diff options
Diffstat (limited to 'drivers/regulator/max8893.c')
| -rw-r--r-- | drivers/regulator/max8893.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/regulator/max8893.c b/drivers/regulator/max8893.c new file mode 100644 index 0000000000..30592425e1 --- /dev/null +++ b/drivers/regulator/max8893.c @@ -0,0 +1,184 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/of.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> + +static const struct regulator_ops max8893_ops = { + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, +}; + +static const struct regulator_desc max8893_regulators[] = { + { + .name = "BUCK", + .supply_name = "in-buck", + .of_match = of_match_ptr("buck"), + .regulators_node = of_match_ptr("regulators"), + .n_voltages = 0x11, + .id = 6, + .ops = &max8893_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .min_uV = 800000, + .uV_step = 100000, + .vsel_reg = 0x4, + .vsel_mask = 0x1f, + .enable_reg = 0x0, + .enable_mask = BIT(7), + }, + { + .name = "LDO1", + .supply_name = "in-ldo1", + .of_match = of_match_ptr("ldo1"), + .regulators_node = of_match_ptr("regulators"), + .n_voltages = 0x12, + .id = 1, + .ops = &max8893_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .min_uV = 1600000, + .uV_step = 100000, + .vsel_reg = 0x5, + .vsel_mask = 0x1f, + .enable_reg = 0x0, + .enable_mask = BIT(5), + }, + { + .name = "LDO2", + .supply_name = "in-ldo2", + .of_match = of_match_ptr("ldo2"), + .regulators_node = of_match_ptr("regulators"), + .n_voltages = 0x16, + .id = 2, + .ops = &max8893_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .min_uV = 1200000, + .uV_step = 100000, + .vsel_reg = 0x6, + .vsel_mask = 0x1f, + .enable_reg = 0x0, + .enable_mask = BIT(4), + }, + { + .name = "LDO3", + .supply_name = "in-ldo3", + .of_match = of_match_ptr("ldo3"), + .regulators_node = of_match_ptr("regulators"), + .n_voltages = 0x12, + .id = 3, + .ops = &max8893_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .min_uV = 1600000, + .uV_step = 100000, + .vsel_reg = 0x7, + .vsel_mask = 0x1f, + .enable_reg = 0x0, + .enable_mask = BIT(3), + }, + { + .name = "LDO4", + .supply_name = "in-ldo4", + .of_match = of_match_ptr("ldo4"), + .regulators_node = of_match_ptr("regulators"), + .n_voltages = 0x1a, + .id = 4, + .ops = &max8893_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .min_uV = 800000, + .uV_step = 100000, + .vsel_reg = 0x8, + .vsel_mask = 0x1f, + .enable_reg = 0x0, + .enable_mask = BIT(2), + }, + { + .name = "LDO5", + .supply_name = "in-ldo5", + .of_match = of_match_ptr("ldo5"), + .regulators_node = of_match_ptr("regulators"), + .n_voltages = 0x1a, + .id = 5, + .ops = &max8893_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .min_uV = 800000, + .uV_step = 100000, + .vsel_reg = 0x9, + .vsel_mask = 0x1f, + .enable_reg = 0x0, + .enable_mask = BIT(1), + } +}; + +static const struct regmap_config max8893_regmap = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int max8893_probe(struct i2c_client *i2c) +{ + int id, ret; + struct regulator_config config = {.dev = &i2c->dev}; + struct regmap *regmap = devm_regmap_init_i2c(i2c, &max8893_regmap); + + if (IS_ERR(regmap)) { + ret = PTR_ERR(regmap); + dev_err(&i2c->dev, "regmap init failed: %d\n", ret); + return ret; + } + + for (id = 0; id < ARRAY_SIZE(max8893_regulators); id++) { + struct regulator_dev *rdev; + rdev = devm_regulator_register(&i2c->dev, + &max8893_regulators[id], + &config); + if (IS_ERR(rdev)) { + ret = PTR_ERR(rdev); + dev_err(&i2c->dev, "failed to register %s: %d\n", + max8893_regulators[id].name, ret); + return ret; + } + } + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id max8893_dt_match[] = { + { .compatible = "maxim,max8893" }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, max8893_dt_match); +#endif + +static const struct i2c_device_id max8893_ids[] = { + { "max8893", 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, max8893_ids); + +static struct i2c_driver max8893_driver = { + .probe = max8893_probe, + .driver = { + .name = "max8893", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, + .of_match_table = of_match_ptr(max8893_dt_match), + }, + .id_table = max8893_ids, +}; + +module_i2c_driver(max8893_driver); + +MODULE_DESCRIPTION("Maxim MAX8893 PMIC driver"); +MODULE_AUTHOR("Sergey Larin <cerg2010cerg2010@mail.ru>"); +MODULE_LICENSE("GPL"); |