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Linux/sound/pci/ali5451/ali5451.c

  1 /*
  2  *  Matt Wu <Matt_Wu@acersoftech.com.cn>
  3  *  Apr 26, 2001
  4  *  Routines for control of ALi pci audio M5451
  5  *
  6  *  BUGS:
  7  *    --
  8  *
  9  *  TODO:
 10  *    --
 11  *
 12  *   This program is free software; you can redistribute it and/or modify
 13  *   it under the terms of the GNU General Public Lcodecnse as published by
 14  *   the Free Software Foundation; either version 2 of the Lcodecnse, or
 15  *   (at your option) any later version.
 16  *
 17  *   This program is distributed in the hope that it will be useful,
 18  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 19  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 20  *   GNU General Public Lcodecnse for more details.
 21  *
 22  *   You should have received a copy of the GNU General Public Lcodecnse
 23  *   along with this program; if not, write to the Free Software
 24  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 25  *
 26  */
 27 
 28 #include <asm/io.h>
 29 #include <linux/delay.h>
 30 #include <linux/interrupt.h>
 31 #include <linux/init.h>
 32 #include <linux/pci.h>
 33 #include <linux/slab.h>
 34 #include <linux/module.h>
 35 #include <linux/dma-mapping.h>
 36 #include <sound/core.h>
 37 #include <sound/pcm.h>
 38 #include <sound/info.h>
 39 #include <sound/ac97_codec.h>
 40 #include <sound/mpu401.h>
 41 #include <sound/initval.h>
 42 
 43 MODULE_AUTHOR("Matt Wu <Matt_Wu@acersoftech.com.cn>");
 44 MODULE_DESCRIPTION("ALI M5451");
 45 MODULE_LICENSE("GPL");
 46 MODULE_SUPPORTED_DEVICE("{{ALI,M5451,pci},{ALI,M5451}}");
 47 
 48 static int index = SNDRV_DEFAULT_IDX1;  /* Index */
 49 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
 50 static int pcm_channels = 32;
 51 static bool spdif;
 52 
 53 module_param(index, int, 0444);
 54 MODULE_PARM_DESC(index, "Index value for ALI M5451 PCI Audio.");
 55 module_param(id, charp, 0444);
 56 MODULE_PARM_DESC(id, "ID string for ALI M5451 PCI Audio.");
 57 module_param(pcm_channels, int, 0444);
 58 MODULE_PARM_DESC(pcm_channels, "PCM Channels");
 59 module_param(spdif, bool, 0444);
 60 MODULE_PARM_DESC(spdif, "Support SPDIF I/O");
 61 
 62 /* just for backward compatibility */
 63 static bool enable;
 64 module_param(enable, bool, 0444);
 65 
 66 
 67 /*
 68  *  Constants definition
 69  */
 70 
 71 #define DEVICE_ID_ALI5451       ((PCI_VENDOR_ID_AL<<16)|PCI_DEVICE_ID_AL_M5451)
 72 
 73 
 74 #define ALI_CHANNELS            32
 75 
 76 #define ALI_PCM_IN_CHANNEL      31
 77 #define ALI_SPDIF_IN_CHANNEL    19
 78 #define ALI_SPDIF_OUT_CHANNEL   15
 79 #define ALI_CENTER_CHANNEL      24
 80 #define ALI_LEF_CHANNEL         23
 81 #define ALI_SURR_LEFT_CHANNEL   26
 82 #define ALI_SURR_RIGHT_CHANNEL  25
 83 #define ALI_MODEM_IN_CHANNEL    21
 84 #define ALI_MODEM_OUT_CHANNEL   20
 85 
 86 #define SNDRV_ALI_VOICE_TYPE_PCM        01
 87 #define SNDRV_ALI_VOICE_TYPE_OTH        02
 88 
 89 #define ALI_5451_V02            0x02
 90 
 91 /*
 92  *  Direct Registers
 93  */
 94 
 95 #define ALI_LEGACY_DMAR0        0x00  /* ADR0 */
 96 #define ALI_LEGACY_DMAR4        0x04  /* CNT0 */
 97 #define ALI_LEGACY_DMAR11       0x0b  /* MOD  */
 98 #define ALI_LEGACY_DMAR15       0x0f  /* MMR  */
 99 #define ALI_MPUR0               0x20
100 #define ALI_MPUR1               0x21
101 #define ALI_MPUR2               0x22
102 #define ALI_MPUR3               0x23
103 
104 #define ALI_AC97_WRITE          0x40
105 #define ALI_AC97_READ           0x44
106 
107 #define ALI_SCTRL               0x48
108 #define   ALI_SPDIF_OUT_ENABLE          0x20
109 #define   ALI_SCTRL_LINE_IN2            (1 << 9)
110 #define   ALI_SCTRL_GPIO_IN2            (1 << 13)
111 #define   ALI_SCTRL_LINE_OUT_EN         (1 << 20)
112 #define   ALI_SCTRL_GPIO_OUT_EN         (1 << 23)
113 #define   ALI_SCTRL_CODEC1_READY        (1 << 24)
114 #define   ALI_SCTRL_CODEC2_READY        (1 << 25)
115 #define ALI_AC97_GPIO           0x4c
116 #define   ALI_AC97_GPIO_ENABLE          0x8000
117 #define   ALI_AC97_GPIO_DATA_SHIFT      16
118 #define ALI_SPDIF_CS            0x70
119 #define ALI_SPDIF_CTRL          0x74
120 #define   ALI_SPDIF_IN_FUNC_ENABLE      0x02
121 #define   ALI_SPDIF_IN_CH_STATUS        0x40
122 #define   ALI_SPDIF_OUT_CH_STATUS       0xbf
123 #define ALI_START               0x80
124 #define ALI_STOP                0x84
125 #define ALI_CSPF                0x90
126 #define ALI_AINT                0x98
127 #define ALI_GC_CIR              0xa0
128         #define ENDLP_IE                0x00001000
129         #define MIDLP_IE                0x00002000
130 #define ALI_AINTEN              0xa4
131 #define ALI_VOLUME              0xa8
132 #define ALI_SBDELTA_DELTA_R     0xac
133 #define ALI_MISCINT             0xb0
134         #define ADDRESS_IRQ             0x00000020
135         #define TARGET_REACHED          0x00008000
136         #define MIXER_OVERFLOW          0x00000800
137         #define MIXER_UNDERFLOW         0x00000400
138         #define GPIO_IRQ                0x01000000
139 #define ALI_SBBL_SBCL           0xc0
140 #define ALI_SBCTRL_SBE2R_SBDD   0xc4
141 #define ALI_STIMER              0xc8
142 #define ALI_GLOBAL_CONTROL      0xd4
143 #define   ALI_SPDIF_OUT_SEL_PCM         0x00000400 /* bit 10 */
144 #define   ALI_SPDIF_IN_SUPPORT          0x00000800 /* bit 11 */
145 #define   ALI_SPDIF_OUT_CH_ENABLE       0x00008000 /* bit 15 */
146 #define   ALI_SPDIF_IN_CH_ENABLE        0x00080000 /* bit 19 */
147 #define   ALI_PCM_IN_ENABLE             0x80000000 /* bit 31 */
148 
149 #define ALI_CSO_ALPHA_FMS       0xe0
150 #define ALI_LBA                 0xe4
151 #define ALI_ESO_DELTA           0xe8
152 #define ALI_GVSEL_PAN_VOC_CTRL_EC       0xf0
153 #define ALI_EBUF1               0xf4
154 #define ALI_EBUF2               0xf8
155 
156 #define ALI_REG(codec, x) ((codec)->port + x)
157 
158 #define MAX_CODECS 2
159 
160 
161 struct snd_ali;
162 struct snd_ali_voice;
163 
164 struct snd_ali_channel_control {
165         /* register data */
166         struct REGDATA {
167                 unsigned int start;
168                 unsigned int stop;
169                 unsigned int aint;
170                 unsigned int ainten;
171         } data;
172                 
173         /* register addresses */
174         struct REGS {
175                 unsigned int start;
176                 unsigned int stop;
177                 unsigned int aint;
178                 unsigned int ainten;
179                 unsigned int ac97read;
180                 unsigned int ac97write;
181         } regs;
182 
183 };
184 
185 struct snd_ali_voice {
186         unsigned int number;
187         unsigned int use :1,
188                 pcm :1,
189                 midi :1,
190                 mode :1,
191                 synth :1,
192                 running :1;
193 
194         /* PCM data */
195         struct snd_ali *codec;
196         struct snd_pcm_substream *substream;
197         struct snd_ali_voice *extra;
198         
199         int eso;                /* final ESO value for channel */
200         int count;              /* runtime->period_size */
201 
202         /* --- */
203 
204         void *private_data;
205         void (*private_free)(void *private_data);
206 };
207 
208 
209 struct snd_alidev {
210 
211         struct snd_ali_voice voices[ALI_CHANNELS];      
212 
213         unsigned int    chcnt;                  /* num of opened channels */
214         unsigned int    chmap;                  /* bitmap for opened channels */
215         unsigned int synthcount;
216 
217 };
218 
219 
220 #define ALI_GLOBAL_REGS         56
221 #define ALI_CHANNEL_REGS        8
222 struct snd_ali_image {
223         u32 regs[ALI_GLOBAL_REGS];
224         u32 channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
225 };
226 
227 
228 struct snd_ali {
229         int             irq;
230         unsigned long   port;
231         unsigned char   revision;
232 
233         unsigned int hw_initialized :1;
234         unsigned int spdif_support :1;
235 
236         struct pci_dev  *pci;
237         struct pci_dev  *pci_m1533;
238         struct pci_dev  *pci_m7101;
239 
240         struct snd_card *card;
241         struct snd_pcm  *pcm[MAX_CODECS];
242         struct snd_alidev       synth;
243         struct snd_ali_channel_control chregs;
244 
245         /* S/PDIF Mask */
246         unsigned int    spdif_mask;
247 
248         unsigned int spurious_irq_count;
249         unsigned int spurious_irq_max_delta;
250 
251         unsigned int num_of_codecs;
252 
253         struct snd_ac97_bus *ac97_bus;
254         struct snd_ac97 *ac97[MAX_CODECS];
255         unsigned short  ac97_ext_id;
256         unsigned short  ac97_ext_status;
257 
258         spinlock_t      reg_lock;
259         spinlock_t      voice_alloc;
260 
261 #ifdef CONFIG_PM_SLEEP
262         struct snd_ali_image *image;
263 #endif
264 };
265 
266 static const struct pci_device_id snd_ali_ids[] = {
267         {PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5451), 0, 0, 0},
268         {0, }
269 };
270 MODULE_DEVICE_TABLE(pci, snd_ali_ids);
271 
272 static void snd_ali_clear_voices(struct snd_ali *, unsigned int, unsigned int);
273 static unsigned short snd_ali_codec_peek(struct snd_ali *, int, unsigned short);
274 static void snd_ali_codec_poke(struct snd_ali *, int, unsigned short,
275                                unsigned short);
276 
277 /*
278  *  AC97 ACCESS
279  */
280 
281 static inline unsigned int snd_ali_5451_peek(struct snd_ali *codec,
282                                              unsigned int port)
283 {
284         return (unsigned int)inl(ALI_REG(codec, port)); 
285 }
286 
287 static inline void snd_ali_5451_poke(struct snd_ali *codec,
