Merge tag 'v3.18-rockchip-cpufreqdev-v2' of git://git.kernel.org/pub/scm/linux/kernel...
[pandora-kernel.git] / sound / soc / codecs / rt286.c
1 /*
2  * rt286.c  --  RT286 ALSA SoC audio codec driver
3  *
4  * Copyright 2013 Realtek Semiconductor Corp.
5  * Author: Bard Liao <bardliao@realtek.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 version 2 as
9  * published by the Free Software Foundation.
10  */
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/init.h>
15 #include <linux/delay.h>
16 #include <linux/pm.h>
17 #include <linux/i2c.h>
18 #include <linux/platform_device.h>
19 #include <linux/spi/spi.h>
20 #include <linux/acpi.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
26 #include <sound/initval.h>
27 #include <sound/tlv.h>
28 #include <sound/jack.h>
29 #include <linux/workqueue.h>
30 #include <sound/rt286.h>
31 #include <sound/hda_verbs.h>
32
33 #include "rt286.h"
34
35 #define RT286_VENDOR_ID 0x10ec0286
36
37 struct rt286_priv {
38         struct regmap *regmap;
39         struct rt286_platform_data pdata;
40         struct i2c_client *i2c;
41         struct snd_soc_jack *jack;
42         struct delayed_work jack_detect_work;
43         int sys_clk;
44         struct reg_default *index_cache;
45 };
46
47 static struct reg_default rt286_index_def[] = {
48         { 0x01, 0xaaaa },
49         { 0x02, 0x8aaa },
50         { 0x03, 0x0002 },
51         { 0x04, 0xaf01 },
52         { 0x08, 0x000d },
53         { 0x09, 0xd810 },
54         { 0x0a, 0x0120 },
55         { 0x0b, 0x0000 },
56         { 0x0d, 0x2800 },
57         { 0x0f, 0x0000 },
58         { 0x19, 0x0a17 },
59         { 0x20, 0x0020 },
60         { 0x33, 0x0208 },
61         { 0x49, 0x0004 },
62         { 0x4f, 0x50e9 },
63         { 0x50, 0x2000 },
64         { 0x63, 0x2902 },
65         { 0x67, 0x1111 },
66         { 0x68, 0x1016 },
67         { 0x69, 0x273f },
68 };
69 #define INDEX_CACHE_SIZE ARRAY_SIZE(rt286_index_def)
70
71 static const struct reg_default rt286_reg[] = {
72         { 0x00170500, 0x00000400 },
73         { 0x00220000, 0x00000031 },
74         { 0x00239000, 0x0000007f },
75         { 0x0023a000, 0x0000007f },
76         { 0x00270500, 0x00000400 },
77         { 0x00370500, 0x00000400 },
78         { 0x00870500, 0x00000400 },
79         { 0x00920000, 0x00000031 },
80         { 0x00935000, 0x000000c3 },
81         { 0x00936000, 0x000000c3 },
82         { 0x00970500, 0x00000400 },
83         { 0x00b37000, 0x00000097 },
84         { 0x00b37200, 0x00000097 },
85         { 0x00b37300, 0x00000097 },
86         { 0x00c37000, 0x00000000 },
87         { 0x00c37100, 0x00000080 },
88         { 0x01270500, 0x00000400 },
89         { 0x01370500, 0x00000400 },
90         { 0x01371f00, 0x411111f0 },
91         { 0x01439000, 0x00000080 },
92         { 0x0143a000, 0x00000080 },
93         { 0x01470700, 0x00000000 },
94         { 0x01470500, 0x00000400 },
95         { 0x01470c00, 0x00000000 },
96         { 0x01470100, 0x00000000 },
97         { 0x01837000, 0x00000000 },
98         { 0x01870500, 0x00000400 },
99         { 0x02050000, 0x00000000 },
100         { 0x02139000, 0x00000080 },
101         { 0x0213a000, 0x00000080 },
102         { 0x02170100, 0x00000000 },
103         { 0x02170500, 0x00000400 },
104         { 0x02170700, 0x00000000 },
105         { 0x02270100, 0x00000000 },
106         { 0x02370100, 0x00000000 },
107         { 0x01870700, 0x00000020 },
108         { 0x00830000, 0x000000c3 },
109         { 0x00930000, 0x000000c3 },
110         { 0x01270700, 0x00000000 },
111 };
112
113 static bool rt286_volatile_register(struct device *dev, unsigned int reg)
114 {
115         switch (reg) {
116         case 0 ... 0xff:
117         case RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
118         case RT286_GET_HP_SENSE:
119         case RT286_GET_MIC1_SENSE:
120         case RT286_PROC_COEF:
121                 return true;
122         default:
123                 return false;
124         }
125
126
127 }
128
129 static bool rt286_readable_register(struct device *dev, unsigned int reg)
130 {
131         switch (reg) {
132         case 0 ... 0xff:
133         case RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID):
134         case RT286_GET_HP_SENSE:
135         case RT286_GET_MIC1_SENSE:
136         case RT286_SET_AUDIO_POWER:
137         case RT286_SET_HPO_POWER:
138         case RT286_SET_SPK_POWER:
139         case RT286_SET_DMIC1_POWER:
140         case RT286_SPK_MUX:
141         case RT286_HPO_MUX:
142         case RT286_ADC0_MUX:
143         case RT286_ADC1_MUX:
144         case RT286_SET_MIC1:
145         case RT286_SET_PIN_HPO:
146         case RT286_SET_PIN_SPK:
147         case RT286_SET_PIN_DMIC1:
148         case RT286_SPK_EAPD:
149         case RT286_SET_AMP_GAIN_HPO:
150         case RT286_SET_DMIC2_DEFAULT:
151         case RT286_DACL_GAIN:
152         case RT286_DACR_GAIN:
153         case RT286_ADCL_GAIN:
154         case RT286_ADCR_GAIN:
155         case RT286_MIC_GAIN:
156         case RT286_SPOL_GAIN:
157         case RT286_SPOR_GAIN:
158         case RT286_HPOL_GAIN:
159         case RT286_HPOR_GAIN:
160         case RT286_F_DAC_SWITCH:
161         case RT286_F_RECMIX_SWITCH:
162         case RT286_REC_MIC_SWITCH:
163         case RT286_REC_I2S_SWITCH:
164         case RT286_REC_LINE_SWITCH:
165         case RT286_REC_BEEP_SWITCH:
166         case RT286_DAC_FORMAT:
167         case RT286_ADC_FORMAT:
168         case RT286_COEF_INDEX:
169         case RT286_PROC_COEF:
170         case RT286_SET_AMP_GAIN_ADC_IN1:
171         case RT286_SET_AMP_GAIN_ADC_IN2:
172         case RT286_SET_POWER(RT286_DAC_OUT1):
173         case RT286_SET_POWER(RT286_DAC_OUT2):
