I2C: Add helper macro for i2c_driver boilerplate
[zen-stable.git] / sound / soc / codecs / ak4641.c
blob77838586f3588ffc61960f70cfaea2a29b6bfccf
1 /*
2 * ak4641.c -- AK4641 ALSA Soc Audio driver
4 * Copyright (C) 2008 Harald Welte <laforge@gnufiish.org>
5 * Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru>
7 * Based on ak4535.c by Richard Purdie
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/delay.h>
17 #include <linux/gpio.h>
18 #include <linux/pm.h>
19 #include <linux/i2c.h>
20 #include <linux/platform_device.h>
21 #include <linux/slab.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/initval.h>
27 #include <sound/tlv.h>
28 #include <sound/ak4641.h>
30 #include "ak4641.h"
32 /* codec private data */
33 struct ak4641_priv {
34 unsigned int sysclk;
35 int deemph;
36 int playback_fs;
40 * ak4641 register cache
42 static const u8 ak4641_reg[AK4641_CACHEREGNUM] = {
43 0x00, 0x80, 0x00, 0x80,
44 0x02, 0x00, 0x11, 0x05,
45 0x00, 0x00, 0x36, 0x10,
46 0x00, 0x00, 0x57, 0x00,
47 0x88, 0x88, 0x08, 0x08
50 static const int deemph_settings[] = {44100, 0, 48000, 32000};
52 static int ak4641_set_deemph(struct snd_soc_codec *codec)
54 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
55 int i, best = 0;
57 for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) {
58 /* if deemphasis is on, select the nearest available rate */
59 if (ak4641->deemph && deemph_settings[i] != 0 &&
60 abs(deemph_settings[i] - ak4641->playback_fs) <
61 abs(deemph_settings[best] - ak4641->playback_fs))
62 best = i;
64 if (!ak4641->deemph && deemph_settings[i] == 0)
65 best = i;
68 dev_dbg(codec->dev, "Set deemphasis %d\n", best);
70 return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best);
73 static int ak4641_put_deemph(struct snd_kcontrol *kcontrol,
74 struct snd_ctl_elem_value *ucontrol)
76 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
77 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
78 int deemph = ucontrol->value.enumerated.item[0];
80 if (deemph > 1)
81 return -EINVAL;
83 ak4641->deemph = deemph;
85 return ak4641_set_deemph(codec);
88 static int ak4641_get_deemph(struct snd_kcontrol *kcontrol,
89 struct snd_ctl_elem_value *ucontrol)
91 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
92 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
94 ucontrol->value.enumerated.item[0] = ak4641->deemph;
95 return 0;
98 static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"};
99 static const char *ak4641_hp_out[] = {"Stereo", "Mono"};
100 static const char *ak4641_mic_select[] = {"Internal", "External"};
101 static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"};
104 static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0);
105 static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0);
106 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0);
107 static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0);
108 static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0);
109 static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0);
110 static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0);
111 static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0);
112 static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0);
115 static const struct soc_enum ak4641_mono_out_enum =
116 SOC_ENUM_SINGLE(AK4641_SIG1, 6, 2, ak4641_mono_out);
117 static const struct soc_enum ak4641_hp_out_enum =
118 SOC_ENUM_SINGLE(AK4641_MODE2, 2, 2, ak4641_hp_out);
119 static const struct soc_enum ak4641_mic_select_enum =
120 SOC_ENUM_SINGLE(AK4641_MIC, 1, 2, ak4641_mic_select);
121 static const struct soc_enum ak4641_mic_or_dac_enum =
122 SOC_ENUM_SINGLE(AK4641_BTIF, 4, 2, ak4641_mic_or_dac);
124 static const struct snd_kcontrol_new ak4641_snd_controls[] = {
125 SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum),
126 SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1,
127 mono_gain_tlv),
128 SOC_ENUM("Headphone Output", ak4641_hp_out_enum),
129 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
130 ak4641_get_deemph, ak4641_put_deemph),
132 SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv),
134 SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0),
135 SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0),
136 SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0),
138 SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0),
140 SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv),
141 SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0),
142 SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0),
144 SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv),
146 SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT,
147 AK4641_RATT, 0, 255, 1, master_tlv),
