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inotify: fix race
[linux-2.6.22.y-op.git] / sound / oss / ac97_codec.c
blobfef56cac06c832650db596299af04185dc9919dc
1 /*
2 * ac97_codec.c: Generic AC97 mixer/modem module
3 *
4 * Derived from ac97 mixer in maestro and trident driver.
5 *
6 * Copyright 2000 Silicon Integrated System Corporation
7 *
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.
12 *
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.
17 *
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.
21 *
22 **************************************************************************
23 *
24 * The Intel Audio Codec '97 specification is available at the Intel
25 * audio homepage: http://developer.intel.com/ial/scalableplatforms/audio/
26 *
27 * The specification itself is currently available at:
28 * ftp://download.intel.com/ial/scalableplatforms/ac97r22.pdf
29 *
30 **************************************************************************
31 *
32 * History
33 * May 02, 2003 Liam Girdwood <liam.girdwood@wolfsonmicro.com>
34 * Removed non existant WM9700
35 * Added support for WM9705, WM9708, WM9709, WM9710, WM9711
36 * WM9712 and WM9717
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
47 */
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 <linux/mutex.h>
59
60 #define CODEC_ID_BUFSZ 14
61
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);
68
69 static int ac97_init_mixer(struct ac97_codec *codec);
70
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);
87
88
89 /*
90 * AC97 operations.
91 *
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
95 *
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)
100 *
101 * Not all codecs support all features, not all drivers use all the
102 * operations yet
103 */
104
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};
122
123 /* sorted by vendor/device id */
124 static const struct {
125 u32 id;
126 char *name;
127 struct ac97_ops *ops;
128 int flags;
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},
190 };
191
192 static const char *ac97_stereo_enhancements[] =
193 {
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"
226 };
227
228 /* this table has default mixer values for all OSS mixers. */
229 static struct mixer_defaults {
230 int mixer;
231 unsigned int value;
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},
248 {-1,0}
249 };
250
251 /* table to scale scale from OSS mixer value to AC97 mixer register value */
252 static struct ac97_mixer_hw {
253 unsigned char offset;
254 int scale;
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},
270 };
271
272 /* the following tables allow us to go from OSS <-> ac97 quickly. */
273 enum ac97_recsettings {
274 AC97_REC_MIC=0,
275 AC97_REC_CD,
276 AC97_REC_VIDEO,
277 AC97_REC_AUX,
278 AC97_REC_LINE,
279 AC97_REC_STEREO, /* combination of all enabled outputs.. */
280 AC97_REC_MONO, /*.. or the mono equivalent */
281 AC97_REC_PHONE
282 };
283
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
292 };
293
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
303 };
304
305 static LIST_HEAD(codecs);
306 static LIST_HEAD(codec_drivers);
307 static DEFINE_MUTEX(codec_mutex);
308
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)
312 {
313 u16 val;
314 int ret = 0;
315 int scale;
316 struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
317
318 val = codec->codec_read(codec , mh->offset);
319
320 if (val & AC97_MUTE) {
321 ret = 0;
322 } else if (AC97_STEREO_MASK & (1 << oss_channel)) {
323 /* nice stereo mixers .. */
324 int left,right;
325
326 left = (val >> 8) & 0x7f;
327 right = val & 0x7f;
328
329 if (oss_channel == SOUND_MIXER_IGAIN) {
330 right = (right * 100) / mh->scale;
331 left = (left * 100) / mh->scale;
332 } else {
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);
336 else
337 scale = mh->scale;
338
339 right = 100 - ((right * 100) / scale);
340 left = 100 - ((left * 100) / scale);
341 }
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);
358 }
359
360 #ifdef DEBUG
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);
365 #endif
366
367 return ret;
368 }
369
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)
374 {
375 u16 val = 0;
376 int scale;
377 struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
378
379 #ifdef DEBUG
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);
384 #endif
385
386 if (AC97_STEREO_MASK & (1 << oss_channel)) {
387 /* stereo mixers */
388 if (left == 0 && right == 0) {
389 val = AC97_MUTE;
390 } else {
391 if (oss_channel == SOUND_MIXER_IGAIN) {
392 right = (right * mh->scale) / 100;
393 left = (left * mh->scale) / 100;
394 if (right >= mh->scale)
395 right = mh->scale-1;
396 if (left >= mh->scale)
397 left = mh->scale-1;
398 } else {
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);
403 else
404 scale = mh->scale;
405
406 right = ((100 - right) * scale) / 100;
407 left = ((100 - left) * scale) / 100;
408 if (right >= scale)
409 right = scale-1;
410 if (left >= scale)
411 left = scale-1;
412 }
413 val = (left << 8) | right;
414 }
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)
419 left = mh->scale-1;
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)
425 left = mh->scale-1;
426 val |= left & 0x000e;
427 } else if(left == 0) {
428 val = AC97_MUTE;
429 } else if (oss_channel == SOUND_MIXER_SPEAKER) {
430 left = ((100 - left) * mh->scale) / 100;
431 if (left >= mh->scale)
432 left = mh->scale-1;
