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https://github.com/brain-hackers/u-boot-brain
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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
/*
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* Copyright (C) 2015 Samsung Electronics
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* Przemyslaw Marczak <p.marczak@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <errno.h>
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#include <dm.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <power/s2mps11.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int s2mps11_reg_count(struct udevice *dev)
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{
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return S2MPS11_REG_COUNT;
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}
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static int s2mps11_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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int ret;
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ret = dm_i2c_write(dev, reg, buff, len);
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if (ret)
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error("write error to device: %p register: %#x!", dev, reg);
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return ret;
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}
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static int s2mps11_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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int ret;
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ret = dm_i2c_read(dev, reg, buff, len);
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if (ret)
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error("read error from device: %p register: %#x!", dev, reg);
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return ret;
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}
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static struct dm_pmic_ops s2mps11_ops = {
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.reg_count = s2mps11_reg_count,
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.read = s2mps11_read,
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.write = s2mps11_write,
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};
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static const struct udevice_id s2mps11_ids[] = {
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{ .compatible = "samsung,s2mps11-pmic" },
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{ }
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};
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U_BOOT_DRIVER(pmic_s2mps11) = {
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.name = "s2mps11_pmic",
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.id = UCLASS_PMIC,
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.of_match = s2mps11_ids,
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.ops = &s2mps11_ops,
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};
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