149 SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv),
151 SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0),
152 SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv),
153 SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv),
154 SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv),
155 SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv),
156 SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv),
159 /* Mono 1 Mixer */
160 static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = {
161 SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0,
162 mic_mono_sidetone_tlv),
163 SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0),
164 SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0),
167 /* Stereo Mixer */
168 static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = {
169 SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0,
170 mic_stereo_sidetone_tlv),
171 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0),
172 SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0),
173 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0),
176 /* Input Mixer */
177 static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = {
178 SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0),
179 SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0),
182 /* Mic mux */
183 static const struct snd_kcontrol_new ak4641_mic_mux_control =
184 SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum);
186 /* Input mux */
187 static const struct snd_kcontrol_new ak4641_input_mux_control =
188 SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum);
190 /* mono 2 switch */
191 static const struct snd_kcontrol_new ak4641_mono2_control =
192 SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0);
194 /* ak4641 dapm widgets */
195 static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
196 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
197 &ak4641_stereo_mixer_controls[0],
198 ARRAY_SIZE(ak4641_stereo_mixer_controls)),
199 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
200 &ak4641_mono1_mixer_controls[0],
201 ARRAY_SIZE(ak4641_mono1_mixer_controls)),
202 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
203 &ak4641_input_mixer_controls[0],
204 ARRAY_SIZE(ak4641_input_mixer_controls)),
205 SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0,
206 &ak4641_mic_mux_control),
207 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
208 &ak4641_input_mux_control),
209 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
210 &ak4641_mono2_control),
212 SND_SOC_DAPM_OUTPUT("LOUT"),
213 SND_SOC_DAPM_OUTPUT("ROUT"),
214 SND_SOC_DAPM_OUTPUT("MOUT1"),
215 SND_SOC_DAPM_OUTPUT("MOUT2"),
216 SND_SOC_DAPM_OUTPUT("MICOUT"),
218 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0),
219 SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0),
220 SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0),
221 SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0),
222 SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0),
224 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0),
225 SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0),
227 SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0),
228 SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0),
230 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0),
231 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0),
233 SND_SOC_DAPM_INPUT("MICIN"),
234 SND_SOC_DAPM_INPUT("MICEXT"),
235 SND_SOC_DAPM_INPUT("AUX"),
236 SND_SOC_DAPM_INPUT("AIN"),
239 static const struct snd_soc_dapm_route ak4641_audio_map[] = {
240 /* Stereo Mixer */
241 {"Stereo Mixer", "Playback Switch", "DAC"},
242 {"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"},
243 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
245 /* Mono 1 Mixer */
246 {"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"},
247 {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
249 /* Mic */
250 {"Mic", NULL, "AIN"},
251 {"Mic Mux", "Internal", "Mic Int Bias"},
252 {"Mic Mux", "External", "Mic Ext Bias"},
253 {"Mic Int Bias", NULL, "MICIN"},
254 {"Mic Ext Bias", NULL, "MICEXT"},
255 {"MICOUT", NULL, "Mic Mux"},
257 /* Input Mux */
258 {"Input Mux", "Microphone", "Mic"},
259 {"Input Mux", "Voice DAC", "Voice DAC"},
261 /* Line Out */
262 {"LOUT", NULL, "Line Out"},
263 {"ROUT", NULL, "Line Out"},
264 {"Line Out", NULL, "Stereo Mixer"},
266 /* Mono 1 Out */
267 {"MOUT1", NULL, "Mono Out"},
268 {"Mono Out", NULL, "Mono1 Mixer"},
270 /* Mono 2 Out */
271 {"MOUT2", NULL, "Mono 2 Enable"},
272 {"Mono 2 Enable", "Switch", "Mono Out 2"},
273 {"Mono Out 2", NULL, "Stereo Mixer"},
275 {"Voice ADC", NULL, "Mono 2 Enable"},
277 /* Aux In */
278 {"AUX In", NULL, "AUX"},