174         case RT286_SET_POWER(RT286_ADC_IN1):
175         case RT286_SET_POWER(RT286_ADC_IN2):
176         case RT286_SET_POWER(RT286_DMIC2):
177         case RT286_SET_POWER(RT286_MIC1):
178                 return true;
179         default:
180                 return false;
181         }
182 }
183
184 static int rt286_hw_write(void *context, unsigned int reg, unsigned int value)
185 {
186         struct i2c_client *client = context;
187         struct rt286_priv *rt286 = i2c_get_clientdata(client);
188         u8 data[4];
189         int ret, i;
190
191         /*handle index registers*/
192         if (reg <= 0xff) {
193                 rt286_hw_write(client, RT286_COEF_INDEX, reg);
194                 for (i = 0; i < INDEX_CACHE_SIZE; i++) {
195                         if (reg == rt286->index_cache[i].reg) {
196                                 rt286->index_cache[i].def = value;
197                                 break;
198                         }
199
200                 }
201                 reg = RT286_PROC_COEF;
202         }
203
204         data[0] = (reg >> 24) & 0xff;
205         data[1] = (reg >> 16) & 0xff;
206         /*
207          * 4 bit VID: reg should be 0
208          * 12 bit VID: value should be 0
209          * So we use an OR operator to handle it rather than use if condition.
210          */
211         data[2] = ((reg >> 8) & 0xff) | ((value >> 8) & 0xff);
212         data[3] = value & 0xff;
213
214         ret = i2c_master_send(client, data, 4);
215
216         if (ret == 4)
217                 return 0;
218         else
219                 pr_err("ret=%d\n", ret);
220         if (ret < 0)
221                 return ret;
222         else
223                 return -EIO;
224 }
225
226 static int rt286_hw_read(void *context, unsigned int reg, unsigned int *value)
227 {
228         struct i2c_client *client = context;
229         struct i2c_msg xfer[2];
230         int ret;
231         __be32 be_reg;
232         unsigned int index, vid, buf = 0x0;
233
234         /*handle index registers*/
235         if (reg <= 0xff) {
236                 rt286_hw_write(client, RT286_COEF_INDEX, reg);
237                 reg = RT286_PROC_COEF;
238         }
239
240         reg = reg | 0x80000;
241         vid = (reg >> 8) & 0xfff;
242
243         if (AC_VERB_GET_AMP_GAIN_MUTE == (vid & 0xf00)) {
244                 index = (reg >> 8) & 0xf;
245                 reg = (reg & ~0xf0f) | index;
246         }
247         be_reg = cpu_to_be32(reg);
248
249         /* Write register */
250         xfer[0].addr = client->addr;
251         xfer[0].flags = 0;
252         xfer[0].len = 4;
253         xfer[0].buf = (u8 *)&be_reg;
254
255         /* Read data */
256         xfer[1].addr = client->addr;
257         xfer[1].flags = I2C_M_RD;
258         xfer[1].len = 4;
259         xfer[1].buf = (u8 *)&buf;
260
261         ret = i2c_transfer(client->adapter, xfer, 2);
262         if (ret < 0)
263                 return ret;
264         else if (ret != 2)
265                 return -EIO;
266
267         *value = be32_to_cpu(buf);
268
269         return 0;
270 }
271
272 #ifdef CONFIG_PM
273 static void rt286_index_sync(struct snd_soc_codec *codec)
274 {
275         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
276         int i;
277
278         for (i = 0; i < INDEX_CACHE_SIZE; i++) {
279                 snd_soc_write(codec, rt286->index_cache[i].reg,
280                                   rt286->index_cache[i].def);
281         }
282 }
283 #endif
284
285 static int rt286_support_power_controls[] = {
286         RT286_DAC_OUT1,
287         RT286_DAC_OUT2,
288         RT286_ADC_IN1,
289         RT286_ADC_IN2,
290         RT286_MIC1,
291         RT286_DMIC1,
292         RT286_DMIC2,
293         RT286_SPK_OUT,
294         RT286_HP_OUT,
295 };
296 #define RT286_POWER_REG_LEN ARRAY_SIZE(rt286_support_power_controls)
297
298 static int rt286_jack_detect(struct rt286_priv *rt286, bool *hp, bool *mic)
299 {
300         unsigned int val, buf;
301         int i;
302
303         *hp = false;
304         *mic = false;
305
306         if (rt286->pdata.cbj_en) {
307                 regmap_read(rt286->regmap, RT286_GET_HP_SENSE, &buf);
308                 *hp = buf & 0x80000000;
309                 if (*hp) {
310                         /* power on HV,VERF */
311                         regmap_update_bits(rt286->regmap,
312                                 RT286_POWER_CTRL1, 0x1001, 0x0);
313                         /* power LDO1 */
314                         regmap_update_bits(rt286->regmap,
315                                 RT286_POWER_CTRL2, 0x4, 0x4);
316                         regmap_write(rt286->regmap, RT286_SET_MIC1, 0x24);
317                         regmap_read(rt286->regmap, RT286_CBJ_CTRL2, &val);
318
319                         msleep(200);
320                         i = 40;
321                         while (((val & 0x0800) == 0) && (i > 0)) {
322                                 regmap_read(rt286->regmap,
323                                         RT286_CBJ_CTRL2, &val);
324                                 i--;
325                                 msleep(20);
326                         }
327
328                         if (0x0400 == (val & 0x0700)) {
329                                 *mic = false;
330
331                                 regmap_write(rt286->regmap,
332                                         RT286_SET_MIC1, 0x20);
333                                 /* power off HV,VERF */
334                                 regmap_update_bits(rt286->regmap,
335                                         RT286_POWER_CTRL1, 0x1001, 0x1001);
