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Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
[linux-2.6-block.git] / drivers / extcon / extcon-sm5502.c
CommitLineData
914b881f
CC		 1/*
2 * extcon-sm5502.c - Silicon Mitus SM5502 extcon drvier to support USB switches
3 *
4 * Copyright (c) 2014 Samsung Electronics Co., Ltd
5 * Author: Chanwoo Choi <cw00.choi@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
914b881f
CC		 11 */
12
13#include <linux/err.h>
14#include <linux/i2c.h>
914b881f
CC		 15#include <linux/interrupt.h>
16#include <linux/irqdomain.h>
17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/platform_device.h>
20#include <linux/regmap.h>
21#include <linux/slab.h>
22#include <linux/extcon.h>
ca2a07e4
CC		 23
24#include "extcon-sm5502.h"
914b881f 25
e1954452
CC		 26#define DELAY_MS_DEFAULT 17000 /* unit: millisecond */
27
914b881f
CC		 28struct muic_irq {
29 unsigned int irq;
30 const char *name;
31 unsigned int virq;
32};
33
34struct reg_data {
35 u8 reg;
36 unsigned int val;
37 bool invert;
38};
39
40struct sm5502_muic_info {
41 struct device *dev;
42 struct extcon_dev *edev;
43
44 struct i2c_client *i2c;
45 struct regmap *regmap;
46
47 struct regmap_irq_chip_data *irq_data;
48 struct muic_irq *muic_irqs;
49 unsigned int num_muic_irqs;
50 int irq;
51 bool irq_attach;
52 bool irq_detach;
53 struct work_struct irq_work;
54
55 struct reg_data *reg_data;
56 unsigned int num_reg_data;
57
58 struct mutex mutex;
e1954452
CC		 59
60 /*
61 * Use delayed workqueue to detect cable state and then
62 * notify cable state to notifiee/platform through uevent.
63 * After completing the booting of platform, the extcon provider
64 * driver should notify cable state to upper layer.
65 */
66 struct delayed_work wq_detcable;
914b881f
CC		 67};
68
69/* Default value of SM5502 register to bring up MUIC device. */
70static struct reg_data sm5502_reg_data[] = {
71 {
72 .reg = SM5502_REG_CONTROL,
73 .val = SM5502_REG_CONTROL_MASK_INT_MASK,
74 .invert = false,
75 }, {
76 .reg = SM5502_REG_INTMASK1,
77 .val = SM5502_REG_INTM1_KP_MASK
78 | SM5502_REG_INTM1_LKP_MASK
79 | SM5502_REG_INTM1_LKR_MASK,
80 .invert = true,
81 }, {
82 .reg = SM5502_REG_INTMASK2,
83 .val = SM5502_REG_INTM2_VBUS_DET_MASK
84 | SM5502_REG_INTM2_REV_ACCE_MASK
85 | SM5502_REG_INTM2_ADC_CHG_MASK
86 | SM5502_REG_INTM2_STUCK_KEY_MASK
87 | SM5502_REG_INTM2_STUCK_KEY_RCV_MASK
88 | SM5502_REG_INTM2_MHL_MASK,
89 .invert = true,
90 },
91 { }
92};
93
94/* List of detectable cables */
95enum {
96 EXTCON_CABLE_USB = 0,
97 EXTCON_CABLE_USB_HOST,
98 EXTCON_CABLE_TA,
99
100 EXTCON_CABLE_END,
101};
102
103static const char *sm5502_extcon_cable[] = {
104 [EXTCON_CABLE_USB] = "USB",
105 [EXTCON_CABLE_USB_HOST] = "USB-Host",
106 [EXTCON_CABLE_TA] = "TA",
107 NULL,
108};
109
110/* Define supported accessory type */
111enum sm5502_muic_acc_type {
112 SM5502_MUIC_ADC_GROUND = 0x0,
113 SM5502_MUIC_ADC_SEND_END_BUTTON,
114 SM5502_MUIC_ADC_REMOTE_S1_BUTTON,
115 SM5502_MUIC_ADC_REMOTE_S2_BUTTON,
116 SM5502_MUIC_ADC_REMOTE_S3_BUTTON,
117 SM5502_MUIC_ADC_REMOTE_S4_BUTTON,
118 SM5502_MUIC_ADC_REMOTE_S5_BUTTON,
