1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved. 4 5 #include <linux/kernel.h> 6 #include <linux/module.h> 7 #include <linux/init.h> 8 #include <linux/err.h> 9 #include <linux/of.h> 10 #include <linux/of_device.h> 11 #include <linux/regulator/of_regulator.h> 12 #include <linux/platform_device.h> 13 #include <linux/regulator/driver.h> 14 #include <linux/regulator/machine.h> 15 #include <linux/regulator/pfuze100.h> 16 #include <linux/i2c.h> 17 #include <linux/slab.h> 18 #include <linux/regmap.h> 19 20 #define PFUZE_FLAG_DISABLE_SW BIT(1) 21 22 #define PFUZE_NUMREGS 128 23 #define PFUZE100_VOL_OFFSET 0 24 #define PFUZE100_STANDBY_OFFSET 1 25 #define PFUZE100_MODE_OFFSET 3 26 #define PFUZE100_CONF_OFFSET 4 27 28 #define PFUZE100_DEVICEID 0x0 29 #define PFUZE100_REVID 0x3 30 #define PFUZE100_FABID 0x4 31 32 #define PFUZE100_COINVOL 0x1a 33 #define PFUZE100_SW1ABVOL 0x20 34 #define PFUZE100_SW1ABMODE 0x23 35 #define PFUZE100_SW1CVOL 0x2e 36 #define PFUZE100_SW1CMODE 0x31 37 #define PFUZE100_SW2VOL 0x35 38 #define PFUZE100_SW2MODE 0x38 39 #define PFUZE100_SW3AVOL 0x3c 40 #define PFUZE100_SW3AMODE 0x3f 41 #define PFUZE100_SW3BVOL 0x43 42 #define PFUZE100_SW3BMODE 0x46 43 #define PFUZE100_SW4VOL 0x4a 44 #define PFUZE100_SW4MODE 0x4d 45 #define PFUZE100_SWBSTCON1 0x66 46 #define PFUZE100_VREFDDRCON 0x6a 47 #define PFUZE100_VSNVSVOL 0x6b 48 #define PFUZE100_VGEN1VOL 0x6c 49 #define PFUZE100_VGEN2VOL 0x6d 50 #define PFUZE100_VGEN3VOL 0x6e 51 #define PFUZE100_VGEN4VOL 0x6f 52 #define PFUZE100_VGEN5VOL 0x70 53 #define PFUZE100_VGEN6VOL 0x71 54 55 #define PFUZE100_SWxMODE_MASK 0xf 56 #define PFUZE100_SWxMODE_APS_APS 0x8 57 #define PFUZE100_SWxMODE_APS_OFF 0x4 58 59 #define PFUZE100_VGENxLPWR BIT(6) 60 #define PFUZE100_VGENxSTBY BIT(5) 61 62 enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3, PFUZE3001 = 0x31, }; 63 64 struct pfuze_regulator { 65 struct regulator_desc desc; 66 unsigned char stby_reg; 67 unsigned char stby_mask; 68 bool sw_reg; 69 }; 70 71 struct pfuze_chip { 72 int chip_id; 73 int flags; 74 struct regmap *regmap; 75 struct device *dev; 76 struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR]; 77 struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR]; 78 struct pfuze_regulator *pfuze_regulators; 79 }; 80 81 static const int pfuze100_swbst[] = { 82 5000000, 5050000, 5100000, 5150000, 83 }; 84 85 static const int pfuze100_vsnvs[] = { 86 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000, 87 }; 88 89 static const int pfuze100_coin[] = { 90 2500000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000, 91 }; 92 93 static const int pfuze3000_sw1a[] = { 94 700000, 725000, 750000, 775000, 800000, 825000, 850000, 875000, 95 900000, 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 96 1100000, 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 97 1300000, 1325000, 1350000, 1375000, 1400000, 1425000, 1800000, 3300000, 98 }; 99 100 static const int pfuze3000_sw2lo[] = { 101 1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 102 }; 103 104 static const int pfuze3000_sw2hi[] = { 105 2500000, 2800000, 2850000, 3000000, 3100000, 3150000, 3200000, 3300000, 106 }; 107 108 static const struct of_device_id pfuze_dt_ids[] = { 109 { .compatible = "fsl,pfuze100", .data = (void *)PFUZE100}, 110 { .compatible = "fsl,pfuze200", .data = (void *)PFUZE200}, 111 { .