336                                 regmap_update_bits(rt286->regmap,
337                                         RT286_A_BIAS_CTRL3, 0xc000, 0x0000);
338                                 regmap_update_bits(rt286->regmap,
339                                         RT286_CBJ_CTRL1, 0x0030, 0x0000);
340                                 regmap_update_bits(rt286->regmap,
341                                         RT286_A_BIAS_CTRL2, 0xc000, 0x0000);
342                         } else if ((0x0200 == (val & 0x0700)) ||
343                                 (0x0100 == (val & 0x0700))) {
344                                 *mic = true;
345                                 regmap_update_bits(rt286->regmap,
346                                         RT286_A_BIAS_CTRL3, 0xc000, 0x8000);
347                                 regmap_update_bits(rt286->regmap,
348                                         RT286_CBJ_CTRL1, 0x0030, 0x0020);
349                                 regmap_update_bits(rt286->regmap,
350                                         RT286_A_BIAS_CTRL2, 0xc000, 0x8000);
351                         } else {
352                                 *mic = false;
353                         }
354
355                         regmap_update_bits(rt286->regmap,
356                                                 RT286_MISC_CTRL1,
357                                                 0x0060, 0x0000);
358                 } else {
359                         regmap_update_bits(rt286->regmap,
360                                                 RT286_MISC_CTRL1,
361                                                 0x0060, 0x0020);
362                         regmap_update_bits(rt286->regmap,
363                                                 RT286_A_BIAS_CTRL3,
364                                                 0xc000, 0x8000);
365                         regmap_update_bits(rt286->regmap,
366                                                 RT286_CBJ_CTRL1,
367                                                 0x0030, 0x0020);
368                         regmap_update_bits(rt286->regmap,
369                                                 RT286_A_BIAS_CTRL2,
370                                                 0xc000, 0x8000);
371
372                         *mic = false;
373                 }
374         } else {
375                 regmap_read(rt286->regmap, RT286_GET_HP_SENSE, &buf);
376                 *hp = buf & 0x80000000;
377                 regmap_read(rt286->regmap, RT286_GET_MIC1_SENSE, &buf);
378                 *mic = buf & 0x80000000;
379         }
380
381         return 0;
382 }
383
384 static void rt286_jack_detect_work(struct work_struct *work)
385 {
386         struct rt286_priv *rt286 =
387                 container_of(work, struct rt286_priv, jack_detect_work.work);
388         int status = 0;
389         bool hp = false;
390         bool mic = false;
391
392         rt286_jack_detect(rt286, &hp, &mic);
393
394         if (hp == true)
395                 status |= SND_JACK_HEADPHONE;
396
397         if (mic == true)
398                 status |= SND_JACK_MICROPHONE;
399
400         snd_soc_jack_report(rt286->jack, status,
401                 SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
402 }
403
404 int rt286_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
405 {
406         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
407
408         rt286->jack = jack;
409
410         /* Send an initial empty report */
411         snd_soc_jack_report(rt286->jack, 0,
412                 SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
413
414         return 0;
415 }
416 EXPORT_SYMBOL_GPL(rt286_mic_detect);
417
418 static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -6350, 50, 0);
419 static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 1000, 0);
420
421 static const struct snd_kcontrol_new rt286_snd_controls[] = {
422         SOC_DOUBLE_R_TLV("DAC0 Playback Volume", RT286_DACL_GAIN,
423                             RT286_DACR_GAIN, 0, 0x7f, 0, out_vol_tlv),
424         SOC_DOUBLE_R_TLV("ADC0 Capture Volume", RT286_ADCL_GAIN,
425                             RT286_ADCR_GAIN, 0, 0x7f, 0, out_vol_tlv),
426         SOC_SINGLE_TLV("AMIC Volume", RT286_MIC_GAIN,
427                             0, 0x3, 0, mic_vol_tlv),
428         SOC_DOUBLE_R("Speaker Playback Switch", RT286_SPOL_GAIN,
429                             RT286_SPOR_GAIN, RT286_MUTE_SFT, 1, 1),
430 };
431
432 /* Digital Mixer */
433 static const struct snd_kcontrol_new rt286_front_mix[] = {
434         SOC_DAPM_SINGLE("DAC Switch",  RT286_F_DAC_SWITCH,
435                         RT286_MUTE_SFT, 1, 1),
436         SOC_DAPM_SINGLE("RECMIX Switch", RT286_F_RECMIX_SWITCH,
437                         RT286_MUTE_SFT, 1, 1),
438 };
439
440 /* Analog Input Mixer */
441 static const struct snd_kcontrol_new rt286_rec_mix[] = {
442         SOC_DAPM_SINGLE("Mic1 Switch", RT286_REC_MIC_SWITCH,
443                         RT286_MUTE_SFT, 1, 1),
444         SOC_DAPM_SINGLE("I2S Switch", RT286_REC_I2S_SWITCH,
445                         RT286_MUTE_SFT, 1, 1),
446         SOC_DAPM_SINGLE("Line1 Switch", RT286_REC_LINE_SWITCH,
447                         RT286_MUTE_SFT, 1, 1),
448         SOC_DAPM_SINGLE("Beep Switch", RT286_REC_BEEP_SWITCH,
449                         RT286_MUTE_SFT, 1, 1),
450 };
451
452 static const struct snd_kcontrol_new spo_enable_control =
453         SOC_DAPM_SINGLE("Switch", RT286_SET_PIN_SPK,
454                         RT286_SET_PIN_SFT, 1, 0);
455
456 static const struct snd_kcontrol_new hpol_enable_control =
457         SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT286_HPOL_GAIN,