433 val = left << 1;
434 } else if (oss_channel == SOUND_MIXER_PHONEIN) {
435 left = ((100 - left) * mh->scale) / 100;
436 if (left >= mh->scale)
437 left = mh->scale-1;
438 val = left;
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)
443 left = mh->scale-1;
444 val = left;
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)
449 left = mh->scale-1;
450 val |= left;
451 /* the low bit is optional in the tone sliders and masking
452 it lets us avoid the 0xf 'bypass'.. */
453 }
454 #ifdef DEBUG
455 printk(" 0x%04x", val);
456 #endif
457
458 codec->codec_write(codec, mh->offset, val);
459
460 #ifdef DEBUG
461 val = codec->codec_read(codec, mh->offset);
462 printk(" -> 0x%04x\n", val);
463 #endif
464 }
465
466 /* a thin wrapper for write_mixer */
467 static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val )
468 {
469 unsigned int left,right;
470
471 /* cleanse input a little */
472 right = ((val >> 8) & 0xff) ;
473 left = (val & 0xff) ;
474
475 if (right > 100) right = 100;
476 if (left > 100) left = 100;
477
478 codec->mixer_state[oss_mixer] = (right << 8) | left;
479 codec->write_mixer(codec, oss_mixer, left, right);
480 }
481
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)
487 {
488 unsigned int val;
489
490 if (rw) {
491 /* read it from the card */
492 val = codec->codec_read(codec, AC97_RECORD_SELECT);
493 #ifdef DEBUG
494 printk("ac97_codec: ac97 recmask to set to 0x%04x\n", val);
495 #endif
496 return (1 << ac97_rm2oss[val & 0x07]);
497 }
498
499 /* else, write the first set in the mask as the
500 output */
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]);
503 if (mask != val)
504 mask &= ~val;
505
506 val = ffs(mask);
507 val = ac97_oss_rm[val-1];
508 val |= val << 8; /* set both channels */
509
510 #ifdef DEBUG
511 printk("ac97_codec: setting ac97 recmask to 0x%04x\n", val);
512 #endif
513
514 codec->codec_write(codec, AC97_RECORD_SELECT, val);
515
516 return 0;
517 };
518
519 static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg)
520 {
521 int i, val = 0;
522
523 if (cmd == SOUND_MIXER_INFO) {
524 mixer_info 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)))
530 return -EFAULT;
531 return 0;
532 }
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)))
539 return -EFAULT;
540 return 0;
541 }
542
543 if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
544 return -EINVAL;
545
546 if (cmd == OSS_GETVERSION)
547 return put_user(SOUND_VERSION, (int __user *)arg);
548
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) {
553 val = 0;
554 } else {
555 val = codec->recmask_io(codec, 1, 0);
556 }
557 break;
558
559 case SOUND_MIXER_DEVMASK: /* give them the supported mixers */
560 val = codec->supported_mixers;
561 break;
562
563 case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
564 val = codec->record_sources;
565 break;
566
567 case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
568 val = codec->stereo_mixers;
569 break;
570
571 case SOUND_MIXER_CAPS:
572 val = SOUND_CAP_EXCL_INPUT;
573 break;
574
575 default: /* read a specific mixer */
576 i = _IOC_NR(cmd);
577
578 if (!supported_mixer(codec, i))
579 return -EINVAL;
580
581 /* do we ever want to touch the hardware? */
582 /* val = codec->read_mixer(codec, i); */
583 val = codec->mixer_state[i];
584 break;
585 }
586 return put_user(val, (int __user *)arg);
587 }
588
589 if (_SIOC_DIR(cmd) == (_SIOC_WRITE|_SIOC_READ)) {
590 codec->modcnt++;
591 if (get_user(val, (int __user *)arg))
592 return -EFAULT;
593
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;
597 if (!val) return 0;
598 if (!(val &= codec->record_sources)) return -EINVAL;
599
600 codec->recmask_io(codec, 0, val);
601
602 return 0;
603 default: /* write a specific mixer */
604 i = _IOC_NR(cmd);
605
606 if (!supported_mixer(codec, i))
607 return -EINVAL;
608
609 ac97_set_mixer(codec, i, val);
610
611 return 0;
612 }
613 }
614 return -EINVAL;
615 }
616
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)
620 {
621 int len = 0, cap, extid, val, id1, id2;
622 struct ac97_codec *codec;
623 int is_ac97_20 = 0;
624
625 if ((codec = data) == NULL)
626 return -ENODEV;
627
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);
632
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;
638
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-" : "");
647 val = cap & 0x00c0;
648 len += sprintf (page+len, "DAC resolutions :%s%s%s\n",
649 " -16-bit-",
650 val & 0x0040 ? " -18-bit-" : "",
651 val & 0x0080 ? " -20-bit-" : "");
652 val = cap & 0x0300;
653 len += sprintf (page+len, "ADC resolutions :%s%s%s\n",
654 " -16-bit-",
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]);
659
660 val = codec->codec_read(codec, AC97_GENERAL_PURPOSE);
661 len += sprintf (page+len, "POP path : %s 3D\n"
662 "Sim. stereo : %s\n"
663 "3D enhancement : %s\n"
664 "Loudness : %s\n"
665 "Mono output : %s\n"
666 "MIC select : %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");
675
676 extid = codec->codec_read(codec, AC97_EXTENDED_ID);
677 cap = extid;
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-" : "");
686 if (is_ac97_20) {
687 len += sprintf (page+len, "Front DAC rate : %d\n",
688 codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE));
689 }
690
691 return len;
692 }
693
694 /**
695 * codec_id - Turn id1/id2 into a PnP string
696 * @id1: Vendor ID1
697 * @id2: Vendor ID2
698 * @buf: CODEC_ID_BUFSZ byte buffer
699 *
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.
