James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 1 | /* |
| 2 | * pv88080-regulator.c - Regulator device driver for PV88080 |
| 3 | * Copyright (C) 2016 Powerventure Semiconductor Ltd. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License |
| 7 | * as published by the Free Software Foundation; either version 2 |
| 8 | * of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/err.h> |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 17 | #include <linux/i2c.h> |
| 18 | #include <linux/module.h> |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 19 | #include <linux/of.h> |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 20 | #include <linux/init.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/regulator/driver.h> |
| 23 | #include <linux/regulator/machine.h> |
| 24 | #include <linux/regmap.h> |
| 25 | #include <linux/irq.h> |
| 26 | #include <linux/interrupt.h> |
| 27 | #include <linux/regulator/of_regulator.h> |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 28 | #include "pv88080-regulator.h" |
| 29 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 30 | #define PV88080_MAX_REGULATORS 4 |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 31 | |
| 32 | /* PV88080 REGULATOR IDs */ |
| 33 | enum { |
| 34 | /* BUCKs */ |
| 35 | PV88080_ID_BUCK1, |
| 36 | PV88080_ID_BUCK2, |
| 37 | PV88080_ID_BUCK3, |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 38 | PV88080_ID_HVBUCK, |
| 39 | }; |
| 40 | |
| 41 | enum pv88080_types { |
| 42 | TYPE_PV88080_AA, |
| 43 | TYPE_PV88080_BA, |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 44 | }; |
| 45 | |
| 46 | struct pv88080_regulator { |
| 47 | struct regulator_desc desc; |
| 48 | /* Current limiting */ |
| 49 | unsigned int n_current_limits; |
| 50 | const int *current_limits; |
| 51 | unsigned int limit_mask; |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 52 | unsigned int mode_reg; |
| 53 | unsigned int limit_reg; |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 54 | unsigned int conf2; |
| 55 | unsigned int conf5; |
| 56 | }; |
| 57 | |
| 58 | struct pv88080 { |
| 59 | struct device *dev; |
| 60 | struct regmap *regmap; |
| 61 | struct regulator_dev *rdev[PV88080_MAX_REGULATORS]; |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 62 | unsigned long type; |
| 63 | const struct pv88080_compatible_regmap *regmap_config; |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 64 | }; |
| 65 | |
| 66 | struct pv88080_buck_voltage { |
| 67 | int min_uV; |
| 68 | int max_uV; |
| 69 | int uV_step; |
| 70 | }; |
| 71 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 72 | struct pv88080_buck_regmap { |
| 73 | /* REGS */ |
| 74 | int buck_enable_reg; |
| 75 | int buck_vsel_reg; |
| 76 | int buck_mode_reg; |
| 77 | int buck_limit_reg; |
| 78 | int buck_vdac_range_reg; |
| 79 | int buck_vrange_gain_reg; |
| 80 | /* MASKS */ |
| 81 | int buck_enable_mask; |
| 82 | int buck_vsel_mask; |
| 83 | int buck_limit_mask; |
| 84 | }; |
| 85 | |
| 86 | struct pv88080_compatible_regmap { |
| 87 | /* BUCK1, 2, 3 */ |
| 88 | struct pv88080_buck_regmap buck_regmap[PV88080_MAX_REGULATORS-1]; |
