1 /* 2 * Functions and registers to access AXP20X power management chip. 3 * 4 * Copyright (C) 2013, Carlo Caione <carlo@caione.org> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #ifndef __LINUX_MFD_AXP20X_H 12 #define __LINUX_MFD_AXP20X_H 13 14 #include <linux/regmap.h> 15 16 enum { 17 AXP152_ID = 0, 18 AXP202_ID, 19 AXP209_ID, 20 AXP221_ID, 21 AXP223_ID, 22 AXP288_ID, 23 AXP809_ID, 24 NR_AXP20X_VARIANTS, 25 }; 26 27 #define AXP20X_DATACACHE(m) (0x04 + (m)) 28 29 /* Power supply */ 30 #define AXP152_PWR_OP_MODE 0x01 31 #define AXP152_LDO3456_DC1234_CTRL 0x12 32 #define AXP152_ALDO_OP_MODE 0x13 33 #define AXP152_LDO0_CTRL 0x15 34 #define AXP152_DCDC2_V_OUT 0x23 35 #define AXP152_DCDC2_V_SCAL 0x25 36 #define AXP152_DCDC1_V_OUT 0x26 37 #define AXP152_DCDC3_V_OUT 0x27 38 #define AXP152_ALDO12_V_OUT 0x28 39 #define AXP152_DLDO1_V_OUT 0x29 40 #define AXP152_DLDO2_V_OUT 0x2a 41 #define AXP152_DCDC4_V_OUT 0x2b 42 #define AXP152_V_OFF 0x31 43 #define AXP152_OFF_CTRL 0x32 44 #define AXP152_PEK_KEY 0x36 45 #define AXP152_DCDC_FREQ 0x37 46 #define AXP152_DCDC_MODE 0x80 47 48 #define AXP20X_PWR_INPUT_STATUS 0x00 49 #define AXP20X_PWR_OP_MODE 0x01 50 #define AXP20X_USB_OTG_STATUS 0x02 51 #define AXP20X_PWR_OUT_CTRL 0x12 52 #define AXP20X_DCDC2_V_OUT 0x23 53 #define AXP20X_DCDC2_LDO3_V_SCAL 0x25 54 #define AXP20X_DCDC3_V_OUT 0x27 55 #define AXP20X_LDO24_V_OUT 0x28 56 #define AXP20X_LDO3_V_OUT 0x29 57 #define AXP20X_VBUS_IPSOUT_MGMT 0x30 58 #define AXP20X_V_OFF 0x31 59 #define AXP20X_OFF_CTRL 0x32 60 #define AXP20X_CHRG_CTRL1 0x33 61 #define AXP20X_CHRG_CTRL2 0x34 62 #define AXP20X_CHRG_BAK_CTRL 0x35 63 #define AXP20X_PEK_KEY 0x36 64 #define AXP20X_DCDC_FREQ 0x37 65 #define AXP20X_V_LTF_CHRG 0x38 66 #define AXP20X_V_HTF_CHRG 0x39 67 #define AXP20X_APS_WARN_L1 0x3a 68 #define AXP20X_APS_WARN_L2 0x3b 69 #define AXP20X_V_LTF_DISCHRG 0x3c 70 #define AXP20X_V_HTF_DISCHRG 0x3d 71 72 #define AXP22X_PWR_OUT_CTRL1 0x10 73 #define AXP22X_PWR_OUT_CTRL2 0x12 74 #define AXP22X_PWR_OUT_CTRL3 0x13 75 #define AXP22X_DLDO1_V_OUT 0x15 76 #define AXP22X_DLDO2_V_OUT 0x16 77 #define AXP22X_DLDO3_V_OUT 0x17 78 #define AXP22X_DLDO4_V_OUT 0x18 79 #define AXP22X_ELDO1_V_OUT 0x19 80 #define AXP22X_ELDO2_V_OUT 0x1a 81 #define AXP22X_ELDO3_V_OUT 0x1b 82 #define AXP22X_DC5LDO_V_OUT 0x1c 83 #define AXP22X_DCDC1_V_OUT 0x21 84 #define AXP22X_DCDC2_V_OUT 0x22 85 #define AXP22X_DCDC3_V_OUT 0x23 86 #define AXP22X_DCDC4_V_OUT 0x24 87 #define AXP22X_DCDC5_V_OUT 0x25 88 #define AXP22X_DCDC23_V_RAMP_CTRL 