ChiYuan Huang | 760423d | 2022-03-09 16:01:43 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | |
| 3 | #include <dt-bindings/regulator/richtek,rt5190a-regulator.h> |
| 4 | #include <linux/bits.h> |
| 5 | #include <linux/i2c.h> |
| 6 | #include <linux/interrupt.h> |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/of.h> |
| 10 | #include <linux/property.h> |
| 11 | #include <linux/regmap.h> |
| 12 | #include <linux/regulator/driver.h> |
| 13 | #include <linux/regulator/machine.h> |
| 14 | #include <linux/regulator/of_regulator.h> |
| 15 | |
| 16 | #define RT5190A_REG_MANUFACTURE 0x00 |
| 17 | #define RT5190A_REG_BUCK2VSEL 0x04 |
| 18 | #define RT5190A_REG_BUCK3VSEL 0x05 |
| 19 | #define RT5190A_REG_DCDCCNTL 0x06 |
| 20 | #define RT5190A_REG_ENABLE 0x07 |
| 21 | #define RT5190A_REG_DISCHARGE 0x09 |
| 22 | #define RT5190A_REG_PROTMODE 0x0A |
| 23 | #define RT5190A_REG_MUTECNTL 0x0B |
| 24 | #define RT5190A_REG_PGSTAT 0x0F |
| 25 | #define RT5190A_REG_OVINT 0x10 |
| 26 | #define RT5190A_REG_HOTDIEMASK 0x17 |
| 27 | |
| 28 | #define RT5190A_VSEL_MASK GENMASK(6, 0) |
| 29 | #define RT5190A_RID_BITMASK(rid) BIT(rid + 1) |
| 30 | #define RT5190A_BUCK1_DISCHG_MASK GENMASK(1, 0) |
| 31 | #define RT5190A_BUCK1_DISCHG_ONVAL 0x01 |
| 32 | #define RT5190A_OVERVOLT_MASK GENMASK(7, 0) |
| 33 | #define RT5190A_UNDERVOLT_MASK GENMASK(15, 8) |
| 34 | #define RT5190A_CH234OT_MASK BIT(29) |
| 35 | #define RT5190A_CHIPOT_MASK BIT(28) |
| 36 | |
| 37 | #define RT5190A_BUCK23_MINUV 600000 |
| 38 | #define RT5190A_BUCK23_MAXUV 1400000 |
| 39 | #define RT5190A_BUCK23_STEPUV 10000 |
| 40 | #define RT5190A_BUCK23_STEPNUM ((1400000 - 600000) / 10000 + 1) |
| 41 | |
| 42 | enum { |
| 43 | RT5190A_IDX_BUCK1 = 0, |
| 44 | RT5190A_IDX_BUCK2, |
| 45 | RT5190A_IDX_BUCK3, |
| 46 | RT5190A_IDX_BUCK4, |
| 47 | RT5190A_IDX_LDO, |
| 48 | RT5190A_MAX_IDX |
| 49 | }; |
| 50 | |
| 51 | struct rt5190a_priv { |
| 52 | struct device *dev; |
| 53 | struct regmap *regmap; |
| 54 | struct regulator_desc rdesc[RT5190A_MAX_IDX]; |
| 55 | struct regulator_dev *rdev[RT5190A_MAX_IDX]; |
| 56 | }; |
| 57 | |
| 58 | static int rt5190a_get_error_flags(struct regulator_dev *rdev, |
| 59 | unsigned int *flags) |
| 60 | { |
| 61 | struct regmap *regmap = rdev_get_regmap(rdev); |
| 62 | int rid = rdev_get_id(rdev); |
| 63 | unsigned int pgood_stat; |
| 64 | int ret; |
| 65 | |
| 66 | ret = regmap_read(regmap, RT5190A_REG_PGSTAT, &pgood_stat); |
| 67 | if (ret) |
| 68 | return ret; |
| 69 | |
| 70 | if (!(pgood_stat & RT5190A_RID_BITMASK(rid))) |
| 71 | *flags = REGULATOR_ERROR_FAIL; |
| 72 | else |
| 73 | *flags = 0; |
| 74 | |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | static int rt5190a_fixed_buck_set_mode(struct regulator_dev *rdev, |
| 79 | unsigned int mode) |
| 80 | { |
| 81 | struct regmap *regmap = rdev_get_regmap(rdev); |
| 82 | int rid = rdev_get_id(rdev); |