| 89 | /* HVBUCK */ |
| 90 | int hvbuck_enable_reg; |
| 91 | int hvbuck_vsel_reg; |
| 92 | int hvbuck_enable_mask; |
| 93 | int hvbuck_vsel_mask; |
| 94 | }; |
| 95 | |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 96 | static const struct regmap_config pv88080_regmap_config = { |
| 97 | .reg_bits = 8, |
| 98 | .val_bits = 8, |
| 99 | }; |
| 100 | |
| 101 | /* Current limits array (in uA) for BUCK1, BUCK2, BUCK3. |
| 102 | * Entry indexes corresponds to register values. |
| 103 | */ |
| 104 | |
| 105 | static const int pv88080_buck1_limits[] = { |
| 106 | 3230000, 5130000, 6960000, 8790000 |
| 107 | }; |
| 108 | |
| 109 | static const int pv88080_buck23_limits[] = { |
| 110 | 1496000, 2393000, 3291000, 4189000 |
| 111 | }; |
| 112 | |
| 113 | static const struct pv88080_buck_voltage pv88080_buck_vol[2] = { |
| 114 | { |
| 115 | .min_uV = 600000, |
| 116 | .max_uV = 1393750, |
| 117 | .uV_step = 6250, |
| 118 | }, |
| 119 | { |
| 120 | .min_uV = 1400000, |
| 121 | .max_uV = 2193750, |
| 122 | .uV_step = 6250, |
| 123 | }, |
| 124 | }; |
| 125 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 126 | static const struct pv88080_compatible_regmap pv88080_aa_regs = { |
| 127 | /* BUCK1 */ |
| 128 | .buck_regmap[0] = { |
| 129 | .buck_enable_reg = PV88080AA_REG_BUCK1_CONF0, |
| 130 | .buck_vsel_reg = PV88080AA_REG_BUCK1_CONF0, |
| 131 | .buck_mode_reg = PV88080AA_REG_BUCK1_CONF1, |
| 132 | .buck_limit_reg = PV88080AA_REG_BUCK1_CONF1, |
| 133 | .buck_vdac_range_reg = PV88080AA_REG_BUCK1_CONF2, |
| 134 | .buck_vrange_gain_reg = PV88080AA_REG_BUCK1_CONF5, |
| 135 | .buck_enable_mask = PV88080_BUCK1_EN, |
| 136 | .buck_vsel_mask = PV88080_VBUCK1_MASK, |
| 137 | .buck_limit_mask = PV88080_BUCK1_ILIM_MASK, |
| 138 | }, |
| 139 | /* BUCK2 */ |
| 140 | .buck_regmap[1] = { |
| 141 | .buck_enable_reg = PV88080AA_REG_BUCK2_CONF0, |
| 142 | .buck_vsel_reg = PV88080AA_REG_BUCK2_CONF0, |
| 143 | .buck_mode_reg = PV88080AA_REG_BUCK2_CONF1, |
| 144 | .buck_limit_reg = PV88080AA_REG_BUCK2_CONF1, |
| 145 | .buck_vdac_range_reg = PV88080AA_REG_BUCK2_CONF2, |
| 146 | .buck_vrange_gain_reg = PV88080AA_REG_BUCK2_CONF5, |
| 147 | .buck_enable_mask = PV88080_BUCK2_EN, |
| 148 | .buck_vsel_mask = PV88080_VBUCK2_MASK, |
| 149 | .buck_limit_mask = PV88080_BUCK2_ILIM_MASK, |
| 150 | }, |
| 151 | /* BUCK3 */ |
| 152 | .buck_regmap[2] = { |
| 153 | .buck_enable_reg = PV88080AA_REG_BUCK3_CONF0, |
| 154 | .buck_vsel_reg = PV88080AA_REG_BUCK3_CONF0, |
| 155 | .buck_mode_reg = PV88080AA_REG_BUCK3_CONF1, |
| 156 | .buck_limit_reg = PV88080AA_REG_BUCK3_CONF1, |
| 157 | .buck_vdac_range_reg = PV88080AA_REG_BUCK3_CONF2, |
| 158 | .buck_vrange_gain_reg = PV88080AA_REG_BUCK3_CONF5, |
| 159 | .buck_enable_mask = PV88080_BUCK3_EN, |
| 160 | .buck_vsel_mask = PV88080_VBUCK3_MASK, |
| 161 | .buck_limit_mask = PV88080_BUCK3_ILIM_MASK, |
| 162 | }, |
| 163 | /* HVBUCK */ |
| 164 | .hvbuck_enable_reg = PV88080AA_REG_HVBUCK_CONF2, |
| 165 | .hvbuck_vsel_reg = PV88080AA_REG_HVBUCK_CONF1, |
| 166 | .hvbuck_enable_mask = PV88080_HVBUCK_EN, |
| 167 | .hvbuck_vsel_mask = PV88080_VHVBUCK_MASK, |
| 168 | }; |
