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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/regmap.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>
29
30#include "ak4641.h"
31
32
33struct ak4641_priv {
34 struct regmap *regmap;
35 unsigned int sysclk;
36 int deemph;
37 int playback_fs;
38};
39
40
41
42
43static const struct reg_default ak4641_reg_defaults[] = {
44 { 0, 0x00 }, { 1, 0x80 }, { 2, 0x00 }, { 3, 0x80 },
45 { 4, 0x02 }, { 5, 0x00 }, { 6, 0x11 }, { 7, 0x05 },
46 { 8, 0x00 }, { 9, 0x00 }, { 10, 0x36 }, { 11, 0x10 },
47 { 12, 0x00 }, { 13, 0x00 }, { 14, 0x57 }, { 15, 0x00 },
48 { 16, 0x88 }, { 17, 0x88 }, { 18, 0x08 }, { 19, 0x08 }
49};
50
51static const int deemph_settings[] = {44100, 0, 48000, 32000};
52
53static int ak4641_set_deemph(struct snd_soc_codec *codec)
54{
55 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
56 int i, best = 0;
57
58 for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) {
59
60 if (ak4641->deemph && deemph_settings[i] != 0 &&
61 abs(deemph_settings[i] - ak4641->playback_fs) <
62 abs(deemph_settings[best] - ak4641->playback_fs))
63 best = i;
64
65 if (!ak4641->deemph && deemph_settings[i] == 0)
66 best = i;
67 }
68
69 dev_dbg(codec->dev, "Set deemphasis %d\n", best);
70
71 return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best);
72}
73
74static int ak4641_put_deemph(struct snd_kcontrol *kcontrol,
75 struct snd_ctl_elem_value *ucontrol)
76{
77 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
78 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
79 int deemph = ucontrol->value.integer.value[0];
80
81 if (deemph > 1)
82 return -EINVAL;
83
84 ak4641->deemph = deemph;
85
86 return ak4641_set_deemph(codec);
87}
88
89static int ak4641_get_deemph(struct snd_kcontrol *kcontrol,
90 struct snd_ctl_elem_value *ucontrol)
91{
92 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
93 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
94
95 ucontrol->value.integer.value[0] = ak4641->deemph;
96 return 0;
97};
98
99static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"};
100static const char *ak4641_hp_out[] = {"Stereo", "Mono"};
101static const char *ak4641_mic_select[] = {"Internal", "External"};
102static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"};
103
104
105static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0);
106static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0);
107static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0);
108static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0);
109static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0);
110static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0);
111static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0);
112static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0);
113static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0);
114
115
116static SOC_ENUM_SINGLE_DECL(ak4641_mono_out_enum,
117 AK4641_SIG1, 6, ak4641_mono_out);
118static SOC_ENUM_SINGLE_DECL(ak4641_hp_out_enum,
119 AK4641_MODE2, 2, ak4641_hp_out);
120static SOC_ENUM_SINGLE_DECL(ak4641_mic_select_enum,
121 AK4641_MIC, 1, ak4641_mic_select);
122static SOC_ENUM_SINGLE_DECL(ak4641_mic_or_dac_enum,
123 AK4641_BTIF, 4, ak4641_mic_or_dac);
124
125static const struct snd_kcontrol_new ak4641_snd_controls[] = {
126 SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum),
127 SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1,
128 mono_gain_tlv),
129 SOC_ENUM("Headphone Output", ak4641_hp_out_enum),
130 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
131 ak4641_get_deemph, ak4641_put_deemph),
132
133 SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv),
134
135 SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0),
136 SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0),
137 SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0),
138
139 SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0),
140
141 SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv),
142 SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0),
143 SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0),
144
145 SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv),
146
147 SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT,
148 AK4641_RATT, 0, 255, 1, master_tlv),
149
150 SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv),
