1 /* 2 * Regulators driver for Marvell 88PM8607 3 * 4 * Copyright (C) 2009 Marvell International Ltd. 5 * Haojian Zhuang <haojian.zhuang@marvell.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #include <linux/kernel.h> 12 #include <linux/init.h> 13 #include <linux/err.h> 14 #include <linux/i2c.h> 15 #include <linux/platform_device.h> 16 #include <linux/regulator/driver.h> 17 #include <linux/regulator/machine.h> 18 #include <linux/mfd/88pm860x.h> 19 #include <linux/module.h> 20 21 struct pm8607_regulator_info { 22 struct regulator_desc desc; 23 struct pm860x_chip *chip; 24 struct regulator_dev *regulator; 25 struct i2c_client *i2c; 26 struct i2c_client *i2c_8606; 27 28 unsigned int *vol_table; 29 unsigned int *vol_suspend; 30 31 int update_reg; 32 int update_bit; 33 int slope_double; 34 }; 35 36 static const unsigned int BUCK1_table[] = { 37 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000, 38 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, 39 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, 40 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, 41 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 42 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 43 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 44 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 45 }; 46 47 static const unsigned int BUCK1_suspend_table[] = { 48 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 49 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 50 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 51 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 52 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 53 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 54 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 55 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 56 }; 57 58 static const unsigned int BUCK2_table[] = { 59 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, 60 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, 61 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, 62 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, 63 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 64 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, 65 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 66 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, 67 }; 68 69 static const unsigned int BUCK2_suspend_table[] = { 70 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, 71 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, 72 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, 73 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, 74 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 75 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, 76 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 77 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, 78 }; 79 80 static const unsigned int BUCK3_table[] = { 81 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 82 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 83 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 84 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 85 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 86 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 87 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 88 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 89 }; 90 91 static const unsigned int BUCK3_suspend_table[] = { 92 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 93 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 94 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 95 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 96 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 97 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 98 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 99 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 100 }; 101 102 static const unsigned int LDO1_table[] = { 103 1800000, 1200000, 2800000, 0, 104 }; 105 106 static const unsigned int LDO1_suspend_table[] = { 107 1800000, 1200000, 0, 0, 108 }; 109 110 static const unsigned int LDO2_table[] = { 111 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 112 }; 113 114 static const unsigned int LDO2_suspend_table[] = { 115 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 116 }; 117 118 static const unsigned int LDO3_table[] = { 119 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 120 }; 121 122 static const unsigned int LDO3_suspend_table[] = { 123 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 124 }; 125 126 static const unsigned int LDO4_table[] = { 127 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000, 128 }; 129 130 static const unsigned int LDO4_suspend_table[] = { 131 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000, 132 }; 133 134 static const unsigned int LDO5_table[] = { 135 2900000, 3000000, 3100000, 3300000, 136 }; 137 138 static const unsigned int