git.oblomov.eu Git - linux-2.6/blob - drivers/mfd/wm8350-core.c

   1 /*
   2  * wm8350-core.c  --  Device access for Wolfson WM8350
   3  *
   4  * Copyright 2007, 2008 Wolfson Microelectronics PLC.
   5  *
   6  * Author: Liam Girdwood, Mark Brown
   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 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/bug.h>
  19 #include <linux/device.h>
  20 #include <linux/delay.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/workqueue.h>
  23
  24 #include <linux/mfd/wm8350/core.h>
  25 #include <linux/mfd/wm8350/audio.h>
  26 #include <linux/mfd/wm8350/comparator.h>
  27 #include <linux/mfd/wm8350/gpio.h>
  28 #include <linux/mfd/wm8350/pmic.h>
  29 #include <linux/mfd/wm8350/rtc.h>
  30 #include <linux/mfd/wm8350/supply.h>
  31 #include <linux/mfd/wm8350/wdt.h>
  32
  33 #define WM8350_UNLOCK_KEY               0x0013
  34 #define WM8350_LOCK_KEY                 0x0000
  35
  36 #define WM8350_CLOCK_CONTROL_1          0x28
  37 #define WM8350_AIF_TEST                 0x74
  38
  39 /* debug */
  40 #define WM8350_BUS_DEBUG 0
  41 #if WM8350_BUS_DEBUG
  42 #define dump(regs, src) do { \
  43         int i_; \
  44         u16 *src_ = src; \
  45         printk(KERN_DEBUG); \
  46         for (i_ = 0; i_ < regs; i_++) \
  47                 printk(" 0x%4.4x", *src_++); \
  48         printk("\n"); \
  49 } while (0);
  50 #else
  51 #define dump(bytes, src)
  52 #endif
  53
  54 #define WM8350_LOCK_DEBUG 0
  55 #if WM8350_LOCK_DEBUG
  56 #define ldbg(format, arg...) printk(format, ## arg)
  57 #else
  58 #define ldbg(format, arg...)
  59 #endif
  60
  61 /*
  62  * WM8350 Device IO
  63  */
  64 static DEFINE_MUTEX(io_mutex);
  65 static DEFINE_MUTEX(reg_lock_mutex);
  66 static DEFINE_MUTEX(auxadc_mutex);
  67
  68 /* Perform a physical read from the device.
  69  */
  70 static int wm8350_phys_read(struct wm8350 *wm8350, u8 reg, int num_regs,
  71                             u16 *dest)
  72 {
  73         int i, ret;
  74         int bytes = num_regs * 2;
  75
  76         dev_dbg(wm8350->dev, "volatile read\n");
  77         ret = wm8350->read_dev(wm8350, reg, bytes, (char *)dest);
  78
  79         for (i = reg; i < reg + num_regs; i++) {
  80                 /* Cache is CPU endian */
  81                 dest[i - reg] = be16_to_cpu(dest[i - reg]);
  82
  83                 /* Satisfy non-volatile bits from cache */
  84                 dest[i - reg] &= wm8350_reg_io_map[i].vol;
  85                 dest[i - reg] |= wm8350->reg_cache[i];
  86
  87                 /* Mask out non-readable bits */
  88                 dest[i - reg] &= wm8350_reg_io_map[i].readable;
  89         }
  90
  91         dump(num_regs, dest);
  92
  93         return ret;
  94 }
  95
  96 static int wm8350_read(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *dest)
  97 {
  98         int i;
  99         int end = reg + num_regs;
 100         int ret = 0;
 101         int bytes = num_regs * 2;
 102
 103         if (wm8350->read_dev == NULL)
 104                 return -ENODEV;
 105
 106         if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) {
 107                 dev_err(wm8350->dev, "invalid reg %x\n",
 108                         reg + num_regs - 1);
 109                 return -EINVAL;
 110         }
 111
 112         dev_dbg(wm8350->dev,
 113                 "%s R%d(0x%2.2x) %d regs\n", __func__, reg, reg, num_regs);
 114
 115 #if WM8350_BUS_DEBUG
 116         /* we can _safely_ read any register, but warn if read not supported */
 117         for (i = reg; i < end; i++) {
 118                 if (!wm8350_reg_io_map[i].readable)
 119                         dev_warn(wm8350->dev,
 120                                 "reg R%d is not readable\n", i);
 121         }
 122 #endif
 123
 124         /* if any volatile registers are required, then read back all */
 125         for (i = reg; i < end; i++)
 126                 if (wm8350_reg_io_map[i].vol)
 127                         return wm8350_phys_read(wm8350, reg, num_regs, dest);
 128
 129         /* no volatiles, then cache is good */
 130         dev_dbg(wm8350->dev, "cache read\n");
 131         memcpy(dest, &wm8350->reg_cache[reg], bytes);
 132         dump(num_regs, dest);
 133         return ret;
 134 }
 135
 136 static inline int is_reg_locked(struct wm8350 *wm8350, u8 reg)
 137 {
 138         if (reg == WM8350_SECURITY ||
 139             wm8350->reg_cache[WM8350_SECURITY] == WM8350_UNLOCK_KEY)
 140                 return 0;
 141
 142         if ((reg == WM8350_GPIO_CONFIGURATION_I_O) ||
 143             (reg >= WM8350_GPIO_FUNCTION_SELECT_1 &&
 144              reg <= WM8350_GPIO_FUNCTION_SELECT_4) ||
 145             (reg >= WM8350_BATTERY_CHARGER_CONTROL_1 &&
 146              reg <= WM8350_BATTERY_CHARGER_CONTROL_3))
 147                 return 1;
 148         return 0;
 149 }
 150
 151 static int wm8350_write(struct wm8350 *wm8350, u8 reg, int num_regs, u16 *src)
 152 {
 153         int i;
 154         int end = reg + num_regs;
 155         int bytes = num_regs * 2;
 156
 157         if (wm8350->write_dev == NULL)
 158                 return -ENODEV;
 159
 160         if ((reg + num_regs - 1) > WM8350_MAX_REGISTER) {
 161                 dev_err(wm8350->dev, "invalid reg %x\n",
 162                         reg + num_regs - 1);
 163                 return -EINVAL;
 164         }
 165
 166         /* it's generally not a good idea to write to RO or locked registers */
 167         for (i = reg; i < end; i++) {
 168                 if (!wm8350_reg_io_map[i].writable) {
 169                         dev_err(wm8350->dev,
 170                                 "attempted write to read only reg R%d\n", i);
 171                         return -EINVAL;
 172                 }
 173