0x27 89 #define AXP22X_ALDO1_V_OUT 0x28 90 #define AXP22X_ALDO2_V_OUT 0x29 91 #define AXP22X_ALDO3_V_OUT 0x2a 92 #define AXP22X_CHRG_CTRL3 0x35 93 94 /* Interrupt */ 95 #define AXP152_IRQ1_EN 0x40 96 #define AXP152_IRQ2_EN 0x41 97 #define AXP152_IRQ3_EN 0x42 98 #define AXP152_IRQ1_STATE 0x48 99 #define AXP152_IRQ2_STATE 0x49 100 #define AXP152_IRQ3_STATE 0x4a 101 102 #define AXP20X_IRQ1_EN 0x40 103 #define AXP20X_IRQ2_EN 0x41 104 #define AXP20X_IRQ3_EN 0x42 105 #define AXP20X_IRQ4_EN 0x43 106 #define AXP20X_IRQ5_EN 0x44 107 #define AXP20X_IRQ6_EN 0x45 108 #define AXP20X_IRQ1_STATE 0x48 109 #define AXP20X_IRQ2_STATE 0x49 110 #define AXP20X_IRQ3_STATE 0x4a 111 #define AXP20X_IRQ4_STATE 0x4b 112 #define AXP20X_IRQ5_STATE 0x4c 113 #define AXP20X_IRQ6_STATE 0x4d 114 115 /* ADC */ 116 #define AXP20X_ACIN_V_ADC_H 0x56 117 #define AXP20X_ACIN_V_ADC_L 0x57 118 #define AXP20X_ACIN_I_ADC_H 0x58 119 #define AXP20X_ACIN_I_ADC_L 0x59 120 #define AXP20X_VBUS_V_ADC_H 0x5a 121 #define AXP20X_VBUS_V_ADC_L 0x5b 122 #define AXP20X_VBUS_I_ADC_H 0x5c 123 #define AXP20X_VBUS_I_ADC_L 0x5d 124 #define AXP20X_TEMP_ADC_H 0x5e 125 #define AXP20X_TEMP_ADC_L 0x5f 126 #define AXP20X_TS_IN_H 0x62 127 #define AXP20X_TS_IN_L 0x63 128 #define AXP20X_GPIO0_V_ADC_H 0x64 129 #define AXP20X_GPIO0_V_ADC_L 0x65 130 #define AXP20X_GPIO1_V_ADC_H 0x66 131 #define AXP20X_GPIO1_V_ADC_L 0x67 132 #define AXP20X_PWR_BATT_H 0x70 133 #define AXP20X_PWR_BATT_M 0x71 134 #define AXP20X_PWR_BATT_L 0x72 135 #define AXP20X_BATT_V_H 0x78 136 #define AXP20X_BATT_V_L 0x79 137 #define AXP20X_BATT_CHRG_I_H 0x7a 138 #define AXP20X_BATT_CHRG_I_L 0x7b 139 #define AXP20X_BATT_DISCHRG_I_H 0x7c 140 #define AXP20X_BATT_DISCHRG_I_L 0x7d 141 #define AXP20X_IPSOUT_V_HIGH_H 0x7e 142 #define AXP20X_IPSOUT_V_HIGH_L 0x7f 143 144 /* Power supply */ 145 #define AXP20X_DCDC_MODE 0x80 146 #define AXP20X_ADC_EN1 0x82 147 #define AXP20X_ADC_EN2 0x83 148 #define AXP20X_ADC_RATE 0x84 149 #define AXP20X_GPIO10_IN_RANGE 0x85 150 #define AXP20X_GPIO1_ADC_IRQ_RIS 0x86 151 #define AXP20X_GPIO1_ADC_IRQ_FAL 0x87 152 #define AXP20X_TIMER_CTRL 0x8a 153 #define AXP20X_VBUS_MON 0x8b 154 #define AXP20X_OVER_TMP 0x8f 155 156 #define AXP22X_PWREN_CTRL1 0x8c 157 #define AXP22X_PWREN_CTRL2 0x8d 158 159 /* GPIO */ 160 #define AXP152_GPIO0_CTRL 0x90 161 #define AXP152_GPIO1_CTRL 0x91 162 #define AXP152_GPIO2_CTRL 0x92 163 #define AXP152_GPIO3_CTRL 0x93 164 #define AXP152_LDOGPIO2_V_OUT 0x96 165 #define AXP152_GPIO_INPUT 0x97 166 #define