| 169 | |
| 170 | static const struct pv88080_compatible_regmap pv88080_ba_regs = { |
| 171 | /* BUCK1 */ |
| 172 | .buck_regmap[0] = { |
| 173 | .buck_enable_reg = PV88080BA_REG_BUCK1_CONF0, |
| 174 | .buck_vsel_reg = PV88080BA_REG_BUCK1_CONF0, |
| 175 | .buck_mode_reg = PV88080BA_REG_BUCK1_CONF1, |
| 176 | .buck_limit_reg = PV88080BA_REG_BUCK1_CONF1, |
| 177 | .buck_vdac_range_reg = PV88080BA_REG_BUCK1_CONF2, |
| 178 | .buck_vrange_gain_reg = PV88080BA_REG_BUCK1_CONF5, |
| 179 | .buck_enable_mask = PV88080_BUCK1_EN, |
| 180 | .buck_vsel_mask = PV88080_VBUCK1_MASK, |
| 181 | .buck_limit_mask = PV88080_BUCK1_ILIM_MASK, |
| 182 | }, |
| 183 | /* BUCK2 */ |
| 184 | .buck_regmap[1] = { |
| 185 | .buck_enable_reg = PV88080BA_REG_BUCK2_CONF0, |
| 186 | .buck_vsel_reg = PV88080BA_REG_BUCK2_CONF0, |
| 187 | .buck_mode_reg = PV88080BA_REG_BUCK2_CONF1, |
| 188 | .buck_limit_reg = PV88080BA_REG_BUCK2_CONF1, |
| 189 | .buck_vdac_range_reg = PV88080BA_REG_BUCK2_CONF2, |
| 190 | .buck_vrange_gain_reg = PV88080BA_REG_BUCK2_CONF5, |
| 191 | .buck_enable_mask = PV88080_BUCK2_EN, |
| 192 | .buck_vsel_mask = PV88080_VBUCK2_MASK, |
| 193 | .buck_limit_mask = PV88080_BUCK2_ILIM_MASK, |
| 194 | }, |
| 195 | /* BUCK3 */ |
| 196 | .buck_regmap[2] = { |
| 197 | .buck_enable_reg = PV88080BA_REG_BUCK3_CONF0, |
| 198 | .buck_vsel_reg = PV88080BA_REG_BUCK3_CONF0, |
| 199 | .buck_mode_reg = PV88080BA_REG_BUCK3_CONF1, |
| 200 | .buck_limit_reg = PV88080BA_REG_BUCK3_CONF1, |
| 201 | .buck_vdac_range_reg = PV88080BA_REG_BUCK3_CONF2, |
| 202 | .buck_vrange_gain_reg = PV88080BA_REG_BUCK3_CONF5, |
| 203 | .buck_enable_mask = PV88080_BUCK3_EN, |
| 204 | .buck_vsel_mask = PV88080_VBUCK3_MASK, |
| 205 | .buck_limit_mask = PV88080_BUCK3_ILIM_MASK, |
| 206 | }, |
| 207 | /* HVBUCK */ |
| 208 | .hvbuck_enable_reg = PV88080BA_REG_HVBUCK_CONF2, |
| 209 | .hvbuck_vsel_reg = PV88080BA_REG_HVBUCK_CONF1, |
| 210 | .hvbuck_enable_mask = PV88080_HVBUCK_EN, |
| 211 | .hvbuck_vsel_mask = PV88080_VHVBUCK_MASK, |
| 212 | }; |
| 213 | |
| 214 | #ifdef CONFIG_OF |
| 215 | static const struct of_device_id pv88080_dt_ids[] = { |
| 216 | { .compatible = "pvs,pv88080", .data = (void *)TYPE_PV88080_AA }, |
| 217 | { .compatible = "pvs,pv88080-aa", .data = (void *)TYPE_PV88080_AA }, |
| 218 | { .compatible = "pvs,pv88080-ba", .data = (void *)TYPE_PV88080_BA }, |
| 219 | {}, |
| 220 | }; |
| 221 | MODULE_DEVICE_TABLE(of, pv88080_dt_ids); |
| 222 | #endif |
| 223 | |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 224 | static unsigned int pv88080_buck_get_mode(struct regulator_dev *rdev) |
| 225 | { |
| 226 | struct pv88080_regulator *info = rdev_get_drvdata(rdev); |
| 227 | unsigned int data; |
| 228 | int ret, mode = 0; |
| 229 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 230 | ret = regmap_read(rdev->regmap, info->mode_reg, &data); |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 231 | if (ret < 0) |
| 232 | return ret; |
| 233 | |
| 234 | switch (data & PV88080_BUCK1_MODE_MASK) { |
| 235 | case PV88080_BUCK_MODE_SYNC: |
| 236 | mode = REGULATOR_MODE_FAST; |
| 237 | break; |
| 238 | case PV88080_BUCK_MODE_AUTO: |
