mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-09-18 23:09:29 +02:00
Uwe Kleine-König (The Capable Hub)
8e74b2db58
While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct i2c_device_id that replaces .driver_data by an anonymous union. While touching all these arrays, unify usage of whitespace and commas. This patch doesn't modify the compiled arrays, only their representation in source form benefits. The former was confirmed with x86 and arm64 builds. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Link: https://patch.msgid.link/2e83a9747ac2c92db8f91fd0e0eb311c4efe8e73.1782827697.git.u.kleine-koenig@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2023 Analog Devices, Inc.
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* ADI regulator driver for MAX77503.
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*/
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#include <linux/i2c.h>
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#include <linux/module.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/regulator/of_regulator.h>
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#include <linux/util_macros.h>
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#define MAX77503_REG_CFG 0x00
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#define MAX77503_REG_VOUT 0x01
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#define MAX77503_BIT_EN BIT(0)
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#define MAX77503_BIT_CURR_LIM BIT(3)
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#define MAX77503_BIT_ADEN BIT(6)
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#define MAX77503_BITS_SOFT_START GENMASK(5, 4)
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#define MAX77503_BITS_MX_VOUT GENMASK(7, 0)
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#define MAX77503_AD_ENABLED 0x1
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#define MAX77503_AD_DISABLED 0x0
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static const struct regmap_config max77503_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = 0x2,
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};
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static const struct regulator_ops max77503_buck_ops = {
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.list_voltage = regulator_list_voltage_linear_range,
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.map_voltage = regulator_map_voltage_ascend,
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_current_limit = regulator_get_current_limit_regmap,
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.set_current_limit = regulator_set_current_limit_regmap,
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.set_active_discharge = regulator_set_active_discharge_regmap,
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.set_soft_start = regulator_set_soft_start_regmap,
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};
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static const struct linear_range max77503_buck_ranges[] = {
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REGULATOR_LINEAR_RANGE(800000, 0x00, 0x54, 50000)
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};
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static const unsigned int max77503_current_limit_table[] = {
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500000, 2000000
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};
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static const struct regulator_desc max77503_regulators_desc = {
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.name = "max77503",
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.enable_reg = MAX77503_REG_CFG,
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.enable_mask = MAX77503_BIT_EN,
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.ops = &max77503_buck_ops,
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.type = REGULATOR_VOLTAGE,
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.linear_ranges = max77503_buck_ranges,
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.n_linear_ranges = ARRAY_SIZE(max77503_buck_ranges),
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.vsel_reg = MAX77503_REG_VOUT,
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.vsel_mask = MAX77503_BITS_MX_VOUT,
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.soft_start_reg = MAX77503_REG_CFG,
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.soft_start_mask = MAX77503_BITS_SOFT_START,
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.active_discharge_reg = MAX77503_REG_CFG,
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.active_discharge_mask = MAX77503_BIT_ADEN,
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.active_discharge_off = MAX77503_AD_DISABLED,
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.active_discharge_on = MAX77503_AD_ENABLED,
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.csel_reg = MAX77503_REG_CFG,
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.csel_mask = MAX77503_BIT_CURR_LIM,
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.curr_table = max77503_current_limit_table,
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.n_current_limits = ARRAY_SIZE(max77503_current_limit_table),
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.owner = THIS_MODULE,
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};
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static int max77503_regulator_probe(struct i2c_client *client)
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{
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struct device *dev = &client->dev;
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struct regulator_config config = {};
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struct regulator_dev *rdev;
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config.dev = dev;
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config.of_node = dev->of_node;
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config.regmap = devm_regmap_init_i2c(client, &max77503_regmap_config);
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if (IS_ERR(config.regmap)) {
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dev_err(dev, "Failed to init regmap");
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return PTR_ERR(config.regmap);
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}
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rdev = devm_regulator_register(dev, &max77503_regulators_desc, &config);
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if (IS_ERR(rdev)) {
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dev_err(dev, "Failed to register regulator MAX77503");
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return PTR_ERR(rdev);
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}
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return 0;
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}
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static const struct of_device_id of_max77503_match_tbl[] = {
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{ .compatible = "adi,max77503", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, of_max77503_match_tbl);
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static const struct i2c_device_id max77503_regulator_id[] = {
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{ .name = "max77503" },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max77503_regulator_id);
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static struct i2c_driver max77503_regulator_driver = {
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.driver = {
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.name = "max77503",
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.of_match_table = of_max77503_match_tbl
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},
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.probe = max77503_regulator_probe,
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.id_table = max77503_regulator_id,
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};
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module_i2c_driver(max77503_regulator_driver);
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MODULE_AUTHOR("Gokhan Celik <Gokhan.Celik@analog.com>");
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MODULE_DESCRIPTION("MAX77503 regulator driver");
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MODULE_LICENSE("GPL");
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