S Twiss | 9b40b03 | 2015-07-01 14:11:32 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Core, IRQ and I2C device driver for DA9062 PMIC |
| 3 | * Copyright (C) 2015 Dialog 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/kernel.h> |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/device.h> |
| 20 | #include <linux/interrupt.h> |
| 21 | #include <linux/regmap.h> |
| 22 | #include <linux/irq.h> |
| 23 | #include <linux/mfd/core.h> |
| 24 | #include <linux/i2c.h> |
| 25 | #include <linux/mfd/da9062/core.h> |
| 26 | #include <linux/mfd/da9062/registers.h> |
| 27 | #include <linux/regulator/of_regulator.h> |
| 28 | |
| 29 | #define DA9062_REG_EVENT_A_OFFSET 0 |
| 30 | #define DA9062_REG_EVENT_B_OFFSET 1 |
| 31 | #define DA9062_REG_EVENT_C_OFFSET 2 |
| 32 | |
| 33 | static struct regmap_irq da9062_irqs[] = { |
| 34 | /* EVENT A */ |
| 35 | [DA9062_IRQ_ONKEY] = { |
| 36 | .reg_offset = DA9062_REG_EVENT_A_OFFSET, |
| 37 | .mask = DA9062AA_M_NONKEY_MASK, |
| 38 | }, |
| 39 | [DA9062_IRQ_ALARM] = { |
| 40 | .reg_offset = DA9062_REG_EVENT_A_OFFSET, |
| 41 | .mask = DA9062AA_M_ALARM_MASK, |
| 42 | }, |
| 43 | [DA9062_IRQ_TICK] = { |
| 44 | .reg_offset = DA9062_REG_EVENT_A_OFFSET, |
| 45 | .mask = DA9062AA_M_TICK_MASK, |
| 46 | }, |
| 47 | [DA9062_IRQ_WDG_WARN] = { |
| 48 | .reg_offset = DA9062_REG_EVENT_A_OFFSET, |
| 49 | .mask = DA9062AA_M_WDG_WARN_MASK, |
| 50 | }, |
| 51 | [DA9062_IRQ_SEQ_RDY] = { |
| 52 | .reg_offset = DA9062_REG_EVENT_A_OFFSET, |
| 53 | .mask = DA9062AA_M_SEQ_RDY_MASK, |
| 54 | }, |
| 55 | /* EVENT B */ |
| 56 | [DA9062_IRQ_TEMP] = { |
| 57 | .reg_offset = DA9062_REG_EVENT_B_OFFSET, |
| 58 | .mask = DA9062AA_M_TEMP_MASK, |
| 59 | }, |
| 60 | [DA9062_IRQ_LDO_LIM] = { |
| 61 | .reg_offset = DA9062_REG_EVENT_B_OFFSET, |
| 62 | .mask = DA9062AA_M_LDO_LIM_MASK, |
| 63 | }, |
| 64 | [DA9062_IRQ_DVC_RDY] = { |
| 65 | .reg_offset = DA9062_REG_EVENT_B_OFFSET, |
| 66 | .mask = DA9062AA_M_DVC_RDY_MASK, |
| 67 | }, |
| 68 | [DA9062_IRQ_VDD_WARN] = { |
| 69 | .reg_offset = DA9062_REG_EVENT_B_OFFSET, |
| 70 | .mask = DA9062AA_M_VDD_WARN_MASK, |
| 71 | }, |
| 72 | /* EVENT C */ |
| 73 | [DA9062_IRQ_GPI0] = { |
| 74 | .reg_offset = DA9062_REG_EVENT_C_OFFSET, |
| 75 | .mask = DA9062AA_M_GPI0_MASK, |
| 76 | }, |
| 77 | [DA9062_IRQ_GPI1] = { |
| 78 | .reg_offset = DA9062_REG_EVENT_C_OFFSET, |
| 79 | .mask = DA9062AA_M_GPI1_MASK, |
| 80 | }, |
| 81 | [DA9062_IRQ_GPI2] = { |
| 82 | .reg_offset = DA9062_REG_EVENT_C_OFFSET, |
| 83 | .mask = DA9062AA_M_GPI2_MASK, |
| 84 | }, |
| 85 | [DA9062_IRQ_GPI3] = { |
| 86 | .reg_offset = DA9062_REG_EVENT_C_OFFSET, |
