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Linux/sound/pci/ali5451/ali5451.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  *  Matt Wu <Matt_Wu@acersoftech.com.cn>
  4  *  Apr 26, 2001
  5  *  Routines for control of ALi pci audio M5451
  6  *
  7  *  BUGS:
  8  *    --
  9  *
 10  *  TODO:
 11  *    --
 12  */
 13 
 14 #include <linux/io.h>
 15 #include <linux/delay.h>
 16 #include <linux/interrupt.h>
 17 #include <linux/init.h>
 18 #include <linux/pci.h>
 19 #include <linux/slab.h>
 20 #include <linux/module.h>
 21 #include <linux/dma-mapping.h>
 22 #include <sound/core.h>
 23 #include <sound/pcm.h>
 24 #include <sound/info.h>
 25 #include <sound/ac97_codec.h>
 26 #include <sound/mpu401.h>
 27 #include <sound/initval.h>
 28 
 29 MODULE_AUTHOR("Matt Wu <Matt_Wu@acersoftech.com.cn>");
 30 MODULE_DESCRIPTION("ALI M5451");
 31 MODULE_LICENSE("GPL");
 32 MODULE_SUPPORTED_DEVICE("{{ALI,M5451,pci},{ALI,M5451}}");
 33 
 34 static int index = SNDRV_DEFAULT_IDX1;  /* Index */
 35 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
 36 static int pcm_channels = 32;
 37 static bool spdif;
 38 
 39 module_param(index, int, 0444);
 40 MODULE_PARM_DESC(index, "Index value for ALI M5451 PCI Audio.");
 41 module_param(id, charp, 0444);
 42 MODULE_PARM_DESC(id, "ID string for ALI M5451 PCI Audio.");
 43 module_param(pcm_channels, int, 0444);
 44 MODULE_PARM_DESC(pcm_channels, "PCM Channels");
 45 module_param(spdif, bool, 0444);
 46 MODULE_PARM_DESC(spdif, "Support SPDIF I/O");
 47 
 48 /* just for backward compatibility */
 49 static bool enable;
 50 module_param(enable, bool, 0444);
 51 
 52 
 53 /*
 54  *  Constants definition
 55  */
 56 
 57 #define DEVICE_ID_ALI5451       ((PCI_VENDOR_ID_AL<<16)|PCI_DEVICE_ID_AL_M5451)
 58 
 59 
 60 #define ALI_CHANNELS            32
 61 
 62 #define ALI_PCM_IN_CHANNEL      31
 63 #define ALI_SPDIF_IN_CHANNEL    19
 64 #define ALI_SPDIF_OUT_CHANNEL   15
 65 #define ALI_CENTER_CHANNEL      24
 66 #define ALI_LEF_CHANNEL         23
 67 #define ALI_SURR_LEFT_CHANNEL   26
 68 #define ALI_SURR_RIGHT_CHANNEL  25
 69 #define ALI_MODEM_IN_CHANNEL    21
 70 #define ALI_MODEM_OUT_CHANNEL   20
 71 
 72 #define SNDRV_ALI_VOICE_TYPE_PCM        01
 73 #define SNDRV_ALI_VOICE_TYPE_OTH        02
 74 
 75 #define ALI_5451_V02            0x02
 76 
 77 /*
 78  *  Direct Registers
 79  */
 80 
 81 #define ALI_LEGACY_DMAR0        0x00  /* ADR0 */
 82 #define ALI_LEGACY_DMAR4        0x04  /* CNT0 */
 83 #define ALI_LEGACY_DMAR11       0x0b  /* MOD  */
 84 #define ALI_LEGACY_DMAR15       0x0f  /* MMR  */
 85 #define ALI_MPUR0               0x20
 86 #define ALI_MPUR1               0x21
 87 #define ALI_MPUR2               0x22
 88 #define ALI_MPUR3               0x23
 89 
 90 #define ALI_AC97_WRITE          0x40
 91 #define ALI_AC97_READ           0x44
 92 
 93 #define ALI_SCTRL               0x48
 94 #define   ALI_SPDIF_OUT_ENABLE          0x20
 95 #define   ALI_SCTRL_LINE_IN2            (1 << 9)
 96 #define   ALI_SCTRL_GPIO_IN2            (1 << 13)
 97 #define   ALI_SCTRL_LINE_OUT_EN         (1 << 20)
 98 #define   ALI_SCTRL_GPIO_OUT_EN         (1 << 23)
 99 #define   ALI_SCTRL_CODEC1_READY        (1 << 24)
100 #define   ALI_SCTRL_CODEC2_READY        (1 << 25)
101 #define ALI_AC97_GPIO           0x4c
102 #define   ALI_AC97_GPIO_ENABLE          0x8000
103 #define   ALI_AC97_GPIO_DATA_SHIFT      16
104 #define ALI_SPDIF_CS            0x70
105 #define ALI_SPDIF_CTRL          0x74
106 #define   ALI_SPDIF_IN_FUNC_ENABLE      0x02
107 #define   ALI_SPDIF_IN_CH_STATUS        0x40
108 #define   ALI_SPDIF_OUT_CH_STATUS       0xbf
109 #define ALI_START               0x80
110 #define ALI_STOP                0x84
111 #define ALI_CSPF                0x90
112 #define ALI_AINT                0x98
113 #define ALI_GC_CIR              0xa0
114         #define ENDLP_IE                0x00001000
115         #define MIDLP_IE                0x00002000
116 #define ALI_AINTEN              0xa4
117 #define ALI_VOLUME              0xa8
118 #define ALI_SBDELTA_DELTA_R     0xac
119 #define ALI_MISCINT             0xb0
120         #define ADDRESS_IRQ             0x00000020
121         #define TARGET_REACHED          0x00008000
122         #define MIXER_OVERFLOW          0x00000800
123         #define MIXER_UNDERFLOW         0x00000400
124         #define GPIO_IRQ                0x01000000
125 #define ALI_SBBL_SBCL           0xc0
126 #define ALI_SBCTRL_SBE2R_SBDD   0xc4
127 #define ALI_STIMER              0xc8
128 #define ALI_GLOBAL_CONTROL      0xd4
129 #define   ALI_SPDIF_OUT_SEL_PCM         0x00000400 /* bit 10 */
130 #define   ALI_SPDIF_IN_SUPPORT          0x00000800 /* bit 11 */
131 #define   ALI_SPDIF_OUT_CH_ENABLE       0x00008000 /* bit 15 */
132 #define   ALI_SPDIF_IN_CH_ENABLE        0x00080000 /* bit 19 */
133 #define   ALI_PCM_IN_ENABLE             0x80000000 /* bit 31 */
134 
135 #define ALI_CSO_ALPHA_FMS       0xe0
136 #define ALI_LBA                 0xe4
137 #define ALI_ESO_DELTA           0xe8
138 #define ALI_GVSEL_PAN_VOC_CTRL_EC       0xf0
139 #define ALI_EBUF1               0xf4
140 #define ALI_EBUF2               0xf8
141 
142 #define ALI_REG(codec, x) ((codec)->port + x)
143 
144 #define MAX_CODECS 2
145 
146 
147 struct snd_ali;
148 struct snd_ali_voice;
149 
150 struct snd_ali_channel_control {
151         /* register data */
152         struct REGDATA {
153                 unsigned int start;
154                 unsigned int stop;
155                 unsigned int aint;
156                 unsigned int ainten;
157         } data;
158                 
159         /* register addresses */
160         struct REGS {
161                 unsigned int start;
162                 unsigned int stop;
163                 unsigned int aint;
164                 unsigned int ainten;
165                 unsigned int ac97read;
166                 unsigned int ac97write;
167         } regs;
168 
169 };
170 
171 struct snd_ali_voice {
172         unsigned int number;
