1 /* 2 * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 and 6 * only version 2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/delay.h> 16 #include <linux/err.h> 17 #include <linux/kernel.h> 18 #include <linux/interrupt.h> 19 #include <linux/bitops.h> 20 #include <linux/slab.h> 21 #include <linux/of.h> 22 #include <linux/of_device.h> 23 #include <linux/platform_device.h> 24 #include <linux/ktime.h> 25 #include <linux/regulator/driver.h> 26 #include <linux/regmap.h> 27 #include <linux/list.h> 28 29 /* Pin control enable input pins. */ 30 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_NONE 0x00 31 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN0 0x01 32 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN1 0x02 33 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN2 0x04 34 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN3 0x08 35 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT 0x10 36 37 /* Pin control high power mode input pins. */ 38 #define SPMI_REGULATOR_PIN_CTRL_HPM_NONE 0x00 39 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN0 0x01 40 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN1 0x02 41 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN2 0x04 42 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN3 0x08 43 #define SPMI_REGULATOR_PIN_CTRL_HPM_SLEEP_B 0x10 44 #define SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT 0x20 45 46 /* 47 * Used with enable parameters to specify that hardware default register values 48 * should be left unaltered. 49 */ 50 #define SPMI_REGULATOR_USE_HW_DEFAULT 2 51 52 /* Soft start strength of a voltage switch type regulator */ 53 enum spmi_vs_soft_start_str { 54 SPMI_VS_SOFT_START_STR_0P05_UA = 0, 55 SPMI_VS_SOFT_START_STR_0P25_UA, 56 SPMI_VS_SOFT_START_STR_0P55_UA, 57 SPMI_VS_SOFT_START_STR_0P75_UA, 58 SPMI_VS_SOFT_START_STR_HW_DEFAULT, 59 }; 60 61 /** 62 * struct spmi_regulator_init_data - spmi-regulator initialization data 63 * @pin_ctrl_enable: Bit mask specifying which hardware pins should be 64 * used to enable the regulator, if any 65 * Value should be an ORing of 66 * SPMI_REGULATOR_PIN_CTRL_ENABLE_* constants. If 67 * the bit specified by 68 * SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT is 69 * set, then pin control enable hardware registers 70 * will not be modified. 71 * @pin_ctrl_hpm: Bit mask specifying which hardware pins should be 72 * used to force the regulator into high power 73 * mode, if any 74 * Value should be an ORing of 75 * SPMI_REGULATOR_PIN_CTRL_HPM_* constants. If 76 * the bit specified by 77 * SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT is 78 * set, then pin control mode hardware registers 79 * will not be modified. 80 * @vs_soft_start_strength: This parameter sets the soft start strength for 81 * voltage switch type regulators. Its value 82 * should be one of SPMI_VS_SOFT_START_STR_*. If 83 * its value is SPMI_VS_SOFT_START_STR_HW_DEFAULT, 84 * then the soft start strength will be left at its 85 * default hardware value. 86 */ 87 struct spmi_regulator_init_data { 88 unsigned pin_ctrl_enable; 89 unsigned pin_ctrl_hpm; 90 enum spmi_vs_soft_start_str vs_soft_start_strength; 91 }; 92 93 /* These types correspond to unique register layouts. */ 94 enum spmi_regulator_logical_type { 95 SPMI_REGULATOR_LOGICAL_TYPE_SMPS, 96 SPMI_REGULATOR_LOGICAL_TYPE_LDO, 97 SPMI_REGULATOR_LOGICAL_TYPE_VS, 98 SPMI_REGULATOR_LOGICAL_TYPE_BOOST, 99 SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS, 100 SPMI_REGULATOR_LOGICAL_TYPE_BOOST_BYP, 101 SPMI_REGULATOR_LOGICAL_TYPE_LN_LDO, 102 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS, 103 SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS, 104 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO, 105 }; 106 107 enum spmi_regulator_type { 108 SPMI_REGULATOR_TYPE_BUCK = 0x03, 109 SPMI_REGULATOR_TYPE_LDO = 0x04, 110 SPMI_REGULATOR_TYPE_VS = 0x05, 111 SPMI_REGULATOR_TYPE_BOOST = 0x1b, 112 SPMI_REGULATOR_TYPE_FTS = 0x1c, 113 SPMI_REGULATOR_TYPE_BOOST_BYP = 0x1f, 114 SPMI_REGULATOR_TYPE_ULT_LDO = 0x21, 115 SPMI_REGULATOR_TYPE_ULT_BUCK = 0x22, 116 }; 117 118 enum spmi_regulator_subtype { 119 SPMI_REGULATOR_SUBTYPE_GP_CTL = 0x08, 120 SPMI_REGULATOR_SUBTYPE_RF_CTL = 0x09, 121 SPMI_REGULATOR_SUBTYPE_N50 = 0x01, 122 SPMI_REGULATOR_SUBTYPE_N150 = 0x02, 123 SPMI_REGULATOR_SUBTYPE_N300 = 0x03, 124 SPMI_REGULATOR_SUBTYPE_N600 = 0x04, 125 SPMI_REGULATOR_SUBTYPE_N1200 = 0x05, 126 SPMI_REGULATOR_SUBTYPE_N600_ST = 0x06, 127 SPMI_REGULATOR_SUBTYPE_N1200_ST = 0x07, 128 SPMI_REGULATOR_SUBTYPE_N900_ST = 0x14, 129 SPMI_REGULATOR_SUBTYPE_N300_ST = 0x15, 130 SPMI_REGULATOR_SUBTYPE_P50 = 0x08, 131 SPMI_REGULATOR_SUBTYPE_P150 = 0x09, 132 SPMI_REGULATOR_SUBTYPE_P300 = 0x0a, 133 SPMI_REGULATOR_SUBTYPE_P600 = 0x0b, 134 SPMI_REGULATOR_SUBTYPE_P1200 = 0x0c, 135 SPMI_REGULATOR_SUBTYPE_LN = 0x10, 136 SPMI_REGULATOR_SUBTYPE_LV_P50 = 0x28, 137 SPMI_REGULATOR_SUBTYPE_LV_P150 = 0x29, 138 SPMI_REGULATOR_SUBTYPE_LV_P300 = 0x2a, 139 SPMI_REGULATOR_SUBTYPE_LV_P600 = 0x2b, 140 SPMI_REGULATOR_SUBTYPE_LV_P1200 = 0x2c, 141 SPMI_REGULATOR_SUBTYPE_LV_P450 = 0x2d, 142 SPMI_REGULATOR_SUBTYPE_LV100 = 0x01, 143 SPMI_REGULATOR_SUBTYPE_LV300 = 0x02, 144 SPMI_REGULATOR_SUBTYPE_MV300 = 0x08, 145 SPMI_REGULATOR_SUBTYPE_MV500 = 0x09, 146 SPMI_REGULATOR_SUBTYPE_HDMI = 0x10, 147 SPMI_REGULATOR_SUBTYPE_OTG = 0x11, 148 SPMI_REGULATOR_SUBTYPE_5V_BOOST = 0x01, 149 SPMI_REGULATOR_SUBTYPE_FTS_CTL = 0x08, 150 SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL = 0x09, 151 SPMI_REGULATOR_SUBTYPE_BB_2A = 0x01, 152 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1 = 0x0d, 153 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e, 154 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3 = 0x0f, 155 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4 = 0x10, 156 }; 157 158 enum spmi_common_regulator_registers { 159 SPMI_COMMON_REG_DIG_MAJOR_REV = 0x01, 160 SPMI_COMMON_REG_TYPE = 0x04, 161 SPMI_COMMON_REG_SUBTYPE = 0x05, 162 SPMI_COMMON_REG_VOLTAGE_RANGE = 0x40, 163 SPMI_COMMON_REG_VOLTAGE_SET = 0x41, 164 SPMI_COMMON_REG_MODE = 0x45, 165 SPMI_COMMON_REG_ENABLE = 0x46, 166 SPMI_COMMON_REG_PULL_DOWN = 0x48, 167 SPMI_COMMON_REG_SOFT_START = 0x4c, 168 SPMI_COMMON_REG_STEP_CTRL = 0x61, 169 }; 170 171 enum spmi_vs_registers { 172 SPMI_VS_REG_OCP = 0x4a, 173 SPMI_VS_REG_SOFT_START = 0x4c, 174 }; 175 176 enum spmi_boost_registers { 177 SPMI_BOOST_REG_CURRENT_LIMIT = 0x4a, 178 }; 179 180 enum spmi_boost_byp_registers { 181 SPMI_BOOST_BYP_REG_CURRENT_LIMIT = 0x4b, 182 }; 183 184 /* Used for indexing into ctrl_reg. These are offets from 0x40 */ 185 enum spmi_common_control_register_index { 186 SPMI_COMMON_IDX_VOLTAGE_RANGE = 0, 187 SPMI_COMMON_IDX_VOLTAGE_SET = 1, 188 SPMI_COMMON_IDX_MODE = 5, 189 SPMI_COMMON_IDX_ENABLE = 6, 190 }; 191 192 /* Common regulator control register layout */ 193 #define SPMI_COMMON_ENABLE_MASK 0x80 194 #define SPMI_COMMON_ENABLE 0x80 195 #define SPMI_COMMON_DISABLE 0x00 196 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN3_MASK 0x08 197 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN2_MASK 0x04 198 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN1_MASK 0x02 199 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN0_MASK 0x01 200 #define SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK 0x0f 201 202 /* Common regulator mode register layout */ 203 #define SPMI_COMMON_MODE_HPM_MASK 0x80 204 #define SPMI_COMMON_MODE_AUTO_MASK 0x40 205 #define SPMI_COMMON_MODE_BYPASS_MASK 