drivers/input/keyboard/adp5589-keys.c

   1 /*
   2  * Description:  keypad driver for ADP5589, ADP5585
   3  *               I2C QWERTY Keypad and IO Expander
   4  * Bugs: Enter bugs at http://blackfin.uclinux.org/
   5  *
   6  * Copyright (C) 2010-2011 Analog Devices Inc.
   7  * Licensed under the GPL-2.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/irq.h>
  13 #include <linux/workqueue.h>
  14 #include <linux/errno.h>
  15 #include <linux/pm.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/input.h>
  18 #include <linux/i2c.h>
  19 #include <linux/gpio.h>
  20 #include <linux/slab.h>
  21
  22 #include <linux/input/adp5589.h>
  23
  24 /* ADP5589/ADP5585 Common Registers */
  25 #define ADP5589_5_ID                    0x00
  26 #define ADP5589_5_INT_STATUS            0x01
  27 #define ADP5589_5_STATUS                0x02
  28 #define ADP5589_5_FIFO_1                0x03
  29 #define ADP5589_5_FIFO_2                0x04
  30 #define ADP5589_5_FIFO_3                0x05
  31 #define ADP5589_5_FIFO_4                0x06
  32 #define ADP5589_5_FIFO_5                0x07
  33 #define ADP5589_5_FIFO_6                0x08
  34 #define ADP5589_5_FIFO_7                0x09
  35 #define ADP5589_5_FIFO_8                0x0A
  36 #define ADP5589_5_FIFO_9                0x0B
  37 #define ADP5589_5_FIFO_10               0x0C
  38 #define ADP5589_5_FIFO_11               0x0D
  39 #define ADP5589_5_FIFO_12               0x0E
  40 #define ADP5589_5_FIFO_13               0x0F
  41 #define ADP5589_5_FIFO_14               0x10
  42 #define ADP5589_5_FIFO_15               0x11
  43 #define ADP5589_5_FIFO_16               0x12
  44 #define ADP5589_5_GPI_INT_STAT_A        0x13
  45 #define ADP5589_5_GPI_INT_STAT_B        0x14
  46
  47 /* ADP5589 Registers */
  48 #define ADP5589_GPI_INT_STAT_C          0x15
  49 #define ADP5589_GPI_STATUS_A            0x16
  50 #define ADP5589_GPI_STATUS_B            0x17
  51 #define ADP5589_GPI_STATUS_C            0x18
  52 #define ADP5589_RPULL_CONFIG_A          0x19
  53 #define ADP5589_RPULL_CONFIG_B          0x1A
  54 #define ADP5589_RPULL_CONFIG_C          0x1B
  55 #define ADP5589_RPULL_CONFIG_D          0x1C
  56 #define ADP5589_RPULL_CONFIG_E          0x1D
  57 #define ADP5589_GPI_INT_LEVEL_A         0x1E
  58 #define ADP5589_GPI_INT_LEVEL_B         0x1F
  59 #define ADP5589_GPI_INT_LEVEL_C         0x20
  60 #define ADP5589_GPI_EVENT_EN_A          0x21
  61 #define ADP5589_GPI_EVENT_EN_B          0x22
  62 #define ADP5589_GPI_EVENT_EN_C          0x23
  63 #define ADP5589_GPI_INTERRUPT_EN_A      0x24
  64 #define ADP5589_GPI_INTERRUPT_EN_B      0x25
  65 #define ADP5589_GPI_INTERRUPT_EN_C      0x26
  66 #define ADP5589_DEBOUNCE_DIS_A          0x27
  67 #define ADP5589_DEBOUNCE_DIS_B          0x28
  68 #define ADP5589_DEBOUNCE_DIS_C          0x29
  69 #define ADP5589_GPO_DATA_OUT_A          0x2A
  70 #define ADP5589_GPO_DATA_OUT_B          0x2B
  71 #define ADP5589_GPO_DATA_OUT_C          0x2C
  72 #define ADP5589_GPO_OUT_MODE_A          0x2D
  73 #define ADP5589_GPO_OUT_MODE_B          0x2E
  74 #define ADP5589_GPO_OUT_MODE_C          0x2F
  75 #define ADP5589_GPIO_DIRECTION_A        0x30
  76 #define ADP5589_GPIO_DIRECTION_B        0x31
  77 #define ADP5589_GPIO_DIRECTION_C        0x32
  78 #define ADP5589_UNLOCK1                 0x33
  79 #define ADP5589_UNLOCK2                 0x34
  80 #define ADP5589_EXT_LOCK_EVENT          0x35
  81 #define ADP5589_UNLOCK_TIMERS           0x36
  82 #define ADP5589_LOCK_CFG                0x37
  83 #define ADP5589_RESET1_EVENT_A          0x38
  84 #define ADP5589_RESET1_EVENT_B          0x39
  85 #define ADP5589_RESET1_EVENT_C          0x3A
  86 #define ADP5589_RESET2_EVENT_A          0x3B
  87 #define ADP5589_RESET2_EVENT_B          0x3C
  88 #define ADP5589_RESET_CFG               0x3D
  89 #define ADP5589_PWM_OFFT_LOW            0x3E
  90 #define ADP5589_PWM_OFFT_HIGH           0x3F
  91 #define ADP5589_PWM_ONT_LOW             0x40
  92 #define ADP5589_PWM_ONT_HIGH            0x41
  93 #define ADP5589_PWM_CFG                 0x42
  94 #define ADP5589_CLOCK_DIV_CFG           0x43
  95 #define ADP5589_LOGIC_1_CFG             0x44
  96 #define ADP5589_LOGIC_2_CFG             0x45
  97 #define ADP5589_LOGIC_FF_CFG            0x46
  98 #define ADP5589_LOGIC_INT_EVENT_EN      0x47
  99 #define ADP5589_POLL_PTIME_CFG          0x48
 100 #define ADP5589_PIN_CONFIG_A            0x49
 101 #define ADP5589_PIN_CONFIG_B            0x4A
 102 #define ADP5589_PIN_CONFIG_C            0x4B
 103 #define ADP5589_PIN_CONFIG_D            0x4C
 104 #define ADP5589_GENERAL_CFG             0x4D
 105 #define ADP5589_INT_EN                  0x4E
 106
 107 /* ADP5585 Registers */
 108 #define ADP5585_GPI_STATUS_A            0x15
 109 #define ADP5585_GPI_STATUS_B            0x16
 110 #define ADP5585_RPULL_CONFIG_A          0x17
 111 #define ADP5585_RPULL_CONFIG_B          0x18
 112 #define ADP5585_RPULL_CONFIG_C          0x19
 113 #define ADP5585_RPULL_CONFIG_D          0x1A
 114 #define ADP5585_GPI_INT_LEVEL_A         0x1B
 115 #define ADP5585_GPI_INT_LEVEL_B         0x1C
 116 #define ADP5585_GPI_EVENT_EN_A          0x1D
 117 #define ADP5585_GPI_EVENT_EN_B          0x1E
 118 #define ADP5585_GPI_INTERRUPT_EN_A      0x1F
 119 #define ADP5585_GPI_INTERRUPT_EN_B      0x20
 120 #define ADP5585_DEBOUNCE_DIS_A          0x21
 121 #define ADP5585_DEBOUNCE_DIS_B          0x22
 122 #define ADP5585_GPO_DATA_OUT_A          0x23
 123 #define ADP5585_GPO_DATA_OUT_B          0x24
 124 #define ADP5585_GPO_OUT_MODE_A          0x25
 125 #define ADP5585_GPO_OUT_MODE_B          0x26
 126 #define ADP5585_GPIO_DIRECTION_A        0x27
