drivers/input/keyboard/adp5589-keys.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Description:  keypad driver for ADP5589, ADP5585
   4  *               I2C QWERTY Keypad and IO Expander
   5  * Bugs: Enter bugs at http://blackfin.uclinux.org/
   6  *
   7  * Copyright (C) 2010-2011 Analog Devices Inc.
   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 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 = gpiochip_get_data(chip);
 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 = gpiochip_get_data(chip);
 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 = gpiochip_get_data(chip);
 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 = gpiochip_get_data(chip);
 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->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.parent = dev;
 509         kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata);
 510         if (kpad->gc.ngpio == 0) {
 511                 dev_info(dev, "No unused gpios left to export\n");
 512                 return 0;
 513         }
 514
 515         kpad->export_gpio = true;
 516
 517         kpad->gc.direction_input = adp5589_gpio_direction_input;
 518         kpad->gc.direction_output = adp5589_gpio_direction_output;
 519         kpad->gc.get = adp5589_gpio_get_value;
 520         kpad->gc.set = adp5589_gpio_set_value;
 521         kpad->gc.can_sleep = 1;
 522
 523         kpad->gc.base = gpio_data->gpio_start;
 524         kpad->gc.label = kpad->client->name;
 525         kpad->gc.owner = THIS_MODULE;
 526
 527         mutex_init(&kpad->gpio_lock);
 528
 529         error = gpiochip_add_data(&kpad->gc, kpad);
 530         if (error) {
 531                 dev_err(dev, "gpiochip_add_data() failed, err: %d\n", error);
 532                 return error;
 533         }
 534
 535         for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) {
 536                 kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg(
 537                                                 ADP5589_GPO_DATA_OUT_A) + i);
 538                 kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg(
 539                                             ADP5589_GPIO_DIRECTION_A) + i);
 540         }
 541
 542         if (gpio_data->setup) {
 543                 error = gpio_data->setup(kpad->client,
 544                                          kpad->gc.base, kpad->gc.ngpio,
 545                                          gpio_data->context);
 546                 if (error)
 547                         dev_warn(dev, "setup failed, %d\n", error);
 548         }
 549
 550         return 0;
 551 }
 552
 553 static void adp5589_gpio_remove(struct adp5589_kpad *kpad)
 554 {
 555         struct device *dev = &kpad->client->dev;
 556         const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev);
 557         const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data;
 558         int error;
 559
 560         if (!kpad->export_gpio)
 561                 return;
 562
 563         if (gpio_data->teardown) {
 564                 error = gpio_data->teardown(kpad->client,
 565                                             kpad->gc.base, kpad->gc.ngpio,
 566                                             gpio_data->context);
 567                 if (error)
 568                         dev_warn(dev, "teardown failed %d\n", error);
 569         }
 570
 571         gpiochip_remove(&kpad->gc);
 572 }
 573 #else
 574 static inline int adp5589_gpio_add(struct adp5589_kpad *kpad)
 575 {
 576         return 0;
 577 }
 578
 579 static inline void adp5589_gpio_remove(struct adp5589_kpad *kpad)
 580 {
 581 }
 582 #endif
 583
 584 static void adp5589_report_switches(struct adp5589_kpad *kpad,
 585                                     int key, int key_val)
 586 {
 587         int i;
 588
 589         for (i = 0; i < kpad->gpimapsize; i++) {
 590                 if (key_val == kpad->gpimap[i].pin) {
 591                         input_report_switch(kpad->input,
 592                                             kpad->gpimap[i].sw_evt,
 593                                             key & KEY_EV_PRESSED);
 594                         break;
 595                 }
 596         }
 597 }
 598
 599 static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt)
 600 {
