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/bitops.h> 11 #include <linux/module.h> 12 #include <linux/interrupt.h> 13 #include <linux/irq.h> 14 #include <linux/workqueue.h> 15 #include <linux/errno.h> 16 #include <linux/pm.h> 17 #include <linux/pm_wakeirq.h> 18 #include <linux/platform_device.h> 19 #include <linux/input.h> 20 #include <linux/i2c.h> 21 #include <linux/gpio/driver.h> 22 #include <linux/slab.h> 23 24 #include <linux/input/adp5589.h> 25 26 /* ADP5589/ADP5585 Common Registers */ 27 #define ADP5589_5_ID 0x00 28 #define ADP5589_5_INT_STATUS 0x01 29 #define ADP5589_5_STATUS 0x02 30 #define ADP5589_5_FIFO_1 0x03 31 #define ADP5589_5_FIFO_2 0x04 32 #define ADP5589_5_FIFO_3 0x05 33 #define ADP5589_5_FIFO_4 0x06 34 #define ADP5589_5_FIFO_5 0x07 35 #define ADP5589_5_FIFO_6 0x08 36 #define ADP5589_5_FIFO_7 0x09 37 #define ADP5589_5_FIFO_8 0x0A 38 #define ADP5589_5_FIFO_9 0x0B 39 #define ADP5589_5_FIFO_10 0x0C 40 #define ADP5589_5_FIFO_11 0x0D 41 #define ADP5589_5_FIFO_12 0x0E 42 #define ADP5589_5_FIFO_13 0x0F 43 #define ADP5589_5_FIFO_14 0x10 44 #define ADP5589_5_FIFO_15 0x11 45 #define ADP5589_5_FIFO_16 0x12 46 #define ADP5589_5_GPI_INT_STAT_A 0x13 47 #define ADP5589_5_GPI_INT_STAT_B 0x14 48 49 /* ADP5589 Registers */ 50 #define ADP5589_GPI_INT_STAT_C 0x15 51 #define ADP5589_GPI_STATUS_A 0x16 52 #define ADP5589_GPI_STATUS_B 0x17 53 #define ADP5589_GPI_STATUS_C 0x18 54 #define ADP5589_RPULL_CONFIG_A 0x19 55 #define ADP5589_RPULL_CONFIG_B 0x1A 56 #define ADP5589_RPULL_CONFIG_C 0x1B 57 #define ADP5589_RPULL_CONFIG_D 0x1C 58 #define ADP5589_RPULL_CONFIG_E 0x1D 59 #define ADP5589_GPI_INT_LEVEL_A 0x1E 60 #define ADP5589_GPI_INT_LEVEL_B 0x1F 61 #define ADP5589_GPI_INT_LEVEL_C 0x20 62 #define ADP5589_GPI_EVENT_EN_A 0x21 63 #define ADP5589_GPI_EVENT_EN_B 0x22 64 #define ADP5589_GPI_EVENT_EN_C 0x23 65 #define ADP5589_GPI_INTERRUPT_EN_A 0x24 66 #define ADP5589_GPI_INTERRUPT_EN_B 0x25 67 #define ADP5589_GPI_INTERRUPT_EN_C 0x26 68 #define ADP5589_DEBOUNCE_DIS_A 0x27 69 #define ADP5589_DEBOUNCE_DIS_B 0x28 70 #define ADP5589_DEBOUNCE_DIS_C 0x29 71 #define ADP5589_GPO_DATA_OUT_A 0x2A 72 #define ADP5589_GPO_DATA_OUT_B 0x2B 73 #define ADP5589_GPO_DATA_OUT_C 0x2C 74 #define ADP5589_GPO_OUT_MODE_A 0x2D 75 #define ADP5589_GPO_OUT_MODE_B 0x2E 76 #define ADP5589_GPO_OUT_MODE_C 0x2F 77 #define ADP5589_GPIO_DIRECTION_A 0x30 78 #define ADP5589_GPIO_DIRECTION_B 0x31 79 #define ADP5589_GPIO_DIRECTION_C 0x32 80 #define ADP5589_UNLOCK1 0x33 81 #define ADP5589_UNLOCK2 0x34 82 #define ADP5589_EXT_LOCK_EVENT 0x35 83 #define ADP5589_UNLOCK_TIMERS 0x36 84 #define ADP5589_LOCK_CFG 0x37 85 #define ADP5589_RESET1_EVENT_A 0x38 86 #define ADP5589_RESET1_EVENT_B 0x39 87 #define ADP5589_RESET1_EVENT_C 0x3A 88 #define ADP5589_RESET2_EVENT_A 0x3B 89 #define ADP5589_RESET2_EVENT_B 0x3C 90 #define ADP5589_RESET_CFG 0x3D 91 #define ADP5589_PWM_OFFT_LOW 0x3E 92 #define ADP5589_PWM_OFFT_HIGH 0x3F 93 #define ADP5589_PWM_ONT_LOW 0x40 94 #define ADP5589_PWM_ONT_HIGH 0x41 95 #define ADP5589_PWM_CFG 0x42 96 #define ADP5589_CLOCK_DIV_CFG 0x43 97 #define ADP5589_LOGIC_1_CFG 0x44 98 #define ADP5589_LOGIC_2_CFG 0x45 99 #define ADP5589_LOGIC_FF_CFG 0x46 100 #define ADP5589_LOGIC_INT_EVENT_EN 0x47 101 #define ADP5589_POLL_PTIME_CFG 0x48 102 #define ADP5589_PIN_CONFIG_A 0x49 103 #define ADP5589_PIN_CONFIG_B 0x4A 104 #define ADP5589_PIN_CONFIG_C 0x4B 105 #define ADP5589_PIN_CONFIG_D 0x4C 106 #define ADP5589_GENERAL_CFG 0x4D 107 #define ADP5589_INT_EN 0x4E 108 109 /* ADP5585 Registers */ 110 #define ADP5585_GPI_STATUS_A 0x15 111 #define ADP5585_GPI_STATUS_B 0x16 112 #define ADP5585_RPULL_CONFIG_A 0x17 113 #define ADP5585_RPULL_CONFIG_B 0x18 114 #define ADP5585_RPULL_CONFIG_C 0x19 115 #define ADP5585_RPULL_CONFIG_D 0x1A 116 #define ADP5585_GPI_INT_LEVEL_A 0x1B 117 #define ADP5585_GPI_INT_LEVEL_B 0x1C 118 #define ADP5585_GPI_EVENT_EN_A 0x1D 119 #define ADP5585_GPI_EVENT_EN_B 