Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) ST-Ericsson SA 2010 |
| 3 | * |
| 4 | * License Terms: GNU General Public License v2 |
| 5 | * |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 6 | * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson |
| 7 | * Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 8 | * |
| 9 | * AB8500 peripheral regulators |
| 10 | * |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 11 | * AB8500 supports the following regulators: |
| 12 | * VAUX1/2/3, VINTCORE, VTVOUT, VAUDIO, VAMIC1/2, VDMIC, VANA |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 13 | */ |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/err.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/mfd/ab8500.h> |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 19 | #include <linux/mfd/abx500.h> |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 20 | #include <linux/regulator/driver.h> |
| 21 | #include <linux/regulator/machine.h> |
| 22 | #include <linux/regulator/ab8500.h> |
| 23 | |
| 24 | /** |
| 25 | * struct ab8500_regulator_info - ab8500 regulator information |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 26 | * @dev: device pointer |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 27 | * @desc: regulator description |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 28 | * @regulator_dev: regulator device |
| 29 | * @max_uV: maximum voltage (for variable voltage supplies) |
| 30 | * @min_uV: minimum voltage (for variable voltage supplies) |
| 31 | * @fixed_uV: typical voltage (for fixed voltage supplies) |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 32 | * @update_bank: bank to control on/off |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 33 | * @update_reg: register to control on/off |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 34 | * @update_mask: mask to enable/disable regulator |
| 35 | * @update_val_enable: bits to enable the regulator in normal (high power) mode |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 36 | * @voltage_bank: bank to control regulator voltage |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 37 | * @voltage_reg: register to control regulator voltage |
| 38 | * @voltage_mask: mask to control regulator voltage |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 39 | * @voltages: supported voltage table |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 40 | * @voltages_len: number of supported voltages for the regulator |
| 41 | */ |
| 42 | struct ab8500_regulator_info { |
| 43 | struct device *dev; |
| 44 | struct regulator_desc desc; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 45 | struct regulator_dev *regulator; |
| 46 | int max_uV; |
| 47 | int min_uV; |
| 48 | int fixed_uV; |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 49 | u8 update_bank; |
| 50 | u8 update_reg; |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 51 | u8 update_mask; |
| 52 | u8 update_val_enable; |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 53 | u8 voltage_bank; |
| 54 | u8 voltage_reg; |
| 55 | u8 voltage_mask; |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 56 | int const *voltages; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 57 | int voltages_len; |
| 58 | }; |
| 59 | |
| 60 | /* voltage tables for the vauxn/vintcore supplies */ |
| 61 | static const int ldo_vauxn_voltages[] = { |
| 62 | 1100000, |
| 63 | 1200000, |
| 64 | 1300000, |
| 65 | 1400000, |
| 66 | 1500000, |
| 67 | 1800000, |
| 68 | 1850000, |
| 69 | 1900000, |
| 70 | 2500000, |
| 71 | 2650000, |
| 72 | 2700000, |
| 73 | 2750000, |
| 74 | 2800000, |
| 75 | 2900000, |
| 76 | 3000000, |
| 77 | 3300000, |
| 78 | }; |
| 79 | |
Bengt Jonsson | 2b75151 | 2010-12-10 11:08:43 +0100 | [diff] [blame] | 80 | static const int ldo_vaux3_voltages[] = { |
| 81 | 1200000, |
| 82 | 1500000, |
| 83 | 1800000, |
| 84 | 2100000, |
| 85 | 2500000, |
| 86 | 2750000, |
| 87 | 2790000, |
| 88 | 2910000, |
| 89 | }; |
| 90 | |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 91 | static const int ldo_vintcore_voltages[] = { |
| 92 | 1200000, |
| 93 | 1225000, |
| 94 | 1250000, |
| 95 | 1275000, |
| 96 | 1300000, |
| 97 | 1325000, |
| 98 | 1350000, |
| 99 | }; |
| 100 | |
| 101 | static int ab8500_regulator_enable(struct regulator_dev *rdev) |