0x20 206 #define SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK 0x10 207 #define SPMI_COMMON_MODE_FOLLOW_HW_EN3_MASK 0x08 208 #define SPMI_COMMON_MODE_FOLLOW_HW_EN2_MASK 0x04 209 #define SPMI_COMMON_MODE_FOLLOW_HW_EN1_MASK 0x02 210 #define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK 0x01 211 #define SPMI_COMMON_MODE_FOLLOW_ALL_MASK 0x1f 212 213 /* Common regulator pull down control register layout */ 214 #define SPMI_COMMON_PULL_DOWN_ENABLE_MASK 0x80 215 216 /* LDO regulator current limit control register layout */ 217 #define SPMI_LDO_CURRENT_LIMIT_ENABLE_MASK 0x80 218 219 /* LDO regulator soft start control register layout */ 220 #define SPMI_LDO_SOFT_START_ENABLE_MASK 0x80 221 222 /* VS regulator over current protection control register layout */ 223 #define SPMI_VS_OCP_OVERRIDE 0x01 224 #define SPMI_VS_OCP_NO_OVERRIDE 0x00 225 226 /* VS regulator soft start control register layout */ 227 #define SPMI_VS_SOFT_START_ENABLE_MASK 0x80 228 #define SPMI_VS_SOFT_START_SEL_MASK 0x03 229 230 /* Boost regulator current limit control register layout */ 231 #define SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK 0x80 232 #define SPMI_BOOST_CURRENT_LIMIT_MASK 0x07 233 234 #define SPMI_VS_OCP_DEFAULT_MAX_RETRIES 10 235 #define SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS 30 236 #define SPMI_VS_OCP_FALL_DELAY_US 90 237 #define SPMI_VS_OCP_FAULT_DELAY_US 20000 238 239 #define SPMI_FTSMPS_STEP_CTRL_STEP_MASK 0x18 240 #define SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT 3 241 #define SPMI_FTSMPS_STEP_CTRL_DELAY_MASK 0x07 242 #define SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT 0 243 244 /* Clock rate in kHz of the FTSMPS regulator reference clock. */ 245 #define SPMI_FTSMPS_CLOCK_RATE 19200 246 247 /* Minimum voltage stepper delay for each step. */ 248 #define SPMI_FTSMPS_STEP_DELAY 8 249 #define SPMI_DEFAULT_STEP_DELAY 20 250 251 /* 252 * The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to 253 * adjust the step rate in order to account for oscillator variance. 254 */ 255 #define SPMI_FTSMPS_STEP_MARGIN_NUM 4 256 #define SPMI_FTSMPS_STEP_MARGIN_DEN 5 257 258 /* VSET value to decide the range of ULT SMPS */ 259 #define ULT_SMPS_RANGE_SPLIT 0x60 260 261 /** 262 * struct spmi_voltage_range - regulator set point voltage mapping description 263 * @min_uV: Minimum programmable output voltage resulting from 264 * set point register value 0x00 265 * @max_uV: Maximum programmable output voltage 266 * @step_uV: Output voltage increase resulting from the set point 267 * register value increasing by 1 268 * @set_point_min_uV: Minimum allowed voltage 269 * @set_point_max_uV: Maximum allowed voltage. This may be tweaked in order 270 * to pick which range should be used in the case of 271 * overlapping set points. 272 * @n_voltages: Number of preferred voltage set points present in this 273 * range 274 * @range_sel: Voltage range register value corresponding to this range 275 * 276 * The following relationships must be true for the values used in this struct: 277 * (max_uV - min_uV) % step_uV == 0 278 * (set_point_min_uV - min_uV) % step_uV == 0* 279 * (set_point_max_uV - min_uV) % step_uV == 0* 280 * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1 281 * 282 * *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to 283 * specify that the voltage range has meaning, but is not preferred. 284 */ 285 struct spmi_voltage_range { 286 int min_uV; 287 int max_uV; 288 int step_uV; 289 int set_point_min_uV; 290 int set_point_max_uV; 291 unsigned n_voltages; 292 u8 range_sel; 293 }; 294 295 /* 296 * The ranges specified in the spmi_voltage_set_points struct must be listed 297 * so that range[i].set_point_max_uV < range[i+1].set_point_min_uV. 298 */ 299 struct spmi_voltage_set_points { 300 struct spmi_voltage_range *range; 301 int count; 302 unsigned n_voltages; 303 }; 304 305 struct spmi_regulator { 306 struct regulator_desc desc; 307 struct device *dev; 308 struct delayed_work ocp_work; 309 struct regmap *regmap; 310 struct spmi_voltage_set_points *set_points; 311 enum spmi_regulator_logical_type logical_type; 312 int ocp_irq; 313 int ocp_count; 314 int ocp_max_retries; 315 int ocp_retry_delay_ms; 316 int hpm_min_load; 317 int slew_rate; 318 ktime_t vs_enable_time; 319 u16 base; 320 struct list_head node; 321 }; 322 323 struct spmi_regulator_mapping { 324 enum spmi_regulator_type type; 325 enum spmi_regulator_subtype subtype; 326 enum spmi_regulator_logical_type logical_type; 327 u32 revision_min; 328 u32 revision_max; 329 struct regulator_ops *ops; 330 struct spmi_voltage_set_points *set_points; 331 int hpm_min_load; 332 }; 333 334 struct spmi_regulator_data { 335 const char *name; 336 u16 base; 337 const char *supply; 338 const char *ocp; 339 u16 force_type; 340 }; 341 342 #define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \ 343 _logical_type, _ops_val, _set_points_val, _hpm_min_load) \ 344 { \ 345 .type = SPMI_REGULATOR_TYPE_##_type, \ 346 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \ 347 .revision_min = _dig_major_min, \ 348 .revision_max = _dig_major_max, \ 349 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \ 350 .ops = &spmi_##_ops_val##_ops, \ 351 .set_points = &_set_points_val##_set_points, \ 352 .hpm_min_load = _hpm_min_load, \ 353 } 354 355 #define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \ 356 { \ 357 .type = SPMI_REGULATOR_TYPE_VS, \ 358 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \ 359 .revision_min = _dig_major_min, \ 360 .revision_max = _dig_major_max, \ 361 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_VS, \ 362 .ops = &spmi_vs_ops, \ 363 } 364 365 #define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \ 366 _set_point_max_uV, _max_uV, _step_uV) \ 367 { \ 368 .min_uV = _min_uV, \ 369 .max_uV = _max_uV, \ 370 .set_point_min_uV = _set_point_min_uV, \ 371 .set_point_max_uV = _set_point_max_uV, \ 372 .step_uV = _step_uV, \ 373 .range_sel = _range_sel, \ 374 } 375 376 #define DEFINE_SPMI_SET_POINTS(name) \ 377 struct spmi_voltage_set_points name##_set_points = { \ 378 .range = name##_ranges, \ 379 .count = ARRAY_SIZE(name##_ranges), \ 380 } 381 382 /* 383 * These tables contain the physically available PMIC regulator voltage setpoint 384 * ranges. Where two ranges overlap in hardware, one of the ranges is trimmed 385 * to ensure that the setpoints available to software are monotonically 386 * increasing and unique. The set_voltage callback functions expect these 387 * properties to hold. 388 */ 389 static struct spmi_voltage_range pldo_ranges[] = { 390 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500), 391 SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000), 392 SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000), 393 }; 394 395 static struct spmi_voltage_range nldo1_ranges[] = { 396 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500), 397 }; 398 399 static struct spmi_voltage_range nldo2_ranges[] = { 400 SPMI_VOLTAGE_RANGE(0, 375000, 0, 0, 1537500, 12500), 401 SPMI_VOLTAGE_RANGE(1, 375000, 375000, 768750, 768750, 6250), 402 SPMI_VOLTAGE_RANGE(2, 750000, 775000, 1537500, 1537500, 12500), 403 }; 404 405 static struct spmi_voltage_range nldo3_ranges[] = { 406 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500), 407 SPMI_VOLTAGE_RANGE(1, 375000, 0, 0, 1537500, 12500), 408 SPMI_VOLTAGE_RANGE(2, 750000, 0, 0, 1537500, 12500), 409 }; 410 411 static struct spmi_voltage_range ln_ldo_ranges[] = { 412 SPMI_VOLTAGE_RANGE(1, 