| 83 | unsigned int mask = RT5190A_RID_BITMASK(rid), val; |
| 84 | |
| 85 | switch (mode) { |
| 86 | case REGULATOR_MODE_FAST: |
| 87 | val = mask; |
| 88 | break; |
| 89 | case REGULATOR_MODE_NORMAL: |
| 90 | val = 0; |
| 91 | break; |
| 92 | default: |
| 93 | return -EINVAL; |
| 94 | } |
| 95 | |
| 96 | return regmap_update_bits(regmap, RT5190A_REG_DCDCCNTL, mask, val); |
| 97 | } |
| 98 | |
| 99 | static unsigned int rt5190a_fixed_buck_get_mode(struct regulator_dev *rdev) |
| 100 | { |
| 101 | struct regmap *regmap = rdev_get_regmap(rdev); |
| 102 | int rid = rdev_get_id(rdev); |
| 103 | unsigned int val; |
| 104 | int ret; |
| 105 | |
| 106 | ret = regmap_read(regmap, RT5190A_REG_DCDCCNTL, &val); |
| 107 | if (ret) { |
| 108 | dev_err(&rdev->dev, "Failed to get mode [%d]\n", ret); |
| 109 | return ret; |
| 110 | } |
| 111 | |
| 112 | if (val & RT5190A_RID_BITMASK(rid)) |
| 113 | return REGULATOR_MODE_FAST; |
| 114 | |
| 115 | return REGULATOR_MODE_NORMAL; |
| 116 | } |
| 117 | |
| 118 | static const struct regulator_ops rt5190a_ranged_buck_ops = { |
| 119 | .enable = regulator_enable_regmap, |
| 120 | .disable = regulator_disable_regmap, |
| 121 | .is_enabled = regulator_is_enabled_regmap, |
| 122 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 123 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 124 | .list_voltage = regulator_list_voltage_linear, |
| 125 | .set_active_discharge = regulator_set_active_discharge_regmap, |
| 126 | .get_error_flags = rt5190a_get_error_flags, |
| 127 | }; |
| 128 | |
| 129 | static const struct regulator_ops rt5190a_fixed_buck_ops = { |
| 130 | .enable = regulator_enable_regmap, |
| 131 | .disable = regulator_disable_regmap, |
| 132 | .is_enabled = regulator_is_enabled_regmap, |
| 133 | .set_active_discharge = regulator_set_active_discharge_regmap, |
| 134 | .set_mode = rt5190a_fixed_buck_set_mode, |
| 135 | .get_mode = rt5190a_fixed_buck_get_mode, |
| 136 | .get_error_flags = rt5190a_get_error_flags, |
| 137 | }; |
| 138 | |
| 139 | static const struct regulator_ops rt5190a_fixed_ldo_ops = { |
| 140 | .enable = regulator_enable_regmap, |
| 141 | .disable = regulator_disable_regmap, |
| 142 | .is_enabled = regulator_is_enabled_regmap, |
| 143 | .set_active_discharge = regulator_set_active_discharge_regmap, |
| 144 | .get_error_flags = rt5190a_get_error_flags, |
| 145 | }; |
| 146 | |
| 147 | static irqreturn_t rt5190a_irq_handler(int irq, void *data) |
| 148 | { |
| 149 | struct rt5190a_priv *priv = data; |
| 150 | __le32 raws; |
| 151 | unsigned int events, fields; |
| 152 | static const struct { |
| 153 | unsigned int bitmask; |
| 154 | unsigned int report; |
| 155 | } event_tbl[] = { |
| 156 | { RT5190A_OVERVOLT_MASK, REGULATOR_ERROR_REGULATION_OUT }, |
| 157 | { RT5190A_UNDERVOLT_MASK, REGULATOR_ERROR_UNDER_VOLTAGE } |
| 158 | }; |
| 159 | int i, j, ret; |
| 160 | |
| 161 | ret = regmap_raw_read(priv->regmap, RT5190A_REG_OVINT, &raws, |
