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13#include <linux/err.h>
14#include <linux/i2c.h>
15#include <linux/input.h>
16#include <linux/interrupt.h>
17#include <linux/irqdomain.h>
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <linux/regmap.h>
22#include <linux/slab.h>
23#include <linux/extcon.h>
24
25#include "extcon-rt8973a.h"
26
27#define DELAY_MS_DEFAULT 20000
28
29struct muic_irq {
30 unsigned int irq;
31 const char *name;
32 unsigned int virq;
33};
34
35struct reg_data {
36 u8 reg;
37 u8 mask;
38 u8 val;
39 bool invert;
40};
41
42struct rt8973a_muic_info {
43 struct device *dev;
44 struct extcon_dev *edev;
45
46 struct i2c_client *i2c;
47 struct regmap *regmap;
48
49 struct regmap_irq_chip_data *irq_data;
50 struct muic_irq *muic_irqs;
51 unsigned int num_muic_irqs;
52 int irq;
53 bool irq_attach;
54 bool irq_detach;
55 bool irq_ovp;
56 bool irq_otp;
57 struct work_struct irq_work;
58
59 struct reg_data *reg_data;
60 unsigned int num_reg_data;
61 bool auto_config;
62
63 struct mutex mutex;
64
65
66
67
68
69
70
71 struct delayed_work wq_detcable;
72};
73
74
75static struct reg_data rt8973a_reg_data[] = {
76 {
77 .reg = RT8973A_REG_CONTROL1,
78 .mask = RT8973A_REG_CONTROL1_ADC_EN_MASK
79 | RT8973A_REG_CONTROL1_USB_CHD_EN_MASK
80 | RT8973A_REG_CONTROL1_CHGTYP_MASK
81 | RT8973A_REG_CONTROL1_SWITCH_OPEN_MASK
82 | RT8973A_REG_CONTROL1_AUTO_CONFIG_MASK
83 | RT8973A_REG_CONTROL1_INTM_MASK,
84 .val = RT8973A_REG_CONTROL1_ADC_EN_MASK
85 | RT8973A_REG_CONTROL1_USB_CHD_EN_MASK
86 | RT8973A_REG_CONTROL1_CHGTYP_MASK,
87 .invert = false,
88 },
89 { }
90};
91
92
93static const unsigned int rt8973a_extcon_cable[] = {
94 EXTCON_USB,
95 EXTCON_USB_HOST,
96 EXTCON_TA,
97 EXTCON_JIG,
98 EXTCON_NONE,
99};
100
101
102enum rt8973a_event_type {
103 RT8973A_EVENT_ATTACH = 1,
104 RT8973A_EVENT_DETACH,
105 RT8973A_EVENT_OVP,
106 RT8973A_EVENT_OTP,
107};
108
109
110enum rt8973a_muic_acc_type {
111 RT8973A_MUIC_ADC_OTG = 0x0,
112 RT8973A_MUIC_ADC_AUDIO_SEND_END_BUTTON,
113 RT8973A_MUIC_ADC_AUDIO_REMOTE_S1_BUTTON,
114 RT8973A_MUIC_ADC_AUDIO_REMOTE_S2_BUTTON,
115 RT8973A_MUIC_ADC_AUDIO_REMOTE_S3_BUTTON,
116 RT8973A_MUIC_ADC_AUDIO_REMOTE_S4_BUTTON,
117 RT8973A_MUIC_ADC_AUDIO_REMOTE_S5_BUTTON,
118 RT8973A_MUIC_ADC_AUDIO_REMOTE_S6_BUTTON,
119 RT8973A_MUIC_ADC_AUDIO_REMOTE_S7_BUTTON,
120 RT8973A_MUIC_ADC_AUDIO_REMOTE_S8_BUTTON,
121 RT8973A_MUIC_ADC_AUDIO_REMOTE_S9_BUTTON,
122 RT8973A_MUIC_ADC_AUDIO_REMOTE_S10_BUTTON,
123 RT8973A_MUIC_ADC_AUDIO_REMOTE_S11_BUTTON,
124 RT8973A_MUIC_ADC_AUDIO_REMOTE_S12_BUTTON,
125 RT8973A_MUIC_ADC_RESERVED_ACC_1,
126 RT8973A_MUIC_ADC_RESERVED_ACC_2,
127 RT8973A_MUIC_ADC_RESERVED_ACC_3,
128 RT8973A_MUIC_ADC_RESERVED_ACC_4,
129 RT8973A_MUIC_ADC_RESERVED_ACC_5,
130 RT8973A_MUIC_ADC_AUDIO_TYPE2,
131 RT8973A_MUIC_ADC_PHONE_POWERED_DEV,
132 RT8973A_MUIC_ADC_UNKNOWN_ACC_1,
133 RT8973A_MUIC_ADC_UNKNOWN_ACC_2,
134 RT8973A_MUIC_ADC_TA,
135 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB,
136 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB,
137 RT8973A_MUIC_ADC_UNKNOWN_ACC_3,
138 RT8973A_MUIC_ADC_UNKNOWN_ACC_4,
139 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART,