| 239 | mode = REGULATOR_MODE_NORMAL; |
| 240 | break; |
| 241 | case PV88080_BUCK_MODE_SLEEP: |
| 242 | mode = REGULATOR_MODE_STANDBY; |
| 243 | break; |
| 244 | default: |
| 245 | return -EINVAL; |
| 246 | } |
| 247 | |
| 248 | return mode; |
| 249 | } |
| 250 | |
| 251 | static int pv88080_buck_set_mode(struct regulator_dev *rdev, |
| 252 | unsigned int mode) |
| 253 | { |
| 254 | struct pv88080_regulator *info = rdev_get_drvdata(rdev); |
| 255 | int val = 0; |
| 256 | |
| 257 | switch (mode) { |
| 258 | case REGULATOR_MODE_FAST: |
| 259 | val = PV88080_BUCK_MODE_SYNC; |
| 260 | break; |
| 261 | case REGULATOR_MODE_NORMAL: |
| 262 | val = PV88080_BUCK_MODE_AUTO; |
| 263 | break; |
| 264 | case REGULATOR_MODE_STANDBY: |
| 265 | val = PV88080_BUCK_MODE_SLEEP; |
| 266 | break; |
| 267 | default: |
| 268 | return -EINVAL; |
| 269 | } |
| 270 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 271 | return regmap_update_bits(rdev->regmap, info->mode_reg, |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 272 | PV88080_BUCK1_MODE_MASK, val); |
| 273 | } |
| 274 | |
| 275 | static int pv88080_set_current_limit(struct regulator_dev *rdev, int min, |
| 276 | int max) |
| 277 | { |
| 278 | struct pv88080_regulator *info = rdev_get_drvdata(rdev); |
| 279 | int i; |
| 280 | |
| 281 | /* search for closest to maximum */ |
| 282 | for (i = info->n_current_limits; i >= 0; i--) { |
| 283 | if (min <= info->current_limits[i] |
| 284 | && max >= info->current_limits[i]) { |
| 285 | return regmap_update_bits(rdev->regmap, |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 286 | info->limit_reg, |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 287 | info->limit_mask, |
| 288 | i << PV88080_BUCK1_ILIM_SHIFT); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | return -EINVAL; |
| 293 | } |
| 294 | |
| 295 | static int pv88080_get_current_limit(struct regulator_dev *rdev) |
| 296 | { |
| 297 | struct pv88080_regulator *info = rdev_get_drvdata(rdev); |
| 298 | unsigned int data; |
| 299 | int ret; |
| 300 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 301 | ret = regmap_read(rdev->regmap, info->limit_reg, &data); |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 302 | if (ret < 0) |
| 303 | return ret; |
| 304 | |
| 305 | data = (data & info->limit_mask) >> PV88080_BUCK1_ILIM_SHIFT; |
| 306 | return info->current_limits[data]; |
| 307 | } |
| 308 | |
Bhumika Goyal | d4fdf5e | 2017-01-28 20:44:01 +0530 | [diff] [blame] | 309 | static const struct regulator_ops pv88080_buck_ops = { |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 310 | .get_mode = pv88080_buck_get_mode, |
| 311 | .set_mode = pv88080_buck_set_mode, |
| 312 | .enable = regulator_enable_regmap, |
| 313 | .disable = regulator_disable_regmap, |
| 314 | .is_enabled = regulator_is_enabled_regmap, |
| 315 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 316 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 317 | .list_voltage = regulator_list_voltage_linear, |
| 318 | .set_current_limit = pv88080_set_current_limit, |
| 319 | .get_current_limit = pv88080_get_current_limit, |
| 320 | }; |
