1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved. 4 */ 5 6 #include <linux/module.h> 7 #include <linux/delay.h> 8 #include <linux/devm-helpers.h> 9 #include <linux/err.h> 10 #include <linux/kernel.h> 11 #include <linux/interrupt.h> 12 #include <linux/bitops.h> 13 #include <linux/slab.h> 14 #include <linux/of.h> 15 #include <linux/of_device.h> 16 #include <linux/platform_device.h> 17 #include <linux/ktime.h> 18 #include <linux/regulator/driver.h> 19 #include <linux/regmap.h> 20 #include <linux/list.h> 21 #include <linux/mfd/syscon.h> 22 #include <linux/io.h> 23 24 /* Pin control enable input pins. */ 25 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_NONE 0x00 26 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN0 0x01 27 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN1 0x02 28 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN2 0x04 29 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN3 0x08 30 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT 0x10 31 32 /* Pin control high power mode input pins. */ 33 #define SPMI_REGULATOR_PIN_CTRL_HPM_NONE 0x00 34 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN0 0x01 35 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN1 0x02 36 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN2 0x04 37 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN3 0x08 38 #define SPMI_REGULATOR_PIN_CTRL_HPM_SLEEP_B 0x10 39 #define SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT 0x20 40 41 /* 42 * Used with enable parameters to specify that hardware default register values 43 * should be left unaltered. 44 */ 45 #define SPMI_REGULATOR_USE_HW_DEFAULT 2 46 47 /* Soft start strength of a voltage switch type regulator */ 48 enum spmi_vs_soft_start_str { 49 SPMI_VS_SOFT_START_STR_0P05_UA = 0, 50 SPMI_VS_SOFT_START_STR_0P25_UA, 51 SPMI_VS_SOFT_START_STR_0P55_UA, 52 SPMI_VS_SOFT_START_STR_0P75_UA, 53 SPMI_VS_SOFT_START_STR_HW_DEFAULT, 54 }; 55 56 /** 57 * struct spmi_regulator_init_data - spmi-regulator initialization data 58 * @pin_ctrl_enable: Bit mask specifying which hardware pins should be 59 * used to enable the regulator, if any 60 * Value should be an ORing of 61 * SPMI_REGULATOR_PIN_CTRL_ENABLE_* constants. If 62 * the bit specified by 63 * SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT is 64 * set, then pin control enable hardware registers 65 * will not be modified. 66 * @pin_ctrl_hpm: Bit mask specifying which hardware pins should be 67 * used to force the regulator into high power 68 * mode, if any 69 * Value should be an ORing of 70 * SPMI_REGULATOR_PIN_CTRL_HPM_* constants. If 71 * the bit specified by 72 * SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT is 73 * set, then pin control mode hardware registers 74 * will not be modified. 75 * @vs_soft_start_strength: This parameter sets the soft start strength for 76 * voltage switch type regulators. Its value 77 * should be one of SPMI_VS_SOFT_START_STR_*. If 78 * its value is SPMI_VS_SOFT_START_STR_HW_DEFAULT, 79 * then the soft start strength will be left at its 80 * default hardware value. 81 */ 82 struct spmi_regulator_init_data { 83 unsigned pin_ctrl_enable; 84 unsigned pin_ctrl_hpm; 85 enum spmi_vs_soft_start_str vs_soft_start_strength; 86 }; 87 88 /* These types correspond to unique register layouts. */ 89 enum spmi_regulator_logical_type { 90 SPMI_REGULATOR_LOGICAL_TYPE_SMPS, 91 SPMI_REGULATOR_LOGICAL_TYPE_LDO, 92 SPMI_REGULATOR_LOGICAL_TYPE_VS, 93 SPMI_REGULATOR_LOGICAL_TYPE_BOOST, 94 SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS, 95 SPMI_REGULATOR_LOGICAL_TYPE_BOOST_BYP, 96 SPMI_REGULATOR_LOGICAL_TYPE_LN_LDO, 97 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS, 98 SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS, 99 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO, 100 SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426, 101 SPMI_REGULATOR_LOGICAL_TYPE_HFS430, 102 }; 103 104 enum spmi_regulator_type { 105 SPMI_REGULATOR_TYPE_BUCK = 0x03, 106 SPMI_REGULATOR_TYPE_LDO = 0x04, 107 SPMI_REGULATOR_TYPE_VS = 0x05, 108 SPMI_REGULATOR_TYPE_BOOST = 0x1b, 109 SPMI_REGULATOR_TYPE_FTS = 0x1c, 110 SPMI_REGULATOR_TYPE_BOOST_BYP = 0x1f, 111 SPMI_REGULATOR_TYPE_ULT_LDO = 0x21, 112 SPMI_REGULATOR_TYPE_ULT_BUCK = 0x22, 113 }; 114 115 enum spmi_regulator_subtype { 116 SPMI_REGULATOR_SUBTYPE_GP_CTL = 0x08, 117 SPMI_REGULATOR_SUBTYPE_RF_CTL = 0x09, 118 SPMI_REGULATOR_SUBTYPE_N50 = 0x01, 119 SPMI_REGULATOR_SUBTYPE_N150 = 0x02, 120 SPMI_REGULATOR_SUBTYPE_N300 = 0x03, 121 SPMI_REGULATOR_SUBTYPE_N600 = 0x04, 122 SPMI_REGULATOR_SUBTYPE_N1200 = 0x05, 123 SPMI_REGULATOR_SUBTYPE_N600_ST = 0x06, 124 SPMI_REGULATOR_SUBTYPE_N1200_ST = 0x07, 125 SPMI_REGULATOR_SUBTYPE_N900_ST = 0x14, 126 SPMI_REGULATOR_SUBTYPE_N300_ST = 0x15, 127 SPMI_REGULATOR_SUBTYPE_P50 = 0x08, 128 SPMI_REGULATOR_SUBTYPE_P150 = 0x09, 129 SPMI_REGULATOR_SUBTYPE_P300 = 0x0a, 130 SPMI_REGULATOR_SUBTYPE_P600 = 0x0b, 131 SPMI_REGULATOR_SUBTYPE_P1200 = 0x0c, 132 SPMI_REGULATOR_SUBTYPE_LN = 0x10, 133 SPMI_REGULATOR_SUBTYPE_LV_P50 = 0x28, 134 SPMI_REGULATOR_SUBTYPE_LV_P150 = 0x29, 135 SPMI_REGULATOR_SUBTYPE_LV_P300 = 0x2a, 136 SPMI_REGULATOR_SUBTYPE_LV_P600 = 0x2b, 137 SPMI_REGULATOR_SUBTYPE_LV_P1200 = 0x2c, 138 SPMI_REGULATOR_SUBTYPE_LV_P450 = 0x2d, 139 SPMI_REGULATOR_SUBTYPE_HT_N300_ST = 0x30, 140 SPMI_REGULATOR_SUBTYPE_HT_N600_ST = 0x31, 141 SPMI_REGULATOR_SUBTYPE_HT_N1200_ST = 0x32, 142 SPMI_REGULATOR_SUBTYPE_HT_LVP150 = 0x3b, 143 SPMI_REGULATOR_SUBTYPE_HT_LVP300 = 0x3c, 144 SPMI_REGULATOR_SUBTYPE_L660_N300_ST = 0x42, 145 SPMI_REGULATOR_SUBTYPE_L660_N600_ST = 0x43, 146 SPMI_REGULATOR_SUBTYPE_L660_P50 = 0x46, 147 SPMI_REGULATOR_SUBTYPE_L660_P150 = 0x47, 148 SPMI_REGULATOR_SUBTYPE_L660_P600 = 0x49, 149 SPMI_REGULATOR_SUBTYPE_L660_LVP150 = 0x4d, 150 SPMI_REGULATOR_SUBTYPE_L660_LVP600 = 0x4f, 151 SPMI_REGULATOR_SUBTYPE_LV100 = 0x01, 152 SPMI_REGULATOR_SUBTYPE_LV300 = 0x02, 153 SPMI_REGULATOR_SUBTYPE_MV300 = 0x08, 154 SPMI_REGULATOR_SUBTYPE_MV500 = 0x09, 155 SPMI_REGULATOR_SUBTYPE_HDMI = 0x10, 156 SPMI_REGULATOR_SUBTYPE_OTG = 0x11, 157 SPMI_REGULATOR_SUBTYPE_5V_BOOST = 0x01, 158 SPMI_REGULATOR_SUBTYPE_FTS_CTL = 0x08, 159 SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL = 0x09, 160 SPMI_REGULATOR_SUBTYPE_FTS426_CTL = 0x0a, 161 SPMI_REGULATOR_SUBTYPE_BB_2A = 0x01, 162 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1 = 0x0d, 163 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e, 164 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3 = 0x0f, 165 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4 = 0x10, 166 SPMI_REGULATOR_SUBTYPE_HFS430 = 0x0a, 167 }; 168 169 enum spmi_common_regulator_registers { 170 SPMI_COMMON_REG_DIG_MAJOR_REV = 0x01, 171 SPMI_COMMON_REG_TYPE = 0x04, 172 SPMI_COMMON_REG_SUBTYPE = 0x05, 173 SPMI_COMMON_REG_VOLTAGE_RANGE = 0x40, 174 SPMI_COMMON_REG_VOLTAGE_SET = 0x41, 175 SPMI_COMMON_REG_MODE = 0x45, 176 SPMI_COMMON_REG_ENABLE = 0x46, 177 SPMI_COMMON_REG_PULL_DOWN = 0x48, 178 SPMI_COMMON_REG_SOFT_START = 0x4c, 179 SPMI_COMMON_REG_STEP_CTRL = 0x61, 180 }; 181 182 /* 183 * Second common register layout used by newer devices starting with ftsmps426 184 * Note that some of the registers from the first common layout remain 185 * unchanged and their definition is not duplicated. 186 */ 187 enum spmi_ftsmps426_regulator_registers { 188 SPMI_FTSMPS426_REG_VOLTAGE_LSB = 0x40, 189 SPMI_FTSMPS426_REG_VOLTAGE_MSB = 0x41, 190 SPMI_FTSMPS426_REG_VOLTAGE_ULS_LSB = 0x68, 191 SPMI_FTSMPS426_REG_VOLTAGE_ULS_MSB = 0x69, 192 }; 193 194 enum spmi_vs_registers { 195 SPMI_VS_REG_OCP = 0x4a, 196 SPMI_VS_REG_SOFT_START = 0x4c, 197 }; 198 199 enum spmi_boost_registers { 200 SPMI_BOOST_REG_CURRENT_LIMIT = 0x4a, 201 }; 202 203 enum spmi_boost_byp_registers { 204 SPMI_BOOST_BYP_REG_CURRENT_LIMIT = 0x4b, 205 }; 206 207 enum spmi_saw3_registers { 208 SAW3_SECURE = 0x00, 209 SAW3_ID = 0x04, 210 SAW3_SPM_STS = 0x0C, 211 SAW3_AVS_STS = 0x10, 212 SAW3_PMIC_STS = 0x14, 213 SAW3_RST = 0x18, 214 SAW3_VCTL = 0x1C, 215 SAW3_AVS_CTL = 0x20, 216 SAW3_AVS_LIMIT = 0x24, 217 SAW3_AVS_DLY = 0x28, 218 SAW3_AVS_HYSTERESIS = 0x2C, 219 SAW3_SPM_STS2 = 0x38, 220 SAW3_SPM_PMIC_DATA_3 = 0x4C, 221 SAW3_VERSION = 0xFD0, 222 }; 223 224 /* Used for indexing into ctrl_reg. These are offets from 0x40 */ 225 enum spmi_common_control_register_index { 226 SPMI_COMMON_IDX_VOLTAGE_RANGE = 0, 227 SPMI_COMMON_IDX_VOLTAGE_SET = 1, 228 SPMI_COMMON_IDX_MODE = 5, 229 SPMI_COMMON_IDX_ENABLE = 6, 230 }; 231 232 /* Common regulator control register layout */ 233 #define SPMI_COMMON_ENABLE_MASK 0x80 234 #define SPMI_COMMON_ENABLE 0x80 235 #define SPMI_COMMON_DISABLE 0x00 236 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN3_MASK 0x08 237 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN2_MASK 0x04 238 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN1_MASK 0x02 239 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN0_MASK 0x01 240 #define SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK 0x0f 241 242 /* Common regulator mode register layout */ 243 #define SPMI_COMMON_MODE_HPM_MASK 0x80 244 #define SPMI_COMMON_MODE_AUTO_MASK 0x40 245 #define SPMI_COMMON_MODE_BYPASS_MASK 0x20 246 #define SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK 0x10 247 #define SPMI_COMMON_MODE_FOLLOW_HW_EN3_MASK 0x08 248 #define SPMI_COMMON_MODE_FOLLOW_HW_EN2_MASK 0x04 249 #define SPMI_COMMON_MODE_FOLLOW_HW_EN1_MASK 0x02 250 #define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK 0x01 251 #define SPMI_COMMON_MODE_FOLLOW_ALL_MASK 0x1f 252 253 #define SPMI_FTSMPS426_MODE_BYPASS_MASK 3 254 #define SPMI_FTSMPS426_MODE_RETENTION_MASK 4 255 #define SPMI_FTSMPS426_MODE_LPM_MASK 5 256 #define SPMI_FTSMPS426_MODE_AUTO_MASK 6 257 #define SPMI_FTSMPS426_MODE_HPM_MASK 