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https://github.com/brain-hackers/u-boot-brain
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85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2019 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/tps65941.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 = TPS65941_LDO_DRIVER },
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{ .prefix = "buck", .driver = TPS65941_BUCK_DRIVER },
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{ },
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};
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static int tps65941_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 tps65941_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 tps65941_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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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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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 tps65941_ops = {
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.read = tps65941_read,
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.write = tps65941_write,
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};
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static const struct udevice_id tps65941_ids[] = {
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{ .compatible = "ti,tps659411", .data = TPS659411 },
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{ .compatible = "ti,tps659413", .data = TPS659413 },
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{ }
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};
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U_BOOT_DRIVER(pmic_tps65941) = {
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.name = "tps65941_pmic",
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.id = UCLASS_PMIC,
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.of_match = tps65941_ids,
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.bind = tps65941_bind,
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.ops = &tps65941_ops,
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};
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