2 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
3 * Universal interface for Audio Codec '97
5 * For more details look to AC '97 component specification revision 2.2
6 * by Intel Corporation (http://developer.intel.com) and to datasheets
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include <sound/driver.h>
27 #include <linux/delay.h>
28 #include <linux/init.h>
29 #include <linux/slab.h>
30 #include <sound/core.h>
31 #include <sound/pcm.h>
32 #include <sound/control.h>
33 #include <sound/ac97_codec.h>
34 #include <sound/asoundef.h>
35 #include "ac97_patch.h"
37 #include "ac97_local.h"
45 static unsigned char rate_reg_tables[2][4][9] = {
49 /* 3&4 front, 7&8 rear, 6&9 center/lfe */
50 AC97_PCM_FRONT_DAC_RATE, /* slot 3 */
51 AC97_PCM_FRONT_DAC_RATE, /* slot 4 */
53 AC97_PCM_LFE_DAC_RATE, /* slot 6 */
54 AC97_PCM_SURR_DAC_RATE, /* slot 7 */
55 AC97_PCM_SURR_DAC_RATE, /* slot 8 */
56 AC97_PCM_LFE_DAC_RATE, /* slot 9 */
61 /* 7&8 front, 6&9 rear, 10&11 center/lfe */
65 AC97_PCM_SURR_DAC_RATE, /* slot 6 */
66 AC97_PCM_FRONT_DAC_RATE, /* slot 7 */
67 AC97_PCM_FRONT_DAC_RATE, /* slot 8 */
68 AC97_PCM_SURR_DAC_RATE, /* slot 9 */
69 AC97_PCM_LFE_DAC_RATE, /* slot 10 */
70 AC97_PCM_LFE_DAC_RATE, /* slot 11 */
73 /* 6&9 front, 10&11 rear, 3&4 center/lfe */
74 AC97_PCM_LFE_DAC_RATE, /* slot 3 */
75 AC97_PCM_LFE_DAC_RATE, /* slot 4 */
77 AC97_PCM_FRONT_DAC_RATE, /* slot 6 */
80 AC97_PCM_FRONT_DAC_RATE, /* slot 9 */
81 AC97_PCM_SURR_DAC_RATE, /* slot 10 */
82 AC97_PCM_SURR_DAC_RATE, /* slot 11 */
85 /* 10&11 front, 3&4 rear, 7&8 center/lfe */
86 AC97_PCM_SURR_DAC_RATE, /* slot 3 */
87 AC97_PCM_SURR_DAC_RATE, /* slot 4 */
90 AC97_PCM_LFE_DAC_RATE, /* slot 7 */
91 AC97_PCM_LFE_DAC_RATE, /* slot 8 */
93 AC97_PCM_FRONT_DAC_RATE, /* slot 10 */
94 AC97_PCM_FRONT_DAC_RATE, /* slot 11 */
98 /* FIXME: double rates */
100 /* 3&4 front, 7&8 rear, 6&9 center/lfe */
101 AC97_PCM_FRONT_DAC_RATE, /* slot 3 */
102 AC97_PCM_FRONT_DAC_RATE, /* slot 4 */
104 AC97_PCM_LFE_DAC_RATE, /* slot 6 */
105 AC97_PCM_SURR_DAC_RATE, /* slot 7 */
106 AC97_PCM_SURR_DAC_RATE, /* slot 8 */
107 AC97_PCM_LFE_DAC_RATE, /* slot 9 */
112 /* 7&8 front, 6&9 rear, 10&11 center/lfe */
116 AC97_PCM_SURR_DAC_RATE, /* slot 6 */
117 AC97_PCM_FRONT_DAC_RATE, /* slot 7 */
118 AC97_PCM_FRONT_DAC_RATE, /* slot 8 */
119 AC97_PCM_SURR_DAC_RATE, /* slot 9 */
120 AC97_PCM_LFE_DAC_RATE, /* slot 10 */
121 AC97_PCM_LFE_DAC_RATE, /* slot 11 */
124 /* 6&9 front, 10&11 rear, 3&4 center/lfe */
125 AC97_PCM_LFE_DAC_RATE, /* slot 3 */
126 AC97_PCM_LFE_DAC_RATE, /* slot 4 */
128 AC97_PCM_FRONT_DAC_RATE, /* slot 6 */
131 AC97_PCM_FRONT_DAC_RATE, /* slot 9 */
132 AC97_PCM_SURR_DAC_RATE, /* slot 10 */
133 AC97_PCM_SURR_DAC_RATE, /* slot 11 */
136 /* 10&11 front, 3&4 rear, 7&8 center/lfe */
137 AC97_PCM_SURR_DAC_RATE, /* slot 3 */
138 AC97_PCM_SURR_DAC_RATE, /* slot 4 */
141 AC97_PCM_LFE_DAC_RATE, /* slot 7 */
142 AC97_PCM_LFE_DAC_RATE, /* slot 8 */
144 AC97_PCM_FRONT_DAC_RATE, /* slot 10 */
