1 // SPDX-License-Identifier: GPL-2.0+ 2 // 3 // extcon-max77693.c - MAX77693 extcon driver to support MAX77693 MUIC 4 // 5 // Copyright (C) 2012 Samsung Electrnoics 6 // Chanwoo Choi <cw00.choi@samsung.com> 7 8 #include <linux/devm-helpers.h> 9 #include <linux/kernel.h> 10 #include <linux/module.h> 11 #include <linux/i2c.h> 12 #include <linux/slab.h> 13 #include <linux/input.h> 14 #include <linux/interrupt.h> 15 #include <linux/err.h> 16 #include <linux/platform_device.h> 17 #include <linux/mfd/max77693.h> 18 #include <linux/mfd/max77693-common.h> 19 #include <linux/mfd/max77693-private.h> 20 #include <linux/extcon-provider.h> 21 #include <linux/regmap.h> 22 #include <linux/irqdomain.h> 23 24 #define DEV_NAME "max77693-muic" 25 #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ 26 27 /* 28 * Default value of MAX77693 register to bring up MUIC device. 29 * If user don't set some initial value for MUIC device through platform data, 30 * extcon-max77693 driver use 'default_init_data' to bring up base operation 31 * of MAX77693 MUIC device. 32 */ 33 static struct max77693_reg_data default_init_data[] = { 34 { 35 /* STATUS2 - [3]ChgDetRun */ 36 .addr = MAX77693_MUIC_REG_STATUS2, 37 .data = MAX77693_STATUS2_CHGDETRUN_MASK, 38 }, { 39 /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ 40 .addr = MAX77693_MUIC_REG_INTMASK1, 41 .data = INTMASK1_ADC1K_MASK 42 | INTMASK1_ADC_MASK, 43 }, { 44 /* INTMASK2 - Unmask [0]ChgTypM */ 45 .addr = MAX77693_MUIC_REG_INTMASK2, 46 .data = INTMASK2_CHGTYP_MASK, 47 }, { 48 /* INTMASK3 - Mask all of interrupts */ 49 .addr = MAX77693_MUIC_REG_INTMASK3, 50 .data = 0x0, 51 }, { 52 /* CDETCTRL2 */ 53 .addr = MAX77693_MUIC_REG_CDETCTRL2, 54 .data = CDETCTRL2_VIDRMEN_MASK 55 | CDETCTRL2_DXOVPEN_MASK, 56 }, 57 }; 58 59 enum max77693_muic_adc_debounce_time { 60 ADC_DEBOUNCE_TIME_5MS = 0, 61 ADC_DEBOUNCE_TIME_10MS, 62 ADC_DEBOUNCE_TIME_25MS, 63 ADC_DEBOUNCE_TIME_38_62MS, 64 }; 65 66 struct max77693_muic_info { 67 struct device *dev; 68 struct max77693_dev *max77693; 69 struct extcon_dev *edev; 70 int prev_cable_type; 71 int prev_cable_type_gnd; 72 int prev_chg_type; 73 int prev_button_type; 74 u8 status[2]; 75 76 int irq; 77 struct work_struct irq_work; 78 struct mutex mutex; 79 80 /* 81 * Use delayed workqueue to detect cable state and then 82 * notify cable state to notifiee/platform through uevent. 83 * After completing the booting of platform, the extcon provider 84 * driver should notify cable state to upper layer. 85 */ 86 struct delayed_work wq_detcable; 87 88 /* Button of dock device */ 89 struct input_dev *dock; 90 91 /* 92 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB 93 * h/w path of COMP2/COMN1 on CONTROL1 register. 94 */ 95 int path_usb; 96 int path_uart; 97 }; 98 99 enum max77693_muic_cable_group { 100 MAX77693_CABLE_GROUP_ADC = 0, 101 MAX77693_CABLE_GROUP_ADC_GND, 102 MAX77693_CABLE_GROUP_CHG, 103 MAX77693_CABLE_GROUP_VBVOLT, 104 }; 105 106 enum max77693_muic_charger_type { 107 MAX77693_CHARGER_TYPE_NONE = 0, 108 MAX77693_CHARGER_TYPE_USB, 109 MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT, 110 MAX77693_CHARGER_TYPE_DEDICATED_CHG, 111 MAX77693_CHARGER_TYPE_APPLE_500MA, 112 MAX77693_CHARGER_TYPE_APPLE_1A_2A, 113 MAX77693_CHARGER_TYPE_DEAD_BATTERY = 7, 114 }; 115 116 /** 117 * struct max77693_muic_irq 118 * @irq: the index of irq list of MUIC device. 119 * @name: the name of irq. 120 * @virq: the virtual irq to use irq domain 121 */ 122 struct max77693_muic_irq { 123 unsigned int irq; 124 const char *name; 125 unsigned int virq; 126 }; 127 128 static struct max77693_muic_irq muic_irqs[] = { 129 { MAX77693_MUIC_IRQ_INT1_ADC, "muic-ADC" }, 130 { MAX77693_MUIC_IRQ_INT1_ADC_LOW, "muic-ADCLOW" }, 131 { MAX77693_MUIC_IRQ_INT1_ADC_ERR, "muic-ADCError" }, 132 { MAX77693_MUIC_IRQ_INT1_ADC1K, "muic-ADC1K" }, 133 { MAX77693_MUIC_IRQ_INT2_CHGTYP, "muic-CHGTYP" }, 134 { MAX77693_MUIC_IRQ_INT2_CHGDETREUN, "muic-CHGDETREUN" }, 135 { MAX77693_MUIC_IRQ_INT2_DCDTMR, "muic-DCDTMR" }, 136 { MAX77693_MUIC_IRQ_INT2_DXOVP, "muic-DXOVP" }, 137 { MAX77693_MUIC_IRQ_INT2_VBVOLT, "muic-VBVOLT" }, 138 { MAX77693_MUIC_IRQ_INT2_VIDRM, "muic-VIDRM" }, 139 { MAX77693_MUIC_IRQ_INT3_EOC, "muic-EOC" }, 140 { MAX77693_MUIC_IRQ_INT3_CGMBC, "muic-CGMBC" }, 141 { MAX77693_MUIC_IRQ_INT3_OVP, "muic-OVP" }, 142 { MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, "muic-MBCCHG_ERR" }, 143 { MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, "muic-CHG_ENABLED" }, 144 { MAX77693_MUIC_IRQ_INT3_BAT_DET, "muic-BAT_DET" }, 145 }; 146 147 /* Define supported accessory type */ 148 enum max77693_muic_acc_type { 149 MAX77693_MUIC_ADC_GROUND = 0x0, 150 MAX77693_MUIC_ADC_SEND_END_BUTTON, 151 MAX77693_MUIC_ADC_REMOTE_S1_BUTTON, 152 MAX77693_MUIC_ADC_REMOTE_S2_BUTTON, 153 MAX77693_MUIC_ADC_REMOTE_S3_BUTTON, 154 MAX77693_MUIC_ADC_REMOTE_S4_BUTTON, 155 MAX77693_MUIC_ADC_REMOTE_S5_BUTTON, 156 