mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-15 06:33:45 +09:00
![Przemyslaw Marczak](/assets/img/avatar_default.png)
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>
63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
/*
|
|
* 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,
|
|
};
|