702 */
703
704 static char *codec_id(u16 id1, u16 id2, char *buf)
705 {
706 if(id1&0x8080) {
707 snprintf(buf, CODEC_ID_BUFSZ, "0x%04x:0x%04x", id1, id2);
708 } else {
709 buf[0] = (id1 >> 8);
710 buf[1] = (id1 & 0xFF);
711 buf[2] = (id2 >> 8);
712 snprintf(buf+3, CODEC_ID_BUFSZ - 3, "%d", id2&0xFF);
713 }
714 return buf;
715 }
716
717 /**
718 * ac97_check_modem - Check if the Codec is a modem
719 * @codec: codec to check
720 *
721 * Return true if the device is an AC97 1.0 or AC97 2.0 modem
722 */
723
724 static int ac97_check_modem(struct ac97_codec *codec)
725 {
726 /* Check for an AC97 1.0 soft modem (ID1) */
727 if(codec->codec_read(codec, AC97_RESET) & 2)
728 return 1;
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)
732 return 1;
733 return 0;
734 }
735
736
737 /**
738 * ac97_alloc_codec - Allocate an AC97 codec
739 *
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.
743 */
744
745 struct ac97_codec *ac97_alloc_codec(void)
746 {
747 struct ac97_codec *codec = kzalloc(sizeof(struct ac97_codec), GFP_KERNEL);
748 if(!codec)
749 return NULL;
750
751 spin_lock_init(&codec->lock);
752 INIT_LIST_HEAD(&codec->list);
753 return codec;
754 }
755
756 EXPORT_SYMBOL(ac97_alloc_codec);
757
758 /**
759 * ac97_release_codec - Release an AC97 codec
760 * @codec: codec to release
761 *
762 * Release an allocated AC97 codec. This will be refcounted in
763 * time but for the moment is trivial. Calls the unregister
764 * handler if the codec is now defunct.
765 */
766
767 void ac97_release_codec(struct ac97_codec *codec)
768 {
769 /* Remove from the list first, we don't want to be
770 "rediscovered" */
771 mutex_lock(&codec_mutex);
772 list_del(&codec->list);
773 mutex_unlock(&codec_mutex);
774 /*
775 * The driver needs to deal with internal
776 * locking to avoid accidents here.
777 */
778 if(codec->driver)
779 codec->driver->remove(codec, codec->driver);
780 kfree(codec);
781 }
782
783 EXPORT_SYMBOL(ac97_release_codec);
784
785 /**
786 * ac97_probe_codec - Initialize and setup AC97-compatible codec
787 * @codec: (in/out) Kernel info for a single AC97 codec
788 *
789 * Reset the AC97 codec, then initialize the mixer and
790 * the rest of the @codec structure.
791 *
792 * The codec_read and codec_write fields of @codec are
793 * required to be setup and working when this function
794 * is called. All other fields are set by this function.
795 *
796 * codec_wait field of @codec can optionally be provided
797 * when calling this function. If codec_wait is not %NULL,
798 * this function will call codec_wait any time it is
799 * necessary to wait for the audio chip to reach the
800 * codec-ready state. If codec_wait is %NULL, then
801 * the default behavior is to call schedule_timeout.
802 * Currently codec_wait is used to wait for AC97 codec
803 * reset to complete.
804 *
805 * Some codecs will power down when a register reset is
806 * performed. We now check for such codecs.
807 *
808 * Returns 1 (true) on success, or 0 (false) on failure.
809 */
810
811 int ac97_probe_codec(struct ac97_codec *codec)
812 {
813 u16 id1, id2;
814 u16 audio;
815 int i;
816 char cidbuf[CODEC_ID_BUFSZ];
817 u16 f;
818 struct list_head *l;
819 struct ac97_driver *d;
820
821 /* wait for codec-ready state */
822 if (codec->codec_wait)
823 codec->codec_wait(codec);
824 else
825 udelay(10);
826
827 /* will the codec power down if register reset ? */
828 id1 = codec->codec_read(codec, AC97_VENDOR_ID1);
829 id2 = codec->codec_read(codec, AC97_VENDOR_ID2);
830 codec->name = NULL;
831 codec->codec_ops = &null_ops;
832 for (i = 0; i < ARRAY_SIZE(ac97_codec_ids); i++) {
833 if (ac97_codec_ids[i].id == ((id1 << 16) | id2)) {
834 codec->type = ac97_codec_ids[i].id;
835 codec->name = ac97_codec_ids[i].name;
836 codec->codec_ops = ac97_codec_ids[i].ops;
837 codec->flags = ac97_codec_ids[i].flags;
838 break;
839 }
840 }
841
842 codec->model = (id1 << 16) | id2;
843 if ((codec->flags & AC97_DEFAULT_POWER_OFF) == 0) {
844 /* reset codec and wait for the ready bit before we continue */
845 codec->codec_write(codec, AC97_RESET, 0L);
846 if (codec->codec_wait)
847 codec->codec_wait(codec);
848 else
849 udelay(10);
850 }
851
852 /* probing AC97 codec, AC97 2.0 says that bit 15 of register 0x00 (reset) should
853 * be read zero.
