mirror of
https://github.com/AsahiLinux/u-boot
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93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Freescale Semiconductor, Inc
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* Peng Fan <Peng.Fan@freescale.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/pfuze100_pmic.h>
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#include <power/pfuze3000_pmic.h>
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static const struct pmic_child_info pmic_children_info[] = {
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/* sw[x], swbst */
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{ .prefix = "s", .driver = PFUZE100_REGULATOR_DRIVER },
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/* vgen[x], vsnvs, vcc, v33, vcc_sd */
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{ .prefix = "v", .driver = PFUZE100_REGULATOR_DRIVER },
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{ },
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};
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static int pfuze100_reg_count(struct udevice *dev)
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{
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return dev->driver_data == PFUZE3000 ? PFUZE3000_NUM_OF_REGS : PFUZE100_NUM_OF_REGS;
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}
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static int pfuze100_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 pfuze100_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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debug("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 pfuze100_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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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 pfuze100_ops = {
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.reg_count = pfuze100_reg_count,
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.read = pfuze100_read,
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.write = pfuze100_write,
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};
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static const struct udevice_id pfuze100_ids[] = {
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{ .compatible = "fsl,pfuze100", .data = PFUZE100, },
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{ .compatible = "fsl,pfuze200", .data = PFUZE200, },
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{ .compatible = "fsl,pfuze3000", .data = PFUZE3000, },
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{ }
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};
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U_BOOT_DRIVER(pmic_pfuze100) = {
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.name = "pfuze100 pmic",
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.id = UCLASS_PMIC,
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.of_match = pfuze100_ids,
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.bind = pfuze100_bind,
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.ops = &pfuze100_ops,
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};
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