288                                      unsigned int port,
289                                      unsigned int val)
290 {
291         outl((unsigned int)val, ALI_REG(codec, port));
292 }
293 
294 static int snd_ali_codec_ready(struct snd_ali *codec,
295                                unsigned int port)
296 {
297         unsigned long end_time;
298         unsigned int res;
299         
300         end_time = jiffies + msecs_to_jiffies(250);
301 
302         for (;;) {
303                 res = snd_ali_5451_peek(codec,port);
304                 if (!(res & 0x8000))
305                         return 0;
306                 if (!time_after_eq(end_time, jiffies))
307                         break;
308                 schedule_timeout_uninterruptible(1);
309         }
310 
311         snd_ali_5451_poke(codec, port, res & ~0x8000);
312         dev_dbg(codec->card->dev, "ali_codec_ready: codec is not ready.\n ");
313         return -EIO;
314 }
315 
316 static int snd_ali_stimer_ready(struct snd_ali *codec)
317 {
318         unsigned long end_time;
319         unsigned long dwChk1,dwChk2;
320         
321         dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
322         end_time = jiffies + msecs_to_jiffies(250);
323 
324         for (;;) {
325                 dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
326                 if (dwChk2 != dwChk1)
327                         return 0;
328                 if (!time_after_eq(end_time, jiffies))
329                         break;
330                 schedule_timeout_uninterruptible(1);
331         }
332 
333         dev_err(codec->card->dev, "ali_stimer_read: stimer is not ready.\n");
334         return -EIO;
335 }
336 
337 static void snd_ali_codec_poke(struct snd_ali *codec,int secondary,
338                                unsigned short reg,
339                                unsigned short val)
340 {
341         unsigned int dwVal;
342         unsigned int port;
343 
344         if (reg >= 0x80) {
345                 dev_err(codec->card->dev,
346                         "ali_codec_poke: reg(%xh) invalid.\n", reg);
347                 return;
348         }
349 
350         port = codec->chregs.regs.ac97write;
351 
352         if (snd_ali_codec_ready(codec, port) < 0)
353                 return;
354         if (snd_ali_stimer_ready(codec) < 0)
355                 return;
356 
357         dwVal  = (unsigned int) (reg & 0xff);
358         dwVal |= 0x8000 | (val << 16);
359         if (secondary)
360                 dwVal |= 0x0080;
361         if (codec->revision == ALI_5451_V02)
362                 dwVal |= 0x0100;
363 
364         snd_ali_5451_poke(codec, port, dwVal);
365 
366         return ;
367 }
368 
369 static unsigned short snd_ali_codec_peek(struct snd_ali *codec,
370                                          int secondary,
371                                          unsigned short reg)
372 {
373         unsigned int dwVal;
374         unsigned int port;
375 
376         if (reg >= 0x80) {
377                 dev_err(codec->card->dev,
378                         "ali_codec_peek: reg(%xh) invalid.\n", reg);
379                 return ~0;
380         }
381 
382         port = codec->chregs.regs.ac97read;
383 
384         if (snd_ali_codec_ready(codec, port) < 0)
385                 return ~0;
386         if (snd_ali_stimer_ready(codec) < 0)
387                 return ~0;
388 
389         dwVal  = (unsigned int) (reg & 0xff);
390         dwVal |= 0x8000;                                /* bit 15*/
391         if (secondary)
392                 dwVal |= 0x0080;
393 
394         snd_ali_5451_poke(codec, port, dwVal);
395 
396         if (snd_ali_stimer_ready(codec) < 0)
397                 return ~0;
398         if (snd_ali_codec_ready(codec, port) < 0)
399                 return ~0;
400         
401         return (snd_ali_5451_peek(codec, port) & 0xffff0000) >> 16;
402 }
403 
404 static void snd_ali_codec_write(struct snd_ac97 *ac97,
405                                 unsigned short reg,
406                                 unsigned short val )
407 {
408         struct snd_ali *codec = ac97->private_data;
409 
410         dev_dbg(codec->card->dev, "codec_write: reg=%xh data=%xh.\n", reg, val);
411         if (reg == AC97_GPIO_STATUS) {
412                 outl((val << ALI_AC97_GPIO_DATA_SHIFT) | ALI_AC97_GPIO_ENABLE,
413                      ALI_REG(codec, ALI_AC97_GPIO));
414                 return;
415         }
416         snd_ali_codec_poke(codec, ac97->num, reg, val);
417         return ;
418 }
419 
420 
421 static unsigned short snd_ali_codec_read(struct snd_ac97 *ac97,
422                                          unsigned short reg)
423 {
424         struct snd_ali *codec = ac97->private_data;
425 
426         dev_dbg(codec->card->dev, "codec_read reg=%xh.\n", reg);
427         return snd_ali_codec_peek(codec, ac97->num, reg);
428 }
429 
430 /*
431  *      AC97 Reset
432  */
433 
434 static int snd_ali_reset_5451(struct snd_ali *codec)
435 {
436         struct pci_dev *pci_dev;
437         unsigned short wCount, wReg;
438         unsigned int   dwVal;
439         
440         pci_dev = codec->pci_m1533;
441         if (pci_dev) {
442                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
443                 pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
444                 mdelay(5);
445                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
446                 pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
447                 mdelay(5);
448         }
449         
450         pci_dev = codec->pci;
451         pci_read_config_dword(pci_dev, 0x44, &dwVal);
452         pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
453         udelay(500);
454         pci_read_config_dword(pci_dev, 0x44, &dwVal);
455         pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
456         mdelay(5);
457         
458         wCount = 200;
459         while(wCount--) {
460                 wReg = snd_ali_codec_peek(codec, 0, AC97_POWERDOWN);
461                 if ((wReg & 0x000f) == 0x000f)
462                         return 0;
463                 mdelay(5);
464         }
465 
466         /* non-fatal if you have a non PM capable codec */
467         /* dev_warn(codec->card->dev, "ali5451: reset time out\n"); */
468         return 0;
469 }
470 
471 /*
472  *  ALI 5451 Controller
473  */
474 
475 static void snd_ali_enable_special_channel(struct snd_ali *codec,
476                                            unsigned int channel)
477 {
478         unsigned long dwVal;
479 
480         dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
481         dwVal |= 1 << (channel & 0x0000001f);
482         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
483 }
484 
485 static void snd_ali_disable_special_channel(struct snd_ali *codec,
486                                             unsigned int channel)
487 {
488         unsigned long dwVal;
489 
490         dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
491         dwVal &= ~(1 << (channel & 0x0000001f));
492         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
493 }
494 
495 static void snd_ali_enable_address_interrupt(struct snd_ali *codec)
496 {
497         unsigned int gc;
498 
499         gc  = inl(ALI_REG(codec, ALI_GC_CIR));
500         gc |= ENDLP_IE;
501         gc |= MIDLP_IE;
502         outl( gc, ALI_REG(codec, ALI_GC_CIR));
503 }
504 
505 static void snd_ali_disable_address_interrupt(struct snd_ali *codec)
506 {
507         unsigned int gc;
508 
509         gc  = inl(ALI_REG(codec, ALI_GC_CIR));
510         gc &= ~ENDLP_IE;
511         gc &= ~MIDLP_IE;
512         outl(gc, ALI_REG(codec, ALI_GC_CIR));
513 }
514 
515 static void snd_ali_disable_voice_irq(struct snd_ali *codec,
516                                       unsigned int channel)
517 {
518         unsigned int mask;
519         struct snd_ali_channel_control *pchregs = &(codec->chregs);
520 
521         dev_dbg(codec->card->dev, "disable_voice_irq channel=%d\n", channel);
522 
523         mask = 1 << (channel & 0x1f);
524         pchregs->data.ainten  = inl(ALI_REG(codec, pchregs->regs.ainten));
525         pchregs->data.ainten &= ~mask;
526         outl(pchregs->data.ainten, ALI_REG(codec, pchregs->regs.ainten));
527 }
528 
529 static int snd_ali_alloc_pcm_channel(struct snd_ali *codec, int channel)
530 {
531         unsigned int idx =  channel & 0x1f;
532 
533         if (codec->synth.chcnt >= ALI_CHANNELS){
534                 dev_err(codec->card->dev,
535                            "ali_alloc_pcm_channel: no free channels.\n");
536                 return -1;
537         }
538 
539         if (!(codec->synth.chmap & (1 << idx))) {
540                 codec->synth.chmap |= 1 << idx;
541                 codec->synth.chcnt++;
542                 dev_dbg(codec->card->dev, "alloc_pcm_channel no. %d.\n", idx);
543                 return idx;
544         }
545         return -1;
546 }
547 
548 static int snd_ali_find_free_channel(struct snd_ali * codec, int rec)
549 {
550         int idx;
551         int result = -1;
552 
553         dev_dbg(codec->card->dev,
554                 "find_free_channel: for %s\n", rec ? "rec" : "pcm");
555 
556         /* recording */
557         if (rec) {
558                 if (codec->spdif_support &&
559                     (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
560                      ALI_SPDIF_IN_SUPPORT))
561                         idx = ALI_SPDIF_IN_CHANNEL;
562                 else
563                         idx = ALI_PCM_IN_CHANNEL;
564 
565                 result = snd_ali_alloc_pcm_channel(codec, idx);
566                 if (result >= 0)
567                         return result;
568                 else {