 174                 if (is_reg_locked(wm8350, i)) {
 175                         dev_err(wm8350->dev,
 176                                "attempted write to locked reg R%d\n", i);
 177                         return -EINVAL;
 178                 }
 179
 180                 src[i - reg] &= wm8350_reg_io_map[i].writable;
 181
 182                 wm8350->reg_cache[i] =
 183                         (wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable)
 184                         | src[i - reg];
 185
 186                 src[i - reg] = cpu_to_be16(src[i - reg]);
 187         }
 188
 189         /* Actually write it out */
 190         return wm8350->write_dev(wm8350, reg, bytes, (char *)src);
 191 }
 192
 193 /*
 194  * Safe read, modify, write methods
 195  */
 196 int wm8350_clear_bits(struct wm8350 *wm8350, u16 reg, u16 mask)
 197 {
 198         u16 data;
 199         int err;
 200
 201         mutex_lock(&io_mutex);
 202         err = wm8350_read(wm8350, reg, 1, &data);
 203         if (err) {
 204                 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
 205                 goto out;
 206         }
 207
 208         data &= ~mask;
 209         err = wm8350_write(wm8350, reg, 1, &data);
 210         if (err)
 211                 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
 212 out:
 213         mutex_unlock(&io_mutex);
 214         return err;
 215 }
 216 EXPORT_SYMBOL_GPL(wm8350_clear_bits);
 217
 218 int wm8350_set_bits(struct wm8350 *wm8350, u16 reg, u16 mask)
 219 {
 220         u16 data;
 221         int err;
 222
 223         mutex_lock(&io_mutex);
 224         err = wm8350_read(wm8350, reg, 1, &data);
 225         if (err) {
 226                 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
 227                 goto out;
 228         }
 229
 230         data |= mask;
 231         err = wm8350_write(wm8350, reg, 1, &data);
 232         if (err)
 233                 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
 234 out:
 235         mutex_unlock(&io_mutex);
 236         return err;
 237 }
 238 EXPORT_SYMBOL_GPL(wm8350_set_bits);
 239
 240 u16 wm8350_reg_read(struct wm8350 *wm8350, int reg)
 241 {
 242         u16 data;
 243         int err;
 244
 245         mutex_lock(&io_mutex);
 246         err = wm8350_read(wm8350, reg, 1, &data);
 247         if (err)
 248                 dev_err(wm8350->dev, "read from reg R%d failed\n", reg);
 249
 250         mutex_unlock(&io_mutex);
 251         return data;
 252 }
 253 EXPORT_SYMBOL_GPL(wm8350_reg_read);
 254
 255 int wm8350_reg_write(struct wm8350 *wm8350, int reg, u16 val)
 256 {
 257         int ret;
 258         u16 data = val;
 259
 260         mutex_lock(&io_mutex);
 261         ret = wm8350_write(wm8350, reg, 1, &data);
 262         if (ret)
 263                 dev_err(wm8350->dev, "write to reg R%d failed\n", reg);
 264         mutex_unlock(&io_mutex);
 265         return ret;
 266 }
 267 EXPORT_SYMBOL_GPL(wm8350_reg_write);
 268
 269 int wm8350_block_read(struct wm8350 *wm8350, int start_reg, int regs,
 270                       u16 *dest)
 271 {
 272         int err = 0;
 273
 274         mutex_lock(&io_mutex);
 275         err = wm8350_read(wm8350, start_reg, regs, dest);
 276         if (err)
 277                 dev_err(wm8350->dev, "block read starting from R%d failed\n",
 278                         start_reg);
 279         mutex_unlock(&io_mutex);
 280         return err;
 281 }
 282 EXPORT_SYMBOL_GPL(wm8350_block_read);
 283
 284 int wm8350_block_write(struct wm8350 *wm8350, int start_reg, int regs,
 285                        u16 *src)
 286 {
 287         int ret = 0;
 288
 289         mutex_lock(&io_mutex);
 290         ret = wm8350_write(wm8350, start_reg, regs, src);
 291         if (ret)
 292                 dev_err(wm8350->dev, "block write starting at R%d failed\n",
 293                         start_reg);
 294         mutex_unlock(&io_mutex);
 295         return ret;
 296 }
 297 EXPORT_SYMBOL_GPL(wm8350_block_write);
 298
 299 int wm8350_reg_lock(struct wm8350 *wm8350)
 300 {
 301         u16 key = WM8350_LOCK_KEY;
 302         int ret;
 303
 304         ldbg(__func__);
 305         mutex_lock(&io_mutex);
 306         ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key);
 307         if (ret)
 308                 dev_err(wm8350->dev, "lock failed\n");
 309         mutex_unlock(&io_mutex);
 310         return ret;
 311 }
 312 EXPORT_SYMBOL_GPL(wm8350_reg_lock);
 313
 314 int wm8350_reg_unlock(struct wm8350 *wm8350)
 315 {
 316         u16 key = WM8350_UNLOCK_KEY;
 317         int ret;
 318
 319         ldbg(__func__);
 320         mutex_lock(&io_mutex);
 321         ret = wm8350_write(wm8350, WM8350_SECURITY, 1, &key);
 322         if (ret)
 323                 dev_err(wm8350->dev, "unlock failed\n");
 324         mutex_unlock(&io_mutex);
 325         return ret;
 326 }
 327 EXPORT_SYMBOL_GPL(wm8350_reg_unlock);
 328
 329 static void wm8350_irq_call_handler(struct wm8350 *wm8350, int irq)
 330 {
 331         mutex_lock(&wm8350->irq_mutex);
 332
 333         if (wm8350->irq[irq].handler)
 334                 wm8350->irq[irq].handler(wm8350, irq, wm8350->irq[irq].data);
 335         else {
 336                 dev_err(wm8350->dev, "irq %d nobody cared. now masked.\n",
 337                         irq);
 338                 wm8350_mask_irq(wm8350, irq);
 339         }
 340
 341         mutex_unlock(&wm8350->irq_mutex);
 342 }
 343
 344 /*
 345  * wm8350_irq_worker actually handles the interrupts.  Since all
 346  * interrupts are clear on read the IRQ line will be reasserted and
 347  * the physical IRQ will be handled again if another interrupt is
 348  * asserted while we run - in the normal course of events this is a
 349  * rare occurrence so we save I2C/SPI reads.