690000, 690000, 1110000, 1110000, 60000), 413 SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000), 414 }; 415 416 static struct spmi_voltage_range smps_ranges[] = { 417 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500), 418 SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000), 419 }; 420 421 static struct spmi_voltage_range ftsmps_ranges[] = { 422 SPMI_VOLTAGE_RANGE(0, 0, 350000, 1275000, 1275000, 5000), 423 SPMI_VOLTAGE_RANGE(1, 0, 1280000, 2040000, 2040000, 10000), 424 }; 425 426 static struct spmi_voltage_range ftsmps2p5_ranges[] = { 427 SPMI_VOLTAGE_RANGE(0, 80000, 350000, 1355000, 1355000, 5000), 428 SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000), 429 }; 430 431 static struct spmi_voltage_range boost_ranges[] = { 432 SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000), 433 }; 434 435 static struct spmi_voltage_range boost_byp_ranges[] = { 436 SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000), 437 }; 438 439 static struct spmi_voltage_range ult_lo_smps_ranges[] = { 440 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500), 441 SPMI_VOLTAGE_RANGE(1, 750000, 0, 0, 1525000, 25000), 442 }; 443 444 static struct spmi_voltage_range ult_ho_smps_ranges[] = { 445 SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000), 446 }; 447 448 static struct spmi_voltage_range ult_nldo_ranges[] = { 449 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500), 450 }; 451 452 static struct spmi_voltage_range ult_pldo_ranges[] = { 453 SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500), 454 }; 455 456 static DEFINE_SPMI_SET_POINTS(pldo); 457 static DEFINE_SPMI_SET_POINTS(nldo1); 458 static DEFINE_SPMI_SET_POINTS(nldo2); 459 static DEFINE_SPMI_SET_POINTS(nldo3); 460 static DEFINE_SPMI_SET_POINTS(ln_ldo); 461 static DEFINE_SPMI_SET_POINTS(smps); 462 static DEFINE_SPMI_SET_POINTS(ftsmps); 463 static DEFINE_SPMI_SET_POINTS(ftsmps2p5); 464 static DEFINE_SPMI_SET_POINTS(boost); 465 static DEFINE_SPMI_SET_POINTS(boost_byp); 466 static DEFINE_SPMI_SET_POINTS(ult_lo_smps); 467 static DEFINE_SPMI_SET_POINTS(ult_ho_smps); 468 static DEFINE_SPMI_SET_POINTS(ult_nldo); 469 static DEFINE_SPMI_SET_POINTS(ult_pldo); 470 471 static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf, 472 int len) 473 { 474 return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len); 475 } 476 477 static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr, 478 u8 *buf, int len) 479 { 480 return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len); 481 } 482 483 static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val, 484 u8 mask) 485 { 486 return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val); 487 } 488 489 static int spmi_regulator_common_is_enabled(struct regulator_dev *rdev) 490 { 491 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 492 u8 reg; 493 494 spmi_vreg_read(vreg, SPMI_COMMON_REG_ENABLE, ®, 1); 495 496 return (reg & SPMI_COMMON_ENABLE_MASK) == SPMI_COMMON_ENABLE; 497 } 498 499 static int spmi_regulator_common_enable(struct regulator_dev *rdev) 500 { 501 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 502 503 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, 504 SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK); 505 } 506 507 static int spmi_regulator_vs_enable(struct regulator_dev *rdev) 508 { 509 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 510 511 if (vreg->ocp_irq) { 512 vreg->ocp_count = 0; 513 vreg->vs_enable_time = ktime_get(); 514 } 515 516 return spmi_regulator_common_enable(rdev); 517 } 518 519 static int spmi_regulator_vs_ocp(struct regulator_dev *rdev) 520 { 521 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 522 u8 reg = SPMI_VS_OCP_OVERRIDE; 523 524 return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, ®, 1); 525 } 526 527 static int spmi_regulator_common_disable(struct regulator_dev *rdev) 528 { 529 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 530 531 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, 532 SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK); 533 } 534 535 static int spmi_regulator_select_voltage(struct spmi_regulator *vreg, 536 int min_uV, int max_uV) 537 { 538 const struct spmi_voltage_range *range; 539 int uV = min_uV; 540 int lim_min_uV, lim_max_uV, i, range_id, range_max_uV; 541 int selector, voltage_sel; 542 543 /* Check if request voltage is outside of physically settable range. */ 544 lim_min_uV = vreg->set_points->range[0].set_point_min_uV; 545 lim_max_uV = 546 vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV; 547 548 if (uV < lim_min_uV && max_uV >= lim_min_uV) 549 uV = lim_min_uV; 550 551 if (uV < lim_min_uV || uV > lim_max_uV) { 552 dev_err(vreg->dev, 553 "request v=[%d, %d] is outside possible v=[%d, %d]\n", 554 min_uV, max_uV, lim_min_uV, lim_max_uV); 555 return -EINVAL; 556 } 557 558 /* Find the range which uV is inside of. */ 559 for (i = vreg->set_points->count - 1; i > 0; i--) { 560 range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV; 561 if (uV > range_max_uV && range_max_uV > 0) 562 break; 563 } 564 565 range_id = i; 566 range = &vreg->set_points->range[range_id]; 567 568 /* 569 * Force uV to be an allowed set point by applying a ceiling function to 570 * the uV value. 571 */ 572 voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV); 573 uV = voltage_sel * range->step_uV + range->min_uV; 574 575 if (uV > max_uV) { 576 dev_err(vreg->dev, 577 "request v=[%d, %d] cannot be met by any set point; " 578 "next set point: %d\n", 579 min_uV, max_uV, uV); 580 return -EINVAL; 581 } 582 583 selector = 0; 584 for (i = 0; i < range_id; i++) 585 selector += vreg->set_points->range[i].n_voltages; 586 selector += (uV - range->set_point_min_uV) / range->step_uV; 587 588 return selector; 589 } 590 591 static int spmi_sw_selector_to_hw(struct spmi_regulator *vreg, 592 unsigned selector, u8 *range_sel, 593 u8 *voltage_sel) 594 { 595 const struct spmi_voltage_range *range, *end; 596 597 range = vreg->set_points->range; 598 end = range + vreg->set_points->count; 599 600 for (; range < end; range++) { 601 if (selector < range->n_voltages) { 602 *voltage_sel = selector; 603 *range_sel = range->range_sel; 604 return 0; 605 } 606 607 selector -= range->n_voltages; 608 } 609 610 return -EINVAL; 611 } 612 613 static int spmi_hw_selector_to_sw(struct spmi_regulator *vreg, u8 hw_sel, 614 const struct spmi_voltage_range *range) 615 { 616 int sw_sel = hw_sel; 617 const struct spmi_voltage_range *r = vreg->set_points->range; 618 619 while (r != range) { 620 sw_sel += r->n_voltages; 621 r++; 622 } 623 624 return sw_sel; 625 } 626 627 static const struct spmi_voltage_range * 628 spmi_regulator_find_range(struct spmi_regulator *vreg) 629 { 630 u8 range_sel; 631 const struct spmi_voltage_range *range, *end; 632 633 range = vreg->set_points->range; 634 end = range + vreg->set_points->count; 635 636 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1); 637 638 for (; range < end; range++) 639 if (range->range_sel == range_sel) 640 return range; 641 642 return NULL; 643 } 644 645 static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg, 646 int min_uV, int max_uV) 647 { 648 const struct spmi_voltage_range *range; 649 int uV = min_uV; 650 int i, selector; 651 652 range = spmi_regulator_find_range(vreg); 653 if (!range) 654 goto different_range; 655 656 if (uV < range->min_uV && max_uV >= range->min_uV) 657 uV = range->min_uV; 658 659 if (uV < range->min_uV || uV > range->max_uV) { 660 /* Current range doesn't support the requested voltage. */ 661 goto different_range; 662 } 663 664 /* 665 * Force uV to be an allowed set point by applying a ceiling function to 666 * the uV value. 