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", "Line", "Stereo Mix", "Mono Mix", "Phone"};
56 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
57 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
58 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
59 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
60 static const char *stac9766_record_all_mux[] = {"All analog", "Analog plus DAC"};
61 static const char *stac9766_boost1[] = {"0dB", "10dB"};
62 static const char *stac9766_boost2[] = {"0dB", "20dB"};
63 static const char *stac9766_stereo_mic[] = {"Off", "On"};
65 static const struct soc_enum stac9766_record_enum =
66 SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, stac9766_record_mux);
67 static const struct soc_enum stac9766_mono_enum =
68 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 9, 2, stac9766_mono_mux);
69 static const struct soc_enum stac9766_mic_enum =
70 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, stac9766_mic_mux);
71 static const struct soc_enum stac9766_SPDIF_enum =
72 SOC_ENUM_SINGLE(AC97_STAC_DA_CONTROL, 1, 2, stac9766_SPDIF_mux);
73 static const struct soc_enum stac9766_popbypass_enum =
74 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 15, 2, stac9766_popbypass_mux);
75 static const struct soc_enum stac9766_record_all_enum =
76 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 12, 2, stac9766_record_all_mux);
77 static const struct soc_enum stac9766_boost1_enum =
78 SOC_ENUM_SINGLE(AC97_MIC, 6, 2, stac9766_boost1); /* 0/10dB */
79 static const struct soc_enum stac9766_boost2_enum =
80 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 2, 2, stac9766_boost2); /* 0/20dB */
81 static const struct soc_enum stac9766_stereo_mic_enum =
82 SOC_ENUM_SINGLE(AC97_STAC_STEREO_MIC, 2, 1, stac9766_stereo_mic);
84 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
85 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
86 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
87 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);
89 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
90 SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
91 SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
92 SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1, master_tlv),
93 SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
94 SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1, master_tlv),
95 SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
97 SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
98 SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
101 SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
102 SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
103 SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
104 SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
105 SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
107 SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
108 SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
109 SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
110 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
111 SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
113 SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
114 SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
115 SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
116 SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
117 SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
118 SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
119 SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
120 SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
122 SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
123 SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
124 SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
125 SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
126 SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
128 SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
129 SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
130 SOC_ENUM("Record All Mux", stac9766_record_all_enum),
131 SOC_ENUM("Record Mux", stac9766_record_enum),
132 SOC_ENUM("Mono Mux", stac9766_mono_enum),
133 SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
136 int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
139 u16 *cache = codec->reg_cache;
141 if (reg > AC97_STAC_PAGE0) {
142 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
143 soc_ac97_ops.write(codec->ac97, reg, val);
144 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
147 if (reg / 2 > ARRAY_SIZE(stac9766_reg))
150 soc_ac97_ops.write(codec->ac97, reg, val);
151 cache[reg / 2] = val;
155 unsigned int stac9766_ac97_read(struct snd_soc_codec *codec, unsigned int reg)
157 u16 val = 0, *cache = codec->reg_cache;
159 if (reg > AC97_STAC_PAGE0) {
160 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
161 val = soc_ac97_ops.read(codec->ac97, reg - AC97_STAC_PAGE0);
162 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
165 if (reg / 2 > ARRAY_SIZE(stac9766_reg))
168 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
169 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
170 reg == AC97_VENDOR_ID2) {
172 val = soc_ac97_ops.read(codec->ac97, reg);
175 return cache[reg / 2];
178 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
179 struct snd_soc_dai *dai)
181 struct snd_soc_codec *codec = dai->codec;
182 struct snd_pcm_runtime *runtime = substream->runtime;
183 unsigned short reg, vra;
185 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
187 vra |= 0x1; /* enable variable rate audio */
189 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
191 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
192 reg = AC97_PCM_FRONT_DAC_RATE;
194 reg = AC97_PCM_LR_ADC_RATE;
196 return stac9766_ac97_write(codec, reg, runtime->rate);
199 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
200 struct snd_soc_dai *dai)
202 struct snd_soc_codec *codec = dai->codec;