458                         RT286_MUTE_SFT, 1, 1);
459
460 static const struct snd_kcontrol_new hpor_enable_control =
461         SOC_DAPM_SINGLE_AUTODISABLE("Switch", RT286_HPOR_GAIN,
462                         RT286_MUTE_SFT, 1, 1);
463
464 /* ADC0 source */
465 static const char * const rt286_adc_src[] = {
466         "Mic", "RECMIX", "Dmic"
467 };
468
469 static const int rt286_adc_values[] = {
470         0, 4, 5,
471 };
472
473 static SOC_VALUE_ENUM_SINGLE_DECL(
474         rt286_adc0_enum, RT286_ADC0_MUX, RT286_ADC_SEL_SFT,
475         RT286_ADC_SEL_MASK, rt286_adc_src, rt286_adc_values);
476
477 static const struct snd_kcontrol_new rt286_adc0_mux =
478         SOC_DAPM_ENUM("ADC 0 source", rt286_adc0_enum);
479
480 static SOC_VALUE_ENUM_SINGLE_DECL(
481         rt286_adc1_enum, RT286_ADC1_MUX, RT286_ADC_SEL_SFT,
482         RT286_ADC_SEL_MASK, rt286_adc_src, rt286_adc_values);
483
484 static const struct snd_kcontrol_new rt286_adc1_mux =
485         SOC_DAPM_ENUM("ADC 1 source", rt286_adc1_enum);
486
487 static const char * const rt286_dac_src[] = {
488         "Front", "Surround"
489 };
490 /* HP-OUT source */
491 static SOC_ENUM_SINGLE_DECL(rt286_hpo_enum, RT286_HPO_MUX,
492                                 0, rt286_dac_src);
493
494 static const struct snd_kcontrol_new rt286_hpo_mux =
495 SOC_DAPM_ENUM("HPO source", rt286_hpo_enum);
496
497 /* SPK-OUT source */
498 static SOC_ENUM_SINGLE_DECL(rt286_spo_enum, RT286_SPK_MUX,
499                                 0, rt286_dac_src);
500
501 static const struct snd_kcontrol_new rt286_spo_mux =
502 SOC_DAPM_ENUM("SPO source", rt286_spo_enum);
503
504 static int rt286_spk_event(struct snd_soc_dapm_widget *w,
505                             struct snd_kcontrol *kcontrol, int event)
506 {
507         struct snd_soc_codec *codec = w->codec;
508
509         switch (event) {
510         case SND_SOC_DAPM_POST_PMU:
511                 snd_soc_write(codec,
512                         RT286_SPK_EAPD, RT286_SET_EAPD_HIGH);
513                 break;
514         case SND_SOC_DAPM_PRE_PMD:
515                 snd_soc_write(codec,
516                         RT286_SPK_EAPD, RT286_SET_EAPD_LOW);
517                 break;
518
519         default:
520                 return 0;
521         }
522
523         return 0;
524 }
525
526 static int rt286_set_dmic1_event(struct snd_soc_dapm_widget *w,
527                                   struct snd_kcontrol *kcontrol, int event)
528 {
529         struct snd_soc_codec *codec = w->codec;
530
531         switch (event) {
532         case SND_SOC_DAPM_POST_PMU:
533                 snd_soc_write(codec, RT286_SET_PIN_DMIC1, 0x20);
534                 break;
535         case SND_SOC_DAPM_PRE_PMD:
536                 snd_soc_write(codec, RT286_SET_PIN_DMIC1, 0);
537                 break;
538         default:
539                 return 0;
540         }
541
542         return 0;
543 }
544
545 static int rt286_adc_event(struct snd_soc_dapm_widget *w,
546                              struct snd_kcontrol *kcontrol, int event)
547 {
548         struct snd_soc_codec *codec = w->codec;
549         unsigned int nid;
550
551         nid = (w->reg >> 20) & 0xff;
552
553         switch (event) {
554         case SND_SOC_DAPM_POST_PMU:
555                 snd_soc_update_bits(codec,
556                         VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
557                         0x7080, 0x7000);
558                 break;
559         case SND_SOC_DAPM_PRE_PMD:
560                 snd_soc_update_bits(codec,
561                         VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0),
562                         0x7080, 0x7080);
563                 break;
564         default:
565                 return 0;
566         }
567
568         return 0;
569 }
570
571 static const struct snd_soc_dapm_widget rt286_dapm_widgets[] = {
572         /* Input Lines */
573         SND_SOC_DAPM_INPUT("DMIC1 Pin"),
574         SND_SOC_DAPM_INPUT("DMIC2 Pin"),
575         SND_SOC_DAPM_INPUT("MIC1"),
576         SND_SOC_DAPM_INPUT("LINE1"),
577         SND_SOC_DAPM_INPUT("Beep"),
578
579         /* DMIC */
580         SND_SOC_DAPM_PGA_E("DMIC1", RT286_SET_POWER(RT286_DMIC1), 0, 1,
581                 NULL, 0, rt286_set_dmic1_event,
582                 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
583         SND_SOC_DAPM_PGA("DMIC2", RT286_SET_POWER(RT286_DMIC2), 0, 1,
584                 NULL, 0),
585         SND_SOC_DAPM_SUPPLY("DMIC Receiver", SND_SOC_NOPM,
586                 0, 0, NULL, 0),
587
588         /* REC Mixer */
589         SND_SOC_DAPM_MIXER("RECMIX", SND_SOC_NOPM, 0, 0,
590                 rt286_rec_mix, ARRAY_SIZE(rt286_rec_mix)),
591
592         /* ADCs */
593         SND_SOC_DAPM_ADC("ADC 0", NULL, SND_SOC_NOPM, 0, 0),
594         SND_SOC_DAPM_ADC("ADC 1", NULL, SND_SOC_NOPM, 0, 0),
595
596         /* ADC Mux */
597         SND_SOC_DAPM_MUX_E("ADC 0 Mux", RT286_SET_POWER(RT286_ADC_IN1), 0, 1,
598                 &rt286_adc0_mux, rt286_adc_event, SND_SOC_DAPM_PRE_PMD |
599                 SND_SOC_DAPM_POST_PMU),
600         SND_SOC_DAPM_MUX_E("ADC 1 Mux", RT286_SET_POWER(RT286_ADC_IN2), 0, 1,
601                 &rt286_adc1_mux, rt286_adc_event, SND_SOC_DAPM_PRE_PMD |
602                 SND_SOC_DAPM_POST_PMU),
603
604         /* Audio Interface */
605         SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
606         SND_SOC_DAPM_AIF_OUT("AIF1TX", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
607         SND_SOC_DAPM_AIF_IN("AIF2RX", "AIF2 Playback", 0, SND_SOC_NOPM, 0, 0),
608         SND_SOC_DAPM_AIF_OUT("AIF2TX", "AIF2 Capture", 0, SND_SOC_NOPM, 0, 0),
