2 * ac97_codec.c: Generic AC97 mixer/modem module
4 * Derived from ac97 mixer in maestro and trident driver.
6 * Copyright 2000 Silicon Integrated System Corporation
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 **************************************************************************
24 * The Intel Audio Codec '97 specification is available at the Intel
25 * audio homepage: http://developer.intel.com/ial/scalableplatforms/audio/
27 * The specification itself is currently available at:
28 * ftp://download.intel.com/ial/scalableplatforms/ac97r22.pdf
30 **************************************************************************
33 * May 02, 2003 Liam Girdwood <liam.girdwood@wolfsonmicro.com>
34 * Removed non existant WM9700
35 * Added support for WM9705, WM9708, WM9709, WM9710, WM9711
37 * Mar 28, 2002 Randolph Bentson <bentson@holmsjoen.com>
38 * corrections to support WM9707 in ViewPad 1000
39 * v0.4 Mar 15 2000 Ollie Lho
40 * dual codecs support verified with 4 channels output
41 * v0.3 Feb 22 2000 Ollie Lho
42 * bug fix for record mask setting
43 * v0.2 Feb 10 2000 Ollie Lho
44 * add ac97_read_proc for /proc/driver/{vendor}/ac97
45 * v0.1 Jan 14 2000 Ollie Lho <ollie@sis.com.tw>
46 * Isolated from trident.c to support multiple ac97 codec
48 #include <linux/module.h>
49 #include <linux/kernel.h>
50 #include <linux/slab.h>
51 #include <linux/string.h>
52 #include <linux/errno.h>
53 #include <linux/bitops.h>
54 #include <linux/delay.h>
55 #include <linux/pci.h>
56 #include <linux/ac97_codec.h>
57 #include <asm/uaccess.h>
59 #define CODEC_ID_BUFSZ 14
61 static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel);
62 static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel,
63 unsigned int left, unsigned int right);
64 static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val );
65 static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask);
66 static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg);
68 static int ac97_init_mixer(struct ac97_codec *codec);
70 static int wolfson_init03(struct ac97_codec * codec);
71 static int wolfson_init04(struct ac97_codec * codec);
72 static int wolfson_init05(struct ac97_codec * codec);
73 static int wolfson_init11(struct ac97_codec * codec);
74 static int tritech_init(struct ac97_codec * codec);
75 static int tritech_maestro_init(struct ac97_codec * codec);
76 static int sigmatel_9708_init(struct ac97_codec *codec);
77 static int sigmatel_9721_init(struct ac97_codec *codec);
78 static int sigmatel_9744_init(struct ac97_codec *codec);
79 static int ad1886_init(struct ac97_codec *codec);
80 static int eapd_control(struct ac97_codec *codec, int);
81 static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
82 static int cmedia_init(struct ac97_codec * codec);
83 static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
84 static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
90 * If you are adding a codec then you should be able to use
91 * eapd_ops - any codec that supports EAPD amp control (most)
92 * null_ops - any ancient codec that supports nothing
94 * The three functions are
95 * init - used for non AC97 standard initialisation
96 * amplifier - used to do amplifier control (1=on 0=off)
97 * digital - switch to digital modes (0 = analog)
99 * Not all codecs support all features, not all drivers use all the
103 static struct ac97_ops null_ops = { NULL, NULL, NULL };
104 static struct ac97_ops default_ops = { NULL, eapd_control, NULL };
105 static struct ac97_ops default_digital_ops = { NULL, eapd_control, generic_digital_control};
106 static struct ac97_ops wolfson_ops03 = { wolfson_init03, NULL, NULL };
107 static struct ac97_ops wolfson_ops04 = { wolfson_init04, NULL, NULL };
108 static struct ac97_ops wolfson_ops05 = { wolfson_init05, NULL, NULL };
109 static struct ac97_ops wolfson_ops11 = { wolfson_init11, NULL, NULL };
110 static struct ac97_ops tritech_ops = { tritech_init, NULL, NULL };
111 static struct ac97_ops tritech_m_ops = { tritech_maestro_init, NULL, NULL };
112 static struct ac97_ops sigmatel_9708_ops = { sigmatel_9708_init, NULL, NULL };
113 static struct ac97_ops sigmatel_9721_ops = { sigmatel_9721_init, NULL, NULL };
114 static struct ac97_ops sigmatel_9744_ops = { sigmatel_9744_init, NULL, NULL };
115 static struct ac97_ops crystal_digital_ops = { NULL, eapd_control, crystal_digital_control };
116 static struct ac97_ops ad1886_ops = { ad1886_init, eapd_control, NULL };
117 static struct ac97_ops cmedia_ops = { NULL, eapd_control, NULL};
118 static struct ac97_ops cmedia_digital_ops = { cmedia_init, eapd_control, cmedia_digital_control};
120 /* sorted by vendor/device id */
121 static const struct {
124 struct ac97_ops *ops;
126 } ac97_codec_ids[] = {
127 {0x41445303, "Analog Devices AD1819", &null_ops},
128 {0x41445340, "Analog Devices AD1881", &null_ops},
129 {0x41445348, "Analog Devices AD1881A", &null_ops},
130 {0x41445360, "Analog Devices AD1885", &default_ops},
131 {0x41445361, "Analog Devices AD1886", &ad1886_ops},
132 {0x41445370, "Analog Devices AD1981", &null_ops},
133 {0x41445372, "Analog Devices AD1981A", &null_ops},
134 {0x41445374, "Analog Devices AD1981B", &null_ops},
135 {0x41445460, "Analog Devices AD1885", &default_ops},
136 {0x41445461, "Analog Devices AD1886", &ad1886_ops},
137 {0x414B4D00, "Asahi Kasei AK4540", &null_ops},
138 {0x414B4D01, "Asahi Kasei AK4542", &null_ops},
139 {0x414B4D02, "Asahi Kasei AK4543", &null_ops},
140 {0x414C4326, "ALC100P", &null_ops},
141 {0x414C4710, "ALC200/200P", &null_ops},
142 {0x414C4720, "ALC650", &default_digital_ops},
