2 * extcon-rt8973a.c - Richtek RT8973A extcon driver to support USB switches
4 * Copyright (c) 2014 Samsung Electronics Co., Ltd
5 * Author: Chanwoo Choi <cw00.choi@samsung.com>
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.
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>
25 #include "extcon-rt8973a.h"
27 #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
42 struct rt8973a_muic_info {
44 struct extcon_dev *edev;
46 struct i2c_client *i2c;
47 struct regmap *regmap;
49 struct regmap_irq_chip_data *irq_data;
50 struct muic_irq *muic_irqs;
51 unsigned int num_muic_irqs;
57 struct work_struct irq_work;
59 struct reg_data *reg_data;
60 unsigned int num_reg_data;
66 * Use delayed workqueue to detect cable state and then
67 * notify cable state to notifiee/platform through uevent.
68 * After completing the booting of platform, the extcon provider
69 * driver should notify cable state to upper layer.
71 struct delayed_work wq_detcable;
74 /* Default value of RT8973A register to bring up MUIC device. */
75 static struct reg_data rt8973a_reg_data[] = {
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,
92 /* List of detectable cables */
95 EXTCON_CABLE_USB_HOST,
97 EXTCON_CABLE_JIG_OFF_USB,
98 EXTCON_CABLE_JIG_ON_USB,
99 EXTCON_CABLE_JIG_OFF_UART,
100 EXTCON_CABLE_JIG_ON_UART,
105 static const char *rt8973a_extcon_cable[] = {
106 [EXTCON_CABLE_USB] = "USB",
107 [EXTCON_CABLE_USB_HOST] = "USB-Host",
108 [EXTCON_CABLE_TA] = "TA",
109 [EXTCON_CABLE_JIG_OFF_USB] = "JIG-USB-OFF",
110 [EXTCON_CABLE_JIG_ON_USB] = "JIG-USB-ON",
111 [EXTCON_CABLE_JIG_OFF_UART] = "JIG-UART-OFF",
112 [EXTCON_CABLE_JIG_ON_UART] = "JIG-UART-ON",
116 /* Define OVP (Over Voltage Protection), OTP (Over Temperature Protection) */
117 enum rt8973a_event_type {
118 RT8973A_EVENT_ATTACH = 1,
119 RT8973A_EVENT_DETACH,
124 /* Define supported accessory type */
125 enum rt8973a_muic_acc_type {
126 RT8973A_MUIC_ADC_OTG = 0x0,
127 RT8973A_MUIC_ADC_AUDIO_SEND_END_BUTTON,
128 RT8973A_MUIC_ADC_AUDIO_REMOTE_S1_BUTTON,
129 RT8973A_MUIC_ADC_AUDIO_REMOTE_S2_BUTTON,
130 RT8973A_MUIC_ADC_AUDIO_REMOTE_S3_BUTTON,
131 RT8973A_MUIC_ADC_AUDIO_REMOTE_S4_BUTTON,
132 RT8973A_MUIC_ADC_AUDIO_REMOTE_S5_BUTTON,
133 RT8973A_MUIC_ADC_AUDIO_REMOTE_S6_BUTTON,
134 RT8973A_MUIC_ADC_AUDIO_REMOTE_S7_BUTTON,
135 RT8973A_MUIC_ADC_AUDIO_REMOTE_S8_BUTTON,
136 RT8973A_MUIC_ADC_AUDIO_REMOTE_S9_BUTTON,
137 RT8973A_MUIC_ADC_AUDIO_REMOTE_S10_BUTTON,
138 RT8973A_MUIC_ADC_AUDIO_REMOTE_S11_BUTTON,
139 RT8973A_MUIC_ADC_AUDIO_REMOTE_S12_BUTTON,
140 RT8973A_MUIC_ADC_RESERVED_ACC_1,
141 RT8973A_MUIC_ADC_RESERVED_ACC_2,
142 RT8973A_MUIC_ADC_RESERVED_ACC_3,
143 RT8973A_MUIC_ADC_RESERVED_ACC_4,
144 RT8973A_MUIC_ADC_RESERVED_ACC_5,
145 RT8973A_MUIC_ADC_AUDIO_TYPE2,
146 RT8973A_MUIC_ADC_PHONE_POWERED_DEV,
147 RT8973A_MUIC_ADC_UNKNOWN_ACC_1,
148 RT8973A_MUIC_ADC_UNKNOWN_ACC_2,
150 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB,
151 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB,
152 RT8973A_MUIC_ADC_UNKNOWN_ACC_3,
153 RT8973A_MUIC_ADC_UNKNOWN_ACC_4,
154 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART,
155 RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART,
156 RT8973A_MUIC_ADC_UNKNOWN_ACC_5,
157 RT8973A_MUIC_ADC_OPEN = 0x1f,
159 /* The below accessories has same ADC value (0x1f).
