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Linux/sound/soc/codecs/wm9705.c

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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/slab.h>
 14 #include <linux/mfd/wm97xx.h>
 15 #include <linux/module.h>
 16 #include <linux/kernel.h>
 17 #include <linux/device.h>
 18 #include <linux/regmap.h>
 19 #include <sound/core.h>
 20 #include <sound/pcm.h>
 21 #include <sound/ac97_codec.h>
 22 #include <sound/ac97/codec.h>
 23 #include <sound/ac97/compat.h>
 24 #include <sound/initval.h>
 25 #include <sound/soc.h>
 26 
 27 #define WM9705_VENDOR_ID 0x574d4c05
 28 #define WM9705_VENDOR_ID_MASK 0xffffffff
 29 
 30 struct wm9705_priv {
 31         struct snd_ac97 *ac97;
 32         struct wm97xx_platform_data *mfd_pdata;
 33 };
 34 
 35 static const struct reg_default wm9705_reg_defaults[] = {
 36         { 0x02, 0x8000 },
 37         { 0x04, 0x8000 },
 38         { 0x06, 0x8000 },
 39         { 0x0a, 0x8000 },
 40         { 0x0c, 0x8008 },
 41         { 0x0e, 0x8008 },
 42         { 0x10, 0x8808 },
 43         { 0x12, 0x8808 },
 44         { 0x14, 0x8808 },
 45         { 0x16, 0x8808 },
 46         { 0x18, 0x8808 },
 47         { 0x1a, 0x0000 },
 48         { 0x1c, 0x8000 },
 49         { 0x20, 0x0000 },
 50         { 0x22, 0x0000 },
 51         { 0x26, 0x000f },
 52         { 0x28, 0x0605 },
 53         { 0x2a, 0x0000 },
 54         { 0x2c, 0xbb80 },
 55         { 0x32, 0xbb80 },
 56         { 0x34, 0x2000 },
 57         { 0x5a, 0x0000 },
 58         { 0x5c, 0x0000 },
 59         { 0x72, 0x0808 },
 60         { 0x74, 0x0000 },
 61         { 0x76, 0x0006 },
 62         { 0x78, 0x0000 },
 63         { 0x7a, 0x0000 },
 64 };
 65 
 66 static const struct regmap_config wm9705_regmap_config = {
 67         .reg_bits = 16,
 68         .reg_stride = 2,
 69         .val_bits = 16,
 70         .max_register = 0x7e,
 71         .cache_type = REGCACHE_RBTREE,
 72 
 73         .volatile_reg = regmap_ac97_default_volatile,
 74 
 75         .reg_defaults = wm9705_reg_defaults,
 76         .num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
 77 };
 78 
 79 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
 80         SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
 81         SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
 82         SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
 83         SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
 84         SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
 85         SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
 86         SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
 87         SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
 88         SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
 89         SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
 90         SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
 91         SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
 92         SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
 93         SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
 94         SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
 95         SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
 96 };
 97 
 98 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
 99 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
100         "Line", "Stereo Mix", "Mono Mix", "Phone"};
101 
102 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
103                             AC97_GENERAL_PURPOSE, 8, wm9705_mic);
104 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
105                             AC97_REC_SEL, 8, wm9705_rec_sel);
106 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
107                             AC97_REC_SEL, 0, wm9705_rec_sel);
108 
109 /* Headphone Mixer */
110 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
111         SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
112         SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
113         SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
114         SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
115         SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
116 };
117 
118 /* Mic source */
119 static const struct snd_kcontrol_new wm9705_mic_src_controls =
120         SOC_DAPM_ENUM("Route", wm9705_enum_mic);
121 
122 /* Capture source */
123 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
124         SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
125 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
126         SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
127 
128 /* DAPM widgets */
129 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
130         SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
131                 &wm9705_mic_src_controls),
132         SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
133                 &wm9705_capture_selectl_controls),
134         SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
135                 &wm9705_capture_selectr_controls),
136         SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
137                 SND_SOC_NOPM, 0, 0),
138         SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
139                 SND_SOC_NOPM, 0, 0),
140         SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
141                 &wm9705_hp_mixer_controls[0],
142                 ARRAY_SIZE(wm9705_hp_mixer_controls)),
143         SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
144         SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
145         SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
146         SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
147         SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
148         SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
149         SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
150         SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
151         SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
152         SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
153         SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
154         SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
155         SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
156         SND_SOC_DAPM_OUTPUT("HPOUTL"),
157         SND_SOC_DAPM_OUTPUT("HPOUTR"),
158         SND_SOC_DAPM_OUTPUT("LOUT"),
159         SND_SOC_DAPM_OUTPUT("ROUT"),
160         SND_SOC_DAPM_OUTPUT("MONOOUT"),
161         SND_SOC_DAPM_INPUT("PHONE"),
162         SND_SOC_DAPM_INPUT("LINEINL"),
163         SND_SOC_DAPM_INPUT("LINEINR"),
164         SND_SOC_DAPM_INPUT("CDINL"),
165         SND_SOC_DAPM_INPUT("CDINR"),
166         SND_SOC_DAPM_INPUT("PCBEEP"),
167         SND_SOC_DAPM_INPUT("MIC1"),
168         SND_SOC_DAPM_INPUT("MIC2"),
169 };
170 
171 /* Audio map
172  * WM9705 has no switches to disable the route from the inputs to the HP mixer
173  * so in order to prevent active inputs from forcing the audio outputs to be
174  * constantly enabled, we use the mutes on those inputs to simulate such
175  * controls.
