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Linux/sound/pci/ali5451/ali5451.c

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  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  *  Debug part definitions
 69  */
 70 
 71 /* #define ALI_DEBUG */
 72 
 73 #ifdef ALI_DEBUG
 74 #define snd_ali_printk(format, args...) printk(KERN_DEBUG format, ##args);
 75 #else
 76 #define snd_ali_printk(format, args...)
 77 #endif
 78 
 79 /*
 80  *  Constants definition
 81  */
 82 
 83 #define DEVICE_ID_ALI5451       ((PCI_VENDOR_ID_AL<<16)|PCI_DEVICE_ID_AL_M5451)
 84 
 85 
 86 #define ALI_CHANNELS            32
 87 
 88 #define ALI_PCM_IN_CHANNEL      31
 89 #define ALI_SPDIF_IN_CHANNEL    19
 90 #define ALI_SPDIF_OUT_CHANNEL   15
 91 #define ALI_CENTER_CHANNEL      24
 92 #define ALI_LEF_CHANNEL         23
 93 #define ALI_SURR_LEFT_CHANNEL   26
 94 #define ALI_SURR_RIGHT_CHANNEL  25
 95 #define ALI_MODEM_IN_CHANNEL    21
 96 #define ALI_MODEM_OUT_CHANNEL   20
 97 
 98 #define SNDRV_ALI_VOICE_TYPE_PCM        01
 99 #define SNDRV_ALI_VOICE_TYPE_OTH        02
100 
101 #define ALI_5451_V02            0x02
102 
103 /*
104  *  Direct Registers
105  */
106 
107 #define ALI_LEGACY_DMAR0        0x00  /* ADR0 */
108 #define ALI_LEGACY_DMAR4        0x04  /* CNT0 */
109 #define ALI_LEGACY_DMAR11       0x0b  /* MOD  */
110 #define ALI_LEGACY_DMAR15       0x0f  /* MMR  */
111 #define ALI_MPUR0               0x20
112 #define ALI_MPUR1               0x21
113 #define ALI_MPUR2               0x22
114 #define ALI_MPUR3               0x23
115 
116 #define ALI_AC97_WRITE          0x40
117 #define ALI_AC97_READ           0x44
118 
119 #define ALI_SCTRL               0x48
120 #define   ALI_SPDIF_OUT_ENABLE          0x20
121 #define   ALI_SCTRL_LINE_IN2            (1 << 9)
122 #define   ALI_SCTRL_GPIO_IN2            (1 << 13)
123 #define   ALI_SCTRL_LINE_OUT_EN         (1 << 20)
124 #define   ALI_SCTRL_GPIO_OUT_EN         (1 << 23)
125 #define   ALI_SCTRL_CODEC1_READY        (1 << 24)
126 #define   ALI_SCTRL_CODEC2_READY        (1 << 25)
127 #define ALI_AC97_GPIO           0x4c
128 #define   ALI_AC97_GPIO_ENABLE          0x8000
129 #define   ALI_AC97_GPIO_DATA_SHIFT      16
130 #define ALI_SPDIF_CS            0x70
131 #define ALI_SPDIF_CTRL          0x74
132 #define   ALI_SPDIF_IN_FUNC_ENABLE      0x02
133 #define   ALI_SPDIF_IN_CH_STATUS        0x40
134 #define   ALI_SPDIF_OUT_CH_STATUS       0xbf
135 #define ALI_START               0x80
136 #define ALI_STOP                0x84
137 #define ALI_CSPF                0x90
138 #define ALI_AINT                0x98
139 #define ALI_GC_CIR              0xa0
140         #define ENDLP_IE                0x00001000
141         #define MIDLP_IE                0x00002000
142 #define ALI_AINTEN              0xa4
143 #define ALI_VOLUME              0xa8
144 #define ALI_SBDELTA_DELTA_R     0xac
145 #define ALI_MISCINT             0xb0
146         #define ADDRESS_IRQ             0x00000020
147         #define TARGET_REACHED          0x00008000
148         #define MIXER_OVERFLOW          0x00000800
149         #define MIXER_UNDERFLOW         0x00000400
150         #define GPIO_IRQ                0x01000000
151 #define ALI_SBBL_SBCL           0xc0
152 #define ALI_SBCTRL_SBE2R_SBDD   0xc4
153 #define ALI_STIMER              0xc8
154 #define ALI_GLOBAL_CONTROL      0xd4
155 #define   ALI_SPDIF_OUT_SEL_PCM         0x00000400 /* bit 10 */
156 #define   ALI_SPDIF_IN_SUPPORT          0x00000800 /* bit 11 */
157 #define   ALI_SPDIF_OUT_CH_ENABLE       0x00008000 /* bit 15 */
158 #define   ALI_SPDIF_IN_CH_ENABLE        0x00080000 /* bit 19 */
159 #define   ALI_PCM_IN_ENABLE             0x80000000 /* bit 31 */
160 
161 #define ALI_CSO_ALPHA_FMS       0xe0
162 #define ALI_LBA                 0xe4
163 #define ALI_ESO_DELTA           0xe8
164 #define ALI_GVSEL_PAN_VOC_CTRL_EC       0xf0
165 #define ALI_EBUF1               0xf4
166 #define ALI_EBUF2               0xf8
167 
168 #define ALI_REG(codec, x) ((codec)->port + x)
169 
170 #define MAX_CODECS 2
171 
172 
173 struct snd_ali;
174 struct snd_ali_voice;
175 
176 struct snd_ali_channel_control {
177         /* register data */
178         struct REGDATA {
179                 unsigned int start;
180                 unsigned int stop;
181                 unsigned int aint;
182                 unsigned int ainten;
183         } data;
184                 
185         /* register addresses */
186         struct REGS {
187                 unsigned int start;
188                 unsigned int stop;
189                 unsigned int aint;
190                 unsigned int ainten;
191                 unsigned int ac97read;
192                 unsigned int ac97write;
193         } regs;
194 
195 };
196 
197 struct snd_ali_voice {
198         unsigned int number;
199         unsigned int use :1,
200                 pcm :1,
201                 midi :1,
202                 mode :1,
203                 synth :1,
204                 running :1;
205 
206         /* PCM data */
207         struct snd_ali *codec;
208         struct snd_pcm_substream *substream;
209         struct snd_ali_voice *extra;
210         
211         int eso;                /* final ESO value for channel */
212         int count;              /* runtime->period_size */
213 
214         /* --- */
215 
216         void *private_data;
217         void (*private_free)(void *private_data);
218 };
219 
220 
221 struct snd_alidev {
222 
223         struct snd_ali_voice voices[ALI_CHANNELS];      
224 
225         unsigned int    chcnt;                  /* num of opened channels */
226         unsigned int    chmap;                  /* bitmap for opened channels */
227         unsigned int synthcount;
228 
229 };
230 
231 
232 #define ALI_GLOBAL_REGS         56
233 #define ALI_CHANNEL_REGS        8
234 struct snd_ali_image {
235         u32 regs[ALI_GLOBAL_REGS];
236         u32 channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
237 };
238 
239 
240 struct snd_ali {
241         int             irq;
242         unsigned long   port;
243         unsigned char   revision;
244 
245         unsigned int hw_initialized :1;
246         unsigned int spdif_support :1;
247 
248         struct pci_dev  *pci;
249         struct pci_dev  *pci_m1533;
250         struct pci_dev  *pci_m7101;
251 
252         struct snd_card *card;
253         struct snd_pcm  *pcm[MAX_CODECS];
254         struct snd_alidev       synth;
255         struct snd_ali_channel_control chregs;
256 
257         /* S/PDIF Mask */
258         unsigned int    spdif_mask;
259 
260         unsigned int spurious_irq_count;
261         unsigned int spurious_irq_max_delta;
262 
263         unsigned int num_of_codecs;
264 
265         struct snd_ac97_bus *ac97_bus;
266         struct snd_ac97 *ac97[MAX_CODECS];
267         unsigned short  ac97_ext_id;
268         unsigned short  ac97_ext_status;
269 
270         spinlock_t      reg_lock;
271         spinlock_t      voice_alloc;
272 
273 #ifdef CONFIG_PM
274         struct snd_ali_image *image;
275 #endif
276 };
277 
278 static DEFINE_PCI_DEVICE_TABLE(snd_ali_ids) = {
279         {PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5451), 0, 0, 0},
280         {0, }
281 };
282 MODULE_DEVICE_TABLE(pci, snd_ali_ids);
283 
284 static void snd_ali_clear_voices(struct snd_ali *, unsigned int, unsigned int);
285 static unsigned short snd_ali_codec_peek(struct snd_ali *, int, unsigned short);
286 static void snd_ali_codec_poke(struct snd_ali *, int, unsigned short,
287                                unsigned short);
288 
289 /*
290  *  AC97 ACCESS
291  */
292 
293 static inline unsigned int snd_ali_5451_peek(struct snd_ali *codec,
294                                              unsigned int port)
295 {
296         return (unsigned int)inl(ALI_REG(codec, port)); 
297 }
298 
299 static inline void snd_ali_5451_poke(struct snd_ali *codec,
300                                      unsigned int port,
301                                      unsigned int val)
302 {
303         outl((unsigned int)val, ALI_REG(codec, port));
304 }
305 
306 static int snd_ali_codec_ready(struct snd_ali *codec,
307                                unsigned int port)
308 {
309         unsigned long end_time;
310         unsigned int res;
311         
312         end_time = jiffies + msecs_to_jiffies(250);
313 
314         for (;;) {
315                 res = snd_ali_5451_peek(codec,port);
316                 if (!(res & 0x8000))
317                         return 0;
318                 if (!time_after_eq(end_time, jiffies))
319                         break;
320                 schedule_timeout_uninterruptible(1);
321         }
322 
323         snd_ali_5451_poke(codec, port, res & ~0x8000);
324         snd_printdd("ali_codec_ready: codec is not ready.\n ");
325         return -EIO;
326 }
327 
328 static int snd_ali_stimer_ready(struct snd_ali *codec)
329 {
330         unsigned long end_time;
331         unsigned long dwChk1,dwChk2;
332         
333         dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
334         end_time = jiffies + msecs_to_jiffies(250);
335 
336         for (;;) {
337                 dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
338                 if (dwChk2 != dwChk1)
339                         return 0;
340                 if (!time_after_eq(end_time, jiffies))
341                         break;
342                 schedule_timeout_uninterruptible(1);
343         }
344 
345         snd_printk(KERN_ERR "ali_stimer_read: stimer is not ready.\n");
346         return -EIO;
347 }
348 
349 static void snd_ali_codec_poke(struct snd_ali *codec,int secondary,
350                                unsigned short reg,
351                                unsigned short val)
352 {
353         unsigned int dwVal;
354         unsigned int port;
355 
356         if (reg >= 0x80) {
357                 snd_printk(KERN_ERR "ali_codec_poke: reg(%xh) invalid.\n", reg);
358                 return;
359         }
360 
361         port = codec->chregs.regs.ac97write;
362 
363         if (snd_ali_codec_ready(codec, port) < 0)
364                 return;
365         if (snd_ali_stimer_ready(codec) < 0)
366                 return;
367 
368         dwVal  = (unsigned int) (reg & 0xff);
369         dwVal |= 0x8000 | (val << 16);
370         if (secondary)
371                 dwVal |= 0x0080;
372         if (codec->revision == ALI_5451_V02)
373                 dwVal |= 0x0100;
374 
