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>
58 #include <asm/semaphore.h>
60 #define CODEC_ID_BUFSZ 14
62 static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel);
63 static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel,
64 unsigned int left, unsigned int right);
65 static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val );
66 static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask);
67 static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg);
69 static int ac97_init_mixer(struct ac97_codec *codec);
71 static int wolfson_init03(struct ac97_codec * codec);
72 static int wolfson_init04(struct ac97_codec * codec);
73 static int wolfson_init05(struct ac97_codec * codec);
74 static int wolfson_init11(struct ac97_codec * codec);
75 static int wolfson_init13(struct ac97_codec * codec);
76 static int tritech_init(struct ac97_codec * codec);
77 static int tritech_maestro_init(struct ac97_codec * codec);
78 static int sigmatel_9708_init(struct ac97_codec *codec);
79 static int sigmatel_9721_init(struct ac97_codec *codec);
80 static int sigmatel_9744_init(struct ac97_codec *codec);
81 static int ad1886_init(struct ac97_codec *codec);
82 static int eapd_control(struct ac97_codec *codec, int);
83 static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
84 static int cmedia_init(struct ac97_codec * codec);
85 static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
86 static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
92 * If you are adding a codec then you should be able to use
93 * eapd_ops - any codec that supports EAPD amp control (most)
94 * null_ops - any ancient codec that supports nothing
96 * The three functions are
97 * init - used for non AC97 standard initialisation
98 * amplifier - used to do amplifier control (1=on 0=off)
99 * digital - switch to digital modes (0 = analog)
101 * Not all codecs support all features, not all drivers use all the
105 static struct ac97_ops null_ops = { NULL, NULL, NULL };
106 static struct ac97_ops default_ops = { NULL, eapd_control, NULL };
107 static struct ac97_ops default_digital_ops = { NULL, eapd_control, generic_digital_control};
108 static struct ac97_ops wolfson_ops03 = { wolfson_init03, NULL, NULL };
109 static struct ac97_ops wolfson_ops04 = { wolfson_init04, NULL, NULL };
110 static struct ac97_ops wolfson_ops05 = { wolfson_init05, NULL, NULL };
111 static struct ac97_ops wolfson_ops11 = { wolfson_init11, NULL, NULL };
112 static struct ac97_ops wolfson_ops13 = { wolfson_init13, NULL, NULL };
113 static struct ac97_ops tritech_ops = { tritech_init, NULL, NULL };
114 static struct ac97_ops tritech_m_ops = { tritech_maestro_init, NULL, NULL };
115 static struct ac97_ops sigmatel_9708_ops = { sigmatel_9708_init, NULL, NULL };
116 static struct ac97_ops sigmatel_9721_ops = { sigmatel_9721_init, NULL, NULL };
117 static struct ac97_ops sigmatel_9744_ops = { sigmatel_9744_init, NULL, NULL };
118 static struct ac97_ops crystal_digital_ops = { NULL, eapd_control, crystal_digital_control };
119 static struct ac97_ops ad1886_ops = { ad1886_init, eapd_control, NULL };
120 static struct ac97_ops cmedia_ops = { NULL, eapd_control, NULL};
121 static struct ac97_ops cmedia_digital_ops = { cmedia_init, eapd_control, cmedia_digital_control};
123 /* sorted by vendor/device id */
124 static const struct {
127 struct ac97_ops *ops;
129 } ac97_codec_ids[] = {
130 {0x41445303, "Analog Devices AD1819", &null_ops},
131 {0x41445340, "Analog Devices AD1881", &null_ops},
132 {0x41445348, "Analog Devices AD1881A", &null_ops},
133 {0x41445360, "Analog Devices AD1885", &default_ops},
134 {0x41445361, "Analog Devices AD1886", &ad1886_ops},
135 {0x41445370, "Analog Devices AD1981", &null_ops},
136 {0x41445372, "Analog Devices AD1981A", &null_ops},
137 {0x41445374, "Analog Devices AD1981B", &null_ops},
138 {0x41445460, "Analog Devices AD1885", &default_ops},
139 {0x41445461, "Analog Devices AD1886", &ad1886_ops},
140 {0x414B4D00, "Asahi Kasei AK4540", &null_ops},
141 {0x414B4D01, "Asahi Kasei AK4542", &null_ops},
142 {0x414B4D02, "Asahi Kasei AK4543", &null_ops},
143 {0x414C4326, "ALC100P", &null_ops},
144 {0x414C4710, "ALC200/200P", &null_ops},
145 {0x414C4720, "ALC650", &default_digital_ops},
146 {0x434D4941, "CMedia", &cmedia_ops, AC97_NO_PCM_VOLUME },
147 {0x434D4942, "CMedia", &cmedia_ops, AC97_NO_PCM_VOLUME },
148 {0x434D4961, "CMedia", &cmedia_digital_ops, AC97_NO_PCM_VOLUME },
149 {0x43525900, "Cirrus Logic CS4297", &default_ops},
150 {0x43525903, "Cirrus Logic CS4297", &default_ops},
151 {0x43525913, "Cirrus Logic CS4297A rev A", &default_ops},
152 {0x43525914, "Cirrus Logic CS4297A rev B", &default_ops},
153 {0x43525923, "Cirrus Logic CS4298", &null_ops},
154 {0x4352592B, "Cirrus Logic CS4294", &null_ops},
155 {0x4352592D, "Cirrus Logic CS4294", &null_ops},
156 {0x43525931, "Cirrus Logic CS4299 rev A", &crystal_digital_ops},
157 {0x43525933, "Cirrus Logic CS4299 rev C", &crystal_digital_ops},
158 {0x43525934, "Cirrus Logic CS4299 rev D", &crystal_digital_ops},
159 {0x43585430, "CXT48", &default_ops, AC97_DELUDED_MODEM },
160 {0x43585442, "CXT66", &default_ops, AC97_DELUDED_MODEM },
161 {0x44543031, "Diamond Technology DT0893", &default_ops},
162 {0x45838308, "ESS Allegro ES1988", &null_ops},
