]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - drivers/extcon/extcon-max77843.c
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
extcon: arizona: Disable mic detect if running when driver is removed
[mirror_ubuntu-bionic-kernel.git] / drivers / extcon / extcon-max77843.c
CommitLineData
27a28d32
JK		 1/*
2 * extcon-max77843.c - Maxim MAX77843 extcon driver to support
3 * MUIC(Micro USB Interface Controller)
4 *
5 * Copyright (C) 2015 Samsung Electronics
6 * Author: Jaewon Kim <jaewon02.kim@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
176aa360 14#include <linux/extcon-provider.h>
27a28d32
JK		 15#include <linux/i2c.h>
16#include <linux/interrupt.h>
17#include <linux/kernel.h>
bc1aadc1 18#include <linux/mfd/max77693-common.h>
27a28d32
JK		 19#include <linux/mfd/max77843-private.h>
20#include <linux/module.h>
21#include <linux/platform_device.h>
22#include <linux/workqueue.h>
23
24#define DELAY_MS_DEFAULT 15000 /* unit: millisecond */
25
26enum max77843_muic_status {
27 MAX77843_MUIC_STATUS1 = 0,
28 MAX77843_MUIC_STATUS2,
29 MAX77843_MUIC_STATUS3,
30
31 MAX77843_MUIC_STATUS_NUM,
32};
33
34struct max77843_muic_info {
35 struct device *dev;
bc1aadc1 36 struct max77693_dev *max77843;
27a28d32
JK		 37 struct extcon_dev *edev;
38
39 struct mutex mutex;
40 struct work_struct irq_work;
41 struct delayed_work wq_detcable;
42
43 u8 status[MAX77843_MUIC_STATUS_NUM];
44 int prev_cable_type;
45 int prev_chg_type;
46 int prev_gnd_type;
47
48 bool irq_adc;
49 bool irq_chg;
50};
51
52enum max77843_muic_cable_group {
53 MAX77843_CABLE_GROUP_ADC = 0,
54 MAX77843_CABLE_GROUP_ADC_GND,
55 MAX77843_CABLE_GROUP_CHG,
56};
57
58enum max77843_muic_adc_debounce_time {
59 MAX77843_DEBOUNCE_TIME_5MS = 0,
60 MAX77843_DEBOUNCE_TIME_10MS,
61 MAX77843_DEBOUNCE_TIME_25MS,
62 MAX77843_DEBOUNCE_TIME_38_62MS,
63};
64
65/* Define accessory cable type */
66enum max77843_muic_accessory_type {
67 MAX77843_MUIC_ADC_GROUND = 0,
68 MAX77843_MUIC_ADC_SEND_END_BUTTON,
69 MAX77843_MUIC_ADC_REMOTE_S1_BUTTON,
70 MAX77843_MUIC_ADC_REMOTE_S2_BUTTON,
71 MAX77843_MUIC_ADC_REMOTE_S3_BUTTON,
72 MAX77843_MUIC_ADC_REMOTE_S4_BUTTON,
73 MAX77843_MUIC_ADC_REMOTE_S5_BUTTON,
74 MAX77843_MUIC_ADC_REMOTE_S6_BUTTON,
75 MAX77843_MUIC_ADC_REMOTE_S7_BUTTON,
76 MAX77843_MUIC_ADC_REMOTE_S8_BUTTON,
77 MAX77843_MUIC_ADC_REMOTE_S9_BUTTON,
78 MAX77843_MUIC_ADC_REMOTE_S10_BUTTON,
79 MAX77843_MUIC_ADC_REMOTE_S11_BUTTON,
80 MAX77843_MUIC_ADC_REMOTE_S12_BUTTON,
81 MAX77843_MUIC_ADC_RESERVED_ACC_1,
82 MAX77843_MUIC_ADC_RESERVED_ACC_2,
4a4a8714 83 MAX77843_MUIC_ADC_RESERVED_ACC_3, /* SmartDock */
27a28d32
JK		 84 MAX77843_MUIC_ADC_RESERVED_ACC_4,
85 MAX77843_MUIC_ADC_RESERVED_ACC_5,
86 MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE2,
87 MAX77843_MUIC_ADC_PHONE_POWERED_DEV,
88 MAX77843_MUIC_ADC_TTY_CONVERTER,
89 MAX77843_MUIC_ADC_UART_CABLE,
90 MAX77843_MUIC_ADC_CEA936A_TYPE1_CHG,
91 MAX77843_MUIC_ADC_FACTORY_MODE_USB_OFF,
92 MAX77843_MUIC_ADC_FACTORY_MODE_USB_ON,
93 MAX77843_MUIC_ADC_AV_CABLE_NOLOAD,
94 MAX77843_MUIC_ADC_CEA936A_TYPE2_CHG,
95 MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF,
96 MAX77843_MUIC_ADC_FACTORY_MODE_UART_ON,
97 MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE1,
98 MAX77843_MUIC_ADC_OPEN,
99
af57fa4d
SR		 100 /*
101 * The below accessories should check
102 * not only ADC value but also ADC1K and VBVolt value.
