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extcon: max77693: Convert to devm_input_allocate_device()
[deliverable/linux.git] / drivers / extcon / extcon-max77693.c
CommitLineData
db1b9037
CC		 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>
39bf369e 22#include <linux/input.h>
db1b9037
CC		 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"
297620fd 33#define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
db1b9037 34
db1b9037
CC		 35enum 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
42struct max77693_muic_info {
43 struct device *dev;
44 struct max77693_dev *max77693;
45 struct extcon_dev *edev;
154f757f
CC		 46 int prev_cable_type;
47 int prev_cable_type_gnd;
db1b9037 48 int prev_chg_type;
39bf369e 49 int prev_button_type;
db1b9037
CC		 50 u8 status[2];
51
52 int irq;
53 struct work_struct irq_work;
54 struct mutex mutex;
39bf369e 55
297620fd
CC		 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
39bf369e
CC		 64 /* Button of dock device */
65 struct input_dev *dock;
2b75799f
CC		 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;
db1b9037
CC		 73};
74
154f757f
CC		 75enum 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
db1b9037
CC		 82enum 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 */
98struct max77693_muic_irq {
99 unsigned int irq;
100 const char *name;
101 unsigned int virq;
102};
103
104static 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 */
124enum 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 */
06bed0af
CC		 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 */
db1b9037
CC		 165};
166
167/* MAX77693 MUIC device support below list of accessories(external connector) */
154f757f
CC		 168enum {
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,
06bed0af 176 EXTCON_CABLE_MHL_TA,
d0587eb7
CC		 177 EXTCON_CABLE_JIG_USB_ON,
178 EXTCON_CABLE_JIG_USB_OFF,
179 EXTCON_CABLE_JIG_UART_OFF,
39bf369e
CC		 180 EXTCON_CABLE_JIG_UART_ON,
181 EXTCON_CABLE_DOCK_SMART,
182 EXTCON_CABLE_DOCK_DESK,
183 EXTCON_CABLE_DOCK_AUDIO,
154f757f
CC		 184
185 _EXTCON_CABLE_NUM,
186};
db1b9037 187
154f757f
CC		 188const 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",
06bed0af 196 [EXTCON_CABLE_MHL_TA] = "MHL_TA",
d0587eb7
CC		 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",
39bf369e
CC		 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",
d0587eb7 204
db1b9037
CC		 205 NULL,
206};
207
154f757f
CC		 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 */
db1b9037
CC		 213static int max77693_muic_set_debounce_time(struct max77693_muic_info *info,
214 enum max77693_muic_adc_debounce_time time)
215{
bf2627d6 216 int ret;
db1b9037
CC		 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:
bf2627d6
AL		 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)
db1b9037 228 dev_err(info->dev, "failed to set ADC debounce time\n");
db1b9037
CC		 229 break;
230 default:
231 dev_err(info->dev, "invalid ADC debounce time\n");
232 ret = -EINVAL;
233 break;
234 }
235
236 return ret;
237};
238
154f757f
CC		 239/*
240 * max77693_muic_set_path - Set hardware line according to attached cable
241 * @info: the instance including private data of max77693 MUIC
242 * @value: the path according to attached cable
243 * @attached: the state of cable (true:attached, false:detached)
244 *
245 * The max77693 MUIC device share outside H/W line among a varity of cables
246 * so, this function set internal path of H/W line according to the type of
247 * attached cable.
248 */
db1b9037
CC		 249static int max77693_muic_set_path(struct max77693_muic_info *info,
250 u8 val, bool attached)
251{
252 int ret = 0;
253 u8 ctrl1, ctrl2 = 0;
254
255 if (attached)
256 ctrl1 = val;
257 else
258 ctrl1 = CONTROL1_SW_OPEN;
259
260 ret = max77693_update_reg(info->max77693->regmap_muic,
261 MAX77693_MUIC_REG_CTRL1, ctrl1, COMP_SW_MASK);
262 if (ret < 0) {
263 dev_err(info->dev, "failed to update MUIC register\n");
264 goto out;
265 }
266
267 if (attached)
268 ctrl2 |= CONTROL2_CPEN_MASK; /* LowPwr=0, CPEn=1 */
269 else
270 ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */
271
272 ret = max77693_update_reg(info->max77693->regmap_muic,
273 MAX77693_MUIC_REG_CTRL2, ctrl2,
274 CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
275 if (ret < 0) {
276 dev_err(info->dev, "failed to update MUIC register\n");
277 goto out;
278 }
279
280 dev_info(info->dev,
281 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
282 ctrl1, ctrl2, attached ? "attached" : "detached");
283out:
284 return ret;
285}
286
154f757f
CC		 287/*
288 * max77693_muic_get_cable_type - Return cable type and check cable state
289 * @info: the instance including private data of max77693 MUIC
290 * @group: the path according to attached cable
291 * @attached: store cable state and return
292 *
293 * This function check the cable state either attached or detached,
294 * and then divide precise type of cable according to cable group.
295 * - MAX77693_CABLE_GROUP_ADC
296 * - MAX77693_CABLE_GROUP_ADC_GND
297 * - MAX77693_CABLE_GROUP_CHG
298 * - MAX77693_CABLE_GROUP_VBVOLT
299 */
300static int max77693_muic_get_cable_type(struct max77693_muic_info *info,
301 enum max77693_muic_cable_group group, bool *attached)
db1b9037 302{
154f757f
CC		 303 int cable_type = 0;
304 int adc;
305 int adc1k;
306 int adclow;
307 int vbvolt;
308 int chg_type;
309
310 switch (group) {
311 case MAX77693_CABLE_GROUP_ADC:
312 /*
313 * Read ADC value to check cable type and decide cable state
314 * according to cable type
315 */
316 adc = info->status[0] & STATUS1_ADC_MASK;
317 adc >>= STATUS1_ADC_SHIFT;
318
319 /*
320 * Check current cable state/cable type and store cable type
321 * (info->prev_cable_type) for handling cable when cable is
322 * detached.