375         snd_ali_5451_poke(codec, port, dwVal);
376 
377         return ;
378 }
379 
380 static unsigned short snd_ali_codec_peek(struct snd_ali *codec,
381                                          int secondary,
382                                          unsigned short reg)
383 {
384         unsigned int dwVal;
385         unsigned int port;
386 
387         if (reg >= 0x80) {
388                 snd_printk(KERN_ERR "ali_codec_peek: reg(%xh) invalid.\n", reg);
389                 return ~0;
390         }
391 
392         port = codec->chregs.regs.ac97read;
393 
394         if (snd_ali_codec_ready(codec, port) < 0)
395                 return ~0;
396         if (snd_ali_stimer_ready(codec) < 0)
397                 return ~0;
398 
399         dwVal  = (unsigned int) (reg & 0xff);
400         dwVal |= 0x8000;                                /* bit 15*/
401         if (secondary)
402                 dwVal |= 0x0080;
403 
404         snd_ali_5451_poke(codec, port, dwVal);
405 
406         if (snd_ali_stimer_ready(codec) < 0)
407                 return ~0;
408         if (snd_ali_codec_ready(codec, port) < 0)
409                 return ~0;
410         
411         return (snd_ali_5451_peek(codec, port) & 0xffff0000) >> 16;
412 }
413 
414 static void snd_ali_codec_write(struct snd_ac97 *ac97,
415                                 unsigned short reg,
416                                 unsigned short val )
417 {
418         struct snd_ali *codec = ac97->private_data;
419 
420         snd_ali_printk("codec_write: reg=%xh data=%xh.\n", reg, val);
421         if (reg == AC97_GPIO_STATUS) {
422                 outl((val << ALI_AC97_GPIO_DATA_SHIFT) | ALI_AC97_GPIO_ENABLE,
423                      ALI_REG(codec, ALI_AC97_GPIO));
424                 return;
425         }
426         snd_ali_codec_poke(codec, ac97->num, reg, val);
427         return ;
428 }
429 
430 
431 static unsigned short snd_ali_codec_read(struct snd_ac97 *ac97,
432                                          unsigned short reg)
433 {
434         struct snd_ali *codec = ac97->private_data;
435 
436         snd_ali_printk("codec_read reg=%xh.\n", reg);
437         return snd_ali_codec_peek(codec, ac97->num, reg);
438 }
439 
440 /*
441  *      AC97 Reset
442  */
443 
444 static int snd_ali_reset_5451(struct snd_ali *codec)
445 {
446         struct pci_dev *pci_dev;
447         unsigned short wCount, wReg;
448         unsigned int   dwVal;
449         
450         pci_dev = codec->pci_m1533;
451         if (pci_dev) {
452                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
453                 pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
454                 udelay(5000);
455                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
456                 pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
457                 udelay(5000);
458         }
459         
460         pci_dev = codec->pci;
461         pci_read_config_dword(pci_dev, 0x44, &dwVal);
462         pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
463         udelay(500);
464         pci_read_config_dword(pci_dev, 0x44, &dwVal);
465         pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
466         udelay(5000);
467         
468         wCount = 200;
469         while(wCount--) {
470                 wReg = snd_ali_codec_peek(codec, 0, AC97_POWERDOWN);
471                 if ((wReg & 0x000f) == 0x000f)
472                         return 0;
473                 udelay(5000);
474         }
475 
476         /* non-fatal if you have a non PM capable codec */
477         /* snd_printk(KERN_WARNING "ali5451: reset time out\n"); */
478         return 0;
479 }
480 
481 /*
482  *  ALI 5451 Controller
483  */
484 
485 static void snd_ali_enable_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_disable_special_channel(struct snd_ali *codec,
496                                             unsigned int channel)
497 {
498         unsigned long dwVal;
499 
500         dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
501         dwVal &= ~(1 << (channel & 0x0000001f));
502         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
503 }
504 
505 static void snd_ali_enable_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_address_interrupt(struct snd_ali *codec)
516 {
517         unsigned int gc;
518 
519         gc  = inl(ALI_REG(codec, ALI_GC_CIR));
520         gc &= ~ENDLP_IE;
521         gc &= ~MIDLP_IE;
522         outl(gc, ALI_REG(codec, ALI_GC_CIR));
523 }
524 
525 static void snd_ali_disable_voice_irq(struct snd_ali *codec,
526                                       unsigned int channel)
527 {
528         unsigned int mask;
529         struct snd_ali_channel_control *pchregs = &(codec->chregs);
530 
531         snd_ali_printk("disable_voice_irq channel=%d\n",channel);
532 
533         mask = 1 << (channel & 0x1f);
534         pchregs->data.ainten  = inl(ALI_REG(codec, pchregs->regs.ainten));
535         pchregs->data.ainten &= ~mask;
536         outl(pchregs->data.ainten, ALI_REG(codec, pchregs->regs.ainten));
537 }
538 
539 static int snd_ali_alloc_pcm_channel(struct snd_ali *codec, int channel)
540 {
541         unsigned int idx =  channel & 0x1f;
542 
543         if (codec->synth.chcnt >= ALI_CHANNELS){
544                 snd_printk(KERN_ERR
545                            "ali_alloc_pcm_channel: no free channels.\n");
546                 return -1;
547         }
548 
549         if (!(codec->synth.chmap & (1 << idx))) {
550                 codec->synth.chmap |= 1 << idx;
551                 codec->synth.chcnt++;
552                 snd_ali_printk("alloc_pcm_channel no. %d.\n",idx);
553                 return idx;
554         }
555         return -1;
556 }
557 
558 static int snd_ali_find_free_channel(struct snd_ali * codec, int rec)
559 {
560         int idx;
561         int result = -1;
562 
563         snd_ali_printk("find_free_channel: for %s\n",rec ? "rec" : "pcm");
564 
565         /* recording */
566         if (rec) {
567                 if (codec->spdif_support &&
568                     (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
569                      ALI_SPDIF_IN_SUPPORT))
570                         idx = ALI_SPDIF_IN_CHANNEL;
571                 else
572                         idx = ALI_PCM_IN_CHANNEL;
573 
574                 result = snd_ali_alloc_pcm_channel(codec, idx);
575                 if (result >= 0)
576                         return result;
577                 else {
578                         snd_printk(KERN_ERR "ali_find_free_channel: "
579                                    "record channel is busy now.\n");
580                         return -1;
581                 }
582         }
583 
584         /* playback... */
585         if (codec->spdif_support &&
586             (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
587              ALI_SPDIF_OUT_CH_ENABLE)) {
588                 idx = ALI_SPDIF_OUT_CHANNEL;
589                 result = snd_ali_alloc_pcm_channel(codec, idx);
590                 if (result >= 0)
591                         return result;
592                 else
593                         snd_printk(KERN_ERR "ali_find_free_channel: "
594                                    "S/PDIF out channel is in busy now.\n");
595         }
596 
597         for (idx = 0; idx < ALI_CHANNELS; idx++) {
598                 result = snd_ali_alloc_pcm_channel(codec, idx);
599                 if (result >= 0)
600                         return result;
601         }
602         snd_printk(KERN_ERR "ali_find_free_channel: no free channels.\n");
603         return -1;
604 }
605 
606 static void snd_ali_free_channel_pcm(struct snd_ali *codec, int channel)
607 {
608         unsigned int idx = channel & 0x0000001f;
609 
610         snd_ali_printk("free_channel_pcm channel=%d\n",channel);
611 
612         if (channel < 0 || channel >= ALI_CHANNELS)
613                 return;
614 
615         if (!(codec->synth.chmap & (1 << idx))) {
616                 snd_printk(KERN_ERR "ali_free_channel_pcm: "
617                            "channel %d is not in use.\n", channel);
618                 return;
619         } else {
620                 codec->synth.chmap &= ~(1 << idx);
621                 codec->synth.chcnt--;
622         }
623 }
624 
625 static void snd_ali_stop_voice(struct snd_ali *codec, unsigned int channel)
626 {
627         unsigned int mask = 1 << (channel & 0x1f);
628 
629         snd_ali_printk("stop_voice: channel=%d\n",channel);
630         outl(mask, ALI_REG(codec, codec->chregs.regs.stop));
631 }
632 
633 /*
634  *    S/PDIF Part
635  */
636 
637 static void snd_ali_delay(struct snd_ali *codec,int interval)
638 {
639         unsigned long  begintimer,currenttimer;
640 
641         begintimer   = inl(ALI_REG(codec, ALI_STIMER));
642         currenttimer = inl(ALI_REG(codec, ALI_STIMER));
643 
644         while (currenttimer < begintimer + interval) {
645                 if (snd_ali_stimer_ready(codec) < 0)
646                         break;
647                 currenttimer = inl(ALI_REG(codec,  ALI_STIMER));
648                 cpu_relax();
649         }
650 }
651 
652 static void snd_ali_detect_spdif_rate(struct snd_ali *codec)
653 {
654         u16 wval;
655         u16 count = 0;
656         u8  bval, R1 = 0, R2;
657 
658         bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
659         bval |= 0x1F;
660         outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL + 1));
661 
662         while ((R1 < 0x0b || R1 > 0x0e) && R1 != 0x12 && count <= 50000) {
663                 count ++;
664                 snd_ali_delay(codec, 6);
665                 bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
666                 R1 = bval & 0x1F;
667         }
668 
669         if (count > 50000) {
670                 snd_printk(KERN_ERR "ali_detect_spdif_rate: timeout!\n");
671                 return;
672         }
673 
674         for (count = 0; count <= 50000; count++) {
675                 snd_ali_delay(codec, 6);
676                 bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
677                 R2 = bval & 0x1F;
678                 if (R2 != R1)
679                         R1 = R2;
680                 else
681                         break;
682         }
683 
684         if (count > 50000) {
685                 snd_printk(KERN_ERR "ali_detect_spdif_rate: timeout!\n");
686                 return;
687         }
688 
