Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 1 | /* |
| 2 | * tps65023-regulator.c |
| 3 | * |
| 4 | * Supports TPS65023 Regulator |
| 5 | * |
| 6 | * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation version 2. |
| 11 | * |
| 12 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, |
| 13 | * whether express or implied; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/err.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/regulator/driver.h> |
| 24 | #include <linux/regulator/machine.h> |
| 25 | #include <linux/i2c.h> |
| 26 | #include <linux/delay.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 27 | #include <linux/slab.h> |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 28 | #include <linux/regmap.h> |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 29 | |
| 30 | /* Register definitions */ |
| 31 | #define TPS65023_REG_VERSION 0 |
| 32 | #define TPS65023_REG_PGOODZ 1 |
| 33 | #define TPS65023_REG_MASK 2 |
| 34 | #define TPS65023_REG_REG_CTRL 3 |
| 35 | #define TPS65023_REG_CON_CTRL 4 |
| 36 | #define TPS65023_REG_CON_CTRL2 5 |
| 37 | #define TPS65023_REG_DEF_CORE 6 |
| 38 | #define TPS65023_REG_DEFSLEW 7 |
| 39 | #define TPS65023_REG_LDO_CTRL 8 |
| 40 | |
| 41 | /* PGOODZ bitfields */ |
| 42 | #define TPS65023_PGOODZ_PWRFAILZ BIT(7) |
| 43 | #define TPS65023_PGOODZ_LOWBATTZ BIT(6) |
| 44 | #define TPS65023_PGOODZ_VDCDC1 BIT(5) |
| 45 | #define TPS65023_PGOODZ_VDCDC2 BIT(4) |
| 46 | #define TPS65023_PGOODZ_VDCDC3 BIT(3) |
| 47 | #define TPS65023_PGOODZ_LDO2 BIT(2) |
| 48 | #define TPS65023_PGOODZ_LDO1 BIT(1) |
| 49 | |
| 50 | /* MASK bitfields */ |
| 51 | #define TPS65023_MASK_PWRFAILZ BIT(7) |
| 52 | #define TPS65023_MASK_LOWBATTZ BIT(6) |
| 53 | #define TPS65023_MASK_VDCDC1 BIT(5) |
| 54 | #define TPS65023_MASK_VDCDC2 BIT(4) |
| 55 | #define TPS65023_MASK_VDCDC3 BIT(3) |
| 56 | #define TPS65023_MASK_LDO2 BIT(2) |
| 57 | #define TPS65023_MASK_LDO1 BIT(1) |
| 58 | |
| 59 | /* REG_CTRL bitfields */ |
| 60 | #define TPS65023_REG_CTRL_VDCDC1_EN BIT(5) |
| 61 | #define TPS65023_REG_CTRL_VDCDC2_EN BIT(4) |
| 62 | #define TPS65023_REG_CTRL_VDCDC3_EN BIT(3) |
| 63 | #define TPS65023_REG_CTRL_LDO2_EN BIT(2) |
| 64 | #define TPS65023_REG_CTRL_LDO1_EN BIT(1) |
| 65 | |
Marcus Folkesson | fc999b8 | 2011-08-04 13:33:49 +0200 | [diff] [blame] | 66 | /* REG_CTRL2 bitfields */ |
| 67 | #define TPS65023_REG_CTRL2_GO BIT(7) |
| 68 | #define TPS65023_REG_CTRL2_CORE_ADJ BIT(6) |
| 69 | #define TPS65023_REG_CTRL2_DCDC2 BIT(2) |
Marcus Folkesson | f068ad8 | 2011-08-08 20:29:32 +0200 | [diff] [blame] | 70 | #define TPS65023_REG_CTRL2_DCDC1 BIT(1) |
| 71 | #define TPS65023_REG_CTRL2_DCDC3 BIT(0) |
| 72 | |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 73 | /* LDO_CTRL bitfields */ |
| 74 | #define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4) |
| 75 | #define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4)) |
| 76 | |
| 77 | /* Number of step-down converters available */ |
| 78 | #define TPS65023_NUM_DCDC 3 |
| 79 | /* Number of LDO voltage regulators available */ |
| 80 | #define TPS65023_NUM_LDO 2 |
| 81 | /* Number of total regulators available */ |
| 82 | #define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO) |
| 83 | |
| 84 | /* DCDCs */ |
| 85 | #define TPS65023_DCDC_1 0 |
| 86 | #define TPS65023_DCDC_2 1 |
| 87 | #define TPS65023_DCDC_3 2 |
| 88 | /* LDOs */ |
| 89 | #define TPS65023_LDO_1 3 |
| 90 | #define TPS65023_LDO_2 4 |
| 91 | |
| 92 | #define TPS65023_MAX_REG_ID TPS65023_LDO_2 |
| 93 | |