 127 #define ADP5585_GPIO_DIRECTION_B        0x28
 128 #define ADP5585_RESET1_EVENT_A          0x29
 129 #define ADP5585_RESET1_EVENT_B          0x2A
 130 #define ADP5585_RESET1_EVENT_C          0x2B
 131 #define ADP5585_RESET2_EVENT_A          0x2C
 132 #define ADP5585_RESET2_EVENT_B          0x2D
 133 #define ADP5585_RESET_CFG               0x2E
 134 #define ADP5585_PWM_OFFT_LOW            0x2F
 135 #define ADP5585_PWM_OFFT_HIGH           0x30
 136 #define ADP5585_PWM_ONT_LOW             0x31
 137 #define ADP5585_PWM_ONT_HIGH            0x32
 138 #define ADP5585_PWM_CFG                 0x33
 139 #define ADP5585_LOGIC_CFG               0x34
 140 #define ADP5585_LOGIC_FF_CFG            0x35
 141 #define ADP5585_LOGIC_INT_EVENT_EN      0x36
 142 #define ADP5585_POLL_PTIME_CFG          0x37
 143 #define ADP5585_PIN_CONFIG_A            0x38
 144 #define ADP5585_PIN_CONFIG_B            0x39
 145 #define ADP5585_PIN_CONFIG_D            0x3A
 146 #define ADP5585_GENERAL_CFG             0x3B
 147 #define ADP5585_INT_EN                  0x3C
 148
 149 /* ID Register */
 150 #define ADP5589_5_DEVICE_ID_MASK        0xF
 151 #define ADP5589_5_MAN_ID_MASK           0xF
 152 #define ADP5589_5_MAN_ID_SHIFT          4
 153 #define ADP5589_5_MAN_ID                0x02
 154
 155 /* GENERAL_CFG Register */
 156 #define OSC_EN          (1 << 7)
 157 #define CORE_CLK(x)     (((x) & 0x3) << 5)
 158 #define LCK_TRK_LOGIC   (1 << 4)        /* ADP5589 only */
 159 #define LCK_TRK_GPI     (1 << 3)        /* ADP5589 only */
 160 #define INT_CFG         (1 << 1)
 161 #define RST_CFG         (1 << 0)
 162
 163 /* INT_EN Register */
 164 #define LOGIC2_IEN      (1 << 5)        /* ADP5589 only */
 165 #define LOGIC1_IEN      (1 << 4)
 166 #define LOCK_IEN        (1 << 3)        /* ADP5589 only */
 167 #define OVRFLOW_IEN     (1 << 2)
 168 #define GPI_IEN         (1 << 1)
 169 #define EVENT_IEN       (1 << 0)
 170
 171 /* Interrupt Status Register */
 172 #define LOGIC2_INT      (1 << 5)        /* ADP5589 only */
 173 #define LOGIC1_INT      (1 << 4)
 174 #define LOCK_INT        (1 << 3)        /* ADP5589 only */
 175 #define OVRFLOW_INT     (1 << 2)
 176 #define GPI_INT         (1 << 1)
 177 #define EVENT_INT       (1 << 0)
 178
 179 /* STATUS Register */
 180 #define LOGIC2_STAT     (1 << 7)        /* ADP5589 only */
 181 #define LOGIC1_STAT     (1 << 6)
 182 #define LOCK_STAT       (1 << 5)        /* ADP5589 only */
 183 #define KEC             0x1F
 184
 185 /* PIN_CONFIG_D Register */
 186 #define C4_EXTEND_CFG   (1 << 6)        /* RESET2 */
 187 #define R4_EXTEND_CFG   (1 << 5)        /* RESET1 */
 188
 189 /* LOCK_CFG */
 190 #define LOCK_EN         (1 << 0)
 191
 192 #define PTIME_MASK      0x3
 193 #define LTIME_MASK      0x3             /* ADP5589 only */
 194
 195 /* Key Event Register xy */
 196 #define KEY_EV_PRESSED          (1 << 7)
 197 #define KEY_EV_MASK             (0x7F)
 198
 199 #define KEYP_MAX_EVENT          16
 200 #define ADP5589_MAXGPIO         19
 201 #define ADP5585_MAXGPIO         11 /* 10 on the ADP5585-01, 11 on ADP5585-02 */
 202
 203 enum {
 204         ADP5589,
 205         ADP5585_01,
 206         ADP5585_02
 207 };
 208
 209 struct adp_constants {
 210         u8 maxgpio;
 211         u8 keymapsize;
 212         u8 gpi_pin_row_base;
 213         u8 gpi_pin_row_end;
 214         u8 gpi_pin_col_base;
 215         u8 gpi_pin_base;
 216         u8 gpi_pin_end;
 217         u8 gpimapsize_max;
 218         u8 max_row_num;
 219         u8 max_col_num;
 220         u8 row_mask;
 221         u8 col_mask;
 222         u8 col_shift;
 223         u8 c4_extend_cfg;
 224         u8 (*bank) (u8 offset);
 225         u8 (*bit) (u8 offset);
 226         u8 (*reg) (u8 reg);
 227 };
 228
 229 struct adp5589_kpad {
 230         struct i2c_client *client;
 231         struct input_dev *input;
 232         const struct adp_constants *var;
 233         unsigned short keycode[ADP5589_KEYMAPSIZE];
 234         const struct adp5589_gpi_map *gpimap;
 235         unsigned short gpimapsize;
 236         unsigned extend_cfg;
 237         bool is_adp5585;
 238         bool adp5585_support_row5;
 239 #ifdef CONFIG_GPIOLIB
 240         unsigned char gpiomap[ADP5589_MAXGPIO];
 241         bool export_gpio;
 242         struct gpio_chip gc;
 243         struct mutex gpio_lock; /* Protect cached dir, dat_out */
 244         u8 dat_out[3];
 245         u8 dir[3];
 246 #endif
 247 };
 248
 249 /*
 250  *  ADP5589 / ADP5585 derivative / variant handling
 251  */
 252
 253
 254 /* ADP5589 */
 255
 256 static unsigned char adp5589_bank(unsigned char offset)
 257 {
 258         return offset >> 3;
 259 }
 260
 261 static unsigned char adp5589_bit(unsigned char offset)
 262 {
 263         return 1u << (offset & 0x7);
 264 }
 265
 266 static unsigned char adp5589_reg(unsigned char reg)
 267 {
 268         return reg;
 269 }
 270
 271 static const struct adp_constants const_adp5589 = {
 272         .maxgpio                = ADP5589_MAXGPIO,
 273         .keymapsize             = ADP5589_KEYMAPSIZE,
 274         .gpi_pin_row_base       = ADP5589_GPI_PIN_ROW_BASE,
 275         .gpi_pin_row_end        = ADP5589_GPI_PIN_ROW_END,
 276         .gpi_pin_col_base       = ADP5589_GPI_PIN_COL_BASE,
 277         .gpi_pin_base           = ADP5589_GPI_PIN_BASE,
 278         .gpi_pin_end            = ADP5589_GPI_PIN_END,
 279         .gpimapsize_max         = ADP5589_GPIMAPSIZE_MAX,
 280         .c4_extend_cfg          = 12,
 281         .max_row_num            = ADP5589_MAX_ROW_NUM,
 282         .max_col_num            = ADP5589_MAX_COL_NUM,
 283         .row_mask               = ADP5589_ROW_MASK,
