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Linux/sound/soc/codecs/wm9705.c

  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/slab.h>
 14 #include <linux/module.h>
 15 #include <linux/kernel.h>
 16 #include <linux/device.h>
 17 #include <linux/regmap.h>
 18 #include <sound/core.h>
 19 #include <sound/pcm.h>
 20 #include <sound/ac97_codec.h>
 21 #include <sound/initval.h>
 22 #include <sound/soc.h>
 23 
 24 #define WM9705_VENDOR_ID 0x574d4c05
 25 #define WM9705_VENDOR_ID_MASK 0xffffffff
 26 
 27 static const struct reg_default wm9705_reg_defaults[] = {
 28         { 0x02, 0x8000 },
 29         { 0x04, 0x8000 },
 30         { 0x06, 0x8000 },
 31         { 0x0a, 0x8000 },
 32         { 0x0c, 0x8008 },
 33         { 0x0e, 0x8008 },
 34         { 0x10, 0x8808 },
 35         { 0x12, 0x8808 },
 36         { 0x14, 0x8808 },
 37         { 0x16, 0x8808 },
 38         { 0x18, 0x8808 },
 39         { 0x1a, 0x0000 },
 40         { 0x1c, 0x8000 },
 41         { 0x20, 0x0000 },
 42         { 0x22, 0x0000 },
 43         { 0x26, 0x000f },
 44         { 0x28, 0x0605 },
 45         { 0x2a, 0x0000 },
 46         { 0x2c, 0xbb80 },
 47         { 0x32, 0xbb80 },
 48         { 0x34, 0x2000 },
 49         { 0x5a, 0x0000 },
 50         { 0x5c, 0x0000 },
 51         { 0x72, 0x0808 },
 52         { 0x74, 0x0000 },
 53         { 0x76, 0x0006 },
 54         { 0x78, 0x0000 },
 55         { 0x7a, 0x0000 },
 56 };
 57 
 58 static const struct regmap_config wm9705_regmap_config = {
 59         .reg_bits = 16,
 60         .reg_stride = 2,
 61         .val_bits = 16,
 62         .max_register = 0x7e,
 63         .cache_type = REGCACHE_RBTREE,
 64 
 65         .volatile_reg = regmap_ac97_default_volatile,
 66 
 67         .reg_defaults = wm9705_reg_defaults,
 68         .num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
 69 };
 70 
 71 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
 72         SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
 73         SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
 74         SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
 75         SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
 76         SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
 77         SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
 78         SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
 79         SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
 80         SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
 81         SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
 82         SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
 83         SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
 84         SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
 85         SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
 86         SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
 87         SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
 88 };
 89 
 90 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
 91 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
 92         "Line", "Stereo Mix", "Mono Mix", "Phone"};
 93 
 94 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
 95                             AC97_GENERAL_PURPOSE, 8, wm9705_mic);
 96 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
 97                             AC97_REC_SEL, 8, wm9705_rec_sel);
 98 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
 99                             AC97_REC_SEL, 0, wm9705_rec_sel);
100 
101 /* Headphone Mixer */
102 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
103         SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
104         SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
105         SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
106         SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
107         SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
108 };
109 
110 /* Mic source */
111 static const struct snd_kcontrol_new wm9705_mic_src_controls =
112         SOC_DAPM_ENUM("Route", wm9705_enum_mic);
113 
114 /* Capture source */
115 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
116         SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
117 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
118         SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
119 
120 /* DAPM widgets */
121 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
122         SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
123                 &wm9705_mic_src_controls),
124         SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
125                 &wm9705_capture_selectl_controls),
126         SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
127                 &wm9705_capture_selectr_controls),
128         SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
129                 SND_SOC_NOPM, 0, 0),
130         SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
131                 SND_SOC_NOPM, 0, 0),
132         SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
133                 &wm9705_hp_mixer_controls[0],
134                 ARRAY_SIZE(wm9705_hp_mixer_controls)),
135         SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
136         SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
137         SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
138         SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
139         SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
140         SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
141         SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
142         SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
143         SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
144         SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
145         SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
146         SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
147         SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
148         SND_SOC_DAPM_OUTPUT("HPOUTL"),
149         SND_SOC_DAPM_OUTPUT("HPOUTR"),
150         SND_SOC_DAPM_OUTPUT("LOUT"),
151         SND_SOC_DAPM_OUTPUT("ROUT"),
152         SND_SOC_DAPM_OUTPUT("MONOOUT"),
153         SND_SOC_DAPM_INPUT("PHONE"),
154         SND_SOC_DAPM_INPUT("LINEINL"),
155         SND_SOC_DAPM_INPUT("LINEINR"),
156         SND_SOC_DAPM_INPUT("CDINL"),
157         SND_SOC_DAPM_INPUT("CDINR"),
158         SND_SOC_DAPM_INPUT("PCBEEP"),
159         SND_SOC_DAPM_INPUT("MIC1"),
160         SND_SOC_DAPM_INPUT("MIC2"),
161 };
162 
163 /* Audio map
164  * WM9705 has no switches to disable the route from the inputs to the HP mixer
165  * so in order to prevent active inputs from forcing the audio outputs to be
166  * constantly enabled, we use the mutes on those inputs to simulate such
167  * controls.
