1/* 2 * include/linux/mfd/wm831x/core.h -- Core interface for WM831x 3 * 4 * Copyright 2009 Wolfson Microelectronics PLC. 5 * 6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 */ 14 15#ifndef __MFD_WM831X_CORE_H__ 16#define __MFD_WM831X_CORE_H__ 17 18#include <linux/completion.h> 19#include <linux/interrupt.h> 20#include <linux/irqdomain.h> 21#include <linux/list.h> 22#include <linux/regmap.h> 23#include <linux/mfd/wm831x/auxadc.h> 24 25/* 26 * Register values. 27 */ 28#define WM831X_RESET_ID 0x00 29#define WM831X_REVISION 0x01 30#define WM831X_PARENT_ID 0x4000 31#define WM831X_SYSVDD_CONTROL 0x4001 32#define WM831X_THERMAL_MONITORING 0x4002 33#define WM831X_POWER_STATE 0x4003 34#define WM831X_WATCHDOG 0x4004 35#define WM831X_ON_PIN_CONTROL 0x4005 36#define WM831X_RESET_CONTROL 0x4006 37#define WM831X_CONTROL_INTERFACE 0x4007 38#define WM831X_SECURITY_KEY 0x4008 39#define WM831X_SOFTWARE_SCRATCH 0x4009 40#define WM831X_OTP_CONTROL 0x400A 41#define WM831X_GPIO_LEVEL 0x400C 42#define WM831X_SYSTEM_STATUS 0x400D 43#define WM831X_ON_SOURCE 0x400E 44#define WM831X_OFF_SOURCE 0x400F 45#define WM831X_SYSTEM_INTERRUPTS 0x4010 46#define WM831X_INTERRUPT_STATUS_1 0x4011 47#define WM831X_INTERRUPT_STATUS_2 0x4012 48#define WM831X_INTERRUPT_STATUS_3 0x4013 49#define WM831X_INTERRUPT_STATUS_4 0x4014 50#define WM831X_INTERRUPT_STATUS_5 0x4015 51#define WM831X_IRQ_CONFIG 0x4017 52#define WM831X_SYSTEM_INTERRUPTS_MASK 0x4018 53#define WM831X_INTERRUPT_STATUS_1_MASK 0x4019 54#define WM831X_INTERRUPT_STATUS_2_MASK 0x401A 55#define WM831X_INTERRUPT_STATUS_3_MASK 0x401B 56#define WM831X_INTERRUPT_STATUS_4_MASK 0x401C 57#define WM831X_INTERRUPT_STATUS_5_MASK 0x401D 58#define WM831X_RTC_WRITE_COUNTER 0x4020 59#define WM831X_RTC_TIME_1 0x4021 60#define WM831X_RTC_TIME_2 0x4022 61#define WM831X_RTC_ALARM_1 0x4023 62#define WM831X_RTC_ALARM_2 0x4024 63#define WM831X_RTC_CONTROL 0x4025 64#define WM831X_RTC_TRIM 0x4026 65#define WM831X_TOUCH_CONTROL_1 0x4028 66#define WM831X_TOUCH_CONTROL_2 0x4029 67#define WM831X_TOUCH_DATA_X 0x402A 68#define WM831X_TOUCH_DATA_Y 0x402B 69#define WM831X_TOUCH_DATA_Z 0x402C 70#define WM831X_AUXADC_DATA 0x402D 71#define WM831X_AUXADC_CONTROL 0x402E 72#define WM831X_AUXADC_SOURCE 0x402F 73#define WM831X_COMPARATOR_CONTROL 0x4030 74#define WM831X_COMPARATOR_1 0x4031 75#define WM831X_COMPARATOR_2 0x4032 76#define WM831X_COMPARATOR_3 0x4033 77#define WM831X_COMPARATOR_4 0x4034 78#define WM831X_GPIO1_CONTROL 0x4038 79#define WM831X_GPIO2_CONTROL 0x4039 80#define WM831X_GPIO3_CONTROL 0x403A 81#define WM831X_GPIO4_CONTROL 0x403B 82#define WM831X_GPIO5_CONTROL 0x403C 83#define WM831X_GPIO6_CONTROL 0x403D 84#define WM831X_GPIO7_CONTROL 0x403E 85#define WM831X_GPIO8_CONTROL 0x403F 86#define