| 94 | /* Supported voltage values for regulators */ |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 95 | static const u16 VCORE_VSEL_table[] = { |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 96 | 800, 825, 850, 875, |
| 97 | 900, 925, 950, 975, |
| 98 | 1000, 1025, 1050, 1075, |
| 99 | 1100, 1125, 1150, 1175, |
| 100 | 1200, 1225, 1250, 1275, |
| 101 | 1300, 1325, 1350, 1375, |
| 102 | 1400, 1425, 1450, 1475, |
| 103 | 1500, 1525, 1550, 1600, |
| 104 | }; |
| 105 | |
Marcus Folkesson | 437afd2 | 2011-08-08 20:29:35 +0200 | [diff] [blame] | 106 | /* Supported voltage values for LDO regulators for tps65020 */ |
| 107 | static const u16 TPS65020_LDO1_VSEL_table[] = { |
| 108 | 1000, 1050, 1100, 1300, |
| 109 | 1800, 2500, 3000, 3300, |
| 110 | }; |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 111 | |
Marcus Folkesson | 437afd2 | 2011-08-08 20:29:35 +0200 | [diff] [blame] | 112 | static const u16 TPS65020_LDO2_VSEL_table[] = { |
| 113 | 1000, 1050, 1100, 1300, |
| 114 | 1800, 2500, 3000, 3300, |
| 115 | }; |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 116 | |
| 117 | /* Supported voltage values for LDO regulators |
| 118 | * for tps65021 and tps65023 */ |
| 119 | static const u16 TPS65023_LDO1_VSEL_table[] = { |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 120 | 1000, 1100, 1300, 1800, |
| 121 | 2200, 2600, 2800, 3150, |
| 122 | }; |
| 123 | |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 124 | static const u16 TPS65023_LDO2_VSEL_table[] = { |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 125 | 1050, 1200, 1300, 1800, |
| 126 | 2500, 2800, 3000, 3300, |
| 127 | }; |
| 128 | |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 129 | /* Regulator specific details */ |
| 130 | struct tps_info { |
| 131 | const char *name; |
| 132 | unsigned min_uV; |
| 133 | unsigned max_uV; |
| 134 | bool fixed; |
| 135 | u8 table_len; |
| 136 | const u16 *table; |
| 137 | }; |
| 138 | |
| 139 | /* PMIC details */ |
| 140 | struct tps_pmic { |
| 141 | struct regulator_desc desc[TPS65023_NUM_REGULATOR]; |
| 142 | struct i2c_client *client; |
| 143 | struct regulator_dev *rdev[TPS65023_NUM_REGULATOR]; |
| 144 | const struct tps_info *info[TPS65023_NUM_REGULATOR]; |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 145 | struct regmap *regmap; |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 146 | u8 core_regulator; |
| 147 | }; |
| 148 | |
| 149 | /* Struct passed as driver data */ |
| 150 | struct tps_driver_data { |
| 151 | const struct tps_info *info; |
| 152 | u8 core_regulator; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 153 | }; |
| 154 | |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 155 | static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) |
| 156 | { |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 157 | return regmap_update_bits(tps->regmap, reg, mask, mask); |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) |
| 161 | { |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 162 | return regmap_update_bits(tps->regmap, reg, mask, 0); |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg) |
| 166 | { |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 167 | unsigned int val; |
| 168 | int ret; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 169 | |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 170 | ret = regmap_read(tps->regmap, reg, &val); |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 171 | |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 172 | if (ret != 0) |
| 173 | return ret; |
| 174 | else |
| 175 | return val; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val) |