168  */
169 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
170         /* HP mixer */
171         {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
172         {"HP Mixer", "CD Playback Switch", "CD PGA"},
173         {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
174         {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
175         {"HP Mixer", "Line Playback Switch", "Line PGA"},
176         {"HP Mixer", NULL, "Left DAC"},
177         {"HP Mixer", NULL, "Right DAC"},
178 
179         /* mono mixer */
180         {"Mono Mixer", NULL, "HP Mixer"},
181 
182         /* outputs */
183         {"Headphone PGA", NULL, "HP Mixer"},
184         {"HPOUTL", NULL, "Headphone PGA"},
185         {"HPOUTR", NULL, "Headphone PGA"},
186         {"Line out PGA", NULL, "HP Mixer"},
187         {"LOUT", NULL, "Line out PGA"},
188         {"ROUT", NULL, "Line out PGA"},
189         {"Mono PGA", NULL, "Mono Mixer"},
190         {"MONOOUT", NULL, "Mono PGA"},
191 
192         /* inputs */
193         {"CD PGA", NULL, "CDINL"},
194         {"CD PGA", NULL, "CDINR"},
195         {"Line PGA", NULL, "LINEINL"},
196         {"Line PGA", NULL, "LINEINR"},
197         {"Phone PGA", NULL, "PHONE"},
198         {"Mic Source", "Mic 1", "MIC1"},
199         {"Mic Source", "Mic 2", "MIC2"},
200         {"Mic PGA", NULL, "Mic Source"},
201         {"PCBEEP PGA", NULL, "PCBEEP"},
202 
203         /* Left capture selector */
204         {"Left Capture Source", "Mic", "Mic Source"},
205         {"Left Capture Source", "CD", "CDINL"},
206         {"Left Capture Source", "Line", "LINEINL"},
207         {"Left Capture Source", "Stereo Mix", "HP Mixer"},
208         {"Left Capture Source", "Mono Mix", "HP Mixer"},
209         {"Left Capture Source", "Phone", "PHONE"},
210 
211         /* Right capture source */
212         {"Right Capture Source", "Mic", "Mic Source"},
213         {"Right Capture Source", "CD", "CDINR"},
214         {"Right Capture Source", "Line", "LINEINR"},
215         {"Right Capture Source", "Stereo Mix", "HP Mixer"},
216         {"Right Capture Source", "Mono Mix", "HP Mixer"},
217         {"Right Capture Source", "Phone", "PHONE"},
218 
219         {"ADC PGA", NULL, "Left Capture Source"},
220         {"ADC PGA", NULL, "Right Capture Source"},
221 
222         /* ADC's */
223         {"Left ADC",  NULL, "ADC PGA"},
224         {"Right ADC", NULL, "ADC PGA"},
225 };
226 
227 static int ac97_prepare(struct snd_pcm_substream *substream,
228                         struct snd_soc_dai *dai)
229 {
230         struct snd_soc_codec *codec = dai->codec;
231         int reg;
232 
233         snd_soc_update_bits(codec, AC97_EXTENDED_STATUS, 0x1, 0x1);
234 
235         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
236                 reg = AC97_PCM_FRONT_DAC_RATE;
237         else
238                 reg = AC97_PCM_LR_ADC_RATE;
239 
240         return snd_soc_write(codec, reg, substream->runtime->rate);
241 }
242 
243 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
244                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
245                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
246                         SNDRV_PCM_RATE_48000)
247 
248 static const struct snd_soc_dai_ops wm9705_dai_ops = {
249         .prepare        = ac97_prepare,
250 };
251 
252 static struct snd_soc_dai_driver wm9705_dai[] = {
253         {
254                 .name = "wm9705-hifi",
255                 .playback = {
256                         .stream_name = "HiFi Playback",
257                         .channels_min = 1,
258                         .channels_max = 2,
259                         .rates = WM9705_AC97_RATES,
260                         .formats = SND_SOC_STD_AC97_FMTS,
261                 },
262                 .capture = {
263                         .stream_name = "HiFi Capture",
264                         .channels_min = 1,
265                         .channels_max = 2,
266                         .rates = WM9705_AC97_RATES,
267                         .formats = SND_SOC_STD_AC97_FMTS,
