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https://github.com/AsahiLinux/u-boot
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100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
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* Keerthy <j-keerthy@ti.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/palmas.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 = PALMAS_LDO_DRIVER },
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{ .prefix = "smps", .driver = PALMAS_SMPS_DRIVER },
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{ },
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};
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static int palmas_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 palmas_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 palmas_bind(struct udevice *dev)
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{
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ofnode pmic_node = ofnode_null(), regulators_node;
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ofnode subnode;
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int children;
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dev_for_each_subnode(subnode, dev) {
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const char *name;
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char *temp;
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name = ofnode_get_name(subnode);
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temp = strstr(name, "pmic");
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if (temp) {
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pmic_node = subnode;
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break;
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}
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}
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if (!ofnode_valid(pmic_node)) {
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debug("%s: %s pmic subnode not found!\n", __func__, dev->name);
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return -ENXIO;
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}
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regulators_node = ofnode_find_subnode(pmic_node, "regulators");
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if (!ofnode_valid(regulators_node)) {
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debug("%s: %s reg subnode not found!\n", __func__, dev->name);
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return -ENXIO;
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}
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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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/* Always return success for this device */
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return 0;
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}
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static struct dm_pmic_ops palmas_ops = {
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.read = palmas_read,
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.write = palmas_write,
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};
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static const struct udevice_id palmas_ids[] = {
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{ .compatible = "ti,tps659038", .data = TPS659038 },
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{ .compatible = "ti,tps65917" , .data = TPS65917 },
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{ }
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};
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U_BOOT_DRIVER(pmic_palmas) = {
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.name = "palmas_pmic",
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.id = UCLASS_PMIC,
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.of_match = palmas_ids,
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.bind = palmas_bind,
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.ops = &palmas_ops,
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};
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