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/bits.h> 9 #include <linux/delay.h> 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/interrupt.h> 13 #include <linux/input.h> 14 #include <linux/leds.h> 15 #include <linux/of.h> 16 #include <linux/regmap.h> 17 #include <linux/i2c.h> 18 #include <linux/gpio/consumer.h> 19 #include <linux/bitfield.h> 20 21 #define CAP1114_REG_BUTTON_STATUS1 0x03 22 #define CAP1114_REG_BUTTON_STATUS2 0x04 23 #define CAP1114_REG_CONFIG2 0x40 24 #define CAP1114_REG_CONFIG2_VOL_UP_DOWN BIT(1) 25 #define CAP1114_REG_LED_OUTPUT_CONTROL1 0x73 26 27 #define CAP11XX_REG_MAIN_CONTROL 0x00 28 #define CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT (6) 29 #define CAP11XX_REG_MAIN_CONTROL_GAIN_MASK (0xc0) 30 #define CAP11XX_REG_MAIN_CONTROL_DLSEEP BIT(4) 31 #define CAP11XX_REG_SENSOR_INPUT 0x03 32 #define CAP1114_REG_BUTTON_STATUS2 0x04 33 #define CAP11XX_REG_SENOR_DELTA(X) (0x10 + (X)) 34 #define CAP11XX_REG_SENSITIVITY_CONTROL 0x1f 35 #define CAP11XX_REG_SENSITIVITY_CONTROL_DELTA_SENSE_MASK 0x70 36 #define CAP11XX_REG_REPEAT_RATE 0x28 37 #define CAP11XX_REG_SIGNAL_GUARD_ENABLE 0x29 38 #define CAP11XX_REG_SENSOR_THRESH(X) (0x30 + (X)) 39 #define CAP11XX_REG_CONFIG2 0x44 40 #define CAP11XX_REG_CONFIG2_ALT_POL BIT(6) 41 #define CAP11XX_REG_LED_OUTPUT_CONTROL 0x74 42 #define CAP11XX_REG_CALIB_SENSITIVITY_CONFIG 0x80 43 #define CAP11XX_REG_CALIB_SENSITIVITY_CONFIG2 0x81 44 #define CAP11XX_REG_LED_DUTY_CYCLE_4 0x93 45 46 #define CAP11XX_REG_LED_DUTY_MAX_MASK (0xf0) 47 #define CAP11XX_REG_LED_DUTY_MAX_VALUE (15) 48 49 #define CAP11XX_REG_PRODUCT_ID 0xfd 50 #define CAP11XX_REG_MANUFACTURER_ID 0xfe 51 #define CAP11XX_REG_REVISION 0xff 52 53 #define CAP11XX_MANUFACTURER_ID 0x5d 54 55 #define CAP11XX_T_RST_FILT_MIN_US 10000 56 #define CAP11XX_T_RST_ON_MIN_MS 400 57 58 #ifdef CONFIG_LEDS_CLASS 59 struct cap11xx_led { 60 struct cap11xx_priv *priv; 61 struct led_classdev cdev; 62 u32 reg; 63 }; 64 #endif 65 66 struct cap11xx_priv { 67 struct regmap *regmap; 68 struct device *dev; 69 struct input_dev *idev; 70 struct gpio_desc *reset_gpio; 71 const struct cap11xx_hw_model *model; 72 73 struct cap11xx_led *leds; 74 int num_leds; 75 76 /* config */ 77 u8 analog_gain; 78 u8 sensitivity_delta_sense; 79 u8 signal_guard_inputs_mask; 80 u32 thresholds[8]; 81 u32 calib_sensitivities[8]; 82 u32 keycodes[]; 83 }; 84 85 struct cap11xx_hw_model { 86 u8 product_id; 87 u8 led_output_control_reg_base; 88 u8 sensor_input_reg_base; 89 unsigned int num_channels; 90 unsigned int num_leds; 91 unsigned int num_sensor_thresholds; 92 bool has_gain; 93 bool has_grouped_sensors; 94 bool has_irq_config; 95 bool has_repeat_en; 96 bool has_sensitivity_control; 97 bool has_signal_guard; 98 }; 99 100 static const struct reg_default cap11xx_reg_defaults[] = { 101 { CAP11XX_REG_MAIN_CONTROL, 0x00 }, 102 { CAP11XX_REG_SENSITIVITY_CONTROL, 0x2f }, 103 { CAP11XX_REG_REPEAT_RATE, 0x3f }, 104 { CAP11XX_REG_SENSOR_THRESH(0), 0x40 }, 105 { CAP11XX_REG_SENSOR_THRESH(1), 0x40 }, 106 { CAP11XX_REG_SENSOR_THRESH(2), 0x40 }, 107 { CAP11XX_REG_SENSOR_THRESH(3), 0x40 }, 108 { CAP11XX_REG_SENSOR_THRESH(4), 0x40 }, 109 { CAP11XX_REG_SENSOR_THRESH(5), 