143 {0x434D4941, "CMedia", &cmedia_ops, AC97_NO_PCM_VOLUME },
144 {0x434D4942, "CMedia", &cmedia_ops, AC97_NO_PCM_VOLUME },
145 {0x434D4961, "CMedia", &cmedia_digital_ops, AC97_NO_PCM_VOLUME },
146 {0x43525900, "Cirrus Logic CS4297", &default_ops},
147 {0x43525903, "Cirrus Logic CS4297", &default_ops},
148 {0x43525913, "Cirrus Logic CS4297A rev A", &default_ops},
149 {0x43525914, "Cirrus Logic CS4297A rev B", &default_ops},
150 {0x43525923, "Cirrus Logic CS4298", &null_ops},
151 {0x4352592B, "Cirrus Logic CS4294", &null_ops},
152 {0x4352592D, "Cirrus Logic CS4294", &null_ops},
153 {0x43525931, "Cirrus Logic CS4299 rev A", &crystal_digital_ops},
154 {0x43525933, "Cirrus Logic CS4299 rev C", &crystal_digital_ops},
155 {0x43525934, "Cirrus Logic CS4299 rev D", &crystal_digital_ops},
156 {0x43585442, "CXT66", &default_ops, AC97_DELUDED_MODEM },
157 {0x44543031, "Diamond Technology DT0893", &default_ops},
158 {0x45838308, "ESS Allegro ES1988", &null_ops},
159 {0x49434511, "ICE1232", &null_ops}, /* I hope --jk */
160 {0x4e534331, "National Semiconductor LM4549", &null_ops},
161 {0x53494c22, "Silicon Laboratory Si3036", &null_ops},
162 {0x53494c23, "Silicon Laboratory Si3038", &null_ops},
163 {0x545200FF, "TriTech TR?????", &tritech_m_ops},
164 {0x54524102, "TriTech TR28022", &null_ops},
165 {0x54524103, "TriTech TR28023", &null_ops},
166 {0x54524106, "TriTech TR28026", &null_ops},
167 {0x54524108, "TriTech TR28028", &tritech_ops},
168 {0x54524123, "TriTech TR A5", &null_ops},
169 {0x574D4C03, "Wolfson WM9703/07/08/17", &wolfson_ops03},
170 {0x574D4C04, "Wolfson WM9704M/WM9704Q", &wolfson_ops04},
171 {0x574D4C05, "Wolfson WM9705/WM9710", &wolfson_ops05},
172 {0x574D4C09, "Wolfson WM9709", &null_ops},
173 {0x574D4C12, "Wolfson WM9711/9712", &wolfson_ops11},
174 {0x83847600, "SigmaTel STAC????", &null_ops},
175 {0x83847604, "SigmaTel STAC9701/3/4/5", &null_ops},
176 {0x83847605, "SigmaTel STAC9704", &null_ops},
177 {0x83847608, "SigmaTel STAC9708", &sigmatel_9708_ops},
178 {0x83847609, "SigmaTel STAC9721/23", &sigmatel_9721_ops},
179 {0x83847644, "SigmaTel STAC9744/45", &sigmatel_9744_ops},
180 {0x83847652, "SigmaTel STAC9752/53", &default_ops},
181 {0x83847656, "SigmaTel STAC9756/57", &sigmatel_9744_ops},
182 {0x83847666, "SigmaTel STAC9750T", &sigmatel_9744_ops},
183 {0x83847684, "SigmaTel STAC9783/84?", &null_ops},
184 {0x57454301, "Winbond 83971D", &null_ops},
187 static const char *ac97_stereo_enhancements[] =
189 /* 0 */ "No 3D Stereo Enhancement",
190 /* 1 */ "Analog Devices Phat Stereo",
191 /* 2 */ "Creative Stereo Enhancement",
192 /* 3 */ "National Semi 3D Stereo Enhancement",
193 /* 4 */ "YAMAHA Ymersion",
194 /* 5 */ "BBE 3D Stereo Enhancement",
195 /* 6 */ "Crystal Semi 3D Stereo Enhancement",
196 /* 7 */ "Qsound QXpander",
197 /* 8 */ "Spatializer 3D Stereo Enhancement",
198 /* 9 */ "SRS 3D Stereo Enhancement",
199 /* 10 */ "Platform Tech 3D Stereo Enhancement",
200 /* 11 */ "AKM 3D Audio",
201 /* 12 */ "Aureal Stereo Enhancement",
202 /* 13 */ "Aztech 3D Enhancement",
203 /* 14 */ "Binaura 3D Audio Enhancement",
204 /* 15 */ "ESS Technology Stereo Enhancement",
205 /* 16 */ "Harman International VMAx",
206 /* 17 */ "Nvidea 3D Stereo Enhancement",
207 /* 18 */ "Philips Incredible Sound",
208 /* 19 */ "Texas Instruments 3D Stereo Enhancement",
209 /* 20 */ "VLSI Technology 3D Stereo Enhancement",
210 /* 21 */ "TriTech 3D Stereo Enhancement",
211 /* 22 */ "Realtek 3D Stereo Enhancement",
212 /* 23 */ "Samsung 3D Stereo Enhancement",
213 /* 24 */ "Wolfson Microelectronics 3D Enhancement",
214 /* 25 */ "Delta Integration 3D Enhancement",
215 /* 26 */ "SigmaTel 3D Enhancement",
216 /* 27 */ "Winbond 3D Stereo Enhancement",
217 /* 28 */ "Rockwell 3D Stereo Enhancement",
218 /* 29 */ "Reserved 29",
219 /* 30 */ "Reserved 30",
220 /* 31 */ "Reserved 31"
223 /* this table has default mixer values for all OSS mixers. */
224 static struct mixer_defaults {
227 } mixer_defaults[SOUND_MIXER_NRDEVICES] = {
228 /* all values 0 -> 100 in bytes */
229 {SOUND_MIXER_VOLUME, 0x4343},
230 {SOUND_MIXER_BASS, 0x4343},
231 {SOUND_MIXER_TREBLE, 0x4343},
232 {SOUND_MIXER_PCM, 0x4343},
233 {SOUND_MIXER_SPEAKER, 0x4343},
234 {SOUND_MIXER_LINE, 0x4343},
235 {SOUND_MIXER_MIC, 0x0000},
236 {SOUND_MIXER_CD, 0x4343},
237 {SOUND_MIXER_ALTPCM, 0x4343},
238 {SOUND_MIXER_IGAIN, 0x4343},
239 {SOUND_MIXER_LINE1, 0x4343},
240 {SOUND_MIXER_PHONEIN, 0x4343},
241 {SOUND_MIXER_PHONEOUT, 0x4343},
242 {SOUND_MIXER_VIDEO, 0x4343},
246 /* table to scale scale from OSS mixer value to AC97 mixer register value */
247 static struct ac97_mixer_hw {
248 unsigned char offset;
250 } ac97_hw[SOUND_MIXER_NRDEVICES]= {
251 [SOUND_MIXER_VOLUME] = {AC97_MASTER_VOL_STEREO,64},
252 [SOUND_MIXER_BASS] = {AC97_MASTER_TONE, 16},
253 [SOUND_MIXER_TREBLE] = {AC97_MASTER_TONE, 16},
254 [SOUND_MIXER_PCM] = {AC97_PCMOUT_VOL, 32},
255 [SOUND_MIXER_SPEAKER] = {AC97_PCBEEP_VOL, 16},
256 [SOUND_MIXER_LINE] = {AC97_LINEIN_VOL, 32},
257 [SOUND_MIXER_MIC] = {AC97_MIC_VOL, 32},
258 [SOUND_MIXER_CD] = {AC97_CD_VOL, 32},
259 [SOUND_MIXER_ALTPCM] = {AC97_HEADPHONE_VOL, 64},
260 [SOUND_MIXER_IGAIN] = {AC97_RECORD_GAIN, 16},
261 [SOUND_MIXER_LINE1] = {AC97_AUX_VOL, 32},
262 [SOUND_MIXER_PHONEIN] = {AC97_PHONE_VOL, 32},
263 [SOUND_MIXER_PHONEOUT] = {AC97_MASTER_VOL_MONO, 64},
264 [SOUND_MIXER_VIDEO] = {AC97_VIDEO_VOL, 32},
267 /* the following tables allow us to go from OSS <-> ac97 quickly. */
268 enum ac97_recsettings {
274 AC97_REC_STEREO, /* combination of all enabled outputs.. */
275 AC97_REC_MONO, /*.. or the mono equivalent */