 350  */
 351 static void wm8350_irq_worker(struct work_struct *work)
 352 {
 353         struct wm8350 *wm8350 = container_of(work, struct wm8350, irq_work);
 354         u16 level_one, status1, status2, comp;
 355
 356         /* TODO: Use block reads to improve performance? */
 357         level_one = wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS)
 358                 & ~wm8350_reg_read(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK);
 359         status1 = wm8350_reg_read(wm8350, WM8350_INT_STATUS_1)
 360                 & ~wm8350_reg_read(wm8350, WM8350_INT_STATUS_1_MASK);
 361         status2 = wm8350_reg_read(wm8350, WM8350_INT_STATUS_2)
 362                 & ~wm8350_reg_read(wm8350, WM8350_INT_STATUS_2_MASK);
 363         comp = wm8350_reg_read(wm8350, WM8350_COMPARATOR_INT_STATUS)
 364                 & ~wm8350_reg_read(wm8350, WM8350_COMPARATOR_INT_STATUS_MASK);
 365
 366         /* over current */
 367         if (level_one & WM8350_OC_INT) {
 368                 u16 oc;
 369
 370                 oc = wm8350_reg_read(wm8350, WM8350_OVER_CURRENT_INT_STATUS);
 371                 oc &= ~wm8350_reg_read(wm8350,
 372                                        WM8350_OVER_CURRENT_INT_STATUS_MASK);
 373
 374                 if (oc & WM8350_OC_LS_EINT)     /* limit switch */
 375                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_OC_LS);
 376         }
 377
 378         /* under voltage */
 379         if (level_one & WM8350_UV_INT) {
 380                 u16 uv;
 381
 382                 uv = wm8350_reg_read(wm8350, WM8350_UNDER_VOLTAGE_INT_STATUS);
 383                 uv &= ~wm8350_reg_read(wm8350,
 384                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK);
 385
 386                 if (uv & WM8350_UV_DC1_EINT)
 387                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC1);
 388                 if (uv & WM8350_UV_DC2_EINT)
 389                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC2);
 390                 if (uv & WM8350_UV_DC3_EINT)
 391                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC3);
 392                 if (uv & WM8350_UV_DC4_EINT)
 393                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC4);
 394                 if (uv & WM8350_UV_DC5_EINT)
 395                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC5);
 396                 if (uv & WM8350_UV_DC6_EINT)
 397                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_DC6);
 398                 if (uv & WM8350_UV_LDO1_EINT)
 399                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO1);
 400                 if (uv & WM8350_UV_LDO2_EINT)
 401                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO2);
 402                 if (uv & WM8350_UV_LDO3_EINT)
 403                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO3);
 404                 if (uv & WM8350_UV_LDO4_EINT)
 405                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_UV_LDO4);
 406         }
 407
 408         /* charger, RTC */
 409         if (status1) {
 410                 if (status1 & WM8350_CHG_BAT_HOT_EINT)
 411                         wm8350_irq_call_handler(wm8350,
 412                                                 WM8350_IRQ_CHG_BAT_HOT);
 413                 if (status1 & WM8350_CHG_BAT_COLD_EINT)
 414                         wm8350_irq_call_handler(wm8350,
 415                                                 WM8350_IRQ_CHG_BAT_COLD);
 416                 if (status1 & WM8350_CHG_BAT_FAIL_EINT)
 417                         wm8350_irq_call_handler(wm8350,
 418                                                 WM8350_IRQ_CHG_BAT_FAIL);
 419                 if (status1 & WM8350_CHG_TO_EINT)
 420                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_CHG_TO);
 421                 if (status1 & WM8350_CHG_END_EINT)
 422                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_CHG_END);
 423                 if (status1 & WM8350_CHG_START_EINT)
 424                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_CHG_START);
 425                 if (status1 & WM8350_CHG_FAST_RDY_EINT)
 426                         wm8350_irq_call_handler(wm8350,
 427                                                 WM8350_IRQ_CHG_FAST_RDY);
 428                 if (status1 & WM8350_CHG_VBATT_LT_3P9_EINT)
 429                         wm8350_irq_call_handler(wm8350,
 430                                                 WM8350_IRQ_CHG_VBATT_LT_3P9);
 431                 if (status1 & WM8350_CHG_VBATT_LT_3P1_EINT)
 432                         wm8350_irq_call_handler(wm8350,
 433                                                 WM8350_IRQ_CHG_VBATT_LT_3P1);
 434                 if (status1 & WM8350_CHG_VBATT_LT_2P85_EINT)
 435                         wm8350_irq_call_handler(wm8350,
 436                                                 WM8350_IRQ_CHG_VBATT_LT_2P85);
 437                 if (status1 & WM8350_RTC_ALM_EINT)
 438                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_RTC_ALM);
 439                 if (status1 & WM8350_RTC_SEC_EINT)
 440                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_RTC_SEC);
 441                 if (status1 & WM8350_RTC_PER_EINT)
 442                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_RTC_PER);
 443         }
 444
 445         /* current sink, system, aux adc */
 446         if (status2) {
 447                 if (status2 & WM8350_CS1_EINT)
 448                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_CS1);
 449                 if (status2 & WM8350_CS2_EINT)
 450                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_CS2);
 451
 452                 if (status2 & WM8350_SYS_HYST_COMP_FAIL_EINT)
 453                         wm8350_irq_call_handler(wm8350,
 454                                                 WM8350_IRQ_SYS_HYST_COMP_FAIL);
 455                 if (status2 & WM8350_SYS_CHIP_GT115_EINT)
 456                         wm8350_irq_call_handler(wm8350,
 457                                                 WM8350_IRQ_SYS_CHIP_GT115);
 458                 if (status2 & WM8350_SYS_CHIP_GT140_EINT)
 459                         wm8350_irq_call_handler(wm8350,
 460                                                 WM8350_IRQ_SYS_CHIP_GT140);
 461                 if (status2 & WM8350_SYS_WDOG_TO_EINT)
 462                         wm8350_irq_call_handler(wm8350,
 463                                                 WM8350_IRQ_SYS_WDOG_TO);
 464
 465                 if (status2 & WM8350_AUXADC_DATARDY_EINT)
 466                         wm8350_irq_call_handler(wm8350,
 467                                                 WM8350_IRQ_AUXADC_DATARDY);
 468                 if (status2 & WM8350_AUXADC_DCOMP4_EINT)
 469                         wm8350_irq_call_handler(wm8350,
 470                                                 WM8350_IRQ_AUXADC_DCOMP4);
 471                 if (status2 & WM8350_AUXADC_DCOMP3_EINT)
 472                         wm8350_irq_call_handler(wm8350,
 473                                                 WM8350_IRQ_AUXADC_DCOMP3);
 474                 if (status2 & WM8350_AUXADC_DCOMP2_EINT)
 475                         wm8350_irq_call_handler(wm8350,
 476                                                 WM8350_IRQ_AUXADC_DCOMP2);
 477                 if (status2 & WM8350_AUXADC_DCOMP1_EINT)
 478                         wm8350_irq_call_handler(wm8350,
 479                                                 WM8350_IRQ_AUXADC_DCOMP1);
 480
 481                 if (status2 & WM8350_USB_LIMIT_EINT)
 482                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_USB_LIMIT);
 483         }
 484
 485         /* wake, codec, ext */
 486         if (comp) {
 487                 if (comp & WM8350_WKUP_OFF_STATE_EINT)
 488                         wm8350_irq_call_handler(wm8350,
 489                                                 WM8350_IRQ_WKUP_OFF_STATE);
 490                 if (comp & WM8350_WKUP_HIB_STATE_EINT)
 491                         wm8350_irq_call_handler(wm8350,
 492                                                 WM8350_IRQ_WKUP_HIB_STATE);
 493                 if (comp & WM8350_WKUP_CONV_FAULT_EINT)
 494                         wm8350_irq_call_handler(wm8350,
 495                                                 WM8350_IRQ_WKUP_CONV_FAULT);
