mirror of
https://github.com/AsahiLinux/u-boot
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88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#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 <log.h>
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#include <power/pmic.h>
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#include <power/s2mps11.h>
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = S2MPS11_OF_LDO_PREFIX, .driver = S2MPS11_LDO_DRIVER },
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{ .prefix = S2MPS11_OF_BUCK_PREFIX, .driver = S2MPS11_BUCK_DRIVER },
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{ },
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};
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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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pr_err("write error to device: %p register: %#x!\n", 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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pr_err("read error from device: %p register: %#x!\n", dev, reg);
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return ret;
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}
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static int s2mps11_probe(struct udevice *dev)
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{
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ofnode regulators_node;
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int children;
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regulators_node = dev_read_subnode(dev, "voltage-regulators");
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if (!ofnode_valid(regulators_node)) {
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debug("%s: %s regulators subnode not found!\n", __func__,
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dev->name);
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return -ENXIO;
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}
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debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
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children = pmic_bind_children(dev, regulators_node, pmic_children_info);
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if (!children)
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debug("%s: %s - no child found\n", __func__, dev->name);
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return 0;
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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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.probe = s2mps11_probe,
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};
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