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authorIan Molton <ian@mnementh.co.uk>2009-01-16 06:04:18 -0500
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-01-16 11:40:25 -0500
commit2aceefefc891e85d336c1d95d9d89fd785f5d44c (patch)
tree56afe09e9d11f17b035284821a9fe1cf3590e812 /sound/soc/codecs/wm9705.c
parentac37373b6463d32955c6ac6b753d5e5b0946a791 (diff)
ASoC: Driver for the WM9705 AC97 codec.
This driver adds support for the wm9705 ac97 codec. The driver supports audio input and output. Signed-off-by: Ian Molton <ian@mnementh.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/wm9705.c')
-rw-r--r--sound/soc/codecs/wm9705.c410
1 files changed, 410 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm9705.c b/sound/soc/codecs/wm9705.c
new file mode 100644
index 000000000000..cb26b6a77ffb
--- /dev/null
+++ b/sound/soc/codecs/wm9705.c
@@ -0,0 +1,410 @@
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
23/*
24 * WM9705 register cache
25 */
26static const u16 wm9705_reg[] = {
27 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */
28 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */
29 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
30 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
31 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
32 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
33 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
34 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
35 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
36 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
37 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
38 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
39 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
40 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
41 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
42 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
43};
44
45static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
46 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
47 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
48 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
49 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
50 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
51 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
52 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
53 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
54 SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
55 SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
56 SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
57 SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
58 SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
59 SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
60 SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
61 SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
62};
63
64static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
65static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
66 "Line", "Stereo Mix", "Mono Mix", "Phone"};
67
68static const struct soc_enum wm9705_enum_mic =
69 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic);
70static const struct soc_enum wm9705_enum_rec_l =
71 SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel);
72static const struct soc_enum wm9705_enum_rec_r =
73 SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel);
74
75/* Headphone Mixer */
76static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
77 SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
78 SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
79 SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
80 SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
81 SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
82};
83
84/* Mic source */
85static const struct snd_kcontrol_new wm9705_mic_src_controls =
86 SOC_DAPM_ENUM("Route", wm9705_enum_mic);
87
88/* Capture source */
89static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
90 SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
91static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
92 SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
93
94/* DAPM widgets */
95static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
96 SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
97 &wm9705_mic_src_controls),
98 SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
99 &wm9705_capture_selectl_controls),
100 SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
101 &wm9705_capture_selectr_controls),
102 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
103 SND_SOC_NOPM, 0, 0),
104 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
105 SND_SOC_NOPM, 0, 0),
106 SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
107 &wm9705_hp_mixer_controls[0],
108 ARRAY_SIZE(wm9705_hp_mixer_controls)),
109 SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
110 SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
111 SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
112 SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
113 SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
114 SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
115 SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
116 SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
117 SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
118 SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
119 SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
120 SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
121 SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
122 SND_SOC_DAPM_OUTPUT("HPOUTL"),
123 SND_SOC_DAPM_OUTPUT("HPOUTR"),
124 SND_SOC_DAPM_OUTPUT("LOUT"),
125 SND_SOC_DAPM_OUTPUT("ROUT"),
126 SND_SOC_DAPM_OUTPUT("MONOOUT"),
127 SND_SOC_DAPM_INPUT("PHONE"),
128 SND_SOC_DAPM_INPUT("LINEINL"),
129 SND_SOC_DAPM_INPUT("LINEINR"),
130 SND_SOC_DAPM_INPUT("CDINL"),
131 SND_SOC_DAPM_INPUT("CDINR"),
132 SND_SOC_DAPM_INPUT("PCBEEP"),
133 SND_SOC_DAPM_INPUT("MIC1"),
134 SND_SOC_DAPM_INPUT("MIC2"),
135};
136
137/* Audio map
138 * WM9705 has no switches to disable the route from the inputs to the HP mixer
139 * so in order to prevent active inputs from forcing the audio outputs to be
140 * constantly enabled, we use the mutes on those inputs to simulate such
141 * controls.
