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2aceefef IM |
1 | /* |
2 | * wm9705.c -- ALSA Soc WM9705 codec support | |
3 | * | |
4 | * Copyright 2008 Ian Molton <spyro@f2s.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; Version 2 of the License only. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/init.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/device.h> | |
16 | #include <sound/core.h> | |
17 | #include <sound/pcm.h> | |
18 | #include <sound/ac97_codec.h> | |
19 | #include <sound/initval.h> | |
20 | #include <sound/soc.h> | |
21 | #include <sound/soc-dapm.h> | |
22 | ||
01e097d6 MB |
23 | #include "wm9705.h" |
24 | ||
2aceefef IM |
25 | /* |
26 | * WM9705 register cache | |
27 | */ | |
28 | static const u16 wm9705_reg[] = { | |
29 | 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */ | |
30 | 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */ | |
31 | 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */ | |
32 | 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */ | |
33 | 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */ | |
34 | 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */ | |
35 | 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */ | |
36 | 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */ | |
37 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */ | |
38 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */ | |
39 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */ | |
40 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */ | |
41 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */ | |
42 | 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */ | |
43 | 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */ | |
44 | 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */ | |
45 | }; | |
46 | ||
47 | static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = { | |
48 | SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), | |
49 | SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), | |
50 | SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), | |
51 | SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), | |
52 | SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), | |
53 | SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), | |
54 | SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), | |
55 | SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), | |
56 | SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1), | |
57 | SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1), | |
58 | SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1), | |
59 | SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1), | |
60 | SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1), | |
61 | SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0), | |
927b0aea IM |
62 | SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0), |
63 | SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1), | |
2aceefef IM |
64 | }; |
65 | ||
66 | static const char *wm9705_mic[] = {"Mic 1", "Mic 2"}; | |
67 | static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC", | |
68 | "Line", "Stereo Mix", "Mono Mix", "Phone"}; | |
69 | ||
70 | static const struct soc_enum wm9705_enum_mic = | |
71 | SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic); | |
72 | static const struct soc_enum wm9705_enum_rec_l = | |
73 | SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel); | |
74 | static const struct soc_enum wm9705_enum_rec_r = | |
75 | SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel); | |
76 | ||
77 | /* Headphone Mixer */ | |
78 | static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = { | |
79 | SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1), | |
80 | SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1), | |
81 | SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1), | |
82 | SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1), | |
83 | SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1), | |
84 | }; | |
85 | ||
86 | /* Mic source */ | |
87 | static const struct snd_kcontrol_new wm9705_mic_src_controls = | |
88 | SOC_DAPM_ENUM("Route", wm9705_enum_mic); | |
89 | ||
90 | /* Capture source */ | |
91 | static const struct snd_kcontrol_new wm9705_capture_selectl_controls = | |
92 | SOC_DAPM_ENUM("Route", wm9705_enum_rec_l); | |