323 */
324 if (adc == MAX77693_MUIC_ADC_OPEN) {
325 *attached = false;
326
327 cable_type = info->prev_cable_type;
328 info->prev_cable_type = MAX77693_MUIC_ADC_OPEN;
329 } else {
330 *attached = true;
331
332 cable_type = info->prev_cable_type = adc;
333 }
334 break;
335 case MAX77693_CABLE_GROUP_ADC_GND:
336 /*
337 * Read ADC value to check cable type and decide cable state
338 * according to cable type
339 */
340 adc = info->status[0] & STATUS1_ADC_MASK;
341 adc >>= STATUS1_ADC_SHIFT;
db1b9037 342
154f757f
CC		 343 /*
344 * Check current cable state/cable type and store cable type
345 * (info->prev_cable_type/_gnd) for handling cable when cable
346 * is detached.
347 */
348 if (adc == MAX77693_MUIC_ADC_OPEN) {
349 *attached = false;
350
351 cable_type = info->prev_cable_type_gnd;
352 info->prev_cable_type_gnd = MAX77693_MUIC_ADC_OPEN;
353 } else {
354 *attached = true;
355
356 adclow = info->status[0] & STATUS1_ADCLOW_MASK;
357 adclow >>= STATUS1_ADCLOW_SHIFT;
358 adc1k = info->status[0] & STATUS1_ADC1K_MASK;
359 adc1k >>= STATUS1_ADC1K_SHIFT;
360
361 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK;
362 vbvolt >>= STATUS2_VBVOLT_SHIFT;
363
364 /**
365 * [0x1][VBVolt][ADCLow][ADC1K]
366 * [0x1 0 0 0 ] : USB_OTG
06bed0af 367 * [0x1 1 0 0 ] : USB_OTG_VB
154f757f
CC		 368 * [0x1 0 1 0 ] : Audio Video Cable with load
369 * [0x1 0 1 1 ] : MHL without charging connector
370 * [0x1 1 1 1 ] : MHL with charging connector
371 */
372 cable_type = ((0x1 << 8)
373 | (vbvolt << 2)
374 | (adclow << 1)
375 | adc1k);
376
377 info->prev_cable_type = adc;
378 info->prev_cable_type_gnd = cable_type;
379 }
380
381 break;
382 case MAX77693_CABLE_GROUP_CHG:
383 /*
384 * Read charger type to check cable type and decide cable state
385 * according to type of charger cable.
386 */
387 chg_type = info->status[1] & STATUS2_CHGTYP_MASK;
388 chg_type >>= STATUS2_CHGTYP_SHIFT;
389
390 if (chg_type == MAX77693_CHARGER_TYPE_NONE) {
391 *attached = false;
392
393 cable_type = info->prev_chg_type;
394 info->prev_chg_type = MAX77693_CHARGER_TYPE_NONE;
395 } else {
396 *attached = true;
397
398 /*
399 * Check current cable state/cable type and store cable
400 * type(info->prev_chg_type) for handling cable when
401 * charger cable is detached.
402 */
403 cable_type = info->prev_chg_type = chg_type;
404 }
405
406 break;
407 case MAX77693_CABLE_GROUP_VBVOLT:
408 /*
409 * Read ADC value to check cable type and decide cable state
410 * according to cable type
411 */
db1b9037 412 adc = info->status[0] & STATUS1_ADC_MASK;
154f757f
CC		 413 adc >>= STATUS1_ADC_SHIFT;
414 chg_type = info->status[1] & STATUS2_CHGTYP_MASK;
415 chg_type >>= STATUS2_CHGTYP_SHIFT;
416
417 if (adc == MAX77693_MUIC_ADC_OPEN
418 && chg_type == MAX77693_CHARGER_TYPE_NONE)
419 *attached = false;
420 else
421 *attached = true;
422
423 /*
424 * Read vbvolt field, if vbvolt is 1,
425 * this cable is used for charging.
db1b9037 426 */
154f757f
CC		 427 vbvolt = info->status[1] & STATUS2_VBVOLT_MASK;
428 vbvolt >>= STATUS2_VBVOLT_SHIFT;
429
430 cable_type = vbvolt;
431 break;
432 default:
433 dev_err(info->dev, "Unknown cable group (%d)\n", group);
434 cable_type = -EINVAL;
435 break;
436 }
437
438 return cable_type;
439}
440
39bf369e
CC		 441static int max77693_muic_dock_handler(struct max77693_muic_info *info,
442 int cable_type, bool attached)
443{
444 int ret = 0;
a1626298
CC		 445 int vbvolt;
446 bool cable_attached;
39bf369e
CC		 447 char dock_name[CABLE_NAME_MAX];
448
449 dev_info(info->dev,
450 "external connector is %s (adc:0x%02x)\n",
451 attached ? "attached" : "detached", cable_type);
452
453 switch (cable_type) {
454 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
a1626298
CC		 455 /*
456 * Check power cable whether attached or detached state.
457 * The Dock-Smart device need surely external power supply.
458 * If power cable(USB/TA) isn't connected to Dock device,
459 * user can't use Dock-Smart for desktop mode.