280 /* ADC */
281 {"ADC", NULL, "Input Mixer"},
282 {"Input Mixer", "Mic Capture Switch", "Mic"},
283 {"Input Mixer", "Aux Capture Switch", "AUX In"},
286 static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai,
287 int clk_id, unsigned int freq, int dir)
289 struct snd_soc_codec *codec = codec_dai->codec;
290 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
292 ak4641->sysclk = freq;
293 return 0;
296 static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream,
297 struct snd_pcm_hw_params *params,
298 struct snd_soc_dai *dai)
300 struct snd_soc_pcm_runtime *rtd = substream->private_data;
301 struct snd_soc_codec *codec = rtd->codec;
302 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
303 int rate = params_rate(params), fs = 256;
304 u8 mode2;
306 if (rate)
307 fs = ak4641->sysclk / rate;
308 else
309 return -EINVAL;
311 /* set fs */
312 switch (fs) {
313 case 1024:
314 mode2 = (0x2 << 5);
315 break;
316 case 512:
317 mode2 = (0x1 << 5);
318 break;
319 case 256:
320 mode2 = (0x0 << 5);
321 break;
322 default:
323 dev_err(codec->dev, "Error: unsupported fs=%d\n", fs);
324 return -EINVAL;
327 snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2);
329 /* Update de-emphasis filter for the new rate */
330 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
331 ak4641->playback_fs = rate;
332 ak4641_set_deemph(codec);
335 return 0;
338 static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
339 unsigned int fmt)
341 struct snd_soc_codec *codec = codec_dai->codec;
342 u8 btif;
344 /* interface format */
345 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
346 case SND_SOC_DAIFMT_I2S:
347 btif = (0x3 << 5);
348 break;
349 case SND_SOC_DAIFMT_LEFT_J:
350 btif = (0x2 << 5);
351 break;
352 case SND_SOC_DAIFMT_DSP_A: /* MSB after FRM */
353 btif = (0x0 << 5);
354 break;
355 case SND_SOC_DAIFMT_DSP_B: /* MSB during FRM */
356 btif = (0x1 << 5);
357 break;
358 default:
359 return -EINVAL;
362 return snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif);
365 static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
366 unsigned int fmt)
368 struct snd_soc_codec *codec = codec_dai->codec;
369 u8 mode1 = 0;
371 /* interface format */
372 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
373 case SND_SOC_DAIFMT_I2S:
374 mode1 = 0x02;
375 break;
376 case SND_SOC_DAIFMT_LEFT_J:
377 mode1 = 0x01;
378 break;
379 default:
380 return -EINVAL;
383 return snd_soc_write(codec, AK4641_MODE1, mode1);
386 static int ak4641_mute(struct snd_soc_dai *dai, int mute)
388 struct snd_soc_codec *codec = dai->codec;
390 return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0);
393 static int ak4641_set_bias_level(struct snd_soc_codec *codec,
394 enum snd_soc_bias_level level)
396 struct ak4641_platform_data *pdata = codec->dev->platform_data;
397 int ret;
399 switch (level) {
400 case SND_SOC_BIAS_ON:
401 /* unmute */
402 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0);
403 break;
404 case SND_SOC_BIAS_PREPARE:
405 /* mute */
406 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20);
407 break;
408 case SND_SOC_BIAS_STANDBY:
409 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
410 if (pdata && gpio_is_valid(pdata->gpio_power))
411 gpio_set_value(pdata->gpio_power, 1);
412 mdelay(1);
413 if (pdata && gpio_is_valid(pdata->gpio_npdn))
414 gpio_set_value(pdata->gpio_npdn, 1);
415 mdelay(1);
417 ret = snd_soc_cache_sync(codec);
418 if (ret) {
419 dev_err(codec->dev,
420 "Failed to sync cache: %d\n", ret);
421 return ret;
424 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80);
425 snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0);
426 break;
427 case SND_SOC_BIAS_OFF:
428 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0);
429 if (pdata && gpio_is_valid(pdata->gpio_npdn))
430 gpio_set_value(pdata->gpio_npdn, 0);
431 if (pdata && gpio_is_valid(pdata->gpio_power))
432 gpio_set_value(pdata->gpio_power, 0);
433 codec->cache_sync = 1;
434 break;
436 codec->dapm.bias_level = level;
437 return 0;
440 #define AK4641_RATES (SNDRV_PCM_RATE_8000_48000)
441 #define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
442 SNDRV_PCM_RATE_16000)
443 #define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
445 static struct snd_soc_dai_ops ak4641_i2s_dai_ops = {
446 .hw_params = ak4641_i2s_hw_params,
447 .set_fmt = ak4641_i2s_set_dai_fmt,
448 .digital_mute = ak4641_mute,
449 .set_sysclk = ak4641_set_dai_sysclk,
452 static struct snd_soc_dai_ops ak4641_pcm_dai_ops = {
453 .hw_params = NULL, /* rates are controlled by BT chip */
454 .set_fmt = ak4641_pcm_set_dai_fmt,
455 .digital_mute = ak4641_mute,
456 .set_sysclk = ak4641_set_dai_sysclk,
459 static struct snd_soc_dai_driver ak4641_dai[] = {
461 .name = "ak4641-hifi",
