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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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214 lines
7.8 KiB
C
214 lines
7.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2018-2019 Realtek Semiconductor Corporation
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* Author: Cheng-Yu Lee <cylee12@realtek.com>
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*/
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#include <linux/list.h>
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#include <linux/mfd/apw8889.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/suspend.h>
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#include "apw888x-regulator.h"
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/* regulator id */
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enum {
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APW8889_ID_DC1 = 0,
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APW8889_ID_DC2,
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APW8889_ID_DC3,
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APW8889_ID_DC4,
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APW8889_ID_DC5,
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APW8889_ID_DC6,
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APW8889_ID_LDO1,
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APW8889_ID_MAX
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};
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#define APW8889_DESC(_id, _name, _min_uV, _uV_step, _n_volt, _type)\
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{ \
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.desc = { \
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.owner = THIS_MODULE, \
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.type = REGULATOR_VOLTAGE, \
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.ops = &apw888x_regulator_ops, \
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.name = _name, \
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.n_voltages = _n_volt, \
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.min_uV = _min_uV, \
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.uV_step = _uV_step, \
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.id = APW8889_ID_ ## _id, \
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.vsel_reg = APW8889_REG_ ## _id ## _NRMVOLT, \
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.vsel_mask = APW8889_ ## _id ## _NRMVOLT_MASK, \
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.enable_reg = APW8889_REG_ONOFF, \
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.enable_mask = APW8889_ ## _id ## _ON_MASK, \
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.enable_val = APW8889_ ## _id ## _ON_MASK, \
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.of_map_mode = apw888x_regulator_ ## _type ##_of_map_mode, \
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}, \
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.nmode_reg = APW8889_REG_ ## _id ## _MODE, \
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.nmode_mask = APW8889_ ## _id ## _NRMMODE_MASK, \
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.smode_reg = APW8889_REG_ ## _id ## _MODE, \
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.smode_mask = APW8889_ ## _id ## _SLPMODE_MASK, \
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.svsel_reg = APW8889_REG_ ## _id ## _SLPVOLT, \
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.svsel_mask = APW8889_ ## _id ## _SLPVOLT_MASK, \
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.dischg_reg = APW8889_REG_DISCHG, \
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.dischg_mask = APW8889_ ## _id ## _DISCHG_MASK, \
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}
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#define APW8889_DESC_CLP(_id, _name, _min_uV, _uV_step, _n_volt, _type) \
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{ \
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.desc = { \
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.owner = THIS_MODULE, \
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.type = REGULATOR_VOLTAGE, \
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.ops = &apw888x_regulator_ops, \
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.name = _name, \
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.n_voltages = _n_volt, \
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.min_uV = _min_uV, \
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.uV_step = _uV_step, \
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.id = APW8889_ID_ ## _id, \
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.vsel_reg = APW8889_REG_ ## _id ## _NRMVOLT, \
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.vsel_mask = APW8889_ ## _id ## _NRMVOLT_MASK, \
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.enable_reg = APW8889_REG_ONOFF, \
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.enable_mask = APW8889_ ## _id ## _ON_MASK, \
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.enable_val = APW8889_ ## _id ## _ON_MASK, \
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.of_map_mode = apw888x_regulator_ ## _type ##_of_map_mode, \
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}, \
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.nmode_reg = APW8889_REG_ ## _id ## _MODE, \
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.nmode_mask = APW8889_ ## _id ## _NRMMODE_MASK, \
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.smode_reg = APW8889_REG_ ## _id ## _MODE, \
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.smode_mask = APW8889_ ## _id ## _SLPMODE_MASK, \
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.svsel_reg = APW8889_REG_ ## _id ## _SLPVOLT, \
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.svsel_mask = APW8889_ ## _id ## _SLPVOLT_MASK, \
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.dischg_reg = APW8889_REG_DISCHG, \
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.dischg_mask = APW8889_ ## _id ## _DISCHG_MASK, \
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}
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#define APW8889_DESC_FIXED_UV(_id, _name, _fixed_uV) \
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{ \
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.desc = { \
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.owner = THIS_MODULE, \
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.type = REGULATOR_VOLTAGE, \
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.ops = &apw888x_regulator_fixed_uV_ops, \
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.name = _name, \
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.n_voltages = 1, \
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.fixed_uV = _fixed_uV, \
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.id = APW8889_ID_ ## _id, \
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.enable_reg = APW8889_REG_ONOFF, \
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.enable_mask = APW8889_ ## _id ## _ON_MASK, \
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.enable_val = APW8889_ ## _id ## _ON_MASK, \
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.of_map_mode = apw888x_regulator_dc_of_map_mode, \
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}, \
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.nmode_reg = APW8889_REG_ ## _id ## _MODE, \
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.nmode_mask = APW8889_ ## _id ## _NRMMODE_MASK, \