279 static const unsigned int ac97_rm2oss[] = {
280 [AC97_REC_MIC] = SOUND_MIXER_MIC,
281 [AC97_REC_CD] = SOUND_MIXER_CD,
282 [AC97_REC_VIDEO] = SOUND_MIXER_VIDEO,
283 [AC97_REC_AUX] = SOUND_MIXER_LINE1,
284 [AC97_REC_LINE] = SOUND_MIXER_LINE,
285 [AC97_REC_STEREO]= SOUND_MIXER_IGAIN,
286 [AC97_REC_PHONE] = SOUND_MIXER_PHONEIN
289 /* indexed by bit position */
290 static const unsigned int ac97_oss_rm[] = {
291 [SOUND_MIXER_MIC] = AC97_REC_MIC,
292 [SOUND_MIXER_CD] = AC97_REC_CD,
293 [SOUND_MIXER_VIDEO] = AC97_REC_VIDEO,
294 [SOUND_MIXER_LINE1] = AC97_REC_AUX,
295 [SOUND_MIXER_LINE] = AC97_REC_LINE,
296 [SOUND_MIXER_IGAIN] = AC97_REC_STEREO,
297 [SOUND_MIXER_PHONEIN] = AC97_REC_PHONE
300 static LIST_HEAD(codecs);
301 static LIST_HEAD(codec_drivers);
302 static DECLARE_MUTEX(codec_sem);
304 /* reads the given OSS mixer from the ac97 the caller must have insured that the ac97 knows
305 about that given mixer, and should be holding a spinlock for the card */
306 static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel)
311 struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
313 val = codec->codec_read(codec , mh->offset);
315 if (val & AC97_MUTE) {
317 } else if (AC97_STEREO_MASK & (1 << oss_channel)) {
318 /* nice stereo mixers .. */
321 left = (val >> 8) & 0x7f;
324 if (oss_channel == SOUND_MIXER_IGAIN) {
325 right = (right * 100) / mh->scale;
326 left = (left * 100) / mh->scale;
328 /* these may have 5 or 6 bit resolution */
329 if(oss_channel == SOUND_MIXER_VOLUME || oss_channel == SOUND_MIXER_ALTPCM)
330 scale = (1 << codec->bit_resolution);
334 right = 100 - ((right * 100) / scale);
335 left = 100 - ((left * 100) / scale);
337 ret = left | (right << 8);
338 } else if (oss_channel == SOUND_MIXER_SPEAKER) {
339 ret = 100 - ((((val & 0x1e)>>1) * 100) / mh->scale);
340 } else if (oss_channel == SOUND_MIXER_PHONEIN) {
341 ret = 100 - (((val & 0x1f) * 100) / mh->scale);
342 } else if (oss_channel == SOUND_MIXER_PHONEOUT) {
343 scale = (1 << codec->bit_resolution);
344 ret = 100 - (((val & 0x1f) * 100) / scale);
345 } else if (oss_channel == SOUND_MIXER_MIC) {
346 ret = 100 - (((val & 0x1f) * 100) / mh->scale);
347 /* the low bit is optional in the tone sliders and masking
348 it lets us avoid the 0xf 'bypass'.. */
349 } else if (oss_channel == SOUND_MIXER_BASS) {
350 ret = 100 - ((((val >> 8) & 0xe) * 100) / mh->scale);
351 } else if (oss_channel == SOUND_MIXER_TREBLE) {
352 ret = 100 - (((val & 0xe) * 100) / mh->scale);
356 printk("ac97_codec: read OSS mixer %2d (%s ac97 register 0x%02x), "
357 "0x%04x -> 0x%04x\n",
358 oss_channel, codec->id ? "Secondary" : "Primary",
359 mh->offset, val, ret);
365 /* write the OSS encoded volume to the given OSS encoded mixer, again caller's job to
366 make sure all is well in arg land, call with spinlock held */
367 static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel,
368 unsigned int left, unsigned int right)
372 struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
375 printk("ac97_codec: wrote OSS mixer %2d (%s ac97 register 0x%02x), "
376 "left vol:%2d, right vol:%2d:",
377 oss_channel, codec->id ? "Secondary" : "Primary",
378 mh->offset, left, right);
381 if (AC97_STEREO_MASK & (1 << oss_channel)) {
383 if (left == 0 && right == 0) {
386 if (oss_channel == SOUND_MIXER_IGAIN) {
387 right = (right * mh->scale) / 100;
388 left = (left * mh->scale) / 100;
389 if (right >= mh->scale)
391 if (left >= mh->scale)
394 /* these may have 5 or 6 bit resolution */
395 if (oss_channel == SOUND_MIXER_VOLUME ||
396 oss_channel == SOUND_MIXER_ALTPCM)
397 scale = (1 << codec->bit_resolution);
401 right = ((100 - right) * scale) / 100;
402 left = ((100 - left) * scale) / 100;
408 val = (left << 8) | right;
410 } else if (oss_channel == SOUND_MIXER_BASS) {
411 val = codec->codec_read(codec , mh->offset) & ~0x0f00;
412 left = ((100 - left) * mh->scale) / 100;
413 if (left >= mh->scale)
415 val |= (left << 8) & 0x0e00;
416 } else if (oss_channel == SOUND_MIXER_TREBLE) {
417 val = codec->codec_read(codec , mh->offset) & ~0x000f;
418 left = ((100 - left) * mh->scale) / 100;
419 if (left >= mh->scale)
421 val |= left & 0x000e;
422 } else if(left == 0) {
424 } else if (oss_channel == SOUND_MIXER_SPEAKER) {
425 left = ((100 - left) * mh->scale) / 100;
426 if (left >= mh->scale)
429 } else if (oss_channel == SOUND_MIXER_PHONEIN) {
430 left = ((100 - left) * mh->scale) / 100;
431 if (left >= mh->scale)
434 } else if (oss_channel == SOUND_MIXER_PHONEOUT) {
435 scale = (1 << codec->bit_resolution);
436 left = ((100 - left) * scale) / 100;
437 if (left >= mh->scale)
440 } else if (oss_channel == SOUND_MIXER_MIC) {
441 val = codec->codec_read(codec , mh->offset) & ~0x801f;
442 left = ((100 - left) * mh->scale) / 100;
443 if (left >= mh->scale)
446 /* the low bit is optional in the tone sliders and masking
447 it lets us avoid the 0xf 'bypass'.. */
450 printk(" 0x%04x", val);
453 codec->codec_write(codec, mh->offset, val);
456 val = codec->codec_read(codec, mh->offset);
457 printk(" -> 0x%04x\n", val);
461 /* a thin wrapper for write_mixer */
462 static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val )
464 unsigned int left,right;
466 /* cleanse input a little */
467 right = ((val >> 8) & 0xff) ;
468 left = (val & 0xff) ;
470 if (right > 100) right = 100;
471 if (left > 100) left = 100;
473 codec->mixer_state[oss_mixer] = (right << 8) | left;
474 codec->write_mixer(codec, oss_mixer, left, right);
477 /* read or write the recmask, the ac97 can really have left and right recording