MAX77693_MUIC_ADC_REMOTE_S6_BUTTON, 157 MAX77693_MUIC_ADC_REMOTE_S7_BUTTON, 158 MAX77693_MUIC_ADC_REMOTE_S8_BUTTON, 159 MAX77693_MUIC_ADC_REMOTE_S9_BUTTON, 160 MAX77693_MUIC_ADC_REMOTE_S10_BUTTON, 161 MAX77693_MUIC_ADC_REMOTE_S11_BUTTON, 162 MAX77693_MUIC_ADC_REMOTE_S12_BUTTON, 163 MAX77693_MUIC_ADC_RESERVED_ACC_1, 164 MAX77693_MUIC_ADC_RESERVED_ACC_2, 165 MAX77693_MUIC_ADC_RESERVED_ACC_3, 166 MAX77693_MUIC_ADC_RESERVED_ACC_4, 167 MAX77693_MUIC_ADC_RESERVED_ACC_5, 168 MAX77693_MUIC_ADC_CEA936_AUDIO, 169 MAX77693_MUIC_ADC_PHONE_POWERED_DEV, 170 MAX77693_MUIC_ADC_TTY_CONVERTER, 171 MAX77693_MUIC_ADC_UART_CABLE, 172 MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG, 173 MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF, 174 MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON, 175 MAX77693_MUIC_ADC_AV_CABLE_NOLOAD, 176 MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG, 177 MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF, 178 MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON, 179 MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE, 180 MAX77693_MUIC_ADC_OPEN, 181 182 /* 183 * The below accessories have same ADC value so ADCLow and 184 * ADC1K bit is used to separate specific accessory. 185 */ 186 /* ADC|VBVolot|ADCLow|ADC1K| */ 187 MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */ 188 MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */ 189 MAX77693_MUIC_GND_AV_CABLE_LOAD = 0x102,/* 0x0| 0| 1| 0| */ 190 MAX77693_MUIC_GND_MHL = 0x103, /* 0x0| 0| 1| 1| */ 191 MAX77693_MUIC_GND_MHL_VB = 0x107, /* 0x0| 1| 1| 1| */ 192 }; 193 194 /* 195 * MAX77693 MUIC device support below list of accessories(external connector) 196 */ 197 static const unsigned int max77693_extcon_cable[] = { 198 EXTCON_USB, 199 EXTCON_USB_HOST, 200 EXTCON_CHG_USB_SDP, 201 EXTCON_CHG_USB_DCP, 202 EXTCON_CHG_USB_FAST, 203 EXTCON_CHG_USB_SLOW, 204 EXTCON_CHG_USB_CDP, 205 EXTCON_DISP_MHL, 206 EXTCON_JIG, 207 EXTCON_DOCK, 208 EXTCON_NONE, 209 }; 210 211 /* 212 * max77693_muic_set_debounce_time - Set the debounce time of ADC 213 * @info: the instance including private data of max77693 MUIC 214 * @time: the debounce time of ADC 215 */ 216 static int max77693_muic_set_debounce_time(struct max77693_muic_info *info, 217 enum max77693_muic_adc_debounce_time time) 218 { 219 int ret; 220 221 switch (time) { 222 case ADC_DEBOUNCE_TIME_5MS: 223 case ADC_DEBOUNCE_TIME_10MS: 224 case ADC_DEBOUNCE_TIME_25MS: 225 case ADC_DEBOUNCE_TIME_38_62MS: 226 /* 227 * Don't touch BTLDset, JIGset when you want to change adc 228 * debounce time. If it writes other than 0 to BTLDset, JIGset 229 * muic device will be reset and loose current state. 230 */ 231 ret = regmap_write(info->max77693->regmap_muic, 232 MAX77693_MUIC_REG_CTRL3, 233 time << MAX77693_CONTROL3_ADCDBSET_SHIFT); 234 if (ret) { 235 dev_err(info->dev, "failed to set ADC debounce time\n"); 236 return ret; 237 } 238 break; 239 default: 240 dev_err(info->dev, "invalid ADC debounce time\n"); 241 return -EINVAL; 242 } 243 244 return 0; 245 }; 246 247 /* 248 * max77693_muic_set_path - Set hardware line according to attached cable 249 * @info: the instance including private data of max77693 MUIC 250 * @value: the path according to attached cable 251 * @attached: the state of cable (true:attached, false:detached) 252 * 253 * The max77693 MUIC device share outside H/W line among a varity of cables 254 * so, this function set internal path of H/W line according to the type of 255 * attached cable. 256 */ 257 static int max77693_muic_set_path(struct max77693_muic_info *info, 258 u8 val, bool attached) 259 { 260 int ret; 261 unsigned int ctrl1, ctrl2 = 0; 262 263 if (attached) 264 ctrl1 = val; 265 else 266 ctrl1 = MAX77693_CONTROL1_SW_OPEN; 267 268 ret = regmap_update_bits(info->max77693->regmap_muic, 269 MAX77693_MUIC_REG_CTRL1, COMP_SW_MASK, ctrl1); 270 if (ret < 0) { 271 dev_err(info->dev, "failed to update MUIC register\n"); 272 return ret; 273 } 274 275 if (attached) 276 ctrl2 |= MAX77693_CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */ 277 else 278 ctrl2 |= MAX77693_CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */ 279 280 ret = regmap_update_bits(info->max77693->regmap_muic, 281 MAX77693_MUIC_REG_CTRL2, 282 MAX77693_CONTROL2_LOWPWR_MASK | MAX77693_CONTROL2_CPEN_MASK, 283 ctrl2); 284 if (ret < 0) { 285 dev_err(info->dev, "failed to update MUIC register\n"); 286 return ret; 287 } 288 289 dev_info(info->dev, 290 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n", 291 ctrl1, ctrl2, attached ? "attached" : "detached"); 292 293 return 0; 294 } 295 296 /* 297 * max77693_muic_get_cable_type - Return cable type and check cable state 298 * @info: the instance including private data of max77693 MUIC 299 * @group: the path according to attached cable 300 * @attached: store cable state and return 301 * 302 * This function check the cable state either attached or detached, 303 * and then divide precise type of cable according to cable group. 