 601         int i;
 602
 603         for (i = 0; i < ev_cnt; i++) {
 604                 int key = adp5589_read(kpad->client, ADP5589_5_FIFO_1 + i);
 605                 int key_val = key & KEY_EV_MASK;
 606
 607                 if (key_val >= kpad->var->gpi_pin_base &&
 608                     key_val <= kpad->var->gpi_pin_end) {
 609                         adp5589_report_switches(kpad, key, key_val);
 610                 } else {
 611                         input_report_key(kpad->input,
 612                                          kpad->keycode[key_val - 1],
 613                                          key & KEY_EV_PRESSED);
 614                 }
 615         }
 616 }
 617
 618 static irqreturn_t adp5589_irq(int irq, void *handle)
 619 {
 620         struct adp5589_kpad *kpad = handle;
 621         struct i2c_client *client = kpad->client;
 622         int status, ev_cnt;
 623
 624         status = adp5589_read(client, ADP5589_5_INT_STATUS);
 625
 626         if (status & OVRFLOW_INT)       /* Unlikely and should never happen */
 627                 dev_err(&client->dev, "Event Overflow Error\n");
 628
 629         if (status & EVENT_INT) {
 630                 ev_cnt = adp5589_read(client, ADP5589_5_STATUS) & KEC;
 631                 if (ev_cnt) {
 632                         adp5589_report_events(kpad, ev_cnt);
 633                         input_sync(kpad->input);
 634                 }
 635         }
 636
 637         adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */
 638
 639         return IRQ_HANDLED;
 640 }
 641
 642 static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key)
 643 {
 644         int i;
 645
 646         for (i = 0; i < kpad->var->keymapsize; i++)
 647                 if (key == kpad->keycode[i])
 648                         return (i + 1) | KEY_EV_PRESSED;
 649
 650         dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n");
 651
 652         return -EINVAL;
 653 }
 654
 655 static int adp5589_setup(struct adp5589_kpad *kpad)
 656 {
 657         struct i2c_client *client = kpad->client;
 658         const struct adp5589_kpad_platform_data *pdata =
 659                 dev_get_platdata(&client->dev);
 660         u8 (*reg) (u8) = kpad->var->reg;
 661         unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0;
 662         unsigned char pull_mask = 0;
 663         int i, ret;
 664
 665         ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A),
 666                             pdata->keypad_en_mask & kpad->var->row_mask);
 667         ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B),
 668                              (pdata->keypad_en_mask >> kpad->var->col_shift) &
 669                              kpad->var->col_mask);
 670
 671         if (!kpad->is_adp5585)
 672                 ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C,
 673                                      (pdata->keypad_en_mask >> 16) & 0xFF);
 674
 675         if (!kpad->is_adp5585 && pdata->en_keylock) {
 676                 ret |= adp5589_write(client, ADP5589_UNLOCK1,
 677                                      pdata->unlock_key1);
 678                 ret |= adp5589_write(client, ADP5589_UNLOCK2,
 679                                      pdata->unlock_key2);
 680                 ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS,
 681                                      pdata->unlock_timer & LTIME_MASK);
 682                 ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN);
 683         }
 684
 685         for (i = 0; i < KEYP_MAX_EVENT; i++)
 686                 ret |= adp5589_read(client, ADP5589_5_FIFO_1 + i);
 687
 688         for (i = 0; i < pdata->gpimapsize; i++) {
 689                 unsigned short pin = pdata->gpimap[i].pin;
 690
 691                 if (pin <= kpad->var->gpi_pin_row_end) {
 692                         evt_mode1 |= (1 << (pin - kpad->var->gpi_pin_row_base));
 693                 } else {
 694                         evt_mode2 |=
 695                             ((1 << (pin - kpad->var->gpi_pin_col_base)) & 0xFF);
 696                         if (!kpad->is_adp5585)
 697                                 evt_mode3 |= ((1 << (pin -
 698                                         kpad->var->gpi_pin_col_base)) >> 8);
 699                 }
 700         }