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000}, 112 { .compatible = "fsl,pfuze3001", .data = (void *)PFUZE3001}, 113 { } 114 }; 115 MODULE_DEVICE_TABLE(of, pfuze_dt_ids); 116 117 static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) 118 { 119 struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev); 120 int id = rdev_get_id(rdev); 121 bool reg_has_ramp_delay; 122 unsigned int ramp_bits = 0; 123 int ret; 124 125 switch (pfuze100->chip_id) { 126 case PFUZE3001: 127 /* no dynamic voltage scaling for PF3001 */ 128 reg_has_ramp_delay = false; 129 break; 130 case PFUZE3000: 131 reg_has_ramp_delay = (id < PFUZE3000_SWBST); 132 break; 133 case PFUZE200: 134 reg_has_ramp_delay = (id < PFUZE200_SWBST); 135 break; 136 case PFUZE100: 137 default: 138 reg_has_ramp_delay = (id < PFUZE100_SWBST); 139 break; 140 } 141 142 if (reg_has_ramp_delay) { 143 if (ramp_delay > 0) { 144 ramp_delay = 12500 / ramp_delay; 145 ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3); 146 } 147 148 ret = regmap_update_bits(pfuze100->regmap, 149 rdev->desc->vsel_reg + 4, 150 0xc0, ramp_bits << 6); 151 if (ret < 0) 152 dev_err(pfuze100->dev, "ramp failed, err %d\n", ret); 153 } else { 154 ret = -EACCES; 155 } 156 157 return ret; 158 } 159 160 static const struct regulator_ops pfuze100_ldo_regulator_ops = { 161 .enable = regulator_enable_regmap, 162 .disable = regulator_disable_regmap, 163 .is_enabled = regulator_is_enabled_regmap, 164 .list_voltage = regulator_list_voltage_linear, 165 .set_voltage_sel = regulator_set_voltage_sel_regmap, 166 .get_voltage_sel = regulator_get_voltage_sel_regmap, 167 }; 168 169 static const struct regulator_ops pfuze100_fixed_regulator_ops = { 170 .enable = regulator_enable_regmap, 171 .disable = regulator_disable_regmap, 172 .is_enabled = regulator_is_enabled_regmap, 173 .list_voltage = regulator_list_voltage_linear, 174 }; 175 176 static const struct regulator_ops pfuze100_sw_regulator_ops = { 177 .list_voltage = regulator_list_voltage_linear, 178 .set_voltage_sel = regulator_set_voltage_sel_regmap, 179 .get_voltage_sel = regulator_get_voltage_sel_regmap, 180 .set_voltage_time_sel = regulator_set_voltage_time_sel, 181 .set_ramp_delay = pfuze100_set_ramp_delay, 182 }; 183 184 static const struct regulator_ops pfuze100_sw_disable_regulator_ops = { 185 .enable = regulator_enable_regmap, 186 .disable = regulator_disable_regmap, 187 .is_enabled = regulator_is_enabled_regmap, 188 .list_voltage = regulator_list_voltage_linear, 189 .set_voltage_sel = regulator_set_voltage_sel_regmap, 190 .get_voltage_sel = regulator_get_voltage_sel_regmap, 191 .set_voltage_time_sel = regulator_set_voltage_time_sel, 192 .set_ramp_delay = pfuze100_set_ramp_delay, 193 }; 194 195 static const struct regulator_ops pfuze100_swb_regulator_ops = { 196 .enable = regulator_enable_regmap, 197 .disable = regulator_disable_regmap, 198 .is_enabled = regulator_is_enabled_regmap, 199 .list_voltage = regulator_list_voltage_table, 200 .map_voltage = regulator_map_voltage_ascend, 201 .set_voltage_sel = regulator_set_voltage_sel_regmap, 202 .get_voltage_sel = regulator_get_voltage_sel_regmap, 203 204 }; 205 206 static const struct regulator_ops pfuze3000_sw_regulator_ops = { 207 .enable = regulator_enable_regmap, 208 .disable = regulator_disable_regmap, 209 .is_enabled = regulator_is_enabled_regmap, 210 .list_voltage = regulator_list_voltage_table, 211 .map_voltage = regulator_map_voltage_ascend, 212 .set_voltage_sel = regulator_set_voltage_sel_regmap, 213 .get_voltage_sel = regulator_get_voltage_sel_regmap, 214 .set_voltage_time_sel = regulator_set_voltage_time_sel, 215 .set_ramp_delay = pfuze100_set_ramp_delay, 216 217 }; 218 219 #define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \ 220 [_chip ## _ ## _name] = { \ 221 .desc = { \ 222 .name = #_name, \ 223 .n_voltages = 1, \ 224 .ops = &pfuze100_fixed_regulator_ops, \ 225 .type = REGULATOR_VOLTAGE, \ 