160 So, Device type1 is used to separate specific accessory. */
161 /* |---------|--ADC| */
163 RT8973A_MUIC_ADC_USB = 0x3f, /* | 001|11111| */
166 /* List of supported interrupt for RT8973A */
167 static struct muic_irq rt8973a_muic_irqs[] = {
168 { RT8973A_INT1_ATTACH, "muic-attach" },
169 { RT8973A_INT1_DETACH, "muic-detach" },
170 { RT8973A_INT1_CHGDET, "muic-chgdet" },
171 { RT8973A_INT1_DCD_T, "muic-dcd-t" },
172 { RT8973A_INT1_OVP, "muic-ovp" },
173 { RT8973A_INT1_CONNECT, "muic-connect" },
174 { RT8973A_INT1_ADC_CHG, "muic-adc-chg" },
175 { RT8973A_INT1_OTP, "muic-otp" },
176 { RT8973A_INT2_UVLO, "muic-uvlo" },
177 { RT8973A_INT2_POR, "muic-por" },
178 { RT8973A_INT2_OTP_FET, "muic-otp-fet" },
179 { RT8973A_INT2_OVP_FET, "muic-ovp-fet" },
180 { RT8973A_INT2_OCP_LATCH, "muic-ocp-latch" },
181 { RT8973A_INT2_OCP, "muic-ocp" },
182 { RT8973A_INT2_OVP_OCP, "muic-ovp-ocp" },
185 /* Define interrupt list of RT8973A to register regmap_irq */
186 static const struct regmap_irq rt8973a_irqs[] = {
187 /* INT1 interrupts */
188 { .reg_offset = 0, .mask = RT8973A_INT1_ATTACH_MASK, },
189 { .reg_offset = 0, .mask = RT8973A_INT1_DETACH_MASK, },
190 { .reg_offset = 0, .mask = RT8973A_INT1_CHGDET_MASK, },
191 { .reg_offset = 0, .mask = RT8973A_INT1_DCD_T_MASK, },
192 { .reg_offset = 0, .mask = RT8973A_INT1_OVP_MASK, },
193 { .reg_offset = 0, .mask = RT8973A_INT1_CONNECT_MASK, },
194 { .reg_offset = 0, .mask = RT8973A_INT1_ADC_CHG_MASK, },
195 { .reg_offset = 0, .mask = RT8973A_INT1_OTP_MASK, },
197 /* INT2 interrupts */
198 { .reg_offset = 1, .mask = RT8973A_INT2_UVLOT_MASK,},
199 { .reg_offset = 1, .mask = RT8973A_INT2_POR_MASK, },
200 { .reg_offset = 1, .mask = RT8973A_INT2_OTP_FET_MASK, },
201 { .reg_offset = 1, .mask = RT8973A_INT2_OVP_FET_MASK, },
202 { .reg_offset = 1, .mask = RT8973A_INT2_OCP_LATCH_MASK, },
203 { .reg_offset = 1, .mask = RT8973A_INT2_OCP_MASK, },
204 { .reg_offset = 1, .mask = RT8973A_INT2_OVP_OCP_MASK, },
207 static const struct regmap_irq_chip rt8973a_muic_irq_chip = {
209 .status_base = RT8973A_REG_INT1,
210 .mask_base = RT8973A_REG_INTM1,
211 .mask_invert = false,
213 .irqs = rt8973a_irqs,
214 .num_irqs = ARRAY_SIZE(rt8973a_irqs),
217 /* Define regmap configuration of RT8973A for I2C communication */
218 static bool rt8973a_muic_volatile_reg(struct device *dev, unsigned int reg)
221 case RT8973A_REG_INTM1:
222 case RT8973A_REG_INTM2:
230 static const struct regmap_config rt8973a_muic_regmap_config = {
233 .volatile_reg = rt8973a_muic_volatile_reg,
234 .max_register = RT8973A_REG_END,
237 /* Change DM_CON/DP_CON/VBUSIN switch according to cable type */
238 static int rt8973a_muic_set_path(struct rt8973a_muic_info *info,
239 unsigned int con_sw, bool attached)
244 * Don't need to set h/w path according to cable type
245 * if Auto-configuration mode of CONTROL1 register is true.