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.smode_reg = APW8889_REG_ ## _id ## _MODE, \
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.smode_mask = APW8889_ ## _id ## _SLPMODE_MASK, \
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.dischg_reg = APW8889_REG_DISCHG, \
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.dischg_mask = APW8889_ ## _id ## _DISCHG_MASK, \
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}
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static struct apw888x_regulator_desc desc[] = {
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[APW8889_ID_DC1] = APW8889_DESC(DC1, "dc1", 2200000, 25000, 64, dc),
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[APW8889_ID_DC2] = APW8889_DESC_CLP(DC2, "dc2", 550000, 12500, 64, dc),
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[APW8889_ID_DC3] = APW8889_DESC_CLP(DC3, "dc3", 550000, 12500, 64, dc),
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[APW8889_ID_DC4] = APW8889_DESC_CLP(DC4, "dc4", 550000, 12500, 64, dc),
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[APW8889_ID_DC5] = APW8889_DESC_FIXED_UV(DC5, "dc5", 0),
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[APW8889_ID_DC6] = APW8889_DESC(DC6, "dc6", 800000, 20000, 64, dc),
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[APW8889_ID_LDO1] = APW8889_DESC(LDO1, "ldo1", 1780000, 40000, 32, ldo),
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};
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static int apw8889_regulator_suspend(struct device *dev)
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{
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struct apw888x_regulator_device *regdev = dev_get_drvdata(dev);
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dev_info(dev, "enter %s\n", __func__);
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apw888x_regulator_device_generic_suspend(regdev);
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dev_info(dev, "exit %s\n", __func__);
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return 0;
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}
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static int apw8889_regulator_resume(struct device *dev)
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{
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struct apw888x_regulator_device *regdev = dev_get_drvdata(dev);
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dev_info(dev, "enter %s\n", __func__);
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apw888x_regulator_device_generic_resume(regdev);
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dev_info(dev, "exit %s\n", __func__);
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return 0;
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}
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static const struct dev_pm_ops apw8889_regulator_pm_ops = {
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.suspend = apw8889_regulator_suspend,
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.resume = apw8889_regulator_resume,
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};
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static int apw8889_regulator_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct apw888x_regulator_device *regdev;
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int i, ret;
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regdev = devm_kzalloc(dev, sizeof(*regdev), GFP_KERNEL);
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if (!regdev)
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return -ENOMEM;
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regdev->regmap = dev_get_regmap(dev->parent, NULL);
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if (!regdev->regmap)
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return -EINVAL;
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regdev->dev = dev;
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INIT_LIST_HEAD(®dev->list);
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regcache_cache_bypass(regdev->regmap, true);
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ret = regmap_write(regdev->regmap, APW8889_REG_DISCHG, 0xfd);
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if (ret)
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dev_warn(dev, "failed to reset dischg: %d\n", ret);
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regcache_cache_bypass(regdev->regmap, false);
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for (i = 0; i < ARRAY_SIZE(desc); i++) {
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ret = apw888x_regulator_register(regdev, &desc[i]);
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if (ret) {
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dev_err(dev, "failed to register %s: %d\n",
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desc[i].desc.name, ret);
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return ret;
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}
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}
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platform_set_drvdata(pdev, regdev);
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return 0;
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}
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static void apw8889_regulator_shutdown(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct apw888x_regulator_device *regdev = platform_get_drvdata(pdev);
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dev_info(dev, "enter %s\n", __func__);
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apw888x_regulator_device_generic_shutdown(regdev);
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dev_info(dev, "exit %s\n", __func__);
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}
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static const struct of_device_id apw8889_regulator_ids[] = {
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{ .compatible = "anpec,apw8889-regulator", },
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{}
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};
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MODULE_DEVICE_TABLE(of, apw8889_regulator_ids);
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static struct platform_driver apw8889_regulator_driver = {
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.driver = {
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.name = "apw8889-regulator",
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.owner = THIS_MODULE,
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.pm = &apw8889_regulator_pm_ops,
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.of_match_table = apw8889_regulator_ids,
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},
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.probe = apw8889_regulator_probe,
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.shutdown = apw8889_regulator_shutdown,
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};
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module_platform_driver(apw8889_regulator_driver);
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MODULE_DESCRIPTION("Anpec APW8889 Regulator Driver");
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MODULE_AUTHOR("Cheng-Yu Lee <cylee12@realtek.com>");
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MODULE_LICENSE("GPL vw");
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