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 enum max77693_muic_adc_debounce_time { 36 ADC_DEBOUNCE_TIME_5MS = 0, 37 ADC_DEBOUNCE_TIME_10MS, 38 ADC_DEBOUNCE_TIME_25MS, 39 ADC_DEBOUNCE_TIME_38_62MS, 40 }; 41 42 struct max77693_muic_info { 43 struct device *dev; 44 struct max77693_dev *max77693; 45 struct extcon_dev *edev; 46 int prev_cable_type; 47 int prev_cable_type_gnd; 48 int prev_chg_type; 49 int prev_button_type; 50 u8 status[2]; 51 52 int irq; 53 struct work_struct irq_work; 54 struct mutex mutex; 55 56 /* 57 * Use delayed workqueue to detect cable state and then 58 * notify cable state to notifiee/platform through uevent. 59 * After completing the booting of platform, the extcon provider 60 * driver should notify cable state to upper layer. 61 */ 62 struct delayed_work wq_detcable; 63 64 /* Button of dock device */ 65 struct input_dev *dock; 66 67 /* 68 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB 69 * h/w path of COMP2/COMN1 on CONTROL1 register. 70 */ 71 int path_usb; 72 int path_uart; 73 }; 74 75 enum max77693_muic_cable_group { 76 MAX77693_CABLE_GROUP_ADC = 0, 77 MAX77693_CABLE_GROUP_ADC_GND, 78 MAX77693_CABLE_GROUP_CHG, 79 MAX77693_CABLE_GROUP_VBVOLT, 80 }; 81 82 enum max77693_muic_charger_type { 83 MAX77693_CHARGER_TYPE_NONE = 0, 84 MAX77693_CHARGER_TYPE_USB, 85 MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, 86 MAX77693_CHARGER_TYPE_DEDICATED_CHG, 87 MAX77693_CHARGER_TYPE_APPLE_500MA, 88 MAX77693_CHARGER_TYPE_APPLE_1A_2A, 89 MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, 90 }; 91 92 /** 93 * struct max77693_muic_irq 94 * @irq: the index of irq list of MUIC device. 95 * @name: the name of irq. 96 * @virq: the virtual irq to use irq domain 97 */ 98 struct max77693_muic_irq { 99 unsigned int irq; 100 const char *name; 101 unsigned int virq; 102 }; 103 104 static struct max77693_muic_irq muic_irqs[] = { 105 { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, 106 { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, 107 { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, 108 { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, 109 { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, 110 { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, 111 { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, 112 { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, 113 { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, 114 { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, 115 { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, 116 { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, 117 { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, 118 { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, 119 { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, 120 { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, 121 }; 122 123 /* Define supported accessory type */ 124 enum max77693_muic_acc_type { 125 MAX77693_MUIC_ADC_GROUND = 0x0, 126 MAX77693_MUIC_ADC_SEND_END_BUTTON, 127 MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, 128 MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, 129 MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, 130 MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, 131 MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, 132 MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, 133 MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, 134 MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, 135 MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, 136 MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, 137 MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, 138 MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, 139 MAX77693_MUIC_ADC_RESERVED_ACC_1, 140 MAX77693_MUIC_ADC_RESERVED_ACC_2, 141 MAX77693_MUIC_ADC_RESERVED_ACC_3, 142 MAX77693_MUIC_ADC_RESERVED_ACC_4, 143 MAX77693_MUIC_ADC_RESERVED_ACC_5, 144 MAX77693_MUIC_ADC_CEA936_AUDIO, 145 MAX77693_MUIC_ADC_PHONE_POWERED_DEV, 146 MAX77693_MUIC_ADC_TTY_CONVERTER, 147 MAX77693_MUIC_ADC_UART_CABLE, 148 MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, 149 MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, 150 MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, 151 MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, 152 MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, 153 MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, 154 MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, 155 MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, 156 MAX77693_MUIC_ADC_OPEN, 157 158 /* The below accessories have same ADC value so ADCLow and 159 ADC1K bit is used to separate specific accessory */ 160 MAX77693_MUIC_GND_USB_OTG = 0x100, /* ADC:0x0, VBVolot:0, ADCLow:0, ADC1K:0 */ 161 MAX77693_MUIC_GND_USB_OTG_VB = 0x104, /* ADC:0x0, VBVolot:1, ADCLow:0, ADC1K:0 */ 162 MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:0 */ 163 