163 {0x49434511, "ICE1232", &null_ops}, /* I hope --jk */
164 {0x4e534331, "National Semiconductor LM4549", &null_ops},
165 {0x53494c22, "Silicon Laboratory Si3036", &null_ops},
166 {0x53494c23, "Silicon Laboratory Si3038", &null_ops},
167 {0x545200FF, "TriTech TR?????", &tritech_m_ops},
168 {0x54524102, "TriTech TR28022", &null_ops},
169 {0x54524103, "TriTech TR28023", &null_ops},
170 {0x54524106, "TriTech TR28026", &null_ops},
171 {0x54524108, "TriTech TR28028", &tritech_ops},
172 {0x54524123, "TriTech TR A5", &null_ops},
173 {0x574D4C03, "Wolfson WM9703/07/08/17", &wolfson_ops03},
174 {0x574D4C04, "Wolfson WM9704M/WM9704Q", &wolfson_ops04},
175 {0x574D4C05, "Wolfson WM9705/WM9710", &wolfson_ops05},
176 {0x574D4C09, "Wolfson WM9709", &null_ops},
177 {0x574D4C12, "Wolfson WM9711/9712", &wolfson_ops11},
178 {0x574D4C13, "Wolfson WM9713", &wolfson_ops13, AC97_DEFAULT_POWER_OFF},
179 {0x83847600, "SigmaTel STAC????", &null_ops},
180 {0x83847604, "SigmaTel STAC9701/3/4/5", &null_ops},
181 {0x83847605, "SigmaTel STAC9704", &null_ops},
182 {0x83847608, "SigmaTel STAC9708", &sigmatel_9708_ops},
183 {0x83847609, "SigmaTel STAC9721/23", &sigmatel_9721_ops},
184 {0x83847644, "SigmaTel STAC9744/45", &sigmatel_9744_ops},
185 {0x83847652, "SigmaTel STAC9752/53", &default_ops},
186 {0x83847656, "SigmaTel STAC9756/57", &sigmatel_9744_ops},
187 {0x83847666, "SigmaTel STAC9750T", &sigmatel_9744_ops},
188 {0x83847684, "SigmaTel STAC9783/84?", &null_ops},
189 {0x57454301, "Winbond 83971D", &null_ops},
192 static const char *ac97_stereo_enhancements[] =
194 /* 0 */ "No 3D Stereo Enhancement",
195 /* 1 */ "Analog Devices Phat Stereo",
196 /* 2 */ "Creative Stereo Enhancement",
197 /* 3 */ "National Semi 3D Stereo Enhancement",
198 /* 4 */ "YAMAHA Ymersion",
199 /* 5 */ "BBE 3D Stereo Enhancement",
200 /* 6 */ "Crystal Semi 3D Stereo Enhancement",
201 /* 7 */ "Qsound QXpander",
202 /* 8 */ "Spatializer 3D Stereo Enhancement",
203 /* 9 */ "SRS 3D Stereo Enhancement",
204 /* 10 */ "Platform Tech 3D Stereo Enhancement",
205 /* 11 */ "AKM 3D Audio",
206 /* 12 */ "Aureal Stereo Enhancement",
207 /* 13 */ "Aztech 3D Enhancement",
208 /* 14 */ "Binaura 3D Audio Enhancement",
209 /* 15 */ "ESS Technology Stereo Enhancement",
210 /* 16 */ "Harman International VMAx",
211 /* 17 */ "Nvidea 3D Stereo Enhancement",
212 /* 18 */ "Philips Incredible Sound",
213 /* 19 */ "Texas Instruments 3D Stereo Enhancement",
214 /* 20 */ "VLSI Technology 3D Stereo Enhancement",
215 /* 21 */ "TriTech 3D Stereo Enhancement",
216 /* 22 */ "Realtek 3D Stereo Enhancement",
217 /* 23 */ "Samsung 3D Stereo Enhancement",
218 /* 24 */ "Wolfson Microelectronics 3D Enhancement",
219 /* 25 */ "Delta Integration 3D Enhancement",
220 /* 26 */ "SigmaTel 3D Enhancement",
221 /* 27 */ "Winbond 3D Stereo Enhancement",
222 /* 28 */ "Rockwell 3D Stereo Enhancement",
223 /* 29 */ "Reserved 29",
224 /* 30 */ "Reserved 30",
225 /* 31 */ "Reserved 31"
228 /* this table has default mixer values for all OSS mixers. */
229 static struct mixer_defaults {
232 } mixer_defaults[SOUND_MIXER_NRDEVICES] = {
233 /* all values 0 -> 100 in bytes */
234 {SOUND_MIXER_VOLUME, 0x4343},
235 {SOUND_MIXER_BASS, 0x4343},
236 {SOUND_MIXER_TREBLE, 0x4343},
237 {SOUND_MIXER_PCM, 0x4343},
238 {SOUND_MIXER_SPEAKER, 0x4343},
239 {SOUND_MIXER_LINE, 0x4343},
240 {SOUND_MIXER_MIC, 0x0000},
241 {SOUND_MIXER_CD, 0x4343},
242 {SOUND_MIXER_ALTPCM, 0x4343},
243 {SOUND_MIXER_IGAIN, 0x4343},
244 {SOUND_MIXER_LINE1, 0x4343},
245 {SOUND_MIXER_PHONEIN, 0x4343},
246 {SOUND_MIXER_PHONEOUT, 0x4343},
247 {SOUND_MIXER_VIDEO, 0x4343},
251 /* table to scale scale from OSS mixer value to AC97 mixer register value */
252 static struct ac97_mixer_hw {
253 unsigned char offset;
255 } ac97_hw[SOUND_MIXER_NRDEVICES]= {
256 [SOUND_MIXER_VOLUME] = {AC97_MASTER_VOL_STEREO,64},
257 [SOUND_MIXER_BASS] = {AC97_MASTER_TONE, 16},
258 [SOUND_MIXER_TREBLE] = {AC97_MASTER_TONE, 16},
259 [SOUND_MIXER_PCM] = {AC97_PCMOUT_VOL, 32},
260 [SOUND_MIXER_SPEAKER] = {AC97_PCBEEP_VOL, 16},
261 [SOUND_MIXER_LINE] = {AC97_LINEIN_VOL, 32},
262 [SOUND_MIXER_MIC] = {AC97_MIC_VOL, 32},
263 [SOUND_MIXER_CD] = {AC97_CD_VOL, 32},
264 [SOUND_MIXER_ALTPCM] = {AC97_HEADPHONE_VOL, 64},
265 [SOUND_MIXER_IGAIN] = {AC97_RECORD_GAIN, 16},
266 [SOUND_MIXER_LINE1] = {AC97_AUX_VOL, 32},
267 [SOUND_MIXER_PHONEIN] = {AC97_PHONE_VOL, 32},
268 [SOUND_MIXER_PHONEOUT] = {AC97_MASTER_VOL_MONO, 64},
269 [SOUND_MIXER_VIDEO] = {AC97_VIDEO_VOL, 32},
272 /* the following tables allow us to go from OSS <-> ac97 quickly. */
273 enum ac97_recsettings {
279 AC97_REC_STEREO, /* combination of all enabled outputs.. */
280 AC97_REC_MONO, /*.. or the mono equivalent */
284 static const unsigned int ac97_rm2oss[] = {
285 [AC97_REC_MIC] = SOUND_MIXER_MIC,
286 [AC97_REC_CD] = SOUND_MIXER_CD,
287 [AC97_REC_VIDEO] = SOUND_MIXER_VIDEO,
288 [AC97_REC_AUX] = SOUND_MIXER_LINE1,
289 [AC97_REC_LINE] = SOUND_MIXER_LINE,
290 [AC97_REC_STEREO]= SOUND_MIXER_IGAIN,
291 [AC97_REC_PHONE] = SOUND_MIXER_PHONEIN
294 /* indexed by bit position */
295 static const unsigned int ac97_oss_rm[] = {
296 [SOUND_MIXER_MIC] = AC97_REC_MIC,
297 [SOUND_MIXER_CD] = AC97_REC_CD,
298 [SOUND_MIXER_VIDEO] = AC97_REC_VIDEO,
299 [SOUND_MIXER_LINE1] = AC97_REC_AUX,
300 [SOUND_MIXER_LINE] = AC97_REC_LINE,