93 | static const struct snd_kcontrol_new wm9705_capture_selectr_controls = | |
94 | SOC_DAPM_ENUM("Route", wm9705_enum_rec_r); | |
95 | ||
96 | /* DAPM widgets */ | |
97 | static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = { | |
98 | SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0, | |
99 | &wm9705_mic_src_controls), | |
100 | SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0, | |
101 | &wm9705_capture_selectl_controls), | |
102 | SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0, | |
103 | &wm9705_capture_selectr_controls), | |
104 | SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", | |
105 | SND_SOC_NOPM, 0, 0), | |
106 | SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", | |
107 | SND_SOC_NOPM, 0, 0), | |
108 | SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0, | |
109 | &wm9705_hp_mixer_controls[0], | |
110 | ARRAY_SIZE(wm9705_hp_mixer_controls)), | |
111 | SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), | |
112 | SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0), | |
113 | SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0), | |
114 | SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
115 | SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
116 | SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
117 | SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
118 | SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
119 | SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
120 | SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
121 | SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
122 | SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
123 | SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0), | |
124 | SND_SOC_DAPM_OUTPUT("HPOUTL"), | |
125 | SND_SOC_DAPM_OUTPUT("HPOUTR"), | |
126 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
127 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
128 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
129 | SND_SOC_DAPM_INPUT("PHONE"), | |
130 | SND_SOC_DAPM_INPUT("LINEINL"), | |
131 | SND_SOC_DAPM_INPUT("LINEINR"), | |
132 | SND_SOC_DAPM_INPUT("CDINL"), | |
133 | SND_SOC_DAPM_INPUT("CDINR"), | |
134 | SND_SOC_DAPM_INPUT("PCBEEP"), | |
135 | SND_SOC_DAPM_INPUT("MIC1"), | |
136 | SND_SOC_DAPM_INPUT("MIC2"), | |
137 | }; | |
138 | ||
139 | /* Audio map | |
140 | * WM9705 has no switches to disable the route from the inputs to the HP mixer | |
141 | * so in order to prevent active inputs from forcing the audio outputs to be | |
142 | * constantly enabled, we use the mutes on those inputs to simulate such | |
143 | * controls. | |
144 | */ | |
145 | static const struct snd_soc_dapm_route audio_map[] = { | |
146 | /* HP mixer */ | |
147 | {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"}, | |
148 | {"HP Mixer", "CD Playback Switch", "CD PGA"}, | |
149 | {"HP Mixer", "Mic Playback Switch", "Mic PGA"}, | |
150 | {"HP Mixer", "Phone Playback Switch", "Phone PGA"}, | |
151 | {"HP Mixer", "Line Playback Switch", "Line PGA"}, | |
152 | {"HP Mixer", NULL, "Left DAC"}, | |
153 | {"HP Mixer", NULL, "Right DAC"}, | |
154 | ||
155 | /* mono mixer */ | |
156 | {"Mono Mixer", NULL, "HP Mixer"}, | |
157 | ||
158 | /* outputs */ | |
159 | {"Headphone PGA", NULL, "HP Mixer"}, | |
160 | {"HPOUTL", NULL, "Headphone PGA"}, | |
161 | {"HPOUTR", NULL, "Headphone PGA"}, | |
162 | {"Line out PGA", NULL, "HP Mixer"}, | |
163 | {"LOUT", NULL, "Line out PGA"}, | |
164 | {"ROUT", NULL, "Line out PGA"}, | |
165 | {"Mono PGA", NULL, "Mono Mixer"}, | |
166 | {"MONOOUT", NULL, "Mono PGA"}, | |
167 | ||
168 | /* inputs */ | |
169 | {"CD PGA", NULL, "CDINL"}, | |
170 | {"CD PGA", NULL, "CDINR"}, | |
171 | {"Line PGA", NULL, "LINEINL"}, | |
172 | {"Line PGA", NULL, "LINEINR"}, | |
173 | {"Phone PGA", NULL, "PHONE"}, | |
174 | {"Mic Source", "Mic 1", "MIC1"}, | |
175 | {"Mic Source", "Mic 2", "MIC2"}, | |
176 | {"Mic PGA", NULL, "Mic Source"}, | |
177 | {"PCBEEP PGA", NULL, "PCBEEP"}, | |
178 | ||
179 | /* Left capture selector */ | |
180 | {"Left Capture Source", "Mic", "Mic Source"}, | |
181 | {"Left Capture Source", "CD", "CDINL"}, | |
182 | {"Left Capture Source", "Line", "LINEINL"}, | |
183 | {"Left Capture Source", "Stereo Mix", "HP Mixer"}, | |
184 | {"Left Capture Source", "Mono Mix", "HP Mixer"}, | |
185 | {"Left Capture Source", "Phone", "PHONE"}, | |
186 | ||
187 | /* Right capture source */ | |