304 * - MAX77693_CABLE_GROUP_ADC 305 * - MAX77693_CABLE_GROUP_ADC_GND 306 * - MAX77693_CABLE_GROUP_CHG 307 * - MAX77693_CABLE_GROUP_VBVOLT 308 */ 309 static int max77693_muic_get_cable_type(struct max77693_muic_info *info, 310 enum max77693_muic_cable_group group, bool *attached) 311 { 312 int cable_type = 0; 313 int adc; 314 int adc1k; 315 int adclow; 316 int vbvolt; 317 int chg_type; 318 319 switch (group) { 320 case MAX77693_CABLE_GROUP_ADC: 321 /* 322 * Read ADC value to check cable type and decide cable state 323 * according to cable type 324 */ 325 adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; 326 adc >>= MAX77693_STATUS1_ADC_SHIFT; 327 328 /* 329 * Check current cable state/cable type and store cable type 330 * (info->prev_cable_type) for handling cable when cable is 331 * detached. 332 */ 333 if (adc == MAX77693_MUIC_ADC_OPEN) { 334 *attached = false; 335 336 cable_type = info->prev_cable_type; 337 info->prev_cable_type = MAX77693_MUIC_ADC_OPEN; 338 } else { 339 *attached = true; 340 341 cable_type = info->prev_cable_type = adc; 342 } 343 break; 344 case MAX77693_CABLE_GROUP_ADC_GND: 345 /* 346 * Read ADC value to check cable type and decide cable state 347 * according to cable type 348 */ 349 adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; 350 adc >>= MAX77693_STATUS1_ADC_SHIFT; 351 352 /* 353 * Check current cable state/cable type and store cable type 354 * (info->prev_cable_type/_gnd) for handling cable when cable 355 * is detached. 356 */ 357 if (adc == MAX77693_MUIC_ADC_OPEN) { 358 *attached = false; 359 360 cable_type = info->prev_cable_type_gnd; 361 info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN; 362 } else { 363 *attached = true; 364 365 adclow = info->status[0] & MAX77693_STATUS1_ADCLOW_MASK; 366 adclow >>= MAX77693_STATUS1_ADCLOW_SHIFT; 367 adc1k = info->status[0] & MAX77693_STATUS1_ADC1K_MASK; 368 adc1k >>= MAX77693_STATUS1_ADC1K_SHIFT; 369 370 vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK; 371 vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT; 372 373 /** 374 * [0x1|VBVolt|ADCLow|ADC1K] 375 * [0x1| 0| 0| 0] USB_HOST 376 * [0x1| 1| 0| 0] USB_HSOT_VB 377 * [0x1| 0| 1| 0] Audio Video cable with load 378 * [0x1| 0| 1| 1] MHL without charging cable 379 * [0x1| 1| 1| 1] MHL with charging cable 380 */ 381 cable_type = ((0x1 << 8) 382 | (vbvolt << 2) 383 | (adclow << 1) 384 | adc1k); 385 386 info->prev_cable_type = adc; 387 info->prev_cable_type_gnd = cable_type; 388 } 389 390 break; 391 case MAX77693_CABLE_GROUP_CHG: 392 /* 393 * Read charger type to check cable type and decide cable state 394 * according to type of charger cable. 395 */ 396 chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK; 397 chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT; 398 399 if (chg_type == MAX77693_CHARGER_TYPE_NONE) { 400 *attached = false; 401 402 cable_type = info->prev_chg_type; 403 info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE; 404 } else { 405 *attached = true; 406 407 /* 408 * Check current cable state/cable type and store cable 409 * type(info->prev_chg_type) for handling cable when 410 * charger cable is detached. 411 */ 412 cable_type = info->prev_chg_type = chg_type; 413 } 414 415 break; 416 case MAX77693_CABLE_GROUP_VBVOLT: 417 /* 418 * Read ADC value to check cable type and decide cable state 419 * according to cable type 420 */ 421 adc = info->status[0] & MAX77693_STATUS1_ADC_MASK; 422 adc >>= MAX77693_STATUS1_ADC_SHIFT; 423 chg_type = info->status[1] & MAX77693_STATUS2_CHGTYP_MASK; 424 chg_type >>= MAX77693_STATUS2_CHGTYP_SHIFT; 425 426 if (adc == MAX77693_MUIC_ADC_OPEN 427 && chg_type == MAX77693_CHARGER_TYPE_NONE) 428 *attached = false; 429 else 430 *attached = true; 431 432 /* 433 * Read vbvolt field, if vbvolt is 1, 434 * this cable is used for charging. 435 */ 436 vbvolt = info->status[1] & MAX77693_STATUS2_VBVOLT_MASK; 437 vbvolt >>= MAX77693_STATUS2_VBVOLT_SHIFT; 438 439 cable_type = vbvolt; 440 break; 441 default: 442 dev_err(info->dev, "Unknown cable group (%d)\n", group); 443 cable_type = -EINVAL; 444 break; 445 } 446 447 return cable_type; 448 } 449 450 static int max77693_muic_dock_handler(struct max77693_muic_info *info, 451 int cable_type, bool attached) 452 { 453 int ret = 0; 454 int vbvolt; 455 bool cable_attached; 456 unsigned int dock_id; 457 458 dev_info(info->dev, 459 "external connector is %s (adc:0x%02x)\n", 460 attached ? "attached" : "detached", cable_type); 461 462 switch (cable_type) { 463 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 464 /* 465 * Check power cable whether attached or detached state. 466 * The Dock-Smart device need surely external power supply. 