 284         .col_mask               = ADP5589_COL_MASK,
 285         .col_shift              = ADP5589_COL_SHIFT,
 286         .bank                   = adp5589_bank,
 287         .bit                    = adp5589_bit,
 288         .reg                    = adp5589_reg,
 289 };
 290
 291 /* ADP5585 */
 292
 293 static unsigned char adp5585_bank(unsigned char offset)
 294 {
 295         return offset > ADP5585_MAX_ROW_NUM;
 296 }
 297
 298 static unsigned char adp5585_bit(unsigned char offset)
 299 {
 300         return (offset > ADP5585_MAX_ROW_NUM) ?
 301                 1u << (offset - ADP5585_COL_SHIFT) : 1u << offset;
 302 }
 303
 304 static const unsigned char adp5585_reg_lut[] = {
 305         [ADP5589_GPI_STATUS_A]          = ADP5585_GPI_STATUS_A,
 306         [ADP5589_GPI_STATUS_B]          = ADP5585_GPI_STATUS_B,
 307         [ADP5589_RPULL_CONFIG_A]        = ADP5585_RPULL_CONFIG_A,
 308         [ADP5589_RPULL_CONFIG_B]        = ADP5585_RPULL_CONFIG_B,
 309         [ADP5589_RPULL_CONFIG_C]        = ADP5585_RPULL_CONFIG_C,
 310         [ADP5589_RPULL_CONFIG_D]        = ADP5585_RPULL_CONFIG_D,
 311         [ADP5589_GPI_INT_LEVEL_A]       = ADP5585_GPI_INT_LEVEL_A,
 312         [ADP5589_GPI_INT_LEVEL_B]       = ADP5585_GPI_INT_LEVEL_B,
 313         [ADP5589_GPI_EVENT_EN_A]        = ADP5585_GPI_EVENT_EN_A,
 314         [ADP5589_GPI_EVENT_EN_B]        = ADP5585_GPI_EVENT_EN_B,
 315         [ADP5589_GPI_INTERRUPT_EN_A]    = ADP5585_GPI_INTERRUPT_EN_A,
 316         [ADP5589_GPI_INTERRUPT_EN_B]    = ADP5585_GPI_INTERRUPT_EN_B,
 317         [ADP5589_DEBOUNCE_DIS_A]        = ADP5585_DEBOUNCE_DIS_A,
 318         [ADP5589_DEBOUNCE_DIS_B]        = ADP5585_DEBOUNCE_DIS_B,
 319         [ADP5589_GPO_DATA_OUT_A]        = ADP5585_GPO_DATA_OUT_A,
 320         [ADP5589_GPO_DATA_OUT_B]        = ADP5585_GPO_DATA_OUT_B,
 321         [ADP5589_GPO_OUT_MODE_A]        = ADP5585_GPO_OUT_MODE_A,
 322         [ADP5589_GPO_OUT_MODE_B]        = ADP5585_GPO_OUT_MODE_B,
 323         [ADP5589_GPIO_DIRECTION_A]      = ADP5585_GPIO_DIRECTION_A,
 324         [ADP5589_GPIO_DIRECTION_B]      = ADP5585_GPIO_DIRECTION_B,
 325         [ADP5589_RESET1_EVENT_A]        = ADP5585_RESET1_EVENT_A,
 326         [ADP5589_RESET1_EVENT_B]        = ADP5585_RESET1_EVENT_B,
 327         [ADP5589_RESET1_EVENT_C]        = ADP5585_RESET1_EVENT_C,
 328         [ADP5589_RESET2_EVENT_A]        = ADP5585_RESET2_EVENT_A,
 329         [ADP5589_RESET2_EVENT_B]        = ADP5585_RESET2_EVENT_B,
 330         [ADP5589_RESET_CFG]             = ADP5585_RESET_CFG,
 331         [ADP5589_PWM_OFFT_LOW]          = ADP5585_PWM_OFFT_LOW,
 332         [ADP5589_PWM_OFFT_HIGH]         = ADP5585_PWM_OFFT_HIGH,
 333         [ADP5589_PWM_ONT_LOW]           = ADP5585_PWM_ONT_LOW,
 334         [ADP5589_PWM_ONT_HIGH]          = ADP5585_PWM_ONT_HIGH,
 335         [ADP5589_PWM_CFG]               = ADP5585_PWM_CFG,
 336         [ADP5589_LOGIC_1_CFG]           = ADP5585_LOGIC_CFG,
 337         [ADP5589_LOGIC_FF_CFG]          = ADP5585_LOGIC_FF_CFG,
 338         [ADP5589_LOGIC_INT_EVENT_EN]    = ADP5585_LOGIC_INT_EVENT_EN,
 339         [ADP5589_POLL_PTIME_CFG]        = ADP5585_POLL_PTIME_CFG,
 340         [ADP5589_PIN_CONFIG_A]          = ADP5585_PIN_CONFIG_A,
 341         [ADP5589_PIN_CONFIG_B]          = ADP5585_PIN_CONFIG_B,
 342         [ADP5589_PIN_CONFIG_D]          = ADP5585_PIN_CONFIG_D,
 343         [ADP5589_GENERAL_CFG]           = ADP5585_GENERAL_CFG,
 344         [ADP5589_INT_EN]                = ADP5585_INT_EN,
 345 };
 346
 347 static unsigned char adp5585_reg(unsigned char reg)
 348 {
 349         return adp5585_reg_lut[reg];
 350 }
 351
 352 static const struct adp_constants const_adp5585 = {
 353         .maxgpio                = ADP5585_MAXGPIO,
 354         .keymapsize             = ADP5585_KEYMAPSIZE,
 355         .gpi_pin_row_base       = ADP5585_GPI_PIN_ROW_BASE,
 356         .gpi_pin_row_end        = ADP5585_GPI_PIN_ROW_END,
 357         .gpi_pin_col_base       = ADP5585_GPI_PIN_COL_BASE,
 358         .gpi_pin_base           = ADP5585_GPI_PIN_BASE,
 359         .gpi_pin_end            = ADP5585_GPI_PIN_END,
 360         .gpimapsize_max         = ADP5585_GPIMAPSIZE_MAX,
 361         .c4_extend_cfg          = 10,
 362         .max_row_num            = ADP5585_MAX_ROW_NUM,
 363         .max_col_num            = ADP5585_MAX_COL_NUM,
 364         .row_mask               = ADP5585_ROW_MASK,
 365         .col_mask               = ADP5585_COL_MASK,
 366         .col_shift              = ADP5585_COL_SHIFT,
 367         .bank                   = adp5585_bank,
 368         .bit                    = adp5585_bit,
 369         .reg                    = adp5585_reg,
 370 };
 371
 372 static int adp5589_read(struct i2c_client *client, u8 reg)
 373 {
 374         int ret = i2c_smbus_read_byte_data(client, reg);
 375
 376         if (ret < 0)
 377                 dev_err(&client->dev, "Read Error\n");
 378
 379         return ret;
 380 }
 381
 382 static int adp5589_write(struct i2c_client *client, u8 reg, u8 val)
 383 {
 384         return i2c_smbus_write_byte_data(client, reg, val);
 385 }
 386
 387 #ifdef CONFIG_GPIOLIB
 388 static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off)
 389 {
 390         struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
 391         unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
 392         unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
 393
 394         return !!(adp5589_read(kpad->client,
 395                                kpad->var->reg(ADP5589_GPI_STATUS_A) + bank) &
 396                                bit);
 397 }
 398
