I2C: Add helper macro for i2c_driver boilerplate
[zen-stable.git] / sound / soc / codecs / wm9705.c
blob646b58dda849192777adc69d66ab54bb14891928
1 /*
2 * wm9705.c -- ALSA Soc WM9705 codec support
4 * Copyright 2008 Ian Molton <spyro@f2s.com>
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.
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>
23 #include "wm9705.h"
26 * WM9705 register cache
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 */
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),
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"};
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);
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),
86 /* Mic source */
87 static const struct snd_kcontrol_new wm9705_mic_src_controls =
88 SOC_DAPM_ENUM("Route", wm9705_enum_mic);
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);
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"),
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.
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"},
155 /* mono mixer */
156 {"Mono Mixer", NULL, "HP Mixer"},
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"},
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"},
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"},
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"},
195 {"ADC PGA", NULL, "Left Capture Source"},
196 {"ADC PGA", NULL, "Right Capture Source"},
198 /* ADC's */
199 {"Left ADC", NULL, "ADC PGA"},
200 {"Right ADC", NULL, "ADC PGA"},
203 /* We use a register cache to enhance read performance. */
204 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
206 u16 *cache = codec->reg_cache;
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;
216 if (reg >= (ARRAY_SIZE(wm9705_reg)))
217 return -EIO;
219 return cache[reg];
223 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
224 unsigned int val)
226 u16 *cache = codec->reg_cache;
228 soc_ac97_ops.write(codec->ac97, reg, val);
229 reg = reg >> 1;
230 if (reg < (ARRAY_SIZE(wm9705_reg)))
231 cache[reg] = val;
233 return 0;
236 static int ac97_prepare(struct snd_pcm_substream *substream,
237 struct snd_soc_dai *dai)
239 struct snd_pcm_runtime *runtime = substream->runtime;
240 struct snd_soc_pcm_runtime *rtd = substream->private_data;
241 struct snd_soc_codec *codec = rtd->codec;
242 int reg;
243 u16 vra;
245 vra = ac97_read(codec, AC97_EXTENDED_STATUS);
246 ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
248 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
249 reg = AC97_PCM_FRONT_DAC_RATE;
250 else
251 reg = AC97_PCM_LR_ADC_RATE;
253 return ac97_write(codec, reg, runtime->rate);
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)
261 static struct snd_soc_dai_ops wm9705_dai_ops = {
262 .prepare = ac97_prepare,
265 static struct snd_soc_dai_driver wm9705_dai[] = {
267 .name = "wm9705-hifi",
268 .ac97_control = 1,
269 .playback = {
270 .stream_name = "HiFi Playback",
271 .channels_min = 1,
272 .channels_max = 2,
273 .rates = WM9705_AC97_RATES,
274 .formats = SND_SOC_STD_AC97_FMTS,
276 .capture = {
277 .stream_name = "HiFi Capture",
278 .channels_min = 1,
279 .channels_max = 2,
280 .rates = WM9705_AC97_RATES,
281 .formats = SND_SOC_STD_AC97_FMTS,
283 .ops = &wm9705_dai_ops,
286 .name = "wm9705-aux",
287 .playback = {
288 .stream_name = "Aux Playback",
289 .channels_min = 1,
290 .channels_max = 1,
291 .rates = WM9705_AC97_RATES,
292 .formats = SNDRV_PCM_FMTBIT_S16_LE,
297 static int wm9705_reset(struct snd_soc_codec *codec)
299 if (soc_ac97_ops.reset) {
300 soc_ac97_ops.reset(codec->ac97);
301 if (ac97_read(codec, 0) == wm9705_reg[0])
302 return 0; /* Success */
305 return -EIO;
308 #ifdef CONFIG_PM
309 static int wm9705_soc_suspend(struct snd_soc_codec *codec, pm_message_t msg)
311 soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff);
313 return 0;
316 static int wm9705_soc_resume(struct snd_soc_codec *codec)
318 int i, ret;
319 u16 *cache = codec->reg_cache;
321 ret = wm9705_reset(codec);
322 if (ret < 0) {
323 printk(KERN_ERR "could not reset AC97 codec\n");
324 return ret;
327 for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
328 soc_ac97_ops.write(codec->ac97, i, cache[i>>1]);
331 return 0;
333 #else
334 #define wm9705_soc_suspend NULL
335 #define wm9705_soc_resume NULL
336 #endif
338 static int wm9705_soc_probe(struct snd_soc_codec *codec)
340 int ret = 0;
342 printk(KERN_INFO "WM9705 SoC Audio Codec\n");
344 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
345 if (ret < 0) {
346 printk(KERN_ERR "wm9705: failed to register AC97 codec\n");
347 return ret;
350 ret = wm9705_reset(codec);
351 if (ret)
352 goto reset_err;
354 snd_soc_add_controls(codec, wm9705_snd_ac97_controls,
355 ARRAY_SIZE(wm9705_snd_ac97_controls));
357 return 0;
359 reset_err:
360 snd_soc_free_ac97_codec(codec);
361 return ret;
364 static int wm9705_soc_remove(struct snd_soc_codec *codec)
366 snd_soc_free_ac97_codec(codec);
367 return 0;
370 static struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
371 .probe = wm9705_soc_probe,
372 .remove = wm9705_soc_remove,
373 .suspend = wm9705_soc_suspend,
374 .resume = wm9705_soc_resume,
375 .read = ac97_read,
376 .write = ac97_write,
377 .reg_cache_size = ARRAY_SIZE(wm9705_reg),
378 .reg_word_size = sizeof(u16),
379 .reg_cache_step = 2,
380 .reg_cache_default = wm9705_reg,
381 .dapm_widgets = wm9705_dapm_widgets,
382 .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets),
383 .dapm_routes = wm9705_audio_map,
384 .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map),
387 static __devinit int wm9705_probe(struct platform_device *pdev)
389 return snd_soc_register_codec(&pdev->dev,
390 &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
393 static int __devexit wm9705_remove(struct platform_device *pdev)
395 snd_soc_unregister_codec(&pdev->dev);
396 return 0;
399 static struct platform_driver wm9705_codec_driver = {
400 .driver = {
401 .name = "wm9705-codec",
402 .owner = THIS_MODULE,
405 .probe = wm9705_probe,
406 .remove = __devexit_p(wm9705_remove),
409 static int __init wm9705_init(void)
411 return platform_driver_register(&wm9705_codec_driver);
413 module_init(wm9705_init);
415 static void __exit wm9705_exit(void)
417 platform_driver_unregister(&wm9705_codec_driver);
419 module_exit(wm9705_exit);
421 MODULE_DESCRIPTION("ASoC WM9705 driver");
422 MODULE_AUTHOR("Ian Molton");
423 MODULE_LICENSE("GPL v2");