| 321 | |
Bhumika Goyal | d4fdf5e | 2017-01-28 20:44:01 +0530 | [diff] [blame] | 322 | static const struct regulator_ops pv88080_hvbuck_ops = { |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 323 | .enable = regulator_enable_regmap, |
| 324 | .disable = regulator_disable_regmap, |
| 325 | .is_enabled = regulator_is_enabled_regmap, |
| 326 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 327 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 328 | .list_voltage = regulator_list_voltage_linear, |
| 329 | }; |
| 330 | |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 331 | #define PV88080_BUCK(chip, regl_name, min, step, max, limits_array) \ |
| 332 | {\ |
| 333 | .desc = {\ |
| 334 | .id = chip##_ID_##regl_name,\ |
| 335 | .name = __stringify(chip##_##regl_name),\ |
| 336 | .of_match = of_match_ptr(#regl_name),\ |
| 337 | .regulators_node = of_match_ptr("regulators"),\ |
| 338 | .type = REGULATOR_VOLTAGE,\ |
| 339 | .owner = THIS_MODULE,\ |
| 340 | .ops = &pv88080_buck_ops,\ |
| 341 | .min_uV = min, \ |
| 342 | .uV_step = step, \ |
| 343 | .n_voltages = ((max) - (min))/(step) + 1, \ |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 344 | },\ |
| 345 | .current_limits = limits_array, \ |
| 346 | .n_current_limits = ARRAY_SIZE(limits_array), \ |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | #define PV88080_HVBUCK(chip, regl_name, min, step, max) \ |
| 350 | {\ |
| 351 | .desc = {\ |
| 352 | .id = chip##_ID_##regl_name,\ |
| 353 | .name = __stringify(chip##_##regl_name),\ |
| 354 | .of_match = of_match_ptr(#regl_name),\ |
| 355 | .regulators_node = of_match_ptr("regulators"),\ |
| 356 | .type = REGULATOR_VOLTAGE,\ |
| 357 | .owner = THIS_MODULE,\ |
| 358 | .ops = &pv88080_hvbuck_ops,\ |
| 359 | .min_uV = min, \ |
| 360 | .uV_step = step, \ |
| 361 | .n_voltages = ((max) - (min))/(step) + 1, \ |
| 362 | },\ |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | static struct pv88080_regulator pv88080_regulator_info[] = { |
| 366 | PV88080_BUCK(PV88080, BUCK1, 600000, 6250, 1393750, |
| 367 | pv88080_buck1_limits), |
| 368 | PV88080_BUCK(PV88080, BUCK2, 600000, 6250, 1393750, |
| 369 | pv88080_buck23_limits), |
| 370 | PV88080_BUCK(PV88080, BUCK3, 600000, 6250, 1393750, |
| 371 | pv88080_buck23_limits), |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 372 | PV88080_HVBUCK(PV88080, HVBUCK, 0, 5000, 1275000), |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 373 | }; |
| 374 | |
| 375 | static irqreturn_t pv88080_irq_handler(int irq, void *data) |
| 376 | { |
| 377 | struct pv88080 *chip = data; |
| 378 | int i, reg_val, err, ret = IRQ_NONE; |
| 379 | |
| 380 | err = regmap_read(chip->regmap, PV88080_REG_EVENT_A, ®_val); |
| 381 | if (err < 0) |
| 382 | goto error_i2c; |
| 383 | |
| 384 | if (reg_val & PV88080_E_VDD_FLT) { |
| 385 | for (i = 0; i < PV88080_MAX_REGULATORS; i++) { |
| 386 | if (chip->rdev[i] != NULL) { |
| 387 | regulator_notifier_call_chain(chip->rdev[i], |
| 388 | REGULATOR_EVENT_UNDER_VOLTAGE, |
| 389 | NULL); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | err = regmap_write(chip->regmap, PV88080_REG_EVENT_A, |