 399 static void adp5589_gpio_set_value(struct gpio_chip *chip,
 400                                    unsigned off, int val)
 401 {
 402         struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
 403         unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
 404         unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
 405
 406         mutex_lock(&kpad->gpio_lock);
 407
 408         if (val)
 409                 kpad->dat_out[bank] |= bit;
 410         else
 411                 kpad->dat_out[bank] &= ~bit;
 412
 413         adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) +
 414                       bank, kpad->dat_out[bank]);
 415
 416         mutex_unlock(&kpad->gpio_lock);
 417 }
 418
 419 static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off)
 420 {
 421         struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
 422         unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
 423         unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
 424         int ret;
 425
 426         mutex_lock(&kpad->gpio_lock);
 427
 428         kpad->dir[bank] &= ~bit;
 429         ret = adp5589_write(kpad->client,
 430                             kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank,
 431                             kpad->dir[bank]);
 432
 433         mutex_unlock(&kpad->gpio_lock);
 434
 435         return ret;
 436 }
 437
 438 static int adp5589_gpio_direction_output(struct gpio_chip *chip,
 439                                          unsigned off, int val)
 440 {
 441         struct adp5589_kpad *kpad = container_of(chip, struct adp5589_kpad, gc);
 442         unsigned int bank = kpad->var->bank(kpad->gpiomap[off]);
 443         unsigned int bit = kpad->var->bit(kpad->gpiomap[off]);
 444         int ret;
 445
 446         mutex_lock(&kpad->gpio_lock);
 447
 448         kpad->dir[bank] |= bit;
 449
 450         if (val)
 451                 kpad->dat_out[bank] |= bit;
 452         else
 453                 kpad->dat_out[bank] &= ~bit;
 454
 455         ret = adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A)
 456                             + bank, kpad->dat_out[bank]);
 457         ret |= adp5589_write(kpad->client,
 458                              kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank,
 459                              kpad->dir[bank]);
 460
 461         mutex_unlock(&kpad->gpio_lock);
 462
 463         return ret;
 464 }
 465
 466 static int adp5589_build_gpiomap(struct adp5589_kpad *kpad,
 467                                 const struct adp5589_kpad_platform_data *pdata)
 468 {
 469         bool pin_used[ADP5589_MAXGPIO];
 470         int n_unused = 0;
 471         int i;
 472
 473         memset(pin_used, false, sizeof(pin_used));
 474
 475         for (i = 0; i < kpad->var->maxgpio; i++)
 476                 if (pdata->keypad_en_mask & (1 << i))
 477                         pin_used[i] = true;
 478
 479         for (i = 0; i < kpad->gpimapsize; i++)
 480                 pin_used[kpad->gpimap[i].pin - kpad->var->gpi_pin_base] = true;
 481
 482         if (kpad->extend_cfg & R4_EXTEND_CFG)
 483                 pin_used[4] = true;
 484
 485         if (kpad->extend_cfg & C4_EXTEND_CFG)
 486                 pin_used[kpad->var->c4_extend_cfg] = true;
 487
 488         if (!kpad->adp5585_support_row5)
 489                 pin_used[5] = true;
 490
 491         for (i = 0; i < kpad->var->maxgpio; i++)
 492                 if (!pin_used[i])
 493                         kpad->gpiomap[n_unused++] = i;
 494
 495         return n_unused;
 496 }
 497
 498 static int adp5589_gpio_add(struct adp5589_kpad *kpad)
 499 {
 500         struct device *dev = &kpad->client->dev;
 501         const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
 502         const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
 503         int i, error;
 504
 505         if (!gpio_data)
 506                 return 0;
 507
 508         kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata);
 509         if (kpad->gc.ngpio == 0) {
 510                 dev_info(dev, "No unused gpios left to export\n");
 511                 return 0;
 512         }
 513
 514         kpad->export_gpio = true;
 515
 516         kpad->gc.direction_input = adp5589_gpio_direction_input;
 517         kpad->gc.direction_output = adp5589_gpio_direction_output;
 518         kpad->gc.get = adp5589_gpio_get_value;
 519         kpad->gc.set = adp5589_gpio_set_value;
 520         kpad->gc.can_sleep = 1;
 521
 522         kpad->gc.base = gpio_data->gpio_start;
 523         kpad->gc.label = kpad->client->name;
 524         kpad->gc.owner = THIS_MODULE;
 525
 526         mutex_init(&kpad->gpio_lock);
 527
 528         error = gpiochip_add(&kpad->gc);
 529         if (error) {
 530                 dev_err(dev, "gpiochip_add failed, err: %d\n", error);
 531                 return error;
 532         }
 533
 534         for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) {
 535                 kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg(
 536                                                 ADP5589_GPO_DATA_OUT_A) + i);
 537                 kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg(
 538                                             ADP5589_GPIO_DIRECTION_A) + i);
 539         }
 540
 541         if (gpio_data->setup) {
 542                 error = gpio_data->setup(kpad->client,
 543                                          kpad->gc.base, kpad->gc.ngpio,
 544                                          gpio_data->context);
 545                 if (error)