| 102 | { |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 103 | int ret; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 104 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| 105 | |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 106 | if (info == NULL) { |
| 107 | dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 108 | return -EINVAL; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 109 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 110 | |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 111 | ret = abx500_mask_and_set_register_interruptible(info->dev, |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 112 | info->update_bank, info->update_reg, |
| 113 | info->update_mask, info->update_val_enable); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 114 | if (ret < 0) |
| 115 | dev_err(rdev_get_dev(rdev), |
| 116 | "couldn't set enable bits for regulator\n"); |
| 117 | return ret; |
| 118 | } |
| 119 | |
| 120 | static int ab8500_regulator_disable(struct regulator_dev *rdev) |
| 121 | { |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 122 | int ret; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 123 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| 124 | |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 125 | if (info == NULL) { |
| 126 | dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 127 | return -EINVAL; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 128 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 129 | |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 130 | ret = abx500_mask_and_set_register_interruptible(info->dev, |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 131 | info->update_bank, info->update_reg, |
| 132 | info->update_mask, 0x0); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 133 | if (ret < 0) |
| 134 | dev_err(rdev_get_dev(rdev), |
| 135 | "couldn't set disable bits for regulator\n"); |
| 136 | return ret; |
| 137 | } |
| 138 | |
| 139 | static int ab8500_regulator_is_enabled(struct regulator_dev *rdev) |
| 140 | { |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 141 | int ret; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 142 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 143 | u8 value; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 144 | |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 145 | if (info == NULL) { |
| 146 | dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 147 | return -EINVAL; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 148 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 149 | |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 150 | ret = abx500_get_register_interruptible(info->dev, |
| 151 | info->update_bank, info->update_reg, &value); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 152 | if (ret < 0) { |
| 153 | dev_err(rdev_get_dev(rdev), |
| 154 | "couldn't read 0x%x register\n", info->update_reg); |
| 155 | return ret; |
| 156 | } |
| 157 | |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 158 | if (value & info->update_mask) |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 159 | return true; |
| 160 | else |
| 161 | return false; |
| 162 | } |
| 163 | |
| 164 | static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector) |
| 165 | { |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 166 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| 167 | |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 168 | if (info == NULL) { |
| 169 | dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 170 | return -EINVAL; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 171 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 172 | |
| 173 | /* return the uV for the fixed regulators */ |
| 174 | if (info->fixed_uV) |
| 175 | return info->fixed_uV; |
| 176 | |
Axel Lin | 49990e6 | 2010-09-04 23:06:41 +0800 | [diff] [blame] | 177 | if (selector >= info->voltages_len) |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 178 | return -EINVAL; |
| 179 | |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 180 | return info->voltages[selector]; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | static int ab8500_regulator_get_voltage(struct regulator_dev *rdev) |
| 184 | { |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 185 | int ret; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 186 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 187 | u8 value; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 188 | |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 189 | if (info == NULL) { |
