1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Input driver for Microchip CAP11xx based capacitive touch sensors 4 * 5 * (c) 2014 Daniel Mack <linux@zonque.org> 6 */ 7 8#include <linux/kernel.h> 9#include <linux/module.h> 10#include <linux/interrupt.h> 11#include <linux/input.h> 12#include <linux/leds.h> 13#include <linux/of.h> 14#include <linux/regmap.h> 15#include <linux/i2c.h> 16#include <linux/gpio/consumer.h> 17#include <linux/bitfield.h> 18 19#define CAP11XX_REG_MAIN_CONTROL 0x00 20#define CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT (6) 21#define CAP11XX_REG_MAIN_CONTROL_GAIN_MASK (0xc0) 22#define CAP11XX_REG_MAIN_CONTROL_DLSEEP BIT(4) 23#define CAP11XX_REG_GENERAL_STATUS 0x02 24#define CAP11XX_REG_SENSOR_INPUT 0x03 25#define CAP11XX_REG_NOISE_FLAG_STATUS 0x0a 26#define CAP11XX_REG_SENOR_DELTA(X) (0x10 + (X)) 27#define CAP11XX_REG_SENSITIVITY_CONTROL 0x1f 28#define CAP11XX_REG_SENSITIVITY_CONTROL_DELTA_SENSE_MASK 0x70 29#define CAP11XX_REG_CONFIG 0x20 30#define CAP11XX_REG_SENSOR_ENABLE 0x21 31#define CAP11XX_REG_SENSOR_CONFIG 0x22 32#define CAP11XX_REG_SENSOR_CONFIG2 0x23 33#define CAP11XX_REG_SAMPLING_CONFIG 0x24 34#define CAP11XX_REG_CALIBRATION 0x26 35#define CAP11XX_REG_INT_ENABLE 0x27 36#define CAP11XX_REG_REPEAT_RATE 0x28 37#define CAP11XX_REG_SIGNAL_GUARD_ENABLE 0x29 38#define CAP11XX_REG_MT_CONFIG 0x2a 39#define CAP11XX_REG_MT_PATTERN_CONFIG 0x2b 40#define CAP11XX_REG_MT_PATTERN 0x2d 41#define CAP11XX_REG_RECALIB_CONFIG 0x2f 42#define CAP11XX_REG_SENSOR_THRESH(X) (0x30 + (X)) 43#define CAP11XX_REG_SENSOR_NOISE_THRESH 0x38 44#define CAP11XX_REG_STANDBY_CHANNEL 0x40 45#define CAP11XX_REG_STANDBY_CONFIG 0x41 46#define CAP11XX_REG_STANDBY_SENSITIVITY 0x42 47#define CAP11XX_REG_STANDBY_THRESH 0x43 48#define CAP11XX_REG_CONFIG2 0x44 49#define CAP11XX_REG_CONFIG2_ALT_POL BIT(6) 50#define CAP11XX_REG_SENSOR_BASE_CNT(X) (0x50 + (X)) 51#define CAP11XX_REG_LED_POLARITY 0x73 52#define CAP11XX_REG_LED_OUTPUT_CONTROL 0x74 53#define CAP11XX_REG_CALIB_SENSITIVITY_CONFIG 0x80 54#define CAP11XX_REG_CALIB_SENSITIVITY_CONFIG2 0x81 55 56#define CAP11XX_REG_LED_DUTY_CYCLE_1 0x90 57#define CAP11XX_REG_LED_DUTY_CYCLE_2 0x91 58#define CAP11XX_REG_LED_DUTY_CYCLE_3 0x92 59#define CAP11XX_REG_LED_DUTY_CYCLE_4 0x93 60 61#define CAP11XX_REG_LED_DUTY_MIN_MASK (0x0f) 62#define CAP11XX_REG_LED_DUTY_MIN_MASK_SHIFT (0) 63#define CAP11XX_REG_LED_DUTY_MAX_MASK (0xf0) 64#define CAP11XX_REG_LED_DUTY_MAX_MASK_SHIFT (4) 65#define CAP11XX_REG_LED_DUTY_MAX_VALUE (15) 66 67#define CAP11XX_REG_SENSOR_CALIB (0xb1 + (X)) 68#define CAP11XX_REG_SENSOR_CALIB_LSB1 0xb9 69#define CAP11XX_REG_SENSOR_CALIB_LSB2 0xba 70#define CAP11XX_REG_PRODUCT_ID 0xfd 71#define CAP11XX_REG_MANUFACTURER_ID 0xfe 72#define CAP11XX_REG_REVISION 0xff 73 74#define CAP11XX_MANUFACTURER_ID 0x5d 75 76#ifdef