[U-Boot] [PATCH 4/7] dm: pmic: add s2mps11 PMIC I/O driver

Przemyslaw Marczak
2015-08-28T13:59:31Z

This driver allows I/O operations on the Samsung S2MPS11 PMIC,
which provides lots of LDO/BUCK outputs.

To enable it, update defconfig with:
- CONFIG_DM_PMIC_S2MPS11
and additional, if were not defined:
- CONFIG_CMD_PMIC
- CONFIG_ERRNO_STR

The binding info: doc/device-tree-bindings/pmic/s2mps11.txt

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
---
doc/device-tree-bindings/pmic/s2mps11.txt | 17 +++++
drivers/power/pmic/Kconfig | 14 ++++
drivers/power/pmic/Makefile | 1 +
drivers/power/pmic/s2mps11.c | 60 ++++++++++++++++
include/power/s2mps11.h | 109 ++++++++++++++++++++++++++++++
5 files changed, 201 insertions(+)
create mode 100644 doc/device-tree-bindings/pmic/s2mps11.txt
create mode 100644 drivers/power/pmic/s2mps11.c
create mode 100644 include/power/s2mps11.h

diff --git a/doc/device-tree-bindings/pmic/s2mps11.txt b/doc/device-tree-bindings/pmic/s2mps11.txt
new file mode 100644
index 0000000..db8d624
--- /dev/null
+++ b/doc/device-tree-bindings/pmic/s2mps11.txt
@@ -0,0 +1,17 @@
+SAMSUBNG, S2MPS11 PMIC
+
+This file describes the binding info for the PMIC driver:
+- drivers/power/pmic/s2mps11.c
+
+Required properties:
+- compatible: "samsung,s2mps11-pmic"
+- reg = 0x66
+
+With those two properties, the pmic device can be used for read/write only.
+
+Example:
+
+s2mps11 at 66 {
+ compatible = "samsung,s2mps11-pmic";
+ reg = <0x66>;
+};
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index fc6a374..c66b352 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -24,6 +24,20 @@ config DM_PMIC_MAX77686
This config enables implementation of driver-model pmic uclass features
for PMIC MAX77686. The driver implements read/write operations.