MAX77693_MUIC_GND_MHL = 0x103, /* ADC:0x0, VBVolot:0, ADCLow:1, ADC1K:1 */ 164 MAX77693_MUIC_GND_MHL_VB = 0x107, /* ADC:0x0, VBVolot:1, ADCLow:1, ADC1K:1 */ 165 }; 166 167 /* MAX77693 MUIC device support below list of accessories(external connector) */ 168 enum { 169 EXTCON_CABLE_USB = 0, 170 EXTCON_CABLE_USB_HOST, 171 EXTCON_CABLE_TA, 172 EXTCON_CABLE_FAST_CHARGER, 173 EXTCON_CABLE_SLOW_CHARGER, 174 EXTCON_CABLE_CHARGE_DOWNSTREAM, 175 EXTCON_CABLE_MHL, 176 EXTCON_CABLE_MHL_TA, 177 EXTCON_CABLE_JIG_USB_ON, 178 EXTCON_CABLE_JIG_USB_OFF, 179 EXTCON_CABLE_JIG_UART_OFF, 180 EXTCON_CABLE_JIG_UART_ON, 181 EXTCON_CABLE_DOCK_SMART, 182 EXTCON_CABLE_DOCK_DESK, 183 EXTCON_CABLE_DOCK_AUDIO, 184 185 _EXTCON_CABLE_NUM, 186 }; 187 188 static const char *max77693_extcon_cable[] = { 189 [EXTCON_CABLE_USB] = "USB", 190 [EXTCON_CABLE_USB_HOST] = "USB-Host", 191 [EXTCON_CABLE_TA] = "TA", 192 [EXTCON_CABLE_FAST_CHARGER] = "Fast-charger", 193 [EXTCON_CABLE_SLOW_CHARGER] = "Slow-charger", 194 [EXTCON_CABLE_CHARGE_DOWNSTREAM] = "Charge-downstream", 195 [EXTCON_CABLE_MHL] = "MHL", 196 [EXTCON_CABLE_MHL_TA] = "MHL_TA", 197 [EXTCON_CABLE_JIG_USB_ON] = "JIG-USB-ON", 198 [EXTCON_CABLE_JIG_USB_OFF] = "JIG-USB-OFF", 199 [EXTCON_CABLE_JIG_UART_OFF] = "JIG-UART-OFF", 200 [EXTCON_CABLE_JIG_UART_ON] = "Dock-Car", 201 [EXTCON_CABLE_DOCK_SMART] = "Dock-Smart", 202 [EXTCON_CABLE_DOCK_DESK] = "Dock-Desk", 203 [EXTCON_CABLE_DOCK_AUDIO] = "Dock-Audio", 204 205 NULL, 206 }; 207 208 /* 209 * max77693_muic_set_debounce_time - Set the debounce time of ADC 210 * @info: the instance including private data of max77693 MUIC 211 * @time: the debounce time of ADC 212 */ 213 static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, 214 enum max77693_muic_adc_debounce_time time) 215 { 216 int ret; 217 218 switch (time) { 219 case ADC_DEBOUNCE_TIME_5MS: 220 case ADC_DEBOUNCE_TIME_10MS: 221 case ADC_DEBOUNCE_TIME_25MS: 222 case ADC_DEBOUNCE_TIME_38_62MS: 223 ret = max77693_update_reg(info->max77693->regmap_muic, 224 MAX77693_MUIC_REG_CTRL3, 225 time << CONTROL3_ADCDBSET_SHIFT, 226 CONTROL3_ADCDBSET_MASK); 227 if (ret) { 228 dev_err(info->dev, "failed to set ADC debounce time\n"); 229 return -EAGAIN; 230 } 231 break; 232 default: 233 dev_err(info->dev, "invalid ADC debounce time\n"); 234 return -EINVAL; 235 } 236 237 return 0; 238 }; 239 240 /* 241 * max77693_muic_set_path - Set hardware line according to attached cable 242 * @info: the instance including private data of max77693 MUIC 243 * @value: the path according to attached cable 244 * @attached: the state of cable (true:attached, false:detached) 245 * 246 * The max77693 MUIC device share outside H/W line among a varity of cables 247 * so, this function set internal path of H/W line according to the type of 248 * attached cable. 249 */ 250 static int max77693_muic_set_path(struct max77693_muic_info *info, 251 u8 val, bool attached) 252 { 253 int ret = 0; 254 u8 ctrl1, ctrl2 = 0; 255 256 if (attached) 257 ctrl1 = val; 258 else 259 ctrl1 = CONTROL1_SW_OPEN; 260 261 ret = max77693_update_reg(info->max77693->regmap_muic, 262 MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK); 263 if (ret < 0) { 264 dev_err(info->dev, "failed to update MUIC register\n"); 265 return -EAGAIN; 266 } 267 268 if (attached) 269 ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ 270 else 271 ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ 272 273 ret = max77693_update_reg(info->max77693->regmap_muic, 274 MAX77693_MUIC_REG_CTRL2, ctrl2, 275 CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK); 276 if (ret < 0) { 277 dev_err(info->dev, "failed to update MUIC register\n"); 278 return -EAGAIN; 279 } 280 281 dev_info(info->dev, 282 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", 283 ctrl1, ctrl2, attached ? "attached" : "detached"); 284 285 return 0; 286 } 287 288 /* 289 * max77693_muic_get_cable_type - Return cable type and check cable state 290 * @info: the instance including private data of max77693 MUIC 291 * @group: the path according to attached cable 292 * @attached: store cable state and return 293 * 294 * This function check the cable state either attached or detached, 295 * and then divide precise type of cable according to cable group. 296 * - MAX77693_CABLE_GROUP_ADC 297 * - MAX77693_CABLE_GROUP_ADC_GND 298 * - MAX77693_CABLE_GROUP_CHG 299 * - MAX77693_CABLE_GROUP_VBVOLT 300 */ 301 static int max77693_muic_get_cable_type(struct max77693_muic_info *info, 302 enum max77693_muic_cable_group group, bool *attached) 303 { 304 int cable_type = 0; 305 int adc; 306 int adc1k; 307 int adclow; 308 int vbvolt; 309 int chg_type; 310 311 switch (group) { 312 case MAX77693_CABLE_GROUP_ADC: 313 /* 314 * Read ADC value to check cable type and decide cable state 315 * according to cable type 316 */ 317 adc = info->status[0] & STATUS1_ADC_MASK; 318 adc >>= STATUS1_ADC_SHIFT; 319 320 /* 321 * Check current cable state/cable type and store cable type 322 * (info->prev_cable_type) for handling cable when cable is 323 * detached. 