145 AC97_PCM_FRONT_DAC_RATE, /* slot 11 */
149 /* FIXME: more various mappings for ADC? */
150 static unsigned char rate_cregs[9] = {
151 AC97_PCM_LR_ADC_RATE, /* 3 */
152 AC97_PCM_LR_ADC_RATE, /* 4 */
154 AC97_PCM_MIC_ADC_RATE, /* 6 */
162 static unsigned char get_slot_reg(struct ac97_pcm *pcm, unsigned short cidx,
163 unsigned short slot, int dbl)
170 return AC97_SPDIF; /* pseudo register */
171 if (pcm->stream == SNDRV_PCM_STREAM_PLAYBACK)
172 return rate_reg_tables[dbl][pcm->r[dbl].rate_table[cidx]][slot - 3];
174 return rate_cregs[slot - 3];
177 static int set_spdif_rate(ac97_t *ac97, unsigned short rate)
179 unsigned short old, bits, reg, mask;
182 if (! (ac97->ext_id & AC97_EI_SPDIF))
185 if (ac97->flags & AC97_CS_SPDIF) {
187 case 48000: bits = 0; break;
188 case 44100: bits = 1 << AC97_SC_SPSR_SHIFT; break;
189 default: /* invalid - disable output */
190 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0);
193 reg = AC97_CSR_SPDIF;
194 mask = 1 << AC97_SC_SPSR_SHIFT;
196 if (ac97->id == AC97_ID_CM9739 && rate != 48000) {
197 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0);
201 case 44100: bits = AC97_SC_SPSR_44K; break;
202 case 48000: bits = AC97_SC_SPSR_48K; break;
203 case 32000: bits = AC97_SC_SPSR_32K; break;
204 default: /* invalid - disable output */
205 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0);
209 mask = AC97_SC_SPSR_MASK;
212 spin_lock(&ac97->reg_lock);
213 old = ac97->regs[reg] & mask;
214 spin_unlock(&ac97->reg_lock);
216 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0);
217 snd_ac97_update_bits(ac97, reg, mask, bits);
218 /* update the internal spdif bits */
219 spin_lock(&ac97->reg_lock);
220 sbits = ac97->spdif_status;
221 if (sbits & IEC958_AES0_PROFESSIONAL) {
222 sbits &= ~IEC958_AES0_PRO_FS;
224 case 44100: sbits |= IEC958_AES0_PRO_FS_44100; break;
225 case 48000: sbits |= IEC958_AES0_PRO_FS_48000; break;
226 case 32000: sbits |= IEC958_AES0_PRO_FS_32000; break;
229 sbits &= ~(IEC958_AES3_CON_FS << 24);
231 case 44100: sbits |= IEC958_AES3_CON_FS_44100<<24; break;
232 case 48000: sbits |= IEC958_AES3_CON_FS_48000<<24; break;
233 case 32000: sbits |= IEC958_AES3_CON_FS_32000<<24; break;
236 ac97->spdif_status = sbits;
237 spin_unlock(&ac97->reg_lock);
239 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, AC97_EA_SPDIF);
244 * snd_ac97_set_rate - change the rate of the given input/output.
245 * @ac97: the ac97 instance
246 * @reg: the register to change
247 * @rate: the sample rate to set
249 * Changes the rate of the given input/output on the codec.
250 * If the codec doesn't support VAR, the rate must be 48000 (except
253 * The valid registers are AC97_PMC_MIC_ADC_RATE,
254 * AC97_PCM_FRONT_DAC_RATE, AC97_PCM_LR_ADC_RATE.
255 * AC97_PCM_SURR_DAC_RATE and AC97_PCM_LFE_DAC_RATE are accepted
256 * if the codec supports them.
257 * AC97_SPDIF is accepted as a pseudo register to modify the SPDIF
260 * Returns zero if successful, or a negative error code on failure.