478 inputs independantly set, but OSS doesn't seem to want us to express that to
479 the user. the caller guarantees that we have a supported bit set, and they
480 must be holding the card's spinlock */
481 static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask)
486 /* read it from the card */
487 val = codec->codec_read(codec, AC97_RECORD_SELECT);
489 printk("ac97_codec: ac97 recmask to set to 0x%04x\n", val);
491 return (1 << ac97_rm2oss[val & 0x07]);
494 /* else, write the first set in the mask as the
496 /* clear out current set value first (AC97 supports only 1 input!) */
497 val = (1 << ac97_rm2oss[codec->codec_read(codec, AC97_RECORD_SELECT) & 0x07]);
502 val = ac97_oss_rm[val-1];
503 val |= val << 8; /* set both channels */
506 printk("ac97_codec: setting ac97 recmask to 0x%04x\n", val);
509 codec->codec_write(codec, AC97_RECORD_SELECT, val);
514 static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg)
518 if (cmd == SOUND_MIXER_INFO) {
520 memset(&info, 0, sizeof(info));
521 strlcpy(info.id, codec->name, sizeof(info.id));
522 strlcpy(info.name, codec->name, sizeof(info.name));
523 info.modify_counter = codec->modcnt;
524 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
528 if (cmd == SOUND_OLD_MIXER_INFO) {
529 _old_mixer_info info;
530 memset(&info, 0, sizeof(info));
531 strlcpy(info.id, codec->name, sizeof(info.id));
532 strlcpy(info.name, codec->name, sizeof(info.name));
533 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
538 if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
541 if (cmd == OSS_GETVERSION)
542 return put_user(SOUND_VERSION, (int __user *)arg);
544 if (_SIOC_DIR(cmd) == _SIOC_READ) {
545 switch (_IOC_NR(cmd)) {
546 case SOUND_MIXER_RECSRC: /* give them the current record source */
547 if (!codec->recmask_io) {
550 val = codec->recmask_io(codec, 1, 0);
554 case SOUND_MIXER_DEVMASK: /* give them the supported mixers */
555 val = codec->supported_mixers;
558 case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
559 val = codec->record_sources;
562 case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
563 val = codec->stereo_mixers;
566 case SOUND_MIXER_CAPS:
567 val = SOUND_CAP_EXCL_INPUT;
570 default: /* read a specific mixer */
573 if (!supported_mixer(codec, i))
576 /* do we ever want to touch the hardware? */
577 /* val = codec->read_mixer(codec, i); */
578 val = codec->mixer_state[i];
581 return put_user(val, (int __user *)arg);
584 if (_SIOC_DIR(cmd) == (_SIOC_WRITE|_SIOC_READ)) {
586 if (get_user(val, (int __user *)arg))
589 switch (_IOC_NR(cmd)) {
590 case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
591 if (!codec->recmask_io) return -EINVAL;
593 if (!(val &= codec->record_sources)) return -EINVAL;
595 codec->recmask_io(codec, 0, val);
598 default: /* write a specific mixer */
601 if (!supported_mixer(codec, i))
604 ac97_set_mixer(codec, i, val);
612 /* entry point for /proc/driver/controller_vendor/ac97/%d */
613 int ac97_read_proc (char *page, char **start, off_t off,
614 int count, int *eof, void *data)
616 int len = 0, cap, extid, val, id1, id2;
617 struct ac97_codec *codec;
620 if ((codec = data) == NULL)
623 id1 = codec->codec_read(codec, AC97_VENDOR_ID1);
624 id2 = codec->codec_read(codec, AC97_VENDOR_ID2);
625 len += sprintf (page+len, "Vendor name : %s\n", codec->name);
626 len += sprintf (page+len, "Vendor id : %04X %04X\n", id1, id2);
628 extid = codec->codec_read(codec, AC97_EXTENDED_ID);
629 extid &= ~((1<<2)|(1<<4)|(1<<5)|(1<<10)|(1<<11)|(1<<12)|(1<<13));
630 len += sprintf (page+len, "AC97 Version : %s\n",
631 extid ? "2.0 or later" : "1.0");
632 if (extid) is_ac97_20 = 1;
634 cap = codec->codec_read(codec, AC97_RESET);
635 len += sprintf (page+len, "Capabilities :%s%s%s%s%s%s\n",
636 cap & 0x0001 ? " -dedicated MIC PCM IN channel-" : "",
637 cap & 0x0002 ? " -reserved1-" : "",
638 cap & 0x0004 ? " -bass & treble-" : "",
639 cap & 0x0008 ? " -simulated stereo-" : "",
640 cap & 0x0010 ? " -headphone out-" : "",
641 cap & 0x0020 ? " -loudness-" : "");
643 len += sprintf (page+len, "DAC resolutions :%s%s%s\n",
645 val & 0x0040 ? " -18-bit-" : "",
646 val & 0x0080 ? " -20-bit-" : "");
648 len += sprintf (page+len, "ADC resolutions :%s%s%s\n",
650 val & 0x0100 ? " -18-bit-" : "",
651 val & 0x0200 ? " -20-bit-" : "");
652 len += sprintf (page+len, "3D enhancement : %s\n",
653 ac97_stereo_enhancements[(cap >> 10) & 0x1f]);
655 val = codec->codec_read(codec, AC97_GENERAL_PURPOSE);
656 len += sprintf (page+len, "POP path : %s 3D\n"
658 "3D enhancement : %s\n"
662 "ADC/DAC loopback : %s\n",
663 val & 0x8000 ? "post" : "pre",
664 val & 0x4000 ? "on" : "off",
665 val & 0x2000 ? "on" : "off",
666 val & 0x1000 ? "on" : "off",
667 val & 0x0200 ? "MIC" : "MIX",
668 val & 0x0100 ? "MIC2" : "MIC1",
669 val & 0x0080 ? "on" : "off");
671 extid = codec->codec_read(codec, AC97_EXTENDED_ID);
673 len += sprintf (page+len, "Ext Capabilities :%s%s%s%s%s%s%s\n",
674 cap & 0x0001 ? " -var rate PCM audio-" : "",
675 cap & 0x0002 ? " -2x PCM audio out-" : "",
676 cap & 0x0008 ? " -var rate MIC in-" : "",
677 cap & 0x0040 ? " -PCM center DAC-" : "",
678 cap & 0x0080 ? " -PCM surround DAC-" : "",
679 cap & 0x0100 ? " -PCM LFE DAC-" : "",
680 cap & 0x0200 ? " -slot/DAC mappings-" : "");
682 len += sprintf (page+len, "Front DAC rate : %d\n",
683 codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE));
690 * codec_id - Turn id1/id2 into a PnP string
693 * @buf: CODEC_ID_BUFSZ byte buffer
695 * Fills buf with a zero terminated PnP ident string for the id1/id2
696 * pair. For convenience the return is the passed in buffer pointer.