 496                 if (comp & WM8350_WKUP_WDOG_RST_EINT)
 497                         wm8350_irq_call_handler(wm8350,
 498                                                 WM8350_IRQ_WKUP_WDOG_RST);
 499                 if (comp & WM8350_WKUP_GP_PWR_ON_EINT)
 500                         wm8350_irq_call_handler(wm8350,
 501                                                 WM8350_IRQ_WKUP_GP_PWR_ON);
 502                 if (comp & WM8350_WKUP_ONKEY_EINT)
 503                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_WKUP_ONKEY);
 504                 if (comp & WM8350_WKUP_GP_WAKEUP_EINT)
 505                         wm8350_irq_call_handler(wm8350,
 506                                                 WM8350_IRQ_WKUP_GP_WAKEUP);
 507
 508                 if (comp & WM8350_CODEC_JCK_DET_L_EINT)
 509                         wm8350_irq_call_handler(wm8350,
 510                                                 WM8350_IRQ_CODEC_JCK_DET_L);
 511                 if (comp & WM8350_CODEC_JCK_DET_R_EINT)
 512                         wm8350_irq_call_handler(wm8350,
 513                                                 WM8350_IRQ_CODEC_JCK_DET_R);
 514                 if (comp & WM8350_CODEC_MICSCD_EINT)
 515                         wm8350_irq_call_handler(wm8350,
 516                                                 WM8350_IRQ_CODEC_MICSCD);
 517                 if (comp & WM8350_CODEC_MICD_EINT)
 518                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_CODEC_MICD);
 519
 520                 if (comp & WM8350_EXT_USB_FB_EINT)
 521                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_EXT_USB_FB);
 522                 if (comp & WM8350_EXT_WALL_FB_EINT)
 523                         wm8350_irq_call_handler(wm8350,
 524                                                 WM8350_IRQ_EXT_WALL_FB);
 525                 if (comp & WM8350_EXT_BAT_FB_EINT)
 526                         wm8350_irq_call_handler(wm8350, WM8350_IRQ_EXT_BAT_FB);
 527         }
 528
 529         if (level_one & WM8350_GP_INT) {
 530                 int i;
 531                 u16 gpio;
 532
 533                 gpio = wm8350_reg_read(wm8350, WM8350_GPIO_INT_STATUS);
 534                 gpio &= ~wm8350_reg_read(wm8350,
 535                                          WM8350_GPIO_INT_STATUS_MASK);
 536
 537                 for (i = 0; i < 12; i++) {
 538                         if (gpio & (1 << i))
 539                                 wm8350_irq_call_handler(wm8350,
 540                                                         WM8350_IRQ_GPIO(i));
 541                 }
 542         }
 543
 544         enable_irq(wm8350->chip_irq);
 545 }
 546
 547 static irqreturn_t wm8350_irq(int irq, void *data)
 548 {
 549         struct wm8350 *wm8350 = data;
 550
 551         disable_irq_nosync(irq);
 552         schedule_work(&wm8350->irq_work);
 553
 554         return IRQ_HANDLED;
 555 }
 556
 557 int wm8350_register_irq(struct wm8350 *wm8350, int irq,
 558                         void (*handler) (struct wm8350 *, int, void *),
 559                         void *data)
 560 {
 561         if (irq < 0 || irq > WM8350_NUM_IRQ || !handler)
 562                 return -EINVAL;
 563
 564         if (wm8350->irq[irq].handler)
 565                 return -EBUSY;
 566
 567         mutex_lock(&wm8350->irq_mutex);
 568         wm8350->irq[irq].handler = handler;
 569         wm8350->irq[irq].data = data;
 570         mutex_unlock(&wm8350->irq_mutex);
 571
 572         return 0;
 573 }
 574 EXPORT_SYMBOL_GPL(wm8350_register_irq);
 575
 576 int wm8350_free_irq(struct wm8350 *wm8350, int irq)
 577 {
 578         if (irq < 0 || irq > WM8350_NUM_IRQ)
 579                 return -EINVAL;
 580
 581         mutex_lock(&wm8350->irq_mutex);
 582         wm8350->irq[irq].handler = NULL;
 583         mutex_unlock(&wm8350->irq_mutex);
 584         return 0;
 585 }
 586 EXPORT_SYMBOL_GPL(wm8350_free_irq);
 587
 588 int wm8350_mask_irq(struct wm8350 *wm8350, int irq)
 589 {
 590         switch (irq) {
 591         case WM8350_IRQ_CHG_BAT_HOT:
 592                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 593                                        WM8350_IM_CHG_BAT_HOT_EINT);
 594         case WM8350_IRQ_CHG_BAT_COLD:
 595                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 596                                        WM8350_IM_CHG_BAT_COLD_EINT);
 597         case WM8350_IRQ_CHG_BAT_FAIL:
 598                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 599                                        WM8350_IM_CHG_BAT_FAIL_EINT);
 600         case WM8350_IRQ_CHG_TO:
 601                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 602                                        WM8350_IM_CHG_TO_EINT);
 603         case WM8350_IRQ_CHG_END:
 604                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 605                                        WM8350_IM_CHG_END_EINT);
 606         case WM8350_IRQ_CHG_START:
 607                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 608                                        WM8350_IM_CHG_START_EINT);
 609         case WM8350_IRQ_CHG_FAST_RDY:
 610                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 611                                        WM8350_IM_CHG_FAST_RDY_EINT);
 612         case WM8350_IRQ_RTC_PER:
 613                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 614                                        WM8350_IM_RTC_PER_EINT);
 615         case WM8350_IRQ_RTC_SEC:
 616                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 617                                        WM8350_IM_RTC_SEC_EINT);
 618         case WM8350_IRQ_RTC_ALM:
 619                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 620                                        WM8350_IM_RTC_ALM_EINT);
 621         case WM8350_IRQ_CHG_VBATT_LT_3P9:
 622                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 623                                        WM8350_IM_CHG_VBATT_LT_3P9_EINT);
 624         case WM8350_IRQ_CHG_VBATT_LT_3P1:
 625                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 626                                        WM8350_IM_CHG_VBATT_LT_3P1_EINT);
 627         case WM8350_IRQ_CHG_VBATT_LT_2P85:
 628                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 629                                        WM8350_IM_CHG_VBATT_LT_2P85_EINT);
 630         case WM8350_IRQ_CS1:
 631                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 632                                        WM8350_IM_CS1_EINT);
 633         case WM8350_IRQ_CS2:
 634                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 635                                        WM8350_IM_CS2_EINT);
 636         case WM8350_IRQ_USB_LIMIT:
 637                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 638                                        WM8350_IM_USB_LIMIT_EINT);
 639         case WM8350_IRQ_AUXADC_DATARDY:
 640                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 641                                        WM8350_IM_AUXADC_DATARDY_EINT);
 642         case WM8350_IRQ_AUXADC_DCOMP4:
 643                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 644                                        WM8350_IM_AUXADC_DCOMP4_EINT);
 645         case WM8350_IRQ_AUXADC_DCOMP3:
 646                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 647                                        WM8350_IM_AUXADC_DCOMP3_EINT);
 648         case WM8350_IRQ_AUXADC_DCOMP2:
 649                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 650                                        WM8350_IM_AUXADC_DCOMP2_EINT);
 651         case WM8350_IRQ_AUXADC_DCOMP1:
 652                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 653                                        WM8350_IM_AUXADC_DCOMP1_EINT);
 654         case WM8350_IRQ_SYS_HYST_COMP_FAIL:
 655                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 656                                        WM8350_IM_SYS_HYST_COMP_FAIL_EINT);
 657         case WM8350_IRQ_SYS_CHIP_GT115:
 658                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 659                                        WM8350_IM_SYS_CHIP_GT115_EINT);
 660         case WM8350_IRQ_SYS_CHIP_GT140:
