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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 <sound/core.h>
 18 #include <sound/pcm.h>
 19 #include <sound/ac97_codec.h>
 20 #include <sound/initval.h>
 21 #include <sound/soc.h>
 22 
 23 #include "wm9705.h"
 24 
 25 #define WM9705_VENDOR_ID 0x574d4c05
 26 #define WM9705_VENDOR_ID_MASK 0xffffffff
 27 
 28 /*
 29  * WM9705 register cache
 30  */
 31 static const u16 wm9705_reg[] = {
 32         0x6150, 0x8000, 0x8000, 0x8000, /* 0x0  */
 33         0x0000, 0x8000, 0x8008, 0x8008, /* 0x8  */
 34         0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
 35         0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
 36         0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
 37         0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
 38         0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
 39         0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
 40         0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
 41         0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
 42         0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
 43         0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
 44         0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
 45         0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
 46         0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
 47         0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
 48 };
 49 
 50 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
 51         SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
 52         SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
 53         SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
 54         SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
 55         SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
 56         SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
 57         SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
 58         SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
 59         SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
 60         SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
 61         SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
 62         SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
 63         SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
 64         SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
 65         SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
 66         SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
 67 };
 68 
 69 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
 70 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
 71         "Line", "Stereo Mix", "Mono Mix", "Phone"};
 72 
 73 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
 74                             AC97_GENERAL_PURPOSE, 8, wm9705_mic);
 75 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
 76                             AC97_REC_SEL, 8, wm9705_rec_sel);
 77 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
 78                             AC97_REC_SEL, 0, wm9705_rec_sel);
 79 
 80 /* Headphone Mixer */
 81 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
 82         SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
 83         SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
 84         SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
 85         SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
 86         SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
 87 };
 88 
 89 /* Mic source */
 90 static const struct snd_kcontrol_new wm9705_mic_src_controls =
 91         SOC_DAPM_ENUM("Route", wm9705_enum_mic);
 92 
 93 /* Capture source */
 94 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
 95         SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
 96 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
 97         SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
 98 
 99 /* DAPM widgets */
100 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
101         SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
102                 &wm9705_mic_src_controls),
103         SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
104                 &wm9705_capture_selectl_controls),
105         SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
106                 &wm9705_capture_selectr_controls),
107         SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
108                 SND_SOC_NOPM, 0, 0),
109         SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
110                 SND_SOC_NOPM, 0, 0),
111         SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
112                 &wm9705_hp_mixer_controls[0],
113                 ARRAY_SIZE(wm9705_hp_mixer_controls)),
114         SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
115         SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
116         SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
117         SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
118         SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
119         SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
120         SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
121         SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
122         SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
123         SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
124         SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
125         SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
126         SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
127         SND_SOC_DAPM_OUTPUT("HPOUTL"),
128         SND_SOC_DAPM_OUTPUT("HPOUTR"),
129         SND_SOC_DAPM_OUTPUT("LOUT"),
130         SND_SOC_DAPM_OUTPUT("ROUT"),
131         SND_SOC_DAPM_OUTPUT("MONOOUT"),
132         SND_SOC_DAPM_INPUT("PHONE"),
133         SND_SOC_DAPM_INPUT("LINEINL"),
134         SND_SOC_DAPM_INPUT("LINEINR"),
135         SND_SOC_DAPM_INPUT("CDINL"),
136         SND_SOC_DAPM_INPUT("CDINR"),
137         SND_SOC_DAPM_INPUT("PCBEEP"),
138         SND_SOC_DAPM_INPUT("MIC1"),
139         SND_SOC_DAPM_INPUT("MIC2"),
140 };
141 
142 /* Audio map
143  * WM9705 has no switches to disable the route from the inputs to the HP mixer
144  * so in order to prevent active inputs from forcing the audio outputs to be
145  * constantly enabled, we use the mutes on those inputs to simulate such
146  * controls.
