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https://github.com/AsahiLinux/u-boot
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89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2022 BayLibre, SAS
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* Author: Neil Armstrong <narmstrong@baylibre.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/regulator.h>
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#include <power/tps65219.h>
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#include <dm/device.h>
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "ldo", .driver = TPS65219_LDO_DRIVER },
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{ .prefix = "buck", .driver = TPS65219_BUCK_DRIVER },
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{ },
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};
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static int tps65219_reg_count(struct udevice *dev)
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{
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return 0x41;
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}
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static int tps65219_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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if (dm_i2c_write(dev, reg, buff, len)) {
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pr_err("write error to device: %p register: %#x!\n", dev, 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 tps65219_read(struct udevice *dev, uint reg, uint8_t *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("read error from device: %p register: %#x!\n", dev, 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 tps65219_bind(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, "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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}
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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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printf("%s: %s - no child found\n", __func__, dev->name);
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/* Probe all the child devices */
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return dm_scan_fdt_dev(dev);
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}
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static struct dm_pmic_ops tps65219_ops = {
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.reg_count = tps65219_reg_count,
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.read = tps65219_read,
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.write = tps65219_write,
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};
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static const struct udevice_id tps65219_ids[] = {
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{ .compatible = "ti,tps65219" },
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{ }
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};
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U_BOOT_DRIVER(pmic_tps65219) = {
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.name = "tps65219_pmic",
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.id = UCLASS_PMIC,
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.of_match = tps65219_ids,
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.bind = tps65219_bind,
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.ops = &tps65219_ops,
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};
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