| 162 | sizeof(raws)); |
| 163 | if (ret) { |
| 164 | dev_err(priv->dev, "Failed to read events\n"); |
| 165 | return IRQ_NONE; |
| 166 | } |
| 167 | |
| 168 | events = le32_to_cpu(raws); |
| 169 | |
| 170 | ret = regmap_raw_write(priv->regmap, RT5190A_REG_OVINT, &raws, |
| 171 | sizeof(raws)); |
| 172 | if (ret) |
| 173 | dev_err(priv->dev, "Failed to write-clear events\n"); |
| 174 | |
| 175 | /* Handle OV,UV events */ |
| 176 | for (i = 0; i < ARRAY_SIZE(event_tbl); i++) { |
| 177 | fields = events & event_tbl[i].bitmask; |
| 178 | fields >>= ffs(event_tbl[i].bitmask) - 1; |
| 179 | |
| 180 | for (j = 0; j < RT5190A_MAX_IDX; j++) { |
| 181 | if (!(fields & RT5190A_RID_BITMASK(j))) |
| 182 | continue; |
| 183 | |
| 184 | regulator_notifier_call_chain(priv->rdev[j], |
| 185 | event_tbl[i].report, |
| 186 | NULL); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | /* Handle CH234 OT event */ |
| 191 | if (events & RT5190A_CH234OT_MASK) { |
| 192 | for (j = RT5190A_IDX_BUCK2; j < RT5190A_IDX_LDO; j++) { |
| 193 | regulator_notifier_call_chain(priv->rdev[j], |
| 194 | REGULATOR_ERROR_OVER_TEMP, |
| 195 | NULL); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | /* Warning if CHIP OT occur */ |
| 200 | if (events & RT5190A_CHIPOT_MASK) |
| 201 | dev_warn(priv->dev, "CHIP overheat\n"); |
| 202 | |
| 203 | return IRQ_HANDLED; |
| 204 | } |
| 205 | |
| 206 | static unsigned int rt5190a_of_map_mode(unsigned int mode) |
| 207 | { |
| 208 | switch (mode) { |
| 209 | case RT5190A_OPMODE_AUTO: |
| 210 | return REGULATOR_MODE_NORMAL; |
| 211 | case RT5190A_OPMODE_FPWM: |
| 212 | return REGULATOR_MODE_FAST; |
| 213 | default: |
| 214 | return REGULATOR_MODE_INVALID; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | static int rt5190a_of_parse_cb(struct rt5190a_priv *priv, int rid, |
| 219 | struct of_regulator_match *match) |
| 220 | { |
| 221 | struct regulator_desc *desc = priv->rdesc + rid; |
| 222 | struct regulator_init_data *init_data = match->init_data; |
| 223 | struct device_node *np = match->of_node; |
| 224 | bool latchup_enable; |
| 225 | unsigned int mask = RT5190A_RID_BITMASK(rid), val; |
| 226 | |
ChiYuan Huang | 5f7202d | 2022-06-02 13:44:06 +0800 | [diff] [blame] | 227 | if (!init_data) |
| 228 | return 0; |
| 229 | |
ChiYuan Huang | 760423d | 2022-03-09 16:01:43 +0800 | [diff] [blame] | 230 | switch (rid) { |
| 231 | case RT5190A_IDX_BUCK1: |
| 232 | case RT5190A_IDX_BUCK4: |
| 233 | case RT5190A_IDX_LDO: |
| 234 | init_data->constraints.apply_uV = 0; |
| 235 | |
| 236 | if (init_data->constraints.min_uV == |
| 237 | init_data->constraints.max_uV) |
| 238 | desc->fixed_uV = init_data->constraints.min_uV; |
| 239 | else { |
| 240 | dev_err(priv->dev, |
| 241 | "Variable voltage for fixed regulator\n"); |
| 242 | return -EINVAL; |
| 243 | } |
| 244 | break; |
| 245 | default: |
| 246 | break; |
| 247 | } |
| 248 | |
