| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Iskren Chernev | 960 | 100.00% | 1 | 100.00% |
| Total | 960 | 1 |
// SPDX-License-Identifier: GPL-2.0-or-later // // max77826-regulator.c - regulator driver for Maxim MAX77826 // // Author: Iskren Chernev <iskren.chernev@gmail.com> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/err.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/of_regulator.h> #include <linux/i2c.h> #include <linux/regmap.h> enum max77826_registers { MAX77826_REG_INT_SRC = 0x00, MAX77826_REG_SYS_INT, MAX77826_REG_INT1, MAX77826_REG_INT2, MAX77826_REG_BB_INT, MAX77826_REG_INT_SRC_M, MAX77826_REG_TOPSYS_INT_M, MAX77826_REG_INT1_M, MAX77826_REG_INT2_M, MAX77826_REG_BB_INT_M, MAX77826_REG_TOPSYS_STAT, MAX77826_REG_STAT1, MAX77826_REG_STAT2, MAX77826_REG_BB_STAT, /* 0x0E - 0x0F: Reserved */ MAX77826_REG_LDO_OPMD1 = 0x10, MAX77826_REG_LDO_OPMD2, MAX77826_REG_LDO_OPMD3, MAX77826_REG_LDO_OPMD4, MAX77826_REG_B_BB_OPMD, /* 0x15 - 0x1F: Reserved */ MAX77826_REG_LDO1_CFG = 0x20, MAX77826_REG_LDO2_CFG, MAX77826_REG_LDO3_CFG, MAX77826_REG_LDO4_CFG, MAX77826_REG_LDO5_CFG, MAX77826_REG_LDO6_CFG, MAX77826_REG_LDO7_CFG, MAX77826_REG_LDO8_CFG, MAX77826_REG_LDO9_CFG, MAX77826_REG_LDO10_CFG, MAX77826_REG_LDO11_CFG, MAX77826_REG_LDO12_CFG, MAX77826_REG_LDO13_CFG, MAX77826_REG_LDO14_CFG, MAX77826_REG_LDO15_CFG, /* 0x2F: Reserved */ MAX77826_REG_BUCK_CFG = 0x30, MAX77826_REG_BUCK_VOUT, MAX77826_REG_BB_CFG, MAX77826_REG_BB_VOUT, /* 0x34 - 0x3F: Reserved */ MAX77826_REG_BUCK_SS_FREQ = 0x40, MAX77826_REG_UVLO_FALL, /* 0x42 - 0xCE: Reserved */ MAX77826_REG_DEVICE_ID = 0xCF, }; enum max77826_regulators { MAX77826_LDO1 = 0, MAX77826_LDO2, MAX77826_LDO3, MAX77826_LDO4, MAX77826_LDO5, MAX77826_LDO6, MAX77826_LDO7, MAX77826_LDO8, MAX77826_LDO9, MAX77826_LDO10, MAX77826_LDO11, MAX77826_LDO12, MAX77826_LDO13, MAX77826_LDO14, MAX77826_LDO15, MAX77826_BUCK, MAX77826_BUCKBOOST, MAX77826_MAX_REGULATORS, }; #define MAX77826_MASK_LDO 0x7f #define MAX77826_MASK_BUCK 0xff #define MAX77826_MASK_BUCKBOOST 0x7f #define MAX77826_BUCK_RAMP_DELAY 12500 /* values in mV */ /* for LDO1-3 */ #define MAX77826_NMOS_LDO_VOLT_MIN 600000 #define MAX77826_NMOS_LDO_VOLT_MAX 2187500 #define MAX77826_NMOS_LDO_VOLT_STEP 12500 /* for LDO4-15 */ #define MAX77826_PMOS_LDO_VOLT_MIN 800000 #define MAX77826_PMOS_LDO_VOLT_MAX 3975000 #define MAX77826_PMOS_LDO_VOLT_STEP 25000 /* for BUCK */ #define MAX77826_BUCK_VOLT_MIN 500000 #define MAX77826_BUCK_VOLT_MAX 1800000 #define MAX77826_BUCK_VOLT_STEP 6250 /* for BUCKBOOST */ #define MAX77826_BUCKBOOST_VOLT_MIN 2600000 #define MAX77826_BUCKBOOST_VOLT_MAX 4187500 #define MAX77826_BUCKBOOST_VOLT_STEP 12500 #define MAX77826_VOLT_RANGE(_type) \ ((MAX77826_ ## _type ## _VOLT_MAX - \ MAX77826_ ## _type ## _VOLT_MIN) / \ MAX77826_ ## _type ## _VOLT_STEP + 1) #define MAX77826_LDO(_id, _type) \ [MAX77826_LDO ## _id] = { \ .id = MAX77826_LDO ## _id, \ .name = "LDO"#_id, \ .of_match = of_match_ptr("LDO"#_id), \ .regulators_node = "regulators", \ .ops = &max77826_most_ops, \ .min_uV = MAX77826_ ## _type ## _LDO_VOLT_MIN, \ .uV_step = MAX77826_ ## _type ## _LDO_VOLT_STEP, \ .n_voltages = MAX77826_VOLT_RANGE(_type ## _LDO), \ .enable_reg = MAX77826_REG_LDO_OPMD1 + (_id - 1) / 4, \ .enable_mask = BIT(((_id - 1) % 4) * 2 + 1), \ .vsel_reg = MAX77826_REG_LDO1_CFG + (_id - 1), \ .vsel_mask = MAX77826_MASK_LDO, \ .owner = THIS_MODULE, \ } #define MAX77826_BUCK(_idx, _id, _ops) \ [MAX77826_ ## _id] = { \ .id = MAX77826_ ## _id, \ .name = #_id, \ .of_match = of_match_ptr(#_id), \ .regulators_node = "regulators", \ .ops = &_ops, \ .min_uV = MAX77826_ ## _id ## _VOLT_MIN, \ .uV_step = MAX77826_ ## _id ## _VOLT_STEP, \ .n_voltages = MAX77826_VOLT_RANGE(_id), \ .enable_reg = MAX77826_REG_B_BB_OPMD, \ .enable_mask = BIT(_idx * 2 + 1), \ .vsel_reg = MAX77826_REG_BUCK_VOUT + _idx * 2, \ .vsel_mask = MAX77826_MASK_ ## _id, \ .owner = THIS_MODULE, \ } struct max77826_regulator_info { struct regmap *regmap; struct regulator_desc *rdesc; }; static const struct regmap_config max77826_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = MAX77826_REG_DEVICE_ID, }; static int max77826_set_voltage_time_sel(struct regulator_dev *, unsigned int old_selector, unsigned int new_selector); static const struct regulator_ops max77826_most_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, }; static const struct regulator_ops max77826_buck_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_linear, .map_voltage = regulator_map_voltage_linear, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_voltage_time_sel = max77826_set_voltage_time_sel, }; static struct regulator_desc max77826_regulators_desc[] = { MAX77826_LDO(1, NMOS), MAX77826_LDO(2, NMOS), MAX77826_LDO(3, NMOS), MAX77826_LDO(4, PMOS), MAX77826_LDO(5, PMOS), MAX77826_LDO(6, PMOS), MAX77826_LDO(7, PMOS), MAX77826_LDO(8, PMOS), MAX77826_LDO(9, PMOS), MAX77826_LDO(10, PMOS), MAX77826_LDO(11, PMOS), MAX77826_LDO(12, PMOS), MAX77826_LDO(13, PMOS), MAX77826_LDO(14, PMOS), MAX77826_LDO(15, PMOS), MAX77826_BUCK(0, BUCK, max77826_buck_ops), MAX77826_BUCK(1, BUCKBOOST, max77826_most_ops), }; static int max77826_set_voltage_time_sel(struct regulator_dev *rdev, unsigned int old_selector, unsigned int new_selector) { if (new_selector > old_selector) { return DIV_ROUND_UP(MAX77826_BUCK_VOLT_STEP * (new_selector - old_selector), MAX77826_BUCK_RAMP_DELAY); } return 0; } static int max77826_read_device_id(struct regmap *regmap, struct device *dev) { unsigned int device_id; int res; res = regmap_read(regmap, MAX77826_REG_DEVICE_ID, &device_id); if (!res) dev_dbg(dev, "DEVICE_ID: 0x%x\n", device_id); return res; } static int max77826_i2c_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct max77826_regulator_info *info; struct regulator_config config = {}; struct regulator_dev *rdev; struct regmap *regmap; int i; info = devm_kzalloc(dev, sizeof(struct max77826_regulator_info), GFP_KERNEL); if (!info) return -ENOMEM; info->rdesc = max77826_regulators_desc; regmap = devm_regmap_init_i2c(client, &max77826_regmap_config); if (IS_ERR(regmap)) { dev_err(dev, "Failed to allocate regmap!\n"); return PTR_ERR(regmap); } info->regmap = regmap; i2c_set_clientdata(client, info); config.dev = dev; config.regmap = regmap; config.driver_data = info; for (i = 0; i < MAX77826_MAX_REGULATORS; i++) { rdev = devm_regulator_register(dev, &max77826_regulators_desc[i], &config); if (IS_ERR(rdev)) { dev_err(dev, "Failed to register regulator!\n"); return PTR_ERR(rdev); } } return max77826_read_device_id(regmap, dev); } static const struct of_device_id max77826_of_match[] = { { .compatible = "maxim,max77826" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, max77826_of_match); static const struct i2c_device_id max77826_id[] = { { "max77826-regulator" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, max77826_id); static struct i2c_driver max77826_regulator_driver = { .driver = { .name = "max77826", .of_match_table = of_match_ptr(max77826_of_match), }, .probe_new = max77826_i2c_probe, .id_table = max77826_id, }; module_i2c_driver(max77826_regulator_driver); MODULE_AUTHOR("Iskren Chernev <iskren.chernev@gmail.com>"); MODULE_DESCRIPTION("MAX77826 PMIC regulator driver"); MODULE_LICENSE("GPL");
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