262 int snd_ac97_set_rate(ac97_t *ac97, int reg, unsigned short rate)
267 case AC97_PCM_MIC_ADC_RATE:
268 if ((ac97->regs[AC97_EXTENDED_STATUS] & AC97_EA_VRM) == 0) /* MIC VRA */
272 case AC97_PCM_FRONT_DAC_RATE:
273 case AC97_PCM_LR_ADC_RATE:
274 if ((ac97->regs[AC97_EXTENDED_STATUS] & AC97_EA_VRA) == 0) /* VRA */
278 case AC97_PCM_SURR_DAC_RATE:
279 if (! (ac97->scaps & AC97_SCAP_SURROUND_DAC))
282 case AC97_PCM_LFE_DAC_RATE:
283 if (! (ac97->scaps & AC97_SCAP_CENTER_LFE_DAC))
288 return set_spdif_rate(ac97, rate);
292 tmp = ((unsigned int)rate * ac97->bus->clock) / 48000;
295 snd_ac97_update(ac97, reg, tmp & 0xffff);
296 snd_ac97_read(ac97, reg);
300 static unsigned short get_pslots(ac97_t *ac97, unsigned char *rate_table, unsigned short *spdif_slots)
302 if (!ac97_is_audio(ac97))
304 if (ac97_is_rev22(ac97) || ac97_can_amap(ac97)) {
305 unsigned short slots = 0;
306 if (ac97_is_rev22(ac97)) {
307 /* Note: it's simply emulation of AMAP behaviour */
309 es = ac97->regs[AC97_EXTENDED_STATUS] &= ~AC97_EI_DACS_SLOT_MASK;
310 switch (ac97->addr) {
312 case 2: es |= (1<<AC97_EI_DACS_SLOT_SHIFT); break;
313 case 3: es |= (2<<AC97_EI_DACS_SLOT_SHIFT); break;
315 snd_ac97_write_cache(ac97, AC97_EXTENDED_STATUS, es);
317 switch (ac97->addr) {
319 slots |= (1<<AC97_SLOT_PCM_LEFT)|(1<<AC97_SLOT_PCM_RIGHT);
320 if (ac97->scaps & AC97_SCAP_SURROUND_DAC)
321 slots |= (1<<AC97_SLOT_PCM_SLEFT)|(1<<AC97_SLOT_PCM_SRIGHT);
322 if (ac97->scaps & AC97_SCAP_CENTER_LFE_DAC)
323 slots |= (1<<AC97_SLOT_PCM_CENTER)|(1<<AC97_SLOT_LFE);
324 if (ac97->ext_id & AC97_EI_SPDIF) {
325 if (!(ac97->scaps & AC97_SCAP_SURROUND_DAC))
326 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT)|(1<<AC97_SLOT_SPDIF_RIGHT);
327 else if (!(ac97->scaps & AC97_SCAP_CENTER_LFE_DAC))
328 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT1)|(1<<AC97_SLOT_SPDIF_RIGHT1);
330 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT2)|(1<<AC97_SLOT_SPDIF_RIGHT2);
336 slots |= (1<<AC97_SLOT_PCM_SLEFT)|(1<<AC97_SLOT_PCM_SRIGHT);
337 if (ac97->scaps & AC97_SCAP_SURROUND_DAC)
338 slots |= (1<<AC97_SLOT_PCM_CENTER)|(1<<AC97_SLOT_LFE);
339 if (ac97->ext_id & AC97_EI_SPDIF) {
340 if (!(ac97->scaps & AC97_SCAP_SURROUND_DAC))
341 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT1)|(1<<AC97_SLOT_SPDIF_RIGHT1);
343 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT2)|(1<<AC97_SLOT_SPDIF_RIGHT2);
348 slots |= (1<<AC97_SLOT_PCM_CENTER)|(1<<AC97_SLOT_LFE);
349 if (ac97->ext_id & AC97_EI_SPDIF)
350 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT2)|(1<<AC97_SLOT_SPDIF_RIGHT2);
356 unsigned short slots;
357 slots = (1<<AC97_SLOT_PCM_LEFT)|(1<<AC97_SLOT_PCM_RIGHT);
358 if (ac97->scaps & AC97_SCAP_SURROUND_DAC)
359 slots |= (1<<AC97_SLOT_PCM_SLEFT)|(1<<AC97_SLOT_PCM_SRIGHT);
360 if (ac97->scaps & AC97_SCAP_CENTER_LFE_DAC)
361 slots |= (1<<AC97_SLOT_PCM_CENTER)|(1<<AC97_SLOT_LFE);
362 if (ac97->ext_id & AC97_EI_SPDIF) {