| 87 | .mask = DA9062AA_M_GPI3_MASK, |
| 88 | }, |
| 89 | [DA9062_IRQ_GPI4] = { |
| 90 | .reg_offset = DA9062_REG_EVENT_C_OFFSET, |
| 91 | .mask = DA9062AA_M_GPI4_MASK, |
| 92 | }, |
| 93 | }; |
| 94 | |
| 95 | static struct regmap_irq_chip da9062_irq_chip = { |
| 96 | .name = "da9062-irq", |
| 97 | .irqs = da9062_irqs, |
| 98 | .num_irqs = DA9062_NUM_IRQ, |
| 99 | .num_regs = 3, |
| 100 | .status_base = DA9062AA_EVENT_A, |
| 101 | .mask_base = DA9062AA_IRQ_MASK_A, |
| 102 | .ack_base = DA9062AA_EVENT_A, |
| 103 | }; |
| 104 | |
| 105 | static struct resource da9062_core_resources[] = { |
| 106 | DEFINE_RES_NAMED(DA9062_IRQ_VDD_WARN, 1, "VDD_WARN", IORESOURCE_IRQ), |
| 107 | }; |
| 108 | |
| 109 | static struct resource da9062_regulators_resources[] = { |
| 110 | DEFINE_RES_NAMED(DA9062_IRQ_LDO_LIM, 1, "LDO_LIM", IORESOURCE_IRQ), |
| 111 | }; |
| 112 | |
| 113 | static struct resource da9062_thermal_resources[] = { |
| 114 | DEFINE_RES_NAMED(DA9062_IRQ_TEMP, 1, "THERMAL", IORESOURCE_IRQ), |
| 115 | }; |
| 116 | |
| 117 | static struct resource da9062_wdt_resources[] = { |
| 118 | DEFINE_RES_NAMED(DA9062_IRQ_WDG_WARN, 1, "WD_WARN", IORESOURCE_IRQ), |
| 119 | }; |
| 120 | |
S Twiss | ca1ce17 | 2015-07-21 11:29:06 +0100 | [diff] [blame] | 121 | static struct resource da9062_rtc_resources[] = { |
| 122 | DEFINE_RES_NAMED(DA9062_IRQ_ALARM, 1, "ALARM", IORESOURCE_IRQ), |
| 123 | DEFINE_RES_NAMED(DA9062_IRQ_TICK, 1, "TICK", IORESOURCE_IRQ), |
| 124 | }; |
| 125 | |
S Twiss | 68b6fd0 | 2015-07-23 17:17:41 +0100 | [diff] [blame] | 126 | static struct resource da9062_onkey_resources[] = { |
| 127 | DEFINE_RES_NAMED(DA9062_IRQ_ONKEY, 1, "ONKEY", IORESOURCE_IRQ), |
| 128 | }; |
| 129 | |
S Twiss | 9b40b03 | 2015-07-01 14:11:32 +0100 | [diff] [blame] | 130 | static const struct mfd_cell da9062_devs[] = { |
| 131 | { |
| 132 | .name = "da9062-core", |
| 133 | .num_resources = ARRAY_SIZE(da9062_core_resources), |
| 134 | .resources = da9062_core_resources, |
| 135 | }, |
| 136 | { |
| 137 | .name = "da9062-regulators", |
| 138 | .num_resources = ARRAY_SIZE(da9062_regulators_resources), |
| 139 | .resources = da9062_regulators_resources, |
| 140 | }, |
| 141 | { |
| 142 | .name = "da9062-watchdog", |
| 143 | .num_resources = ARRAY_SIZE(da9062_wdt_resources), |
| 144 | .resources = da9062_wdt_resources, |
| 145 | .of_compatible = "dlg,da9062-wdt", |
| 146 | }, |
| 147 | { |
| 148 | .name = "da9062-thermal", |
| 149 | .num_resources = ARRAY_SIZE(da9062_thermal_resources), |
| 150 | .resources = da9062_thermal_resources, |
| 151 | .of_compatible = "dlg,da9062-thermal", |
| 152 | }, |