460 */
461 vbvolt = max77693_muic_get_cable_type(info,
462 MAX77693_CABLE_GROUP_VBVOLT, &cable_attached);
463 if (attached && !vbvolt) {
464 dev_warn(info->dev,
465 "Cannot detect external power supply\n");
466 return 0;
467 }
468
469 /*
470 * Notify Dock-Smart/MHL state.
471 * - Dock-Smart device include three type of cable which
472 * are HDMI, USB for mouse/keyboard and micro-usb port
473 * for USB/TA cable. Dock-Smart device need always exteranl
474 * power supply(USB/TA cable through micro-usb cable). Dock-
475 * Smart device support screen output of target to separate
476 * monitor and mouse/keyboard for desktop mode.
477 *
478 * Features of 'USB/TA cable with Dock-Smart device'
479 * - Support MHL
480 * - Support external output feature of audio
481 * - Support charging through micro-usb port without data
482 * connection if TA cable is connected to target.
483 * - Support charging and data connection through micro-usb port
484 * if USB cable is connected between target and host
485 * device.
486 * - Support OTG device (Mouse/Keyboard)
487 */
488 ret = max77693_muic_set_path(info, info->path_usb, attached);
39bf369e 489 if (ret < 0)
a1626298 490 return ret;
39bf369e 491
39bf369e 492 extcon_set_cable_state(info->edev, "Dock-Smart", attached);
a1626298 493 extcon_set_cable_state(info->edev, "MHL", attached);
39bf369e
CC		 494 goto out;
495 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */
496 strcpy(dock_name, "Dock-Car");
497 break;
498 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
499 strcpy(dock_name, "Dock-Desk");
500 break;
501 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
502 strcpy(dock_name, "Dock-Audio");
503 if (!attached)
504 extcon_set_cable_state(info->edev, "USB", false);
505 break;
506 }
507
508 /* Dock-Car/Desk/Audio, PATH:AUDIO */
509 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
510 if (ret < 0)
a1626298 511 return ret;
39bf369e
CC		 512 extcon_set_cable_state(info->edev, dock_name, attached);
513
514out:
a1626298 515 return 0;
39bf369e
CC		 516}
517
518static int max77693_muic_dock_button_handler(struct max77693_muic_info *info,
519 int button_type, bool attached)
520{
521 struct input_dev *dock = info->dock;
522 unsigned int code;
523 int ret = 0;
524
525 switch (button_type) {
526 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON-1
527 ... MAX77693_MUIC_ADC_REMOTE_S3_BUTTON+1:
528 /* DOCK_KEY_PREV */
529 code = KEY_PREVIOUSSONG;
530 break;
531 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON-1
532 ... MAX77693_MUIC_ADC_REMOTE_S7_BUTTON+1:
533 /* DOCK_KEY_NEXT */
534 code = KEY_NEXTSONG;
535 break;
536 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON:
537 /* DOCK_VOL_DOWN */
538 code = KEY_VOLUMEDOWN;
539 break;
540 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON:
541 /* DOCK_VOL_UP */
542 code = KEY_VOLUMEUP;
543 break;
544 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON-1
545 ... MAX77693_MUIC_ADC_REMOTE_S12_BUTTON+1:
546 /* DOCK_KEY_PLAY_PAUSE */
547 code = KEY_PLAYPAUSE;
548 break;
549 default:
550 dev_err(info->dev,
551 "failed to detect %s key (adc:0x%x)\n",
552 attached ? "pressed" : "released", button_type);
553 ret = -EINVAL;
554 goto out;
555 }
556
557 input_event(dock, EV_KEY, code, attached);
558 input_sync(dock);
559
560out:
561 return 0;
562}
563
154f757f
CC		 564static int max77693_muic_adc_ground_handler(struct max77693_muic_info *info)
565{
566 int cable_type_gnd;
567 int ret = 0;
568 bool attached;
db1b9037 569
154f757f
CC		 570 cable_type_gnd = max77693_muic_get_cable_type(info,
571 MAX77693_CABLE_GROUP_ADC_GND, &attached);
db1b9037 572
154f757f 573 switch (cable_type_gnd) {
db1b9037 574 case MAX77693_MUIC_GND_USB_OTG:
06bed0af
CC		 575 case MAX77693_MUIC_GND_USB_OTG_VB:
576 /* USB_OTG, PATH: AP_USB */
db1b9037
CC		 577 ret = max77693_muic_set_path(info, CONTROL1_SW_USB, attached);
578 if (ret < 0)
579 goto out;
580 extcon_set_cable_state(info->edev, "USB-Host", attached);
581 break;
582 case MAX77693_MUIC_GND_AV_CABLE_LOAD:
06bed0af 583 /* Audio Video Cable with load, PATH:AUDIO */
db1b9037
CC		 584 ret = max77693_muic_set_path(info, CONTROL1_SW_AUDIO, attached);
585 if (ret < 0)
586 goto out;
587 extcon_set_cable_state(info->edev,
588 "Audio-video-load", attached);
589 break;
06bed0af
CC		 590 case MAX77693_MUIC_GND_MHL:
591 case MAX77693_MUIC_GND_MHL_VB:
592 /* MHL or MHL with USB/TA cable */
db1b9037
CC		 593 extcon_set_cable_state(info->edev, "MHL", attached);
