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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 | */ | |
26 | static 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 | ||
45 | static 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), | |
927b0aea IM |
60 | SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0), |
61 | SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1), | |
2aceefef IM |
62 | }; |
63 | ||
64 | static const char *wm9705_mic[] = {"Mic 1", "Mic 2"}; | |
65 | static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC", | |
66 | "Line", "Stereo Mix", "Mono Mix", "Phone"}; | |
67 | ||
68 | static const struct soc_enum wm9705_enum_mic = | |
69 | SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic); | |
70 | static const struct soc_enum wm9705_enum_rec_l = | |
71 | SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel); | |
72 | static const struct soc_enum wm9705_enum_rec_r = | |
73 | SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel); | |
74 | ||
75 | /* Headphone Mixer */ | |
76 | static 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 */ | |
85 | static const struct snd_kcontrol_new wm9705_mic_src_controls = | |
86 | SOC_DAPM_ENUM("Route", wm9705_enum_mic); | |
87 | ||
88 | /* Capture source */ | |
89 | static const struct snd_kcontrol_new wm9705_capture_selectl_controls = | |
90 | SOC_DAPM_ENUM("Route", wm9705_enum_rec_l); | |
91 | static const struct snd_kcontrol_new wm9705_capture_selectr_controls = | |
92 | SOC_DAPM_ENUM("Route", wm9705_enum_rec_r); | |
93 | ||
94 | /* DAPM widgets */ | |
95 | static 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 | */ | |
143 | static 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 | ||
201 | static 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. */ | |
212 | static 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 | ||
231 | static 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 | ||
244 | static 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 | ||
270 | struct 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 | }; | |
303 | EXPORT_SYMBOL_GPL(wm9705_dai); | |
304 | ||
305 | static 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 | ||
316 | static 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 | ||
374 | reset_err: | |
375 | snd_soc_free_pcms(socdev); | |
376 | pcm_err: | |
377 | snd_soc_free_ac97_codec(codec); | |
378 | codec_err: | |
379 | kfree(codec->reg_cache); | |
380 | cache_err: | |
381 | kfree(socdev->codec); | |
382 | socdev->codec = NULL; | |
383 | return ret; | |
384 | } | |
385 | ||
386 | static 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 | ||
402 | struct snd_soc_codec_device soc_codec_dev_wm9705 = { | |
403 | .probe = wm9705_soc_probe, | |
404 | .remove = wm9705_soc_remove, | |
405 | }; | |
406 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm9705); | |
407 | ||
408 | MODULE_DESCRIPTION("ASoC WM9705 driver"); | |
409 | MODULE_AUTHOR("Ian Molton"); | |
410 | MODULE_LICENSE("GPL v2"); |