609
610         /* Output Side */
611         /* DACs */
612         SND_SOC_DAPM_DAC("DAC 0", NULL, SND_SOC_NOPM, 0, 0),
613         SND_SOC_DAPM_DAC("DAC 1", NULL, SND_SOC_NOPM, 0, 0),
614
615         /* Output Mux */
616         SND_SOC_DAPM_MUX("SPK Mux", SND_SOC_NOPM, 0, 0, &rt286_spo_mux),
617         SND_SOC_DAPM_MUX("HPO Mux", SND_SOC_NOPM, 0, 0, &rt286_hpo_mux),
618
619         SND_SOC_DAPM_SUPPLY("HP Power", RT286_SET_PIN_HPO,
620                 RT286_SET_PIN_SFT, 0, NULL, 0),
621
622         /* Output Mixer */
623         SND_SOC_DAPM_MIXER("Front", RT286_SET_POWER(RT286_DAC_OUT1), 0, 1,
624                         rt286_front_mix, ARRAY_SIZE(rt286_front_mix)),
625         SND_SOC_DAPM_PGA("Surround", RT286_SET_POWER(RT286_DAC_OUT2), 0, 1,
626                         NULL, 0),
627
628         /* Output Pga */
629         SND_SOC_DAPM_SWITCH_E("SPO", SND_SOC_NOPM, 0, 0,
630                 &spo_enable_control, rt286_spk_event,
631                 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
632         SND_SOC_DAPM_SWITCH("HPO L", SND_SOC_NOPM, 0, 0,
633                 &hpol_enable_control),
634         SND_SOC_DAPM_SWITCH("HPO R", SND_SOC_NOPM, 0, 0,
635                 &hpor_enable_control),
636
637         /* Output Lines */
638         SND_SOC_DAPM_OUTPUT("SPOL"),
639         SND_SOC_DAPM_OUTPUT("SPOR"),
640         SND_SOC_DAPM_OUTPUT("HPO Pin"),
641         SND_SOC_DAPM_OUTPUT("SPDIF"),
642 };
643
644 static const struct snd_soc_dapm_route rt286_dapm_routes[] = {
645         {"DMIC1", NULL, "DMIC1 Pin"},
646         {"DMIC2", NULL, "DMIC2 Pin"},
647         {"DMIC1", NULL, "DMIC Receiver"},
648         {"DMIC2", NULL, "DMIC Receiver"},
649
650         {"RECMIX", "Beep Switch", "Beep"},
651         {"RECMIX", "Line1 Switch", "LINE1"},
652         {"RECMIX", "Mic1 Switch", "MIC1"},
653
654         {"ADC 0 Mux", "Dmic", "DMIC1"},
655         {"ADC 0 Mux", "RECMIX", "RECMIX"},
656         {"ADC 0 Mux", "Mic", "MIC1"},
657         {"ADC 1 Mux", "Dmic", "DMIC2"},
658         {"ADC 1 Mux", "RECMIX", "RECMIX"},
659         {"ADC 1 Mux", "Mic", "MIC1"},
660
661         {"ADC 0", NULL, "ADC 0 Mux"},
662         {"ADC 1", NULL, "ADC 1 Mux"},
663
664         {"AIF1TX", NULL, "ADC 0"},
665         {"AIF2TX", NULL, "ADC 1"},
666
667         {"DAC 0", NULL, "AIF1RX"},
668         {"DAC 1", NULL, "AIF2RX"},
669
670         {"Front", "DAC Switch", "DAC 0"},
671         {"Front", "RECMIX Switch", "RECMIX"},
672
673         {"Surround", NULL, "DAC 1"},
674
675         {"SPK Mux", "Front", "Front"},
676         {"SPK Mux", "Surround", "Surround"},
677
678         {"HPO Mux", "Front", "Front"},
679         {"HPO Mux", "Surround", "Surround"},
680
681         {"SPO", "Switch", "SPK Mux"},
682         {"HPO L", "Switch", "HPO Mux"},
683         {"HPO R", "Switch", "HPO Mux"},
684         {"HPO L", NULL, "HP Power"},
685         {"HPO R", NULL, "HP Power"},
686
687         {"SPOL", NULL, "SPO"},
688         {"SPOR", NULL, "SPO"},
689         {"HPO Pin", NULL, "HPO L"},
690         {"HPO Pin", NULL, "HPO R"},
691 };
692
693 static int rt286_hw_params(struct snd_pcm_substream *substream,
694                             struct snd_pcm_hw_params *params,
695                             struct snd_soc_dai *dai)
696 {
697         struct snd_soc_codec *codec = dai->codec;
698         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
699         unsigned int val = 0;
700         int d_len_code;
701
702         switch (params_rate(params)) {
703         /* bit 14 0:48K 1:44.1K */
704         case 44100:
705                 val |= 0x4000;
706                 break;
707         case 48000:
708                 break;
709         default:
710                 dev_err(codec->dev, "Unsupported sample rate %d\n",
711                                         params_rate(params));
712                 return -EINVAL;
713         }
714         switch (rt286->sys_clk) {
715         case 12288000:
716         case 24576000:
717                 if (params_rate(params) != 48000) {
718                         dev_err(codec->dev, "Sys_clk is not matched (%d %d)\n",
719                                         params_rate(params), rt286->sys_clk);
720                         return -EINVAL;
721                 }
722                 break;
723         case 11289600:
724         case 22579200:
725                 if (params_rate(params) != 44100) {
726                         dev_err(codec->dev, "Sys_clk is not matched (%d %d)\n",
727                                         params_rate(params), rt286->sys_clk);
728                         return -EINVAL;
729                 }
730                 break;
731         }
732
733         if (params_channels(params) <= 16) {
734                 /* bit 3:0 Number of Channel */
735                 val |= (params_channels(params) - 1);
736         } else {
737                 dev_err(codec->dev, "Unsupported channels %d\n",
738                                         params_channels(params));
739                 return -EINVAL;
740         }
741
742         d_len_code = 0;
743         switch (params_width(params)) {
744         /* bit 6:4 Bits per Sample */
745         case 16:
746                 d_len_code = 0;
747                 val |= (0x1 << 4);
748                 break;
749         case 32:
750                 d_len_code = 2;
751                 val |= (0x4 << 4);
752                 break;
753         case 20:
754                 d_len_code = 1;
755                 val |= (0x2 << 4);
756                 break;
757         case 24:
758                 d_len_code = 2;
759                 val |= (0x3 << 4);
