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power: pmic: add the max8998 controller for DM

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Add the max8998 controller for Driver model.
Samsung S5P series are using max8998 pmic controller.
In future, it should be supported the regulator framework.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Jaehoon Chung 2016-12-15 18:21:10 +09:00 committed by Minkyu Kang
parent 0d92f2141a
commit 103e83a1b0
3 changed files with 69 additions and 0 deletions
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7
drivers/power/pmic/Kconfig
View file

@ -54,6 +54,13 @@ 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_MAX8998
bool "Enable Driver Model for PMIC MAX8998"
depends on DM_PMIC
---help---
This config enables implementation of driver-model pmic uclass features
for PMIC MAX8998. The driver implements read/write operations.
config PMIC_PM8916
bool "Enable Driver Model for Qualcomm PM8916 PMIC"
depends on DM_PMIC

1
drivers/power/pmic/Makefile
View file

@ -7,6 +7,7 @@
obj-$(CONFIG_DM_PMIC) += pmic-uclass.o
obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o
obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o

61
drivers/power/pmic/max8998.c Normal file
View file

@ -0,0 +1,61 @@
/*
* Copyright (C) 2016 Samsung Electronics
* Jaehoon Chung <jh80.chung@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/max8998_pmic.h>
#include <errno.h>
DECLARE_GLOBAL_DATA_PTR;
static int max8998_reg_count(struct udevice *dev)
{
return PMIC_NUM_OF_REGS;
}
static int max8998_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 max8998_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 max8998_ops = {
.reg_count = max8998_reg_count,
.read = max8998_read,
.write = max8998_write,
};
static const struct udevice_id max8998_ids[] = {
{ .compatible = "maxim,max8998" },
{ }
};
U_BOOT_DRIVER(pmic_max8998) = {
.name = "max8998_pmic",
.id = UCLASS_PMIC,
.of_match = max8998_ids,
.ops = &max8998_ops,
};