7 258 259 #define SPMI_FTSMPS426_MODE_MASK 0x07 260 261 /* Common regulator pull down control register layout */ 262 #define SPMI_COMMON_PULL_DOWN_ENABLE_MASK 0x80 263 264 /* LDO regulator current limit control register layout */ 265 #define SPMI_LDO_CURRENT_LIMIT_ENABLE_MASK 0x80 266 267 /* LDO regulator soft start control register layout */ 268 #define SPMI_LDO_SOFT_START_ENABLE_MASK 0x80 269 270 /* VS regulator over current protection control register layout */ 271 #define SPMI_VS_OCP_OVERRIDE 0x01 272 #define SPMI_VS_OCP_NO_OVERRIDE 0x00 273 274 /* VS regulator soft start control register layout */ 275 #define SPMI_VS_SOFT_START_ENABLE_MASK 0x80 276 #define SPMI_VS_SOFT_START_SEL_MASK 0x03 277 278 /* Boost regulator current limit control register layout */ 279 #define SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK 0x80 280 #define SPMI_BOOST_CURRENT_LIMIT_MASK 0x07 281 282 #define SPMI_VS_OCP_DEFAULT_MAX_RETRIES 10 283 #define SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS 30 284 #define SPMI_VS_OCP_FALL_DELAY_US 90 285 #define SPMI_VS_OCP_FAULT_DELAY_US 20000 286 287 #define SPMI_FTSMPS_STEP_CTRL_STEP_MASK 0x18 288 #define SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT 3 289 #define SPMI_FTSMPS_STEP_CTRL_DELAY_MASK 0x07 290 #define SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT 0 291 292 /* Clock rate in kHz of the FTSMPS regulator reference clock. */ 293 #define SPMI_FTSMPS_CLOCK_RATE 19200 294 295 /* Minimum voltage stepper delay for each step. */ 296 #define SPMI_FTSMPS_STEP_DELAY 8 297 #define SPMI_DEFAULT_STEP_DELAY 20 298 299 /* 300 * The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to 301 * adjust the step rate in order to account for oscillator variance. 302 */ 303 #define SPMI_FTSMPS_STEP_MARGIN_NUM 4 304 #define SPMI_FTSMPS_STEP_MARGIN_DEN 5 305 306 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK 0x03 307 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT 0 308 309 /* Clock rate in kHz of the FTSMPS426 regulator reference clock. */ 310 #define SPMI_FTSMPS426_CLOCK_RATE 4800 311 312 #define SPMI_HFS430_CLOCK_RATE 1600 313 314 /* Minimum voltage stepper delay for each step. */ 315 #define SPMI_FTSMPS426_STEP_DELAY 2 316 317 /* 318 * The ratio SPMI_FTSMPS426_STEP_MARGIN_NUM/SPMI_FTSMPS426_STEP_MARGIN_DEN is 319 * used to adjust the step rate in order to account for oscillator variance. 320 */ 321 #define SPMI_FTSMPS426_STEP_MARGIN_NUM 10 322 #define SPMI_FTSMPS426_STEP_MARGIN_DEN 11 323 324 325 /* VSET value to decide the range of ULT SMPS */ 326 #define ULT_SMPS_RANGE_SPLIT 0x60 327 328 /** 329 * struct spmi_voltage_range - regulator set point voltage mapping description 330 * @min_uV: Minimum programmable output voltage resulting from 331 * set point register value 0x00 332 * @max_uV: Maximum programmable output voltage 333 * @step_uV: Output voltage increase resulting from the set point 334 * register value increasing by 1 335 * @set_point_min_uV: Minimum allowed voltage 336 * @set_point_max_uV: Maximum allowed voltage. This may be tweaked in order 337 * to pick which range should be used in the case of 338 * overlapping set points. 339 * @n_voltages: Number of preferred voltage set points present in this 340 * range 341 * @range_sel: Voltage range register value corresponding to this range 342 * 343 * The following relationships must be true for the values used in this struct: 344 * (max_uV - min_uV) % step_uV == 0 345 * (set_point_min_uV - min_uV) % step_uV == 0* 346 * (set_point_max_uV - min_uV) % step_uV == 0* 347 * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1 348 * 349 * *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to 350 * specify that the voltage range has meaning, but is not preferred. 351 */ 352 struct spmi_voltage_range { 353 int min_uV; 354 int max_uV; 355 int step_uV; 356 int set_point_min_uV; 357 int set_point_max_uV; 358 unsigned n_voltages; 359 u8 range_sel; 360 }; 361 362 /* 363 * The ranges specified in the spmi_voltage_set_points struct must be listed 364 * so that range[i].set_point_max_uV < range[i+1].set_point_min_uV. 365 */ 366 struct spmi_voltage_set_points { 367 struct spmi_voltage_range *range; 368 int count; 369 unsigned n_voltages; 370 }; 371 372 struct spmi_regulator { 373 struct regulator_desc desc; 374 struct device *dev; 375 struct delayed_work ocp_work; 376 struct regmap *regmap; 377 struct spmi_voltage_set_points *set_points; 378 enum spmi_regulator_logical_type logical_type; 379 int ocp_irq; 380 int ocp_count; 381 int ocp_max_retries; 382 int ocp_retry_delay_ms; 383 int hpm_min_load; 384 int slew_rate; 385 ktime_t vs_enable_time; 386 u16 base; 387 struct list_head node; 388 }; 389 390 struct spmi_regulator_mapping { 391 enum spmi_regulator_type type; 392 enum spmi_regulator_subtype subtype; 393 enum spmi_regulator_logical_type logical_type; 394 u32 revision_min; 395 u32 revision_max; 396 const struct regulator_ops *ops; 397 struct spmi_voltage_set_points *set_points; 398 int hpm_min_load; 399 }; 400 401 struct spmi_regulator_data { 402 const char *name; 403 u16 base; 404 const char *supply; 405 const char *ocp; 406 u16 force_type; 407 }; 408 409 #define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \ 410 _logical_type, _ops_val, _set_points_val, _hpm_min_load) \ 411 { \ 412 .type = SPMI_REGULATOR_TYPE_##_type, \ 413 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \ 414 .revision_min = _dig_major_min, \ 415 .revision_max = _dig_major_max, \ 416 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \ 417 .ops = &spmi_##_ops_val##_ops, \ 418 .set_points = &_set_points_val##_set_points, \ 419 .hpm_min_load = _hpm_min_load, \ 420 } 421 422 #define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \ 423 { \ 424 .type = SPMI_REGULATOR_TYPE_VS, \ 425 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \ 426 .revision_min = _dig_major_min, \ 427 .revision_max = _dig_major_max, \ 428 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_VS, \ 429 .ops = &spmi_vs_ops, \ 430 } 431 432 #define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \ 433 _set_point_max_uV, _max_uV, _step_uV) \ 434 { \ 435 .min_uV = _min_uV, \ 436 .max_uV = _max_uV, \ 437 .set_point_min_uV = _set_point_min_uV, \ 438 .set_point_max_uV = _set_point_max_uV, \ 439 .step_uV = _step_uV, \ 440 .range_sel = _range_sel, \ 441 } 442 443 #define DEFINE_SPMI_SET_POINTS(name) \ 444 struct spmi_voltage_set_points name##_set_points = { \ 445 .range = name##_ranges, \ 446 .count = ARRAY_SIZE(name##_ranges), \ 447 } 448 449 /* 450 * These tables contain the physically available PMIC regulator voltage setpoint 451 * ranges. Where two ranges overlap in hardware, one of the ranges is trimmed 452 * to ensure that the setpoints available to software are monotonically 453 * increasing and unique. The set_voltage callback functions expect these 454 * properties to hold. 455 */ 456 static struct spmi_voltage_range pldo_ranges[] = { 457 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500), 458 SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000), 459 SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000), 460 }; 461 462 static struct spmi_voltage_range nldo1_ranges[] = { 463 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500), 464 }; 465 466 static struct spmi_voltage_range nldo2_ranges[] = { 467 SPMI_VOLTAGE_RANGE(0, 375000, 0, 0, 1537500, 12500), 468 SPMI_VOLTAGE_RANGE(1, 375000, 375000, 768750, 768750, 6250), 469 SPMI_VOLTAGE_RANGE(2, 750000, 775000, 1537500, 1537500, 12500), 470 }; 471 472 static struct spmi_voltage_range nldo3_ranges[] = { 473 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500), 474 SPMI_VOLTAGE_RANGE(1, 375000, 0, 0, 1537500, 12500), 475 SPMI_VOLTAGE_RANGE(2, 750000, 0, 0, 1537500, 12500), 476 }; 477 478 static struct spmi_voltage_range ln_ldo_ranges[] = { 479 SPMI_VOLTAGE_RANGE(1, 690000, 690000, 1110000, 1110000, 60000), 480 SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000), 481 }; 482 483 static struct spmi_voltage_range smps_ranges[] = { 484 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500), 485 SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000), 486 }; 487 488 static struct spmi_voltage_range ftsmps_ranges[] = { 489 SPMI_VOLTAGE_RANGE(0, 0, 350000, 1275000, 1275000, 5000), 490 SPMI_VOLTAGE_RANGE(1, 0, 1280000, 2040000, 2040000, 10000), 491 }; 492 493 static struct spmi_voltage_range ftsmps2p5_ranges[] = { 494 SPMI_VOLTAGE_RANGE(0, 80000, 350000, 1355000, 1355000, 5000), 495 SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000), 496 }; 497 498 static struct spmi_voltage_range ftsmps426_ranges[] = { 499 SPMI_VOLTAGE_RANGE(0, 0, 320000, 1352000, 1352000, 4000), 500 }; 501 502 static struct spmi_voltage_range boost_ranges[] = { 503 SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000), 504 }; 505 506 static struct spmi_voltage_range boost_byp_ranges[] = { 507 SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000), 508 }; 509 510 static struct spmi_voltage_range ult_lo_smps_ranges[] = { 511 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500), 512 SPMI_VOLTAGE_RANGE(1, 750000, 0, 0, 1525000, 25000), 513 }; 514 515 static struct spmi_voltage_range ult_ho_smps_ranges[] = { 516 SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000), 517 }; 518 519 static struct spmi_voltage_range ult_nldo_ranges[] = { 520 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500), 521 }; 522 523 static struct spmi_voltage_range ult_pldo_ranges[] = { 524 SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500), 525 }; 526 527 static struct spmi_voltage_range pldo660_ranges[] = { 528 SPMI_VOLTAGE_RANGE(0, 1504000, 1504000, 3544000, 3544000, 8000), 529 }; 530 531 static struct