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/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>
28
29 #include "stac9766.h"
30
31 #define STAC9766_VERSION "0.10"
32
33 /*
34 * STAC9766 register cache
35 */
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 */
53 };
54
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",
62 "Analog plus DAC"};
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"};
66
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);
86
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);
91
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,
96 master_tlv),
97 SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
98 SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
99 master_tlv),
100 SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
101
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),
104
105
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),
111
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),
117
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),
126
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),
132
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),
139 };
140
141 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
142 unsigned int val)
143 {
144 u16 *cache = codec->reg_cache;
145
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);
150 return 0;
151 }
152 if (reg / 2 > ARRAY_SIZE(stac9766_reg))
153 return -EIO;
154
155 soc_ac97_ops.write(codec->ac97, reg, val);
156 cache[reg / 2] = val;
157 return 0;
158 }
159
160 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
161 unsigned int reg)
162 {
163 u16 val = 0, *cache = codec->reg_cache;
164
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);
169 return val;
170 }
171 if (reg / 2 > ARRAY_SIZE(stac9766_reg))
172 return -EIO;
173
174 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
175 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
176 reg == AC97_VENDOR_ID2) {
177
178 val = soc_ac97_ops.read(codec->ac97, reg);
179 return val;
180 }
181 return cache[reg / 2];
182 }
183
184 static int ac97_analog_prepare(struct snd_pcm_substream *substream,
185 struct snd_soc_dai *dai)
186 {
187 struct snd_soc_codec *codec = dai->codec;
188 struct snd_pcm_runtime *runtime = substream->runtime;
189 unsigned short reg, vra;
190
191 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
192
193 vra |= 0x1; /* enable variable rate audio */
194
195 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
196
197 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
198 reg = AC97_PCM_FRONT_DAC_RATE;
199 else
200 reg = AC97_PCM_LR_ADC_RATE;
201
202 return stac9766_ac97_write(codec, reg, runtime->rate);
203 }
204
205 static int ac97_digital_prepare(struct snd_pcm_substream *substream,
206 struct snd_soc_dai *dai)
207 {
208 struct snd_soc_codec *codec = dai->codec;
209 struct snd_pcm_runtime *runtime = substream->runtime;
210 unsigned short reg, vra;
211
212 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
213
214 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
215 vra |= 0x5; /* Enable VRA and SPDIF out */
216
217 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
218
219 reg = AC97_PCM_FRONT_DAC_RATE;
220
221 return stac9766_ac97_write(codec, reg, runtime->rate);
222 }
223
224 static int ac97_digital_trigger(struct snd_pcm_substream *substream,
225 int cmd, struct snd_soc_dai *dai)
226 {
227 struct snd_soc_codec *codec = dai->codec;
228 unsigned short vra;
229
230 switch (cmd) {
231 case SNDRV_PCM_TRIGGER_STOP:
232 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
233 vra &= !0x04;
234 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
235 break;
236 }
237 return 0;
238 }
239
240 static int stac9766_set_bias_level(struct snd_soc_codec *codec,
241 enum snd_soc_bias_level level)
242 {
243 switch (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);
248 break;
249 case SND_SOC_BIAS_OFF: /* Off, without power */
250 /* disable everything including AC link */
251 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
252 break;
253 }
254 codec->bias_level = level;
255 return 0;
256 }
257
258 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
259 {
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])
263 return 1;
264 }
265
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])
270 return -EIO;
271 return 0;
272 }
273
274 static int stac9766_codec_suspend(struct platform_device *pdev,
275 pm_message_t state)
276 {
277 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
278 struct snd_soc_codec *codec = socdev->card->codec;
