> +	bool host_sleep_v1;
> +	struct blocking_notifier_head event_notifier;
> +
> +	struct ec_response_get_next_event_v1 event_data;
> +	int event_size;
> +	u32 host_event_wake_mask;
> +
> +	/* The platform devices used by the mfd driver */
> +	struct platform_device *ec;
> +	struct platform_device *pd;
> +};
> +
> +/**
> + * struct cros_ec_sensor_platform - ChromeOS EC sensor platform information.
> + * @sensor_num: Id of the sensor, as reported by the EC.
> + */
> +struct cros_ec_sensor_platform {
> +	u8 sensor_num;
> +};
> +
> +/**
> + * struct cros_ec_platform - ChromeOS EC platform information.
> + * @ec_name: Name of EC device (e.g. 'cros-ec', 'cros-pd', ...)
> + *           used in /dev/ and sysfs.
> + * @cmd_offset: Offset to apply for each command. Set when
> + *              registering a device behind another one.
> + */
> +struct cros_ec_platform {
> +	const char *ec_name;
> +	u16 cmd_offset;
> +};
> +
> +/**
> + * cros_ec_suspend() - Handle a suspend operation for the ChromeOS EC device.
> + * @ec_dev: Device to suspend.
> + *
> + * This can be called by drivers to handle a suspend event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_suspend(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_resume() - Handle a resume operation for the ChromeOS EC device.
> + * @ec_dev: Device to resume.
> + *
> + * This can be called by drivers to handle a resume event.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_resume(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_prepare_tx() - Prepare an outgoing message in the output buffer.
> + * @ec_dev: Device to register.
> + * @msg: Message to write.
> + *
> + * This is intended to be used by all ChromeOS EC drivers, but at present
> + * only SPI uses it. Once LPC uses the same protocol it can start using it.
> + * I2C could use it now, with a refactor of the existing code.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_prepare_tx(struct cros_ec_device *ec_dev,
> +		       struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_check_result() - Check ec_msg->result.
> + * @ec_dev: EC device.
> + * @msg: Message to check.
> + *
> + * This is used by ChromeOS EC drivers to check the ec_msg->result for
> + * errors and to warn about them.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_check_result(struct cros_ec_device *ec_dev,
> +			 struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * Call this to send a command to the ChromeOS EC.  This should be used
> + * instead of calling the EC's cmd_xfer() callback directly.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_cmd_xfer(struct cros_ec_device *ec_dev,
> +		     struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_cmd_xfer_status() - Send a command to the ChromeOS EC.
> + * @ec_dev: EC device.
> + * @msg: Message to write.
> + *
> + * This function is identical to cros_ec_cmd_xfer, except it returns success
> + * status only if both the command was transmitted successfully and the EC
> + * replied with success status. It's not necessary to check msg->result when
> + * using this function.
> + *
> + * Return: The number of bytes transferred on success or negative error code.
> + */
> +int cros_ec_cmd_xfer_status(struct cros_ec_device *ec_dev,
> +			    struct cros_ec_command *msg);
> +
> +/**
> + * cros_ec_register() - Register a new ChromeOS EC, using the provided info.
> + * @ec_dev: Device to register.
> + *
> + * Before calling this, allocate a pointer to a new device and then fill
> + * in all the fields up to the --private-- marker.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_register(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_unregister() - Remove a ChromeOS EC.
> + * @ec_dev: Device to unregister.
> + *
> + * Call this to deregister a ChromeOS EC, then clean up any private data.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_unregister(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_query_all() -  Query the protocol version supported by the
> + *         ChromeOS EC.
> + * @ec_dev: Device to register.
> + *
> + * Return: 0 on success or negative error code.
> + */
> +int cros_ec_query_all(struct cros_ec_device *ec_dev);
> +
> +/**
> + * cros_ec_get_next_event() - Fetch next event from the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + * @wake_event: Pointer to a bool set to true upon return if the event might be
> + *              treated as a wake event. Ignored if null.
> + *
> + * Return: negative error code on errors; 0 for no data; or else number of
> + * bytes received (i.e., an event was retrieved successfully). Event types are
> + * written out to @ec_dev->event_data.event_type on success.
> + */
> +int cros_ec_get_next_event(struct cros_ec_device *ec_dev, bool *wake_event);
> +
> +/**
> + * cros_ec_get_host_event() - Return a mask of event set by the ChromeOS EC.
> + * @ec_dev: Device to fetch event from.
> + *
> + * When MKBP is supported, when the EC raises an interrupt, we collect the
> + * events raised and call the functions in the ec notifier. This function
> + * is a helper to know which events are raised.
> + *
> + * Return: 0 on error or non-zero bitmask of one or more EC_HOST_EVENT_*.
> + */
> +u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
> +
> +#endif /* __LINUX_CROS_EC_PROTO_H */
> diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
> index 87830ed5ebf4..79bb4081d3c2 100644
> --- a/sound/soc/codecs/cros_ec_codec.c
> +++ b/sound/soc/codecs/cros_ec_codec.c
> @@ -9,9 +9,9 @@
>  #include <linux/delay.h>
>  #include <linux/device.h>
>  #include <linux/kernel.h>
> -#include <linux/mfd/cros_ec.h>
> -#include <linux/mfd/cros_ec_commands.h>
>  #include <linux/module.h>
> +#include <linux/platform_data/cros_ec_commands.h>
> +#include <linux/platform_data/cros_ec_proto.h>
>  #include <linux/platform_device.h>
>  #include <sound/pcm.h>
>  #include <sound/pcm_params.h>
> -- 
> 2.20.1
> 

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