136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2024 Rockchip Electronics Co., Ltd.
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*/
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#include <common.h>
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#include <asm/gpio.h>
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#include <dm.h>
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#include <dm/lists.h>
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#include <dm/device-internal.h>
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#include <dm/of_access.h>
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#include <dm/pinctrl.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/fp9931.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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{ .prefix = "vcom", .driver = FP9931_VCOM_DRIVER_NAME },
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{ .prefix = "vpos_vneg", .driver = FP9931_VPOS_VNEG_DRIVER_NAME },
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{ },
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};
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static const struct pmic_child_info thermal_child_info[] = {
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{ .prefix = "fp9931_thermal", .driver = FP9931_THERMAL_COMTATIBLE_NAME },
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{ },
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};
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static int fp9931_reg_count(struct udevice *dev)
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{
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return fp9931_REG_MAX;
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}
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static int fp9931_write(struct udevice *dev, uint reg, const uint8_t *buff, 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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pr_err("fp9931 failed to write register: %#x, ret:%d\n", reg, ret);
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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 fp9931_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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pr_err("fp9931 failed to write register: %#x, ret:%d\n", reg, ret);
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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 pmic_fp9931_probe(struct udevice *dev)
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{
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struct fp9931_plat_data *data = dev_get_platdata(dev);
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uint8_t val;
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int ret;
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ret = gpio_request_list_by_name(dev, "power-gpios", data->power_gpio, 4,
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GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
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if (ret < 0)
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dev_warn(dev, "fp9931 failed to get power gpios:%d\n", ret);
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data->num_power_gpio = ret;
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ret = gpio_request_by_name(dev, "enable-gpios", 0, &data->enable_gpio, GPIOD_IS_OUT);
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if (ret) {
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dev_err(dev, "fp9931 failed to get enable gpios:%d\n", ret);
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return ret;
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}
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/* After power on, fp9931 requires 1ms delay time to enter active mode */
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udelay(1100);
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/* check is device i2c present */
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ret = dm_i2c_read(dev, FP9931_VCOM_SETTING, &val, 1);
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if (ret) {
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dev_warn(dev, "fp9931 i2c not present: %d\n", ret);
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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 pmic_fp9931_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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dev_err(dev, "Regulators subnode not found!");
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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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dev_err(dev, "Failed to bind fp9931 regulator\n");
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children = pmic_bind_children(dev, dev->node, thermal_child_info);
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if (!children)
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dev_err(dev, "Failed to bind fp9931 thermal\n");
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return 0;
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}
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static struct dm_pmic_ops fp9931_ops = {
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.reg_count = fp9931_reg_count,
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.read = fp9931_read,
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.write = fp9931_write,
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};
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static const struct udevice_id pmic_fp9931_of_match[] = {
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{ .compatible = "fitipower,fp9931-pmic" },
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{ }
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};
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U_BOOT_DRIVER(pmic_fp9931) = {
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.name = "pmic_fp9931",
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.id = UCLASS_PMIC,
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.of_match = pmic_fp9931_of_match,
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.probe = pmic_fp9931_probe,
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.ops = &fp9931_ops,
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.bind = pmic_fp9931_bind,
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.platdata_auto_alloc_size = sizeof(struct fp9931_plat_data),
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};
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