spmi_voltage_range nldo660_ranges[] = { 532 SPMI_VOLTAGE_RANGE(0, 320000, 320000, 1304000, 1304000, 8000), 533 }; 534 535 static struct spmi_voltage_range ht_lvpldo_ranges[] = { 536 SPMI_VOLTAGE_RANGE(0, 1504000, 1504000, 2000000, 2000000, 8000), 537 }; 538 539 static struct spmi_voltage_range ht_nldo_ranges[] = { 540 SPMI_VOLTAGE_RANGE(0, 312000, 312000, 1304000, 1304000, 8000), 541 }; 542 543 static struct spmi_voltage_range hfs430_ranges[] = { 544 SPMI_VOLTAGE_RANGE(0, 320000, 320000, 2040000, 2040000, 8000), 545 }; 546 547 static DEFINE_SPMI_SET_POINTS(pldo); 548 static DEFINE_SPMI_SET_POINTS(nldo1); 549 static DEFINE_SPMI_SET_POINTS(nldo2); 550 static DEFINE_SPMI_SET_POINTS(nldo3); 551 static DEFINE_SPMI_SET_POINTS(ln_ldo); 552 static DEFINE_SPMI_SET_POINTS(smps); 553 static DEFINE_SPMI_SET_POINTS(ftsmps); 554 static DEFINE_SPMI_SET_POINTS(ftsmps2p5); 555 static DEFINE_SPMI_SET_POINTS(ftsmps426); 556 static DEFINE_SPMI_SET_POINTS(boost); 557 static DEFINE_SPMI_SET_POINTS(boost_byp); 558 static DEFINE_SPMI_SET_POINTS(ult_lo_smps); 559 static DEFINE_SPMI_SET_POINTS(ult_ho_smps); 560 static DEFINE_SPMI_SET_POINTS(ult_nldo); 561 static DEFINE_SPMI_SET_POINTS(ult_pldo); 562 static DEFINE_SPMI_SET_POINTS(pldo660); 563 static DEFINE_SPMI_SET_POINTS(nldo660); 564 static DEFINE_SPMI_SET_POINTS(ht_lvpldo); 565 static DEFINE_SPMI_SET_POINTS(ht_nldo); 566 static DEFINE_SPMI_SET_POINTS(hfs430); 567 568 static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf, 569 int len) 570 { 571 return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len); 572 } 573 574 static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr, 575 u8 *buf, int len) 576 { 577 return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len); 578 } 579 580 static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val, 581 u8 mask) 582 { 583 return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val); 584 } 585 586 static int spmi_regulator_vs_enable(struct regulator_dev *rdev) 587 { 588 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 589 590 if (vreg->ocp_irq) { 591 vreg->ocp_count = 0; 592 vreg->vs_enable_time = ktime_get(); 593 } 594 595 return regulator_enable_regmap(rdev); 596 } 597 598 static int spmi_regulator_vs_ocp(struct regulator_dev *rdev, int lim_uA, 599 int severity, bool enable) 600 { 601 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 602 u8 reg = SPMI_VS_OCP_OVERRIDE; 603 604 if (lim_uA || !enable || severity != REGULATOR_SEVERITY_PROT) 605 return -EINVAL; 606 607 return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, ®, 1); 608 } 609 610 static int spmi_regulator_select_voltage(struct spmi_regulator *vreg, 611 int min_uV, int max_uV) 612 { 613 const struct spmi_voltage_range *range; 614 int uV = min_uV; 615 int lim_min_uV, lim_max_uV, i, range_id, range_max_uV; 616 int selector, voltage_sel; 617 618 /* Check if request voltage is outside of physically settable range. */ 619 lim_min_uV = vreg->set_points->range[0].set_point_min_uV; 620 lim_max_uV = 621 vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV; 622 623 if (uV < lim_min_uV && max_uV >= lim_min_uV) 624 uV = lim_min_uV; 625 626 if (uV < lim_min_uV || uV > lim_max_uV) { 627 dev_err(vreg->dev, 628 "request v=[%d, %d] is outside possible v=[%d, %d]\n", 629 min_uV, max_uV, lim_min_uV, lim_max_uV); 630 return -EINVAL; 631 } 632 633 /* Find the range which uV is inside of. */ 634 for (i = vreg->set_points->count - 1; i > 0; i--) { 635 range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV; 636 if (uV > range_max_uV && range_max_uV > 0) 637 break; 638 } 639 640 range_id = i; 641 range = &vreg->set_points->range[range_id]; 642 643 /* 644 * Force uV to be an allowed set point by applying a ceiling function to 645 * the uV value. 646 */ 647 voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV); 648 uV = voltage_sel * range->step_uV + range->min_uV; 649 650 if (uV > max_uV) { 651 dev_err(vreg->dev, 652 "request v=[%d, %d] cannot be met by any set point; " 653 "next set point: %d\n", 654 min_uV, max_uV, uV); 655 return -EINVAL; 656 } 657 658 selector = 0; 659 for (i = 0; i < range_id; i++) 660 selector += vreg->set_points->range[i].n_voltages; 661 selector += (uV - range->set_point_min_uV) / range->step_uV; 662 663 return selector; 664 } 665 666 static int spmi_sw_selector_to_hw(struct spmi_regulator *vreg, 667 unsigned selector, u8 *range_sel, 668 u8 *voltage_sel) 669 { 670 const struct spmi_voltage_range *range, *end; 671 unsigned offset; 672 673 range = vreg->set_points->range; 674 end = range + vreg->set_points->count; 675 676 for (; range < end; range++) { 677 if (selector < range->n_voltages) { 678 /* 679 * hardware selectors between set point min and real 680 * min are invalid so we ignore them 681 */ 682 offset = range->set_point_min_uV - range->min_uV; 683 offset /= range->step_uV; 684 *voltage_sel = selector + offset; 685 *range_sel = range->range_sel; 686 return 0; 687 } 688 689 selector -= range->n_voltages; 690 } 691 692 return -EINVAL; 693 } 694 695 static int spmi_hw_selector_to_sw(struct spmi_regulator *vreg, u8 hw_sel, 696 const struct spmi_voltage_range *range) 697 { 698 unsigned sw_sel = 0; 699 unsigned offset, max_hw_sel; 700 const struct spmi_voltage_range *r = vreg->set_points->range; 701 const struct spmi_voltage_range *end = r + vreg->set_points->count; 702 703 for (; r < end; r++) { 704 if (r == range && range->n_voltages) { 705 /* 706 * hardware selectors between set point min and real 707 * min and between set point max and real max are 708 * invalid so we return an error if they're 709 * programmed into the hardware 710 */ 711 offset = range->set_point_min_uV - range->min_uV; 712 offset /= range->step_uV; 713 if (hw_sel < offset) 714 return -EINVAL; 715 716 max_hw_sel = range->set_point_max_uV - range->min_uV; 717 max_hw_sel /= range->step_uV; 718 if (hw_sel > max_hw_sel) 719 return -EINVAL; 720 721 return sw_sel + hw_sel - offset; 722 } 723 sw_sel += r->n_voltages; 724 } 725 726 return -EINVAL; 727 } 728 729 static const struct spmi_voltage_range * 730 spmi_regulator_find_range(struct spmi_regulator *vreg) 731 { 732 u8 range_sel; 733 const struct spmi_voltage_range *range, *end; 734 735 range = vreg->set_points->range; 736 end = range + vreg->set_points->count; 737 738 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1); 739 740 for (; range < end; range++) 741 if (range->range_sel == range_sel) 742 return range; 743 744 return NULL; 745 } 746 747 static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg, 748 int min_uV, int max_uV) 749 { 750 const struct spmi_voltage_range *range; 751 int uV = min_uV; 752 int i, selector; 753 754 range = spmi_regulator_find_range(vreg); 755 if (!range) 756 goto different_range; 757 758 if (uV < range->min_uV && max_uV >= range->min_uV) 759 uV = range->min_uV; 760 761 if (uV < range->min_uV || uV > range->max_uV) { 762 /* Current range doesn't support the requested voltage. */ 763 goto different_range; 764 } 765 766 /* 767 * Force uV to be an allowed set point by applying a ceiling function to 768 * the uV value. 769 */ 770 uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV); 771 uV = uV * range->step_uV + range->min_uV; 772 773 if (uV > max_uV) { 774 /* 775 * No set point in the current voltage range is within the 776 * requested min_uV to max_uV range. 777 */ 778 goto different_range; 779 } 780 781 selector = 0; 782 for (i = 0; i < vreg->set_points->count; i++) { 783 if (uV >= vreg->set_points->range[i].set_point_min_uV 784 && uV <= vreg->set_points->range[i].set_point_max_uV) { 785 selector += 786 (uV - vreg->set_points->range[i].set_point_min_uV) 787 / vreg->set_points->range[i].step_uV; 788 break; 789 } 790 791 selector += vreg->set_points->range[i].n_voltages; 792 } 793 794 if (selector >= vreg->set_points->n_voltages) 795 goto different_range; 796 797 return selector; 798 799 different_range: 800 return spmi_regulator_select_voltage(vreg, min_uV, max_uV); 801 } 802 803 static int spmi_regulator_common_map_voltage(struct regulator_dev *rdev, 804 int min_uV, int max_uV) 805 { 806 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 807 808 /* 809 * Favor staying in the current voltage range if possible. This avoids 810 * voltage spikes that occur when changing the voltage range. 811 */ 812 return spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV); 813 } 814 815 static int 816 spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector) 817 { 818 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 819 int ret; 820 u8 buf[2]; 821 u8 range_sel, voltage_sel; 822 823 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel); 824 if (ret) 825 return ret; 826 827 buf[0] = range_sel; 828 buf[1] = voltage_sel; 829 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2); 830 } 831 832 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev, 833 unsigned selector); 834 835 static int spmi_regulator_ftsmps426_set_voltage(struct regulator_dev *rdev, 836 unsigned selector) 837 { 838 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 839 u8 buf[2]; 840 int mV; 841 842 mV = spmi_regulator_common_list_voltage(rdev, selector) / 1000; 843 844 buf[0] = mV & 0xff; 845 buf[1] = mV >> 8; 846 return spmi_vreg_write(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2); 847 } 848 849 static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev, 850 unsigned int old_selector, unsigned int new_selector) 851 { 852 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 853 int diff_uV; 854 855 diff_uV = abs(spmi_regulator_common_list_voltage(rdev, new_selector) - 856 spmi_regulator_common_list_voltage(rdev, old_selector)); 857 858 return DIV_ROUND_UP(diff_uV, vreg->slew_rate); 859 } 860 861 static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev) 862 { 863 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 864 const struct spmi_voltage_range *range; 865 u8 voltage_sel; 866 867 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1); 868 869 range = spmi_regulator_find_range(vreg); 870 if (!range) 871 return -EINVAL; 872 873 return spmi_hw_selector_to_sw(vreg, voltage_sel, range); 874 } 875 876 static int spmi_regulator_ftsmps426_get_voltage(struct regulator_dev *rdev) 877 { 878 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 879 const struct spmi_voltage_range *range; 880 u8 buf[2]; 881 int uV; 882 883 spmi_vreg_read(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2); 884 885 uV = (((unsigned int)buf[1] << 8) | (unsigned int)buf[0]) * 1000; 886 range = vreg->set_points->range; 887 888 return (uV - range->set_point_min_uV) / range->step_uV; 889 } 890 891 static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev, 892 int min_uV, int max_uV) 893 { 894 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 895 896 return spmi_regulator_select_voltage(vreg, min_uV, max_uV); 897 } 898 899 static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev, 900 unsigned selector) 901 { 902 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 903 u8 sel = selector; 904 905 /* 906 * Certain types of regulators do not have a range select register so 907 * only voltage set register needs to be written. 