S Twiss | ca1ce17 | 2015-07-21 11:29:06 +0100 | [diff] [blame] | 153 | { |
| 154 | .name = "da9062-rtc", |
| 155 | .num_resources = ARRAY_SIZE(da9062_rtc_resources), |
| 156 | .resources = da9062_rtc_resources, |
| 157 | .of_compatible = "dlg,da9062-rtc", |
| 158 | }, |
S Twiss | 68b6fd0 | 2015-07-23 17:17:41 +0100 | [diff] [blame] | 159 | { |
| 160 | .name = "da9062-onkey", |
| 161 | .num_resources = ARRAY_SIZE(da9062_onkey_resources), |
| 162 | .resources = da9062_onkey_resources, |
| 163 | .of_compatible = "dlg,da9062-onkey", |
| 164 | }, |
S Twiss | 9b40b03 | 2015-07-01 14:11:32 +0100 | [diff] [blame] | 165 | }; |
| 166 | |
| 167 | static int da9062_clear_fault_log(struct da9062 *chip) |
| 168 | { |
| 169 | int ret; |
| 170 | int fault_log; |
| 171 | |
| 172 | ret = regmap_read(chip->regmap, DA9062AA_FAULT_LOG, &fault_log); |
| 173 | if (ret < 0) |
| 174 | return ret; |
| 175 | |
| 176 | if (fault_log) { |
| 177 | if (fault_log & DA9062AA_TWD_ERROR_MASK) |
| 178 | dev_dbg(chip->dev, "Fault log entry detected: TWD_ERROR\n"); |
| 179 | if (fault_log & DA9062AA_POR_MASK) |
| 180 | dev_dbg(chip->dev, "Fault log entry detected: POR\n"); |
| 181 | if (fault_log & DA9062AA_VDD_FAULT_MASK) |
| 182 | dev_dbg(chip->dev, "Fault log entry detected: VDD_FAULT\n"); |
| 183 | if (fault_log & DA9062AA_VDD_START_MASK) |
| 184 | dev_dbg(chip->dev, "Fault log entry detected: VDD_START\n"); |
| 185 | if (fault_log & DA9062AA_TEMP_CRIT_MASK) |
| 186 | dev_dbg(chip->dev, "Fault log entry detected: TEMP_CRIT\n"); |
| 187 | if (fault_log & DA9062AA_KEY_RESET_MASK) |
| 188 | dev_dbg(chip->dev, "Fault log entry detected: KEY_RESET\n"); |
| 189 | if (fault_log & DA9062AA_NSHUTDOWN_MASK) |
| 190 | dev_dbg(chip->dev, "Fault log entry detected: NSHUTDOWN\n"); |
| 191 | if (fault_log & DA9062AA_WAIT_SHUT_MASK) |
| 192 | dev_dbg(chip->dev, "Fault log entry detected: WAIT_SHUT\n"); |
| 193 | |
| 194 | ret = regmap_write(chip->regmap, DA9062AA_FAULT_LOG, |
| 195 | fault_log); |
| 196 | } |
| 197 | |
| 198 | return ret; |
| 199 | } |
| 200 | |
| 201 | int get_device_type(struct da9062 *chip) |
| 202 | { |
| 203 | int device_id, variant_id, variant_mrc; |
| 204 | int ret; |
| 205 | |
| 206 | ret = regmap_read(chip->regmap, DA9062AA_DEVICE_ID, &device_id); |
| 207 | if (ret < 0) { |
| 208 | dev_err(chip->dev, "Cannot read chip ID.\n"); |
| 209 | return -EIO; |
| 210 | } |
| 211 | if (device_id != DA9062_PMIC_DEVICE_ID) { |
| 212 | dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id); |
| 213 | return -ENODEV; |
| 214 | } |
| 215 | |
| 216 | ret = regmap_read(chip->regmap, DA9062AA_VARIANT_ID, &variant_id); |
| 217 | if (ret < 0) { |