226 .id = _chip ## _ ## _name, \ 227 .owner = THIS_MODULE, \ 228 .min_uV = (voltage), \ 229 .enable_reg = (base), \ 230 .enable_mask = 0x10, \ 231 }, \ 232 } 233 234 #define PFUZE100_SW_REG(_chip, _name, base, min, max, step) \ 235 [_chip ## _ ## _name] = { \ 236 .desc = { \ 237 .name = #_name,\ 238 .n_voltages = ((max) - (min)) / (step) + 1, \ 239 .ops = &pfuze100_sw_regulator_ops, \ 240 .type = REGULATOR_VOLTAGE, \ 241 .id = _chip ## _ ## _name, \ 242 .owner = THIS_MODULE, \ 243 .min_uV = (min), \ 244 .uV_step = (step), \ 245 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ 246 .vsel_mask = 0x3f, \ 247 .enable_reg = (base) + PFUZE100_MODE_OFFSET, \ 248 .enable_mask = 0xf, \ 249 }, \ 250 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ 251 .stby_mask = 0x3f, \ 252 .sw_reg = true, \ 253 } 254 255 #define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \ 256 [_chip ## _ ## _name] = { \ 257 .desc = { \ 258 .name = #_name, \ 259 .n_voltages = ARRAY_SIZE(voltages), \ 260 .ops = &pfuze100_swb_regulator_ops, \ 261 .type = REGULATOR_VOLTAGE, \ 262 .id = _chip ## _ ## _name, \ 263 .owner = THIS_MODULE, \ 264 .volt_table = voltages, \ 265 .vsel_reg = (base), \ 266 .vsel_mask = (mask), \ 267 .enable_reg = (base), \ 268 .enable_mask = 0x48, \ 269 }, \ 270 } 271 272 #define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step) \ 273 [_chip ## _ ## _name] = { \ 274 .desc = { \ 275 .name = #_name, \ 276 .n_voltages = ((max) - (min)) / (step) + 1, \ 277 .ops = &pfuze100_ldo_regulator_ops, \ 278 .type = REGULATOR_VOLTAGE, \ 279 .id = _chip ## _ ## _name, \ 280 .owner = THIS_MODULE, \ 281 .min_uV = (min), \ 282 .uV_step = (step), \ 283 .vsel_reg = (base), \ 284 .vsel_mask = 0xf, \ 285 .enable_reg = (base), \ 286 .enable_mask = 0x10, \ 287 }, \ 288 .stby_reg = (base), \ 289 .stby_mask = 0x20, \ 290 } 291 292 #define PFUZE100_COIN_REG(_chip, _name, base, mask, voltages) \ 293 [_chip ## _ ## _name] = { \ 294 .desc = { \ 295 .name = #_name, \ 296 .n_voltages = ARRAY_SIZE(voltages), \ 297 .ops = &pfuze100_swb_regulator_ops, \ 298 .type = REGULATOR_VOLTAGE, \ 299 .id = _chip ## _ ## _name, \ 300 .owner = THIS_MODULE, \ 301 .volt_table = voltages, \ 302 .vsel_reg = (base), \ 303 .vsel_mask = (mask), \ 304 .enable_reg = (base), \ 305 .enable_mask = 0x8, \ 306 }, \ 307 } 308 309 #define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step) { \ 310 .desc = { \ 311 .name = #_name, \ 312 .n_voltages = ((max) - (min)) / (step) + 1, \ 313 .ops = &pfuze100_ldo_regulator_ops, \ 314 .type = REGULATOR_VOLTAGE, \ 315 .id = _chip ## _ ## _name, \ 316 .owner = THIS_MODULE, \ 317 .min_uV = (min), \ 318 .uV_step = (step), \ 319 .vsel_reg = (base), \ 320 .vsel_mask = 0x3, \ 321 .enable_reg = (base), \ 322 .enable_mask = 0x10, \ 323 }, \ 324 .stby_reg = (base), \ 325 .stby_mask = 0x20, \ 326 } 327 328 /* No linar case for the some switches of PFUZE3000 */ 329 #define PFUZE3000_SW_REG(_chip, _name, base, mask, voltages) \ 330 [_chip ## _ ## _name] = { \ 331 .desc = { \ 332 .name = #_name, \ 333 .n_voltages = ARRAY_SIZE(voltages), \ 334 .ops = &pfuze3000_sw_regulator_ops, \ 335 .type = REGULATOR_VOLTAGE, \ 336 .id = _chip ## _ ## _name, \ 337 .owner = THIS_MODULE, \ 338 .volt_table = voltages, \ 339 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ 340 .vsel_mask = (mask), \ 341 .enable_reg = (base) + PFUZE100_MODE_OFFSET, \ 342 .enable_mask = 0xf, \ 343 .enable_val = 0x8, \ 344 .enable_time = 500, \ 345 }, \ 346 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ 347 .stby_mask = (mask), \ 348 .sw_reg = true, \ 349 } 350 351 #define PFUZE3000_SW3_REG(_chip, _name, base, min, max, step) { \ 