| 249 | latchup_enable = of_property_read_bool(np, "richtek,latchup-enable"); |
| 250 | |
| 251 | /* latchup: 0, default hiccup: 1 */ |
| 252 | val = !latchup_enable ? mask : 0; |
| 253 | |
| 254 | return regmap_update_bits(priv->regmap, RT5190A_REG_PROTMODE, mask, val); |
| 255 | } |
| 256 | |
| 257 | static void rt5190a_fillin_regulator_desc(struct regulator_desc *desc, int rid) |
| 258 | { |
| 259 | static const char * const regu_name[] = { "buck1", "buck2", |
| 260 | "buck3", "buck4", |
| 261 | "ldo" }; |
| 262 | static const char * const supply[] = { NULL, "vin2", "vin3", "vin4", |
| 263 | "vinldo" }; |
| 264 | |
| 265 | desc->name = regu_name[rid]; |
| 266 | desc->supply_name = supply[rid]; |
| 267 | desc->owner = THIS_MODULE; |
| 268 | desc->type = REGULATOR_VOLTAGE; |
| 269 | desc->id = rid; |
| 270 | desc->enable_reg = RT5190A_REG_ENABLE; |
| 271 | desc->enable_mask = RT5190A_RID_BITMASK(rid); |
| 272 | desc->active_discharge_reg = RT5190A_REG_DISCHARGE; |
| 273 | desc->active_discharge_mask = RT5190A_RID_BITMASK(rid); |
| 274 | desc->active_discharge_on = RT5190A_RID_BITMASK(rid); |
| 275 | |
| 276 | switch (rid) { |
| 277 | case RT5190A_IDX_BUCK1: |
| 278 | desc->active_discharge_mask = RT5190A_BUCK1_DISCHG_MASK; |
| 279 | desc->active_discharge_on = RT5190A_BUCK1_DISCHG_ONVAL; |
| 280 | desc->n_voltages = 1; |
| 281 | desc->ops = &rt5190a_fixed_buck_ops; |
| 282 | desc->of_map_mode = rt5190a_of_map_mode; |
| 283 | break; |
| 284 | case RT5190A_IDX_BUCK2: |
| 285 | desc->vsel_reg = RT5190A_REG_BUCK2VSEL; |
| 286 | desc->vsel_mask = RT5190A_VSEL_MASK; |
| 287 | desc->min_uV = RT5190A_BUCK23_MINUV; |
| 288 | desc->uV_step = RT5190A_BUCK23_STEPUV; |
| 289 | desc->n_voltages = RT5190A_BUCK23_STEPNUM; |
| 290 | desc->ops = &rt5190a_ranged_buck_ops; |
| 291 | break; |
| 292 | case RT5190A_IDX_BUCK3: |
| 293 | desc->vsel_reg = RT5190A_REG_BUCK3VSEL; |
| 294 | desc->vsel_mask = RT5190A_VSEL_MASK; |
| 295 | desc->min_uV = RT5190A_BUCK23_MINUV; |
| 296 | desc->uV_step = RT5190A_BUCK23_STEPUV; |
| 297 | desc->n_voltages = RT5190A_BUCK23_STEPNUM; |
| 298 | desc->ops = &rt5190a_ranged_buck_ops; |
| 299 | break; |
| 300 | case RT5190A_IDX_BUCK4: |
| 301 | desc->n_voltages = 1; |
| 302 | desc->ops = &rt5190a_fixed_buck_ops; |
| 303 | desc->of_map_mode = rt5190a_of_map_mode; |
| 304 | break; |
| 305 | case RT5190A_IDX_LDO: |
| 306 | desc->n_voltages = 1; |
| 307 | desc->ops = &rt5190a_fixed_ldo_ops; |
| 308 | break; |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | static struct of_regulator_match rt5190a_regulator_match[] = { |
| 313 | { .name = "buck1", }, |
| 314 | { .name = "buck2", }, |
| 315 | { .name = "buck3", }, |
| 316 | { .name = "buck4", }, |
| 317 | { .name = "ldo", } |
| 318 | }; |
| 319 | |
| 320 | static int rt5190a_parse_regulator_dt_data(struct rt5190a_priv *priv) |
| 321 | { |
| 322 | struct device_node *regulator_np; |
| 323 | struct regulator_desc *reg_desc; |