 546                         dev_warn(dev, "setup failed, %d\n", error);
 547         }
 548
 549         return 0;
 550 }
 551
 552 static void adp5589_gpio_remove(struct adp5589_kpad *kpad)
 553 {
 554         struct device *dev = &kpad->client->dev;
 555         const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
 556         const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
 557         int error;
 558
 559         if (!kpad->export_gpio)
 560                 return;
 561
 562         if (gpio_data->teardown) {
 563                 error = gpio_data->teardown(kpad->client,
 564                                             kpad->gc.base, kpad->gc.ngpio,
 565                                             gpio_data->context);
 566                 if (error)
 567                         dev_warn(dev, "teardown failed %d\n", error);
 568         }
 569
 570         gpiochip_remove(&kpad->gc);
 571 }
 572 #else
 573 static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
 574 {
 575         return 0;
 576 }
 577
 578 static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad)
 579 {
 580 }
 581 #endif
 582
 583 static void adp5589_report_switches(struct adp5589_kpad *kpad,
 584                                     int key, int key_val)
 585 {
 586         int i;
 587
 588         for (i = 0; i < kpad->gpimapsize; i++) {
 589                 if (key_val == kpad->gpimap[i].pin) {
 590                         input_report_switch(kpad->input,
 591                                             kpad->gpimap[i].sw_evt,
 592                                             key & KEY_EV_PRESSED);
 593                         break;
 594                 }
 595         }
 596 }
 597
 598 static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt)
 599 {
 600         int i;
 601
 602         for (i = 0; i < ev_cnt; i++) {
 603                 int key = adp5589_read(kpad->client, ADP5589_5_FIFO_1 + i);
 604                 int key_val = key & KEY_EV_MASK;
 605
 606                 if (key_val >= kpad->var->gpi_pin_base &&
 607                     key_val <= kpad->var->gpi_pin_end) {
 608                         adp5589_report_switches(kpad, key, key_val);
 609                 } else {
 610                         input_report_key(kpad->input,
 611                                          kpad->keycode[key_val - 1],
 612                                          key & KEY_EV_PRESSED);
 613                 }
 614         }
 615 }
 616
 617 static irqreturn_t adp5589_irq(int irq, void *handle)
 618 {
 619         struct adp5589_kpad *kpad = handle;
 620         struct i2c_client *client = kpad->client;
 621         int status, ev_cnt;
 622
 623         status = adp5589_read(client, ADP5589_5_INT_STATUS);
 624
 625         if (status & OVRFLOW_INT)       /* Unlikely and should never happen */
 626                 dev_err(&client->dev, "Event Overflow Error\n");
 627
 628         if (status & EVENT_INT) {
 629                 ev_cnt = adp5589_read(client, ADP5589_5_STATUS) & KEC;
 630                 if (ev_cnt) {
 631                         adp5589_report_events(kpad, ev_cnt);
 632                         input_sync(kpad->input);
 633                 }
 634         }
 635
 636         adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */
 637
 638         return IRQ_HANDLED;
 639 }
 640
 641 static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key)
 642 {
 643         int i;
 644
 645         for (i = 0; i < kpad->var->keymapsize; i++)
 646                 if (key == kpad->keycode[i])
 647                         return (i + 1) | KEY_EV_PRESSED;
 648
 649         dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n");
 650
 651         return -EINVAL;
 652 }
 653
 654 static int adp5589_setup(struct adp5589_kpad *kpad)
 655 {
 656         struct i2c_client *client = kpad->client;
 657         const struct adp5589_kpad_platform_data *pdata =
 658                 dev_get_platdata(&client->dev);
 659         u8 (*reg) (u8) = kpad->var->reg;
 660         unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
 661         unsigned char pull_mask = 0;
 662         int i, ret;
 663
 664         ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A),
 665                             pdata->keypad_en_mask & kpad->var->row_mask);
 666         ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B),
 667                              (pdata->keypad_en_mask >> kpad->var->col_shift) &
 668                              kpad->var->col_mask);
 669
 670         if (!kpad->is_adp5585)
 671                 ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C,
 672                                      (pdata->keypad_en_mask >> 16) & 0xFF);
 673
 674         if (!kpad->is_adp5585 && pdata->en_keylock) {
 675                 ret |= adp5589_write(client, ADP5589_UNLOCK1,
 676                                      pdata->unlock_key1);
 677                 ret |= adp5589_write(client, ADP5589_UNLOCK2,
 678                                      pdata->unlock_key2);
 679                 ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS,
 680                                      pdata->unlock_timer & LTIME_MASK);
 681                 ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN);
 682         }
 683
 684         for (i = 0; i < KEYP_MAX_EVENT; i++)
 685                 ret |= adp5589_read(client, ADP5589_5_FIFO_1 + i);
 686
 687         for (i = 0; i < pdata->gpimapsize; i++) {
 688                 unsigned short pin = pdata->gpimap[i].pin;
 689
 690                 if (pin <= kpad->var->gpi_pin_row_end) {
 691                         evt_mode1 |= (1 << (pin - kpad->var->gpi_pin_row_base));