908 */ 909 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1); 910 } 911 912 static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev) 913 { 914 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 915 u8 selector; 916 int ret; 917 918 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1); 919 if (ret) 920 return ret; 921 922 return selector; 923 } 924 925 static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev, 926 unsigned selector) 927 { 928 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 929 int ret; 930 u8 range_sel, voltage_sel; 931 932 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel); 933 if (ret) 934 return ret; 935 936 /* 937 * Calculate VSET based on range 938 * In case of range 0: voltage_sel is a 7 bit value, can be written 939 * witout any modification. 940 * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to 941 * [011]. 942 */ 943 if (range_sel == 1) 944 voltage_sel |= ULT_SMPS_RANGE_SPLIT; 945 946 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET, 947 voltage_sel, 0xff); 948 } 949 950 static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev) 951 { 952 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 953 const struct spmi_voltage_range *range; 954 u8 voltage_sel; 955 956 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1); 957 958 range = spmi_regulator_find_range(vreg); 959 if (!range) 960 return -EINVAL; 961 962 if (range->range_sel == 1) 963 voltage_sel &= ~ULT_SMPS_RANGE_SPLIT; 964 965 return spmi_hw_selector_to_sw(vreg, voltage_sel, range); 966 } 967 968 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev, 969 unsigned selector) 970 { 971 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 972 int uV = 0; 973 int i; 974 975 if (selector >= vreg->set_points->n_voltages) 976 return 0; 977 978 for (i = 0; i < vreg->set_points->count; i++) { 979 if (selector < vreg->set_points->range[i].n_voltages) { 980 uV = selector * vreg->set_points->range[i].step_uV 981 + vreg->set_points->range[i].set_point_min_uV; 982 break; 983 } 984 985 selector -= vreg->set_points->range[i].n_voltages; 986 } 987 988 return uV; 989 } 990 991 static int 992 spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable) 993 { 994 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 995 u8 mask = SPMI_COMMON_MODE_BYPASS_MASK; 996 u8 val = 0; 997 998 if (enable) 999 val = mask; 1000 1001 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask); 1002 } 1003 1004 static int 1005 spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable) 1006 { 1007 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1008 u8 val; 1009 int ret; 1010 1011 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1); 1012 *enable = val & SPMI_COMMON_MODE_BYPASS_MASK; 1013 1014 return ret; 1015 } 1016 1017 static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev) 1018 { 1019 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1020 u8 reg; 1021 1022 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1); 1023 1024 reg &= SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK; 1025 1026 switch (reg) { 1027 case SPMI_COMMON_MODE_HPM_MASK: 1028 return REGULATOR_MODE_NORMAL; 1029 case SPMI_COMMON_MODE_AUTO_MASK: 1030 return REGULATOR_MODE_FAST; 1031 default: 1032 return REGULATOR_MODE_IDLE; 1033 } 1034 } 1035 1036 static unsigned int spmi_regulator_ftsmps426_get_mode(struct regulator_dev *rdev) 1037 { 1038 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1039 u8 reg; 1040 1041 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1); 1042 1043 switch (reg) { 1044 case SPMI_FTSMPS426_MODE_HPM_MASK: 1045 return REGULATOR_MODE_NORMAL; 1046 case SPMI_FTSMPS426_MODE_AUTO_MASK: 1047 return REGULATOR_MODE_FAST; 1048 default: 1049 return REGULATOR_MODE_IDLE; 1050 } 1051 } 1052 1053 static int 1054 spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode) 1055 { 1056 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1057 u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK; 1058 u8 val; 1059 1060 switch (mode) { 1061 case REGULATOR_MODE_NORMAL: 1062 val = SPMI_COMMON_MODE_HPM_MASK; 1063 break; 1064 case REGULATOR_MODE_FAST: 1065 val = SPMI_COMMON_MODE_AUTO_MASK; 1066 break; 1067 default: 1068 val = 0; 1069 break; 1070 } 1071 1072 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask); 1073 } 1074 1075 static int 1076 spmi_regulator_ftsmps426_set_mode(struct regulator_dev *rdev, unsigned int mode) 1077 { 1078 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1079 u8 mask = SPMI_FTSMPS426_MODE_MASK; 1080 u8 val; 1081 1082 switch (mode) { 1083 case REGULATOR_MODE_NORMAL: 1084 val = SPMI_FTSMPS426_MODE_HPM_MASK; 1085 break; 1086 case REGULATOR_MODE_FAST: 1087 val = SPMI_FTSMPS426_MODE_AUTO_MASK; 1088 break; 1089 case REGULATOR_MODE_IDLE: 1090 val = SPMI_FTSMPS426_MODE_LPM_MASK; 1091 break; 1092 default: 1093 return -EINVAL; 1094 } 1095 1096 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask); 1097 } 1098 1099 static int 1100 spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA) 1101 { 1102 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1103 unsigned int mode; 1104 1105 if (load_uA >= vreg->hpm_min_load) 1106 mode = REGULATOR_MODE_NORMAL; 1107 else 1108 mode = REGULATOR_MODE_IDLE; 1109 1110 return spmi_regulator_common_set_mode(rdev, mode); 1111 } 1112 1113 static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev) 1114 { 1115 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1116 unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK; 1117 1118 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN, 1119 mask, mask); 1120 } 1121 1122 static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev) 1123 { 1124 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1125 unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK; 1126 1127 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START, 1128 mask, mask); 1129 } 1130 1131 static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA) 1132 { 1133 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1134 enum spmi_regulator_logical_type type = vreg->logical_type; 1135 unsigned int current_reg; 1136 u8 reg; 1137 u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK | 1138 SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK; 1139 int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500; 1140 1141 if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST) 1142 current_reg = SPMI_BOOST_REG_CURRENT_LIMIT; 1143 else 1144 current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT; 1145 1146 if (ilim_uA > max || ilim_uA <= 0) 1147 return -EINVAL; 1148 1149 reg = (ilim_uA - 1) / 500; 1150 reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK; 1151 1152 return spmi_vreg_update_bits(vreg, current_reg, reg, mask); 1153 } 1154 1155 static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg) 1156 { 1157 int ret; 1158 1159 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, 1160 SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK); 1161 1162 vreg->vs_enable_time = ktime_get(); 1163 1164 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, 1165 SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK); 1166 1167 return ret; 1168 } 1169 1170 static void spmi_regulator_vs_ocp_work(struct work_struct *work) 1171 { 1172 struct delayed_work *dwork = to_delayed_work(work); 1173 struct spmi_regulator *vreg 1174 = container_of(dwork, struct spmi_regulator, ocp_work); 1175 1176 spmi_regulator_vs_clear_ocp(vreg); 1177 } 1178 1179 static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data) 1180 { 1181 struct spmi_regulator *vreg = data; 1182 ktime_t ocp_irq_time; 1183 s64 ocp_trigger_delay_us; 1184 1185 ocp_irq_time = ktime_get(); 1186 ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time, 1187 vreg->vs_enable_time); 1188 1189 /* 1190 * Reset the OCP count if there is a large delay between switch enable 1191 * and when OCP triggers. This is indicative of a hotplug event as 1192 * opposed to a fault. 