103 */
27a28d32
JK		 104 /* Offset|ADC1K|VBVolt| */
105 MAX77843_MUIC_GND_USB_HOST = 0x100, /* 0x1| 0| 0| */
106 MAX77843_MUIC_GND_USB_HOST_VB = 0x101, /* 0x1| 0| 1| */
107 MAX77843_MUIC_GND_MHL = 0x102, /* 0x1| 1| 0| */
108 MAX77843_MUIC_GND_MHL_VB = 0x103, /* 0x1| 1| 1| */
109};
110
111/* Define charger cable type */
112enum max77843_muic_charger_type {
113 MAX77843_MUIC_CHG_NONE = 0,
114 MAX77843_MUIC_CHG_USB,
115 MAX77843_MUIC_CHG_DOWNSTREAM,
116 MAX77843_MUIC_CHG_DEDICATED,
117 MAX77843_MUIC_CHG_SPECIAL_500MA,
118 MAX77843_MUIC_CHG_SPECIAL_1A,
119 MAX77843_MUIC_CHG_SPECIAL_BIAS,
120 MAX77843_MUIC_CHG_RESERVED,
121 MAX77843_MUIC_CHG_GND,
4a4a8714 122 MAX77843_MUIC_CHG_DOCK,
27a28d32
JK		 123};
124
73b6ecdb 125static const unsigned int max77843_extcon_cable[] = {
2a9de9c0
CC		 126 EXTCON_USB,
127 EXTCON_USB_HOST,
8b45b6a0 128 EXTCON_CHG_USB_SDP,
11eecf91
CC		 129 EXTCON_CHG_USB_DCP,
130 EXTCON_CHG_USB_CDP,
131 EXTCON_CHG_USB_FAST,
132 EXTCON_CHG_USB_SLOW,
133 EXTCON_DISP_MHL,
4a4a8714 134 EXTCON_DOCK,
2a9de9c0
CC		 135 EXTCON_JIG,
136 EXTCON_NONE,
27a28d32
JK		 137};
138
139struct max77843_muic_irq {
140 unsigned int irq;
141 const char *name;
142 unsigned int virq;
143};
144
145static struct max77843_muic_irq max77843_muic_irqs[] = {
146 { MAX77843_MUIC_IRQ_INT1_ADC, "MUIC-ADC" },
147 { MAX77843_MUIC_IRQ_INT1_ADCERROR, "MUIC-ADC_ERROR" },
148 { MAX77843_MUIC_IRQ_INT1_ADC1K, "MUIC-ADC1K" },
149 { MAX77843_MUIC_IRQ_INT2_CHGTYP, "MUIC-CHGTYP" },
150 { MAX77843_MUIC_IRQ_INT2_CHGDETRUN, "MUIC-CHGDETRUN" },
151 { MAX77843_MUIC_IRQ_INT2_DCDTMR, "MUIC-DCDTMR" },
152 { MAX77843_MUIC_IRQ_INT2_DXOVP, "MUIC-DXOVP" },
153 { MAX77843_MUIC_IRQ_INT2_VBVOLT, "MUIC-VBVOLT" },
154 { MAX77843_MUIC_IRQ_INT3_VBADC, "MUIC-VBADC" },
155 { MAX77843_MUIC_IRQ_INT3_VDNMON, "MUIC-VDNMON" },
156 { MAX77843_MUIC_IRQ_INT3_DNRES, "MUIC-DNRES" },
157 { MAX77843_MUIC_IRQ_INT3_MPNACK, "MUIC-MPNACK"},
158 { MAX77843_MUIC_IRQ_INT3_MRXBUFOW, "MUIC-MRXBUFOW"},
159 { MAX77843_MUIC_IRQ_INT3_MRXTRF, "MUIC-MRXTRF"},
160 { MAX77843_MUIC_IRQ_INT3_MRXPERR, "MUIC-MRXPERR"},
161 { MAX77843_MUIC_IRQ_INT3_MRXRDY, "MUIC-MRXRDY"},
162};
163
164static const struct regmap_config max77843_muic_regmap_config = {
165 .reg_bits = 8,
166 .val_bits = 8,
167 .max_register = MAX77843_MUIC_REG_END,
168};
169
170static const struct regmap_irq max77843_muic_irq[] = {
171 /* INT1 interrupt */
172 { .reg_offset = 0, .mask = MAX77843_MUIC_ADC, },
173 { .reg_offset = 0, .mask = MAX77843_MUIC_ADCERROR, },
174 { .reg_offset = 0, .mask = MAX77843_MUIC_ADC1K, },
175
176 /* INT2 interrupt */
177 { .reg_offset = 1, .mask = MAX77843_MUIC_CHGTYP, },
178 { .reg_offset = 1, .mask = MAX77843_MUIC_CHGDETRUN, },
179 { .reg_offset = 1, .mask = MAX77843_MUIC_DCDTMR, },
180 { .reg_offset = 1, .mask = MAX77843_MUIC_DXOVP, },
181 { .reg_offset = 1, .mask = MAX77843_MUIC_VBVOLT, },
182
183 /* INT3 interrupt */
184 { .reg_offset = 2, .mask = MAX77843_MUIC_VBADC, },
185 { .reg_offset = 2, .mask = MAX77843_MUIC_VDNMON, },
186 { .reg_offset = 2, .mask = MAX77843_MUIC_DNRES, },
187 { .reg_offset = 2, .mask = MAX77843_MUIC_MPNACK, },
188 { .reg_offset = 2, .mask = MAX77843_MUIC_MRXBUFOW, },
189 { .reg_offset = 2, .mask = MAX77843_MUIC_MRXTRF, },
190 { .reg_offset = 2, .mask = MAX77843_MUIC_MRXPERR, },
191 { .reg_offset = 2, .mask = MAX77843_MUIC_MRXRDY, },
192};
193
194static const struct regmap_irq_chip max77843_muic_irq_chip = {
195 .name = "max77843-muic",