689         if (R2 >= 0x0b && R2 <= 0x0e) {
690                 wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
691                 wval &= 0xe0f0;
692                 wval |= (0x09 << 8) | 0x05;
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 | 0x02, ALI_REG(codec, ALI_SPDIF_CS + 3));
697         } else if (R2 == 0x12) {
698                 wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
699                 wval &= 0xe0f0;
700                 wval |= (0x0e << 8) | 0x08;
701                 outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
702 
703                 bval  = inb(ALI_REG(codec,ALI_SPDIF_CS + 3)) & 0xf0;
704                 outb(bval | 0x03, ALI_REG(codec, ALI_SPDIF_CS + 3));
705         }
706 }
707 
708 static unsigned int snd_ali_get_spdif_in_rate(struct snd_ali *codec)
709 {
710         u32     dwRate;
711         u8      bval;
712 
713         bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
714         bval &= 0x7f;
715         bval |= 0x40;
716         outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL));
717 
718         snd_ali_detect_spdif_rate(codec);
719 
720         bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3));
721         bval &= 0x0f;
722 
723         switch (bval) {
724         case 0: dwRate = 44100; break;
725         case 1: dwRate = 48000; break;
726         case 2: dwRate = 32000; break;
727         default: dwRate = 0; break;
728         }
729 
730         return dwRate;
731 }
732 
733 static void snd_ali_enable_spdif_in(struct snd_ali *codec)
734 {       
735         unsigned int dwVal;
736 
737         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
738         dwVal |= ALI_SPDIF_IN_SUPPORT;
739         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
740 
741         dwVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
742         dwVal |= 0x02;
743         outb(dwVal, ALI_REG(codec, ALI_SPDIF_CTRL));
744 
745         snd_ali_enable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
746 }
747 
748 static void snd_ali_disable_spdif_in(struct snd_ali *codec)
749 {
750         unsigned int dwVal;
751         
752         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
753         dwVal &= ~ALI_SPDIF_IN_SUPPORT;
754         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
755         
756         snd_ali_disable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);   
757 }
758 
759 
760 static void snd_ali_set_spdif_out_rate(struct snd_ali *codec, unsigned int rate)
761 {
762         unsigned char  bVal;
763         unsigned int  dwRate;
764         
765         switch (rate) {
766         case 32000: dwRate = 0x300; break;
767         case 48000: dwRate = 0x200; break;
768         default: dwRate = 0; break;
769         }
770         
771         bVal  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
772         bVal &= (unsigned char)(~(1<<6));
773         
774         bVal |= 0x80;           /* select right */
775         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
776         outb(dwRate | 0x20, ALI_REG(codec, ALI_SPDIF_CS + 2));
777         
778         bVal &= ~0x80;  /* select left */
779         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
780         outw(rate | 0x10, ALI_REG(codec, ALI_SPDIF_CS + 2));
781 }
782 
783 static void snd_ali_enable_spdif_out(struct snd_ali *codec)
784 {
785         unsigned short wVal;
786         unsigned char bVal;
787         struct pci_dev *pci_dev;
788 
789         pci_dev = codec->pci_m1533;
790         if (pci_dev == NULL)
791                 return;
792         pci_read_config_byte(pci_dev, 0x61, &bVal);
793         bVal |= 0x40;
794         pci_write_config_byte(pci_dev, 0x61, bVal);
795         pci_read_config_byte(pci_dev, 0x7d, &bVal);
796         bVal |= 0x01;
797         pci_write_config_byte(pci_dev, 0x7d, bVal);
798 
799         pci_read_config_byte(pci_dev, 0x7e, &bVal);
800         bVal &= (~0x20);
801         bVal |= 0x10;
802         pci_write_config_byte(pci_dev, 0x7e, bVal);
803 
804         bVal = inb(ALI_REG(codec, ALI_SCTRL));
805         outb(bVal | ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
806 
807         bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
808         outb(bVal & ALI_SPDIF_OUT_CH_STATUS, ALI_REG(codec, ALI_SPDIF_CTRL));
809    
810         wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
811         wVal |= ALI_SPDIF_OUT_SEL_PCM;
812         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
813         snd_ali_disable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
814 }
815 
816 static void snd_ali_enable_spdif_chnout(struct snd_ali *codec)
817 {
818         unsigned short wVal;
819 
820         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
821         wVal &= ~ALI_SPDIF_OUT_SEL_PCM;
822         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
823 /*
824         wVal = inw(ALI_REG(codec, ALI_SPDIF_CS));
825         if (flag & ALI_SPDIF_OUT_NON_PCM)
826                 wVal |= 0x0002;
827         else    
828                 wVal &= (~0x0002);
829         outw(wVal, ALI_REG(codec, ALI_SPDIF_CS));
830 */
831         snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
832 }
833 
834 static void snd_ali_disable_spdif_chnout(struct snd_ali *codec)
835 {
836         unsigned short wVal;
837 
838         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
839         wVal |= ALI_SPDIF_OUT_SEL_PCM;
840         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
841 
842         snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
843 }
844 
845 static void snd_ali_disable_spdif_out(struct snd_ali *codec)
846 {
847         unsigned char  bVal;
848 
849         bVal = inb(ALI_REG(codec, ALI_SCTRL));
850         outb(bVal & ~ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
851 
852         snd_ali_disable_spdif_chnout(codec);
853 }
854 
855 static void snd_ali_update_ptr(struct snd_ali *codec, int channel)
856 {
857         struct snd_ali_voice *pvoice;
858         struct snd_pcm_runtime *runtime;
859         struct snd_ali_channel_control *pchregs;
860         unsigned int old, mask;
861 #ifdef ALI_DEBUG
862         unsigned int temp, cspf;
863 #endif
864 
865         pchregs = &(codec->chregs);
866 
867         /* check if interrupt occurred for channel */
868         old  = pchregs->data.aint;
869         mask = 1U << (channel & 0x1f);
870 
871         if (!(old & mask))
872                 return;
873 
874         pvoice = &codec->synth.voices[channel];
875         runtime = pvoice->substream->runtime;
876 
877         udelay(100);
878         spin_lock(&codec->reg_lock);
879 
880         if (pvoice->pcm && pvoice->substream) {
881                 /* pcm interrupt */
882 #ifdef ALI_DEBUG
883                 outb((u8)(pvoice->number), ALI_REG(codec, ALI_GC_CIR));
884                 temp = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
885                 cspf = (inl(ALI_REG(codec, ALI_CSPF)) & mask) == mask;
886 #endif
887                 if (pvoice->running) {
888                         snd_ali_printk("update_ptr: cso=%4.4x cspf=%d.\n",
889                                        (u16)temp, cspf);
890                         spin_unlock(&codec->reg_lock);
891                         snd_pcm_period_elapsed(pvoice->substream);
892                         spin_lock(&codec->reg_lock);
893                 } else {
894                         snd_ali_stop_voice(codec, channel);
895                         snd_ali_disable_voice_irq(codec, channel);
896                 }       
897         } else if (codec->synth.voices[channel].synth) {
898                 /* synth interrupt */
899         } else if (codec->synth.voices[channel].midi) {
900                 /* midi interrupt */
901         } else {
902                 /* unknown interrupt */
903                 snd_ali_stop_voice(codec, channel);
904                 snd_ali_disable_voice_irq(codec, channel);
905         }
906         spin_unlock(&codec->reg_lock);
907         outl(mask,ALI_REG(codec,pchregs->regs.aint));
908         pchregs->data.aint = old & (~mask);
909 }
910 
911 static irqreturn_t snd_ali_card_interrupt(int irq, void *dev_id)
912 {
913         struct snd_ali  *codec = dev_id;
914         int channel;
915         unsigned int audio_int;
916         struct snd_ali_channel_control *pchregs;
917 
918         if (codec == NULL || !codec->hw_initialized)
919                 return IRQ_NONE;
920 
921         audio_int = inl(ALI_REG(codec, ALI_MISCINT));
922         if (!audio_int)
923                 return IRQ_NONE;
924 
925         pchregs = &(codec->chregs);
926         if (audio_int & ADDRESS_IRQ) {
927                 /* get interrupt status for all channels */
928                 pchregs->data.aint = inl(ALI_REG(codec, pchregs->regs.aint));
929                 for (channel = 0; channel < ALI_CHANNELS; channel++)
930                         snd_ali_update_ptr(codec, channel);
931         }
932         outl((TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
933                 ALI_REG(codec, ALI_MISCINT));
934 
935         return IRQ_HANDLED;
936 }
937 
938 
939 static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec,
940                                                  int type, int rec, int channel)
941 {
942         struct snd_ali_voice *pvoice;
943         int idx;
944 
945         snd_ali_printk("alloc_voice: type=%d rec=%d\n", type, rec);
946 
947         spin_lock_irq(&codec->voice_alloc);
948         if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
949                 idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
950                         snd_ali_find_free_channel(codec,rec);
951                 if (idx < 0) {
952                         snd_printk(KERN_ERR "ali_alloc_voice: err.\n");
953                         spin_unlock_irq(&codec->voice_alloc);
954                         return NULL;
955                 }
956                 pvoice = &(codec->synth.voices[idx]);
957                 pvoice->codec = codec;
958                 pvoice->use = 1;
959                 pvoice->pcm = 1;
960                 pvoice->mode = rec;
961                 spin_unlock_irq(&codec->voice_alloc);
962                 return pvoice;
963         }
964         spin_unlock_irq(&codec->voice_alloc);
965         return NULL;
966 }
967 
968 
969 static void snd_ali_free_voice(struct snd_ali * codec,
970                                struct snd_ali_voice *pvoice)
