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wm9705.c
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1 /*
2  * wm9705.c -- ALSA Soc WM9705 codec support
3  *
4  * Copyright 2008 Ian Molton <[email protected]>
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 /*
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),
62  SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
63  SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
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 wm9705_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 /* We use a register cache to enhance read performance. */
204 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
205 {
206  u16 *cache = codec->reg_cache;
207 
208  switch (reg) {
209  case AC97_RESET:
210  case AC97_VENDOR_ID1:
211  case AC97_VENDOR_ID2:
212  return soc_ac97_ops.read(codec->ac97, reg);
213  default:
214  reg = reg >> 1;
215 
216  if (reg >= (ARRAY_SIZE(wm9705_reg)))
217  return -EIO;
218 
219  return cache[reg];
220  }
221 }
222 
223 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
224  unsigned int val)
225 {
226  u16 *cache = codec->reg_cache;
227 
228  soc_ac97_ops.write(codec->ac97, reg, val);
229  reg = reg >> 1;
230  if (reg < (ARRAY_SIZE(wm9705_reg)))
231  cache[reg] = val;
232 
233  return 0;
234 }
235 
236 static int ac97_prepare(struct snd_pcm_substream *substream,
237  struct snd_soc_dai *dai)
238 {
239  struct snd_soc_codec *codec = dai->codec;
240  int reg;
241  u16 vra;
242 
243  vra = ac97_read(codec, AC97_EXTENDED_STATUS);
244  ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
245 
246  if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
247  reg = AC97_PCM_FRONT_DAC_RATE;
248  else
249  reg = AC97_PCM_LR_ADC_RATE;
250 
251  return ac97_write(codec, reg, substream->runtime->rate);
252 }
253 
254 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
255  SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
256  SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
257  SNDRV_PCM_RATE_48000)
258 
259 static const struct snd_soc_dai_ops wm9705_dai_ops = {
260  .prepare = ac97_prepare,
261 };
262 
263 static struct snd_soc_dai_driver wm9705_dai[] = {
264  {
265  .name = "wm9705-hifi",
266  .ac97_control = 1,
267  .playback = {
268  .stream_name = "HiFi Playback",
269  .channels_min = 1,
270  .channels_max = 2,
271  .rates = WM9705_AC97_RATES,
272  .formats = SND_SOC_STD_AC97_FMTS,
273  },
274  .capture = {
275  .stream_name = "HiFi Capture",
276  .channels_min = 1,
277  .channels_max = 2,
278  .rates = WM9705_AC97_RATES,
279  .formats = SND_SOC_STD_AC97_FMTS,
280  },
281  .ops = &wm9705_dai_ops,
282  },
283  {
284  .name = "wm9705-aux",
285  .playback = {
286  .stream_name = "Aux Playback",
287  .channels_min = 1,
288  .channels_max = 1,
289  .rates = WM9705_AC97_RATES,
290  .formats = SNDRV_PCM_FMTBIT_S16_LE,
291  },
292  }
293 };
294 
295 static int wm9705_reset(struct snd_soc_codec *codec)
296 {
297  if (soc_ac97_ops.reset) {
298  soc_ac97_ops.reset(codec->ac97);
299  if (ac97_read(codec, 0) == wm9705_reg[0])
300  return 0; /* Success */
301  }
302 
303  return -EIO;
304 }
305 
306 #ifdef CONFIG_PM
307 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
308 {
309  soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
310 
311  return 0;
312 }
313 
314 static int wm9705_soc_resume(struct snd_soc_codec *codec)
315 {
316  int i, ret;
317  u16 *cache = codec->reg_cache;
318 
319  ret = wm9705_reset(codec);
320  if (ret < 0) {
321  printk(KERN_ERR "could not reset AC97 codec\n");
322  return ret;
323  }
324 
325  for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
326  soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
327  }
328 
329  return 0;
330 }
331 #else
332 #define wm9705_soc_suspend NULL
333 #define wm9705_soc_resume NULL
334 #endif
335 
336 static int wm9705_soc_probe(struct snd_soc_codec *codec)
337 {
338  int ret = 0;
339 
340  printk(KERN_INFO "WM9705 SoC Audio Codec\n");
341 
342  ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
343  if (ret < 0) {
344  printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
345  return ret;
346  }
347 
348  ret = wm9705_reset(codec);
349  if (ret)
350  goto reset_err;
351 
352  snd_soc_add_codec_controls(codec, wm9705_snd_ac97_controls,
353  ARRAY_SIZE(wm9705_snd_ac97_controls));
354 
355  return 0;
356 
357 reset_err:
358  snd_soc_free_ac97_codec(codec);
359  return ret;
360 }
361 
362 static int wm9705_soc_remove(struct snd_soc_codec *codec)
363 {
364  snd_soc_free_ac97_codec(codec);
365  return 0;
366 }
367 
368 static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
369  .probe = wm9705_soc_probe,
370  .remove = wm9705_soc_remove,
371  .suspend = wm9705_soc_suspend,
372  .resume = wm9705_soc_resume,
373  .read = ac97_read,
374  .write = ac97_write,
375  .reg_cache_size = ARRAY_SIZE(wm9705_reg),
376  .reg_word_size = sizeof(u16),
377  .reg_cache_step = 2,
378  .reg_cache_default = wm9705_reg,
379  .dapm_widgets = wm9705_dapm_widgets,
380  .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
381  .dapm_routes = wm9705_audio_map,
382  .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
383 };
384 
385 static __devinit int wm9705_probe(struct platform_device *pdev)
386 {
387  return snd_soc_register_codec(&pdev->dev,
388  &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
389 }
390 
391 static int __devexit wm9705_remove(struct platform_device *pdev)
392 {
393  snd_soc_unregister_codec(&pdev->dev);
394  return 0;
395 }
396 
397 static struct platform_driver wm9705_codec_driver = {
398  .driver = {
399  .name = "wm9705-codec",
400  .owner = THIS_MODULE,
401  },
402 
403  .probe = wm9705_probe,
404  .remove = __devexit_p(wm9705_remove),
405 };
406 
407 module_platform_driver(wm9705_codec_driver);
408 
409 MODULE_DESCRIPTION("ASoC WM9705 driver");
410 MODULE_AUTHOR("Ian Molton");
411 MODULE_LICENSE("GPL v2");
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