324 */ 325 if (adc == MAX77693_MUIC_ADC_OPEN) { 326 *attached = false; 327 328 cable_type = info->prev_cable_type; 329 info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; 330 } else { 331 *attached = true; 332 333 cable_type = info->prev_cable_type = adc; 334 } 335 break; 336 case MAX77693_CABLE_GROUP_ADC_GND: 337 /* 338 * Read ADC value to check cable type and decide cable state 339 * according to cable type 340 */ 341 adc = info->status[0] & STATUS1_ADC_MASK; 342 adc >>= STATUS1_ADC_SHIFT; 343 344 /* 345 * Check current cable state/cable type and store cable type 346 * (info->prev_cable_type/_gnd) for handling cable when cable 347 * is detached. 348 */ 349 if (adc == MAX77693_MUIC_ADC_OPEN) { 350 *attached = false; 351 352 cable_type = info->prev_cable_type_gnd; 353 info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; 354 } else { 355 *attached = true; 356 357 adclow = info->status[0] & STATUS1_ADCLOW_MASK; 358 adclow >>= STATUS1_ADCLOW_SHIFT; 359 adc1k = info->status[0] & STATUS1_ADC1K_MASK; 360 adc1k >>= STATUS1_ADC1K_SHIFT; 361 362 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; 363 vbvolt >>= STATUS2_VBVOLT_SHIFT; 364 365 /** 366 * [0x1][VBVolt][ADCLow][ADC1K] 367 * [0x1 0 0 0 ] : USB_OTG 368 * [0x1 1 0 0 ] : USB_OTG_VB 369 * [0x1 0 1 0 ] : Audio Video Cable with load 370 * [0x1 0 1 1 ] : MHL without charging connector 371 * [0x1 1 1 1 ] : MHL with charging connector 372 */ 373 cable_type = ((0x1 << 8) 374 | (vbvolt << 2) 375 | (adclow << 1) 376 | adc1k); 377 378 info->prev_cable_type = adc; 379 info->prev_cable_type_gnd = cable_type; 380 } 381 382 break; 383 case MAX77693_CABLE_GROUP_CHG: 384 /* 385 * Read charger type to check cable type and decide cable state 386 * according to type of charger cable. 387 */ 388 chg_type = info->status[1] & STATUS2_CHGTYP_MASK; 389 chg_type >>= STATUS2_CHGTYP_SHIFT; 390 391 if (chg_type == MAX77693_CHARGER_TYPE_NONE) { 392 *attached = false; 393 394 cable_type = info->prev_chg_type; 395 info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; 396 } else { 397 *attached = true; 398 399 /* 400 * Check current cable state/cable type and store cable 401 * type(info->prev_chg_type) for handling cable when 402 * charger cable is detached. 403 */ 404 cable_type = info->prev_chg_type = chg_type; 405 } 406 407 break; 408 case MAX77693_CABLE_GROUP_VBVOLT: 409 /* 410 * Read ADC value to check cable type and decide cable state 411 * according to cable type 412 */ 413 adc = info->status[0] & STATUS1_ADC_MASK; 414 adc >>= STATUS1_ADC_SHIFT; 415 chg_type = info->status[1] & STATUS2_CHGTYP_MASK; 416 chg_type >>= STATUS2_CHGTYP_SHIFT; 417 418 if (adc == MAX77693_MUIC_ADC_OPEN 419 && chg_type == MAX77693_CHARGER_TYPE_NONE) 420 *attached = false; 421 else 422 *attached = true; 423 424 /* 425 * Read vbvolt field, if vbvolt is 1, 426 * this cable is used for charging. 427 */ 428 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK; 429 vbvolt >>= STATUS2_VBVOLT_SHIFT; 430 431 cable_type = vbvolt; 432 break; 433 default: 434 dev_err(info->dev, "Unknown cable group (%d)\n", group); 435 cable_type = -EINVAL; 436 break; 437 } 438 439 return cable_type; 440 } 441 442 static int max77693_muic_dock_handler(struct max77693_muic_info *info, 443 int cable_type, bool attached) 444 { 445 int ret = 0; 446 int vbvolt; 447 bool cable_attached; 448 char dock_name[CABLE_NAME_MAX]; 449 450 dev_info(info->dev, 451 "external connector is %s (adc:0x%02x)\n", 452 attached ? "attached" : "detached", cable_type); 453 454 switch (cable_type) { 455 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 456 /* 457 * Check power cable whether attached or detached state. 458 * The Dock-Smart device need surely external power supply. 459 * If power cable(USB/TA) isn't connected to Dock device, 460 * user can't use Dock-Smart for desktop mode. 461 */ 462 vbvolt = max77693_muic_get_cable_type(info, 463 MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); 464 if (attached && !vbvolt) { 465 dev_warn(info->dev, 466 "Cannot detect external power supply\n"); 467 return 0; 468 } 469 470 /* 471 * Notify Dock-Smart/MHL state. 472 * - Dock-Smart device include three type of cable which 473 * are HDMI, USB for mouse/keyboard and micro-usb port 474 * for USB/TA cable. Dock-Smart device need always exteranl 475 * power supply(USB/TA cable through micro-usb cable). Dock- 476 * Smart device support screen output of target to separate 477 * monitor and mouse/keyboard for desktop mode. 478 * 479 * Features of 'USB/TA cable with Dock-Smart device' 480 * - Support MHL 481 * - Support external output feature of audio 482 * - Support charging through micro-usb port without data 483 * connection if TA cable is connected to target. 484 * - Support charging and data connection through micro-usb port 485 * if USB cable is connected between target and host 486 * device. 