 661                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 662                                        WM8350_IM_SYS_CHIP_GT140_EINT);
 663         case WM8350_IRQ_SYS_WDOG_TO:
 664                 return wm8350_set_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 665                                        WM8350_IM_SYS_WDOG_TO_EINT);
 666         case WM8350_IRQ_UV_LDO4:
 667                 return wm8350_set_bits(wm8350,
 668                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 669                                        WM8350_IM_UV_LDO4_EINT);
 670         case WM8350_IRQ_UV_LDO3:
 671                 return wm8350_set_bits(wm8350,
 672                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 673                                        WM8350_IM_UV_LDO3_EINT);
 674         case WM8350_IRQ_UV_LDO2:
 675                 return wm8350_set_bits(wm8350,
 676                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 677                                        WM8350_IM_UV_LDO2_EINT);
 678         case WM8350_IRQ_UV_LDO1:
 679                 return wm8350_set_bits(wm8350,
 680                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 681                                        WM8350_IM_UV_LDO1_EINT);
 682         case WM8350_IRQ_UV_DC6:
 683                 return wm8350_set_bits(wm8350,
 684                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 685                                        WM8350_IM_UV_DC6_EINT);
 686         case WM8350_IRQ_UV_DC5:
 687                 return wm8350_set_bits(wm8350,
 688                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 689                                        WM8350_IM_UV_DC5_EINT);
 690         case WM8350_IRQ_UV_DC4:
 691                 return wm8350_set_bits(wm8350,
 692                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 693                                        WM8350_IM_UV_DC4_EINT);
 694         case WM8350_IRQ_UV_DC3:
 695                 return wm8350_set_bits(wm8350,
 696                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 697                                        WM8350_IM_UV_DC3_EINT);
 698         case WM8350_IRQ_UV_DC2:
 699                 return wm8350_set_bits(wm8350,
 700                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 701                                        WM8350_IM_UV_DC2_EINT);
 702         case WM8350_IRQ_UV_DC1:
 703                 return wm8350_set_bits(wm8350,
 704                                        WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 705                                        WM8350_IM_UV_DC1_EINT);
 706         case WM8350_IRQ_OC_LS:
 707                 return wm8350_set_bits(wm8350,
 708                                        WM8350_OVER_CURRENT_INT_STATUS_MASK,
 709                                        WM8350_IM_OC_LS_EINT);
 710         case WM8350_IRQ_EXT_USB_FB:
 711                 return wm8350_set_bits(wm8350,
 712                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 713                                        WM8350_IM_EXT_USB_FB_EINT);
 714         case WM8350_IRQ_EXT_WALL_FB:
 715                 return wm8350_set_bits(wm8350,
 716                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 717                                        WM8350_IM_EXT_WALL_FB_EINT);
 718         case WM8350_IRQ_EXT_BAT_FB:
 719                 return wm8350_set_bits(wm8350,
 720                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 721                                        WM8350_IM_EXT_BAT_FB_EINT);
 722         case WM8350_IRQ_CODEC_JCK_DET_L:
 723                 return wm8350_set_bits(wm8350,
 724                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 725                                        WM8350_IM_CODEC_JCK_DET_L_EINT);
 726         case WM8350_IRQ_CODEC_JCK_DET_R:
 727                 return wm8350_set_bits(wm8350,
 728                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 729                                        WM8350_IM_CODEC_JCK_DET_R_EINT);
 730         case WM8350_IRQ_CODEC_MICSCD:
 731                 return wm8350_set_bits(wm8350,
 732                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 733                                        WM8350_IM_CODEC_MICSCD_EINT);
 734         case WM8350_IRQ_CODEC_MICD:
 735                 return wm8350_set_bits(wm8350,
 736                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 737                                        WM8350_IM_CODEC_MICD_EINT);
 738         case WM8350_IRQ_WKUP_OFF_STATE:
 739                 return wm8350_set_bits(wm8350,
 740                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 741                                        WM8350_IM_WKUP_OFF_STATE_EINT);
 742         case WM8350_IRQ_WKUP_HIB_STATE:
 743                 return wm8350_set_bits(wm8350,
 744                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 745                                        WM8350_IM_WKUP_HIB_STATE_EINT);
 746         case WM8350_IRQ_WKUP_CONV_FAULT:
 747                 return wm8350_set_bits(wm8350,
 748                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 749                                        WM8350_IM_WKUP_CONV_FAULT_EINT);
 750         case WM8350_IRQ_WKUP_WDOG_RST:
 751                 return wm8350_set_bits(wm8350,
 752                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 753                                        WM8350_IM_WKUP_OFF_STATE_EINT);
 754         case WM8350_IRQ_WKUP_GP_PWR_ON:
 755                 return wm8350_set_bits(wm8350,
 756                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 757                                        WM8350_IM_WKUP_GP_PWR_ON_EINT);
 758         case WM8350_IRQ_WKUP_ONKEY:
 759                 return wm8350_set_bits(wm8350,
 760                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 761                                        WM8350_IM_WKUP_ONKEY_EINT);
 762         case WM8350_IRQ_WKUP_GP_WAKEUP:
 763                 return wm8350_set_bits(wm8350,
 764                                        WM8350_COMPARATOR_INT_STATUS_MASK,
 765                                        WM8350_IM_WKUP_GP_WAKEUP_EINT);
 766         case WM8350_IRQ_GPIO(0):
 767                 return wm8350_set_bits(wm8350,
 768                                        WM8350_GPIO_INT_STATUS_MASK,
 769                                        WM8350_IM_GP0_EINT);
 770         case WM8350_IRQ_GPIO(1):
 771                 return wm8350_set_bits(wm8350,
 772                                        WM8350_GPIO_INT_STATUS_MASK,
 773                                        WM8350_IM_GP1_EINT);
 774         case WM8350_IRQ_GPIO(2):
 775                 return wm8350_set_bits(wm8350,
 776                                        WM8350_GPIO_INT_STATUS_MASK,
 777                                        WM8350_IM_GP2_EINT);
 778         case WM8350_IRQ_GPIO(3):
 779                 return wm8350_set_bits(wm8350,
 780                                        WM8350_GPIO_INT_STATUS_MASK,
 781                                        WM8350_IM_GP3_EINT);
 782         case WM8350_IRQ_GPIO(4):
 783                 return wm8350_set_bits(wm8350,
 784                                        WM8350_GPIO_INT_STATUS_MASK,
 785                                        WM8350_IM_GP4_EINT);
 786         case WM8350_IRQ_GPIO(5):
 787                 return wm8350_set_bits(wm8350,
 788                                        WM8350_GPIO_INT_STATUS_MASK,
 789                                        WM8350_IM_GP5_EINT);
 790         case WM8350_IRQ_GPIO(6):
 791                 return wm8350_set_bits(wm8350,
 792                                        WM8350_GPIO_INT_STATUS_MASK,
 793                                        WM8350_IM_GP6_EINT);
 794         case WM8350_IRQ_GPIO(7):
 795                 return wm8350_set_bits(wm8350,
 796                                        WM8350_GPIO_INT_STATUS_MASK,
 797                                        WM8350_IM_GP7_EINT);
 798         case WM8350_IRQ_GPIO(8):
 799                 return wm8350_set_bits(wm8350,
 800                                        WM8350_GPIO_INT_STATUS_MASK,
 801                                        WM8350_IM_GP8_EINT);
 802         case WM8350_IRQ_GPIO(9):
 803                 return wm8350_set_bits(wm8350,