| 218 | dev_err(chip->dev, "Cannot read chip variant id.\n"); |
| 219 | return -EIO; |
| 220 | } |
| 221 | |
| 222 | dev_info(chip->dev, |
| 223 | "Device detected (device-ID: 0x%02X, var-ID: 0x%02X)\n", |
| 224 | device_id, variant_id); |
| 225 | |
| 226 | variant_mrc = (variant_id & DA9062AA_MRC_MASK) >> DA9062AA_MRC_SHIFT; |
| 227 | |
| 228 | if (variant_mrc < DA9062_PMIC_VARIANT_MRC_AA) { |
| 229 | dev_err(chip->dev, |
| 230 | "Cannot support variant MRC: 0x%02X\n", variant_mrc); |
| 231 | return -ENODEV; |
| 232 | } |
| 233 | |
| 234 | return ret; |
| 235 | } |
| 236 | |
| 237 | static const struct regmap_range da9062_aa_readable_ranges[] = { |
| 238 | { |
| 239 | .range_min = DA9062AA_PAGE_CON, |
| 240 | .range_max = DA9062AA_STATUS_B, |
| 241 | }, { |
| 242 | .range_min = DA9062AA_STATUS_D, |
| 243 | .range_max = DA9062AA_EVENT_C, |
| 244 | }, { |
| 245 | .range_min = DA9062AA_IRQ_MASK_A, |
| 246 | .range_max = DA9062AA_IRQ_MASK_C, |
| 247 | }, { |
| 248 | .range_min = DA9062AA_CONTROL_A, |
| 249 | .range_max = DA9062AA_GPIO_4, |
| 250 | }, { |
| 251 | .range_min = DA9062AA_GPIO_WKUP_MODE, |
| 252 | .range_max = DA9062AA_BUCK4_CONT, |
| 253 | }, { |
| 254 | .range_min = DA9062AA_BUCK3_CONT, |
| 255 | .range_max = DA9062AA_BUCK3_CONT, |
| 256 | }, { |
| 257 | .range_min = DA9062AA_LDO1_CONT, |
| 258 | .range_max = DA9062AA_LDO4_CONT, |
| 259 | }, { |
| 260 | .range_min = DA9062AA_DVC_1, |
| 261 | .range_max = DA9062AA_DVC_1, |
| 262 | }, { |
| 263 | .range_min = DA9062AA_COUNT_S, |
| 264 | .range_max = DA9062AA_SECOND_D, |
| 265 | }, { |
| 266 | .range_min = DA9062AA_SEQ, |
| 267 | .range_max = DA9062AA_ID_4_3, |
| 268 | }, { |
| 269 | .range_min = DA9062AA_ID_12_11, |
| 270 | .range_max = DA9062AA_ID_16_15, |
| 271 | }, { |
| 272 | .range_min = DA9062AA_ID_22_21, |
| 273 | .range_max = DA9062AA_ID_32_31, |
| 274 | }, { |
| 275 | .range_min = DA9062AA_SEQ_A, |
| 276 | .range_max = DA9062AA_BUCK3_CFG, |
| 277 | }, { |
| 278 | .range_min = DA9062AA_VBUCK2_A, |
| 279 | .range_max = DA9062AA_VBUCK4_A, |
| 280 | }, { |
| 281 | .range_min = DA9062AA_VBUCK3_A, |
| 282 | .range_max = DA9062AA_VBUCK3_A, |
| 283 | }, { |
| 284 | .range_min = DA9062AA_VLDO1_A, |
| 285 | .range_max = DA9062AA_VLDO4_A, |
| 286 | }, { |
| 287 | .range_min = DA9062AA_VBUCK2_B, |
| 288 | .range_max = DA9062AA_VBUCK4_B, |
| 289 | }, { |
| 290 | .range_min = DA9062AA_VBUCK3_B, |
| 291 | .range_max = DA9062AA_VBUCK3_B, |
| 292 | }, { |
| 293 | .range_min = DA9062AA_VLDO1_B, |
| 294 | .range_max = DA9062AA_VLDO4_B, |
| 295 | }, { |
| 296 | .range_min = DA9062AA_BBAT_CONT, |
| 297 | .range_max = DA9062AA_BBAT_CONT, |