760                 break;
761         case 8:
762                 d_len_code = 3;
763                 break;
764         default:
765                 return -EINVAL;
766         }
767
768         snd_soc_update_bits(codec,
769                 RT286_I2S_CTRL1, 0x0018, d_len_code << 3);
770         dev_dbg(codec->dev, "format val = 0x%x\n", val);
771
772         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
773                 snd_soc_update_bits(codec, RT286_DAC_FORMAT, 0x407f, val);
774         else
775                 snd_soc_update_bits(codec, RT286_ADC_FORMAT, 0x407f, val);
776
777         return 0;
778 }
779
780 static int rt286_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
781 {
782         struct snd_soc_codec *codec = dai->codec;
783
784         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
785         case SND_SOC_DAIFMT_CBM_CFM:
786                 snd_soc_update_bits(codec,
787                         RT286_I2S_CTRL1, 0x800, 0x800);
788                 break;
789         case SND_SOC_DAIFMT_CBS_CFS:
790                 snd_soc_update_bits(codec,
791                         RT286_I2S_CTRL1, 0x800, 0x0);
792                 break;
793         default:
794                 return -EINVAL;
795         }
796
797         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
798         case SND_SOC_DAIFMT_I2S:
799                 snd_soc_update_bits(codec,
800                         RT286_I2S_CTRL1, 0x300, 0x0);
801                 break;
802         case SND_SOC_DAIFMT_LEFT_J:
803                 snd_soc_update_bits(codec,
804                         RT286_I2S_CTRL1, 0x300, 0x1 << 8);
805                 break;
806         case SND_SOC_DAIFMT_DSP_A:
807                 snd_soc_update_bits(codec,
808                         RT286_I2S_CTRL1, 0x300, 0x2 << 8);
809                 break;
810         case SND_SOC_DAIFMT_DSP_B:
811                 snd_soc_update_bits(codec,
812                         RT286_I2S_CTRL1, 0x300, 0x3 << 8);
813                 break;
814         default:
815                 return -EINVAL;
816         }
817         /* bit 15 Stream Type 0:PCM 1:Non-PCM */
818         snd_soc_update_bits(codec, RT286_DAC_FORMAT, 0x8000, 0);
819         snd_soc_update_bits(codec, RT286_ADC_FORMAT, 0x8000, 0);
820
821         return 0;
822 }
823
824 static int rt286_set_dai_sysclk(struct snd_soc_dai *dai,
825                                 int clk_id, unsigned int freq, int dir)
826 {
827         struct snd_soc_codec *codec = dai->codec;
828         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
829
830         dev_dbg(codec->dev, "%s freq=%d\n", __func__, freq);
831
832         if (RT286_SCLK_S_MCLK == clk_id) {
833                 snd_soc_update_bits(codec,
834                         RT286_I2S_CTRL2, 0x0100, 0x0);
835                 snd_soc_update_bits(codec,
836                         RT286_PLL_CTRL1, 0x20, 0x20);
837         } else {
838                 snd_soc_update_bits(codec,
839                         RT286_I2S_CTRL2, 0x0100, 0x0100);
840                 snd_soc_update_bits(codec,
841                         RT286_PLL_CTRL, 0x4, 0x4);
842                 snd_soc_update_bits(codec,
843                         RT286_PLL_CTRL1, 0x20, 0x0);
844         }
845
846         switch (freq) {
847         case 19200000:
848                 if (RT286_SCLK_S_MCLK == clk_id) {
849                         dev_err(codec->dev, "Should not use MCLK\n");
850                         return -EINVAL;
851                 }
852                 snd_soc_update_bits(codec,
853                         RT286_I2S_CTRL2, 0x40, 0x40);
854                 break;
855         case 24000000:
856                 if (RT286_SCLK_S_MCLK == clk_id) {
857                         dev_err(codec->dev, "Should not use MCLK\n");
858                         return -EINVAL;
859                 }
860                 snd_soc_update_bits(codec,
861                         RT286_I2S_CTRL2, 0x40, 0x0);
862                 break;
863         case 12288000:
864         case 11289600:
865                 snd_soc_update_bits(codec,
866                         RT286_I2S_CTRL2, 0x8, 0x0);
867                 snd_soc_update_bits(codec,
868                         RT286_CLK_DIV, 0xfc1e, 0x0004);
869                 break;
870         case 24576000:
871         case 22579200:
872                 snd_soc_update_bits(codec,
873                         RT286_I2S_CTRL2, 0x8, 0x8);
874                 snd_soc_update_bits(codec,
875                         RT286_CLK_DIV, 0xfc1e, 0x5406);
876                 break;
877         default:
878                 dev_err(codec->dev, "Unsupported system clock\n");
879                 return -EINVAL;
880         }
881
882         rt286->sys_clk = freq;
883
884         return 0;
885 }
886
887 static int rt286_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
888 {
889         struct snd_soc_codec *codec = dai->codec;
890
891         dev_dbg(codec->dev, "%s ratio=%d\n", __func__, ratio);
892         if (50 == ratio)
893                 snd_soc_update_bits(codec,
894                         RT286_I2S_CTRL1, 0x1000, 0x1000);
895         else
896                 snd_soc_update_bits(codec,
897                         RT286_I2S_CTRL1, 0x1000, 0x0);
898
899
900         return 0;
901 }
902
903 static int rt286_set_bias_level(struct snd_soc_codec *codec,
904                                  enum snd_soc_bias_level level)
905 {
906         switch (level) {
907         case SND_SOC_BIAS_PREPARE:
908                 if (SND_SOC_BIAS_STANDBY == codec->dapm.bias_level) {
909                         snd_soc_write(codec,