487 * - Support OTG device (Mouse/Keyboard) 488 */ 489 ret = max77693_muic_set_path(info, info->path_usb, attached); 490 if (ret < 0) 491 return ret; 492 493 extcon_set_cable_state(info->edev, "Dock-Smart", attached); 494 extcon_set_cable_state(info->edev, "MHL", attached); 495 goto out; 496 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ 497 strcpy(dock_name, "Dock-Car"); 498 break; 499 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ 500 strcpy(dock_name, "Dock-Desk"); 501 break; 502 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 503 strcpy(dock_name, "Dock-Audio"); 504 if (!attached) 505 extcon_set_cable_state(info->edev, "USB", false); 506 break; 507 default: 508 dev_err(info->dev, "failed to detect %s dock device\n", 509 attached ? "attached" : "detached"); 510 return -EINVAL; 511 } 512 513 /* Dock-Car/Desk/Audio, PATH:AUDIO */ 514 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); 515 if (ret < 0) 516 return ret; 517 extcon_set_cable_state(info->edev, dock_name, attached); 518 519 out: 520 return 0; 521 } 522 523 static int max77693_muic_dock_button_handler(struct max77693_muic_info *info, 524 int button_type, bool attached) 525 { 526 struct input_dev *dock = info->dock; 527 unsigned int code; 528 529 switch (button_type) { 530 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1 531 ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1: 532 /* DOCK_KEY_PREV */ 533 code = KEY_PREVIOUSSONG; 534 break; 535 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1 536 ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1: 537 /* DOCK_KEY_NEXT */ 538 code = KEY_NEXTSONG; 539 break; 540 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: 541 /* DOCK_VOL_DOWN */ 542 code = KEY_VOLUMEDOWN; 543 break; 544 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: 545 /* DOCK_VOL_UP */ 546 code = KEY_VOLUMEUP; 547 break; 548 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1 549 ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1: 550 /* DOCK_KEY_PLAY_PAUSE */ 551 code = KEY_PLAYPAUSE; 552 break; 553 default: 554 dev_err(info->dev, 555 "failed to detect %s key (adc:0x%x)\n", 556 attached ? "pressed" : "released", button_type); 557 return -EINVAL; 558 } 559 560 input_event(dock, EV_KEY, code, attached); 561 input_sync(dock); 562 563 return 0; 564 } 565 566 static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info) 567 { 568 int cable_type_gnd; 569 int ret = 0; 570 bool attached; 571 572 cable_type_gnd = max77693_muic_get_cable_type(info, 573 MAX77693_CABLE_GROUP_ADC_GND, &attached); 574 575 switch (cable_type_gnd) { 576 case MAX77693_MUIC_GND_USB_OTG: 577 case MAX77693_MUIC_GND_USB_OTG_VB: 578 /* USB_OTG, PATH: AP_USB */ 579 ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached); 580 if (ret < 0) 581 return ret; 582 extcon_set_cable_state(info->edev, "USB-Host", attached); 583 break; 584 case MAX77693_MUIC_GND_AV_CABLE_LOAD: 585 /* Audio Video Cable with load, PATH:AUDIO */ 586 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached); 587 if (ret < 0) 588 return ret; 589 extcon_set_cable_state(info->edev, 590 "Audio-video-load", attached); 591 break; 592 case MAX77693_MUIC_GND_MHL: 593 case MAX77693_MUIC_GND_MHL_VB: 594 /* MHL or MHL with USB/TA cable */ 595 extcon_set_cable_state(info->edev, "MHL", attached); 596 break; 597 default: 598 dev_err(info->dev, "failed to detect %s cable of gnd type\n", 599 attached ? "attached" : "detached"); 600 return -EINVAL; 601 } 602 603 return 0; 604 } 605 606 static int max77693_muic_jig_handler(struct max77693_muic_info *info, 607 int cable_type, bool attached) 608 { 609 char cable_name[32]; 610 int ret = 0; 611 u8 path = CONTROL1_SW_OPEN; 612 613 dev_info(info->dev, 614 "external connector is %s (adc:0x%02x)\n", 615 attached ? "attached" : "detached", cable_type); 616 617 switch (cable_type) { 618 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ 619 /* PATH:AP_USB */ 620 strcpy(cable_name, "JIG-USB-OFF"); 621 path = CONTROL1_SW_USB; 622 break; 623 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ 624 /* PATH:AP_USB */ 625 strcpy(cable_name, "JIG-USB-ON"); 626 path = CONTROL1_SW_USB; 627 break; 628 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ 629 /* PATH:AP_UART */ 630 strcpy(cable_name, "JIG-UART-OFF"); 631 path = CONTROL1_SW_UART; 632 break; 633 default: 634 dev_err(info->dev, "failed to detect %s jig cable\n", 635 attached ? "attached" : "detached"); 636 return -EINVAL; 637 } 638 639 ret = max77693_muic_set_path(info, path, attached); 640 if (ret < 0) 641 return ret; 642 643 extcon_set_cable_state(info->edev, cable_name, attached); 644 645 return 0; 646 } 647 648 static int max77693_muic_adc_handler(struct max77693_muic_info *info) 649 { 650 int cable_type; 651 int button_type; 652 bool attached; 653 int ret = 0; 654 655 /* Check accessory state which is either detached or attached */ 656 cable_type = max77693_muic_get_cable_type(info, 657 