 701
 702         if (pdata->gpimapsize) {
 703                 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A),
 704                                      evt_mode1);
 705                 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B),
 706                                      evt_mode2);
 707                 if (!kpad->is_adp5585)
 708                         ret |= adp5589_write(client,
 709                                              reg(ADP5589_GPI_EVENT_EN_C),
 710                                              evt_mode3);
 711         }
 712
 713         if (pdata->pull_dis_mask & pdata->pullup_en_100k &
 714                 pdata->pullup_en_300k & pdata->pulldown_en_300k)
 715                 dev_warn(&client->dev, "Conflicting pull resistor config\n");
 716
 717         for (i = 0; i <= kpad->var->max_row_num; i++) {
 718                 unsigned val = 0, bit = (1 << i);
 719                 if (pdata->pullup_en_300k & bit)
 720                         val = 0;
 721                 else if (pdata->pulldown_en_300k & bit)
 722                         val = 1;
 723                 else if (pdata->pullup_en_100k & bit)
 724                         val = 2;
 725                 else if (pdata->pull_dis_mask & bit)
 726                         val = 3;
 727
 728                 pull_mask |= val << (2 * (i & 0x3));
 729
 730                 if (i % 4 == 3 || i == kpad->var->max_row_num) {
 731                         ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A)
 732                                              + (i >> 2), pull_mask);
 733                         pull_mask = 0;
 734                 }
 735         }
 736
 737         for (i = 0; i <= kpad->var->max_col_num; i++) {
 738                 unsigned val = 0, bit = 1 << (i + kpad->var->col_shift);
 739                 if (pdata->pullup_en_300k & bit)
 740                         val = 0;
 741                 else if (pdata->pulldown_en_300k & bit)
 742                         val = 1;
 743                 else if (pdata->pullup_en_100k & bit)
 744                         val = 2;
 745                 else if (pdata->pull_dis_mask & bit)
 746                         val = 3;
 747
 748                 pull_mask |= val << (2 * (i & 0x3));
 749
 750                 if (i % 4 == 3 || i == kpad->var->max_col_num) {
 751                         ret |= adp5589_write(client,
 752                                              reg(ADP5585_RPULL_CONFIG_C) +
 753                                              (i >> 2), pull_mask);
 754                         pull_mask = 0;
 755                 }
 756         }
 757
 758         if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) {
 759                 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A),
 760                                      adp5589_get_evcode(kpad,
 761                                                         pdata->reset1_key_1));
 762                 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B),
 763                                      adp5589_get_evcode(kpad,
 764                                                         pdata->reset1_key_2));
 765                 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_C),
 766                                      adp5589_get_evcode(kpad,
 767                                                         pdata->reset1_key_3));
 768                 kpad->extend_cfg |= R4_EXTEND_CFG;
 769         }
 770
 771         if (pdata->reset2_key_1 && pdata->reset2_key_2) {
 772                 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_A),
 773                                      adp5589_get_evcode(kpad,
 774                                                         pdata->reset2_key_1));
 775                 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_B),
 776                                      adp5589_get_evcode(kpad,
 777                                                         pdata->reset2_key_2));
 778                 kpad->extend_cfg |= C4_EXTEND_CFG;
 779         }
 780
 781         if (kpad->extend_cfg) {
 782                 ret |= adp5589_write(client, reg(ADP5589_RESET_CFG),
 783                                      pdata->reset_cfg);
 784                 ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D),
