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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 <linux/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         cso %= runtime->buffer_size;
1412         return cso;
1413 }
1414 
1415 
1416 static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1417 {
1418         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1419         struct snd_pcm_runtime *runtime = substream->runtime;
1420         struct snd_ali_voice *pvoice = runtime->private_data;
1421         unsigned int cso;
1422 
1423         spin_lock(&codec->reg_lock);
1424         if (!pvoice->running) {
1425                 spin_unlock(&codec->reg_lock);
1426                 return 0;
1427         }
1428         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1429         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1430         spin_unlock(&codec->reg_lock);
1431 
1432         cso %= runtime->buffer_size;
1433         return cso;
1434 }
1435 
1436 static struct snd_pcm_hardware snd_ali_playback =
1437 {
1438         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1439                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1440                          SNDRV_PCM_INFO_MMAP_VALID |
1441                          SNDRV_PCM_INFO_RESUME |
1442                          SNDRV_PCM_INFO_SYNC_START),
1443         .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1444                          SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1445         .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1446         .rate_min =             4000,
1447         .rate_max =             48000,
1448         .channels_min =         1,
1449         .channels_max =         2,
1450         .buffer_bytes_max =     (256*1024),
1451         .period_bytes_min =     64,
1452         .period_bytes_max =     (256*1024),
1453         .periods_min =          1,
1454         .periods_max =          1024,
1455         .fifo_size =            0,
1456 };
1457 
1458 /*
1459  *  Capture support device description
1460  */
1461 
1462 static struct snd_pcm_hardware snd_ali_capture =
1463 {
1464         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1465                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1466                          SNDRV_PCM_INFO_MMAP_VALID |
1467                          SNDRV_PCM_INFO_RESUME |
1468                          SNDRV_PCM_INFO_SYNC_START),
1469         .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1470                          SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1471         .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1472         .rate_min =             4000,
1473         .rate_max =             48000,
1474         .channels_min =         1,
1475         .channels_max =         2,
1476         .buffer_bytes_max =     (128*1024),
1477         .period_bytes_min =     64,
1478         .period_bytes_max =     (128*1024),
1479         .periods_min =          1,
1480         .periods_max =          1024,
1481         .fifo_size =            0,
1482 };
1483 
1484 static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1485 {
1486         struct snd_ali_voice *pvoice = runtime->private_data;
1487         struct snd_ali *codec;
1488 
1489         if (pvoice) {
1490                 codec = pvoice->codec;
1491                 snd_ali_free_voice(pvoice->codec, pvoice);
1492         }
1493 }
1494 
1495 static int snd_ali_open(struct snd_pcm_substream *substream, int rec,
1496                         int channel, struct snd_pcm_hardware *phw)
1497 {
1498         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1499         struct snd_pcm_runtime *runtime = substream->runtime;
1500         struct snd_ali_voice *pvoice;
1501 
1502         pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec,
1503                                      channel);
1504         if (!pvoice)
1505                 return -EAGAIN;
1506 
1507         pvoice->substream = substream;
1508         runtime->private_data = pvoice;
1509         runtime->private_free = snd_ali_pcm_free_substream;
1510 
1511         runtime->hw = *phw;
1512         snd_pcm_set_sync(substream);
1513         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
1514                                      0, 64*1024);
1515         return 0;
1516 }
1517 
1518 static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1519 {
1520         return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1521 }
1522 
1523 static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1524 {
1525         return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1526 }
1527 
1528 static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1529 {
1530         return 0;
1531 }