301 [SOUND_MIXER_IGAIN] = AC97_REC_STEREO,
302 [SOUND_MIXER_PHONEIN] = AC97_REC_PHONE
305 static LIST_HEAD(codecs);
306 static LIST_HEAD(codec_drivers);
307 static DECLARE_MUTEX(codec_sem);
309 /* reads the given OSS mixer from the ac97 the caller must have insured that the ac97 knows
310 about that given mixer, and should be holding a spinlock for the card */
311 static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel)
316 struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
318 val = codec->codec_read(codec , mh->offset);
320 if (val & AC97_MUTE) {
322 } else if (AC97_STEREO_MASK & (1 << oss_channel)) {
323 /* nice stereo mixers .. */
326 left = (val >> 8) & 0x7f;
329 if (oss_channel == SOUND_MIXER_IGAIN) {
330 right = (right * 100) / mh->scale;
331 left = (left * 100) / mh->scale;
333 /* these may have 5 or 6 bit resolution */
334 if(oss_channel == SOUND_MIXER_VOLUME || oss_channel == SOUND_MIXER_ALTPCM)
335 scale = (1 << codec->bit_resolution);
339 right = 100 - ((right * 100) / scale);
340 left = 100 - ((left * 100) / scale);
342 ret = left | (right << 8);
343 } else if (oss_channel == SOUND_MIXER_SPEAKER) {
344 ret = 100 - ((((val & 0x1e)>>1) * 100) / mh->scale);
345 } else if (oss_channel == SOUND_MIXER_PHONEIN) {
346 ret = 100 - (((val & 0x1f) * 100) / mh->scale);
347 } else if (oss_channel == SOUND_MIXER_PHONEOUT) {
348 scale = (1 << codec->bit_resolution);
349 ret = 100 - (((val & 0x1f) * 100) / scale);
350 } else if (oss_channel == SOUND_MIXER_MIC) {
351 ret = 100 - (((val & 0x1f) * 100) / mh->scale);
352 /* the low bit is optional in the tone sliders and masking
353 it lets us avoid the 0xf 'bypass'.. */
354 } else if (oss_channel == SOUND_MIXER_BASS) {
355 ret = 100 - ((((val >> 8) & 0xe) * 100) / mh->scale);
356 } else if (oss_channel == SOUND_MIXER_TREBLE) {
357 ret = 100 - (((val & 0xe) * 100) / mh->scale);
361 printk("ac97_codec: read OSS mixer %2d (%s ac97 register 0x%02x), "
362 "0x%04x -> 0x%04x\n",
363 oss_channel, codec->id ? "Secondary" : "Primary",
364 mh->offset, val, ret);
370 /* write the OSS encoded volume to the given OSS encoded mixer, again caller's job to
371 make sure all is well in arg land, call with spinlock held */
372 static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel,
373 unsigned int left, unsigned int right)
377 struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
380 printk("ac97_codec: wrote OSS mixer %2d (%s ac97 register 0x%02x), "
381 "left vol:%2d, right vol:%2d:",
382 oss_channel, codec->id ? "Secondary" : "Primary",
383 mh->offset, left, right);
386 if (AC97_STEREO_MASK & (1 << oss_channel)) {
388 if (left == 0 && right == 0) {
391 if (oss_channel == SOUND_MIXER_IGAIN) {
392 right = (right * mh->scale) / 100;
393 left = (left * mh->scale) / 100;
394 if (right >= mh->scale)
396 if (left >= mh->scale)
399 /* these may have 5 or 6 bit resolution */
400 if (oss_channel == SOUND_MIXER_VOLUME ||
401 oss_channel == SOUND_MIXER_ALTPCM)
402 scale = (1 << codec->bit_resolution);
406 right = ((100 - right) * scale) / 100;
407 left = ((100 - left) * scale) / 100;
413 val = (left << 8) | right;
415 } else if (oss_channel == SOUND_MIXER_BASS) {
416 val = codec->codec_read(codec , mh->offset) & ~0x0f00;
417 left = ((100 - left) * mh->scale) / 100;
418 if (left >= mh->scale)
420 val |= (left << 8) & 0x0e00;
421 } else if (oss_channel == SOUND_MIXER_TREBLE) {
422 val = codec->codec_read(codec , mh->offset) & ~0x000f;
423 left = ((100 - left) * mh->scale) / 100;
424 if (left >= mh->scale)
426 val |= left & 0x000e;
427 } else if(left == 0) {
429 } else if (oss_channel == SOUND_MIXER_SPEAKER) {
430 left = ((100 - left) * mh->scale) / 100;
431 if (left >= mh->scale)
434 } else if (oss_channel == SOUND_MIXER_PHONEIN) {
435 left = ((100 - left) * mh->scale) / 100;
436 if (left >= mh->scale)
439 } else if (oss_channel == SOUND_MIXER_PHONEOUT) {
440 scale = (1 << codec->bit_resolution);
441 left = ((100 - left) * scale) / 100;
442 if (left >= mh->scale)
445 } else if (oss_channel == SOUND_MIXER_MIC) {
446 val = codec->codec_read(codec , mh->offset) & ~0x801f;
447 left = ((100 - left) * mh->scale) / 100;
448 if (left >= mh->scale)
451 /* the low bit is optional in the tone sliders and masking
452 it lets us avoid the 0xf 'bypass'.. */
455 printk(" 0x%04x", val);
458 codec->codec_write(codec, mh->offset, val);
461 val = codec->codec_read(codec, mh->offset);
462 printk(" -> 0x%04x\n", val);
466 /* a thin wrapper for write_mixer */
467 static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val )
469 unsigned int left,right;
471 /* cleanse input a little */
472 right = ((val >> 8) & 0xff) ;
473 left = (val & 0xff) ;
475 if (right > 100) right = 100;
476 if (left > 100) left = 100;
478 codec->mixer_state[oss_mixer] = (right << 8) | left;
479 codec->write_mixer(codec, oss_mixer, left, right);
482 /* read or write the recmask, the ac97 can really have left and right recording
483 inputs independantly set, but OSS doesn't seem to want us to express that to
484 the user. the caller guarantees that we have a supported bit set, and they
485 must be holding the card's spinlock */
486 static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask)
491 /* read it from the card */
492 val = codec->codec_read(codec, AC97_RECORD_SELECT);