WM831X_GPIO9_CONTROL 0x4040 87#define WM831X_GPIO10_CONTROL 0x4041 88#define WM831X_GPIO11_CONTROL 0x4042 89#define WM831X_GPIO12_CONTROL 0x4043 90#define WM831X_GPIO13_CONTROL 0x4044 91#define WM831X_GPIO14_CONTROL 0x4045 92#define WM831X_GPIO15_CONTROL 0x4046 93#define WM831X_GPIO16_CONTROL 0x4047 94#define WM831X_CHARGER_CONTROL_1 0x4048 95#define WM831X_CHARGER_CONTROL_2 0x4049 96#define WM831X_CHARGER_STATUS 0x404A 97#define WM831X_BACKUP_CHARGER_CONTROL 0x404B 98#define WM831X_STATUS_LED_1 0x404C 99#define WM831X_STATUS_LED_2 0x404D 100#define WM831X_CURRENT_SINK_1 0x404E 101#define WM831X_CURRENT_SINK_2 0x404F 102#define WM831X_DCDC_ENABLE 0x4050 103#define WM831X_LDO_ENABLE 0x4051 104#define WM831X_DCDC_STATUS 0x4052 105#define WM831X_LDO_STATUS 0x4053 106#define WM831X_DCDC_UV_STATUS 0x4054 107#define WM831X_LDO_UV_STATUS 0x4055 108#define WM831X_DC1_CONTROL_1 0x4056 109#define WM831X_DC1_CONTROL_2 0x4057 110#define WM831X_DC1_ON_CONFIG 0x4058 111#define WM831X_DC1_SLEEP_CONTROL 0x4059 112#define WM831X_DC1_DVS_CONTROL 0x405A 113#define WM831X_DC2_CONTROL_1 0x405B 114#define WM831X_DC2_CONTROL_2 0x405C 115#define WM831X_DC2_ON_CONFIG 0x405D 116#define WM831X_DC2_SLEEP_CONTROL 0x405E 117#define WM831X_DC2_DVS_CONTROL 0x405F 118#define WM831X_DC3_CONTROL_1 0x4060 119#define WM831X_DC3_CONTROL_2 0x4061 120#define WM831X_DC3_ON_CONFIG 0x4062 121#define WM831X_DC3_SLEEP_CONTROL 0x4063 122#define WM831X_DC4_CONTROL 0x4064 123#define WM831X_DC4_SLEEP_CONTROL 0x4065 124#define WM832X_DC4_SLEEP_CONTROL 0x4067 125#define WM831X_EPE1_CONTROL 0x4066 126#define WM831X_EPE2_CONTROL 0x4067 127#define WM831X_LDO1_CONTROL 0x4068 128#define WM831X_LDO1_ON_CONTROL 0x4069 129#define WM831X_LDO1_SLEEP_CONTROL 0x406A 130#define WM831X_LDO2_CONTROL 0x406B 131#define WM831X_LDO2_ON_CONTROL 0x406C 132#define WM831X_LDO2_SLEEP_CONTROL 0x406D 133#define WM831X_LDO3_CONTROL 0x406E 134#define WM831X_LDO3_ON_CONTROL 0x406F 135#define WM831X_LDO3_SLEEP_CONTROL 0x4070 136#define WM831X_LDO4_CONTROL 0x4071 137#define WM831X_LDO4_ON_CONTROL 0x4072 138#define WM831X_LDO4_SLEEP_CONTROL 0x4073 139#define WM831X_LDO5_CONTROL 0x4074 140#define WM831X_LDO5_ON_CONTROL 0x4075 141#define WM831X_LDO5_SLEEP_CONTROL 0x4076 142#define WM831X_LDO6_CONTROL 0x4077 143#define WM831X_LDO6_ON_CONTROL 0x4078 144#define WM831X_LDO6_SLEEP_CONTROL 0x4079 145#define WM831X_LDO7_CONTROL 0x407A 146#define WM831X_LDO7_ON_CONTROL 0x407B 147#define WM831X_LDO7_SLEEP_CONTROL 0x407C 148#define WM831X_LDO8_CONTROL 0x407D 149#define WM831X_LDO8_ON_CONTROL 0x407E 150#define WM831X_LDO8_SLEEP_CONTROL 0x407F 151#define WM831X_LDO9_CONTROL 0x4080 152#define WM831X_LDO9_ON_CONTROL 0x4081 153#define WM831X_LDO9_SLEEP_CONTROL 0x4082 154#define WM831X_LDO10_CONTROL 