854 *
855 * FIXME: is the following comment outdated? -jgarzik
856 * Probing of AC97 in this way is not reliable, it is not even SAFE !!
857 */
858 if ((audio = codec->codec_read(codec, AC97_RESET)) & 0x8000) {
859 printk(KERN_ERR "ac97_codec: %s ac97 codec not present\n",
860 (codec->id & 0x2) ? (codec->id&1 ? "4th" : "Tertiary")
861 : (codec->id&1 ? "Secondary": "Primary"));
862 return 0;
863 }
864
865 /* probe for Modem Codec */
866 codec->modem = ac97_check_modem(codec);
867
868 /* enable SPDIF */
869 f = codec->codec_read(codec, AC97_EXTENDED_STATUS);
870 if((codec->codec_ops == &null_ops) && (f & 4))
871 codec->codec_ops = &default_digital_ops;
872
873 /* A device which thinks its a modem but isnt */
874 if(codec->flags & AC97_DELUDED_MODEM)
875 codec->modem = 0;
876
877 if (codec->name == NULL)
878 codec->name = "Unknown";
879 printk(KERN_INFO "ac97_codec: AC97 %s codec, id: %s (%s)\n",
880 codec->modem ? "Modem" : (audio ? "Audio" : ""),
881 codec_id(id1, id2, cidbuf), codec->name);
882
883 if(!ac97_init_mixer(codec))
884 return 0;
885
886 /*
887 * Attach last so the caller can override the mixer
888 * callbacks.
889 */
890
891 mutex_lock(&codec_mutex);
892 list_add(&codec->list, &codecs);
893
894 list_for_each(l, &codec_drivers) {
895 d = list_entry(l, struct ac97_driver, list);
896 if ((codec->model ^ d->codec_id) & d->codec_mask)
897 continue;
898 if(d->probe(codec, d) == 0)
899 {
900 codec->driver = d;
901 break;
902 }
903 }
904
905 mutex_unlock(&codec_mutex);
906 return 1;
907 }
908
909 static int ac97_init_mixer(struct ac97_codec *codec)
910 {
911 u16 cap;
912 int i;
913
914 cap = codec->codec_read(codec, AC97_RESET);
915
916 /* mixer masks */
917 codec->supported_mixers = AC97_SUPPORTED_MASK;
918 codec->stereo_mixers = AC97_STEREO_MASK;
919 codec->record_sources = AC97_RECORD_MASK;
920 if (!(cap & 0x04))
921 codec->supported_mixers &= ~(SOUND_MASK_BASS|SOUND_MASK_TREBLE);
922 if (!(cap & 0x10))
923 codec->supported_mixers &= ~SOUND_MASK_ALTPCM;
924
925
926 /* detect bit resolution */
927 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, 0x2020);
928 if(codec->codec_read(codec, AC97_MASTER_VOL_STEREO) == 0x2020)
929 codec->bit_resolution = 6;
930 else
931 codec->bit_resolution = 5;
932
933 /* generic OSS to AC97 wrapper */
934 codec->read_mixer = ac97_read_mixer;
935 codec->write_mixer = ac97_write_mixer;
936 codec->recmask_io = ac97_recmask_io;
937 codec->mixer_ioctl = ac97_mixer_ioctl;
938
939 /* initialize mixer channel volumes */
940 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
941 struct mixer_defaults *md = &mixer_defaults[i];
942 if (md->mixer == -1)
943 break;
944 if (!supported_mixer(codec, md->mixer))
945 continue;
946 ac97_set_mixer(codec, md->mixer, md->value);
947 }
948
949 /* codec specific initialization for 4-6 channel output or secondary codec stuff */
950 if (codec->codec_ops->init != NULL) {
951 codec->codec_ops->init(codec);
952 }
953
954 /*
955 * Volume is MUTE only on this device. We have to initialise
956 * it but its useless beyond that.