494 printk("ac97_codec: ac97 recmask to set to 0x%04x\n", val);
496 return (1 << ac97_rm2oss[val & 0x07]);
499 /* else, write the first set in the mask as the
501 /* clear out current set value first (AC97 supports only 1 input!) */
502 val = (1 << ac97_rm2oss[codec->codec_read(codec, AC97_RECORD_SELECT) & 0x07]);
507 val = ac97_oss_rm[val-1];
508 val |= val << 8; /* set both channels */
511 printk("ac97_codec: setting ac97 recmask to 0x%04x\n", val);
514 codec->codec_write(codec, AC97_RECORD_SELECT, val);
519 static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg)
523 if (cmd == SOUND_MIXER_INFO) {
525 memset(&info, 0, sizeof(info));
526 strlcpy(info.id, codec->name, sizeof(info.id));
527 strlcpy(info.name, codec->name, sizeof(info.name));
528 info.modify_counter = codec->modcnt;
529 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
533 if (cmd == SOUND_OLD_MIXER_INFO) {
534 _old_mixer_info info;
535 memset(&info, 0, sizeof(info));
536 strlcpy(info.id, codec->name, sizeof(info.id));
537 strlcpy(info.name, codec->name, sizeof(info.name));
538 if (copy_to_user((void __user *)arg, &info, sizeof(info)))
543 if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
546 if (cmd == OSS_GETVERSION)
547 return put_user(SOUND_VERSION, (int __user *)arg);
549 if (_SIOC_DIR(cmd) == _SIOC_READ) {
550 switch (_IOC_NR(cmd)) {
551 case SOUND_MIXER_RECSRC: /* give them the current record source */
552 if (!codec->recmask_io) {
555 val = codec->recmask_io(codec, 1, 0);
559 case SOUND_MIXER_DEVMASK: /* give them the supported mixers */
560 val = codec->supported_mixers;
563 case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
564 val = codec->record_sources;
567 case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
568 val = codec->stereo_mixers;
571 case SOUND_MIXER_CAPS:
572 val = SOUND_CAP_EXCL_INPUT;
575 default: /* read a specific mixer */
578 if (!supported_mixer(codec, i))
581 /* do we ever want to touch the hardware? */
582 /* val = codec->read_mixer(codec, i); */
583 val = codec->mixer_state[i];
586 return put_user(val, (int __user *)arg);
589 if (_SIOC_DIR(cmd) == (_SIOC_WRITE|_SIOC_READ)) {
591 if (get_user(val, (int __user *)arg))
594 switch (_IOC_NR(cmd)) {
595 case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
596 if (!codec->recmask_io) return -EINVAL;
598 if (!(val &= codec->record_sources)) return -EINVAL;
600 codec->recmask_io(codec, 0, val);
603 default: /* write a specific mixer */
606 if (!supported_mixer(codec, i))
609 ac97_set_mixer(codec, i, val);
617 /* entry point for /proc/driver/controller_vendor/ac97/%d */
618 int ac97_read_proc (char *page, char **start, off_t off,
619 int count, int *eof, void *data)
621 int len = 0, cap, extid, val, id1, id2;
622 struct ac97_codec *codec;
625 if ((codec = data) == NULL)
628 id1 = codec->codec_read(codec, AC97_VENDOR_ID1);
629 id2 = codec->codec_read(codec, AC97_VENDOR_ID2);
630 len += sprintf (page+len, "Vendor name : %s\n", codec->name);
631 len += sprintf (page+len, "Vendor id : %04X %04X\n", id1, id2);
633 extid = codec->codec_read(codec, AC97_EXTENDED_ID);
634 extid &= ~((1<<2)|(1<<4)|(1<<5)|(1<<10)|(1<<11)|(1<<12)|(1<<13));
635 len += sprintf (page+len, "AC97 Version : %s\n",
636 extid ? "2.0 or later" : "1.0");
637 if (extid) is_ac97_20 = 1;
639 cap = codec->codec_read(codec, AC97_RESET);
640 len += sprintf (page+len, "Capabilities :%s%s%s%s%s%s\n",
641 cap & 0x0001 ? " -dedicated MIC PCM IN channel-" : "",
642 cap & 0x0002 ? " -reserved1-" : "",
643 cap & 0x0004 ? " -bass & treble-" : "",
644 cap & 0x0008 ? " -simulated stereo-" : "",
645 cap & 0x0010 ? " -headphone out-" : "",
646 cap & 0x0020 ? " -loudness-" : "");
648 len += sprintf (page+len, "DAC resolutions :%s%s%s\n",
650 val & 0x0040 ? " -18-bit-" : "",
651 val & 0x0080 ? " -20-bit-" : "");
653 len += sprintf (page+len, "ADC resolutions :%s%s%s\n",
655 val & 0x0100 ? " -18-bit-" : "",
656 val & 0x0200 ? " -20-bit-" : "");
657 len += sprintf (page+len, "3D enhancement : %s\n",
658 ac97_stereo_enhancements[(cap >> 10) & 0x1f]);
660 val = codec->codec_read(codec, AC97_GENERAL_PURPOSE);
661 len += sprintf (page+len, "POP path : %s 3D\n"
663 "3D enhancement : %s\n"
667 "ADC/DAC loopback : %s\n",
668 val & 0x8000 ? "post" : "pre",
669 val & 0x4000 ? "on" : "off",
670 val & 0x2000 ? "on" : "off",
671 val & 0x1000 ? "on" : "off",
672 val & 0x0200 ? "MIC" : "MIX",
673 val & 0x0100 ? "MIC2" : "MIC1",
674 val & 0x0080 ? "on" : "off");
676 extid = codec->codec_read(codec, AC97_EXTENDED_ID);
678 len += sprintf (page+len, "Ext Capabilities :%s%s%s%s%s%s%s\n",
679 cap & 0x0001 ? " -var rate PCM audio-" : "",
680 cap & 0x0002 ? " -2x PCM audio out-" : "",
681 cap & 0x0008 ? " -var rate MIC in-" : "",
682 cap & 0x0040 ? " -PCM center DAC-" : "",
683 cap & 0x0080 ? " -PCM surround DAC-" : "",
684 cap & 0x0100 ? " -PCM LFE DAC-" : "",
685 cap & 0x0200 ? " -slot/DAC mappings-" : "");
687 len += sprintf (page+len, "Front DAC rate : %d\n",
688 codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE));
695 * codec_id - Turn id1/id2 into a PnP string
698 * @buf: CODEC_ID_BUFSZ byte buffer
700 * Fills buf with a zero terminated PnP ident string for the id1/id2
701 * pair. For convenience the return is the passed in buffer pointer.