142 */
143static const struct snd_soc_dapm_route audio_map[] = {
144 /* HP mixer */
145 {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
146 {"HP Mixer", "CD Playback Switch", "CD PGA"},
147 {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
148 {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
149 {"HP Mixer", "Line Playback Switch", "Line PGA"},
150 {"HP Mixer", NULL, "Left DAC"},
151 {"HP Mixer", NULL, "Right DAC"},
152
153 /* mono mixer */
154 {"Mono Mixer", NULL, "HP Mixer"},
155
156 /* outputs */
157 {"Headphone PGA", NULL, "HP Mixer"},
158 {"HPOUTL", NULL, "Headphone PGA"},
159 {"HPOUTR", NULL, "Headphone PGA"},
160 {"Line out PGA", NULL, "HP Mixer"},
161 {"LOUT", NULL, "Line out PGA"},
162 {"ROUT", NULL, "Line out PGA"},
163 {"Mono PGA", NULL, "Mono Mixer"},
164 {"MONOOUT", NULL, "Mono PGA"},
165
166 /* inputs */
167 {"CD PGA", NULL, "CDINL"},
168 {"CD PGA", NULL, "CDINR"},
169 {"Line PGA", NULL, "LINEINL"},
170 {"Line PGA", NULL, "LINEINR"},
171 {"Phone PGA", NULL, "PHONE"},
172 {"Mic Source", "Mic 1", "MIC1"},
173 {"Mic Source", "Mic 2", "MIC2"},
174 {"Mic PGA", NULL, "Mic Source"},
175 {"PCBEEP PGA", NULL, "PCBEEP"},
176
177 /* Left capture selector */
178 {"Left Capture Source", "Mic", "Mic Source"},
179 {"Left Capture Source", "CD", "CDINL"},
180 {"Left Capture Source", "Line", "LINEINL"},
181 {"Left Capture Source", "Stereo Mix", "HP Mixer"},
182 {"Left Capture Source", "Mono Mix", "HP Mixer"},
183 {"Left Capture Source", "Phone", "PHONE"},
184
185 /* Right capture source */
186 {"Right Capture Source", "Mic", "Mic Source"},
187 {"Right Capture Source", "CD", "CDINR"},
188 {"Right Capture Source", "Line", "LINEINR"},
189 {"Right Capture Source", "Stereo Mix", "HP Mixer"},
190 {"Right Capture Source", "Mono Mix", "HP Mixer"},
191 {"Right Capture Source", "Phone", "PHONE"},
192
193 {"ADC PGA", NULL, "Left Capture Source"},
194 {"ADC PGA", NULL, "Right Capture Source"},
195
196 /* ADC's */
197 {"Left ADC", NULL, "ADC PGA"},
198 {"Right ADC", NULL, "ADC PGA"},
199};
200
201static int wm9705_add_widgets(struct snd_soc_codec *codec)
202{
203 snd_soc_dapm_new_controls(codec, wm9705_dapm_widgets,
204 ARRAY_SIZE(wm9705_dapm_widgets));
205 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
206 snd_soc_dapm_new_widgets(codec);
207
208 return 0;
209}
210
211/* We use a register cache to enhance read performance. */
212static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
213{
214 u16 *cache = codec->reg_cache;
215
216 switch (reg) {
217 case AC97_RESET:
218 case AC97_VENDOR_ID1:
219 case AC97_VENDOR_ID2:
220 return soc_ac97_ops.read(codec->ac97, reg);
221 default:
222 reg = reg >> 1;
223
224 if (reg >= (ARRAY_SIZE(wm9705_reg)))
225 return -EIO;
226
227 return cache[reg];
228 }
229}
230
231static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
232 unsigned int val)
233{
234 u16 *cache = codec->reg_cache;
235
236 soc_ac97_ops.write(codec->ac97, reg, val);
237 reg = reg >> 1;
238 if (reg < (ARRAY_SIZE(wm9705_reg)))
239 cache[reg] = val;
240
241 return 0;
242}
243
244static int ac97_prepare(struct snd_pcm_substream *substream,
245 struct snd_soc_dai *dai)
246{
247 struct snd_pcm_runtime *runtime = substream->runtime;
248 struct snd_soc_pcm_runtime *rtd = substream->private_data;
249 struct snd_soc_device *socdev = rtd->socdev;
250 struct snd_soc_codec *codec = socdev->codec;
251 int reg;
252 u16 vra;
253
254 vra = ac97_read(codec, AC97_EXTENDED_STATUS);
255 ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
256
257 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
258 reg = AC97_PCM_FRONT_DAC_RATE;
259 else
260 reg = AC97_PCM_LR_ADC_RATE;
261
262 return ac97_write(codec, reg, runtime->rate);
263}
264