1532 
1533 static int snd_ali_close(struct snd_pcm_substream *substream)
1534 {
1535         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1536         struct snd_ali_voice *pvoice = substream->runtime->private_data;
1537 
1538         snd_ali_disable_special_channel(codec,pvoice->number);
1539 
1540         return 0;
1541 }
1542 
1543 static struct snd_pcm_ops snd_ali_playback_ops = {
1544         .open =         snd_ali_playback_open,
1545         .close =        snd_ali_playback_close,
1546         .ioctl =        snd_pcm_lib_ioctl,
1547         .hw_params =    snd_ali_playback_hw_params,
1548         .hw_free =      snd_ali_playback_hw_free,
1549         .prepare =      snd_ali_playback_prepare,
1550         .trigger =      snd_ali_trigger,
1551         .pointer =      snd_ali_playback_pointer,
1552 };
1553 
1554 static struct snd_pcm_ops snd_ali_capture_ops = {
1555         .open =         snd_ali_capture_open,
1556         .close =        snd_ali_close,
1557         .ioctl =        snd_pcm_lib_ioctl,
1558         .hw_params =    snd_ali_hw_params,
1559         .hw_free =      snd_ali_hw_free,
1560         .prepare =      snd_ali_prepare,
1561         .trigger =      snd_ali_trigger,
1562         .pointer =      snd_ali_pointer,
1563 };
1564 
1565 /*
1566  * Modem PCM
1567  */
1568 
1569 static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1570                                  struct snd_pcm_hw_params *hw_params)
1571 {
1572         struct snd_ali *chip = snd_pcm_substream_chip(substream);
1573         unsigned int modem_num = chip->num_of_codecs - 1;
1574         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE,
1575                        params_rate(hw_params));
1576         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1577         return snd_ali_hw_params(substream, hw_params);
1578 }
1579 
1580 static struct snd_pcm_hardware snd_ali_modem =
1581 {
1582         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1583                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1584                          SNDRV_PCM_INFO_MMAP_VALID |
1585                          SNDRV_PCM_INFO_RESUME |
1586                          SNDRV_PCM_INFO_SYNC_START),
1587         .formats =      SNDRV_PCM_FMTBIT_S16_LE,
1588         .rates =        (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000 |
1589                          SNDRV_PCM_RATE_16000),
1590         .rate_min =             8000,
1591         .rate_max =             16000,
1592         .channels_min =         1,
1593         .channels_max =         1,
1594         .buffer_bytes_max =     (256*1024),
1595         .period_bytes_min =     64,
1596         .period_bytes_max =     (256*1024),
1597         .periods_min =          1,
1598         .periods_max =          1024,
1599         .fifo_size =            0,
1600 };
1601 
1602 static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec,
1603                               int channel)
1604 {
1605         static unsigned int rates[] = {8000, 9600, 12000, 16000};
1606         static struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1607                 .count = ARRAY_SIZE(rates),
1608                 .list = rates,
1609                 .mask = 0,
1610         };
1611         int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1612 
1613         if (err)
1614                 return err;
1615         return snd_pcm_hw_constraint_list(substream->runtime, 0,
1616                         SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1617 }
1618 
1619 static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1620 {
1621         return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1622 }
1623 
1624 static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1625 {
1626         return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1627 }
1628 
1629 static struct snd_pcm_ops snd_ali_modem_playback_ops = {
1630         .open =         snd_ali_modem_playback_open,
1631         .close =        snd_ali_close,
1632         .ioctl =        snd_pcm_lib_ioctl,
1633         .hw_params =    snd_ali_modem_hw_params,
1634         .hw_free =      snd_ali_hw_free,
1635         .prepare =      snd_ali_prepare,
1636         .trigger =      snd_ali_trigger,
1637         .pointer =      snd_ali_pointer,
1638 };
1639 
1640 static struct snd_pcm_ops snd_ali_modem_capture_ops = {
1641         .open =         snd_ali_modem_capture_open,
1642         .close =        snd_ali_close,
1643         .ioctl =        snd_pcm_lib_ioctl,
1644         .hw_params =    snd_ali_modem_hw_params,
1645         .hw_free =      snd_ali_hw_free,
1646         .prepare =      snd_ali_prepare,
1647         .trigger =      snd_ali_trigger,
1648         .pointer =      snd_ali_pointer,
1649 };
1650 