957 */
958 if(codec->flags & AC97_NO_PCM_VOLUME)
959 {
960 codec->supported_mixers &= ~SOUND_MASK_PCM;
961 printk(KERN_WARNING "AC97 codec does not have proper volume support.\n");
962 }
963 return 1;
964 }
965
966 #define AC97_SIGMATEL_ANALOG 0x6c /* Analog Special */
967 #define AC97_SIGMATEL_DAC2INVERT 0x6e
968 #define AC97_SIGMATEL_BIAS1 0x70
969 #define AC97_SIGMATEL_BIAS2 0x72
970 #define AC97_SIGMATEL_MULTICHN 0x74 /* Multi-Channel programming */
971 #define AC97_SIGMATEL_CIC1 0x76
972 #define AC97_SIGMATEL_CIC2 0x78
973
974
975 static int sigmatel_9708_init(struct ac97_codec * codec)
976 {
977 u16 codec72, codec6c;
978
979 codec72 = codec->codec_read(codec, AC97_SIGMATEL_BIAS2) & 0x8000;
980 codec6c = codec->codec_read(codec, AC97_SIGMATEL_ANALOG);
981
982 if ((codec72==0) && (codec6c==0)) {
983 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
984 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1000);
985 codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
986 codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0007);
987 } else if ((codec72==0x8000) && (codec6c==0)) {
988 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
989 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1001);
990 codec->codec_write(codec, AC97_SIGMATEL_DAC2INVERT, 0x0008);
991 } else if ((codec72==0x8000) && (codec6c==0x0080)) {
992 /* nothing */
993 }
994 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
995 return 0;
996 }
997
998
999 static int sigmatel_9721_init(struct ac97_codec * codec)
1000 {
1001 /* Only set up secondary codec */
1002 if (codec->id == 0)
1003 return 0;
1004
1005 codec->codec_write(codec, AC97_SURROUND_MASTER, 0L);
1006
1007 /* initialize SigmaTel STAC9721/23 as secondary codec, decoding AC link
1008 sloc 3,4 = 0x01, slot 7,8 = 0x00, */
1009 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x00);
1010
1011 /* we don't have the crystal when we are on an AMR card, so use
1012 BIT_CLK as our clock source. Write the magic word ABBA and read
1013 back to enable register 0x78 */
1014 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
1015 codec->codec_read(codec, AC97_SIGMATEL_CIC1);
1016
1017 /* sync all the clocks*/
1018 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x3802);
1019
1020 return 0;
1021 }
1022
1023
1024 static int sigmatel_9744_init(struct ac97_codec * codec)
1025 {
1026 // patch for SigmaTel
1027 codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
1028 codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x0000); // is this correct? --jk
1029 codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
1030 codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0002);
1031 codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
1032 return 0;
1033 }
1034
1035 static int cmedia_init(struct ac97_codec *codec)
1036 {
1037 /* Initialise the CMedia 9739 */
1038 /*
1039 We could set various options here
1040 Register 0x20 bit 0x100 sets mic as center bass
1041 Also do multi_channel_ctrl &=~0x3000 |=0x1000
1042
1043 For now we set up the GPIO and PC beep
1044 */
1045
1046 u16 v;
1047
1048 /* MIC */
1049 codec->codec_write(codec, 0x64, 0x3000);
1050 v = codec->codec_read(codec, 0x64);
1051 v &= ~0x8000;
1052 codec->codec_write(codec, 0x64, v);
1053 codec->codec_write(codec, 0x70, 0x0100);
1054 codec->codec_write(codec, 0x72, 0x0020);
1055 return 0;
1056 }
1057
1058 #define AC97_WM97XX_FMIXER_VOL 0x72
1059 #define AC97_WM97XX_RMIXER_VOL 0x74
1060 #define AC97_WM97XX_TEST 0x5a
1061 #define AC97_WM9704_RPCM_VOL 0x70
1062 #define AC97_WM9711_OUT3VOL 0x16
1063
1064 static int wolfson_init03(struct ac97_codec * codec)
1065 {
1066 /* this is known to work for the ViewSonic ViewPad 1000 */
1067 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1068 codec->codec_write(codec, AC97_GENERAL_PURPOSE, 0x8000);
1069 return 0;
1070 }
1071
1072 static int wolfson_init04(struct ac97_codec * codec)
1073 {
1074 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1075 codec->codec_write(codec, AC97_WM97XX_RMIXER_VOL, 0x0808);
1076
1077 // patch for DVD noise
1078 codec->codec_write(codec, AC97_WM97XX_TEST, 0x0200);
1079
1080 // init vol as PCM vol
1081 codec->codec_write(codec, AC97_WM9704_RPCM_VOL,
1082 codec->codec_read(codec, AC97_PCMOUT_VOL));
1083
1084 /* set rear surround volume */
1085 codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
1086 return 0;
1087 }
1088
1089 /* WM9705, WM9710 */
1090 static int wolfson_init05(struct ac97_codec * codec)
1091 {
1092 /* set front mixer volume */