151
152 SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0),
153 SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv),
154 SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv),
155 SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv),
156 SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv),
157 SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv),
158};
159
160
161static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = {
162 SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0,
163 mic_mono_sidetone_tlv),
164 SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0),
165 SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0),
166};
167
168
169static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = {
170 SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0,
171 mic_stereo_sidetone_tlv),
172 SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0),
173 SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0),
174 SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0),
175};
176
177
178static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = {
179 SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0),
180 SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0),
181};
182
183
184static const struct snd_kcontrol_new ak4641_mic_mux_control =
185 SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum);
186
187
188static const struct snd_kcontrol_new ak4641_input_mux_control =
189 SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum);
190
191
192static const struct snd_kcontrol_new ak4641_mono2_control =
193 SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0);
194
195
196static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
197 SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
198 &ak4641_stereo_mixer_controls[0],
199 ARRAY_SIZE(ak4641_stereo_mixer_controls)),
200 SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
201 &ak4641_mono1_mixer_controls[0],
202 ARRAY_SIZE(ak4641_mono1_mixer_controls)),
203 SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
204 &ak4641_input_mixer_controls[0],
205 ARRAY_SIZE(ak4641_input_mixer_controls)),
206 SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0,
207 &ak4641_mic_mux_control),
208 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
209 &ak4641_input_mux_control),
210 SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
211 &ak4641_mono2_control),
212
213 SND_SOC_DAPM_OUTPUT("LOUT"),
214 SND_SOC_DAPM_OUTPUT("ROUT"),
215 SND_SOC_DAPM_OUTPUT("MOUT1"),
216 SND_SOC_DAPM_OUTPUT("MOUT2"),
217 SND_SOC_DAPM_OUTPUT("MICOUT"),
218
219 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0),
220 SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0),
221 SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0),
222 SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0),
223 SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0),
224
225 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0),
226 SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0),
227
228 SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0),
229 SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0),
230
231 SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0),
232 SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0),
233
234 SND_SOC_DAPM_INPUT("MICIN"),
235 SND_SOC_DAPM_INPUT("MICEXT"),
236 SND_SOC_DAPM_INPUT("AUX"),
237 SND_SOC_DAPM_INPUT("AIN"),
238};
239
240static const struct snd_soc_dapm_route ak4641_audio_map[] = {
241
242 {"Stereo Mixer", "Playback Switch", "DAC"},
243 {"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"},
244 {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
245
246
247 {"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"},
248 {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
249
250
251 {"Mic", NULL, "AIN"},
252 {"Mic Mux", "Internal", "Mic Int Bias"},
253 {"Mic Mux", "External", "Mic Ext Bias"},
254 {"Mic Int Bias", NULL, "MICIN"},
255 {"Mic Ext Bias", NULL, "MICEXT"},
256 {"MICOUT", NULL, "Mic Mux"},
257
258
259 {"Input Mux", "Microphone", "Mic"},
260 {"Input Mux", "Voice DAC", "Voice DAC"},
261
262
263 {"LOUT", NULL, "Line Out"},
264 {"ROUT", NULL, "Line Out"},
265 {"Line Out", NULL, "Stereo Mixer"},
266
267
268 {"MOUT1", NULL, "Mono Out"},
269 {"Mono Out", NULL, "Mono1 Mixer"},
270
271
272 {"MOUT2", NULL, "Mono 2 Enable"},