147  */
148 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
149         /* HP mixer */
150         {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
151         {"HP Mixer", "CD Playback Switch", "CD PGA"},
152         {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
153         {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
154         {"HP Mixer", "Line Playback Switch", "Line PGA"},
155         {"HP Mixer", NULL, "Left DAC"},
156         {"HP Mixer", NULL, "Right DAC"},
157 
158         /* mono mixer */
159         {"Mono Mixer", NULL, "HP Mixer"},
160 
161         /* outputs */
162         {"Headphone PGA", NULL, "HP Mixer"},
163         {"HPOUTL", NULL, "Headphone PGA"},
164         {"HPOUTR", NULL, "Headphone PGA"},
165         {"Line out PGA", NULL, "HP Mixer"},
166         {"LOUT", NULL, "Line out PGA"},
167         {"ROUT", NULL, "Line out PGA"},
168         {"Mono PGA", NULL, "Mono Mixer"},
169         {"MONOOUT", NULL, "Mono PGA"},
170 
171         /* inputs */
172         {"CD PGA", NULL, "CDINL"},
173         {"CD PGA", NULL, "CDINR"},
174         {"Line PGA", NULL, "LINEINL"},
175         {"Line PGA", NULL, "LINEINR"},
176         {"Phone PGA", NULL, "PHONE"},
177         {"Mic Source", "Mic 1", "MIC1"},
178         {"Mic Source", "Mic 2", "MIC2"},
179         {"Mic PGA", NULL, "Mic Source"},
180         {"PCBEEP PGA", NULL, "PCBEEP"},
181 
182         /* Left capture selector */
183         {"Left Capture Source", "Mic", "Mic Source"},
184         {"Left Capture Source", "CD", "CDINL"},
185         {"Left Capture Source", "Line", "LINEINL"},
186         {"Left Capture Source", "Stereo Mix", "HP Mixer"},
187         {"Left Capture Source", "Mono Mix", "HP Mixer"},
188         {"Left Capture Source", "Phone", "PHONE"},
189 
190         /* Right capture source */
191         {"Right Capture Source", "Mic", "Mic Source"},
192         {"Right Capture Source", "CD", "CDINR"},
193         {"Right Capture Source", "Line", "LINEINR"},
194         {"Right Capture Source", "Stereo Mix", "HP Mixer"},
195         {"Right Capture Source", "Mono Mix", "HP Mixer"},
196         {"Right Capture Source", "Phone", "PHONE"},
197 
198         {"ADC PGA", NULL, "Left Capture Source"},
199         {"ADC PGA", NULL, "Right Capture Source"},
200 
201         /* ADC's */
202         {"Left ADC",  NULL, "ADC PGA"},
203         {"Right ADC", NULL, "ADC PGA"},
204 };
205 
206 /* We use a register cache to enhance read performance. */
207 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
208 {
209         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
210         u16 *cache = codec->reg_cache;
211 
212         switch (reg) {
213         case AC97_RESET:
214         case AC97_VENDOR_ID1:
215         case AC97_VENDOR_ID2:
216                 return soc_ac97_ops->read(ac97, reg);
217         default:
218                 reg = reg >> 1;
219 
220                 if (reg >= (ARRAY_SIZE(wm9705_reg)))
221                         return -EIO;
222 
223                 return cache[reg];
224         }
225 }
226 
227 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
228         unsigned int val)
229 {
230         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
231         u16 *cache = codec->reg_cache;
232 
233         soc_ac97_ops->write(ac97, reg, val);
234         reg = reg >> 1;
235         if (reg < (ARRAY_SIZE(wm9705_reg)))
236                 cache[reg] = val;
237 
238         return 0;
239 }
240 
241 static int ac97_prepare(struct snd_pcm_substream *substream,
242                         struct snd_soc_dai *dai)
243 {
244         struct snd_soc_codec *codec = dai->codec;
245         int reg;
246         u16 vra;
247 
248         vra = ac97_read(codec, AC97_EXTENDED_STATUS);
249         ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
250 
251         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
252                 reg = AC97_PCM_FRONT_DAC_RATE;
253         else
254                 reg = AC97_PCM_LR_ADC_RATE;
255 
256         return ac97_write(codec, reg, substream->runtime->rate);
257 }
258 
259 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
260                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
261                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
262                         SNDRV_PCM_RATE_48000)
263 
264 static const struct snd_soc_dai_ops wm9705_dai_ops = {
265         .prepare        = ac97_prepare,
266 };
267 