0x4083 155#define WM831X_LDO10_ON_CONTROL 0x4084 156#define WM831X_LDO10_SLEEP_CONTROL 0x4085 157#define WM831X_LDO11_ON_CONTROL 0x4087 158#define WM831X_LDO11_SLEEP_CONTROL 0x4088 159#define WM831X_POWER_GOOD_SOURCE_1 0x408E 160#define WM831X_POWER_GOOD_SOURCE_2 0x408F 161#define WM831X_CLOCK_CONTROL_1 0x4090 162#define WM831X_CLOCK_CONTROL_2 0x4091 163#define WM831X_FLL_CONTROL_1 0x4092 164#define WM831X_FLL_CONTROL_2 0x4093 165#define WM831X_FLL_CONTROL_3 0x4094 166#define WM831X_FLL_CONTROL_4 0x4095 167#define WM831X_FLL_CONTROL_5 0x4096 168#define WM831X_UNIQUE_ID_1 0x7800 169#define WM831X_UNIQUE_ID_2 0x7801 170#define WM831X_UNIQUE_ID_3 0x7802 171#define WM831X_UNIQUE_ID_4 0x7803 172#define WM831X_UNIQUE_ID_5 0x7804 173#define WM831X_UNIQUE_ID_6 0x7805 174#define WM831X_UNIQUE_ID_7 0x7806 175#define WM831X_UNIQUE_ID_8 0x7807 176#define WM831X_FACTORY_OTP_ID 0x7808 177#define WM831X_FACTORY_OTP_1 0x7809 178#define WM831X_FACTORY_OTP_2 0x780A 179#define WM831X_FACTORY_OTP_3 0x780B 180#define WM831X_FACTORY_OTP_4 0x780C 181#define WM831X_FACTORY_OTP_5 0x780D 182#define WM831X_CUSTOMER_OTP_ID 0x7810 183#define WM831X_DC1_OTP_CONTROL 0x7811 184#define WM831X_DC2_OTP_CONTROL 0x7812 185#define WM831X_DC3_OTP_CONTROL 0x7813 186#define WM831X_LDO1_2_OTP_CONTROL 0x7814 187#define WM831X_LDO3_4_OTP_CONTROL 0x7815 188#define WM831X_LDO5_6_OTP_CONTROL 0x7816 189#define WM831X_LDO7_8_OTP_CONTROL 0x7817 190#define WM831X_LDO9_10_OTP_CONTROL 0x7818 191#define WM831X_LDO11_EPE_CONTROL 0x7819 192#define WM831X_GPIO1_OTP_CONTROL 0x781A 193#define WM831X_GPIO2_OTP_CONTROL 0x781B 194#define WM831X_GPIO3_OTP_CONTROL 0x781C 195#define WM831X_GPIO4_OTP_CONTROL 0x781D 196#define WM831X_GPIO5_OTP_CONTROL 0x781E 197#define WM831X_GPIO6_OTP_CONTROL 0x781F 198#define WM831X_DBE_CHECK_DATA 0x7827 199 200/* 201 * R0 (0x00) - Reset ID 202 */ 203#define WM831X_CHIP_ID_MASK 0xFFFF /* CHIP_ID - [15:0] */ 204#define WM831X_CHIP_ID_SHIFT 0 /* CHIP_ID - [15:0] */ 205#define WM831X_CHIP_ID_WIDTH 16 /* CHIP_ID - [15:0] */ 206 207/* 208 * R1 (0x01) - Revision 209 */ 210#define WM831X_PARENT_REV_MASK 0xFF00 /* PARENT_REV - [15:8] */ 211#define WM831X_PARENT_REV_SHIFT 8 /* PARENT_REV - [15:8] */ 212#define WM831X_PARENT_REV_WIDTH 8 /* PARENT_REV - [15:8] */ 213#define WM831X_CHILD_REV_MASK 0x00FF /* CHILD_REV - [7:0] */ 214#define WM831X_CHILD_REV_SHIFT 0 /* CHILD_REV - [7:0] */ 215#define WM831X_CHILD_REV_WIDTH 8 /* CHILD_REV - [7:0] */ 216 217/* 218 * R16384 (0x4000) - Parent ID 219 */ 220#define WM831X_PARENT_ID_MASK 0xFFFF /* PARENT_ID - [15:0] */ 221#define WM831X_PARENT_ID_SHIFT 0 /* PARENT_ID - [15:0] */ 222#define WM831X_PARENT_ID_WIDTH 16 /* PARENT_ID - [15:0] */ 223 224/* 225 * R16389 (0x4005) - ON Pin Control 