704 static char *codec_id(u16 id1, u16 id2, char *buf)
707 snprintf(buf, CODEC_ID_BUFSZ, "0x%04x:0x%04x", id1, id2);
710 buf[1] = (id1 & 0xFF);
712 snprintf(buf+3, CODEC_ID_BUFSZ - 3, "%d", id2&0xFF);
718 * ac97_check_modem - Check if the Codec is a modem
719 * @codec: codec to check
721 * Return true if the device is an AC97 1.0 or AC97 2.0 modem
724 static int ac97_check_modem(struct ac97_codec *codec)
726 /* Check for an AC97 1.0 soft modem (ID1) */
727 if(codec->codec_read(codec, AC97_RESET) & 2)
729 /* Check for an AC97 2.x soft modem */
730 codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0L);
731 if(codec->codec_read(codec, AC97_EXTENDED_MODEM_ID) & 1)
738 * ac97_alloc_codec - Allocate an AC97 codec
740 * Returns a new AC97 codec structure. AC97 codecs may become
741 * refcounted soon so this interface is needed. Returns with
742 * one reference taken.
745 struct ac97_codec *ac97_alloc_codec(void)
747 struct ac97_codec *codec = kmalloc(sizeof(struct ac97_codec), GFP_KERNEL);
751 memset(codec, 0, sizeof(*codec));
752 spin_lock_init(&codec->lock);
753 INIT_LIST_HEAD(&codec->list);
757 EXPORT_SYMBOL(ac97_alloc_codec);
760 * ac97_release_codec - Release an AC97 codec
761 * @codec: codec to release
763 * Release an allocated AC97 codec. This will be refcounted in
764 * time but for the moment is trivial. Calls the unregister
765 * handler if the codec is now defunct.
768 void ac97_release_codec(struct ac97_codec *codec)
770 /* Remove from the list first, we don't want to be
773 list_del(&codec->list);
776 * The driver needs to deal with internal
777 * locking to avoid accidents here.
780 codec->driver->remove(codec, codec->driver);
784 EXPORT_SYMBOL(ac97_release_codec);
787 * ac97_probe_codec - Initialize and setup AC97-compatible codec
788 * @codec: (in/out) Kernel info for a single AC97 codec
790 * Reset the AC97 codec, then initialize the mixer and
791 * the rest of the @codec structure.
793 * The codec_read and codec_write fields of @codec are
794 * required to be setup and working when this function
795 * is called. All other fields are set by this function.
797 * codec_wait field of @codec can optionally be provided
798 * when calling this function. If codec_wait is not %NULL,
799 * this function will call codec_wait any time it is
800 * necessary to wait for the audio chip to reach the
801 * codec-ready state. If codec_wait is %NULL, then
802 * the default behavior is to call schedule_timeout.
803 * Currently codec_wait is used to wait for AC97 codec
806 * Some codecs will power down when a register reset is
807 * performed. We now check for such codecs.
809 * Returns 1 (true) on success, or 0 (false) on failure.
812 int ac97_probe_codec(struct ac97_codec *codec)
817 char cidbuf[CODEC_ID_BUFSZ];
820 struct ac97_driver *d;
822 /* wait for codec-ready state */
823 if (codec->codec_wait)
824 codec->codec_wait(codec);
828 /* will the codec power down if register reset ? */
829 id1 = codec->codec_read(codec, AC97_VENDOR_ID1);
830 id2 = codec->codec_read(codec, AC97_VENDOR_ID2);
832 codec->codec_ops = &null_ops;
833 for (i = 0; i < ARRAY_SIZE(ac97_codec_ids); i++) {
834 if (ac97_codec_ids[i].id == ((id1 << 16) | id2)) {
835 codec->type = ac97_codec_ids[i].id;
836 codec->name = ac97_codec_ids[i].name;
837 codec->codec_ops = ac97_codec_ids[i].ops;
838 codec->flags = ac97_codec_ids[i].flags;
843 codec->model = (id1 << 16) | id2;
844 if ((codec->flags & AC97_DEFAULT_POWER_OFF) == 0) {
845 /* reset codec and wait for the ready bit before we continue */
846 codec->codec_write(codec, AC97_RESET, 0L);
847 if (codec->codec_wait)
848 codec->codec_wait(codec);
853 /* probing AC97 codec, AC97 2.0 says that bit 15 of register 0x00 (reset) should
856 * FIXME: is the following comment outdated? -jgarzik
857 * Probing of AC97 in this way is not reliable, it is not even SAFE !!