352 .desc = { \ 353 .name = #_name,\ 354 .n_voltages = ((max) - (min)) / (step) + 1, \ 355 .ops = &pfuze100_sw_regulator_ops, \ 356 .type = REGULATOR_VOLTAGE, \ 357 .id = _chip ## _ ## _name, \ 358 .owner = THIS_MODULE, \ 359 .min_uV = (min), \ 360 .uV_step = (step), \ 361 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ 362 .vsel_mask = 0xf, \ 363 }, \ 364 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ 365 .stby_mask = 0xf, \ 366 } 367 368 /* PFUZE100 */ 369 static struct pfuze_regulator pfuze100_regulators[] = { 370 PFUZE100_SW_REG(PFUZE100, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000), 371 PFUZE100_SW_REG(PFUZE100, SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000), 372 PFUZE100_SW_REG(PFUZE100, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000), 373 PFUZE100_SW_REG(PFUZE100, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000), 374 PFUZE100_SW_REG(PFUZE100, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000), 375 PFUZE100_SW_REG(PFUZE100, SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000), 376 PFUZE100_SWB_REG(PFUZE100, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst), 377 PFUZE100_SWB_REG(PFUZE100, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), 378 PFUZE100_FIXED_REG(PFUZE100, VREFDDR, PFUZE100_VREFDDRCON, 750000), 379 PFUZE100_VGEN_REG(PFUZE100, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000), 380 PFUZE100_VGEN_REG(PFUZE100, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), 381 PFUZE100_VGEN_REG(PFUZE100, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000), 382 PFUZE100_VGEN_REG(PFUZE100, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000), 383 PFUZE100_VGEN_REG(PFUZE100, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), 384 PFUZE100_VGEN_REG(PFUZE100, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), 385 PFUZE100_COIN_REG(PFUZE100, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin), 386 }; 387 388 static struct pfuze_regulator pfuze200_regulators[] = { 389 PFUZE100_SW_REG(PFUZE200, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000), 390 PFUZE100_SW_REG(PFUZE200, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000), 391 PFUZE100_SW_REG(PFUZE200, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000), 392 PFUZE100_SW_REG(PFUZE200, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000), 393 PFUZE100_SWB_REG(PFUZE200, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst), 394 PFUZE100_SWB_REG(PFUZE200, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), 395 PFUZE100_FIXED_REG(PFUZE200, VREFDDR, PFUZE100_VREFDDRCON, 750000), 396 PFUZE100_VGEN_REG(PFUZE200, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000), 397 PFUZE100_VGEN_REG(PFUZE200, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), 398 PFUZE100_VGEN_REG(PFUZE200, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000), 399 PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000), 400 PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), 401 PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), 402 PFUZE100_COIN_REG(PFUZE200, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin), 403 }; 404 405 static struct pfuze_regulator pfuze3000_regulators[] = { 406 PFUZE3000_SW_REG(PFUZE3000, SW1A, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a), 407 PFUZE100_SW_REG(PFUZE3000, SW1B, PFUZE100_SW1CVOL, 700000, 1475000, 25000), 408 PFUZE3000_SW_REG(PFUZE3000, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo), 409 PFUZE3000_SW3_REG(PFUZE3000, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000), 410 PFUZE100_SWB_REG(PFUZE3000, SWBST, PFUZE100_SWBSTCON1, 