173         unsigned int use :1,
174                 pcm :1,
175                 midi :1,
176                 mode :1,
177                 synth :1,
178                 running :1;
179 
180         /* PCM data */
181         struct snd_ali *codec;
182         struct snd_pcm_substream *substream;
183         struct snd_ali_voice *extra;
184         
185         int eso;                /* final ESO value for channel */
186         int count;              /* runtime->period_size */
187 
188         /* --- */
189 
190         void *private_data;
191         void (*private_free)(void *private_data);
192 };
193 
194 
195 struct snd_alidev {
196 
197         struct snd_ali_voice voices[ALI_CHANNELS];      
198 
199         unsigned int    chcnt;                  /* num of opened channels */
200         unsigned int    chmap;                  /* bitmap for opened channels */
201         unsigned int synthcount;
202 
203 };
204 
205 
206 #define ALI_GLOBAL_REGS         56
207 #define ALI_CHANNEL_REGS        8
208 struct snd_ali_image {
209         u32 regs[ALI_GLOBAL_REGS];
210         u32 channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
211 };
212 
213 
214 struct snd_ali {
215         int             irq;
216         unsigned long   port;
217         unsigned char   revision;
218 
219         unsigned int hw_initialized :1;
220         unsigned int spdif_support :1;
221 
222         struct pci_dev  *pci;
223         struct pci_dev  *pci_m1533;
224         struct pci_dev  *pci_m7101;
225 
226         struct snd_card *card;
227         struct snd_pcm  *pcm[MAX_CODECS];
228         struct snd_alidev       synth;
229         struct snd_ali_channel_control chregs;
230 
231         /* S/PDIF Mask */
232         unsigned int    spdif_mask;
233 
234         unsigned int spurious_irq_count;
235         unsigned int spurious_irq_max_delta;
236 
237         unsigned int num_of_codecs;
238 
239         struct snd_ac97_bus *ac97_bus;
240         struct snd_ac97 *ac97[MAX_CODECS];
241         unsigned short  ac97_ext_id;
242         unsigned short  ac97_ext_status;
243 
244         spinlock_t      reg_lock;
245         spinlock_t      voice_alloc;
246 
247 #ifdef CONFIG_PM_SLEEP
248         struct snd_ali_image *image;
249 #endif
250 };
251 
252 static const struct pci_device_id snd_ali_ids[] = {
253         {PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5451), 0, 0, 0},
254         {0, }
255 };
256 MODULE_DEVICE_TABLE(pci, snd_ali_ids);
257 
258 static void snd_ali_clear_voices(struct snd_ali *, unsigned int, unsigned int);
259 static unsigned short snd_ali_codec_peek(struct snd_ali *, int, unsigned short);
260 static void snd_ali_codec_poke(struct snd_ali *, int, unsigned short,
261                                unsigned short);
262 
263 /*
264  *  AC97 ACCESS
265  */
266 
267 static inline unsigned int snd_ali_5451_peek(struct snd_ali *codec,
268                                              unsigned int port)
269 {
270         return (unsigned int)inl(ALI_REG(codec, port)); 
271 }
272 
273 static inline void snd_ali_5451_poke(struct snd_ali *codec,
274                                      unsigned int port,
275                                      unsigned int val)
276 {
277         outl((unsigned int)val, ALI_REG(codec, port));
278 }
279 
280 static int snd_ali_codec_ready(struct snd_ali *codec,
281                                unsigned int port)
282 {
283         unsigned long end_time;
284         unsigned int res;
285         
286         end_time = jiffies + msecs_to_jiffies(250);
287 
288         for (;;) {
289                 res = snd_ali_5451_peek(codec,port);
290                 if (!(res & 0x8000))
291                         return 0;
292                 if (!time_after_eq(end_time, jiffies))
293                         break;
294                 schedule_timeout_uninterruptible(1);
295         }
296 
297         snd_ali_5451_poke(codec, port, res & ~0x8000);
298         dev_dbg(codec->card->dev, "ali_codec_ready: codec is not ready.\n ");
299         return -EIO;
300 }
301 
302 static int snd_ali_stimer_ready(struct snd_ali *codec)
303 {
304         unsigned long end_time;
305         unsigned long dwChk1,dwChk2;
306         
307         dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
308         end_time = jiffies + msecs_to_jiffies(250);
309 
310         for (;;) {
311                 dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
312                 if (dwChk2 != dwChk1)
313                         return 0;
314                 if (!time_after_eq(end_time, jiffies))
315                         break;
316                 schedule_timeout_uninterruptible(1);
317         }
318 
319         dev_err(codec->card->dev, "ali_stimer_read: stimer is not ready.\n");
320         return -EIO;
321 }
322 
323 static void snd_ali_codec_poke(struct snd_ali *codec,int secondary,
324                                unsigned short reg,
325                                unsigned short val)
326 {
327         unsigned int dwVal;
328         unsigned int port;
329 
330         if (reg >= 0x80) {
331                 dev_err(codec->card->dev,
332                         "ali_codec_poke: reg(%xh) invalid.\n", reg);
333                 return;
334         }
335 
336         port = codec->chregs.regs.ac97write;
337 
338         if (snd_ali_codec_ready(codec, port) < 0)
339                 return;
340         if (snd_ali_stimer_ready(codec) < 0)
341                 return;
342 
343         dwVal  = (unsigned int) (reg & 0xff);
344         dwVal |= 0x8000 | (val << 16);
345         if (secondary)
346                 dwVal |= 0x0080;
347         if (codec->revision == ALI_5451_V02)
348                 dwVal |= 0x0100;
349 
350         snd_ali_5451_poke(codec, port, dwVal);
351 
352         return ;
353 }
354 
355 static unsigned short snd_ali_codec_peek(struct snd_ali *codec,
356                                          int secondary,