119 SM5502_MUIC_ADC_REMOTE_S6_BUTTON,
120 SM5502_MUIC_ADC_REMOTE_S7_BUTTON,
121 SM5502_MUIC_ADC_REMOTE_S8_BUTTON,
122 SM5502_MUIC_ADC_REMOTE_S9_BUTTON,
123 SM5502_MUIC_ADC_REMOTE_S10_BUTTON,
124 SM5502_MUIC_ADC_REMOTE_S11_BUTTON,
125 SM5502_MUIC_ADC_REMOTE_S12_BUTTON,
126 SM5502_MUIC_ADC_RESERVED_ACC_1,
127 SM5502_MUIC_ADC_RESERVED_ACC_2,
128 SM5502_MUIC_ADC_RESERVED_ACC_3,
129 SM5502_MUIC_ADC_RESERVED_ACC_4,
130 SM5502_MUIC_ADC_RESERVED_ACC_5,
131 SM5502_MUIC_ADC_AUDIO_TYPE2,
132 SM5502_MUIC_ADC_PHONE_POWERED_DEV,
133 SM5502_MUIC_ADC_TTY_CONVERTER,
134 SM5502_MUIC_ADC_UART_CABLE,
135 SM5502_MUIC_ADC_TYPE1_CHARGER,
136 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB,
137 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB,
138 SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE,
139 SM5502_MUIC_ADC_TYPE2_CHARGER,
140 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART,
141 SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART,
142 SM5502_MUIC_ADC_AUDIO_TYPE1,
143 SM5502_MUIC_ADC_OPEN = 0x1f,
144
145 /* The below accessories have same ADC value (0x1f or 0x1e).
146 So, Device type1 is used to separate specific accessory. */
147 /* |---------|--ADC| */
148 /* | [7:5]|[4:0]| */
149 SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */
150 SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END = 0x5e, /* | 010|11110| */
151 /* |Dev Type1|--ADC| */
152 SM5502_MUIC_ADC_OPEN_USB = 0x5f, /* | 010|11111| */
153 SM5502_MUIC_ADC_OPEN_TA = 0xdf, /* | 110|11111| */
154 SM5502_MUIC_ADC_OPEN_USB_OTG = 0xff, /* | 111|11111| */
155};
156
157/* List of supported interrupt for SM5502 */
158static struct muic_irq sm5502_muic_irqs[] = {
159 { SM5502_IRQ_INT1_ATTACH, "muic-attach" },
160 { SM5502_IRQ_INT1_DETACH, "muic-detach" },
161 { SM5502_IRQ_INT1_KP, "muic-kp" },
162 { SM5502_IRQ_INT1_LKP, "muic-lkp" },
163 { SM5502_IRQ_INT1_LKR, "muic-lkr" },
164 { SM5502_IRQ_INT1_OVP_EVENT, "muic-ovp-event" },
165 { SM5502_IRQ_INT1_OCP_EVENT, "muic-ocp-event" },
166 { SM5502_IRQ_INT1_OVP_OCP_DIS, "muic-ovp-ocp-dis" },
167 { SM5502_IRQ_INT2_VBUS_DET, "muic-vbus-det" },
168 { SM5502_IRQ_INT2_REV_ACCE, "muic-rev-acce" },
169 { SM5502_IRQ_INT2_ADC_CHG, "muic-adc-chg" },
170 { SM5502_IRQ_INT2_STUCK_KEY, "muic-stuck-key" },
171 { SM5502_IRQ_INT2_STUCK_KEY_RCV, "muic-stuck-key-rcv" },
172 { SM5502_IRQ_INT2_MHL, "muic-mhl" },
173};
174
175/* Define interrupt list of SM5502 to register regmap_irq */
176static const struct regmap_irq sm5502_irqs[] = {
177 /* INT1 interrupts */
178 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_ATTACH_MASK, },
179 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_DETACH_MASK, },
180 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_KP_MASK, },
181 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKP_MASK, },
182 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_LKR_MASK, },
183 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_EVENT_MASK, },
184 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OCP_EVENT_MASK, },
185 { .reg_offset = 0, .mask = SM5502_IRQ_INT1_OVP_OCP_DIS_MASK, },
186
187 /* INT2 interrupts */