1093 codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
1094 return 0;
1095 }
1096
1097 /* WM9711, WM9712 */
1098 static int wolfson_init11(struct ac97_codec * codec)
1099 {
1100 /* stop pop's during suspend/resume */
1101 codec->codec_write(codec, AC97_WM97XX_TEST,
1102 codec->codec_read(codec, AC97_WM97XX_TEST) & 0xffbf);
1103
1104 /* set out3 volume */
1105 codec->codec_write(codec, AC97_WM9711_OUT3VOL, 0x0808);
1106 return 0;
1107 }
1108
1109 /* WM9713 */
1110 static int wolfson_init13(struct ac97_codec * codec)
1111 {
1112 codec->codec_write(codec, AC97_RECORD_GAIN, 0x00a0);
1113 codec->codec_write(codec, AC97_POWER_CONTROL, 0x0000);
1114 codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0xDA00);
1115 codec->codec_write(codec, AC97_EXTEND_MODEM_STAT, 0x3810);
1116 codec->codec_write(codec, AC97_PHONE_VOL, 0x0808);
1117 codec->codec_write(codec, AC97_PCBEEP_VOL, 0x0808);
1118
1119 return 0;
1120 }
1121
1122 static int tritech_init(struct ac97_codec * codec)
1123 {
1124 codec->codec_write(codec, 0x26, 0x0300);
1125 codec->codec_write(codec, 0x26, 0x0000);
1126 codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
1127 codec->codec_write(codec, AC97_RESERVED_3A, 0x0000);
1128 return 0;
1129 }
1130
1131
1132 /* copied from drivers/sound/maestro.c */
1133 static int tritech_maestro_init(struct ac97_codec * codec)
1134 {
1135 /* no idea what this does */
1136 codec->codec_write(codec, 0x2A, 0x0001);
1137 codec->codec_write(codec, 0x2C, 0x0000);
1138 codec->codec_write(codec, 0x2C, 0XFFFF);
1139 return 0;
1140 }
1141
1142
1143
1144 /*
1145 * Presario700 workaround
1146 * for Jack Sense/SPDIF Register mis-setting causing
1147 * no audible output
1148 * by Santiago Nullo 04/05/2002
1149 */
1150
1151 #define AC97_AD1886_JACK_SENSE 0x72
1152
1153 static int ad1886_init(struct ac97_codec * codec)
1154 {
1155 /* from AD1886 Specs */
1156 codec->codec_write(codec, AC97_AD1886_JACK_SENSE, 0x0010);
1157 return 0;
1158 }
1159
1160
1161
1162
1163 /*
1164 * This is basically standard AC97. It should work as a default for
1165 * almost all modern codecs. Note that some cards wire EAPD *backwards*
1166 * That side of it is up to the card driver not us to cope with.
1167 *
1168 */
1169
1170 static int eapd_control(struct ac97_codec * codec, int on)
1171 {
1172 if(on)
1173 codec->codec_write(codec, AC97_POWER_CONTROL,
1174 codec->codec_read(codec, AC97_POWER_CONTROL)|0x8000);
1175 else
1176 codec->codec_write(codec, AC97_POWER_CONTROL,
1177 codec->codec_read(codec, AC97_POWER_CONTROL)&~0x8000);
1178 return 0;
1179 }
1180
1181 static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1182 {
1183 u16 reg;
1184
1185 reg = codec->codec_read(codec, AC97_SPDIF_CONTROL);
1186
1187 switch(rate)
1188 {
1189 /* Off by default */
1190 default:
1191 case 0:
1192 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1193 codec->codec_write(codec, AC97_EXTENDED_STATUS, (reg & ~AC97_EA_SPDIF));
1194 if(rate == 0)
1195 return 0;
1196 return -EINVAL;
1197 case 1:
1198 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K;
1199 break;
1200 case 2:
1201 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K;
1202 break;
1203 case 3:
1204 reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K;
1205 break;
1206 }
1207
1208 reg &= ~AC97_SC_CC_MASK;
1209 reg |= (mode & AUDIO_CCMASK) << 6;
1210
1211 if(mode & AUDIO_DIGITAL)
1212 reg |= 2;
1213 if(mode & AUDIO_PRO)
1214 reg |= 1;
1215 if(mode & AUDIO_DRS)
1216 reg |= 0x4000;
1217
1218 codec->codec_write(codec, AC97_SPDIF_CONTROL, reg);
1219
1220 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1221 reg &= (AC97_EA_SLOT_MASK);
1222 reg |= AC97_EA_VRA | AC97_EA_SPDIF | slots;
1223 codec->codec_write(codec, AC97_EXTENDED_STATUS, reg);
1224
1225 reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
1226 if(!(reg & 0x0400))
1227 {
1228 codec->codec_write(codec, AC97_EXTENDED_STATUS, reg & ~ AC97_EA_SPDIF);
1229 return -EINVAL;
1230 }
1231 return 0;
1232 }
1233
1234 /*
1235 * Crystal digital audio control (CS4299)
1236 */
1237
1238 static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1239 {
1240 u16 cv;
1241
1242 if(mode & AUDIO_DIGITAL)
1243 return -EINVAL;
1244
1245 switch(rate)
1246 {
1247 case 0: cv = 0x0; break; /* SPEN off */
1248 case 48000: cv = 0x8004; break; /* 48KHz digital */
1249 case 44100: cv = 0x8104; break; /* 44.1KHz digital */
1250 case 32768: /* 32Khz */
1251 default:
1252 return -EINVAL;
1253 }
1254 codec->codec_write(codec, 0x68, cv);
1255 return 0;
1256 }
1257
1258 /*
1259 * CMedia digital audio control
1260 * Needs more work.