 692                 } else {
 693                         evt_mode2 |=
 694                             ((1 << (pin - kpad->var->gpi_pin_col_base)) & 0xFF);
 695                         if (!kpad->is_adp5585)
 696                                 evt_mode3 |= ((1 << (pin -
 697                                         kpad->var->gpi_pin_col_base)) >> 8);
 698                 }
 699         }
 700
 701         if (pdata->gpimapsize) {
 702                 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A),
 703                                      evt_mode1);
 704                 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B),
 705                                      evt_mode2);
 706                 if (!kpad->is_adp5585)
 707                         ret |= adp5589_write(client,
 708                                              reg(ADP5589_GPI_EVENT_EN_C),
 709                                              evt_mode3);
 710         }
 711
 712         if (pdata->pull_dis_mask & pdata->pullup_en_100k &
 713                 pdata->pullup_en_300k & pdata->pulldown_en_300k)
 714                 dev_warn(&client->dev, "Conflicting pull resistor config\n");
 715
 716         for (i = 0; i <= kpad->var->max_row_num; i++) {
 717                 unsigned val = 0, bit = (1 << i);
 718                 if (pdata->pullup_en_300k & bit)
 719                         val = 0;
 720                 else if (pdata->pulldown_en_300k & bit)
 721                         val = 1;
 722                 else if (pdata->pullup_en_100k & bit)
 723                         val = 2;
 724                 else if (pdata->pull_dis_mask & bit)
 725                         val = 3;
 726
 727                 pull_mask |= val << (2 * (i & 0x3));
 728
 729                 if (i % 4 == 3 || i == kpad->var->max_row_num) {
 730                         ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A)
 731                                              + (i >> 2), pull_mask);
 732                         pull_mask = 0;
 733                 }
 734         }
 735
 736         for (i = 0; i <= kpad->var->max_col_num; i++) {
 737                 unsigned val = 0, bit = 1 << (i + kpad->var->col_shift);
 738                 if (pdata->pullup_en_300k & bit)
 739                         val = 0;
 740                 else if (pdata->pulldown_en_300k & bit)
 741                         val = 1;
 742                 else if (pdata->pullup_en_100k & bit)
 743                         val = 2;
 744                 else if (pdata->pull_dis_mask & bit)
 745                         val = 3;
 746
 747                 pull_mask |= val << (2 * (i & 0x3));
 748
 749                 if (i % 4 == 3 || i == kpad->var->max_col_num) {
 750                         ret |= adp5589_write(client,
 751                                              reg(ADP5585_RPULL_CONFIG_C) +
 752                                              (i >> 2), pull_mask);
 753                         pull_mask = 0;
 754                 }
 755         }
 756
 757         if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) {
 758                 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A),
 759                                      adp5589_get_evcode(kpad,
 760                                                         pdata->reset1_key_1));
 761                 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B),
 762                                      adp5589_get_evcode(kpad,
 763                                                         pdata->reset1_key_2));
 764                 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_C),
 765                                      adp5589_get_evcode(kpad,
 766                                                         pdata->reset1_key_3));
 767                 kpad->extend_cfg |= R4_EXTEND_CFG;
 768         }
 769
 770         if (pdata->reset2_key_1 && pdata->reset2_key_2) {
 771                 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_A),
 772                                      adp5589_get_evcode(kpad,
 773                                                         pdata->reset2_key_1));
 774                 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_B),
 775                                      adp5589_get_evcode(kpad,
 776                                                         pdata->reset2_key_2));
 777                 kpad->extend_cfg |= C4_EXTEND_CFG;
 778         }
 779
 780         if (kpad->extend_cfg) {
 781                 ret |= adp5589_write(client, reg(ADP5589_RESET_CFG),
 782                                      pdata->reset_cfg);
 783                 ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D),
 784                                      kpad->extend_cfg);
 785         }
 786
 787         ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A),
 788                             pdata->debounce_dis_mask & kpad->var->row_mask);
 789
 790         ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B),
 791                              (pdata->debounce_dis_mask >> kpad->var->col_shift)
 792                              & kpad->var->col_mask);
 793
 794         if (!kpad->is_adp5585)
 795                 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C),
 796                                      (pdata->debounce_dis_mask >> 16) & 0xFF);
 797
 798         ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG),
 799                              pdata->scan_cycle_time & PTIME_MASK);
 800         ret |= adp5589_write(client, ADP5589_5_INT_STATUS,
 801                              (kpad->is_adp5585 ? 0 : LOGIC2_INT) |