188 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_VBUS_DET_MASK,},
189 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_REV_ACCE_MASK, },
190 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_ADC_CHG_MASK, },
191 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_MASK, },
192 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_STUCK_KEY_RCV_MASK, },
193 { .reg_offset = 1, .mask = SM5502_IRQ_INT2_MHL_MASK, },
194};
195
196static const struct regmap_irq_chip sm5502_muic_irq_chip = {
197 .name = "sm5502",
198 .status_base = SM5502_REG_INT1,
199 .mask_base = SM5502_REG_INTMASK1,
200 .mask_invert = false,
201 .num_regs = 2,
202 .irqs = sm5502_irqs,
203 .num_irqs = ARRAY_SIZE(sm5502_irqs),
204};
205
206/* Define regmap configuration of SM5502 for I2C communication */
207static bool sm5502_muic_volatile_reg(struct device *dev, unsigned int reg)
208{
209 switch (reg) {
210 case SM5502_REG_INTMASK1:
211 case SM5502_REG_INTMASK2:
212 return true;
213 default:
214 break;
215 }
216 return false;
217}
218
219static const struct regmap_config sm5502_muic_regmap_config = {
220 .reg_bits = 8,
221 .val_bits = 8,
222 .volatile_reg = sm5502_muic_volatile_reg,
223 .max_register = SM5502_REG_END,
224};
225
a75fed2e
CC		 226/* Change DM_CON/DP_CON/VBUSIN switch according to cable type */
227static int sm5502_muic_set_path(struct sm5502_muic_info *info,
228 unsigned int con_sw, unsigned int vbus_sw,
229 bool attached)
230{
231 int ret;
232
233 if (!attached) {
234 con_sw = DM_DP_SWITCH_OPEN;
235 vbus_sw = VBUSIN_SWITCH_OPEN;
236 }
237
238 switch (con_sw) {
239 case DM_DP_SWITCH_OPEN:
240 case DM_DP_SWITCH_USB:
241 case DM_DP_SWITCH_AUDIO:
242 case DM_DP_SWITCH_UART:
243 ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
244 SM5502_REG_MANUAL_SW1_DP_MASK |
245 SM5502_REG_MANUAL_SW1_DM_MASK,
246 con_sw);
247 if (ret < 0) {
248 dev_err(info->dev,
249 "cannot update DM_CON/DP_CON switch\n");
250 return ret;
251 }
252 break;
253 default:
254 dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n",
255 con_sw);
256 return -EINVAL;
257 };
258
259 switch (vbus_sw) {
260 case VBUSIN_SWITCH_OPEN:
261 case VBUSIN_SWITCH_VBUSOUT:
262 case VBUSIN_SWITCH_MIC:
263 case VBUSIN_SWITCH_VBUSOUT_WITH_USB:
264 ret = regmap_update_bits(info->regmap, SM5502_REG_MANUAL_SW1,
265 SM5502_REG_MANUAL_SW1_VBUSIN_MASK,
266 vbus_sw);
267 if (ret < 0) {
268 dev_err(info->dev,
269 "cannot update VBUSIN switch\n");
270 return ret;
271 }
272 break;
273 default:
274 dev_err(info->dev, "Unknown VBUS switch type (%d)\n", vbus_sw);
275 return -EINVAL;
276 };
277
278 return 0;
279}
280
914b881f
CC		 281/* Return cable type of attached or detached accessories */
282static unsigned int sm5502_muic_get_cable_type(struct sm5502_muic_info *info)
283{
284 unsigned int cable_type = -1, adc, dev_type1;
285 int ret;
286
287 /* Read ADC value according to external cable or button */
288 ret = regmap_read(info->regmap, SM5502_REG_ADC, &adc);
289 if (ret) {
290 dev_err(info->dev, "failed to read ADC register\n");
291 return ret;
292 }
293
294 /*
295 * If ADC is SM5502_MUIC_ADC_GROUND(0x0), external cable hasn't
296 * connected with to MUIC device.