| 179 | { |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 180 | return regmap_write(tps->regmap, reg, val); |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | static int tps65023_dcdc_is_enabled(struct regulator_dev *dev) |
| 184 | { |
| 185 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 186 | int data, dcdc = rdev_get_id(dev); |
| 187 | u8 shift; |
| 188 | |
| 189 | if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) |
| 190 | return -EINVAL; |
| 191 | |
| 192 | shift = TPS65023_NUM_REGULATOR - dcdc; |
| 193 | data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); |
| 194 | |
| 195 | if (data < 0) |
| 196 | return data; |
| 197 | else |
| 198 | return (data & 1<<shift) ? 1 : 0; |
| 199 | } |
| 200 | |
| 201 | static int tps65023_ldo_is_enabled(struct regulator_dev *dev) |
| 202 | { |
| 203 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 204 | int data, ldo = rdev_get_id(dev); |
| 205 | u8 shift; |
| 206 | |
| 207 | if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) |
| 208 | return -EINVAL; |
| 209 | |
| 210 | shift = (ldo == TPS65023_LDO_1 ? 1 : 2); |
| 211 | data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); |
| 212 | |
| 213 | if (data < 0) |
| 214 | return data; |
| 215 | else |
| 216 | return (data & 1<<shift) ? 1 : 0; |
| 217 | } |
| 218 | |
| 219 | static int tps65023_dcdc_enable(struct regulator_dev *dev) |
| 220 | { |
| 221 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 222 | int dcdc = rdev_get_id(dev); |
| 223 | u8 shift; |
| 224 | |
| 225 | if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) |
| 226 | return -EINVAL; |
| 227 | |
| 228 | shift = TPS65023_NUM_REGULATOR - dcdc; |
| 229 | return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); |
| 230 | } |
| 231 | |
| 232 | static int tps65023_dcdc_disable(struct regulator_dev *dev) |
| 233 | { |
| 234 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 235 | int dcdc = rdev_get_id(dev); |
| 236 | u8 shift; |
| 237 | |
| 238 | if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) |
| 239 | return -EINVAL; |
| 240 | |
| 241 | shift = TPS65023_NUM_REGULATOR - dcdc; |
| 242 | return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); |
| 243 | } |
| 244 | |
| 245 | static int tps65023_ldo_enable(struct regulator_dev *dev) |
| 246 | { |
| 247 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 248 | int ldo = rdev_get_id(dev); |
| 249 | u8 shift; |
| 250 | |
| 251 | if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) |
| 252 | return -EINVAL; |
| 253 | |
| 254 | shift = (ldo == TPS65023_LDO_1 ? 1 : 2); |
| 255 | return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); |
| 256 | } |
| 257 | |
| 258 | static int tps65023_ldo_disable(struct regulator_dev *dev) |
| 259 | { |
| 260 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 261 | int ldo = rdev_get_id(dev); |
| 262 | u8 shift; |
| 263 | |
| 264 | if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) |
| 265 | return -EINVAL; |
| 266 | |
| 267 | shift = (ldo == TPS65023_LDO_1 ? 1 : 2); |
| 268 | return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); |
| 269 | } |
| 270 | |
| 271 | static int tps65023_dcdc_get_voltage(struct regulator_dev *dev) |
| 272 | { |
| 273 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 274 | int data, dcdc = rdev_get_id(dev); |
| 275 | |
| 276 | if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) |
| 277 | return -EINVAL; |
| 278 | |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 279 | if (dcdc == tps->core_regulator) { |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 280 | data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE); |