569                         dev_err(codec->card->dev,
570                                 "ali_find_free_channel: record channel is busy now.\n");
571                         return -1;
572                 }
573         }
574 
575         /* playback... */
576         if (codec->spdif_support &&
577             (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
578              ALI_SPDIF_OUT_CH_ENABLE)) {
579                 idx = ALI_SPDIF_OUT_CHANNEL;
580                 result = snd_ali_alloc_pcm_channel(codec, idx);
581                 if (result >= 0)
582                         return result;
583                 else
584                         dev_err(codec->card->dev,
585                                 "ali_find_free_channel: S/PDIF out channel is in busy now.\n");
586         }
587 
588         for (idx = 0; idx < ALI_CHANNELS; idx++) {
589                 result = snd_ali_alloc_pcm_channel(codec, idx);
590                 if (result >= 0)
591                         return result;
592         }
593         dev_err(codec->card->dev, "ali_find_free_channel: no free channels.\n");
594         return -1;
595 }
596 
597 static void snd_ali_free_channel_pcm(struct snd_ali *codec, int channel)
598 {
599         unsigned int idx = channel & 0x0000001f;
600 
601         dev_dbg(codec->card->dev, "free_channel_pcm channel=%d\n", channel);
602 
603         if (channel < 0 || channel >= ALI_CHANNELS)
604                 return;
605 
606         if (!(codec->synth.chmap & (1 << idx))) {
607                 dev_err(codec->card->dev,
608                         "ali_free_channel_pcm: channel %d is not in use.\n",
609                         channel);
610                 return;
611         } else {
612                 codec->synth.chmap &= ~(1 << idx);
613                 codec->synth.chcnt--;
614         }
615 }
616 
617 static void snd_ali_stop_voice(struct snd_ali *codec, unsigned int channel)
618 {
619         unsigned int mask = 1 << (channel & 0x1f);
620 
621         dev_dbg(codec->card->dev, "stop_voice: channel=%d\n", channel);
622         outl(mask, ALI_REG(codec, codec->chregs.regs.stop));
623 }
624 
625 /*
626  *    S/PDIF Part
627  */
628 
629 static void snd_ali_delay(struct snd_ali *codec,int interval)
630 {
631         unsigned long  begintimer,currenttimer;
632 
633         begintimer   = inl(ALI_REG(codec, ALI_STIMER));
634         currenttimer = inl(ALI_REG(codec, ALI_STIMER));
635 
636         while (currenttimer < begintimer + interval) {
637                 if (snd_ali_stimer_ready(codec) < 0)
638                         break;
639                 currenttimer = inl(ALI_REG(codec,  ALI_STIMER));
640                 cpu_relax();
641         }
642 }
643 
644 static void snd_ali_detect_spdif_rate(struct snd_ali *codec)
645 {
646         u16 wval;
647         u16 count = 0;
648         u8  bval, R1 = 0, R2;
649 
650         bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
651         bval |= 0x1F;
652         outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL + 1));
653 
654         while ((R1 < 0x0b || R1 > 0x0e) && R1 != 0x12 && count <= 50000) {
655                 count ++;
656                 snd_ali_delay(codec, 6);
657                 bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
658                 R1 = bval & 0x1F;
659         }
660 
661         if (count > 50000) {
662                 dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
663                 return;
664         }
665 
666         for (count = 0; count <= 50000; count++) {
667                 snd_ali_delay(codec, 6);
668                 bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
669                 R2 = bval & 0x1F;
670                 if (R2 != R1)
671                         R1 = R2;
672                 else
673                         break;
674         }
675 
676         if (count > 50000) {
677                 dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
678                 return;
679         }
680 
681         if (R2 >= 0x0b && R2 <= 0x0e) {
682                 wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
683                 wval &= 0xe0f0;
684                 wval |= (0x09 << 8) | 0x05;
685                 outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
686 
687                 bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3)) & 0xf0;
688                 outb(bval | 0x02, ALI_REG(codec, ALI_SPDIF_CS + 3));
689         } else if (R2 == 0x12) {
690                 wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
691                 wval &= 0xe0f0;
692                 wval |= (0x0e << 8) | 0x08;
693                 outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
694 
695                 bval  = inb(ALI_REG(codec,ALI_SPDIF_CS + 3)) & 0xf0;
696                 outb(bval | 0x03, ALI_REG(codec, ALI_SPDIF_CS + 3));
697         }
698 }
699 
700 static unsigned int snd_ali_get_spdif_in_rate(struct snd_ali *codec)
701 {
702         u32     dwRate;
703         u8      bval;
704 
705         bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
706         bval &= 0x7f;
707         bval |= 0x40;
708         outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL));
709 
710         snd_ali_detect_spdif_rate(codec);
711 
712         bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3));
713         bval &= 0x0f;
714 
715         switch (bval) {
716         case 0: dwRate = 44100; break;
717         case 1: dwRate = 48000; break;
718         case 2: dwRate = 32000; break;
719         default: dwRate = 0; break;
720         }
721 
722         return dwRate;
723 }
724 
725 static void snd_ali_enable_spdif_in(struct snd_ali *codec)
726 {       
727         unsigned int dwVal;
728 
729         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
730         dwVal |= ALI_SPDIF_IN_SUPPORT;
731         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
732 
733         dwVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
734         dwVal |= 0x02;
735         outb(dwVal, ALI_REG(codec, ALI_SPDIF_CTRL));
736 
737         snd_ali_enable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
738 }
739 
740 static void snd_ali_disable_spdif_in(struct snd_ali *codec)
741 {
742         unsigned int dwVal;
743         
744         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
745         dwVal &= ~ALI_SPDIF_IN_SUPPORT;
746         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
747         
748         snd_ali_disable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);   
749 }
750 
751 
752 static void snd_ali_set_spdif_out_rate(struct snd_ali *codec, unsigned int rate)
753 {
754         unsigned char  bVal;
755         unsigned int  dwRate;
756         
757         switch (rate) {
758         case 32000: dwRate = 0x300; break;
759         case 48000: dwRate = 0x200; break;
760         default: dwRate = 0; break;
761         }
762         
763         bVal  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
764         bVal &= (unsigned char)(~(1<<6));
765         
766         bVal |= 0x80;           /* select right */
767         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
768         outb(dwRate | 0x20, ALI_REG(codec, ALI_SPDIF_CS + 2));
769         
770         bVal &= ~0x80;  /* select left */
771         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
772         outw(rate | 0x10, ALI_REG(codec, ALI_SPDIF_CS + 2));
773 }
774 
775 static void snd_ali_enable_spdif_out(struct snd_ali *codec)
776 {
777         unsigned short wVal;
778         unsigned char bVal;
779         struct pci_dev *pci_dev;
780 
781         pci_dev = codec->pci_m1533;
782         if (pci_dev == NULL)
783                 return;
784         pci_read_config_byte(pci_dev, 0x61, &bVal);
785         bVal |= 0x40;
786         pci_write_config_byte(pci_dev, 0x61, bVal);
787         pci_read_config_byte(pci_dev, 0x7d, &bVal);
788         bVal |= 0x01;
789         pci_write_config_byte(pci_dev, 0x7d, bVal);
790 
791         pci_read_config_byte(pci_dev, 0x7e, &bVal);
792         bVal &= (~0x20);
793         bVal |= 0x10;
794         pci_write_config_byte(pci_dev, 0x7e, bVal);
795 
796         bVal = inb(ALI_REG(codec, ALI_SCTRL));
797         outb(bVal | ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
798 
799         bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
800         outb(bVal & ALI_SPDIF_OUT_CH_STATUS, ALI_REG(codec, ALI_SPDIF_CTRL));
801    
802         wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
803         wVal |= ALI_SPDIF_OUT_SEL_PCM;
804         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
805         snd_ali_disable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
806 }
807 
808 static void snd_ali_enable_spdif_chnout(struct snd_ali *codec)
809 {
810         unsigned short wVal;
811 
812         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
813         wVal &= ~ALI_SPDIF_OUT_SEL_PCM;
814         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
815 /*
816         wVal = inw(ALI_REG(codec, ALI_SPDIF_CS));
817         if (flag & ALI_SPDIF_OUT_NON_PCM)
818                 wVal |= 0x0002;
819         else    
820                 wVal &= (~0x0002);
821         outw(wVal, ALI_REG(codec, ALI_SPDIF_CS));
822 */
823         snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
824 }
825 
826 static void snd_ali_disable_spdif_chnout(struct snd_ali *codec)
827 {
828         unsigned short wVal;
829 
830         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
831         wVal |= ALI_SPDIF_OUT_SEL_PCM;
832         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
833 
834         snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
835 }
836 
837 static void snd_ali_disable_spdif_out(struct snd_ali *codec)