CONFIG_LEDS_CLASS 77struct cap11xx_led { 78 struct cap11xx_priv *priv; 79 struct led_classdev cdev; 80 u32 reg; 81}; 82#endif 83 84struct cap11xx_priv { 85 struct regmap *regmap; 86 struct device *dev; 87 struct input_dev *idev; 88 const struct cap11xx_hw_model *model; 89 u8 id; 90 91 struct cap11xx_led *leds; 92 int num_leds; 93 94 /* config */ 95 u8 analog_gain; 96 u8 sensitivity_delta_sense; 97 u8 signal_guard_inputs_mask; 98 u32 thresholds[8]; 99 u32 calib_sensitivities[8]; 100 u32 keycodes[]; 101}; 102 103struct cap11xx_hw_model { 104 u8 product_id; 105 unsigned int num_channels; 106 unsigned int num_leds; 107 bool no_gain; 108}; 109 110enum { 111 CAP1106, 112 CAP1126, 113 CAP1188, 114 CAP1203, 115 CAP1206, 116 CAP1293, 117 CAP1298 118}; 119 120static const struct cap11xx_hw_model cap11xx_devices[] = { 121 [CAP1106] = { .product_id = 0x55, .num_channels = 6, .num_leds = 0, .no_gain = false }, 122 [CAP1126] = { .product_id = 0x53, .num_channels = 6, .num_leds = 2, .no_gain = false }, 123 [CAP1188] = { .product_id = 0x50, .num_channels = 8, .num_leds = 8, .no_gain = false }, 124 [CAP1203] = { .product_id = 0x6d, .num_channels = 3, .num_leds = 0, .no_gain = true }, 125 [CAP1206] = { .product_id = 0x67, .num_channels = 6, .num_leds = 0, .no_gain = true }, 126 [CAP1293] = { .product_id = 0x6f, .num_channels = 3, .num_leds = 0, .no_gain = false }, 127 [CAP1298] = { .product_id = 0x71, .num_channels = 8, .num_leds = 0, .no_gain = false }, 128}; 129 130static const struct reg_default cap11xx_reg_defaults[] = { 131 { CAP11XX_REG_MAIN_CONTROL, 0x00 }, 132 { CAP11XX_REG_GENERAL_STATUS, 0x00 }, 133 { CAP11XX_REG_SENSOR_INPUT, 0x00 }, 134 { CAP11XX_REG_NOISE_FLAG_STATUS, 0x00 }, 135 { CAP11XX_REG_SENSITIVITY_CONTROL, 0x2f }, 136 { CAP11XX_REG_CONFIG, 0x20 }, 137 { CAP11XX_REG_SENSOR_ENABLE, 0x3f }, 138 { CAP11XX_REG_SENSOR_CONFIG, 0xa4 }, 139 { CAP11XX_REG_SENSOR_CONFIG2, 0x07 }, 140 { CAP11XX_REG_SAMPLING_CONFIG, 0x39 }, 141 { CAP11XX_REG_CALIBRATION, 0x00 }, 142 { CAP11XX_REG_INT_ENABLE, 0x3f }, 143 { CAP11XX_REG_REPEAT_RATE, 0x3f }, 144 { CAP11XX_REG_MT_CONFIG, 0x80 }, 145 { CAP11XX_REG_MT_PATTERN_CONFIG, 0x00 }, 146 { CAP11XX_REG_MT_PATTERN, 0x3f }, 147 { CAP11XX_REG_RECALIB_CONFIG, 0x8a }, 148 { CAP11XX_REG_SENSOR_THRESH(0), 0x40 }, 149 { CAP11XX_REG_SENSOR_THRESH(1), 0x40 }, 150 { CAP11XX_REG_SENSOR_THRESH(2), 0x40 }, 151 { CAP11XX_REG_SENSOR_THRESH(3), 0x40 }, 152 { CAP11XX_REG_SENSOR_THRESH(4), 0x40 }, 153 { CAP11XX_REG_SENSOR_THRESH(5), 0x40 }, 154 { CAP11XX_REG_SENSOR_NOISE_THRESH, 0x01 }, 155 { CAP11XX_REG_STANDBY_CHANNEL, 0x00 }, 156 { CAP11XX_REG_STANDBY_CONFIG, 0x39 }, 157 { CAP11XX_REG_STANDBY_SENSITIVITY, 0x02 }, 158 { CAP11XX_REG_STANDBY_THRESH, 0x40 }, 159 { CAP11XX_REG_CONFIG2, 0x40 }, 160 { CAP11XX_REG_LED_POLARITY, 0x00 }, 161 { CAP11XX_REG_SENSOR_CALIB_LSB1, 