| 281 | if (data < 0) |
| 282 | return data; |
| 283 | data &= (tps->info[dcdc]->table_len - 1); |
| 284 | return tps->info[dcdc]->table[data] * 1000; |
| 285 | } else |
| 286 | return tps->info[dcdc]->min_uV; |
| 287 | } |
| 288 | |
| 289 | static int tps65023_dcdc_set_voltage(struct regulator_dev *dev, |
Mark Brown | 3a93f2a | 2010-11-10 14:38:29 +0000 | [diff] [blame] | 290 | int min_uV, int max_uV, |
| 291 | unsigned *selector) |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 292 | { |
| 293 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 294 | int dcdc = rdev_get_id(dev); |
| 295 | int vsel; |
Marcus Folkesson | cc17ef3 | 2011-08-08 20:29:33 +0200 | [diff] [blame] | 296 | int ret; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 297 | |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 298 | if (dcdc != tps->core_regulator) |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 299 | return -EINVAL; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 300 | if (min_uV < tps->info[dcdc]->min_uV |
| 301 | || min_uV > tps->info[dcdc]->max_uV) |
| 302 | return -EINVAL; |
| 303 | if (max_uV < tps->info[dcdc]->min_uV |
| 304 | || max_uV > tps->info[dcdc]->max_uV) |
| 305 | return -EINVAL; |
| 306 | |
| 307 | for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { |
| 308 | int mV = tps->info[dcdc]->table[vsel]; |
| 309 | int uV = mV * 1000; |
| 310 | |
| 311 | /* Break at the first in-range value */ |
| 312 | if (min_uV <= uV && uV <= max_uV) |
| 313 | break; |
| 314 | } |
| 315 | |
Mark Brown | 3a93f2a | 2010-11-10 14:38:29 +0000 | [diff] [blame] | 316 | *selector = vsel; |
| 317 | |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 318 | if (vsel == tps->info[dcdc]->table_len) |
Marcus Folkesson | cc17ef3 | 2011-08-08 20:29:33 +0200 | [diff] [blame] | 319 | goto failed; |
| 320 | |
| 321 | ret = tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel); |
| 322 | |
| 323 | /* Tell the chip that we have changed the value in DEFCORE |
| 324 | * and its time to update the core voltage |
| 325 | */ |
| 326 | tps_65023_set_bits(tps, TPS65023_REG_CON_CTRL2, |
| 327 | TPS65023_REG_CTRL2_GO); |
| 328 | |
| 329 | return ret; |
| 330 | |
| 331 | failed: |
| 332 | return -EINVAL; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | static int tps65023_ldo_get_voltage(struct regulator_dev *dev) |
| 336 | { |
| 337 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 338 | int data, ldo = rdev_get_id(dev); |
| 339 | |
| 340 | if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) |
| 341 | return -EINVAL; |
| 342 | |
| 343 | data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); |
| 344 | if (data < 0) |
| 345 | return data; |
| 346 | |
| 347 | data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)); |
| 348 | data &= (tps->info[ldo]->table_len - 1); |
| 349 | return tps->info[ldo]->table[data] * 1000; |
| 350 | } |
| 351 | |
| 352 | static int tps65023_ldo_set_voltage(struct regulator_dev *dev, |
Mark Brown | 3a93f2a | 2010-11-10 14:38:29 +0000 | [diff] [blame] | 353 | int min_uV, int max_uV, unsigned *selector) |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 354 | { |
| 355 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 356 | int data, vsel, ldo = rdev_get_id(dev); |
| 357 | |
| 358 | if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) |
| 359 | return -EINVAL; |
| 360 | |
| 361 | if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) |
| 362 | return -EINVAL; |
| 363 | if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) |