1261 */
1262
1263 static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
1264 {
1265 u16 cv;
1266
1267 if(mode & AUDIO_DIGITAL)
1268 return -EINVAL;
1269
1270 switch(rate)
1271 {
1272 case 0: cv = 0x0001; break; /* SPEN off */
1273 case 48000: cv = 0x0009; break; /* 48KHz digital */
1274 default:
1275 return -EINVAL;
1276 }
1277 codec->codec_write(codec, 0x2A, 0x05c4);
1278 codec->codec_write(codec, 0x6C, cv);
1279
1280 /* Switch on mix to surround */
1281 cv = codec->codec_read(codec, 0x64);
1282 cv &= ~0x0200;
1283 if(mode)
1284 cv |= 0x0200;
1285 codec->codec_write(codec, 0x64, cv);
1286 return 0;
1287 }
1288
1289
1290 /* copied from drivers/sound/maestro.c */
1291 #if 0 /* there has been 1 person on the planet with a pt101 that we
1292 know of. If they care, they can put this back in :) */
1293 static int pt101_init(struct ac97_codec * codec)
1294 {
1295 printk(KERN_INFO "ac97_codec: PT101 Codec detected, initializing but _not_ installing mixer device.\n");
1296 /* who knows.. */
1297 codec->codec_write(codec, 0x2A, 0x0001);
1298 codec->codec_write(codec, 0x2C, 0x0000);
1299 codec->codec_write(codec, 0x2C, 0xFFFF);
1300 codec->codec_write(codec, 0x10, 0x9F1F);
1301 codec->codec_write(codec, 0x12, 0x0808);
1302 codec->codec_write(codec, 0x14, 0x9F1F);
1303 codec->codec_write(codec, 0x16, 0x9F1F);
1304 codec->codec_write(codec, 0x18, 0x0404);
1305 codec->codec_write(codec, 0x1A, 0x0000);
1306 codec->codec_write(codec, 0x1C, 0x0000);
1307 codec->codec_write(codec, 0x02, 0x0404);
1308 codec->codec_write(codec, 0x04, 0x0808);
1309 codec->codec_write(codec, 0x0C, 0x801F);
1310 codec->codec_write(codec, 0x0E, 0x801F);
1311 return 0;
1312 }
1313 #endif
1314
1315
1316 EXPORT_SYMBOL(ac97_read_proc);
1317 EXPORT_SYMBOL(ac97_probe_codec);
1318
1319 /*
1320 * AC97 library support routines
1321 */
1322
1323 /**
1324 * ac97_set_dac_rate - set codec rate adaption
1325 * @codec: ac97 code
1326 * @rate: rate in hertz
1327 *
1328 * Set the DAC rate. Assumes the codec supports VRA. The caller is
1329 * expected to have checked this little detail.
1330 */
1331
1332 unsigned int ac97_set_dac_rate(struct ac97_codec *codec, unsigned int rate)
1333 {
1334 unsigned int new_rate = rate;
1335 u32 dacp;
1336 u32 mast_vol, phone_vol, mono_vol, pcm_vol;
1337 u32 mute_vol = 0x8000; /* The mute volume? */
1338
1339 if(rate != codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE))
1340 {
1341 /* Mute several registers */
1342 mast_vol = codec->codec_read(codec, AC97_MASTER_VOL_STEREO);
1343 mono_vol = codec->codec_read(codec, AC97_MASTER_VOL_MONO);
1344 phone_vol = codec->codec_read(codec, AC97_HEADPHONE_VOL);
1345 pcm_vol = codec->codec_read(codec, AC97_PCMOUT_VOL);
1346 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mute_vol);
1347 codec->codec_write(codec, AC97_MASTER_VOL_MONO, mute_vol);
1348 codec->codec_write(codec, AC97_HEADPHONE_VOL, mute_vol);
1349 codec->codec_write(codec, AC97_PCMOUT_VOL, mute_vol);
1350
1351 /* Power down the DAC */
1352 dacp=codec->codec_read(codec, AC97_POWER_CONTROL);
1353 codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0200);
1354 /* Load the rate and read the effective rate */
1355 codec->codec_write(codec, AC97_PCM_FRONT_DAC_RATE, rate);
1356 new_rate=codec->codec_read(codec, AC97_PCM_FRONT_DAC_RATE);
1357 /* Power it back up */
1358 codec->codec_write(codec, AC97_POWER_CONTROL, dacp);
1359
1360 /* Restore volumes */
1361 codec->codec_write(codec, AC97_MASTER_VOL_STEREO, mast_vol);
1362 codec->codec_write(codec, AC97_MASTER_VOL_MONO, mono_vol);
1363 codec->codec_write(codec, AC97_HEADPHONE_VOL, phone_vol);
1364 codec->codec_write(codec, AC97_PCMOUT_VOL, pcm_vol);
1365 }
1366 return new_rate;
1367 }
1368
1369 EXPORT_SYMBOL(ac97_set_dac_rate);
1370
1371 /**
1372 * ac97_set_adc_rate - set codec rate adaption
1373 * @codec: ac97 code
1374 * @rate: rate in hertz
1375 *
1376 * Set the ADC rate. Assumes the codec supports VRA. The caller is
1377 * expected to have checked this little detail.