AXP152_PWM0_FREQ_X 0x98 167 #define AXP152_PWM0_FREQ_Y 0x99 168 #define AXP152_PWM0_DUTY_CYCLE 0x9a 169 #define AXP152_PWM1_FREQ_X 0x9b 170 #define AXP152_PWM1_FREQ_Y 0x9c 171 #define AXP152_PWM1_DUTY_CYCLE 0x9d 172 173 #define AXP20X_GPIO0_CTRL 0x90 174 #define AXP20X_LDO5_V_OUT 0x91 175 #define AXP20X_GPIO1_CTRL 0x92 176 #define AXP20X_GPIO2_CTRL 0x93 177 #define AXP20X_GPIO20_SS 0x94 178 #define AXP20X_GPIO3_CTRL 0x95 179 180 #define AXP22X_LDO_IO0_V_OUT 0x91 181 #define AXP22X_LDO_IO1_V_OUT 0x93 182 #define AXP22X_GPIO_STATE 0x94 183 #define AXP22X_GPIO_PULL_DOWN 0x95 184 185 /* Battery */ 186 #define AXP20X_CHRG_CC_31_24 0xb0 187 #define AXP20X_CHRG_CC_23_16 0xb1 188 #define AXP20X_CHRG_CC_15_8 0xb2 189 #define AXP20X_CHRG_CC_7_0 0xb3 190 #define AXP20X_DISCHRG_CC_31_24 0xb4 191 #define AXP20X_DISCHRG_CC_23_16 0xb5 192 #define AXP20X_DISCHRG_CC_15_8 0xb6 193 #define AXP20X_DISCHRG_CC_7_0 0xb7 194 #define AXP20X_CC_CTRL 0xb8 195 #define AXP20X_FG_RES 0xb9 196 197 /* OCV */ 198 #define AXP20X_RDC_H 0xba 199 #define AXP20X_RDC_L 0xbb 200 #define AXP20X_OCV(m) (0xc0 + (m)) 201 #define AXP20X_OCV_MAX 0xf 202 203 /* AXP22X specific registers */ 204 #define AXP22X_BATLOW_THRES1 0xe6 205 206 /* AXP288 specific registers */ 207 #define AXP288_PMIC_ADC_H 0x56 208 #define AXP288_PMIC_ADC_L 0x57 209 #define AXP288_ADC_TS_PIN_CTRL 0x84 210 #define AXP288_PMIC_ADC_EN 0x84 211 212 /* Fuel Gauge */ 213 #define AXP288_FG_RDC1_REG 0xba 214 #define AXP288_FG_RDC0_REG 0xbb 215 #define AXP288_FG_OCVH_REG 0xbc 216 #define AXP288_FG_OCVL_REG 0xbd 217 #define AXP288_FG_OCV_CURVE_REG 0xc0 218 #define AXP288_FG_DES_CAP1_REG 0xe0 219 #define AXP288_FG_DES_CAP0_REG 0xe1 220 #define AXP288_FG_CC_MTR1_REG 0xe2 221 #define AXP288_FG_CC_MTR0_REG 0xe3 222 #define AXP288_FG_OCV_CAP_REG 0xe4 223 #define AXP288_FG_CC_CAP_REG 0xe5 224 #define AXP288_FG_LOW_CAP_REG 0xe6 225 #define AXP288_FG_TUNE0 0xe8 226 #define AXP288_FG_TUNE1 0xe9 227 #define AXP288_FG_TUNE2 0xea 228 #define AXP288_FG_TUNE3 0xeb 229 #define AXP288_FG_TUNE4 0xec 230 #define AXP288_FG_TUNE5 0xed 231 232 /* Regulators IDs */ 233 enum { 234 AXP20X_LDO1 = 0, 235 AXP20X_LDO2, 236 AXP20X_LDO3, 237 AXP20X_LDO4, 238 AXP20X_LDO5, 239 AXP20X_DCDC2, 240 AXP20X_DCDC3, 241 AXP20X_REG_ID_MAX, 242 }; 243 244 enum { 245 AXP22X_DCDC1 = 0, 246 AXP22X_DCDC2, 247 AXP22X_DCDC3, 248 AXP22X_DCDC4, 249 AXP22X_DCDC5, 250 AXP22X_DC1SW, 251 AXP22X_DC5LDO, 252 AXP22X_ALDO1, 253 AXP22X_ALDO2, 254 AXP22X_ALDO3, 255 AXP22X_ELDO1, 256 AXP22X_ELDO2, 257 