273 {"Mono 2 Enable", "Switch", "Mono Out 2"},
274 {"Mono Out 2", NULL, "Stereo Mixer"},
275
276 {"Voice ADC", NULL, "Mono 2 Enable"},
277
278
279 {"AUX In", NULL, "AUX"},
280
281
282 {"ADC", NULL, "Input Mixer"},
283 {"Input Mixer", "Mic Capture Switch", "Mic"},
284 {"Input Mixer", "Aux Capture Switch", "AUX In"},
285};
286
287static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai,
288 int clk_id, unsigned int freq, int dir)
289{
290 struct snd_soc_codec *codec = codec_dai->codec;
291 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
292
293 ak4641->sysclk = freq;
294 return 0;
295}
296
297static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream,
298 struct snd_pcm_hw_params *params,
299 struct snd_soc_dai *dai)
300{
301 struct snd_soc_codec *codec = dai->codec;
302 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
303 int rate = params_rate(params), fs = 256;
304 u8 mode2;
305
306 if (rate)
307 fs = ak4641->sysclk / rate;
308 else
309 return -EINVAL;
310
311
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;
325 }
326
327 snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2);
328
329
330 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
331 ak4641->playback_fs = rate;
332 ak4641_set_deemph(codec);
333 }
334
335 return 0;
336}
337
338static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
339 unsigned int fmt)
340{
341 struct snd_soc_codec *codec = codec_dai->codec;
342 u8 btif;
343 int ret;
344
345
346 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
347 case SND_SOC_DAIFMT_I2S:
348 btif = (0x3 << 5);
349 break;
350 case SND_SOC_DAIFMT_LEFT_J:
351 btif = (0x2 << 5);
352 break;
353 case SND_SOC_DAIFMT_DSP_A:
354 btif = (0x0 << 5);
355 break;
356 case SND_SOC_DAIFMT_DSP_B:
357 btif = (0x1 << 5);
358 break;
359 default:
360 return -EINVAL;
361 }
362
363 ret = snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif);
364 if (ret < 0)
365 return ret;
366
367 return 0;
368}
369
370static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
371 unsigned int fmt)
372{
373 struct snd_soc_codec *codec = codec_dai->codec;
374 u8 mode1 = 0;
375
376
377 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
378 case SND_SOC_DAIFMT_I2S:
379 mode1 = 0x02;
380 break;
381 case SND_SOC_DAIFMT_LEFT_J:
382 mode1 = 0x01;
383 break;
384 default:
385 return -EINVAL;
386 }
387
388 return snd_soc_write(codec, AK4641_MODE1, mode1);
389}
390
391static int ak4641_mute(struct snd_soc_dai *dai, int mute)
392{
393 struct snd_soc_codec *codec = dai->codec;
394
395 return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0);
396}
397
398static int ak4641_set_bias_level(struct snd_soc_codec *codec,
399 enum snd_soc_bias_level level)
400{
401 struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
402 struct ak4641_platform_data *pdata = codec->dev->platform_data;
403 int ret;
404
405 switch (level) {
406 case SND_SOC_BIAS_ON:
407
408 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0);
409 break;
410 case SND_SOC_BIAS_PREPARE:
411
412 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20);
413 break;
414 case SND_SOC_BIAS_STANDBY:
415 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
416 if (pdata && gpio_is_valid(pdata->gpio_power))
417 gpio_set_value(pdata->gpio_power, 1);
418 mdelay(1);
419 if (pdata && gpio_is_valid(pdata->gpio_npdn))
420 gpio_set_value(pdata->gpio_npdn, 1);
421 mdelay(1);
422
423 ret = regcache_sync(ak4641->regmap);
424 if (ret) {
425 dev_err(codec->dev,
426 "Failed to sync cache: %d\n", ret);
427 return ret;
428 }
429 }
430 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80);
431 snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0);
432 break;
433 case SND_SOC_BIAS_OFF:
434 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0);
435 if (pdata && gpio_is_valid(pdata->gpio_npdn))
436 gpio_set_value(pdata->gpio_npdn, 0);
437 if (pdata && gpio_is_valid(pdata->gpio_power))
438 gpio_set_value(pdata->gpio_power, 0);
439 regcache_mark_dirty(ak4641->regmap);
440 break;
441 }
442 return 0;
443}
444
445#define AK4641_RATES (SNDRV_PCM_RATE_8000_48000)
446#define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
447 SNDRV_PCM_RATE_16000)
448#define AK4641_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
449
450static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = {
451 .hw_params = ak4641_i2s_hw_params,
452 .set_fmt = ak4641_i2s_set_dai_fmt,