297 */
0ccc7955 298 cable_type = adc & SM5502_REG_ADC_MASK;
914b881f
CC		 299 if (cable_type == SM5502_MUIC_ADC_GROUND)
300 return SM5502_MUIC_ADC_GROUND;
301
302 switch (cable_type) {
303 case SM5502_MUIC_ADC_GROUND:
304 case SM5502_MUIC_ADC_SEND_END_BUTTON:
305 case SM5502_MUIC_ADC_REMOTE_S1_BUTTON:
306 case SM5502_MUIC_ADC_REMOTE_S2_BUTTON:
307 case SM5502_MUIC_ADC_REMOTE_S3_BUTTON:
308 case SM5502_MUIC_ADC_REMOTE_S4_BUTTON:
309 case SM5502_MUIC_ADC_REMOTE_S5_BUTTON:
310 case SM5502_MUIC_ADC_REMOTE_S6_BUTTON:
311 case SM5502_MUIC_ADC_REMOTE_S7_BUTTON:
312 case SM5502_MUIC_ADC_REMOTE_S8_BUTTON:
313 case SM5502_MUIC_ADC_REMOTE_S9_BUTTON:
314 case SM5502_MUIC_ADC_REMOTE_S10_BUTTON:
315 case SM5502_MUIC_ADC_REMOTE_S11_BUTTON:
316 case SM5502_MUIC_ADC_REMOTE_S12_BUTTON:
317 case SM5502_MUIC_ADC_RESERVED_ACC_1:
318 case SM5502_MUIC_ADC_RESERVED_ACC_2:
319 case SM5502_MUIC_ADC_RESERVED_ACC_3:
320 case SM5502_MUIC_ADC_RESERVED_ACC_4:
321 case SM5502_MUIC_ADC_RESERVED_ACC_5:
322 case SM5502_MUIC_ADC_AUDIO_TYPE2:
323 case SM5502_MUIC_ADC_PHONE_POWERED_DEV:
324 case SM5502_MUIC_ADC_TTY_CONVERTER:
325 case SM5502_MUIC_ADC_UART_CABLE:
326 case SM5502_MUIC_ADC_TYPE1_CHARGER:
327 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB:
328 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB:
329 case SM5502_MUIC_ADC_AUDIO_VIDEO_CABLE:
330 case SM5502_MUIC_ADC_TYPE2_CHARGER:
331 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART:
332 case SM5502_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART:
333 break;
334 case SM5502_MUIC_ADC_AUDIO_TYPE1:
335 /*
336 * Check whether cable type is
337 * SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE
338 * or SM5502_MUIC_ADC_AUDIO_TYPE1_SEND_END
339 * by using Button event.
340 */
341 break;
342 case SM5502_MUIC_ADC_OPEN:
343 ret = regmap_read(info->regmap, SM5502_REG_DEV_TYPE1,
344 &dev_type1);
345 if (ret) {
346 dev_err(info->dev, "failed to read DEV_TYPE1 reg\n");
347 return ret;
348 }
349
350 switch (dev_type1) {
351 case SM5502_REG_DEV_TYPE1_USB_SDP_MASK:
352 cable_type = SM5502_MUIC_ADC_OPEN_USB;
353 break;
354 case SM5502_REG_DEV_TYPE1_DEDICATED_CHG_MASK:
355 cable_type = SM5502_MUIC_ADC_OPEN_TA;
356 break;
357 case SM5502_REG_DEV_TYPE1_USB_OTG_MASK:
358 cable_type = SM5502_MUIC_ADC_OPEN_USB_OTG;
359 break;
360 default:
361 dev_dbg(info->dev,
362 "cannot identify the cable type: adc(0x%x) "
363 "dev_type1(0x%x)\n", adc, dev_type1);
364 return -EINVAL;
365 };
366 break;
367 default:
368 dev_err(info->dev,
369 "failed to identify the cable type: adc(0x%x)\n", adc);
370 return -EINVAL;
371 };
372
