mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-24 10:58:52 +09:00
d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <power/rk8xx_pmic.h>
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#include <power/pmic.h>
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "DCDC_REG", .driver = "rk8xx_buck"},
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{ .prefix = "LDO_REG", .driver = "rk8xx_ldo"},
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{ .prefix = "SWITCH_REG", .driver = "rk8xx_switch"},
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{ },
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};
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static int rk8xx_reg_count(struct udevice *dev)
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{
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return RK808_NUM_OF_REGS;
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}
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static int rk8xx_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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int ret;
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ret = dm_i2c_write(dev, reg, buff, len);
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if (ret) {
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debug("write error to device: %p register: %#x!", dev, reg);
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return ret;
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}
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return 0;
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}
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static int rk8xx_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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int ret;
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ret = dm_i2c_read(dev, reg, buff, len);
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if (ret) {
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debug("read error from device: %p register: %#x!", dev, reg);
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return ret;
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}
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return 0;
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}
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#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
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static int rk8xx_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!", __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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#endif
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static int rk8xx_probe(struct udevice *dev)
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{
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struct rk8xx_priv *priv = dev_get_priv(dev);
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uint8_t msb, lsb;
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/* read Chip variant */
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rk8xx_read(dev, ID_MSB, &msb, 1);
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rk8xx_read(dev, ID_LSB, &lsb, 1);
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priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
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return 0;
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}
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static struct dm_pmic_ops rk8xx_ops = {
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.reg_count = rk8xx_reg_count,
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.read = rk8xx_read,
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.write = rk8xx_write,
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};
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static const struct udevice_id rk8xx_ids[] = {
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{ .compatible = "rockchip,rk808" },
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{ .compatible = "rockchip,rk818" },
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{ }
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};
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U_BOOT_DRIVER(pmic_rk8xx) = {
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.name = "rk8xx pmic",
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.id = UCLASS_PMIC,
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.of_match = rk8xx_ids,
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#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
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.bind = rk8xx_bind,
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#endif
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.priv_auto_alloc_size = sizeof(struct rk8xx_priv),
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.probe = rk8xx_probe,
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.ops = &rk8xx_ops,
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};
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