 802                              LOGIC1_INT | OVRFLOW_INT |
 803                              (kpad->is_adp5585 ? 0 : LOCK_INT) |
 804                              GPI_INT | EVENT_INT);      /* Status is W1C */
 805
 806         ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG),
 807                              INT_CFG | OSC_EN | CORE_CLK(3));
 808         ret |= adp5589_write(client, reg(ADP5589_INT_EN),
 809                              OVRFLOW_IEN | GPI_IEN | EVENT_IEN);
 810
 811         if (ret < 0) {
 812                 dev_err(&client->dev, "Write Error\n");
 813                 return ret;
 814         }
 815
 816         return 0;
 817 }
 818
 819 static void adp5589_report_switch_state(struct adp5589_kpad *kpad)
 820 {
 821         int gpi_stat_tmp, pin_loc;
 822         int i;
 823         int gpi_stat1 = adp5589_read(kpad->client,
 824                                      kpad->var->reg(ADP5589_GPI_STATUS_A));
 825         int gpi_stat2 = adp5589_read(kpad->client,
 826                                      kpad->var->reg(ADP5589_GPI_STATUS_B));
 827         int gpi_stat3 = !kpad->is_adp5585 ?
 828                         adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0;
 829
 830         for (i = 0; i < kpad->gpimapsize; i++) {
 831                 unsigned short pin = kpad->gpimap[i].pin;
 832
 833                 if (pin <= kpad->var->gpi_pin_row_end) {
 834                         gpi_stat_tmp = gpi_stat1;
 835                         pin_loc = pin - kpad->var->gpi_pin_row_base;
 836                 } else if ((pin - kpad->var->gpi_pin_col_base) < 8) {
 837                         gpi_stat_tmp = gpi_stat2;
 838                         pin_loc = pin - kpad->var->gpi_pin_col_base;
 839                 } else {
 840                         gpi_stat_tmp = gpi_stat3;
 841                         pin_loc = pin - kpad->var->gpi_pin_col_base - 8;
 842                 }
 843
 844                 if (gpi_stat_tmp < 0) {
 845                         dev_err(&kpad->client->dev,
 846                                 "Can't read GPIO_DAT_STAT switch %d, default to OFF\n",
 847                                 pin);
 848                         gpi_stat_tmp = 0;
 849                 }
 850
 851                 input_report_switch(kpad->input,
 852                                     kpad->gpimap[i].sw_evt,
 853                                     !(gpi_stat_tmp & (1 << pin_loc)));
 854         }
 855
 856         input_sync(kpad->input);
 857 }
 858
 859 static int adp5589_probe(struct i2c_client *client,
 860                          const struct i2c_device_id *id)
 861 {
 862         struct adp5589_kpad *kpad;
 863         const struct adp5589_kpad_platform_data *pdata =
 864                 dev_get_platdata(&client->dev);
 865         struct input_dev *input;
 866         unsigned int revid;
 867         int ret, i;
 868         int error;
 869
 870         if (!i2c_check_functionality(client->adapter,
 871                                      I2C_FUNC_SMBUS_BYTE_DATA)) {
 872                 dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
 873                 return -EIO;
 874         }
 875
 876         if (!pdata) {
 877                 dev_err(&client->dev, "no platform data?\n");
 878                 return -EINVAL;
 879         }
 880
 881         kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
 882         if (!kpad)
 883                 return -ENOMEM;
 884
 885         switch (id->driver_data) {
 886         case ADP5585_02:
 887                 kpad->adp5585_support_row5 = true;
 888         case ADP5585_01:
 889                 kpad->is_adp5585 = true;
 890                 kpad->var = &const_adp5585;
 891                 break;
 892         case ADP5589:
 893                 kpad->var = &const_adp5589;
 894                 break;
 895         }
 896
 897         if (!((pdata->keypad_en_mask & kpad->var->row_mask) &&
 898                         (pdata->keypad_en_mask >> kpad->var->col_shift)) ||
 899                         !pdata->keymap) {
 900                 dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
 901                 error = -EINVAL;
 902                 goto err_free_mem;
 903         }
 904
 905         if (pdata->keymapsize != kpad->var->keymapsize) {
 906                 dev_err(&client->dev, "invalid keymapsize\n");
 907                 error = -EINVAL;
 908                 goto err_free_mem;
 909         }
 910
 911         if (!pdata->gpimap && pdata->gpimapsize) {
 912                 dev_err(&client->dev, "invalid gpimap from pdata\n");
 913                 error = -EINVAL;
 914                 goto err_free_mem;
 915         }
 916
 917         if (pdata->gpimapsize > kpad->var->gpimapsize_max) {
 918                 dev_err(&client->dev, "invalid gpimapsize\n");
 919                 error = -EINVAL;
 920                 goto err_free_mem;
 921         }
 922
 923         for (i = 0; i < pdata->gpimapsize; i++) {
 924                 unsigned short pin = pdata->gpimap[i].pin;
 925
 926                 if (pin < kpad->var->gpi_pin_base ||
 927                                 pin > kpad->var->gpi_pin_end) {
 928                         dev_err(&client->dev, "invalid gpi pin data\n");
 929                         error = -EINVAL;
 930                         goto err_free_mem;
 931                 }
 932
 933                 if ((1 << (pin - kpad->var->gpi_pin_row_base)) &
 934                                 pdata->keypad_en_mask) {
 935                         dev_err(&client->dev, "invalid gpi row/col data\n");
 936                         error = -EINVAL;