+config DM_PMIC_S2MPS11
+ bool "Enable Driver Model for PMIC Samsung S2MPS11"
+ depends on DM_PMIC
+ ---help---
+ The Samsung S2MPS11 PMIC provides:
+ - 38 adjustable LDO regulators
+ - 9 High-Efficiency Buck Converters
+ - 1 BuckBoost Converter
+ - RTC with two alarms
+ - Backup battery charger
+ - I2C Configuration Interface
+ This driver provides access to I/O interface only.
+ Binding info: doc/device-tree-bindings/pmic/s2mps11.txt
+
config DM_PMIC_SANDBOX
bool "Enable Driver Model for emulated Sandbox PMIC "
depends on DM_PMIC
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 99c5778..1b58d98 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -8,6 +8,7 @@
obj-$(CONFIG_DM_PMIC) += pmic-uclass.o
obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
+obj-$(CONFIG_DM_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
diff --git a/drivers/power/pmic/s2mps11.c b/drivers/power/pmic/s2mps11.c
new file mode 100644
index 0000000..7e28402
--- /dev/null
+++ b/drivers/power/pmic/s2mps11.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/s2mps11.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int s2mps11_reg_count(struct udevice *dev)
+{
+ return S2MPS11_REG_COUNT;
+}
+
+static int s2mps11_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ error("write error to device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int s2mps11_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ if (dm_i2c_read(dev, reg, buff, len)) {
+ error("read error from device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static struct dm_pmic_ops s2mps11_ops = {
+ .reg_count = s2mps11_reg_count,
+ .read = s2mps11_read,
+ .write = s2mps11_write,
+};
+
+static const struct udevice_id s2mps11_ids[] = {
+ { .compatible = "samsung,s2mps11-pmic" },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_s2mps11) = {
+ .name = "s2mps11_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = s2mps11_ids,
+ .ops = &s2mps11_ops,
+};
diff --git a/include/power/s2mps11.h b/include/power/s2mps11.h
new file mode 100644
index 0000000..885a816
--- /dev/null
+++ b/include/power/s2mps11.h
@@ -0,0 +1,109 @@
+#ifndef __INCLUDE__S2MPS11__H__
+#define __INCLUDE__S2MPS11__H__
+
+enum s2mps11_reg {
+ S2MPS11_REG_ID = 0,
+ S2MPS11_REG_INT1,
+ S2MPS11_REG_INT2,
+ S2MPS11_REG_INT3,
+ S2MPS11_REG_INT1M,
+ S2MPS11_REG_INT2M,
+ S2MPS11_REG_INT3M,
+ S2MPS11_REG_STATUS1,
+ S2MPS11_REG_STATUS2,
+ S2MPS11_REG_OFFSRC,
+ S2MPS11_REG_PWRONSRC,
+ S2MPS11_REG_RTC_CTRL,
+ S2MPS11_REG_CTRL1,
+ S2MPS11_REG_ETC_TEST,
+ S2MPS11_REG_RSVD3,
+ S2MPS11_REG_BU_CHG,
+ S2MPS11_REG_RAMP,
+ S2MPS11_REG_RAMP_BUCK,
+ S2MPS11_REG_LDO1_8,
+ S2MPS11_REG_LDO9_16,
+ S2MPS11_REG_LDO17_24,
+ S2MPS11_REG_LDO25_32,
+ S2MPS11_REG_LDO33_38,
+ S2MPS11_REG_LDO1_8_OVC,
+ S2MPS11_REG_LDO9_16_OVC,
+ S2MPS11_REG_LDO17_24_OVC,
+ S2MPS11_REG_LDO25_32_OVC,
+ S2MPS11_REG_LDO33_38_OVC,
+ S2MPS11_REG_RESERVED1,
+ S2MPS11_REG_RESERVED2,
+ S2MPS11_REG_RESERVED3,
+ S2MPS11_REG_RESERVED4,
+ S2MPS11_REG_RESERVED5,
+ S2MPS11_REG_RESERVED6,
+ S2MPS11_REG_RESERVED7,
+ S2MPS11_REG_RESERVED8,
+ S2MPS11_REG_WDRSTEN_CTRL,
+ S2MPS11_REG_B1CTRL1,
+ S2MPS11_REG_B1CTRL2,
+ S2MPS11_REG_B2CTRL1,
+ S2MPS11_REG_B2CTRL2,
+ S2MPS11_REG_B3CTRL1,
+ S2MPS11_REG_B3CTRL2,
+ S2MPS11_REG_B4CTRL1,
+ S2MPS11_REG_B4CTRL2,
+ S2MPS11_REG_B5CTRL1,
+ S2MPS11_REG_BUCK5_SW,
+ S2MPS11_REG_B5CTRL2,
+ S2MPS11_REG_B5CTRL3,
+ S2MPS11_REG_B5CTRL4,
+ S2MPS11_REG_B5CTRL5,
+ S2MPS11_REG_B6CTRL1,
+ S2MPS11_REG_B6CTRL2,
+ S2MPS11_REG_B7CTRL1,
+ S2MPS11_REG_B7CTRL2,
+ S2MPS11_REG_B8CTRL1,
+ S2MPS11_REG_B8CTRL2,
+ S2MPS11_REG_B9CTRL1,
+ S2MPS11_REG_B9CTRL2,
+ S2MPS11_REG_B10CTRL1,
+ S2MPS11_REG_B10CTRL2,
+ S2MPS11_REG_L1CTRL,
+ S2MPS11_REG_L2CTRL,
+ S2MPS11_REG_L3CTRL,
+ S2MPS11_REG_L4CTRL,
+ S2MPS11_REG_L5CTRL,
+ S2MPS11_REG_L6CTRL,
+ S2MPS11_REG_L7CTRL,
+ S2MPS11_REG_L8CTRL,
+ S2MPS11_REG_L9CTRL,
+ S2MPS11_REG_L10CTRL,
+ S2MPS11_REG_L11CTRL,
+ S2MPS11_REG_L12CTRL,
+ S2MPS11_REG_L13CTRL,
+ S2MPS11_REG_L14CTRL,
+ S2MPS11_REG_L15CTRL,
+ S2MPS11_REG_L16CTRL,
+ S2MPS11_REG_L17CTRL,
+ S2MPS11_REG_L18CTRL,
+ S2MPS11_REG_L19CTRL,
+ S2MPS11_REG_L20CTRL,
+ S2MPS11_REG_L21CTRL,
+ S2MPS11_REG_L22CTRL,
+ S2MPS11_REG_L23CTRL,
+ S2MPS11_REG_L24CTRL,
+ S2MPS11_REG_L25CTRL,
+ S2MPS11_REG_L26CTRL,
+ S2MPS11_REG_L27CTRL,
+ S2MPS11_REG_L28CTRL,
+ S2MPS11_REG_L29CTRL,
+ S2MPS11_REG_L30CTRL,
+ S2MPS11_REG_L31CTRL,
+ S2MPS11_REG_L32CTRL,
+ S2MPS11_REG_L33CTRL,
+ S2MPS11_REG_L34CTRL,
+ S2MPS11_REG_L35CTRL,
+ S2MPS11_REG_L36CTRL,
+ S2MPS11_REG_L37CTRL,
+ S2MPS11_REG_L38CTRL,
+ S2MPS11_REG_COUNT,
+};
+
+#define S2MPS11_LDO26_ENABLE 0xec
+
+#endif
--
1.9.1