594 break;
595 default:
afcfaa87 596 dev_err(info->dev, "failed to detect %s accessory\n",
db1b9037 597 attached ? "attached" : "detached");
db1b9037
CC		 598 ret = -EINVAL;
599 break;
600 }
601
602out:
603 return ret;
604}
605
d0587eb7
CC		 606static 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 }
634
635 ret = max77693_muic_set_path(info, path, attached);
636 if (ret < 0)
637 goto out;
638
639 extcon_set_cable_state(info->edev, cable_name, attached);
640out:
641 return ret;
642}
643
154f757f 644static int max77693_muic_adc_handler(struct max77693_muic_info *info)
db1b9037 645{
154f757f 646 int cable_type;
39bf369e 647 int button_type;
154f757f 648 bool attached;
db1b9037 649 int ret = 0;
db1b9037 650
154f757f
CC		 651 /* Check accessory state which is either detached or attached */
652 cable_type = max77693_muic_get_cable_type(info,
653 MAX77693_CABLE_GROUP_ADC, &attached);
db1b9037
CC		 654
655 dev_info(info->dev,
656 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n",
154f757f
CC		 657 attached ? "attached" : "detached", cable_type,
658 info->prev_cable_type);
db1b9037 659
154f757f 660 switch (cable_type) {
db1b9037
CC		 661 case MAX77693_MUIC_ADC_GROUND:
662 /* USB_OTG/MHL/Audio */
154f757f 663 max77693_muic_adc_ground_handler(info);
db1b9037
CC		 664 break;
665 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_OFF:
666 case MAX77693_MUIC_ADC_FACTORY_MODE_USB_ON:
db1b9037 667 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_OFF:
db1b9037 668 /* JIG */
d0587eb7 669 ret = max77693_muic_jig_handler(info, cable_type, attached);
db1b9037
CC		 670 if (ret < 0)
671 goto out;
db1b9037 672 break;
39bf369e
CC		 673 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
674 case MAX77693_MUIC_ADC_FACTORY_MODE_UART_ON: /* Dock-Car */
675 case MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE: /* Dock-Desk */
676 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
677 /*
678 * DOCK device
679 *
680 * The MAX77693 MUIC device can detect total 34 cable type
681 * except of charger cable and MUIC device didn't define
682 * specfic role of cable in the range of from 0x01 to 0x12
683 * of ADC value. So, can use/define cable with no role according
684 * to schema of hardware board.
685 */
686 ret = max77693_muic_dock_handler(info, cable_type, attached);
687 if (ret < 0)
688 goto out;
689 break;
690 case MAX77693_MUIC_ADC_REMOTE_S3_BUTTON: /* DOCK_KEY_PREV */
691 case MAX77693_MUIC_ADC_REMOTE_S7_BUTTON: /* DOCK_KEY_NEXT */
692 case MAX77693_MUIC_ADC_REMOTE_S9_BUTTON: /* DOCK_VOL_DOWN */
693 case MAX77693_MUIC_ADC_REMOTE_S10_BUTTON: /* DOCK_VOL_UP */
694 case MAX77693_MUIC_ADC_REMOTE_S12_BUTTON: /* DOCK_KEY_PLAY_PAUSE */
695 /*
696 * Button of DOCK device
697 * - the Prev/Next/Volume Up/Volume Down/Play-Pause button
698 *
699 * The MAX77693 MUIC device can detect total 34 cable type
700 * except of charger cable and MUIC device didn't define
701 * specfic role of cable in the range of from 0x01 to 0x12
702 * of ADC value. So, can use/define cable with no role according
703 * to schema of hardware board.
704 */
705 if (attached)
706 button_type = info->prev_button_type = cable_type;
707 else
708 button_type = info->prev_button_type;
709
710 ret = max77693_muic_dock_button_handler(info, button_type,
711 attached);
db1b9037
CC		 712 if (ret < 0)
713 goto out;
db1b9037
CC		 714 break;
715 case MAX77693_MUIC_ADC_SEND_END_BUTTON:
716 case MAX77693_MUIC_ADC_REMOTE_S1_BUTTON:
717 case MAX77693_MUIC_ADC_REMOTE_S2_BUTTON:
db1b9037
CC		 718 case MAX77693_MUIC_ADC_REMOTE_S4_BUTTON:
719 case MAX77693_MUIC_ADC_REMOTE_S5_BUTTON:
720 case MAX77693_MUIC_ADC_REMOTE_S6_BUTTON:
db1b9037 721 case MAX77693_MUIC_ADC_REMOTE_S8_BUTTON:
db1b9037 722 case MAX77693_MUIC_ADC_REMOTE_S11_BUTTON:
db1b9037
CC		 723 case MAX77693_MUIC_ADC_RESERVED_ACC_1:
724 case MAX77693_MUIC_ADC_RESERVED_ACC_2:
db1b9037
CC		 725 case MAX77693_MUIC_ADC_RESERVED_ACC_4:
726 case MAX77693_MUIC_ADC_RESERVED_ACC_5:
727 case MAX77693_MUIC_ADC_CEA936_AUDIO:
728 case MAX77693_MUIC_ADC_PHONE_POWERED_DEV:
729 case MAX77693_MUIC_ADC_TTY_CONVERTER:
730 case MAX77693_MUIC_ADC_UART_CABLE:
731 case MAX77693_MUIC_ADC_CEA936A_TYPE1_CHG:
db1b9037 732 case MAX77693_MUIC_ADC_CEA936A_TYPE2_CHG:
39bf369e
CC		 733 /*
734 * This accessory isn't used in general case if it is specially
735 * needed to detect additional accessory, should implement
736 * proper operation when this accessory is attached/detached.