MAX77693_CABLE_GROUP_ADC, &attached); 658 659 dev_info(info->dev, 660 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", 661 attached ? "attached" : "detached", cable_type, 662 info->prev_cable_type); 663 664 switch (cable_type) { 665 case MAX77693_MUIC_ADC_GROUND: 666 /* USB_OTG/MHL/Audio */ 667 max77693_muic_adc_ground_handler(info); 668 break; 669 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: 670 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: 671 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: 672 /* JIG */ 673 ret = max77693_muic_jig_handler(info, cable_type, attached); 674 if (ret < 0) 675 return ret; 676 break; 677 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 678 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */ 679 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ 680 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 681 /* 682 * DOCK device 683 * 684 * The MAX77693 MUIC device can detect total 34 cable type 685 * except of charger cable and MUIC device didn't define 686 * specfic role of cable in the range of from 0x01 to 0x12 687 * of ADC value. So, can use/define cable with no role according 688 * to schema of hardware board. 689 */ 690 ret = max77693_muic_dock_handler(info, cable_type, attached); 691 if (ret < 0) 692 return ret; 693 break; 694 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ 695 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ 696 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ 697 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ 698 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ 699 /* 700 * Button of DOCK device 701 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button 702 * 703 * The MAX77693 MUIC device can detect total 34 cable type 704 * except of charger cable and MUIC device didn't define 705 * specfic role of cable in the range of from 0x01 to 0x12 706 * of ADC value. So, can use/define cable with no role according 707 * to schema of hardware board. 708 */ 709 if (attached) 710 button_type = info->prev_button_type = cable_type; 711 else 712 button_type = info->prev_button_type; 713 714 ret = max77693_muic_dock_button_handler(info, button_type, 715 attached); 716 if (ret < 0) 717 return ret; 718 break; 719 case MAX77693_MUIC_ADC_SEND_END_BUTTON: 720 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: 721 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: 722 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: 723 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: 724 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: 725 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: 726 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: 727 case MAX77693_MUIC_ADC_RESERVED_ACC_1: 728 case MAX77693_MUIC_ADC_RESERVED_ACC_2: 729 case MAX77693_MUIC_ADC_RESERVED_ACC_4: 730 case MAX77693_MUIC_ADC_RESERVED_ACC_5: 731 case MAX77693_MUIC_ADC_CEA936_AUDIO: 732 case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: 733 case MAX77693_MUIC_ADC_TTY_CONVERTER: 734 case MAX77693_MUIC_ADC_UART_CABLE: 735 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: 736 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: 737 /* 738 * This accessory isn't used in general case if it is specially 739 * needed to detect additional accessory, should implement 740 * proper operation when this accessory is attached/detached. 741 */ 742 dev_info(info->dev, 743 "accessory is %s but it isn't used (adc:0x%x)\n", 744 attached ? "attached" : "detached", cable_type); 745 return -EAGAIN; 746 default: 747 dev_err(info->dev, 748 "failed to detect %s accessory (adc:0x%x)\n", 749 attached ? "attached" : "detached", cable_type); 750 return -EINVAL; 751 } 752 753 return 0; 754 } 755 756 static int max77693_muic_chg_handler(struct max77693_muic_info *info) 757 { 758 int chg_type; 759 int cable_type_gnd; 760 int cable_type; 761 bool attached; 762 bool cable_attached; 763 int ret = 0; 764 765 chg_type = max77693_muic_get_cable_type(info, 766 MAX77693_CABLE_GROUP_CHG, &attached); 767 768 dev_info(info->dev, 769 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", 770 attached ? "attached" : "detached", 771 chg_type, info->prev_chg_type); 772 773 switch (chg_type) { 774 case MAX77693_CHARGER_TYPE_USB: 775 case MAX77693_CHARGER_TYPE_DEDICATED_CHG: 776 case MAX77693_CHARGER_TYPE_NONE: 777 /* Check MAX77693_CABLE_GROUP_ADC_GND type */ 778 cable_type_gnd = max77693_muic_get_cable_type(info, 779 MAX77693_CABLE_GROUP_ADC_GND, 780 &cable_attached); 781 switch (cable_type_gnd) { 782 case MAX77693_MUIC_GND_MHL: 783 case MAX77693_MUIC_GND_MHL_VB: 784 /* 785 * MHL cable with MHL_TA(USB/TA) cable 786 * - MHL cable include two port(HDMI line and separate micro- 787 * usb port. When the target connect MHL cable, extcon driver 788 * check whether MHL_TA(USB/TA) cable is connected. If MHL_TA 789 * cable is connected, extcon driver notify state to notifiee 790 * for charging battery. 