699 static char *codec_id(u16 id1, u16 id2, char *buf)
702 snprintf(buf, CODEC_ID_BUFSZ, "0x%04x:0x%04x", id1, id2);
705 buf[1] = (id1 & 0xFF);
707 snprintf(buf+3, CODEC_ID_BUFSZ - 3, "%d", id2&0xFF);
713 * ac97_check_modem - Check if the Codec is a modem
714 * @codec: codec to check
716 * Return true if the device is an AC97 1.0 or AC97 2.0 modem
719 static int ac97_check_modem(struct ac97_codec *codec)
721 /* Check for an AC97 1.0 soft modem (ID1) */
722 if(codec->codec_read(codec, AC97_RESET) & 2)
724 /* Check for an AC97 2.x soft modem */
725 codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0L);
726 if(codec->codec_read(codec, AC97_EXTENDED_MODEM_ID) & 1)
733 * ac97_alloc_codec - Allocate an AC97 codec
735 * Returns a new AC97 codec structure. AC97 codecs may become
736 * refcounted soon so this interface is needed. Returns with
737 * one reference taken.
740 struct ac97_codec *ac97_alloc_codec(void)
742 struct ac97_codec *codec = kmalloc(sizeof(struct ac97_codec), GFP_KERNEL);
746 memset(codec, 0, sizeof(*codec));
747 spin_lock_init(&codec->lock);
748 INIT_LIST_HEAD(&codec->list);
752 EXPORT_SYMBOL(ac97_alloc_codec);
755 * ac97_release_codec - Release an AC97 codec
756 * @codec: codec to release
758 * Release an allocated AC97 codec. This will be refcounted in
759 * time but for the moment is trivial. Calls the unregister
760 * handler if the codec is now defunct.
763 void ac97_release_codec(struct ac97_codec *codec)
765 /* Remove from the list first, we don't want to be
768 list_del(&codec->list);
771 * The driver needs to deal with internal
772 * locking to avoid accidents here.
775 codec->driver->remove(codec, codec->driver);
779 EXPORT_SYMBOL(ac97_release_codec);
782 * ac97_probe_codec - Initialize and setup AC97-compatible codec
783 * @codec: (in/out) Kernel info for a single AC97 codec
785 * Reset the AC97 codec, then initialize the mixer and
786 * the rest of the @codec structure.
788 * The codec_read and codec_write fields of @codec are
789 * required to be setup and working when this function
790 * is called. All other fields are set by this function.
792 * codec_wait field of @codec can optionally be provided
793 * when calling this function. If codec_wait is not %NULL,
794 * this function will call codec_wait any time it is
795 * necessary to wait for the audio chip to reach the
796 * codec-ready state. If codec_wait is %NULL, then
797 * the default behavior is to call schedule_timeout.
798 * Currently codec_wait is used to wait for AC97 codec
801 * Returns 1 (true) on success, or 0 (false) on failure.
804 int ac97_probe_codec(struct ac97_codec *codec)
809 char cidbuf[CODEC_ID_BUFSZ];
812 struct ac97_driver *d;
814 /* probing AC97 codec, AC97 2.0 says that bit 15 of register 0x00 (reset) should
817 * FIXME: is the following comment outdated? -jgarzik
818 * Probing of AC97 in this way is not reliable, it is not even SAFE !!