0x3, pfuze100_swbst), 411 PFUZE100_SWB_REG(PFUZE3000, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), 412 PFUZE100_FIXED_REG(PFUZE3000, VREFDDR, PFUZE100_VREFDDRCON, 750000), 413 PFUZE100_VGEN_REG(PFUZE3000, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000), 414 PFUZE100_VGEN_REG(PFUZE3000, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), 415 PFUZE3000_VCC_REG(PFUZE3000, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000), 416 PFUZE3000_VCC_REG(PFUZE3000, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000), 417 PFUZE100_VGEN_REG(PFUZE3000, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), 418 PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), 419 }; 420 421 static struct pfuze_regulator pfuze3001_regulators[] = { 422 PFUZE3000_SW_REG(PFUZE3001, SW1, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a), 423 PFUZE3000_SW_REG(PFUZE3001, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo), 424 PFUZE3000_SW3_REG(PFUZE3001, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000), 425 PFUZE100_SWB_REG(PFUZE3001, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), 426 PFUZE100_VGEN_REG(PFUZE3001, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000), 427 PFUZE100_VGEN_REG(PFUZE3001, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), 428 PFUZE3000_VCC_REG(PFUZE3001, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000), 429 PFUZE3000_VCC_REG(PFUZE3001, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000), 430 PFUZE100_VGEN_REG(PFUZE3001, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), 431 PFUZE100_VGEN_REG(PFUZE3001, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), 432 }; 433 434 /* PFUZE100 */ 435 static struct of_regulator_match pfuze100_matches[] = { 436 { .name = "sw1ab", }, 437 { .name = "sw1c", }, 438 { .name = "sw2", }, 439 { .name = "sw3a", }, 440 { .name = "sw3b", }, 441 { .name = "sw4", }, 442 { .name = "swbst", }, 443 { .name = "vsnvs", }, 444 { .name = "vrefddr", }, 445 { .name = "vgen1", }, 446 { .name = "vgen2", }, 447 { .name = "vgen3", }, 448 { .name = "vgen4", }, 449 { .name = "vgen5", }, 450 { .name = "vgen6", }, 451 { .name = "coin", }, 452 }; 453 454 /* PFUZE200 */ 455 static struct of_regulator_match pfuze200_matches[] = { 456 457 { .name = "sw1ab", }, 458 { .name = "sw2", }, 459 { .name = "sw3a", }, 460 { .name = "sw3b", }, 461 { .name = "swbst", }, 462 { .name = "vsnvs", }, 463 { .name = "vrefddr", }, 464 { .name = "vgen1", }, 465 { .name = "vgen2", }, 466 { .name = "vgen3", }, 467 { .name = "vgen4", }, 468 { .name = "vgen5", }, 469 { .name = "vgen6", }, 470 { .name = "coin", }, 471 }; 472 473 /* PFUZE3000 */ 474 static struct of_regulator_match pfuze3000_matches[] = { 475 476 { .name = "sw1a", }, 477 { .name = "sw1b", }, 478 { .name = "sw2", }, 479 { .name = "sw3", }, 480 { .name = "swbst", }, 481 { .name = "vsnvs", }, 482 { .name = "vrefddr", }, 483 { .name = "vldo1", }, 484 { .name = "vldo2", }, 485 { .name = "vccsd", }, 486 { .name = "v33", }, 487 { .name = "vldo3", }, 488 { .name = "vldo4", }, 489 }; 490 491 /* PFUZE3001 */ 492 static struct of_regulator_match pfuze3001_matches[] = { 493 494 { .name = "sw1", }, 495 { .name = "sw2", }, 496 { .name = "sw3", }, 497 { .name = "vsnvs", }, 498 { .name = "vldo1", }, 499 { .name = "vldo2", }, 500 { .name = "vccsd", }, 501 { .name = "v33", }, 502 { .name = "vldo3", }, 503 { .name = "vldo4", }, 504 }; 505 506 static struct of_regulator_match *pfuze_matches; 507 508 static int pfuze_parse_regulators_dt(struct pfuze_chip *chip) 509 { 510 struct device *dev = chip->dev; 511 struct device_node *np, *parent; 512 int ret; 513 514 np = of_node_get(dev->of_node); 515 if (!np) 516 return -EINVAL; 517 518 if (of_property_read_bool(np, "fsl,pfuze-support-disable-sw")) 519 chip->flags |= PFUZE_FLAG_DISABLE_SW; 520 521 parent = of_get_child_by_name(np, "regulators"); 522 if (!parent) { 523 dev_err(dev, "regulators node not found\n"); 524 of_node_put(np); 525 return -EINVAL; 526 } 527 528 switch (chip->chip_id) { 529 case PFUZE3001: 530 pfuze_matches = pfuze3001_matches; 531 ret = of_regulator_match(dev, parent, pfuze3001_matches, 532 ARRAY_SIZE(pfuze3001_matches)); 533 break; 534 case PFUZE3000: 535 pfuze_matches = pfuze3000_matches; 536 ret = of_regulator_match(dev, parent, pfuze3000_matches, 537 ARRAY_SIZE(pfuze3000_matches)); 538 break; 539 case PFUZE200: 540 pfuze_matches = pfuze200_matches; 541 ret = of_regulator_match(dev, parent, pfuze200_matches, 542 ARRAY_SIZE(pfuze200_matches)); 543 break; 544 545 case PFUZE100: 546 default: 547 pfuze_matches = pfuze100_matches; 548 ret = of_regulator_match(dev, parent, pfuze100_matches, 549 ARRAY_SIZE(pfuze100_matches)); 550 break; 551 } 552 553 of_node_put(parent); 554 of_node_put(np); 555 if (ret < 0) { 556 dev_err(dev, "Error parsing regulator init data: %d\n", 557 ret); 558 return ret; 559 } 560 561 return 0; 562 } 563 564 static inline struct regulator_init_data *match_init_data(int index) 565 { 566 return pfuze_matches[index].init_data; 567 } 568 569 static inline struct device_node *match_of_node(int index) 570 { 571 return pfuze_matches[index].of_node; 572 } 573 574 static struct pfuze_chip *syspm_pfuze_chip; 575 576 static void pfuze_power_off_prepare(void) 577 { 578 dev_info(syspm_pfuze_chip->dev, "Configure standby mode for power off"); 579 580 /* Switch from default mode: APS/APS to APS/Off */ 581 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1ABMODE, 582 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); 583 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1CMODE, 584 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); 585 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW2MODE, 586 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); 587 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3AMODE, 588 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); 589 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3BMODE, 590 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); 591 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW4MODE, 592 PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF); 593 594 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN1VOL, 595 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, 596 PFUZE100_VGENxSTBY); 597 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN2VOL, 598 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, 599 PFUZE100_VGENxSTBY); 600 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN3VOL, 601 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, 602 PFUZE100_VGENxSTBY); 603 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN4VOL, 604 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, 605 PFUZE100_VGENxSTBY); 606 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN5VOL, 607 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, 608 PFUZE100_VGENxSTBY); 609 regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN6VOL, 610 PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY, 611 PFUZE100_VGENxSTBY); 612 } 613 614 static int pfuze_power_off_prepare_init(struct pfuze_chip *pfuze_chip) 615 { 616 if (pfuze_chip->chip_id != PFUZE100) { 617 dev_warn(pfuze_chip->dev, "Requested pm_power_off_prepare handler for not supported chip\n"); 618 return -ENODEV; 619 } 620 621 if (pm_power_off_prepare) { 622 dev_warn(pfuze_chip->dev, "pm_power_off_prepare is already registered.