467 * If power cable(USB/TA) isn't connected to Dock device, 468 * user can't use Dock-Smart for desktop mode. 469 */ 470 vbvolt = max77693_muic_get_cable_type(info, 471 MAX77693_CABLE_GROUP_VBVOLT, &cable_attached); 472 if (attached && !vbvolt) { 473 dev_warn(info->dev, 474 "Cannot detect external power supply\n"); 475 return 0; 476 } 477 478 /* 479 * Notify Dock/MHL state. 480 * - Dock device include three type of cable which 481 * are HDMI, USB for mouse/keyboard and micro-usb port 482 * for USB/TA cable. Dock device need always exteranl 483 * power supply(USB/TA cable through micro-usb cable). Dock 484 * device support screen output of target to separate 485 * monitor and mouse/keyboard for desktop mode. 486 * 487 * Features of 'USB/TA cable with Dock device' 488 * - Support MHL 489 * - Support external output feature of audio 490 * - Support charging through micro-usb port without data 491 * connection if TA cable is connected to target. 492 * - Support charging and data connection through micro-usb port 493 * if USB cable is connected between target and host 494 * device. 495 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) 496 */ 497 ret = max77693_muic_set_path(info, info->path_usb, attached); 498 if (ret < 0) 499 return ret; 500 501 extcon_set_state_sync(info->edev, EXTCON_DOCK, attached); 502 extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached); 503 goto out; 504 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ 505 dock_id = EXTCON_DOCK; 506 break; 507 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 508 dock_id = EXTCON_DOCK; 509 if (!attached) { 510 extcon_set_state_sync(info->edev, EXTCON_USB, false); 511 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, 512 false); 513 } 514 break; 515 default: 516 dev_err(info->dev, "failed to detect %s dock device\n", 517 attached ? "attached" : "detached"); 518 return -EINVAL; 519 } 520 521 /* Dock-Car/Desk/Audio, PATH:AUDIO */ 522 ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO, 523 attached); 524 if (ret < 0) 525 return ret; 526 extcon_set_state_sync(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, MAX77693_CONTROL1_SW_USB, 589 attached); 590 if (ret < 0) 591 return ret; 592 extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached); 593 break; 594 case MAX77693_MUIC_GND_AV_CABLE_LOAD: 595 /* Audio Video Cable with load, PATH:AUDIO */ 596 ret = max77693_muic_set_path(info, MAX77693_CONTROL1_SW_AUDIO, 597 attached); 598 if (ret < 0) 599 return ret; 600 extcon_set_state_sync(info->edev, EXTCON_USB, attached); 601 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, 602 attached); 603 break; 604 case MAX77693_MUIC_GND_MHL: 605 case MAX77693_MUIC_GND_MHL_VB: 606 /* MHL or MHL with USB/TA cable */ 607 extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached); 608 break; 609 default: 610 dev_err(info->dev, "failed to detect %s cable of gnd type\n", 611 attached ? "attached" : "detached"); 612 return -EINVAL; 613 } 614 615 return 0; 616 } 617 618 static int max77693_muic_jig_handler(struct max77693_muic_info *info, 619 int cable_type, bool attached) 620 { 621 int ret = 0; 622 u8 path = MAX77693_CONTROL1_SW_OPEN; 623 624 dev_info(info->dev, 625 "external connector is %s (adc:0x%02x)\n", 626 attached ? "attached" : "detached", cable_type); 627 628 switch (cable_type) { 629 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: /* ADC_JIG_USB_OFF */ 630 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: /* ADC_JIG_USB_ON */ 631 /* PATH:AP_USB */ 632 path = MAX77693_CONTROL1_SW_USB; 633 break; 634 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: /* ADC_JIG_UART_OFF */ 635 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* ADC_JIG_UART_ON */ 636 /* PATH:AP_UART */ 637 path = MAX77693_CONTROL1_SW_UART; 638 break; 639 default: 640 dev_err(info->dev, "failed to detect %s jig cable\n", 641 attached ? "attached" : "detached"); 642 return -EINVAL; 643 } 644 645 ret = max77693_muic_set_path(info, path, attached); 646 if (ret < 0) 647 return ret; 648 649 extcon_set_state_sync(info->edev, EXTCON_JIG, attached); 650 651 return 0; 652 } 653 654 static int max77693_muic_adc_handler(struct max77693_muic_info *info) 655 { 656 int cable_type; 657 int button_type; 658 bool attached; 659 int ret = 0; 660 661 /* Check accessory state which is either detached or attached */ 662 cable_type = max77693_muic_get_cable_type(info, 663 MAX77693_CABLE_GROUP_ADC, &attached); 664 665 dev_info(info->dev, 666 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n", 667 attached ? "attached" : "detached", cable_type, 668 info->prev_cable_type); 669 670 switch (cable_type) { 671 case MAX77693_MUIC_ADC_GROUND: 672 /* USB_HOST/MHL/Audio */ 673 max77693_muic_adc_ground_handler(info); 674 break; 675 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF: 676 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON: 677 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF: 678 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: 679 /* JIG */ 680 ret = max77693_muic_jig_handler(info, cable_type, attached); 681 if (ret < 0) 682 return ret; 683 break; 684 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 685 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */ 686 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 687 /* 688 * DOCK device 689 * 690 * The MAX77693 MUIC device can detect total 34 cable type 691 * except of charger cable and MUIC device didn't define 692 * specfic role of cable in the range of from 0x01 to 0x12 693 * of ADC value. So, can use/define cable with no role according 694 * to schema of hardware board. 