667 */ 668 uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV); 669 uV = uV * range->step_uV + range->min_uV; 670 671 if (uV > max_uV) { 672 /* 673 * No set point in the current voltage range is within the 674 * requested min_uV to max_uV range. 675 */ 676 goto different_range; 677 } 678 679 selector = 0; 680 for (i = 0; i < vreg->set_points->count; i++) { 681 if (uV >= vreg->set_points->range[i].set_point_min_uV 682 && uV <= vreg->set_points->range[i].set_point_max_uV) { 683 selector += 684 (uV - vreg->set_points->range[i].set_point_min_uV) 685 / vreg->set_points->range[i].step_uV; 686 break; 687 } 688 689 selector += vreg->set_points->range[i].n_voltages; 690 } 691 692 if (selector >= vreg->set_points->n_voltages) 693 goto different_range; 694 695 return selector; 696 697 different_range: 698 return spmi_regulator_select_voltage(vreg, min_uV, max_uV); 699 } 700 701 static int spmi_regulator_common_map_voltage(struct regulator_dev *rdev, 702 int min_uV, int max_uV) 703 { 704 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 705 706 /* 707 * Favor staying in the current voltage range if possible. This avoids 708 * voltage spikes that occur when changing the voltage range. 709 */ 710 return spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV); 711 } 712 713 static int 714 spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector) 715 { 716 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 717 int ret; 718 u8 buf[2]; 719 u8 range_sel, voltage_sel; 720 721 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel); 722 if (ret) 723 return ret; 724 725 buf[0] = range_sel; 726 buf[1] = voltage_sel; 727 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2); 728 } 729 730 static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev, 731 unsigned int old_selector, unsigned int new_selector) 732 { 733 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 734 const struct spmi_voltage_range *range; 735 int diff_uV; 736 737 range = spmi_regulator_find_range(vreg); 738 if (!range) 739 return -EINVAL; 740 741 diff_uV = abs(new_selector - old_selector) * range->step_uV; 742 743 return DIV_ROUND_UP(diff_uV, vreg->slew_rate); 744 } 745 746 static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev) 747 { 748 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 749 const struct spmi_voltage_range *range; 750 u8 voltage_sel; 751 752 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1); 753 754 range = spmi_regulator_find_range(vreg); 755 if (!range) 756 return -EINVAL; 757 758 return spmi_hw_selector_to_sw(vreg, voltage_sel, range); 759 } 760 761 static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev, 762 int min_uV, int max_uV) 763 { 764 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 765 766 return spmi_regulator_select_voltage(vreg, min_uV, max_uV); 767 } 768 769 static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev, 770 unsigned selector) 771 { 772 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 773 u8 sel = selector; 774 775 /* 776 * Certain types of regulators do not have a range select register so 777 * only voltage set register needs to be written. 778 */ 779 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1); 780 } 781 782 static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev) 783 { 784 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 785 u8 selector; 786 int ret; 787 788 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1); 789 if (ret) 790 return ret; 791 792 return selector; 793 } 794 795 static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev, 796 unsigned selector) 797 { 798 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 799 int ret; 800 u8 range_sel, voltage_sel; 801 802 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel); 803 if (ret) 804 return ret; 805 806 /* 807 * Calculate VSET based on range 808 * In case of range 0: voltage_sel is a 7 bit value, can be written 809 * witout any modification. 810 * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to 811 * [011]. 812 */ 813 if (range_sel == 1) 814 voltage_sel |= ULT_SMPS_RANGE_SPLIT; 815 816 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET, 817 voltage_sel, 0xff); 818 } 819 820 static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev) 821 { 822 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 823 const struct spmi_voltage_range *range; 824 u8 voltage_sel; 825 826 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1); 827 828 range = spmi_regulator_find_range(vreg); 829 if (!range) 830 return -EINVAL; 831 832 if (range->range_sel == 1) 833 voltage_sel &= ~ULT_SMPS_RANGE_SPLIT; 834 835 return spmi_hw_selector_to_sw(vreg, voltage_sel, range); 836 } 837 838 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev, 839 unsigned selector) 840 { 841 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 842 int uV = 0; 843 int i; 844 845 if (selector >= vreg->set_points->n_voltages) 846 return 0; 847 848 for (i = 0; i < vreg->set_points->count; i++) { 849 if (selector < vreg->set_points->range[i].n_voltages) { 850 uV = selector * vreg->set_points->range[i].step_uV 851 + vreg->set_points->range[i].set_point_min_uV; 852 break; 853 } 854 855 selector -= vreg->set_points->range[i].n_voltages; 856 } 857 858 return uV; 859 } 860 861 static int 862 spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable) 863 { 864 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 865 u8 mask = SPMI_COMMON_MODE_BYPASS_MASK; 866 u8 val = 0; 867 868 if (enable) 869 val = mask; 870 871 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask); 872 } 873 874 static int 875 spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable) 876 { 877 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 878 u8 val; 879 int ret; 880 881 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1); 882 *enable = val & SPMI_COMMON_MODE_BYPASS_MASK; 883 884 return ret; 885 } 886 887 static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev) 888 { 889 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 890 u8 reg; 891 892 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1); 893 894 if (reg & SPMI_COMMON_MODE_HPM_MASK) 895 return REGULATOR_MODE_NORMAL; 896 897 if (reg & SPMI_COMMON_MODE_AUTO_MASK) 898 return REGULATOR_MODE_FAST; 899 900 return REGULATOR_MODE_IDLE; 901 } 902 903 static int 904 spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode) 905 { 906 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 907 u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK; 908 u8 val = 0; 909 910 if (mode == REGULATOR_MODE_NORMAL) 911 val = SPMI_COMMON_MODE_HPM_MASK; 912 else if (mode == REGULATOR_MODE_FAST) 913 val = SPMI_COMMON_MODE_AUTO_MASK; 914 915 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask); 916 } 917 918 static int 919 spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA) 920 { 921 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 922 unsigned int mode; 923 924 if (load_uA >= vreg->hpm_min_load) 925 mode = REGULATOR_MODE_NORMAL; 926 else 927 mode = REGULATOR_MODE_IDLE; 928 929 return spmi_regulator_common_set_mode(rdev, mode); 930 } 931 932 static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev) 933 { 934 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 935 unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK; 