Blame view
drivers/regulator/max77826-regulator.c
7.94 KB
e7314653d regulator: max778... |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 |
// 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 ", 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! "); 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! "); return PTR_ERR(rdev); } } return max77826_read_device_id(regmap, dev); } |
7bf0a29c3 regulator: max778... |
279 |
static const struct of_device_id __maybe_unused max77826_of_match[] = { |
e7314653d regulator: max778... |
280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 |
{ .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"); |