AXP22X_ELDO3, 258 AXP22X_DLDO1, 259 AXP22X_DLDO2, 260 AXP22X_DLDO3, 261 AXP22X_DLDO4, 262 AXP22X_RTC_LDO, 263 AXP22X_LDO_IO0, 264 AXP22X_LDO_IO1, 265 AXP22X_REG_ID_MAX, 266 }; 267 268 enum { 269 AXP809_DCDC1 = 0, 270 AXP809_DCDC2, 271 AXP809_DCDC3, 272 AXP809_DCDC4, 273 AXP809_DCDC5, 274 AXP809_DC1SW, 275 AXP809_DC5LDO, 276 AXP809_ALDO1, 277 AXP809_ALDO2, 278 AXP809_ALDO3, 279 AXP809_ELDO1, 280 AXP809_ELDO2, 281 AXP809_ELDO3, 282 AXP809_DLDO1, 283 AXP809_DLDO2, 284 AXP809_RTC_LDO, 285 AXP809_LDO_IO0, 286 AXP809_LDO_IO1, 287 AXP809_SW, 288 AXP809_REG_ID_MAX, 289 }; 290 291 /* IRQs */ 292 enum { 293 AXP152_IRQ_LDO0IN_CONNECT = 1, 294 AXP152_IRQ_LDO0IN_REMOVAL, 295 AXP152_IRQ_ALDO0IN_CONNECT, 296 AXP152_IRQ_ALDO0IN_REMOVAL, 297 AXP152_IRQ_DCDC1_V_LOW, 298 AXP152_IRQ_DCDC2_V_LOW, 299 AXP152_IRQ_DCDC3_V_LOW, 300 AXP152_IRQ_DCDC4_V_LOW, 301 AXP152_IRQ_PEK_SHORT, 302 AXP152_IRQ_PEK_LONG, 303 AXP152_IRQ_TIMER, 304 AXP152_IRQ_PEK_RIS_EDGE, 305 AXP152_IRQ_PEK_FAL_EDGE, 306 AXP152_IRQ_GPIO3_INPUT, 307 AXP152_IRQ_GPIO2_INPUT, 308 AXP152_IRQ_GPIO1_INPUT, 309 AXP152_IRQ_GPIO0_INPUT, 310 }; 311 312 enum { 313 AXP20X_IRQ_ACIN_OVER_V = 1, 314 AXP20X_IRQ_ACIN_PLUGIN, 315 AXP20X_IRQ_ACIN_REMOVAL, 316 AXP20X_IRQ_VBUS_OVER_V, 317 AXP20X_IRQ_VBUS_PLUGIN, 318 AXP20X_IRQ_VBUS_REMOVAL, 319 AXP20X_IRQ_VBUS_V_LOW, 320 AXP20X_IRQ_BATT_PLUGIN, 321 AXP20X_IRQ_BATT_REMOVAL, 322 AXP20X_IRQ_BATT_ENT_ACT_MODE, 323 AXP20X_IRQ_BATT_EXIT_ACT_MODE, 324 AXP20X_IRQ_CHARG, 325 AXP20X_IRQ_CHARG_DONE, 326 AXP20X_IRQ_BATT_TEMP_HIGH, 327 AXP20X_IRQ_BATT_TEMP_LOW, 328 AXP20X_IRQ_DIE_TEMP_HIGH, 329 AXP20X_IRQ_CHARG_I_LOW, 330 AXP20X_IRQ_DCDC1_V_LONG, 331 AXP20X_IRQ_DCDC2_V_LONG, 332 AXP20X_IRQ_DCDC3_V_LONG, 333 AXP20X_IRQ_PEK_SHORT = 22, 334 AXP20X_IRQ_PEK_LONG, 335 AXP20X_IRQ_N_OE_PWR_ON, 336 AXP20X_IRQ_N_OE_PWR_OFF, 337 AXP20X_IRQ_VBUS_VALID, 338 AXP20X_IRQ_VBUS_NOT_VALID, 339 AXP20X_IRQ_VBUS_SESS_VALID, 340 AXP20X_IRQ_VBUS_SESS_END, 341 AXP20X_IRQ_LOW_PWR_LVL1, 342 AXP20X_IRQ_LOW_PWR_LVL2, 343 AXP20X_IRQ_TIMER, 344 AXP20X_IRQ_PEK_RIS_EDGE, 345 AXP20X_IRQ_PEK_FAL_EDGE, 346 AXP20X_IRQ_GPIO3_INPUT, 347 AXP20X_IRQ_GPIO2_INPUT, 348 AXP20X_IRQ_GPIO1_INPUT, 349 AXP20X_IRQ_GPIO0_INPUT, 350 }; 351 352 enum axp22x_irqs { 353 AXP22X_IRQ_ACIN_OVER_V = 1, 354 AXP22X_IRQ_ACIN_PLUGIN, 355 AXP22X_IRQ_ACIN_REMOVAL, 356 AXP22X_IRQ_VBUS_OVER_V, 357 AXP22X_IRQ_VBUS_PLUGIN, 358 AXP22X_IRQ_VBUS_REMOVAL, 359 AXP22X_IRQ_VBUS_V_LOW, 360 AXP22X_IRQ_BATT_PLUGIN, 361 AXP22X_IRQ_BATT_REMOVAL, 362 AXP22X_IRQ_BATT_ENT_ACT_MODE, 