0x1E 120 #define ADP5585_GPI_INTERRUPT_EN_A 0x1F 121 #define ADP5585_GPI_INTERRUPT_EN_B 0x20 122 #define ADP5585_DEBOUNCE_DIS_A 0x21 123 #define ADP5585_DEBOUNCE_DIS_B 0x22 124 #define ADP5585_GPO_DATA_OUT_A 0x23 125 #define ADP5585_GPO_DATA_OUT_B 0x24 126 #define ADP5585_GPO_OUT_MODE_A 0x25 127 #define ADP5585_GPO_OUT_MODE_B 0x26 128 #define ADP5585_GPIO_DIRECTION_A 0x27 129 #define ADP5585_GPIO_DIRECTION_B 0x28 130 #define ADP5585_RESET1_EVENT_A 0x29 131 #define ADP5585_RESET1_EVENT_B 0x2A 132 #define ADP5585_RESET1_EVENT_C 0x2B 133 #define ADP5585_RESET2_EVENT_A 0x2C 134 #define ADP5585_RESET2_EVENT_B 0x2D 135 #define ADP5585_RESET_CFG 0x2E 136 #define ADP5585_PWM_OFFT_LOW 0x2F 137 #define ADP5585_PWM_OFFT_HIGH 0x30 138 #define ADP5585_PWM_ONT_LOW 0x31 139 #define ADP5585_PWM_ONT_HIGH 0x32 140 #define ADP5585_PWM_CFG 0x33 141 #define ADP5585_LOGIC_CFG 0x34 142 #define ADP5585_LOGIC_FF_CFG 0x35 143 #define ADP5585_LOGIC_INT_EVENT_EN 0x36 144 #define ADP5585_POLL_PTIME_CFG 0x37 145 #define ADP5585_PIN_CONFIG_A 0x38 146 #define ADP5585_PIN_CONFIG_B 0x39 147 #define ADP5585_PIN_CONFIG_D 0x3A 148 #define ADP5585_GENERAL_CFG 0x3B 149 #define ADP5585_INT_EN 0x3C 150 151 /* ID Register */ 152 #define ADP5589_5_DEVICE_ID_MASK 0xF 153 #define ADP5589_5_MAN_ID_MASK 0xF 154 #define ADP5589_5_MAN_ID_SHIFT 4 155 #define ADP5589_5_MAN_ID 0x02 156 157 /* GENERAL_CFG Register */ 158 #define OSC_EN BIT(7) 159 #define CORE_CLK(x) (((x) & 0x3) << 5) 160 #define LCK_TRK_LOGIC BIT(4) /* ADP5589 only */ 161 #define LCK_TRK_GPI BIT(3) /* ADP5589 only */ 162 #define INT_CFG BIT(1) 163 #define RST_CFG BIT(0) 164 165 /* INT_EN Register */ 166 #define LOGIC2_IEN BIT(5) /* ADP5589 only */ 167 #define LOGIC1_IEN BIT(4) 168 #define LOCK_IEN BIT(3) /* ADP5589 only */ 169 #define OVRFLOW_IEN BIT(2) 170 #define GPI_IEN BIT(1) 171 #define EVENT_IEN BIT(0) 172 173 /* Interrupt Status Register */ 174 #define LOGIC2_INT BIT(5) /* ADP5589 only */ 175 #define LOGIC1_INT BIT(4) 176 #define LOCK_INT BIT(3) /* ADP5589 only */ 177 #define OVRFLOW_INT BIT(2) 178 #define GPI_INT BIT(1) 179 #define EVENT_INT BIT(0) 180 181 /* STATUS Register */ 182 #define LOGIC2_STAT BIT(7) /* ADP5589 only */ 183 #define LOGIC1_STAT BIT(6) 184 #define LOCK_STAT BIT(5) /* ADP5589 only */ 185 #define KEC 0x1F 186 187 /* PIN_CONFIG_D Register */ 188 #define C4_EXTEND_CFG BIT(6) /* RESET2 */ 189 #define R4_EXTEND_CFG BIT(5) /* RESET1 */ 190 191 /* LOCK_CFG */ 192 #define LOCK_EN BIT(0) 193 194 #define PTIME_MASK 0x3 195 #define LTIME_MASK 0x3 /* ADP5589 only */ 196 197 /* Key Event Register xy */ 198 #define KEY_EV_PRESSED BIT(7) 199 #define KEY_EV_MASK 0x7F 200 201 #define KEYP_MAX_EVENT 16 202 #define ADP5589_MAXGPIO 19 203 #define ADP5585_MAXGPIO 11 /* 10 on the ADP5585-01, 11 on ADP5585-02 */ 204 205 enum { 206 ADP5589, 207 ADP5585_01, 208 ADP5585_02 209 }; 210 211 struct adp_constants { 212 u8 maxgpio; 213 u8 keymapsize; 214 u8 gpi_pin_row_base; 215 u8 gpi_pin_row_end; 216 u8 gpi_pin_col_base; 217 u8 gpi_pin_base; 218 u8 gpi_pin_end; 219 u8 gpimapsize_max; 220 u8 max_row_num; 221 u8 max_col_num; 222 u8 row_mask; 223 u8 col_mask; 224 u8 col_shift; 225 u8 c4_extend_cfg; 226 u8 (*bank) (u8 offset); 227 u8 (*bit) (u8 offset); 228 u8 (*reg) (u8 reg); 229 }; 230 231 struct adp5589_kpad { 232 struct i2c_client *client; 233 struct input_dev *input; 234 const struct adp_constants *var; 235 unsigned short keycode[ADP5589_KEYMAPSIZE]; 236 const struct adp5589_gpi_map *gpimap; 237 unsigned short gpimapsize; 238 unsigned extend_cfg; 239 bool is_adp5585; 240 bool support_row5; 241 #ifdef CONFIG_GPIOLIB 242 unsigned char gpiomap[ADP5589_MAXGPIO]; 243 struct gpio_chip gc; 244 struct mutex gpio_lock; /* Protect cached dir, dat_out */ 245 u8 dat_out[3]; 246 u8 dir[3]; 247 #endif 248 }; 249 250 /* 251 * ADP5589 / ADP5585 derivative / variant handling 252 */ 253 254 255 /* ADP5589 */ 256 257 static