0x00 }, 162 { CAP11XX_REG_SENSOR_CALIB_LSB2, 0x00 }, 163}; 164 165static bool cap11xx_volatile_reg(struct device *dev, unsigned int reg) 166{ 167 switch (reg) { 168 case CAP11XX_REG_MAIN_CONTROL: 169 case CAP11XX_REG_SENSOR_INPUT: 170 case CAP11XX_REG_SENOR_DELTA(0): 171 case CAP11XX_REG_SENOR_DELTA(1): 172 case CAP11XX_REG_SENOR_DELTA(2): 173 case CAP11XX_REG_SENOR_DELTA(3): 174 case CAP11XX_REG_SENOR_DELTA(4): 175 case CAP11XX_REG_SENOR_DELTA(5): 176 return true; 177 } 178 179 return false; 180} 181 182static const struct regmap_config cap11xx_regmap_config = { 183 .reg_bits = 8, 184 .val_bits = 8, 185 186 .max_register = CAP11XX_REG_REVISION, 187 .reg_defaults = cap11xx_reg_defaults, 188 189 .num_reg_defaults = ARRAY_SIZE(cap11xx_reg_defaults), 190 .cache_type = REGCACHE_MAPLE, 191 .volatile_reg = cap11xx_volatile_reg, 192}; 193 194static int cap11xx_write_calib_sens_config_1(struct cap11xx_priv *priv) 195{ 196 return regmap_write(priv->regmap, 197 CAP11XX_REG_CALIB_SENSITIVITY_CONFIG, 198 (priv->calib_sensitivities[3] << 6) | 199 (priv->calib_sensitivities[2] << 4) | 200 (priv->calib_sensitivities[1] << 2) | 201 priv->calib_sensitivities[0]); 202} 203 204static int cap11xx_write_calib_sens_config_2(struct cap11xx_priv *priv) 205{ 206 return regmap_write(priv->regmap, 207 CAP11XX_REG_CALIB_SENSITIVITY_CONFIG2, 208 (priv->calib_sensitivities[7] << 6) | 209 (priv->calib_sensitivities[6] << 4) | 210 (priv->calib_sensitivities[5] << 2) | 211 priv->calib_sensitivities[4]); 212} 213 214static int cap11xx_init_keys(struct cap11xx_priv *priv) 215{ 216 struct device_node *node = priv->dev->of_node; 217 struct device *dev = priv->dev; 218 int i, error; 219 u32 u32_val; 220 221 if (!node) { 222 dev_err(dev, "Corresponding DT entry is not available\n"); 223 return -ENODEV; 224 } 225 226 if (!of_property_read_u32(node, "microchip,sensor-gain", &u32_val)) { 227 if (priv->model->no_gain) { 228 dev_warn(dev, 229 "This model doesn't support 'sensor-gain'\n"); 230 } else if (is_power_of_2(u32_val) && u32_val <= 8) { 231 priv->analog_gain = (u8)ilog2(u32_val); 232 233 error = regmap_update_bits(priv->regmap, 234 CAP11XX_REG_MAIN_CONTROL, 235 CAP11XX_REG_MAIN_CONTROL_GAIN_MASK, 236 priv->analog_gain << CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT); 237 if (error) 238 return error; 239 } else { 240 dev_err(dev, "Invalid sensor-gain value %u\n", u32_val); 241 return -EINVAL; 242 } 243 } 244 245 if (of_property_read_bool(node, "microchip,irq-active-high")) { 246 if (priv->id == CAP1106 || 247 priv->id == CAP1126 || 248 priv->id == CAP1188) { 249 error = regmap_update_bits(priv->regmap, 250 CAP11XX_REG_CONFIG2, 251 CAP11XX_REG_CONFIG2_ALT_POL, 252 0); 253 if (error) 254 return error; 255 } else { 256 dev_warn(dev, 257 "This model doesn't support 