1651 
1652 struct ali_pcm_description {
1653         char *name;
1654         unsigned int playback_num;
1655         unsigned int capture_num;
1656         struct snd_pcm_ops *playback_ops;
1657         struct snd_pcm_ops *capture_ops;
1658         unsigned short class;
1659 };
1660 
1661 
1662 static void snd_ali_pcm_free(struct snd_pcm *pcm)
1663 {
1664         struct snd_ali *codec = pcm->private_data;
1665         codec->pcm[pcm->device] = NULL;
1666 }
1667 
1668 
1669 static int snd_ali_pcm(struct snd_ali *codec, int device,
1670                        struct ali_pcm_description *desc)
1671 {
1672         struct snd_pcm *pcm;
1673         int err;
1674 
1675         err = snd_pcm_new(codec->card, desc->name, device,
1676                           desc->playback_num, desc->capture_num, &pcm);
1677         if (err < 0) {
1678                 dev_err(codec->card->dev,
1679                         "snd_ali_pcm: err called snd_pcm_new.\n");
1680                 return err;
1681         }
1682         pcm->private_data = codec;
1683         pcm->private_free = snd_ali_pcm_free;
1684         if (desc->playback_ops)
1685                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1686                                 desc->playback_ops);
1687         if (desc->capture_ops)
1688                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1689                                 desc->capture_ops);
1690 
1691         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1692                                               snd_dma_pci_data(codec->pci),
1693                                               64*1024, 128*1024);
1694 
1695         pcm->info_flags = 0;
1696         pcm->dev_class = desc->class;
1697         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1698         strcpy(pcm->name, desc->name);
1699         codec->pcm[0] = pcm;
1700         return 0;
1701 }
1702 
1703 static struct ali_pcm_description ali_pcms[] = {
1704         { .name = "ALI 5451",
1705           .playback_num = ALI_CHANNELS,
1706           .capture_num = 1,
1707           .playback_ops = &snd_ali_playback_ops,
1708           .capture_ops = &snd_ali_capture_ops
1709         },
1710         { .name = "ALI 5451 modem",
1711           .playback_num = 1,
1712           .capture_num = 1,
1713           .playback_ops = &snd_ali_modem_playback_ops,
1714           .capture_ops = &snd_ali_modem_capture_ops,
1715           .class = SNDRV_PCM_CLASS_MODEM
1716         }
1717 };
1718 
1719 static int snd_ali_build_pcms(struct snd_ali *codec)
1720 {
1721         int i, err;
1722         for (i = 0; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms); i++) {
1723                 err = snd_ali_pcm(codec, i, &ali_pcms[i]);
1724                 if (err < 0)
1725                         return err;
1726         }
1727         return 0;
1728 }
1729 
1730 
1731 #define ALI5451_SPDIF(xname, xindex, value) \
1732 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1733 .info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1734 .put = snd_ali5451_spdif_put, .private_value = value}
1735 
1736 #define snd_ali5451_spdif_info          snd_ctl_boolean_mono_info
1737 
1738 static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol,
1739                                  struct snd_ctl_elem_value *ucontrol)
1740 {
1741         struct snd_ali *codec = kcontrol->private_data;
1742         unsigned int spdif_enable;
1743 
1744         spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1745 
1746         spin_lock_irq(&codec->reg_lock);
1747         switch (kcontrol->private_value) {
1748         case 0:
1749                 spdif_enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1750                 break;
1751         case 1:
1752                 spdif_enable = ((codec->spdif_mask & 0x02) &&
1753                           (codec->spdif_mask & 0x04)) ? 1 : 0;
1754                 break;
1755         case 2:
1756                 spdif_enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1757                 break;
1758         default:
1759                 break;
1760         }
1761         ucontrol->value.integer.value[0] = spdif_enable;
1762         spin_unlock_irq(&codec->reg_lock);
1763         return 0;
1764 }
1765 
1766 static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol,
1767                                  struct snd_ctl_elem_value *ucontrol)
1768 {
1769         struct snd_ali *codec = kcontrol->private_data;
1770         unsigned int change = 0, spdif_enable = 0;
1771 
1772         spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1773 
1774         spin_lock_irq(&codec->reg_lock);
1775         switch (kcontrol->private_value) {
1776         case 0:
1777                 change = (codec->spdif_mask & 0x02) ? 1 : 0;