140 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART,
141 RT8973A_MUIC_ADC_UNKNOWN_ACC_5,
142 RT8973A_MUIC_ADC_OPEN = 0x1f,
143
144
145
146
147
148 RT8973A_MUIC_ADC_USB = 0x3f,
149};
150
151
152static struct muic_irq rt8973a_muic_irqs[] = {
153 { RT8973A_INT1_ATTACH, "muic-attach" },
154 { RT8973A_INT1_DETACH, "muic-detach" },
155 { RT8973A_INT1_CHGDET, "muic-chgdet" },
156 { RT8973A_INT1_DCD_T, "muic-dcd-t" },
157 { RT8973A_INT1_OVP, "muic-ovp" },
158 { RT8973A_INT1_CONNECT, "muic-connect" },
159 { RT8973A_INT1_ADC_CHG, "muic-adc-chg" },
160 { RT8973A_INT1_OTP, "muic-otp" },
161 { RT8973A_INT2_UVLO, "muic-uvlo" },
162 { RT8973A_INT2_POR, "muic-por" },
163 { RT8973A_INT2_OTP_FET, "muic-otp-fet" },
164 { RT8973A_INT2_OVP_FET, "muic-ovp-fet" },
165 { RT8973A_INT2_OCP_LATCH, "muic-ocp-latch" },
166 { RT8973A_INT2_OCP, "muic-ocp" },
167 { RT8973A_INT2_OVP_OCP, "muic-ovp-ocp" },
168};
169
170
171static const struct regmap_irq rt8973a_irqs[] = {
172
173 { .reg_offset = 0, .mask = RT8973A_INT1_ATTACH_MASK, },
174 { .reg_offset = 0, .mask = RT8973A_INT1_DETACH_MASK, },
175 { .reg_offset = 0, .mask = RT8973A_INT1_CHGDET_MASK, },
176 { .reg_offset = 0, .mask = RT8973A_INT1_DCD_T_MASK, },
177 { .reg_offset = 0, .mask = RT8973A_INT1_OVP_MASK, },
178 { .reg_offset = 0, .mask = RT8973A_INT1_CONNECT_MASK, },
179 { .reg_offset = 0, .mask = RT8973A_INT1_ADC_CHG_MASK, },
180 { .reg_offset = 0, .mask = RT8973A_INT1_OTP_MASK, },
181
182
183 { .reg_offset = 1, .mask = RT8973A_INT2_UVLOT_MASK,},
184 { .reg_offset = 1, .mask = RT8973A_INT2_POR_MASK, },
185 { .reg_offset = 1, .mask = RT8973A_INT2_OTP_FET_MASK, },
186 { .reg_offset = 1, .mask = RT8973A_INT2_OVP_FET_MASK, },
187 { .reg_offset = 1, .mask = RT8973A_INT2_OCP_LATCH_MASK, },
188 { .reg_offset = 1, .mask = RT8973A_INT2_OCP_MASK, },
189 { .reg_offset = 1, .mask = RT8973A_INT2_OVP_OCP_MASK, },
190};
191
192static const struct regmap_irq_chip rt8973a_muic_irq_chip = {
193 .name = "rt8973a",
194 .status_base = RT8973A_REG_INT1,
195 .mask_base = RT8973A_REG_INTM1,
196 .mask_invert = false,
197 .num_regs = 2,
198 .irqs = rt8973a_irqs,
199 .num_irqs = ARRAY_SIZE(rt8973a_irqs),
200};
201
202
203static bool rt8973a_muic_volatile_reg(struct device *dev, unsigned int reg)
204{
205 switch (reg) {
206 case RT8973A_REG_INTM1:
207 case RT8973A_REG_INTM2:
208 return true;
209 default:
210 break;
211 }
212 return false;
213}
214
215static const struct regmap_config rt8973a_muic_regmap_config = {
216 .reg_bits = 8,
217 .val_bits = 8,
218 .volatile_reg = rt8973a_muic_volatile_reg,
219 .max_register = RT8973A_REG_END,
220};
221
222
223static int rt8973a_muic_set_path(struct rt8973a_muic_info *info,
224 unsigned int con_sw, bool attached)
225{
226 int ret;
227
228
229
230
231
232 if (info->auto_config)
233 return 0;
234
235 if (!attached)
236 con_sw = DM_DP_SWITCH_UART;
237
238 switch (con_sw) {
239 case DM_DP_SWITCH_OPEN:
240 case DM_DP_SWITCH_USB:
241 case DM_DP_SWITCH_UART:
242 ret = regmap_update_bits(info->regmap, RT8973A_REG_MANUAL_SW1,
243 RT8973A_REG_MANUAL_SW1_DP_MASK |
244 RT8973A_REG_MANUAL_SW1_DM_MASK,
245 con_sw);
246 if (ret < 0) {