357                                          unsigned short reg)
358 {
359         unsigned int dwVal;
360         unsigned int port;
361 
362         if (reg >= 0x80) {
363                 dev_err(codec->card->dev,
364                         "ali_codec_peek: reg(%xh) invalid.\n", reg);
365                 return ~0;
366         }
367 
368         port = codec->chregs.regs.ac97read;
369 
370         if (snd_ali_codec_ready(codec, port) < 0)
371                 return ~0;
372         if (snd_ali_stimer_ready(codec) < 0)
373                 return ~0;
374 
375         dwVal  = (unsigned int) (reg & 0xff);
376         dwVal |= 0x8000;                                /* bit 15*/
377         if (secondary)
378                 dwVal |= 0x0080;
379 
380         snd_ali_5451_poke(codec, port, dwVal);
381 
382         if (snd_ali_stimer_ready(codec) < 0)
383                 return ~0;
384         if (snd_ali_codec_ready(codec, port) < 0)
385                 return ~0;
386         
387         return (snd_ali_5451_peek(codec, port) & 0xffff0000) >> 16;
388 }
389 
390 static void snd_ali_codec_write(struct snd_ac97 *ac97,
391                                 unsigned short reg,
392                                 unsigned short val )
393 {
394         struct snd_ali *codec = ac97->private_data;
395 
396         dev_dbg(codec->card->dev, "codec_write: reg=%xh data=%xh.\n", reg, val);
397         if (reg == AC97_GPIO_STATUS) {
398                 outl((val << ALI_AC97_GPIO_DATA_SHIFT) | ALI_AC97_GPIO_ENABLE,
399                      ALI_REG(codec, ALI_AC97_GPIO));
400                 return;
401         }
402         snd_ali_codec_poke(codec, ac97->num, reg, val);
403         return ;
404 }
405 
406 
407 static unsigned short snd_ali_codec_read(struct snd_ac97 *ac97,
408                                          unsigned short reg)
409 {
410         struct snd_ali *codec = ac97->private_data;
411 
412         dev_dbg(codec->card->dev, "codec_read reg=%xh.\n", reg);
413         return snd_ali_codec_peek(codec, ac97->num, reg);
414 }
415 
416 /*
417  *      AC97 Reset
418  */
419 
420 static int snd_ali_reset_5451(struct snd_ali *codec)
421 {
422         struct pci_dev *pci_dev;
423         unsigned short wCount, wReg;
424         unsigned int   dwVal;
425         
426         pci_dev = codec->pci_m1533;
427         if (pci_dev) {
428                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
429                 pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
430                 mdelay(5);
431                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
432                 pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
433                 mdelay(5);
434         }
435         
436         pci_dev = codec->pci;
437         pci_read_config_dword(pci_dev, 0x44, &dwVal);
438         pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
439         udelay(500);
440         pci_read_config_dword(pci_dev, 0x44, &dwVal);
441         pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
442         mdelay(5);
443         
444         wCount = 200;
445         while(wCount--) {
446                 wReg = snd_ali_codec_peek(codec, 0, AC97_POWERDOWN);
447                 if ((wReg & 0x000f) == 0x000f)
448                         return 0;
449                 mdelay(5);
450         }
451 
452         /* non-fatal if you have a non PM capable codec */
453         /* dev_warn(codec->card->dev, "ali5451: reset time out\n"); */
454         return 0;
455 }
456 
457 /*
458  *  ALI 5451 Controller
459  */
460 
461 static void snd_ali_enable_special_channel(struct snd_ali *codec,
462                                            unsigned int channel)
463 {
464         unsigned long dwVal;
465 
466         dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
467         dwVal |= 1 << (channel & 0x0000001f);
468         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
469 }
470 
471 static void snd_ali_disable_special_channel(struct snd_ali *codec,
472                                             unsigned int channel)
473 {
474         unsigned long dwVal;
475 
476         dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
477         dwVal &= ~(1 << (channel & 0x0000001f));
478         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
479 }
480 
481 static void snd_ali_enable_address_interrupt(struct snd_ali *codec)
482 {
483         unsigned int gc;
484 
485         gc  = inl(ALI_REG(codec, ALI_GC_CIR));
486         gc |= ENDLP_IE;
487         gc |= MIDLP_IE;
488         outl( gc, ALI_REG(codec, ALI_GC_CIR));
489 }
490 
491 static void snd_ali_disable_address_interrupt(struct snd_ali *codec)
492 {
493         unsigned int gc;
494 
495         gc  = inl(ALI_REG(codec, ALI_GC_CIR));
496         gc &= ~ENDLP_IE;
497         gc &= ~MIDLP_IE;
498         outl(gc, ALI_REG(codec, ALI_GC_CIR));
499 }
500 
501 static void snd_ali_disable_voice_irq(struct snd_ali *codec,
502                                       unsigned int channel)
503 {
504         unsigned int mask;
505         struct snd_ali_channel_control *pchregs = &(codec->chregs);
506 
507         dev_dbg(codec->card->dev, "disable_voice_irq channel=%d\n", channel);
508 
509         mask = 1 << (channel & 0x1f);
510         pchregs->data.ainten  = inl(ALI_REG(codec, pchregs->regs.ainten));
511         pchregs->data.ainten &= ~mask;
512         outl(pchregs->data.ainten, ALI_REG(codec, pchregs->regs.ainten));
513 }
514 
515 static int snd_ali_alloc_pcm_channel(struct snd_ali *codec, int channel)
516 {
517         unsigned int idx =  channel & 0x1f;
518 
519         if (codec->synth.chcnt >= ALI_CHANNELS){
520                 dev_err(codec->card->dev,
521                            "ali_alloc_pcm_channel: no free channels.\n");
522                 return -1;
523         }
524 
525         if (!(codec->synth.chmap & (1 << idx))) {
526                 codec->synth.chmap |= 1 << idx;