971 {
972         void (*private_free)(void *);
973         void *private_data;
974 
975         snd_ali_printk("free_voice: channel=%d\n",pvoice->number);
976         if (!pvoice->use)
977                 return;
978         snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
979         spin_lock_irq(&codec->voice_alloc);
980         private_free = pvoice->private_free;
981         private_data = pvoice->private_data;
982         pvoice->private_free = NULL;
983         pvoice->private_data = NULL;
984         if (pvoice->pcm)
985                 snd_ali_free_channel_pcm(codec, pvoice->number);
986         pvoice->use = pvoice->pcm = pvoice->synth = 0;
987         pvoice->substream = NULL;
988         spin_unlock_irq(&codec->voice_alloc);
989         if (private_free)
990                 private_free(private_data);
991 }
992 
993 
994 static void snd_ali_clear_voices(struct snd_ali *codec,
995                                  unsigned int v_min,
996                                  unsigned int v_max)
997 {
998         unsigned int i;
999 
1000         for (i = v_min; i <= v_max; i++) {
1001                 snd_ali_stop_voice(codec, i);
1002                 snd_ali_disable_voice_irq(codec, i);
1003         }
1004 }
1005 
1006 static void snd_ali_write_voice_regs(struct snd_ali *codec,
1007                          unsigned int Channel,
1008                          unsigned int LBA,
1009                          unsigned int CSO,
1010                          unsigned int ESO,
1011                          unsigned int DELTA,
1012                          unsigned int ALPHA_FMS,
1013                          unsigned int GVSEL,
1014                          unsigned int PAN,
1015                          unsigned int VOL,
1016                          unsigned int CTRL,
1017                          unsigned int EC)
1018 {
1019         unsigned int ctlcmds[4];
1020         
1021         outb((unsigned char)(Channel & 0x001f), ALI_REG(codec, ALI_GC_CIR));
1022 
1023         ctlcmds[0] =  (CSO << 16) | (ALPHA_FMS & 0x0000ffff);
1024         ctlcmds[1] =  LBA;
1025         ctlcmds[2] =  (ESO << 16) | (DELTA & 0x0ffff);
1026         ctlcmds[3] =  (GVSEL << 31) |
1027                       ((PAN & 0x0000007f) << 24) |
1028                       ((VOL & 0x000000ff) << 16) |
1029                       ((CTRL & 0x0000000f) << 12) |
1030                       (EC & 0x00000fff);
1031 
1032         outb(Channel, ALI_REG(codec, ALI_GC_CIR));
1033 
1034         outl(ctlcmds[0], ALI_REG(codec, ALI_CSO_ALPHA_FMS));
1035         outl(ctlcmds[1], ALI_REG(codec, ALI_LBA));
1036         outl(ctlcmds[2], ALI_REG(codec, ALI_ESO_DELTA));
1037         outl(ctlcmds[3], ALI_REG(codec, ALI_GVSEL_PAN_VOC_CTRL_EC));
1038 
1039         outl(0x30000000, ALI_REG(codec, ALI_EBUF1));    /* Still Mode */
1040         outl(0x30000000, ALI_REG(codec, ALI_EBUF2));    /* Still Mode */
1041 }
1042 
1043 static unsigned int snd_ali_convert_rate(unsigned int rate, int rec)
1044 {
1045         unsigned int delta;
1046 
1047         if (rate < 4000)
1048                 rate = 4000;
1049         if (rate > 48000)
1050                 rate = 48000;
1051 
1052         if (rec) {
1053                 if (rate == 44100)
1054                         delta = 0x116a;
1055                 else if (rate == 8000)
1056                         delta = 0x6000;
1057                 else if (rate == 48000)
1058                         delta = 0x1000;
1059                 else
1060                         delta = ((48000 << 12) / rate) & 0x0000ffff;
1061         } else {
1062                 if (rate == 44100)
1063                         delta = 0xeb3;
1064                 else if (rate == 8000)
1065                         delta = 0x2ab;
1066                 else if (rate == 48000)
1067                         delta = 0x1000;
1068                 else 
1069                         delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
1070         }
1071 
1072         return delta;
1073 }
1074 
1075 static unsigned int snd_ali_control_mode(struct snd_pcm_substream *substream)
1076 {
1077         unsigned int CTRL;
1078         struct snd_pcm_runtime *runtime = substream->runtime;
1079 
1080         /* set ctrl mode
1081            CTRL default: 8-bit (unsigned) mono, loop mode enabled
1082          */
1083         CTRL = 0x00000001;
1084         if (snd_pcm_format_width(runtime->format) == 16)
1085                 CTRL |= 0x00000008;     /* 16-bit data */
1086         if (!snd_pcm_format_unsigned(runtime->format))
1087                 CTRL |= 0x00000002;     /* signed data */
1088         if (runtime->channels > 1)
1089                 CTRL |= 0x00000004;     /* stereo data */
1090         return CTRL;
1091 }
1092 
1093 /*
1094  *  PCM part
1095  */
1096 
1097 static int snd_ali_trigger(struct snd_pcm_substream *substream,
1098                                int cmd)
1099                                     
1100 {
1101         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1102         struct snd_pcm_substream *s;
1103         unsigned int what, whati, capture_flag;
1104         struct snd_ali_voice *pvoice, *evoice;
1105         unsigned int val;
1106         int do_start;
1107 
1108         switch (cmd) {
1109         case SNDRV_PCM_TRIGGER_START:
1110         case SNDRV_PCM_TRIGGER_RESUME:
1111                 do_start = 1;
1112                 break;
1113         case SNDRV_PCM_TRIGGER_STOP:
1114         case SNDRV_PCM_TRIGGER_SUSPEND:
1115                 do_start = 0;
1116                 break;
1117         default:
1118                 return -EINVAL;
1119         }
1120 
1121         what = whati = capture_flag = 0;
1122         snd_pcm_group_for_each_entry(s, substream) {
1123                 if ((struct snd_ali *) snd_pcm_substream_chip(s) == codec) {
1124                         pvoice = s->runtime->private_data;
1125                         evoice = pvoice->extra;
1126                         what |= 1 << (pvoice->number & 0x1f);
1127                         if (evoice == NULL)
1128                                 whati |= 1 << (pvoice->number & 0x1f);
1129                         else {
1130                                 whati |= 1 << (evoice->number & 0x1f);
1131                                 what |= 1 << (evoice->number & 0x1f);
1132                         }
1133                         if (do_start) {
1134                                 pvoice->running = 1;
1135                                 if (evoice != NULL)
1136                                         evoice->running = 1;
1137                         } else {
1138                                 pvoice->running = 0;
1139                                 if (evoice != NULL)
1140                                         evoice->running = 0;
1141                         }
1142                         snd_pcm_trigger_done(s, substream);
1143                         if (pvoice->mode)
1144                                 capture_flag = 1;
1145                 }
1146         }
1147         spin_lock(&codec->reg_lock);
1148         if (!do_start)
1149                 outl(what, ALI_REG(codec, ALI_STOP));
1150         val = inl(ALI_REG(codec, ALI_AINTEN));
1151         if (do_start)
1152                 val |= whati;
1153         else
1154                 val &= ~whati;
1155         outl(val, ALI_REG(codec, ALI_AINTEN));
1156         if (do_start)
1157                 outl(what, ALI_REG(codec, ALI_START));
1158         snd_ali_printk("trigger: what=%xh whati=%xh\n", what, whati);
1159         spin_unlock(&codec->reg_lock);
1160 
1161         return 0;
1162 }
1163 
1164 static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
1165                                       struct snd_pcm_hw_params *hw_params)
1166 {
1167         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1168         struct snd_pcm_runtime *runtime = substream->runtime;
1169         struct snd_ali_voice *pvoice = runtime->private_data;
1170         struct snd_ali_voice *evoice = pvoice->extra;
1171         int err;
1172 
1173         err = snd_pcm_lib_malloc_pages(substream,
1174                                        params_buffer_bytes(hw_params));
1175         if (err < 0)
1176                 return err;
1177         
1178         /* voice management */
1179 
1180         if (params_buffer_size(hw_params) / 2 !=
1181             params_period_size(hw_params)) {
1182                 if (!evoice) {
1183                         evoice = snd_ali_alloc_voice(codec,
1184                                                      SNDRV_ALI_VOICE_TYPE_PCM,
1185                                                      0, -1);
1186                         if (!evoice)
1187                                 return -ENOMEM;
1188                         pvoice->extra = evoice;
1189                         evoice->substream = substream;
1190                 }
1191         } else {
1192                 if (evoice) {
1193                         snd_ali_free_voice(codec, evoice);
1194                         pvoice->extra = evoice = NULL;
1195                 }
1196         }
1197 
1198         return 0;
1199 }
1200 
1201 static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
1202 {
1203         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1204         struct snd_pcm_runtime *runtime = substream->runtime;
1205         struct snd_ali_voice *pvoice = runtime->private_data;
1206         struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
1207 
1208         snd_pcm_lib_free_pages(substream);
1209         if (evoice) {
1210                 snd_ali_free_voice(codec, evoice);
1211                 pvoice->extra = NULL;
1212         }
1213         return 0;
1214 }
1215 
1216 static int snd_ali_hw_params(struct snd_pcm_substream *substream,
1217                              struct snd_pcm_hw_params *hw_params)
1218 {
1219         return snd_pcm_lib_malloc_pages(substream,
1220                                         params_buffer_bytes(hw_params));
1221 }
1222 
1223 static int snd_ali_hw_free(struct snd_pcm_substream *substream)
1224 {
1225         return snd_pcm_lib_free_pages(substream);
1226 }
1227 
1228 static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
1229 {
1230         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1231         struct snd_pcm_runtime *runtime = substream->runtime;
1232         struct snd_ali_voice *pvoice = runtime->private_data;