unsigned char adp5589_bank(unsigned char offset) 258 { 259 return offset >> 3; 260 } 261 262 static unsigned char adp5589_bit(unsigned char offset) 263 { 264 return 1u << (offset & 0x7); 265 } 266 267 static unsigned char adp5589_reg(unsigned char reg) 268 { 269 return reg; 270 } 271 272 static const struct adp_constants const_adp5589 = { 273 .maxgpio = ADP5589_MAXGPIO, 274 .keymapsize = ADP5589_KEYMAPSIZE, 275 .gpi_pin_row_base = ADP5589_GPI_PIN_ROW_BASE, 276 .gpi_pin_row_end = ADP5589_GPI_PIN_ROW_END, 277 .gpi_pin_col_base = ADP5589_GPI_PIN_COL_BASE, 278 .gpi_pin_base = ADP5589_GPI_PIN_BASE, 279 .gpi_pin_end = ADP5589_GPI_PIN_END, 280 .gpimapsize_max = ADP5589_GPIMAPSIZE_MAX, 281 .c4_extend_cfg = 12, 282 .max_row_num = ADP5589_MAX_ROW_NUM, 283 .max_col_num = ADP5589_MAX_COL_NUM, 284 .row_mask = ADP5589_ROW_MASK, 285 .col_mask = ADP5589_COL_MASK, 286 .col_shift = ADP5589_COL_SHIFT, 287 .bank = adp5589_bank, 288 .bit = adp5589_bit, 289 .reg = adp5589_reg, 290 }; 291 292 /* ADP5585 */ 293 294 static unsigned char adp5585_bank(unsigned char offset) 295 { 296 return offset > ADP5585_MAX_ROW_NUM; 297 } 298 299 static unsigned char adp5585_bit(unsigned char offset) 300 { 301 return (offset > ADP5585_MAX_ROW_NUM) ? 302 1u << (offset - ADP5585_COL_SHIFT) : 1u << offset; 303 } 304 305 static const unsigned char adp5585_reg_lut[] = { 306 [ADP5589_GPI_STATUS_A] = ADP5585_GPI_STATUS_A, 307 [ADP5589_GPI_STATUS_B] = ADP5585_GPI_STATUS_B, 308 [ADP5589_RPULL_CONFIG_A] = ADP5585_RPULL_CONFIG_A, 309 [ADP5589_RPULL_CONFIG_B] = ADP5585_RPULL_CONFIG_B, 310 [ADP5589_RPULL_CONFIG_C] = ADP5585_RPULL_CONFIG_C, 311 [ADP5589_RPULL_CONFIG_D] = ADP5585_RPULL_CONFIG_D, 312 [ADP5589_GPI_INT_LEVEL_A] = ADP5585_GPI_INT_LEVEL_A, 313 [ADP5589_GPI_INT_LEVEL_B] = ADP5585_GPI_INT_LEVEL_B, 314 [ADP5589_GPI_EVENT_EN_A] = ADP5585_GPI_EVENT_EN_A, 315 [ADP5589_GPI_EVENT_EN_B] = ADP5585_GPI_EVENT_EN_B, 316 [ADP5589_GPI_INTERRUPT_EN_A] = ADP5585_GPI_INTERRUPT_EN_A, 317 [ADP5589_GPI_INTERRUPT_EN_B] = ADP5585_GPI_INTERRUPT_EN_B, 318 [ADP5589_DEBOUNCE_DIS_A] = ADP5585_DEBOUNCE_DIS_A, 319 [ADP5589_DEBOUNCE_DIS_B] = ADP5585_DEBOUNCE_DIS_B, 320 [ADP5589_GPO_DATA_OUT_A] = ADP5585_GPO_DATA_OUT_A, 321 [ADP5589_GPO_DATA_OUT_B] = ADP5585_GPO_DATA_OUT_B, 322 [ADP5589_GPO_OUT_MODE_A] = ADP5585_GPO_OUT_MODE_A, 323 [ADP5589_GPO_OUT_MODE_B] = ADP5585_GPO_OUT_MODE_B, 324 [ADP5589_GPIO_DIRECTION_A] = ADP5585_GPIO_DIRECTION_A, 325 [ADP5589_GPIO_DIRECTION_B] = ADP5585_GPIO_DIRECTION_B, 326 [ADP5589_RESET1_EVENT_A] = ADP5585_RESET1_EVENT_A, 327 [ADP5589_RESET1_EVENT_B] = ADP5585_RESET1_EVENT_B, 328 [ADP5589_RESET1_EVENT_C] = ADP5585_RESET1_EVENT_C, 329 [ADP5589_RESET2_EVENT_A] = ADP5585_RESET2_EVENT_A, 330 [ADP5589_RESET2_EVENT_B] = ADP5585_RESET2_EVENT_B, 331 [ADP5589_RESET_CFG] = ADP5585_RESET_CFG, 332 [ADP5589_PWM_OFFT_LOW] = ADP5585_PWM_OFFT_LOW, 333 [ADP5589_PWM_OFFT_HIGH] = ADP5585_PWM_OFFT_HIGH, 334 [ADP5589_PWM_ONT_LOW] = ADP5585_PWM_ONT_LOW, 335 [ADP5589_PWM_ONT_HIGH] = ADP5585_PWM_ONT_HIGH, 336 [ADP5589_PWM_CFG] = ADP5585_PWM_CFG, 337 [ADP5589_LOGIC_1_CFG] = ADP5585_LOGIC_CFG, 338 [ADP5589_LOGIC_FF_CFG] = ADP5585_LOGIC_FF_CFG, 339 [ADP5589_LOGIC_INT_EVENT_EN] = ADP5585_LOGIC_INT_EVENT_EN, 340 [ADP5589_POLL_PTIME_CFG] = ADP5585_POLL_PTIME_CFG, 341 [ADP5589_PIN_CONFIG_A] = ADP5585_PIN_CONFIG_A, 342 [ADP5589_PIN_CONFIG_B] = ADP5585_PIN_CONFIG_B, 343 [ADP5589_PIN_CONFIG_D] = ADP5585_PIN_CONFIG_D, 344 [ADP5589_GENERAL_CFG] = ADP5585_GENERAL_CFG, 345 [ADP5589_INT_EN] = ADP5585_INT_EN, 346 }; 347 348 static unsigned char adp5585_reg(unsigned char reg) 349 { 350 return adp5585_reg_lut[reg]; 351 } 352 353 static const struct adp_constants const_adp5585 = { 354 .maxgpio = ADP5585_MAXGPIO, 355 .keymapsize = ADP5585_KEYMAPSIZE, 356 .gpi_pin_row_base = ADP5585_GPI_PIN_ROW_BASE, 357 .gpi_pin_row_end = ADP5585_GPI_PIN_ROW_END, 358 .gpi_pin_col_base = ADP5585_GPI_PIN_COL_BASE, 359 .gpi_pin_base = ADP5585_GPI_PIN_BASE, 360 .gpi_pin_end = ADP5585_GPI_PIN_END, 361 .gpimapsize_max = ADP5585_GPIMAPSIZE_MAX, 362 .c4_extend_cfg = 10, 363 .max_row_num = ADP5585_MAX_ROW_NUM, 364 .max_col_num = ADP5585_MAX_COL_NUM, 365 .row_mask = ADP5585_ROW_MASK, 366 .col_mask = ADP5585_COL_MASK, 367 .col_shift = ADP5585_COL_SHIFT, 368 .bank = adp5585_bank, 369 .bit = adp5585_bit, 370 .reg = adp5585_reg, 371 }; 372 373 static int adp5589_read(struct i2c_client *client, u8 reg) 374 { 375 int ret = i2c_smbus_read_byte_data(client, reg); 376 377 if (ret < 0) 378 dev_err(&client->dev, "Read Error\n"); 379 380 return ret; 381 } 382 383 static int adp5589_write(struct i2c_client *client, u8 reg, u8 val) 384 { 385 return i2c_smbus_write_byte_data(client, reg, val); 386 } 387 388 #ifdef CONFIG_GPIOLIB 389 static int adp5589_gpio_get_value(struct gpio_chip *chip, unsigned off) 390 { 391 struct adp5589_kpad *kpad = gpiochip_get_data(chip); 392 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); 393 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); 394 395 return !!(adp5589_read(kpad->client, 396 kpad->var->reg(ADP5589_GPI_STATUS_A) + bank) & 397 bit); 398 } 399 400 static void adp5589_gpio_set_value(struct gpio_chip *chip, 401 unsigned off, int val) 402 { 403 struct adp5589_kpad *kpad = gpiochip_get_data(chip); 404 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); 405 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); 406 407 mutex_lock(&kpad->gpio_lock); 408 409 if (val) 410 kpad->dat_out[bank] |= bit; 411 else 412 kpad->dat_out[bank] &= ~bit; 413 414 adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) + 415 bank, kpad->dat_out[bank]); 416 417 mutex_unlock(&kpad->gpio_lock); 418 } 419 420 static int adp5589_gpio_direction_input(struct gpio_chip *chip, unsigned off) 421 { 422 struct adp5589_kpad *kpad = gpiochip_get_data(chip); 423 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); 424 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); 425 int ret; 426 427 mutex_lock(&kpad->gpio_lock); 428 429 kpad->dir[bank] &= ~bit; 430 ret = adp5589_write(kpad->client, 431 kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank, 432 kpad->dir[bank]); 433 434 mutex_unlock(&kpad->gpio_lock); 435 436 return ret; 437 } 438 439 static int adp5589_gpio_direction_output(struct gpio_chip *chip, 440 unsigned off, int val) 441 { 442 struct adp5589_kpad *kpad = gpiochip_get_data(chip); 443 unsigned int bank = kpad->var->bank(kpad->gpiomap[off]); 444 unsigned int bit = kpad->var->bit(kpad->gpiomap[off]); 445 int ret; 446 447 mutex_lock(&kpad->gpio_lock); 448 449 kpad->dir[bank] |= bit; 450 451 if (val) 452 kpad->dat_out[bank] |= bit; 453 else 454 kpad->dat_out[bank] &= ~bit; 455 456 ret = adp5589_write(kpad->client, kpad->var->reg(ADP5589_GPO_DATA_OUT_A) 457 + bank, kpad->dat_out[bank]); 458 ret |= adp5589_write(kpad->client, 459 kpad->var->reg(ADP5589_GPIO_DIRECTION_A) + bank, 460 kpad->dir[bank]); 461 462 mutex_unlock(&kpad->gpio_lock); 463 464 return ret; 465 } 466 467 static int adp5589_build_gpiomap(struct adp5589_kpad *kpad, 468 const struct adp5589_kpad_platform_data *pdata) 469 { 470 bool pin_used[ADP5589_MAXGPIO]; 471 int n_unused = 0; 472 int i; 473 474 memset(pin_used, false, sizeof(pin_used)); 475 476 for (i = 0; i < kpad->var->maxgpio; i++) 477 if (pdata->keypad_en_mask & BIT(i)) 478 pin_used[i] = true; 479 480 for (i = 0; i < kpad->gpimapsize; i++) 481 pin_used[kpad->gpimap[i].pin - kpad->var->gpi_pin_base] = true; 482 483 if (kpad->extend_cfg & R4_EXTEND_CFG) 484 pin_used[4] = true; 485 486 if (kpad->extend_cfg & C4_EXTEND_CFG) 487 pin_used[kpad->var->c4_extend_cfg] = true; 488 489 if (!kpad->support_row5) 490 pin_used[5] = true; 491 492 for (i = 0; i < kpad->var->maxgpio; i++) 493 if (!pin_used[i]) 494 kpad->gpiomap[n_unused++] = i; 495 496 return n_unused; 497 } 498 499 static int adp5589_gpio_add(struct adp5589_kpad *kpad) 