527                 codec->synth.chcnt++;
528                 dev_dbg(codec->card->dev, "alloc_pcm_channel no. %d.\n", idx);
529                 return idx;
530         }
531         return -1;
532 }
533 
534 static int snd_ali_find_free_channel(struct snd_ali * codec, int rec)
535 {
536         int idx;
537         int result = -1;
538 
539         dev_dbg(codec->card->dev,
540                 "find_free_channel: for %s\n", rec ? "rec" : "pcm");
541 
542         /* recording */
543         if (rec) {
544                 if (codec->spdif_support &&
545                     (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
546                      ALI_SPDIF_IN_SUPPORT))
547                         idx = ALI_SPDIF_IN_CHANNEL;
548                 else
549                         idx = ALI_PCM_IN_CHANNEL;
550 
551                 result = snd_ali_alloc_pcm_channel(codec, idx);
552                 if (result >= 0)
553                         return result;
554                 else {
555                         dev_err(codec->card->dev,
556                                 "ali_find_free_channel: record channel is busy now.\n");
557                         return -1;
558                 }
559         }
560 
561         /* playback... */
562         if (codec->spdif_support &&
563             (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
564              ALI_SPDIF_OUT_CH_ENABLE)) {
565                 idx = ALI_SPDIF_OUT_CHANNEL;
566                 result = snd_ali_alloc_pcm_channel(codec, idx);
567                 if (result >= 0)
568                         return result;
569                 else
570                         dev_err(codec->card->dev,
571                                 "ali_find_free_channel: S/PDIF out channel is in busy now.\n");
572         }
573 
574         for (idx = 0; idx < ALI_CHANNELS; idx++) {
575                 result = snd_ali_alloc_pcm_channel(codec, idx);
576                 if (result >= 0)
577                         return result;
578         }
579         dev_err(codec->card->dev, "ali_find_free_channel: no free channels.\n");
580         return -1;
581 }
582 
583 static void snd_ali_free_channel_pcm(struct snd_ali *codec, int channel)
584 {
585         unsigned int idx = channel & 0x0000001f;
586 
587         dev_dbg(codec->card->dev, "free_channel_pcm channel=%d\n", channel);
588 
589         if (channel < 0 || channel >= ALI_CHANNELS)
590                 return;
591 
592         if (!(codec->synth.chmap & (1 << idx))) {
593                 dev_err(codec->card->dev,
594                         "ali_free_channel_pcm: channel %d is not in use.\n",
595                         channel);
596                 return;
597         } else {
598                 codec->synth.chmap &= ~(1 << idx);
599                 codec->synth.chcnt--;
600         }
601 }
602 
603 static void snd_ali_stop_voice(struct snd_ali *codec, unsigned int channel)
604 {
605         unsigned int mask = 1 << (channel & 0x1f);
606 
607         dev_dbg(codec->card->dev, "stop_voice: channel=%d\n", channel);
608         outl(mask, ALI_REG(codec, codec->chregs.regs.stop));
609 }
610 
611 /*
612  *    S/PDIF Part
613  */
614 
615 static void snd_ali_delay(struct snd_ali *codec,int interval)
616 {
617         unsigned long  begintimer,currenttimer;
618 
619         begintimer   = inl(ALI_REG(codec, ALI_STIMER));
620         currenttimer = inl(ALI_REG(codec, ALI_STIMER));
621 
622         while (currenttimer < begintimer + interval) {
623                 if (snd_ali_stimer_ready(codec) < 0)
624                         break;
625                 currenttimer = inl(ALI_REG(codec,  ALI_STIMER));
626                 cpu_relax();
627         }
628 }
629 
630 static void snd_ali_detect_spdif_rate(struct snd_ali *codec)
631 {
632         u16 wval;
633         u16 count = 0;
634         u8  bval, R1 = 0, R2;
635 
636         bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
637         bval |= 0x1F;
638         outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL + 1));
639 
640         while ((R1 < 0x0b || R1 > 0x0e) && R1 != 0x12 && count <= 50000) {
641                 count ++;
642                 snd_ali_delay(codec, 6);
643                 bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
644                 R1 = bval & 0x1F;
645         }
646 
647         if (count > 50000) {
648                 dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
649                 return;
650         }
651 
652         for (count = 0; count <= 50000; count++) {
653                 snd_ali_delay(codec, 6);
654                 bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
655                 R2 = bval & 0x1F;
656                 if (R2 != R1)
657                         R1 = R2;
658                 else
659                         break;
660         }
661 
662         if (count > 50000) {
663                 dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
664                 return;
665         }
666 
667         if (R2 >= 0x0b && R2 <= 0x0e) {
668                 wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
669                 wval &= 0xe0f0;
670                 wval |= (0x09 << 8) | 0x05;
671                 outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
672 
673                 bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3)) & 0xf0;
674                 outb(bval | 0x02, ALI_REG(codec, ALI_SPDIF_CS + 3));
675         } else if (R2 == 0x12) {
676                 wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
677                 wval &= 0xe0f0;
678                 wval |= (0x0e << 8) | 0x08;
679                 outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
680 
681                 bval  = inb(ALI_REG(codec,ALI_SPDIF_CS + 3)) & 0xf0;
682                 outb(bval | 0x03, ALI_REG(codec, ALI_SPDIF_CS + 3));
683         }
684 }
685 
686 static unsigned int snd_ali_get_spdif_in_rate(struct snd_ali *codec)