838 {
839         unsigned char  bVal;
840 
841         bVal = inb(ALI_REG(codec, ALI_SCTRL));
842         outb(bVal & ~ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
843 
844         snd_ali_disable_spdif_chnout(codec);
845 }
846 
847 static void snd_ali_update_ptr(struct snd_ali *codec, int channel)
848 {
849         struct snd_ali_voice *pvoice;
850         struct snd_ali_channel_control *pchregs;
851         unsigned int old, mask;
852 
853         pchregs = &(codec->chregs);
854 
855         /* check if interrupt occurred for channel */
856         old  = pchregs->data.aint;
857         mask = 1U << (channel & 0x1f);
858 
859         if (!(old & mask))
860                 return;
861 
862         pvoice = &codec->synth.voices[channel];
863 
864         udelay(100);
865         spin_lock(&codec->reg_lock);
866 
867         if (pvoice->pcm && pvoice->substream) {
868                 /* pcm interrupt */
869                 if (pvoice->running) {
870                         dev_dbg(codec->card->dev,
871                                 "update_ptr: cso=%4.4x cspf=%d.\n",
872                                 inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2)),
873                                 (inl(ALI_REG(codec, ALI_CSPF)) & mask) == mask);
874                         spin_unlock(&codec->reg_lock);
875                         snd_pcm_period_elapsed(pvoice->substream);
876                         spin_lock(&codec->reg_lock);
877                 } else {
878                         snd_ali_stop_voice(codec, channel);
879                         snd_ali_disable_voice_irq(codec, channel);
880                 }       
881         } else if (codec->synth.voices[channel].synth) {
882                 /* synth interrupt */
883         } else if (codec->synth.voices[channel].midi) {
884                 /* midi interrupt */
885         } else {
886                 /* unknown interrupt */
887                 snd_ali_stop_voice(codec, channel);
888                 snd_ali_disable_voice_irq(codec, channel);
889         }
890         spin_unlock(&codec->reg_lock);
891         outl(mask,ALI_REG(codec,pchregs->regs.aint));
892         pchregs->data.aint = old & (~mask);
893 }
894 
895 static irqreturn_t snd_ali_card_interrupt(int irq, void *dev_id)
896 {
897         struct snd_ali  *codec = dev_id;
898         int channel;
899         unsigned int audio_int;
900         struct snd_ali_channel_control *pchregs;
901 
902         if (codec == NULL || !codec->hw_initialized)
903                 return IRQ_NONE;
904 
905         audio_int = inl(ALI_REG(codec, ALI_MISCINT));
906         if (!audio_int)
907                 return IRQ_NONE;
908 
909         pchregs = &(codec->chregs);
910         if (audio_int & ADDRESS_IRQ) {
911                 /* get interrupt status for all channels */
912                 pchregs->data.aint = inl(ALI_REG(codec, pchregs->regs.aint));
913                 for (channel = 0; channel < ALI_CHANNELS; channel++)
914                         snd_ali_update_ptr(codec, channel);
915         }
916         outl((TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
917                 ALI_REG(codec, ALI_MISCINT));
918 
919         return IRQ_HANDLED;
920 }
921 
922 
923 static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec,
924                                                  int type, int rec, int channel)
925 {
926         struct snd_ali_voice *pvoice;
927         int idx;
928 
929         dev_dbg(codec->card->dev, "alloc_voice: type=%d rec=%d\n", type, rec);
930 
931         spin_lock_irq(&codec->voice_alloc);
932         if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
933                 idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
934                         snd_ali_find_free_channel(codec,rec);
935                 if (idx < 0) {
936                         dev_err(codec->card->dev, "ali_alloc_voice: err.\n");
937                         spin_unlock_irq(&codec->voice_alloc);
938                         return NULL;
939                 }
940                 pvoice = &(codec->synth.voices[idx]);
941                 pvoice->codec = codec;
942                 pvoice->use = 1;
943                 pvoice->pcm = 1;
944                 pvoice->mode = rec;
945                 spin_unlock_irq(&codec->voice_alloc);
946                 return pvoice;
947         }
948         spin_unlock_irq(&codec->voice_alloc);
949         return NULL;
950 }
951 
952 
953 static void snd_ali_free_voice(struct snd_ali * codec,
954                                struct snd_ali_voice *pvoice)
955 {
956         void (*private_free)(void *);
957         void *private_data;
958 
959         dev_dbg(codec->card->dev, "free_voice: channel=%d\n", pvoice->number);
960         if (!pvoice->use)
961                 return;
962         snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
963         spin_lock_irq(&codec->voice_alloc);
964         private_free = pvoice->private_free;
965         private_data = pvoice->private_data;
966         pvoice->private_free = NULL;
967         pvoice->private_data = NULL;
968         if (pvoice->pcm)
969                 snd_ali_free_channel_pcm(codec, pvoice->number);
970         pvoice->use = pvoice->pcm = pvoice->synth = 0;
971         pvoice->substream = NULL;
972         spin_unlock_irq(&codec->voice_alloc);
973         if (private_free)
974                 private_free(private_data);
975 }
976 
977 
978 static void snd_ali_clear_voices(struct snd_ali *codec,
979                                  unsigned int v_min,
980                                  unsigned int v_max)
981 {
982         unsigned int i;
983 
984         for (i = v_min; i <= v_max; i++) {
985                 snd_ali_stop_voice(codec, i);
986                 snd_ali_disable_voice_irq(codec, i);
987         }
988 }
989 
990 static void snd_ali_write_voice_regs(struct snd_ali *codec,
991                          unsigned int Channel,
992                          unsigned int LBA,
993                          unsigned int CSO,
994                          unsigned int ESO,
995                          unsigned int DELTA,
996                          unsigned int ALPHA_FMS,
997                          unsigned int GVSEL,
998                          unsigned int PAN,
999                          unsigned int VOL,
1000                          unsigned int CTRL,
1001                          unsigned int EC)
1002 {
1003         unsigned int ctlcmds[4];
1004         
1005         outb((unsigned char)(Channel & 0x001f), ALI_REG(codec, ALI_GC_CIR));
1006 
1007         ctlcmds[0] =  (CSO << 16) | (ALPHA_FMS & 0x0000ffff);
1008         ctlcmds[1] =  LBA;
1009         ctlcmds[2] =  (ESO << 16) | (DELTA & 0x0ffff);
1010         ctlcmds[3] =  (GVSEL << 31) |
1011                       ((PAN & 0x0000007f) << 24) |
1012                       ((VOL & 0x000000ff) << 16) |
1013                       ((CTRL & 0x0000000f) << 12) |
1014                       (EC & 0x00000fff);
1015 
1016         outb(Channel, ALI_REG(codec, ALI_GC_CIR));
1017 
1018         outl(ctlcmds[0], ALI_REG(codec, ALI_CSO_ALPHA_FMS));
1019         outl(ctlcmds[1], ALI_REG(codec, ALI_LBA));
1020         outl(ctlcmds[2], ALI_REG(codec, ALI_ESO_DELTA));
1021         outl(ctlcmds[3], ALI_REG(codec, ALI_GVSEL_PAN_VOC_CTRL_EC));
1022 
1023         outl(0x30000000, ALI_REG(codec, ALI_EBUF1));    /* Still Mode */
1024         outl(0x30000000, ALI_REG(codec, ALI_EBUF2));    /* Still Mode */
1025 }
1026 
1027 static unsigned int snd_ali_convert_rate(unsigned int rate, int rec)
1028 {
1029         unsigned int delta;
1030 
1031         if (rate < 4000)
1032                 rate = 4000;
1033         if (rate > 48000)
1034                 rate = 48000;
1035 
1036         if (rec) {
1037                 if (rate == 44100)
1038                         delta = 0x116a;
1039                 else if (rate == 8000)
1040                         delta = 0x6000;
1041                 else if (rate == 48000)
1042                         delta = 0x1000;
1043                 else
1044                         delta = ((48000 << 12) / rate) & 0x0000ffff;
1045         } else {
1046                 if (rate == 44100)
1047                         delta = 0xeb3;
1048                 else if (rate == 8000)
1049                         delta = 0x2ab;
1050                 else if (rate == 48000)
1051                         delta = 0x1000;
1052                 else 
1053                         delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
1054         }
1055 
1056         return delta;
1057 }
1058 
1059 static unsigned int snd_ali_control_mode(struct snd_pcm_substream *substream)
1060 {
1061         unsigned int CTRL;
1062         struct snd_pcm_runtime *runtime = substream->runtime;
1063 
1064         /* set ctrl mode
1065            CTRL default: 8-bit (unsigned) mono, loop mode enabled
1066          */
1067         CTRL = 0x00000001;
1068         if (snd_pcm_format_width(runtime->format) == 16)
1069                 CTRL |= 0x00000008;     /* 16-bit data */
1070         if (!snd_pcm_format_unsigned(runtime->format))
1071                 CTRL |= 0x00000002;     /* signed data */
1072         if (runtime->channels > 1)
1073                 CTRL |= 0x00000004;     /* stereo data */
1074         return CTRL;
1075 }
1076 
1077 /*
1078  *  PCM part
1079  */
1080 
1081 static int snd_ali_trigger(struct snd_pcm_substream *substream,
1082                                int cmd)
1083                                     
1084 {
1085         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1086         struct snd_pcm_substream *s;
1087         unsigned int what, whati, capture_flag;
1088         struct snd_ali_voice *pvoice, *evoice;