265#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
266 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
267 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
268 SNDRV_PCM_RATE_48000)
269
270struct snd_soc_dai wm9705_dai[] = {
271 {
272 .name = "AC97 HiFi",
273 .ac97_control = 1,
274 .playback = {
275 .stream_name = "HiFi Playback",
276 .channels_min = 1,
277 .channels_max = 2,
278 .rates = WM9705_AC97_RATES,
279 .formats = SNDRV_PCM_FMTBIT_S16_LE,
280 },
281 .capture = {
282 .stream_name = "HiFi Capture",
283 .channels_min = 1,
284 .channels_max = 2,
285 .rates = WM9705_AC97_RATES,
286 .formats = SNDRV_PCM_FMTBIT_S16_LE,
287 },
288 .ops = {
289 .prepare = ac97_prepare,
290 },
291 },
292 {
293 .name = "AC97 Aux",
294 .playback = {
295 .stream_name = "Aux Playback",
296 .channels_min = 1,
297 .channels_max = 1,
298 .rates = WM9705_AC97_RATES,
299 .formats = SNDRV_PCM_FMTBIT_S16_LE,
300 },
301 }
302};
303EXPORT_SYMBOL_GPL(wm9705_dai);
304
305static int wm9705_reset(struct snd_soc_codec *codec)
306{
307 if (soc_ac97_ops.reset) {
308 soc_ac97_ops.reset(codec->ac97);
309 if (ac97_read(codec, 0) == wm9705_reg[0])
310 return 0; /* Success */
311 }
312
313 return -EIO;
314}
315
316static int wm9705_soc_probe(struct platform_device *pdev)
317{
318 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
319 struct snd_soc_codec *codec;
320 int ret = 0;
321
322 printk(KERN_INFO "WM9705 SoC Audio Codec\n");
323
324 socdev->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
325 if (socdev->codec == NULL)
326 return -ENOMEM;
327 codec = socdev->codec;
328 mutex_init(&codec->mutex);
329
330 codec->reg_cache = kmemdup(wm9705_reg, sizeof(wm9705_reg), GFP_KERNEL);
331 if (codec->reg_cache == NULL) {
332 ret = -ENOMEM;
333 goto cache_err;
334 }
335 codec->reg_cache_size = sizeof(wm9705_reg);
336 codec->reg_cache_step = 2;
337
338 codec->name = "WM9705";
339 codec->owner = THIS_MODULE;
340 codec->dai = wm9705_dai;
341 codec->num_dai = ARRAY_SIZE(wm9705_dai);
342 codec->write = ac97_write;
343 codec->read = ac97_read;
344 INIT_LIST_HEAD(&codec->dapm_widgets);
345 INIT_LIST_HEAD(&codec->dapm_paths);
346
347 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
348 if (ret < 0) {
349 printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
350 goto codec_err;
351 }
352
353 /* register pcms */
354 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
355 if (ret < 0)
356 goto pcm_err;
357
358 ret = wm9705_reset(codec);
359 if (ret)
360 goto reset_err;
361
362 snd_soc_add_controls(codec, wm9705_snd_ac97_controls,
363 ARRAY_SIZE(wm9705_snd_ac97_controls));
364 wm9705_add_widgets(codec);
365
366 ret = snd_soc_init_card(socdev);
367 if (ret < 0) {
368 printk(KERN_ERR "wm9705: failed to register card\n");
369 goto pcm_err;
370 }
371
372 return 0;
373
374reset_err:
375 snd_soc_free_pcms(socdev);
376pcm_err:
377 snd_soc_free_ac97_codec(codec);
378codec_err:
379 kfree(codec->reg_cache);
380cache_err:
381 kfree(socdev->codec);
382 socdev->codec = NULL;
383 return ret;
384}
385
386static int wm9705_soc_remove(struct platform_device *pdev)
387{
388 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
389 struct snd_soc_codec *codec = socdev->codec;
390
391 if (codec == NULL)
392 return 0;
393
394 snd_soc_dapm_free(socdev);
395 snd_soc_free_pcms(socdev);
396 snd_soc_free_ac97_codec(codec);
397 kfree(codec->reg_cache);
398 kfree(codec);
399 return 0;
400}
401
402struct snd_soc_codec_device soc_codec_dev_wm9705 = {
403 .probe = wm9705_soc_probe,
404 .remove = wm9705_soc_remove,
405};
406EXPORT_SYMBOL_GPL(soc_codec_dev_wm9705);
407
408MODULE_DESCRIPTION("ASoC WM9705 driver");
409MODULE_AUTHOR("Ian Molton");
410MODULE_LICENSE("GPL v2");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-27 07:38:56 -0500