196 .status_base = MAX77843_MUIC_REG_INT1,
197 .mask_base = MAX77843_MUIC_REG_INTMASK1,
198 .mask_invert = true,
199 .num_regs = 3,
200 .irqs = max77843_muic_irq,
201 .num_irqs = ARRAY_SIZE(max77843_muic_irq),
202};
203
204static int max77843_muic_set_path(struct max77843_muic_info *info,
4a4a8714 205 u8 val, bool attached, bool nobccomp)
27a28d32 206{
bc1aadc1 207 struct max77693_dev *max77843 = info->max77843;
27a28d32
JK		 208 int ret = 0;
209 unsigned int ctrl1, ctrl2;
210
211 if (attached)
212 ctrl1 = val;
213 else
309a3e00 214 ctrl1 = MAX77843_MUIC_CONTROL1_SW_OPEN;
4a4a8714
MS		 215 if (nobccomp) {
216 /* Disable BC1.2 protocol and force manual switch control */
217 ctrl1 |= MAX77843_MUIC_CONTROL1_NOBCCOMP_MASK;
218 }
27a28d32
JK		 219
220 ret = regmap_update_bits(max77843->regmap_muic,
221 MAX77843_MUIC_REG_CONTROL1,
4a4a8714
MS		 222 MAX77843_MUIC_CONTROL1_COM_SW |
223 MAX77843_MUIC_CONTROL1_NOBCCOMP_MASK,
224 ctrl1);
27a28d32
JK		 225 if (ret < 0) {
226 dev_err(info->dev, "Cannot switch MUIC port\n");
227 return ret;
228 }
229
230 if (attached)
231 ctrl2 = MAX77843_MUIC_CONTROL2_CPEN_MASK;
232 else
233 ctrl2 = MAX77843_MUIC_CONTROL2_LOWPWR_MASK;
234
235 ret = regmap_update_bits(max77843->regmap_muic,
236 MAX77843_MUIC_REG_CONTROL2,
237 MAX77843_MUIC_CONTROL2_LOWPWR_MASK |
238 MAX77843_MUIC_CONTROL2_CPEN_MASK, ctrl2);
239 if (ret < 0) {
240 dev_err(info->dev, "Cannot update lowpower mode\n");
241 return ret;
242 }
243
244 dev_dbg(info->dev,
245 "CONTROL1 : 0x%02x, CONTROL2 : 0x%02x, state : %s\n",
246 ctrl1, ctrl2, attached ? "attached" : "detached");
247
248 return 0;
249}
250
7b965110
MS		 251static void max77843_charger_set_otg_vbus(struct max77843_muic_info *info,
252 bool on)
253{
254 struct max77693_dev *max77843 = info->max77843;
255 unsigned int cnfg00;
256
257 if (on)
258 cnfg00 = MAX77843_CHG_OTG_MASK | MAX77843_CHG_BOOST_MASK;
259 else
260 cnfg00 = MAX77843_CHG_ENABLE | MAX77843_CHG_BUCK_MASK;
261
262 regmap_update_bits(max77843->regmap_chg, MAX77843_CHG_REG_CHG_CNFG_00,
263 MAX77843_CHG_MODE_MASK, cnfg00);
264}
265
27a28d32
JK		 266static int max77843_muic_get_cable_type(struct max77843_muic_info *info,
267 enum max77843_muic_cable_group group, bool *attached)
268{
269 int adc, chg_type, cable_type, gnd_type;
270
271 adc = info->status[MAX77843_MUIC_STATUS1] &
272 MAX77843_MUIC_STATUS1_ADC_MASK;
309a3e00 273 adc >>= MAX77843_MUIC_STATUS1_ADC_SHIFT;
27a28d32
JK		 274
275 switch (group) {
276 case MAX77843_CABLE_GROUP_ADC:
277 if (adc == MAX77843_MUIC_ADC_OPEN) {
278 *attached = false;
279 cable_type = info->prev_cable_type;
280 info->prev_cable_type = MAX77843_MUIC_ADC_OPEN;
281 } else {
282 *attached = true;
283 cable_type = info->prev_cable_type = adc;
284 }
285 break;
286 case MAX77843_CABLE_GROUP_CHG:
287 chg_type = info->status[MAX77843_MUIC_STATUS2] &
288 MAX77843_MUIC_STATUS2_CHGTYP_MASK;
289
290 /* Check GROUND accessory with charger cable */
291 if (adc == MAX77843_MUIC_ADC_GROUND) {
292 if (chg_type == MAX77843_MUIC_CHG_NONE) {
af57fa4d
SR		 293 /*
294 * The following state when charger cable is
27a28d32 295 * disconnected but the GROUND accessory still
af57fa4d
SR		 296 * connected.
297 */
27a28d32
JK		 298 *attached = false;
299 cable_type = info->prev_chg_type;
300 info->prev_chg_type = MAX77843_MUIC_CHG_NONE;
301 } else {
302
af57fa4d
SR		 303 /*
304 * The following state when charger cable is
305 * connected on the GROUND accessory.