1089         unsigned int val;
1090         int do_start;
1091 
1092         switch (cmd) {
1093         case SNDRV_PCM_TRIGGER_START:
1094         case SNDRV_PCM_TRIGGER_RESUME:
1095                 do_start = 1;
1096                 break;
1097         case SNDRV_PCM_TRIGGER_STOP:
1098         case SNDRV_PCM_TRIGGER_SUSPEND:
1099                 do_start = 0;
1100                 break;
1101         default:
1102                 return -EINVAL;
1103         }
1104 
1105         what = whati = capture_flag = 0;
1106         snd_pcm_group_for_each_entry(s, substream) {
1107                 if ((struct snd_ali *) snd_pcm_substream_chip(s) == codec) {
1108                         pvoice = s->runtime->private_data;
1109                         evoice = pvoice->extra;
1110                         what |= 1 << (pvoice->number & 0x1f);
1111                         if (evoice == NULL)
1112                                 whati |= 1 << (pvoice->number & 0x1f);
1113                         else {
1114                                 whati |= 1 << (evoice->number & 0x1f);
1115                                 what |= 1 << (evoice->number & 0x1f);
1116                         }
1117                         if (do_start) {
1118                                 pvoice->running = 1;
1119                                 if (evoice != NULL)
1120                                         evoice->running = 1;
1121                         } else {
1122                                 pvoice->running = 0;
1123                                 if (evoice != NULL)
1124                                         evoice->running = 0;
1125                         }
1126                         snd_pcm_trigger_done(s, substream);
1127                         if (pvoice->mode)
1128                                 capture_flag = 1;
1129                 }
1130         }
1131         spin_lock(&codec->reg_lock);
1132         if (!do_start)
1133                 outl(what, ALI_REG(codec, ALI_STOP));
1134         val = inl(ALI_REG(codec, ALI_AINTEN));
1135         if (do_start)
1136                 val |= whati;
1137         else
1138                 val &= ~whati;
1139         outl(val, ALI_REG(codec, ALI_AINTEN));
1140         if (do_start)
1141                 outl(what, ALI_REG(codec, ALI_START));
1142         dev_dbg(codec->card->dev, "trigger: what=%xh whati=%xh\n", what, whati);
1143         spin_unlock(&codec->reg_lock);
1144 
1145         return 0;
1146 }
1147 
1148 static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
1149                                       struct snd_pcm_hw_params *hw_params)
1150 {
1151         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1152         struct snd_pcm_runtime *runtime = substream->runtime;
1153         struct snd_ali_voice *pvoice = runtime->private_data;
1154         struct snd_ali_voice *evoice = pvoice->extra;
1155         int err;
1156 
1157         err = snd_pcm_lib_malloc_pages(substream,
1158                                        params_buffer_bytes(hw_params));
1159         if (err < 0)
1160                 return err;
1161         
1162         /* voice management */
1163 
1164         if (params_buffer_size(hw_params) / 2 !=
1165             params_period_size(hw_params)) {
1166                 if (!evoice) {
1167                         evoice = snd_ali_alloc_voice(codec,
1168                                                      SNDRV_ALI_VOICE_TYPE_PCM,
1169                                                      0, -1);
1170                         if (!evoice)
1171                                 return -ENOMEM;
1172                         pvoice->extra = evoice;
1173                         evoice->substream = substream;
1174                 }
1175         } else {
1176                 if (evoice) {
1177                         snd_ali_free_voice(codec, evoice);
1178                         pvoice->extra = evoice = NULL;
1179                 }
1180         }
1181 
1182         return 0;
1183 }
1184 
1185 static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
1186 {
1187         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1188         struct snd_pcm_runtime *runtime = substream->runtime;
1189         struct snd_ali_voice *pvoice = runtime->private_data;
1190         struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
1191 
1192         snd_pcm_lib_free_pages(substream);
1193         if (evoice) {
1194                 snd_ali_free_voice(codec, evoice);
1195                 pvoice->extra = NULL;
1196         }
1197         return 0;
1198 }
1199 
1200 static int snd_ali_hw_params(struct snd_pcm_substream *substream,
1201                              struct snd_pcm_hw_params *hw_params)
1202 {
1203         return snd_pcm_lib_malloc_pages(substream,
1204                                         params_buffer_bytes(hw_params));
1205 }
1206 
1207 static int snd_ali_hw_free(struct snd_pcm_substream *substream)
1208 {
1209         return snd_pcm_lib_free_pages(substream);
1210 }
1211 
1212 static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
1213 {
1214         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1215         struct snd_pcm_runtime *runtime = substream->runtime;
1216         struct snd_ali_voice *pvoice = runtime->private_data;
1217         struct snd_ali_voice *evoice = pvoice->extra;
1218 
1219         unsigned int LBA;
1220         unsigned int Delta;
1221         unsigned int ESO;
1222         unsigned int CTRL;
1223         unsigned int GVSEL;
1224         unsigned int PAN;
1225         unsigned int VOL;
1226         unsigned int EC;
1227         
1228         dev_dbg(codec->card->dev, "playback_prepare ...\n");
1229 
1230         spin_lock_irq(&codec->reg_lock);        
1231         
1232         /* set Delta (rate) value */
1233         Delta = snd_ali_convert_rate(runtime->rate, 0);
1234 
1235         if (pvoice->number == ALI_SPDIF_IN_CHANNEL || 
1236             pvoice->number == ALI_PCM_IN_CHANNEL)
1237                 snd_ali_disable_special_channel(codec, pvoice->number);
1238         else if (codec->spdif_support &&
1239                  (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
1240                   ALI_SPDIF_OUT_CH_ENABLE)
1241                  && pvoice->number == ALI_SPDIF_OUT_CHANNEL) {
1242                 snd_ali_set_spdif_out_rate(codec, runtime->rate);
1243                 Delta = 0x1000;
1244         }
1245         
1246         /* set Loop Back Address */
1247         LBA = runtime->dma_addr;
1248 
1249         /* set interrupt count size */
1250         pvoice->count = runtime->period_size;
1251 
1252         /* set target ESO for channel */
1253         pvoice->eso = runtime->buffer_size; 
1254 
1255         dev_dbg(codec->card->dev, "playback_prepare: eso=%xh count=%xh\n",
1256                        pvoice->eso, pvoice->count);
1257 
1258         /* set ESO to capture first MIDLP interrupt */
1259         ESO = pvoice->eso -1;
1260         /* set ctrl mode */
1261         CTRL = snd_ali_control_mode(substream);
1262 
1263         GVSEL = 1;
1264         PAN = 0;
1265         VOL = 0;
1266         EC = 0;
1267         dev_dbg(codec->card->dev, "playback_prepare:\n");
1268         dev_dbg(codec->card->dev,
1269                 "ch=%d, Rate=%d Delta=%xh,GVSEL=%xh,PAN=%xh,CTRL=%xh\n",
1270                        pvoice->number,runtime->rate,Delta,GVSEL,PAN,CTRL);
1271         snd_ali_write_voice_regs(codec,
1272                                  pvoice->number,
1273                                  LBA,
1274                                  0,     /* cso */
1275                                  ESO,
1276                                  Delta,
1277                                  0,     /* alpha */
1278                                  GVSEL,
1279                                  PAN,
1280                                  VOL,
1281                                  CTRL,
1282                                  EC);
1283         if (evoice) {
1284                 evoice->count = pvoice->count;
1285                 evoice->eso = pvoice->count << 1;
1286                 ESO = evoice->eso - 1;
1287                 snd_ali_write_voice_regs(codec,
1288                                          evoice->number,
1289                                          LBA,
1290                                          0,     /* cso */
1291                                          ESO,
1292                                          Delta,
1293                                          0,     /* alpha */
1294                                          GVSEL,
1295                                          0x7f,
1296                                          0x3ff,
1297                                          CTRL,
1298                                          EC);
1299         }
1300         spin_unlock_irq(&codec->reg_lock);
1301         return 0;
1302 }
1303 
1304 
1305 static int snd_ali_prepare(struct snd_pcm_substream *substream)
1306 {
1307         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1308         struct snd_pcm_runtime *runtime = substream->runtime;
1309         struct snd_ali_voice *pvoice = runtime->private_data;
1310         unsigned int LBA;
1311         unsigned int Delta;
1312         unsigned int ESO;
1313         unsigned int CTRL;
1314         unsigned int GVSEL;
1315         unsigned int PAN;
1316         unsigned int VOL;
1317         unsigned int EC;
1318         u8       bValue;
1319 
1320         spin_lock_irq(&codec->reg_lock);
1321 
1322         dev_dbg(codec->card->dev, "ali_prepare...\n");
1323 
1324         snd_ali_enable_special_channel(codec,pvoice->number);
1325 
1326         Delta = (pvoice->number == ALI_MODEM_IN_CHANNEL ||
1327                  pvoice->number == ALI_MODEM_OUT_CHANNEL) ? 