737 */
db1b9037
CC		 738 dev_info(info->dev,
739 "accessory is %s but it isn't used (adc:0x%x)\n",
154f757f 740 attached ? "attached" : "detached", cable_type);
db1b9037
CC		 741 goto out;
742 default:
743 dev_err(info->dev,
744 "failed to detect %s accessory (adc:0x%x)\n",
154f757f 745 attached ? "attached" : "detached", cable_type);
db1b9037
CC		 746 ret = -EINVAL;
747 goto out;
748 }
749
750out:
751 return ret;
752}
753
154f757f 754static int max77693_muic_chg_handler(struct max77693_muic_info *info)
db1b9037 755{
db1b9037 756 int chg_type;
06bed0af 757 int cable_type_gnd;
39bf369e 758 int cable_type;
154f757f 759 bool attached;
06bed0af 760 bool cable_attached;
154f757f 761 int ret = 0;
db1b9037 762
154f757f
CC		 763 chg_type = max77693_muic_get_cable_type(info,
764 MAX77693_CABLE_GROUP_CHG, &attached);
db1b9037
CC		 765
766 dev_info(info->dev,
767 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
768 attached ? "attached" : "detached",
154f757f 769 chg_type, info->prev_chg_type);
db1b9037
CC		 770
771 switch (chg_type) {
772 case MAX77693_CHARGER_TYPE_USB:
a1626298 773 case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
0e2738f5 774 case MAX77693_CHARGER_TYPE_NONE:
a1626298 775 /* Check MAX77693_CABLE_GROUP_ADC_GND type */
06bed0af
CC		 776 cable_type_gnd = max77693_muic_get_cable_type(info,
777 MAX77693_CABLE_GROUP_ADC_GND,
778 &cable_attached);
a1626298
CC		 779 switch (cable_type_gnd) {
780 case MAX77693_MUIC_GND_MHL:
781 case MAX77693_MUIC_GND_MHL_VB:
782 /*
783 * MHL cable with MHL_TA(USB/TA) cable
784 * - MHL cable include two port(HDMI line and separate micro-
785 * usb port. When the target connect MHL cable, extcon driver
786 * check whether MHL_TA(USB/TA) cable is connected. If MHL_TA
787 * cable is connected, extcon driver notify state to notifiee
788 * for charging battery.
789 *
790 * Features of 'MHL_TA(USB/TA) with MHL cable'
791 * - Support MHL
792 * - Support charging through micro-usb port without data connection
793 */
06bed0af 794 extcon_set_cable_state(info->edev, "MHL_TA", attached);
06bed0af 795 if (!cable_attached)
a1626298
CC		 796 extcon_set_cable_state(info->edev, "MHL", cable_attached);
797 break;
39bf369e
CC		 798 }
799
a1626298 800 /* Check MAX77693_CABLE_GROUP_ADC type */
39bf369e
CC		 801 cable_type = max77693_muic_get_cable_type(info,
802 MAX77693_CABLE_GROUP_ADC,
803 &cable_attached);
a1626298
CC		 804 switch (cable_type) {
805 case MAX77693_MUIC_ADC_AV_CABLE_NOLOAD: /* Dock-Audio */
806 /*
807 * Dock-Audio device with USB/TA cable
808 * - Dock device include two port(Dock-Audio and micro-usb
809 * port). When the target connect Dock-Audio device, extcon
810 * driver check whether USB/TA cable is connected. If USB/TA
811 * cable is connected, extcon driver notify state to notifiee
812 * for charging battery.
813 *
814 * Features of 'USB/TA cable with Dock-Audio device'
815 * - Support external output feature of audio.
816 * - Support charging through micro-usb port without data
817 * connection.
818 */
06bed0af 819 extcon_set_cable_state(info->edev, "USB", attached);
39bf369e
CC		 820
821 if (!cable_attached)
a1626298
CC		 822 extcon_set_cable_state(info->edev, "Dock-Audio", cable_attached);
823 break;
824 case MAX77693_MUIC_ADC_RESERVED_ACC_3: /* Dock-Smart */
825 /*
826 * Dock-Smart device with USB/TA cable
827 * - Dock-Desk device include three type of cable which
828 * are HDMI, USB for mouse/keyboard and micro-usb port
829 * for USB/TA cable. Dock-Smart device need always exteranl
830 * power supply(USB/TA cable through micro-usb cable). Dock-
831 * Smart device support screen output of target to separate
832 * monitor and mouse/keyboard for desktop mode.
833 *
834 * Features of 'USB/TA cable with Dock-Smart device'
835 * - Support MHL
836 * - Support external output feature of audio
837 * - Support charging through micro-usb port without data
838 * connection if TA cable is connected to target.
839 * - Support charging and data connection through micro-usb port
840 * if USB cable is connected between target and host
841 * device.
842 * - Support OTG device (Mouse/Keyboard)
843 */
844 ret = max77693_muic_set_path(info, info->path_usb, attached);
845 if (ret < 0)
846 return ret;
847
848 extcon_set_cable_state(info->edev, "Dock-Smart", attached);
849 extcon_set_cable_state(info->edev, "MHL", attached);
850
851 break;
06bed0af 852 }
39bf369e 853
a1626298
CC		 854 /* Check MAX77693_CABLE_GROUP_CHG type */
855 switch (chg_type) {
856 case MAX77693_CHARGER_TYPE_NONE:
857 /*
858 * When MHL(with USB/TA cable) or Dock-Audio with USB/TA cable
859 * is attached, muic device happen below two interrupt.
860 * - 'MAX77693_MUIC_IRQ_INT1_ADC' for detecting MHL/Dock-Audio.
861 * - 'MAX77693_MUIC_IRQ_INT2_CHGTYP' for detecting USB/TA cable
862 * connected to MHL or Dock-Audio.