1193 */ 1194 if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US) 1195 vreg->ocp_count = 0; 1196 1197 /* Wait for switch output to settle back to 0 V after OCP triggered. */ 1198 udelay(SPMI_VS_OCP_FALL_DELAY_US); 1199 1200 vreg->ocp_count++; 1201 1202 if (vreg->ocp_count == 1) { 1203 /* Immediately clear the over current condition. */ 1204 spmi_regulator_vs_clear_ocp(vreg); 1205 } else if (vreg->ocp_count <= vreg->ocp_max_retries) { 1206 /* Schedule the over current clear task to run later. */ 1207 schedule_delayed_work(&vreg->ocp_work, 1208 msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1); 1209 } else { 1210 dev_err(vreg->dev, 1211 "OCP triggered %d times; no further retries\n", 1212 vreg->ocp_count); 1213 } 1214 1215 return IRQ_HANDLED; 1216 } 1217 1218 #define SAW3_VCTL_DATA_MASK 0xFF 1219 #define SAW3_VCTL_CLEAR_MASK 0x700FF 1220 #define SAW3_AVS_CTL_EN_MASK 0x1 1221 #define SAW3_AVS_CTL_TGGL_MASK 0x8000000 1222 #define SAW3_AVS_CTL_CLEAR_MASK 0x7efc00 1223 1224 static struct regmap *saw_regmap; 1225 1226 static void spmi_saw_set_vdd(void *data) 1227 { 1228 u32 vctl, data3, avs_ctl, pmic_sts; 1229 bool avs_enabled = false; 1230 unsigned long timeout; 1231 u8 voltage_sel = *(u8 *)data; 1232 1233 regmap_read(saw_regmap, SAW3_AVS_CTL, &avs_ctl); 1234 regmap_read(saw_regmap, SAW3_VCTL, &vctl); 1235 regmap_read(saw_regmap, SAW3_SPM_PMIC_DATA_3, &data3); 1236 1237 /* select the band */ 1238 vctl &= ~SAW3_VCTL_CLEAR_MASK; 1239 vctl |= (u32)voltage_sel; 1240 1241 data3 &= ~SAW3_VCTL_CLEAR_MASK; 1242 data3 |= (u32)voltage_sel; 1243 1244 /* If AVS is enabled, switch it off during the voltage change */ 1245 avs_enabled = SAW3_AVS_CTL_EN_MASK & avs_ctl; 1246 if (avs_enabled) { 1247 avs_ctl &= ~SAW3_AVS_CTL_TGGL_MASK; 1248 regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl); 1249 } 1250 1251 regmap_write(saw_regmap, SAW3_RST, 1); 1252 regmap_write(saw_regmap, SAW3_VCTL, vctl); 1253 regmap_write(saw_regmap, SAW3_SPM_PMIC_DATA_3, data3); 1254 1255 timeout = jiffies + usecs_to_jiffies(100); 1256 do { 1257 regmap_read(saw_regmap, SAW3_PMIC_STS, &pmic_sts); 1258 pmic_sts &= SAW3_VCTL_DATA_MASK; 1259 if (pmic_sts == (u32)voltage_sel) 1260 break; 1261 1262 cpu_relax(); 1263 1264 } while (time_before(jiffies, timeout)); 1265 1266 /* After successful voltage change, switch the AVS back on */ 1267 if (avs_enabled) { 1268 pmic_sts &= 0x3f; 1269 avs_ctl &= ~SAW3_AVS_CTL_CLEAR_MASK; 1270 avs_ctl |= ((pmic_sts - 4) << 10); 1271 avs_ctl |= (pmic_sts << 17); 1272 avs_ctl |= SAW3_AVS_CTL_TGGL_MASK; 1273 regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl); 1274 } 1275 } 1276 1277 static int 1278 spmi_regulator_saw_set_voltage(struct regulator_dev *rdev, unsigned selector) 1279 { 1280 struct spmi_regulator *vreg = rdev_get_drvdata(rdev); 1281 int ret; 1282 u8 range_sel, voltage_sel; 1283 1284 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel); 1285 if (ret) 1286 return ret; 1287 1288 if (0 != range_sel) { 1289 dev_dbg(&rdev->dev, "range_sel = %02X voltage_sel = %02X", \ 1290 range_sel, voltage_sel); 1291 return -EINVAL; 1292 } 1293 1294 /* Always do the SAW register writes on the first CPU */ 1295 return smp_call_function_single(0, spmi_saw_set_vdd, \ 1296 &voltage_sel, true); 1297 } 1298 1299 static struct regulator_ops spmi_saw_ops = {}; 1300 1301 static const struct regulator_ops spmi_smps_ops = { 1302 .enable = regulator_enable_regmap, 1303 .disable = regulator_disable_regmap, 1304 .is_enabled = regulator_is_enabled_regmap, 1305 .set_voltage_sel = spmi_regulator_common_set_voltage, 1306 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1307 .get_voltage_sel = spmi_regulator_common_get_voltage, 1308 .map_voltage = spmi_regulator_common_map_voltage, 1309 .list_voltage = spmi_regulator_common_list_voltage, 1310 .set_mode = spmi_regulator_common_set_mode, 1311 .get_mode = spmi_regulator_common_get_mode, 1312 .set_load = spmi_regulator_common_set_load, 1313 .set_pull_down = spmi_regulator_common_set_pull_down, 1314 }; 1315 1316 static const struct regulator_ops spmi_ldo_ops = { 1317 .enable = regulator_enable_regmap, 1318 .disable = regulator_disable_regmap, 1319 .is_enabled = regulator_is_enabled_regmap, 1320 .set_voltage_sel = spmi_regulator_common_set_voltage, 1321 .get_voltage_sel = spmi_regulator_common_get_voltage, 1322 .map_voltage = spmi_regulator_common_map_voltage, 1323 .list_voltage = spmi_regulator_common_list_voltage, 1324 .set_mode = spmi_regulator_common_set_mode, 1325 .get_mode = spmi_regulator_common_get_mode, 1326 .set_load = spmi_regulator_common_set_load, 1327 .set_bypass = spmi_regulator_common_set_bypass, 1328 .get_bypass = spmi_regulator_common_get_bypass, 1329 .set_pull_down = spmi_regulator_common_set_pull_down, 1330 .set_soft_start = spmi_regulator_common_set_soft_start, 1331 }; 1332 1333 static const struct regulator_ops spmi_ln_ldo_ops = { 1334 .enable = regulator_enable_regmap, 1335 .disable = regulator_disable_regmap, 1336 .is_enabled = regulator_is_enabled_regmap, 1337 .set_voltage_sel = spmi_regulator_common_set_voltage, 1338 .get_voltage_sel = spmi_regulator_common_get_voltage, 1339 .map_voltage = spmi_regulator_common_map_voltage, 1340 .list_voltage = spmi_regulator_common_list_voltage, 1341 .set_bypass = spmi_regulator_common_set_bypass, 1342 .get_bypass = spmi_regulator_common_get_bypass, 1343 }; 1344 1345 static const struct regulator_ops spmi_vs_ops = { 1346 .enable = spmi_regulator_vs_enable, 1347 .disable = regulator_disable_regmap, 1348 .is_enabled = regulator_is_enabled_regmap, 1349 .set_pull_down = spmi_regulator_common_set_pull_down, 1350 .set_soft_start = spmi_regulator_common_set_soft_start, 1351 .set_over_current_protection = spmi_regulator_vs_ocp, 1352 .set_mode = spmi_regulator_common_set_mode, 1353 .get_mode = spmi_regulator_common_get_mode, 1354 }; 1355 1356 static const struct regulator_ops spmi_boost_ops = { 1357 .enable = regulator_enable_regmap, 1358 .disable = regulator_disable_regmap, 1359 .is_enabled = regulator_is_enabled_regmap, 1360 .set_voltage_sel = spmi_regulator_single_range_set_voltage, 1361 .get_voltage_sel = spmi_regulator_single_range_get_voltage, 1362 .map_voltage = spmi_regulator_single_map_voltage, 1363 .list_voltage = spmi_regulator_common_list_voltage, 1364 .set_input_current_limit = spmi_regulator_set_ilim, 1365 }; 1366 1367 static const struct regulator_ops spmi_ftsmps_ops = { 1368 .enable = regulator_enable_regmap, 1369 .disable = regulator_disable_regmap, 1370 .is_enabled = regulator_is_enabled_regmap, 1371 .set_voltage_sel = spmi_regulator_common_set_voltage, 1372 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1373 .get_voltage_sel = spmi_regulator_common_get_voltage, 1374 .map_voltage = spmi_regulator_common_map_voltage, 1375 .list_voltage = spmi_regulator_common_list_voltage, 1376 .set_mode = spmi_regulator_common_set_mode, 1377 .get_mode = spmi_regulator_common_get_mode, 1378 .set_load = spmi_regulator_common_set_load, 1379 .set_pull_down = spmi_regulator_common_set_pull_down, 1380 }; 1381 1382 static const struct regulator_ops spmi_ult_lo_smps_ops = { 1383 .enable = regulator_enable_regmap, 1384 .disable = regulator_disable_regmap, 1385 .is_enabled = regulator_is_enabled_regmap, 1386 .set_voltage_sel = spmi_regulator_ult_lo_smps_set_voltage, 1387 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1388 .get_voltage_sel = spmi_regulator_ult_lo_smps_get_voltage, 1389 .list_voltage = spmi_regulator_common_list_voltage, 1390 .set_mode = spmi_regulator_common_set_mode, 1391 .get_mode = spmi_regulator_common_get_mode, 1392 .set_load = spmi_regulator_common_set_load, 1393 .set_pull_down = spmi_regulator_common_set_pull_down, 1394 }; 1395 1396 static const struct regulator_ops spmi_ult_ho_smps_ops = { 1397 .enable = regulator_enable_regmap, 1398 .disable = regulator_disable_regmap, 1399 .is_enabled = regulator_is_enabled_regmap, 1400 .set_voltage_sel = spmi_regulator_single_range_set_voltage, 1401 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1402 .get_voltage_sel = spmi_regulator_single_range_get_voltage, 1403 .map_voltage = spmi_regulator_single_map_voltage, 1404 .list_voltage = spmi_regulator_common_list_voltage, 1405 .set_mode = spmi_regulator_common_set_mode, 1406 .get_mode = spmi_regulator_common_get_mode, 1407 .set_load = spmi_regulator_common_set_load, 1408 .set_pull_down = spmi_regulator_common_set_pull_down, 1409 }; 1410 1411 static const struct regulator_ops spmi_ult_ldo_ops = { 1412 .enable = regulator_enable_regmap, 1413 .disable = regulator_disable_regmap, 1414 .is_enabled = regulator_is_enabled_regmap, 1415 .set_voltage_sel = spmi_regulator_single_range_set_voltage, 1416 .get_voltage_sel = spmi_regulator_single_range_get_voltage, 1417 .map_voltage = spmi_regulator_single_map_voltage, 1418 .list_voltage = spmi_regulator_common_list_voltage, 1419 .set_mode = spmi_regulator_common_set_mode, 1420 .get_mode = spmi_regulator_common_get_mode, 1421 .set_load = spmi_regulator_common_set_load, 1422 .set_bypass = spmi_regulator_common_set_bypass, 1423 .get_bypass = spmi_regulator_common_get_bypass, 1424 .set_pull_down = spmi_regulator_common_set_pull_down, 1425 .set_soft_start = spmi_regulator_common_set_soft_start, 1426 }; 1427 1428 static const struct regulator_ops spmi_ftsmps426_ops = { 1429 .enable = regulator_enable_regmap, 1430 .disable = regulator_disable_regmap, 1431 .is_enabled = regulator_is_enabled_regmap, 1432 .set_voltage_sel = spmi_regulator_ftsmps426_set_voltage, 1433 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1434 .get_voltage_sel = spmi_regulator_ftsmps426_get_voltage, 1435 .map_voltage = spmi_regulator_single_map_voltage, 1436 .list_voltage = spmi_regulator_common_list_voltage, 1437 .set_mode = spmi_regulator_ftsmps426_set_mode, 1438 .get_mode = spmi_regulator_ftsmps426_get_mode, 1439 .set_load = spmi_regulator_common_set_load, 1440 .set_pull_down = spmi_regulator_common_set_pull_down, 1441 }; 1442 1443 static const struct regulator_ops spmi_hfs430_ops = { 1444 .enable = regulator_enable_regmap, 1445 .disable = regulator_disable_regmap, 1446 .is_enabled = regulator_is_enabled_regmap, 1447 .set_voltage_sel = spmi_regulator_ftsmps426_set_voltage, 1448 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, 1449 .get_voltage_sel = spmi_regulator_ftsmps426_get_voltage, 1450 .map_voltage = spmi_regulator_single_map_voltage, 1451 .list_voltage = spmi_regulator_common_list_voltage, 1452 .set_mode = spmi_regulator_ftsmps426_set_mode, 1453 .get_mode = spmi_regulator_ftsmps426_get_mode, 1454 }; 1455 1456 /* Maximum possible digital major revision value */ 1457 #define INF 0xFF 1458 1459 static const struct spmi_regulator_mapping supported_regulators[] = { 1460 /* type subtype dig_min dig_max ltype ops setpoints hpm_min */ 1461 SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000), 1462 SPMI_VREG(BUCK, HFS430, 0, INF, HFS430, hfs430, hfs430, 10000), 1463 SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000), 1464 SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000), 1465 SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000), 1466 SPMI_VREG(LDO, N600, 1, INF, LDO, ldo, nldo3, 10000), 1467 SPMI_VREG(LDO, N1200, 1, INF, LDO, ldo, nldo3, 10000), 1468 SPMI_VREG(LDO, N600_ST, 0, 0, LDO, ldo, nldo2, 10000), 1469 SPMI_VREG(LDO, N1200_ST, 0, 0, LDO, ldo, nldo2, 10000), 1470 SPMI_VREG(LDO, N600_ST, 1, INF, LDO, ldo, nldo3, 10000), 1471 SPMI_VREG(LDO, N1200_ST, 1, INF, LDO, ldo, nldo3, 10000), 1472 SPMI_VREG(LDO, P50, 0, INF, LDO, ldo, pldo, 5000), 1473 SPMI_VREG(LDO, P150, 0, INF, LDO, ldo, pldo, 10000), 1474 SPMI_VREG(LDO, P300, 0, INF, LDO, ldo, pldo, 10000), 1475 SPMI_VREG(LDO, P600, 0, INF, LDO, ldo, pldo, 10000), 1476 SPMI_VREG(LDO, P1200, 0, INF, LDO, ldo, pldo, 10000), 1477 SPMI_VREG(LDO, LN, 0, INF, LN_LDO, ln_ldo, ln_ldo, 0), 1478 SPMI_VREG(LDO, LV_P50, 0, INF, LDO, ldo, pldo, 5000), 1479 SPMI_VREG(LDO, LV_P150, 0, INF, LDO, ldo, pldo, 10000), 1480 SPMI_VREG(LDO, LV_P300, 0, INF, LDO, ldo, pldo, 10000), 1481 SPMI_VREG(LDO, LV_P600, 0, INF, LDO, ldo, pldo, 10000), 1482 SPMI_VREG(LDO, LV_P1200, 0, INF, LDO, ldo, pldo, 10000), 1483 SPMI_VREG(LDO, HT_N300_ST, 0, INF, FTSMPS426, ftsmps426, 1484 ht_nldo, 30000), 1485 SPMI_VREG(LDO, HT_N600_ST, 0, INF, FTSMPS426, ftsmps426, 1486 ht_nldo, 30000), 1487 SPMI_VREG(LDO, HT_N1200_ST, 0, INF, FTSMPS426, ftsmps426, 1488 ht_nldo, 30000), 1489 SPMI_VREG(LDO, HT_LVP150, 0, INF, FTSMPS426, ftsmps426, 1490 ht_lvpldo, 10000), 1491 SPMI_VREG(LDO, HT_LVP300, 0, INF, FTSMPS426, ftsmps426, 1492 ht_lvpldo, 10000), 1493 SPMI_VREG(LDO, L660_N300_ST, 0, INF, FTSMPS426, ftsmps426, 1494 nldo660, 10000), 1495 SPMI_VREG(LDO, L660_N600_ST, 0, INF, FTSMPS426, ftsmps426, 1496 nldo660, 10000), 1497 SPMI_VREG(LDO, L660_P50, 0, INF, FTSMPS426, ftsmps426, 1498 pldo660, 10000), 1499 SPMI_VREG(LDO, L660_P150, 0, INF, FTSMPS426, ftsmps426, 1500 pldo660, 10000), 1501 SPMI_VREG(LDO, L660_P600, 0, INF, FTSMPS426, ftsmps426, 1502 pldo660, 10000), 1503 SPMI_VREG(LDO, L660_LVP150, 0, INF, FTSMPS426, ftsmps426, 1504 ht_lvpldo, 10000), 1505 SPMI_VREG(LDO, L660_LVP600, 0, INF, FTSMPS426, ftsmps426, 1506 ht_lvpldo, 10000), 1507 SPMI_VREG_VS(LV100, 0, INF), 1508 SPMI_VREG_VS(LV300, 0, INF), 1509 SPMI_VREG_VS(MV300, 0, INF), 1510 SPMI_VREG_VS(MV500, 0, INF), 1511 SPMI_VREG_VS(HDMI, 0, INF), 1512 SPMI_VREG_VS(OTG, 0, INF), 1513 SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0), 1514 SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000), 1515 SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000), 1516 SPMI_VREG(FTS, FTS426_CTL, 0, INF, FTSMPS426, ftsmps426, ftsmps426, 100000), 1517 SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0), 1518 SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps, 1519 ult_lo_smps, 100000), 1520 SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps, 1521 ult_lo_smps, 100000), 1522 SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps, 1523 ult_lo_smps, 100000), 1524 SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps, 1525 ult_ho_smps, 100000), 1526 SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1527 SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1528 SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1529 SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), 1530 SPMI_VREG(ULT_LDO, LV_P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1531 SPMI_VREG(ULT_LDO, LV_P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1532 SPMI_VREG(ULT_LDO, LV_P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1533 SPMI_VREG(ULT_LDO, LV_P450, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1534 SPMI_VREG(ULT_LDO, P600, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1535 SPMI_VREG(ULT_LDO, P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1536 SPMI_VREG(ULT_LDO, P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), 1537 SPMI_VREG(ULT_LDO, P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000), 1538 }; 1539 1540 static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points) 1541 { 1542 unsigned int n; 1543 struct spmi_voltage_range *range = points->range; 1544 1545 for (; range < points->range + points->count; range++) { 1546 n = 0; 1547 if (range->set_point_max_uV) { 1548 n = range->set_point_max_uV - range->set_point_min_uV; 1549 n = (n / range->step_uV) + 1; 1550 } 1551 range->n_voltages = n; 1552 points->n_voltages += n; 1553 } 1554 } 1555 1556 static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type) 1557 { 1558 const struct spmi_regulator_mapping *mapping; 1559 int ret, i; 1560 u32 dig_major_rev; 1561 u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1]; 1562 u8 type, subtype; 1563 1564 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version, 1565 ARRAY_SIZE(version)); 1566 if (ret) { 1567 dev_dbg(vreg->dev, "could not read version registers\n"); 1568 return ret; 1569 } 1570 dig_major_rev = version[SPMI_COMMON_REG_DIG_MAJOR_REV 1571 - SPMI_COMMON_REG_DIG_MAJOR_REV]; 1572 1573 if (!force_type) { 1574 type = version[SPMI_COMMON_REG_TYPE - 1575 SPMI_COMMON_REG_DIG_MAJOR_REV]; 1576 subtype = version[SPMI_COMMON_REG_SUBTYPE - 1577 SPMI_COMMON_REG_DIG_MAJOR_REV]; 1578 } else { 1579 type = force_type >> 8; 1580 subtype = force_type; 1581 } 1582 1583 for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) { 1584 mapping = &supported_regulators[i]; 1585 if (mapping->type == type && mapping->subtype == subtype 1586 && mapping->revision_min <= dig_major_rev 1587 && mapping->revision_max >= dig_major_rev) 1588 goto found; 1589 } 1590 1591 dev_err(vreg->dev, 1592 "unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n", 1593 vreg->desc.name, type, subtype, dig_major_rev); 1594 1595 return -ENODEV; 1596 1597 found: 1598 vreg->logical_type = mapping->logical_type; 1599 vreg->set_points = mapping->set_points; 1600 vreg->hpm_min_load = mapping->hpm_min_load; 1601 vreg->desc.ops = mapping->ops; 1602 1603 if (mapping->set_points) { 1604 if (!mapping->set_points->n_voltages) 1605 spmi_calculate_num_voltages(mapping->set_points); 1606 vreg->desc.n_voltages = mapping->set_points->n_voltages; 1607 } 1608 1609 return 0; 1610 } 1611 1612 static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg) 1613 { 1614 int ret; 1615 u8 reg = 0; 1616 int step, delay, slew_rate, step_delay; 1617 const struct spmi_voltage_range *range; 1618 1619 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1); 1620 if (ret) { 1621 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret); 1622 return ret; 1623 } 1624 1625 range = spmi_regulator_find_range(vreg); 1626 if (!range) 1627 return -EINVAL; 1628 1629 switch (vreg->logical_type) { 1630 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS: 1631 step_delay = SPMI_FTSMPS_STEP_DELAY; 1632 break; 1633 default: 1634 step_delay = SPMI_DEFAULT_STEP_DELAY; 1635 break; 1636 } 1637 1638 step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK; 1639 step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT; 1640 1641 delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK; 1642 delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT; 1643 1644 /* slew_rate has units of uV/us */ 1645 slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step); 1646 slew_rate /= 1000 * (step_delay << delay); 1647 slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM; 1648 slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN; 1649 1650 /* Ensure that the slew rate is greater than 0 */ 1651 vreg->slew_rate = max(slew_rate, 1); 1652 1653 return ret; 1654 } 1655 1656 static int spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator *vreg, 1657 int clock_rate) 1658 { 1659 int ret; 1660 u8 reg = 0; 1661 int delay, slew_rate; 1662 const struct spmi_voltage_range *range = &vreg->set_points->range[0]; 1663 1664 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1); 1665 if (ret) { 1666 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret); 1667 return ret; 1668 } 1669 1670 delay = reg & SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK; 1671 delay >>= SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT; 1672 1673 /* slew_rate has units of uV/us */ 1674 slew_rate = clock_rate * range->step_uV; 1675 slew_rate /= 1000 * (SPMI_FTSMPS426_STEP_DELAY << delay); 1676 slew_rate *= SPMI_FTSMPS426_STEP_MARGIN_NUM; 1677 slew_rate /= SPMI_FTSMPS426_STEP_MARGIN_DEN; 1678 1679 /* Ensure that the slew rate is greater than 0 */ 1680 vreg->slew_rate = max(slew_rate, 1); 1681 1682 return ret; 1683 } 1684 1685 static int spmi_regulator_init_registers(struct spmi_regulator *vreg, 1686 const struct spmi_regulator_init_data *data) 1687 { 1688 int ret; 1689 enum spmi_regulator_logical_type type; 1690 u8 ctrl_reg[8], reg, mask; 1691 1692 type = vreg->logical_type; 1693 1694 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8); 1695 if (ret) 1696 return ret; 1697 1698 /* Set up enable pin control. */ 1699 if (!