910                                 RT286_SET_AUDIO_POWER, AC_PWRST_D0);
911                         snd_soc_update_bits(codec,
912                                 RT286_DC_GAIN, 0x200, 0x200);
913                 }
914                 break;
915
916         case SND_SOC_BIAS_ON:
917                 mdelay(10);
918                 break;
919
920         case SND_SOC_BIAS_STANDBY:
921                 snd_soc_write(codec,
922                         RT286_SET_AUDIO_POWER, AC_PWRST_D3);
923                 snd_soc_update_bits(codec,
924                         RT286_DC_GAIN, 0x200, 0x0);
925                 break;
926
927         default:
928                 break;
929         }
930         codec->dapm.bias_level = level;
931
932         return 0;
933 }
934
935 static irqreturn_t rt286_irq(int irq, void *data)
936 {
937         struct rt286_priv *rt286 = data;
938         bool hp = false;
939         bool mic = false;
940         int status = 0;
941
942         rt286_jack_detect(rt286, &hp, &mic);
943
944         /* Clear IRQ */
945         regmap_update_bits(rt286->regmap, RT286_IRQ_CTRL, 0x1, 0x1);
946
947         if (hp == true)
948                 status |= SND_JACK_HEADPHONE;
949
950         if (mic == true)
951                 status |= SND_JACK_MICROPHONE;
952
953         snd_soc_jack_report(rt286->jack, status,
954                 SND_JACK_MICROPHONE | SND_JACK_HEADPHONE);
955
956         pm_wakeup_event(&rt286->i2c->dev, 300);
957
958         return IRQ_HANDLED;
959 }
960
961 static int rt286_probe(struct snd_soc_codec *codec)
962 {
963         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
964
965         codec->dapm.bias_level = SND_SOC_BIAS_OFF;
966
967         if (rt286->i2c->irq) {
968                 regmap_update_bits(rt286->regmap,
969                                         RT286_IRQ_CTRL, 0x2, 0x2);
970
971                 INIT_DELAYED_WORK(&rt286->jack_detect_work,
972                                         rt286_jack_detect_work);
973                 schedule_delayed_work(&rt286->jack_detect_work,
974                                         msecs_to_jiffies(1250));
975         }
976
977         return 0;
978 }
979
980 static int rt286_remove(struct snd_soc_codec *codec)
981 {
982         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
983
984         cancel_delayed_work_sync(&rt286->jack_detect_work);
985
986         return 0;
987 }
988
989 #ifdef CONFIG_PM
990 static int rt286_suspend(struct snd_soc_codec *codec)
991 {
992         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
993
994         regcache_cache_only(rt286->regmap, true);
995         regcache_mark_dirty(rt286->regmap);
996
997         return 0;
998 }
999
1000 static int rt286_resume(struct snd_soc_codec *codec)
1001 {
1002         struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);
1003
1004         regcache_cache_only(rt286->regmap, false);
1005         rt286_index_sync(codec);
1006         regcache_sync(rt286->regmap);
1007
1008         return 0;
1009 }
1010 #else
1011 #define rt286_suspend NULL
1012 #define rt286_resume NULL
1013 #endif
1014
1015 #define RT286_STEREO_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
1016 #define RT286_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1017                         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
1018
1019 static const struct snd_soc_dai_ops rt286_aif_dai_ops = {
1020         .hw_params = rt286_hw_params,
1021         .set_fmt = rt286_set_dai_fmt,
1022         .set_sysclk = rt286_set_dai_sysclk,
1023         .set_bclk_ratio = rt286_set_bclk_ratio,
1024 };
1025
1026 static struct snd_soc_dai_driver rt286_dai[] = {
1027         {
1028                 .name = "rt286-aif1",
1029                 .id = RT286_AIF1,
1030                 .playback = {
1031                         .stream_name = "AIF1 Playback",
1032                         .channels_min = 1,
1033                         .channels_max = 2,
1034                         .rates = RT286_STEREO_RATES,
1035                         .formats = RT286_FORMATS,
1036                 },
1037                 .capture = {
1038                         .stream_name = "AIF1 Capture",
1039                         .channels_min = 1,
1040                         .channels_max = 2,
1041                         .rates = RT286_STEREO_RATES,
1042                         .formats = RT286_FORMATS,
1043                 },
1044                 .ops = &rt286_aif_dai_ops,
1045                 .symmetric_rates = 1,
1046         },
1047         {
1048                 .name = "rt286-aif2",
1049                 .id = RT286_AIF2,
1050                 .playback = {
1051                         .stream_name = "AIF2 Playback",
1052                         .channels_min = 1,
1053                         .channels_max = 2,
1054                         .rates = RT286_STEREO_RATES,
1055                         .formats = RT286_FORMATS,
1056                 },
1057                 .capture = {
1058                         .stream_name = "AIF2 Capture",
1059                         .channels_min = 1,
1060                         .channels_max = 2,
1061                         .rates = RT286_STEREO_RATES,
1062                         .formats = RT286_FORMATS,
1063                 },
1064                 .ops = &rt286_aif_dai_ops,
1065                 .symmetric_rates = 1,
1066         },
1067
1068 };
1069
1070 static struct snd_soc_codec_driver soc_codec_dev_rt286 = {
1071         .probe = rt286_probe,
1072         .remove = rt286_remove,
1073         .suspend = rt286_suspend,
1074         .resume = rt286_resume,
1075         .set_bias_level = rt286_set_bias_level,
1076         .idle_bias_off = true,