791 * 792 * Features of 'MHL_TA(USB/TA) with MHL cable' 793 * - Support MHL 794 * - Support charging through micro-usb port without data connection 795 */ 796 extcon_set_cable_state(info->edev, "MHL_TA", attached); 797 if (!cable_attached) 798 extcon_set_cable_state(info->edev, "MHL", cable_attached); 799 break; 800 } 801 802 /* Check MAX77693_CABLE_GROUP_ADC type */ 803 cable_type = max77693_muic_get_cable_type(info, 804 MAX77693_CABLE_GROUP_ADC, 805 &cable_attached); 806 switch (cable_type) { 807 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 808 /* 809 * Dock-Audio device with USB/TA cable 810 * - Dock device include two port(Dock-Audio and micro-usb 811 * port). When the target connect Dock-Audio device, extcon 812 * driver check whether USB/TA cable is connected. If USB/TA 813 * cable is connected, extcon driver notify state to notifiee 814 * for charging battery. 815 * 816 * Features of 'USB/TA cable with Dock-Audio device' 817 * - Support external output feature of audio. 818 * - Support charging through micro-usb port without data 819 * connection. 820 */ 821 extcon_set_cable_state(info->edev, "USB", attached); 822 823 if (!cable_attached) 824 extcon_set_cable_state(info->edev, "Dock-Audio", cable_attached); 825 break; 826 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 827 /* 828 * Dock-Smart device with USB/TA cable 829 * - Dock-Desk device include three type of cable which 830 * are HDMI, USB for mouse/keyboard and micro-usb port 831 * for USB/TA cable. Dock-Smart device need always exteranl 832 * power supply(USB/TA cable through micro-usb cable). Dock- 833 * Smart device support screen output of target to separate 834 * monitor and mouse/keyboard for desktop mode. 835 * 836 * Features of 'USB/TA cable with Dock-Smart device' 837 * - Support MHL 838 * - Support external output feature of audio 839 * - Support charging through micro-usb port without data 840 * connection if TA cable is connected to target. 841 * - Support charging and data connection through micro-usb port 842 * if USB cable is connected between target and host 843 * device. 844 * - Support OTG device (Mouse/Keyboard) 845 */ 846 ret = max77693_muic_set_path(info, info->path_usb, attached); 847 if (ret < 0) 848 return ret; 849 850 extcon_set_cable_state(info->edev, "Dock-Smart", attached); 851 extcon_set_cable_state(info->edev, "MHL", attached); 852 853 break; 854 } 855 856 /* Check MAX77693_CABLE_GROUP_CHG type */ 857 switch (chg_type) { 858 case MAX77693_CHARGER_TYPE_NONE: 859 /* 860 * When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable 861 * is attached, muic device happen below two interrupt. 862 * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting MHL/Dock-Audio. 863 * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting USB/TA cable 864 * connected to MHL or Dock-Audio. 865 * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC interrupt 866 * than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt. 867 * 868 * If user attach MHL (with USB/TA cable and immediately detach 869 * MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP 870 * interrupt is happened, USB/TA cable remain connected state to 871 * target. But USB/TA cable isn't connected to target. The user 872 * be face with unusual action. So, driver should check this 873 * situation in spite of, that previous charger type is N/A. 874 */ 875 break; 876 case MAX77693_CHARGER_TYPE_USB: 877 /* Only USB cable, PATH:AP_USB */ 878 ret = max77693_muic_set_path(info, info->path_usb, attached); 879 if (ret < 0) 880 return ret; 881 882 extcon_set_cable_state(info->edev, "USB", attached); 883 break; 884 case MAX77693_CHARGER_TYPE_DEDICATED_CHG: 885 /* Only TA cable */ 886 extcon_set_cable_state(info->edev, "TA", attached); 887 break; 888 } 889 break; 890 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: 891 extcon_set_cable_state(info->edev, 892 "Charge-downstream", attached); 893 break; 894 case MAX77693_CHARGER_TYPE_APPLE_500MA: 895 extcon_set_cable_state(info->edev, "Slow-charger", attached); 896 break; 897 case MAX77693_CHARGER_TYPE_APPLE_1A_2A: 898 extcon_set_cable_state(info->edev, "Fast-charger", attached); 899 break; 900 case MAX77693_CHARGER_TYPE_DEAD_BATTERY: 901 break; 902 default: 903 dev_err(info->dev, 904 "failed to detect %s accessory (chg_type:0x%x)\n", 905 attached ? "attached" : "detached", chg_type); 906 return -EINVAL; 907 } 908 909 return 0; 910 } 911 912 static void max77693_muic_irq_work(struct work_struct *work) 913 { 914 struct max77693_muic_info *info = container_of(work, 915 struct max77693_muic_info, irq_work); 916 int irq_type = -1; 917 int i, ret = 0; 918 919 if (!info->edev) 920 return; 921 922 mutex_lock(&info->mutex); 923 924 for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++) 925 if (info->irq == muic_irqs[i].virq) 926 irq_type = muic_irqs[i].irq; 927 928 ret = max77693_bulk_read(info->max77693->regmap_muic, 929 