687 {
688         u32     dwRate;
689         u8      bval;
690 
691         bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
692         bval &= 0x7f;
693         bval |= 0x40;
694         outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL));
695 
696         snd_ali_detect_spdif_rate(codec);
697 
698         bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3));
699         bval &= 0x0f;
700 
701         switch (bval) {
702         case 0: dwRate = 44100; break;
703         case 1: dwRate = 48000; break;
704         case 2: dwRate = 32000; break;
705         default: dwRate = 0; break;
706         }
707 
708         return dwRate;
709 }
710 
711 static void snd_ali_enable_spdif_in(struct snd_ali *codec)
712 {       
713         unsigned int dwVal;
714 
715         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
716         dwVal |= ALI_SPDIF_IN_SUPPORT;
717         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
718 
719         dwVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
720         dwVal |= 0x02;
721         outb(dwVal, ALI_REG(codec, ALI_SPDIF_CTRL));
722 
723         snd_ali_enable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
724 }
725 
726 static void snd_ali_disable_spdif_in(struct snd_ali *codec)
727 {
728         unsigned int dwVal;
729         
730         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
731         dwVal &= ~ALI_SPDIF_IN_SUPPORT;
732         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
733         
734         snd_ali_disable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);   
735 }
736 
737 
738 static void snd_ali_set_spdif_out_rate(struct snd_ali *codec, unsigned int rate)
739 {
740         unsigned char  bVal;
741         unsigned int  dwRate;
742         
743         switch (rate) {
744         case 32000: dwRate = 0x300; break;
745         case 48000: dwRate = 0x200; break;
746         default: dwRate = 0; break;
747         }
748         
749         bVal  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
750         bVal &= (unsigned char)(~(1<<6));
751         
752         bVal |= 0x80;           /* select right */
753         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
754         outb(dwRate | 0x20, ALI_REG(codec, ALI_SPDIF_CS + 2));
755         
756         bVal &= ~0x80;  /* select left */
757         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
758         outw(rate | 0x10, ALI_REG(codec, ALI_SPDIF_CS + 2));
759 }
760 
761 static void snd_ali_enable_spdif_out(struct snd_ali *codec)
762 {
763         unsigned short wVal;
764         unsigned char bVal;
765         struct pci_dev *pci_dev;
766 
767         pci_dev = codec->pci_m1533;
768         if (pci_dev == NULL)
769                 return;
770         pci_read_config_byte(pci_dev, 0x61, &bVal);
771         bVal |= 0x40;
772         pci_write_config_byte(pci_dev, 0x61, bVal);
773         pci_read_config_byte(pci_dev, 0x7d, &bVal);
774         bVal |= 0x01;
775         pci_write_config_byte(pci_dev, 0x7d, bVal);
776 
777         pci_read_config_byte(pci_dev, 0x7e, &bVal);
778         bVal &= (~0x20);
779         bVal |= 0x10;
780         pci_write_config_byte(pci_dev, 0x7e, bVal);
781 
782         bVal = inb(ALI_REG(codec, ALI_SCTRL));
783         outb(bVal | ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
784 
785         bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
786         outb(bVal & ALI_SPDIF_OUT_CH_STATUS, ALI_REG(codec, ALI_SPDIF_CTRL));
787    
788         wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
789         wVal |= ALI_SPDIF_OUT_SEL_PCM;
790         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
791         snd_ali_disable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
792 }
793 
794 static void snd_ali_enable_spdif_chnout(struct snd_ali *codec)
795 {
796         unsigned short wVal;
797 
798         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
799         wVal &= ~ALI_SPDIF_OUT_SEL_PCM;
800         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
801 /*
802         wVal = inw(ALI_REG(codec, ALI_SPDIF_CS));
803         if (flag & ALI_SPDIF_OUT_NON_PCM)
804                 wVal |= 0x0002;
805         else    
806                 wVal &= (~0x0002);
807         outw(wVal, ALI_REG(codec, ALI_SPDIF_CS));
808 */
809         snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
810 }
811 
812 static void snd_ali_disable_spdif_chnout(struct snd_ali *codec)
813 {
814         unsigned short wVal;
815 
816         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
817         wVal |= ALI_SPDIF_OUT_SEL_PCM;
818         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
819 
820         snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
821 }
822 
823 static void snd_ali_disable_spdif_out(struct snd_ali *codec)
824 {
825         unsigned char  bVal;
826 
827         bVal = inb(ALI_REG(codec, ALI_SCTRL));
828         outb(bVal & ~ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
829 
830         snd_ali_disable_spdif_chnout(codec);
831 }
832 
833 static void snd_ali_update_ptr(struct snd_ali *codec, int channel)
834 {
835         struct snd_ali_voice *pvoice;
836         struct snd_ali_channel_control *pchregs;
837         unsigned int old, mask;
838 
839         pchregs = &(codec->chregs);
840 
841         /* check if interrupt occurred for channel */
842         old  = pchregs->data.aint;
843         mask = 1U << (channel & 0x1f);
844 
845         if (!(old & mask))
846                 return;
847 
848         pvoice = &codec->synth.voices[channel];
849 
850         udelay(100);
851         spin_lock(&codec->reg_lock);
852 
853         if (pvoice->pcm && pvoice->substream) {
854                 /* pcm interrupt */
855                 if (pvoice->running) {
856                         dev_dbg(codec->card->dev,
857                                 "update_ptr: cso=%4.4x cspf=%d.\n",