LDO5_suspend_table[] = { 139 2900000, 0, 0, 0, 140 }; 141 142 static const unsigned int LDO6_table[] = { 143 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000, 144 }; 145 146 static const unsigned int LDO6_suspend_table[] = { 147 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000, 148 }; 149 150 static const unsigned int LDO7_table[] = { 151 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 152 }; 153 154 static const unsigned int LDO7_suspend_table[] = { 155 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 156 }; 157 158 static const unsigned int LDO8_table[] = { 159 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 160 }; 161 162 static const unsigned int LDO8_suspend_table[] = { 163 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 164 }; 165 166 static const unsigned int LDO9_table[] = { 167 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 168 }; 169 170 static const unsigned int LDO9_suspend_table[] = { 171 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 172 }; 173 174 static const unsigned int LDO10_table[] = { 175 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 176 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 177 }; 178 179 static const unsigned int LDO10_suspend_table[] = { 180 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 181 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 182 }; 183 184 static const unsigned int LDO12_table[] = { 185 1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000, 186 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 187 }; 188 189 static const unsigned int LDO12_suspend_table[] = { 190 1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000, 191 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 192 }; 193 194 static const unsigned int LDO13_table[] = { 195 1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 196 }; 197 198 static const unsigned int LDO13_suspend_table[] = { 199 0, 200 }; 201 202 static const unsigned int LDO14_table[] = { 203 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000, 204 }; 205 206 static const unsigned int LDO14_suspend_table[] = { 207 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000, 208 }; 209 210 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index) 211 { 212 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 213 int ret = -EINVAL; 214 215 if (info->vol_table && (index < rdev->desc->n_voltages)) { 216 ret = info->vol_table[index]; 217 if (info->slope_double) 218 ret <<= 1; 219 } 220 return ret; 221 } 222 223 static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) 224 { 225 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 226 uint8_t val; 227 int ret; 228 229 val = (uint8_t)(selector << (ffs(rdev->desc->vsel_mask) - 1)); 230 231 ret = pm860x_set_bits(info->i2c, rdev->desc->vsel_reg, 232 rdev->desc->vsel_mask, val); 233 if (ret) 234 return ret; 235 switch (info->desc.id) { 236 case PM8607_ID_BUCK1: 237 case PM8607_ID_BUCK3: 238 ret = pm860x_set_bits(info->i2c, info->update_reg, 239 1 << info->update_bit, 240 1 << info->update_bit); 241 break; 242 } 243 return ret; 244 } 245 246 static int pm8606_preg_enable(struct regulator_dev *rdev) 247 { 248 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 249 250 return pm860x_set_bits(info->i2c, rdev->desc->enable_reg, 251 1 << rdev->desc->enable_mask, 0); 252 } 253 254 static int pm8606_preg_disable(struct regulator_dev *rdev) 255 { 256 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 257 258 return pm860x_set_bits(info->i2c, rdev->desc->enable_reg, 259 1 << rdev->desc->enable_mask, 260 1 << rdev->desc->enable_mask); 261 } 262 263 static int pm8606_preg_is_enabled(struct regulator_dev *rdev) 264 { 265 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 266 int ret; 267 268 ret = pm860x_reg_read(info->i2c, rdev->desc->enable_reg); 269 if (ret < 0) 270 return ret; 271 272 return !((unsigned char)ret & (1 << rdev->desc->enable_mask)); 273 } 274 275 static struct regulator_ops pm8607_regulator_ops = { 276 .list_voltage = pm8607_list_voltage, 277 .set_voltage_sel = pm8607_set_voltage_sel, 278 .get_voltage_sel = regulator_get_voltage_sel_regmap, 279 .enable = regulator_enable_regmap, 280 .disable = regulator_disable_regmap, 281 .is_enabled = regulator_is_enabled_regmap, 282 }; 283 284 static struct regulator_ops pm8606_preg_ops = { 285 .enable = pm8606_preg_enable, 286 .disable = pm8606_preg_disable, 287 .is_enabled = pm8606_preg_is_enabled, 288 }; 289 290 #define PM8606_PREG(ereg, ebit) \ 291 { \ 292 .desc = { \ 293 .name = "PREG", \ 294 .ops = &pm8606_preg_ops, \ 295 .type = REGULATOR_CURRENT, \ 296 .id = PM8606_ID_PREG, \ 297 .owner = THIS_MODULE, \ 298 .enable_reg = PM8606_##ereg, \ 299 .enable_mask = (ebit), \ 300 }, \ 301 } 302 303 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \ 304 { \ 305 .desc = { \ 306 .name = #vreg, \ 307 .ops = &pm8607_regulator_ops, \ 308 .type = REGULATOR_VOLTAGE, \ 309 .id = PM8607_ID_##vreg, \ 310 .owner = THIS_MODULE, \ 311 .n_voltages = ARRAY_SIZE(vreg##_table), \ 312 .vsel_reg = PM8607_##vreg, \ 313 .vsel_mask = ARRAY_SIZE(vreg##_table) - 1, \ 314 .enable_reg = PM8607_##ereg, \ 315 .enable_mask = 1 << (ebit), \ 316 }, \ 317 .update_reg = PM8607_##ureg, \ 318 .update_bit = (ubit), \ 319 .slope_double = (0), \ 320 .vol_table = (unsigned int *)&vreg##_table, \ 321 .vol_suspend = (unsigned int *)&vreg##_suspend_table, \ 322 } 323 324 #define PM8607_LDO(_id, vreg, shift, ereg, ebit) \ 325 { \ 326 .desc = { \ 327 .name = "LDO" #_id, \ 328 .ops = &pm8607_regulator_ops, \ 329 .type = REGULATOR_VOLTAGE, \ 330 .id = PM8607_ID_LDO##_id, \ 331 .owner = THIS_MODULE, \ 332 .n_voltages = ARRAY_SIZE(LDO##_id##_table), \ 333 .vsel_reg = PM8607_##vreg, \ 334 .