268                 },
269                 .ops = &wm9705_dai_ops,
270         },
271         {
272                 .name = "wm9705-aux",
273                 .playback = {
274                         .stream_name = "Aux Playback",
275                         .channels_min = 1,
276                         .channels_max = 1,
277                         .rates = WM9705_AC97_RATES,
278                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
279                 },
280         }
281 };
282 
283 #ifdef CONFIG_PM
284 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
285 {
286         regcache_cache_bypass(codec->component.regmap, true);
287         snd_soc_write(codec, AC97_POWERDOWN, 0xffff);
288         regcache_cache_bypass(codec->component.regmap, false);
289 
290         return 0;
291 }
292 
293 static int wm9705_soc_resume(struct snd_soc_codec *codec)
294 {
295         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
296         int ret;
297 
298         ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
299                 WM9705_VENDOR_ID_MASK);
300         if (ret < 0)
301                 return ret;
302 
303         regcache_sync(codec->component.regmap);
304 
305         return 0;
306 }
307 #else
308 #define wm9705_soc_suspend NULL
309 #define wm9705_soc_resume NULL
310 #endif
311 
312 static int wm9705_soc_probe(struct snd_soc_codec *codec)
313 {
314         struct snd_ac97 *ac97;
315         struct regmap *regmap;
316         int ret;
317 
318         ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
319                 WM9705_VENDOR_ID_MASK);
320         if (IS_ERR(ac97)) {
321                 dev_err(codec->dev, "Failed to register AC97 codec\n");
322                 return PTR_ERR(ac97);
323         }
324 
325         regmap = regmap_init_ac97(ac97, &wm9705_regmap_config);
326         if (IS_ERR(regmap)) {
327                 ret = PTR_ERR(regmap);
328                 goto err_free_ac97_codec;
329         }
330 
331         snd_soc_codec_set_drvdata(codec, ac97);
332         snd_soc_codec_init_regmap(codec, regmap);
333 
334         return 0;
335 err_free_ac97_codec:
336         snd_soc_free_ac97_codec(ac97);
337         return ret;
338 }
339 
340 static int wm9705_soc_remove(struct snd_soc_codec *codec)
341 {
342         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
343 
344         snd_soc_codec_exit_regmap(codec);
345         snd_soc_free_ac97_codec(ac97);
346         return 0;
347 }
348 
349 static const struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
350         .probe =        wm9705_soc_probe,
351         .remove =       wm9705_soc_remove,
352         .suspend =      wm9705_soc_suspend,
353         .resume =       wm9705_soc_resume,
354 
355         .component_driver = {
356                 .controls               = wm9705_snd_ac97_controls,
357                 .num_controls           = ARRAY_SIZE(wm9705_snd_ac97_controls),
358                 .dapm_widgets           = wm9705_dapm_widgets,
359                 .num_dapm_widgets       = ARRAY_SIZE(wm9705_dapm_widgets),
360                 .dapm_routes            = wm9705_audio_map,
361                 .num_dapm_routes        = ARRAY_SIZE(wm9705_audio_map),
362         },
363 };
364 
365 static int wm9705_probe(struct platform_device *pdev)
366 {
367         return snd_soc_register_codec(&pdev->dev,
368                         &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
369 }
370 
371 static int wm9705_remove(struct platform_device *pdev)
372 {
373         snd_soc_unregister_codec(&pdev->dev);
374         return 0;
375 }
376 
377 static struct platform_driver wm9705_codec_driver = {
378         .driver = {
379                         .name = "wm9705-codec",
380         },
381 
382         .probe = wm9705_probe,
383         .remove = wm9705_remove,
384 };
385 
386 module_platform_driver(wm9705_codec_driver);
387 
388 MODULE_DESCRIPTION("ASoC WM9705 driver");
389 MODULE_AUTHOR("Ian Molton");
390 MODULE_LICENSE("GPL v2");
391 

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