203 struct snd_pcm_runtime *runtime = substream->runtime;
204 unsigned short reg, vra;
206 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
208 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
209 vra |= 0x5; /* Enable VRA and SPDIF out */
211 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
213 reg = AC97_PCM_FRONT_DAC_RATE;
215 return stac9766_ac97_write(codec, reg, runtime->rate);
218 static int ac97_digital_trigger(struct snd_pcm_substream *substream,
219 int cmd, struct snd_soc_dai *dai)
221 struct snd_soc_codec *codec = dai->codec;
225 case SNDRV_PCM_TRIGGER_STOP:
226 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
228 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
234 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
235 enum snd_soc_bias_level level)
238 case SND_SOC_BIAS_ON: /* full On */
239 case SND_SOC_BIAS_PREPARE: /* partial On */
240 case SND_SOC_BIAS_STANDBY: /* Off, with power */
241 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
243 case SND_SOC_BIAS_OFF: /* Off, without power */
244 /* disable everything including AC link */
245 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
248 codec->bias_level = level;
252 int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
254 if (try_warm && soc_ac97_ops.warm_reset) {
255 soc_ac97_ops.warm_reset(codec->ac97);
256 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
260 soc_ac97_ops.reset(codec->ac97);
261 if (soc_ac97_ops.warm_reset)
262 soc_ac97_ops.warm_reset(codec->ac97);
263 if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
268 static int stac9766_codec_suspend(struct platform_device *pdev,
271 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
272 struct snd_soc_codec *codec = socdev->card->codec;
274 stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF);
278 static int stac9766_codec_resume(struct platform_device *pdev)
280 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
281 struct snd_soc_codec *codec = socdev->card->codec;
285 /* give the codec an AC97 warm reset to start the link */
288 printk(KERN_ERR "stac9766 failed to resume");
291 codec->ac97->bus->ops->warm_reset(codec->ac97);
292 id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2);
294 stac9766_reset(codec, 0);
298 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
300 if (codec->suspend_bias_level == SND_SOC_BIAS_ON)
301 stac9766_set_bias_level(codec, SND_SOC_BIAS_ON);
306 static struct snd_soc_dai_ops stac9766_dai_ops_analog =
308 .prepare = ac97_analog_prepare,
311 static struct snd_soc_dai_ops stac9766_dai_ops_digital =
313 .prepare = ac97_digital_prepare,
314 .trigger = ac97_digital_trigger,
317 struct snd_soc_dai stac9766_dai[] = {
319 .name = "stac9766 analog",
323 /* stream cababilities */
325 .stream_name = "stac9766 analog",
328 .rates = SNDRV_PCM_RATE_8000_48000,
329 .formats = SND_SOC_STD_AC97_FMTS,
332 .stream_name = "stac9766 analog",
335 .rates = SNDRV_PCM_RATE_8000_48000,
336 .formats = SND_SOC_STD_AC97_FMTS,
339 .ops = &stac9766_dai_ops_analog,
342 .name = "stac9766 IEC958",
346 /* stream cababilities */
348 .stream_name = "stac9766 IEC958",
351 .rates = SNDRV_PCM_RATE_32000 | \
352 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
353 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
356 .ops = &stac9766_dai_ops_digital,
358 EXPORT_SYMBOL_GPL(stac9766_dai);
360 static int stac9766_codec_probe(struct platform_device *pdev)
362 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
363 struct snd_soc_codec *codec;
366 printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION);
368 socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
369 if (socdev->card->codec == NULL)
371 codec = socdev->card->codec;
372 mutex_init(&codec->mutex);
374 codec->reg_cache = kmemdup(stac9766_reg, sizeof(stac9766_reg), GFP_KERNEL);
375 if (codec->reg_cache == NULL) {
379 codec->reg_cache_size = sizeof(stac9766_reg);
380 codec->reg_cache_step = 2;
382 codec->name = "STAC9766";
383 codec->owner = THIS_MODULE;
384 codec->dai = stac9766_dai;
385 codec->num_dai = ARRAY_SIZE(stac9766_dai);
386 codec->write = stac9766_ac97_write;
387 codec->read = stac9766_ac97_read;
388 codec->set_bias_level = stac9766_set_bias_level;
389 INIT_LIST_HEAD(&codec->dapm_widgets);
390 INIT_LIST_HEAD(&codec->dapm_paths);
392 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
397 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
401 /* do a cold reset for the controller and then try
402 * a warm reset followed by an optional cold reset for codec */
403 stac9766_reset(codec, 0);
404 ret = stac9766_reset(codec, 1);
406 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n");
410 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
412 snd_soc_add_controls(codec, stac9766_snd_ac97_controls, ARRAY_SIZE(
413 stac9766_snd_ac97_controls));
415 ret = snd_soc_init_card(socdev);
421 snd_soc_free_pcms(socdev);
423 snd_soc_free_ac97_codec(codec);
425 kfree(codec->private_data);
427 kfree(socdev->card->codec);
428 socdev->card->codec = NULL;
432 static int stac9766_codec_remove(struct platform_device *pdev)
434 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
435 struct snd_soc_codec *codec = socdev->card->codec;
440 snd_soc_free_pcms(socdev);
441 snd_soc_free_ac97_codec(codec);
442 kfree(codec->reg_cache);
447 struct snd_soc_codec_device soc_codec_dev_stac9766 =
449 .probe = stac9766_codec_probe,
450 .remove = stac9766_codec_remove,
451 .suspend = stac9766_codec_suspend,
452 .resume = stac9766_codec_resume,
454 EXPORT_SYMBOL_GPL(soc_codec_dev_stac9766);
456 static int __init stac9766_modinit(void)
458 return snd_soc_register_dais(stac9766_dai, ARRAY_SIZE(stac9766_dai));
460 module_init(stac9766_modinit);
462 static void __exit stac9766_exit(void)
464 snd_soc_unregister_dais(stac9766_dai, ARRAY_SIZE(stac9766_dai));
466 module_exit(stac9766_exit);
468 MODULE_DESCRIPTION("ASoC stac9766 driver");
469 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
470 MODULE_LICENSE("GPL");