306 */
27a28d32
JK		 307 *attached = true;
308 cable_type = MAX77843_MUIC_CHG_GND;
309 info->prev_chg_type = MAX77843_MUIC_CHG_GND;
310 }
311 break;
312 }
313
4a4a8714
MS		 314 if (adc == MAX77843_MUIC_ADC_RESERVED_ACC_3) { /* SmartDock */
315 if (chg_type == MAX77843_MUIC_CHG_NONE) {
316 *attached = false;
317 cable_type = info->prev_chg_type;
318 info->prev_chg_type = MAX77843_MUIC_CHG_NONE;
319 } else {
320 *attached = true;
321 cable_type = MAX77843_MUIC_CHG_DOCK;
322 info->prev_chg_type = MAX77843_MUIC_CHG_DOCK;
323 }
324 break;
325 }
326
27a28d32
JK		 327 if (chg_type == MAX77843_MUIC_CHG_NONE) {
328 *attached = false;
329 cable_type = info->prev_chg_type;
330 info->prev_chg_type = MAX77843_MUIC_CHG_NONE;
331 } else {
332 *attached = true;
333 cable_type = info->prev_chg_type = chg_type;
334 }
335 break;
336 case MAX77843_CABLE_GROUP_ADC_GND:
337 if (adc == MAX77843_MUIC_ADC_OPEN) {
338 *attached = false;
339 cable_type = info->prev_gnd_type;
340 info->prev_gnd_type = MAX77843_MUIC_ADC_OPEN;
341 } else {
342 *attached = true;
343
af57fa4d
SR		 344 /*
345 * Offset|ADC1K|VBVolt|
27a28d32
JK		 346 * 0x1| 0| 0| USB-HOST
347 * 0x1| 0| 1| USB-HOST with VB
348 * 0x1| 1| 0| MHL
af57fa4d
SR		 349 * 0x1| 1| 1| MHL with VB
350 */
27a28d32
JK		 351 /* Get ADC1K register bit */
352 gnd_type = (info->status[MAX77843_MUIC_STATUS1] &
353 MAX77843_MUIC_STATUS1_ADC1K_MASK);
354
355 /* Get VBVolt register bit */
356 gnd_type |= (info->status[MAX77843_MUIC_STATUS2] &
357 MAX77843_MUIC_STATUS2_VBVOLT_MASK);
309a3e00 358 gnd_type >>= MAX77843_MUIC_STATUS2_VBVOLT_SHIFT;
27a28d32
JK		 359
360 /* Offset of GND cable */
361 gnd_type |= MAX77843_MUIC_GND_USB_HOST;
362 cable_type = info->prev_gnd_type = gnd_type;
363 }
364 break;
365 default:
366 dev_err(info->dev, "Unknown cable group (%d)\n", group);
367 cable_type = -EINVAL;
368 break;
369 }
370
371 return cable_type;
372}
373
374static int max77843_muic_adc_gnd_handler(struct max77843_muic_info *info)
375{
376 int ret, gnd_cable_type;
377 bool attached;
378
379 gnd_cable_type = max77843_muic_get_cable_type(info,
380 MAX77843_CABLE_GROUP_ADC_GND, &attached);
381 dev_dbg(info->dev, "external connector is %s (gnd:0x%02x)\n",
382 attached ? "attached" : "detached", gnd_cable_type);
383
384 switch (gnd_cable_type) {
385 case MAX77843_MUIC_GND_USB_HOST:
386 case MAX77843_MUIC_GND_USB_HOST_VB:
309a3e00
KK		 387 ret = max77843_muic_set_path(info,
388 MAX77843_MUIC_CONTROL1_SW_USB,
4a4a8714 389 attached, false);
27a28d32
JK		 390 if (ret < 0)
391 return ret;
392
8670b459 393 extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
7b965110 394 max77843_charger_set_otg_vbus(info, attached);
27a28d32
JK		 395 break;
396 case MAX77843_MUIC_GND_MHL_VB:
397 case MAX77843_MUIC_GND_MHL:
309a3e00
KK		 398 ret = max77843_muic_set_path(info,
399 MAX77843_MUIC_CONTROL1_SW_OPEN,
4a4a8714 400 attached, false);
27a28d32
JK		 401 if (ret < 0)
402 return ret;
403
8670b459 404 extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
27a28d32
JK		 405 break;
406 default:
407 dev_err(info->dev, "failed to detect %s accessory(gnd:0x%x)\n",
408 attached ? "attached" : "detached", gnd_cable_type);
409 return -EINVAL;
410 }
411
412 return 0;
413}
414
415static int max77843_muic_jig_handler(struct max77843_muic_info *info,
416 int cable_type, bool attached)
417{
418 int ret;
309a3e00 419 u8 path = MAX77843_MUIC_CONTROL1_SW_OPEN;
27a28d32
JK		 420
421 dev_dbg(info->dev, "external connector is %s (adc:0x%02x)\n",
422 attached ? "attached" : "detached", cable_type);
423
424 switch (cable_type) {
425 case MAX77843_MUIC_ADC_FACTORY_MODE_USB_OFF:
27a28d32 426 case MAX77843_MUIC_ADC_FACTORY_MODE_USB_ON:
309a3e00 427 path = MAX77843_MUIC_CONTROL1_SW_USB;
27a28d32
JK		 428 break;
429 case MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF:
309a3e00 430 path = MAX77843_MUIC_CONTROL1_SW_UART;
27a28d32
JK		 431 break;
432 default:
41b3c015 433 return -EINVAL;
27a28d32
JK		 434 }
435
4a4a8714 436 ret = max77843_muic_set_path(info, path, attached, false);
41b3c015
CC		 437 if (ret < 0)
438 return ret;