1378 */
1379
1380 unsigned int ac97_set_adc_rate(struct ac97_codec *codec, unsigned int rate)
1381 {
1382 unsigned int new_rate = rate;
1383 u32 dacp;
1384
1385 if(rate != codec->codec_read(codec, AC97_PCM_LR_ADC_RATE))
1386 {
1387 /* Power down the ADC */
1388 dacp=codec->codec_read(codec, AC97_POWER_CONTROL);
1389 codec->codec_write(codec, AC97_POWER_CONTROL, dacp|0x0100);
1390 /* Load the rate and read the effective rate */
1391 codec->codec_write(codec, AC97_PCM_LR_ADC_RATE, rate);
1392 new_rate=codec->codec_read(codec, AC97_PCM_LR_ADC_RATE);
1393 /* Power it back up */
1394 codec->codec_write(codec, AC97_POWER_CONTROL, dacp);
1395 }
1396 return new_rate;
1397 }
1398
1399 EXPORT_SYMBOL(ac97_set_adc_rate);
1400
1401 static int swap_headphone(int remove_master)
1402 {
1403 struct list_head *l;
1404 struct ac97_codec *c;
1405
1406 if (remove_master) {
1407 mutex_lock(&codec_mutex);
1408 list_for_each(l, &codecs)
1409 {
1410 c = list_entry(l, struct ac97_codec, list);
1411 if (supported_mixer(c, SOUND_MIXER_PHONEOUT))
1412 c->supported_mixers &= ~SOUND_MASK_PHONEOUT;
1413 }
1414 mutex_unlock(&codec_mutex);
1415 } else
1416 ac97_hw[SOUND_MIXER_PHONEOUT].offset = AC97_MASTER_VOL_STEREO;
1417
1418 /* Scale values already match */
1419 ac97_hw[SOUND_MIXER_VOLUME].offset = AC97_MASTER_VOL_MONO;
1420 return 0;
1421 }
1422
1423 static int apply_quirk(int quirk)
1424 {
1425 switch (quirk) {
1426 case AC97_TUNE_NONE:
1427 return 0;
1428 case AC97_TUNE_HP_ONLY:
1429 return swap_headphone(1);
1430 case AC97_TUNE_SWAP_HP:
1431 return swap_headphone(0);
1432 case AC97_TUNE_SWAP_SURROUND:
1433 return -ENOSYS; /* not yet implemented */
1434 case AC97_TUNE_AD_SHARING:
1435 return -ENOSYS; /* not yet implemented */
1436 case AC97_TUNE_ALC_JACK:
1437 return -ENOSYS; /* not yet implemented */
1438 }
1439 return -EINVAL;
1440 }
1441
1442 /**
1443 * ac97_tune_hardware - tune up the hardware
1444 * @pdev: pci_dev pointer
1445 * @quirk: quirk list
1446 * @override: explicit quirk value (overrides if not AC97_TUNE_DEFAULT)
1447 *
1448 * Do some workaround for each pci device, such as renaming of the
1449 * headphone (true line-out) control as "Master".
1450 * The quirk-list must be terminated with a zero-filled entry.
1451 *
1452 * Returns zero if successful, or a negative error code on failure.
1453 */
1454
1455 int ac97_tune_hardware(struct pci_dev *pdev, struct ac97_quirk *quirk, int override)
1456 {
1457 int result;
1458
1459 if (!quirk)
1460 return -EINVAL;
1461
1462 if (override != AC97_TUNE_DEFAULT) {
1463 result = apply_quirk(override);
1464 if (result < 0)
1465 printk(KERN_ERR "applying quirk type %d failed (%d)\n", override, result);
1466 return result;
1467 }
1468
1469 for (; quirk->vendor; quirk++) {
1470 if (quirk->vendor != pdev->subsystem_vendor)
1471 continue;
1472 if ((! quirk->mask && quirk->device == pdev->subsystem_device) ||
1473 quirk->device == (quirk->mask & pdev->subsystem_device)) {
1474 #ifdef DEBUG
1475 printk("ac97 quirk for %s (%04x:%04x)\n", quirk->name, ac97->subsystem_vendor, pdev->subsystem_device);
1476 #endif
1477 result = apply_quirk(quirk->type);
1478 if (result < 0)
1479 printk(KERN_ERR "applying quirk type %d for %s failed (%d)\n", quirk->type, quirk->name, result);
1480 return result;
1481 }
1482 }
1483 return 0;
1484 }
1485
1486 EXPORT_SYMBOL_GPL(ac97_tune_hardware);
1487
1488 MODULE_LICENSE("GPL");
linux v2.6.22.y-op