| 394 | PV88080_E_VDD_FLT); |
| 395 | if (err < 0) |
| 396 | goto error_i2c; |
| 397 | |
| 398 | ret = IRQ_HANDLED; |
| 399 | } |
| 400 | |
| 401 | if (reg_val & PV88080_E_OVER_TEMP) { |
| 402 | for (i = 0; i < PV88080_MAX_REGULATORS; i++) { |
| 403 | if (chip->rdev[i] != NULL) { |
| 404 | regulator_notifier_call_chain(chip->rdev[i], |
| 405 | REGULATOR_EVENT_OVER_TEMP, |
| 406 | NULL); |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | err = regmap_write(chip->regmap, PV88080_REG_EVENT_A, |
| 411 | PV88080_E_OVER_TEMP); |
| 412 | if (err < 0) |
| 413 | goto error_i2c; |
| 414 | |
| 415 | ret = IRQ_HANDLED; |
| 416 | } |
| 417 | |
| 418 | return ret; |
| 419 | |
| 420 | error_i2c: |
| 421 | dev_err(chip->dev, "I2C error : %d\n", err); |
| 422 | return IRQ_NONE; |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | * I2C driver interface functions |
| 427 | */ |
| 428 | static int pv88080_i2c_probe(struct i2c_client *i2c, |
| 429 | const struct i2c_device_id *id) |
| 430 | { |
| 431 | struct regulator_init_data *init_data = dev_get_platdata(&i2c->dev); |
| 432 | struct pv88080 *chip; |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 433 | const struct pv88080_compatible_regmap *regmap_config; |
| 434 | const struct of_device_id *match; |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 435 | struct regulator_config config = { }; |
| 436 | int i, error, ret; |
| 437 | unsigned int conf2, conf5; |
| 438 | |
| 439 | chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88080), GFP_KERNEL); |
| 440 | if (!chip) |
| 441 | return -ENOMEM; |
| 442 | |
| 443 | chip->dev = &i2c->dev; |
| 444 | chip->regmap = devm_regmap_init_i2c(i2c, &pv88080_regmap_config); |
| 445 | if (IS_ERR(chip->regmap)) { |
| 446 | error = PTR_ERR(chip->regmap); |
| 447 | dev_err(chip->dev, "Failed to allocate register map: %d\n", |
| 448 | error); |
| 449 | return error; |
| 450 | } |
| 451 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 452 | if (i2c->dev.of_node) { |
| 453 | match = of_match_node(pv88080_dt_ids, i2c->dev.of_node); |
| 454 | if (!match) { |
| 455 | dev_err(chip->dev, "Failed to get of_match_node\n"); |
| 456 | return -EINVAL; |
| 457 | } |
| 458 | chip->type = (unsigned long)match->data; |
| 459 | } else { |
| 460 | chip->type = id->driver_data; |
| 461 | } |
| 462 | |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 463 | i2c_set_clientdata(i2c, chip); |
| 464 | |
| 465 | if (i2c->irq != 0) { |
| 466 | ret = regmap_write(chip->regmap, PV88080_REG_MASK_A, 0xFF); |
| 467 | if (ret < 0) { |
| 468 | dev_err(chip->dev, |
| 469 | "Failed to mask A reg: %d\n", ret); |
| 470 | return ret; |
| 471 | } |
| 472 | ret = regmap_write(chip->regmap, PV88080_REG_MASK_B, 0xFF); |
| 473 | if (ret < 0) { |
| 474 | dev_err(chip->dev, |
| 475 | "Failed to mask B reg: %d\n", ret); |
| 476 | return ret; |
| 477 | } |
| 478 | ret = regmap_write(chip->regmap, PV88080_REG_MASK_C, 0xFF); |
| 479 | if (ret < 0) { |
| 480 | dev_err(chip->dev, |
| 481 | "Failed to mask C reg: %d\n", ret); |
| 482 | return ret; |
| 483 | } |
| 484 | |
| 485 | ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL, |