 785                                      kpad->extend_cfg);
 786         }
 787
 788         ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A),
 789                             pdata->debounce_dis_mask & kpad->var->row_mask);
 790
 791         ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B),
 792                              (pdata->debounce_dis_mask >> kpad->var->col_shift)
 793                              & kpad->var->col_mask);
 794
 795         if (!kpad->is_adp5585)
 796                 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C),
 797                                      (pdata->debounce_dis_mask >> 16) & 0xFF);
 798
 799         ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG),
 800                              pdata->scan_cycle_time & PTIME_MASK);
 801         ret |= adp5589_write(client, ADP5589_5_INT_STATUS,
 802                              (kpad->is_adp5585 ? 0 : LOGIC2_INT) |
 803                              LOGIC1_INT | OVRFLOW_INT |
 804                              (kpad->is_adp5585 ? 0 : LOCK_INT) |
 805                              GPI_INT | EVENT_INT);      /* Status is W1C */
 806
 807         ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG),
 808                              INT_CFG | OSC_EN | CORE_CLK(3));
 809         ret |= adp5589_write(client, reg(ADP5589_INT_EN),
 810                              OVRFLOW_IEN | GPI_IEN | EVENT_IEN);
 811
 812         if (ret < 0) {
 813                 dev_err(&client->dev, "Write Error\n");
 814                 return ret;
 815         }
 816
 817         return 0;
 818 }
 819
 820 static void adp5589_report_switch_state(struct adp5589_kpad *kpad)
 821 {
 822         int gpi_stat_tmp, pin_loc;
 823         int i;
 824         int gpi_stat1 = adp5589_read(kpad->client,
 825                                      kpad->var->reg(ADP5589_GPI_STATUS_A));
 826         int gpi_stat2 = adp5589_read(kpad->client,
 827                                      kpad->var->reg(ADP5589_GPI_STATUS_B));
 828         int gpi_stat3 = !kpad->is_adp5585 ?
 829                         adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0;
 830
 831         for (i = 0; i < kpad->gpimapsize; i++) {
 832                 unsigned short pin = kpad->gpimap[i].pin;
 833
 834                 if (pin <= kpad->var->gpi_pin_row_end) {
 835                         gpi_stat_tmp = gpi_stat1;
 836                         pin_loc = pin - kpad->var->gpi_pin_row_base;
 837                 } else if ((pin - kpad->var->gpi_pin_col_base) < 8) {
 838                         gpi_stat_tmp = gpi_stat2;
 839                         pin_loc = pin - kpad->var->gpi_pin_col_base;
 840                 } else {
 841                         gpi_stat_tmp = gpi_stat3;
 842                         pin_loc = pin - kpad->var->gpi_pin_col_base - 8;
 843                 }
 844
 845                 if (gpi_stat_tmp < 0) {
 846                         dev_err(&kpad->client->dev,
 847                                 "Can't read GPIO_DAT_STAT switch %d, default to OFF\n",
 848                                 pin);
 849                         gpi_stat_tmp = 0;
 850                 }
 851
 852                 input_report_switch(kpad->input,
 853                                     kpad->gpimap[i].sw_evt,
 854                                     !(gpi_stat_tmp & (1 << pin_loc)));
 855         }
 856
 857         input_sync(kpad->input);
 858 }
 859
 860 static int adp5589_keypad_add(struct adp5589_kpad *kpad, unsigned int revid)
 861 {
 862         struct i2c_client *client = kpad->client;
 863         const struct adp5589_kpad_platform_data *pdata =
 864                 dev_get_platdata(&client->dev);
 865         struct input_dev *input;
 866         unsigned int i;
 867         int error;
 868
 869         if (!((pdata->keypad_en_mask & kpad->var->row_mask) &&
 870                         (pdata->keypad_en_mask >> kpad->var->col_shift)) ||
 871                         !pdata->keymap) {
 872                 dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
 873                 return -EINVAL;
 874         }
 875
 876         if (pdata->keymapsize != kpad->var->keymapsize) {
 877                 dev_err(&client->dev, "invalid keymapsize\n");