695 */ 696 ret = max77693_muic_dock_handler(info, cable_type, attached); 697 if (ret < 0) 698 return ret; 699 break; 700 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */ 701 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */ 702 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */ 703 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */ 704 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */ 705 /* 706 * Button of DOCK device 707 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button 708 * 709 * The MAX77693 MUIC device can detect total 34 cable type 710 * except of charger cable and MUIC device didn't define 711 * specfic role of cable in the range of from 0x01 to 0x12 712 * of ADC value. So, can use/define cable with no role according 713 * to schema of hardware board. 714 */ 715 if (attached) 716 button_type = info->prev_button_type = cable_type; 717 else 718 button_type = info->prev_button_type; 719 720 ret = max77693_muic_dock_button_handler(info, button_type, 721 attached); 722 if (ret < 0) 723 return ret; 724 break; 725 case MAX77693_MUIC_ADC_SEND_END_BUTTON: 726 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON: 727 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON: 728 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON: 729 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON: 730 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON: 731 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON: 732 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON: 733 case MAX77693_MUIC_ADC_RESERVED_ACC_1: 734 case MAX77693_MUIC_ADC_RESERVED_ACC_2: 735 case MAX77693_MUIC_ADC_RESERVED_ACC_4: 736 case MAX77693_MUIC_ADC_RESERVED_ACC_5: 737 case MAX77693_MUIC_ADC_CEA936_AUDIO: 738 case MAX77693_MUIC_ADC_PHONE_POWERED_DEV: 739 case MAX77693_MUIC_ADC_TTY_CONVERTER: 740 case MAX77693_MUIC_ADC_UART_CABLE: 741 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG: 742 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG: 743 /* 744 * This accessory isn't used in general case if it is specially 745 * needed to detect additional accessory, should implement 746 * proper operation when this accessory is attached/detached. 747 */ 748 dev_info(info->dev, 749 "accessory is %s but it isn't used (adc:0x%x)\n", 750 attached ? "attached" : "detached", cable_type); 751 return -EAGAIN; 752 default: 753 dev_err(info->dev, 754 "failed to detect %s accessory (adc:0x%x)\n", 755 attached ? "attached" : "detached", cable_type); 756 return -EINVAL; 757 } 758 759 return 0; 760 } 761 762 static int max77693_muic_chg_handler(struct max77693_muic_info *info) 763 { 764 int chg_type; 765 int cable_type_gnd; 766 int cable_type; 767 bool attached; 768 bool cable_attached; 769 int ret = 0; 770 771 chg_type = max77693_muic_get_cable_type(info, 772 MAX77693_CABLE_GROUP_CHG, &attached); 773 774 dev_info(info->dev, 775 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n", 776 attached ? "attached" : "detached", 777 chg_type, info->prev_chg_type); 778 779 switch (chg_type) { 780 case MAX77693_CHARGER_TYPE_USB: 781 case MAX77693_CHARGER_TYPE_DEDICATED_CHG: 782 case MAX77693_CHARGER_TYPE_NONE: 783 /* Check MAX77693_CABLE_GROUP_ADC_GND type */ 784 cable_type_gnd = max77693_muic_get_cable_type(info, 785 MAX77693_CABLE_GROUP_ADC_GND, 786 &cable_attached); 787 switch (cable_type_gnd) { 788 case MAX77693_MUIC_GND_MHL: 789 case MAX77693_MUIC_GND_MHL_VB: 790 /* 791 * MHL cable with USB/TA cable 792 * - MHL cable include two port(HDMI line and separate 793 * micro-usb port. When the target connect MHL cable, 794 * extcon driver check whether USB/TA cable is 795 * connected. If USB/TA cable is connected, extcon 796 * driver notify state to notifiee for charging battery. 797 * 798 * Features of 'USB/TA with MHL cable' 799 * - Support MHL 800 * - Support charging through micro-usb port without 801 * data connection 802 */ 803 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, 804 attached); 805 extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, 806 cable_attached); 807 break; 808 } 809 810 /* Check MAX77693_CABLE_GROUP_ADC type */ 811 cable_type = max77693_muic_get_cable_type(info, 812 MAX77693_CABLE_GROUP_ADC, 813 &cable_attached); 814 switch (cable_type) { 815 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */ 816 /* 817 * Dock-Audio device with USB/TA cable 818 * - Dock device include two port(Dock-Audio and micro- 819 * usb port). When the target connect Dock-Audio device, 820 * extcon driver check whether USB/TA cable is connected 821 * or not. If USB/TA cable is connected, extcon driver 822 * notify state to notifiee for charging battery. 