2 * stac9766.c -- ALSA SoC STAC9766 codec support
4 * Copyright 2009 Jon Smirl, Digispeaker
5 * Author: Jon Smirl <jonsmirl@gmail.com>
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.
14 * o Support for AC97 Codec, S/PDIF
17 #include <linux/init.h>
18 #include <linux/module.h>
19 #include <linux/device.h>
20 #include <sound/core.h>
21 #include <sound/pcm.h>
22 #include <sound/ac97_codec.h>
23 #include <sound/initval.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/tlv.h>
27 #include <sound/soc-of-simple.h>
31 #define STAC9766_VERSION "0.10"
34 * STAC9766 register cache
36 static const u16 stac9766_reg[] = {
37 0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
38 0x0000, 0x0000, 0x8008, 0x8008, /* e */
39 0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
40 0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
41 0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
42 0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
43 0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
44 0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
45 0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
46 0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
47 0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
48 0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
49 0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */
50 0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
51 0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
52 0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
55 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
56 "Line", "Stereo Mix", "Mono Mix", "Phone"};
57 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
58 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
59 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
60 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
61 static const char *stac9766_record_all_mux[] = {"All analog",
63 static const char *stac9766_boost1[] = {"0dB", "10dB"};
64 static const char *stac9766_boost2[] = {"0dB", "20dB"};
65 static const char *stac9766_stereo_mic[] = {"Off", "On"};
67 static const struct soc_enum stac9766_record_enum =
68 SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, stac9766_record_mux);
69 static const struct soc_enum stac9766_mono_enum =
70 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 9, 2, stac9766_mono_mux);
71 static const struct soc_enum stac9766_mic_enum =
72 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, stac9766_mic_mux);
73 static const struct soc_enum stac9766_SPDIF_enum =
74 SOC_ENUM_SINGLE(AC97_STAC_DA_CONTROL, 1, 2, stac9766_SPDIF_mux);
75 static const struct soc_enum stac9766_popbypass_enum =
76 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 15, 2, stac9766_popbypass_mux);
77 static const struct soc_enum stac9766_record_all_enum =
78 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 12, 2,
79 stac9766_record_all_mux);
80 static const struct soc_enum stac9766_boost1_enum =
81 SOC_ENUM_SINGLE(AC97_MIC, 6, 2, stac9766_boost1); /* 0/10dB */
82 static const struct soc_enum stac9766_boost2_enum =
83 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 2, 2, stac9766_boost2); /* 0/20dB */
84 static const struct soc_enum stac9766_stereo_mic_enum =
85 SOC_ENUM_SINGLE(AC97_STAC_STEREO_MIC, 2, 1, stac9766_stereo_mic);
87 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
88 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
89 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
90 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);
92 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
93 SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
94 SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
95 SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
97 SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
98 SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
100 SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
102 SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
103 SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
106 SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
107 SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
108 SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
109 SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
110 SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
112 SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
113 SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
114 SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
115 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
116 SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
118 SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
119 SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
120 SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
121 SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
122 SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
123 SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
124 SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
125 SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
127 SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
128 SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
129 SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
130 SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
131 SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
133 SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
134 SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
135 SOC_ENUM("Record All Mux", stac9766_record_all_enum),
136 SOC_ENUM("Record Mux", stac9766_record_enum),
137 SOC_ENUM("Mono Mux", stac9766_mono_enum),
138 SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
141 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
144 u16 *cache = codec->reg_cache;
146 if (reg > AC97_STAC_PAGE0) {
147 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
148 soc_ac97_ops.write(codec->ac97, reg, val);
149 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
152 if (reg / 2 > ARRAY_SIZE(stac9766_reg))
155 soc_ac97_ops.write(codec->ac97, reg, val);
156 cache[reg / 2] = val;
160 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
163 u16 val = 0, *cache = codec->reg_cache;
165 if (reg > AC97_STAC_PAGE0) {
166 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
167 val = soc_ac97_ops.read(codec->ac97, reg - AC97_STAC_PAGE0);
168 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
171 if (reg / 2 > ARRAY_SIZE(stac9766_reg))