1778                 change = change ^ spdif_enable;
1779                 if (change) {
1780                         if (spdif_enable) {
1781                                 codec->spdif_mask |= 0x02;
1782                                 snd_ali_enable_spdif_out(codec);
1783                         } else {
1784                                 codec->spdif_mask &= ~(0x02);
1785                                 codec->spdif_mask &= ~(0x04);
1786                                 snd_ali_disable_spdif_out(codec);
1787                         }
1788                 }
1789                 break;
1790         case 1: 
1791                 change = (codec->spdif_mask & 0x04) ? 1 : 0;
1792                 change = change ^ spdif_enable;
1793                 if (change && (codec->spdif_mask & 0x02)) {
1794                         if (spdif_enable) {
1795                                 codec->spdif_mask |= 0x04;
1796                                 snd_ali_enable_spdif_chnout(codec);
1797                         } else {
1798                                 codec->spdif_mask &= ~(0x04);
1799                                 snd_ali_disable_spdif_chnout(codec);
1800                         }
1801                 }
1802                 break;
1803         case 2:
1804                 change = (codec->spdif_mask & 0x01) ? 1 : 0;
1805                 change = change ^ spdif_enable;
1806                 if (change) {
1807                         if (spdif_enable) {
1808                                 codec->spdif_mask |= 0x01;
1809                                 snd_ali_enable_spdif_in(codec);
1810                         } else {
1811                                 codec->spdif_mask &= ~(0x01);
1812                                 snd_ali_disable_spdif_in(codec);
1813                         }
1814                 }
1815                 break;
1816         default:
1817                 break;
1818         }
1819         spin_unlock_irq(&codec->reg_lock);
1820         
1821         return change;
1822 }
1823 
1824 static struct snd_kcontrol_new snd_ali5451_mixer_spdif[] = {
1825         /* spdif aplayback switch */
1826         /* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1827         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1828         /* spdif out to spdif channel */
1829         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1830         /* spdif in from spdif channel */
1831         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1832 };
1833 
1834 static int snd_ali_mixer(struct snd_ali *codec)
1835 {
1836         struct snd_ac97_template ac97;
1837         unsigned int idx;
1838         int i, err;
1839         static struct snd_ac97_bus_ops ops = {
1840                 .write = snd_ali_codec_write,
1841                 .read = snd_ali_codec_read,
1842         };
1843 
1844         err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus);
1845         if (err < 0)
1846                 return err;
1847 
1848         memset(&ac97, 0, sizeof(ac97));
1849         ac97.private_data = codec;
1850 
1851         for (i = 0; i < codec->num_of_codecs; i++) {
1852                 ac97.num = i;
1853                 err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i]);
1854                 if (err < 0) {
1855                         dev_err(codec->card->dev,
1856                                    "ali mixer %d creating error.\n", i);
1857                         if (i == 0)
1858                                 return err;
1859                         codec->num_of_codecs = 1;
1860                         break;
1861                 }
1862         }
1863 
1864         if (codec->spdif_support) {
1865                 for (idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1866                         err = snd_ctl_add(codec->card,
1867                                           snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1868                         if (err < 0)
1869                                 return err;
1870                 }
1871         }
1872         return 0;
1873 }
1874 
1875 #ifdef CONFIG_PM_SLEEP
1876 static int ali_suspend(struct device *dev)
1877 {
1878         struct snd_card *card = dev_get_drvdata(dev);
1879         struct snd_ali *chip = card->private_data;
1880         struct snd_ali_image *im;
1881         int i, j;
1882 
1883         im = chip->image;
1884         if (!im)
1885                 return 0;
1886 
1887         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1888         for (i = 0; i < chip->num_of_codecs; i++) {
1889                 snd_pcm_suspend_all(chip->pcm[i]);
1890                 snd_ac97_suspend(chip->ac97[i]);
1891         }
1892 
1893         spin_lock_irq(&chip->reg_lock);
1894         
1895         im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