823 * 824 * Features of 'USB/TA cable with Dock-Audio device' 825 * - Support external output feature of audio. 826 * - Support charging through micro-usb port without 827 * data connection. 828 */ 829 extcon_set_state_sync(info->edev, EXTCON_USB, 830 attached); 831 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, 832 attached); 833 834 if (!cable_attached) 835 extcon_set_state_sync(info->edev, EXTCON_DOCK, 836 cable_attached); 837 break; 838 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */ 839 /* 840 * Dock-Smart device with USB/TA cable 841 * - Dock-Desk device include three type of cable which 842 * are HDMI, USB for mouse/keyboard and micro-usb port 843 * for USB/TA cable. Dock-Smart device need always 844 * exteranl power supply(USB/TA cable through micro-usb 845 * cable). Dock-Smart device support screen output of 846 * target to separate monitor and mouse/keyboard for 847 * desktop mode. 848 * 849 * Features of 'USB/TA cable with Dock-Smart device' 850 * - Support MHL 851 * - Support external output feature of audio 852 * - Support charging through micro-usb port without 853 * data connection if TA cable is connected to target. 854 * - Support charging and data connection through micro- 855 * usb port if USB cable is connected between target 856 * and host device 857 * - Support OTG(On-The-Go) device (Ex: Mouse/Keyboard) 858 */ 859 ret = max77693_muic_set_path(info, info->path_usb, 860 attached); 861 if (ret < 0) 862 return ret; 863 864 extcon_set_state_sync(info->edev, EXTCON_DOCK, 865 attached); 866 extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, 867 attached); 868 break; 869 } 870 871 /* Check MAX77693_CABLE_GROUP_CHG type */ 872 switch (chg_type) { 873 case MAX77693_CHARGER_TYPE_NONE: 874 /* 875 * When MHL(with USB/TA cable) or Dock-Audio with USB/TA 876 * cable is attached, muic device happen below two irq. 877 * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting 878 * MHL/Dock-Audio. 879 * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting 880 * USB/TA cable connected to MHL or Dock-Audio. 881 * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC 882 * irq than MAX77693_MUIC_IRQ_INT2_CHGTYP irq. 883 * 884 * If user attach MHL (with USB/TA cable and immediately 885 * detach MHL with USB/TA cable before MAX77693_MUIC_IRQ 886 * _INT2_CHGTYP irq is happened, USB/TA cable remain 887 * connected state to target. But USB/TA cable isn't 888 * connected to target. The user be face with unusual 889 * action. So, driver should check this situation in 890 * spite of, that previous charger type is N/A. 891 */ 892 break; 893 case MAX77693_CHARGER_TYPE_USB: 894 /* Only USB cable, PATH:AP_USB */ 895 ret = max77693_muic_set_path(info, info->path_usb, 896 attached); 897 if (ret < 0) 898 return ret; 899 900 extcon_set_state_sync(info->edev, EXTCON_USB, 901 attached); 902 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP, 903 attached); 904 break; 905 case MAX77693_CHARGER_TYPE_DEDICATED_CHG: 906 /* Only TA cable */ 907 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, 908 attached); 909 break; 910 } 911 break; 912 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT: 913 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP, 914 attached); 915 break; 916 case MAX77693_CHARGER_TYPE_APPLE_500MA: 917 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW, 918 attached); 919 break; 920 case MAX77693_CHARGER_TYPE_APPLE_1A_2A: 921 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST, 922 attached); 923 break; 924 case MAX77693_CHARGER_TYPE_DEAD_BATTERY: 925 break; 926 default: 927 dev_err(info->dev, 928 "failed to detect %s accessory (chg_type:0x%x)\n", 929 attached ? "attached" : "detached", chg_type); 930 return -EINVAL; 931 } 932 933 return 0; 934 } 935 936 static void max77693_muic_irq_work(struct work_struct *work) 937 { 938 struct max77693_muic_info *info = container_of(work, 939 struct max77693_muic_info, irq_work); 940 int irq_type = -1; 941 int i, ret = 0; 942 943 if (!info->edev) 944 return; 945 946 mutex_lock(&info->mutex); 947 948 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) 949 if (info->irq == muic_irqs[i].virq) 950 irq_type = muic_irqs[i].irq; 951 952 ret = regmap_bulk_read(info->max77693->regmap_muic, 953 MAX77693_MUIC_REG_STATUS1, info->status, 2); 954 if (ret) { 955 dev_err(info->dev, "failed to read MUIC register\n"); 956 mutex_unlock(&info->mutex); 957 return; 958 } 959 960 switch (irq_type) { 961 case MAX77693_MUIC_IRQ_INT1_ADC: 962 case MAX77693_MUIC_IRQ_INT1_ADC_LOW: 963 case MAX77693_MUIC_IRQ_INT1_ADC_ERR: 964 case MAX77693_MUIC_IRQ_INT1_ADC1K: 965 /* 966 * Handle all of accessory except for 967 * type of charger accessory. 