1233         struct snd_ali_voice *evoice = pvoice->extra;
1234 
1235         unsigned int LBA;
1236         unsigned int Delta;
1237         unsigned int ESO;
1238         unsigned int CTRL;
1239         unsigned int GVSEL;
1240         unsigned int PAN;
1241         unsigned int VOL;
1242         unsigned int EC;
1243         
1244         snd_ali_printk("playback_prepare ...\n");
1245 
1246         spin_lock_irq(&codec->reg_lock);        
1247         
1248         /* set Delta (rate) value */
1249         Delta = snd_ali_convert_rate(runtime->rate, 0);
1250 
1251         if (pvoice->number == ALI_SPDIF_IN_CHANNEL || 
1252             pvoice->number == ALI_PCM_IN_CHANNEL)
1253                 snd_ali_disable_special_channel(codec, pvoice->number);
1254         else if (codec->spdif_support &&
1255                  (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
1256                   ALI_SPDIF_OUT_CH_ENABLE)
1257                  && pvoice->number == ALI_SPDIF_OUT_CHANNEL) {
1258                 snd_ali_set_spdif_out_rate(codec, runtime->rate);
1259                 Delta = 0x1000;
1260         }
1261         
1262         /* set Loop Back Address */
1263         LBA = runtime->dma_addr;
1264 
1265         /* set interrupt count size */
1266         pvoice->count = runtime->period_size;
1267 
1268         /* set target ESO for channel */
1269         pvoice->eso = runtime->buffer_size; 
1270 
1271         snd_ali_printk("playback_prepare: eso=%xh count=%xh\n",
1272                        pvoice->eso, pvoice->count);
1273 
1274         /* set ESO to capture first MIDLP interrupt */
1275         ESO = pvoice->eso -1;
1276         /* set ctrl mode */
1277         CTRL = snd_ali_control_mode(substream);
1278 
1279         GVSEL = 1;
1280         PAN = 0;
1281         VOL = 0;
1282         EC = 0;
1283         snd_ali_printk("playback_prepare:\n");
1284         snd_ali_printk("ch=%d, Rate=%d Delta=%xh,GVSEL=%xh,PAN=%xh,CTRL=%xh\n",
1285                        pvoice->number,runtime->rate,Delta,GVSEL,PAN,CTRL);
1286         snd_ali_write_voice_regs(codec,
1287                                  pvoice->number,
1288                                  LBA,
1289                                  0,     /* cso */
1290                                  ESO,
1291                                  Delta,
1292                                  0,     /* alpha */
1293                                  GVSEL,
1294                                  PAN,
1295                                  VOL,
1296                                  CTRL,
1297                                  EC);
1298         if (evoice) {
1299                 evoice->count = pvoice->count;
1300                 evoice->eso = pvoice->count << 1;
1301                 ESO = evoice->eso - 1;
1302                 snd_ali_write_voice_regs(codec,
1303                                          evoice->number,
1304                                          LBA,
1305                                          0,     /* cso */
1306                                          ESO,
1307                                          Delta,
1308                                          0,     /* alpha */
1309                                          GVSEL,
1310                                          0x7f,
1311                                          0x3ff,
1312                                          CTRL,
1313                                          EC);
1314         }
1315         spin_unlock_irq(&codec->reg_lock);
1316         return 0;
1317 }
1318 
1319 
1320 static int snd_ali_prepare(struct snd_pcm_substream *substream)
1321 {
1322         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1323         struct snd_pcm_runtime *runtime = substream->runtime;
1324         struct snd_ali_voice *pvoice = runtime->private_data;
1325         unsigned int LBA;
1326         unsigned int Delta;
1327         unsigned int ESO;
1328         unsigned int CTRL;
1329         unsigned int GVSEL;
1330         unsigned int PAN;
1331         unsigned int VOL;
1332         unsigned int EC;
1333         u8       bValue;
1334 
1335         spin_lock_irq(&codec->reg_lock);
1336 
1337         snd_ali_printk("ali_prepare...\n");
1338 
1339         snd_ali_enable_special_channel(codec,pvoice->number);
1340 
1341         Delta = (pvoice->number == ALI_MODEM_IN_CHANNEL ||
1342                  pvoice->number == ALI_MODEM_OUT_CHANNEL) ? 
1343                 0x1000 : snd_ali_convert_rate(runtime->rate, pvoice->mode);
1344 
1345         /* Prepare capture intr channel */
1346         if (pvoice->number == ALI_SPDIF_IN_CHANNEL) {
1347 
1348                 unsigned int rate;
1349                 
1350                 spin_unlock_irq(&codec->reg_lock);
1351                 if (codec->revision != ALI_5451_V02)
1352                         return -1;
1353 
1354                 rate = snd_ali_get_spdif_in_rate(codec);
1355                 if (rate == 0) {
1356                         snd_printk(KERN_WARNING "ali_capture_preapre: "
1357                                    "spdif rate detect err!\n");
1358                         rate = 48000;
1359                 }
1360                 spin_lock_irq(&codec->reg_lock);
1361                 bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
1362                 if (bValue & 0x10) {
1363                         outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
1364                         printk(KERN_WARNING "clear SPDIF parity error flag.\n");
1365                 }
1366 
1367                 if (rate != 48000)
1368                         Delta = ((rate << 12) / runtime->rate) & 0x00ffff;
1369         }
1370 
1371         /* set target ESO for channel  */
1372         pvoice->eso = runtime->buffer_size; 
1373 
1374         /* set interrupt count size  */
1375         pvoice->count = runtime->period_size;
1376 
1377         /* set Loop Back Address  */
1378         LBA = runtime->dma_addr;
1379 
1380         /* set ESO to capture first MIDLP interrupt  */
1381         ESO = pvoice->eso - 1;
1382         CTRL = snd_ali_control_mode(substream);
1383         GVSEL = 0;
1384         PAN = 0x00;
1385         VOL = 0x00;
1386         EC = 0;
1387 
1388         snd_ali_write_voice_regs(    codec,
1389                                      pvoice->number,
1390                                      LBA,
1391                                      0, /* cso */
1392                                      ESO,
1393                                      Delta,
1394                                      0, /* alpha */
1395                                      GVSEL,
1396                                      PAN,
1397                                      VOL,
1398                                      CTRL,
1399                                      EC);
1400 
1401         spin_unlock_irq(&codec->reg_lock);
1402 
1403         return 0;
1404 }
1405 
1406 
1407 static snd_pcm_uframes_t
1408 snd_ali_playback_pointer(struct snd_pcm_substream *substream)
1409 {
1410         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1411         struct snd_pcm_runtime *runtime = substream->runtime;
1412         struct snd_ali_voice *pvoice = runtime->private_data;
1413         unsigned int cso;
1414 
1415         spin_lock(&codec->reg_lock);
1416         if (!pvoice->running) {
1417                 spin_unlock(&codec->reg_lock);
1418                 return 0;
1419         }
1420         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1421         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1422         spin_unlock(&codec->reg_lock);
1423         snd_ali_printk("playback pointer returned cso=%xh.\n", cso);
1424 
1425         return cso;
1426 }
1427 
1428 
1429 static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1430 {
1431         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1432         struct snd_pcm_runtime *runtime = substream->runtime;
1433         struct snd_ali_voice *pvoice = runtime->private_data;
1434         unsigned int cso;
1435 
1436         spin_lock(&codec->reg_lock);
1437         if (!pvoice->running) {
1438                 spin_unlock(&codec->reg_lock);
1439                 return 0;
1440         }
1441         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1442         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1443         spin_unlock(&codec->reg_lock);
1444 
1445         return cso;
1446 }
1447 
1448 static struct snd_pcm_hardware snd_ali_playback =
1449 {
1450         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1451                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1452                          SNDRV_PCM_INFO_MMAP_VALID |
1453                          SNDRV_PCM_INFO_RESUME |
1454                          SNDRV_PCM_INFO_SYNC_START),
1455         .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1456                          SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1457         .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1458         .rate_min =             4000,
1459         .rate_max =             48000,
1460         .channels_min =         1,
1461         .channels_max =         2,
1462         .buffer_bytes_max =     (256*1024),
1463         .period_bytes_min =     64,
1464         .period_bytes_max =     (256*1024),
1465         .periods_min =          1,
1466         .periods_max =          1024,
1467         .fifo_size =            0,
1468 };
1469 
1470 /*
1471  *  Capture support device description
1472  */
1473 
1474 static struct snd_pcm_hardware snd_ali_capture =
1475 {
1476         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1477                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1478                          SNDRV_PCM_INFO_MMAP_VALID |
1479                          SNDRV_PCM_INFO_RESUME |
1480                          SNDRV_PCM_INFO_SYNC_START),
1481         .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1482                          SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1483         .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1484         .rate_min =             4000,
1485         .rate_max =             48000,
1486         .channels_min =         1,
1487         .channels_max =         2,
1488         .buffer_bytes_max =     (128*1024),
1489         .period_bytes_min =     64,
1490         .period_bytes_max =     (128*1024),
1491         .periods_min =          1,