439
8670b459 440 extcon_set_state_sync(info->edev, EXTCON_JIG, attached);
41b3c015 441
27a28d32
JK		 442 return 0;
443}
444
4a4a8714
MS		 445static int max77843_muic_dock_handler(struct max77843_muic_info *info,
446 bool attached)
447{
448 int ret;
449
450 dev_dbg(info->dev, "external connector is %s (adc: 0x10)\n",
451 attached ? "attached" : "detached");
452
453 ret = max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_USB,
454 attached, attached);
455 if (ret < 0)
456 return ret;
457
458 extcon_set_state_sync(info->edev, EXTCON_DISP_MHL, attached);
459 extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
460 extcon_set_state_sync(info->edev, EXTCON_DOCK, attached);
461
462 return 0;
463}
464
27a28d32
JK		 465static int max77843_muic_adc_handler(struct max77843_muic_info *info)
466{
467 int ret, cable_type;
468 bool attached;
469
470 cable_type = max77843_muic_get_cable_type(info,
471 MAX77843_CABLE_GROUP_ADC, &attached);
472
473 dev_dbg(info->dev,
474 "external connector is %s (adc:0x%02x, prev_adc:0x%x)\n",
475 attached ? "attached" : "detached", cable_type,
476 info->prev_cable_type);
477
478 switch (cable_type) {
4a4a8714
MS		 479 case MAX77843_MUIC_ADC_RESERVED_ACC_3: /* SmartDock */
480 ret = max77843_muic_dock_handler(info, attached);
481 if (ret < 0)
482 return ret;
483 break;
27a28d32
JK		 484 case MAX77843_MUIC_ADC_GROUND:
485 ret = max77843_muic_adc_gnd_handler(info);
486 if (ret < 0)
487 return ret;
488 break;
489 case MAX77843_MUIC_ADC_FACTORY_MODE_USB_OFF:
490 case MAX77843_MUIC_ADC_FACTORY_MODE_USB_ON:
491 case MAX77843_MUIC_ADC_FACTORY_MODE_UART_OFF:
492 ret = max77843_muic_jig_handler(info, cable_type, attached);
493 if (ret < 0)
494 return ret;
495 break;
496 case MAX77843_MUIC_ADC_SEND_END_BUTTON:
497 case MAX77843_MUIC_ADC_REMOTE_S1_BUTTON:
498 case MAX77843_MUIC_ADC_REMOTE_S2_BUTTON:
499 case MAX77843_MUIC_ADC_REMOTE_S3_BUTTON:
500 case MAX77843_MUIC_ADC_REMOTE_S4_BUTTON:
501 case MAX77843_MUIC_ADC_REMOTE_S5_BUTTON:
502 case MAX77843_MUIC_ADC_REMOTE_S6_BUTTON:
503 case MAX77843_MUIC_ADC_REMOTE_S7_BUTTON:
504 case MAX77843_MUIC_ADC_REMOTE_S8_BUTTON:
505 case MAX77843_MUIC_ADC_REMOTE_S9_BUTTON:
506 case MAX77843_MUIC_ADC_REMOTE_S10_BUTTON:
507 case MAX77843_MUIC_ADC_REMOTE_S11_BUTTON:
508 case MAX77843_MUIC_ADC_REMOTE_S12_BUTTON:
509 case MAX77843_MUIC_ADC_RESERVED_ACC_1:
510 case MAX77843_MUIC_ADC_RESERVED_ACC_2:
27a28d32
JK		 511 case MAX77843_MUIC_ADC_RESERVED_ACC_4:
512 case MAX77843_MUIC_ADC_RESERVED_ACC_5:
513 case MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE2:
514 case MAX77843_MUIC_ADC_PHONE_POWERED_DEV:
515 case MAX77843_MUIC_ADC_TTY_CONVERTER:
516 case MAX77843_MUIC_ADC_UART_CABLE:
517 case MAX77843_MUIC_ADC_CEA936A_TYPE1_CHG:
518 case MAX77843_MUIC_ADC_AV_CABLE_NOLOAD:
519 case MAX77843_MUIC_ADC_CEA936A_TYPE2_CHG:
520 case MAX77843_MUIC_ADC_FACTORY_MODE_UART_ON:
521 case MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE1:
522 case MAX77843_MUIC_ADC_OPEN:
523 dev_err(info->dev,
524 "accessory is %s but it isn't used (adc:0x%x)\n",
525 attached ? "attached" : "detached", cable_type);
526 return -EAGAIN;
527 default:
528 dev_err(info->dev,
529 "failed to detect %s accessory (adc:0x%x)\n",
530 attached ? "attached" : "detached", cable_type);
531 return -EINVAL;
532 }
533
534 return 0;
535}
536
537static int max77843_muic_chg_handler(struct max77843_muic_info *info)
538{
539 int ret, chg_type, gnd_type;
540 bool attached;
541
542 chg_type = max77843_muic_get_cable_type(info,
543 MAX77843_CABLE_GROUP_CHG, &attached);
544
545 dev_dbg(info->dev,
546 "external connector is %s(chg_type:0x%x, prev_chg_type:0x%x)\n",
547 attached ? "attached" : "detached",
548 chg_type, info->prev_chg_type);
549
550 switch (chg_type) {
551 case MAX77843_MUIC_CHG_USB:
309a3e00
KK		 552 ret = max77843_muic_set_path(info,
553 MAX77843_MUIC_CONTROL1_SW_USB,
4a4a8714 554 attached, false);
27a28d32
JK		 555 if (ret < 0)
556 return ret;
557
8670b459
CC		 558 extcon_set_state_sync(info->edev, EXTCON_USB, attached);
559 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SDP,