 878                 return -EINVAL;
 879         }
 880
 881         if (!pdata->gpimap && pdata->gpimapsize) {
 882                 dev_err(&client->dev, "invalid gpimap from pdata\n");
 883                 return -EINVAL;
 884         }
 885
 886         if (pdata->gpimapsize > kpad->var->gpimapsize_max) {
 887                 dev_err(&client->dev, "invalid gpimapsize\n");
 888                 return -EINVAL;
 889         }
 890
 891         for (i = 0; i < pdata->gpimapsize; i++) {
 892                 unsigned short pin = pdata->gpimap[i].pin;
 893
 894                 if (pin < kpad->var->gpi_pin_base ||
 895                                 pin > kpad->var->gpi_pin_end) {
 896                         dev_err(&client->dev, "invalid gpi pin data\n");
 897                         return -EINVAL;
 898                 }
 899
 900                 if ((1 << (pin - kpad->var->gpi_pin_row_base)) &
 901                                 pdata->keypad_en_mask) {
 902                         dev_err(&client->dev, "invalid gpi row/col data\n");
 903                         return -EINVAL;
 904                 }
 905         }
 906
 907         if (!client->irq) {
 908                 dev_err(&client->dev, "no IRQ?\n");
 909                 return -EINVAL;
 910         }
 911
 912         input = input_allocate_device();
 913         if (!input)
 914                 return -ENOMEM;
 915
 916         kpad->input = input;
 917
 918         input->name = client->name;
 919         input->phys = "adp5589-keys/input0";
 920         input->dev.parent = &client->dev;
 921
 922         input_set_drvdata(input, kpad);
 923
 924         input->id.bustype = BUS_I2C;
 925         input->id.vendor = 0x0001;
 926         input->id.product = 0x0001;
 927         input->id.version = revid;
 928
 929         input->keycodesize = sizeof(kpad->keycode[0]);
 930         input->keycodemax = pdata->keymapsize;
 931         input->keycode = kpad->keycode;
 932
 933         memcpy(kpad->keycode, pdata->keymap,
 934                pdata->keymapsize * input->keycodesize);
 935
 936         kpad->gpimap = pdata->gpimap;
 937         kpad->gpimapsize = pdata->gpimapsize;
 938
 939         /* setup input device */
 940         __set_bit(EV_KEY, input->evbit);
 941
 942         if (pdata->repeat)
 943                 __set_bit(EV_REP, input->evbit);
 944
 945         for (i = 0; i < input->keycodemax; i++)
 946                 if (kpad->keycode[i] <= KEY_MAX)
 947                         __set_bit(kpad->keycode[i], input->keybit);
 948         __clear_bit(KEY_RESERVED, input->keybit);
 949
 950         if (kpad->gpimapsize)
 951                 __set_bit(EV_SW, input->evbit);
 952         for (i = 0; i < kpad->gpimapsize; i++)
 953                 __set_bit(kpad->gpimap[i].sw_evt, input->swbit);
 954
 955         error = input_register_device(input);
 956         if (error) {
 957                 dev_err(&client->dev, "unable to register input device\n");
 958                 goto err_free_input;
 959         }
 960
 961         error = request_threaded_irq(client->irq, NULL, adp5589_irq,
 962                                      IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
 963                                      client->dev.driver->name, kpad);
 964         if (error) {
 965                 dev_err(&client->dev, "irq %d busy?\n", client->irq);
 966                 goto err_unreg_dev;
 967         }
 968
 969         device_init_wakeup(&client->dev, 1);
 970
 971         return 0;
 972
 973 err_unreg_dev:
 974         input_unregister_device(input);
 975         input = NULL;
 976 err_free_input:
 977         input_free_device(input);
 978
 979         return error;
 980 }
 981
 982 static void adp5589_keypad_remove(struct adp5589_kpad *kpad)
 983 {
 984         if (kpad->input) {
 985                 free_irq(kpad->client->irq, kpad);
 986                 input_unregister_device(kpad->input);
 987         }
 988 }
 989
 990 static int adp5589_probe(struct i2c_client *client,
 991                          const struct i2c_device_id *id)
 992 {
 993         struct adp5589_kpad *kpad;
 994         const struct adp5589_kpad_platform_data *pdata =
 995                 dev_get_platdata(&client->dev);
 996         unsigned int revid;
 997         int error, ret;