MAX77693_MUIC_REG_STATUS1, 2, info->status); 930 if (ret) { 931 dev_err(info->dev, "failed to read MUIC register\n"); 932 mutex_unlock(&info->mutex); 933 return; 934 } 935 936 switch (irq_type) { 937 case MAX77693_MUIC_IRQ_INT1_ADC: 938 case MAX77693_MUIC_IRQ_INT1_ADC_LOW: 939 case MAX77693_MUIC_IRQ_INT1_ADC_ERR: 940 case MAX77693_MUIC_IRQ_INT1_ADC1K: 941 /* Handle all of accessory except for 942 type of charger accessory */ 943 ret = max77693_muic_adc_handler(info); 944 break; 945 case MAX77693_MUIC_IRQ_INT2_CHGTYP: 946 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: 947 case MAX77693_MUIC_IRQ_INT2_DCDTMR: 948 case MAX77693_MUIC_IRQ_INT2_DXOVP: 949 case MAX77693_MUIC_IRQ_INT2_VBVOLT: 950 case MAX77693_MUIC_IRQ_INT2_VIDRM: 951 /* Handle charger accessory */ 952 ret = max77693_muic_chg_handler(info); 953 break; 954 case MAX77693_MUIC_IRQ_INT3_EOC: 955 case MAX77693_MUIC_IRQ_INT3_CGMBC: 956 case MAX77693_MUIC_IRQ_INT3_OVP: 957 case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: 958 case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: 959 case MAX77693_MUIC_IRQ_INT3_BAT_DET: 960 break; 961 default: 962 dev_err(info->dev, "muic interrupt: irq %d occurred\n", 963 irq_type); 964 mutex_unlock(&info->mutex); 965 return; 966 } 967 968 if (ret < 0) 969 dev_err(info->dev, "failed to handle MUIC interrupt\n"); 970 971 mutex_unlock(&info->mutex); 972 973 return; 974 } 975 976 static irqreturn_t max77693_muic_irq_handler(int irq, void *data) 977 { 978 struct max77693_muic_info *info = data; 979 980 info->irq = irq; 981 schedule_work(&info->irq_work); 982 983 return IRQ_HANDLED; 984 } 985 986 static struct regmap_config max77693_muic_regmap_config = { 987 .reg_bits = 8, 988 .val_bits = 8, 989 }; 990 991 static int max77693_muic_detect_accessory(struct max77693_muic_info *info) 992 { 993 int ret = 0; 994 int adc; 995 int chg_type; 996 bool attached; 997 998 mutex_lock(&info->mutex); 999 1000 /* Read STATUSx register to detect accessory */ 1001 ret = max77693_bulk_read(info->max77693->regmap_muic, 1002 MAX77693_MUIC_REG_STATUS1, 2, info->status); 1003 if (ret) { 1004 dev_err(info->dev, "failed to read MUIC register\n"); 1005 mutex_unlock(&info->mutex); 1006 return -EINVAL; 1007 } 1008 1009 adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, 1010 &attached); 1011 if (attached && adc != MAX77693_MUIC_ADC_OPEN) { 1012 ret = max77693_muic_adc_handler(info); 1013 if (ret < 0) { 1014 dev_err(info->dev, "Cannot detect accessory\n"); 1015 mutex_unlock(&info->mutex); 1016 return ret; 1017 } 1018 } 1019 1020 chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, 1021 &attached); 1022 if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { 1023 ret = max77693_muic_chg_handler(info); 1024 if (ret < 0) { 1025 dev_err(info->dev, "Cannot detect charger accessory\n"); 1026 mutex_unlock(&info->mutex); 1027 return ret; 1028 } 1029 } 1030 1031 mutex_unlock(&info->mutex); 1032 1033 return 0; 1034 } 1035 1036 static void max77693_muic_detect_cable_wq(struct work_struct *work) 1037 { 1038 struct max77693_muic_info *info = container_of(to_delayed_work(work), 1039 struct max77693_muic_info, wq_detcable); 1040 1041 max77693_muic_detect_accessory(info); 1042 } 1043 1044 static int max77693_muic_probe(struct platform_device *pdev) 1045 { 1046 struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); 1047 struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); 1048 struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; 1049 struct max77693_muic_info *info; 1050 int delay_jiffies; 1051 int ret; 1052 int i; 1053 u8 id; 1054 1055 info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), 1056 GFP_KERNEL); 1057 if (!info) { 1058 dev_err(&pdev->dev, "failed to allocate memory\n"); 1059 return -ENOMEM; 1060 } 1061 info->dev = &pdev->dev; 1062 info->max77693 = max77693; 1063 if (info->max77693->regmap_muic) { 1064 dev_dbg(&pdev->dev, "allocate register map\n"); 1065 } else { 1066 info->max77693->regmap_muic = devm_regmap_init_i2c( 1067 info->max77693->muic, 1068 &max77693_muic_regmap_config); 1069 if (IS_ERR(info->max77693->regmap_muic)) { 1070 ret = PTR_ERR(info->max77693->regmap_muic); 1071 dev_err(max77693->dev, 1072 "failed to allocate register map: %d\n", ret); 1073 return ret; 1074 } 1075 } 1076 1077 /* Register input device for button of dock device */ 1078 info->dock = devm_input_allocate_device(&pdev->dev); 1079 if (!info->dock) { 1080 dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); 1081 return -ENOMEM; 1082 } 1083 info->dock->name = "max77693-muic/dock"; 1084 info->dock->phys = "max77693-muic/extcon"; 1085 info->dock->dev.parent = &pdev->dev; 1086 1087 __set_bit(EV_REP, info->dock->evbit); 1088 1089 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); 1090 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); 1091 input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); 1092 input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); 