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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2018 NXP
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*/
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#include <common.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 <asm/global_data.h>
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#include <linux/printk.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/bd71837.h>
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DECLARE_GLOBAL_DATA_PTR;
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static const struct pmic_child_info pmic_children_info[] = {
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/* buck */
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{ .prefix = "b", .driver = BD718XX_REGULATOR_DRIVER},
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/* ldo */
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{ .prefix = "l", .driver = BD718XX_REGULATOR_DRIVER},
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{ },
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};
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static int bd71837_reg_count(struct udevice *dev)
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{
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return BD718XX_MAX_REGISTER - 1;
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}
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static int bd71837_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!", 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 bd71837_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!", 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 bd71837_bind(struct udevice *dev)
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{
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int children;
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ofnode regulators_node;
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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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if (CONFIG_IS_ENABLED(PMIC_CHILDREN)) {
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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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}
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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 int bd718x7_probe(struct udevice *dev)
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{
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int ret;
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uint8_t mask = BD718XX_REGLOCK_PWRSEQ | BD718XX_REGLOCK_VREG;
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/* Unlock the PMIC regulator control before probing the children */
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ret = pmic_clrsetbits(dev, BD718XX_REGLOCK, mask, 0);
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if (ret) {
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debug("%s: %s Failed to unlock regulator control\n", __func__,
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dev->name);
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return ret;
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}
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debug("%s: '%s' - BD718x7 PMIC registers unlocked\n", __func__,
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dev->name);
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return 0;
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}
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static struct dm_pmic_ops bd71837_ops = {
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.reg_count = bd71837_reg_count,
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.read = bd71837_read,
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.write = bd71837_write,
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};
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static const struct udevice_id bd71837_ids[] = {
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{ .compatible = "rohm,bd71837", .data = ROHM_CHIP_TYPE_BD71837, },
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{ .compatible = "rohm,bd71847", .data = ROHM_CHIP_TYPE_BD71847, },
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{ }
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};
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U_BOOT_DRIVER(pmic_bd71837) = {
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.name = "bd71837 pmic",
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.id = UCLASS_PMIC,
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.of_match = bd71837_ids,
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.bind = bd71837_bind,
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.probe = bd718x7_probe,
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.ops = &bd71837_ops,
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};
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