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86f162c91f
Add header file for Dialog Semiconductor DA9121 regulator and related devices, mostly autogenerated from the chip design databases, and update driver to replace local defines with those from header. Signed-off-by: Adam Ward <Adam.Ward.opensource@diasemi.com> Link: https://lore.kernel.org/r/3527d84448d1e6ddc0fcb883ae564880f75a6cb0.1606755367.git.Adam.Ward.opensource@diasemi.com Signed-off-by: Mark Brown <broonie@kernel.org>
103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (C) 2020 Axis Communications AB */
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#include <linux/of_device.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/driver.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include "da9121-regulator.h"
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#define DA9121_MIN_MV 300
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#define DA9121_MAX_MV 1900
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#define DA9121_STEP_MV 10
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#define DA9121_MIN_SEL (DA9121_MIN_MV / DA9121_STEP_MV)
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#define DA9121_N_VOLTAGES (((DA9121_MAX_MV - DA9121_MIN_MV) / DA9121_STEP_MV) \
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+ 1 + DA9121_MIN_SEL)
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static const struct regmap_config da9121_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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static const struct regulator_ops da9121_buck_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear,
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};
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static const struct regulator_desc da9121_reg = {
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.name = "da9121",
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.of_match = "buck1",
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.owner = THIS_MODULE,
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.ops = &da9121_buck_ops,
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.type = REGULATOR_VOLTAGE,
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.n_voltages = DA9121_N_VOLTAGES,
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.min_uV = DA9121_MIN_MV * 1000,
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.uV_step = DA9121_STEP_MV * 1000,
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.linear_min_sel = DA9121_MIN_SEL,
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.vsel_reg = DA9121_REG_BUCK_BUCK1_5,
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.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
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.enable_reg = DA9121_REG_BUCK_BUCK1_0,
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.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
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/* Default value of BUCK_BUCK1_0.CH1_SRC_DVC_UP */
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.ramp_delay = 20000,
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/* tBUCK_EN */
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.enable_time = 20,
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};
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static const struct of_device_id da9121_dt_ids[] = {
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{ .compatible = "dlg,da9121", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, da9121_dt_ids);
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static int da9121_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct device *dev = &i2c->dev;
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struct regulator_config config = {};
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struct regulator_dev *rdev;
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struct regmap *regmap;
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regmap = devm_regmap_init_i2c(i2c, &da9121_regmap_config);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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config.dev = &i2c->dev;
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config.of_node = dev->of_node;
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config.regmap = regmap;
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rdev = devm_regulator_register(&i2c->dev, &da9121_reg, &config);
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if (IS_ERR(rdev)) {
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dev_err(&i2c->dev, "Failed to register da9121 regulator\n");
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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 i2c_device_id da9121_i2c_id[] = {
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{ "da9121", 0 },
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{},
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};
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MODULE_DEVICE_TABLE(i2c, da9121_i2c_id);
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static struct i2c_driver da9121_regulator_driver = {
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.driver = {
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.name = "da9121",
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.of_match_table = of_match_ptr(da9121_dt_ids),
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},
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.probe = da9121_i2c_probe,
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.id_table = da9121_i2c_id,
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};
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module_i2c_driver(da9121_regulator_driver);
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MODULE_LICENSE("GPL v2");
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