\n"); 623 return -EBUSY; 624 } 625 626 if (syspm_pfuze_chip) { 627 dev_warn(pfuze_chip->dev, "syspm_pfuze_chip is already set.\n"); 628 return -EBUSY; 629 } 630 631 syspm_pfuze_chip = pfuze_chip; 632 pm_power_off_prepare = pfuze_power_off_prepare; 633 634 return 0; 635 } 636 637 static int pfuze_identify(struct pfuze_chip *pfuze_chip) 638 { 639 unsigned int value; 640 int ret; 641 642 ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value); 643 if (ret) 644 return ret; 645 646 if (((value & 0x0f) == 0x8) && (pfuze_chip->chip_id == PFUZE100)) { 647 /* 648 * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013 649 * as ID=8 in PFUZE100 650 */ 651 dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8"); 652 } else if ((value & 0x0f) != pfuze_chip->chip_id && 653 (value & 0xf0) >> 4 != pfuze_chip->chip_id && 654 (value != pfuze_chip->chip_id)) { 655 /* device id NOT match with your setting */ 656 dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value); 657 return -ENODEV; 658 } 659 660 ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value); 661 if (ret) 662 return ret; 663 dev_info(pfuze_chip->dev, 664 "Full layer: %x, Metal layer: %x\n", 665 (value & 0xf0) >> 4, value & 0x0f); 666 667 ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value); 668 if (ret) 669 return ret; 670 dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n", 671 (value & 0xc) >> 2, value & 0x3); 672 673 return 0; 674 } 675 676 static const struct regmap_config pfuze_regmap_config = { 677 .reg_bits = 8, 678 .val_bits = 8, 679 .max_register = PFUZE_NUMREGS - 1, 680 .cache_type = REGCACHE_RBTREE, 681 }; 682 683 static int pfuze100_regulator_probe(struct i2c_client *client, 684 const struct i2c_device_id *id) 685 { 686 struct pfuze_chip *pfuze_chip; 687 struct regulator_config config = { }; 688 int i, ret; 689 const struct of_device_id *match; 690 u32 regulator_num; 691 u32 sw_check_start, sw_check_end, sw_hi = 0x40; 692 693 pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip), 694 GFP_KERNEL); 695 if (!pfuze_chip) 696 return -ENOMEM; 697 698 if (client->dev.of_node) { 699 match = of_match_device(of_match_ptr(pfuze_dt_ids), 700 &client->dev); 701 if (!match) { 702 dev_err(&client->dev, "Error: No device match found\n"); 703 return -ENODEV; 704 } 705 pfuze_chip->chip_id = (int)(long)match->data; 706 } else if (id) { 707 pfuze_chip->chip_id = id->driver_data; 708 } else { 709 dev_err(&client->dev, "No dts match or id table match found\n"); 710 return -ENODEV; 711 } 712 713 i2c_set_clientdata(client, pfuze_chip); 714 pfuze_chip->dev = &client->dev; 715 716 pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config); 717 if (IS_ERR(pfuze_chip->regmap)) { 718 ret = PTR_ERR(pfuze_chip->regmap); 719 dev_err(&client->dev, 720 "regmap allocation failed with err %d\n", ret); 721 return ret; 722 } 723 724 ret = pfuze_identify(pfuze_chip); 725 if (ret) { 726 dev_err(&client->dev, "unrecognized pfuze chip ID!