1492         .periods_max =          1024,
1493         .fifo_size =            0,
1494 };
1495 
1496 static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1497 {
1498         struct snd_ali_voice *pvoice = runtime->private_data;
1499         struct snd_ali *codec;
1500 
1501         if (pvoice) {
1502                 codec = pvoice->codec;
1503                 snd_ali_free_voice(pvoice->codec, pvoice);
1504         }
1505 }
1506 
1507 static int snd_ali_open(struct snd_pcm_substream *substream, int rec,
1508                         int channel, struct snd_pcm_hardware *phw)
1509 {
1510         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1511         struct snd_pcm_runtime *runtime = substream->runtime;
1512         struct snd_ali_voice *pvoice;
1513 
1514         pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec,
1515                                      channel);
1516         if (!pvoice)
1517                 return -EAGAIN;
1518 
1519         pvoice->substream = substream;
1520         runtime->private_data = pvoice;
1521         runtime->private_free = snd_ali_pcm_free_substream;
1522 
1523         runtime->hw = *phw;
1524         snd_pcm_set_sync(substream);
1525         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
1526                                      0, 64*1024);
1527         return 0;
1528 }
1529 
1530 static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1531 {
1532         return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1533 }
1534 
1535 static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1536 {
1537         return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1538 }
1539 
1540 static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1541 {
1542         return 0;
1543 }
1544 
1545 static int snd_ali_close(struct snd_pcm_substream *substream)
1546 {
1547         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1548         struct snd_ali_voice *pvoice = substream->runtime->private_data;
1549 
1550         snd_ali_disable_special_channel(codec,pvoice->number);
1551 
1552         return 0;
1553 }
1554 
1555 static struct snd_pcm_ops snd_ali_playback_ops = {
1556         .open =         snd_ali_playback_open,
1557         .close =        snd_ali_playback_close,
1558         .ioctl =        snd_pcm_lib_ioctl,
1559         .hw_params =    snd_ali_playback_hw_params,
1560         .hw_free =      snd_ali_playback_hw_free,
1561         .prepare =      snd_ali_playback_prepare,
1562         .trigger =      snd_ali_trigger,
1563         .pointer =      snd_ali_playback_pointer,
1564 };
1565 
1566 static struct snd_pcm_ops snd_ali_capture_ops = {
1567         .open =         snd_ali_capture_open,
1568         .close =        snd_ali_close,
1569         .ioctl =        snd_pcm_lib_ioctl,
1570         .hw_params =    snd_ali_hw_params,
1571         .hw_free =      snd_ali_hw_free,
1572         .prepare =      snd_ali_prepare,
1573         .trigger =      snd_ali_trigger,
1574         .pointer =      snd_ali_pointer,
1575 };
1576 
1577 /*
1578  * Modem PCM
1579  */
1580 
1581 static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1582                                  struct snd_pcm_hw_params *hw_params)
1583 {
1584         struct snd_ali *chip = snd_pcm_substream_chip(substream);
1585         unsigned int modem_num = chip->num_of_codecs - 1;
1586         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE,
1587                        params_rate(hw_params));
1588         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1589         return snd_ali_hw_params(substream, hw_params);
1590 }
1591 
1592 static struct snd_pcm_hardware snd_ali_modem =
1593 {
1594         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1595                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1596                          SNDRV_PCM_INFO_MMAP_VALID |
1597                          SNDRV_PCM_INFO_RESUME |
1598                          SNDRV_PCM_INFO_SYNC_START),
1599         .formats =      SNDRV_PCM_FMTBIT_S16_LE,
1600         .rates =        (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000 |
1601                          SNDRV_PCM_RATE_16000),
1602         .rate_min =             8000,
1603         .rate_max =             16000,
1604         .channels_min =         1,
1605         .channels_max =         1,
1606         .buffer_bytes_max =     (256*1024),
1607         .period_bytes_min =     64,
1608         .period_bytes_max =     (256*1024),
1609         .periods_min =          1,
1610         .periods_max =          1024,
1611         .fifo_size =            0,
1612 };
1613 
1614 static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec,
1615                               int channel)
1616 {
1617         static unsigned int rates[] = {8000, 9600, 12000, 16000};
1618         static struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1619                 .count = ARRAY_SIZE(rates),
1620                 .list = rates,
1621                 .mask = 0,
1622         };
1623         int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1624 
1625         if (err)
1626                 return err;
1627         return snd_pcm_hw_constraint_list(substream->runtime, 0,
1628                         SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1629 }
1630 
1631 static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1632 {
1633         return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1634 }
1635 
1636 static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1637 {
1638         return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1639 }
1640 
1641 static struct snd_pcm_ops snd_ali_modem_playback_ops = {
1642         .open =         snd_ali_modem_playback_open,
1643         .close =        snd_ali_close,
1644         .ioctl =        snd_pcm_lib_ioctl,
1645         .hw_params =    snd_ali_modem_hw_params,
1646         .hw_free =      snd_ali_hw_free,
1647         .prepare =      snd_ali_prepare,
1648         .trigger =      snd_ali_trigger,
1649         .pointer =      snd_ali_pointer,
1650 };
1651 
1652 static struct snd_pcm_ops snd_ali_modem_capture_ops = {
1653         .open =         snd_ali_modem_capture_open,
1654         .close =        snd_ali_close,
1655         .ioctl =        snd_pcm_lib_ioctl,
1656         .hw_params =    snd_ali_modem_hw_params,
1657         .hw_free =      snd_ali_hw_free,
1658         .prepare =      snd_ali_prepare,
1659         .trigger =      snd_ali_trigger,
1660         .pointer =      snd_ali_pointer,
1661 };
1662 
1663 
1664 struct ali_pcm_description {
1665         char *name;
1666         unsigned int playback_num;
1667         unsigned int capture_num;
1668         struct snd_pcm_ops *playback_ops;
1669         struct snd_pcm_ops *capture_ops;
1670         unsigned short class;
1671 };
1672 
1673 
1674 static void snd_ali_pcm_free(struct snd_pcm *pcm)
1675 {
1676         struct snd_ali *codec = pcm->private_data;
1677         codec->pcm[pcm->device] = NULL;
1678 }
1679 
1680 
1681 static int __devinit snd_ali_pcm(struct snd_ali * codec, int device,
1682                                  struct ali_pcm_description *desc)
1683 {
1684         struct snd_pcm *pcm;
1685         int err;
1686 
1687         err = snd_pcm_new(codec->card, desc->name, device,
1688                           desc->playback_num, desc->capture_num, &pcm);
1689         if (err < 0) {
1690                 snd_printk(KERN_ERR "snd_ali_pcm: err called snd_pcm_new.\n");
1691                 return err;
1692         }
1693         pcm->private_data = codec;
1694         pcm->private_free = snd_ali_pcm_free;
1695         if (desc->playback_ops)
1696                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1697                                 desc->playback_ops);
1698         if (desc->capture_ops)
1699                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1700                                 desc->capture_ops);
1701 
1702         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1703                                               snd_dma_pci_data(codec->pci),
1704                                               64*1024, 128*1024);
1705 
1706         pcm->info_flags = 0;
1707         pcm->dev_class = desc->class;
1708         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1709         strcpy(pcm->name, desc->name);
1710         codec->pcm[0] = pcm;
1711         return 0;
1712 }
1713 
1714 static struct ali_pcm_description ali_pcms[] = {
1715         { .name = "ALI 5451",
1716           .playback_num = ALI_CHANNELS,
1717           .capture_num = 1,
1718           .playback_ops = &snd_ali_playback_ops,
1719           .capture_ops = &snd_ali_capture_ops
1720         },
1721         { .name = "ALI 5451 modem",
1722           .playback_num = 1,
1723           .capture_num = 1,
1724           .playback_ops = &snd_ali_modem_playback_ops,
1725           .capture_ops = &snd_ali_modem_capture_ops,
1726           .class = SNDRV_PCM_CLASS_MODEM
1727         }
1728 };
1729 
1730 static int __devinit snd_ali_build_pcms(struct snd_ali *codec)
1731 {
1732         int i, err;
1733         for (i = 0; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms); i++) {
1734                 err = snd_ali_pcm(codec, i, &ali_pcms[i]);
1735                 if (err < 0)
1736                         return err;
1737         }
1738         return 0;
1739 }
1740 
1741 
1742 #define ALI5451_SPDIF(xname, xindex, value) \
1743 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1744 .info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1745 .put = snd_ali5451_spdif_put, .private_value = value}
1746 
1747 #define snd_ali5451_spdif_info          snd_ctl_boolean_mono_info
1748 
1749 static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol,
1750                                  struct snd_ctl_elem_value *ucontrol)
1751 {
1752         struct snd_ali *codec = kcontrol->private_data;
1753         unsigned int spdif_enable;
1754 
1755         spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1756 
1757         spin_lock_irq(&codec->reg_lock);
1758         switch (kcontrol->private_value) {
1759         case 0:
1760                 spdif_enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1761                 break;
1762         case 1:
1763                 spdif_enable = ((codec->spdif_mask & 0x02) &&
1764                           (codec->spdif_mask & 0x04)) ? 1 : 0;