858                                 inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2)),
859                                 (inl(ALI_REG(codec, ALI_CSPF)) & mask) == mask);
860                         spin_unlock(&codec->reg_lock);
861                         snd_pcm_period_elapsed(pvoice->substream);
862                         spin_lock(&codec->reg_lock);
863                 } else {
864                         snd_ali_stop_voice(codec, channel);
865                         snd_ali_disable_voice_irq(codec, channel);
866                 }       
867         } else if (codec->synth.voices[channel].synth) {
868                 /* synth interrupt */
869         } else if (codec->synth.voices[channel].midi) {
870                 /* midi interrupt */
871         } else {
872                 /* unknown interrupt */
873                 snd_ali_stop_voice(codec, channel);
874                 snd_ali_disable_voice_irq(codec, channel);
875         }
876         spin_unlock(&codec->reg_lock);
877         outl(mask,ALI_REG(codec,pchregs->regs.aint));
878         pchregs->data.aint = old & (~mask);
879 }
880 
881 static irqreturn_t snd_ali_card_interrupt(int irq, void *dev_id)
882 {
883         struct snd_ali  *codec = dev_id;
884         int channel;
885         unsigned int audio_int;
886         struct snd_ali_channel_control *pchregs;
887 
888         if (codec == NULL || !codec->hw_initialized)
889                 return IRQ_NONE;
890 
891         audio_int = inl(ALI_REG(codec, ALI_MISCINT));
892         if (!audio_int)
893                 return IRQ_NONE;
894 
895         pchregs = &(codec->chregs);
896         if (audio_int & ADDRESS_IRQ) {
897                 /* get interrupt status for all channels */
898                 pchregs->data.aint = inl(ALI_REG(codec, pchregs->regs.aint));
899                 for (channel = 0; channel < ALI_CHANNELS; channel++)
900                         snd_ali_update_ptr(codec, channel);
901         }
902         outl((TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
903                 ALI_REG(codec, ALI_MISCINT));
904 
905         return IRQ_HANDLED;
906 }
907 
908 
909 static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec,
910                                                  int type, int rec, int channel)
911 {
912         struct snd_ali_voice *pvoice;
913         int idx;
914 
915         dev_dbg(codec->card->dev, "alloc_voice: type=%d rec=%d\n", type, rec);
916 
917         spin_lock_irq(&codec->voice_alloc);
918         if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
919                 idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
920                         snd_ali_find_free_channel(codec,rec);
921                 if (idx < 0) {
922                         dev_err(codec->card->dev, "ali_alloc_voice: err.\n");
923                         spin_unlock_irq(&codec->voice_alloc);
924                         return NULL;
925                 }
926                 pvoice = &(codec->synth.voices[idx]);
927                 pvoice->codec = codec;
928                 pvoice->use = 1;
929                 pvoice->pcm = 1;
930                 pvoice->mode = rec;
931                 spin_unlock_irq(&codec->voice_alloc);
932                 return pvoice;
933         }
934         spin_unlock_irq(&codec->voice_alloc);
935         return NULL;
936 }
937 
938 
939 static void snd_ali_free_voice(struct snd_ali * codec,
940                                struct snd_ali_voice *pvoice)
941 {
942         void (*private_free)(void *);
943         void *private_data;
944 
945         dev_dbg(codec->card->dev, "free_voice: channel=%d\n", pvoice->number);
946         if (!pvoice->use)
947                 return;
948         snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
949         spin_lock_irq(&codec->voice_alloc);
950         private_free = pvoice->private_free;
951         private_data = pvoice->private_data;
952         pvoice->private_free = NULL;
953         pvoice->private_data = NULL;
954         if (pvoice->pcm)
955                 snd_ali_free_channel_pcm(codec, pvoice->number);
956         pvoice->use = pvoice->pcm = pvoice->synth = 0;
957         pvoice->substream = NULL;
958         spin_unlock_irq(&codec->voice_alloc);
959         if (private_free)
960                 private_free(private_data);
961 }
962 
963 
964 static void snd_ali_clear_voices(struct snd_ali *codec,
965                                  unsigned int v_min,
966                                  unsigned int v_max)
967 {
968         unsigned int i;
969 
970         for (i = v_min; i <= v_max; i++) {
971                 snd_ali_stop_voice(codec, i);
972                 snd_ali_disable_voice_irq(codec, i);
973         }
974 }
975 
976 static void snd_ali_write_voice_regs(struct snd_ali *codec,
977                          unsigned int Channel,
978                          unsigned int LBA,
979                          unsigned int CSO,
980                          unsigned int ESO,
981                          unsigned int DELTA,
982                          unsigned int ALPHA_FMS,
983                          unsigned int GVSEL,
984                          unsigned int PAN,
985                          unsigned int VOL,
986                          unsigned int CTRL,
987                          unsigned int EC)
988 {
989         unsigned int ctlcmds[4];
990         
991         outb((unsigned char)(Channel & 0x001f), ALI_REG(codec, ALI_GC_CIR));
992 
993         ctlcmds[0] =  (CSO << 16) | (ALPHA_FMS & 0x0000ffff);
994         ctlcmds[1] =  LBA;
995         ctlcmds[2] =  (ESO << 16) | (DELTA & 0x0ffff);
996         ctlcmds[3] =  (GVSEL << 31) |
997                       ((PAN & 0x0000007f) << 24) |
998                       ((VOL & 0x000000ff) << 16) |
999                       ((CTRL & 0x0000000f) << 12) |
1000                       (EC & 0x00000fff);
1001 
1002         outb(Channel, ALI_REG(codec, ALI_GC_CIR));
1003 