863 * Always, happen eariler MAX77693_MUIC_IRQ_INT1_ADC interrupt
864 * than MAX77693_MUIC_IRQ_INT2_CHGTYP interrupt.
865 *
866 * If user attach MHL (with USB/TA cable and immediately detach
867 * MHL with USB/TA cable before MAX77693_MUIC_IRQ_INT2_CHGTYP
868 * interrupt is happened, USB/TA cable remain connected state to
869 * target. But USB/TA cable isn't connected to target. The user
870 * be face with unusual action. So, driver should check this
871 * situation in spite of, that previous charger type is N/A.
872 */
0e2738f5 873 break;
a1626298
CC		 874 case MAX77693_CHARGER_TYPE_USB:
875 /* Only USB cable, PATH:AP_USB */
876 ret = max77693_muic_set_path(info, info->path_usb, attached);
877 if (ret < 0)
878 return ret;
0e2738f5 879
a1626298
CC		 880 extcon_set_cable_state(info->edev, "USB", attached);
881 break;
882 case MAX77693_CHARGER_TYPE_DEDICATED_CHG:
883 /* Only TA cable */
884 extcon_set_cable_state(info->edev, "TA", attached);
885 break;
886 }
db1b9037
CC		 887 break;
888 case MAX77693_CHARGER_TYPE_DOWNSTREAM_PORT:
889 extcon_set_cable_state(info->edev,
890 "Charge-downstream", attached);
891 break;
db1b9037
CC		 892 case MAX77693_CHARGER_TYPE_APPLE_500MA:
893 extcon_set_cable_state(info->edev, "Slow-charger", attached);
894 break;
895 case MAX77693_CHARGER_TYPE_APPLE_1A_2A:
896 extcon_set_cable_state(info->edev, "Fast-charger", attached);
897 break;
898 case MAX77693_CHARGER_TYPE_DEAD_BATTERY:
899 break;
900 default:
901 dev_err(info->dev,
902 "failed to detect %s accessory (chg_type:0x%x)\n",
903 attached ? "attached" : "detached", chg_type);
a1626298 904 return -EINVAL;
db1b9037
CC		 905 }
906
a1626298 907 return 0;
db1b9037
CC		 908}
909
910static void max77693_muic_irq_work(struct work_struct *work)
911{
912 struct max77693_muic_info *info = container_of(work,
913 struct max77693_muic_info, irq_work);
db1b9037
CC		 914 int irq_type = -1;
915 int i, ret = 0;
db1b9037
CC		 916
917 if (!info->edev)
918 return;
919
920 mutex_lock(&info->mutex);
921
922 for (i = 0 ; i < ARRAY_SIZE(muic_irqs) ; i++)
923 if (info->irq == muic_irqs[i].virq)
924 irq_type = muic_irqs[i].irq;
925
926 ret = max77693_bulk_read(info->max77693->regmap_muic,
927 MAX77693_MUIC_REG_STATUS1, 2, info->status);
928 if (ret) {
929 dev_err(info->dev, "failed to read MUIC register\n");
930 mutex_unlock(&info->mutex);
931 return;
932 }
933
934 switch (irq_type) {
935 case MAX77693_MUIC_IRQ_INT1_ADC:
936 case MAX77693_MUIC_IRQ_INT1_ADC_LOW:
937 case MAX77693_MUIC_IRQ_INT1_ADC_ERR:
938 case MAX77693_MUIC_IRQ_INT1_ADC1K:
939 /* Handle all of accessory except for
940 type of charger accessory */
154f757f 941 ret = max77693_muic_adc_handler(info);
db1b9037
CC		 942 break;
943 case MAX77693_MUIC_IRQ_INT2_CHGTYP:
944 case MAX77693_MUIC_IRQ_INT2_CHGDETREUN:
945 case MAX77693_MUIC_IRQ_INT2_DCDTMR:
946 case MAX77693_MUIC_IRQ_INT2_DXOVP:
947 case MAX77693_MUIC_IRQ_INT2_VBVOLT:
948 case MAX77693_MUIC_IRQ_INT2_VIDRM:
949 /* Handle charger accessory */
154f757f 950 ret = max77693_muic_chg_handler(info);
db1b9037
CC		 951 break;
952 case MAX77693_MUIC_IRQ_INT3_EOC:
953 case MAX77693_MUIC_IRQ_INT3_CGMBC:
954 case MAX77693_MUIC_IRQ_INT3_OVP:
955 case MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR:
956 case MAX77693_MUIC_IRQ_INT3_CHG_ENABLED:
957 case MAX77693_MUIC_IRQ_INT3_BAT_DET:
958 break;
959 default:
960 dev_err(info->dev, "muic interrupt: irq %d occurred\n",
961 irq_type);
962 break;
963 }
964
965 if (ret < 0)
966 dev_err(info->dev, "failed to handle MUIC interrupt\n");
967
968 mutex_unlock(&info->mutex);
969
970 return;
971}
972
973static irqreturn_t max77693_muic_irq_handler(int irq, void *data)
974{
975 struct max77693_muic_info *info = data;
976
977 info->irq = irq;
978 schedule_work(&info->irq_work);
979
980 return IRQ_HANDLED;
981}
982
983static struct regmap_config max77693_muic_regmap_config = {
984 .reg_bits = 8,
985 .val_bits = 8,
986};
987
988static int max77693_muic_detect_accessory(struct max77693_muic_info *info)
989{
990 int ret = 0;
154f757f
CC		 991 int adc;
992 int chg_type;
993 bool attached;
db1b9037
CC		 994
995 mutex_lock(&info->mutex);
996
997 /* Read STATUSx register to detect accessory */
998 ret = max77693_bulk_read(info->max77693->regmap_muic,
999 MAX77693_MUIC_REG_STATUS1, 2, info->status);