(data->pin_ctrl_enable & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) { 1700 switch (type) { 1701 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS: 1702 case SPMI_REGULATOR_LOGICAL_TYPE_LDO: 1703 case SPMI_REGULATOR_LOGICAL_TYPE_VS: 1704 ctrl_reg[SPMI_COMMON_IDX_ENABLE] &= 1705 ~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK; 1706 ctrl_reg[SPMI_COMMON_IDX_ENABLE] |= 1707 data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK; 1708 break; 1709 default: 1710 break; 1711 } 1712 } 1713 1714 /* Set up mode pin control. */ 1715 if (!(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) { 1716 switch (type) { 1717 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS: 1718 case SPMI_REGULATOR_LOGICAL_TYPE_LDO: 1719 ctrl_reg[SPMI_COMMON_IDX_MODE] &= 1720 ~SPMI_COMMON_MODE_FOLLOW_ALL_MASK; 1721 ctrl_reg[SPMI_COMMON_IDX_MODE] |= 1722 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK; 1723 break; 1724 case SPMI_REGULATOR_LOGICAL_TYPE_VS: 1725 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS: 1726 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS: 1727 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO: 1728 ctrl_reg[SPMI_COMMON_IDX_MODE] &= 1729 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; 1730 ctrl_reg[SPMI_COMMON_IDX_MODE] |= 1731 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; 1732 break; 1733 default: 1734 break; 1735 } 1736 } 1737 1738 /* Write back any control register values that were modified. */ 1739 ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8); 1740 if (ret) 1741 return ret; 1742 1743 /* Set soft start strength and over current protection for VS. */ 1744 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) { 1745 if (data->vs_soft_start_strength 1746 != SPMI_VS_SOFT_START_STR_HW_DEFAULT) { 1747 reg = data->vs_soft_start_strength 1748 & SPMI_VS_SOFT_START_SEL_MASK; 1749 mask = SPMI_VS_SOFT_START_SEL_MASK; 1750 return spmi_vreg_update_bits(vreg, 1751 SPMI_VS_REG_SOFT_START, 1752 reg, mask); 1753 } 1754 } 1755 1756 return 0; 1757 } 1758 1759 static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg, 1760 struct device_node *node, struct spmi_regulator_init_data *data) 1761 { 1762 /* 1763 * Initialize configuration parameters to use hardware default in case 1764 * no value is specified via device tree. 1765 */ 1766 data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT; 1767 data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT; 1768 data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT; 1769 1770 /* These bindings are optional, so it is okay if they aren't found. */ 1771 of_property_read_u32(node, "qcom,ocp-max-retries", 1772 &vreg->ocp_max_retries); 1773 of_property_read_u32(node, "qcom,ocp-retry-delay", 1774 &vreg->ocp_retry_delay_ms); 1775 of_property_read_u32(node, "qcom,pin-ctrl-enable", 1776 &data->pin_ctrl_enable); 1777 of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm); 1778 of_property_read_u32(node, "qcom,vs-soft-start-strength", 1779 &data->vs_soft_start_strength); 1780 } 1781 1782 static unsigned int spmi_regulator_of_map_mode(unsigned int mode) 1783 { 1784 if (mode == 1) 1785 return REGULATOR_MODE_NORMAL; 1786 if (mode == 2) 1787 return REGULATOR_MODE_FAST; 1788 1789 return REGULATOR_MODE_IDLE; 1790 } 1791 1792 static int spmi_regulator_of_parse(struct device_node *node, 1793 const struct regulator_desc *desc, 1794 struct regulator_config *config) 1795 { 1796 struct spmi_regulator_init_data data = { }; 1797 struct spmi_regulator *vreg = config->driver_data; 1798 struct device *dev = config->dev; 1799 int ret; 1800 1801 spmi_regulator_get_dt_config(vreg, node, &data); 1802 1803 if (!vreg->ocp_max_retries) 1804 vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES; 1805 if (!vreg->ocp_retry_delay_ms) 1806 vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS; 1807 1808 ret = spmi_regulator_init_registers(vreg, &data); 1809 if (ret) { 1810 dev_err(dev, "common initialization failed, ret=%d\n", ret); 1811 return ret; 1812 } 1813 1814 switch (vreg->logical_type) { 1815 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS: 1816 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS: 1817 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS: 1818 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS: 1819 ret = spmi_regulator_init_slew_rate(vreg); 1820 if (ret) 1821 return ret; 1822 break; 1823 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426: 1824 ret = spmi_regulator_init_slew_rate_ftsmps426(vreg, 1825 SPMI_FTSMPS426_CLOCK_RATE); 1826 if (ret) 1827 return ret; 1828 break; 1829 case SPMI_REGULATOR_LOGICAL_TYPE_HFS430: 1830 ret = spmi_regulator_init_slew_rate_ftsmps426(vreg, 1831 SPMI_HFS430_CLOCK_RATE); 1832 if (ret) 1833 return ret; 1834 break; 1835 default: 1836 break; 1837 } 1838 1839 if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS) 1840 vreg->ocp_irq = 0; 1841 1842 if (vreg->ocp_irq) { 1843 ret = devm_request_irq(dev, vreg->ocp_irq, 1844 spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp", 1845 vreg); 1846 if (ret < 0) { 1847 dev_err(dev, "failed to request irq %d, ret=%d\n", 1848 vreg->ocp_irq, ret); 1849 return ret; 1850 } 1851 1852 ret = devm_delayed_work_autocancel(dev, &vreg->ocp_work, 1853 spmi_regulator_vs_ocp_work); 1854 if (ret) 1855 return ret; 1856 } 1857 1858 return 0; 1859 } 1860 1861 static const struct spmi_regulator_data pm8941_regulators[] = { 1862 { "s1", 0x1400, "vdd_s1", }, 1863 { "s2", 0x1700, "vdd_s2", }, 1864 { "s3", 0x1a00, "vdd_s3", }, 1865 { "s4", 0xa000, }, 1866 { "l1", 0x4000, "vdd_l1_l3", }, 1867 { "l2", 0x4100, "vdd_l2_lvs_1_2_3", }, 1868 { "l3", 0x4200, "vdd_l1_l3", }, 1869 { "l4", 0x4300, "vdd_l4_l11", }, 1870 { "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 }, 1871 { "l6", 0x4500, "vdd_l6_l12_l14_l15", }, 1872 { "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 }, 1873 { "l8", 0x4700, "vdd_l8_l16_l18_19", }, 1874 { "l9", 0x4800, "vdd_l9_l10_l17_l22", }, 1875 { "l10", 0x4900, "vdd_l9_l10_l17_l22", }, 1876 { "l11", 0x4a00, "vdd_l4_l11", }, 1877 { "l12", 0x4b00, "vdd_l6_l12_l14_l15", }, 1878 { "l13", 0x4c00, "vdd_l13_l20_l23_l24", }, 1879 { "l14", 0x4d00, "vdd_l6_l12_l14_l15", }, 1880 { "l15", 0x4e00, "vdd_l6_l12_l14_l15", }, 1881 { "l16", 0x4f00, "vdd_l8_l16_l18_19", }, 1882 { "l17", 0x5000, "vdd_l9_l10_l17_l22", }, 1883 { "l18", 0x5100, "vdd_l8_l16_l18_19", }, 1884 { "l19", 0x5200, "vdd_l8_l16_l18_19", }, 1885 { "l20", 0x5300, "vdd_l13_l20_l23_l24", }, 1886 { "l21", 0x5400, "vdd_l21", }, 1887 { "l22", 0x5500, "vdd_l9_l10_l17_l22", }, 1888 { "l23", 0x5600, "vdd_l13_l20_l23_l24", }, 1889 { "l24", 0x5700, "vdd_l13_l20_l23_l24", }, 1890 { "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", }, 1891 { "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", }, 1892 { "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", }, 1893 { "5vs1", 0x8300, "vin_5vs", "ocp-5vs1", }, 1894 { "5vs2", 0x8400, "vin_5vs", "ocp-5vs2", }, 1895 { } 1896 }; 1897 1898 static const struct spmi_regulator_data pm8841_regulators[] = { 1899 { "s1", 0x1400, "vdd_s1", }, 1900 { "s2", 0x1700, "vdd_s2", NULL, 0x1c08 }, 1901 { "s3", 0x1a00, "vdd_s3", }, 1902 { "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 }, 1903 { "s5", 0x2000, "vdd_s5", NULL, 0x1c08 }, 1904 { "s6", 0x2300, "vdd_s6", NULL, 0x1c08 }, 1905 { "s7", 0x2600, "vdd_s7", NULL, 0x1c08 }, 1906 { "s8", 0x2900, "vdd_s8", NULL, 0x1c08 }, 1907 { } 1908 }; 1909 1910 static const struct spmi_regulator_data pm8916_regulators[] = { 1911 { "s1", 0x1400, "vdd_s1", }, 1912 { "s2", 0x1700, "vdd_s2", }, 1913 { "s3", 0x1a00, "vdd_s3", }, 1914 { "s4", 0x1d00, "vdd_s4", }, 1915 { "l1", 0x4000, "vdd_l1_l3", }, 1916 { "l2", 0x4100, "vdd_l2", }, 1917 { "l3", 0x4200, "vdd_l1_l3", }, 1918 { "l4", 0x4300, "vdd_l4_l5_l6", }, 1919 { "l5", 0x4400, "vdd_l4_l5_l6", }, 1920 { "l6", 0x4500, "vdd_l4_l5_l6", }, 1921 { "l7", 0x4600, "vdd_l7", }, 1922 { "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", }, 1923 { "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", }, 1924 { "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", }, 1925 { "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", }, 1926 { "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", }, 1927 { "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", }, 1928 { "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", }, 1929 { "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", }, 1930 { "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", }, 1931 { "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", }, 1932 { "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", }, 1933 { } 1934 }; 1935 1936 static const struct spmi_regulator_data pm8950_regulators[] = { 1937 { "s1", 0x1400, "vdd_s1", }, 1938 { "s2", 0x1700, "vdd_s2", }, 1939 { "s3", 0x1a00, "vdd_s3", }, 1940 { "s4", 0x1d00, "vdd_s4", }, 1941 { "s5", 0x2000, "vdd_s5", }, 1942 { "s6", 0x2300, "vdd_s6", }, 1943 { "l1", 0x4000, "vdd_l1_l19", }, 1944 { "l2", 0x4100, "vdd_l2_l23", }, 1945 { "l3", 0x4200, "vdd_l3", }, 1946 { "l4", 0x4300, "vdd_l4_l5_l6_l7_l16", }, 1947 { "l5", 0x4400, "vdd_l4_l5_l6_l7_l16", }, 1948 { "l6", 0x4500, "vdd_l4_l5_l6_l7_l16", }, 1949 { "l7", 0x4600, "vdd_l4_l5_l6_l7_l16", }, 1950 { "l8", 0x4700, "vdd_l8_l11_l12_l17_l22", }, 1951 { "l9", 0x4800, "vdd_l9_l10_l13_l14_l15_l18", }, 1952 { "l10", 0x4900, "vdd_l9_l10_l13_l14_l15_l18", }, 1953 { "l11", 0x4a00, "vdd_l8_l11_l12_l17_l22", }, 1954 { "l12", 0x4b00, "vdd_l8_l11_l12_l17_l22", }, 1955 { "l13", 0x4c00, "vdd_l9_l10_l13_l14_l15_l18", }, 1956 { "l14", 0x4d00, "vdd_l9_l10_l13_l14_l15_l18", }, 1957 { "l15", 0x4e00, "vdd_l9_l10_l13_l14_l15_l18", }, 1958 { "l16", 0x4f00, "vdd_l4_l5_l6_l7_l16", }, 