363 AXP22X_IRQ_BATT_EXIT_ACT_MODE, 364 AXP22X_IRQ_CHARG, 365 AXP22X_IRQ_CHARG_DONE, 366 AXP22X_IRQ_BATT_TEMP_HIGH, 367 AXP22X_IRQ_BATT_TEMP_LOW, 368 AXP22X_IRQ_DIE_TEMP_HIGH, 369 AXP22X_IRQ_PEK_SHORT, 370 AXP22X_IRQ_PEK_LONG, 371 AXP22X_IRQ_LOW_PWR_LVL1, 372 AXP22X_IRQ_LOW_PWR_LVL2, 373 AXP22X_IRQ_TIMER, 374 AXP22X_IRQ_PEK_RIS_EDGE, 375 AXP22X_IRQ_PEK_FAL_EDGE, 376 AXP22X_IRQ_GPIO1_INPUT, 377 AXP22X_IRQ_GPIO0_INPUT, 378 }; 379 380 enum axp288_irqs { 381 AXP288_IRQ_VBUS_FALL = 2, 382 AXP288_IRQ_VBUS_RISE, 383 AXP288_IRQ_OV, 384 AXP288_IRQ_FALLING_ALT, 385 AXP288_IRQ_RISING_ALT, 386 AXP288_IRQ_OV_ALT, 387 AXP288_IRQ_DONE = 10, 388 AXP288_IRQ_CHARGING, 389 AXP288_IRQ_SAFE_QUIT, 390 AXP288_IRQ_SAFE_ENTER, 391 AXP288_IRQ_ABSENT, 392 AXP288_IRQ_APPEND, 393 AXP288_IRQ_QWBTU, 394 AXP288_IRQ_WBTU, 395 AXP288_IRQ_QWBTO, 396 AXP288_IRQ_WBTO, 397 AXP288_IRQ_QCBTU, 398 AXP288_IRQ_CBTU, 399 AXP288_IRQ_QCBTO, 400 AXP288_IRQ_CBTO, 401 AXP288_IRQ_WL2, 402 AXP288_IRQ_WL1, 403 AXP288_IRQ_GPADC, 404 AXP288_IRQ_OT = 31, 405 AXP288_IRQ_GPIO0, 406 AXP288_IRQ_GPIO1, 407 AXP288_IRQ_POKO, 408 AXP288_IRQ_POKL, 409 AXP288_IRQ_POKS, 410 AXP288_IRQ_POKN, 411 AXP288_IRQ_POKP, 412 AXP288_IRQ_TIMER, 413 AXP288_IRQ_MV_CHNG, 414 AXP288_IRQ_BC_USB_CHNG, 415 }; 416 417 enum axp809_irqs { 418 AXP809_IRQ_ACIN_OVER_V = 1, 419 AXP809_IRQ_ACIN_PLUGIN, 420 AXP809_IRQ_ACIN_REMOVAL, 421 AXP809_IRQ_VBUS_OVER_V, 422 AXP809_IRQ_VBUS_PLUGIN, 423 AXP809_IRQ_VBUS_REMOVAL, 424 AXP809_IRQ_VBUS_V_LOW, 425 AXP809_IRQ_BATT_PLUGIN, 426 AXP809_IRQ_BATT_REMOVAL, 427 AXP809_IRQ_BATT_ENT_ACT_MODE, 428 AXP809_IRQ_BATT_EXIT_ACT_MODE, 429 AXP809_IRQ_CHARG, 430 AXP809_IRQ_CHARG_DONE, 431 AXP809_IRQ_BATT_CHG_TEMP_HIGH, 432 AXP809_IRQ_BATT_CHG_TEMP_HIGH_END, 433 AXP809_IRQ_BATT_CHG_TEMP_LOW, 434 AXP809_IRQ_BATT_CHG_TEMP_LOW_END, 435 AXP809_IRQ_BATT_ACT_TEMP_HIGH, 436 AXP809_IRQ_BATT_ACT_TEMP_HIGH_END, 437 AXP809_IRQ_BATT_ACT_TEMP_LOW, 438 AXP809_IRQ_BATT_ACT_TEMP_LOW_END, 439 AXP809_IRQ_DIE_TEMP_HIGH, 440 AXP809_IRQ_LOW_PWR_LVL1, 441 AXP809_IRQ_LOW_PWR_LVL2, 442 AXP809_IRQ_TIMER, 443 AXP809_IRQ_PEK_RIS_EDGE, 444 AXP809_IRQ_PEK_FAL_EDGE, 445 AXP809_IRQ_PEK_SHORT, 446 AXP809_IRQ_PEK_LONG, 447 AXP809_IRQ_PEK_OVER_OFF, 448 AXP809_IRQ_GPIO1_INPUT, 449 AXP809_IRQ_GPIO0_INPUT, 450 }; 451 452 #define AXP288_TS_ADC_H 0x58 453 #define AXP288_TS_ADC_L 0x59 454 #define AXP288_GP_ADC_H 0x5a 455 #define AXP288_GP_ADC_L 0x5b 456 457 struct axp20x_dev { 458 struct device *dev; 459 int irq; 460 struct regmap *regmap; 461 struct