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dm: pmic: add s2mps11 PMIC I/O driver 

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_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>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
utp
Przemyslaw Marczak 2015-10-27 13:07:58 +01:00 committed by Minkyu Kang
parent d64c8adedc
commit 35d460fbc8
5 changed files with 203 additions and 0 deletions
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17
doc/device-tree-bindings/pmic/s2mps11.txt 100644
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@ -0,0 +1,17 @@
SAMSUNG, 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@66 {
compatible = "samsung,s2mps11-pmic";
reg = <0x66>;
};

14
drivers/power/pmic/Kconfig
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@ -33,6 +33,20 @@ config DM_PMIC_MAX77686
This config enables implementation of driver-model pmic uclass features
for PMIC MAX77686. The driver implements read/write operations.
config 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

1
drivers/power/pmic/Makefile
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@ -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_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_PMIC_ACT8846) += act8846.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o

62
drivers/power/pmic/s2mps11.c 100644
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@ -0,0 +1,62 @@
/*
* 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)
{
int ret;
ret = dm_i2c_write(dev, reg, buff, len);
if (ret)
error("write error to device: %p register: %#x!", dev, reg);
return ret;
}
static int s2mps11_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
int ret;
ret = dm_i2c_read(dev, reg, buff, len);
if (ret)
error("read error from device: %p register: %#x!", dev, reg);
return ret;
}
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,
};

109
include/power/s2mps11.h 100644
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@ -0,0 +1,109 @@
#ifndef __S2MPS11__H__
#define __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