 804                                        WM8350_GPIO_INT_STATUS_MASK,
 805                                        WM8350_IM_GP9_EINT);
 806         case WM8350_IRQ_GPIO(10):
 807                 return wm8350_set_bits(wm8350,
 808                                        WM8350_GPIO_INT_STATUS_MASK,
 809                                        WM8350_IM_GP10_EINT);
 810         case WM8350_IRQ_GPIO(11):
 811                 return wm8350_set_bits(wm8350,
 812                                        WM8350_GPIO_INT_STATUS_MASK,
 813                                        WM8350_IM_GP11_EINT);
 814         case WM8350_IRQ_GPIO(12):
 815                 return wm8350_set_bits(wm8350,
 816                                        WM8350_GPIO_INT_STATUS_MASK,
 817                                        WM8350_IM_GP12_EINT);
 818         default:
 819                 dev_warn(wm8350->dev, "Attempting to mask unknown IRQ %d\n",
 820                          irq);
 821                 return -EINVAL;
 822         }
 823         return 0;
 824 }
 825 EXPORT_SYMBOL_GPL(wm8350_mask_irq);
 826
 827 int wm8350_unmask_irq(struct wm8350 *wm8350, int irq)
 828 {
 829         switch (irq) {
 830         case WM8350_IRQ_CHG_BAT_HOT:
 831                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 832                                          WM8350_IM_CHG_BAT_HOT_EINT);
 833         case WM8350_IRQ_CHG_BAT_COLD:
 834                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 835                                          WM8350_IM_CHG_BAT_COLD_EINT);
 836         case WM8350_IRQ_CHG_BAT_FAIL:
 837                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 838                                          WM8350_IM_CHG_BAT_FAIL_EINT);
 839         case WM8350_IRQ_CHG_TO:
 840                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 841                                          WM8350_IM_CHG_TO_EINT);
 842         case WM8350_IRQ_CHG_END:
 843                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 844                                          WM8350_IM_CHG_END_EINT);
 845         case WM8350_IRQ_CHG_START:
 846                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 847                                          WM8350_IM_CHG_START_EINT);
 848         case WM8350_IRQ_CHG_FAST_RDY:
 849                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 850                                          WM8350_IM_CHG_FAST_RDY_EINT);
 851         case WM8350_IRQ_RTC_PER:
 852                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 853                                          WM8350_IM_RTC_PER_EINT);
 854         case WM8350_IRQ_RTC_SEC:
 855                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 856                                          WM8350_IM_RTC_SEC_EINT);
 857         case WM8350_IRQ_RTC_ALM:
 858                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 859                                          WM8350_IM_RTC_ALM_EINT);
 860         case WM8350_IRQ_CHG_VBATT_LT_3P9:
 861                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 862                                          WM8350_IM_CHG_VBATT_LT_3P9_EINT);
 863         case WM8350_IRQ_CHG_VBATT_LT_3P1:
 864                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 865                                          WM8350_IM_CHG_VBATT_LT_3P1_EINT);
 866         case WM8350_IRQ_CHG_VBATT_LT_2P85:
 867                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_1_MASK,
 868                                          WM8350_IM_CHG_VBATT_LT_2P85_EINT);
 869         case WM8350_IRQ_CS1:
 870                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 871                                          WM8350_IM_CS1_EINT);
 872         case WM8350_IRQ_CS2:
 873                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 874                                          WM8350_IM_CS2_EINT);
 875         case WM8350_IRQ_USB_LIMIT:
 876                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 877                                          WM8350_IM_USB_LIMIT_EINT);
 878         case WM8350_IRQ_AUXADC_DATARDY:
 879                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 880                                          WM8350_IM_AUXADC_DATARDY_EINT);
 881         case WM8350_IRQ_AUXADC_DCOMP4:
 882                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 883                                          WM8350_IM_AUXADC_DCOMP4_EINT);
 884         case WM8350_IRQ_AUXADC_DCOMP3:
 885                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 886                                          WM8350_IM_AUXADC_DCOMP3_EINT);
 887         case WM8350_IRQ_AUXADC_DCOMP2:
 888                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 889                                          WM8350_IM_AUXADC_DCOMP2_EINT);
 890         case WM8350_IRQ_AUXADC_DCOMP1:
 891                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 892                                          WM8350_IM_AUXADC_DCOMP1_EINT);
 893         case WM8350_IRQ_SYS_HYST_COMP_FAIL:
 894                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 895                                          WM8350_IM_SYS_HYST_COMP_FAIL_EINT);
 896         case WM8350_IRQ_SYS_CHIP_GT115:
 897                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 898                                          WM8350_IM_SYS_CHIP_GT115_EINT);
 899         case WM8350_IRQ_SYS_CHIP_GT140:
 900                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 901                                          WM8350_IM_SYS_CHIP_GT140_EINT);
 902         case WM8350_IRQ_SYS_WDOG_TO:
 903                 return wm8350_clear_bits(wm8350, WM8350_INT_STATUS_2_MASK,
 904                                          WM8350_IM_SYS_WDOG_TO_EINT);
 905         case WM8350_IRQ_UV_LDO4:
 906                 return wm8350_clear_bits(wm8350,
 907                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 908                                          WM8350_IM_UV_LDO4_EINT);
 909         case WM8350_IRQ_UV_LDO3:
 910                 return wm8350_clear_bits(wm8350,
 911                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 912                                          WM8350_IM_UV_LDO3_EINT);
 913         case WM8350_IRQ_UV_LDO2:
 914                 return wm8350_clear_bits(wm8350,
 915                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 916                                          WM8350_IM_UV_LDO2_EINT);
 917         case WM8350_IRQ_UV_LDO1:
 918                 return wm8350_clear_bits(wm8350,
 919                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 920                                          WM8350_IM_UV_LDO1_EINT);
 921         case WM8350_IRQ_UV_DC6:
 922                 return wm8350_clear_bits(wm8350,
 923                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 924                                          WM8350_IM_UV_DC6_EINT);
 925         case WM8350_IRQ_UV_DC5:
 926                 return wm8350_clear_bits(wm8350,
 927                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 928                                          WM8350_IM_UV_DC5_EINT);
 929         case WM8350_IRQ_UV_DC4:
 930                 return wm8350_clear_bits(wm8350,
 931                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 932                                          WM8350_IM_UV_DC4_EINT);
 933         case WM8350_IRQ_UV_DC3:
 934                 return wm8350_clear_bits(wm8350,
 935                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 936                                          WM8350_IM_UV_DC3_EINT);
 937         case WM8350_IRQ_UV_DC2:
 938                 return wm8350_clear_bits(wm8350,
 939                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 940                                          WM8350_IM_UV_DC2_EINT);
 941         case WM8350_IRQ_UV_DC1:
 942                 return wm8350_clear_bits(wm8350,
 943                                          WM8350_UNDER_VOLTAGE_INT_STATUS_MASK,
 944                                          WM8350_IM_UV_DC1_EINT);
 945         case WM8350_IRQ_OC_LS:
 946                 return wm8350_clear_bits(wm8350,
 947                                          WM8350_OVER_CURRENT_INT_STATUS_MASK,