| 486 | pv88080_irq_handler, |
| 487 | IRQF_TRIGGER_LOW|IRQF_ONESHOT, |
| 488 | "pv88080", chip); |
| 489 | if (ret != 0) { |
| 490 | dev_err(chip->dev, "Failed to request IRQ: %d\n", |
| 491 | i2c->irq); |
| 492 | return ret; |
| 493 | } |
| 494 | |
| 495 | ret = regmap_update_bits(chip->regmap, PV88080_REG_MASK_A, |
| 496 | PV88080_M_VDD_FLT | PV88080_M_OVER_TEMP, 0); |
| 497 | if (ret < 0) { |
| 498 | dev_err(chip->dev, |
| 499 | "Failed to update mask reg: %d\n", ret); |
| 500 | return ret; |
| 501 | } |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 502 | } else { |
| 503 | dev_warn(chip->dev, "No IRQ configured\n"); |
| 504 | } |
| 505 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 506 | switch (chip->type) { |
| 507 | case TYPE_PV88080_AA: |
| 508 | chip->regmap_config = &pv88080_aa_regs; |
| 509 | break; |
| 510 | case TYPE_PV88080_BA: |
| 511 | chip->regmap_config = &pv88080_ba_regs; |
| 512 | break; |
| 513 | } |
| 514 | |
| 515 | regmap_config = chip->regmap_config; |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 516 | config.dev = chip->dev; |
| 517 | config.regmap = chip->regmap; |
| 518 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 519 | /* Registeration for BUCK1, 2, 3 */ |
| 520 | for (i = 0; i < PV88080_MAX_REGULATORS-1; i++) { |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 521 | if (init_data) |
| 522 | config.init_data = &init_data[i]; |
| 523 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 524 | pv88080_regulator_info[i].limit_reg |
| 525 | = regmap_config->buck_regmap[i].buck_limit_reg; |
| 526 | pv88080_regulator_info[i].limit_mask |
| 527 | = regmap_config->buck_regmap[i].buck_limit_mask; |
| 528 | pv88080_regulator_info[i].mode_reg |
| 529 | = regmap_config->buck_regmap[i].buck_mode_reg; |
| 530 | pv88080_regulator_info[i].conf2 |
| 531 | = regmap_config->buck_regmap[i].buck_vdac_range_reg; |
| 532 | pv88080_regulator_info[i].conf5 |
| 533 | = regmap_config->buck_regmap[i].buck_vrange_gain_reg; |
| 534 | pv88080_regulator_info[i].desc.enable_reg |
| 535 | = regmap_config->buck_regmap[i].buck_enable_reg; |
| 536 | pv88080_regulator_info[i].desc.enable_mask |
| 537 | = regmap_config->buck_regmap[i].buck_enable_mask; |
| 538 | pv88080_regulator_info[i].desc.vsel_reg |
| 539 | = regmap_config->buck_regmap[i].buck_vsel_reg; |
| 540 | pv88080_regulator_info[i].desc.vsel_mask |
| 541 | = regmap_config->buck_regmap[i].buck_vsel_mask; |
| 542 | |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 543 | ret = regmap_read(chip->regmap, |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 544 | pv88080_regulator_info[i].conf2, &conf2); |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 545 | if (ret < 0) |
| 546 | return ret; |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 547 | conf2 = ((conf2 >> PV88080_BUCK_VDAC_RANGE_SHIFT) & |
| 548 | PV88080_BUCK_VDAC_RANGE_MASK); |
| 549 | |
| 550 | ret = regmap_read(chip->regmap, |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 551 | pv88080_regulator_info[i].conf5, &conf5); |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 552 | if (ret < 0) |