| 298 | }, { |
| 299 | .range_min = DA9062AA_INTERFACE, |
| 300 | .range_max = DA9062AA_CONFIG_E, |
| 301 | }, { |
| 302 | .range_min = DA9062AA_CONFIG_G, |
| 303 | .range_max = DA9062AA_CONFIG_K, |
| 304 | }, { |
| 305 | .range_min = DA9062AA_CONFIG_M, |
| 306 | .range_max = DA9062AA_CONFIG_M, |
| 307 | }, { |
| 308 | .range_min = DA9062AA_TRIM_CLDR, |
| 309 | .range_max = DA9062AA_GP_ID_19, |
| 310 | }, { |
| 311 | .range_min = DA9062AA_DEVICE_ID, |
| 312 | .range_max = DA9062AA_CONFIG_ID, |
| 313 | }, |
| 314 | }; |
| 315 | |
| 316 | static const struct regmap_range da9062_aa_writeable_ranges[] = { |
| 317 | { |
| 318 | .range_min = DA9062AA_PAGE_CON, |
| 319 | .range_max = DA9062AA_PAGE_CON, |
| 320 | }, { |
| 321 | .range_min = DA9062AA_FAULT_LOG, |
| 322 | .range_max = DA9062AA_EVENT_C, |
| 323 | }, { |
| 324 | .range_min = DA9062AA_IRQ_MASK_A, |
| 325 | .range_max = DA9062AA_IRQ_MASK_C, |
| 326 | }, { |
| 327 | .range_min = DA9062AA_CONTROL_A, |
| 328 | .range_max = DA9062AA_GPIO_4, |
| 329 | }, { |
| 330 | .range_min = DA9062AA_GPIO_WKUP_MODE, |
| 331 | .range_max = DA9062AA_BUCK4_CONT, |
| 332 | }, { |
| 333 | .range_min = DA9062AA_BUCK3_CONT, |
| 334 | .range_max = DA9062AA_BUCK3_CONT, |
| 335 | }, { |
| 336 | .range_min = DA9062AA_LDO1_CONT, |
| 337 | .range_max = DA9062AA_LDO4_CONT, |
| 338 | }, { |
| 339 | .range_min = DA9062AA_DVC_1, |
| 340 | .range_max = DA9062AA_DVC_1, |
| 341 | }, { |
| 342 | .range_min = DA9062AA_COUNT_S, |
| 343 | .range_max = DA9062AA_ALARM_Y, |
| 344 | }, { |
| 345 | .range_min = DA9062AA_SEQ, |
| 346 | .range_max = DA9062AA_ID_4_3, |
| 347 | }, { |
| 348 | .range_min = DA9062AA_ID_12_11, |
| 349 | .range_max = DA9062AA_ID_16_15, |
| 350 | }, { |
| 351 | .range_min = DA9062AA_ID_22_21, |
| 352 | .range_max = DA9062AA_ID_32_31, |
| 353 | }, { |
| 354 | .range_min = DA9062AA_SEQ_A, |
| 355 | .range_max = DA9062AA_BUCK3_CFG, |
| 356 | }, { |
| 357 | .range_min = DA9062AA_VBUCK2_A, |
| 358 | .range_max = DA9062AA_VBUCK4_A, |
| 359 | }, { |
| 360 | .range_min = DA9062AA_VBUCK3_A, |
| 361 | .range_max = DA9062AA_VBUCK3_A, |
| 362 | }, { |
| 363 | .range_min = DA9062AA_VLDO1_A, |
| 364 | .range_max = DA9062AA_VLDO4_A, |
| 365 | }, { |
| 366 | .range_min = DA9062AA_VBUCK2_B, |
| 367 | .range_max = DA9062AA_VBUCK4_B, |
| 368 | }, { |
| 369 | .range_min = DA9062AA_VBUCK3_B, |
| 370 | .range_max = DA9062AA_VBUCK3_B, |
| 371 | }, { |
| 372 | .range_min = DA9062AA_VLDO1_B, |
| 373 | .range_max = DA9062AA_VLDO4_B, |
| 374 | }, { |
| 375 | .range_min = DA9062AA_BBAT_CONT, |
| 376 | .range_max = DA9062AA_BBAT_CONT, |
| 377 | }, { |