373 return cable_type;
374}
375
376static int sm5502_muic_cable_handler(struct sm5502_muic_info *info,
377 bool attached)
378{
379 static unsigned int prev_cable_type = SM5502_MUIC_ADC_GROUND;
380 const char **cable_names = info->edev->supported_cable;
381 unsigned int cable_type = SM5502_MUIC_ADC_GROUND;
a75fed2e
CC		 382 unsigned int con_sw = DM_DP_SWITCH_OPEN;
383 unsigned int vbus_sw = VBUSIN_SWITCH_OPEN;
914b881f 384 unsigned int idx = 0;
a75fed2e 385 int ret;
914b881f
CC		 386
387 if (!cable_names)
388 return 0;
389
390 /* Get the type of attached or detached cable */
391 if (attached)
392 cable_type = sm5502_muic_get_cable_type(info);
fbae30d8 393 else
914b881f
CC		 394 cable_type = prev_cable_type;
395 prev_cable_type = cable_type;
396
397 switch (cable_type) {
398 case SM5502_MUIC_ADC_OPEN_USB:
a75fed2e
CC		 399 idx = EXTCON_CABLE_USB;
400 con_sw = DM_DP_SWITCH_USB;
401 vbus_sw = VBUSIN_SWITCH_VBUSOUT_WITH_USB;
914b881f
CC		 402 break;
403 case SM5502_MUIC_ADC_OPEN_TA:
a75fed2e
CC		 404 idx = EXTCON_CABLE_TA;
405 con_sw = DM_DP_SWITCH_OPEN;
406 vbus_sw = VBUSIN_SWITCH_VBUSOUT;
914b881f
CC		 407 break;
408 case SM5502_MUIC_ADC_OPEN_USB_OTG:
a75fed2e
CC		 409 idx = EXTCON_CABLE_USB_HOST;
410 con_sw = DM_DP_SWITCH_USB;
411 vbus_sw = VBUSIN_SWITCH_OPEN;
e1954452 412 break;
914b881f
CC		 413 default:
414 dev_dbg(info->dev,
415 "cannot handle this cable_type (0x%x)\n", cable_type);
416 return 0;
417 };
418
a75fed2e
CC		 419 /* Change internal hardware path(DM_CON/DP_CON, VBUSIN) */
420 ret = sm5502_muic_set_path(info, con_sw, vbus_sw, attached);
421 if (ret < 0)
422 return ret;
423
424 /* Change the state of external accessory */
914b881f
CC		 425 extcon_set_cable_state(info->edev, cable_names[idx], attached);
426
427 return 0;
428}
429
430static void sm5502_muic_irq_work(struct work_struct *work)
431{
432 struct sm5502_muic_info *info = container_of(work,
433 struct sm5502_muic_info, irq_work);
434 int ret = 0;
435
436 if (!info->edev)
437 return;
438
439 mutex_lock(&info->mutex);
440
441 /* Detect attached or detached cables */
442 if (info->irq_attach) {
443 ret = sm5502_muic_cable_handler(info, true);
444 info->irq_attach = false;
445 }
446 if (info->irq_detach) {
447 ret = sm5502_muic_cable_handler(info, false);
448 info->irq_detach = false;
449 }
450
451 if (ret < 0)
452 dev_err(info->dev, "failed to handle MUIC interrupt\n");
453
454 mutex_unlock(&info->mutex);
914b881f
CC		 455}
456
457/*
458 * Sets irq_attach or irq_detach in sm5502_muic_info and returns 0.
459 * Returns -ESRCH if irq_type does not match registered IRQ for this dev type.