| 364 | return -EINVAL; |
| 365 | |
| 366 | for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { |
| 367 | int mV = tps->info[ldo]->table[vsel]; |
| 368 | int uV = mV * 1000; |
| 369 | |
| 370 | /* Break at the first in-range value */ |
| 371 | if (min_uV <= uV && uV <= max_uV) |
| 372 | break; |
| 373 | } |
| 374 | |
| 375 | if (vsel == tps->info[ldo]->table_len) |
| 376 | return -EINVAL; |
| 377 | |
Mark Brown | 3a93f2a | 2010-11-10 14:38:29 +0000 | [diff] [blame] | 378 | *selector = vsel; |
| 379 | |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 380 | data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); |
| 381 | if (data < 0) |
| 382 | return data; |
| 383 | |
| 384 | data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1); |
| 385 | data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1))); |
| 386 | return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data); |
| 387 | } |
| 388 | |
| 389 | static int tps65023_dcdc_list_voltage(struct regulator_dev *dev, |
| 390 | unsigned selector) |
| 391 | { |
| 392 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 393 | int dcdc = rdev_get_id(dev); |
| 394 | |
| 395 | if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) |
| 396 | return -EINVAL; |
| 397 | |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 398 | if (dcdc == tps->core_regulator) { |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 399 | if (selector >= tps->info[dcdc]->table_len) |
| 400 | return -EINVAL; |
| 401 | else |
| 402 | return tps->info[dcdc]->table[selector] * 1000; |
| 403 | } else |
| 404 | return tps->info[dcdc]->min_uV; |
| 405 | } |
| 406 | |
| 407 | static int tps65023_ldo_list_voltage(struct regulator_dev *dev, |
| 408 | unsigned selector) |
| 409 | { |
| 410 | struct tps_pmic *tps = rdev_get_drvdata(dev); |
| 411 | int ldo = rdev_get_id(dev); |
| 412 | |
| 413 | if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) |
| 414 | return -EINVAL; |
| 415 | |
| 416 | if (selector >= tps->info[ldo]->table_len) |
| 417 | return -EINVAL; |
| 418 | else |
| 419 | return tps->info[ldo]->table[selector] * 1000; |
| 420 | } |
| 421 | |
| 422 | /* Operations permitted on VDCDCx */ |
| 423 | static struct regulator_ops tps65023_dcdc_ops = { |
| 424 | .is_enabled = tps65023_dcdc_is_enabled, |
| 425 | .enable = tps65023_dcdc_enable, |
| 426 | .disable = tps65023_dcdc_disable, |
| 427 | .get_voltage = tps65023_dcdc_get_voltage, |
| 428 | .set_voltage = tps65023_dcdc_set_voltage, |
| 429 | .list_voltage = tps65023_dcdc_list_voltage, |
| 430 | }; |
| 431 | |
| 432 | /* Operations permitted on LDOx */ |
| 433 | static struct regulator_ops tps65023_ldo_ops = { |
| 434 | .is_enabled = tps65023_ldo_is_enabled, |
| 435 | .enable = tps65023_ldo_enable, |
| 436 | .disable = tps65023_ldo_disable, |
| 437 | .get_voltage = tps65023_ldo_get_voltage, |
| 438 | .set_voltage = tps65023_ldo_set_voltage, |
| 439 | .list_voltage = tps65023_ldo_list_voltage, |
| 440 | }; |
| 441 | |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 442 | static struct regmap_config tps65023_regmap_config = { |
| 443 | .reg_bits = 8, |
| 444 | .val_bits = 8, |
| 445 | }; |
| 446 | |
Dmitry Torokhov | 54d13ab | 2010-02-23 23:38:06 -0800 | [diff] [blame] | 447 | static int __devinit tps_65023_probe(struct i2c_client *client, |
| 448 | const struct i2c_device_id *id) |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 449 | { |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 450 | const struct tps_driver_data *drv_data = (void *)id->driver_data; |
