mirror of
https://github.com/AsahiLinux/u-boot
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87 lines
2 KiB
C
87 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) 2018 Theobroma Systems Design und Consulting GmbH
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*/
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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <dm/device-internal.h>
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#include <dm/device_compat.h>
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#include <dm/lists.h>
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#include <i2c.h>
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#include <power/fan53555.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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static int pmic_fan53555_reg_count(struct udevice *dev)
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{
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return 1;
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};
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static int pmic_fan53555_read(struct udevice *dev, uint reg,
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u8 *buff, int len)
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{
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if (dm_i2c_read(dev, reg, buff, len)) {
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pr_err("%s: read error for register: %#x!", dev->name, reg);
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return -EIO;
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}
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return 0;
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}
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static int pmic_fan53555_write(struct udevice *dev, uint reg,
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const u8 *buff, int len)
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{
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if (dm_i2c_write(dev, reg, buff, len)) {
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pr_err("%s: write error for register: %#x!", dev->name, reg);
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return -EIO;
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}
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return 0;
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}
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static int pmic_fan53555_bind(struct udevice *dev)
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{
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/*
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* The FAN53555 has only a single regulator and therefore doesn't
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* have a subnode. So we have to rebind a child device (the one
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* regulator) here.
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*/
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const char *regulator_driver_name = "fan53555_regulator";
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struct udevice *child;
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struct driver *drv;
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debug("%s\n", __func__);
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drv = lists_driver_lookup_name(regulator_driver_name);
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if (!drv) {
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dev_err(dev, "no driver '%s'\n", regulator_driver_name);
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return -ENOENT;
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}
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return device_bind_with_driver_data(dev, drv, "SW", dev->driver_data,
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dev_ofnode(dev), &child);
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};
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static struct dm_pmic_ops pmic_fan53555_ops = {
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.reg_count = pmic_fan53555_reg_count,
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.read = pmic_fan53555_read,
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.write = pmic_fan53555_write,
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};
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static const struct udevice_id pmic_fan53555_match[] = {
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{ .compatible = "fcs,fan53555", .data = FAN53555_VENDOR_FAIRCHILD, },
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{ .compatible = "silergy,syr827", .data = FAN53555_VENDOR_SILERGY, },
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{ .compatible = "silergy,syr828", .data = FAN53555_VENDOR_SILERGY, },
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{ },
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};
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U_BOOT_DRIVER(pmic_fan53555) = {
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.name = "pmic_fan53555",
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.id = UCLASS_PMIC,
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.of_match = pmic_fan53555_match,
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.bind = pmic_fan53555_bind,
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.ops = &pmic_fan53555_ops,
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};
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