226 */ 227#define WM831X_ON_PIN_SECACT_MASK 0x0300 /* ON_PIN_SECACT - [9:8] */ 228#define WM831X_ON_PIN_SECACT_SHIFT 8 /* ON_PIN_SECACT - [9:8] */ 229#define WM831X_ON_PIN_SECACT_WIDTH 2 /* ON_PIN_SECACT - [9:8] */ 230#define WM831X_ON_PIN_PRIMACT_MASK 0x0030 /* ON_PIN_PRIMACT - [5:4] */ 231#define WM831X_ON_PIN_PRIMACT_SHIFT 4 /* ON_PIN_PRIMACT - [5:4] */ 232#define WM831X_ON_PIN_PRIMACT_WIDTH 2 /* ON_PIN_PRIMACT - [5:4] */ 233#define WM831X_ON_PIN_STS 0x0008 /* ON_PIN_STS */ 234#define WM831X_ON_PIN_STS_MASK 0x0008 /* ON_PIN_STS */ 235#define WM831X_ON_PIN_STS_SHIFT 3 /* ON_PIN_STS */ 236#define WM831X_ON_PIN_STS_WIDTH 1 /* ON_PIN_STS */ 237#define WM831X_ON_PIN_TO_MASK 0x0003 /* ON_PIN_TO - [1:0] */ 238#define WM831X_ON_PIN_TO_SHIFT 0 /* ON_PIN_TO - [1:0] */ 239#define WM831X_ON_PIN_TO_WIDTH 2 /* ON_PIN_TO - [1:0] */ 240 241/* 242 * R16528 (0x4090) - Clock Control 1 243 */ 244#define WM831X_CLKOUT_ENA 0x8000 /* CLKOUT_ENA */ 245#define WM831X_CLKOUT_ENA_MASK 0x8000 /* CLKOUT_ENA */ 246#define WM831X_CLKOUT_ENA_SHIFT 15 /* CLKOUT_ENA */ 247#define WM831X_CLKOUT_ENA_WIDTH 1 /* CLKOUT_ENA */ 248#define WM831X_CLKOUT_OD 0x2000 /* CLKOUT_OD */ 249#define WM831X_CLKOUT_OD_MASK 0x2000 /* CLKOUT_OD */ 250#define WM831X_CLKOUT_OD_SHIFT 13 /* CLKOUT_OD */ 251#define WM831X_CLKOUT_OD_WIDTH 1 /* CLKOUT_OD */ 252#define WM831X_CLKOUT_SLOT_MASK 0x0700 /* CLKOUT_SLOT - [10:8] */ 253#define WM831X_CLKOUT_SLOT_SHIFT 8 /* CLKOUT_SLOT - [10:8] */ 254#define WM831X_CLKOUT_SLOT_WIDTH 3 /* CLKOUT_SLOT - [10:8] */ 255#define WM831X_CLKOUT_SLPSLOT_MASK 0x0070 /* CLKOUT_SLPSLOT - [6:4] */ 256#define WM831X_CLKOUT_SLPSLOT_SHIFT 4 /* CLKOUT_SLPSLOT - [6:4] */ 257#define WM831X_CLKOUT_SLPSLOT_WIDTH 3 /* CLKOUT_SLPSLOT - [6:4] */ 258#define WM831X_CLKOUT_SRC 0x0001 /* CLKOUT_SRC */ 259#define WM831X_CLKOUT_SRC_MASK 0x0001 /* CLKOUT_SRC */ 260#define WM831X_CLKOUT_SRC_SHIFT 0 /* CLKOUT_SRC */ 261#define WM831X_CLKOUT_SRC_WIDTH 1 /* CLKOUT_SRC */ 262 263/* 264 * R16529 (0x4091) - Clock Control 2 265 */ 266#define WM831X_XTAL_INH 0x8000 /* XTAL_INH */ 267#define WM831X_XTAL_INH_MASK 0x8000 /* XTAL_INH */ 268#define WM831X_XTAL_INH_SHIFT 15 /* XTAL_INH */ 269#define WM831X_XTAL_INH_WIDTH 1 /* XTAL_INH */ 270#define WM831X_XTAL_ENA 0x2000 /* XTAL_ENA */ 271#define WM831X_XTAL_ENA_MASK 0x2000 /* XTAL_ENA */ 272#define WM831X_XTAL_ENA_SHIFT 13 /* XTAL_ENA */ 273#define WM831X_XTAL_ENA_WIDTH 1 /* XTAL_ENA */ 274#define WM831X_XTAL_BKUPENA 0x1000 /* XTAL_BKUPENA */ 275#define WM831X_XTAL_BKUPENA_MASK 0x1000 /* XTAL_BKUPENA */ 276#define WM831X_XTAL_BKUPENA_SHIFT 12 /* XTAL_BKUPENA */ 277#define WM831X_XTAL_BKUPENA_WIDTH 1 /* XTAL_BKUPENA */ 278#define WM831X_FLL_AUTO 0x0080 /* FLL_AUTO */ 279#define WM831X_FLL_AUTO_MASK 0x0080 /* FLL_AUTO */ 280#define WM831X_FLL_AUTO_SHIFT 7 /* FLL_AUTO */ 281#define WM831X_FLL_AUTO_WIDTH 1 /* FLL_AUTO */ 282#define WM831X_FLL_AUTO_FREQ_MASK 0x0007 /* FLL_AUTO_FREQ - [2:0] */ 283#define WM831X_FLL_AUTO_FREQ_SHIFT 0 /* FLL_AUTO_FREQ - [2:0] */ 284#define WM831X_FLL_AUTO_FREQ_WIDTH 3 /* FLL_AUTO_FREQ - [2:0] */ 285 286/* 287 * R16530 (0x4092) - FLL Control 1 288 */ 289#define WM831X_FLL_FRAC 0x0004 /* FLL_FRAC */ 290#define WM831X_FLL_FRAC_MASK 0x0004 /* FLL_FRAC */ 291#define WM831X_FLL_FRAC_SHIFT 2 /* FLL_FRAC */ 292#define WM831X_FLL_FRAC_WIDTH 1 /* FLL_FRAC */ 293#define WM831X_FLL_OSC_ENA 0x0002 /* FLL_OSC_ENA */ 294#define WM831X_FLL_OSC_ENA_MASK 0x0002 /* FLL_OSC_ENA */ 295#define WM831X_FLL_OSC_ENA_SHIFT 1 /* FLL_OSC_ENA */ 296#define WM831X_FLL_OSC_ENA_WIDTH 1 /* FLL_OSC_ENA */ 297#define WM831X_FLL_ENA 0x0001 /* FLL_ENA */ 298#define WM831X_FLL_ENA_MASK 0x0001 /* FLL_ENA */ 299#define WM831X_FLL_ENA_SHIFT 0 /* FLL_ENA */ 300#define WM831X_FLL_ENA_WIDTH 1 /* FLL_ENA */ 301 302/* 303 * R16531 (0x4093) - FLL Control 2 304 */ 305#define WM831X_FLL_OUTDIV_MASK 0x3F00 /* FLL_OUTDIV - [13:8] */ 306#define WM831X_FLL_OUTDIV_SHIFT 8 /* FLL_OUTDIV - [13:8] */ 307#define WM831X_FLL_OUTDIV_WIDTH 6 /* FLL_OUTDIV - [13:8] */ 308#define WM831X_FLL_CTRL_RATE_MASK 0x0070 /* FLL_CTRL_RATE - [6:4] */ 309#define WM831X_FLL_CTRL_RATE_SHIFT 4 /* FLL_CTRL_RATE - [6:4] */ 310#define WM831X_FLL_CTRL_RATE_WIDTH 3 /* FLL_CTRL_RATE - [6:4] */ 311#define WM831X_FLL_FRATIO_MASK 0x0007 /* FLL_FRATIO - [2:0] */ 312#define WM831X_FLL_FRATIO_SHIFT 0 /* FLL_FRATIO - [2:0] */ 313#define WM831X_FLL_FRATIO_WIDTH 3 /* FLL_FRATIO - [2:0] */ 314 315/* 316 * R16532 (0x4094) - FLL Control 3 317 */ 318#define WM831X_FLL_K_MASK 0xFFFF /* FLL_K - [15:0] */ 319#define WM831X_FLL_K_SHIFT 0 /* FLL_K - [15:0] */ 320#define WM831X_FLL_K_WIDTH 16 /* FLL_K - [15:0] */ 321 322/* 323 * R16533 (0x4095) - FLL Control 4 324 */ 325#define WM831X_FLL_N_MASK 0x7FE0 /* FLL_N - [14:5] */ 326#define WM831X_FLL_N_SHIFT 5 /* FLL_N - [14:5] */ 327#define WM831X_FLL_N_WIDTH 10 /* FLL_N - [14:5] */ 328#define WM831X_FLL_GAIN_MASK 0x000F /* FLL_GAIN - [3:0] */ 329#define WM831X_FLL_GAIN_SHIFT 0 /* FLL_GAIN - [3:0] */ 330#define WM831X_FLL_GAIN_WIDTH 4 /* FLL_GAIN - [3:0] */ 331 332/* 333 * R16534 (0x4096) - FLL Control 5 334 */ 335#define WM831X_FLL_CLK_REF_DIV_MASK 0x0018 /* FLL_CLK_REF_DIV - [4:3] */ 336#define WM831X_FLL_CLK_REF_DIV_SHIFT 3 /* FLL_CLK_REF_DIV - [4:3] */ 337#define WM831X_FLL_CLK_REF_DIV_WIDTH 2 /* FLL_CLK_REF_DIV - [4:3] */ 338#define WM831X_FLL_CLK_SRC_MASK 0x0003 /* FLL_CLK_SRC - [1:0] */ 339#define WM831X_FLL_CLK_SRC_SHIFT 0 /* FLL_CLK_SRC - [1:0] */ 340#define WM831X_FLL_CLK_SRC_WIDTH 2 /* FLL_CLK_SRC - [1:0] */ 341 