8b45b6a0 560 attached);
27a28d32
JK		 561 break;
562 case MAX77843_MUIC_CHG_DOWNSTREAM:
309a3e00
KK		 563 ret = max77843_muic_set_path(info,
564 MAX77843_MUIC_CONTROL1_SW_OPEN,
4a4a8714 565 attached, false);
27a28d32
JK		 566 if (ret < 0)
567 return ret;
568
8670b459 569 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_CDP,
2a9de9c0 570 attached);
27a28d32
JK		 571 break;
572 case MAX77843_MUIC_CHG_DEDICATED:
309a3e00
KK		 573 ret = max77843_muic_set_path(info,
574 MAX77843_MUIC_CONTROL1_SW_OPEN,
4a4a8714 575 attached, false);
27a28d32
JK		 576 if (ret < 0)
577 return ret;
578
8670b459 579 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
11eecf91 580 attached);
27a28d32
JK		 581 break;
582 case MAX77843_MUIC_CHG_SPECIAL_500MA:
309a3e00
KK		 583 ret = max77843_muic_set_path(info,
584 MAX77843_MUIC_CONTROL1_SW_OPEN,
4a4a8714 585 attached, false);
27a28d32
JK		 586 if (ret < 0)
587 return ret;
588
8670b459 589 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_SLOW,
2a9de9c0 590 attached);
27a28d32
JK		 591 break;
592 case MAX77843_MUIC_CHG_SPECIAL_1A:
309a3e00
KK		 593 ret = max77843_muic_set_path(info,
594 MAX77843_MUIC_CONTROL1_SW_OPEN,
4a4a8714 595 attached, false);
27a28d32
JK		 596 if (ret < 0)
597 return ret;
598
8670b459 599 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_FAST,
2a9de9c0 600 attached);
27a28d32
JK		 601 break;
602 case MAX77843_MUIC_CHG_GND:
603 gnd_type = max77843_muic_get_cable_type(info,
604 MAX77843_CABLE_GROUP_ADC_GND, &attached);
605
606 /* Charger cable on MHL accessory is attach or detach */
607 if (gnd_type == MAX77843_MUIC_GND_MHL_VB)
8670b459 608 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
11eecf91 609 true);
27a28d32 610 else if (gnd_type == MAX77843_MUIC_GND_MHL)
8670b459 611 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP,
11eecf91 612 false);
27a28d32 613 break;
4a4a8714
MS		 614 case MAX77843_MUIC_CHG_DOCK:
615 extcon_set_state_sync(info->edev, EXTCON_CHG_USB_DCP, attached);
616 break;
27a28d32
JK		 617 case MAX77843_MUIC_CHG_NONE:
618 break;
619 default:
620 dev_err(info->dev,
621 "failed to detect %s accessory (chg_type:0x%x)\n",
622 attached ? "attached" : "detached", chg_type);
623
309a3e00 624 max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_OPEN,
4a4a8714 625 attached, false);
27a28d32
JK		 626 return -EINVAL;
627 }
628
629 return 0;
630}
631
632static void max77843_muic_irq_work(struct work_struct *work)
633{
634 struct max77843_muic_info *info = container_of(work,
635 struct max77843_muic_info, irq_work);
bc1aadc1 636 struct max77693_dev *max77843 = info->max77843;
27a28d32
JK		 637 int ret = 0;
638
639 mutex_lock(&info->mutex);
640
641 ret = regmap_bulk_read(max77843->regmap_muic,
642 MAX77843_MUIC_REG_STATUS1, info->status,
643 MAX77843_MUIC_STATUS_NUM);
644 if (ret) {
645 dev_err(info->dev, "Cannot read STATUS registers\n");
646 mutex_unlock(&info->mutex);
647 return;
648 }
649
650 if (info->irq_adc) {
651 ret = max77843_muic_adc_handler(info);
652 if (ret)
653 dev_err(info->dev, "Unknown cable type\n");
654 info->irq_adc = false;
655 }
656
657 if (info->irq_chg) {
658 ret = max77843_muic_chg_handler(info);
659 if (ret)
660 dev_err(info->dev, "Unknown charger type\n");
661 info->irq_chg = false;
662 }
663
664 mutex_unlock(&info->mutex);
665}
666
667static irqreturn_t max77843_muic_irq_handler(int irq, void *data)
668{
669 struct max77843_muic_info *info = data;
670 int i, irq_type = -1;
671
672 for (i = 0; i < ARRAY_SIZE(max77843_muic_irqs); i++)
673 if (irq == max77843_muic_irqs[i].virq)
674 irq_type = max77843_muic_irqs[i].irq;
675
676 switch (irq_type) {
677 case MAX77843_MUIC_IRQ_INT1_ADC:
678 case MAX77843_MUIC_IRQ_INT1_ADCERROR:
679 case MAX77843_MUIC_IRQ_INT1_ADC1K:
680 info->irq_adc = true;
681 break;
682 case MAX77843_MUIC_IRQ_INT2_CHGTYP:
683 case MAX77843_MUIC_IRQ_INT2_CHGDETRUN:
684 case MAX77843_MUIC_IRQ_INT2_DCDTMR:
685 case MAX77843_MUIC_IRQ_INT2_DXOVP:
686 case MAX77843_MUIC_IRQ_INT2_VBVOLT:
687 info->irq_chg = true;
688 break;
689 case MAX77843_MUIC_IRQ_INT3_VBADC:
690 case MAX77843_MUIC_IRQ_INT3_VDNMON:
691 case MAX77843_MUIC_IRQ_INT3_DNRES:
692 case MAX77843_MUIC_IRQ_INT3_MPNACK:
693 case MAX77843_MUIC_IRQ_INT3_MRXBUFOW:
694 case MAX77843_MUIC_IRQ_INT3_MRXTRF:
695 case MAX77843_MUIC_IRQ_INT3_MRXPERR:
696 case MAX77843_MUIC_IRQ_INT3_MRXRDY:
697 break;
698 default:
699 dev_err(info->dev, "Cannot recognize IRQ(%d)\n", irq_type);
700 break;
701 }
702
703 schedule_work(&info->irq_work);
704
705 return IRQ_HANDLED;
706}
707
708static void max77843_muic_detect_cable_wq(struct work_struct *work)
709{
710 struct max77843_muic_info *info = container_of(to_delayed_work(work),
711 struct max77843_muic_info, wq_detcable);
bc1aadc1 712 struct max77693_dev *max77843 = info->max77843;
27a28d32
JK		 713 int chg_type, adc, ret;
714 bool attached;
715
716 mutex_lock(&info->mutex);
717
718 ret = regmap_bulk_read(max77843->regmap_muic,
719 MAX77843_MUIC_REG_STATUS1, info->status,
720 MAX77843_MUIC_STATUS_NUM);
721 if (ret) {
722 dev_err(info->dev, "Cannot read STATUS registers\n");
723 goto err_cable_wq;
724 }
725
726 adc = max77843_muic_get_cable_type(info,
727 MAX77843_CABLE_GROUP_ADC, &attached);
728 if (attached && adc != MAX77843_MUIC_ADC_OPEN) {
729 ret = max77843_muic_adc_handler(info);
730 if (ret < 0) {
731 dev_err(info->dev, "Cannot detect accessory\n");
732 goto err_cable_wq;
733 }
734 }
735
736 chg_type = max77843_muic_get_cable_type(info,
737 MAX77843_CABLE_GROUP_CHG, &attached);
738 if (attached && chg_type != MAX77843_MUIC_CHG_NONE) {
739 ret = max77843_muic_chg_handler(info);
740 if (ret < 0) {
741 dev_err(info->dev, "Cannot detect charger accessory\n");
742 goto err_cable_wq;
743 }
744 }
745
746err_cable_wq:
747 mutex_unlock(&info->mutex);
748}
749
750static int max77843_muic_set_debounce_time(struct max77843_muic_info *info,
751 enum max77843_muic_adc_debounce_time time)
752{
bc1aadc1 753 struct max77693_dev *max77843 = info->max77843;
d927c590 754 int ret;
27a28d32
JK		 755
756 switch (time) {
757 case MAX77843_DEBOUNCE_TIME_5MS:
758 case MAX77843_DEBOUNCE_TIME_10MS:
759 case MAX77843_DEBOUNCE_TIME_25MS:
760 case MAX77843_DEBOUNCE_TIME_38_62MS:
761 ret = regmap_update_bits(max77843->regmap_muic,
762 MAX77843_MUIC_REG_CONTROL4,
763 MAX77843_MUIC_CONTROL4_ADCDBSET_MASK,
309a3e00 764 time << MAX77843_MUIC_CONTROL4_ADCDBSET_SHIFT);
27a28d32
JK		 765 if (ret < 0) {
766 dev_err(info->dev, "Cannot write MUIC regmap\n");
767 return ret;
768 }
769 break;
770 default:
771 dev_err(info->dev, "Invalid ADC debounce time\n");
772 return -EINVAL;
773 }
774
775 return 0;
776}
777
bc1aadc1 778static int max77843_init_muic_regmap(struct max77693_dev *max77843)
27a28d32
JK		 779{
780 int ret;
781
782 max77843->i2c_muic = i2c_new_dummy(max77843->i2c->adapter,
783 I2C_ADDR_MUIC);
784 if (!max77843->i2c_muic) {
785 dev_err(&max77843->i2c->dev,
786 "Cannot allocate I2C device for MUIC\n");
b9b518f5 787 return -ENOMEM;
27a28d32
JK		 788 }
789
790 i2c_set_clientdata(max77843->i2c_muic, max77843);
791
792 max77843->regmap_muic = devm_regmap_init_i2c(max77843->i2c_muic,
793 &max77843_muic_regmap_config);
794 if (IS_ERR(max77843->regmap_muic)) {
795 ret = PTR_ERR(max77843->regmap_muic);
796 goto err_muic_i2c;
797 }
798
799 ret = regmap_add_irq_chip(max77843->regmap_muic, max77843->irq,
800 IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED,
801 0, &max77843_muic_irq_chip, &max77843->irq_data_muic);
802 if (ret < 0) {
803 dev_err(&max77843->i2c->dev, "Cannot add MUIC IRQ chip\n");
804 goto err_muic_i2c;
805 }
806
807 return 0;
808
809err_muic_i2c:
810 i2c_unregister_device(max77843->i2c_muic);
811
812 return ret;
813}
814
815static int max77843_muic_probe(struct platform_device *pdev)
816{
bc1aadc1 817 struct max77693_dev *max77843 = dev_get_drvdata(pdev->dev.parent);
27a28d32
JK		 818 struct max77843_muic_info *info;
819 unsigned int id;
820 int i, ret;
821
822 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
823 if (!info)
824 return -ENOMEM;
825
826 info->dev = &pdev->dev;
827 info->max77843 = max77843;
828
829 platform_set_drvdata(pdev, info);
830 mutex_init(&info->mutex);