453 .digital_mute = ak4641_mute,
454 .set_sysclk = ak4641_set_dai_sysclk,
455};
456
457static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = {
458 .hw_params = NULL,
459 .set_fmt = ak4641_pcm_set_dai_fmt,
460 .digital_mute = ak4641_mute,
461 .set_sysclk = ak4641_set_dai_sysclk,
462};
463
464static struct snd_soc_dai_driver ak4641_dai[] = {
465{
466 .name = "ak4641-hifi",
467 .id = 1,
468 .playback = {
469 .stream_name = "HiFi Playback",
470 .channels_min = 1,
471 .channels_max = 2,
472 .rates = AK4641_RATES,
473 .formats = AK4641_FORMATS,
474 },
475 .capture = {
476 .stream_name = "HiFi Capture",
477 .channels_min = 1,
478 .channels_max = 2,
479 .rates = AK4641_RATES,
480 .formats = AK4641_FORMATS,
481 },
482 .ops = &ak4641_i2s_dai_ops,
483 .symmetric_rates = 1,
484},
485{
486 .name = "ak4641-voice",
487 .id = 1,
488 .playback = {
489 .stream_name = "Voice Playback",
490 .channels_min = 1,
491 .channels_max = 1,
492 .rates = AK4641_RATES_BT,
493 .formats = AK4641_FORMATS,
494 },
495 .capture = {
496 .stream_name = "Voice Capture",
497 .channels_min = 1,
498 .channels_max = 1,
499 .rates = AK4641_RATES_BT,
500 .formats = AK4641_FORMATS,
501 },
502 .ops = &ak4641_pcm_dai_ops,
503 .symmetric_rates = 1,
504},
505};
506
507static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
508 .component_driver = {
509 .controls = ak4641_snd_controls,
510 .num_controls = ARRAY_SIZE(ak4641_snd_controls),
511 .dapm_widgets = ak4641_dapm_widgets,
512 .num_dapm_widgets = ARRAY_SIZE(ak4641_dapm_widgets),
513 .dapm_routes = ak4641_audio_map,
514 .num_dapm_routes = ARRAY_SIZE(ak4641_audio_map),
515 },
516 .set_bias_level = ak4641_set_bias_level,
517 .suspend_bias_off = true,
518};
519
520static const struct regmap_config ak4641_regmap = {
521 .reg_bits = 8,
522 .val_bits = 8,
523
524 .max_register = AK4641_BTIF,
525 .reg_defaults = ak4641_reg_defaults,
526 .num_reg_defaults = ARRAY_SIZE(ak4641_reg_defaults),
527 .cache_type = REGCACHE_RBTREE,
528};
529
530static int ak4641_i2c_probe(struct i2c_client *i2c,
531 const struct i2c_device_id *id)
532{
533 struct ak4641_platform_data *pdata = i2c->dev.platform_data;
534 struct ak4641_priv *ak4641;
535 int ret;
536
537 ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv),
538 GFP_KERNEL);
539 if (!ak4641)
540 return -ENOMEM;
541
542 ak4641->regmap = devm_regmap_init_i2c(i2c, &ak4641_regmap);
543 if (IS_ERR(ak4641->regmap))
544 return PTR_ERR(ak4641->regmap);
545
546 if (pdata) {
547 if (gpio_is_valid(pdata->gpio_power)) {
548 ret = gpio_request_one(pdata->gpio_power,
549 GPIOF_OUT_INIT_LOW, "ak4641 power");
550 if (ret)
551 goto err_out;
552 }
553 if (gpio_is_valid(pdata->gpio_npdn)) {
554 ret = gpio_request_one(pdata->gpio_npdn,
555 GPIOF_OUT_INIT_LOW, "ak4641 npdn");
556 if (ret)
557 goto err_gpio;
558
559 udelay(1);
560 gpio_set_value(pdata->gpio_npdn, 1);
561 }
562 }
563
564 i2c_set_clientdata(i2c, ak4641);
565
566 ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641,
567 ak4641_dai, ARRAY_SIZE(ak4641_dai));
568 if (ret != 0)
569 goto err_gpio2;
570
571 return 0;
572
573err_gpio2:
574 if (pdata) {
575 if (gpio_is_valid(pdata->gpio_power))
576 gpio_set_value(pdata->gpio_power, 0);
577 if (gpio_is_valid(pdata->gpio_npdn))
578 gpio_free(pdata->gpio_npdn);
579 }
580err_gpio:
581 if (pdata && gpio_is_valid(pdata->gpio_power))
582 gpio_free(pdata->gpio_power);
583err_out:
584 return ret;
585}
586
587static int ak4641_i2c_remove(struct i2c_client *i2c)
588{
589 struct ak4641_platform_data *pdata = i2c->dev.platform_data;
590
591 snd_soc_unregister_codec(&i2c->dev);
592
593 if (pdata) {
594 if (gpio_is_valid(pdata->gpio_power)) {
595 gpio_set_value(pdata->gpio_power, 0);
596 gpio_free(pdata->gpio_power);
597 }
598 if (gpio_is_valid(pdata->gpio_npdn))
599 gpio_free(pdata->gpio_npdn);
600 }
601
602 return 0;
603}
604
605static const struct i2c_device_id ak4641_i2c_id[] = {
606 { "ak4641", 0 },
607 { }
608};
609MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);
610
611static struct i2c_driver ak4641_i2c_driver = {
612 .driver = {
613 .name = "ak4641",
614 },
615 .probe = ak4641_i2c_probe,
616 .remove = ak4641_i2c_remove,
617 .id_table = ak4641_i2c_id,
618};
619
620module_i2c_driver(ak4641_i2c_driver);
621
622MODULE_DESCRIPTION("SoC AK4641 driver");
623MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");
624MODULE_LICENSE("GPL");
625