1959 { "l17", 0x5000, "vdd_l8_l11_l12_l17_l22", }, 1960 { "l18", 0x5100, "vdd_l9_l10_l13_l14_l15_l18", }, 1961 { "l19", 0x5200, "vdd_l1_l19", }, 1962 { "l20", 0x5300, "vdd_l20", }, 1963 { "l21", 0x5400, "vdd_l21", }, 1964 { "l22", 0x5500, "vdd_l8_l11_l12_l17_l22", }, 1965 { "l23", 0x5600, "vdd_l2_l23", }, 1966 { } 1967 }; 1968 1969 static const struct spmi_regulator_data pm8994_regulators[] = { 1970 { "s1", 0x1400, "vdd_s1", }, 1971 { "s2", 0x1700, "vdd_s2", }, 1972 { "s3", 0x1a00, "vdd_s3", }, 1973 { "s4", 0x1d00, "vdd_s4", }, 1974 { "s5", 0x2000, "vdd_s5", }, 1975 { "s6", 0x2300, "vdd_s6", }, 1976 { "s7", 0x2600, "vdd_s7", }, 1977 { "s8", 0x2900, "vdd_s8", }, 1978 { "s9", 0x2c00, "vdd_s9", }, 1979 { "s10", 0x2f00, "vdd_s10", }, 1980 { "s11", 0x3200, "vdd_s11", }, 1981 { "s12", 0x3500, "vdd_s12", }, 1982 { "l1", 0x4000, "vdd_l1", }, 1983 { "l2", 0x4100, "vdd_l2_l26_l28", }, 1984 { "l3", 0x4200, "vdd_l3_l11", }, 1985 { "l4", 0x4300, "vdd_l4_l27_l31", }, 1986 { "l5", 0x4400, "vdd_l5_l7", }, 1987 { "l6", 0x4500, "vdd_l6_l12_l32", }, 1988 { "l7", 0x4600, "vdd_l5_l7", }, 1989 { "l8", 0x4700, "vdd_l8_l16_l30", }, 1990 { "l9", 0x4800, "vdd_l9_l10_l18_l22", }, 1991 { "l10", 0x4900, "vdd_l9_l10_l18_l22", }, 1992 { "l11", 0x4a00, "vdd_l3_l11", }, 1993 { "l12", 0x4b00, "vdd_l6_l12_l32", }, 1994 { "l13", 0x4c00, "vdd_l13_l19_l23_l24", }, 1995 { "l14", 0x4d00, "vdd_l14_l15", }, 1996 { "l15", 0x4e00, "vdd_l14_l15", }, 1997 { "l16", 0x4f00, "vdd_l8_l16_l30", }, 1998 { "l17", 0x5000, "vdd_l17_l29", }, 1999 { "l18", 0x5100, "vdd_l9_l10_l18_l22", }, 2000 { "l19", 0x5200, "vdd_l13_l19_l23_l24", }, 2001 { "l20", 0x5300, "vdd_l20_l21", }, 2002 { "l21", 0x5400, "vdd_l20_l21", }, 2003 { "l22", 0x5500, "vdd_l9_l10_l18_l22", }, 2004 { "l23", 0x5600, "vdd_l13_l19_l23_l24", }, 2005 { "l24", 0x5700, "vdd_l13_l19_l23_l24", }, 2006 { "l25", 0x5800, "vdd_l25", }, 2007 { "l26", 0x5900, "vdd_l2_l26_l28", }, 2008 { "l27", 0x5a00, "vdd_l4_l27_l31", }, 2009 { "l28", 0x5b00, "vdd_l2_l26_l28", }, 2010 { "l29", 0x5c00, "vdd_l17_l29", }, 2011 { "l30", 0x5d00, "vdd_l8_l16_l30", }, 2012 { "l31", 0x5e00, "vdd_l4_l27_l31", }, 2013 { "l32", 0x5f00, "vdd_l6_l12_l32", }, 2014 { "lvs1", 0x8000, "vdd_lvs_1_2", }, 2015 { "lvs2", 0x8100, "vdd_lvs_1_2", }, 2016 { } 2017 }; 2018 2019 static const struct spmi_regulator_data pmi8994_regulators[] = { 2020 { "s1", 0x1400, "vdd_s1", }, 2021 { "s2", 0x1700, "vdd_s2", }, 2022 { "s3", 0x1a00, "vdd_s3", }, 2023 { "l1", 0x4000, "vdd_l1", }, 2024 { } 2025 }; 2026 2027 static const struct spmi_regulator_data pm660_regulators[] = { 2028 { "s1", 0x1400, "vdd_s1", }, 2029 { "s2", 0x1700, "vdd_s2", }, 2030 { "s3", 0x1a00, "vdd_s3", }, 2031 { "s4", 0x1d00, "vdd_s3", }, 2032 { "s5", 0x2000, "vdd_s5", }, 2033 { "s6", 0x2300, "vdd_s6", }, 2034 { "l1", 0x4000, "vdd_l1_l6_l7", }, 2035 { "l2", 0x4100, "vdd_l2_l3", }, 2036 { "l3", 0x4200, "vdd_l2_l3", }, 2037 /* l4 is unaccessible on PM660 */ 2038 { "l5", 0x4400, "vdd_l5", }, 2039 { "l6", 0x4500, "vdd_l1_l6_l7", }, 2040 { "l7", 0x4600, "vdd_l1_l6_l7", }, 2041 { "l8", 0x4700, "vdd_l8_l9_l10_l11_l12_l13_l14", }, 2042 { "l9", 0x4800, "vdd_l8_l9_l10_l11_l12_l13_l14", }, 2043 { "l10", 0x4900, "vdd_l8_l9_l10_l11_l12_l13_l14", }, 2044 { "l11", 0x4a00, "vdd_l8_l9_l10_l11_l12_l13_l14", }, 2045 { "l12", 0x4b00, "vdd_l8_l9_l10_l11_l12_l13_l14", }, 2046 { "l13", 0x4c00, "vdd_l8_l9_l10_l11_l12_l13_l14", }, 2047 { "l14", 0x4d00, "vdd_l8_l9_l10_l11_l12_l13_l14", }, 2048 { "l15", 0x4e00, "vdd_l15_l16_l17_l18_l19", }, 2049 { "l16", 0x4f00, "vdd_l15_l16_l17_l18_l19", }, 2050 { "l17", 0x5000, "vdd_l15_l16_l17_l18_l19", }, 2051 { "l18", 0x5100, "vdd_l15_l16_l17_l18_l19", }, 2052 { "l19", 0x5200, "vdd_l15_l16_l17_l18_l19", }, 2053 { } 2054 }; 2055 2056 static const struct spmi_regulator_data pm660l_regulators[] = { 2057 { "s1", 0x1400, "vdd_s1", }, 2058 { "s2", 0x1700, "vdd_s2", }, 2059 { "s3", 0x1a00, "vdd_s3", }, 2060 { "s4", 0x1d00, "vdd_s4", }, 2061 { "s5", 0x2000, "vdd_s5", }, 2062 { "l1", 0x4000, "vdd_l1_l9_l10", }, 2063 { "l2", 0x4100, "vdd_l2", }, 2064 { "l3", 0x4200, "vdd_l3_l5_l7_l8", }, 2065 { "l4", 0x4300, "vdd_l4_l6", }, 2066 { "l5", 0x4400, "vdd_l3_l5_l7_l8", }, 2067 { "l6", 0x4500, "vdd_l4_l6", }, 2068 { "l7", 0x4600, "vdd_l3_l5_l7_l8", }, 2069 { "l8", 0x4700, "vdd_l3_l5_l7_l8", }, 2070 { "l9", 0x4800, "vdd_l1_l9_l10", }, 2071 { "l10", 0x4900, "vdd_l1_l9_l10", }, 2072 { } 2073 }; 2074 2075 2076 static const struct spmi_regulator_data pm8004_regulators[] = { 2077 { "s2", 0x1700, "vdd_s2", }, 2078 { "s5", 0x2000, "vdd_s5", }, 2079 { } 2080 }; 2081 2082 static const struct spmi_regulator_data pm8005_regulators[] = { 2083 { "s1", 0x1400, "vdd_s1", }, 2084 { "s2", 0x1700, "vdd_s2", }, 2085 { "s3", 0x1a00, "vdd_s3", }, 2086 { "s4", 0x1d00, "vdd_s4", }, 2087 { } 2088 }; 2089 2090 static const struct spmi_regulator_data pms405_regulators[] = { 2091 { "s3", 0x1a00, "vdd_s3"}, 2092 { } 2093 }; 2094 2095 static const struct of_device_id qcom_spmi_regulator_match[] = { 2096 { .compatible = "qcom,pm8004-regulators", .data = &pm8004_regulators }, 2097 { .compatible = "qcom,pm8005-regulators", .data = &pm8005_regulators }, 2098 { .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators }, 2099 { .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators }, 2100 { .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators }, 2101 { .compatible = "qcom,pm8950-regulators", .data = &pm8950_regulators }, 2102 { .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators }, 2103 { .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators }, 2104 { .compatible = "qcom,pm660-regulators", .data = &pm660_regulators }, 2105 { .compatible = "qcom,pm660l-regulators", .data = &pm660l_regulators }, 2106 { .compatible = "qcom,pms405-regulators", .data = &pms405_regulators }, 2107 { } 2108 }; 2109 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match); 2110 2111 static int qcom_spmi_regulator_probe(struct platform_device *pdev) 2112 { 2113 const struct spmi_regulator_data *reg; 2114 const struct spmi_voltage_range *range; 2115 const struct of_device_id *match; 2116 struct regulator_config config = { }; 2117 struct regulator_dev *rdev; 2118 struct spmi_regulator *vreg; 2119 struct regmap *regmap; 2120 const char *name; 2121 struct device *dev = &pdev->dev; 2122 struct device_node *node = pdev->dev.of_node; 2123 struct device_node *syscon, *reg_node; 2124 struct property *reg_prop; 2125 int ret, lenp; 2126 struct list_head *vreg_list; 2127 2128 vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL); 2129 if (!vreg_list) 2130 return -ENOMEM; 2131 INIT_LIST_HEAD(vreg_list); 2132 platform_set_drvdata(pdev, vreg_list); 2133 2134 regmap = dev_get_regmap(dev->parent, NULL); 2135 if (!regmap) 2136 return -ENODEV; 2137 2138 match = of_match_device(qcom_spmi_regulator_match, &pdev->dev); 2139 if (!match) 2140 return -ENODEV; 2141 2142 if (of_find_property(node, "qcom,saw-reg", &lenp)) { 2143 syscon = of_parse_phandle(node, "qcom,saw-reg", 0); 2144 saw_regmap = syscon_node_to_regmap(syscon); 2145 of_node_put(syscon); 2146 if (IS_ERR(saw_regmap)) 2147 dev_err(dev, "ERROR reading SAW regmap\n"); 2148 } 2149 2150 for (reg = match->data; reg->name; reg++) { 2151 2152 if (saw_regmap) { 2153 reg_node = of_get_child_by_name(node, reg->name); 2154 reg_prop = of_find_property(reg_node, "qcom,saw-slave", 2155 &lenp); 2156 of_node_put(reg_node); 2157 if (reg_prop) 2158 continue; 2159 } 2160 2161 vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL); 2162 if (!vreg) 2163 return -ENOMEM; 2164 2165 vreg->dev = dev; 2166 vreg->base = reg->base; 2167 vreg->regmap = regmap; 2168 if (reg->ocp) { 2169 vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp); 2170 if (vreg->ocp_irq < 0) 2171 return vreg->ocp_irq; 2172 } 2173 vreg->desc.id = -1; 2174 vreg->desc.owner = THIS_MODULE; 2175 vreg->desc.type = REGULATOR_VOLTAGE; 2176 vreg->desc.enable_reg = reg->base + SPMI_COMMON_REG_ENABLE; 2177 vreg->desc.enable_mask = SPMI_COMMON_ENABLE_MASK; 2178 vreg->desc.enable_val = SPMI_COMMON_ENABLE; 2179 vreg->desc.name = name = reg->name; 2180 vreg->desc.supply_name = reg->supply; 2181 vreg->desc.of_match = reg->name; 2182 vreg->desc.of_parse_cb = spmi_regulator_of_parse; 2183 vreg->desc.of_map_mode = spmi_regulator_of_map_mode; 2184 2185 ret = spmi_regulator_match(vreg, reg->force_type); 2186 if (ret) 2187 continue; 2188 2189 if (saw_regmap) { 2190 reg_node = of_get_child_by_name(node, reg->name); 2191 reg_prop = of_find_property(reg_node, "qcom,saw-leader", 2192 &lenp); 2193 of_node_put(reg_node); 2194 if (reg_prop) { 2195 spmi_saw_ops = *(vreg->desc.ops); 2196 spmi_saw_ops.set_voltage_sel = 2197 spmi_regulator_saw_set_voltage; 2198 vreg->desc.ops = &spmi_saw_ops; 2199 } 2200 } 2201 2202 if (vreg->set_points && vreg->set_points->count == 1) { 2203 /* since there is only one range */ 2204 range = vreg->set_points->range; 2205 vreg->desc.uV_step = range->step_uV; 2206 } 2207 2208 config.dev = dev; 2209 config.driver_data = vreg; 2210 config.regmap = regmap; 2211 rdev = devm_regulator_register(dev, &vreg->desc, &config); 2212 if (IS_ERR(rdev)) { 2213 dev_err(dev, "failed to register %s\n", name); 2214 return PTR_ERR(rdev); 2215 } 2216 2217 INIT_LIST_HEAD(&vreg->node); 2218 list_add(&vreg->node, vreg_list); 2219 } 2220 2221 return 0; 2222 } 2223 2224 static struct platform_driver qcom_spmi_regulator_driver = { 2225 .driver = { 2226 .name = "qcom-spmi-regulator", 2227 .of_match_table = qcom_spmi_regulator_match, 2228 }, 2229 .probe = qcom_spmi_regulator_probe, 2230 }; 2231 module_platform_driver(qcom_spmi_regulator_driver); 2232 2233 MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver"); 2234 MODULE_LICENSE("GPL v2"); 2235 MODULE_ALIAS("platform:qcom-spmi-regulator"); 2236