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \ 335 .enable_reg = PM8607_##ereg, \ 336 .enable_mask = 1 << (ebit), \ 337 }, \ 338 .slope_double = (0), \ 339 .vol_table = (unsigned int *)&LDO##_id##_table, \ 340 .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \ 341 } 342 343 static struct pm8607_regulator_info pm8607_regulator_info[] = { 344 PM8607_DVC(BUCK1, GO, 0, SUPPLIES_EN11, 0), 345 PM8607_DVC(BUCK2, GO, 1, SUPPLIES_EN11, 1), 346 PM8607_DVC(BUCK3, GO, 2, SUPPLIES_EN11, 2), 347 348 PM8607_LDO(1, LDO1, 0, SUPPLIES_EN11, 3), 349 PM8607_LDO(2, LDO2, 0, SUPPLIES_EN11, 4), 350 PM8607_LDO(3, LDO3, 0, SUPPLIES_EN11, 5), 351 PM8607_LDO(4, LDO4, 0, SUPPLIES_EN11, 6), 352 PM8607_LDO(5, LDO5, 0, SUPPLIES_EN11, 7), 353 PM8607_LDO(6, LDO6, 0, SUPPLIES_EN12, 0), 354 PM8607_LDO(7, LDO7, 0, SUPPLIES_EN12, 1), 355 PM8607_LDO(8, LDO8, 0, SUPPLIES_EN12, 2), 356 PM8607_LDO(9, LDO9, 0, SUPPLIES_EN12, 3), 357 PM8607_LDO(10, LDO10, 0, SUPPLIES_EN12, 4), 358 PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5), 359 PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0), 360 PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6), 361 362 PM8606_PREG(PREREGULATORB, 5), 363 }; 364 365 static int __devinit pm8607_regulator_probe(struct platform_device *pdev) 366 { 367 struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); 368 struct pm8607_regulator_info *info = NULL; 369 struct regulator_init_data *pdata = pdev->dev.platform_data; 370 struct regulator_config config = { }; 371 struct resource *res; 372 int i; 373 374 res = platform_get_resource(pdev, IORESOURCE_REG, 0); 375 if (res == NULL) { 376 dev_err(&pdev->dev, "No REG resource!\n"); 377 return -EINVAL; 378 } 379 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) { 380 info = &pm8607_regulator_info[i]; 381 if (info->desc.vsel_reg == res->start) 382 break; 383 } 384 if (i == ARRAY_SIZE(pm8607_regulator_info)) { 385 dev_err(&pdev->dev, "Failed to find regulator %llu\n", 386 (unsigned long long)res->start); 387 return -EINVAL; 388 } 389 info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; 390 info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion : 391 chip->client; 392 info->chip = chip; 393 394 /* check DVC ramp slope double */ 395 if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double) 396 info->slope_double = 1; 397 398 config.dev = &pdev->dev; 399 config.init_data = pdata; 400 config.driver_data = info; 401 402 if (chip->id == CHIP_PM8607) 403 config.regmap = chip->regmap; 404 else 405 config.regmap = chip->regmap_companion; 406 407 info->regulator = regulator_register(&info->desc, &config); 408 if (IS_ERR(info->regulator)) { 409 dev_err(&pdev->dev, "failed to register regulator %s\n", 410 info->desc.name); 411 return PTR_ERR(info->regulator); 412 } 413 414 platform_set_drvdata(pdev, info); 415 return 0; 416 } 417 418 static int __devexit pm8607_regulator_remove(struct platform_device *pdev) 419 { 420 struct pm8607_regulator_info *info = platform_get_drvdata(pdev); 421 422 platform_set_drvdata(pdev, NULL); 423 regulator_unregister(info->regulator); 424 return 0; 425 } 426 427 static struct platform_device_id pm8607_regulator_driver_ids[] = { 428 { 429 .name = "88pm860x-regulator", 430 .driver_data = 0, 431 }, { 432 .name = "88pm860x-preg", 433 .driver_data = 0, 434 }, 435 { }, 436 }; 437 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids); 438 439 static struct platform_driver pm8607_regulator_driver = { 440 .driver = { 441 .name = "88pm860x-regulator", 442 .owner = THIS_MODULE, 443 }, 444 .probe = pm8607_regulator_probe, 445 .remove = __devexit_p(pm8607_regulator_remove), 446 .id_table = pm8607_regulator_driver_ids, 447 }; 448 449 static int __init pm8607_regulator_init(void) 450 { 451 return platform_driver_register(&pm8607_regulator_driver); 452 } 453 subsys_initcall(pm8607_regulator_init); 454 455 static void __exit pm8607_regulator_exit(void) 456 { 457 platform_driver_unregister(&pm8607_regulator_driver); 458 } 459 module_exit(pm8607_regulator_exit); 460 461 MODULE_LICENSE("GPL"); 462 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>"); 463 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC"); 464 MODULE_ALIAS("platform:88pm8607-regulator"); 465