188 | {"Right Capture Source", "Mic", "Mic Source"}, | |
189 | {"Right Capture Source", "CD", "CDINR"}, | |
190 | {"Right Capture Source", "Line", "LINEINR"}, | |
191 | {"Right Capture Source", "Stereo Mix", "HP Mixer"}, | |
192 | {"Right Capture Source", "Mono Mix", "HP Mixer"}, | |
193 | {"Right Capture Source", "Phone", "PHONE"}, | |
194 | ||
195 | {"ADC PGA", NULL, "Left Capture Source"}, | |
196 | {"ADC PGA", NULL, "Right Capture Source"}, | |
197 | ||
198 | /* ADC's */ | |
199 | {"Left ADC", NULL, "ADC PGA"}, | |
200 | {"Right ADC", NULL, "ADC PGA"}, | |
201 | }; | |
202 | ||
203 | static int wm9705_add_widgets(struct snd_soc_codec *codec) | |
204 | { | |
205 | snd_soc_dapm_new_controls(codec, wm9705_dapm_widgets, | |
206 | ARRAY_SIZE(wm9705_dapm_widgets)); | |
207 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
208 | snd_soc_dapm_new_widgets(codec); | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | /* We use a register cache to enhance read performance. */ | |
214 | static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg) | |
215 | { | |
216 | u16 *cache = codec->reg_cache; | |
217 | ||
218 | switch (reg) { | |
219 | case AC97_RESET: | |
220 | case AC97_VENDOR_ID1: | |
221 | case AC97_VENDOR_ID2: | |
222 | return soc_ac97_ops.read(codec->ac97, reg); | |
223 | default: | |
224 | reg = reg >> 1; | |
225 | ||
226 | if (reg >= (ARRAY_SIZE(wm9705_reg))) | |
227 | return -EIO; | |
228 | ||
229 | return cache[reg]; | |
230 | } | |
231 | } | |
232 | ||
233 | static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, | |
234 | unsigned int val) | |
235 | { | |
236 | u16 *cache = codec->reg_cache; | |
237 | ||
238 | soc_ac97_ops.write(codec->ac97, reg, val); | |
239 | reg = reg >> 1; | |
240 | if (reg < (ARRAY_SIZE(wm9705_reg))) | |
241 | cache[reg] = val; | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | static int ac97_prepare(struct snd_pcm_substream *substream, | |
247 | struct snd_soc_dai *dai) | |
248 | { | |
249 | struct snd_pcm_runtime *runtime = substream->runtime; | |
250 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
251 | struct snd_soc_device *socdev = rtd->socdev; | |
6627a653 | 252 | struct snd_soc_codec *codec = socdev->card->codec; |
2aceefef IM |
253 | int reg; |
254 | u16 vra; | |
255 | ||
256 | vra = ac97_read(codec, AC97_EXTENDED_STATUS); | |
257 | ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1); | |
258 | ||
259 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
260 | reg = AC97_PCM_FRONT_DAC_RATE; | |
261 | else | |
262 | reg = AC97_PCM_LR_ADC_RATE; | |
263 | ||
264 | return ac97_write(codec, reg, runtime->rate); | |
265 | } | |
266 | ||
267 | #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \ | |
268 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ | |
269 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ | |
270 | SNDRV_PCM_RATE_48000) | |
271 | ||
6335d055 EM |
272 | static struct snd_soc_dai_ops wm9705_dai_ops = { |
273 | .prepare = ac97_prepare, | |
274 | }; | |
275 | ||
2aceefef IM |
276 | struct snd_soc_dai wm9705_dai[] = { |
277 | { | |
278 | .name = "AC97 HiFi", | |
279 | .ac97_control = 1, | |
280 | .playback = { | |
281 | .stream_name = "HiFi Playback", | |
282 | .channels_min = 1, | |
283 | .channels_max = 2, | |
284 | .rates = WM9705_AC97_RATES, | |
33f503c9 | 285 | .formats = SND_SOC_STD_AC97_FMTS, |
2aceefef IM |
286 | }, |
287 | .capture = { | |
288 | .stream_name = "HiFi Capture", | |
289 | .channels_min = 1, | |
290 | .channels_max = 2, | |
291 | .rates = WM9705_AC97_RATES, | |
33f503c9 | 292 | .formats = SND_SOC_STD_AC97_FMTS, |
2aceefef | 293 | }, |
6335d055 | 294 | .ops = &wm9705_dai_ops, |
2aceefef IM |
295 | }, |
296 | { | |
297 | .name = "AC97 Aux", | |
298 | .playback = { | |
299 | .stream_name = "Aux Playback", | |
300 | .channels_min = 1, | |
301 | .channels_max = 1, | |
302 | .rates = WM9705_AC97_RATES, | |
303 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
304 | }, | |
305 | } | |
306 | }; | |
307 | EXPORT_SYMBOL_GPL(wm9705_dai); | |
308 | ||
309 | static int wm9705_reset(struct snd_soc_codec *codec) | |
310 | { | |
311 | if (soc_ac97_ops.reset) { | |
312 | soc_ac97_ops.reset(codec->ac97); | |
313 | if (ac97_read(codec, 0) == wm9705_reg[0]) | |
314 | return 0; /* Success */ | |
315 | } | |
316 | ||
317 | return -EIO; | |
318 | } | |
319 | ||
0a11b168 | 320 | #ifdef CONFIG_PM |