460 */
461static int sm5502_parse_irq(struct sm5502_muic_info *info, int irq_type)
462{
463 switch (irq_type) {
464 case SM5502_IRQ_INT1_ATTACH:
465 info->irq_attach = true;
466 break;
467 case SM5502_IRQ_INT1_DETACH:
468 info->irq_detach = true;
469 break;
470 case SM5502_IRQ_INT1_KP:
471 case SM5502_IRQ_INT1_LKP:
472 case SM5502_IRQ_INT1_LKR:
473 case SM5502_IRQ_INT1_OVP_EVENT:
474 case SM5502_IRQ_INT1_OCP_EVENT:
475 case SM5502_IRQ_INT1_OVP_OCP_DIS:
476 case SM5502_IRQ_INT2_VBUS_DET:
477 case SM5502_IRQ_INT2_REV_ACCE:
478 case SM5502_IRQ_INT2_ADC_CHG:
479 case SM5502_IRQ_INT2_STUCK_KEY:
480 case SM5502_IRQ_INT2_STUCK_KEY_RCV:
481 case SM5502_IRQ_INT2_MHL:
482 default:
483 break;
484 }
485
486 return 0;
487}
488
489static irqreturn_t sm5502_muic_irq_handler(int irq, void *data)
490{
491 struct sm5502_muic_info *info = data;
492 int i, irq_type = -1, ret;
493
494 for (i = 0; i < info->num_muic_irqs; i++)
495 if (irq == info->muic_irqs[i].virq)
496 irq_type = info->muic_irqs[i].irq;
497
498 ret = sm5502_parse_irq(info, irq_type);
499 if (ret < 0) {
500 dev_warn(info->dev, "cannot handle is interrupt:%d\n",
501 irq_type);
502 return IRQ_HANDLED;
503 }
504 schedule_work(&info->irq_work);
505
506 return IRQ_HANDLED;
507}
508
e1954452
CC		 509static void sm5502_muic_detect_cable_wq(struct work_struct *work)
510{
511 struct sm5502_muic_info *info = container_of(to_delayed_work(work),
512 struct sm5502_muic_info, wq_detcable);
513 int ret;
514
515 /* Notify the state of connector cable or not */
516 ret = sm5502_muic_cable_handler(info, true);
517 if (ret < 0)
518 dev_warn(info->dev, "failed to detect cable state\n");
519}
520
914b881f
CC		 521static void sm5502_init_dev_type(struct sm5502_muic_info *info)
522{
523 unsigned int reg_data, vendor_id, version_id;
524 int i, ret;
525
526 /* To test I2C, Print version_id and vendor_id of SM5502 */
527 ret = regmap_read(info->regmap, SM5502_REG_DEVICE_ID, &reg_data);
528 if (ret) {
529 dev_err(info->dev,
530 "failed to read DEVICE_ID register: %d\n", ret);
531 return;
532 }
533
534 vendor_id = ((reg_data & SM5502_REG_DEVICE_ID_VENDOR_MASK) >>
535 SM5502_REG_DEVICE_ID_VENDOR_SHIFT);
536 version_id = ((reg_data & SM5502_REG_DEVICE_ID_VERSION_MASK) >>
537 SM5502_REG_DEVICE_ID_VERSION_SHIFT);
538
539 dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
540 version_id, vendor_id);
541
542 /* Initiazle the register of SM5502 device to bring-up */
543 for (i = 0; i < info->num_reg_data; i++) {
544 unsigned int val = 0;
545
546 if (!info->reg_data[i].invert)
547 val |= ~info->reg_data[i].val;
548 else
549 val = info->reg_data[i].val;
550 regmap_write(info->regmap, info->reg_data[i].reg, val);
551 }
552}
553
554static int sm5022_muic_i2c_probe(struct i2c_client *i2c,
555 const struct i2c_device_id *id)
556{
557 struct device_node *np = i2c->dev.of_node;
558 struct sm5502_muic_info *info;
559 int i, ret, irq_flags;
560
561 if (!np)
562 return -EINVAL;
563
564 info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
565 if (!info)
566 return -ENOMEM;
567 i2c_set_clientdata(i2c, info);
568
569 info->dev = &i2c->dev;
570 info->i2c = i2c;
571 info->irq = i2c->irq;
572 info->muic_irqs = sm5502_muic_irqs;
573 info->num_muic_irqs = ARRAY_SIZE(sm5502_muic_irqs);
574 info->reg_data = sm5502_reg_data;
575 info->num_reg_data = ARRAY_SIZE(sm5502_reg_data);
576
577 mutex_init(&info->mutex);
578
579 INIT_WORK(&info->irq_work, sm5502_muic_irq_work);
580
581 info->regmap = devm_regmap_init_i2c(i2c, &sm5502_muic_regmap_config);
582 if (IS_ERR(info->regmap)) {
583 ret = PTR_ERR(info->regmap);
584 dev_err(info->dev, "failed to allocate register map: %d\n",
585 ret);
586 return ret;
587 }
588
589 /* Support irq domain for SM5502 MUIC device */