859 if ((audio = codec->codec_read(codec, AC97_RESET)) & 0x8000) {
860 printk(KERN_ERR "ac97_codec: %s ac97 codec not present\n",
861 (codec->id & 0x2) ? (codec->id&1 ? "4th" : "Tertiary")
862 : (codec->id&1 ? "Secondary": "Primary"));
866 /* probe for Modem Codec */
867 codec->modem = ac97_check_modem(codec);
870 f = codec->codec_read(codec, AC97_EXTENDED_STATUS);
871 if((codec->codec_ops == &null_ops) && (f & 4))
872 codec->codec_ops = &default_digital_ops;
874 /* A device which thinks its a modem but isnt */
875 if(codec->flags & AC97_DELUDED_MODEM)
878 if (codec->name == NULL)
879 codec->name = "Unknown";
880 printk(KERN_INFO "ac97_codec: AC97 %s codec, id: %s (%s)\n",
881 codec->modem ? "Modem" : (audio ? "Audio" : ""),
882 codec_id(id1, id2, cidbuf), codec->name);
884 if(!ac97_init_mixer(codec))
888 * Attach last so the caller can override the mixer
893 list_add(&codec->list, &codecs);
895 list_for_each(l, &codec_drivers) {
896 d = list_entry(l, struct ac97_driver, list);
897 if ((codec->model ^ d->codec_id) & d->codec_mask)
899 if(d->probe(codec, d) == 0)
910 static int ac97_init_mixer(struct ac97_codec *codec)
915 cap = codec->codec_read(codec, AC97_RESET);
918 codec->supported_mixers = AC97_SUPPORTED_MASK;
919 codec->stereo_mixers = AC97_STEREO_MASK;
920 codec->record_sources = AC97_RECORD_MASK;
922 codec->supported_mixers &= ~(SOUND_MASK_BASS|SOUND_MASK_TREBLE);
924 codec->supported_mixers &= ~SOUND_MASK_ALTPCM;
927 /* detect bit resolution */
928 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, 0x2020);
929 if(codec->codec_read(codec, AC97_MASTER_VOL_STEREO) == 0x2020)
930 codec->bit_resolution = 6;
932 codec->bit_resolution = 5;
934 /* generic OSS to AC97 wrapper */
935 codec->read_mixer = ac97_read_mixer;
936 codec->write_mixer = ac97_write_mixer;
937 codec->recmask_io = ac97_recmask_io;
938 codec->mixer_ioctl = ac97_mixer_ioctl;
940 /* initialize mixer channel volumes */
941 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
942 struct mixer_defaults *md = &mixer_defaults[i];
945 if (!supported_mixer(codec, md->mixer))
947 ac97_set_mixer(codec, md->mixer, md->value);
950 /* codec specific initialization for 4-6 channel output or secondary codec stuff */
951 if (codec->codec_ops->init != NULL) {
952 codec->codec_ops->init(codec);
956 * Volume is MUTE only on this device. We have to initialise
957 * it but its useless beyond that.
959 if(codec->flags & AC97_NO_PCM_VOLUME)
961 codec->supported_mixers &= ~SOUND_MASK_PCM;
962 printk(KERN_WARNING "AC97 codec does not have proper volume support.\n");
967 #define AC97_SIGMATEL_ANALOG 0x6c /* Analog Special */
968 #define AC97_SIGMATEL_DAC2INVERT 0x6e
969 #define AC97_SIGMATEL_BIAS1 0x70
970 #define AC97_SIGMATEL_BIAS2 0x72
971 #define AC97_SIGMATEL_MULTICHN 0x74 /* Multi-Channel programming */
972 #define AC97_SIGMATEL_CIC1 0x76
973 #define AC97_SIGMATEL_CIC2 0x78
976 static int sigmatel_9708_init(struct ac97_codec * codec)
978 u16 codec72, codec6c;
980 codec72 = codec->codec_read(codec, AC97_SIGMATEL_BIAS2) & 0x8000;
981 codec6c = codec->codec_read(codec, AC97_SIGMATEL_ANALOG);
983 if ((codec72==0) && (codec6c==0)) {
984 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
985 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1000);
986 codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
987 codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0007);
988 } else if ((codec72==0x8000) && (codec6c==0)) {
989 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
990 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1001);
991 codec->codec_write(codec, AC97_SIGMATEL_DAC2INVERT, 0x0008);
992 } else if ((codec72==0x8000) && (codec6c==0x0080)) {
995 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
1000 static int sigmatel_9721_init(struct ac97_codec * codec)
1002 /* Only set up secondary codec */
1006 codec->codec_write(codec, AC97_SURROUND_MASTER, 0L);
1008 /* initialize SigmaTel STAC9721/23 as secondary codec, decoding AC link
1009 sloc 3,4 = 0x01, slot 7,8 = 0x00, */
1010 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x00);
1012 /* we don't have the crystal when we are on an AMR card, so use
1013 BIT_CLK as our clock source. Write the magic word ABBA and read
1014 back to enable register 0x78 */
1015 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
1016 codec->codec_read(codec, AC97_SIGMATEL_CIC1);
1018 /* sync all the clocks*/
1019 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x3802);
1025 static int sigmatel_9744_init(struct ac97_codec * codec)
1027 // patch for SigmaTel
1028 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
1029 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x0000); // is this correct? --jk
1030 codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
1031 codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0002);
1032 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
1036 static int cmedia_init(struct ac97_codec *codec)
1038 /* Initialise the CMedia 9739 */
1040 We could set various options here
1041 Register 0x20 bit 0x100 sets mic as center bass
1042 Also do multi_channel_ctrl &=~0x3000 |=0x1000
1044 For now we set up the GPIO and PC beep
1050 codec->codec_write(codec, 0x64, 0x3000);
1051 v = codec->codec_read(codec, 0x64);
1053 codec->codec_write(codec, 0x64, v);
1054 codec->codec_write(codec, 0x70, 0x0100);
1055 codec->codec_write(codec, 0x72, 0x0020);
1059 #define AC97_WM97XX_FMIXER_VOL 0x72
1060 #define AC97_WM97XX_RMIXER_VOL 0x74
1061 #define AC97_WM97XX_TEST 0x5a
1062 #define AC97_WM9704_RPCM_VOL 0x70
1063 #define AC97_WM9711_OUT3VOL 0x16
1065 static int wolfson_init03(struct ac97_codec * codec)
1067 /* this is known to work for the ViewSonic ViewPad 1000 */
1068 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1069 codec->codec_write(codec, AC97_GENERAL_PURPOSE, 0x8000);
1073 static int wolfson_init04(struct ac97_codec * codec)
1075 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1076 codec->codec_write(codec, AC97_WM97XX_RMIXER_VOL, 0x0808);
1078 // patch for DVD noise
1079 codec->codec_write(codec, AC97_WM97XX_TEST, 0x0200);
1081 // init vol as PCM vol
1082 codec->codec_write(codec, AC97_WM9704_RPCM_VOL,
1083 codec->codec_read(codec, AC97_PCMOUT_VOL));
1085 /* set rear surround volume */
1086 codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
1090 /* WM9705, WM9710 */
1091 static int wolfson_init05(struct ac97_codec * codec)
1093 /* set front mixer volume */
1094 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1098 /* WM9711, WM9712 */
1099 static int wolfson_init11(struct ac97_codec * codec)
1101 /* stop pop's during suspend/resume */
1102 codec->codec_write(codec, AC97_WM97XX_TEST,
1103 codec->codec_read(codec, AC97_WM97XX_TEST) & 0xffbf);
1105 /* set out3 volume */
1106 codec->codec_write(codec, AC97_WM9711_OUT3VOL, 0x0808);
1111 static int wolfson_init13(struct ac97_codec * codec)
1113 codec->codec_write(codec, AC97_RECORD_GAIN, 0x00a0);
1114 codec->codec_write(codec, AC97_POWER_CONTROL, 0x0000);
1115 codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0xDA00);
1116 codec->codec_write(codec, AC97_EXTEND_MODEM_STAT, 0x3810);
1117 codec->codec_write(codec, AC97_PHONE_VOL, 0x0808);
1118 codec->codec_write(codec, AC97_PCBEEP_VOL, 0x0808);
1123 static int tritech_init(struct ac97_codec * codec)
1125 codec->codec_write(codec, 0x26, 0x0300);
1126 codec->codec_write(codec, 0x26, 0x0000);
1127 codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
1128 codec->codec_write(codec, AC97_RESERVED_3A, 0x0000);
1133 /* copied from drivers/sound/maestro.c */
1134 static int tritech_maestro_init(struct ac97_codec * codec)
1136 /* no idea what this does */
1137 codec->codec_write(codec, 0x2A, 0x0001);
1138 codec->codec_write(codec, 0x2C, 0x0000);
1139 codec->codec_write(codec, 0x2C, 0XFFFF);
1146 * Presario700 workaround
1147 * for Jack Sense/SPDIF Register mis-setting causing
1149 * by Santiago Nullo 04/05/2002
1152 #define AC97_AD1886_JACK_SENSE 0x72
1154 static int ad1886_init(struct ac97_codec * codec)
1156 /* from AD1886 Specs */
1157 codec->codec_write(codec, AC97_AD1886_JACK_SENSE, 0x0010);
1165 * This is basically standard AC97. It should work as a default for
1166 * almost all modern codecs. Note that some cards wire EAPD *backwards*
1167 * That side of it is up to the card driver not us to cope with.