363 if (!(ac97->scaps & AC97_SCAP_SURROUND_DAC))
364 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT)|(1<<AC97_SLOT_SPDIF_RIGHT);
365 else if (!(ac97->scaps & AC97_SCAP_CENTER_LFE_DAC))
366 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT1)|(1<<AC97_SLOT_SPDIF_RIGHT1);
368 *spdif_slots = (1<<AC97_SLOT_SPDIF_LEFT2)|(1<<AC97_SLOT_SPDIF_RIGHT2);
375 static unsigned short get_cslots(ac97_t *ac97)
377 unsigned short slots;
379 if (!ac97_is_audio(ac97))
381 slots = (1<<AC97_SLOT_PCM_LEFT)|(1<<AC97_SLOT_PCM_RIGHT);
382 slots |= (1<<AC97_SLOT_MIC);
386 static unsigned int get_rates(struct ac97_pcm *pcm, unsigned int cidx, unsigned short slots, int dbl)
389 unsigned int rates = ~0;
392 for (i = 3; i < 12; i++) {
393 if (!(slots & (1 << i)))
395 reg = get_slot_reg(pcm, cidx, i, dbl);
397 case AC97_PCM_FRONT_DAC_RATE: idx = AC97_RATES_FRONT_DAC; break;
398 case AC97_PCM_SURR_DAC_RATE: idx = AC97_RATES_SURR_DAC; break;
399 case AC97_PCM_LFE_DAC_RATE: idx = AC97_RATES_LFE_DAC; break;
400 case AC97_PCM_LR_ADC_RATE: idx = AC97_RATES_ADC; break;
401 case AC97_PCM_MIC_ADC_RATE: idx = AC97_RATES_MIC_ADC; break;
402 default: idx = AC97_RATES_SPDIF; break;
404 rates &= pcm->r[dbl].codec[cidx]->rates[idx];
410 * snd_ac97_pcm_assign - assign AC97 slots to given PCM streams
411 * @bus: the ac97 bus instance
412 * @pcms_count: count of PCMs to be assigned
413 * @pcms: PCMs to be assigned
415 * It assigns available AC97 slots for given PCMs. If none or only
416 * some slots are available, pcm->xxx.slots and pcm->xxx.rslots[] members
417 * are reduced and might be zero.
419 int snd_ac97_pcm_assign(ac97_bus_t *bus,
420 unsigned short pcms_count,
421 const struct ac97_pcm *pcms)
424 const struct ac97_pcm *pcm;
425 struct ac97_pcm *rpcms, *rpcm;
426 unsigned short avail_slots[2][4];
427 unsigned char rate_table[2][4];
428 unsigned short tmp, slots;
429 unsigned short spdif_slots[4];
433 rpcms = snd_kcalloc(sizeof(struct ac97_pcm) * pcms_count, GFP_KERNEL);
436 memset(avail_slots, 0, sizeof(avail_slots));
437 memset(rate_table, 0, sizeof(rate_table));
438 memset(spdif_slots, 0, sizeof(spdif_slots));
439 for (i = 0; i < 4; i++) {
440 codec = bus->codec[i];
443 avail_slots[0][i] = get_pslots(codec, &rate_table[0][i], &spdif_slots[i]);
444 avail_slots[1][i] = get_cslots(codec);
445 if (!(codec->scaps & AC97_SCAP_INDEP_SDIN)) {
446 for (j = 0; j < i; j++) {
448 avail_slots[1][i] &= ~avail_slots[1][j];
452 /* FIXME: add double rate allocation */
453 /* first step - exclusive devices */
454 for (i = 0; i < pcms_count; i++) {
457 /* low-level driver thinks that it's more clever */
458 if (pcm->copy_flag) {
462 rpcm->stream = pcm->stream;
463 rpcm->exclusive = pcm->exclusive;
464 rpcm->spdif = pcm->spdif;
465 rpcm->private_value = pcm->private_value;
468 slots = pcm->r[0].slots;
469 for (j = 0; j < 4 && slots; j++) {
473 if (pcm->spdif && pcm->stream == 0)
474 tmp = spdif_slots[j];
476 tmp = avail_slots[pcm->stream][j];
477 if (pcm->exclusive) {