 937                         goto err_free_mem;
 938                 }
 939         }
 940
 941         if (!client->irq) {
 942                 dev_err(&client->dev, "no IRQ?\n");
 943                 error = -EINVAL;
 944                 goto err_free_mem;
 945         }
 946
 947         input = input_allocate_device();
 948         if (!input) {
 949                 error = -ENOMEM;
 950                 goto err_free_mem;
 951         }
 952
 953         kpad->client = client;
 954         kpad->input = input;
 955
 956         ret = adp5589_read(client, ADP5589_5_ID);
 957         if (ret < 0) {
 958                 error = ret;
 959                 goto err_free_input;
 960         }
 961
 962         revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK;
 963
 964         input->name = client->name;
 965         input->phys = "adp5589-keys/input0";
 966         input->dev.parent = &client->dev;
 967
 968         input_set_drvdata(input, kpad);
 969
 970         input->id.bustype = BUS_I2C;
 971         input->id.vendor = 0x0001;
 972         input->id.product = 0x0001;
 973         input->id.version = revid;
 974
 975         input->keycodesize = sizeof(kpad->keycode[0]);
 976         input->keycodemax = pdata->keymapsize;
 977         input->keycode = kpad->keycode;
 978
 979         memcpy(kpad->keycode, pdata->keymap,
 980                pdata->keymapsize * input->keycodesize);
 981
 982         kpad->gpimap = pdata->gpimap;
 983         kpad->gpimapsize = pdata->gpimapsize;
 984
 985         /* setup input device */
 986         __set_bit(EV_KEY, input->evbit);
 987
 988         if (pdata->repeat)
 989                 __set_bit(EV_REP, input->evbit);
 990
 991         for (i = 0; i < input->keycodemax; i++)
 992                 if (kpad->keycode[i] <= KEY_MAX)
 993                         __set_bit(kpad->keycode[i], input->keybit);
 994         __clear_bit(KEY_RESERVED, input->keybit);
 995
 996         if (kpad->gpimapsize)
 997                 __set_bit(EV_SW, input->evbit);
 998         for (i = 0; i < kpad->gpimapsize; i++)
 999                 __set_bit(kpad->gpimap[i].sw_evt, input->swbit);
1000
1001         error = input_register_device(input);
1002         if (error) {
1003                 dev_err(&client->dev, "unable to register input device\n");
1004                 goto err_free_input;
1005         }
1006
1007         error = request_threaded_irq(client->irq, NULL, adp5589_irq,
1008                                      IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
1009                                      client->dev.driver->name, kpad);
1010         if (error) {
1011                 dev_err(&client->dev, "irq %d busy?\n", client->irq);
1012                 goto err_unreg_dev;
1013         }
1014
1015         error = adp5589_setup(kpad);
1016         if (error)
1017                 goto err_free_irq;
1018
1019         if (kpad->gpimapsize)
1020                 adp5589_report_switch_state(kpad);
1021
1022         error = adp5589_gpio_add(kpad);
1023         if (error)
1024                 goto err_free_irq;
1025
1026         device_init_wakeup(&client->dev, 1);
1027         i2c_set_clientdata(client, kpad);
1028
1029         dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
1030         return 0;
1031
1032 err_free_irq:
1033         free_irq(client->irq, kpad);
1034 err_unreg_dev:
1035         input_unregister_device(input);
1036         input = NULL;
1037 err_free_input:
1038         input_free_device(input);
1039 err_free_mem:
1040         kfree(kpad);
1041
1042         return error;
1043 }
1044
1045 static int adp5589_remove(struct i2c_client *client)
1046 {
1047         struct adp5589_kpad *kpad = i2c_get_clientdata(client);
1048
1049         adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
1050         free_irq(client->irq, kpad);
1051         input_unregister_device(kpad->input);
1052         adp5589_gpio_remove(kpad);
1053         kfree(kpad);
1054
1055         return 0;
1056 }
1057
1058 #ifdef CONFIG_PM_SLEEP
1059 static int adp5589_suspend(struct device *dev)
1060 {
1061         struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1062         struct i2c_client *client = kpad->client;
1063
1064         disable_irq(client->irq);
1065
1066         if (device_may_wakeup(&client->dev))
1067                 enable_irq_wake(client->irq);
1068
1069         return 0;
1070 }
1071
1072 static int adp5589_resume(struct device *dev)
1073 {
1074         struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1075         struct i2c_client *client = kpad->client;
1076
1077         if (device_may_wakeup(&client->dev))
1078                 disable_irq_wake(client->irq);
1079
1080         enable_irq(client->irq);
1081
1082         return 0;
1083 }
1084 #endif
1085
1086 static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
1087
1088 static const struct i2c_device_id adp5589_id[] = {
1089         {"adp5589-keys", ADP5589},
1090         {"adp5585-keys", ADP5585_01},
1091         {"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
1092         {}
1093 };
1094
1095 MODULE_DEVICE_TABLE(i2c, adp5589_id);
1096
1097 static struct i2c_driver adp5589_driver = {
1098         .driver = {
1099                 .name = KBUILD_MODNAME,
1100                 .pm = &adp5589_dev_pm_ops,
1101         },
1102         .probe = adp5589_probe,
1103         .remove = adp5589_remove,
1104         .id_table = adp5589_id,
1105 };
1106
1107 module_i2c_driver(adp5589_driver);
1108
1109 MODULE_LICENSE("GPL");
1110 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
1111 MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");