936 937 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN, 938 mask, mask); 939 } 940 941 static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev) 942 { 943 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 944 unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK; 945 946 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START, 947 mask, mask); 948 } 949 950 static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA) 951 { 952 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 953 enum spmi_regulator_logical_type type = vreg->logical_type; 954 unsigned int current_reg; 955 u8 reg; 956 u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK | 957 SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK; 958 int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500; 959 960 if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST) 961 current_reg = SPMI_BOOST_REG_CURRENT_LIMIT; 962 else 963 current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT; 964 965 if (ilim_uA > max || ilim_uA <= 0) 966 return -EINVAL; 967 968 reg = (ilim_uA - 1) / 500; 969 reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK; 970 971 return spmi_vreg_update_bits(vreg, current_reg, reg, mask); 972 } 973 974 static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg) 975 { 976 int ret; 977 978 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, 979 SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK); 980 981 vreg->vs_enable_time = ktime_get(); 982 983 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, 984 SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK); 985 986 return ret; 987 } 988 989 static void spmi_regulator_vs_ocp_work(struct work_struct *work) 990 { 991 struct delayed_work *dwork = to_delayed_work(work); 992 struct spmi_regulator *vreg 993 = container_of(dwork, struct spmi_regulator, ocp_work); 994 995 spmi_regulator_vs_clear_ocp(vreg); 996 } 997 998 static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data) 999 { 1000 struct spmi_regulator *vreg = data; 1001 ktime_t ocp_irq_time; 1002 s64 ocp_trigger_delay_us; 1003 1004 ocp_irq_time = ktime_get(); 1005 ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time, 1006 vreg->vs_enable_time); 1007 1008 /* 1009 * Reset the OCP count if there is a large delay between switch enable 1010 * and when OCP triggers. This is indicative of a hotplug event as 1011 * opposed to a fault. 1012 */ 1013 if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US) 1014 vreg->ocp_count = 0; 1015 1016 /* Wait for switch output to settle back to 0 V after OCP triggered. */ 1017 udelay(SPMI_VS_OCP_FALL_DELAY_US); 1018 1019 vreg->ocp_count++; 1020 1021 if (vreg->ocp_count == 1) { 1022 /* Immediately clear the over current condition. */ 1023 spmi_regulator_vs_clear_ocp(vreg); 1024 } else if (vreg->ocp_count <= vreg->ocp_max_retries) { 1025 /* Schedule the over current clear task to run later. */ 1026 schedule_delayed_work(&vreg->ocp_work, 1027 msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1); 1028 } else { 1029 dev_err(vreg->dev, 1030 "OCP triggered %d times; no further retries\n", 1031 vreg->ocp_count); 1032 } 1033 1034 return IRQ_HANDLED; 1035 } 1036 1037 static struct regulator_ops spmi_smps_ops = { 1038 .enable = spmi_regulator_common_enable, 1039 .disable = spmi_regulator_common_disable, 1040 .is_enabled = spmi_regulator_common_is_enabled, 1041 .set_voltage_sel = spmi_regulator_common_set_voltage, 1042 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1043 .get_voltage_sel = spmi_regulator_common_get_voltage, 1044 .map_voltage = spmi_regulator_common_map_voltage, 1045 .list_voltage = spmi_regulator_common_list_voltage, 1046 .set_mode = spmi_regulator_common_set_mode, 1047 .get_mode = spmi_regulator_common_get_mode, 1048 .set_load = spmi_regulator_common_set_load, 1049 .set_pull_down = spmi_regulator_common_set_pull_down, 1050 }; 1051 1052 static struct regulator_ops spmi_ldo_ops = { 1053 .enable = spmi_regulator_common_enable, 1054 .disable = spmi_regulator_common_disable, 1055 .is_enabled = spmi_regulator_common_is_enabled, 1056 .set_voltage_sel = spmi_regulator_common_set_voltage, 1057 .get_voltage_sel = spmi_regulator_common_get_voltage, 1058 .map_voltage = spmi_regulator_common_map_voltage, 1059 .list_voltage = spmi_regulator_common_list_voltage, 1060 .set_mode = spmi_regulator_common_set_mode, 1061 .get_mode = spmi_regulator_common_get_mode, 1062 .set_load = spmi_regulator_common_set_load, 1063 .set_bypass = spmi_regulator_common_set_bypass, 1064 .get_bypass = spmi_regulator_common_get_bypass, 1065 .set_pull_down = spmi_regulator_common_set_pull_down, 1066 .set_soft_start = spmi_regulator_common_set_soft_start, 1067 }; 1068 1069 static struct regulator_ops spmi_ln_ldo_ops = { 1070 .enable = spmi_regulator_common_enable, 1071 .disable = spmi_regulator_common_disable, 1072 .is_enabled = spmi_regulator_common_is_enabled, 1073 .set_voltage_sel = spmi_regulator_common_set_voltage, 1074 .get_voltage_sel = spmi_regulator_common_get_voltage, 1075 .map_voltage = spmi_regulator_common_map_voltage, 1076 .list_voltage = spmi_regulator_common_list_voltage, 1077 .set_bypass = spmi_regulator_common_set_bypass, 1078 .get_bypass = spmi_regulator_common_get_bypass, 1079 }; 1080 1081 static struct regulator_ops spmi_vs_ops = { 1082 .enable = spmi_regulator_vs_enable, 1083 .disable = spmi_regulator_common_disable, 1084 .is_enabled = spmi_regulator_common_is_enabled, 1085 .set_pull_down = spmi_regulator_common_set_pull_down, 1086 .set_soft_start = spmi_regulator_common_set_soft_start, 1087 .set_over_current_protection = spmi_regulator_vs_ocp, 1088 }; 1089 1090 static struct regulator_ops spmi_boost_ops = { 1091 .enable = spmi_regulator_common_enable, 1092 .disable = spmi_regulator_common_disable, 1093 .is_enabled = spmi_regulator_common_is_enabled, 1094 .set_voltage_sel = spmi_regulator_single_range_set_voltage, 1095 .get_voltage_sel = spmi_regulator_single_range_get_voltage, 1096 .map_voltage = spmi_regulator_single_map_voltage, 1097 .list_voltage = spmi_regulator_common_list_voltage, 1098 .set_input_current_limit = spmi_regulator_set_ilim, 1099 }; 1100 1101 static struct regulator_ops spmi_ftsmps_ops = { 1102 .enable = spmi_regulator_common_enable, 1103 .disable = spmi_regulator_common_disable, 1104 .is_enabled = spmi_regulator_common_is_enabled, 1105 .set_voltage_sel = spmi_regulator_common_set_voltage, 1106 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1107 .get_voltage_sel = spmi_regulator_common_get_voltage, 1108 .map_voltage = spmi_regulator_common_map_voltage, 1109 .list_voltage = spmi_regulator_common_list_voltage, 1110 .set_mode = spmi_regulator_common_set_mode, 1111 .get_mode = spmi_regulator_common_get_mode, 1112 .set_load = spmi_regulator_common_set_load, 1113 .set_pull_down = spmi_regulator_common_set_pull_down, 1114 }; 1115 1116 static struct regulator_ops spmi_ult_lo_smps_ops = { 1117 .enable = spmi_regulator_common_enable, 1118 .disable = spmi_regulator_common_disable, 1119 .is_enabled = spmi_regulator_common_is_enabled, 1120 .set_voltage_sel = spmi_regulator_ult_lo_smps_set_voltage, 1121 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1122 .get_voltage_sel = spmi_regulator_ult_lo_smps_get_voltage, 1123 .list_voltage = spmi_regulator_common_list_voltage, 1124 .set_mode = spmi_regulator_common_set_mode, 1125 .get_mode = spmi_regulator_common_get_mode, 1126 .set_load = spmi_regulator_common_set_load, 1127 .set_pull_down = spmi_regulator_common_set_pull_down, 1128 }; 1129 1130 static struct regulator_ops spmi_ult_ho_smps_ops = { 1131 .enable = spmi_regulator_common_enable, 1132 .disable = spmi_regulator_common_disable, 1133 .is_enabled = spmi_regulator_common_is_enabled, 1134 .set_voltage_sel = spmi_regulator_single_range_set_voltage, 1135 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1136 .get_voltage_sel = spmi_regulator_single_range_get_voltage, 1137 .map_voltage = spmi_regulator_single_map_voltage, 1138 .list_voltage = spmi_regulator_common_list_voltage, 1139 .set_mode = spmi_regulator_common_set_mode, 1140 .get_mode = spmi_regulator_common_get_mode, 1141 .set_load = spmi_regulator_common_set_load, 1142 .set_pull_down = spmi_regulator_common_set_pull_down, 1143 }; 1144 1145 static struct regulator_ops spmi_ult_ldo_ops = { 1146 .enable = spmi_regulator_common_enable, 1147 .disable = spmi_regulator_common_disable, 1148 .is_enabled = spmi_regulator_common_is_enabled, 1149 .set_voltage_sel = spmi_regulator_single_range_set_voltage, 1150 .get_voltage_sel = spmi_regulator_single_range_get_voltage, 1151 .map_voltage = spmi_regulator_single_map_voltage, 1152 .list_voltage = spmi_regulator_common_list_voltage, 1153 .set_mode = spmi_regulator_common_set_mode, 1154 .get_mode = spmi_regulator_common_get_mode, 1155 .set_load = spmi_regulator_common_set_load, 1156 .set_bypass = spmi_regulator_common_set_bypass, 1157 .get_bypass = spmi_regulator_common_get_bypass, 1158 .set_pull_down = spmi_regulator_common_set_pull_down, 1159 .set_soft_start = spmi_regulator_common_set_soft_start, 1160 }; 1161 1162 /* Maximum possible digital major revision value */ 1163 #define INF 0xFF 1164 1165 static const struct spmi_regulator_mapping supported_regulators[] = { 1166 /* type subtype dig_min dig_max ltype ops setpoints hpm_min */ 1167 SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000), 1168 SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000), 1169 SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000), 1170 SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000), 1171 SPMI_VREG(LDO, N600, 1, INF, LDO, ldo, nldo3, 10000), 1172 SPMI_VREG(LDO, N1200, 1, INF, LDO, ldo, nldo3, 10000), 1173 SPMI_VREG(LDO, N600_ST, 0, 0, LDO, ldo, nldo2, 10000), 1174 SPMI_VREG(LDO, N1200_ST, 0, 0, LDO, ldo, nldo2, 10000), 1175 SPMI_VREG(LDO, N600_ST, 1, INF, LDO, ldo, nldo3, 10000), 1176 SPMI_VREG(LDO, N1200_ST, 1, INF, LDO, ldo, nldo3, 10000), 1177 SPMI_VREG(LDO, P50, 0, INF, LDO, ldo, pldo, 5000), 1178 SPMI_VREG(LDO, P150, 0, INF, LDO, ldo, pldo, 10000), 1179 SPMI_VREG(LDO, P300, 0, INF, LDO, ldo, pldo, 10000), 1180 SPMI_VREG(LDO, P600, 0, INF, LDO, ldo, pldo, 10000), 1181 SPMI_VREG(LDO, P1200, 0, INF, LDO, ldo, pldo, 10000), 1182 SPMI_VREG(LDO, LN, 0, INF, LN_LDO, ln_ldo, ln_ldo, 0), 1183 SPMI_VREG(LDO, LV_P50, 0, INF, LDO, ldo, pldo, 5000), 1184 SPMI_VREG(LDO, LV_P150, 0, INF, LDO, ldo, pldo, 10000), 1185 SPMI_VREG(LDO, LV_P300, 0, INF, LDO, ldo, pldo, 10000), 1186 SPMI_VREG(LDO, LV_P600, 0, INF, LDO, ldo, pldo, 10000), 1187 SPMI_VREG(LDO, LV_P1200, 0, INF, LDO, ldo, pldo, 10000), 1188 SPMI_VREG_VS(LV100, 0, INF), 1189 SPMI_VREG_VS(LV300, 0, INF), 1190 SPMI_VREG_VS(MV300, 0, INF), 1191 SPMI_VREG_VS(MV500, 0, INF), 1192 SPMI_VREG_VS(HDMI, 0, INF), 1193 SPMI_VREG_VS(OTG, 0, INF), 1194 SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0), 1195 SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000), 1196 SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000), 1197 SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0), 1198 SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps, 1199 ult_lo_smps, 100000), 1200 SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps, 1201 ult_lo_smps, 100000), 1202 SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps, 1203 ult_lo_smps, 100000), 1204 SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps, 1205 ult_ho_smps, 100000), 1206 SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1207 SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1208 SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1209 SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1210 SPMI_VREG(ULT_LDO, LV_P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1211 SPMI_VREG(ULT_LDO, LV_P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1212 SPMI_VREG(ULT_LDO, LV_P450, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1213 SPMI_VREG(ULT_LDO, P600, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1214 SPMI_VREG(ULT_LDO, P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1215 SPMI_VREG(ULT_LDO, P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000), 1216 }; 1217 1218 static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points) 1219 { 1220 unsigned int n; 1221 struct spmi_voltage_range *range = points->range; 1222 1223 for (; range < points->range + points->count; range++) { 1224 n = 0; 1225 if (range->set_point_max_uV) { 1226 n = range->set_point_max_uV - range->set_point_min_uV; 1227 n = (n / range->step_uV) + 1; 1228 } 1229 range->n_voltages = n; 1230 points->n_voltages += n; 1231 } 1232 } 1233 1234 static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type) 1235 { 1236 const struct spmi_regulator_mapping *mapping; 1237 int ret, i; 1238 u32 dig_major_rev; 1239 u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1]; 1240 u8 type, subtype; 1241 1242 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version, 1243 ARRAY_SIZE(version)); 1244 if (ret) { 1245 dev_dbg(vreg->dev, "could not read version registers\n"); 1246 return ret; 1247 } 1248 dig_major_rev = version[SPMI_COMMON_REG_DIG_MAJOR_REV 1249 - SPMI_COMMON_REG_DIG_MAJOR_REV]; 1250 if (!force_type) { 1251 type = version[SPMI_COMMON_REG_TYPE - 1252 SPMI_COMMON_REG_DIG_MAJOR_REV]; 1253 subtype = version[SPMI_COMMON_REG_SUBTYPE - 1254 SPMI_COMMON_REG_DIG_MAJOR_REV]; 1255 } else { 1256 type = force_type >> 8; 1257 subtype = force_type; 1258 } 1259 1260 for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) { 1261 mapping = &supported_regulators[i]; 1262 if (mapping->type == type && mapping->subtype == subtype 1263 && mapping->revision_min <= dig_major_rev 1264 && mapping->revision_max >= dig_major_rev) 1265 goto found; 1266 } 1267 1268 dev_err(vreg->dev, 1269 "unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n", 1270 vreg->desc.name, type, subtype, dig_major_rev); 1271 1272 return -ENODEV; 1273 1274 found: 1275 vreg->logical_type = mapping->logical_type; 1276 vreg->set_points = mapping->set_points; 1277 vreg->hpm_min_load = mapping->hpm_min_load; 1278 vreg->desc.ops = mapping->ops; 1279 1280 if (mapping->set_points) { 1281 if (!mapping->set_points->n_voltages) 1282 spmi_calculate_num_voltages(mapping->set_points); 1283 vreg->desc.n_voltages = mapping->set_points->n_voltages; 1284 } 1285 1286 return 0; 1287 } 1288 1289 static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg) 1290 { 1291 int ret; 1292 u8 reg = 0; 1293 int step, delay, slew_rate, step_delay; 1294 const struct spmi_voltage_range *range; 1295 1296 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1); 1297 if (ret) { 1298 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret); 1299 return ret; 1300 } 1301 1302 range = spmi_regulator_find_range(vreg); 1303 if (!range) 1304 return -EINVAL; 1305 1306 switch (vreg->logical_type) { 1307 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS: 1308 step_delay = SPMI_FTSMPS_STEP_DELAY; 1309 break; 1310 default: 1311 step_delay = SPMI_DEFAULT_STEP_DELAY; 