1896         /* im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START)); */
1897         im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
1898         
1899         /* disable all IRQ bits */
1900         outl(0, ALI_REG(chip, ALI_MISCINT));
1901         
1902         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1903                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
1904                         continue;
1905                 im->regs[i] = inl(ALI_REG(chip, i*4));
1906         }
1907         
1908         for (i = 0; i < ALI_CHANNELS; i++) {
1909                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1910                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1911                         im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
1912         }
1913 
1914         /* stop all HW channel */
1915         outl(0xffffffff, ALI_REG(chip, ALI_STOP));
1916 
1917         spin_unlock_irq(&chip->reg_lock);
1918         return 0;
1919 }
1920 
1921 static int ali_resume(struct device *dev)
1922 {
1923         struct snd_card *card = dev_get_drvdata(dev);
1924         struct snd_ali *chip = card->private_data;
1925         struct snd_ali_image *im;
1926         int i, j;
1927 
1928         im = chip->image;
1929         if (!im)
1930                 return 0;
1931 
1932         spin_lock_irq(&chip->reg_lock);
1933         
1934         for (i = 0; i < ALI_CHANNELS; i++) {
1935                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1936                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1937                         outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
1938         }
1939         
1940         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1941                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) ||
1942                     (i*4 == ALI_START))
1943                         continue;
1944                 outl(im->regs[i], ALI_REG(chip, i*4));
1945         }
1946         
1947         /* start HW channel */
1948         outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
1949         /* restore IRQ enable bits */
1950         outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
1951         
1952         spin_unlock_irq(&chip->reg_lock);
1953 
1954         for (i = 0 ; i < chip->num_of_codecs; i++)
1955                 snd_ac97_resume(chip->ac97[i]);
1956         
1957         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1958         return 0;
1959 }
1960 
1961 static SIMPLE_DEV_PM_OPS(ali_pm, ali_suspend, ali_resume);
1962 #define ALI_PM_OPS      &ali_pm
1963 #else
1964 #define ALI_PM_OPS      NULL
1965 #endif /* CONFIG_PM_SLEEP */
1966 
1967 static int snd_ali_free(struct snd_ali * codec)
1968 {
1969         if (codec->hw_initialized)
1970                 snd_ali_disable_address_interrupt(codec);
1971         if (codec->irq >= 0)
1972                 free_irq(codec->irq, codec);
1973         if (codec->port)
1974                 pci_release_regions(codec->pci);
1975         pci_disable_device(codec->pci);
1976 #ifdef CONFIG_PM_SLEEP
1977         kfree(codec->image);
1978 #endif
1979         pci_dev_put(codec->pci_m1533);
1980         pci_dev_put(codec->pci_m7101);
1981         kfree(codec);
1982         return 0;
1983 }
1984 
1985 static int snd_ali_chip_init(struct snd_ali *codec)
1986 {
1987         unsigned int legacy;
1988         unsigned char temp;
1989         struct pci_dev *pci_dev;
1990 
1991         dev_dbg(codec->card->dev, "chip initializing ...\n");
1992 
1993         if (snd_ali_reset_5451(codec)) {
1994                 dev_err(codec->card->dev, "ali_chip_init: reset 5451 error.\n");
1995                 return -1;
1996         }
1997 
1998         if (codec->revision == ALI_5451_V02) {
1999                 pci_dev = codec->pci_m1533;
2000                 pci_read_config_byte(pci_dev, 0x59, &temp);
2001                 temp |= 0x80;
2002                 pci_write_config_byte(pci_dev, 0x59, temp);
2003         
2004                 pci_dev = codec->pci_m7101;
2005                 pci_read_config_byte(pci_dev, 0xb8, &temp);
2006                 temp |= 0x20;
2007                 pci_write_config_byte(pci_dev, 0xB8, temp);
2008         }
2009 
2010         pci_read_config_dword(codec->pci, 0x44, &legacy);
2011         legacy &= 0xff00ff00;
2012         legacy |= 0x000800aa;
2013         pci_write_config_dword(codec->pci, 0x44, legacy);
2014 
2015         outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
2016         outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
2017         outl(0xffffffff, ALI_REG(codec, ALI_AINT));
2018         outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