0x40 }, 110 { CAP11XX_REG_SENSOR_THRESH(6), 0x40 }, 111 { CAP11XX_REG_SENSOR_THRESH(7), 0x40 }, 112 { CAP11XX_REG_CONFIG2, 0x40 }, 113 }; 114 115 static bool cap11xx_volatile_reg(struct device *dev, unsigned int reg) 116 { 117 switch (reg) { 118 case CAP11XX_REG_MAIN_CONTROL: 119 case CAP11XX_REG_SENSOR_INPUT: 120 /* 121 * CAP1114_REG_BUTTON_STATUS1 (CAP11XX_REG_SENSOR_INPUT) and 122 * CAP1114_REG_BUTTON_STATUS2 is volatile for the CAP1114, 123 * which supports more than 8 touch channels. 124 */ 125 case CAP1114_REG_BUTTON_STATUS2: 126 case CAP11XX_REG_SENOR_DELTA(0): 127 case CAP11XX_REG_SENOR_DELTA(1): 128 case CAP11XX_REG_SENOR_DELTA(2): 129 case CAP11XX_REG_SENOR_DELTA(3): 130 case CAP11XX_REG_SENOR_DELTA(4): 131 case CAP11XX_REG_SENOR_DELTA(5): 132 return true; 133 } 134 135 return false; 136 } 137 138 static const struct regmap_config cap11xx_regmap_config = { 139 .reg_bits = 8, 140 .val_bits = 8, 141 142 .max_register = CAP11XX_REG_REVISION, 143 .reg_defaults = cap11xx_reg_defaults, 144 145 .num_reg_defaults = ARRAY_SIZE(cap11xx_reg_defaults), 146 .cache_type = REGCACHE_MAPLE, 147 .volatile_reg = cap11xx_volatile_reg, 148 }; 149 150 static int cap11xx_write_calib_sens_config_1(struct cap11xx_priv *priv) 151 { 152 return regmap_write(priv->regmap, 153 CAP11XX_REG_CALIB_SENSITIVITY_CONFIG, 154 (priv->calib_sensitivities[3] << 6) | 155 (priv->calib_sensitivities[2] << 4) | 156 (priv->calib_sensitivities[1] << 2) | 157 priv->calib_sensitivities[0]); 158 } 159 160 static int cap11xx_write_calib_sens_config_2(struct cap11xx_priv *priv) 161 { 162 return regmap_write(priv->regmap, 163 CAP11XX_REG_CALIB_SENSITIVITY_CONFIG2, 164 (priv->calib_sensitivities[7] << 6) | 165 (priv->calib_sensitivities[6] << 4) | 166 (priv->calib_sensitivities[5] << 2) | 167 priv->calib_sensitivities[4]); 168 } 169 170 static int cap11xx_init_keys(struct cap11xx_priv *priv) 171 { 172 struct device_node *node = priv->dev->of_node; 173 struct device *dev = priv->dev; 174 int i, error; 175 u32 u32_val; 176 177 if (!node) { 178 dev_err(dev, "Corresponding DT entry is not available\n"); 179 return -ENODEV; 180 } 181 182 if (!of_property_read_u32(node, "microchip,sensor-gain", &u32_val)) { 183 if (!priv->model->has_gain) { 184 dev_warn(dev, 185 "This model doesn't support 'sensor-gain'\n"); 186 } else if (is_power_of_2(u32_val) && u32_val <= 8) { 187 priv->analog_gain = (u8)ilog2(u32_val); 188 189 error = regmap_update_bits(priv->regmap, 190 CAP11XX_REG_MAIN_CONTROL, 191 CAP11XX_REG_MAIN_CONTROL_GAIN_MASK, 192 priv->analog_gain << CAP11XX_REG_MAIN_CONTROL_GAIN_SHIFT); 193 if (error) 194 return error; 195 } else { 196 dev_err(dev, "Invalid sensor-gain value %u\n", u32_val); 197 return -EINVAL; 198 } 199 } 200 201 if (of_property_read_bool(node, "microchip,irq-active-high")) { 202 if (priv->model->has_irq_config) { 203 error = regmap_update_bits(priv->regmap, 204 CAP11XX_REG_CONFIG2, 205 CAP11XX_REG_CONFIG2_ALT_POL, 206 0); 207 if (error) 208 return error; 209 } else { 210 dev_warn(dev, 211 "This model doesn't support 'irq-active-high'\n"); 212 } 213 } 214 215 if (!of_property_read_u32(node, "microchip,sensitivity-delta-sense", &u32_val)) { 216 if (!is_power_of_2(u32_val) || u32_val > 128) { 217 dev_err(dev, "Invalid sensitivity-delta-sense value %u\n", u32_val); 218 return -EINVAL; 219 } 220 221 priv->sensitivity_delta_sense = (u8)ilog2(u32_val); 222 u32_val = ~(FIELD_PREP(CAP11XX_REG_SENSITIVITY_CONTROL_DELTA_SENSE_MASK, 223 priv->sensitivity_delta_sense)); 224 225 error = regmap_update_bits(priv->regmap, 226 CAP11XX_REG_SENSITIVITY_CONTROL, 227 CAP11XX_REG_SENSITIVITY_CONTROL_DELTA_SENSE_MASK, 228 u32_val); 229 if (error) 230 return error; 231 } 232 233 if (!of_property_read_u32_array(node, "microchip,input-threshold", 234 priv->thresholds, priv->model->num_sensor_thresholds)) { 235 for (i = 0; i < priv->model->num_sensor_thresholds; i++) { 236 if (priv->thresholds[i] > 127) { 237 dev_err(dev, "Invalid input-threshold value %u\n", 238 priv->thresholds[i]); 239 return -EINVAL; 240 } 241 242 error = regmap_write(priv->regmap, 243 CAP11XX_REG_SENSOR_THRESH(i), 244 priv->thresholds[i]); 245 if (error) 246 return error; 247 } 248 } 249 250 if (of_property_present(node, "microchip,calib-sensitivity")) { 251 if (!priv->model->has_sensitivity_control) { 252 dev_warn(dev, 253 "This model doesn't support 'calib-sensitivity'\n"); 254 } else if (!of_property_read_u32_array(node, "microchip,calib-sensitivity", 255 priv->calib_sensitivities, 256 priv->model->num_channels)) { 257 for (i = 0; i < priv->model->num_channels; i++) { 258 if (!is_power_of_2(priv->calib_sensitivities[i]) || 259 priv->calib_sensitivities[i] > 4) { 260 dev_err(dev, "Invalid calib-sensitivity value %u\n", 261 priv->calib_sensitivities[i]); 262 return -EINVAL; 263 } 264 priv->calib_sensitivities[i] = ilog2(priv->calib_sensitivities[i]); 265 } 266 267 error = cap11xx_write_calib_sens_config_1(priv); 268 if (error) 269 return error; 270 271 if (priv->model->num_channels > 4) { 272 error = cap11xx_write_calib_sens_config_2(priv); 273 if (error) 274 return error; 275 } 276 } 277 } 278 279 if (of_property_present(node, "microchip,signal-guard")) { 280 if (!priv->model->has_signal_guard) { 281 dev_warn(dev, 282 "This model doesn't support 'signal-guard'\n"); 283 } else { 284 for (i = 0; i < priv->model->num_channels; i++) { 285 if (!of_property_read_u32_index(node, "microchip,signal-guard", 286 i, &u32_val)) { 287 if (u32_val > 1) 288 return -EINVAL; 289 if (u32_val) 290 priv->signal_guard_inputs_mask |= 0x01 << i; 291 } 292 } 293 294 if (priv->signal_guard_inputs_mask) { 295 error = regmap_write(priv->regmap, 296 CAP11XX_REG_SIGNAL_GUARD_ENABLE, 297 priv->signal_guard_inputs_mask); 298 if (error) 299 return error; 300 } 301 } 302 } 303 304 /* Provide some useful defaults */ 305 for (i = 0; i < priv->model->num_channels; i++) 306 priv->keycodes[i] = KEY_A + i; 307 308 of_property_read_u32_array(node, "linux,keycodes", 309 priv->keycodes, priv->model->num_channels); 310 311 /* 312 * CAP1114 needs dedicated configuration to split 313 * grouped sensors into independent inputs. 