| 451 | const struct tps_info *info = drv_data->info; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 452 | struct regulator_init_data *init_data; |
| 453 | struct regulator_dev *rdev; |
| 454 | struct tps_pmic *tps; |
| 455 | int i; |
Dmitry Torokhov | 54d13ab | 2010-02-23 23:38:06 -0800 | [diff] [blame] | 456 | int error; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 457 | |
| 458 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 459 | return -EIO; |
| 460 | |
| 461 | /** |
| 462 | * init_data points to array of regulator_init structures |
| 463 | * coming from the board-evm file. |
| 464 | */ |
| 465 | init_data = client->dev.platform_data; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 466 | if (!init_data) |
| 467 | return -EIO; |
| 468 | |
| 469 | tps = kzalloc(sizeof(*tps), GFP_KERNEL); |
| 470 | if (!tps) |
| 471 | return -ENOMEM; |
| 472 | |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 473 | tps->regmap = regmap_init_i2c(client, &tps65023_regmap_config); |
| 474 | if (IS_ERR(tps->regmap)) { |
| 475 | error = PTR_ERR(tps->regmap); |
| 476 | dev_err(&client->dev, "Failed to allocate register map: %d\n", |
| 477 | error); |
| 478 | goto fail_alloc; |
| 479 | } |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 480 | |
| 481 | /* common for all regulators */ |
| 482 | tps->client = client; |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 483 | tps->core_regulator = drv_data->core_regulator; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 484 | |
| 485 | for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) { |
| 486 | /* Store regulator specific information */ |
| 487 | tps->info[i] = info; |
| 488 | |
| 489 | tps->desc[i].name = info->name; |
Axel Lin | 77fa44d | 2011-05-12 13:47:50 +0800 | [diff] [blame] | 490 | tps->desc[i].id = i; |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 491 | tps->desc[i].n_voltages = info->table_len; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 492 | tps->desc[i].ops = (i > TPS65023_DCDC_3 ? |
| 493 | &tps65023_ldo_ops : &tps65023_dcdc_ops); |
| 494 | tps->desc[i].type = REGULATOR_VOLTAGE; |
| 495 | tps->desc[i].owner = THIS_MODULE; |
| 496 | |
| 497 | /* Register the regulators */ |
| 498 | rdev = regulator_register(&tps->desc[i], &client->dev, |
Dmitry Torokhov | 54d13ab | 2010-02-23 23:38:06 -0800 | [diff] [blame] | 499 | init_data, tps); |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 500 | if (IS_ERR(rdev)) { |
| 501 | dev_err(&client->dev, "failed to register %s\n", |
| 502 | id->name); |
Dmitry Torokhov | 54d13ab | 2010-02-23 23:38:06 -0800 | [diff] [blame] | 503 | error = PTR_ERR(rdev); |
| 504 | goto fail; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | /* Save regulator for cleanup */ |
| 508 | tps->rdev[i] = rdev; |
| 509 | } |
| 510 | |
| 511 | i2c_set_clientdata(client, tps); |
| 512 | |
Marcus Folkesson | fc999b8 | 2011-08-04 13:33:49 +0200 | [diff] [blame] | 513 | /* Enable setting output voltage by I2C */ |
| 514 | tps_65023_clear_bits(tps, TPS65023_REG_CON_CTRL2, |
| 515 | TPS65023_REG_CTRL2_CORE_ADJ); |
| 516 | |
Marcus Folkesson | f068ad8 | 2011-08-08 20:29:32 +0200 | [diff] [blame] | 517 | /* Enable setting output voltage by I2C */ |
| 518 | tps_65023_clear_bits(tps, TPS65023_REG_CON_CTRL2, |
| 519 | TPS65023_REG_CTRL2_CORE_ADJ); |
| 520 | |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 521 | return 0; |
Dmitry Torokhov | 54d13ab | 2010-02-23 23:38:06 -0800 | [diff] [blame] | 522 | |
| 523 | fail: |
| 524 | while (--i >= 0) |
| 525 | regulator_unregister(tps->rdev[i]); |
| 526 | |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 527 | regmap_exit(tps->regmap); |
