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Linux/sound/soc/codecs/stac9766.c

  1 /*
  2  * stac9766.c  --  ALSA SoC STAC9766 codec support
  3  *
  4  * Copyright 2009 Jon Smirl, Digispeaker
  5  * Author: Jon Smirl <jonsmirl@gmail.com>
  6  *
  7  *  This program is free software; you can redistribute  it and/or modify it
  8  *  under  the terms of  the GNU General  Public License as published by the
  9  *  Free Software Foundation;  either version 2 of the  License, or (at your
 10  *  option) any later version.
 11  *
 12  *  Features:-
 13  *
 14  *   o Support for AC97 Codec, S/PDIF
 15  */
 16 
 17 #include <linux/init.h>
 18 #include <linux/slab.h>
 19 #include <linux/module.h>
 20 #include <linux/device.h>
 21 #include <linux/regmap.h>
 22 #include <sound/core.h>
 23 #include <sound/pcm.h>
 24 #include <sound/ac97_codec.h>
 25 #include <sound/initval.h>
 26 #include <sound/pcm_params.h>
 27 #include <sound/soc.h>
 28 #include <sound/tlv.h>
 29 
 30 #define STAC9766_VENDOR_ID 0x83847666
 31 #define STAC9766_VENDOR_ID_MASK 0xffffffff
 32 
 33 #define AC97_STAC_DA_CONTROL 0x6A
 34 #define AC97_STAC_ANALOG_SPECIAL 0x6E
 35 #define AC97_STAC_STEREO_MIC 0x78
 36 
 37 static const struct reg_default stac9766_reg_defaults[] = {
 38         { 0x02, 0x8000 },
 39         { 0x04, 0x8000 },
 40         { 0x06, 0x8000 },
 41         { 0x0a, 0x0000 },
 42         { 0x0c, 0x8008 },
 43         { 0x0e, 0x8008 },
 44         { 0x10, 0x8808 },
 45         { 0x12, 0x8808 },
 46         { 0x14, 0x8808 },
 47         { 0x16, 0x8808 },
 48         { 0x18, 0x8808 },
 49         { 0x1a, 0x0000 },
 50         { 0x1c, 0x8000 },
 51         { 0x20, 0x0000 },
 52         { 0x22, 0x0000 },
 53         { 0x28, 0x0a05 },
 54         { 0x2c, 0xbb80 },
 55         { 0x32, 0xbb80 },
 56         { 0x3a, 0x2000 },
 57         { 0x3e, 0x0100 },
 58         { 0x4c, 0x0300 },
 59         { 0x4e, 0xffff },
 60         { 0x50, 0x0000 },
 61         { 0x52, 0x0000 },
 62         { 0x54, 0x0000 },
 63         { 0x6a, 0x0000 },
 64         { 0x6e, 0x1000 },
 65         { 0x72, 0x0000 },
 66         { 0x78, 0x0000 },
 67 };
 68 
 69 static const struct regmap_config stac9766_regmap_config = {
 70         .reg_bits = 16,
 71         .reg_stride = 2,
 72         .val_bits = 16,
 73         .max_register = 0x78,
 74         .cache_type = REGCACHE_RBTREE,
 75 
 76         .volatile_reg = regmap_ac97_default_volatile,
 77 
 78         .reg_defaults = stac9766_reg_defaults,
 79         .num_reg_defaults = ARRAY_SIZE(stac9766_reg_defaults),
 80 };
 81 
 82 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
 83                         "Line", "Stereo Mix", "Mono Mix", "Phone"};
 84 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
 85 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
 86 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
 87 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
 88 static const char *stac9766_record_all_mux[] = {"All analog",
 89         "Analog plus DAC"};
 90 static const char *stac9766_boost1[] = {"0dB", "10dB"};
 91 static const char *stac9766_boost2[] = {"0dB", "20dB"};
 92 static const char *stac9766_stereo_mic[] = {"Off", "On"};
 93 
 94 static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
 95                             AC97_REC_SEL, 8, 0, stac9766_record_mux);
 96 static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
 97                             AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
 98 static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
 99                             AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
100 static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
101                             AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
102 static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
103                             AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
104 static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
105                             AC97_STAC_ANALOG_SPECIAL, 12,
106                             stac9766_record_all_mux);
107 static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
108                             AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
109 static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
110                             AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
111 static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
112                             AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
113 
114 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(master_tlv, -4650, 150, 0);
115 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(record_tlv,     0, 150, 0);
116 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(beep_tlv,   -4500, 300, 0);
117 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(mix_tlv,    -3450, 150, 0);
118 
119 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
120         SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
121         SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
122         SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
123                        master_tlv),
124         SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
125         SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
126                        master_tlv),
127         SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
128 
129         SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
130         SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
131 
132 
133         SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
134         SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
135         SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
136         SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
137         SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
138 
139         SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
140         SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
141         SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
142         SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
143         SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
144 
145         SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
146         SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
147         SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
148         SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
149         SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
150         SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
151         SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
152         SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
153 
154         SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