1312 break; 1313 } 1314 1315 step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK; 1316 step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT; 1317 1318 delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK; 1319 delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT; 1320 1321 /* slew_rate has units of uV/us */ 1322 slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step); 1323 slew_rate /= 1000 * (step_delay << delay); 1324 slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM; 1325 slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN; 1326 1327 /* Ensure that the slew rate is greater than 0 */ 1328 vreg->slew_rate = max(slew_rate, 1); 1329 1330 return ret; 1331 } 1332 1333 static int spmi_regulator_init_registers(struct spmi_regulator *vreg, 1334 const struct spmi_regulator_init_data *data) 1335 { 1336 int ret; 1337 enum spmi_regulator_logical_type type; 1338 u8 ctrl_reg[8], reg, mask; 1339 1340 type = vreg->logical_type; 1341 1342 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8); 1343 if (ret) 1344 return ret; 1345 1346 /* Set up enable pin control. */ 1347 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS 1348 || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO 1349 || type == SPMI_REGULATOR_LOGICAL_TYPE_VS) 1350 && !(data->pin_ctrl_enable 1351 & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) { 1352 ctrl_reg[SPMI_COMMON_IDX_ENABLE] &= 1353 ~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK; 1354 ctrl_reg[SPMI_COMMON_IDX_ENABLE] |= 1355 data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK; 1356 } 1357 1358 /* Set up mode pin control. */ 1359 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS 1360 || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO) 1361 && !(data->pin_ctrl_hpm 1362 & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) { 1363 ctrl_reg[SPMI_COMMON_IDX_MODE] &= 1364 ~SPMI_COMMON_MODE_FOLLOW_ALL_MASK; 1365 ctrl_reg[SPMI_COMMON_IDX_MODE] |= 1366 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK; 1367 } 1368 1369 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS 1370 && !(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) { 1371 ctrl_reg[SPMI_COMMON_IDX_MODE] &= 1372 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; 1373 ctrl_reg[SPMI_COMMON_IDX_MODE] |= 1374 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; 1375 } 1376 1377 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS 1378 || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS 1379 || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO) 1380 && !(data->pin_ctrl_hpm 1381 & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) { 1382 ctrl_reg[SPMI_COMMON_IDX_MODE] &= 1383 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; 1384 ctrl_reg[SPMI_COMMON_IDX_MODE] |= 1385 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; 1386 } 1387 1388 /* Write back any control register values that were modified. */ 1389 ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8); 1390 if (ret) 1391 return ret; 1392 1393 /* Set soft start strength and over current protection for VS. */ 1394 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) { 1395 if (data->vs_soft_start_strength 1396 != SPMI_VS_SOFT_START_STR_HW_DEFAULT) { 1397 reg = data->vs_soft_start_strength 1398 & SPMI_VS_SOFT_START_SEL_MASK; 1399 mask = SPMI_VS_SOFT_START_SEL_MASK; 1400 return spmi_vreg_update_bits(vreg, 1401 SPMI_VS_REG_SOFT_START, 1402 reg, mask); 1403 } 1404 } 1405 1406 return 0; 1407 } 1408 1409 static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg, 1410 struct device_node *node, struct spmi_regulator_init_data *data) 1411 { 1412 /* 1413 * Initialize configuration parameters to use hardware default in case 1414 * no value is specified via device tree. 1415 */ 1416 data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT; 1417 data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT; 1418 data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT; 1419 1420 /* These bindings are optional, so it is okay if they aren't found. */ 1421 of_property_read_u32(node, "qcom,ocp-max-retries", 1422 &vreg->ocp_max_retries); 1423 of_property_read_u32(node, "qcom,ocp-retry-delay", 1424 &vreg->ocp_retry_delay_ms); 1425 of_property_read_u32(node, "qcom,pin-ctrl-enable", 1426 &data->pin_ctrl_enable); 1427 of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm); 1428 of_property_read_u32(node, "qcom,vs-soft-start-strength", 1429 &data->vs_soft_start_strength); 1430 } 1431 1432 static unsigned int spmi_regulator_of_map_mode(unsigned int mode) 1433 { 1434 if (mode == 1) 1435 return REGULATOR_MODE_NORMAL; 1436 if (mode == 2) 1437 return REGULATOR_MODE_FAST; 1438 1439 return REGULATOR_MODE_IDLE; 1440 } 1441 1442 static int spmi_regulator_of_parse(struct device_node *node, 1443 const struct regulator_desc *desc, 1444 struct regulator_config *config) 1445 { 1446 struct spmi_regulator_init_data data = { }; 1447 struct spmi_regulator *vreg = config->driver_data; 1448 struct device *dev = config->dev; 1449 int ret; 1450 1451 spmi_regulator_get_dt_config(vreg, node, &data); 1452 1453 if (!vreg->ocp_max_retries) 1454 vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES; 1455 if (!vreg->ocp_retry_delay_ms) 1456 vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS; 1457 1458 ret = spmi_regulator_init_registers(vreg, &data); 1459 if (ret) { 1460 dev_err(dev, "common initialization failed, ret=%d\n", ret); 1461 return ret; 1462 } 1463 1464 switch (vreg->logical_type) { 1465 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS: 1466 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS: 1467 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS: 1468 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS: 1469 ret = spmi_regulator_init_slew_rate(vreg); 1470 if (ret) 1471 return ret; 1472 default: 1473 break; 1474 } 1475 1476 if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS) 1477 vreg->ocp_irq = 0; 1478 1479 if (vreg->ocp_irq) { 1480 ret = devm_request_irq(dev, vreg->ocp_irq, 1481 spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp", 1482 vreg); 1483 if (ret < 0) { 1484 dev_err(dev, "failed to request irq %d, ret=%d\n", 1485 vreg->ocp_irq, ret); 1486 return ret; 1487 } 1488 1489 INIT_DELAYED_WORK(&vreg->ocp_work, spmi_regulator_vs_ocp_work); 1490 } 1491 1492 return 0; 1493 } 1494 1495 static const struct spmi_regulator_data pm8941_regulators[] = { 1496 { "s1", 0x1400, "vdd_s1", }, 1497 { "s2", 0x1700, "vdd_s2", }, 1498 { "s3", 0x1a00, "vdd_s3", }, 1499 { "l1", 0x4000, "vdd_l1_l3", }, 1500 { "l2", 0x4100, "vdd_l2_lvs_1_2_3", }, 1501 { "l3", 0x4200, "vdd_l1_l3", }, 1502 { "l4", 0x4300, "vdd_l4_l11", }, 1503 { "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 }, 1504 { "l6", 0x4500, "vdd_l6_l12_l14_l15", }, 1505 { "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 }, 1506 { "l8", 0x4700, "vdd_l8_l16_l18_19", }, 1507 { "l9", 0x4800, "vdd_l9_l10_l17_l22", }, 1508 { "l10", 0x4900, "vdd_l9_l10_l17_l22", }, 1509 { "l11", 0x4a00, "vdd_l4_l11", }, 1510 { "l12", 0x4b00, "vdd_l6_l12_l14_l15", }, 1511 { "l13", 0x4c00, "vdd_l13_l20_l23_l24", }, 1512 { "l14", 0x4d00, "vdd_l6_l12_l14_l15", }, 1513 { "l15", 0x4e00, "vdd_l6_l12_l14_l15", }, 1514 { "l16", 0x4f00, "vdd_l8_l16_l18_19", }, 1515 { "l17", 0x5000, "vdd_l9_l10_l17_l22", }, 1516 { "l18", 0x5100, "vdd_l8_l16_l18_19", }, 1517 { "l19", 0x5200, "vdd_l8_l16_l18_19", }, 1518 { "l20", 0x5300, "vdd_l13_l20_l23_l24", }, 1519 { "l21", 0x5400, "vdd_l21", }, 