| 190 | dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 191 | return -EINVAL; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 192 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 193 | |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 194 | ret = abx500_get_register_interruptible(info->dev, info->voltage_bank, |
| 195 | info->voltage_reg, &value); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 196 | if (ret < 0) { |
| 197 | dev_err(rdev_get_dev(rdev), |
| 198 | "couldn't read voltage reg for regulator\n"); |
| 199 | return ret; |
| 200 | } |
| 201 | |
| 202 | /* vintcore has a different layout */ |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 203 | value &= info->voltage_mask; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 204 | if (info->desc.id == AB8500_LDO_INTCORE) |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 205 | ret = info->voltages[value >> 0x3]; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 206 | else |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 207 | ret = info->voltages[value]; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 208 | |
| 209 | return ret; |
| 210 | } |
| 211 | |
| 212 | static int ab8500_get_best_voltage_index(struct regulator_dev *rdev, |
| 213 | int min_uV, int max_uV) |
| 214 | { |
| 215 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| 216 | int i; |
| 217 | |
| 218 | /* check the supported voltage */ |
| 219 | for (i = 0; i < info->voltages_len; i++) { |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 220 | if ((info->voltages[i] >= min_uV) && |
| 221 | (info->voltages[i] <= max_uV)) |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 222 | return i; |
| 223 | } |
| 224 | |
| 225 | return -EINVAL; |
| 226 | } |
| 227 | |
| 228 | static int ab8500_regulator_set_voltage(struct regulator_dev *rdev, |
Mark Brown | 3a93f2a | 2010-11-10 14:38:29 +0000 | [diff] [blame] | 229 | int min_uV, int max_uV, |
| 230 | unsigned *selector) |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 231 | { |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 232 | int ret; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 233 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| 234 | |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 235 | if (info == NULL) { |
| 236 | dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 237 | return -EINVAL; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 238 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 239 | |
| 240 | /* get the appropriate voltages within the range */ |
| 241 | ret = ab8500_get_best_voltage_index(rdev, min_uV, max_uV); |
| 242 | if (ret < 0) { |
| 243 | dev_err(rdev_get_dev(rdev), |
| 244 | "couldn't get best voltage for regulator\n"); |
| 245 | return ret; |
| 246 | } |
| 247 | |
Mark Brown | 3a93f2a | 2010-11-10 14:38:29 +0000 | [diff] [blame] | 248 | *selector = ret; |
| 249 | |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 250 | /* set the registers for the request */ |
Mattias Wallin | 47c1697 | 2010-09-10 17:47:56 +0200 | [diff] [blame] | 251 | ret = abx500_mask_and_set_register_interruptible(info->dev, |
| 252 | info->voltage_bank, info->voltage_reg, |
| 253 | info->voltage_mask, (u8)ret); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 254 | if (ret < 0) |
| 255 | dev_err(rdev_get_dev(rdev), |
| 256 | "couldn't set voltage reg for regulator\n"); |
| 257 | |
| 258 | return ret; |
| 259 | } |
| 260 | |
| 261 | static struct regulator_ops ab8500_regulator_ops = { |
| 262 | .enable = ab8500_regulator_enable, |
| 263 | .disable = ab8500_regulator_disable, |
| 264 | .is_enabled = ab8500_regulator_is_enabled, |
| 265 | .get_voltage = ab8500_regulator_get_voltage, |
| 266 | .set_voltage = ab8500_regulator_set_voltage, |
| 267 | .list_voltage = ab8500_list_voltage, |
| 268 | }; |
| 269 | |
| 270 | static int ab8500_fixed_get_voltage(struct regulator_dev *rdev) |
| 271 | { |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 272 | struct ab8500_regulator_info *info = rdev_get_drvdata(rdev); |
| 273 | |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 274 | if (info == NULL) { |
| 275 | dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 276 | return -EINVAL; |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 277 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 278 | |