1328                 0x1000 : snd_ali_convert_rate(runtime->rate, pvoice->mode);
1329 
1330         /* Prepare capture intr channel */
1331         if (pvoice->number == ALI_SPDIF_IN_CHANNEL) {
1332 
1333                 unsigned int rate;
1334                 
1335                 spin_unlock_irq(&codec->reg_lock);
1336                 if (codec->revision != ALI_5451_V02)
1337                         return -1;
1338 
1339                 rate = snd_ali_get_spdif_in_rate(codec);
1340                 if (rate == 0) {
1341                         dev_warn(codec->card->dev,
1342                                  "ali_capture_preapre: spdif rate detect err!\n");
1343                         rate = 48000;
1344                 }
1345                 spin_lock_irq(&codec->reg_lock);
1346                 bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
1347                 if (bValue & 0x10) {
1348                         outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
1349                         dev_warn(codec->card->dev,
1350                                  "clear SPDIF parity error flag.\n");
1351                 }
1352 
1353                 if (rate != 48000)
1354                         Delta = ((rate << 12) / runtime->rate) & 0x00ffff;
1355         }
1356 
1357         /* set target ESO for channel  */
1358         pvoice->eso = runtime->buffer_size; 
1359 
1360         /* set interrupt count size  */
1361         pvoice->count = runtime->period_size;
1362 
1363         /* set Loop Back Address  */
1364         LBA = runtime->dma_addr;
1365 
1366         /* set ESO to capture first MIDLP interrupt  */
1367         ESO = pvoice->eso - 1;
1368         CTRL = snd_ali_control_mode(substream);
1369         GVSEL = 0;
1370         PAN = 0x00;
1371         VOL = 0x00;
1372         EC = 0;
1373 
1374         snd_ali_write_voice_regs(    codec,
1375                                      pvoice->number,
1376                                      LBA,
1377                                      0, /* cso */
1378                                      ESO,
1379                                      Delta,
1380                                      0, /* alpha */
1381                                      GVSEL,
1382                                      PAN,
1383                                      VOL,
1384                                      CTRL,
1385                                      EC);
1386 
1387         spin_unlock_irq(&codec->reg_lock);
1388 
1389         return 0;
1390 }
1391 
1392 
1393 static snd_pcm_uframes_t
1394 snd_ali_playback_pointer(struct snd_pcm_substream *substream)
1395 {
1396         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1397         struct snd_pcm_runtime *runtime = substream->runtime;
1398         struct snd_ali_voice *pvoice = runtime->private_data;
1399         unsigned int cso;
1400 
1401         spin_lock(&codec->reg_lock);
1402         if (!pvoice->running) {
1403                 spin_unlock(&codec->reg_lock);
1404                 return 0;
1405         }
1406         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1407         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1408         spin_unlock(&codec->reg_lock);
1409         dev_dbg(codec->card->dev, "playback pointer returned cso=%xh.\n", cso);
1410 
1411         return cso;
1412 }
1413 
1414 
1415 static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1416 {
1417         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1418         struct snd_pcm_runtime *runtime = substream->runtime;
1419         struct snd_ali_voice *pvoice = runtime->private_data;
1420         unsigned int cso;
1421 
1422         spin_lock(&codec->reg_lock);
1423         if (!pvoice->running) {
1424                 spin_unlock(&codec->reg_lock);
1425                 return 0;
1426         }
1427         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1428         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1429         spin_unlock(&codec->reg_lock);
1430 
1431         return cso;
1432 }
1433 
1434 static struct snd_pcm_hardware snd_ali_playback =
1435 {
1436         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1437                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1438                          SNDRV_PCM_INFO_MMAP_VALID |
1439                          SNDRV_PCM_INFO_RESUME |
1440                          SNDRV_PCM_INFO_SYNC_START),
1441         .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1442                          SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1443         .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1444         .rate_min =             4000,
1445         .rate_max =             48000,
1446         .channels_min =         1,
1447         .channels_max =         2,
1448         .buffer_bytes_max =     (256*1024),
1449         .period_bytes_min =     64,
1450         .period_bytes_max =     (256*1024),
1451         .periods_min =          1,
1452         .periods_max =          1024,
1453         .fifo_size =            0,
1454 };
1455 
1456 /*
1457  *  Capture support device description
1458  */
1459 
1460 static struct snd_pcm_hardware snd_ali_capture =
1461 {
1462         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1463                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1464                          SNDRV_PCM_INFO_MMAP_VALID |
1465                          SNDRV_PCM_INFO_RESUME |
1466                          SNDRV_PCM_INFO_SYNC_START),
1467         .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1468                          SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1469         .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1470         .rate_min =             4000,
1471         .rate_max =             48000,
1472         .channels_min =         1,
1473         .channels_max =         2,
1474         .buffer_bytes_max =     (128*1024),
1475         .period_bytes_min =     64,
1476         .period_bytes_max =     (128*1024),
1477         .periods_min =          1,
1478         .periods_max =          1024,
1479         .fifo_size =            0,
1480 };
1481 
1482 static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1483 {
1484         struct snd_ali_voice *pvoice = runtime->private_data;
1485         struct snd_ali *codec;
1486 
1487         if (pvoice) {
1488                 codec = pvoice->codec;
1489                 snd_ali_free_voice(pvoice->codec, pvoice);
1490         }
1491 }
1492 
1493 static int snd_ali_open(struct snd_pcm_substream *substream, int rec,
1494                         int channel, struct snd_pcm_hardware *phw)
1495 {
1496         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1497         struct snd_pcm_runtime *runtime = substream->runtime;
1498         struct snd_ali_voice *pvoice;
1499 
1500         pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec,
1501                                      channel);
1502         if (!pvoice)
1503                 return -EAGAIN;
1504 
1505         pvoice->substream = substream;
1506         runtime->private_data = pvoice;
1507         runtime->private_free = snd_ali_pcm_free_substream;
1508 
1509         runtime->hw = *phw;
1510         snd_pcm_set_sync(substream);
1511         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
1512                                      0, 64*1024);
1513         return 0;
1514 }
1515 
1516 static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1517 {
1518         return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1519 }
1520 
1521 static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1522 {
1523         return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1524 }
1525 
1526 static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1527 {
1528         return 0;
1529 }
1530 
1531 static int snd_ali_close(struct snd_pcm_substream *substream)
1532 {
1533         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1534         struct snd_ali_voice *pvoice = substream->runtime->private_data;
1535 
1536         snd_ali_disable_special_channel(codec,pvoice->number);
1537 
1538         return 0;
1539 }
1540 
1541 static struct snd_pcm_ops snd_ali_playback_ops = {
1542         .open =         snd_ali_playback_open,
1543         .close =        snd_ali_playback_close,
1544         .ioctl =        snd_pcm_lib_ioctl,
1545         .hw_params =    snd_ali_playback_hw_params,
1546         .hw_free =      snd_ali_playback_hw_free,
1547         .prepare =      snd_ali_playback_prepare,
1548         .trigger =      snd_ali_trigger,
1549         .pointer =      snd_ali_playback_pointer,
1550 };
1551 
1552 static struct snd_pcm_ops snd_ali_capture_ops = {
1553         .open =         snd_ali_capture_open,
1554         .close =        snd_ali_close,
1555         .ioctl =        snd_pcm_lib_ioctl,
1556         .hw_params =    snd_ali_hw_params,
1557         .hw_free =      snd_ali_hw_free,
1558         .prepare =      snd_ali_prepare,
1559         .trigger =      snd_ali_trigger,
1560         .pointer =      snd_ali_pointer,
1561 };
1562 
1563 /*
1564  * Modem PCM
1565  */
1566 
1567 static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1568                                  struct snd_pcm_hw_params *hw_params)
1569 {
1570         struct snd_ali *chip = snd_pcm_substream_chip(substream);
1571         unsigned int modem_num = chip->num_of_codecs - 1;
1572         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE,
1573                        params_rate(hw_params));
1574         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1575         return snd_ali_hw_params(substream, hw_params);
1576 }
1577 
1578 static struct snd_pcm_hardware snd_ali_modem =
1579 {
1580         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1581                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1582                          SNDRV_PCM_INFO_MMAP_VALID |
1583                          SNDRV_PCM_INFO_RESUME |
1584                          SNDRV_PCM_INFO_SYNC_START),
1585         .formats =      SNDRV_PCM_FMTBIT_S16_LE,
1586         .rates =        (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000 |
1587                          SNDRV_PCM_RATE_16000),
1588         .rate_min =             8000,
1589         .rate_max =             16000,
1590         .channels_min =         1,
1591         .channels_max =         1,
1592         .buffer_bytes_max =     (256*1024),
1593         .period_bytes_min =     64,
1594         .period_bytes_max =     (256*1024),
1595         .periods_min =          1,
1596         .periods_max =          1024,
1597         .fifo_size =            0,
1598 };
1599 
1600 static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec,
1601                               int channel)
1602 {
1603         static unsigned int rates[] = {8000, 9600, 12000, 16000};
1604         static struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1605                 .count = ARRAY_SIZE(rates),
1606                 .list = rates,
1607                 .mask = 0,
1608         };
1609         int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1610 
1611         if (err)
1612                 return err;
1613         return snd_pcm_hw_constraint_list(substream->runtime, 0,
1614                         SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1615 }
1616 
1617 static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1618 {
1619         return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1620 }
1621 
1622 static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1623 {
1624         return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1625 }
1626 
1627 static struct snd_pcm_ops snd_ali_modem_playback_ops = {
1628         .open =         snd_ali_modem_playback_open,
1629         .close =        snd_ali_close,
1630         .ioctl =        snd_pcm_lib_ioctl,
1631         .hw_params =    snd_ali_modem_hw_params,
1632         .hw_free =      snd_ali_hw_free,
1633         .prepare =      snd_ali_prepare,
1634         .trigger =      snd_ali_trigger,
1635         .pointer =      snd_ali_pointer,
1636 };
1637 
1638 static struct snd_pcm_ops snd_ali_modem_capture_ops = {
1639         .open =         snd_ali_modem_capture_open,
1640         .close =        snd_ali_close,
1641         .ioctl =        snd_pcm_lib_ioctl,