820 codec->codec_write(codec, AC97_RESET, 0L);
822 /* also according to spec, we wait for codec-ready state */
823 if (codec->codec_wait)
824 codec->codec_wait(codec);
828 if ((audio = codec->codec_read(codec, AC97_RESET)) & 0x8000) {
829 printk(KERN_ERR "ac97_codec: %s ac97 codec not present\n",
830 (codec->id & 0x2) ? (codec->id&1 ? "4th" : "Tertiary")
831 : (codec->id&1 ? "Secondary": "Primary"));
835 /* probe for Modem Codec */
836 codec->modem = ac97_check_modem(codec);
838 codec->codec_ops = &default_ops;
840 id1 = codec->codec_read(codec, AC97_VENDOR_ID1);
841 id2 = codec->codec_read(codec, AC97_VENDOR_ID2);
842 for (i = 0; i < ARRAY_SIZE(ac97_codec_ids); i++) {
843 if (ac97_codec_ids[i].id == ((id1 << 16) | id2)) {
844 codec->type = ac97_codec_ids[i].id;
845 codec->name = ac97_codec_ids[i].name;
846 codec->codec_ops = ac97_codec_ids[i].ops;
847 codec->flags = ac97_codec_ids[i].flags;
852 codec->model = (id1 << 16) | id2;
854 f = codec->codec_read(codec, AC97_EXTENDED_STATUS);
856 codec->codec_ops = &default_digital_ops;
858 /* A device which thinks its a modem but isnt */
859 if(codec->flags & AC97_DELUDED_MODEM)
862 if (codec->name == NULL)
863 codec->name = "Unknown";
864 printk(KERN_INFO "ac97_codec: AC97 %s codec, id: %s (%s)\n",
865 codec->modem ? "Modem" : (audio ? "Audio" : ""),
866 codec_id(id1, id2, cidbuf), codec->name);
868 if(!ac97_init_mixer(codec))
872 * Attach last so the caller can override the mixer
877 list_add(&codec->list, &codecs);
879 list_for_each(l, &codec_drivers) {
880 d = list_entry(l, struct ac97_driver, list);
881 if ((codec->model ^ d->codec_id) & d->codec_mask)
883 if(d->probe(codec, d) == 0)
894 static int ac97_init_mixer(struct ac97_codec *codec)
899 cap = codec->codec_read(codec, AC97_RESET);
902 codec->supported_mixers = AC97_SUPPORTED_MASK;
903 codec->stereo_mixers = AC97_STEREO_MASK;
904 codec->record_sources = AC97_RECORD_MASK;
906 codec->supported_mixers &= ~(SOUND_MASK_BASS|SOUND_MASK_TREBLE);
908 codec->supported_mixers &= ~SOUND_MASK_ALTPCM;
911 /* detect bit resolution */
912 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, 0x2020);
913 if(codec->codec_read(codec, AC97_MASTER_VOL_STEREO) == 0x2020)
914 codec->bit_resolution = 6;
916 codec->bit_resolution = 5;
918 /* generic OSS to AC97 wrapper */
919 codec->read_mixer = ac97_read_mixer;
920 codec->write_mixer = ac97_write_mixer;
921 codec->recmask_io = ac97_recmask_io;
922 codec->mixer_ioctl = ac97_mixer_ioctl;
924 /* codec specific initialization for 4-6 channel output or secondary codec stuff */
925 if (codec->codec_ops->init != NULL) {
926 codec->codec_ops->init(codec);
929 /* initialize mixer channel volumes */
930 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
931 struct mixer_defaults *md = &mixer_defaults[i];
934 if (!supported_mixer(codec, md->mixer))
936 ac97_set_mixer(codec, md->mixer, md->value);
940 * Volume is MUTE only on this device. We have to initialise
941 * it but its useless beyond that.
943 if(codec->flags & AC97_NO_PCM_VOLUME)
945 codec->supported_mixers &= ~SOUND_MASK_PCM;
946 printk(KERN_WARNING "AC97 codec does not have proper volume support.\n");
951 #define AC97_SIGMATEL_ANALOG 0x6c /* Analog Special */
952 #define AC97_SIGMATEL_DAC2INVERT 0x6e
953 #define AC97_SIGMATEL_BIAS1 0x70
954 #define AC97_SIGMATEL_BIAS2 0x72
955 #define AC97_SIGMATEL_MULTICHN 0x74 /* Multi-Channel programming */
956 #define AC97_SIGMATEL_CIC1 0x76
957 #define AC97_SIGMATEL_CIC2 0x78
960 static int sigmatel_9708_init(struct ac97_codec * codec)
962 u16 codec72, codec6c;
964 codec72 = codec->codec_read(codec, AC97_SIGMATEL_BIAS2) & 0x8000;
965 codec6c = codec->codec_read(codec, AC97_SIGMATEL_ANALOG);
967 if ((codec72==0) && (codec6c==0)) {
968 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
969 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1000);
970 codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
971 codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0007);
972 } else if ((codec72==0x8000) && (codec6c==0)) {
973 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
974 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1001);
975 codec->codec_write(codec, AC97_SIGMATEL_DAC2INVERT, 0x0008);
976 } else if ((codec72==0x8000) && (codec6c==0x0080)) {
979 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
984 static int sigmatel_9721_init(struct ac97_codec * codec)
986 /* Only set up secondary codec */
990 codec->codec_write(codec, AC97_SURROUND_MASTER, 0L);
992 /* initialize SigmaTel STAC9721/23 as secondary codec, decoding AC link
993 sloc 3,4 = 0x01, slot 7,8 = 0x00, */
994 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x00);
996 /* we don't have the crystal when we are on an AMR card, so use
997 BIT_CLK as our clock source. Write the magic word ABBA and read
998 back to enable register 0x78 */
999 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
1000 codec->codec_read(codec, AC97_SIGMATEL_CIC1);
1002 /* sync all the clocks*/
1003 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x3802);
1009 static int sigmatel_9744_init(struct ac97_codec * codec)
1011 // patch for SigmaTel
1012 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
1013 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x0000); // is this correct? --jk
1014 codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
1015 codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0002);
1016 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
1020 static int cmedia_init(struct ac97_codec *codec)
1022 /* Initialise the CMedia 9739 */
1024 We could set various options here
1025 Register 0x20 bit 0x100 sets mic as center bass
1026 Also do multi_channel_ctrl &=~0x3000 |=0x1000
1028 For now we set up the GPIO and PC beep
1034 codec->codec_write(codec, 0x64, 0x3000);
1035 v = codec->codec_read(codec, 0x64);
1037 codec->codec_write(codec, 0x64, v);
1038 codec->codec_write(codec, 0x70, 0x0100);
1039 codec->codec_write(codec, 0x72, 0x0020);
1043 #define AC97_WM97XX_FMIXER_VOL 0x72
1044 #define AC97_WM97XX_RMIXER_VOL 0x74
1045 #define AC97_WM97XX_TEST 0x5a
1046 #define AC97_WM9704_RPCM_VOL 0x70
1047 #define AC97_WM9711_OUT3VOL 0x16
1049 static int wolfson_init03(struct ac97_codec * codec)
1051 /* this is known to work for the ViewSonic ViewPad 1000 */
1052 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1053 codec->codec_write(codec, AC97_GENERAL_PURPOSE, 0x8000);
1057 static int wolfson_init04(struct ac97_codec * codec)
1059 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1060 codec->codec_write(codec, AC97_WM97XX_RMIXER_VOL, 0x0808);
1062 // patch for DVD noise
1063 codec->codec_write(codec, AC97_WM97XX_TEST, 0x0200);
1065 // init vol as PCM vol
1066 codec->codec_write(codec, AC97_WM9704_RPCM_VOL,
1067 codec->codec_read(codec, AC97_PCMOUT_VOL));
1069 /* set rear surround volume */
1070 codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
1074 /* WM9705, WM9710 */
1075 static int wolfson_init05(struct ac97_codec * codec)
1077 /* set front mixer volume */
1078 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1082 /* WM9711, WM9712 */
1083 static int wolfson_init11(struct ac97_codec * codec)
1085 /* stop pop's during suspend/resume */
1086 codec->codec_write(codec, AC97_WM97XX_TEST,
1087 codec->codec_read(codec, AC97_WM97XX_TEST) & 0xffbf);
1089 /* set out3 volume */
1090 codec->codec_write(codec, AC97_WM9711_OUT3VOL, 0x0808);
1094 static int tritech_init(struct ac97_codec * codec)
1096 codec->codec_write(codec, 0x26, 0x0300);
1097 codec->codec_write(codec, 0x26, 0x0000);
1098 codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
1099 codec->codec_write(codec, AC97_RESERVED_3A, 0x0000);
1104 /* copied from drivers/sound/maestro.c */
1105 static int tritech_maestro_init(struct ac97_codec * codec)
1107 /* no idea what this does */
1108 codec->codec_write(codec, 0x2A, 0x0001);
1109 codec->codec_write(codec, 0x2C, 0x0000);
1110 codec->codec_write(codec, 0x2C, 0XFFFF);
1117 * Presario700 workaround
1118 * for Jack Sense/SPDIF Register mis-setting causing
1120 * by Santiago Nullo 04/05/2002
1123 #define AC97_AD1886_JACK_SENSE 0x72
1125 static int ad1886_init(struct ac97_codec * codec)
1127 /* from AD1886 Specs */
1128 codec->codec_write(codec, AC97_AD1886_JACK_SENSE, 0x0010);
1136 * This is basically standard AC97. It should work as a default for
1137 * almost all modern codecs. Note that some cards wire EAPD *backwards*
1138 * That side of it is up to the card driver not us to cope with.
