[PATCH v4 0/3] Support XDPE112

[PATCH v4 0/3] Support XDPE112

[Marcello Sylvester Bauer]

Add support for Infineon Multi-phase XDPE112 family regulator. The main
difference to the XDPE122 family is it uses a different format for
voltage out. Add the required logic to the existing xdpe12284 driver
accordingly.

Changes in v4:
- move VOUT_MODE format detection into identify function

Changes in v3:
- detect VOUT_MODE during probing
- set xdpe122_identify/xdpe122_read_word_data only if VOUT is vid

Changes in v2:
- rebase on current hwmon-next branch

Marcello Sylvester Bauer (3):
  dt-bindings: trivial-devices: Add xdpe11280
  hwmon (xdpe12284): Add support for xdpe11280
  hwmon (xdpe12284): Add regulator support

 .../devicetree/bindings/trivial-devices.yaml  |  2 ++
 Documentation/hwmon/xdpe12284.rst             | 12 ++++---
 drivers/hwmon/pmbus/Kconfig                   |  6 ++++
 drivers/hwmon/pmbus/xdpe12284.c               | 32 +++++++++++++++++--
 4 files changed, 45 insertions(+), 7 deletions(-)

-- 
2.35.1

[PATCH v4 1/3] dt-bindings: trivial-devices: Add xdpe11280

[Marcello Sylvester Bauer]

Add Infineon Multi-phase Digital Controller XDPE11280.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
Acked-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 1c49bbc654ee..da929cb08463 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -137,6 +137,8 @@ properties:
           - infineon,slb9645tt
             # Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor
           - infineon,tlv493d-a1b6
+            # Infineon Multi-phase Digital VR Controller xdpe11280
+          - infineon,xdpe11280
             # Infineon Multi-phase Digital VR Controller xdpe12254
           - infineon,xdpe12254
             # Infineon Multi-phase Digital VR Controller xdpe12284
-- 
2.35.1

[PATCH v4 2/3] hwmon (xdpe12284): Add support for xdpe11280

[Marcello Sylvester Bauer]

Add support for another Infineon Multi-phase controller chip. The
xdpe11280 uses linear instead of vid data format for VOUT. Detect
VOUT_MODE format during identification and skip the xdpe122 related
adaptions in case it is linear.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
---
 Documentation/hwmon/xdpe12284.rst | 12 ++++++++----
 drivers/hwmon/pmbus/xdpe12284.c   | 21 ++++++++++++++++++---
 2 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/Documentation/hwmon/xdpe12284.rst b/Documentation/hwmon/xdpe12284.rst
index 67d1f87808e5..a224dc74ad35 100644
--- a/Documentation/hwmon/xdpe12284.rst
+++ b/Documentation/hwmon/xdpe12284.rst
@@ -5,6 +5,10 @@ Kernel driver xdpe122
 
 Supported chips:
 
+  * Infineon XDPE11280
+
+    Prefix: 'xdpe11280'
+
   * Infineon XDPE12254
 
     Prefix: 'xdpe12254'
@@ -20,10 +24,10 @@ Authors:
 Description
 -----------
 
-This driver implements support for Infineon Multi-phase XDPE122 family
-dual loop voltage regulators.
-The family includes XDPE12284 and XDPE12254 devices.
-The devices from this family complaint with:
+This driver implements support for Infineon Multi-phase XDPE112 and XDPE122
+family dual loop voltage regulators.
+These families include XDPE11280, XDPE12284 and XDPE12254 devices.
+The devices from this family compliant with:
 
 - Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 and IMPVP9 rev 1.3 DC-DC
   converter specification.
diff --git a/drivers/hwmon/pmbus/xdpe12284.c b/drivers/hwmon/pmbus/xdpe12284.c
index b07da06a40c9..b979c88d2e87 100644
--- a/drivers/hwmon/pmbus/xdpe12284.c
+++ b/drivers/hwmon/pmbus/xdpe12284.c
@@ -76,7 +76,22 @@ static int xdpe122_identify(struct i2c_client *client,
 			    struct pmbus_driver_info *info)
 {
 	u8 vout_params;
-	int i, ret;
+	int i, ret, vout_mode;
+
+	vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
+	if (vout_mode >= 0 && vout_mode != 0xff) {
+		switch (vout_mode >> 5) {
+		case 0:
+			info->format[PSC_VOLTAGE_OUT] = linear;
+			return 0;
+		case 1:
+			info->format[PSC_VOLTAGE_OUT] = vid;
+			info->read_word_data = xdpe122_read_word_data;
+			break;
+		default:
+			return -ENODEV;
+		}
+	}
 
 	for (i = 0; i < XDPE122_PAGE_NUM; i++) {
 		/* Read the register with VOUT scaling value.*/
@@ -110,7 +125,6 @@ static int xdpe122_identify(struct i2c_client *client,
 static struct pmbus_driver_info xdpe122_info = {
 	.pages = XDPE122_PAGE_NUM,
 	.format[PSC_VOLTAGE_IN] = linear,
-	.format[PSC_VOLTAGE_OUT] = vid,
 	.format[PSC_TEMPERATURE] = linear,
 	.format[PSC_CURRENT_IN] = linear,
 	.format[PSC_CURRENT_OUT] = linear,
@@ -124,7 +138,6 @@ static struct pmbus_driver_info xdpe122_info = {
 		PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
 		PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
 	.identify = xdpe122_identify,
-	.read_word_data = xdpe122_read_word_data,
 };
 