462 .id = 1,
463 .playback = {
464 .stream_name = "HiFi Playback",
465 .channels_min = 1,
466 .channels_max = 2,
467 .rates = AK4641_RATES,
468 .formats = AK4641_FORMATS,
470 .capture = {
471 .stream_name = "HiFi Capture",
472 .channels_min = 1,
473 .channels_max = 2,
474 .rates = AK4641_RATES,
475 .formats = AK4641_FORMATS,
477 .ops = &ak4641_i2s_dai_ops,
478 .symmetric_rates = 1,
481 .name = "ak4641-voice",
482 .id = 1,
483 .playback = {
484 .stream_name = "Voice Playback",
485 .channels_min = 1,
486 .channels_max = 1,
487 .rates = AK4641_RATES_BT,
488 .formats = AK4641_FORMATS,
490 .capture = {
491 .stream_name = "Voice Capture",
492 .channels_min = 1,
493 .channels_max = 1,
494 .rates = AK4641_RATES_BT,
495 .formats = AK4641_FORMATS,
497 .ops = &ak4641_pcm_dai_ops,
498 .symmetric_rates = 1,
502 static int ak4641_suspend(struct snd_soc_codec *codec, pm_message_t state)
504 ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
505 return 0;
508 static int ak4641_resume(struct snd_soc_codec *codec)
510 ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
511 return 0;
514 static int ak4641_probe(struct snd_soc_codec *codec)
516 struct ak4641_platform_data *pdata = codec->dev->platform_data;
517 int ret;
520 if (pdata) {
521 if (gpio_is_valid(pdata->gpio_power)) {
522 ret = gpio_request_one(pdata->gpio_power,
523 GPIOF_OUT_INIT_LOW, "ak4641 power");
524 if (ret)
525 goto err_out;
527 if (gpio_is_valid(pdata->gpio_npdn)) {
528 ret = gpio_request_one(pdata->gpio_npdn,
529 GPIOF_OUT_INIT_LOW, "ak4641 npdn");
530 if (ret)
531 goto err_gpio;
533 udelay(1); /* > 150 ns */
534 gpio_set_value(pdata->gpio_npdn, 1);
538 ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
539 if (ret != 0) {
540 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
541 goto err_register;
544 /* power on device */
545 ak4641_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
547 return 0;
549 err_register:
550 if (pdata) {
551 if (gpio_is_valid(pdata->gpio_power))
552 gpio_set_value(pdata->gpio_power, 0);
553 if (gpio_is_valid(pdata->gpio_npdn))
554 gpio_free(pdata->gpio_npdn);
556 err_gpio:
557 if (pdata && gpio_is_valid(pdata->gpio_power))
558 gpio_free(pdata->gpio_power);
559 err_out:
560 return ret;
563 static int ak4641_remove(struct snd_soc_codec *codec)
565 struct ak4641_platform_data *pdata = codec->dev->platform_data;
567 ak4641_set_bias_level(codec, SND_SOC_BIAS_OFF);
569 if (pdata) {
570 if (gpio_is_valid(pdata->gpio_power)) {
571 gpio_set_value(pdata->gpio_power, 0);
572 gpio_free(pdata->gpio_power);
574 if (gpio_is_valid(pdata->gpio_npdn))
575 gpio_free(pdata->gpio_npdn);
577 return 0;
581 static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
582 .probe = ak4641_probe,
583 .remove = ak4641_remove,
584 .suspend = ak4641_suspend,
585 .resume = ak4641_resume,
586 .controls = ak4641_snd_controls,
587 .num_controls = ARRAY_SIZE(ak4641_snd_controls),
588 .dapm_widgets = ak4641_dapm_widgets,
589 .num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets),
590 .dapm_routes = ak4641_audio_map,
591 .num_dapm_routes = ARRAY_SIZE(ak4641_audio_map),
592 .set_bias_level = ak4641_set_bias_level,
593 .reg_cache_size = ARRAY_SIZE(ak4641_reg),
594 .reg_word_size = sizeof(u8),
595 .reg_cache_default = ak4641_reg,
596 .reg_cache_step = 1,
600 static int __devinit ak4641_i2c_probe(struct i2c_client *i2c,
601 const struct i2c_device_id *id)
603 struct ak4641_priv *ak4641;
604 int ret;
606 ak4641 = kzalloc(sizeof(struct ak4641_priv), GFP_KERNEL);
607 if (!ak4641)
608 return -ENOMEM;
610 i2c_set_clientdata(i2c, ak4641);
612 ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641,
613 ak4641_dai, ARRAY_SIZE(ak4641_dai));
614 if (ret < 0)
615 kfree(ak4641);
617 return ret;
620 static int __devexit ak4641_i2c_remove(struct i2c_client *i2c)
622 snd_soc_unregister_codec(&i2c->dev);
623 kfree(i2c_get_clientdata(i2c));
624 return 0;
627 static const struct i2c_device_id ak4641_i2c_id[] = {
628 { "ak4641", 0 },
631 MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);
633 static struct i2c_driver ak4641_i2c_driver = {
634 .driver = {
635 .name = "ak4641",
636 .owner = THIS_MODULE,
638 .probe = ak4641_i2c_probe,
639 .remove = __devexit_p(ak4641_i2c_remove),
640 .id_table = ak4641_i2c_id,
643 static int __init ak4641_modinit(void)
645 int ret;
647 ret = i2c_add_driver(&ak4641_i2c_driver);
648 if (ret != 0)
649 pr_err("Failed to register AK4641 I2C driver: %d\n", ret);
651 return ret;
653 module_init(ak4641_modinit);
655 static void __exit ak4641_exit(void)
657 i2c_del_driver(&ak4641_i2c_driver);
659 module_exit(ak4641_exit);
661 MODULE_DESCRIPTION("SoC AK4641 driver");
662 MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");
663 MODULE_LICENSE("GPL");