 948                                          WM8350_IM_OC_LS_EINT);
 949         case WM8350_IRQ_EXT_USB_FB:
 950                 return wm8350_clear_bits(wm8350,
 951                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 952                                          WM8350_IM_EXT_USB_FB_EINT);
 953         case WM8350_IRQ_EXT_WALL_FB:
 954                 return wm8350_clear_bits(wm8350,
 955                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 956                                          WM8350_IM_EXT_WALL_FB_EINT);
 957         case WM8350_IRQ_EXT_BAT_FB:
 958                 return wm8350_clear_bits(wm8350,
 959                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 960                                          WM8350_IM_EXT_BAT_FB_EINT);
 961         case WM8350_IRQ_CODEC_JCK_DET_L:
 962                 return wm8350_clear_bits(wm8350,
 963                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 964                                          WM8350_IM_CODEC_JCK_DET_L_EINT);
 965         case WM8350_IRQ_CODEC_JCK_DET_R:
 966                 return wm8350_clear_bits(wm8350,
 967                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 968                                          WM8350_IM_CODEC_JCK_DET_R_EINT);
 969         case WM8350_IRQ_CODEC_MICSCD:
 970                 return wm8350_clear_bits(wm8350,
 971                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 972                                          WM8350_IM_CODEC_MICSCD_EINT);
 973         case WM8350_IRQ_CODEC_MICD:
 974                 return wm8350_clear_bits(wm8350,
 975                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 976                                          WM8350_IM_CODEC_MICD_EINT);
 977         case WM8350_IRQ_WKUP_OFF_STATE:
 978                 return wm8350_clear_bits(wm8350,
 979                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 980                                          WM8350_IM_WKUP_OFF_STATE_EINT);
 981         case WM8350_IRQ_WKUP_HIB_STATE:
 982                 return wm8350_clear_bits(wm8350,
 983                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 984                                          WM8350_IM_WKUP_HIB_STATE_EINT);
 985         case WM8350_IRQ_WKUP_CONV_FAULT:
 986                 return wm8350_clear_bits(wm8350,
 987                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 988                                          WM8350_IM_WKUP_CONV_FAULT_EINT);
 989         case WM8350_IRQ_WKUP_WDOG_RST:
 990                 return wm8350_clear_bits(wm8350,
 991                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 992                                          WM8350_IM_WKUP_OFF_STATE_EINT);
 993         case WM8350_IRQ_WKUP_GP_PWR_ON:
 994                 return wm8350_clear_bits(wm8350,
 995                                          WM8350_COMPARATOR_INT_STATUS_MASK,
 996                                          WM8350_IM_WKUP_GP_PWR_ON_EINT);
 997         case WM8350_IRQ_WKUP_ONKEY:
 998                 return wm8350_clear_bits(wm8350,
 999                                          WM8350_COMPARATOR_INT_STATUS_MASK,
1000                                          WM8350_IM_WKUP_ONKEY_EINT);
1001         case WM8350_IRQ_WKUP_GP_WAKEUP:
1002                 return wm8350_clear_bits(wm8350,
1003                                          WM8350_COMPARATOR_INT_STATUS_MASK,
1004                                          WM8350_IM_WKUP_GP_WAKEUP_EINT);
1005         case WM8350_IRQ_GPIO(0):
1006                 return wm8350_clear_bits(wm8350,
1007                                          WM8350_GPIO_INT_STATUS_MASK,
1008                                          WM8350_IM_GP0_EINT);
1009         case WM8350_IRQ_GPIO(1):
1010                 return wm8350_clear_bits(wm8350,
1011                                          WM8350_GPIO_INT_STATUS_MASK,
1012                                          WM8350_IM_GP1_EINT);
1013         case WM8350_IRQ_GPIO(2):
1014                 return wm8350_clear_bits(wm8350,
1015                                          WM8350_GPIO_INT_STATUS_MASK,
1016                                          WM8350_IM_GP2_EINT);
1017         case WM8350_IRQ_GPIO(3):
1018                 return wm8350_clear_bits(wm8350,
1019                                          WM8350_GPIO_INT_STATUS_MASK,
1020                                          WM8350_IM_GP3_EINT);
1021         case WM8350_IRQ_GPIO(4):
1022                 return wm8350_clear_bits(wm8350,
1023                                          WM8350_GPIO_INT_STATUS_MASK,
1024                                          WM8350_IM_GP4_EINT);
1025         case WM8350_IRQ_GPIO(5):
1026                 return wm8350_clear_bits(wm8350,
1027                                          WM8350_GPIO_INT_STATUS_MASK,
1028                                          WM8350_IM_GP5_EINT);
1029         case WM8350_IRQ_GPIO(6):
1030                 return wm8350_clear_bits(wm8350,
1031                                          WM8350_GPIO_INT_STATUS_MASK,
1032                                          WM8350_IM_GP6_EINT);
1033         case WM8350_IRQ_GPIO(7):
1034                 return wm8350_clear_bits(wm8350,
1035                                          WM8350_GPIO_INT_STATUS_MASK,
1036                                          WM8350_IM_GP7_EINT);
1037         case WM8350_IRQ_GPIO(8):
1038                 return wm8350_clear_bits(wm8350,
1039                                          WM8350_GPIO_INT_STATUS_MASK,
1040                                          WM8350_IM_GP8_EINT);
1041         case WM8350_IRQ_GPIO(9):
1042                 return wm8350_clear_bits(wm8350,
1043                                          WM8350_GPIO_INT_STATUS_MASK,
1044                                          WM8350_IM_GP9_EINT);
1045         case WM8350_IRQ_GPIO(10):
1046                 return wm8350_clear_bits(wm8350,
1047                                          WM8350_GPIO_INT_STATUS_MASK,
1048                                          WM8350_IM_GP10_EINT);
1049         case WM8350_IRQ_GPIO(11):
1050                 return wm8350_clear_bits(wm8350,
1051                                          WM8350_GPIO_INT_STATUS_MASK,
1052                                          WM8350_IM_GP11_EINT);
1053         case WM8350_IRQ_GPIO(12):
1054                 return wm8350_clear_bits(wm8350,
1055                                          WM8350_GPIO_INT_STATUS_MASK,
1056                                          WM8350_IM_GP12_EINT);
1057         default:
1058                 dev_warn(wm8350->dev, "Attempting to unmask unknown IRQ %d\n",
1059                          irq);
1060                 return -EINVAL;
1061         }
1062         return 0;
1063 }
1064 EXPORT_SYMBOL_GPL(wm8350_unmask_irq);
1065
1066 /*
1067  * Cache is always host endian.
1068  */
1069 static int wm8350_create_cache(struct wm8350 *wm8350, int mode)
1070 {
1071         int i, ret = 0;
1072         u16 value;
1073         const u16 *reg_map;
1074
1075         switch (mode) {
1076 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_0
1077         case 0:
1078                 reg_map = wm8350_mode0_defaults;
1079                 break;
1080 #endif
1081 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_1
1082         case 1:
1083                 reg_map = wm8350_mode1_defaults;
1084                 break;
1085 #endif
1086 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_2
1087         case 2:
1088                 reg_map = wm8350_mode2_defaults;
1089                 break;
1090 #endif
1091 #ifdef CONFIG_MFD_WM8350_CONFIG_MODE_3
1092         case 3:
1093                 reg_map = wm8350_mode3_defaults;
1094                 break;
1095 #endif
1096         default:
1097                 dev_err(wm8350->dev, "Configuration mode %d not supported\n",
1098                         mode);
1099                 return -EINVAL;
1100         }
1101
1102         wm8350->reg_cache =
1103             kzalloc(sizeof(u16) * (WM8350_MAX_REGISTER + 1), GFP_KERNEL);
1104         if (wm8350->reg_cache == NULL)
1105                 return -ENOMEM;
1106
1107         /* Read the initial cache state back from the device - this is
1108          * a PMIC so the device many not be in a virgin state and we
1109          * can't rely on the silicon values.