500 { 501 struct device *dev = &kpad->client->dev; 502 const struct adp5589_kpad_platform_data *pdata = dev_get_platdata(dev); 503 const struct adp5589_gpio_platform_data *gpio_data = pdata->gpio_data; 504 int i, error; 505 506 if (!gpio_data) 507 return 0; 508 509 kpad->gc.parent = dev; 510 kpad->gc.ngpio = adp5589_build_gpiomap(kpad, pdata); 511 if (kpad->gc.ngpio == 0) { 512 dev_info(dev, "No unused gpios left to export\n"); 513 return 0; 514 } 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 = devm_gpiochip_add_data(dev, &kpad->gc, kpad); 529 if (error) 530 return error; 531 532 for (i = 0; i <= kpad->var->bank(kpad->var->maxgpio); i++) { 533 kpad->dat_out[i] = adp5589_read(kpad->client, kpad->var->reg( 534 ADP5589_GPO_DATA_OUT_A) + i); 535 kpad->dir[i] = adp5589_read(kpad->client, kpad->var->reg( 536 ADP5589_GPIO_DIRECTION_A) + i); 537 } 538 539 return 0; 540 } 541 #else 542 static inline int adp5589_gpio_add(struct adp5589_kpad *kpad) 543 { 544 return 0; 545 } 546 #endif 547 548 static void adp5589_report_switches(struct adp5589_kpad *kpad, 549 int key, int key_val) 550 { 551 int i; 552 553 for (i = 0; i < kpad->gpimapsize; i++) { 554 if (key_val == kpad->gpimap[i].pin) { 555 input_report_switch(kpad->input, 556 kpad->gpimap[i].sw_evt, 557 key & KEY_EV_PRESSED); 558 break; 559 } 560 } 561 } 562 563 static void adp5589_report_events(struct adp5589_kpad *kpad, int ev_cnt) 564 { 565 int i; 566 567 for (i = 0; i < ev_cnt; i++) { 568 int key = adp5589_read(kpad->client, ADP5589_5_FIFO_1 + i); 569 int key_val = key & KEY_EV_MASK; 570 571 if (key_val >= kpad->var->gpi_pin_base && 572 key_val <= kpad->var->gpi_pin_end) { 573 adp5589_report_switches(kpad, key, key_val); 574 } else { 575 input_report_key(kpad->input, 576 kpad->keycode[key_val - 1], 577 key & KEY_EV_PRESSED); 578 } 579 } 580 } 581 582 static irqreturn_t adp5589_irq(int irq, void *handle) 583 { 584 struct adp5589_kpad *kpad = handle; 585 struct i2c_client *client = kpad->client; 586 int status, ev_cnt; 587 588 status = adp5589_read(client, ADP5589_5_INT_STATUS); 589 590 if (status & OVRFLOW_INT) /* Unlikely and should never happen */ 591 dev_err(&client->dev, "Event Overflow Error\n"); 592 593 if (status & EVENT_INT) { 594 ev_cnt = adp5589_read(client, ADP5589_5_STATUS) & KEC; 595 if (ev_cnt) { 596 adp5589_report_events(kpad, ev_cnt); 597 input_sync(kpad->input); 598 } 599 } 600 601 adp5589_write(client, ADP5589_5_INT_STATUS, status); /* Status is W1C */ 602 603 return IRQ_HANDLED; 604 } 605 606 static int adp5589_get_evcode(struct adp5589_kpad *kpad, unsigned short key) 607 { 608 int i; 609 610 for (i = 0; i < kpad->var->keymapsize; i++) 611 if (key == kpad->keycode[i]) 612 return (i + 1) | KEY_EV_PRESSED; 613 614 dev_err(&kpad->client->dev, "RESET/UNLOCK key not in keycode map\n"); 615 616 return -EINVAL; 617 } 618 619 static int adp5589_setup(struct adp5589_kpad *kpad) 620 { 621 struct i2c_client *client = kpad->client; 622 const struct adp5589_kpad_platform_data *pdata = 623 dev_get_platdata(&client->dev); 624 u8 (*reg) (u8) = kpad->var->reg; 625 unsigned char evt_mode1 = 0, evt_mode2 = 0, evt_mode3 = 0; 626 unsigned char pull_mask = 0; 627 int i, ret; 628 629 ret = adp5589_write(client, reg(ADP5589_PIN_CONFIG_A), 630 pdata->keypad_en_mask & kpad->var->row_mask); 631 ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_B), 632 (pdata->keypad_en_mask >> kpad->var->col_shift) & 633 kpad->var->col_mask); 634 635 if (!kpad->is_adp5585) 636 ret |= adp5589_write(client, ADP5589_PIN_CONFIG_C, 637 (pdata->keypad_en_mask >> 16) & 0xFF); 638 639 if (!kpad->is_adp5585 && pdata->en_keylock) { 640 ret |= adp5589_write(client, ADP5589_UNLOCK1, 641 pdata->unlock_key1); 642 ret |= adp5589_write(client, ADP5589_UNLOCK2, 643 pdata->unlock_key2); 644 ret |= adp5589_write(client, ADP5589_UNLOCK_TIMERS, 645 pdata->unlock_timer & LTIME_MASK); 646 ret |= adp5589_write(client, ADP5589_LOCK_CFG, LOCK_EN); 647 } 648 649 for (i = 0; i < KEYP_MAX_EVENT; i++) 650 ret |= adp5589_read(client, ADP5589_5_FIFO_1 + i); 651 652 for (i = 0; i < pdata->gpimapsize; i++) { 653 unsigned short pin = pdata->gpimap[i].pin; 654 655 if (pin <= kpad->var->gpi_pin_row_end) { 656 evt_mode1 |= BIT(pin - kpad->var->gpi_pin_row_base); 657 } else { 658 evt_mode2 |= 659 BIT(pin - kpad->var->gpi_pin_col_base) & 0xFF; 660 if (!kpad->is_adp5585) 661 evt_mode3 |= 662 BIT(pin - kpad->var->gpi_pin_col_base) >> 8; 663 } 664 } 665 666 if (pdata->gpimapsize) { 667 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_A), 668 evt_mode1); 669 ret |= adp5589_write(client, reg(ADP5589_GPI_EVENT_EN_B), 670 evt_mode2); 671 if (!kpad->is_adp5585) 672 ret |= adp5589_write(client, 673 reg(ADP5589_GPI_EVENT_EN_C), 674 evt_mode3); 675 } 676 677 if (pdata->pull_dis_mask & pdata->pullup_en_100k & 678 pdata->pullup_en_300k & pdata->pulldown_en_300k) 679 dev_warn(&client->dev, "Conflicting pull resistor config\n"); 680 681 for (i = 0; i <= kpad->var->max_row_num; i++) { 682 unsigned int val = 0, bit = BIT(i); 683 if (pdata->pullup_en_300k & bit) 684 val = 0; 685 else if (pdata->pulldown_en_300k & bit) 686 val = 1; 687 else if (pdata->pullup_en_100k & bit) 688 val = 2; 689 else if (pdata->pull_dis_mask & bit) 690 val = 3; 691 692 pull_mask |= val << (2 * (i & 0x3)); 693 694 if (i % 4 == 3 || i == kpad->var->max_row_num) { 695 ret |= adp5589_write(client, reg(ADP5585_RPULL_CONFIG_A) 696 + (i >> 2), pull_mask); 697 pull_mask = 0; 698 } 699 } 700 701 for (i = 0; i <= kpad->var->max_col_num; i++) { 702 unsigned int val = 0, bit = BIT(i + kpad->var->col_shift); 703 if (pdata->pullup_en_300k & bit) 704 val = 0; 705 else if (pdata->pulldown_en_300k & bit) 706 val = 1; 707 else if (pdata->pullup_en_100k & bit) 708 val = 2; 709 else if (pdata->pull_dis_mask & bit) 710 val = 3; 711 712 pull_mask |= val << (2 * (i & 0x3)); 713 714 if (i % 4 == 3 || i == kpad->var->max_col_num) { 715 ret |= adp5589_write(client, 716 reg(ADP5585_RPULL_CONFIG_C) + 717 (i >> 2), pull_mask); 718 pull_mask = 0; 719 } 720 } 721 722 if (pdata->reset1_key_1 && pdata->reset1_key_2 && pdata->reset1_key_3) { 723 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_A), 724 adp5589_get_evcode(kpad, 725 pdata->reset1_key_1)); 726 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_B), 727 adp5589_get_evcode(kpad, 728 pdata->reset1_key_2)); 729 ret |= adp5589_write(client, reg(ADP5589_RESET1_EVENT_C), 730 adp5589_get_evcode(kpad, 731 pdata->reset1_key_3)); 732 kpad->extend_cfg |= R4_EXTEND_CFG; 733 } 734 735 if (pdata->reset2_key_1 && pdata->reset2_key_2) { 736 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_A), 737 adp5589_get_evcode(kpad, 738 pdata->reset2_key_1)); 739 ret |= adp5589_write(client, reg(ADP5589_RESET2_EVENT_B), 740 adp5589_get_evcode(kpad, 741 pdata->reset2_key_2)); 742 kpad->extend_cfg |= C4_EXTEND_CFG; 743 } 744 745 if (kpad->extend_cfg) { 746 ret |= adp5589_write(client, reg(ADP5589_RESET_CFG), 747 pdata->reset_cfg); 748 ret |= adp5589_write(client, reg(ADP5589_PIN_CONFIG_D), 749 kpad->extend_cfg); 750 } 751 752 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_A), 753 pdata->debounce_dis_mask & kpad->var->row_mask); 754 755 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_B), 756 (pdata->debounce_dis_mask >> kpad->var->col_shift) 757 & kpad->var->col_mask); 758 759 if (!kpad->is_adp5585) 760 ret |= adp5589_write(client, reg(ADP5589_DEBOUNCE_DIS_C), 761 (pdata->debounce_dis_mask >> 16) & 0xFF); 762 763 ret |= adp5589_write(client, reg(ADP5589_POLL_PTIME_CFG), 764 pdata->scan_cycle_time & PTIME_MASK); 765 ret |= adp5589_write(client, ADP5589_5_INT_STATUS, 766 (kpad->is_adp5585 ? 0 : LOGIC2_INT) | 767 LOGIC1_INT | OVRFLOW_INT | 768 (kpad->is_adp5585 ? 