1171 static int eapd_control(struct ac97_codec * codec, int on)
1174 codec->codec_write(codec, AC97_POWER_CONTROL,
1175 codec->codec_read(codec, AC97_POWER_CONTROL)|0x8000);
1177 codec->codec_write(codec, AC97_POWER_CONTROL,
1178 codec->codec_read(codec, AC97_POWER_CONTROL)&~0x8000);
1182 static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1186 reg = codec->codec_read(codec, AC97_SPDIF_CONTROL);
1190 /* Off by default */
1193 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1194 codec->codec_write(codec, AC97_EXTENDED_STATUS, (reg & ~AC97_EA_SPDIF));
1199 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K;
1202 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K;
1205 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K;
1209 reg &= ~AC97_SC_CC_MASK;
1210 reg |= (mode & AUDIO_CCMASK) << 6;
1212 if(mode & AUDIO_DIGITAL)
1214 if(mode & AUDIO_PRO)
1216 if(mode & AUDIO_DRS)
1219 codec->codec_write(codec, AC97_SPDIF_CONTROL, reg);
1221 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1222 reg &= (AC97_EA_SLOT_MASK);
1223 reg |= AC97_EA_VRA | AC97_EA_SPDIF | slots;
1224 codec->codec_write(codec, AC97_EXTENDED_STATUS, reg);
1226 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1229 codec->codec_write(codec, AC97_EXTENDED_STATUS, reg & ~ AC97_EA_SPDIF);
1236 * Crystal digital audio control (CS4299)
1239 static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1243 if(mode & AUDIO_DIGITAL)
1248 case 0: cv = 0x0; break; /* SPEN off */
1249 case 48000: cv = 0x8004; break; /* 48KHz digital */
1250 case 44100: cv = 0x8104; break; /* 44.1KHz digital */
1251 case 32768: /* 32Khz */
1255 codec->codec_write(codec, 0x68, cv);
1260 * CMedia digital audio control
1264 static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1268 if(mode & AUDIO_DIGITAL)
1273 case 0: cv = 0x0001; break; /* SPEN off */
1274 case 48000: cv = 0x0009; break; /* 48KHz digital */
1278 codec->codec_write(codec, 0x2A, 0x05c4);
1279 codec->codec_write(codec, 0x6C, cv);
1281 /* Switch on mix to surround */
1282 cv = codec->codec_read(codec, 0x64);
1286 codec->codec_write(codec, 0x64, cv);
1291 /* copied from drivers/sound/maestro.c */
1292 #if 0 /* there has been 1 person on the planet with a pt101 that we
1293 know of. If they care, they can put this back in :) */
1294 static int pt101_init(struct ac97_codec * codec)
1296 printk(KERN_INFO "ac97_codec: PT101 Codec detected, initializing but _not_ installing mixer device.\n");
1298 codec->codec_write(codec, 0x2A, 0x0001);
1299 codec->codec_write(codec, 0x2C, 0x0000);
1300 codec->codec_write(codec, 0x2C, 0xFFFF);
1301 codec->codec_write(codec, 0x10, 0x9F1F);
1302 codec->codec_write(codec, 0x12, 0x0808);
1303 codec->codec_write(codec, 0x14, 0x9F1F);
1304 codec->codec_write(codec, 0x16, 0x9F1F);
1305 codec->codec_write(codec, 0x18, 0x0404);
1306 codec->codec_write(codec, 0x1A, 0x0000);
1307 codec->codec_write(codec, 0x1C, 0x0000);
1308 codec->codec_write(codec, 0x02, 0x0404);
1309 codec->codec_write(codec, 0x04, 0x0808);
1310 codec->codec_write(codec, 0x0C, 0x801F);
1311 codec->codec_write(codec, 0x0E, 0x801F);
1317 EXPORT_SYMBOL(ac97_read_proc);
1318 EXPORT_SYMBOL(ac97_probe_codec);
1321 * AC97 library support routines
1325 * ac97_set_dac_rate - set codec rate adaption
1327 * @rate: rate in hertz
1329 * Set the DAC rate. Assumes the codec supports VRA. The caller is
1330 * expected to have checked this little detail.