1110          */
1111         for (i = 0; i < WM8350_MAX_REGISTER; i++) {
1112                 /* audio register range */
1113                 if (wm8350_reg_io_map[i].readable &&
1114                     (i < WM8350_CLOCK_CONTROL_1 || i > WM8350_AIF_TEST)) {
1115                         ret = wm8350->read_dev(wm8350, i, 2, (char *)&value);
1116                         if (ret < 0) {
1117                                 dev_err(wm8350->dev,
1118                                        "failed to read initial cache value\n");
1119                                 goto out;
1120                         }
1121                         value = be16_to_cpu(value);
1122                         value &= wm8350_reg_io_map[i].readable;
1123                         wm8350->reg_cache[i] = value;
1124                 } else
1125                         wm8350->reg_cache[i] = reg_map[i];
1126         }
1127
1128 out:
1129         return ret;
1130 }
1131 EXPORT_SYMBOL_GPL(wm8350_create_cache);
1132
1133 /*
1134  * Register a client device.  This is non-fatal since there is no need to
1135  * fail the entire device init due to a single platform device failing.
1136  */
1137 static void wm8350_client_dev_register(struct wm8350 *wm8350,
1138                                        const char *name,
1139                                        struct platform_device **pdev)
1140 {
1141         int ret;
1142
1143         *pdev = platform_device_alloc(name, -1);
1144         if (pdev == NULL) {
1145                 dev_err(wm8350->dev, "Failed to allocate %s\n", name);
1146                 return;
1147         }
1148
1149         (*pdev)->dev.parent = wm8350->dev;
1150         platform_set_drvdata(*pdev, wm8350);
1151         ret = platform_device_add(*pdev);
1152         if (ret != 0) {
1153                 dev_err(wm8350->dev, "Failed to register %s: %d\n", name, ret);
1154                 platform_device_put(*pdev);
1155                 *pdev = NULL;
1156         }
1157 }
1158
1159 int wm8350_device_init(struct wm8350 *wm8350, int irq,
1160                        struct wm8350_platform_data *pdata)
1161 {
1162         int ret = -EINVAL;
1163         u16 id1, id2, mask, mode;
1164
1165         /* get WM8350 revision and config mode */
1166         wm8350->read_dev(wm8350, WM8350_RESET_ID, sizeof(id1), &id1);
1167         wm8350->read_dev(wm8350, WM8350_ID, sizeof(id2), &id2);
1168
1169         id1 = be16_to_cpu(id1);
1170         id2 = be16_to_cpu(id2);
1171
1172         if (id1 == 0x6143) {
1173                 switch ((id2 & WM8350_CHIP_REV_MASK) >> 12) {
1174                 case WM8350_REV_E:
1175                         dev_info(wm8350->dev, "Found Rev E device\n");
1176                         wm8350->rev = WM8350_REV_E;
1177                         break;
1178                 case WM8350_REV_F:
1179                         dev_info(wm8350->dev, "Found Rev F device\n");
1180                         wm8350->rev = WM8350_REV_F;
1181                         break;
1182                 case WM8350_REV_G:
1183                         dev_info(wm8350->dev, "Found Rev G device\n");
1184                         wm8350->rev = WM8350_REV_G;
1185                         break;
1186                 default:
1187                         /* For safety we refuse to run on unknown hardware */
1188                         dev_info(wm8350->dev, "Found unknown rev\n");
1189                         ret = -ENODEV;
1190                         goto err;
1191                 }
1192         } else {
1193                 dev_info(wm8350->dev, "Device with ID %x is not a WM8350\n",
1194                          id1);
1195                 ret = -ENODEV;
1196                 goto err;
1197         }
1198
1199         mode = id2 & WM8350_CONF_STS_MASK >> 10;
1200         mask = id2 & WM8350_CUST_ID_MASK;
1201         dev_info(wm8350->dev, "Config mode %d, ROM mask %d\n", mode, mask);
1202
1203         ret = wm8350_create_cache(wm8350, mode);
1204         if (ret < 0) {
1205                 printk(KERN_ERR "wm8350: failed to create register cache\n");
1206                 return ret;
1207         }
1208
1209         if (pdata->init) {
1210                 ret = pdata->init(wm8350);
1211                 if (ret != 0) {
1212                         dev_err(wm8350->dev, "Platform init() failed: %d\n",
1213                                 ret);
1214                         goto err;
1215                 }
1216         }
1217
1218         mutex_init(&wm8350->irq_mutex);
1219         INIT_WORK(&wm8350->irq_work, wm8350_irq_worker);
1220         if (irq != NO_IRQ) {
1221                 ret = request_irq(irq, wm8350_irq, 0,
1222                                   "wm8350", wm8350);
1223                 if (ret != 0) {
1224                         dev_err(wm8350->dev, "Failed to request IRQ: %d\n",
1225                                 ret);
1226                         goto err;
1227                 }
1228         } else {
1229                 dev_err(wm8350->dev, "No IRQ configured\n");
1230                 goto err;
1231         }
1232         wm8350->chip_irq = irq;
1233
1234         wm8350_reg_write(wm8350, WM8350_SYSTEM_INTERRUPTS_MASK, 0x0);
1235
1236         wm8350_client_dev_register(wm8350, "wm8350-codec",
1237                                    &(wm8350->codec.pdev));
1238         wm8350_client_dev_register(wm8350, "wm8350-gpio",
1239                                    &(wm8350->gpio.pdev));
1240         wm8350_client_dev_register(wm8350, "wm8350-power",
1241                                    &(wm8350->power.pdev));
1242         wm8350_client_dev_register(wm8350, "wm8350-rtc", &(wm8350->rtc.pdev));
1243         wm8350_client_dev_register(wm8350, "wm8350-wdt", &(wm8350->wdt.pdev));
1244
1245         return 0;
1246
1247 err:
1248         kfree(wm8350->reg_cache);
1249         return ret;
1250 }
1251 EXPORT_SYMBOL_GPL(wm8350_device_init);
1252
1253 void wm8350_device_exit(struct wm8350 *wm8350)
1254 {
1255         int i;
1256
1257         for (i = 0; i < ARRAY_SIZE(wm8350->pmic.pdev); i++)
1258                 platform_device_unregister(wm8350->pmic.pdev[i]);
1259
1260         platform_device_unregister(wm8350->wdt.pdev);
1261         platform_device_unregister(wm8350->rtc.pdev);
1262         platform_device_unregister(wm8350->power.pdev);
1263         platform_device_unregister(wm8350->gpio.pdev);
1264         platform_device_unregister(wm8350->codec.pdev);
1265
1266         free_irq(wm8350->chip_irq, wm8350);
1267         flush_work(&wm8350->irq_work);
1268         kfree(wm8350->reg_cache);
1269 }
1270 EXPORT_SYMBOL_GPL(wm8350_device_exit);
1271
1272 MODULE_DESCRIPTION("WM8350 AudioPlus PMIC core driver");
1273 MODULE_LICENSE("GPL");