1093 input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); 1094 1095 ret = input_register_device(info->dock); 1096 if (ret < 0) { 1097 dev_err(&pdev->dev, "Cannot register input device error(%d)\n", 1098 ret); 1099 return ret; 1100 } 1101 1102 platform_set_drvdata(pdev, info); 1103 mutex_init(&info->mutex); 1104 1105 INIT_WORK(&info->irq_work, max77693_muic_irq_work); 1106 1107 /* Support irq domain for MAX77693 MUIC device */ 1108 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { 1109 struct max77693_muic_irq *muic_irq = &muic_irqs[i]; 1110 unsigned int virq = 0; 1111 1112 virq = irq_create_mapping(max77693->irq_domain, muic_irq->irq); 1113 if (!virq) { 1114 ret = -EINVAL; 1115 goto err_irq; 1116 } 1117 muic_irq->virq = virq; 1118 1119 ret = request_threaded_irq(virq, NULL, 1120 max77693_muic_irq_handler, 1121 IRQF_NO_SUSPEND, 1122 muic_irq->name, info); 1123 if (ret) { 1124 dev_err(&pdev->dev, 1125 "failed: irq request (IRQ: %d," 1126 " error :%d)\n", 1127 muic_irq->irq, ret); 1128 goto err_irq; 1129 } 1130 } 1131 1132 /* Initialize extcon device */ 1133 info->edev = devm_kzalloc(&pdev->dev, sizeof(struct extcon_dev), 1134 GFP_KERNEL); 1135 if (!info->edev) { 1136 dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); 1137 ret = -ENOMEM; 1138 goto err_irq; 1139 } 1140 info->edev->name = DEV_NAME; 1141 info->edev->supported_cable = max77693_extcon_cable; 1142 ret = extcon_dev_register(info->edev, NULL); 1143 if (ret) { 1144 dev_err(&pdev->dev, "failed to register extcon device\n"); 1145 goto err_irq; 1146 } 1147 1148 /* Initialize MUIC register by using platform data */ 1149 for (i = 0 ; i < muic_pdata->num_init_data ; i++) { 1150 enum max77693_irq_source irq_src = MAX77693_IRQ_GROUP_NR; 1151 1152 max77693_write_reg(info->max77693->regmap_muic, 1153 muic_pdata->init_data[i].addr, 1154 muic_pdata->init_data[i].data); 1155 1156 switch (muic_pdata->init_data[i].addr) { 1157 case MAX77693_MUIC_REG_INTMASK1: 1158 irq_src = MUIC_INT1; 1159 break; 1160 case MAX77693_MUIC_REG_INTMASK2: 1161 irq_src = MUIC_INT2; 1162 break; 1163 case MAX77693_MUIC_REG_INTMASK3: 1164 irq_src = MUIC_INT3; 1165 break; 1166 } 1167 1168 if (irq_src < MAX77693_IRQ_GROUP_NR) 1169 info->max77693->irq_masks_cur[irq_src] 1170 = muic_pdata->init_data[i].data; 1171 } 1172 1173 /* 1174 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB 1175 * h/w path of COMP2/COMN1 on CONTROL1 register. 1176 */ 1177 if (muic_pdata->path_uart) 1178 info->path_uart = muic_pdata->path_uart; 1179 else 1180 info->path_uart = CONTROL1_SW_UART; 1181 1182 if (muic_pdata->path_usb) 1183 info->path_usb = muic_pdata->path_usb; 1184 else 1185 info->path_usb = CONTROL1_SW_USB; 1186 1187 /* Set initial path for UART */ 1188 max77693_muic_set_path(info, info->path_uart, true); 1189 1190 /* Check revision number of MUIC device*/ 1191 ret = max77693_read_reg(info->max77693->regmap_muic, 1192 MAX77693_MUIC_REG_ID, &id); 1193 if (ret < 0) { 1194 dev_err(&pdev->dev, "failed to read revision number\n"); 1195 goto err_extcon; 1196 } 1197 dev_info(info->dev, "device ID : 0x%x\n", id); 1198 1199 /* Set ADC debounce time */ 1200 max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); 1201 1202 /* 1203 * Detect accessory after completing the initialization of platform 1204 * 1205 * - Use delayed workqueue to detect cable state and then 1206 * notify cable state to notifiee/platform through uevent. 1207 * After completing the booting of platform, the extcon provider 1208 * driver should notify cable state to upper layer. 1209 */ 1210 INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); 1211 if (muic_pdata->detcable_delay_ms) 1212 delay_jiffies = msecs_to_jiffies(muic_pdata->detcable_delay_ms); 1213 else 1214 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); 1215 schedule_delayed_work(&info->wq_detcable, delay_jiffies); 1216 1217 return ret; 1218 1219 err_extcon: 1220 extcon_dev_unregister(info->edev); 1221 err_irq: 1222 while (--i >= 0) 1223 free_irq(muic_irqs[i].virq, info); 1224 return ret; 1225 } 1226 1227 static int max77693_muic_remove(struct platform_device *pdev) 1228 { 1229 struct max77693_muic_info *info = platform_get_drvdata(pdev); 1230 int i; 1231 1232 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) 1233 free_irq(muic_irqs[i].virq, info); 1234 cancel_work_sync(&info->irq_work); 1235 input_unregister_device(info->dock); 1236 extcon_dev_unregister(info->edev); 1237 1238 return 0; 1239 } 1240 1241 static struct platform_driver max77693_muic_driver = { 1242 .driver = { 1243 .name = DEV_NAME, 1244 .owner = THIS_MODULE, 1245 }, 1246 .probe = max77693_muic_probe, 1247 .remove = max77693_muic_remove, 1248 }; 1249 1250 module_platform_driver(max77693_muic_driver); 1251 1252 MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); 1253 MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); 1254 MODULE_LICENSE("GPL"); 1255 MODULE_ALIAS("platform:extcon-max77693"); 1256