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/of.h> 15 #include <linux/regulator/of_regulator.h> 16 #include <linux/platform_device.h> 17 #include <linux/regulator/driver.h> 18 #include <linux/regulator/machine.h> 19 #include <linux/mfd/88pm860x.h> 20 #include <linux/module.h> 21 22 struct pm8607_regulator_info { 23 struct regulator_desc desc; 24 25 unsigned int *vol_suspend; 26 27 int slope_double; 28 }; 29 30 static const unsigned int BUCK1_table[] = { 31 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000, 32 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, 33 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, 34 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, 35 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 36 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 37 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 38 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 39 }; 40 41 static const unsigned int BUCK1_suspend_table[] = { 42 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 43 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 44 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 45 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 46 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 47 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 48 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 49 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 50 }; 51 52 static const unsigned int BUCK2_table[] = { 53 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, 54 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, 55 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, 56 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, 57 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 58 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, 59 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 60 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, 61 }; 62 63 static const unsigned int BUCK2_suspend_table[] = { 64 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, 65 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, 66 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, 67 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, 68 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 69 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, 70 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 71 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, 72 }; 73 74 static const unsigned int BUCK3_table[] = { 75 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 76 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 77 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 78 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 79 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 80 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 81 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 82 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 83 }; 84 85 static const unsigned int BUCK3_suspend_table[] = { 86 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 87 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 88 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 89 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 90 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 91 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 92 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 93 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 94 }; 95 96 static const unsigned int LDO1_table[] = { 97 1800000, 1200000, 2800000, 0, 98 }; 99 100 static const unsigned int LDO1_suspend_table[] = { 101 1800000, 1200000, 0, 0, 102 }; 103 104 static const unsigned int LDO2_table[] = { 105 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 106 }; 107 108 static const unsigned int LDO2_suspend_table[] = { 109 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 110 }; 111 112 static const unsigned int LDO3_table[] = { 113 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 114 }; 115 116 static const unsigned int LDO3_suspend_table[] = { 117 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 118 }; 119 120 static const unsigned int LDO4_table[] = { 121 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000, 122 }; 123 124 static const unsigned int LDO4_suspend_table[] = { 125 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000, 126 }; 127 128 static const unsigned int LDO5_table[] = { 129 2900000, 3000000, 3100000, 3300000, 130 }; 131 132 static const unsigned int