| 279 | return info->fixed_uV; |
| 280 | } |
| 281 | |
| 282 | static struct regulator_ops ab8500_ldo_fixed_ops = { |
| 283 | .enable = ab8500_regulator_enable, |
| 284 | .disable = ab8500_regulator_disable, |
| 285 | .is_enabled = ab8500_regulator_is_enabled, |
| 286 | .get_voltage = ab8500_fixed_get_voltage, |
| 287 | .list_voltage = ab8500_list_voltage, |
| 288 | }; |
| 289 | |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 290 | #define AB8500_LDO(_id, _min_mV, _max_mV, \ |
| 291 | _u_bank, _u_reg, _u_mask, _u_val_enable, \ |
| 292 | _v_bank, _v_reg, _v_mask, _v_table, _v_table_len) \ |
| 293 | [AB8500_LDO_##_id] = { \ |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 294 | .desc = { \ |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 295 | .name = "LDO-" #_id, \ |
| 296 | .ops = &ab8500_regulator_ops, \ |
| 297 | .type = REGULATOR_VOLTAGE, \ |
| 298 | .id = AB8500_LDO_##_id, \ |
| 299 | .owner = THIS_MODULE, \ |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 300 | }, \ |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 301 | .min_uV = (_min_mV) * 1000, \ |
| 302 | .max_uV = (_max_mV) * 1000, \ |
| 303 | .update_bank = _u_bank, \ |
| 304 | .update_reg = _u_reg, \ |
| 305 | .update_mask = _u_mask, \ |
| 306 | .update_val_enable = _u_val_enable, \ |
| 307 | .voltage_bank = _v_bank, \ |
| 308 | .voltage_reg = _v_reg, \ |
| 309 | .voltage_mask = _v_mask, \ |
| 310 | .voltages = _v_table, \ |
| 311 | .voltages_len = _v_table_len, \ |
| 312 | .fixed_uV = 0, \ |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 313 | } |
| 314 | |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 315 | #define AB8500_FIXED_LDO(_id, _fixed_mV, \ |
| 316 | _u_bank, _u_reg, _u_mask, _u_val_enable) \ |
| 317 | [AB8500_LDO_##_id] = { \ |
| 318 | .desc = { \ |
| 319 | .name = "LDO-" #_id, \ |
| 320 | .ops = &ab8500_ldo_fixed_ops, \ |
| 321 | .type = REGULATOR_VOLTAGE, \ |
| 322 | .id = AB8500_LDO_##_id, \ |
| 323 | .owner = THIS_MODULE, \ |
| 324 | }, \ |
| 325 | .fixed_uV = (_fixed_mV) * 1000, \ |
| 326 | .update_bank = _u_bank, \ |
| 327 | .update_reg = _u_reg, \ |
| 328 | .update_mask = _u_mask, \ |
| 329 | .update_val_enable = _u_val_enable, \ |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | static struct ab8500_regulator_info ab8500_regulator_info[] = { |
| 333 | /* |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 334 | * Variable Voltage Regulators |
| 335 | * name, min mV, max mV, |
| 336 | * update bank, reg, mask, enable val |
| 337 | * volt bank, reg, mask, table, table length |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 338 | */ |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 339 | AB8500_LDO(AUX1, 1100, 3300, |
| 340 | 0x04, 0x09, 0x03, 0x01, 0x04, 0x1f, 0x0f, |
| 341 | ldo_vauxn_voltages, ARRAY_SIZE(ldo_vauxn_voltages)), |
| 342 | AB8500_LDO(AUX2, 1100, 3300, |
| 343 | 0x04, 0x09, 0x0c, 0x04, 0x04, 0x20, 0x0f, |
| 344 | ldo_vauxn_voltages, ARRAY_SIZE(ldo_vauxn_voltages)), |
| 345 | AB8500_LDO(AUX3, 1100, 3300, |
| 346 | 0x04, 0x0a, 0x03, 0x01, 0x04, 0x21, 0x07, |
| 347 | ldo_vaux3_voltages, ARRAY_SIZE(ldo_vaux3_voltages)), |
| 348 | AB8500_LDO(INTCORE, 1100, 3300, |
| 349 | 0x03, 0x80, 0x44, 0x04, 0x03, 0x80, 0x38, |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 350 | ldo_vintcore_voltages, ARRAY_SIZE(ldo_vintcore_voltages)), |
| 351 | |
| 352 | /* |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 353 | * Fixed Voltage Regulators |
| 354 | * name, fixed mV, |
| 355 | * update bank, reg, mask, enable val |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 356 | */ |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 357 | AB8500_FIXED_LDO(TVOUT, 2000, 0x03, 0x80, 0x82, 0x02), |
| 358 | AB8500_FIXED_LDO(AUDIO, 2000, 0x03, 0x83, 0x02, 0x02), |
| 359 | AB8500_FIXED_LDO(ANAMIC1, 2050, 0x03, 0x83, 0x08, 0x08), |
| 360 | AB8500_FIXED_LDO(ANAMIC2, 2050, 0x03, 0x83, 0x10, 0x10), |
| 361 | AB8500_FIXED_LDO(DMIC, 1800, 0x03, 0x83, 0x04, 0x04), |
| 362 | AB8500_FIXED_LDO(ANA, 1200, 0x04, 0x06, 0x0c, 0x04), |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 363 | }; |
| 364 | |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 365 | static __devinit int ab8500_regulator_probe(struct platform_device *pdev) |
| 366 | { |
| 367 | struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent); |