279
280 stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF);
281 return 0;
282 }
283
284 static int stac9766_codec_resume(struct platform_device *pdev)
285 {
286 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
287 struct snd_soc_codec *codec = socdev->card->codec;
288 u16 id, reset;
289
290 reset = 0;
291 /* give the codec an AC97 warm reset to start the link */
292 reset:
293 if (reset > 5) {
294 printk(KERN_ERR "stac9766 failed to resume");
295 return -EIO;
296 }
297 codec->ac97->bus->ops->warm_reset(codec->ac97);
298 id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2);
299 if (id != 0x4c13) {
300 stac9766_reset(codec, 0);
301 reset++;
302 goto reset;
303 }
304 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
305
306 if (codec->suspend_bias_level == SND_SOC_BIAS_ON)
307 stac9766_set_bias_level(codec, SND_SOC_BIAS_ON);
308
309 return 0;
310 }
311
312 static struct snd_soc_dai_ops stac9766_dai_ops_analog = {
313 .prepare = ac97_analog_prepare,
314 };
315
316 static struct snd_soc_dai_ops stac9766_dai_ops_digital = {
317 .prepare = ac97_digital_prepare,
318 .trigger = ac97_digital_trigger,
319 };
320
321 struct snd_soc_dai stac9766_dai[] = {
322 {
323 .name = "stac9766 analog",
324 .id = 0,
325 .ac97_control = 1,
326
327 /* stream cababilities */
328 .playback = {
329 .stream_name = "stac9766 analog",
330 .channels_min = 1,
331 .channels_max = 2,
332 .rates = SNDRV_PCM_RATE_8000_48000,
333 .formats = SND_SOC_STD_AC97_FMTS,
334 },
335 .capture = {
336 .stream_name = "stac9766 analog",
337 .channels_min = 1,
338 .channels_max = 2,
339 .rates = SNDRV_PCM_RATE_8000_48000,
340 .formats = SND_SOC_STD_AC97_FMTS,
341 },
342 /* alsa ops */
343 .ops = &stac9766_dai_ops_analog,
344 },
345 {
346 .name = "stac9766 IEC958",
347 .id = 1,
348 .ac97_control = 1,
349
350 /* stream cababilities */
351 .playback = {
352 .stream_name = "stac9766 IEC958",
353 .channels_min = 1,
354 .channels_max = 2,
355 .rates = SNDRV_PCM_RATE_32000 | \
356 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
357 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
358 },
359 /* alsa ops */
360 .ops = &stac9766_dai_ops_digital,
361 }
362 };
363 EXPORT_SYMBOL_GPL(stac9766_dai);
364
365 static int stac9766_codec_probe(struct platform_device *pdev)
366 {
367 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
368 struct snd_soc_codec *codec;
369 int ret = 0;
370
371 printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION);
372
373 socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
374 if (socdev->card->codec == NULL)
375 return -ENOMEM;
376 codec = socdev->card->codec;
377 mutex_init(&codec->mutex);
378
379 codec->reg_cache = kmemdup(stac9766_reg, sizeof(stac9766_reg),
380 GFP_KERNEL);
381 if (codec->reg_cache == NULL) {
382 ret = -ENOMEM;
383 goto cache_err;
384 }
385 codec->reg_cache_size = sizeof(stac9766_reg);
386 codec->reg_cache_step = 2;
387
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);
397
398 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0);
399 if (ret < 0)
400 goto codec_err;
401
402 /* register pcms */
403 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
404 if (ret < 0)
405 goto pcm_err;
406
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);
411 if (ret < 0) {
412 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n");
413 goto reset_err;
414 }
415
416 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
417
418 snd_soc_add_controls(codec, stac9766_snd_ac97_controls,
419 ARRAY_SIZE(stac9766_snd_ac97_controls));
420
421 ret = snd_soc_init_card(socdev);
422 if (ret < 0)
423 goto reset_err;
424 return 0;
425
426 reset_err:
427 snd_soc_free_pcms(socdev);
428 pcm_err:
429 snd_soc_free_ac97_codec(codec);
430 codec_err:
431 kfree(codec->private_data);
432 cache_err:
433 kfree(socdev->card->codec);
434 socdev->card->codec = NULL;
435 return ret;
436 }
437
438 static int stac9766_codec_remove(struct platform_device *pdev)
439 {
440 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
441 struct snd_soc_codec *codec = socdev->card->codec;
442
443 if (codec == NULL)
444 return 0;
445
446 snd_soc_free_pcms(socdev);
447 snd_soc_free_ac97_codec(codec);
448 kfree(codec->reg_cache);
449 kfree(codec);
450 return 0;
451 }
452
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,
458 };
459 EXPORT_SYMBOL_GPL(soc_codec_dev_stac9766);
460
461 MODULE_DESCRIPTION("ASoC stac9766 driver");
462 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
463 MODULE_LICENSE("GPL");
464
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