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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> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
2aceefef IM |
14 | #include <linux/module.h> |
15 | #include <linux/kernel.h> | |
16 | #include <linux/device.h> | |
17 | #include <sound/core.h> | |
18 | #include <sound/pcm.h> | |
19 | #include <sound/ac97_codec.h> | |
20 | #include <sound/initval.h> | |
21 | #include <sound/soc.h> | |
2aceefef | 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 | ||
09981dcb TI |
70 | static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic, |
71 | AC97_GENERAL_PURPOSE, 8, wm9705_mic); | |
72 | static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l, | |
73 | AC97_REC_SEL, 8, wm9705_rec_sel); | |
74 | static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r, | |
75 | AC97_REC_SEL, 0, wm9705_rec_sel); | |
2aceefef IM |
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 | */ | |
97a58d6e | 145 | static const struct snd_soc_dapm_route wm9705_audio_map[] = { |
2aceefef IM |
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 | ||
2aceefef IM |
203 | /* We use a register cache to enhance read performance. */ |
204 | static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg) | |
205 | { | |
358a8bb5 | 206 | struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); |
2aceefef IM |
207 | u16 *cache = codec->reg_cache; |
208 | ||
209 | switch (reg) { | |
210 | case AC97_RESET: | |
211 | case AC97_VENDOR_ID1: | |
212 | case AC97_VENDOR_ID2: | |
358a8bb5 | 213 | return soc_ac97_ops->read(ac97, reg); |
2aceefef IM |
214 | default: |
215 | reg = reg >> 1; | |
216 | ||
217 | if (reg >= (ARRAY_SIZE(wm9705_reg))) | |
218 | return -EIO; | |
219 | ||
220 | return cache[reg]; | |
221 | } | |
222 | } | |
223 | ||
224 | static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, | |
225 | unsigned int val) | |
226 | { | |
358a8bb5 | 227 | struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); |
2aceefef IM |
228 | u16 *cache = codec->reg_cache; |
229 | ||
358a8bb5 | 230 | soc_ac97_ops->write(ac97, reg, val); |
2aceefef IM |
231 | reg = reg >> 1; |
232 | if (reg < (ARRAY_SIZE(wm9705_reg))) | |
233 | cache[reg] = val; | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | static int ac97_prepare(struct snd_pcm_substream *substream, | |
239 | struct snd_soc_dai *dai) | |
240 | { | |
e6968a17 | 241 | struct snd_soc_codec *codec = dai->codec; |
2aceefef IM |
242 | int reg; |
243 | u16 vra; | |
244 | ||
245 | vra = ac97_read(codec, AC97_EXTENDED_STATUS); | |
246 | ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1); | |
247 | ||
248 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
249 | reg = AC97_PCM_FRONT_DAC_RATE; | |
250 | else | |
251 | reg = AC97_PCM_LR_ADC_RATE; | |
252 | ||
019ec505 | 253 | return ac97_write(codec, reg, substream->runtime->rate); |
2aceefef IM |
254 | } |
255 | ||
256 | #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \ | |
257 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ | |
258 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ | |
259 | SNDRV_PCM_RATE_48000) | |
260 | ||
85e7652d | 261 | static const struct snd_soc_dai_ops wm9705_dai_ops = { |
6335d055 EM |
262 | .prepare = ac97_prepare, |
263 | }; | |
264 | ||
f0fba2ad | 265 | static struct snd_soc_dai_driver wm9705_dai[] = { |
2aceefef | 266 | { |
f0fba2ad | 267 | .name = "wm9705-hifi", |
2aceefef IM |
268 | .playback = { |
269 | .stream_name = "HiFi Playback", | |
270 | .channels_min = 1, | |
271 | .channels_max = 2, | |
272 | .rates = WM9705_AC97_RATES, | |
33f503c9 | 273 | .formats = SND_SOC_STD_AC97_FMTS, |
2aceefef IM |
274 | }, |
275 | .capture = { | |
276 | .stream_name = "HiFi Capture", | |
277 | .channels_min = 1, | |
278 | .channels_max = 2, | |
279 | .rates = WM9705_AC97_RATES, | |
33f503c9 | 280 | .formats = SND_SOC_STD_AC97_FMTS, |
2aceefef | 281 | }, |
6335d055 | 282 | .ops = &wm9705_dai_ops, |
2aceefef IM |
283 | }, |
284 | { | |
f0fba2ad | 285 | .name = "wm9705-aux", |
2aceefef IM |
286 | .playback = { |
287 | .stream_name = "Aux Playback", | |
288 | .channels_min = 1, | |
289 | .channels_max = 1, | |
290 | .rates = WM9705_AC97_RATES, | |
291 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
292 | }, | |
293 | } | |
294 | }; | |
2aceefef IM |
295 | |
296 | static int wm9705_reset(struct snd_soc_codec *codec) | |
297 | { | |
358a8bb5 LPC |
298 | struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); |