| 378 | .range_min = DA9062AA_GP_ID_0, |
| 379 | .range_max = DA9062AA_GP_ID_19, |
| 380 | }, |
| 381 | }; |
| 382 | |
| 383 | static const struct regmap_range da9062_aa_volatile_ranges[] = { |
| 384 | { |
| 385 | .range_min = DA9062AA_PAGE_CON, |
| 386 | .range_max = DA9062AA_STATUS_B, |
| 387 | }, { |
| 388 | .range_min = DA9062AA_STATUS_D, |
| 389 | .range_max = DA9062AA_EVENT_C, |
| 390 | }, { |
| 391 | .range_min = DA9062AA_CONTROL_F, |
| 392 | .range_max = DA9062AA_CONTROL_F, |
| 393 | }, { |
| 394 | .range_min = DA9062AA_COUNT_S, |
| 395 | .range_max = DA9062AA_SECOND_D, |
| 396 | }, |
| 397 | }; |
| 398 | |
| 399 | static const struct regmap_access_table da9062_aa_readable_table = { |
| 400 | .yes_ranges = da9062_aa_readable_ranges, |
| 401 | .n_yes_ranges = ARRAY_SIZE(da9062_aa_readable_ranges), |
| 402 | }; |
| 403 | |
| 404 | static const struct regmap_access_table da9062_aa_writeable_table = { |
| 405 | .yes_ranges = da9062_aa_writeable_ranges, |
| 406 | .n_yes_ranges = ARRAY_SIZE(da9062_aa_writeable_ranges), |
| 407 | }; |
| 408 | |
| 409 | static const struct regmap_access_table da9062_aa_volatile_table = { |
| 410 | .yes_ranges = da9062_aa_volatile_ranges, |
| 411 | .n_yes_ranges = ARRAY_SIZE(da9062_aa_volatile_ranges), |
| 412 | }; |
| 413 | |
| 414 | static const struct regmap_range_cfg da9062_range_cfg[] = { |
| 415 | { |
| 416 | .range_min = DA9062AA_PAGE_CON, |
| 417 | .range_max = DA9062AA_CONFIG_ID, |
| 418 | .selector_reg = DA9062AA_PAGE_CON, |
| 419 | .selector_mask = 1 << DA9062_I2C_PAGE_SEL_SHIFT, |
| 420 | .selector_shift = DA9062_I2C_PAGE_SEL_SHIFT, |
| 421 | .window_start = 0, |
| 422 | .window_len = 256, |
| 423 | } |
| 424 | }; |
| 425 | |
| 426 | static struct regmap_config da9062_regmap_config = { |
| 427 | .reg_bits = 8, |
| 428 | .val_bits = 8, |
| 429 | .ranges = da9062_range_cfg, |
| 430 | .num_ranges = ARRAY_SIZE(da9062_range_cfg), |
| 431 | .max_register = DA9062AA_CONFIG_ID, |
| 432 | .cache_type = REGCACHE_RBTREE, |
| 433 | .rd_table = &da9062_aa_readable_table, |
| 434 | .wr_table = &da9062_aa_writeable_table, |
| 435 | .volatile_table = &da9062_aa_volatile_table, |
| 436 | }; |
| 437 | |
| 438 | static int da9062_i2c_probe(struct i2c_client *i2c, |
| 439 | const struct i2c_device_id *id) |
| 440 | { |
| 441 | struct da9062 *chip; |
| 442 | unsigned int irq_base; |
| 443 | int ret; |
| 444 | |
| 445 | chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL); |
| 446 | if (!chip) |
| 447 | return -ENOMEM; |
| 448 | |
| 449 | i2c_set_clientdata(i2c, chip); |
| 450 | chip->dev = &i2c->dev; |
| 451 | |
| 452 | if (!i2c->irq) { |