Dan Carpenter | af54dec | 2010-08-14 11:03:16 +0200 | [diff] [blame] | 368 | struct ab8500_platform_data *pdata; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 369 | int i, err; |
| 370 | |
| 371 | if (!ab8500) { |
| 372 | dev_err(&pdev->dev, "null mfd parent\n"); |
| 373 | return -EINVAL; |
| 374 | } |
Dan Carpenter | af54dec | 2010-08-14 11:03:16 +0200 | [diff] [blame] | 375 | pdata = dev_get_platdata(ab8500->dev); |
Bengt Jonsson | fc24b42 | 2010-12-10 11:08:45 +0100 | [diff] [blame^] | 376 | if (!pdata) { |
| 377 | dev_err(&pdev->dev, "null pdata\n"); |
| 378 | return -EINVAL; |
| 379 | } |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 380 | |
Bengt Jonsson | cb189b0 | 2010-12-10 11:08:40 +0100 | [diff] [blame] | 381 | /* make sure the platform data has the correct size */ |
| 382 | if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) { |
| 383 | dev_err(&pdev->dev, "platform configuration error\n"); |
| 384 | return -EINVAL; |
| 385 | } |
| 386 | |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 387 | /* register all regulators */ |
| 388 | for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) { |
| 389 | struct ab8500_regulator_info *info = NULL; |
| 390 | |
| 391 | /* assign per-regulator data */ |
| 392 | info = &ab8500_regulator_info[i]; |
| 393 | info->dev = &pdev->dev; |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 394 | |
Bengt Jonsson | 2b75151 | 2010-12-10 11:08:43 +0100 | [diff] [blame] | 395 | /* fix for hardware before ab8500v2.0 */ |
| 396 | if (abx500_get_chip_id(info->dev) < 0x20) { |
| 397 | if (info->desc.id == AB8500_LDO_AUX3) { |
| 398 | info->desc.n_voltages = |
| 399 | ARRAY_SIZE(ldo_vauxn_voltages); |
Bengt Jonsson | e1159e6 | 2010-12-10 11:08:44 +0100 | [diff] [blame] | 400 | info->voltages = ldo_vauxn_voltages; |
Bengt Jonsson | 2b75151 | 2010-12-10 11:08:43 +0100 | [diff] [blame] | 401 | info->voltages_len = |
| 402 | ARRAY_SIZE(ldo_vauxn_voltages); |
| 403 | info->voltage_mask = 0xf; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | /* register regulator with framework */ |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 408 | info->regulator = regulator_register(&info->desc, &pdev->dev, |
Bengt Jonsson | cb189b0 | 2010-12-10 11:08:40 +0100 | [diff] [blame] | 409 | &pdata->regulator[i], info); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 410 | if (IS_ERR(info->regulator)) { |
| 411 | err = PTR_ERR(info->regulator); |
| 412 | dev_err(&pdev->dev, "failed to register regulator %s\n", |
| 413 | info->desc.name); |
| 414 | /* when we fail, un-register all earlier regulators */ |
Axel Lin | d4876a3 | 2010-08-14 21:44:04 +0800 | [diff] [blame] | 415 | while (--i >= 0) { |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 416 | info = &ab8500_regulator_info[i]; |
| 417 | regulator_unregister(info->regulator); |
Sundar R IYER | c789ca2 | 2010-07-13 21:48:56 +0530 | [diff] [blame] | 418 | } |
| 419 | return err; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | static __devexit int ab8500_regulator_remove(struct platform_device *pdev) |
| 427 | { |
| 428 | int i; |
| 429 | |
| 430 | for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) { |
| 431 | struct ab8500_regulator_info *info = NULL; |
| 432 | info = &ab8500_regulator_info[i]; |
| 433 | regulator_unregister(info->regulator); |
| 434 | } |
| 435 | |
| 436 | return 0; |
| 437 | } |
| 438 | |
| 439 | static struct platform_driver ab8500_regulator_driver = { |
| 440 | .probe = ab8500_regulator_probe, |
| 441 | .remove = __devexit_p(ab8500_regulator_remove), |
| 442 | .driver = { |
| 443 | .name = "ab8500-regulator", |
| 444 | .owner = THIS_MODULE, |
| 445 | }, |
| 446 | }; |
| 447 | |
| 448 | static int __init ab8500_regulator_init(void) |
| 449 | { |
| 450 | int ret; |
| 451 | |
| 452 | ret = platform_driver_register(&ab8500_regulator_driver); |
| 453 | if (ret != 0) |
| 454 | pr_err("Failed to register ab8500 regulator: %d\n", ret); |
| 455 | |
| 456 | return ret; |
| 457 | } |
| 458 | subsys_initcall(ab8500_regulator_init); |
| 459 | |
| 460 | static void __exit ab8500_regulator_exit(void) |
| 461 | { |
| 462 | platform_driver_unregister(&ab8500_regulator_driver); |
| 463 | } |
| 464 | module_exit(ab8500_regulator_exit); |
| 465 | |
| 466 | MODULE_LICENSE("GPL v2"); |
| 467 | MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>"); |
| 468 | MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC"); |
| 469 | MODULE_ALIAS("platform:ab8500-regulator"); |