1642         .hw_params =    snd_ali_modem_hw_params,
1643         .hw_free =      snd_ali_hw_free,
1644         .prepare =      snd_ali_prepare,
1645         .trigger =      snd_ali_trigger,
1646         .pointer =      snd_ali_pointer,
1647 };
1648 
1649 
1650 struct ali_pcm_description {
1651         char *name;
1652         unsigned int playback_num;
1653         unsigned int capture_num;
1654         struct snd_pcm_ops *playback_ops;
1655         struct snd_pcm_ops *capture_ops;
1656         unsigned short class;
1657 };
1658 
1659 
1660 static void snd_ali_pcm_free(struct snd_pcm *pcm)
1661 {
1662         struct snd_ali *codec = pcm->private_data;
1663         codec->pcm[pcm->device] = NULL;
1664 }
1665 
1666 
1667 static int snd_ali_pcm(struct snd_ali *codec, int device,
1668                        struct ali_pcm_description *desc)
1669 {
1670         struct snd_pcm *pcm;
1671         int err;
1672 
1673         err = snd_pcm_new(codec->card, desc->name, device,
1674                           desc->playback_num, desc->capture_num, &pcm);
1675         if (err < 0) {
1676                 dev_err(codec->card->dev,
1677                         "snd_ali_pcm: err called snd_pcm_new.\n");
1678                 return err;
1679         }
1680         pcm->private_data = codec;
1681         pcm->private_free = snd_ali_pcm_free;
1682         if (desc->playback_ops)
1683                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1684                                 desc->playback_ops);
1685         if (desc->capture_ops)
1686                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1687                                 desc->capture_ops);
1688 
1689         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1690                                               snd_dma_pci_data(codec->pci),
1691                                               64*1024, 128*1024);
1692 
1693         pcm->info_flags = 0;
1694         pcm->dev_class = desc->class;
1695         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1696         strcpy(pcm->name, desc->name);
1697         codec->pcm[0] = pcm;
1698         return 0;
1699 }
1700 
1701 static struct ali_pcm_description ali_pcms[] = {
1702         { .name = "ALI 5451",
1703           .playback_num = ALI_CHANNELS,
1704           .capture_num = 1,
1705           .playback_ops = &snd_ali_playback_ops,
1706           .capture_ops = &snd_ali_capture_ops
1707         },
1708         { .name = "ALI 5451 modem",
1709           .playback_num = 1,
1710           .capture_num = 1,
1711           .playback_ops = &snd_ali_modem_playback_ops,
1712           .capture_ops = &snd_ali_modem_capture_ops,
1713           .class = SNDRV_PCM_CLASS_MODEM
1714         }
1715 };
1716 
1717 static int snd_ali_build_pcms(struct snd_ali *codec)
1718 {
1719         int i, err;
1720         for (i = 0; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms); i++) {
1721                 err = snd_ali_pcm(codec, i, &ali_pcms[i]);
1722                 if (err < 0)
1723                         return err;
1724         }
1725         return 0;
1726 }
1727 
1728 
1729 #define ALI5451_SPDIF(xname, xindex, value) \
1730 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1731 .info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1732 .put = snd_ali5451_spdif_put, .private_value = value}
1733 
1734 #define snd_ali5451_spdif_info          snd_ctl_boolean_mono_info
1735 
1736 static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol,
1737                                  struct snd_ctl_elem_value *ucontrol)
1738 {
1739         struct snd_ali *codec = kcontrol->private_data;
1740         unsigned int spdif_enable;
1741 
1742         spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1743 
1744         spin_lock_irq(&codec->reg_lock);
1745         switch (kcontrol->private_value) {
1746         case 0:
1747                 spdif_enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1748                 break;
1749         case 1:
1750                 spdif_enable = ((codec->spdif_mask & 0x02) &&
1751                           (codec->spdif_mask & 0x04)) ? 1 : 0;
1752                 break;
1753         case 2:
1754                 spdif_enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1755                 break;
1756         default:
1757                 break;
1758         }
1759         ucontrol->value.integer.value[0] = spdif_enable;
1760         spin_unlock_irq(&codec->reg_lock);
1761         return 0;
1762 }
1763 
1764 static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol,
1765                                  struct snd_ctl_elem_value *ucontrol)
1766 {
1767         struct snd_ali *codec = kcontrol->private_data;
1768         unsigned int change = 0, spdif_enable = 0;
1769 
1770         spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1771 
1772         spin_lock_irq(&codec->reg_lock);
1773         switch (kcontrol->private_value) {
1774         case 0:
1775                 change = (codec->spdif_mask & 0x02) ? 1 : 0;
1776                 change = change ^ spdif_enable;
1777                 if (change) {
1778                         if (spdif_enable) {
1779                                 codec->spdif_mask |= 0x02;
1780                                 snd_ali_enable_spdif_out(codec);
1781                         } else {
1782                                 codec->spdif_mask &= ~(0x02);
1783                                 codec->spdif_mask &= ~(0x04);
1784                                 snd_ali_disable_spdif_out(codec);
1785                         }
1786                 }
1787                 break;
1788         case 1: 
1789                 change = (codec->spdif_mask & 0x04) ? 1 : 0;
1790                 change = change ^ spdif_enable;
1791                 if (change && (codec->spdif_mask & 0x02)) {
1792                         if (spdif_enable) {
1793                                 codec->spdif_mask |= 0x04;
1794                                 snd_ali_enable_spdif_chnout(codec);
1795                         } else {
1796                                 codec->spdif_mask &= ~(0x04);
1797                                 snd_ali_disable_spdif_chnout(codec);
1798                         }
1799                 }
1800                 break;
1801         case 2:
1802                 change = (codec->spdif_mask & 0x01) ? 1 : 0;
1803                 change = change ^ spdif_enable;
1804                 if (change) {
1805                         if (spdif_enable) {
1806                                 codec->spdif_mask |= 0x01;
1807                                 snd_ali_enable_spdif_in(codec);
1808                         } else {
1809                                 codec->spdif_mask &= ~(0x01);
1810                                 snd_ali_disable_spdif_in(codec);
1811                         }
1812                 }
1813                 break;
1814         default:
1815                 break;
1816         }
1817         spin_unlock_irq(&codec->reg_lock);
1818         
1819         return change;
1820 }
1821 
1822 static struct snd_kcontrol_new snd_ali5451_mixer_spdif[] = {
1823         /* spdif aplayback switch */
1824         /* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1825         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1826         /* spdif out to spdif channel */
1827         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1828         /* spdif in from spdif channel */
1829         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1830 };
1831 
1832 static int snd_ali_mixer(struct snd_ali *codec)
1833 {
1834         struct snd_ac97_template ac97;
1835         unsigned int idx;
1836         int i, err;
1837         static struct snd_ac97_bus_ops ops = {
1838                 .write = snd_ali_codec_write,
1839                 .read = snd_ali_codec_read,
1840         };
1841 
1842         err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus);
1843         if (err < 0)
1844                 return err;
1845 
1846         memset(&ac97, 0, sizeof(ac97));
1847         ac97.private_data = codec;
1848 
1849         for (i = 0; i < codec->num_of_codecs; i++) {
1850                 ac97.num = i;
1851                 err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i]);
1852                 if (err < 0) {
1853                         dev_err(codec->card->dev,
1854                                    "ali mixer %d creating error.\n", i);
1855                         if (i == 0)
1856                                 return err;
1857                         codec->num_of_codecs = 1;
1858                         break;
1859                 }
1860         }
1861 
1862         if (codec->spdif_support) {
1863                 for (idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1864                         err = snd_ctl_add(codec->card,
1865                                           snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1866                         if (err < 0)
1867                                 return err;
1868                 }
1869         }
1870         return 0;
1871 }
1872 
1873 #ifdef CONFIG_PM_SLEEP
1874 static int ali_suspend(struct device *dev)
1875 {
1876         struct pci_dev *pci = to_pci_dev(dev);
1877         struct snd_card *card = dev_get_drvdata(dev);
1878         struct snd_ali *chip = card->private_data;
1879         struct snd_ali_image *im;
1880         int i, j;
1881 
1882         im = chip->image;
1883         if (!im)
1884                 return 0;
1885 
1886         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1887         for (i = 0; i < chip->num_of_codecs; i++) {
1888                 snd_pcm_suspend_all(chip->pcm[i]);
1889                 snd_ac97_suspend(chip->ac97[i]);
1890         }
1891 
1892         spin_lock_irq(&chip->reg_lock);
1893         
1894         im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
1895         /* im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START)); */
1896         im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
1897         
1898         /* disable all IRQ bits */
1899         outl(0, ALI_REG(chip, ALI_MISCINT));
1900         
1901         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1902                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
1903                         continue;
1904                 im->regs[i] = inl(ALI_REG(chip, i*4));
1905         }
1906         
1907         for (i = 0; i < ALI_CHANNELS; i++) {
1908                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1909                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1910                         im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
1911         }
1912 
1913         /* stop all HW channel */
1914         outl(0xffffffff, ALI_REG(chip, ALI_STOP));
1915 
1916         spin_unlock_irq(&chip->reg_lock);
1917 
1918         pci_disable_device(pci);
1919         pci_save_state(pci);
1920         pci_set_power_state(pci, PCI_D3hot);
1921         return 0;
1922 }
1923 
1924 static int ali_resume(struct device *dev)
1925 {
1926         struct pci_dev *pci = to_pci_dev(dev);
1927         struct snd_card *card = dev_get_drvdata(dev);
1928         struct snd_ali *chip = card->private_data;
1929         struct snd_ali_image *im;
1930         int i, j;
1931 
1932         im = chip->image;
1933         if (!im)
1934                 return 0;
1935 
1936         pci_set_power_state(pci, PCI_D0);
1937         pci_restore_state(pci);
1938         if (pci_enable_device(pci) < 0) {
1939                 dev_err(dev, "pci_enable_device failed, disabling device\n");
1940                 snd_card_disconnect(card);
1941                 return -EIO;
1942         }
1943         pci_set_master(pci);
1944 
1945         spin_lock_irq(&chip->reg_lock);
1946         
1947         for (i = 0; i < ALI_CHANNELS; i++) {
1948                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1949                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1950                         outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
1951         }
1952         
1953         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1954                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) ||
1955                     (i*4 == ALI_START))
1956                         continue;