 static int xdpe122_probe(struct i2c_client *client)
@@ -140,6 +153,7 @@ static int xdpe122_probe(struct i2c_client *client)
 }
 
 static const struct i2c_device_id xdpe122_id[] = {
+	{"xdpe11280", 0},
 	{"xdpe12254", 0},
 	{"xdpe12284", 0},
 	{}
@@ -148,6 +162,7 @@ static const struct i2c_device_id xdpe122_id[] = {
 MODULE_DEVICE_TABLE(i2c, xdpe122_id);
 
 static const struct of_device_id __maybe_unused xdpe122_of_match[] = {
+	{.compatible = "infineon,xdpe11280"},
 	{.compatible = "infineon,xdpe12254"},
 	{.compatible = "infineon,xdpe12284"},
 	{}
-- 
2.35.1

[PATCH v4 3/3] hwmon (xdpe12284): Add regulator support

[Marcello Sylvester Bauer]

Add simple on/off regulator support for xdpe12284 and
other pmbus parts supported by the xdpe12284 driver.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
---
 drivers/hwmon/pmbus/Kconfig     |  6 ++++++
 drivers/hwmon/pmbus/xdpe12284.c | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 6552467c588d..a2ea1d5a8765 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -417,6 +417,12 @@ config SENSORS_XDPE122
 	  This driver can also be built as a module. If so, the module will
 	  be called xdpe12284.
 
+config SENSORS_XDPE122_REGULATOR
+	bool "Regulator support for XDPE122 and compatibles"
+	depends on SENSORS_XDPE122 && REGULATOR
+	help
+	  Uses the xdpe12284 or compatible as regulator.
+
 config SENSORS_ZL6100
 	tristate "Intersil ZL6100 and compatibles"
 	help
diff --git a/drivers/hwmon/pmbus/xdpe12284.c b/drivers/hwmon/pmbus/xdpe12284.c
index b979c88d2e87..18fffc5d749b 100644
--- a/drivers/hwmon/pmbus/xdpe12284.c
+++ b/drivers/hwmon/pmbus/xdpe12284.c
@@ -10,6 +10,8 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/regulator/driver.h>
+
 #include "pmbus.h"
 
 #define XDPE122_PROT_VR12_5MV		0x01 /* VR12.0 mode, 5-mV DAC */
@@ -122,6 +124,11 @@ static int xdpe122_identify(struct i2c_client *client,
 	return 0;
 }
 
+static const struct regulator_desc xdpe122_reg_desc[] = {
+	PMBUS_REGULATOR("vout", 0),
+	PMBUS_REGULATOR("vout", 1),
+};
+
 static struct pmbus_driver_info xdpe122_info = {
 	.pages = XDPE122_PAGE_NUM,
 	.format[PSC_VOLTAGE_IN] = linear,
@@ -138,6 +145,10 @@ static struct pmbus_driver_info xdpe122_info = {
 		PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
 		PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
 	.identify = xdpe122_identify,
+#if IS_ENABLED(CONFIG_SENSORS_XDPE122_REGULATOR)
+	.num_regulators = 2,
+	.reg_desc = xdpe122_reg_desc,
+#endif
 };
 
 static int xdpe122_probe(struct i2c_client *client)
-- 
2.35.1

Re: [PATCH v4 0/3] Support XDPE112

[Guenter Roeck]

On Wed, Mar 02, 2022 at 10:49:18AM +0100, Marcello Sylvester Bauer wrote:
> Add support for Infineon Multi-phase XDPE112 family regulator. The main
> difference to the XDPE122 family is it uses a different format for
> voltage out. Add the required logic to the existing xdpe12284 driver
> accordingly.
> 
> Changes in v4:
> - move VOUT_MODE format detection into identify function
> 
> Changes in v3:
> - detect VOUT_MODE during probing
> - set xdpe122_identify/xdpe122_read_word_data only if VOUT is vid
> 
> Changes in v2:
> - rebase on current hwmon-next branch
> 
> Marcello Sylvester Bauer (3):
>   dt-bindings: trivial-devices: Add xdpe11280
>   hwmon (xdpe12284): Add support for xdpe11280
>   hwmon (xdpe12284): Add regulator support
> 
>  .../devicetree/bindings/trivial-devices.yaml  |  2 ++
>  Documentation/hwmon/xdpe12284.rst             | 12 ++++---
>  drivers/hwmon/pmbus/Kconfig                   |  6 ++++
>  drivers/hwmon/pmbus/xdpe12284.c               | 32 +++++++++++++++++--
>  4 files changed, 45 insertions(+), 7 deletions(-)
> 

Series applied to hwmon-next.

Thanks,
Guenter