968 */ 969 ret = max77693_muic_adc_handler(info); 970 break; 971 case MAX77693_MUIC_IRQ_INT2_CHGTYP: 972 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN: 973 case MAX77693_MUIC_IRQ_INT2_DCDTMR: 974 case MAX77693_MUIC_IRQ_INT2_DXOVP: 975 case MAX77693_MUIC_IRQ_INT2_VBVOLT: 976 case MAX77693_MUIC_IRQ_INT2_VIDRM: 977 /* Handle charger accessory */ 978 ret = max77693_muic_chg_handler(info); 979 break; 980 case MAX77693_MUIC_IRQ_INT3_EOC: 981 case MAX77693_MUIC_IRQ_INT3_CGMBC: 982 case MAX77693_MUIC_IRQ_INT3_OVP: 983 case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR: 984 case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED: 985 case MAX77693_MUIC_IRQ_INT3_BAT_DET: 986 break; 987 default: 988 dev_err(info->dev, "muic interrupt: irq %d occurred\n", 989 irq_type); 990 mutex_unlock(&info->mutex); 991 return; 992 } 993 994 if (ret < 0) 995 dev_err(info->dev, "failed to handle MUIC interrupt\n"); 996 997 mutex_unlock(&info->mutex); 998 } 999 1000 static irqreturn_t max77693_muic_irq_handler(int irq, void *data) 1001 { 1002 struct max77693_muic_info *info = data; 1003 1004 info->irq = irq; 1005 schedule_work(&info->irq_work); 1006 1007 return IRQ_HANDLED; 1008 } 1009 1010 static const struct regmap_config max77693_muic_regmap_config = { 1011 .reg_bits = 8, 1012 .val_bits = 8, 1013 }; 1014 1015 static int max77693_muic_detect_accessory(struct max77693_muic_info *info) 1016 { 1017 int ret = 0; 1018 int adc; 1019 int chg_type; 1020 bool attached; 1021 1022 mutex_lock(&info->mutex); 1023 1024 /* Read STATUSx register to detect accessory */ 1025 ret = regmap_bulk_read(info->max77693->regmap_muic, 1026 MAX77693_MUIC_REG_STATUS1, info->status, 2); 1027 if (ret) { 1028 dev_err(info->dev, "failed to read MUIC register\n"); 1029 mutex_unlock(&info->mutex); 1030 return ret; 1031 } 1032 1033 adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC, 1034 &attached); 1035 if (attached && adc != MAX77693_MUIC_ADC_OPEN) { 1036 ret = max77693_muic_adc_handler(info); 1037 if (ret < 0) { 1038 dev_err(info->dev, "Cannot detect accessory\n"); 1039 mutex_unlock(&info->mutex); 1040 return ret; 1041 } 1042 } 1043 1044 chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG, 1045 &attached); 1046 if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) { 1047 ret = max77693_muic_chg_handler(info); 1048 if (ret < 0) { 1049 dev_err(info->dev, "Cannot detect charger accessory\n"); 1050 mutex_unlock(&info->mutex); 1051 return ret; 1052 } 1053 } 1054 1055 mutex_unlock(&info->mutex); 1056 1057 return 0; 1058 } 1059 1060 static void max77693_muic_detect_cable_wq(struct work_struct *work) 1061 { 1062 struct max77693_muic_info *info = container_of(to_delayed_work(work), 1063 struct max77693_muic_info, wq_detcable); 1064 1065 max77693_muic_detect_accessory(info); 1066 } 1067 1068 static int max77693_muic_probe(struct platform_device *pdev) 1069 { 1070 struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); 1071 struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); 1072 struct max77693_muic_info *info; 1073 struct max77693_reg_data *init_data; 1074 int num_init_data; 1075 int delay_jiffies; 1076 int cable_type; 1077 bool attached; 1078 int ret; 1079 int i; 1080 unsigned int id; 1081 1082 info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info), 1083 GFP_KERNEL); 1084 if (!info) 1085 return -ENOMEM; 1086 1087 info->dev = &pdev->dev; 1088 info->max77693 = max77693; 1089 if (info->max77693->regmap_muic) { 1090 dev_dbg(&pdev->dev, "allocate register map\n"); 1091 } else { 1092 info->max77693->regmap_muic = devm_regmap_init_i2c( 1093 info->max77693->i2c_muic, 1094 &max77693_muic_regmap_config); 1095 if (IS_ERR(info->max77693->regmap_muic)) { 1096 ret = PTR_ERR(info->max77693->regmap_muic); 1097 dev_err(max77693->dev, 1098 "failed to allocate register map: %d\n", ret); 1099 return ret; 1100 } 1101 } 1102 1103 /* Register input device for button of dock device */ 1104 info->dock = devm_input_allocate_device(&pdev->dev); 1105 if (!info->dock) { 1106 dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__); 1107 return -ENOMEM; 1108 } 1109 info->dock->name = "max77693-muic/dock"; 1110 info->dock->phys = "max77693-muic/extcon"; 1111 info->dock->dev.parent = &pdev->dev; 1112 1113 __set_bit(EV_REP, info->dock->evbit); 1114 1115 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP); 1116 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN); 1117 input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE); 1118 input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG); 1119 input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG); 1120 1121 ret = input_register_device(info->dock); 1122 if (ret < 0) { 1123 dev_err(&pdev->dev, "Cannot register input device error(%d)\n", 1124 ret); 1125 return ret; 1126 } 1127 1128 platform_set_drvdata(pdev, info); 1129 mutex_init(&info->mutex); 