247 dev_err(info->dev,
248 "cannot update DM_CON/DP_CON switch\n");
249 return ret;
250 }
251 break;
252 default:
253 dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n",
254 con_sw);
255 return -EINVAL;
256 }
257
258 return 0;
259}
260
261static int rt8973a_muic_get_cable_type(struct rt8973a_muic_info *info)
262{
263 unsigned int adc, dev1;
264 int ret, cable_type;
265
266
267 ret = regmap_read(info->regmap, RT8973A_REG_ADC, &adc);
268 if (ret) {
269 dev_err(info->dev, "failed to read ADC register\n");
270 return ret;
271 }
272 cable_type = adc & RT8973A_REG_ADC_MASK;
273
274
275 ret = regmap_read(info->regmap, RT8973A_REG_DEV1, &dev1);
276 if (ret) {
277 dev_err(info->dev, "failed to read DEV1 register\n");
278 return ret;
279 }
280
281 switch (adc) {
282 case RT8973A_MUIC_ADC_OPEN:
283 if (dev1 & RT8973A_REG_DEV1_USB_MASK)
284 cable_type = RT8973A_MUIC_ADC_USB;
285 else if (dev1 & RT8973A_REG_DEV1_DCPORT_MASK)
286 cable_type = RT8973A_MUIC_ADC_TA;
287 else
288 cable_type = RT8973A_MUIC_ADC_OPEN;
289 break;
290 default:
291 break;
292 }
293
294 return cable_type;
295}
296
297static int rt8973a_muic_cable_handler(struct rt8973a_muic_info *info,
298 enum rt8973a_event_type event)
299{
300 static unsigned int prev_cable_type;
301 unsigned int con_sw = DM_DP_SWITCH_UART;
302 int ret, cable_type;
303 unsigned int id;
304 bool attached = false;
305
306 switch (event) {
307 case RT8973A_EVENT_ATTACH:
308 cable_type = rt8973a_muic_get_cable_type(info);
309 attached = true;
310 break;
311 case RT8973A_EVENT_DETACH:
312 cable_type = prev_cable_type;
313 attached = false;
314 break;
315 case RT8973A_EVENT_OVP:
316 case RT8973A_EVENT_OTP:
317 dev_warn(info->dev,
318 "happen Over %s issue. Need to disconnect all cables\n",
319 event == RT8973A_EVENT_OVP ? "Voltage" : "Temperature");
320 cable_type = prev_cable_type;
321 attached = false;
322 break;
323 default:
324 dev_err(info->dev,
325 "Cannot handle this event (event:%d)\n", event);
326 return -EINVAL;
327 }
328 prev_cable_type = cable_type;
329
330 switch (cable_type) {
331 case RT8973A_MUIC_ADC_OTG:
332 id = EXTCON_USB_HOST;
333 con_sw = DM_DP_SWITCH_USB;
334 break;
335 case RT8973A_MUIC_ADC_TA:
336 id = EXTCON_TA;
337 con_sw = DM_DP_SWITCH_OPEN;
338 break;
339 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB:
340 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB:
341 id = EXTCON_JIG;
342 con_sw = DM_DP_SWITCH_USB;
343 break;
344 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART:
345 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART:
346 id = EXTCON_JIG;
347 con_sw = DM_DP_SWITCH_UART;
348 break;
349 case RT8973A_MUIC_ADC_USB:
350 id = EXTCON_USB;
351 con_sw = DM_DP_SWITCH_USB;
352 break;
353 case RT8973A_MUIC_ADC_OPEN:
354 return 0;
355 case RT8973A_MUIC_ADC_UNKNOWN_ACC_1:
356 case RT8973A_MUIC_ADC_UNKNOWN_ACC_2:
357 case RT8973A_MUIC_ADC_UNKNOWN_ACC_3:
358 case RT8973A_MUIC_ADC_UNKNOWN_ACC_4:
359 case RT8973A_MUIC_ADC_UNKNOWN_ACC_5:
360 dev_warn(info->dev,
361 "Unknown accessory type (adc:0x%x)\n", cable_type);
362 return 0;
363 case RT8973A_MUIC_ADC_AUDIO_SEND_END_BUTTON:
364 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S1_BUTTON:
365 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S2_BUTTON:
366 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S3_BUTTON:
367 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S4_BUTTON:
368 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S5_BUTTON:
369 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S6_BUTTON:
370 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S7_BUTTON:
371 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S8_BUTTON:
372 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S9_BUTTON:
373 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S10_BUTTON:
374 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S11_BUTTON:
375 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S12_BUTTON:
376 case RT8973A_MUIC_ADC_AUDIO_TYPE2:
377 dev_warn(info->dev,
378 "Audio device/button type (adc:0x%x)\n", cable_type);
379 return 0;
380 case RT8973A_MUIC_ADC_RESERVED_ACC_1:
381 case RT8973A_MUIC_ADC_RESERVED_ACC_2:
382 case RT8973A_MUIC_ADC_RESERVED_ACC_3:
383 case RT8973A_MUIC_ADC_RESERVED_ACC_4:
384 case RT8973A_MUIC_ADC_RESERVED_ACC_5:
385 case RT8973A_MUIC_ADC_PHONE_POWERED_DEV:
386 return 0;
387 default:
388 dev_err(info->dev,
389 "Cannot handle this cable_type (adc:0x%x)\n",
390 cable_type);
391 return -EINVAL;
392 }
393
394
395 ret = rt8973a_muic_set_path(info, con_sw, attached);
396 if (ret < 0)
397 return ret;
398
399
400 extcon_set_cable_state_(info->edev, id, attached);
401
402 return 0;
403}
404
405static void rt8973a_muic_irq_work(struct work_struct *work)
406{
407 struct rt8973a_muic_info *info = container_of(work,
408 struct rt8973a_muic_info, irq_work);
409 int ret = 0;
410
411 if (!info->edev)
412 return;
413
414 mutex_lock(&info->mutex);
415
416
417 if (info->irq_attach) {
418 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_ATTACH);
419 info->irq_attach = false;
420 }
421
422 if (info->irq_detach) {
423 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_DETACH);
424 info->irq_detach = false;
425 }
426
427 if (info->irq_ovp) {
428 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_OVP);
429 info->irq_ovp = false;
430 }
431
432 if (info->irq_otp) {
433 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_OTP);
434 info->irq_otp = false;
435 }
436
437 if (ret < 0)
438 dev_err(info->dev, "failed to handle MUIC interrupt\n");
439
440 mutex_unlock(&info->mutex);
441}
442
443static irqreturn_t rt8973a_muic_irq_handler(int irq, void *data)
444{
445 struct rt8973a_muic_info *info = data;
446 int i, irq_type = -1;
447
448 for (i = 0; i < info->num_muic_irqs; i++)
449 if (irq == info->muic_irqs[i].virq)
450 irq_type = info->muic_irqs[i].irq;
451
452 switch (irq_type) {
453 case RT8973A_INT1_ATTACH:
454 info->irq_attach = true;
455 break;
456 case RT8973A_INT1_DETACH:
457 info->irq_detach = true;
458 break;
459 case RT8973A_INT1_OVP:
460 info->irq_ovp = true;
461 break;
462 case RT8973A_INT1_OTP:
463 info->irq_otp = true;
464 break;
465 case RT8973A_INT1_CHGDET:
466 case RT8973A_INT1_DCD_T:
467 case RT8973A_INT1_CONNECT:
468 case RT8973A_INT1_ADC_CHG:
469 case RT8973A_INT2_UVLO:
470 case RT8973A_INT2_POR:
471 case RT8973A_INT2_OTP_FET:
472 case RT8973A_INT2_OVP_FET:
473 case RT8973A_INT2_OCP_LATCH:
474 case RT8973A_INT2_OCP:
475 case RT8973A_INT2_OVP_OCP:
476 default:
477 dev_dbg(info->dev,
478 "Cannot handle this interrupt (%d)\n", irq_type);
479 break;
480 }
481
482 schedule_work(&info->irq_work);
483
484 return IRQ_HANDLED;
485}
486
487static void rt8973a_muic_detect_cable_wq(struct work_struct *work)
488{
489 struct rt8973a_muic_info *info = container_of(to_delayed_work(work),
490 struct rt8973a_muic_info, wq_detcable);
491 int ret;
492
493
494 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_ATTACH);
495 if (ret < 0)
496 dev_warn(info->dev, "failed to detect cable state\n");
497}
498
499static void rt8973a_init_dev_type(struct rt8973a_muic_info *info)
500{
501 unsigned int data, vendor_id, version_id;
502 int i, ret;
503
504
505 ret = regmap_read(info->regmap, RT8973A_REG_DEVICE_ID, &data);
506 if (ret) {
507 dev_err(info->dev,
508 "failed to read DEVICE_ID register: %d\n", ret);
509 return;
510 }
511
512 vendor_id = ((data & RT8973A_REG_DEVICE_ID_VENDOR_MASK) >>
513 RT8973A_REG_DEVICE_ID_VENDOR_SHIFT);
514 version_id = ((data & RT8973A_REG_DEVICE_ID_VERSION_MASK) >>
515 RT8973A_REG_DEVICE_ID_VERSION_SHIFT);
516
517 dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
518 version_id, vendor_id);
519
520
521 for (i = 0; i < info->num_reg_data; i++) {
522 u8 reg = info->reg_data[i].reg;
523 u8 mask = info->reg_data[i].mask;
524 u8 val = 0;
525
526 if (info->reg_data[i].invert)
527 val = ~info->reg_data[i].val;
528 else
529 val = info->reg_data[i].val;
530
531 regmap_update_bits(info->regmap, reg, mask, val);
532 }
533
534
535 ret = regmap_read(info->regmap, RT8973A_REG_CONTROL1, &data);
536 if (ret) {
537 dev_err(info->dev,
538 "failed to read CONTROL1 register: %d\n", ret);
539 return;
540 }
541
542 data &= RT8973A_REG_CONTROL1_AUTO_CONFIG_MASK;
543 if (data) {
544 info->auto_config = true;
545 dev_info(info->dev,
546 "Enable Auto-configuration for internal path\n");
547 }
548}
549
550static int rt8973a_muic_i2c_probe(struct i2c_client *i2c,
551 const struct i2c_device_id *id)
552{
553 struct device_node *np = i2c->dev.of_node;
554 struct rt8973a_muic_info *info;
555 int i, ret, irq_flags;
556
557 if (!np)
558 return -EINVAL;
559
560 info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
561 if (!info)
562 return -ENOMEM;
563 i2c_set_clientdata(i2c, info);
564
565 info->dev = &i2c->dev;
566 info->i2c = i2c;
567 info->irq = i2c->irq;
568 info->muic_irqs = rt8973a_muic_irqs;
569 info->num_muic_irqs = ARRAY_SIZE(rt8973a_muic_irqs);
570 info->reg_data = rt8973a_reg_data;
571 info->num_reg_data = ARRAY_SIZE(rt8973a_reg_data);
572
573 mutex_init(&info->mutex);
574
575 INIT_WORK(&info->irq_work, rt8973a_muic_irq_work);
576
577 info->regmap = devm_regmap_init_i2c(i2c, &rt8973a_muic_regmap_config);
578 if (IS_ERR(info->regmap)) {
579 ret = PTR_ERR(info->regmap);
580 dev_err(info->dev, "failed to allocate register map: %d\n",
581 ret);
582 return ret;
583 }
584
585
586 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
587 ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0,