516ef69f | 321 | static int wm9705_soc_suspend(struct platform_device *pdev, pm_message_t msg) |
0a11b168 MB |
322 | { |
323 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
324 | struct snd_soc_codec *codec = socdev->card->codec; | |
325 | ||
326 | soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff); | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | static int wm9705_soc_resume(struct platform_device *pdev) | |
332 | { | |
333 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
334 | struct snd_soc_codec *codec = socdev->card->codec; | |
335 | int i, ret; | |
336 | u16 *cache = codec->reg_cache; | |
337 | ||
338 | ret = wm9705_reset(codec); | |
339 | if (ret < 0) { | |
340 | printk(KERN_ERR "could not reset AC97 codec\n"); | |
341 | return ret; | |
342 | } | |
343 | ||
344 | for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) { | |
345 | soc_ac97_ops.write(codec->ac97, i, cache[i>>1]); | |
346 | } | |
347 | ||
348 | return 0; | |
349 | } | |
350 | #else | |
351 | #define wm9705_soc_suspend NULL | |
352 | #define wm9705_soc_resume NULL | |
353 | #endif | |
354 | ||
2aceefef IM |
355 | static int wm9705_soc_probe(struct platform_device *pdev) |
356 | { | |
357 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
358 | struct snd_soc_codec *codec; | |
359 | int ret = 0; | |
360 | ||
361 | printk(KERN_INFO "WM9705 SoC Audio Codec\n"); | |
362 | ||
6627a653 MB |
363 | socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), |
364 | GFP_KERNEL); | |
365 | if (socdev->card->codec == NULL) | |
2aceefef | 366 | return -ENOMEM; |
6627a653 | 367 | codec = socdev->card->codec; |
2aceefef IM |
368 | mutex_init(&codec->mutex); |
369 | ||
370 | codec->reg_cache = kmemdup(wm9705_reg, sizeof(wm9705_reg), GFP_KERNEL); | |
371 | if (codec->reg_cache == NULL) { | |
372 | ret = -ENOMEM; | |
373 | goto cache_err; | |
374 | } | |
375 | codec->reg_cache_size = sizeof(wm9705_reg); | |
376 | codec->reg_cache_step = 2; | |
377 | ||
378 | codec->name = "WM9705"; | |
379 | codec->owner = THIS_MODULE; | |
380 | codec->dai = wm9705_dai; | |
381 | codec->num_dai = ARRAY_SIZE(wm9705_dai); | |
382 | codec->write = ac97_write; | |
383 | codec->read = ac97_read; | |
384 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
385 | INIT_LIST_HEAD(&codec->dapm_paths); | |
386 | ||
387 | ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); | |
388 | if (ret < 0) { | |
389 | printk(KERN_ERR "wm9705: failed to register AC97 codec\n"); | |
390 | goto codec_err; | |
391 | } | |
392 | ||
393 | /* register pcms */ | |
394 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
395 | if (ret < 0) | |
396 | goto pcm_err; | |
397 | ||
398 | ret = wm9705_reset(codec); | |
399 | if (ret) | |
400 | goto reset_err; | |
401 | ||
402 | snd_soc_add_controls(codec, wm9705_snd_ac97_controls, | |
403 | ARRAY_SIZE(wm9705_snd_ac97_controls)); | |
404 | wm9705_add_widgets(codec); | |
405 | ||
406 | ret = snd_soc_init_card(socdev); | |
407 | if (ret < 0) { | |
408 | printk(KERN_ERR "wm9705: failed to register card\n"); | |
821ebc86 | 409 | goto reset_err; |
2aceefef IM |
410 | } |
411 | ||
412 | return 0; | |
413 | ||
414 | reset_err: | |
415 | snd_soc_free_pcms(socdev); | |
416 | pcm_err: | |
417 | snd_soc_free_ac97_codec(codec); | |
418 | codec_err: | |
419 | kfree(codec->reg_cache); | |
420 | cache_err: | |
6627a653 MB |
421 | kfree(socdev->card->codec); |
422 | socdev->card->codec = NULL; | |
2aceefef IM |
423 | return ret; |
424 | } | |
425 | ||
426 | static int wm9705_soc_remove(struct platform_device *pdev) | |
427 | { | |
428 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 429 | struct snd_soc_codec *codec = socdev->card->codec; |
2aceefef IM |
430 | |
431 | if (codec == NULL) | |
432 | return 0; | |
433 | ||
434 | snd_soc_dapm_free(socdev); | |
435 | snd_soc_free_pcms(socdev); | |
436 | snd_soc_free_ac97_codec(codec); | |
437 | kfree(codec->reg_cache); | |
438 | kfree(codec); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | struct snd_soc_codec_device soc_codec_dev_wm9705 = { | |
443 | .probe = wm9705_soc_probe, | |
444 | .remove = wm9705_soc_remove, | |
0a11b168 MB |
445 | .suspend = wm9705_soc_suspend, |
446 | .resume = wm9705_soc_resume, | |
2aceefef IM |
447 | }; |
448 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm9705); | |
449 | ||
450 | MODULE_DESCRIPTION("ASoC WM9705 driver"); | |
451 | MODULE_AUTHOR("Ian Molton"); | |
452 | MODULE_LICENSE("GPL v2"); |