1130 1131 ret = devm_work_autocancel(&pdev->dev, &info->irq_work, 1132 max77693_muic_irq_work); 1133 if (ret) 1134 return ret; 1135 1136 /* Support irq domain for MAX77693 MUIC device */ 1137 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) { 1138 struct max77693_muic_irq *muic_irq = &muic_irqs[i]; 1139 int virq; 1140 1141 virq = regmap_irq_get_virq(max77693->irq_data_muic, 1142 muic_irq->irq); 1143 if (virq <= 0) 1144 return -EINVAL; 1145 muic_irq->virq = virq; 1146 1147 ret = devm_request_threaded_irq(&pdev->dev, virq, NULL, 1148 max77693_muic_irq_handler, 1149 IRQF_NO_SUSPEND, 1150 muic_irq->name, info); 1151 if (ret) { 1152 dev_err(&pdev->dev, 1153 "failed: irq request (IRQ: %d, error :%d)\n", 1154 muic_irq->irq, ret); 1155 return ret; 1156 } 1157 } 1158 1159 /* Initialize extcon device */ 1160 info->edev = devm_extcon_dev_allocate(&pdev->dev, 1161 max77693_extcon_cable); 1162 if (IS_ERR(info->edev)) { 1163 dev_err(&pdev->dev, "failed to allocate memory for extcon\n"); 1164 return PTR_ERR(info->edev); 1165 } 1166 1167 ret = devm_extcon_dev_register(&pdev->dev, info->edev); 1168 if (ret) { 1169 dev_err(&pdev->dev, "failed to register extcon device\n"); 1170 return ret; 1171 } 1172 1173 /* Initialize MUIC register by using platform data or default data */ 1174 if (pdata && pdata->muic_data) { 1175 init_data = pdata->muic_data->init_data; 1176 num_init_data = pdata->muic_data->num_init_data; 1177 } else { 1178 init_data = default_init_data; 1179 num_init_data = ARRAY_SIZE(default_init_data); 1180 } 1181 1182 for (i = 0; i < num_init_data; i++) { 1183 regmap_write(info->max77693->regmap_muic, 1184 init_data[i].addr, 1185 init_data[i].data); 1186 } 1187 1188 if (pdata && pdata->muic_data) { 1189 struct max77693_muic_platform_data *muic_pdata 1190 = pdata->muic_data; 1191 1192 /* 1193 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB 1194 * h/w path of COMP2/COMN1 on CONTROL1 register. 1195 */ 1196 if (muic_pdata->path_uart) 1197 info->path_uart = muic_pdata->path_uart; 1198 else 1199 info->path_uart = MAX77693_CONTROL1_SW_UART; 1200 1201 if (muic_pdata->path_usb) 1202 info->path_usb = muic_pdata->path_usb; 1203 else 1204 info->path_usb = MAX77693_CONTROL1_SW_USB; 1205 1206 /* 1207 * Default delay time for detecting cable state 1208 * after certain time. 1209 */ 1210 if (muic_pdata->detcable_delay_ms) 1211 delay_jiffies = 1212 msecs_to_jiffies(muic_pdata->detcable_delay_ms); 1213 else 1214 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); 1215 } else { 1216 info->path_usb = MAX77693_CONTROL1_SW_USB; 1217 info->path_uart = MAX77693_CONTROL1_SW_UART; 1218 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); 1219 } 1220 1221 /* Set initial path for UART when JIG is connected to get serial logs */ 1222 ret = regmap_bulk_read(info->max77693->regmap_muic, 1223 MAX77693_MUIC_REG_STATUS1, info->status, 2); 1224 if (ret) { 1225 dev_err(info->dev, "failed to read MUIC register\n"); 1226 return ret; 1227 } 1228 cable_type = max77693_muic_get_cable_type(info, 1229 MAX77693_CABLE_GROUP_ADC, &attached); 1230 if (attached && (cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON || 1231 cable_type == MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF)) 1232 max77693_muic_set_path(info, info->path_uart, true); 1233 1234 /* Check revision number of MUIC device*/ 1235 ret = regmap_read(info->max77693->regmap_muic, 1236 MAX77693_MUIC_REG_ID, &id); 1237 if (ret < 0) { 1238 dev_err(&pdev->dev, "failed to read revision number\n"); 1239 return ret; 1240 } 1241 dev_info(info->dev, "device ID : 0x%x\n", id); 1242 1243 /* Set ADC debounce time */ 1244 max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS); 1245 1246 /* 1247 * Detect accessory after completing the initialization of platform 1248 * 1249 * - Use delayed workqueue to detect cable state and then 1250 * notify cable state to notifiee/platform through uevent. 1251 * After completing the booting of platform, the extcon provider 1252 * driver should notify cable state to upper layer. 1253 */ 1254 INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); 1255 queue_delayed_work(system_power_efficient_wq, &info->wq_detcable, 1256 delay_jiffies); 1257 1258 return ret; 1259 } 1260 1261 static const struct of_device_id of_max77693_muic_dt_match[] = { 1262 { .compatible = "maxim,max77693-muic", }, 1263 { /* sentinel */ }, 1264 }; 1265 MODULE_DEVICE_TABLE(of, of_max77693_muic_dt_match); 1266 1267 static struct platform_driver max77693_muic_driver = { 1268 .driver = { 1269 .name = DEV_NAME, 1270 .of_match_table = of_max77693_muic_dt_match, 1271 }, 1272 .probe = max77693_muic_probe, 1273 }; 1274 1275 module_platform_driver(max77693_muic_driver); 1276 1277 MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver"); 1278 MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>"); 1279 MODULE_LICENSE("GPL"); 1280 MODULE_ALIAS("platform:max77693-muic"); 1281