478 /* exclusive access */
480 for (k = 0; k < i; k++) {
481 if (rpcm->stream == rpcms[k].stream)
482 tmp &= ~rpcms[k].r[0].rslots[j];
485 /* non-exclusive access */
486 tmp &= pcm->r[0].slots;
489 rpcm->r[0].rslots[j] = tmp;
490 rpcm->r[0].codec[j] = bus->codec[j];
491 rpcm->r[0].rate_table[j] = rate_table[pcm->stream][j];
492 rates = get_rates(rpcm, j, tmp, 0);
494 avail_slots[pcm->stream][j] &= ~tmp;
497 rpcm->r[0].slots |= tmp;
498 rpcm->rates &= rates;
500 if (rpcm->rates == ~0)
501 rpcm->rates = 0; /* not used */
503 bus->pcms_count = pcms_count;
509 * snd_ac97_pcm_open - opens the given AC97 pcm
510 * @pcm: the ac97 pcm instance
511 * @rate: rate in Hz, if codec does not support VRA, this value must be 48000Hz
512 * @cfg: output stream characteristics
513 * @slots: a subset of allocated slots (snd_ac97_pcm_assign) for this pcm
515 * It locks the specified slots and sets the given rate to AC97 registers.
517 int snd_ac97_pcm_open(struct ac97_pcm *pcm, unsigned int rate,
518 enum ac97_pcm_cfg cfg, unsigned short slots)
521 int i, cidx, r = 0, ok_flag;
522 unsigned int reg_ok = 0;
526 if (rate > 48000) /* FIXME: add support for double rate */
529 if (cfg == AC97_PCM_CFG_SPDIF) {
531 for (cidx = 0; cidx < 4; cidx++)
532 if (bus->codec[cidx] && (bus->codec[cidx]->ext_id & AC97_EI_SPDIF)) {
533 err = set_spdif_rate(bus->codec[cidx], rate);
538 spin_lock_irq(&pcm->bus->bus_lock);
539 for (i = 3; i < 12; i++) {
540 if (!(slots & (1 << i)))
543 for (cidx = 0; cidx < 4; cidx++) {
544 if (bus->used_slots[pcm->stream][cidx] & (1 << i)) {
545 spin_unlock_irq(&pcm->bus->bus_lock);
549 if (pcm->r[r].rslots[cidx] & (1 << i)) {
550 bus->used_slots[pcm->stream][cidx] |= (1 << i);
555 spin_unlock_irq(&pcm->bus->bus_lock);
556 snd_printk(KERN_ERR "cannot find configuration for AC97 slot %i\n", i);
561 spin_unlock_irq(&pcm->bus->bus_lock);
562 for (i = 3; i < 12; i++) {
563 if (!(slots & (1 << i)))
565 for (cidx = 0; cidx < 4; cidx++) {
566 if (pcm->r[r].rslots[cidx] & (1 << i)) {
567 reg = get_slot_reg(pcm, cidx, i, r);
569 snd_printk(KERN_ERR "invalid AC97 slot %i?\n", i);
572 if (reg_ok & (1 << (reg - AC97_PCM_FRONT_DAC_RATE)))
574 //printk(KERN_DEBUG "setting ac97 reg 0x%x to rate %d\n", reg, rate);
575 err = snd_ac97_set_rate(pcm->r[r].codec[cidx], reg, rate);
577 snd_printk(KERN_ERR "error in snd_ac97_set_rate: cidx=%d, reg=0x%x, rate=%d, err=%d\n", cidx, reg, rate, err);
579 reg_ok |= (1 << (reg - AC97_PCM_FRONT_DAC_RATE));
588 snd_ac97_pcm_close(pcm);
593 * snd_ac97_pcm_close - closes the given AC97 pcm
594 * @pcm: the ac97 pcm instance
596 * It frees the locked AC97 slots.
598 int snd_ac97_pcm_close(struct ac97_pcm *pcm)
601 unsigned short slots = pcm->aslots;
605 spin_lock_irq(&pcm->bus->bus_lock);
606 for (i = 3; i < 12; i++) {
607 if (!(slots & (1 << i)))
609 for (cidx = 0; cidx < 4; cidx++)
610 bus->used_slots[pcm->stream][cidx] &= ~(1 << i);
613 spin_unlock_irq(&pcm->bus->bus_lock);