regmap_irq_chip_data *regmap_irqc; 462 long variant; 463 int nr_cells; 464 struct mfd_cell *cells; 465 const struct regmap_config *regmap_cfg; 466 const struct regmap_irq_chip *regmap_irq_chip; 467 }; 468 469 #define BATTID_LEN 64 470 #define OCV_CURVE_SIZE 32 471 #define MAX_THERM_CURVE_SIZE 25 472 #define PD_DEF_MIN_TEMP 0 473 #define PD_DEF_MAX_TEMP 55 474 475 struct axp20x_fg_pdata { 476 char battid[BATTID_LEN + 1]; 477 int design_cap; 478 int min_volt; 479 int max_volt; 480 int max_temp; 481 int min_temp; 482 int cap1; 483 int cap0; 484 int rdc1; 485 int rdc0; 486 int ocv_curve[OCV_CURVE_SIZE]; 487 int tcsz; 488 int thermistor_curve[MAX_THERM_CURVE_SIZE][2]; 489 }; 490 491 struct axp20x_chrg_pdata { 492 int max_cc; 493 int max_cv; 494 int def_cc; 495 int def_cv; 496 }; 497 498 struct axp288_extcon_pdata { 499 /* GPIO pin control to switch D+/D- lines b/w PMIC and SOC */ 500 struct gpio_desc *gpio_mux_cntl; 501 }; 502 503 /* generic helper function for reading 9-16 bit wide regs */ 504 static inline int axp20x_read_variable_width(struct regmap *regmap, 505 unsigned int reg, unsigned int width) 506 { 507 unsigned int reg_val, result; 508 int err; 509 510 err = regmap_read(regmap, reg, ®_val); 511 if (err) 512 return err; 513 514 result = reg_val << (width - 8); 515 516 err = regmap_read(regmap, reg + 1, ®_val); 517 if (err) 518 return err; 519 520 result |= reg_val; 521 522 return result; 523 } 524 525 /** 526 * axp20x_match_device(): Setup axp20x variant related fields 527 * 528 * @axp20x: axp20x device to setup (.dev field must be set) 529 * @dev: device associated with this axp20x device 530 * 531 * This lets the axp20x core configure the mfd cells and register maps 532 * for later use. 533 */ 534 int axp20x_match_device(struct axp20x_dev *axp20x); 535 536 /** 537 * axp20x_device_probe(): Probe a configured axp20x device 538 * 539 * @axp20x: axp20x device to probe (must be configured) 540 * 541 * This function lets the axp20x core register the axp20x mfd devices 542 * and irqchip. The axp20x device passed in must be fully configured 543 * with axp20x_match_device, its irq set, and regmap created. 544 */ 545 int axp20x_device_probe(struct axp20x_dev *axp20x); 546 547 /** 548 * axp20x_device_probe(): Remove a axp20x device 549 * 550 * @axp20x: axp20x device to remove 551 * 552 * This tells the axp20x core to remove the associated mfd devices 553 */ 554 int axp20x_device_remove(struct axp20x_dev *axp20x); 555 556 #endif /* __LINUX_MFD_AXP20X_H */ 557