0 : LOCK_INT) | 769 GPI_INT | EVENT_INT); /* Status is W1C */ 770 771 ret |= adp5589_write(client, reg(ADP5589_GENERAL_CFG), 772 INT_CFG | OSC_EN | CORE_CLK(3)); 773 ret |= adp5589_write(client, reg(ADP5589_INT_EN), 774 OVRFLOW_IEN | GPI_IEN | EVENT_IEN); 775 776 if (ret < 0) { 777 dev_err(&client->dev, "Write Error\n"); 778 return ret; 779 } 780 781 return 0; 782 } 783 784 static void adp5589_report_switch_state(struct adp5589_kpad *kpad) 785 { 786 int gpi_stat_tmp, pin_loc; 787 int i; 788 int gpi_stat1 = adp5589_read(kpad->client, 789 kpad->var->reg(ADP5589_GPI_STATUS_A)); 790 int gpi_stat2 = adp5589_read(kpad->client, 791 kpad->var->reg(ADP5589_GPI_STATUS_B)); 792 int gpi_stat3 = !kpad->is_adp5585 ? 793 adp5589_read(kpad->client, ADP5589_GPI_STATUS_C) : 0; 794 795 for (i = 0; i < kpad->gpimapsize; i++) { 796 unsigned short pin = kpad->gpimap[i].pin; 797 798 if (pin <= kpad->var->gpi_pin_row_end) { 799 gpi_stat_tmp = gpi_stat1; 800 pin_loc = pin - kpad->var->gpi_pin_row_base; 801 } else if ((pin - kpad->var->gpi_pin_col_base) < 8) { 802 gpi_stat_tmp = gpi_stat2; 803 pin_loc = pin - kpad->var->gpi_pin_col_base; 804 } else { 805 gpi_stat_tmp = gpi_stat3; 806 pin_loc = pin - kpad->var->gpi_pin_col_base - 8; 807 } 808 809 if (gpi_stat_tmp < 0) { 810 dev_err(&kpad->client->dev, 811 "Can't read GPIO_DAT_STAT switch %d, default to OFF\n", 812 pin); 813 gpi_stat_tmp = 0; 814 } 815 816 input_report_switch(kpad->input, 817 kpad->gpimap[i].sw_evt, 818 !(gpi_stat_tmp & BIT(pin_loc))); 819 } 820 821 input_sync(kpad->input); 822 } 823 824 static int adp5589_keypad_add(struct adp5589_kpad *kpad, unsigned int revid) 825 { 826 struct i2c_client *client = kpad->client; 827 const struct adp5589_kpad_platform_data *pdata = 828 dev_get_platdata(&client->dev); 829 struct input_dev *input; 830 unsigned int i; 831 int error; 832 833 if (!((pdata->keypad_en_mask & kpad->var->row_mask) && 834 (pdata->keypad_en_mask >> kpad->var->col_shift)) || 835 !pdata->keymap) { 836 dev_err(&client->dev, "no rows, cols or keymap from pdata\n"); 837 return -EINVAL; 838 } 839 840 if (pdata->keymapsize != kpad->var->keymapsize) { 841 dev_err(&client->dev, "invalid keymapsize\n"); 842 return -EINVAL; 843 } 844 845 if (!pdata->gpimap && pdata->gpimapsize) { 846 dev_err(&client->dev, "invalid gpimap from pdata\n"); 847 return -EINVAL; 848 } 849 850 if (pdata->gpimapsize > kpad->var->gpimapsize_max) { 851 dev_err(&client->dev, "invalid gpimapsize\n"); 852 return -EINVAL; 853 } 854 855 for (i = 0; i < pdata->gpimapsize; i++) { 856 unsigned short pin = pdata->gpimap[i].pin; 857 858 if (pin < kpad->var->gpi_pin_base || 859 pin > kpad->var->gpi_pin_end) { 860 dev_err(&client->dev, "invalid gpi pin data\n"); 861 return -EINVAL; 862 } 863 864 if (BIT(pin - kpad->var->gpi_pin_row_base) & 865 pdata->keypad_en_mask) { 866 dev_err(&client->dev, "invalid gpi row/col data\n"); 867 return -EINVAL; 868 } 869 } 870 871 if (!client->irq) { 872 dev_err(&client->dev, "no IRQ?\n"); 873 return -EINVAL; 874 } 875 876 input = devm_input_allocate_device(&client->dev); 877 if (!input) 878 return -ENOMEM; 879 880 kpad->input = input; 881 882 input->name = client->name; 883 input->phys = "adp5589-keys/input0"; 884 input->dev.parent = &client->dev; 885 886 input_set_drvdata(input, kpad); 887 888 input->id.bustype = BUS_I2C; 889 input->id.vendor = 0x0001; 890 input->id.product = 0x0001; 891 input->id.version = revid; 892 893 input->keycodesize = sizeof(kpad->keycode[0]); 894 input->keycodemax = pdata->keymapsize; 895 input->keycode = kpad->keycode; 896 897 memcpy(kpad->keycode, pdata->keymap, 898 pdata->keymapsize * input->keycodesize); 899 900 kpad->gpimap = pdata->gpimap; 901 kpad->gpimapsize = pdata->gpimapsize; 902 903 /* setup input device */ 904 __set_bit(EV_KEY, input->evbit); 905 906 if (pdata->repeat) 907 __set_bit(EV_REP, input->evbit); 908 909 for (i = 0; i < input->keycodemax; i++) 910 if (kpad->keycode[i] <= KEY_MAX) 911 __set_bit(kpad->keycode[i], input->keybit); 912 __clear_bit(KEY_RESERVED, input->keybit); 