LDO5_suspend_table[] = { 133 2900000, 0, 0, 0, 134 }; 135 136 static const unsigned int LDO6_table[] = { 137 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000, 138 }; 139 140 static const unsigned int LDO6_suspend_table[] = { 141 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000, 142 }; 143 144 static const unsigned int LDO7_table[] = { 145 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 146 }; 147 148 static const unsigned int LDO7_suspend_table[] = { 149 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 150 }; 151 152 static const unsigned int LDO8_table[] = { 153 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 154 }; 155 156 static const unsigned int LDO8_suspend_table[] = { 157 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 158 }; 159 160 static const unsigned int LDO9_table[] = { 161 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 162 }; 163 164 static const unsigned int LDO9_suspend_table[] = { 165 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 166 }; 167 168 static const unsigned int LDO10_table[] = { 169 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 170 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 171 }; 172 173 static const unsigned int LDO10_suspend_table[] = { 174 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 175 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 176 }; 177 178 static const unsigned int LDO12_table[] = { 179 1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000, 180 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 181 }; 182 183 static const unsigned int LDO12_suspend_table[] = { 184 1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000, 185 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 186 }; 187 188 static const unsigned int LDO13_table[] = { 189 1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 190 }; 191 192 static const unsigned int LDO13_suspend_table[] = { 193 0, 194 }; 195 196 static const unsigned int LDO14_table[] = { 197 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000, 198 }; 199 200 static const unsigned int LDO14_suspend_table[] = { 201 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000, 202 }; 203 204 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index) 205 { 206 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 207 int ret; 208 209 ret = regulator_list_voltage_table(rdev, index); 210 if (ret < 0) 211 return ret; 212 213 if (info->slope_double) 214 ret <<= 1; 215 216 return ret; 217 } 218 219 static const struct regulator_ops pm8607_regulator_ops = { 220 .list_voltage = pm8607_list_voltage, 221 .set_voltage_sel = regulator_set_voltage_sel_regmap, 222 .get_voltage_sel = regulator_get_voltage_sel_regmap, 223 .enable = regulator_enable_regmap, 224 .disable = regulator_disable_regmap, 225 .is_enabled = regulator_is_enabled_regmap, 226 }; 227 228 static const struct regulator_ops pm8606_preg_ops = { 229 .enable = regulator_enable_regmap, 230 .disable = regulator_disable_regmap, 231 .is_enabled = regulator_is_enabled_regmap, 232 }; 233 234 #define PM8606_PREG(ereg, ebit) \ 235 { \ 236 .desc = { \ 237 .name = "PREG", \ 238 .ops = &pm8606_preg_ops, \ 239 .type = REGULATOR_CURRENT, \ 240 .id = PM8606_ID_PREG, \ 241 .owner = THIS_MODULE, \ 242 .enable_reg = PM8606_##ereg, \ 243 .enable_mask = (ebit), \ 244 .enable_is_inverted = true, \ 245 }, \ 246 } 247 248 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \ 249 { \ 250 .desc = { \ 251 .name = #vreg, \ 252 .ops = &pm8607_regulator_ops, \ 253 .type = REGULATOR_VOLTAGE, \ 254 .id = PM8607_ID_##vreg, \ 255 .owner = THIS_MODULE, \ 256 .volt_table = vreg##_table, \ 257 .n_voltages = ARRAY_SIZE(vreg##_table), \ 258 .vsel_reg = PM8607_##vreg, \ 259 .vsel_mask = ARRAY_SIZE(vreg##_table) - 1, \ 260 .apply_reg = PM8607_##ureg, \ 261 .apply_bit = (ubit), \ 262 .enable_reg = PM8607_##ereg, \ 263 .enable_mask = 1 << (ebit), \ 264 }, \ 265 .slope_double = (0), \ 266 .vol_suspend = (unsigned int *)&vreg##_suspend_table, \ 267 } 268 269 #define PM8607_LDO(_id, vreg, shift, ereg, ebit) \ 270 { \ 271 .desc = { \ 272 .name = "LDO" #_id, \ 273 .ops = &pm8607_regulator_ops, \ 274 .type = REGULATOR_VOLTAGE, \ 275 .id = PM8607_ID_LDO##_id, \ 276 .owner = THIS_MODULE, \ 277 .volt_table = LDO##_id##_table, \ 278 .n_voltages = ARRAY_SIZE(LDO##_id##_table), \ 279 .vsel_reg = PM8607_##vreg, \ 280 .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \ 281 .enable_reg = PM8607_##ereg, \ 282 .enable_mask = 1 << (ebit), \ 283 }, \ 284 .slope_double = (0), \ 285 .