| 553 | return ret; |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 554 | conf5 = ((conf5 >> PV88080_BUCK_VRANGE_GAIN_SHIFT) & |
| 555 | PV88080_BUCK_VRANGE_GAIN_MASK); |
| 556 | |
| 557 | pv88080_regulator_info[i].desc.min_uV = |
| 558 | pv88080_buck_vol[conf2].min_uV * (conf5+1); |
| 559 | pv88080_regulator_info[i].desc.uV_step = |
| 560 | pv88080_buck_vol[conf2].uV_step * (conf5+1); |
| 561 | pv88080_regulator_info[i].desc.n_voltages = |
| 562 | ((pv88080_buck_vol[conf2].max_uV * (conf5+1)) |
| 563 | - (pv88080_regulator_info[i].desc.min_uV)) |
| 564 | /(pv88080_regulator_info[i].desc.uV_step) + 1; |
| 565 | |
| 566 | config.driver_data = (void *)&pv88080_regulator_info[i]; |
| 567 | chip->rdev[i] = devm_regulator_register(chip->dev, |
| 568 | &pv88080_regulator_info[i].desc, &config); |
| 569 | if (IS_ERR(chip->rdev[i])) { |
| 570 | dev_err(chip->dev, |
| 571 | "Failed to register PV88080 regulator\n"); |
| 572 | return PTR_ERR(chip->rdev[i]); |
| 573 | } |
| 574 | } |
| 575 | |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 576 | pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_reg |
| 577 | = regmap_config->hvbuck_enable_reg; |
| 578 | pv88080_regulator_info[PV88080_ID_HVBUCK].desc.enable_mask |
| 579 | = regmap_config->hvbuck_enable_mask; |
| 580 | pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_reg |
| 581 | = regmap_config->hvbuck_vsel_reg; |
| 582 | pv88080_regulator_info[PV88080_ID_HVBUCK].desc.vsel_mask |
| 583 | = regmap_config->hvbuck_vsel_mask; |
| 584 | |
| 585 | /* Registeration for HVBUCK */ |
| 586 | if (init_data) |
| 587 | config.init_data = &init_data[PV88080_ID_HVBUCK]; |
| 588 | |
| 589 | config.driver_data = (void *)&pv88080_regulator_info[PV88080_ID_HVBUCK]; |
| 590 | chip->rdev[PV88080_ID_HVBUCK] = devm_regulator_register(chip->dev, |
| 591 | &pv88080_regulator_info[PV88080_ID_HVBUCK].desc, &config); |
| 592 | if (IS_ERR(chip->rdev[PV88080_ID_HVBUCK])) { |
| 593 | dev_err(chip->dev, "Failed to register PV88080 regulator\n"); |
| 594 | return PTR_ERR(chip->rdev[PV88080_ID_HVBUCK]); |
| 595 | } |
| 596 | |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | static const struct i2c_device_id pv88080_i2c_id[] = { |
Eric Jeong | 5ff00f6 | 2016-09-26 16:33:27 +0900 | [diff] [blame] | 601 | { "pv88080", TYPE_PV88080_AA }, |
| 602 | { "pv88080-aa", TYPE_PV88080_AA }, |
| 603 | { "pv88080-ba", TYPE_PV88080_BA }, |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 604 | {}, |
| 605 | }; |
| 606 | MODULE_DEVICE_TABLE(i2c, pv88080_i2c_id); |
| 607 | |
James Ban | 99cf3af | 2016-04-15 13:34:22 +0900 | [diff] [blame] | 608 | static struct i2c_driver pv88080_regulator_driver = { |
| 609 | .driver = { |
| 610 | .name = "pv88080", |
| 611 | .of_match_table = of_match_ptr(pv88080_dt_ids), |
| 612 | }, |
| 613 | .probe = pv88080_i2c_probe, |
| 614 | .id_table = pv88080_i2c_id, |
| 615 | }; |
| 616 | |
| 617 | module_i2c_driver(pv88080_regulator_driver); |
| 618 | |
| 619 | MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>"); |
| 620 | MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88080"); |
| 621 | MODULE_LICENSE("GPL"); |