1333 unsigned int ac97_set_dac_rate(struct ac97_codec *codec, unsigned int rate)
1335 unsigned int new_rate = rate;
1337 u32 mast_vol, phone_vol, mono_vol, pcm_vol;
1338 u32 mute_vol = 0x8000; /* The mute volume? */
1340 if(rate != codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE))
1342 /* Mute several registers */
1343 mast_vol = codec->codec_read(codec, AC97_MASTER_VOL_STEREO);
1344 mono_vol = codec->codec_read(codec, AC97_MASTER_VOL_MONO);
1345 phone_vol = codec->codec_read(codec, AC97_HEADPHONE_VOL);
1346 pcm_vol = codec->codec_read(codec, AC97_PCMOUT_VOL);
1347 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mute_vol);
1348 codec->codec_write(codec, AC97_MASTER_VOL_MONO, mute_vol);
1349 codec->codec_write(codec, AC97_HEADPHONE_VOL, mute_vol);
1350 codec->codec_write(codec, AC97_PCMOUT_VOL, mute_vol);
1352 /* Power down the DAC */
1353 dacp=codec->codec_read(codec, AC97_POWER_CONTROL);
1354 codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0200);
1355 /* Load the rate and read the effective rate */
1356 codec->codec_write(codec, AC97_PCM_FRONT_DAC_RATE, rate);
1357 new_rate=codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE);
1358 /* Power it back up */
1359 codec->codec_write(codec, AC97_POWER_CONTROL, dacp);
1361 /* Restore volumes */
1362 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mast_vol);
1363 codec->codec_write(codec, AC97_MASTER_VOL_MONO, mono_vol);
1364 codec->codec_write(codec, AC97_HEADPHONE_VOL, phone_vol);
1365 codec->codec_write(codec, AC97_PCMOUT_VOL, pcm_vol);
1370 EXPORT_SYMBOL(ac97_set_dac_rate);
1373 * ac97_set_adc_rate - set codec rate adaption
1375 * @rate: rate in hertz
1377 * Set the ADC rate. Assumes the codec supports VRA. The caller is
1378 * expected to have checked this little detail.
1381 unsigned int ac97_set_adc_rate(struct ac97_codec *codec, unsigned int rate)
1383 unsigned int new_rate = rate;
1386 if(rate != codec->codec_read(codec, AC97_PCM_LR_ADC_RATE))
1388 /* Power down the ADC */
1389 dacp=codec->codec_read(codec, AC97_POWER_CONTROL);
1390 codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0100);
1391 /* Load the rate and read the effective rate */
1392 codec->codec_write(codec, AC97_PCM_LR_ADC_RATE, rate);
1393 new_rate=codec->codec_read(codec, AC97_PCM_LR_ADC_RATE);
1394 /* Power it back up */
1395 codec->codec_write(codec, AC97_POWER_CONTROL, dacp);
1400 EXPORT_SYMBOL(ac97_set_adc_rate);
1402 int ac97_save_state(struct ac97_codec *codec)
1407 EXPORT_SYMBOL(ac97_save_state);
1409 int ac97_restore_state(struct ac97_codec *codec)
1412 unsigned int left, right, val;
1414 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
1415 if (!supported_mixer(codec, i))
1418 val = codec->mixer_state[i];
1421 codec->write_mixer(codec, i, left, right);
1426 EXPORT_SYMBOL(ac97_restore_state);
1429 * ac97_register_driver - register a codec helper
1430 * @driver: Driver handler
1432 * Register a handler for codecs matching the codec id. The handler
1433 * attach function is called for all present codecs and will be
1434 * called when new codecs are discovered.
1437 int ac97_register_driver(struct ac97_driver *driver)
1439 struct list_head *l;
1440 struct ac97_codec *c;
1443 INIT_LIST_HEAD(&driver->list);
1444 list_add(&driver->list, &codec_drivers);
1446 list_for_each(l, &codecs)
1448 c = list_entry(l, struct ac97_codec, list);
1449 if(c->driver != NULL || ((c->model ^ driver->codec_id) & driver->codec_mask))
1451 if(driver->probe(c, driver))
1459 EXPORT_SYMBOL_GPL(ac97_register_driver);
1462 * ac97_unregister_driver - unregister a codec helper
1463 * @driver: Driver handler
1465 * Unregister a handler for codecs matching the codec id. The handler
1466 * remove function is called for all matching codecs.
1469 void ac97_unregister_driver(struct ac97_driver *driver)
1471 struct list_head *l;
1472 struct ac97_codec *c;
1475 list_del_init(&driver->list);
1477 list_for_each(l, &codecs)
1479 c = list_entry(l, struct ac97_codec, list);
1480 if (c->driver == driver) {
1481 driver->remove(c, driver);
1489 EXPORT_SYMBOL_GPL(ac97_unregister_driver);
1491 static int swap_headphone(int remove_master)
1493 struct list_head *l;
1494 struct ac97_codec *c;
1496 if (remove_master) {
1498 list_for_each(l, &codecs)
1500 c = list_entry(l, struct ac97_codec, list);
1501 if (supported_mixer(c, SOUND_MIXER_PHONEOUT))
1502 c->supported_mixers &= ~SOUND_MASK_PHONEOUT;
1506 ac97_hw[SOUND_MIXER_PHONEOUT].offset = AC97_MASTER_VOL_STEREO;
1508 /* Scale values already match */
1509 ac97_hw[SOUND_MIXER_VOLUME].offset = AC97_MASTER_VOL_MONO;
1513 static int apply_quirk(int quirk)
1516 case AC97_TUNE_NONE:
1518 case AC97_TUNE_HP_ONLY:
1519 return swap_headphone(1);
1520 case AC97_TUNE_SWAP_HP:
1521 return swap_headphone(0);
1522 case AC97_TUNE_SWAP_SURROUND:
1523 return -ENOSYS; /* not yet implemented */
1524 case AC97_TUNE_AD_SHARING:
1525 return -ENOSYS; /* not yet implemented */
1526 case AC97_TUNE_ALC_JACK:
1527 return -ENOSYS; /* not yet implemented */
1533 * ac97_tune_hardware - tune up the hardware
1534 * @pdev: pci_dev pointer
1535 * @quirk: quirk list
1536 * @override: explicit quirk value (overrides if not AC97_TUNE_DEFAULT)
1538 * Do some workaround for each pci device, such as renaming of the
1539 * headphone (true line-out) control as "Master".
1540 * The quirk-list must be terminated with a zero-filled entry.
1542 * Returns zero if successful, or a negative error code on failure.
1545 int ac97_tune_hardware(struct pci_dev *pdev, struct ac97_quirk *quirk, int override)
1552 if (override != AC97_TUNE_DEFAULT) {
1553 result = apply_quirk(override);
1555 printk(KERN_ERR "applying quirk type %d failed (%d)\n", override, result);
1559 for (; quirk->vendor; quirk++) {
1560 if (quirk->vendor != pdev->subsystem_vendor)
1562 if ((! quirk->mask && quirk->device == pdev->subsystem_device) ||
1563 quirk->device == (quirk->mask & pdev->subsystem_device)) {
1565 printk("ac97 quirk for %s (%04x:%04x)\n", quirk->name, ac97->subsystem_vendor, pdev->subsystem_device);
1567 result = apply_quirk(quirk->type);
1569 printk(KERN_ERR "applying quirk type %d for %s failed (%d)\n", quirk->type, quirk->name, result);
1576 EXPORT_SYMBOL_GPL(ac97_tune_hardware);
1578 MODULE_LICENSE("GPL");