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \ 286 } 287 288 static struct pm8607_regulator_info pm8607_regulator_info[] = { 289 PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0), 290 PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1), 291 PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2), 292 293 PM8607_LDO(1, LDO1, 0, SUPPLIES_EN11, 3), 294 PM8607_LDO(2, LDO2, 0, SUPPLIES_EN11, 4), 295 PM8607_LDO(3, LDO3, 0, SUPPLIES_EN11, 5), 296 PM8607_LDO(4, LDO4, 0, SUPPLIES_EN11, 6), 297 PM8607_LDO(5, LDO5, 0, SUPPLIES_EN11, 7), 298 PM8607_LDO(6, LDO6, 0, SUPPLIES_EN12, 0), 299 PM8607_LDO(7, LDO7, 0, SUPPLIES_EN12, 1), 300 PM8607_LDO(8, LDO8, 0, SUPPLIES_EN12, 2), 301 PM8607_LDO(9, LDO9, 0, SUPPLIES_EN12, 3), 302 PM8607_LDO(10, LDO10, 0, SUPPLIES_EN12, 4), 303 PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5), 304 PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0), 305 PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6), 306 }; 307 308 static struct pm8607_regulator_info pm8606_regulator_info[] = { 309 PM8606_PREG(PREREGULATORB, 5), 310 }; 311 312 #ifdef CONFIG_OF 313 static int pm8607_regulator_dt_init(struct platform_device *pdev, 314 struct pm8607_regulator_info *info, 315 struct regulator_config *config) 316 { 317 struct device_node *nproot, *np; 318 nproot = pdev->dev.parent->of_node; 319 if (!nproot) 320 return -ENODEV; 321 nproot = of_get_child_by_name(nproot, "regulators"); 322 if (!nproot) { 323 dev_err(&pdev->dev, "failed to find regulators node\n"); 324 return -ENODEV; 325 } 326 for_each_child_of_node(nproot, np) { 327 if (of_node_name_eq(np, info->desc.name)) { 328 config->init_data = 329 of_get_regulator_init_data(&pdev->dev, np, 330 &info->desc); 331 config->of_node = np; 332 break; 333 } 334 } 335 of_node_put(nproot); 336 return 0; 337 } 338 #else 339 #define pm8607_regulator_dt_init(x, y, z) (-1) 340 #endif 341 342 static int pm8607_regulator_probe(struct platform_device *pdev) 343 { 344 struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); 345 struct pm8607_regulator_info *info = NULL; 346 struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev); 347 struct regulator_config config = { }; 348 struct regulator_dev *rdev; 349 struct resource *res; 350 int i; 351 352 res = platform_get_resource(pdev, IORESOURCE_REG, 0); 353 if (res) { 354 /* There're resources in 88PM8607 regulator driver */ 355 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) { 356 info = &pm8607_regulator_info[i]; 357 if (info->desc.vsel_reg == res->start) 358 break; 359 } 360 if (i == ARRAY_SIZE(pm8607_regulator_info)) { 361 dev_err(&pdev->dev, "Failed to find regulator %llu\n", 362 (unsigned long long)res->start); 363 return -EINVAL; 364 } 365 } else { 366 /* There's no resource in 88PM8606 PREG regulator driver */ 367 info = &pm8606_regulator_info[0]; 368 /* i is used to check regulator ID */ 369 i = -1; 370 } 371 372 /* check DVC ramp slope double */ 373 if ((i == PM8607_ID_BUCK3) && chip->buck3_double) 374 info->slope_double = 1; 375 376 config.dev = &pdev->dev; 377 config.driver_data = info; 378 379 if (pm8607_regulator_dt_init(pdev, info, &config)) 380 if (pdata) 381 config.init_data = pdata; 382 383 if (chip->id == CHIP_PM8607) 384 config.regmap = chip->regmap; 385 else 386 config.regmap = chip->regmap_companion; 387 388 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); 389 if (IS_ERR(rdev)) { 390 dev_err(&pdev->dev, "failed to register regulator %s\n", 391 info->desc.name); 392 return PTR_ERR(rdev); 393 } 394 395 platform_set_drvdata(pdev, info); 396 return 0; 397 } 398 399 static const struct platform_device_id pm8607_regulator_driver_ids[] = { 400 { 401 .name = "88pm860x-regulator", 402 .driver_data = 0, 403 }, { 404 .name = "88pm860x-preg", 405 .driver_data = 0, 406 }, 407 { }, 408 }; 409 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids); 410 411 static struct platform_driver pm8607_regulator_driver = { 412 .driver = { 413 .name = "88pm860x-regulator", 414 }, 415 .probe = pm8607_regulator_probe, 416 .id_table = pm8607_regulator_driver_ids, 417 }; 418 419 static int __init pm8607_regulator_init(void) 420 { 421 return platform_driver_register(&pm8607_regulator_driver); 422 } 423 subsys_initcall(pm8607_regulator_init); 424 425 static void __exit pm8607_regulator_exit(void) 426 { 427 platform_driver_unregister(&pm8607_regulator_driver); 428 } 429 module_exit(pm8607_regulator_exit); 430 431 MODULE_LICENSE("GPL"); 432 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>"); 433 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC"); 434 MODULE_ALIAS("platform:88pm8607-regulator"); 435