1765                 break;
1766         case 2:
1767                 spdif_enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1768                 break;
1769         default:
1770                 break;
1771         }
1772         ucontrol->value.integer.value[0] = spdif_enable;
1773         spin_unlock_irq(&codec->reg_lock);
1774         return 0;
1775 }
1776 
1777 static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol,
1778                                  struct snd_ctl_elem_value *ucontrol)
1779 {
1780         struct snd_ali *codec = kcontrol->private_data;
1781         unsigned int change = 0, spdif_enable = 0;
1782 
1783         spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1784 
1785         spin_lock_irq(&codec->reg_lock);
1786         switch (kcontrol->private_value) {
1787         case 0:
1788                 change = (codec->spdif_mask & 0x02) ? 1 : 0;
1789                 change = change ^ spdif_enable;
1790                 if (change) {
1791                         if (spdif_enable) {
1792                                 codec->spdif_mask |= 0x02;
1793                                 snd_ali_enable_spdif_out(codec);
1794                         } else {
1795                                 codec->spdif_mask &= ~(0x02);
1796                                 codec->spdif_mask &= ~(0x04);
1797                                 snd_ali_disable_spdif_out(codec);
1798                         }
1799                 }
1800                 break;
1801         case 1: 
1802                 change = (codec->spdif_mask & 0x04) ? 1 : 0;
1803                 change = change ^ spdif_enable;
1804                 if (change && (codec->spdif_mask & 0x02)) {
1805                         if (spdif_enable) {
1806                                 codec->spdif_mask |= 0x04;
1807                                 snd_ali_enable_spdif_chnout(codec);
1808                         } else {
1809                                 codec->spdif_mask &= ~(0x04);
1810                                 snd_ali_disable_spdif_chnout(codec);
1811                         }
1812                 }
1813                 break;
1814         case 2:
1815                 change = (codec->spdif_mask & 0x01) ? 1 : 0;
1816                 change = change ^ spdif_enable;
1817                 if (change) {
1818                         if (spdif_enable) {
1819                                 codec->spdif_mask |= 0x01;
1820                                 snd_ali_enable_spdif_in(codec);
1821                         } else {
1822                                 codec->spdif_mask &= ~(0x01);
1823                                 snd_ali_disable_spdif_in(codec);
1824                         }
1825                 }
1826                 break;
1827         default:
1828                 break;
1829         }
1830         spin_unlock_irq(&codec->reg_lock);
1831         
1832         return change;
1833 }
1834 
1835 static struct snd_kcontrol_new snd_ali5451_mixer_spdif[] __devinitdata = {
1836         /* spdif aplayback switch */
1837         /* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1838         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1839         /* spdif out to spdif channel */
1840         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1841         /* spdif in from spdif channel */
1842         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1843 };
1844 
1845 static int __devinit snd_ali_mixer(struct snd_ali * codec)
1846 {
1847         struct snd_ac97_template ac97;
1848         unsigned int idx;
1849         int i, err;
1850         static struct snd_ac97_bus_ops ops = {
1851                 .write = snd_ali_codec_write,
1852                 .read = snd_ali_codec_read,
1853         };
1854 
1855         err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus);
1856         if (err < 0)
1857                 return err;
1858 
1859         memset(&ac97, 0, sizeof(ac97));
1860         ac97.private_data = codec;
1861 
1862         for (i = 0; i < codec->num_of_codecs; i++) {
1863                 ac97.num = i;
1864                 err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i]);
1865                 if (err < 0) {
1866                         snd_printk(KERN_ERR
1867                                    "ali mixer %d creating error.\n", i);
1868                         if (i == 0)
1869                                 return err;
1870                         codec->num_of_codecs = 1;
1871                         break;
1872                 }
1873         }
1874 
1875         if (codec->spdif_support) {
1876                 for (idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1877                         err = snd_ctl_add(codec->card,
1878                                           snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1879                         if (err < 0)
1880                                 return err;
1881                 }
1882         }
1883         return 0;
1884 }
1885 
1886 #ifdef CONFIG_PM
1887 static int ali_suspend(struct pci_dev *pci, pm_message_t state)
1888 {
1889         struct snd_card *card = pci_get_drvdata(pci);
1890         struct snd_ali *chip = card->private_data;
1891         struct snd_ali_image *im;
1892         int i, j;
1893 
1894         im = chip->image;
1895         if (!im)
1896                 return 0;
1897 
1898         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1899         for (i = 0; i < chip->num_of_codecs; i++) {
1900                 snd_pcm_suspend_all(chip->pcm[i]);
1901                 snd_ac97_suspend(chip->ac97[i]);
1902         }
1903 
1904         spin_lock_irq(&chip->reg_lock);
1905         
1906         im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
1907         /* im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START)); */
1908         im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
1909         
1910         /* disable all IRQ bits */
1911         outl(0, ALI_REG(chip, ALI_MISCINT));
1912         
1913         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1914                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
1915                         continue;
1916                 im->regs[i] = inl(ALI_REG(chip, i*4));
1917         }
1918         
1919         for (i = 0; i < ALI_CHANNELS; i++) {
1920                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1921                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1922                         im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
1923         }
1924 
1925         /* stop all HW channel */
1926         outl(0xffffffff, ALI_REG(chip, ALI_STOP));
1927 
1928         spin_unlock_irq(&chip->reg_lock);
1929 
1930         pci_disable_device(pci);
1931         pci_save_state(pci);
1932         pci_set_power_state(pci, pci_choose_state(pci, state));
1933         return 0;
1934 }
1935 
1936 static int ali_resume(struct pci_dev *pci)
1937 {
1938         struct snd_card *card = pci_get_drvdata(pci);
1939         struct snd_ali *chip = card->private_data;
1940         struct snd_ali_image *im;
1941         int i, j;
1942 
1943         im = chip->image;
1944         if (!im)
1945                 return 0;
1946 
1947         pci_set_power_state(pci, PCI_D0);
1948         pci_restore_state(pci);
1949         if (pci_enable_device(pci) < 0) {
1950                 printk(KERN_ERR "ali5451: pci_enable_device failed, "
1951                        "disabling device\n");
1952                 snd_card_disconnect(card);
1953                 return -EIO;
1954         }
1955         pci_set_master(pci);
1956 
1957         spin_lock_irq(&chip->reg_lock);
1958         
1959         for (i = 0; i < ALI_CHANNELS; i++) {
1960                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1961                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1962                         outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
1963         }
1964         
1965         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1966                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) ||
1967                     (i*4 == ALI_START))
1968                         continue;
1969                 outl(im->regs[i], ALI_REG(chip, i*4));
1970         }
1971         
1972         /* start HW channel */
1973         outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
1974         /* restore IRQ enable bits */
1975         outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
1976         
1977         spin_unlock_irq(&chip->reg_lock);
1978 
1979         for (i = 0 ; i < chip->num_of_codecs; i++)
1980                 snd_ac97_resume(chip->ac97[i]);
1981         
1982         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1983         return 0;
1984 }
1985 #endif /* CONFIG_PM */
1986 
1987 static int snd_ali_free(struct snd_ali * codec)
1988 {
1989         if (codec->hw_initialized)
1990                 snd_ali_disable_address_interrupt(codec);
1991         if (codec->irq >= 0)
1992                 free_irq(codec->irq, codec);
1993         if (codec->port)
1994                 pci_release_regions(codec->pci);
1995         pci_disable_device(codec->pci);
1996 #ifdef CONFIG_PM
1997         kfree(codec->image);
1998 #endif
1999         pci_dev_put(codec->pci_m1533);
2000         pci_dev_put(codec->pci_m7101);
2001         kfree(codec);
2002         return 0;
2003 }
2004 
2005 static int snd_ali_chip_init(struct snd_ali *codec)
2006 {
2007         unsigned int legacy;
2008         unsigned char temp;
2009         struct pci_dev *pci_dev;
2010 
2011         snd_ali_printk("chip initializing ... \n");
2012 
2013         if (snd_ali_reset_5451(codec)) {
2014                 snd_printk(KERN_ERR "ali_chip_init: reset 5451 error.\n");
2015                 return -1;
2016         }
2017 
2018         if (codec->revision == ALI_5451_V02) {
2019                 pci_dev = codec->pci_m1533;
2020                 pci_read_config_byte(pci_dev, 0x59, &temp);
2021                 temp |= 0x80;
2022                 pci_write_config_byte(pci_dev, 0x59, temp);
2023         
2024                 pci_dev = codec->pci_m7101;
2025                 pci_read_config_byte(pci_dev, 0xb8, &temp);
2026                 temp |= 0x20;
2027                 pci_write_config_byte(pci_dev, 0xB8, temp);
2028         }
2029 
2030         pci_read_config_dword(codec->pci, 0x44, &legacy);