'irq-active-high'\n"); 258 } 259 } 260 261 if (!of_property_read_u32(node, "microchip,sensitivity-delta-sense", &u32_val)) { 262 if (!is_power_of_2(u32_val) || u32_val > 128) { 263 dev_err(dev, "Invalid sensitivity-delta-sense value %u\n", u32_val); 264 return -EINVAL; 265 } 266 267 priv->sensitivity_delta_sense = (u8)ilog2(u32_val); 268 u32_val = ~(FIELD_PREP(CAP11XX_REG_SENSITIVITY_CONTROL_DELTA_SENSE_MASK, 269 priv->sensitivity_delta_sense)); 270 271 error = regmap_update_bits(priv->regmap, 272 CAP11XX_REG_SENSITIVITY_CONTROL, 273 CAP11XX_REG_SENSITIVITY_CONTROL_DELTA_SENSE_MASK, 274 u32_val); 275 if (error) 276 return error; 277 } 278 279 if (!of_property_read_u32_array(node, "microchip,input-threshold", 280 priv->thresholds, priv->model->num_channels)) { 281 for (i = 0; i < priv->model->num_channels; i++) { 282 if (priv->thresholds[i] > 127) { 283 dev_err(dev, "Invalid input-threshold value %u\n", 284 priv->thresholds[i]); 285 return -EINVAL; 286 } 287 288 error = regmap_write(priv->regmap, 289 CAP11XX_REG_SENSOR_THRESH(i), 290 priv->thresholds[i]); 291 if (error) 292 return error; 293 } 294 } 295 296 if (!of_property_read_u32_array(node, "microchip,calib-sensitivity", 297 priv->calib_sensitivities, 298 priv->model->num_channels)) { 299 if (priv->id == CAP1293 || priv->id == CAP1298) { 300 for (i = 0; i < priv->model->num_channels; i++) { 301 if (!is_power_of_2(priv->calib_sensitivities[i]) || 302 priv->calib_sensitivities[i] > 4) { 303 dev_err(dev, "Invalid calib-sensitivity value %u\n", 304 priv->calib_sensitivities[i]); 305 return -EINVAL; 306 } 307 priv->calib_sensitivities[i] = ilog2(priv->calib_sensitivities[i]); 308 } 309 310 error = cap11xx_write_calib_sens_config_1(priv); 311 if (error) 312 return error; 313 314 if (priv->id == CAP1298) { 315 error = cap11xx_write_calib_sens_config_2(priv); 316 if (error) 317 return error; 318 } 319 } else { 320 dev_warn(dev, 321 "This model doesn't support 'calib-sensitivity'\n"); 322 } 323 } 324 325 for (i = 0; i < priv->model->num_channels; i++) { 326 if (!of_property_read_u32_index(node, "microchip,signal-guard", 327 i, &u32_val)) { 328 if (u32_val > 1) 329 return -EINVAL; 330 if (u32_val) 331 priv->signal_guard_inputs_mask |= 0x01 << i; 332 } 333 } 334 335 if (priv->signal_guard_inputs_mask) { 336 if (priv->id == CAP1293 || priv->id == CAP1298) { 337 error = regmap_write(priv->regmap, 338 CAP11XX_REG_SIGNAL_GUARD_ENABLE, 339 priv->signal_guard_inputs_mask); 340 if (error) 341 return error; 342 } else { 343 dev_warn(dev, 344 "This model doesn't support 'signal-guard'\n"); 345 } 346 } 347 348 /* Provide some useful defaults */ 349 for (i = 0; i < priv->model->num_channels; i++) 350 priv->keycodes[i] = KEY_A + i; 351 352 of_property_read_u32_array(node, "linux,keycodes", 353 priv->keycodes, priv->model->num_channels); 354 355 /* Disable autorepeat. The Linux input system has its own handling. */ 356 error = regmap_write(priv->regmap, CAP11XX_REG_REPEAT_RATE, 0); 357 if (error) 358 return error; 359 360 return 0; 361} 362 363static irqreturn_t cap11xx_thread_func(int irq_num, void *data) 364{ 365 struct cap11xx_priv *priv = data; 366 unsigned int status; 367 int ret, i; 368 369 /* 370 * Deassert interrupt. This needs to be done before reading the status 371 * registers, which will not carry valid values otherwise. 372 */ 373 ret = regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, 1, 0); 374 if (ret < 0) 375 goto out; 376 377 ret = regmap_read(priv->regmap, CAP11XX_REG_SENSOR_INPUT, &status); 378 if (ret < 0) 379 goto out; 380 381 for (i = 0; i < priv->idev->keycodemax; i++) 382 input_report_key(priv->idev, priv->keycodes[i], 383 status & (1 << i)); 384 385 input_sync(priv->idev); 386 387out: 388 return IRQ_HANDLED; 389} 390 391static int cap11xx_set_sleep(struct cap11xx_priv *priv, bool sleep) 392{ 393 /* 394 * DLSEEP mode will turn off all LEDS, prevent this 395 */ 396 if (IS_ENABLED(CONFIG_LEDS_CLASS) && priv->num_leds) 397 return 0; 398 399 return regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, 400 CAP11XX_REG_MAIN_CONTROL_DLSEEP, 401 sleep ? CAP11XX_REG_MAIN_CONTROL_DLSEEP : 0); 402} 403 404static int cap11xx_input_open(struct input_dev *idev) 405{ 406 struct cap11xx_priv *priv = input_get_drvdata(idev); 407 408 return cap11xx_set_sleep(priv, false); 409} 410 411static void cap11xx_input_close(struct input_dev *idev) 412{ 413 struct cap11xx_priv *priv = input_get_drvdata(idev); 414 415 cap11xx_set_sleep(priv, true); 416} 417 418#ifdef CONFIG_LEDS_CLASS 419static int cap11xx_led_set(struct led_classdev *cdev, 420 enum led_brightness value) 421{ 422 struct cap11xx_led *led = container_of(cdev, struct cap11xx_led, cdev); 423 struct cap11xx_priv *priv = led->priv; 424 425 /* 426 * All LEDs share the same duty cycle as this is a HW 427 * limitation. Brightness levels per LED are either 428 * 0 (OFF) and 1 (ON). 429 */ 430 return regmap_update_bits(priv->regmap, 431 CAP11XX_REG_LED_OUTPUT_CONTROL, 432 BIT(led->reg), 433 value ? BIT(led->reg) : 0); 434} 435 436static int cap11xx_init_leds(struct device *dev, 437 struct cap11xx_priv *priv, int num_leds) 438{ 439 struct device_node *node = dev->of_node, *child; 440 struct cap11xx_led *led; 441 int cnt = of_get_child_count(node); 442 int error; 443 444 if (!num_leds || !cnt) 445 return 0; 446 447 if (cnt > num_leds) 448 return -EINVAL; 449 450 led = devm_kcalloc(dev, cnt, sizeof(struct cap11xx_led), GFP_KERNEL); 451 if (!led) 452 return -ENOMEM; 453 454 priv->leds = led; 455 456 error = regmap_update_bits(priv->regmap, 457 CAP11XX_REG_LED_OUTPUT_CONTROL, 0xff, 0); 458 if (error) 459 return error; 460 461 error = regmap_update_bits(priv->regmap, CAP11XX_REG_LED_DUTY_CYCLE_4, 462 CAP11XX_REG_LED_DUTY_MAX_MASK, 463 CAP11XX_REG_LED_DUTY_MAX_VALUE << 464 CAP11XX_REG_LED_DUTY_MAX_MASK_SHIFT); 465 if (error) 466 return error; 467 468 for_each_child_of_node(node, child) { 469 u32 reg; 470 471 led->cdev.name = 472 of_get_property(child, "label", NULL) ? : child->name; 473 led->cdev.default_trigger = 474 of_get_property(child, "linux,default-trigger", NULL); 475 led->cdev.flags = 0; 476 led->cdev.brightness_set_blocking = cap11xx_led_set; 477 led->cdev.max_brightness = 1; 478 led->cdev.brightness = LED_OFF; 479 480 error = of_property_read_u32(child, "reg", ®); 481 if (error != 0 || reg >= num_leds) { 482 of_node_put(child); 483 return -EINVAL; 484 } 485 486 led->reg = reg; 487 led->priv = priv; 488 489 error = devm_led_classdev_register(dev, &led->cdev); 490 if (error) { 491 of_node_put(child); 492 return error; 493 } 494 495 priv->num_leds++; 496 led++; 497 } 498 499 return 0; 500} 501#else 502static int cap11xx_init_leds(struct device *dev, 503 struct cap11xx_priv *priv, int num_leds) 504{ 505 return 0; 506} 507#endif 508 509static int cap11xx_i2c_probe(struct i2c_client *i2c_client) 510{ 511 const struct i2c_device_id *id = i2c_client_get_device_id(i2c_client); 512 struct device *dev = &i2c_client->dev; 513 struct cap11xx_priv *priv; 514 const struct cap11xx_hw_model *cap; 515 int i, error; 516 unsigned int val, rev; 517 518 if (id->driver_data >= ARRAY_SIZE(cap11xx_devices)) { 519 dev_err(dev, "Invalid device ID %lu\n", id->driver_data); 520 return -EINVAL; 521 } 522 523 cap = &cap11xx_devices[id->driver_data]; 524 if (!cap || !cap->num_channels) { 525 dev_err(dev, "Invalid device configuration\n"); 526 return -EINVAL; 527 } 528 529 priv = devm_kzalloc(dev, 530 struct_size(priv, keycodes, cap->num_channels), 531 GFP_KERNEL); 532 if (!priv) 533 return -ENOMEM; 534 535 priv->dev = dev; 536 537 priv->regmap = devm_regmap_init_i2c(i2c_client, &cap11xx_regmap_config); 538 if (IS_ERR(priv->regmap)) 539 return PTR_ERR(priv->regmap); 540 541 error = regmap_read(priv->regmap, CAP11XX_REG_PRODUCT_ID, &val); 542 if (error) 543 return error; 544 545 if (val != cap->product_id) { 546 dev_err(dev, "Product ID: Got 0x%02x, expected 0x%02x\n", 547 val, cap->product_id); 548 return -ENXIO; 549 } 550 551 error = regmap_read(priv->regmap, CAP11XX_REG_MANUFACTURER_ID, &val); 552 if (error) 553 return error; 554 555 if (val != CAP11XX_MANUFACTURER_ID) { 556 dev_err(dev, "Manufacturer ID: Got 0x%02x, expected 0x%02x\n", 557 val, CAP11XX_MANUFACTURER_ID); 558 return -ENXIO; 559 } 560 561 error = regmap_read(priv->regmap, CAP11XX_REG_REVISION, &rev); 562 if (error < 0) 563 return error; 564 565 dev_info(dev, "CAP11XX detected, model %s, revision 0x%02x\n", 566 id->name, rev); 567 568 priv->model = cap; 569 priv->id = id->driver_data; 570 571 dev_info(dev, "CAP11XX device detected, model %s, revision 0x%02x\n", 572 id->name, rev); 573 574 error = cap11xx_init_keys(priv); 575 if (error) 576 return error; 577 578 priv->idev = devm_input_allocate_device(dev); 579 if (!priv->idev) 580 return -ENOMEM; 581 582 priv->idev->name = "CAP11XX capacitive touch sensor"; 583 priv->idev->id.bustype = BUS_I2C; 584 priv->idev->evbit[0] = BIT_MASK(EV_KEY); 585 586 if (of_property_read_bool(dev->of_node, "autorepeat")) 587 __set_bit(EV_REP, priv->idev->evbit); 588 589 for (i = 0; i < cap->num_channels; i++) 590 __set_bit(priv->keycodes[i], priv->idev->keybit); 591 592 __clear_bit(KEY_RESERVED, priv->idev->keybit); 593 594 priv->idev->keycode = priv->keycodes; 595 priv->idev->keycodesize = sizeof(priv->keycodes[0]); 596 priv->idev->keycodemax = cap->num_channels; 597 598 priv->idev->id.vendor = CAP11XX_MANUFACTURER_ID; 599 priv->idev->id.product = cap->product_id; 600 priv->idev->id.version = rev; 601 602 priv->idev->open = cap11xx_input_open; 603 priv->idev->close = cap11xx_input_close; 604 605 error = cap11xx_init_leds(dev, priv, cap->num_leds); 606 if (error) 607 return error; 608 609 input_set_drvdata(priv->idev, priv); 610 611 /* 612 * Put the device in deep sleep mode for now. 613 * ->open() will bring it back once the it is actually needed. 614 */ 615 cap11xx_set_sleep(priv, true); 616 617 error = input_register_device(priv->idev); 618 if (error) 619 return error; 620 621 error = devm_request_threaded_irq(dev, i2c_client->irq, 622 NULL, cap11xx_thread_func, 623 IRQF_ONESHOT, dev_name(dev), priv); 624 if (error) 625 return error; 626 627 return 0; 628} 629 630static const struct of_device_id cap11xx_dt_ids[] = { 631 { .compatible = "microchip,cap1106", }, 632 { .compatible = "microchip,cap1126", }, 633 { .compatible = "microchip,cap1188", }, 634 { .compatible = "microchip,cap1203", }, 635 { .compatible = "microchip,cap1206", }, 636 { .compatible = "microchip,cap1293", }, 637 { .compatible = "microchip,cap1298", }, 638 {} 639}; 640MODULE_DEVICE_TABLE(of, cap11xx_dt_ids); 641 642static const struct i2c_device_id cap11xx_i2c_ids[] = { 643 { "cap1106", CAP1106 }, 644 { "cap1126", CAP1126 }, 645 { "cap1188", CAP1188 }, 646 { "cap1203", CAP1203 }, 647 { "cap1206", CAP1206 }, 648 { "cap1293", CAP1293 }, 649 { "cap1298", CAP1298 }, 650 {} 651}; 652MODULE_DEVICE_TABLE(i2c, cap11xx_i2c_ids); 653 654static struct i2c_driver cap11xx_i2c_driver = { 655 .driver = { 656 .name = "cap11xx", 657 .of_match_table = cap11xx_dt_ids, 658 }, 659 .id_table = cap11xx_i2c_ids, 660 .probe = cap11xx_i2c_probe, 661}; 662 663module_i2c_driver(cap11xx_i2c_driver); 664 665MODULE_DESCRIPTION("Microchip CAP11XX driver"); 666MODULE_AUTHOR("Daniel Mack <linux@zonque.org>"); 667MODULE_LICENSE("GPL v2"); 668