590 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
591 ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0,
592 &sm5502_muic_irq_chip, &info->irq_data);
593 if (ret != 0) {
594 dev_err(info->dev, "failed to request IRQ %d: %d\n",
595 info->irq, ret);
596 return ret;
597 }
598
599 for (i = 0; i < info->num_muic_irqs; i++) {
600 struct muic_irq *muic_irq = &info->muic_irqs[i];
601 unsigned int virq = 0;
602
603 virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
604 if (virq <= 0)
605 return -EINVAL;
606 muic_irq->virq = virq;
607
608 ret = devm_request_threaded_irq(info->dev, virq, NULL,
609 sm5502_muic_irq_handler,
610 IRQF_NO_SUSPEND,
611 muic_irq->name, info);
612 if (ret) {
fbae30d8
CC		 613 dev_err(info->dev,
614 "failed: irq request (IRQ: %d, error :%d)\n",
615 muic_irq->irq, ret);
914b881f
CC		 616 return ret;
617 }
618 }
619
620 /* Allocate extcon device */
621 info->edev = devm_extcon_dev_allocate(info->dev, sm5502_extcon_cable);
622 if (IS_ERR(info->edev)) {
623 dev_err(info->dev, "failed to allocate memory for extcon\n");
624 return -ENOMEM;
625 }
626 info->edev->name = np->name;
627
628 /* Register extcon device */
629 ret = devm_extcon_dev_register(info->dev, info->edev);
630 if (ret) {
631 dev_err(info->dev, "failed to register extcon device\n");
632 return ret;
633 }
634
e1954452
CC		 635 /*
636 * Detect accessory after completing the initialization of platform
637 *
638 * - Use delayed workqueue to detect cable state and then
639 * notify cable state to notifiee/platform through uevent.
640 * After completing the booting of platform, the extcon provider
641 * driver should notify cable state to upper layer.
642 */
643 INIT_DELAYED_WORK(&info->wq_detcable, sm5502_muic_detect_cable_wq);
644 queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
645 msecs_to_jiffies(DELAY_MS_DEFAULT));
646
914b881f
CC		 647 /* Initialize SM5502 device and print vendor id and version id */
648 sm5502_init_dev_type(info);
649
650 return 0;
651}
652
653static int sm5502_muic_i2c_remove(struct i2c_client *i2c)
654{
655 struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
656
657 regmap_del_irq_chip(info->irq, info->irq_data);
658
659 return 0;
660}
661
662static struct of_device_id sm5502_dt_match[] = {
663 { .compatible = "siliconmitus,sm5502-muic" },
664 { },
665};
666
667#ifdef CONFIG_PM_SLEEP
668static int sm5502_muic_suspend(struct device *dev)
669{
670 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
671 struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
672
673 enable_irq_wake(info->irq);
674
675 return 0;
676}
677
678static int sm5502_muic_resume(struct device *dev)
679{
680 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
681 struct sm5502_muic_info *info = i2c_get_clientdata(i2c);
682
683 disable_irq_wake(info->irq);
684
685 return 0;
686}
687#endif
688
689static SIMPLE_DEV_PM_OPS(sm5502_muic_pm_ops,
690 sm5502_muic_suspend, sm5502_muic_resume);
691
692static const struct i2c_device_id sm5502_i2c_id[] = {
693 { "sm5502", TYPE_SM5502 },
694 { }
695};
696MODULE_DEVICE_TABLE(i2c, sm5502_i2c_id);
697
698static struct i2c_driver sm5502_muic_i2c_driver = {
699 .driver = {
700 .name = "sm5502",
701 .owner = THIS_MODULE,
702 .pm = &sm5502_muic_pm_ops,
703 .of_match_table = sm5502_dt_match,
704 },
705 .probe = sm5022_muic_i2c_probe,
706 .remove = sm5502_muic_i2c_remove,
707 .id_table = sm5502_i2c_id,
708};
709
710static int __init sm5502_muic_i2c_init(void)
711{
712 return i2c_add_driver(&sm5502_muic_i2c_driver);
713}
714subsys_initcall(sm5502_muic_i2c_init);
715
716MODULE_DESCRIPTION("Silicon Mitus SM5502 Extcon driver");
717MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
718MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)