247 if (info->auto_config)
251 con_sw = DM_DP_SWITCH_UART;
254 case DM_DP_SWITCH_OPEN:
255 case DM_DP_SWITCH_USB:
256 case DM_DP_SWITCH_UART:
257 ret = regmap_update_bits(info->regmap, RT8973A_REG_MANUAL_SW1,
258 RT8973A_REG_MANUAL_SW1_DP_MASK |
259 RT8973A_REG_MANUAL_SW1_DM_MASK,
263 "cannot update DM_CON/DP_CON switch\n");
268 dev_err(info->dev, "Unknown DM_CON/DP_CON switch type (%d)\n",
276 static int rt8973a_muic_get_cable_type(struct rt8973a_muic_info *info)
278 unsigned int adc, dev1;
281 /* Read ADC value according to external cable or button */
282 ret = regmap_read(info->regmap, RT8973A_REG_ADC, &adc);
284 dev_err(info->dev, "failed to read ADC register\n");
287 cable_type = adc & RT8973A_REG_ADC_MASK;
289 /* Read Device 1 reigster to identify correct cable type */
290 ret = regmap_read(info->regmap, RT8973A_REG_DEV1, &dev1);
292 dev_err(info->dev, "failed to read DEV1 register\n");
297 case RT8973A_MUIC_ADC_OPEN:
298 if (dev1 & RT8973A_REG_DEV1_USB_MASK)
299 cable_type = RT8973A_MUIC_ADC_USB;
300 else if (dev1 & RT8973A_REG_DEV1_DCPORT_MASK)
301 cable_type = RT8973A_MUIC_ADC_TA;
303 cable_type = RT8973A_MUIC_ADC_OPEN;
312 static int rt8973a_muic_cable_handler(struct rt8973a_muic_info *info,
313 enum rt8973a_event_type event)
315 static unsigned int prev_cable_type;
316 const char **cable_names = info->edev->supported_cable;
317 unsigned int con_sw = DM_DP_SWITCH_UART;
318 int ret, idx = 0, cable_type;
319 bool attached = false;
325 case RT8973A_EVENT_ATTACH:
326 cable_type = rt8973a_muic_get_cable_type(info);
329 case RT8973A_EVENT_DETACH:
330 cable_type = prev_cable_type;
333 case RT8973A_EVENT_OVP:
334 case RT8973A_EVENT_OTP:
336 "happen Over %s issue. Need to disconnect all cables\n",
337 event == RT8973A_EVENT_OVP ? "Voltage" : "Temperature");
338 cable_type = prev_cable_type;
343 "Cannot handle this event (event:%d)\n", event);
346 prev_cable_type = cable_type;
348 switch (cable_type) {
349 case RT8973A_MUIC_ADC_OTG:
350 idx = EXTCON_CABLE_USB_HOST;
351 con_sw = DM_DP_SWITCH_USB;
353 case RT8973A_MUIC_ADC_TA:
354 idx = EXTCON_CABLE_TA;
355 con_sw = DM_DP_SWITCH_OPEN;
357 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_USB:
358 idx = EXTCON_CABLE_JIG_OFF_USB;
359 con_sw = DM_DP_SWITCH_UART;
361 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_USB:
362 idx = EXTCON_CABLE_JIG_ON_USB;
363 con_sw = DM_DP_SWITCH_UART;
365 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_OFF_UART:
366 idx = EXTCON_CABLE_JIG_OFF_UART;
367 con_sw = DM_DP_SWITCH_UART;
369 case RT8973A_MUIC_ADC_FACTORY_MODE_BOOT_ON_UART:
370 idx = EXTCON_CABLE_JIG_ON_UART;
371 con_sw = DM_DP_SWITCH_UART;
373 case RT8973A_MUIC_ADC_USB:
374 idx = EXTCON_CABLE_USB;
375 con_sw = DM_DP_SWITCH_USB;
377 case RT8973A_MUIC_ADC_OPEN:
379 case RT8973A_MUIC_ADC_UNKNOWN_ACC_1:
380 case RT8973A_MUIC_ADC_UNKNOWN_ACC_2:
381 case RT8973A_MUIC_ADC_UNKNOWN_ACC_3:
382 case RT8973A_MUIC_ADC_UNKNOWN_ACC_4:
383 case RT8973A_MUIC_ADC_UNKNOWN_ACC_5:
385 "Unknown accessory type (adc:0x%x)\n", cable_type);
387 case RT8973A_MUIC_ADC_AUDIO_SEND_END_BUTTON:
388 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S1_BUTTON:
389 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S2_BUTTON:
390 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S3_BUTTON:
391 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S4_BUTTON:
392 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S5_BUTTON:
393 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S6_BUTTON:
394 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S7_BUTTON:
395 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S8_BUTTON:
396 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S9_BUTTON:
397 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S10_BUTTON:
398 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S11_BUTTON:
399 case RT8973A_MUIC_ADC_AUDIO_REMOTE_S12_BUTTON:
400 case RT8973A_MUIC_ADC_AUDIO_TYPE2:
402 "Audio device/button type (adc:0x%x)\n", cable_type);
404 case RT8973A_MUIC_ADC_RESERVED_ACC_1:
405 case RT8973A_MUIC_ADC_RESERVED_ACC_2:
406 case RT8973A_MUIC_ADC_RESERVED_ACC_3:
407 case RT8973A_MUIC_ADC_RESERVED_ACC_4:
408 case RT8973A_MUIC_ADC_RESERVED_ACC_5:
409 case RT8973A_MUIC_ADC_PHONE_POWERED_DEV:
413 "Cannot handle this cable_type (adc:0x%x)\n",
418 /* Change internal hardware path(DM_CON/DP_CON) */
419 ret = rt8973a_muic_set_path(info, con_sw, attached);
423 /* Change the state of external accessory */
424 extcon_set_cable_state(info->edev, cable_names[idx], attached);
429 static void rt8973a_muic_irq_work(struct work_struct *work)
431 struct rt8973a_muic_info *info = container_of(work,
432 struct rt8973a_muic_info, irq_work);
438 mutex_lock(&info->mutex);
440 /* Detect attached or detached cables */
441 if (info->irq_attach) {
442 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_ATTACH);
443 info->irq_attach = false;
446 if (info->irq_detach) {
447 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_DETACH);
448 info->irq_detach = false;
452 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_OVP);
453 info->irq_ovp = false;
457 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_OTP);
458 info->irq_otp = false;
462 dev_err(info->dev, "failed to handle MUIC interrupt\n");
464 mutex_unlock(&info->mutex);
467 static irqreturn_t rt8973a_muic_irq_handler(int irq, void *data)
469 struct rt8973a_muic_info *info = data;
470 int i, irq_type = -1;
472 for (i = 0; i < info->num_muic_irqs; i++)
473 if (irq == info->muic_irqs[i].virq)
474 irq_type = info->muic_irqs[i].irq;
477 case RT8973A_INT1_ATTACH:
478 info->irq_attach = true;
480 case RT8973A_INT1_DETACH:
481 info->irq_detach = true;
483 case RT8973A_INT1_OVP:
484 info->irq_ovp = true;
486 case RT8973A_INT1_OTP:
487 info->irq_otp = true;
489 case RT8973A_INT1_CHGDET:
490 case RT8973A_INT1_DCD_T:
491 case RT8973A_INT1_CONNECT:
492 case RT8973A_INT1_ADC_CHG:
493 case RT8973A_INT2_UVLO:
494 case RT8973A_INT2_POR:
495 case RT8973A_INT2_OTP_FET:
496 case RT8973A_INT2_OVP_FET:
497 case RT8973A_INT2_OCP_LATCH:
498 case RT8973A_INT2_OCP:
499 case RT8973A_INT2_OVP_OCP:
502 "Cannot handle this interrupt (%d)\n", irq_type);
506 schedule_work(&info->irq_work);
511 static void rt8973a_muic_detect_cable_wq(struct work_struct *work)
513 struct rt8973a_muic_info *info = container_of(to_delayed_work(work),
514 struct rt8973a_muic_info, wq_detcable);
517 /* Notify the state of connector cable or not */
518 ret = rt8973a_muic_cable_handler(info, RT8973A_EVENT_ATTACH);
520 dev_warn(info->dev, "failed to detect cable state\n");
523 static void rt8973a_init_dev_type(struct rt8973a_muic_info *info)
525 unsigned int data, vendor_id, version_id;
528 /* To test I2C, Print version_id and vendor_id of RT8973A */
529 ret = regmap_read(info->regmap, RT8973A_REG_DEVICE_ID, &data);
532 "failed to read DEVICE_ID register: %d\n", ret);
536 vendor_id = ((data & RT8973A_REG_DEVICE_ID_VENDOR_MASK) >>
537 RT8973A_REG_DEVICE_ID_VENDOR_SHIFT);
538 version_id = ((data & RT8973A_REG_DEVICE_ID_VERSION_MASK) >>
539 RT8973A_REG_DEVICE_ID_VERSION_SHIFT);
541 dev_info(info->dev, "Device type: version: 0x%x, vendor: 0x%x\n",
542 version_id, vendor_id);
544 /* Initiazle the register of RT8973A device to bring-up */
545 for (i = 0; i < info->num_reg_data; i++) {
546 u8 reg = info->reg_data[i].reg;
547 u8 mask = info->reg_data[i].mask;
550 if (info->reg_data[i].invert)
551 val = ~info->reg_data[i].val;
553 val = info->reg_data[i].val;
555 regmap_update_bits(info->regmap, reg, mask, val);
558 /* Check whether RT8973A is auto swithcing mode or not */
559 ret = regmap_read(info->regmap, RT8973A_REG_CONTROL1, &data);
562 "failed to read CONTROL1 register: %d\n", ret);
566 data &= RT8973A_REG_CONTROL1_AUTO_CONFIG_MASK;
568 info->auto_config = true;
570 "Enable Auto-configuration for internal path\n");
574 static int rt8973a_muic_i2c_probe(struct i2c_client *i2c,
575 const struct i2c_device_id *id)
577 struct device_node *np = i2c->dev.of_node;
578 struct rt8973a_muic_info *info;
579 int i, ret, irq_flags;
584 info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
587 i2c_set_clientdata(i2c, info);
589 info->dev = &i2c->dev;
591 info->irq = i2c->irq;
592 info->muic_irqs = rt8973a_muic_irqs;
593 info->num_muic_irqs = ARRAY_SIZE(rt8973a_muic_irqs);
594 info->reg_data = rt8973a_reg_data;
595 info->num_reg_data = ARRAY_SIZE(rt8973a_reg_data);
597 mutex_init(&info->mutex);
599 INIT_WORK(&info->irq_work, rt8973a_muic_irq_work);
601 info->regmap = devm_regmap_init_i2c(i2c, &rt8973a_muic_regmap_config);
602 if (IS_ERR(info->regmap)) {
603 ret = PTR_ERR(info->regmap);
604 dev_err(info->dev, "failed to allocate register map: %d\n",
609 /* Support irq domain for RT8973A MUIC device */
610 irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
611 ret = regmap_add_irq_chip(info->regmap, info->irq, irq_flags, 0,
612 &rt8973a_muic_irq_chip, &info->irq_data);