155         SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
156         SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
157         SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
158         SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
159 
160         SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
161         SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
162         SOC_ENUM("Record All Mux", stac9766_record_all_enum),
163         SOC_ENUM("Record Mux", stac9766_record_enum),
164         SOC_ENUM("Mono Mux", stac9766_mono_enum),
165         SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
166 };
167 
168 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
169                                struct snd_soc_dai *dai)
170 {
171         struct snd_soc_codec *codec = dai->codec;
172         struct snd_pcm_runtime *runtime = substream->runtime;
173         unsigned short reg;
174 
175         /* enable variable rate audio, disable SPDIF output */
176         snd_soc_update_bits(codec, AC97_EXTENDED_STATUS, 0x5, 0x1);
177 
178         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
179                 reg = AC97_PCM_FRONT_DAC_RATE;
180         else
181                 reg = AC97_PCM_LR_ADC_RATE;
182 
183         return snd_soc_write(codec, reg, runtime->rate);
184 }
185 
186 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
187                                 struct snd_soc_dai *dai)
188 {
189         struct snd_soc_codec *codec = dai->codec;
190         struct snd_pcm_runtime *runtime = substream->runtime;
191         unsigned short reg;
192 
193         snd_soc_write(codec, AC97_SPDIF, 0x2002);
194 
195         /* Enable VRA and SPDIF out */
196         snd_soc_update_bits(codec, AC97_EXTENDED_STATUS, 0x5, 0x5);
197 
198         reg = AC97_PCM_FRONT_DAC_RATE;
199 
200         return snd_soc_write(codec, reg, runtime->rate);
201 }
202 
203 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
204                                    enum snd_soc_bias_level level)
205 {
206         switch (level) {
207         case SND_SOC_BIAS_ON: /* full On */
208         case SND_SOC_BIAS_PREPARE: /* partial On */
209         case SND_SOC_BIAS_STANDBY: /* Off, with power */
210                 snd_soc_write(codec, AC97_POWERDOWN, 0x0000);
211                 break;
212         case SND_SOC_BIAS_OFF: /* Off, without power */
213                 /* disable everything including AC link */
214                 snd_soc_write(codec, AC97_POWERDOWN, 0xffff);
215                 break;
216         }
217         return 0;
218 }
219 
220 static int stac9766_codec_resume(struct snd_soc_codec *codec)
221 {
222         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
223 
224         return snd_ac97_reset(ac97, true, STAC9766_VENDOR_ID,
225                 STAC9766_VENDOR_ID_MASK);
226 }
227 
228 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
229         .prepare = ac97_analog_prepare,
230 };
231 
232 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
233         .prepare = ac97_digital_prepare,
234 };
235 
236 static struct snd_soc_dai_driver stac9766_dai[] = {
237 {
238         .name = "stac9766-hifi-analog",
239 
240         /* stream cababilities */
241         .playback = {
242                 .stream_name = "stac9766 analog",
243                 .channels_min = 1,
244                 .channels_max = 2,
245                 .rates = SNDRV_PCM_RATE_8000_48000,
246                 .formats = SND_SOC_STD_AC97_FMTS,
247         },
248         .capture = {
249                 .stream_name = "stac9766 analog",
250                 .channels_min = 1,
251                 .channels_max = 2,
252                 .rates = SNDRV_PCM_RATE_8000_48000,
253                 .formats = SND_SOC_STD_AC97_FMTS,
254         },
255         /* alsa ops */
256         .ops = &stac9766_dai_ops_analog,
257 },
258 {
259         .name = "stac9766-hifi-IEC958",
260 
261         /* stream cababilities */
262         .playback = {
263                 .stream_name = "stac9766 IEC958",
264                 .channels_min = 1,
265                 .channels_max = 2,
266                 .rates = SNDRV_PCM_RATE_32000 | \
267                         SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
268                 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
269         },
270         /* alsa ops */
271         .ops = &stac9766_dai_ops_digital,
272 }
273 };
274 
275 static int stac9766_codec_probe(struct snd_soc_codec *codec)
276 {
277         struct snd_ac97 *ac97;
278         struct regmap *regmap;
279         int ret;
280 
281         ac97 = snd_soc_new_ac97_codec(codec, STAC9766_VENDOR_ID,
282                         STAC9766_VENDOR_ID_MASK);
283         if (IS_ERR(ac97))
284                 return PTR_ERR(ac97);
285 
286         regmap = regmap_init_ac97(ac97, &stac9766_regmap_config);
287         if (IS_ERR(regmap)) {
288                 ret = PTR_ERR(regmap);
289                 goto err_free_ac97;
290         }
291 
292         snd_soc_codec_init_regmap(codec, regmap);
293         snd_soc_codec_set_drvdata(codec, ac97);
294 
295         return 0;
296 err_free_ac97:
297         snd_soc_free_ac97_codec(ac97);
298         return ret;
299 }
300 
301 static int stac9766_codec_remove(struct snd_soc_codec *codec)
302 {
303         struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
304 
305         snd_soc_codec_exit_regmap(codec);
306         snd_soc_free_ac97_codec(ac97);
307         return 0;
308 }
309 
310 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
311         .component_driver = {
312                 .controls               = stac9766_snd_ac97_controls,
313                 .num_controls           = ARRAY_SIZE(stac9766_snd_ac97_controls),
314         },
315         .set_bias_level = stac9766_set_bias_level,
316         .suspend_bias_off = true,
317         .probe = stac9766_codec_probe,
318         .remove = stac9766_codec_remove,
319         .resume = stac9766_codec_resume,
320 };
321 
322 static int stac9766_probe(struct platform_device *pdev)
323 {
324         return snd_soc_register_codec(&pdev->dev,
325                         &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
326 }
327 
328 static int stac9766_remove(struct platform_device *pdev)
329 {
330         snd_soc_unregister_codec(&pdev->dev);
331         return 0;
332 }
333 
334 static struct platform_driver stac9766_codec_driver = {
335         .driver = {
336                         .name = "stac9766-codec",
337         },
338 
339         .probe = stac9766_probe,
340         .remove = stac9766_remove,
341 };
342 
343 module_platform_driver(stac9766_codec_driver);
344 
345 MODULE_DESCRIPTION("ASoC stac9766 driver");
346 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
347 MODULE_LICENSE("GPL");
348 

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