299 | ||
b047e1cc | 300 | if (soc_ac97_ops->reset) { |
358a8bb5 | 301 | soc_ac97_ops->reset(ac97); |
2aceefef IM |
302 | if (ac97_read(codec, 0) == wm9705_reg[0]) |
303 | return 0; /* Success */ | |
304 | } | |
305 | ||
9cf766f6 LPC |
306 | dev_err(codec->dev, "Failed to reset: AC97 link error\n"); |
307 | ||
2aceefef IM |
308 | return -EIO; |
309 | } | |
310 | ||
0a11b168 | 311 | #ifdef CONFIG_PM |
84b315ee | 312 | static int wm9705_soc_suspend(struct snd_soc_codec *codec) |
0a11b168 | 313 | { |
358a8bb5 LPC |
314 | struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); |
315 | ||
316 | soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff); | |
0a11b168 MB |
317 | |
318 | return 0; | |
319 | } | |
320 | ||
f0fba2ad | 321 | static int wm9705_soc_resume(struct snd_soc_codec *codec) |
0a11b168 | 322 | { |
358a8bb5 | 323 | struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); |
0a11b168 MB |
324 | int i, ret; |
325 | u16 *cache = codec->reg_cache; | |
326 | ||
327 | ret = wm9705_reset(codec); | |
9cf766f6 | 328 | if (ret < 0) |
0a11b168 | 329 | return ret; |
0a11b168 MB |
330 | |
331 | for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) { | |
358a8bb5 | 332 | soc_ac97_ops->write(ac97, i, cache[i>>1]); |
0a11b168 MB |
333 | } |
334 | ||
335 | return 0; | |
336 | } | |
337 | #else | |
338 | #define wm9705_soc_suspend NULL | |
339 | #define wm9705_soc_resume NULL | |
340 | #endif | |
341 | ||
f0fba2ad | 342 | static int wm9705_soc_probe(struct snd_soc_codec *codec) |
2aceefef | 343 | { |
358a8bb5 | 344 | struct snd_ac97 *ac97; |
2aceefef IM |
345 | int ret = 0; |
346 | ||
f8d71be5 | 347 | ac97 = snd_soc_alloc_ac97_codec(codec); |
358a8bb5 LPC |
348 | if (IS_ERR(ac97)) { |
349 | ret = PTR_ERR(ac97); | |
9cf766f6 | 350 | dev_err(codec->dev, "Failed to register AC97 codec\n"); |
f0fba2ad | 351 | return ret; |
2aceefef IM |
352 | } |
353 | ||
2aceefef IM |
354 | ret = wm9705_reset(codec); |
355 | if (ret) | |
f8d71be5 LPC |
356 | goto err_put_device; |
357 | ||
358 | ret = device_add(&ac97->dev); | |
359 | if (ret) | |
360 | goto err_put_device; | |
361 | ||
362 | snd_soc_codec_set_drvdata(codec, ac97); | |
2aceefef | 363 | |
2aceefef IM |
364 | return 0; |
365 | ||
f8d71be5 LPC |
366 | err_put_device: |
367 | put_device(&ac97->dev); | |
2aceefef IM |
368 | return ret; |
369 | } | |
370 | ||
f0fba2ad | 371 | static int wm9705_soc_remove(struct snd_soc_codec *codec) |
2aceefef | 372 | { |
358a8bb5 LPC |
373 | struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); |
374 | ||
375 | snd_soc_free_ac97_codec(ac97); | |
2aceefef IM |
376 | return 0; |
377 | } | |
378 | ||
f0fba2ad | 379 | static struct snd_soc_codec_driver soc_codec_dev_wm9705 = { |
2aceefef IM |
380 | .probe = wm9705_soc_probe, |
381 | .remove = wm9705_soc_remove, | |
0a11b168 MB |
382 | .suspend = wm9705_soc_suspend, |
383 | .resume = wm9705_soc_resume, | |
f0fba2ad LG |
384 | .read = ac97_read, |
385 | .write = ac97_write, | |
e5eec34c | 386 | .reg_cache_size = ARRAY_SIZE(wm9705_reg), |
f0fba2ad LG |
387 | .reg_word_size = sizeof(u16), |
388 | .reg_cache_step = 2, | |
389 | .reg_cache_default = wm9705_reg, | |
d7cabb08 LPC |
390 | |
391 | .controls = wm9705_snd_ac97_controls, | |
392 | .num_controls = ARRAY_SIZE(wm9705_snd_ac97_controls), | |
97a58d6e LG |
393 | .dapm_widgets = wm9705_dapm_widgets, |
394 | .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets), | |
395 | .dapm_routes = wm9705_audio_map, | |
396 | .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map), | |
f0fba2ad LG |
397 | }; |
398 | ||
7a79e94e | 399 | static int wm9705_probe(struct platform_device *pdev) |
f0fba2ad LG |
400 | { |
401 | return snd_soc_register_codec(&pdev->dev, | |
402 | &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai)); | |
403 | } | |
404 | ||
7a79e94e | 405 | static int wm9705_remove(struct platform_device *pdev) |
f0fba2ad LG |
406 | { |
407 | snd_soc_unregister_codec(&pdev->dev); | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static struct platform_driver wm9705_codec_driver = { | |
412 | .driver = { | |
413 | .name = "wm9705-codec", | |
f0fba2ad LG |
414 | }, |
415 | ||
416 | .probe = wm9705_probe, | |
7a79e94e | 417 | .remove = wm9705_remove, |
2aceefef | 418 | }; |
f0fba2ad | 419 | |
5bbcc3c0 | 420 | module_platform_driver(wm9705_codec_driver); |
2aceefef IM |
421 | |
422 | MODULE_DESCRIPTION("ASoC WM9705 driver"); | |
423 | MODULE_AUTHOR("Ian Molton"); | |
424 | MODULE_LICENSE("GPL v2"); |