2019         outb(0x10,       ALI_REG(codec, ALI_MPUR2));
2020 
2021         codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
2022         codec->ac97_ext_status = snd_ali_codec_peek(codec, 0,
2023                                                     AC97_EXTENDED_STATUS);
2024         if (codec->spdif_support) {
2025                 snd_ali_enable_spdif_out(codec);
2026                 codec->spdif_mask = 0x00000002;
2027         }
2028 
2029         codec->num_of_codecs = 1;
2030 
2031         /* secondary codec - modem */
2032         if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
2033                 codec->num_of_codecs++;
2034                 outl(inl(ALI_REG(codec, ALI_SCTRL)) |
2035                      (ALI_SCTRL_LINE_IN2 | ALI_SCTRL_GPIO_IN2 |
2036                       ALI_SCTRL_LINE_OUT_EN),
2037                      ALI_REG(codec, ALI_SCTRL));
2038         }
2039 
2040         dev_dbg(codec->card->dev, "chip initialize succeed.\n");
2041         return 0;
2042 
2043 }
2044 
2045 /* proc for register dump */
2046 static void snd_ali_proc_read(struct snd_info_entry *entry,
2047                               struct snd_info_buffer *buf)
2048 {
2049         struct snd_ali *codec = entry->private_data;
2050         int i;
2051         for (i = 0; i < 256 ; i+= 4)
2052                 snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2053 }
2054 
2055 static void snd_ali_proc_init(struct snd_ali *codec)
2056 {
2057         struct snd_info_entry *entry;
2058         if (!snd_card_proc_new(codec->card, "ali5451", &entry))
2059                 snd_info_set_text_ops(entry, codec, snd_ali_proc_read);
2060 }
2061 
2062 static int snd_ali_resources(struct snd_ali *codec)
2063 {
2064         int err;
2065 
2066         dev_dbg(codec->card->dev, "resources allocation ...\n");
2067         err = pci_request_regions(codec->pci, "ALI 5451");
2068         if (err < 0)
2069                 return err;
2070         codec->port = pci_resource_start(codec->pci, 0);
2071 
2072         if (request_irq(codec->pci->irq, snd_ali_card_interrupt,
2073                         IRQF_SHARED, KBUILD_MODNAME, codec)) {
2074                 dev_err(codec->card->dev, "Unable to request irq.\n");
2075                 return -EBUSY;
2076         }
2077         codec->irq = codec->pci->irq;
2078         dev_dbg(codec->card->dev, "resources allocated.\n");
2079         return 0;
2080 }
2081 static int snd_ali_dev_free(struct snd_device *device)
2082 {
2083         struct snd_ali *codec = device->device_data;
2084         snd_ali_free(codec);
2085         return 0;
2086 }
2087 
2088 static int snd_ali_create(struct snd_card *card,
2089                           struct pci_dev *pci,
2090                           int pcm_streams,
2091                           int spdif_support,
2092                           struct snd_ali **r_ali)
2093 {
2094         struct snd_ali *codec;
2095         int i, err;
2096         unsigned short cmdw;
2097         static struct snd_device_ops ops = {
2098                 .dev_free = snd_ali_dev_free,
2099         };
2100 
2101         *r_ali = NULL;
2102 
2103         dev_dbg(card->dev, "creating ...\n");
2104 
2105         /* enable PCI device */
2106         err = pci_enable_device(pci);
2107         if (err < 0)
2108                 return err;
2109         /* check, if we can restrict PCI DMA transfers to 31 bits */
2110         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(31)) < 0 ||
2111             dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(31)) < 0) {
2112                 dev_err(card->dev,
2113                         "architecture does not support 31bit PCI busmaster DMA\n");
2114                 pci_disable_device(pci);
2115                 return -ENXIO;
2116         }
2117 
2118         codec = kzalloc(sizeof(*codec), GFP_KERNEL);
2119         if (!codec) {
2120                 pci_disable_device(pci);
2121                 return -ENOMEM;
2122         }
2123 
2124         spin_lock_init(&codec->reg_lock);
2125         spin_lock_init(&codec->voice_alloc);
2126 
2127         codec->card = card;
2128         codec->pci = pci;
2129         codec->irq = -1;
2130         codec->revision = pci->revision;
2131         codec->spdif_support = spdif_support;
2132 
2133         if (pcm_streams < 1)
2134                 pcm_streams = 1;
2135         if (pcm_streams > 32)
2136                 pcm_streams = 32;
2137         
2138         pci_set_master(pci);
2139         pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2140         if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2141                 cmdw |= PCI_COMMAND_IO;
2142                 pci_write_config_word(pci, PCI_COMMAND, cmdw);
2143         }
2144         pci_set_master(pci);
2145         
2146         if (snd_ali_resources(codec)) {