831
832 /* Initialize i2c and regmap */
833 ret = max77843_init_muic_regmap(max77843);
834 if (ret) {
835 dev_err(&pdev->dev, "Failed to init MUIC regmap\n");
836 return ret;
837 }
838
839 /* Turn off auto detection configuration */
840 ret = regmap_update_bits(max77843->regmap_muic,
841 MAX77843_MUIC_REG_CONTROL4,
842 MAX77843_MUIC_CONTROL4_USBAUTO_MASK |
843 MAX77843_MUIC_CONTROL4_FCTAUTO_MASK,
844 CONTROL4_AUTO_DISABLE);
845
846 /* Initialize extcon device */
847 info->edev = devm_extcon_dev_allocate(&pdev->dev,
848 max77843_extcon_cable);
849 if (IS_ERR(info->edev)) {
850 dev_err(&pdev->dev, "Failed to allocate memory for extcon\n");
851 ret = -ENODEV;
852 goto err_muic_irq;
853 }
854
855 ret = devm_extcon_dev_register(&pdev->dev, info->edev);
856 if (ret) {
857 dev_err(&pdev->dev, "Failed to register extcon device\n");
858 goto err_muic_irq;
859 }
860
861 /* Set ADC debounce time */
862 max77843_muic_set_debounce_time(info, MAX77843_DEBOUNCE_TIME_25MS);
863
864 /* Set initial path for UART */
4a4a8714
MS		 865 max77843_muic_set_path(info, MAX77843_MUIC_CONTROL1_SW_UART, true,
866 false);
27a28d32
JK		 867
868 /* Check revision number of MUIC device */
869 ret = regmap_read(max77843->regmap_muic, MAX77843_MUIC_REG_ID, &id);
870 if (ret < 0) {
871 dev_err(&pdev->dev, "Failed to read revision number\n");
872 goto err_muic_irq;
873 }
874 dev_info(info->dev, "MUIC device ID : 0x%x\n", id);
875
876 /* Support virtual irq domain for max77843 MUIC device */
877 INIT_WORK(&info->irq_work, max77843_muic_irq_work);
878
135d9f7d
JK		 879 /* Clear IRQ bits before request IRQs */
880 ret = regmap_bulk_read(max77843->regmap_muic,
881 MAX77843_MUIC_REG_INT1, info->status,
c4924e92 882 MAX77843_MUIC_STATUS_NUM);
135d9f7d
JK		 883 if (ret) {
884 dev_err(&pdev->dev, "Failed to Clear IRQ bits\n");
885 goto err_muic_irq;
886 }
887
27a28d32
JK		 888 for (i = 0; i < ARRAY_SIZE(max77843_muic_irqs); i++) {
889 struct max77843_muic_irq *muic_irq = &max77843_muic_irqs[i];
c05c0d54 890 int virq = 0;
27a28d32
JK		 891
892 virq = regmap_irq_get_virq(max77843->irq_data_muic,
893 muic_irq->irq);
894 if (virq <= 0) {
895 ret = -EINVAL;
896 goto err_muic_irq;
897 }
898 muic_irq->virq = virq;
899
900 ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
901 max77843_muic_irq_handler, IRQF_NO_SUSPEND,
902 muic_irq->name, info);
903 if (ret) {
904 dev_err(&pdev->dev,
905 "Failed to request irq (IRQ: %d, error: %d)\n",
906 muic_irq->irq, ret);
907 goto err_muic_irq;
908 }
909 }
910
911 /* Detect accessory after completing the initialization of platform */
912 INIT_DELAYED_WORK(&info->wq_detcable, max77843_muic_detect_cable_wq);
913 queue_delayed_work(system_power_efficient_wq,
914 &info->wq_detcable, msecs_to_jiffies(DELAY_MS_DEFAULT));
915
916 return 0;
917
918err_muic_irq:
919 regmap_del_irq_chip(max77843->irq, max77843->irq_data_muic);
920 i2c_unregister_device(max77843->i2c_muic);
921
922 return ret;
923}
924
925static int max77843_muic_remove(struct platform_device *pdev)
926{
927 struct max77843_muic_info *info = platform_get_drvdata(pdev);
bc1aadc1 928 struct max77693_dev *max77843 = info->max77843;
27a28d32
JK		 929
930 cancel_work_sync(&info->irq_work);
931 regmap_del_irq_chip(max77843->irq, max77843->irq_data_muic);
932 i2c_unregister_device(max77843->i2c_muic);
933
934 return 0;
935}
936
937static const struct platform_device_id max77843_muic_id[] = {
938 { "max77843-muic", },
939 { /* sentinel */ },
940};
941MODULE_DEVICE_TABLE(platform, max77843_muic_id);
942
943static struct platform_driver max77843_muic_driver = {
944 .driver = {
945 .name = "max77843-muic",
946 },
947 .probe = max77843_muic_probe,
948 .remove = max77843_muic_remove,
949 .id_table = max77843_muic_id,
950};
951
952static int __init max77843_muic_init(void)
953{
954 return platform_driver_register(&max77843_muic_driver);
955}
956subsys_initcall(max77843_muic_init);
957
958MODULE_DESCRIPTION("Maxim MAX77843 Extcon driver");
959MODULE_AUTHOR("Jaewon Kim <jaewon02.kim@samsung.com>");
960MODULE_LICENSE("GPL");
ubuntu-bionic-kernel mirror