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