588 &rt8973a_muic_irq_chip, &info->irq_data);
589 if (ret != 0) {
590 dev_err(info->dev, "failed to add irq_chip (irq:%d, err:%d)\n",
591 info->irq, ret);
592 return ret;
593 }
594
595 for (i = 0; i < info->num_muic_irqs; i++) {
596 struct muic_irq *muic_irq = &info->muic_irqs[i];
597 unsigned int virq = 0;
598
599 virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
600 if (virq <= 0)
601 return -EINVAL;
602 muic_irq->virq = virq;
603
604 ret = devm_request_threaded_irq(info->dev, virq, NULL,
605 rt8973a_muic_irq_handler,
606 IRQF_NO_SUSPEND,
607 muic_irq->name, info);
608 if (ret) {
609 dev_err(info->dev,
610 "failed: irq request (IRQ: %d, error :%d)\n",
611 muic_irq->irq, ret);
612 return ret;
613 }
614 }
615
616
617 info->edev = devm_extcon_dev_allocate(info->dev, rt8973a_extcon_cable);
618 if (IS_ERR(info->edev)) {
619 dev_err(info->dev, "failed to allocate memory for extcon\n");
620 return -ENOMEM;
621 }
622
623
624 ret = devm_extcon_dev_register(info->dev, info->edev);
625 if (ret) {
626 dev_err(info->dev, "failed to register extcon device\n");
627 return ret;
628 }
629
630
631
632
633
634
635
636
637
638 INIT_DELAYED_WORK(&info->wq_detcable, rt8973a_muic_detect_cable_wq);
639 queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
640 msecs_to_jiffies(DELAY_MS_DEFAULT));
641
642
643 rt8973a_init_dev_type(info);
644
645 return 0;
646}
647
648static int rt8973a_muic_i2c_remove(struct i2c_client *i2c)
649{
650 struct rt8973a_muic_info *info = i2c_get_clientdata(i2c);
651
652 regmap_del_irq_chip(info->irq, info->irq_data);
653
654 return 0;
655}
656
657static const struct of_device_id rt8973a_dt_match[] = {
658 { .compatible = "richtek,rt8973a-muic" },
659 { },
660};
661
662#ifdef CONFIG_PM_SLEEP
663static int rt8973a_muic_suspend(struct device *dev)
664{
665 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
666 struct rt8973a_muic_info *info = i2c_get_clientdata(i2c);
667
668 enable_irq_wake(info->irq);
669
670 return 0;
671}
672
673static int rt8973a_muic_resume(struct device *dev)
674{
675 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
676 struct rt8973a_muic_info *info = i2c_get_clientdata(i2c);
677
678 disable_irq_wake(info->irq);
679
680 return 0;
681}
682#endif
683
684static SIMPLE_DEV_PM_OPS(rt8973a_muic_pm_ops,
685 rt8973a_muic_suspend, rt8973a_muic_resume);
686
687static const struct i2c_device_id rt8973a_i2c_id[] = {
688 { "rt8973a", TYPE_RT8973A },
689 { }
690};
691MODULE_DEVICE_TABLE(i2c, rt8973a_i2c_id);
692
693static struct i2c_driver rt8973a_muic_i2c_driver = {
694 .driver = {
695 .name = "rt8973a",
696 .owner = THIS_MODULE,
697 .pm = &rt8973a_muic_pm_ops,
698 .of_match_table = rt8973a_dt_match,
699 },
700 .probe = rt8973a_muic_i2c_probe,
701 .remove = rt8973a_muic_i2c_remove,
702 .id_table = rt8973a_i2c_id,
703};
704
705static int __init rt8973a_muic_i2c_init(void)
706{
707 return i2c_add_driver(&rt8973a_muic_i2c_driver);
708}
709subsys_initcall(rt8973a_muic_i2c_init);
710
711MODULE_DESCRIPTION("Richtek RT8973A Extcon driver");
712MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
713MODULE_LICENSE("GPL");
714