| 528 | fail_alloc: |
Dmitry Torokhov | 54d13ab | 2010-02-23 23:38:06 -0800 | [diff] [blame] | 529 | kfree(tps); |
| 530 | return error; |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | /** |
| 534 | * tps_65023_remove - TPS65023 driver i2c remove handler |
| 535 | * @client: i2c driver client device structure |
| 536 | * |
| 537 | * Unregister TPS driver as an i2c client device driver |
| 538 | */ |
| 539 | static int __devexit tps_65023_remove(struct i2c_client *client) |
| 540 | { |
| 541 | struct tps_pmic *tps = i2c_get_clientdata(client); |
| 542 | int i; |
| 543 | |
| 544 | for (i = 0; i < TPS65023_NUM_REGULATOR; i++) |
| 545 | regulator_unregister(tps->rdev[i]); |
| 546 | |
Mark Brown | 9092335 | 2011-06-18 01:18:51 +0100 | [diff] [blame] | 547 | regmap_exit(tps->regmap); |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 548 | kfree(tps); |
| 549 | |
| 550 | return 0; |
| 551 | } |
| 552 | |
Marcus Folkesson | 437afd2 | 2011-08-08 20:29:35 +0200 | [diff] [blame] | 553 | static const struct tps_info tps65020_regs[] = { |
| 554 | { |
| 555 | .name = "VDCDC1", |
| 556 | .min_uV = 3300000, |
| 557 | .max_uV = 3300000, |
| 558 | .fixed = 1, |
| 559 | }, |
| 560 | { |
| 561 | .name = "VDCDC2", |
| 562 | .min_uV = 1800000, |
| 563 | .max_uV = 1800000, |
| 564 | .fixed = 1, |
| 565 | }, |
| 566 | { |
| 567 | .name = "VDCDC3", |
| 568 | .min_uV = 800000, |
| 569 | .max_uV = 1600000, |
| 570 | .table_len = ARRAY_SIZE(VCORE_VSEL_table), |
| 571 | .table = VCORE_VSEL_table, |
| 572 | }, |
| 573 | |
| 574 | { |
| 575 | .name = "LDO1", |
| 576 | .min_uV = 1000000, |
| 577 | .max_uV = 3150000, |
| 578 | .table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table), |
| 579 | .table = TPS65020_LDO1_VSEL_table, |
| 580 | }, |
| 581 | { |
| 582 | .name = "LDO2", |
| 583 | .min_uV = 1050000, |
| 584 | .max_uV = 3300000, |
| 585 | .table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table), |
| 586 | .table = TPS65020_LDO2_VSEL_table, |
| 587 | }, |
| 588 | }; |
| 589 | |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 590 | static const struct tps_info tps65021_regs[] = { |
| 591 | { |
| 592 | .name = "VDCDC1", |
| 593 | .min_uV = 3300000, |
| 594 | .max_uV = 3300000, |
| 595 | .fixed = 1, |
| 596 | }, |
| 597 | { |
| 598 | .name = "VDCDC2", |
| 599 | .min_uV = 1800000, |
| 600 | .max_uV = 1800000, |
| 601 | .fixed = 1, |
| 602 | }, |
| 603 | { |
| 604 | .name = "VDCDC3", |
| 605 | .min_uV = 800000, |
| 606 | .max_uV = 1600000, |
| 607 | .table_len = ARRAY_SIZE(VCORE_VSEL_table), |
| 608 | .table = VCORE_VSEL_table, |
| 609 | }, |
| 610 | { |
| 611 | .name = "LDO1", |
| 612 | .min_uV = 1000000, |
| 613 | .max_uV = 3150000, |
| 614 | .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table), |
| 615 | .table = TPS65023_LDO1_VSEL_table, |
| 616 | }, |
| 617 | { |
| 618 | .name = "LDO2", |
| 619 | .min_uV = 1050000, |
| 620 | .max_uV = 3300000, |
| 621 | .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table), |
| 622 | .table = TPS65023_LDO2_VSEL_table, |
| 623 | }, |
| 624 | }; |
| 625 | |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 626 | static const struct tps_info tps65023_regs[] = { |
| 627 | { |
| 628 | .name = "VDCDC1", |
| 629 | .min_uV = 800000, |
| 630 | .max_uV = 1600000, |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 631 | .table_len = ARRAY_SIZE(VCORE_VSEL_table), |
| 632 | .table = VCORE_VSEL_table, |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 633 | }, |
| 634 | { |
| 635 | .name = "VDCDC2", |
| 636 | .min_uV = 3300000, |