1142 static int eapd_control(struct ac97_codec * codec, int on)
1145 codec->codec_write(codec, AC97_POWER_CONTROL,
1146 codec->codec_read(codec, AC97_POWER_CONTROL)|0x8000);
1148 codec->codec_write(codec, AC97_POWER_CONTROL,
1149 codec->codec_read(codec, AC97_POWER_CONTROL)&~0x8000);
1153 static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1157 reg = codec->codec_read(codec, AC97_SPDIF_CONTROL);
1161 /* Off by default */
1164 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1165 codec->codec_write(codec, AC97_EXTENDED_STATUS, (reg & ~AC97_EA_SPDIF));
1170 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K;
1173 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K;
1176 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K;
1180 reg &= ~AC97_SC_CC_MASK;
1181 reg |= (mode & AUDIO_CCMASK) << 6;
1183 if(mode & AUDIO_DIGITAL)
1185 if(mode & AUDIO_PRO)
1187 if(mode & AUDIO_DRS)
1190 codec->codec_write(codec, AC97_SPDIF_CONTROL, reg);
1192 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1193 reg &= (AC97_EA_SLOT_MASK);
1194 reg |= AC97_EA_VRA | AC97_EA_SPDIF | slots;
1195 codec->codec_write(codec, AC97_EXTENDED_STATUS, reg);
1197 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1200 codec->codec_write(codec, AC97_EXTENDED_STATUS, reg & ~ AC97_EA_SPDIF);
1207 * Crystal digital audio control (CS4299)
1210 static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1214 if(mode & AUDIO_DIGITAL)
1219 case 0: cv = 0x0; break; /* SPEN off */
1220 case 48000: cv = 0x8004; break; /* 48KHz digital */
1221 case 44100: cv = 0x8104; break; /* 44.1KHz digital */
1222 case 32768: /* 32Khz */
1226 codec->codec_write(codec, 0x68, cv);
1231 * CMedia digital audio control
1235 static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1239 if(mode & AUDIO_DIGITAL)
1244 case 0: cv = 0x0001; break; /* SPEN off */
1245 case 48000: cv = 0x0009; break; /* 48KHz digital */
1249 codec->codec_write(codec, 0x2A, 0x05c4);
1250 codec->codec_write(codec, 0x6C, cv);
1252 /* Switch on mix to surround */
1253 cv = codec->codec_read(codec, 0x64);
1257 codec->codec_write(codec, 0x64, cv);
1262 /* copied from drivers/sound/maestro.c */
1263 #if 0 /* there has been 1 person on the planet with a pt101 that we
1264 know of. If they care, they can put this back in :) */
1265 static int pt101_init(struct ac97_codec * codec)
1267 printk(KERN_INFO "ac97_codec: PT101 Codec detected, initializing but _not_ installing mixer device.\n");
1269 codec->codec_write(codec, 0x2A, 0x0001);
1270 codec->codec_write(codec, 0x2C, 0x0000);
1271 codec->codec_write(codec, 0x2C, 0xFFFF);
1272 codec->codec_write(codec, 0x10, 0x9F1F);
1273 codec->codec_write(codec, 0x12, 0x0808);
1274 codec->codec_write(codec, 0x14, 0x9F1F);
1275 codec->codec_write(codec, 0x16, 0x9F1F);
1276 codec->codec_write(codec, 0x18, 0x0404);
1277 codec->codec_write(codec, 0x1A, 0x0000);
1278 codec->codec_write(codec, 0x1C, 0x0000);
1279 codec->codec_write(codec, 0x02, 0x0404);
1280 codec->codec_write(codec, 0x04, 0x0808);
1281 codec->codec_write(codec, 0x0C, 0x801F);
1282 codec->codec_write(codec, 0x0E, 0x801F);
1288 EXPORT_SYMBOL(ac97_read_proc);
1289 EXPORT_SYMBOL(ac97_probe_codec);
1292 * AC97 library support routines
1296 * ac97_set_dac_rate - set codec rate adaption
1298 * @rate: rate in hertz
1300 * Set the DAC rate. Assumes the codec supports VRA. The caller is
1301 * expected to have checked this little detail.