1957                 outl(im->regs[i], ALI_REG(chip, i*4));
1958         }
1959         
1960         /* start HW channel */
1961         outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
1962         /* restore IRQ enable bits */
1963         outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
1964         
1965         spin_unlock_irq(&chip->reg_lock);
1966 
1967         for (i = 0 ; i < chip->num_of_codecs; i++)
1968                 snd_ac97_resume(chip->ac97[i]);
1969         
1970         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1971         return 0;
1972 }
1973 
1974 static SIMPLE_DEV_PM_OPS(ali_pm, ali_suspend, ali_resume);
1975 #define ALI_PM_OPS      &ali_pm
1976 #else
1977 #define ALI_PM_OPS      NULL
1978 #endif /* CONFIG_PM_SLEEP */
1979 
1980 static int snd_ali_free(struct snd_ali * codec)
1981 {
1982         if (codec->hw_initialized)
1983                 snd_ali_disable_address_interrupt(codec);
1984         if (codec->irq >= 0)
1985                 free_irq(codec->irq, codec);
1986         if (codec->port)
1987                 pci_release_regions(codec->pci);
1988         pci_disable_device(codec->pci);
1989 #ifdef CONFIG_PM_SLEEP
1990         kfree(codec->image);
1991 #endif
1992         pci_dev_put(codec->pci_m1533);
1993         pci_dev_put(codec->pci_m7101);
1994         kfree(codec);
1995         return 0;
1996 }
1997 
1998 static int snd_ali_chip_init(struct snd_ali *codec)
1999 {
2000         unsigned int legacy;
2001         unsigned char temp;
2002         struct pci_dev *pci_dev;
2003 
2004         dev_dbg(codec->card->dev, "chip initializing ...\n");
2005 
2006         if (snd_ali_reset_5451(codec)) {
2007                 dev_err(codec->card->dev, "ali_chip_init: reset 5451 error.\n");
2008                 return -1;
2009         }
2010 
2011         if (codec->revision == ALI_5451_V02) {
2012                 pci_dev = codec->pci_m1533;
2013                 pci_read_config_byte(pci_dev, 0x59, &temp);
2014                 temp |= 0x80;
2015                 pci_write_config_byte(pci_dev, 0x59, temp);
2016         
2017                 pci_dev = codec->pci_m7101;
2018                 pci_read_config_byte(pci_dev, 0xb8, &temp);
2019                 temp |= 0x20;
2020                 pci_write_config_byte(pci_dev, 0xB8, temp);
2021         }
2022 
2023         pci_read_config_dword(codec->pci, 0x44, &legacy);
2024         legacy &= 0xff00ff00;
2025         legacy |= 0x000800aa;
2026         pci_write_config_dword(codec->pci, 0x44, legacy);
2027 
2028         outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
2029         outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
2030         outl(0xffffffff, ALI_REG(codec, ALI_AINT));
2031         outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
2032         outb(0x10,       ALI_REG(codec, ALI_MPUR2));
2033 
2034         codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
2035         codec->ac97_ext_status = snd_ali_codec_peek(codec, 0,
2036                                                     AC97_EXTENDED_STATUS);
2037         if (codec->spdif_support) {
2038                 snd_ali_enable_spdif_out(codec);
2039                 codec->spdif_mask = 0x00000002;
2040         }
2041 
2042         codec->num_of_codecs = 1;
2043 
2044         /* secondary codec - modem */
2045         if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
2046                 codec->num_of_codecs++;
2047                 outl(inl(ALI_REG(codec, ALI_SCTRL)) |
2048                      (ALI_SCTRL_LINE_IN2 | ALI_SCTRL_GPIO_IN2 |
2049                       ALI_SCTRL_LINE_OUT_EN),
2050                      ALI_REG(codec, ALI_SCTRL));
2051         }
2052 
2053         dev_dbg(codec->card->dev, "chip initialize succeed.\n");
2054         return 0;
2055 
2056 }
2057 
2058 /* proc for register dump */
2059 static void snd_ali_proc_read(struct snd_info_entry *entry,
2060                               struct snd_info_buffer *buf)
2061 {
2062         struct snd_ali *codec = entry->private_data;
2063         int i;
2064         for (i = 0; i < 256 ; i+= 4)
2065                 snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2066 }
2067 
2068 static void snd_ali_proc_init(struct snd_ali *codec)
2069 {
2070         struct snd_info_entry *entry;
2071         if (!snd_card_proc_new(codec->card, "ali5451", &entry))
2072                 snd_info_set_text_ops(entry, codec, snd_ali_proc_read);
2073 }
2074 
2075 static int snd_ali_resources(struct snd_ali *codec)
2076 {
2077         int err;
2078 
2079         dev_dbg(codec->card->dev, "resources allocation ...\n");
2080         err = pci_request_regions(codec->pci, "ALI 5451");
2081         if (err < 0)
2082                 return err;
2083         codec->port = pci_resource_start(codec->pci, 0);
2084 
2085         if (request_irq(codec->pci->irq, snd_ali_card_interrupt,
2086                         IRQF_SHARED, KBUILD_MODNAME, codec)) {
2087                 dev_err(codec->card->dev, "Unable to request irq.\n");
2088                 return -EBUSY;
2089         }
2090         codec->irq = codec->pci->irq;
2091         dev_dbg(codec->card->dev, "resources allocated.\n");
2092         return 0;
2093 }
2094 static int snd_ali_dev_free(struct snd_device *device)
2095 {
2096         struct snd_ali *codec = device->device_data;
2097         snd_ali_free(codec);
2098         return 0;
2099 }
2100 
2101 static int snd_ali_create(struct snd_card *card,
2102                           struct pci_dev *pci,
2103                           int pcm_streams,
2104                           int spdif_support,
2105                           struct snd_ali **r_ali)
2106 {
2107         struct snd_ali *codec;
2108         int i, err;
2109         unsigned short cmdw;
2110         static struct snd_device_ops ops = {
2111                 .dev_free = snd_ali_dev_free,
2112         };
2113 
2114         *r_ali = NULL;
2115 
2116         dev_dbg(card->dev, "creating ...\n");
2117 
2118         /* enable PCI device */
2119         err = pci_enable_device(pci);
2120         if (err < 0)
2121                 return err;
2122         /* check, if we can restrict PCI DMA transfers to 31 bits */
2123         if (pci_set_dma_mask(pci, DMA_BIT_MASK(31)) < 0 ||
2124             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(31)) < 0) {
2125                 dev_err(card->dev,
2126                         "architecture does not support 31bit PCI busmaster DMA\n");
2127                 pci_disable_device(pci);
2128                 return -ENXIO;
2129         }
2130 
2131         codec = kzalloc(sizeof(*codec), GFP_KERNEL);
2132         if (!codec) {
2133                 pci_disable_device(pci);
2134                 return -ENOMEM;
2135         }
2136 
2137         spin_lock_init(&codec->reg_lock);
2138         spin_lock_init(&codec->voice_alloc);
2139 
2140         codec->card = card;
2141         codec->pci = pci;
2142         codec->irq = -1;
2143         codec->revision = pci->revision;
2144         codec->spdif_support = spdif_support;
2145 
2146         if (pcm_streams < 1)
2147                 pcm_streams = 1;
2148         if (pcm_streams > 32)
2149                 pcm_streams = 32;
2150         
2151         pci_set_master(pci);
2152         pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2153         if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2154                 cmdw |= PCI_COMMAND_IO;
2155                 pci_write_config_word(pci, PCI_COMMAND, cmdw);
2156         }
2157         pci_set_master(pci);
2158         
2159         if (snd_ali_resources(codec)) {
2160                 snd_ali_free(codec);
2161                 return -EBUSY;
2162         }
2163 
2164         synchronize_irq(pci->irq);
2165 
2166         codec->synth.chmap = 0;
2167         codec->synth.chcnt = 0;
2168         codec->spdif_mask = 0;
2169         codec->synth.synthcount = 0;
2170 
2171         if (codec->revision == ALI_5451_V02)
2172                 codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2173         else
2174                 codec->chregs.regs.ac97read = ALI_AC97_READ;
2175         codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2176 
2177         codec->chregs.regs.start  = ALI_START;
2178         codec->chregs.regs.stop   = ALI_STOP;
2179         codec->chregs.regs.aint   = ALI_AINT;
2180         codec->chregs.regs.ainten = ALI_AINTEN;
2181 
2182         codec->chregs.data.start  = 0x00;
2183         codec->chregs.data.stop   = 0x00;
2184         codec->chregs.data.aint   = 0x00;
2185         codec->chregs.data.ainten = 0x00;
2186 
2187         /* M1533: southbridge */
2188         codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2189         if (!codec->pci_m1533) {
2190                 dev_err(card->dev, "cannot find ALi 1533 chip.\n");
2191                 snd_ali_free(codec);
2192                 return -ENODEV;
2193         }
2194         /* M7101: power management */
2195         codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2196         if (!codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2197                 dev_err(card->dev, "cannot find ALi 7101 chip.\n");
2198                 snd_ali_free(codec);
2199                 return -ENODEV;
2200         }
2201 
2202         dev_dbg(card->dev, "snd_device_new is called.\n");
2203         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops);
2204         if (err < 0) {
2205                 snd_ali_free(codec);
2206                 return err;
2207         }
2208 
2209         /* initialise synth voices*/
2210         for (i = 0; i < ALI_CHANNELS; i++)
2211                 codec->synth.voices[i].number = i;
2212 
2213         err = snd_ali_chip_init(codec);
2214         if (err < 0) {
2215                 dev_err(card->dev, "ali create: chip init error.\n");
2216                 return err;
2217         }
2218 
2219 #ifdef CONFIG_PM_SLEEP
2220         codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2221         if (!codec->image)
2222                 dev_warn(card->dev, "can't allocate apm buffer\n");
2223 #endif
2224 
2225         snd_ali_enable_address_interrupt(codec);
2226         codec->hw_initialized = 1;
2227 
2228         *r_ali = codec;
2229         dev_dbg(card->dev, "created.\n");
2230         return 0;
2231 }
2232 
2233 static int snd_ali_probe(struct pci_dev *pci,
2234                          const struct pci_device_id *pci_id)
2235 {
2236         struct snd_card *card;
2237         struct snd_ali *codec;
2238         int err;
2239 
2240         dev_dbg(&pci->dev, "probe ...\n");
2241 
2242         err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2243         if (err < 0)
2244                 return err;
2245 
2246         err = snd_ali_create(card, pci, pcm_channels, spdif, &codec);
2247         if (err < 0)
2248                 goto error;
2249         card->private_data = codec;
2250 
2251         dev_dbg(&pci->dev, "mixer building ...\n");
2252         err = snd_ali_mixer(codec);
2253         if (err < 0)
2254                 goto error;
2255         
2256         dev_dbg(&pci->dev, "pcm building ...\n");
2257         err = snd_ali_build_pcms(codec);
2258         if (err < 0)
2259                 goto error;
2260 
2261         snd_ali_proc_init(codec);
2262 
2263         strcpy(card->driver, "ALI5451");
2264         strcpy(card->shortname, "ALI 5451");
2265         
2266         sprintf(card->longname, "%s at 0x%lx, irq %i",
2267                 card->shortname, codec->port, codec->irq);
2268 
2269         dev_dbg(&pci->dev, "register card.\n");
2270         err = snd_card_register(card);
2271         if (err < 0)
2272                 goto error;
2273 
2274         pci_set_drvdata(pci, card);
2275         return 0;
2276 
2277  error:
2278         snd_card_free(card);
2279         return err;
2280 }
2281 
2282 static void snd_ali_remove(struct pci_dev *pci)
2283 {
2284         snd_card_free(pci_get_drvdata(pci));
2285 }
2286 
2287 static struct pci_driver ali5451_driver = {
2288         .name = KBUILD_MODNAME,
2289         .id_table = snd_ali_ids,
2290         .probe = snd_ali_probe,
2291         .remove = snd_ali_remove,
2292         .driver = {
2293                 .pm = ALI_PM_OPS,
2294         },
2295 };                                
2296 
2297 module_pci_driver(ali5451_driver);
2298 

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