1004         outl(ctlcmds[0], ALI_REG(codec, ALI_CSO_ALPHA_FMS));
1005         outl(ctlcmds[1], ALI_REG(codec, ALI_LBA));
1006         outl(ctlcmds[2], ALI_REG(codec, ALI_ESO_DELTA));
1007         outl(ctlcmds[3], ALI_REG(codec, ALI_GVSEL_PAN_VOC_CTRL_EC));
1008 
1009         outl(0x30000000, ALI_REG(codec, ALI_EBUF1));    /* Still Mode */
1010         outl(0x30000000, ALI_REG(codec, ALI_EBUF2));    /* Still Mode */
1011 }
1012 
1013 static unsigned int snd_ali_convert_rate(unsigned int rate, int rec)
1014 {
1015         unsigned int delta;
1016 
1017         if (rate < 4000)
1018                 rate = 4000;
1019         if (rate > 48000)
1020                 rate = 48000;
1021 
1022         if (rec) {
1023                 if (rate == 44100)
1024                         delta = 0x116a;
1025                 else if (rate == 8000)
1026                         delta = 0x6000;
1027                 else if (rate == 48000)
1028                         delta = 0x1000;
1029                 else
1030                         delta = ((48000 << 12) / rate) & 0x0000ffff;
1031         } else {
1032                 if (rate == 44100)
1033                         delta = 0xeb3;
1034                 else if (rate == 8000)
1035                         delta = 0x2ab;
1036                 else if (rate == 48000)
1037                         delta = 0x1000;
1038                 else 
1039                         delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
1040         }
1041 
1042         return delta;
1043 }
1044 
1045 static unsigned int snd_ali_control_mode(struct snd_pcm_substream *substream)
1046 {
1047         unsigned int CTRL;
1048         struct snd_pcm_runtime *runtime = substream->runtime;
1049 
1050         /* set ctrl mode
1051            CTRL default: 8-bit (unsigned) mono, loop mode enabled
1052          */
1053         CTRL = 0x00000001;
1054         if (snd_pcm_format_width(runtime->format) == 16)
1055                 CTRL |= 0x00000008;     /* 16-bit data */
1056         if (!snd_pcm_format_unsigned(runtime->format))
1057                 CTRL |= 0x00000002;     /* signed data */
1058         if (runtime->channels > 1)
1059                 CTRL |= 0x00000004;     /* stereo data */
1060         return CTRL;
1061 }
1062 
1063 /*
1064  *  PCM part
1065  */
1066 
1067 static int snd_ali_trigger(struct snd_pcm_substream *substream,
1068                                int cmd)
1069                                     
1070 {
1071         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1072         struct snd_pcm_substream *s;
1073         unsigned int what, whati, capture_flag;
1074         struct snd_ali_voice *pvoice, *evoice;
1075         unsigned int val;
1076         int do_start;
1077 
1078         switch (cmd) {
1079         case SNDRV_PCM_TRIGGER_START:
1080         case SNDRV_PCM_TRIGGER_RESUME:
1081                 do_start = 1;
1082                 break;
1083         case SNDRV_PCM_TRIGGER_STOP:
1084         case SNDRV_PCM_TRIGGER_SUSPEND:
1085                 do_start = 0;
1086                 break;
1087         default:
1088                 return -EINVAL;
1089         }
1090 
1091         what = whati = capture_flag = 0;
1092         snd_pcm_group_for_each_entry(s, substream) {
1093                 if ((struct snd_ali *) snd_pcm_substream_chip(s) == codec) {
1094                         pvoice = s->runtime->private_data;
1095                         evoice = pvoice->extra;
1096                         what |= 1 << (pvoice->number & 0x1f);
1097                         if (evoice == NULL)
1098                                 whati |= 1 << (pvoice->number & 0x1f);
1099                         else {
1100                                 whati |= 1 << (evoice->number & 0x1f);
1101                                 what |= 1 << (evoice->number & 0x1f);
1102                         }
1103                         if (do_start) {
1104                                 pvoice->running = 1;
1105                                 if (evoice != NULL)
1106                                         evoice->running = 1;
1107                         } else {
1108                                 pvoice->running = 0;
1109                                 if (evoice != NULL)
1110                                         evoice->running = 0;
1111                         }
1112                         snd_pcm_trigger_done(s, substream);
1113                         if (pvoice->mode)
1114                                 capture_flag = 1;
1115                 }
1116         }
1117         spin_lock(&codec->reg_lock);
1118         if (!do_start)
1119                 outl(what, ALI_REG(codec, ALI_STOP));
1120         val = inl(ALI_REG(codec, ALI_AINTEN));
1121         if (do_start)
1122                 val |= whati;
1123         else
1124                 val &= ~whati;
1125         outl(val, ALI_REG(codec, ALI_AINTEN));
1126         if (do_start)
1127                 outl(what, ALI_REG(codec, ALI_START));
1128         dev_dbg(codec->card->dev, "trigger: what=%xh whati=%xh\n", what, whati);
1129         spin_unlock(&codec->reg_lock);
1130 
1131         return 0;
1132 }
1133 
1134 static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
1135                                       struct snd_pcm_hw_params *hw_params)
1136 {
1137         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1138         struct snd_pcm_runtime *runtime = substream->runtime;
1139         struct snd_ali_voice *pvoice = runtime->private_data;
1140         struct snd_ali_voice *evoice = pvoice->extra;
1141         int err;
1142 
1143         err = snd_pcm_lib_malloc_pages(substream,
1144                                        params_buffer_bytes(hw_params));
1145         if (err < 0)
1146                 return err;
1147         
1148         /* voice management */
1149 
1150         if (params_buffer_size(hw_params) / 2 !=
1151             params_period_size(hw_params)) {