1000 if (ret) {
1001 dev_err(info->dev, "failed to read MUIC register\n");
1002 mutex_unlock(&info->mutex);
1003 return -EINVAL;
1004 }
1005
154f757f
CC		 1006 adc = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_ADC,
1007 &attached);
1008 if (attached && adc != MAX77693_MUIC_ADC_OPEN) {
1009 ret = max77693_muic_adc_handler(info);
db1b9037 1010 if (ret < 0)
154f757f 1011 dev_err(info->dev, "Cannot detect accessory\n");
db1b9037
CC		 1012 }
1013
154f757f
CC		 1014 chg_type = max77693_muic_get_cable_type(info, MAX77693_CABLE_GROUP_CHG,
1015 &attached);
1016 if (attached && chg_type != MAX77693_CHARGER_TYPE_NONE) {
1017 ret = max77693_muic_chg_handler(info);
db1b9037 1018 if (ret < 0)
154f757f 1019 dev_err(info->dev, "Cannot detect charger accessory\n");
db1b9037
CC		 1020 }
1021
db1b9037 1022 mutex_unlock(&info->mutex);
154f757f 1023
db1b9037
CC		 1024 return ret;
1025}
1026
297620fd
CC		 1027static void max77693_muic_detect_cable_wq(struct work_struct *work)
1028{
1029 struct max77693_muic_info *info = container_of(to_delayed_work(work),
1030 struct max77693_muic_info, wq_detcable);
1031
1032 max77693_muic_detect_accessory(info);
1033}
1034
44f34fd4 1035static int max77693_muic_probe(struct platform_device *pdev)
db1b9037
CC		 1036{
1037 struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
f8457d57
CC		 1038 struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev);
1039 struct max77693_muic_platform_data *muic_pdata = pdata->muic_data;
db1b9037 1040 struct max77693_muic_info *info;
297620fd
CC		 1041 int delay_jiffies;
1042 int ret;
1043 int i;
db1b9037
CC		 1044 u8 id;
1045
f4bb5cb5
SK		 1046 info = devm_kzalloc(&pdev->dev, sizeof(struct max77693_muic_info),
1047 GFP_KERNEL);
db1b9037
CC		 1048 if (!info) {
1049 dev_err(&pdev->dev, "failed to allocate memory\n");
f4bb5cb5 1050 return -ENOMEM;
db1b9037
CC		 1051 }
1052 info->dev = &pdev->dev;
1053 info->max77693 = max77693;
1967fa08 1054 if (info->max77693->regmap_muic) {
b186b124 1055 dev_dbg(&pdev->dev, "allocate register map\n");
1967fa08 1056 } else {
b186b124
CC		 1057 info->max77693->regmap_muic = devm_regmap_init_i2c(
1058 info->max77693->muic,
1059 &max77693_muic_regmap_config);
1060 if (IS_ERR(info->max77693->regmap_muic)) {
1061 ret = PTR_ERR(info->max77693->regmap_muic);
1062 dev_err(max77693->dev,
1063 "failed to allocate register map: %d\n", ret);
3bf742ff 1064 return ret;
b186b124 1065 }
db1b9037 1066 }
39bf369e
CC		 1067
1068 /* Register input device for button of dock device */
eff7d74f 1069 info->dock = devm_input_allocate_device(&pdev->dev);
39bf369e
CC		 1070 if (!info->dock) {
1071 dev_err(&pdev->dev, "%s: failed to allocate input\n", __func__);
1072 return -ENOMEM;
1073 }
1074 info->dock->name = "max77693-muic/dock";
1075 info->dock->phys = "max77693-muic/extcon";
1076 info->dock->dev.parent = &pdev->dev;
1077
1078 __set_bit(EV_REP, info->dock->evbit);
1079
1080 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEUP);
1081 input_set_capability(info->dock, EV_KEY, KEY_VOLUMEDOWN);
1082 input_set_capability(info->dock, EV_KEY, KEY_PLAYPAUSE);
1083 input_set_capability(info->dock, EV_KEY, KEY_PREVIOUSSONG);
1084 input_set_capability(info->dock, EV_KEY, KEY_NEXTSONG);
1085
1086 ret = input_register_device(info->dock);
1087 if (ret < 0) {
1088 dev_err(&pdev->dev, "Cannot register input device error(%d)\n",
1089 ret);
1090 return ret;
1091 }
1092
db1b9037
CC		 1093 platform_set_drvdata(pdev, info);
1094 mutex_init(&info->mutex);
1095
1096 INIT_WORK(&info->irq_work, max77693_muic_irq_work);
1097
1098 /* Support irq domain for MAX77693 MUIC device */
1099 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
1100 struct max77693_muic_irq *muic_irq = &muic_irqs[i];
00af4b16 1101 unsigned int virq = 0;
db1b9037
CC		 1102
1103 virq = irq_create_mapping(max77693->irq_domain, muic_irq->irq);
00af4b16
SK		 1104 if (!virq) {
1105 ret = -EINVAL;
db1b9037 1106 goto err_irq;
00af4b16 1107 }
db1b9037
CC		 1108 muic_irq->virq = virq;
1109
1110 ret = request_threaded_irq(virq, NULL,
1111 max77693_muic_irq_handler,
ae3b3215
CC		 1112 IRQF_NO_SUSPEND,
1113 muic_irq->name, info);
db1b9037
CC		 1114 if (ret) {
1115 dev_err(&pdev->dev,
1116 "failed: irq request (IRQ: %d,"
1117 " error :%d)\n",
1118 muic_irq->irq, ret);
db1b9037