176  */
177 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
178         /* HP mixer */
179         {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
180         {"HP Mixer", "CD Playback Switch", "CD PGA"},
181         {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
182         {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
183         {"HP Mixer", "Line Playback Switch", "Line PGA"},
184         {"HP Mixer", NULL, "Left DAC"},
185         {"HP Mixer", NULL, "Right DAC"},
186 
187         /* mono mixer */
188         {"Mono Mixer", NULL, "HP Mixer"},
189 
190         /* outputs */
191         {"Headphone PGA", NULL, "HP Mixer"},
192         {"HPOUTL", NULL, "Headphone PGA"},
193         {"HPOUTR", NULL, "Headphone PGA"},
194         {"Line out PGA", NULL, "HP Mixer"},
195         {"LOUT", NULL, "Line out PGA"},
196         {"ROUT", NULL, "Line out PGA"},
197         {"Mono PGA", NULL, "Mono Mixer"},
198         {"MONOOUT", NULL, "Mono PGA"},
199 
200         /* inputs */
201         {"CD PGA", NULL, "CDINL"},
202         {"CD PGA", NULL, "CDINR"},
203         {"Line PGA", NULL, "LINEINL"},
204         {"Line PGA", NULL, "LINEINR"},
205         {"Phone PGA", NULL, "PHONE"},
206         {"Mic Source", "Mic 1", "MIC1"},
207         {"Mic Source", "Mic 2", "MIC2"},
208         {"Mic PGA", NULL, "Mic Source"},
209         {"PCBEEP PGA", NULL, "PCBEEP"},
210 
211         /* Left capture selector */
212         {"Left Capture Source", "Mic", "Mic Source"},
213         {"Left Capture Source", "CD", "CDINL"},
214         {"Left Capture Source", "Line", "LINEINL"},
215         {"Left Capture Source", "Stereo Mix", "HP Mixer"},
216         {"Left Capture Source", "Mono Mix", "HP Mixer"},
217         {"Left Capture Source", "Phone", "PHONE"},
218 
219         /* Right capture source */
220         {"Right Capture Source", "Mic", "Mic Source"},
221         {"Right Capture Source", "CD", "CDINR"},
222         {"Right Capture Source", "Line", "LINEINR"},
223         {"Right Capture Source", "Stereo Mix", "HP Mixer"},
224         {"Right Capture Source", "Mono Mix", "HP Mixer"},
225         {"Right Capture Source", "Phone", "PHONE"},
226 
227         {"ADC PGA", NULL, "Left Capture Source"},
228         {"ADC PGA", NULL, "Right Capture Source"},
229 
230         /* ADC's */
231         {"Left ADC",  NULL, "ADC PGA"},
232         {"Right ADC", NULL, "ADC PGA"},
233 };
234 
235 static int ac97_prepare(struct snd_pcm_substream *substream,
236                         struct snd_soc_dai *dai)
237 {
238         struct snd_soc_component *component = dai->component;
239         int reg;
240 
241         snd_soc_component_update_bits(component, AC97_EXTENDED_STATUS, 0x1, 0x1);
242 
243         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
244                 reg = AC97_PCM_FRONT_DAC_RATE;
245         else
246                 reg = AC97_PCM_LR_ADC_RATE;
247 
248         return snd_soc_component_write(component, reg, substream->runtime->rate);
249 }
250 
251 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
252                         SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
253                         SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
254                         SNDRV_PCM_RATE_48000)
255 
256 static const struct snd_soc_dai_ops wm9705_dai_ops = {
257         .prepare        = ac97_prepare,
258 };
259 
260 static struct snd_soc_dai_driver wm9705_dai[] = {
261         {
262                 .name = "wm9705-hifi",
263                 .playback = {
264                         .stream_name = "HiFi Playback",
265                         .channels_min = 1,
266                         .channels_max = 2,
267                         .rates = WM9705_AC97_RATES,
268                         .formats = SND_SOC_STD_AC97_FMTS,
269                 },
270                 .capture = {
271                         .stream_name = "HiFi Capture",
272                         .channels_min = 1,
273                         .channels_max = 2,
274                         .rates = WM9705_AC97_RATES,
275                         .formats = SND_SOC_STD_AC97_FMTS,
276                 },
277                 .ops = &wm9705_dai_ops,
278         },
279         {
280                 .name = "wm9705-aux",
281                 .playback = {
282                         .stream_name = "Aux Playback",
283                         .channels_min = 1,
284                         .channels_max = 1,
285                         .rates = WM9705_AC97_RATES,