614 dev_err(info->dev, "failed to add irq_chip (irq:%d, err:%d)\n",
619 for (i = 0; i < info->num_muic_irqs; i++) {
620 struct muic_irq *muic_irq = &info->muic_irqs[i];
621 unsigned int virq = 0;
623 virq = regmap_irq_get_virq(info->irq_data, muic_irq->irq);
626 muic_irq->virq = virq;
628 ret = devm_request_threaded_irq(info->dev, virq, NULL,
629 rt8973a_muic_irq_handler,
631 muic_irq->name, info);
634 "failed: irq request (IRQ: %d, error :%d)\n",
640 /* Allocate extcon device */
641 info->edev = devm_extcon_dev_allocate(info->dev, rt8973a_extcon_cable);
642 if (IS_ERR(info->edev)) {
643 dev_err(info->dev, "failed to allocate memory for extcon\n");
646 info->edev->name = np->name;
648 /* Register extcon device */
649 ret = devm_extcon_dev_register(info->dev, info->edev);
651 dev_err(info->dev, "failed to register extcon device\n");
656 * Detect accessory after completing the initialization of platform
658 * - Use delayed workqueue to detect cable state and then
659 * notify cable state to notifiee/platform through uevent.
660 * After completing the booting of platform, the extcon provider
661 * driver should notify cable state to upper layer.
663 INIT_DELAYED_WORK(&info->wq_detcable, rt8973a_muic_detect_cable_wq);
664 queue_delayed_work(system_power_efficient_wq, &info->wq_detcable,
665 msecs_to_jiffies(DELAY_MS_DEFAULT));
667 /* Initialize RT8973A device and print vendor id and version id */
668 rt8973a_init_dev_type(info);
673 static int rt8973a_muic_i2c_remove(struct i2c_client *i2c)
675 struct rt8973a_muic_info *info = i2c_get_clientdata(i2c);
677 regmap_del_irq_chip(info->irq, info->irq_data);
682 static const struct of_device_id rt8973a_dt_match[] = {
683 { .compatible = "richtek,rt8973a-muic" },
687 #ifdef CONFIG_PM_SLEEP
688 static int rt8973a_muic_suspend(struct device *dev)
690 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
691 struct rt8973a_muic_info *info = i2c_get_clientdata(i2c);
693 enable_irq_wake(info->irq);
698 static int rt8973a_muic_resume(struct device *dev)
700 struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
701 struct rt8973a_muic_info *info = i2c_get_clientdata(i2c);
703 disable_irq_wake(info->irq);
709 static SIMPLE_DEV_PM_OPS(rt8973a_muic_pm_ops,
710 rt8973a_muic_suspend, rt8973a_muic_resume);
712 static const struct i2c_device_id rt8973a_i2c_id[] = {
713 { "rt8973a", TYPE_RT8973A },
716 MODULE_DEVICE_TABLE(i2c, rt8973a_i2c_id);
718 static struct i2c_driver rt8973a_muic_i2c_driver = {
721 .owner = THIS_MODULE,
722 .pm = &rt8973a_muic_pm_ops,
723 .of_match_table = rt8973a_dt_match,
725 .probe = rt8973a_muic_i2c_probe,
726 .remove = rt8973a_muic_i2c_remove,
727 .id_table = rt8973a_i2c_id,
730 static int __init rt8973a_muic_i2c_init(void)
732 return i2c_add_driver(&rt8973a_muic_i2c_driver);
734 subsys_initcall(rt8973a_muic_i2c_init);
736 MODULE_DESCRIPTION("Richtek RT8973A Extcon driver");
737 MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
738 MODULE_LICENSE("GPL");