1077         .controls = rt286_snd_controls,
1078         .num_controls = ARRAY_SIZE(rt286_snd_controls),
1079         .dapm_widgets = rt286_dapm_widgets,
1080         .num_dapm_widgets = ARRAY_SIZE(rt286_dapm_widgets),
1081         .dapm_routes = rt286_dapm_routes,
1082         .num_dapm_routes = ARRAY_SIZE(rt286_dapm_routes),
1083 };
1084
1085 static const struct regmap_config rt286_regmap = {
1086         .reg_bits = 32,
1087         .val_bits = 32,
1088         .max_register = 0x02370100,
1089         .volatile_reg = rt286_volatile_register,
1090         .readable_reg = rt286_readable_register,
1091         .reg_write = rt286_hw_write,
1092         .reg_read = rt286_hw_read,
1093         .cache_type = REGCACHE_RBTREE,
1094         .reg_defaults = rt286_reg,
1095         .num_reg_defaults = ARRAY_SIZE(rt286_reg),
1096 };
1097
1098 static const struct i2c_device_id rt286_i2c_id[] = {
1099         {"rt286", 0},
1100         {}
1101 };
1102 MODULE_DEVICE_TABLE(i2c, rt286_i2c_id);
1103
1104 static const struct acpi_device_id rt286_acpi_match[] = {
1105         { "INT343A", 0 },
1106         {},
1107 };
1108 MODULE_DEVICE_TABLE(acpi, rt286_acpi_match);
1109
1110 static int rt286_i2c_probe(struct i2c_client *i2c,
1111                            const struct i2c_device_id *id)
1112 {
1113         struct rt286_platform_data *pdata = dev_get_platdata(&i2c->dev);
1114         struct rt286_priv *rt286;
1115         int i, ret;
1116
1117         rt286 = devm_kzalloc(&i2c->dev, sizeof(*rt286),
1118                                 GFP_KERNEL);
1119         if (NULL == rt286)
1120                 return -ENOMEM;
1121
1122         rt286->regmap = devm_regmap_init(&i2c->dev, NULL, i2c, &rt286_regmap);
1123         if (IS_ERR(rt286->regmap)) {
1124                 ret = PTR_ERR(rt286->regmap);
1125                 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
1126                         ret);
1127                 return ret;
1128         }
1129
1130         regmap_read(rt286->regmap,
1131                 RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &ret);
1132         if (ret != RT286_VENDOR_ID) {
1133                 dev_err(&i2c->dev,
1134                         "Device with ID register %x is not rt286\n", ret);
1135                 return -ENODEV;
1136         }
1137
1138         rt286->index_cache = rt286_index_def;
1139         rt286->i2c = i2c;
1140         i2c_set_clientdata(i2c, rt286);
1141
1142         if (pdata)
1143                 rt286->pdata = *pdata;
1144
1145         regmap_write(rt286->regmap, RT286_SET_AUDIO_POWER, AC_PWRST_D3);
1146
1147         for (i = 0; i < RT286_POWER_REG_LEN; i++)
1148                 regmap_write(rt286->regmap,
1149                         RT286_SET_POWER(rt286_support_power_controls[i]),
1150                         AC_PWRST_D1);
1151
1152         if (!rt286->pdata.cbj_en) {
1153                 regmap_write(rt286->regmap, RT286_CBJ_CTRL2, 0x0000);
1154                 regmap_write(rt286->regmap, RT286_MIC1_DET_CTRL, 0x0816);
1155                 regmap_write(rt286->regmap, RT286_MISC_CTRL1, 0x0000);
1156                 regmap_update_bits(rt286->regmap,
1157                                         RT286_CBJ_CTRL1, 0xf000, 0xb000);
1158         } else {
1159                 regmap_update_bits(rt286->regmap,
1160                                         RT286_CBJ_CTRL1, 0xf000, 0x5000);
1161         }
1162
1163         mdelay(10);
1164
1165         if (!rt286->pdata.gpio2_en)
1166                 regmap_write(rt286->regmap, RT286_SET_DMIC2_DEFAULT, 0x4000);
1167         else
1168                 regmap_write(rt286->regmap, RT286_SET_DMIC2_DEFAULT, 0);
1169
1170         mdelay(10);
1171
1172         /*Power down LDO2*/
1173         regmap_update_bits(rt286->regmap, RT286_POWER_CTRL2, 0x8, 0x0);
1174
1175         /*Set depop parameter*/
1176         regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL2, 0x403a, 0x401a);
1177         regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL3, 0xf777, 0x4737);
1178         regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL4, 0x00ff, 0x003f);
1179
1180         if (rt286->i2c->irq) {
1181                 ret = request_threaded_irq(rt286->i2c->irq, NULL, rt286_irq,
1182                         IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "rt286", rt286);
1183                 if (ret != 0) {
1184                         dev_err(&i2c->dev,
1185                                 "Failed to reguest IRQ: %d\n", ret);
1186                         return ret;
1187                 }
1188         }
1189
1190         ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_rt286,
1191                                      rt286_dai, ARRAY_SIZE(rt286_dai));
1192
1193         return ret;
1194 }
1195
1196 static int rt286_i2c_remove(struct i2c_client *i2c)
1197 {
1198         struct rt286_priv *rt286 = i2c_get_clientdata(i2c);
1199
1200         if (i2c->irq)
1201                 free_irq(i2c->irq, rt286);
1202         snd_soc_unregister_codec(&i2c->dev);
1203
1204         return 0;
1205 }
1206
1207
1208 static struct i2c_driver rt286_i2c_driver = {
1209         .driver = {
1210                    .name = "rt286",
1211                    .owner = THIS_MODULE,
1212                    .acpi_match_table = ACPI_PTR(rt286_acpi_match),
1213                    },
1214         .probe = rt286_i2c_probe,
1215         .remove = rt286_i2c_remove,
1216         .id_table = rt286_i2c_id,
1217 };
1218
1219 module_i2c_driver(rt286_i2c_driver);
1220
1221 MODULE_DESCRIPTION("ASoC RT286 driver");
1222 MODULE_AUTHOR("Bard Liao <bardliao@realtek.com>");
1223 MODULE_LICENSE("GPL");