CC		 1119 goto err_irq;
1120 }
1121 }
1122
1123 /* Initialize extcon device */
f4bb5cb5
SK		 1124 info->edev = devm_kzalloc(&pdev->dev, sizeof(struct extcon_dev),
1125 GFP_KERNEL);
db1b9037
CC		 1126 if (!info->edev) {
1127 dev_err(&pdev->dev, "failed to allocate memory for extcon\n");
1128 ret = -ENOMEM;
1129 goto err_irq;
1130 }
1131 info->edev->name = DEV_NAME;
1132 info->edev->supported_cable = max77693_extcon_cable;
1133 ret = extcon_dev_register(info->edev, NULL);
1134 if (ret) {
1135 dev_err(&pdev->dev, "failed to register extcon device\n");
f4bb5cb5 1136 goto err_irq;
db1b9037
CC		 1137 }
1138
f8457d57
CC		 1139 /* Initialize MUIC register by using platform data */
1140 for (i = 0 ; i < muic_pdata->num_init_data ; i++) {
1141 enum max77693_irq_source irq_src = MAX77693_IRQ_GROUP_NR;
1142
1143 max77693_write_reg(info->max77693->regmap_muic,
1144 muic_pdata->init_data[i].addr,
1145 muic_pdata->init_data[i].data);
1146
1147 switch (muic_pdata->init_data[i].addr) {
1148 case MAX77693_MUIC_REG_INTMASK1:
1149 irq_src = MUIC_INT1;
1150 break;
1151 case MAX77693_MUIC_REG_INTMASK2:
1152 irq_src = MUIC_INT2;
1153 break;
1154 case MAX77693_MUIC_REG_INTMASK3:
1155 irq_src = MUIC_INT3;
1156 break;
1157 }
1158
1159 if (irq_src < MAX77693_IRQ_GROUP_NR)
1160 info->max77693->irq_masks_cur[irq_src]
1161 = muic_pdata->init_data[i].data;
1162 }
1163
2b75799f
CC		 1164 /*
1165 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
1166 * h/w path of COMP2/COMN1 on CONTROL1 register.
1167 */
1168 if (muic_pdata->path_uart)
1169 info->path_uart = muic_pdata->path_uart;
1170 else
1171 info->path_uart = CONTROL1_SW_UART;
1172
1173 if (muic_pdata->path_usb)
1174 info->path_usb = muic_pdata->path_usb;
1175 else
1176 info->path_usb = CONTROL1_SW_USB;
1177
1178 /* Set initial path for UART */
1179 max77693_muic_set_path(info, info->path_uart, true);
1180
db1b9037
CC		 1181 /* Check revision number of MUIC device*/
1182 ret = max77693_read_reg(info->max77693->regmap_muic,
1183 MAX77693_MUIC_REG_ID, &id);
1184 if (ret < 0) {
1185 dev_err(&pdev->dev, "failed to read revision number\n");
39bf369e 1186 goto err_extcon;
db1b9037
CC		 1187 }
1188 dev_info(info->dev, "device ID : 0x%x\n", id);
1189
1190 /* Set ADC debounce time */
1191 max77693_muic_set_debounce_time(info, ADC_DEBOUNCE_TIME_25MS);
1192
297620fd
CC		 1193 /*
1194 * Detect accessory after completing the initialization of platform
1195 *
1196 * - Use delayed workqueue to detect cable state and then
1197 * notify cable state to notifiee/platform through uevent.
1198 * After completing the booting of platform, the extcon provider
1199 * driver should notify cable state to upper layer.
1200 */
1201 INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq);
1202 if (muic_pdata->detcable_delay_ms)
1203 delay_jiffies = msecs_to_jiffies(muic_pdata->detcable_delay_ms);
1204 else
1205 delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
1206 schedule_delayed_work(&info->wq_detcable, delay_jiffies);
db1b9037
CC		 1207
1208 return ret;
1209
39bf369e
CC		 1210err_extcon:
1211 extcon_dev_unregister(info->edev);
db1b9037 1212err_irq:
00af4b16
SK		 1213 while (--i >= 0)
1214 free_irq(muic_irqs[i].virq, info);
db1b9037
CC		 1215 return ret;
1216}
1217
93ed0327 1218static int max77693_muic_remove(struct platform_device *pdev)
db1b9037
CC		 1219{
1220 struct max77693_muic_info *info = platform_get_drvdata(pdev);
1221 int i;
1222
1223 for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
1224 free_irq(muic_irqs[i].virq, info);
1225 cancel_work_sync(&info->irq_work);
39bf369e 1226 input_unregister_device(info->dock);
db1b9037 1227 extcon_dev_unregister(info->edev);
db1b9037
CC		 1228
1229 return 0;
1230}
1231
1232static struct platform_driver max77693_muic_driver = {
1233 .driver = {
1234 .name = DEV_NAME,
1235 .owner = THIS_MODULE,
1236 },
1237 .probe = max77693_muic_probe,
5f7e2228 1238 .remove = max77693_muic_remove,
db1b9037
CC		 1239};
1240
1241module_platform_driver(max77693_muic_driver);
1242
1243MODULE_DESCRIPTION("Maxim MAX77693 Extcon driver");
1244MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
1245MODULE_LICENSE("GPL");
1246MODULE_ALIAS("platform:extcon-max77693");
Linux kernel - Deliverables
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