1520 { "l22", 0x5500, "vdd_l9_l10_l17_l22", }, 1521 { "l23", 0x5600, "vdd_l13_l20_l23_l24", }, 1522 { "l24", 0x5700, "vdd_l13_l20_l23_l24", }, 1523 { "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", }, 1524 { "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", }, 1525 { "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", }, 1526 { "mvs1", 0x8300, "vin_5vs", }, 1527 { "mvs2", 0x8400, "vin_5vs", }, 1528 { } 1529 }; 1530 1531 static const struct spmi_regulator_data pm8841_regulators[] = { 1532 { "s1", 0x1400, "vdd_s1", }, 1533 { "s2", 0x1700, "vdd_s2", NULL, 0x1c08 }, 1534 { "s3", 0x1a00, "vdd_s3", }, 1535 { "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 }, 1536 { "s5", 0x2000, "vdd_s5", NULL, 0x1c08 }, 1537 { "s6", 0x2300, "vdd_s6", NULL, 0x1c08 }, 1538 { "s7", 0x2600, "vdd_s7", NULL, 0x1c08 }, 1539 { "s8", 0x2900, "vdd_s8", NULL, 0x1c08 }, 1540 { } 1541 }; 1542 1543 static const struct spmi_regulator_data pm8916_regulators[] = { 1544 { "s1", 0x1400, "vdd_s1", }, 1545 { "s2", 0x1700, "vdd_s2", }, 1546 { "s3", 0x1a00, "vdd_s3", }, 1547 { "s4", 0x1d00, "vdd_s4", }, 1548 { "l1", 0x4000, "vdd_l1_l3", }, 1549 { "l2", 0x4100, "vdd_l2", }, 1550 { "l3", 0x4200, "vdd_l1_l3", }, 1551 { "l4", 0x4300, "vdd_l4_l5_l6", }, 1552 { "l5", 0x4400, "vdd_l4_l5_l6", }, 1553 { "l6", 0x4500, "vdd_l4_l5_l6", }, 1554 { "l7", 0x4600, "vdd_l7", }, 1555 { "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", }, 1556 { "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", }, 1557 { "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", }, 1558 { "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", }, 1559 { "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", }, 1560 { "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", }, 1561 { "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", }, 1562 { "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", }, 1563 { "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", }, 1564 { "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", }, 1565 { "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", }, 1566 { } 1567 }; 1568 1569 static const struct spmi_regulator_data pm8994_regulators[] = { 1570 { "s1", 0x1400, "vdd_s1", }, 1571 { "s2", 0x1700, "vdd_s2", }, 1572 { "s3", 0x1a00, "vdd_s3", }, 1573 { "s4", 0x1d00, "vdd_s4", }, 1574 { "s5", 0x2000, "vdd_s5", }, 1575 { "s6", 0x2300, "vdd_s6", }, 1576 { "s7", 0x2600, "vdd_s7", }, 1577 { "s8", 0x2900, "vdd_s8", }, 1578 { "s9", 0x2c00, "vdd_s9", }, 1579 { "s10", 0x2f00, "vdd_s10", }, 1580 { "s11", 0x3200, "vdd_s11", }, 1581 { "s12", 0x3500, "vdd_s12", }, 1582 { "l1", 0x4000, "vdd_l1", }, 1583 { "l2", 0x4100, "vdd_l2_l26_l28", }, 1584 { "l3", 0x4200, "vdd_l3_l11", }, 1585 { "l4", 0x4300, "vdd_l4_l27_l31", }, 1586 { "l5", 0x4400, "vdd_l5_l7", }, 1587 { "l6", 0x4500, "vdd_l6_l12_l32", }, 1588 { "l7", 0x4600, "vdd_l5_l7", }, 1589 { "l8", 0x4700, "vdd_l8_l16_l30", }, 1590 { "l9", 0x4800, "vdd_l9_l10_l18_l22", }, 1591 { "l10", 0x4900, "vdd_l9_l10_l18_l22", }, 1592 { "l11", 0x4a00, "vdd_l3_l11", }, 1593 { "l12", 0x4b00, "vdd_l6_l12_l32", }, 1594 { "l13", 0x4c00, "vdd_l13_l19_l23_l24", }, 1595 { "l14", 0x4d00, "vdd_l14_l15", }, 1596 { "l15", 0x4e00, "vdd_l14_l15", }, 1597 { "l16", 0x4f00, "vdd_l8_l16_l30", }, 1598 { "l17", 0x5000, "vdd_l17_l29", }, 1599 { "l18", 0x5100, "vdd_l9_l10_l18_l22", }, 1600 { "l19", 0x5200, "vdd_l13_l19_l23_l24", }, 1601 { "l20", 0x5300, "vdd_l20_l21", }, 1602 { "l21", 0x5400, "vdd_l20_l21", }, 1603 { "l22", 0x5500, "vdd_l9_l10_l18_l22", }, 1604 { "l23", 0x5600, "vdd_l13_l19_l23_l24", }, 1605 { "l24", 0x5700, "vdd_l13_l19_l23_l24", }, 1606 { "l25", 0x5800, "vdd_l25", }, 1607 { "l26", 0x5900, "vdd_l2_l26_l28", }, 1608 { "l27", 0x5a00, "vdd_l4_l27_l31", }, 1609 { "l28", 0x5b00, "vdd_l2_l26_l28", }, 1610 { "l29", 0x5c00, "vdd_l17_l29", }, 1611 { "l30", 0x5d00, "vdd_l8_l16_l30", }, 1612 { "l31", 0x5e00, "vdd_l4_l27_l31", }, 1613 { "l32", 0x5f00, "vdd_l6_l12_l32", }, 1614 { "lvs1", 0x8000, "vdd_lvs_1_2", }, 1615 { "lvs2", 0x8100, "vdd_lvs_1_2", }, 1616 { } 1617 }; 1618 1619 static const struct of_device_id qcom_spmi_regulator_match[] = { 1620 { .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators }, 1621 { .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators }, 1622 { .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators }, 1623 { .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators }, 1624 { } 1625 }; 1626 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match); 1627 1628 static int qcom_spmi_regulator_probe(struct platform_device *pdev) 1629 { 1630 const struct spmi_regulator_data *reg; 1631 const struct of_device_id *match; 1632 struct regulator_config config = { }; 1633 struct regulator_dev *rdev; 1634 struct spmi_regulator *vreg; 1635 struct regmap *regmap; 1636 const char *name; 1637 struct device *dev = &pdev->dev; 1638 int ret; 1639 struct list_head *vreg_list; 1640 1641 vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL); 1642 if (!vreg_list) 1643 return -ENOMEM; 1644 INIT_LIST_HEAD(vreg_list); 1645 platform_set_drvdata(pdev, vreg_list); 1646 1647 regmap = dev_get_regmap(dev->parent, NULL); 1648 if (!regmap) 1649 return -ENODEV; 1650 1651 match = of_match_device(qcom_spmi_regulator_match, &pdev->dev); 1652 if (!match) 1653 return -ENODEV; 1654 1655 for (reg = match->data; reg->name; reg++) { 1656 vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL); 1657 if (!vreg) 1658 return -ENOMEM; 1659 1660 vreg->dev = dev; 1661 vreg->base = reg->base; 1662 vreg->regmap = regmap; 1663 1664 if (reg->ocp) { 1665 vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp); 1666 if (vreg->ocp_irq < 0) { 1667 ret = vreg->ocp_irq; 1668 goto err; 1669 } 1670 } 1671 1672 vreg->desc.id = -1; 1673 vreg->desc.owner = THIS_MODULE; 1674 vreg->desc.type = REGULATOR_VOLTAGE; 1675 vreg->desc.name = name = reg->name; 1676 vreg->desc.supply_name = reg->supply; 1677 vreg->desc.of_match = reg->name; 1678 vreg->desc.of_parse_cb = spmi_regulator_of_parse; 1679 vreg->desc.of_map_mode = spmi_regulator_of_map_mode; 1680 1681 ret = spmi_regulator_match(vreg, reg->force_type); 1682 if (ret) 1683 continue; 1684 1685 config.dev = dev; 1686 config.driver_data = vreg; 1687 rdev = devm_regulator_register(dev, &vreg->desc, &config); 1688 if (IS_ERR(rdev)) { 1689 dev_err(dev, "failed to register %s\n", name); 1690 ret = PTR_ERR(rdev); 1691 goto err; 1692 } 1693 1694 INIT_LIST_HEAD(&vreg->node); 1695 list_add(&vreg->node, vreg_list); 1696 } 1697 1698 return 0; 1699 1700 err: 1701 list_for_each_entry(vreg, vreg_list, node) 1702 if (vreg->ocp_irq) 1703 cancel_delayed_work_sync(&vreg->ocp_work); 1704 return ret; 1705 } 1706 1707 static int qcom_spmi_regulator_remove(struct platform_device *pdev) 1708 { 1709 struct spmi_regulator *vreg; 1710 struct list_head *vreg_list = platform_get_drvdata(pdev); 1711 1712 list_for_each_entry(vreg, vreg_list, node) 1713 if (vreg->ocp_irq) 1714 cancel_delayed_work_sync(&vreg->ocp_work); 1715 1716 return 0; 1717 } 1718 1719 static struct platform_driver qcom_spmi_regulator_driver = { 1720 .driver = { 1721 .name = "qcom-spmi-regulator", 1722 .of_match_table = qcom_spmi_regulator_match, 1723 }, 1724 .probe = qcom_spmi_regulator_probe, 1725 .remove = qcom_spmi_regulator_remove, 1726 }; 1727 module_platform_driver(qcom_spmi_regulator_driver); 1728 1729 MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver"); 1730 MODULE_LICENSE("GPL v2"); 1731 MODULE_ALIAS("platform:qcom-spmi-regulator"); 1732