268 static struct snd_soc_dai_driver wm9705_dai[] = {
269         {
270                 .name = "wm9705-hifi",
271                 .playback = {
272                         .stream_name = "HiFi Playback",
273                         .channels_min = 1,
274                         .channels_max = 2,
275                         .rates = WM9705_AC97_RATES,
276                         .formats = SND_SOC_STD_AC97_FMTS,
277                 },
278                 .capture = {
279                         .stream_name = "HiFi Capture",
280                         .channels_min = 1,
281                         .channels_max = 2,
282                         .rates = WM9705_AC97_RATES,
283                         .formats = SND_SOC_STD_AC97_FMTS,
284                 },
285                 .ops = &wm9705_dai_ops,
286         },
287         {
288                 .name = "wm9705-aux",
289                 .playback = {
290                         .stream_name = "Aux Playback",
291                         .channels_min = 1,
292                         .channels_max = 1,
293                         .rates = WM9705_AC97_RATES,
294                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
295                 },
296         }
297 };
298 
299 #ifdef CONFIG_PM
300 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
301 {
302         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
303 
304         soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff);
305 
306         return 0;
307 }
308 
309 static int wm9705_soc_resume(struct snd_soc_codec *codec)
310 {
311         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
312         int i, ret;
313         u16 *cache = codec->reg_cache;
314 
315         ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
316                 WM9705_VENDOR_ID_MASK);
317         if (ret < 0)
318                 return ret;
319 
320         for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
321                 soc_ac97_ops->write(ac97, i, cache[i>>1]);
322         }
323 
324         return 0;
325 }
326 #else
327 #define wm9705_soc_suspend NULL
328 #define wm9705_soc_resume NULL
329 #endif
330 
331 static int wm9705_soc_probe(struct snd_soc_codec *codec)
332 {
333         struct snd_ac97 *ac97;
334 
335         ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
336                 WM9705_VENDOR_ID_MASK);
337         if (IS_ERR(ac97)) {
338                 dev_err(codec->dev, "Failed to register AC97 codec\n");
339                 return PTR_ERR(ac97);
340         }
341 
342         snd_soc_codec_set_drvdata(codec, ac97);
343 
344         return 0;
345 }
346 
347 static int wm9705_soc_remove(struct snd_soc_codec *codec)
348 {
349         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
350 
351         snd_soc_free_ac97_codec(ac97);
352         return 0;
353 }
354 
355 static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
356         .probe =        wm9705_soc_probe,
357         .remove =       wm9705_soc_remove,
358         .suspend =      wm9705_soc_suspend,
359         .resume =       wm9705_soc_resume,
360         .read = ac97_read,
361         .write = ac97_write,
362         .reg_cache_size = ARRAY_SIZE(wm9705_reg),
363         .reg_word_size = sizeof(u16),
364         .reg_cache_step = 2,
365         .reg_cache_default = wm9705_reg,
366 
367         .controls = wm9705_snd_ac97_controls,
368         .num_controls = ARRAY_SIZE(wm9705_snd_ac97_controls),
369         .dapm_widgets = wm9705_dapm_widgets,
370         .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
371         .dapm_routes = wm9705_audio_map,
372         .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
373 };
374 
375 static int wm9705_probe(struct platform_device *pdev)
376 {
377         return snd_soc_register_codec(&pdev->dev,
378                         &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
379 }
380 
381 static int wm9705_remove(struct platform_device *pdev)
382 {
383         snd_soc_unregister_codec(&pdev->dev);
384         return 0;
385 }
386 
387 static struct platform_driver wm9705_codec_driver = {
388         .driver = {
389                         .name = "wm9705-codec",
390         },
391 
392         .probe = wm9705_probe,
393         .remove = wm9705_remove,
394 };
395 
396 module_platform_driver(wm9705_codec_driver);
397 
398 MODULE_DESCRIPTION("ASoC WM9705 driver");
399 MODULE_AUTHOR("Ian Molton");
400 MODULE_LICENSE("GPL v2");
401 

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