| 453 | dev_err(chip->dev, "No IRQ configured\n"); |
| 454 | return -EINVAL; |
| 455 | } |
| 456 | |
| 457 | chip->regmap = devm_regmap_init_i2c(i2c, &da9062_regmap_config); |
| 458 | if (IS_ERR(chip->regmap)) { |
| 459 | ret = PTR_ERR(chip->regmap); |
| 460 | dev_err(chip->dev, "Failed to allocate register map: %d\n", |
| 461 | ret); |
| 462 | return ret; |
| 463 | } |
| 464 | |
| 465 | ret = da9062_clear_fault_log(chip); |
| 466 | if (ret < 0) |
| 467 | dev_warn(chip->dev, "Cannot clear fault log\n"); |
| 468 | |
| 469 | ret = get_device_type(chip); |
| 470 | if (ret) |
| 471 | return ret; |
| 472 | |
| 473 | ret = regmap_add_irq_chip(chip->regmap, i2c->irq, |
| 474 | IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED, |
| 475 | -1, &da9062_irq_chip, |
| 476 | &chip->regmap_irq); |
| 477 | if (ret) { |
| 478 | dev_err(chip->dev, "Failed to request IRQ %d: %d\n", |
| 479 | i2c->irq, ret); |
| 480 | return ret; |
| 481 | } |
| 482 | |
| 483 | irq_base = regmap_irq_chip_get_base(chip->regmap_irq); |
| 484 | |
| 485 | ret = mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, da9062_devs, |
| 486 | ARRAY_SIZE(da9062_devs), NULL, irq_base, |
| 487 | NULL); |
| 488 | if (ret) { |
| 489 | dev_err(chip->dev, "Cannot register child devices\n"); |
| 490 | regmap_del_irq_chip(i2c->irq, chip->regmap_irq); |
| 491 | return ret; |
| 492 | } |
| 493 | |
| 494 | return ret; |
| 495 | } |
| 496 | |
| 497 | static int da9062_i2c_remove(struct i2c_client *i2c) |
| 498 | { |
| 499 | struct da9062 *chip = i2c_get_clientdata(i2c); |
| 500 | |
| 501 | mfd_remove_devices(chip->dev); |
| 502 | regmap_del_irq_chip(i2c->irq, chip->regmap_irq); |
| 503 | |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static const struct i2c_device_id da9062_i2c_id[] = { |
| 508 | { "da9062", 0 }, |
| 509 | { }, |
| 510 | }; |
| 511 | MODULE_DEVICE_TABLE(i2c, da9062_i2c_id); |
| 512 | |
| 513 | static const struct of_device_id da9062_dt_ids[] = { |
| 514 | { .compatible = "dlg,da9062", }, |
| 515 | { } |
| 516 | }; |
| 517 | MODULE_DEVICE_TABLE(of, da9062_dt_ids); |
| 518 | |
| 519 | static struct i2c_driver da9062_i2c_driver = { |
| 520 | .driver = { |
| 521 | .name = "da9062", |
| 522 | .of_match_table = of_match_ptr(da9062_dt_ids), |
| 523 | }, |
| 524 | .probe = da9062_i2c_probe, |
| 525 | .remove = da9062_i2c_remove, |
| 526 | .id_table = da9062_i2c_id, |
| 527 | }; |
| 528 | |
| 529 | module_i2c_driver(da9062_i2c_driver); |
| 530 | |
| 531 | MODULE_DESCRIPTION("Core device driver for Dialog DA9062"); |
| 532 | MODULE_AUTHOR("Steve Twiss <stwiss.opensource@diasemi.com>"); |
| 533 | MODULE_LICENSE("GPL"); |