342struct regulator_dev; 343struct irq_domain; 344 345#define WM831X_NUM_IRQ_REGS 5 346#define WM831X_NUM_GPIO_REGS 16 347 348enum wm831x_parent { 349 WM8310 = 0x8310, 350 WM8311 = 0x8311, 351 WM8312 = 0x8312, 352 WM8320 = 0x8320, 353 WM8321 = 0x8321, 354 WM8325 = 0x8325, 355 WM8326 = 0x8326, 356}; 357 358struct wm831x; 359 360typedef int (*wm831x_auxadc_read_fn)(struct wm831x *wm831x, 361 enum wm831x_auxadc input); 362 363struct wm831x { 364 struct mutex io_lock; 365 366 struct device *dev; 367 368 struct regmap *regmap; 369 370 int irq; /* Our chip IRQ */ 371 struct mutex irq_lock; 372 struct irq_domain *irq_domain; 373 int irq_masks_cur[WM831X_NUM_IRQ_REGS]; /* Currently active value */ 374 int irq_masks_cache[WM831X_NUM_IRQ_REGS]; /* Cached hardware value */ 375 376 bool soft_shutdown; 377 378 /* Chip revision based flags */ 379 unsigned has_gpio_ena:1; /* Has GPIO enable bit */ 380 unsigned has_cs_sts:1; /* Has current sink status bit */ 381 unsigned charger_irq_wake:1; /* Are charger IRQs a wake source? */ 382 383 int num_gpio; 384 385 /* Used by the interrupt controller code to post writes */ 386 int gpio_update[WM831X_NUM_GPIO_REGS]; 387 bool gpio_level_high[WM831X_NUM_GPIO_REGS]; 388 bool gpio_level_low[WM831X_NUM_GPIO_REGS]; 389 390 struct mutex auxadc_lock; 391 struct list_head auxadc_pending; 392 u16 auxadc_active; 393 wm831x_auxadc_read_fn auxadc_read; 394 395 /* The WM831x has a security key blocking access to certain 396 * registers. The mutex is taken by the accessors for locking 397 * and unlocking the security key, locked is used to fail 398 * writes if the lock is held. 399 */ 400 struct mutex key_lock; 401 unsigned int locked:1; 402}; 403 404/* Device I/O API */ 405int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg); 406int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg, 407 unsigned short val); 408void wm831x_reg_lock(struct wm831x *wm831x); 409int wm831x_reg_unlock(struct wm831x *wm831x); 410int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg, 411 unsigned short mask, unsigned short val); 412int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg, 413 int count, u16 *buf); 414 415int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq); 416void wm831x_device_exit(struct wm831x *wm831x); 417int wm831x_device_suspend(struct wm831x *wm831x); 418void wm831x_device_shutdown(struct wm831x *wm831x); 419int wm831x_irq_init(struct wm831x *wm831x, int irq); 420void wm831x_irq_exit(struct wm831x *wm831x); 421void wm831x_auxadc_init(struct wm831x *wm831x); 422 423static inline int wm831x_irq(struct wm831x *wm831x, int irq) 424{ 425 return irq_create_mapping(wm831x->irq_domain, irq); 426} 427 428extern struct regmap_config wm831x_regmap_config; 429 430#endif 431