 998
 999         if (!i2c_check_functionality(client->adapter,
1000                                      I2C_FUNC_SMBUS_BYTE_DATA)) {
1001                 dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
1002                 return -EIO;
1003         }
1004
1005         if (!pdata) {
1006                 dev_err(&client->dev, "no platform data?\n");
1007                 return -EINVAL;
1008         }
1009
1010         kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
1011         if (!kpad)
1012                 return -ENOMEM;
1013
1014         kpad->client = client;
1015
1016         switch (id->driver_data) {
1017         case ADP5585_02:
1018                 kpad->support_row5 = true;
1019                 fallthrough;
1020         case ADP5585_01:
1021                 kpad->is_adp5585 = true;
1022                 kpad->var = &const_adp5585;
1023                 break;
1024         case ADP5589:
1025                 kpad->support_row5 = true;
1026                 kpad->var = &const_adp5589;
1027                 break;
1028         }
1029
1030         ret = adp5589_read(client, ADP5589_5_ID);
1031         if (ret < 0) {
1032                 error = ret;
1033                 goto err_free_mem;
1034         }
1035
1036         revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK;
1037
1038         if (pdata->keymapsize) {
1039                 error = adp5589_keypad_add(kpad, revid);
1040                 if (error)
1041                         goto err_free_mem;
1042         }
1043
1044         error = adp5589_setup(kpad);
1045         if (error)
1046                 goto err_keypad_remove;
1047
1048         if (kpad->gpimapsize)
1049                 adp5589_report_switch_state(kpad);
1050
1051         error = adp5589_gpio_add(kpad);
1052         if (error)
1053                 goto err_keypad_remove;
1054
1055         i2c_set_clientdata(client, kpad);
1056
1057         dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
1058         return 0;
1059
1060 err_keypad_remove:
1061         adp5589_keypad_remove(kpad);
1062 err_free_mem:
1063         kfree(kpad);
1064
1065         return error;
1066 }
1067
1068 static int adp5589_remove(struct i2c_client *client)
1069 {
1070         struct adp5589_kpad *kpad = i2c_get_clientdata(client);
1071
1072         adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
1073         adp5589_keypad_remove(kpad);
1074         adp5589_gpio_remove(kpad);
1075         kfree(kpad);
1076
1077         return 0;
1078 }
1079
1080 #ifdef CONFIG_PM_SLEEP
1081 static int adp5589_suspend(struct device *dev)
1082 {
1083         struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1084         struct i2c_client *client = kpad->client;
1085
1086         if (!kpad->input)
1087                 return 0;
1088
1089         disable_irq(client->irq);
1090
1091         if (device_may_wakeup(&client->dev))
1092                 enable_irq_wake(client->irq);
1093
1094         return 0;
1095 }
1096
1097 static int adp5589_resume(struct device *dev)
1098 {
1099         struct adp5589_kpad *kpad = dev_get_drvdata(dev);
1100         struct i2c_client *client = kpad->client;
1101
1102         if (!kpad->input)
1103                 return 0;
1104
1105         if (device_may_wakeup(&client->dev))
1106                 disable_irq_wake(client->irq);
1107
1108         enable_irq(client->irq);
1109
1110         return 0;
1111 }
1112 #endif
1113
1114 static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume);
1115
1116 static const struct i2c_device_id adp5589_id[] = {
1117         {"adp5589-keys", ADP5589},
1118         {"adp5585-keys", ADP5585_01},
1119         {"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */
1120         {}
1121 };
1122
1123 MODULE_DEVICE_TABLE(i2c, adp5589_id);
1124
1125 static struct i2c_driver adp5589_driver = {
1126         .driver = {
1127                 .name = KBUILD_MODNAME,
1128                 .pm = &adp5589_dev_pm_ops,
1129         },
1130         .probe = adp5589_probe,
1131         .remove = adp5589_remove,
1132         .id_table = adp5589_id,
1133 };
1134
1135 module_i2c_driver(adp5589_driver);
1136
1137 MODULE_LICENSE("GPL");
1138 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
1139 MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver");