1 /* 2 * extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC 3 * 4 * Copyright (C) 2012 Samsung Electrnoics 5 * Chanwoo Choi <cw00.choi@samsung.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 18 #include <linux/kernel.h> 19 #include <linux/module.h> 20 #include <linux/i2c.h> 21 #include <linux/slab.h> 22 #include <linux/input.h> 23 #include <linux/interrupt.h> 24 #include <linux/err.h> 25 #include <linux/platform_device.h> 26 #include <linux/mfd/max77693.h> 27 #include <linux/mfd/max77693-private.h> 28 #include <linux/extcon.h> 29 #include <linux/regmap.h> 30 #include <linux/irqdomain.h> 31 32 #define DEV_NAME "max77693-muic" 33 #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ 34 35 /* 36 * Default value of MAX77693 register to bring up MUIC device. 37 * If user don't set some initial value for MUIC device through platform data, 38 * extcon-max77693 driver use 'default_init_data' to bring up base operation 39 * of MAX77693 MUIC device. 40 */ 41 static struct max77693_reg_data default_init_data[] = { 42 { 43 /* STATUS2 - [3]ChgDetRun */ 44 .addr = MAX77693_MUIC_REG_STATUS2, 45 .data = STATUS2_CHGDETRUN_MASK, 46 }, { 47 /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ 48 .addr = MAX77693_MUIC_REG_INTMASK1, 49 .data = INTMASK1_ADC1K_MASK 50 | INTMASK1_ADC_MASK, 51 }, { 52 /* INTMASK2 - Unmask [0]ChgTypM */ 53 .addr = MAX77693_MUIC_REG_INTMASK2, 54 .data = INTMASK2_CHGTYP_MASK, 55 }, { 56 /* INTMASK3 - Mask all of interrupts */ 57 .addr = MAX77693_MUIC_REG_INTMASK3, 58 .data = 0x0, 59 }, { 60 /* CDETCTRL2 */ 61 .addr = MAX77693_MUIC_REG_CDETCTRL2, 62 .data = CDETCTRL2_VIDRMEN_MASK 63 | CDETCTRL2_DXOVPEN_MASK, 64 }, 65 }; 66 67 enum max77693_muic_adc_debounce_time { 68 ADC_DEBOUNCE_TIME_5MS = 0, 69 ADC_DEBOUNCE_TIME_10MS, 70 ADC_DEBOUNCE_TIME_25MS, 71 ADC_DEBOUNCE_TIME_38_62MS, 72 }; 73 74 struct max77693_muic_info { 75 struct device *dev; 76 struct max77693_dev *max77693; 77 struct extcon_dev *edev; 78 int prev_cable_type; 79 int prev_cable_type_gnd; 80 int prev_chg_type; 81 int prev_button_type; 82 u8 status[2]; 83 84 int irq; 85 struct work_struct irq_work; 86 struct mutex mutex; 87 88 /* 89 * Use delayed workqueue to detect cable state and then 90 * notify cable state to notifiee/platform through uevent. 91 * After completing the booting of platform, the extcon provider 92 * driver should notify cable state to upper layer. 93 */ 94 struct delayed_work wq_detcable; 95 96 /* Button of dock device */ 97 struct input_dev *dock; 98 99 /* 100 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB 101 * h/w path of COMP2/COMN1 on CONTROL1 register. 102 */ 103 int path_usb; 104 int path_uart; 105 }; 106 107 enum max77693_muic_cable_group { 108 MAX77693_CABLE_GROUP_ADC = 0, 109 MAX77693_CABLE_GROUP_ADC_GND, 110 MAX77693_CABLE_GROUP_CHG, 111 MAX77693_CABLE_GROUP_VBVOLT, 112 }; 113 114 enum max77693_muic_charger_type { 115 MAX77693_CHARGER_TYPE_NONE = 0, 116 MAX77693_CHARGER_TYPE_USB, 117 MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, 118 MAX77693_CHARGER_TYPE_DEDICATED_CHG, 119 MAX77693_CHARGER_TYPE_APPLE_500MA, 120 MAX77693_CHARGER_TYPE_APPLE_1A_2A, 121 MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, 122 }; 123 124 /** 125 * struct max77693_muic_irq 126 * @irq: the index of irq list of MUIC device. 127 * @name: the name of irq. 128 * @virq: the virtual irq to use irq domain 129 */ 130 struct max77693_muic_irq { 131 unsigned int irq; 132 const char *name; 133 unsigned int virq; 134 }; 135 136 static struct max77693_muic_irq muic_irqs[] = { 137 { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, 138 { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, 139 { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, 140 { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, 141 { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, 142 { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, 143 { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, 144 { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, 145 { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, 146 { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, 147 { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, 148 { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, 149 { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, 150 { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, 151 { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, 152 { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, 153 }; 154 155 /* Define supported accessory type */ 156 enum max77693_muic_acc_type { 157 MAX77693_MUIC_ADC_GROUND = 0x0, 158 MAX77693_MUIC_ADC_SEND_END_BUTTON, 159 MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, 160 MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, 161 MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, 162 MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, 163 MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, 164 MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, 165 MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, 166 MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, 167 MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, 168 MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, 169 MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, 170 MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, 171 MAX77693_MUIC_ADC_RESERVED_ACC_1, 172 MAX77693_MUIC_ADC_RESERVED_ACC_2, 173 MAX77693_MUIC_ADC_RESERVED_ACC_3, 174 MAX77693_MUIC_ADC_RESERVED_ACC_4, 175 MAX77693_MUIC_ADC_RESERVED_ACC_5, 176 MAX77693_MUIC_ADC_CEA936_AUDIO, 177 MAX77693_MUIC_ADC_PHONE_POWERED_DEV, 178 MAX77693_MUIC_ADC_TTY_CONVERTER, 179 MAX77693_MUIC_ADC_UART_CABLE, 180 MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, 181 MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, 182 MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, 183 MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, 184 MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, 185 MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, 186 MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, 187 MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, 188 MAX77693_MUIC_ADC_OPEN, 189 190 /* The below accessories have same ADC value so ADCLow and 191 ADC1K bit is used to separate specific accessory */ 192 /* ADC|VBVolot|ADCLow|ADC1K| */ 193 MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */ 194 MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */ 195 MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ 196 MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ 197 MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ 198 }; 199 200 /* 201 * MAX77693 MUIC device support below list of accessories(external connector) 202 */ 203 static const unsigned int max77693_extcon_cable[] = { 204 EXTCON_USB, 205 EXTCON_USB_HOST, 206 EXTCON_TA, 207 EXTCON_FAST_CHARGER, 208 EXTCON_SLOW_CHARGER, 209 EXTCON_CHARGE_DOWNSTREAM, 210 EXTCON_MHL, 211 EXTCON_JIG, 212 EXTCON_DOCK, 213 EXTCON_NONE, 214 }; 215 216 /* 217 * max77693_muic_set_debounce_time - Set the debounce time of ADC 218 * @info: the instance including private data of max77693 MUIC 219 * @time: the debounce time of ADC 220 */ 221 static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, 222 enum max77693_muic_adc_debounce_time time) 223 { 224 int ret; 225 226 switch (time) { 227 case ADC_DEBOUNCE_TIME_5MS: 228 case ADC_DEBOUNCE_TIME_10MS: 229 case ADC_DEBOUNCE_TIME_25MS: 230 case ADC_DEBOUNCE_TIME_38_62MS: 231 /* 232 * Don't touch BTLDset, JIGset when you want to change adc 233 * debounce time. If it writes other than 0 to BTLDset, JIGset 234 * muic device will be reset and loose current state. 235 */ 236 ret = regmap_write(info->max77693->regmap_muic, 237 MAX77693_MUIC_REG_CTRL3, 238 time << CONTROL3_ADCDBSET_SHIFT); 239 if (ret) { 240 dev_err(info->dev, "failed to set ADC debounce time\n"); 241 return ret; 242 } 243 break; 244 default: 245 dev_err(info->dev, "invalid ADC debounce time\n"); 246 return -EINVAL; 247 } 248 249 return 0; 250 }; 251 252 /* 253 * max77693_muic_set_path - Set hardware line according to attached cable 254 * @info: the instance including private data of max77693 MUIC 255 * @value: the path according to attached cable 256 * @attached: the state of cable (true:attached, false:detached) 257 * 258 * The max77693 MUIC device share outside H/W line among a varity of cables 259 * so, this function set internal path of H/W line according to the type of 260 * attached cable. 261 */ 262 static int max77693_muic_set_path(struct max77693_muic_info *info, 263 u8 val, bool attached) 264 { 265 int ret = 0; 266 unsigned int ctrl1, ctrl2 = 0; 267 268 if (attached) 269 ctrl1 = val; 270 else 271 ctrl1 = CONTROL1_SW_OPEN; 272 273 ret = regmap_update_bits(info->max77693->regmap_muic, 274 MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); 275 if (ret < 0) { 276 dev_err(info->dev, "failed to update MUIC register\n"); 277 return ret; 278 } 279 280 if (attached) 281 ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ 282 else 283 ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ 284 285 ret = regmap_update_bits(info->max77693->regmap_muic, 286 MAX77693_MUIC_REG_CTRL2, 287 CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2); 288 if (ret < 0) { 289 dev_err(info->dev, "failed to update MUIC register\n"); 290 return ret; 291 } 292 293 dev_info(info->dev, 294 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", 295 ctrl1, ctrl2, attached ? "attached" : "detached"); 296 297 return 0; 298 } 299 300 /* 301 * max77693_muic_get_cable_type - Return cable type and check cable state 302 * @info: the instance including private data of max77693 MUIC 303 * @group: the path according to attached cable 304 * @attached: store cable state and return 305 * 306 * This function check the cable state either attached or detached, 307 * and then divide precise type of cable according to cable group. 308 * - MAX77693_CABLE_GROUP_ADC 309 * - MAX77693_CABLE_GROUP_ADC_GND 310 * - MAX77693_CABLE_GROUP_CHG 311 * - MAX77693_CABLE_GROUP_VBVOLT 312 */ 313 static int max77693_muic_get_cable_type(struct max77693_muic_info *info, 314 enum max77693_muic_cable_group group, bool *attached) 315 { 316 int cable_type = 0; 317 int adc; 318 int adc1k; 319 int adclow; 320 int vbvolt; 321 int chg_type; 322 323 switch (group) { 324 case MAX77693_CABLE_GROUP_ADC: 325 /* 326 * Read ADC value to check cable type and decide cable state 327 * according to cable type 328 */ 329 adc = info->status[0] & STATUS1_ADC_MASK; 330 adc >>= STATUS1_ADC_SHIFT; 331 332 /* 333 * Check current cable state/cable type and store cable type 334 * (info->prev_cable_type) for handling cable when cable is 335 * detached. 336 */ 337 if (adc == MAX77693_MUIC_ADC_OPEN) { 338 *attached = false; 339 340 cable_type = info->prev_cable_type; 341 info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; 342 } else { 343 *attached = true; 344 345 cable_type = info->prev_cable_type = adc; 346 } 347 break; 348 case MAX77693_CABLE_GROUP_ADC_GND: 349 /* 350 * Read ADC value to check cable type and decide cable state 351 * according to cable type 352 */ 353 adc = info->status[0] & STATUS1_ADC_MASK; 354 adc >>= STATUS1_ADC_SHIFT; 355 356 /* 357 * Check current cable state/cable type and store cable type 358 * (info->prev_cable_type/_gnd) for handling cable when cable 359 * is detached. 360 */ 361 if (adc == MAX77693_MUIC_ADC_OPEN) { 362 *attached = false; 363 364 cable_type = info->prev_cable_type_gnd; 365 info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; 366 } else { 367 *attached = true; 368 369 adclow = info->status[0] & STATUS1_ADCLOW_MASK; 370 adclow >>= STATUS1_ADCLOW_SHIFT; 371 adc1k = info->status[0] & STATUS1_ADC1K_MASK; 372 adc1k >>= STATUS1_ADC1K_SHIFT; 373 374 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; 375 vbvolt >>= STATUS2_VBVOLT_SHIFT; 376 377 /** 378 * [0x1|VBVolt|ADCLow|ADC1K] 379 * [0x1| 0| 0| 0] USB_HOST 380 * [0x1| 1| 0| 0] USB_HSOT_VB 381 * [0x1| 0| 1| 0] Audio Video cable with load 382 * [0x1| 0| 1| 1] MHL without charging cable 383 * [0x1| 1| 1| 1] MHL with charging cable 384 */ 385 cable_type = ((0x1 << 8) 386 | (vbvolt << 2) 387 | (adclow << 1) 388 | adc1k); 389 390 info->prev_cable_type = adc; 391 info->prev_cable_type_gnd = cable_type; 392 } 393 394 break; 395 case MAX77693_CABLE_GROUP_CHG: 396 /* 397 * Read charger type to check cable type and decide cable state 398 * according to type of charger cable. 399 */ 400 chg_type = info->status[1] & STATUS2_CHGTYP_MASK; 401 chg_type >>= STATUS2_CHGTYP_SHIFT; 402 403 if (chg_type == MAX77693_CHARGER_TYPE_NONE) { 404 *attached = false; 405 406 cable_type = info->prev_chg_type; 407 info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; 408 } else { 409 *attached = true; 410 411 /* 412 * Check current cable state/cable type and store cable 413 * type(info->prev_chg_type) for handling cable when 414 * charger cable is detached. 415 */ 416 cable_type = info->prev_chg_type = chg_type; 417 } 418 419 break; 420 case MAX77693_CABLE_GROUP_VBVOLT: 421 /* 422 * Read ADC value to check cable type and decide cable state 423 * according to cable type 424 */ 425 adc = info->status[0] & STATUS1_ADC_MASK; 426 adc >>= STATUS1_ADC_SHIFT; 427 chg_type = info->status[1] & STATUS2_CHGTYP_MASK; 428 chg_type >>= STATUS2_CHGTYP_SHIFT; 429 430 if (adc == MAX77693_MUIC_ADC_OPEN 431 && chg_type == MAX77693_CHARGER_TYPE_NONE) 432 *attached = false; 433 else 434 *attached = true; 435 436 /* 437 * Read vbvolt field, if vbvolt is 1, 438 * this cable is used for charging. 439 */ 440 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; 441 vbvolt >>= STATUS2_VBVOLT_SHIFT; 442 443 cable_type = vbvolt; 444 break; 445 default: 446 dev_err(info->dev, "Unknown cable group (%d)\n", group); 447 cable_type = -EINVAL; 448 break; 449 } 450 451 return cable_type; 452 } 453 454 static int max77693_muic_dock_handler(struct max77693_muic_info *info, 455 int cable_type, bool attached) 456 { 457 int ret = 0; 458 int vbvolt; 459 bool cable_attached; 460 unsigned int dock_id; 461 462 dev_info(info->dev, 463 "external connector is %s (adc:0x%02x)\n", 464 attached ? "attached" : "detached", cable_type); 465 466 switch (cable_type) { 467 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 468 /* 469 * Check power cable whether attached or detached state. 470 * The Dock-Smart device need surely external power supply. 471 * If power cable(USB/TA) isn't connected to Dock device, 472 * user can't use Dock-Smart for desktop mode. 473 */ 474 vbvolt = max77693_muic_get_cable_type(info, 475 MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); 476 if (attached && !vbvolt) { 477 dev_warn(info->dev, 478 "Cannot detect external power supply\n"); 479 return 0; 480 } 481 482 /* 483 * Notify Dock/MHL state. 484 * - Dock device include three type of cable which 485 * are HDMI, USB for mouse/keyboard and micro-usb port 486 * for USB/TA cable. Dock device need always exteranl 487 * power supply(USB/TA cable through micro-usb cable). Dock 488 * device support screen output of target to separate 489 * monitor and mouse/keyboard for desktop mode. 490 * 491 * Features of 'USB/TA cable with Dock device' 492 * - Support MHL 493 * - Support external output feature of audio 494 * - Support charging through micro-usb port without data 495 * connection if TA cable is connected to target. 496 * - Support charging and data connection through micro-usb port 497 * if USB cable is connected between target and host 498 * device. 499 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) 500 */ 501 ret = max77693_muic_set_path(info, info->path_usb, attached); 502 if (ret < 0) 503 return ret; 504 505 extcon_set_cable_state_(info->edev, EXTCON_DOCK, attached); 506 extcon_set_cable_state_(info->edev, EXTCON_MHL, attached); 507 goto out; 508 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ 509 dock_id = EXTCON_DOCK; 510 break; 511 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 512 dock_id = EXTCON_DOCK; 513 if (!attached) 514 extcon_set_cable_state_(info->edev, EXTCON_USB, false); 515 break; 516 default: 517 dev_err(info->dev, "failed to detect %s dock device\n", 518 attached ? "attached" : "detached"); 519 return -EINVAL; 520 } 521 522 /* Dock-Car/Desk/Audio, PATH:AUDIO */ 523 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); 524 if (ret < 0) 525 return ret; 526 extcon_set_cable_state_(info->edev, dock_id, attached); 527 528 out: 529 return 0; 530 } 531 532 static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, 533 int button_type, bool attached) 534 { 535 struct input_dev *dock = info->dock; 536 unsigned int code; 537 538 switch (button_type) { 539 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 540 ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: 541 /* DOCK_KEY_PREV */ 542 code = KEY_PREVIOUSSONG; 543 break; 544 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 545 ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: 546 /* DOCK_KEY_NEXT */ 547 code = KEY_NEXTSONG; 548 break; 549 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: 550 /* DOCK_VOL_DOWN */ 551 code = KEY_VOLUMEDOWN; 552 break; 553 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: 554 /* DOCK_VOL_UP */ 555 code = KEY_VOLUMEUP; 556 break; 557 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 558 ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: 559 /* DOCK_KEY_PLAY_PAUSE */ 560 code = KEY_PLAYPAUSE; 561 break; 562 default: 563 dev_err(info->dev, 564 "failed to detect %s key (adc:0x%x)\n", 565 attached ? "pressed" : "released", button_type); 566 return -EINVAL; 567 } 568 569 input_event(dock, EV_KEY, code, attached); 570 input_sync(dock); 571 572 return 0; 573 } 574 575 static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) 576 { 577 int cable_type_gnd; 578 int ret = 0; 579 bool attached; 580 581 cable_type_gnd = max77693_muic_get_cable_type(info, 582 MAX77693_CABLE_GROUP_ADC_GND, &attached); 583 584 switch (cable_type_gnd) { 585 case MAX77693_MUIC_GND_USB_HOST: 586 case MAX77693_MUIC_GND_USB_HOST_VB: 587 /* USB_HOST, PATH: AP_USB */ 588 ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); 589 if (ret < 0) 590 return ret; 591 extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, attached); 592 break; 593 case MAX77693_MUIC_GND_AV_CABLE_LOAD: 594 /* Audio Video Cable with load, PATH:AUDIO */ 595 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); 596 if (ret < 0) 597 return ret; 598 extcon_set_cable_state_(info->edev, EXTCON_USB, attached); 599 break; 600 case MAX77693_MUIC_GND_MHL: 601 case MAX77693_MUIC_GND_MHL_VB: 602 /* MHL or MHL with USB/TA cable */ 603 extcon_set_cable_state_(info->edev, EXTCON_MHL, attached); 604 break; 605 default: 606 dev_err(info->dev, "failed to detect %s cable of gnd type\n", 607 attached ? "attached" : "detached"); 608 return -EINVAL; 609 } 610 611 return 0; 612 } 613 614 static int max77693_muic_jig_handler(struct max77693_muic_info *info, 615 int cable_type, bool attached) 616 { 617 int ret = 0; 618 u8 path = CONTROL1_SW_OPEN; 619 620 dev_info(info->dev, 621 "external connector is %s (adc:0x%02x)\n", 622 attached ? "attached" : "detached", cable_type); 623 624 switch (cable_type) { 625 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ 626 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ 627 /* PATH:AP_USB */ 628 path = CONTROL1_SW_USB; 629 break; 630 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ 631 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */ 632 /* PATH:AP_UART */ 633 path = CONTROL1_SW_UART; 634 break; 635 default: 636 dev_err(info->dev, "failed to detect %s jig cable\n", 637 attached ? "attached" : "detached"); 638 return -EINVAL; 639 } 640 641 ret = max77693_muic_set_path(info, path, attached); 642 if (ret < 0) 643 return ret; 644 645 extcon_set_cable_state_(info->edev, EXTCON_JIG, attached); 646 647 return 0; 648 } 649 650 static int max77693_muic_adc_handler(struct max77693_muic_info *info) 651 { 652 int cable_type; 653 int button_type; 654 bool attached; 655 int ret = 0; 656 657 /* Check accessory state which is either detached or attached */ 658 cable_type = max77693_muic_get_cable_type(info, 659 MAX77693_CABLE_GROUP_ADC, &attached); 660 661 dev_info(info->dev, 662 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", 663 attached ? "attached" : "detached", cable_type, 664 info->prev_cable_type); 665 666 switch (cable_type) { 667 case MAX77693_MUIC_ADC_GROUND: 668 /* USB_HOST/MHL/Audio */ 669 max77693_muic_adc_ground_handler(info); 670 break; 671 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: 672 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: 673 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: 674 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: 675 /* JIG */ 676 ret = max77693_muic_jig_handler(info, cable_type, attached); 677 if (ret < 0) 678 return ret; 679 break; 680 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 681 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ 682 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 683 /* 684 * DOCK device 685 * 686 * The MAX77693 MUIC device can detect total 34 cable type 687 * except of charger cable and MUIC device didn't define 688 * specfic role of cable in the range of from 0x01 to 0x12 689 * of ADC value. So, can use/define cable with no role according 690 * to schema of hardware board. 691 */ 692 ret = max77693_muic_dock_handler(info, cable_type, attached); 693 if (ret < 0) 694 return ret; 695 break; 696 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ 697 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ 698 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ 699 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ 700 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ 701 /* 702 * Button of DOCK device 703 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button 704 * 705 * The MAX77693 MUIC device can detect total 34 cable type 706 * except of charger cable and MUIC device didn't define 707 * specfic role of cable in the range of from 0x01 to 0x12 708 * of ADC value. So, can use/define cable with no role according 709 * to schema of hardware board. 710 */ 711 if (attached) 712 button_type = info->prev_button_type = cable_type; 713 else 714 button_type = info->prev_button_type; 715 716 ret = max77693_muic_dock_button_handler(info, button_type, 717 attached); 718 if (ret < 0) 719 return ret; 720 break; 721 case MAX77693_MUIC_ADC_SEND_END_BUTTON: 722 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: 723 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: 724 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: 725 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: 726 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: 727 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: 728 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: 729 case MAX77693_MUIC_ADC_RESERVED_ACC_1: 730 case MAX77693_MUIC_ADC_RESERVED_ACC_2: 731 case MAX77693_MUIC_ADC_RESERVED_ACC_4: 732 case MAX77693_MUIC_ADC_RESERVED_ACC_5: 733 case MAX77693_MUIC_ADC_CEA936_AUDIO: 734 case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: 735 case MAX77693_MUIC_ADC_TTY_CONVERTER: 736 case MAX77693_MUIC_ADC_UART_CABLE: 737 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: 738 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: 739 /* 740 * This accessory isn't used in general case if it is specially 741 * needed to detect additional accessory, should implement 742 * proper operation when this accessory is attached/detached. 743 */ 744 dev_info(info->dev, 745 "accessory is %s but it isn't used (adc:0x%x)\n", 746 attached ? "attached" : "detached", cable_type); 747 return -EAGAIN; 748 default: 749 dev_err(info->dev, 750 "failed to detect %s accessory (adc:0x%x)\n", 751 attached ? "attached" : "detached", cable_type); 752 return -EINVAL; 753 } 754 755 return 0; 756 } 757 758 static int max77693_muic_chg_handler(struct max77693_muic_info *info) 759 { 760 int chg_type; 761 int cable_type_gnd; 762 int cable_type; 763 bool attached; 764 bool cable_attached; 765 int ret = 0; 766 767 chg_type = max77693_muic_get_cable_type(info, 768 MAX77693_CABLE_GROUP_CHG, &attached); 769 770 dev_info(info->dev, 771 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", 772 attached ? "attached" : "detached", 773 chg_type, info->prev_chg_type); 774 775 switch (chg_type) { 776 case MAX77693_CHARGER_TYPE_USB: 777 case MAX77693_CHARGER_TYPE_DEDICATED_CHG: 778 case MAX77693_CHARGER_TYPE_NONE: 779 /* Check MAX77693_CABLE_GROUP_ADC_GND type */ 780 cable_type_gnd = max77693_muic_get_cable_type(info, 781 MAX77693_CABLE_GROUP_ADC_GND, 782 &cable_attached); 783 switch (cable_type_gnd) { 784 case MAX77693_MUIC_GND_MHL: 785 case MAX77693_MUIC_GND_MHL_VB: 786 /* 787 * MHL cable with USB/TA cable 788 * - MHL cable include two port(HDMI line and separate 789 * micro-usb port. When the target connect MHL cable, 790 * extcon driver check whether USB/TA cable is 791 * connected. If USB/TA cable is connected, extcon 792 * driver notify state to notifiee for charging battery. 793 * 794 * Features of 'USB/TA with MHL cable' 795 * - Support MHL 796 * - Support charging through micro-usb port without 797 * data connection 798 */ 799 extcon_set_cable_state_(info->edev, EXTCON_TA, attached); 800 if (!cable_attached) 801 extcon_set_cable_state_(info->edev, EXTCON_MHL, 802 cable_attached); 803 break; 804 } 805 806 /* Check MAX77693_CABLE_GROUP_ADC type */ 807 cable_type = max77693_muic_get_cable_type(info, 808 MAX77693_CABLE_GROUP_ADC, 809 &cable_attached); 810 switch (cable_type) { 811 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 812 /* 813 * Dock-Audio device with USB/TA cable 814 * - Dock device include two port(Dock-Audio and micro- 815 * usb port). When the target connect Dock-Audio device, 816 * extcon driver check whether USB/TA cable is connected 817 * or not. If USB/TA cable is connected, extcon driver 818 * notify state to notifiee for charging battery. 819 * 820 * Features of 'USB/TA cable with Dock-Audio device' 821 * - Support external output feature of audio. 822 * - Support charging through micro-usb port without 823 * data connection. 824 */ 825 extcon_set_cable_state_(info->edev, EXTCON_USB, 826 attached); 827 828 if (!cable_attached) 829 extcon_set_cable_state_(info->edev, EXTCON_DOCK, 830 cable_attached); 831 break; 832 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 833 /* 834 * Dock-Smart device with USB/TA cable 835 * - Dock-Desk device include three type of cable which 836 * are HDMI, USB for mouse/keyboard and micro-usb port 837 * for USB/TA cable. Dock-Smart device need always 838 * exteranl power supply(USB/TA cable through micro-usb 839 * cable). Dock-Smart device support screen output of 840 * target to separate monitor and mouse/keyboard for 841 * desktop mode. 842 * 843 * Features of 'USB/TA cable with Dock-Smart device' 844 * - Support MHL 845 * - Support external output feature of audio 846 * - Support charging through micro-usb port without 847 * data connection if TA cable is connected to target. 848 * - Support charging and data connection through micro- 849 * usb port if USB cable is connected between target 850 * and host device 851 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) 852 */ 853 ret = max77693_muic_set_path(info, info->path_usb, 854 attached); 855 if (ret < 0) 856 return ret; 857 858 extcon_set_cable_state_(info->edev, EXTCON_DOCK, 859 attached); 860 extcon_set_cable_state_(info->edev, EXTCON_MHL, 861 attached); 862 break; 863 } 864 865 /* Check MAX77693_CABLE_GROUP_CHG type */ 866 switch (chg_type) { 867 case MAX77693_CHARGER_TYPE_NONE: 868 /* 869 * When MHL(with USB/TA cable) or Dock-Audio with USB/TA 870 * cable is attached, muic device happen below two irq. 871 * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting 872 * MHL/Dock-Audio. 873 * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting 874 * USB/TA cable connected to MHL or Dock-Audio. 875 * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC 876 * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. 877 * 878 * If user attach MHL (with USB/TA cable and immediately 879 * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ 880 * _INT2_CHGTYP irq is happened, USB/TA cable remain 881 * connected state to target. But USB/TA cable isn't 882 * connected to target. The user be face with unusual 883 * action. So, driver should check this situation in 884 * spite of, that previous charger type is N/A. 885 */ 886 break; 887 case MAX77693_CHARGER_TYPE_USB: 888 /* Only USB cable, PATH:AP_USB */ 889 ret = max77693_muic_set_path(info, info->path_usb, 890 attached); 891 if (ret < 0) 892 return ret; 893 894 extcon_set_cable_state_(info->edev, EXTCON_USB, 895 attached); 896 break; 897 case MAX77693_CHARGER_TYPE_DEDICATED_CHG: 898 /* Only TA cable */ 899 extcon_set_cable_state_(info->edev, EXTCON_TA, attached); 900 break; 901 } 902 break; 903 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: 904 extcon_set_cable_state_(info->edev, EXTCON_CHARGE_DOWNSTREAM, 905 attached); 906 break; 907 case MAX77693_CHARGER_TYPE_APPLE_500MA: 908 extcon_set_cable_state_(info->edev, EXTCON_SLOW_CHARGER, 909 attached); 910 break; 911 case MAX77693_CHARGER_TYPE_APPLE_1A_2A: 912 extcon_set_cable_state_(info->edev, EXTCON_FAST_CHARGER, 913 attached); 914 break; 915 case MAX77693_CHARGER_TYPE_DEAD_BATTERY: 916 break; 917 default: 918 dev_err(info->dev, 919 "failed to detect %s accessory (chg_type:0x%x)\n", 920 attached ? "attached" : "detached", chg_type); 921 return -EINVAL; 922 } 923 924 return 0; 925 } 926 927 static void max77693_muic_irq_work(struct work_struct *work) 928 { 929 struct max77693_muic_info *info = container_of(work, 930 struct max77693_muic_info, irq_work); 931 int irq_type = -1; 932 int i, ret = 0; 933 934 if (!info->edev) 935 return; 936 937 mutex_lock(&info->mutex); 938 939 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) 940 if (info->irq == muic_irqs[i].virq) 941 irq_type = muic_irqs[i].irq; 942 943 ret = regmap_bulk_read(info->max77693->regmap_muic, 944 MAX77693_MUIC_REG_STATUS1, info->status, 2); 945 if (ret) { 946 dev_err(info->dev, "failed to read MUIC register\n"); 947 mutex_unlock(&info->mutex); 948 return; 949 } 950 951 switch (irq_type) { 952 case MAX77693_MUIC_IRQ_INT1_ADC: 953 case MAX77693_MUIC_IRQ_INT1_ADC_LOW: 954 case MAX77693_MUIC_IRQ_INT1_ADC_ERR: 955 case MAX77693_MUIC_IRQ_INT1_ADC1K: 956 /* Handle all of accessory except for 957 type of charger accessory */ 958 ret = max77693_muic_adc_handler(info); 959 break; 960 case MAX77693_MUIC_IRQ_INT2_CHGTYP: 961 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: 962 case MAX77693_MUIC_IRQ_INT2_DCDTMR: 963 case MAX77693_MUIC_IRQ_INT2_DXOVP: 964 case MAX77693_MUIC_IRQ_INT2_VBVOLT: 965 case MAX77693_MUIC_IRQ_INT2_VIDRM: 966 /* Handle charger accessory */ 967 ret = max77693_muic_chg_handler(info); 968 break; 969 case MAX77693_MUIC_IRQ_INT3_EOC: 970 case MAX77693_MUIC_IRQ_INT3_CGMBC: 971 case MAX77693_MUIC_IRQ_INT3_OVP: 972 case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: 973 case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: 974 case MAX77693_MUIC_IRQ_INT3_BAT_DET: 975 break; 976 default: 977 dev_err(info->dev, "muic interrupt: irq %d occurred\n", 978 irq_type); 979 mutex_unlock(&info->mutex); 980 return; 981 } 982 983 if (ret < 0) 984 dev_err(info->dev, "failed to handle MUIC interrupt\n"); 985 986 mutex_unlock(&info->mutex); 987 } 988 989 static irqreturn_t max77693_muic_irq_handler(int irq, void *data) 990 { 991 struct max77693_muic_info *info = data; 992 993 info->irq = irq; 994 schedule_work(&info->irq_work); 995 996 return IRQ_HANDLED; 997 } 998 999 static const struct regmap_config max77693_muic_regmap_config = { 1000 .reg_bits = 8, 1001 .val_bits = 8, 1002 }; 1003 1004 static int max77693_muic_detect_accessory(struct max77693_muic_info *info) 1005 { 1006 int ret = 0; 1007 int adc; 1008 int chg_type; 1009 bool attached; 1010 1011 mutex_lock(&info->mutex); 1012 1013 /* Read STATUSx register to detect accessory */ 1014 ret = regmap_bulk_read(info->max77693->regmap_muic, 1015 MAX77693_MUIC_REG_STATUS1, info->status, 2); 1016 if (ret) { 1017 dev_err(info->dev, "failed to read MUIC register\n"); 1018 mutex_unlock(&info->mutex); 1019 return ret; 1020 } 1021 1022 adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, 1023 &attached); 1024 if (attached && adc != MAX77693_MUIC_ADC_OPEN) { 1025 ret = max77693_muic_adc_handler(info); 1026 if (ret < 0) { 1027 dev_err(info->dev, "Cannot detect accessory\n"); 1028 mutex_unlock(&info->mutex); 1029 return ret; 1030 } 1031 } 1032 1033 chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, 1034 &attached); 1035 if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { 1036 ret = max77693_muic_chg_handler(info); 1037 if (ret < 0) { 1038 dev_err(info->dev, "Cannot detect charger accessory\n"); 1039 mutex_unlock(&info->mutex); 1040 return ret; 1041 } 1042 } 1043 1044 mutex_unlock(&info->mutex); 1045 1046 return 0; 1047 } 1048 1049 static void max77693_muic_detect_cable_wq(struct work_struct *work) 1050 { 1051 struct max77693_muic_info *info = container_of(to_delayed_work(work), 1052 struct max77693_muic_info, wq_detcable); 1053 1054 max77693_muic_detect_accessory(info); 1055 } 1056 1057 static int max77693_muic_probe(struct platform_device *pdev) 1058 { 1059 struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); 1060 struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); 1061 struct max77693_muic_info *info; 1062 struct max77693_reg_data *init_data; 1063 int num_init_data; 1064 int delay_jiffies; 1065 int ret; 1066 int i; 1067 unsigned int id; 1068 1069 info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), 1070 GFP_KERNEL); 1071 if (!info) 1072 return -ENOMEM; 1073 1074 info->dev = &pdev->dev; 1075 info->max77693 = max77693; 1076 if (info->max77693->regmap_muic) { 1077 dev_dbg(&pdev->dev, "allocate register map\n"); 1078 } else { 1079 info->max77693->regmap_muic = devm_regmap_init_i2c( 1080 info->max77693->muic, 1081 &max77693_muic_regmap_config); 1082 if (IS_ERR(info->max77693->regmap_muic)) { 1083 ret = PTR_ERR(info->max77693->regmap_muic); 1084 dev_err(max77693->dev, 1085 "failed to allocate register map: %d\n", ret); 1086 return ret; 1087 } 1088 } 1089 1090 /* Register input device for button of dock device */ 1091 info->dock = devm_input_allocate_device(&pdev->dev); 1092 if (!info->dock) { 1093 dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); 1094 return -ENOMEM; 1095 } 1096 info->dock->name = "max77693-muic/dock"; 1097 info->dock->phys = "max77693-muic/extcon"; 1098 info->dock->dev.parent = &pdev->dev; 1099 1100 __set_bit(EV_REP, info->dock->evbit); 1101 1102 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); 1103 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); 1104 input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); 1105 input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); 1106 input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); 1107 1108 ret = input_register_device(info->dock); 1109 if (ret < 0) { 1110 dev_err(&pdev->dev, "Cannot register input device error(%d)\n", 1111 ret); 1112 return ret; 1113 } 1114 1115 platform_set_drvdata(pdev, info); 1116 mutex_init(&info->mutex); 1117 1118 INIT_WORK(&info->irq_work, max77693_muic_irq_work); 1119 1120 /* Support irq domain for MAX77693 MUIC device */ 1121 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { 1122 struct max77693_muic_irq *muic_irq = &muic_irqs[i]; 1123 unsigned int virq = 0; 1124 1125 virq = regmap_irq_get_virq(max77693->irq_data_muic, 1126 muic_irq->irq); 1127 if (!virq) 1128 return -EINVAL; 1129 muic_irq->virq = virq; 1130 1131 ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, 1132 max77693_muic_irq_handler, 1133 IRQF_NO_SUSPEND, 1134 muic_irq->name, info); 1135 if (ret) { 1136 dev_err(&pdev->dev, 1137 "failed: irq request (IRQ: %d, error :%d)\n", 1138 muic_irq->irq, ret); 1139 return ret; 1140 } 1141 } 1142 1143 /* Initialize extcon device */ 1144 info->edev = devm_extcon_dev_allocate(&pdev->dev, 1145 max77693_extcon_cable); 1146 if (IS_ERR(info->edev)) { 1147 dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); 1148 return -ENOMEM; 1149 } 1150 1151 ret = devm_extcon_dev_register(&pdev->dev, info->edev); 1152 if (ret) { 1153 dev_err(&pdev->dev, "failed to register extcon device\n"); 1154 return ret; 1155 } 1156 1157 /* Initialize MUIC register by using platform data or default data */ 1158 if (pdata && pdata->muic_data) { 1159 init_data = pdata->muic_data->init_data; 1160 num_init_data = pdata->muic_data->num_init_data; 1161 } else { 1162 init_data = default_init_data; 1163 num_init_data = ARRAY_SIZE(default_init_data); 1164 } 1165 1166 for (i = 0; i < num_init_data; i++) { 1167 enum max77693_irq_source irq_src 1168 = MAX77693_IRQ_GROUP_NR; 1169 1170 regmap_write(info->max77693->regmap_muic, 1171 init_data[i].addr, 1172 init_data[i].data); 1173 1174 switch (init_data[i].addr) { 1175 case MAX77693_MUIC_REG_INTMASK1: 1176 irq_src = MUIC_INT1; 1177 break; 1178 case MAX77693_MUIC_REG_INTMASK2: 1179 irq_src = MUIC_INT2; 1180 break; 1181 case MAX77693_MUIC_REG_INTMASK3: 1182 irq_src = MUIC_INT3; 1183 break; 1184 } 1185 1186 if (irq_src < MAX77693_IRQ_GROUP_NR) 1187 info->max77693->irq_masks_cur[irq_src] 1188 = init_data[i].data; 1189 } 1190 1191 if (pdata && pdata->muic_data) { 1192 struct max77693_muic_platform_data *muic_pdata 1193 = pdata->muic_data; 1194 1195 /* 1196 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB 1197 * h/w path of COMP2/COMN1 on CONTROL1 register. 1198 */ 1199 if (muic_pdata->path_uart) 1200 info->path_uart = muic_pdata->path_uart; 1201 else 1202 info->path_uart = CONTROL1_SW_UART; 1203 1204 if (muic_pdata->path_usb) 1205 info->path_usb = muic_pdata->path_usb; 1206 else 1207 info->path_usb = CONTROL1_SW_USB; 1208 1209 /* 1210 * Default delay time for detecting cable state 1211 * after certain time. 1212 */ 1213 if (muic_pdata->detcable_delay_ms) 1214 delay_jiffies = 1215 msecs_to_jiffies(muic_pdata->detcable_delay_ms); 1216 else 1217 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); 1218 } else { 1219 info->path_usb = CONTROL1_SW_USB; 1220 info->path_uart = CONTROL1_SW_UART; 1221 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); 1222 } 1223 1224 /* Set initial path for UART */ 1225 max77693_muic_set_path(info, info->path_uart, true); 1226 1227 /* Check revision number of MUIC device*/ 1228 ret = regmap_read(info->max77693->regmap_muic, 1229 MAX77693_MUIC_REG_ID, &id); 1230 if (ret < 0) { 1231 dev_err(&pdev->dev, "failed to read revision number\n"); 1232 return ret; 1233 } 1234 dev_info(info->dev, "device ID : 0x%x\n", id); 1235 1236 /* Set ADC debounce time */ 1237 max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); 1238 1239 /* 1240 * Detect accessory after completing the initialization of platform 1241 * 1242 * - Use delayed workqueue to detect cable state and then 1243 * notify cable state to notifiee/platform through uevent. 1244 * After completing the booting of platform, the extcon provider 1245 * driver should notify cable state to upper layer. 1246 */ 1247 INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); 1248 queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, 1249 delay_jiffies); 1250 1251 return ret; 1252 } 1253 1254 static int max77693_muic_remove(struct platform_device *pdev) 1255 { 1256 struct max77693_muic_info *info = platform_get_drvdata(pdev); 1257 1258 cancel_work_sync(&info->irq_work); 1259 input_unregister_device(info->dock); 1260 1261 return 0; 1262 } 1263 1264 static struct platform_driver max77693_muic_driver = { 1265 .driver = { 1266 .name = DEV_NAME, 1267 }, 1268 .probe = max77693_muic_probe, 1269 .remove = max77693_muic_remove, 1270 }; 1271 1272 module_platform_driver(max77693_muic_driver); 1273 1274 MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); 1275 MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); 1276 MODULE_LICENSE("GPL"); 1277 MODULE_ALIAS("platform:extcon-max77693"); 1278