286                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
287                 },
288         }
289 };
290 
291 #ifdef CONFIG_PM
292 static int wm9705_soc_suspend(struct snd_soc_component *component)
293 {
294         regcache_cache_bypass(component->regmap, true);
295         snd_soc_component_write(component, AC97_POWERDOWN, 0xffff);
296         regcache_cache_bypass(component->regmap, false);
297 
298         return 0;
299 }
300 
301 static int wm9705_soc_resume(struct snd_soc_component *component)
302 {
303         struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
304         int ret;
305 
306         ret = snd_ac97_reset(wm9705->ac97, true, WM9705_VENDOR_ID,
307                 WM9705_VENDOR_ID_MASK);
308         if (ret < 0)
309                 return ret;
310 
311         snd_soc_component_cache_sync(component);
312 
313         return 0;
314 }
315 #else
316 #define wm9705_soc_suspend NULL
317 #define wm9705_soc_resume NULL
318 #endif
319 
320 static int wm9705_soc_probe(struct snd_soc_component *component)
321 {
322         struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
323         struct regmap *regmap;
324 
325         if (wm9705->mfd_pdata) {
326                 wm9705->ac97 = wm9705->mfd_pdata->ac97;
327                 regmap = wm9705->mfd_pdata->regmap;
328         } else if (IS_ENABLED(CONFIG_SND_SOC_AC97_BUS)) {
329                 wm9705->ac97 = snd_soc_new_ac97_component(component, WM9705_VENDOR_ID,
330                                                       WM9705_VENDOR_ID_MASK);
331                 if (IS_ERR(wm9705->ac97)) {
332                         dev_err(component->dev, "Failed to register AC97 codec\n");
333                         return PTR_ERR(wm9705->ac97);
334                 }
335 
336                 regmap = regmap_init_ac97(wm9705->ac97, &wm9705_regmap_config);
337                 if (IS_ERR(regmap)) {
338                         snd_soc_free_ac97_component(wm9705->ac97);
339                         return PTR_ERR(regmap);
340                 }
341         } else {
342                 return -ENXIO;
343         }
344 
345         snd_soc_component_set_drvdata(component, wm9705->ac97);
346         snd_soc_component_init_regmap(component, regmap);
347 
348         return 0;
349 }
350 
351 static void wm9705_soc_remove(struct snd_soc_component *component)
352 {
353         struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
354 
355         if (IS_ENABLED(CONFIG_SND_SOC_AC97_BUS) && !wm9705->mfd_pdata) {
356                 snd_soc_component_exit_regmap(component);
357                 snd_soc_free_ac97_component(wm9705->ac97);
358         }
359 }
360 
361 static const struct snd_soc_component_driver soc_component_dev_wm9705 = {
362         .probe                  = wm9705_soc_probe,
363         .remove                 = wm9705_soc_remove,
364         .suspend                = wm9705_soc_suspend,
365         .resume                 = wm9705_soc_resume,
366         .controls               = wm9705_snd_ac97_controls,
367         .num_controls           = ARRAY_SIZE(wm9705_snd_ac97_controls),
368         .dapm_widgets           = wm9705_dapm_widgets,
369         .num_dapm_widgets       = ARRAY_SIZE(wm9705_dapm_widgets),
370         .dapm_routes            = wm9705_audio_map,
371         .num_dapm_routes        = ARRAY_SIZE(wm9705_audio_map),
372         .idle_bias_on           = 1,
373         .use_pmdown_time        = 1,
374         .endianness             = 1,
375         .non_legacy_dai_naming  = 1,
376 };
377 
378 static int wm9705_probe(struct platform_device *pdev)
379 {
380         struct wm9705_priv *wm9705;
381 
382         wm9705 = devm_kzalloc(&pdev->dev, sizeof(*wm9705), GFP_KERNEL);
383         if (wm9705 == NULL)
384                 return -ENOMEM;
385 
386         wm9705->mfd_pdata = dev_get_platdata(&pdev->dev);
387         platform_set_drvdata(pdev, wm9705);
388 
389         return devm_snd_soc_register_component(&pdev->dev,
390                         &soc_component_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
391 }
392 
393 static struct platform_driver wm9705_codec_driver = {
394         .driver = {
395                         .name = "wm9705-codec",
396         },
397 
398         .probe = wm9705_probe,
399 };
400 
401 module_platform_driver(wm9705_codec_driver);
402 
403 MODULE_DESCRIPTION("ASoC WM9705 driver");
404 MODULE_AUTHOR("Ian Molton");
405 MODULE_LICENSE("GPL v2");
406 

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