913 914 if (kpad->gpimapsize) 915 __set_bit(EV_SW, input->evbit); 916 for (i = 0; i < kpad->gpimapsize; i++) 917 __set_bit(kpad->gpimap[i].sw_evt, input->swbit); 918 919 error = input_register_device(input); 920 if (error) { 921 dev_err(&client->dev, "unable to register input device\n"); 922 return error; 923 } 924 925 error = devm_request_threaded_irq(&client->dev, client->irq, 926 NULL, adp5589_irq, 927 IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 928 client->dev.driver->name, kpad); 929 if (error) { 930 dev_err(&client->dev, "unable to request irq %d\n", client->irq); 931 return error; 932 } 933 934 return 0; 935 } 936 937 static void adp5589_clear_config(void *data) 938 { 939 struct i2c_client *client = data; 940 struct adp5589_kpad *kpad = i2c_get_clientdata(client); 941 942 adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0); 943 } 944 945 static int adp5589_probe(struct i2c_client *client, 946 const struct i2c_device_id *id) 947 { 948 struct adp5589_kpad *kpad; 949 const struct adp5589_kpad_platform_data *pdata = 950 dev_get_platdata(&client->dev); 951 unsigned int revid; 952 int error, ret; 953 954 if (!i2c_check_functionality(client->adapter, 955 I2C_FUNC_SMBUS_BYTE_DATA)) { 956 dev_err(&client->dev, "SMBUS Byte Data not Supported\n"); 957 return -EIO; 958 } 959 960 if (!pdata) { 961 dev_err(&client->dev, "no platform data?\n"); 962 return -EINVAL; 963 } 964 965 kpad = devm_kzalloc(&client->dev, sizeof(*kpad), GFP_KERNEL); 966 if (!kpad) 967 return -ENOMEM; 968 969 kpad->client = client; 970 971 switch (id->driver_data) { 972 case ADP5585_02: 973 kpad->support_row5 = true; 974 fallthrough; 975 case ADP5585_01: 976 kpad->is_adp5585 = true; 977 kpad->var = &const_adp5585; 978 break; 979 case ADP5589: 980 kpad->support_row5 = true; 981 kpad->var = &const_adp5589; 982 break; 983 } 984 985 error = devm_add_action_or_reset(&client->dev, adp5589_clear_config, 986 client); 987 if (error) 988 return error; 989 990 ret = adp5589_read(client, ADP5589_5_ID); 991 if (ret < 0) 992 return ret; 993 994 revid = (u8) ret & ADP5589_5_DEVICE_ID_MASK; 995 996 if (pdata->keymapsize) { 997 error = adp5589_keypad_add(kpad, revid); 998 if (error) 999 return error; 1000 } 1001 1002 error = adp5589_setup(kpad); 1003 if (error) 1004 return error; 1005 1006 if (kpad->gpimapsize) 1007 adp5589_report_switch_state(kpad); 1008 1009 error = adp5589_gpio_add(kpad); 1010 if (error) 1011 return error; 1012 1013 i2c_set_clientdata(client, kpad); 1014 1015 dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq); 1016 return 0; 1017 } 1018 1019 static int __maybe_unused adp5589_suspend(struct device *dev) 1020 { 1021 struct i2c_client *client = to_i2c_client(dev); 1022 struct adp5589_kpad *kpad = i2c_get_clientdata(client); 1023 1024 if (kpad->input) 1025 disable_irq(client->irq); 1026 1027 return 0; 1028 } 1029 1030 static int __maybe_unused adp5589_resume(struct device *dev) 1031 { 1032 struct i2c_client *client = to_i2c_client(dev); 1033 struct adp5589_kpad *kpad = i2c_get_clientdata(client); 1034 1035 if (kpad->input) 1036 enable_irq(client->irq); 1037 1038 return 0; 1039 } 1040 1041 static SIMPLE_DEV_PM_OPS(adp5589_dev_pm_ops, adp5589_suspend, adp5589_resume); 1042 1043 static const struct i2c_device_id adp5589_id[] = { 1044 {"adp5589-keys", ADP5589}, 1045 {"adp5585-keys", ADP5585_01}, 1046 {"adp5585-02-keys", ADP5585_02}, /* Adds ROW5 to ADP5585 */ 1047 {} 1048 }; 1049 1050 MODULE_DEVICE_TABLE(i2c, adp5589_id); 1051 1052 static struct i2c_driver adp5589_driver = { 1053 .driver = { 1054 .name = KBUILD_MODNAME, 1055 .pm = &adp5589_dev_pm_ops, 1056 }, 1057 .probe = adp5589_probe, 1058 .id_table = adp5589_id, 1059 }; 1060 1061 module_i2c_driver(adp5589_driver); 1062 1063 MODULE_LICENSE("GPL"); 1064 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>"); 1065 MODULE_DESCRIPTION("ADP5589/ADP5585 Keypad driver"); 1066