314 */ 315 if (priv->model->has_grouped_sensors) { 316 error = regmap_set_bits(priv->regmap, CAP1114_REG_CONFIG2, 317 CAP1114_REG_CONFIG2_VOL_UP_DOWN); 318 if (error) 319 return error; 320 } 321 322 if (priv->model->has_repeat_en) { 323 /* Disable autorepeat. The Linux input system has its own handling. */ 324 error = regmap_write(priv->regmap, CAP11XX_REG_REPEAT_RATE, 0); 325 if (error) 326 return error; 327 } 328 329 return 0; 330 } 331 332 static irqreturn_t cap11xx_thread_func(int irq_num, void *data) 333 { 334 struct cap11xx_priv *priv = data; 335 unsigned int status; 336 int ret, i; 337 338 /* 339 * Deassert interrupt. This needs to be done before reading the status 340 * registers, which will not carry valid values otherwise. 341 */ 342 ret = regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, 1, 0); 343 if (ret < 0) 344 goto out; 345 346 ret = regmap_read(priv->regmap, priv->model->sensor_input_reg_base, &status); 347 if (ret < 0) 348 goto out; 349 350 if (priv->model->num_channels > 8) { 351 unsigned int status2; 352 353 ret = regmap_read(priv->regmap, priv->model->sensor_input_reg_base + 1, &status2); 354 if (ret < 0) 355 goto out; 356 357 /* 358 * CAP1114 STATUS1 register only contains data for the first 6 channels. 359 * the remaining channels is stored in STATUS2. 360 */ 361 status &= GENMASK(5, 0); 362 status |= FIELD_PREP(GENMASK(13, 6), status2); 363 } 364 365 for (i = 0; i < priv->idev->keycodemax; i++) 366 input_report_key(priv->idev, priv->keycodes[i], 367 status & (1 << i)); 368 369 input_sync(priv->idev); 370 371 out: 372 return IRQ_HANDLED; 373 } 374 375 static int cap11xx_set_sleep(struct cap11xx_priv *priv, bool sleep) 376 { 377 /* 378 * DLSEEP mode will turn off all LEDS, prevent this 379 */ 380 if (IS_ENABLED(CONFIG_LEDS_CLASS) && priv->num_leds) 381 return 0; 382 383 return regmap_update_bits(priv->regmap, CAP11XX_REG_MAIN_CONTROL, 384 CAP11XX_REG_MAIN_CONTROL_DLSEEP, 385 sleep ? CAP11XX_REG_MAIN_CONTROL_DLSEEP : 0); 386 } 387 388 static int cap11xx_input_open(struct input_dev *idev) 389 { 390 struct cap11xx_priv *priv = input_get_drvdata(idev); 391 392 return cap11xx_set_sleep(priv, false); 393 } 394 395 static void cap11xx_input_close(struct input_dev *idev) 396 { 397 struct cap11xx_priv *priv = input_get_drvdata(idev); 398 399 cap11xx_set_sleep(priv, true); 400 } 401 402 #ifdef CONFIG_LEDS_CLASS 403 static int cap11xx_led_set(struct led_classdev *cdev, 404 enum led_brightness value) 405 { 406 struct cap11xx_led *led = container_of(cdev, struct cap11xx_led, cdev); 407 struct cap11xx_priv *priv = led->priv; 408 409 /* 410 * All LEDs share the same duty cycle as this is a HW 411 * limitation. Brightness levels per LED are either 412 * 0 (OFF) and 1 (ON). 413 */ 414 if (led->reg >= 8) 415 return regmap_update_bits(priv->regmap, 416 priv->model->led_output_control_reg_base + 1, 417 BIT(led->reg - 8), 418 value ? BIT(led->reg - 8) : 0); 419 else 420 return regmap_update_bits(priv->regmap, 421 priv->model->led_output_control_reg_base, 422 BIT(led->reg), 423 value ? BIT(led->reg) : 0); 424 } 425 426 static int cap11xx_init_leds(struct device *dev, 427 struct cap11xx_priv *priv, int num_leds) 428 { 429 struct device_node *node = dev->of_node; 430 struct cap11xx_led *led; 431 int cnt = of_get_child_count(node); 432 int error; 433 u32 duty_val; 434 435 if (!num_leds || !cnt) 436 return 0; 437 438 if (cnt > num_leds) 439 return -EINVAL; 440 441 led = devm_kcalloc(dev, cnt, sizeof(struct cap11xx_led), GFP_KERNEL); 442 if (!led) 443 return -ENOMEM; 444 445 priv->leds = led; 446 447 /* Set all LEDs to off */ 448 error = regmap_update_bits(priv->regmap, 449 priv->model->led_output_control_reg_base, 450 GENMASK(min(num_leds, 8) - 1, 0), 0); 451 if (error) 452 return error; 453 454 if (num_leds > 8) { 455 error = regmap_update_bits(priv->regmap, 456 priv->model->led_output_control_reg_base + 1, 457 GENMASK(num_leds - 8 - 1, 0), 0); 458 if (error) 459 return error; 460 } 461 462 duty_val = FIELD_PREP(CAP11XX_REG_LED_DUTY_MAX_MASK, 463 CAP11XX_REG_LED_DUTY_MAX_VALUE); 464 465 error = regmap_update_bits(priv->regmap, CAP11XX_REG_LED_DUTY_CYCLE_4, 466 CAP11XX_REG_LED_DUTY_MAX_MASK, duty_val); 467 if (error) 468 return error; 469 470 for_each_child_of_node_scoped(node, child) { 471 u32 reg; 472 473 led->cdev.name = 474 of_get_property(child, "label", NULL) ? : child->name; 475 led->cdev.default_trigger = 476 of_get_property(child, "linux,default-trigger", NULL); 477 led->cdev.flags = 0; 478 led->cdev.brightness_set_blocking = cap11xx_led_set; 479 led->cdev.max_brightness = 1; 480 led->cdev.brightness = LED_OFF; 481 482 error = of_property_read_u32(child, "reg", ®); 483 if (error != 0 || reg >= num_leds) 484 return -EINVAL; 485 486 led->reg = reg; 487 led->priv = priv; 488 489 error = devm_led_classdev_register(dev, &led->cdev); 490 if (error) 491 return error; 492 493 priv->num_leds++; 494 led++; 495 } 496 497 return 0; 498 } 499 #else 500 static int cap11xx_init_leds(struct device *dev, 501 struct cap11xx_priv *priv, int num_leds) 502 { 503 return 0; 504 } 505 #endif 506 507 static int cap11xx_i2c_probe(struct i2c_client *i2c_client) 508 { 509 const struct i2c_device_id *id; 510 const struct cap11xx_hw_model *cap; 511 struct device *dev = &i2c_client->dev; 512 struct cap11xx_priv *priv; 513 int i, error; 514 unsigned int val, rev; 515 516 id = i2c_client_get_device_id(i2c_client); 517 cap = i2c_get_match_data(i2c_client); 518 if (!id || !cap || !cap->num_channels) { 519 dev_err(dev, "Invalid device configuration\n"); 520 return -EINVAL; 521 } 522 523 priv = devm_kzalloc(dev, 524 struct_size(priv, keycodes, cap->num_channels), 525 GFP_KERNEL); 526 if (!priv) 527 return -ENOMEM; 528 529 priv->dev = dev; 530 531 priv->regmap = devm_regmap_init_i2c(i2c_client, &cap11xx_regmap_config); 532 if (IS_ERR(priv->regmap)) 533 return PTR_ERR(priv->regmap); 534 535 priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); 536 if (IS_ERR(priv->reset_gpio)) 537 return dev_err_probe(dev, PTR_ERR(priv->reset_gpio), 538 "Failed to get 'reset' GPIO\n"); 539 540 if (priv->reset_gpio) { 541 usleep_range(CAP11XX_T_RST_FILT_MIN_US, CAP11XX_T_RST_FILT_MIN_US * 2); 542 gpiod_set_value_cansleep(priv->reset_gpio, 0); 543 msleep(CAP11XX_T_RST_ON_MIN_MS); 544 } 545 546 error = regmap_read(priv->regmap, CAP11XX_REG_PRODUCT_ID, &val); 547 if (error) 548 return dev_err_probe(dev, error, "Failed to read product ID\n"); 549 550 if (val != cap->product_id) { 551 dev_err(dev, "Product ID: Got 0x%02x, expected 0x%02x\n", 552 val, cap->product_id); 553 return -ENXIO; 554 } 555 556 error = regmap_read(priv->regmap, CAP11XX_REG_MANUFACTURER_ID, &val); 557 if (error) 558 return dev_err_probe(dev, error, "Failed to read manufacturer ID\n"); 559 560 if (val != CAP11XX_MANUFACTURER_ID) { 561 dev_err(dev, "Manufacturer ID: Got 0x%02x, expected 0x%02x\n", 562 val, CAP11XX_MANUFACTURER_ID); 563 return -ENXIO; 564 } 565 566 error = regmap_read(priv->regmap, CAP11XX_REG_REVISION, &rev); 567 if (error) 568 return dev_err_probe(dev, error, "Failed to read revision\n"); 569 570 priv->model = cap; 571 572 dev_info(dev, "CAP11XX device detected, model %s, revision 0x%02x\n", 573 id->name, rev); 574 575 error = cap11xx_init_keys(priv); 576 if (error) 577 return error; 578 579 priv->idev = devm_input_allocate_device(dev); 580 if (!priv->idev) 581 return -ENOMEM; 582 583 priv->idev->name = "CAP11XX capacitive touch sensor"; 584 priv->idev->id.bustype = BUS_I2C; 585 priv->idev->evbit[0] = BIT_MASK(EV_KEY); 586 587 if (of_property_read_bool(dev->of_node, "autorepeat")) 588 __set_bit(EV_REP, priv->idev->evbit); 589 590 for (i = 0; i < cap->num_channels; i++) 591 __set_bit(priv->keycodes[i], priv->idev->keybit); 592 593 __clear_bit(KEY_RESERVED, priv->idev->keybit); 594 595 priv->idev->keycode = priv->keycodes; 596 priv->idev->keycodesize = sizeof(priv->keycodes[0]); 597 priv->idev->keycodemax = cap->num_channels; 598 599 priv->idev->id.vendor = CAP11XX_MANUFACTURER_ID; 600 priv->idev->id.product = cap->product_id; 601 priv->idev->id.version = rev; 602 603 priv->idev->open = cap11xx_input_open; 604 priv->idev->close = cap11xx_input_close; 605 606 error = cap11xx_init_leds(dev, priv, cap->num_leds); 607 if (error) 608 return error; 609 610 input_set_drvdata(priv->idev, priv); 611 612 /* 613 * Put the device in deep sleep mode for now. 614 * ->open() will bring it back once the it is actually needed. 615 */ 616 cap11xx_set_sleep(priv, true); 617 618 error = input_register_device(priv->idev); 619 if (error) 620 return error; 621 622 error = devm_request_threaded_irq(dev, i2c_client->irq, 623 NULL, cap11xx_thread_func, 624 IRQF_ONESHOT, dev_name(dev), priv); 625 if (error) 626 return error; 627 628 return 0; 629 } 630 631 static const struct cap11xx_hw_model cap1106_model = { 632 .product_id = 0x55, 633 .num_channels = 6, .num_leds = 0, .num_sensor_thresholds = 6, 634 .sensor_input_reg_base = CAP11XX_REG_SENSOR_INPUT, 635 .has_gain = true, 636 .has_irq_config = true, 637 .has_repeat_en = true, 638 }; 639 640 static const struct cap11xx_hw_model cap1114_model = { 641 .product_id = 0x3a, 642 .num_channels = 14, .num_leds = 11, .num_sensor_thresholds = 8, 643 .led_output_control_reg_base = CAP1114_REG_LED_OUTPUT_CONTROL1, 644 .sensor_input_reg_base = CAP1114_REG_BUTTON_STATUS1, 645 .has_grouped_sensors = true, 646 }; 647 648 static const struct cap11xx_hw_model cap1126_model = { 649 .product_id = 0x53, 650 .num_channels = 6, .num_leds = 2, .num_sensor_thresholds = 6, 651 .led_output_control_reg_base = CAP11XX_REG_LED_OUTPUT_CONTROL, 652 .sensor_input_reg_base = CAP11XX_REG_SENSOR_INPUT, 653 .has_gain = true, 654 .has_irq_config = true, 655 .has_repeat_en = true, 656 }; 657 658 static const struct cap11xx_hw_model cap1188_model = { 659 .product_id = 0x50, 660 .num_channels = 8, .num_leds = 8, .num_sensor_thresholds = 8, 661 .led_output_control_reg_base = CAP11XX_REG_LED_OUTPUT_CONTROL, 662 .sensor_input_reg_base = CAP11XX_REG_SENSOR_INPUT, 663 .has_gain = true, 664 .has_irq_config = true, 665 .has_repeat_en = true, 666 }; 667 668 static const struct cap11xx_hw_model cap1203_model = { 669 .product_id = 0x6d, 670 .num_channels = 3, .num_leds = 0, .num_sensor_thresholds = 3, 671 .sensor_input_reg_base = CAP11XX_REG_SENSOR_INPUT, 672 .has_repeat_en = true, 673 }; 674 675 static const struct cap11xx_hw_model cap1206_model = { 676 .product_id = 0x67, 677 .num_channels = 6, .num_leds = 0, .num_sensor_thresholds = 6, 678 .sensor_input_reg_base = CAP11XX_REG_SENSOR_INPUT, 679 .has_repeat_en = true, 680 }; 681 682 static const struct cap11xx_hw_model cap1293_model = { 683 .product_id = 0x6f, 684 .num_channels = 3, .num_leds = 0, .num_sensor_thresholds = 3, 685 .sensor_input_reg_base = CAP11XX_REG_SENSOR_INPUT, 686 .has_gain = true, 687 .has_repeat_en = true, 688 .has_sensitivity_control = true, 689 .has_signal_guard = true, 690 }; 691 692 static const struct cap11xx_hw_model cap1298_model = { 693 .product_id = 0x71, 694 .num_channels = 8, .num_leds = 0, .num_sensor_thresholds = 8, 695 .sensor_input_reg_base = CAP11XX_REG_SENSOR_INPUT, 696 .has_gain = true, 697 .has_repeat_en = true, 698 .has_sensitivity_control = true, 699 .has_signal_guard = true, 700 }; 701 702 static const struct of_device_id cap11xx_dt_ids[] = { 703 { .compatible = "microchip,cap1106", .data = &cap1106_model }, 704 { .compatible = "microchip,cap1114", .data = &cap1114_model }, 705 { .compatible = "microchip,cap1126", .data = &cap1126_model }, 706 { .compatible = "microchip,cap1188", .data = &cap1188_model }, 707 { .compatible = "microchip,cap1203", .data = &cap1203_model }, 708 { .compatible = "microchip,cap1206", .data = &cap1206_model }, 709 { .compatible = "microchip,cap1293", .data = &cap1293_model }, 710 { .compatible = "microchip,cap1298", .data = &cap1298_model }, 711 { } 712 }; 713 MODULE_DEVICE_TABLE(of, cap11xx_dt_ids); 714 715 static const struct i2c_device_id cap11xx_i2c_ids[] = { 716 { .name = "cap1106", .driver_data = (kernel_ulong_t)&cap1106_model }, 717 { .name = "cap1114", .driver_data = (kernel_ulong_t)&cap1114_model }, 718 { .name = "cap1126", .driver_data = (kernel_ulong_t)&cap1126_model }, 719 { .name = "cap1188", .driver_data = (kernel_ulong_t)&cap1188_model }, 720 { .name = "cap1203", .driver_data = (kernel_ulong_t)&cap1203_model }, 721 { .name = "cap1206", .driver_data = (kernel_ulong_t)&cap1206_model }, 722 { .name = "cap1293", .driver_data = (kernel_ulong_t)&cap1293_model }, 723 { .name = "cap1298", .driver_data = (kernel_ulong_t)&cap1298_model }, 724 { } 725 }; 726 MODULE_DEVICE_TABLE(i2c, cap11xx_i2c_ids); 727 728 static struct i2c_driver cap11xx_i2c_driver = { 729 .driver = { 730 .name = "cap11xx", 731 .of_match_table = cap11xx_dt_ids, 732 }, 733 .id_table = cap11xx_i2c_ids, 734 .probe = cap11xx_i2c_probe, 735 }; 736 737 module_i2c_driver(cap11xx_i2c_driver); 738 739 MODULE_DESCRIPTION("Microchip CAP11XX driver"); 740 MODULE_AUTHOR("Daniel Mack <linux@zonque.org>"); 741 MODULE_LICENSE("GPL v2"); 742