1304 unsigned int ac97_set_dac_rate(struct ac97_codec *codec, unsigned int rate)
1306 unsigned int new_rate = rate;
1308 u32 mast_vol, phone_vol, mono_vol, pcm_vol;
1309 u32 mute_vol = 0x8000; /* The mute volume? */
1311 if(rate != codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE))
1313 /* Mute several registers */
1314 mast_vol = codec->codec_read(codec, AC97_MASTER_VOL_STEREO);
1315 mono_vol = codec->codec_read(codec, AC97_MASTER_VOL_MONO);
1316 phone_vol = codec->codec_read(codec, AC97_HEADPHONE_VOL);
1317 pcm_vol = codec->codec_read(codec, AC97_PCMOUT_VOL);
1318 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mute_vol);
1319 codec->codec_write(codec, AC97_MASTER_VOL_MONO, mute_vol);
1320 codec->codec_write(codec, AC97_HEADPHONE_VOL, mute_vol);
1321 codec->codec_write(codec, AC97_PCMOUT_VOL, mute_vol);
1323 /* Power down the DAC */
1324 dacp=codec->codec_read(codec, AC97_POWER_CONTROL);
1325 codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0200);
1326 /* Load the rate and read the effective rate */
1327 codec->codec_write(codec, AC97_PCM_FRONT_DAC_RATE, rate);
1328 new_rate=codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE);
1329 /* Power it back up */
1330 codec->codec_write(codec, AC97_POWER_CONTROL, dacp);
1332 /* Restore volumes */
1333 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mast_vol);
1334 codec->codec_write(codec, AC97_MASTER_VOL_MONO, mono_vol);
1335 codec->codec_write(codec, AC97_HEADPHONE_VOL, phone_vol);
1336 codec->codec_write(codec, AC97_PCMOUT_VOL, pcm_vol);
1341 EXPORT_SYMBOL(ac97_set_dac_rate);
1344 * ac97_set_adc_rate - set codec rate adaption
1346 * @rate: rate in hertz
1348 * Set the ADC rate. Assumes the codec supports VRA. The caller is
1349 * expected to have checked this little detail.
1352 unsigned int ac97_set_adc_rate(struct ac97_codec *codec, unsigned int rate)
1354 unsigned int new_rate = rate;
1357 if(rate != codec->codec_read(codec, AC97_PCM_LR_ADC_RATE))
1359 /* Power down the ADC */
1360 dacp=codec->codec_read(codec, AC97_POWER_CONTROL);
1361 codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0100);
1362 /* Load the rate and read the effective rate */
1363 codec->codec_write(codec, AC97_PCM_LR_ADC_RATE, rate);
1364 new_rate=codec->codec_read(codec, AC97_PCM_LR_ADC_RATE);
1365 /* Power it back up */
1366 codec->codec_write(codec, AC97_POWER_CONTROL, dacp);
1371 EXPORT_SYMBOL(ac97_set_adc_rate);
1373 int ac97_save_state(struct ac97_codec *codec)
1378 EXPORT_SYMBOL(ac97_save_state);
1380 int ac97_restore_state(struct ac97_codec *codec)
1383 unsigned int left, right, val;
1385 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
1386 if (!supported_mixer(codec, i))
1389 val = codec->mixer_state[i];
1392 codec->write_mixer(codec, i, left, right);
1397 EXPORT_SYMBOL(ac97_restore_state);
1400 * ac97_register_driver - register a codec helper
1401 * @driver: Driver handler
1403 * Register a handler for codecs matching the codec id. The handler
1404 * attach function is called for all present codecs and will be
1405 * called when new codecs are discovered.
1408 int ac97_register_driver(struct ac97_driver *driver)
1410 struct list_head *l;
1411 struct ac97_codec *c;
1414 INIT_LIST_HEAD(&driver->list);
1415 list_add(&driver->list, &codec_drivers);
1417 list_for_each(l, &codecs)
1419 c = list_entry(l, struct ac97_codec, list);
1420 if(c->driver != NULL || ((c->model ^ driver->codec_id) & driver->codec_mask))
1422 if(driver->probe(c, driver))
1430 EXPORT_SYMBOL_GPL(ac97_register_driver);
1433 * ac97_unregister_driver - unregister a codec helper
1434 * @driver: Driver handler
1436 * Unregister a handler for codecs matching the codec id. The handler
1437 * remove function is called for all matching codecs.
1440 void ac97_unregister_driver(struct ac97_driver *driver)
1442 struct list_head *l;
1443 struct ac97_codec *c;
1446 list_del_init(&driver->list);
1448 list_for_each(l, &codecs)
1450 c = list_entry(l, struct ac97_codec, list);
1451 if (c->driver == driver) {
1452 driver->remove(c, driver);
1460 EXPORT_SYMBOL_GPL(ac97_unregister_driver);
1462 static int swap_headphone(int remove_master)
1464 struct list_head *l;
1465 struct ac97_codec *c;
1467 if (remove_master) {
1469 list_for_each(l, &codecs)
1471 c = list_entry(l, struct ac97_codec, list);
1472 if (supported_mixer(c, SOUND_MIXER_PHONEOUT))
1473 c->supported_mixers &= ~SOUND_MASK_PHONEOUT;
1477 ac97_hw[SOUND_MIXER_PHONEOUT].offset = AC97_MASTER_VOL_STEREO;
1479 /* Scale values already match */
1480 ac97_hw[SOUND_MIXER_VOLUME].offset = AC97_MASTER_VOL_MONO;
1484 static int apply_quirk(int quirk)
1487 case AC97_TUNE_NONE:
1489 case AC97_TUNE_HP_ONLY:
1490 return swap_headphone(1);
1491 case AC97_TUNE_SWAP_HP:
1492 return swap_headphone(0);
1493 case AC97_TUNE_SWAP_SURROUND:
1494 return -ENOSYS; /* not yet implemented */
1495 case AC97_TUNE_AD_SHARING:
1496 return -ENOSYS; /* not yet implemented */
1497 case AC97_TUNE_ALC_JACK:
1498 return -ENOSYS; /* not yet implemented */
1504 * ac97_tune_hardware - tune up the hardware
1505 * @pdev: pci_dev pointer
1506 * @quirk: quirk list
1507 * @override: explicit quirk value (overrides if not AC97_TUNE_DEFAULT)
1509 * Do some workaround for each pci device, such as renaming of the
1510 * headphone (true line-out) control as "Master".
1511 * The quirk-list must be terminated with a zero-filled entry.
1513 * Returns zero if successful, or a negative error code on failure.
1516 int ac97_tune_hardware(struct pci_dev *pdev, struct ac97_quirk *quirk, int override)
1523 if (override != AC97_TUNE_DEFAULT) {
1524 result = apply_quirk(override);
1526 printk(KERN_ERR "applying quirk type %d failed (%d)\n", override, result);
1530 for (; quirk->vendor; quirk++) {
1531 if (quirk->vendor != pdev->subsystem_vendor)
1533 if ((! quirk->mask && quirk->device == pdev->subsystem_device) ||
1534 quirk->device == (quirk->mask & pdev->subsystem_device)) {
1536 printk("ac97 quirk for %s (%04x:%04x)\n", quirk->name, ac97->subsystem_vendor, pdev->subsystem_device);
1538 result = apply_quirk(quirk->type);
1540 printk(KERN_ERR "applying quirk type %d for %s failed (%d)\n", quirk->type, quirk->name, result);
1547 EXPORT_SYMBOL_GPL(ac97_tune_hardware);
1549 MODULE_LICENSE("GPL");