174 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
175 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
176 reg == AC97_VENDOR_ID2) {
178 val = soc_ac97_ops.read(codec->ac97, reg);
181 return cache[reg / 2];
184 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
185 struct snd_soc_dai *dai)
187 struct snd_soc_codec *codec = dai->codec;
188 struct snd_pcm_runtime *runtime = substream->runtime;
189 unsigned short reg, vra;
191 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
193 vra |= 0x1; /* enable variable rate audio */
195 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
197 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
198 reg = AC97_PCM_FRONT_DAC_RATE;
200 reg = AC97_PCM_LR_ADC_RATE;
202 return stac9766_ac97_write(codec, reg, runtime->rate);
205 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
206 struct snd_soc_dai *dai)
208 struct snd_soc_codec *codec = dai->codec;
209 struct snd_pcm_runtime *runtime = substream->runtime;
210 unsigned short reg, vra;
212 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
214 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
215 vra |= 0x5; /* Enable VRA and SPDIF out */
217 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
219 reg = AC97_PCM_FRONT_DAC_RATE;
221 return stac9766_ac97_write(codec, reg, runtime->rate);
224 static int ac97_digital_trigger(struct snd_pcm_substream *substream,
225 int cmd, struct snd_soc_dai *dai)
227 struct snd_soc_codec *codec = dai->codec;
231 case SNDRV_PCM_TRIGGER_STOP:
232 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
234 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
240 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
241 enum snd_soc_bias_level level)
244 case SND_SOC_BIAS_ON: /* full On */
245 case SND_SOC_BIAS_PREPARE: /* partial On */
246 case SND_SOC_BIAS_STANDBY: /* Off, with power */
247 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
249 case SND_SOC_BIAS_OFF: /* Off, without power */
250 /* disable everything including AC link */
251 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
254 codec->bias_level = level;
258 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
260 if (try_warm && soc_ac97_ops.warm_reset) {
261 soc_ac97_ops.warm_reset(codec->ac97);
262 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
266 soc_ac97_ops.reset(codec->ac97);
267 if (soc_ac97_ops.warm_reset)
268 soc_ac97_ops.warm_reset(codec->ac97);
269 if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
274 static int stac9766_codec_suspend(struct platform_device *pdev,
277 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
278 struct snd_soc_codec *codec = socdev->card->codec;
280 stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF);
284 static int stac9766_codec_resume(struct platform_device *pdev)
286 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
287 struct snd_soc_codec *codec = socdev->card->codec;
291 /* give the codec an AC97 warm reset to start the link */
294 printk(KERN_ERR "stac9766 failed to resume");
297 codec->ac97->bus->ops->warm_reset(codec->ac97);
298 id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2);
300 stac9766_reset(codec, 0);
304 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
306 if (codec->suspend_bias_level == SND_SOC_BIAS_ON)
307 stac9766_set_bias_level(codec, SND_SOC_BIAS_ON);
312 static struct snd_soc_dai_ops stac9766_dai_ops_analog = {
313 .prepare = ac97_analog_prepare,
316 static struct snd_soc_dai_ops stac9766_dai_ops_digital = {
317 .prepare = ac97_digital_prepare,
318 .trigger = ac97_digital_trigger,
321 struct snd_soc_dai stac9766_dai[] = {
323 .name = "stac9766 analog",
327 /* stream cababilities */
329 .stream_name = "stac9766 analog",
332 .rates = SNDRV_PCM_RATE_8000_48000,
333 .formats = SND_SOC_STD_AC97_FMTS,
336 .stream_name = "stac9766 analog",
339 .rates = SNDRV_PCM_RATE_8000_48000,
340 .formats = SND_SOC_STD_AC97_FMTS,
343 .ops = &stac9766_dai_ops_analog,
346 .name = "stac9766 IEC958",
350 /* stream cababilities */
352 .stream_name = "stac9766 IEC958",
355 .rates = SNDRV_PCM_RATE_32000 | \
356 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
357 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
360 .ops = &stac9766_dai_ops_digital,
363 EXPORT_SYMBOL_GPL(stac9766_dai);
365 static int stac9766_codec_probe(struct platform_device *pdev)
367 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
368 struct snd_soc_codec *codec;
371 printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION);
373 socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
374 if (socdev->card->codec == NULL)
376 codec = socdev->card->codec;
377 mutex_init(&codec->mutex);
379 codec->reg_cache = kmemdup(stac9766_reg, sizeof(stac9766_reg),
381 if (codec->reg_cache == NULL) {
385 codec->reg_cache_size = sizeof(stac9766_reg);
386 codec->reg_cache_step = 2;
388 codec->name = "STAC9766";
389 codec->owner = THIS_MODULE;
390 codec->dai = stac9766_dai;
391 codec->num_dai = ARRAY_SIZE(stac9766_dai);
392 codec->write = stac9766_ac97_write;
393 codec->read = stac9766_ac97_read;
394 codec->set_bias_level = stac9766_set_bias_level;
395 INIT_LIST_HEAD(&codec->dapm_widgets);
396 INIT_LIST_HEAD(&codec->dapm_paths);
398 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
403 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
407 /* do a cold reset for the controller and then try
408 * a warm reset followed by an optional cold reset for codec */
409 stac9766_reset(codec, 0);
410 ret = stac9766_reset(codec, 1);
412 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n");
416 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
418 snd_soc_add_controls(codec, stac9766_snd_ac97_controls,
419 ARRAY_SIZE(stac9766_snd_ac97_controls));
421 ret = snd_soc_init_card(socdev);
427 snd_soc_free_pcms(socdev);
429 snd_soc_free_ac97_codec(codec);
431 kfree(codec->private_data);
433 kfree(socdev->card->codec);
434 socdev->card->codec = NULL;
438 static int stac9766_codec_remove(struct platform_device *pdev)
440 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
441 struct snd_soc_codec *codec = socdev->card->codec;
446 snd_soc_free_pcms(socdev);
447 snd_soc_free_ac97_codec(codec);
448 kfree(codec->reg_cache);
453 struct snd_soc_codec_device soc_codec_dev_stac9766 = {
454 .probe = stac9766_codec_probe,
455 .remove = stac9766_codec_remove,
456 .suspend = stac9766_codec_suspend,
457 .resume = stac9766_codec_resume,
459 EXPORT_SYMBOL_GPL(soc_codec_dev_stac9766);
461 MODULE_DESCRIPTION("ASoC stac9766 driver");
462 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
463 MODULE_LICENSE("GPL");