2031         legacy &= 0xff00ff00;
2032         legacy |= 0x000800aa;
2033         pci_write_config_dword(codec->pci, 0x44, legacy);
2034 
2035         outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
2036         outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
2037         outl(0xffffffff, ALI_REG(codec, ALI_AINT));
2038         outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
2039         outb(0x10,       ALI_REG(codec, ALI_MPUR2));
2040 
2041         codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
2042         codec->ac97_ext_status = snd_ali_codec_peek(codec, 0,
2043                                                     AC97_EXTENDED_STATUS);
2044         if (codec->spdif_support) {
2045                 snd_ali_enable_spdif_out(codec);
2046                 codec->spdif_mask = 0x00000002;
2047         }
2048 
2049         codec->num_of_codecs = 1;
2050 
2051         /* secondary codec - modem */
2052         if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
2053                 codec->num_of_codecs++;
2054                 outl(inl(ALI_REG(codec, ALI_SCTRL)) |
2055                      (ALI_SCTRL_LINE_IN2 | ALI_SCTRL_GPIO_IN2 |
2056                       ALI_SCTRL_LINE_OUT_EN),
2057                      ALI_REG(codec, ALI_SCTRL));
2058         }
2059 
2060         snd_ali_printk("chip initialize succeed.\n");
2061         return 0;
2062 
2063 }
2064 
2065 /* proc for register dump */
2066 static void snd_ali_proc_read(struct snd_info_entry *entry,
2067                               struct snd_info_buffer *buf)
2068 {
2069         struct snd_ali *codec = entry->private_data;
2070         int i;
2071         for (i = 0; i < 256 ; i+= 4)
2072                 snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2073 }
2074 
2075 static void __devinit snd_ali_proc_init(struct snd_ali *codec)
2076 {
2077         struct snd_info_entry *entry;
2078         if (!snd_card_proc_new(codec->card, "ali5451", &entry))
2079                 snd_info_set_text_ops(entry, codec, snd_ali_proc_read);
2080 }
2081 
2082 static int __devinit snd_ali_resources(struct snd_ali *codec)
2083 {
2084         int err;
2085 
2086         snd_ali_printk("resources allocation ...\n");
2087         err = pci_request_regions(codec->pci, "ALI 5451");
2088         if (err < 0)
2089                 return err;
2090         codec->port = pci_resource_start(codec->pci, 0);
2091 
2092         if (request_irq(codec->pci->irq, snd_ali_card_interrupt,
2093                         IRQF_SHARED, KBUILD_MODNAME, codec)) {
2094                 snd_printk(KERN_ERR "Unable to request irq.\n");
2095                 return -EBUSY;
2096         }
2097         codec->irq = codec->pci->irq;
2098         snd_ali_printk("resources allocated.\n");
2099         return 0;
2100 }
2101 static int snd_ali_dev_free(struct snd_device *device)
2102 {
2103         struct snd_ali *codec = device->device_data;
2104         snd_ali_free(codec);
2105         return 0;
2106 }
2107 
2108 static int __devinit snd_ali_create(struct snd_card *card,
2109                                     struct pci_dev *pci,
2110                                     int pcm_streams,
2111                                     int spdif_support,
2112                                     struct snd_ali ** r_ali)
2113 {
2114         struct snd_ali *codec;
2115         int i, err;
2116         unsigned short cmdw;
2117         static struct snd_device_ops ops = {
2118                 .dev_free = snd_ali_dev_free,
2119         };
2120 
2121         *r_ali = NULL;
2122 
2123         snd_ali_printk("creating ...\n");
2124 
2125         /* enable PCI device */
2126         err = pci_enable_device(pci);
2127         if (err < 0)
2128                 return err;
2129         /* check, if we can restrict PCI DMA transfers to 31 bits */
2130         if (pci_set_dma_mask(pci, DMA_BIT_MASK(31)) < 0 ||
2131             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(31)) < 0) {
2132                 snd_printk(KERN_ERR "architecture does not support "
2133                            "31bit PCI busmaster DMA\n");
2134                 pci_disable_device(pci);
2135                 return -ENXIO;
2136         }
2137 
2138         codec = kzalloc(sizeof(*codec), GFP_KERNEL);
2139         if (!codec) {
2140                 pci_disable_device(pci);
2141                 return -ENOMEM;
2142         }
2143 
2144         spin_lock_init(&codec->reg_lock);
2145         spin_lock_init(&codec->voice_alloc);
2146 
2147         codec->card = card;
2148         codec->pci = pci;
2149         codec->irq = -1;
2150         codec->revision = pci->revision;
2151         codec->spdif_support = spdif_support;
2152 
2153         if (pcm_streams < 1)
2154                 pcm_streams = 1;
2155         if (pcm_streams > 32)
2156                 pcm_streams = 32;
2157         
2158         pci_set_master(pci);
2159         pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2160         if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2161                 cmdw |= PCI_COMMAND_IO;
2162                 pci_write_config_word(pci, PCI_COMMAND, cmdw);
2163         }
2164         pci_set_master(pci);
2165         
2166         if (snd_ali_resources(codec)) {
2167                 snd_ali_free(codec);
2168                 return -EBUSY;
2169         }
2170 
2171         synchronize_irq(pci->irq);
2172 
2173         codec->synth.chmap = 0;
2174         codec->synth.chcnt = 0;
2175         codec->spdif_mask = 0;
2176         codec->synth.synthcount = 0;
2177 
2178         if (codec->revision == ALI_5451_V02)
2179                 codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2180         else
2181                 codec->chregs.regs.ac97read = ALI_AC97_READ;
2182         codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2183 
2184         codec->chregs.regs.start  = ALI_START;
2185         codec->chregs.regs.stop   = ALI_STOP;
2186         codec->chregs.regs.aint   = ALI_AINT;
2187         codec->chregs.regs.ainten = ALI_AINTEN;
2188 
2189         codec->chregs.data.start  = 0x00;
2190         codec->chregs.data.stop   = 0x00;
2191         codec->chregs.data.aint   = 0x00;
2192         codec->chregs.data.ainten = 0x00;
2193 
2194         /* M1533: southbridge */
2195         codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2196         if (!codec->pci_m1533) {
2197                 snd_printk(KERN_ERR "ali5451: cannot find ALi 1533 chip.\n");
2198                 snd_ali_free(codec);
2199                 return -ENODEV;
2200         }
2201         /* M7101: power management */
2202         codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2203         if (!codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2204                 snd_printk(KERN_ERR "ali5451: cannot find ALi 7101 chip.\n");
2205                 snd_ali_free(codec);
2206                 return -ENODEV;
2207         }
2208 
2209         snd_ali_printk("snd_device_new is called.\n");
2210         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops);
2211         if (err < 0) {
2212                 snd_ali_free(codec);
2213                 return err;
2214         }
2215 
2216         snd_card_set_dev(card, &pci->dev);
2217 
2218         /* initialise synth voices*/
2219         for (i = 0; i < ALI_CHANNELS; i++)
2220                 codec->synth.voices[i].number = i;
2221 
2222         err = snd_ali_chip_init(codec);
2223         if (err < 0) {
2224                 snd_printk(KERN_ERR "ali create: chip init error.\n");
2225                 return err;
2226         }
2227 
2228 #ifdef CONFIG_PM
2229         codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2230         if (!codec->image)
2231                 snd_printk(KERN_WARNING "can't allocate apm buffer\n");
2232 #endif
2233 
2234         snd_ali_enable_address_interrupt(codec);
2235         codec->hw_initialized = 1;
2236 
2237         *r_ali = codec;
2238         snd_ali_printk("created.\n");
2239         return 0;
2240 }
2241 
2242 static int __devinit snd_ali_probe(struct pci_dev *pci,
2243                                    const struct pci_device_id *pci_id)
2244 {
2245         struct snd_card *card;
2246         struct snd_ali *codec;
2247         int err;
2248 
2249         snd_ali_printk("probe ...\n");
2250 
2251         err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2252         if (err < 0)
2253                 return err;
2254 
2255         err = snd_ali_create(card, pci, pcm_channels, spdif, &codec);
2256         if (err < 0)
2257                 goto error;
2258         card->private_data = codec;
2259 
2260         snd_ali_printk("mixer building ...\n");
2261         err = snd_ali_mixer(codec);
2262         if (err < 0)
2263                 goto error;
2264         
2265         snd_ali_printk("pcm building ...\n");
2266         err = snd_ali_build_pcms(codec);
2267         if (err < 0)
2268                 goto error;
2269 
2270         snd_ali_proc_init(codec);
2271 
2272         strcpy(card->driver, "ALI5451");
2273         strcpy(card->shortname, "ALI 5451");
2274         
2275         sprintf(card->longname, "%s at 0x%lx, irq %i",
2276                 card->shortname, codec->port, codec->irq);
2277 
2278         snd_ali_printk("register card.\n");
2279         err = snd_card_register(card);
2280         if (err < 0)
2281                 goto error;
2282 
2283         pci_set_drvdata(pci, card);
2284         return 0;
2285 
2286  error:
2287         snd_card_free(card);
2288         return err;
2289 }
2290 
2291 static void __devexit snd_ali_remove(struct pci_dev *pci)
2292 {
2293         snd_card_free(pci_get_drvdata(pci));
2294         pci_set_drvdata(pci, NULL);
2295 }
2296 
2297 static struct pci_driver driver = {
2298         .name = KBUILD_MODNAME,
2299         .id_table = snd_ali_ids,
2300         .probe = snd_ali_probe,
2301         .remove = __devexit_p(snd_ali_remove),
2302 #ifdef CONFIG_PM
2303         .suspend = ali_suspend,
2304         .resume = ali_resume,
2305 #endif
2306 };                                
2307 
2308 static int __init alsa_card_ali_init(void)
2309 {
2310         return pci_register_driver(&driver);
2311 }
2312 
2313 static void __exit alsa_card_ali_exit(void)
2314 {
2315         pci_unregister_driver(&driver);
2316 }
2317 
2318 module_init(alsa_card_ali_init)
2319 module_exit(alsa_card_ali_exit)
2320 

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