2147                 snd_ali_free(codec);
2148                 return -EBUSY;
2149         }
2150 
2151         synchronize_irq(pci->irq);
2152 
2153         codec->synth.chmap = 0;
2154         codec->synth.chcnt = 0;
2155         codec->spdif_mask = 0;
2156         codec->synth.synthcount = 0;
2157 
2158         if (codec->revision == ALI_5451_V02)
2159                 codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2160         else
2161                 codec->chregs.regs.ac97read = ALI_AC97_READ;
2162         codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2163 
2164         codec->chregs.regs.start  = ALI_START;
2165         codec->chregs.regs.stop   = ALI_STOP;
2166         codec->chregs.regs.aint   = ALI_AINT;
2167         codec->chregs.regs.ainten = ALI_AINTEN;
2168 
2169         codec->chregs.data.start  = 0x00;
2170         codec->chregs.data.stop   = 0x00;
2171         codec->chregs.data.aint   = 0x00;
2172         codec->chregs.data.ainten = 0x00;
2173 
2174         /* M1533: southbridge */
2175         codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2176         if (!codec->pci_m1533) {
2177                 dev_err(card->dev, "cannot find ALi 1533 chip.\n");
2178                 snd_ali_free(codec);
2179                 return -ENODEV;
2180         }
2181         /* M7101: power management */
2182         codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2183         if (!codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2184                 dev_err(card->dev, "cannot find ALi 7101 chip.\n");
2185                 snd_ali_free(codec);
2186                 return -ENODEV;
2187         }
2188 
2189         dev_dbg(card->dev, "snd_device_new is called.\n");
2190         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops);
2191         if (err < 0) {
2192                 snd_ali_free(codec);
2193                 return err;
2194         }
2195 
2196         /* initialise synth voices*/
2197         for (i = 0; i < ALI_CHANNELS; i++)
2198                 codec->synth.voices[i].number = i;
2199 
2200         err = snd_ali_chip_init(codec);
2201         if (err < 0) {
2202                 dev_err(card->dev, "ali create: chip init error.\n");
2203                 return err;
2204         }
2205 
2206 #ifdef CONFIG_PM_SLEEP
2207         codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2208         if (!codec->image)
2209                 dev_warn(card->dev, "can't allocate apm buffer\n");
2210 #endif
2211 
2212         snd_ali_enable_address_interrupt(codec);
2213         codec->hw_initialized = 1;
2214 
2215         *r_ali = codec;
2216         dev_dbg(card->dev, "created.\n");
2217         return 0;
2218 }
2219 
2220 static int snd_ali_probe(struct pci_dev *pci,
2221                          const struct pci_device_id *pci_id)
2222 {
2223         struct snd_card *card;
2224         struct snd_ali *codec;
2225         int err;
2226 
2227         dev_dbg(&pci->dev, "probe ...\n");
2228 
2229         err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2230         if (err < 0)
2231                 return err;
2232 
2233         err = snd_ali_create(card, pci, pcm_channels, spdif, &codec);
2234         if (err < 0)
2235                 goto error;
2236         card->private_data = codec;
2237 
2238         dev_dbg(&pci->dev, "mixer building ...\n");
2239         err = snd_ali_mixer(codec);
2240         if (err < 0)
2241                 goto error;
2242         
2243         dev_dbg(&pci->dev, "pcm building ...\n");
2244         err = snd_ali_build_pcms(codec);
2245         if (err < 0)
2246                 goto error;
2247 
2248         snd_ali_proc_init(codec);
2249 
2250         strcpy(card->driver, "ALI5451");
2251         strcpy(card->shortname, "ALI 5451");
2252         
2253         sprintf(card->longname, "%s at 0x%lx, irq %i",
2254                 card->shortname, codec->port, codec->irq);
2255 
2256         dev_dbg(&pci->dev, "register card.\n");
2257         err = snd_card_register(card);
2258         if (err < 0)
2259                 goto error;
2260 
2261         pci_set_drvdata(pci, card);
2262         return 0;
2263 
2264  error:
2265         snd_card_free(card);
2266         return err;
2267 }
2268 
2269 static void snd_ali_remove(struct pci_dev *pci)
2270 {
2271         snd_card_free(pci_get_drvdata(pci));
2272 }
2273 
2274 static struct pci_driver ali5451_driver = {
2275         .name = KBUILD_MODNAME,
2276         .id_table = snd_ali_ids,
2277         .probe = snd_ali_probe,
2278         .remove = snd_ali_remove,
2279         .driver = {
2280                 .pm = ALI_PM_OPS,
2281         },
2282 };                                
2283 
2284 module_pci_driver(ali5451_driver);
2285 

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