| 324 | struct of_regulator_match *match; |
| 325 | int i, ret; |
| 326 | |
| 327 | for (i = 0; i < RT5190A_MAX_IDX; i++) { |
| 328 | reg_desc = priv->rdesc + i; |
| 329 | match = rt5190a_regulator_match + i; |
| 330 | |
| 331 | rt5190a_fillin_regulator_desc(reg_desc, i); |
| 332 | |
| 333 | match->desc = reg_desc; |
| 334 | } |
| 335 | |
| 336 | regulator_np = of_get_child_by_name(priv->dev->of_node, "regulators"); |
| 337 | if (!regulator_np) { |
| 338 | dev_err(priv->dev, "Could not find 'regulators' node\n"); |
| 339 | return -ENODEV; |
| 340 | } |
| 341 | |
| 342 | ret = of_regulator_match(priv->dev, regulator_np, |
| 343 | rt5190a_regulator_match, |
| 344 | ARRAY_SIZE(rt5190a_regulator_match)); |
| 345 | |
| 346 | of_node_put(regulator_np); |
| 347 | |
| 348 | if (ret < 0) { |
| 349 | dev_err(priv->dev, |
| 350 | "Error parsing regulator init data: %d\n", ret); |
| 351 | return ret; |
| 352 | } |
| 353 | |
| 354 | for (i = 0; i < RT5190A_MAX_IDX; i++) { |
| 355 | match = rt5190a_regulator_match + i; |
| 356 | |
| 357 | ret = rt5190a_of_parse_cb(priv, i, match); |
| 358 | if (ret) { |
| 359 | dev_err(priv->dev, "Failed in [%d] of_parse_cb\n", i); |
| 360 | return ret; |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | static const struct reg_sequence rt5190a_init_patch[] = { |
| 368 | { 0x09, 0x3d, }, |
| 369 | { 0x0a, 0x3e, }, |
| 370 | { 0x0b, 0x01, }, |
| 371 | { 0x10, 0xff, }, |
| 372 | { 0x11, 0xff, }, |
| 373 | { 0x12, 0xff, }, |
| 374 | { 0x13, 0xff, }, |
| 375 | { 0x14, 0, }, |
| 376 | { 0x15, 0, }, |
| 377 | { 0x16, 0x3e, }, |
| 378 | { 0x17, 0, } |
| 379 | }; |
| 380 | |
| 381 | static int rt5190a_device_initialize(struct rt5190a_priv *priv) |
| 382 | { |
| 383 | bool mute_enable; |
| 384 | int ret; |
| 385 | |
| 386 | ret = regmap_register_patch(priv->regmap, rt5190a_init_patch, |
| 387 | ARRAY_SIZE(rt5190a_init_patch)); |
| 388 | if (ret) { |
| 389 | dev_err(priv->dev, "Failed to do register patch\n"); |
| 390 | return ret; |
| 391 | } |
| 392 | |
| 393 | mute_enable = device_property_read_bool(priv->dev, |
| 394 | "richtek,mute-enable"); |
| 395 | |
| 396 | if (mute_enable) { |
| 397 | ret = regmap_write(priv->regmap, RT5190A_REG_MUTECNTL, 0x00); |
| 398 | if (ret) { |
| 399 | dev_err(priv->dev, "Failed to enable mute function\n"); |
| 400 | return ret; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | static int rt5190a_device_check(struct rt5190a_priv *priv) |
| 408 | { |
| 409 | u16 devid; |
| 410 | int ret; |
| 411 | |
| 412 | ret = regmap_raw_read(priv->regmap, RT5190A_REG_MANUFACTURE, &devid, |
| 413 | sizeof(devid)); |
| 414 | if (ret) |
| 415 | return ret; |
| 416 | |
| 417 | if (devid) { |
| 418 | dev_err(priv->dev, "Incorrect device id 0x%04x\n", devid); |
| 419 | return -ENODEV; |
| 420 | } |
| 421 | |
| 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | static const struct regmap_config rt5190a_regmap_config = { |