\n"); 727 return ret; 728 } 729 730 /* use the right regulators after identify the right device */ 731 switch (pfuze_chip->chip_id) { 732 case PFUZE3001: 733 pfuze_chip->pfuze_regulators = pfuze3001_regulators; 734 regulator_num = ARRAY_SIZE(pfuze3001_regulators); 735 sw_check_start = PFUZE3001_SW2; 736 sw_check_end = PFUZE3001_SW2; 737 sw_hi = 1 << 3; 738 break; 739 case PFUZE3000: 740 pfuze_chip->pfuze_regulators = pfuze3000_regulators; 741 regulator_num = ARRAY_SIZE(pfuze3000_regulators); 742 sw_check_start = PFUZE3000_SW2; 743 sw_check_end = PFUZE3000_SW2; 744 sw_hi = 1 << 3; 745 break; 746 case PFUZE200: 747 pfuze_chip->pfuze_regulators = pfuze200_regulators; 748 regulator_num = ARRAY_SIZE(pfuze200_regulators); 749 sw_check_start = PFUZE200_SW2; 750 sw_check_end = PFUZE200_SW3B; 751 break; 752 case PFUZE100: 753 default: 754 pfuze_chip->pfuze_regulators = pfuze100_regulators; 755 regulator_num = ARRAY_SIZE(pfuze100_regulators); 756 sw_check_start = PFUZE100_SW2; 757 sw_check_end = PFUZE100_SW4; 758 break; 759 } 760 dev_info(&client->dev, "pfuze%s found.\n", 761 (pfuze_chip->chip_id == PFUZE100) ? "100" : 762 (((pfuze_chip->chip_id == PFUZE200) ? "200" : 763 ((pfuze_chip->chip_id == PFUZE3000) ? "3000" : "3001")))); 764 765 memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators, 766 sizeof(pfuze_chip->regulator_descs)); 767 768 ret = pfuze_parse_regulators_dt(pfuze_chip); 769 if (ret) 770 return ret; 771 772 for (i = 0; i < regulator_num; i++) { 773 struct regulator_init_data *init_data; 774 struct regulator_desc *desc; 775 int val; 776 777 desc = &pfuze_chip->regulator_descs[i].desc; 778 779 init_data = match_init_data(i); 780 781 /* SW2~SW4 high bit check and modify the voltage value table */ 782 if (i >= sw_check_start && i <= sw_check_end) { 783 ret = regmap_read(pfuze_chip->regmap, 784 desc->vsel_reg, &val); 785 if (ret) { 786 dev_err(&client->dev, "Fails to read from the register.\n"); 787 return ret; 788 } 789 790 if (val & sw_hi) { 791 if (pfuze_chip->chip_id == PFUZE3000 || 792 pfuze_chip->chip_id == PFUZE3001) { 793 desc->volt_table = pfuze3000_sw2hi; 794 desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi); 795 } else { 796 desc->min_uV = 800000; 797 desc->uV_step = 50000; 798 desc->n_voltages = 51; 799 } 800 } 801 } 802 803 /* 804 * Allow SW regulators to turn off. Checking it trough a flag is 805 * a workaround to keep the backward compatibility with existing 806 * old dtb's which may relay on the fact that we didn't disable 807 * the switched regulator till yet. 808 */ 809 if (pfuze_chip->flags & PFUZE_FLAG_DISABLE_SW) { 810 if (pfuze_chip->chip_id == PFUZE100 || 811 pfuze_chip->chip_id == PFUZE200) { 812 if (pfuze_chip->regulator_descs[i].sw_reg) { 813 desc->ops = &pfuze100_sw_disable_regulator_ops; 814 desc->enable_val = 0x8; 815 desc->disable_val = 0x0; 816 desc->enable_time = 500; 817 } 818 } 819 } 820 821 config.dev = &client->dev; 822 config.init_data = init_data; 823 config.driver_data = pfuze_chip; 824 config.of_node = match_of_node(i); 825 826 pfuze_chip->regulators[i] = 827 devm_regulator_register(&client->dev, desc, &config); 828 if (IS_ERR(pfuze_chip->regulators[i])) { 829 dev_err(&client->dev, "register regulator%s failed\n", 830 pfuze_chip->pfuze_regulators[i].desc.name); 831 return PTR_ERR(pfuze_chip->regulators[i]); 832 } 833 } 834 835 if (of_property_read_bool(client->dev.of_node, 836 "fsl,pmic-stby-poweroff")) 837 return pfuze_power_off_prepare_init(pfuze_chip); 838 839 return 0; 840 } 841 842 static int pfuze100_regulator_remove(struct i2c_client *client) 843 { 844 if (syspm_pfuze_chip) { 845 syspm_pfuze_chip = NULL; 846 pm_power_off_prepare = NULL; 847 } 848 849 return 0; 850 } 851 852 static struct i2c_driver pfuze_driver = { 853 .driver = { 854 .name = "pfuze100-regulator", 855 .of_match_table = pfuze_dt_ids, 856 }, 857 .probe = pfuze100_regulator_probe, 858 .remove = pfuze100_regulator_remove, 859 }; 860 module_i2c_driver(pfuze_driver); 861 862 MODULE_AUTHOR("Robin Gong <b38343@freescale.com>"); 863 MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000/3001 PMIC"); 864 MODULE_LICENSE("GPL v2"); 865