| 637 | .max_uV = 3300000, |
| 638 | .fixed = 1, |
| 639 | }, |
| 640 | { |
| 641 | .name = "VDCDC3", |
| 642 | .min_uV = 1800000, |
| 643 | .max_uV = 1800000, |
| 644 | .fixed = 1, |
| 645 | }, |
| 646 | { |
| 647 | .name = "LDO1", |
| 648 | .min_uV = 1000000, |
| 649 | .max_uV = 3150000, |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 650 | .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table), |
| 651 | .table = TPS65023_LDO1_VSEL_table, |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 652 | }, |
| 653 | { |
| 654 | .name = "LDO2", |
| 655 | .min_uV = 1050000, |
| 656 | .max_uV = 3300000, |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 657 | .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table), |
| 658 | .table = TPS65023_LDO2_VSEL_table, |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 659 | }, |
| 660 | }; |
| 661 | |
Marcus Folkesson | 437afd2 | 2011-08-08 20:29:35 +0200 | [diff] [blame] | 662 | static struct tps_driver_data tps65020_drv_data = { |
| 663 | .info = tps65020_regs, |
| 664 | .core_regulator = TPS65023_DCDC_3, |
| 665 | }; |
| 666 | |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 667 | static struct tps_driver_data tps65021_drv_data = { |
| 668 | .info = tps65021_regs, |
| 669 | .core_regulator = TPS65023_DCDC_3, |
| 670 | }; |
| 671 | |
| 672 | static struct tps_driver_data tps65023_drv_data = { |
| 673 | .info = tps65023_regs, |
| 674 | .core_regulator = TPS65023_DCDC_1, |
| 675 | }; |
| 676 | |
Liam Girdwood | 9e108d3 | 2009-08-24 10:31:34 +0100 | [diff] [blame] | 677 | static const struct i2c_device_id tps_65023_id[] = { |
| 678 | {.name = "tps65023", |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 679 | .driver_data = (unsigned long) &tps65023_drv_data}, |
Marek Vasut | 1880a2f | 2010-06-24 15:49:49 +0200 | [diff] [blame] | 680 | {.name = "tps65021", |
Marcus Folkesson | 1c3ede0 | 2011-08-08 20:29:34 +0200 | [diff] [blame] | 681 | .driver_data = (unsigned long) &tps65021_drv_data,}, |
Marcus Folkesson | 437afd2 | 2011-08-08 20:29:35 +0200 | [diff] [blame] | 682 | {.name = "tps65020", |
| 683 | .driver_data = (unsigned long) &tps65020_drv_data}, |
Liam Girdwood | 9e108d3 | 2009-08-24 10:31:34 +0100 | [diff] [blame] | 684 | { }, |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 685 | }; |
| 686 | |
| 687 | MODULE_DEVICE_TABLE(i2c, tps_65023_id); |
| 688 | |
| 689 | static struct i2c_driver tps_65023_i2c_driver = { |
| 690 | .driver = { |
| 691 | .name = "tps65023", |
| 692 | .owner = THIS_MODULE, |
| 693 | }, |
| 694 | .probe = tps_65023_probe, |
| 695 | .remove = __devexit_p(tps_65023_remove), |
Liam Girdwood | 9e108d3 | 2009-08-24 10:31:34 +0100 | [diff] [blame] | 696 | .id_table = tps_65023_id, |
Anuj Aggarwal | 30e6599 | 2009-08-21 00:39:31 +0530 | [diff] [blame] | 697 | }; |
| 698 | |
| 699 | /** |
| 700 | * tps_65023_init |
| 701 | * |
| 702 | * Module init function |
| 703 | */ |
| 704 | static int __init tps_65023_init(void) |
| 705 | { |
| 706 | return i2c_add_driver(&tps_65023_i2c_driver); |
| 707 | } |
| 708 | subsys_initcall(tps_65023_init); |
| 709 | |
| 710 | /** |
| 711 | * tps_65023_cleanup |
| 712 | * |
| 713 | * Module exit function |
| 714 | */ |
| 715 | static void __exit tps_65023_cleanup(void) |
| 716 | { |
| 717 | i2c_del_driver(&tps_65023_i2c_driver); |
| 718 | } |
| 719 | module_exit(tps_65023_cleanup); |
| 720 | |
| 721 | MODULE_AUTHOR("Texas Instruments"); |
| 722 | MODULE_DESCRIPTION("TPS65023 voltage regulator driver"); |
Liam Girdwood | 9e108d3 | 2009-08-24 10:31:34 +0100 | [diff] [blame] | 723 | MODULE_LICENSE("GPL v2"); |