| 426 | .reg_bits = 8, |
| 427 | .val_bits = 8, |
| 428 | .max_register = RT5190A_REG_HOTDIEMASK, |
| 429 | }; |
| 430 | |
| 431 | static int rt5190a_probe(struct i2c_client *i2c) |
| 432 | { |
| 433 | struct rt5190a_priv *priv; |
| 434 | struct regulator_config cfg = {}; |
| 435 | int i, ret; |
| 436 | |
| 437 | priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL); |
| 438 | if (!priv) |
| 439 | return -ENOMEM; |
| 440 | |
| 441 | priv->dev = &i2c->dev; |
| 442 | |
| 443 | priv->regmap = devm_regmap_init_i2c(i2c, &rt5190a_regmap_config); |
| 444 | if (IS_ERR(priv->regmap)) { |
| 445 | dev_err(&i2c->dev, "Failed to allocate regmap\n"); |
| 446 | return PTR_ERR(priv->regmap); |
| 447 | } |
| 448 | |
| 449 | ret = rt5190a_device_check(priv); |
| 450 | if (ret) { |
| 451 | dev_err(&i2c->dev, "Failed to check device %d\n", ret); |
| 452 | return ret; |
| 453 | } |
| 454 | |
| 455 | ret = rt5190a_device_initialize(priv); |
| 456 | if (ret) { |
| 457 | dev_err(&i2c->dev, "Failed to initialize the device\n"); |
| 458 | return ret; |
| 459 | } |
| 460 | |
| 461 | ret = rt5190a_parse_regulator_dt_data(priv); |
| 462 | if (ret) { |
| 463 | dev_err(&i2c->dev, "Failed to parse regulator dt\n"); |
| 464 | return ret; |
| 465 | } |
| 466 | |
| 467 | cfg.dev = &i2c->dev; |
| 468 | cfg.regmap = priv->regmap; |
| 469 | |
| 470 | for (i = 0; i < RT5190A_MAX_IDX; i++) { |
| 471 | struct regulator_desc *desc = priv->rdesc + i; |
| 472 | struct of_regulator_match *match = rt5190a_regulator_match + i; |
| 473 | |
| 474 | cfg.init_data = match->init_data; |
| 475 | cfg.of_node = match->of_node; |
| 476 | |
| 477 | priv->rdev[i] = devm_regulator_register(&i2c->dev, desc, &cfg); |
| 478 | if (IS_ERR(priv->rdev[i])) { |
| 479 | dev_err(&i2c->dev, "Failed to register regulator %s\n", |
| 480 | desc->name); |
| 481 | return PTR_ERR(priv->rdev[i]); |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | if (i2c->irq) { |
| 486 | ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL, |
| 487 | rt5190a_irq_handler, |
| 488 | IRQF_ONESHOT, |
| 489 | dev_name(&i2c->dev), priv); |
| 490 | if (ret) { |
| 491 | dev_err(&i2c->dev, "Failed to register interrupt\n"); |
| 492 | return ret; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | static const struct of_device_id __maybe_unused rt5190a_device_table[] = { |
| 500 | { .compatible = "richtek,rt5190a", }, |
| 501 | {} |
| 502 | }; |
| 503 | MODULE_DEVICE_TABLE(of, rt5190a_device_table); |
| 504 | |
| 505 | static struct i2c_driver rt5190a_driver = { |
| 506 | .driver = { |
| 507 | .name = "rt5190a", |
| 508 | .of_match_table = rt5190a_device_table, |
| 509 | }, |
| 510 | .probe_new = rt5190a_probe, |
| 511 | }; |
| 512 | module_i2c_driver(rt5190a_driver); |
| 513 | |
| 514 | MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); |
| 515 | MODULE_DESCRIPTION("Richtek RT5190A Regulator Driver"); |
| 516 | MODULE_LICENSE("GPL v2"); |