1152                 if (!evoice) {
1153                         evoice = snd_ali_alloc_voice(codec,
1154                                                      SNDRV_ALI_VOICE_TYPE_PCM,
1155                                                      0, -1);
1156                         if (!evoice)
1157                                 return -ENOMEM;
1158                         pvoice->extra = evoice;
1159                         evoice->substream = substream;
1160                 }
1161         } else {
1162                 if (evoice) {
1163                         snd_ali_free_voice(codec, evoice);
1164                         pvoice->extra = evoice = NULL;
1165                 }
1166         }
1167 
1168         return 0;
1169 }
1170 
1171 static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
1172 {
1173         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1174         struct snd_pcm_runtime *runtime = substream->runtime;
1175         struct snd_ali_voice *pvoice = runtime->private_data;
1176         struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
1177 
1178         snd_pcm_lib_free_pages(substream);
1179         if (evoice) {
1180                 snd_ali_free_voice(codec, evoice);
1181                 pvoice->extra = NULL;
1182         }
1183         return 0;
1184 }
1185 
1186 static int snd_ali_hw_params(struct snd_pcm_substream *substream,
1187                              struct snd_pcm_hw_params *hw_params)
1188 {
1189         return snd_pcm_lib_malloc_pages(substream,
1190                                         params_buffer_bytes(hw_params));
1191 }
1192 
1193 static int snd_ali_hw_free(struct snd_pcm_substream *substream)
1194 {
1195         return snd_pcm_lib_free_pages(substream);
1196 }
1197 
1198 static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
1199 {
1200         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1201         struct snd_pcm_runtime *runtime = substream->runtime;
1202         struct snd_ali_voice *pvoice = runtime->private_data;
1203         struct snd_ali_voice *evoice = pvoice->extra;
1204 
1205         unsigned int LBA;
1206         unsigned int Delta;
1207         unsigned int ESO;
1208         unsigned int CTRL;
1209         unsigned int GVSEL;
1210         unsigned int PAN;
1211         unsigned int VOL;
1212         unsigned int EC;
1213         
1214         dev_dbg(codec->card->dev, "playback_prepare ...\n");
1215 
1216         spin_lock_irq(&codec->reg_lock);        
1217         
1218         /* set Delta (rate) value */
1219         Delta = snd_ali_convert_rate(runtime->rate, 0);
1220 
1221         if (pvoice->number == ALI_SPDIF_IN_CHANNEL || 
1222             pvoice->number == ALI_PCM_IN_CHANNEL)
1223                 snd_ali_disable_special_channel(codec, pvoice->number);
1224         else if (codec->spdif_support &&
1225                  (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
1226                   ALI_SPDIF_OUT_CH_ENABLE)
1227                  && pvoice->number == ALI_SPDIF_OUT_CHANNEL) {
1228                 snd_ali_set_spdif_out_rate(codec, runtime->rate);
1229                 Delta = 0x1000;
1230         }
1231         
1232         /* set Loop Back Address */
1233         LBA = runtime->dma_addr;
1234 
1235         /* set interrupt count size */
1236         pvoice->count = runtime->period_size;
1237 
1238         /* set target ESO for channel */
1239         pvoice->eso = runtime->buffer_size; 
1240 
1241         dev_dbg(codec->card->dev, "playback_prepare: eso=%xh count=%xh\n",
1242                        pvoice->eso, pvoice->count);
1243 
1244         /* set ESO to capture first MIDLP interrupt */
1245         ESO = pvoice->eso -1;
1246         /* set ctrl mode */
1247         CTRL = snd_ali_control_mode(substream);
1248 
1249         GVSEL = 1;
1250         PAN = 0;
1251         VOL = 0;
1252         EC = 0;
1253         dev_dbg(codec->card->dev, "playback_prepare:\n");
1254         dev_dbg(codec->card->dev,
1255                 "ch=%d, Rate=%d Delta=%xh,GVSEL=%xh,PAN=%xh,CTRL=%xh\n",
1256                        pvoice->number,runtime->rate,Delta,GVSEL,PAN,CTRL);
1257         snd_ali_write_voice_regs(codec,
1258                                  pvoice->number,
1259                                  LBA,
1260                                  0,     /* cso */
1261                                  ESO,
1262                                  Delta,
1263                                  0,     /* alpha */
1264                                  GVSEL,
1265                                  PAN,
1266                                  VOL,
1267                                  CTRL,
1268                                  EC);
1269         if (evoice) {
1270                 evoice->count = pvoice->count;
1271                 evoice->eso = pvoice->count << 1;
1272                 ESO = evoice->eso - 1;
1273                 snd_ali_write_voice_regs(codec,
1274                                          evoice->number,
1275                                          LBA,
1276                                          0,     /* cso */
1277                                          ESO,
1278                                          Delta,
1279                                          0,     /* alpha */
1280                                          GVSEL,
1281                                          0x7f,
1282                                          0x3ff,
1283                                          CTRL,
1284                                          EC);
1285         }
1286         spin_unlock_irq(&codec->reg_lock);
1287         return 0;
1288 }
1289 
1290 
1291 static int snd_ali_prepare(struct snd_pcm_substream *substream)
1292 {
1293         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1294         struct snd_pcm_runtime *runtime = substream->runtime;
1295         struct snd_ali_voice *pvoice = runtime->private_data;
1296         unsigned int LBA;
1297         unsigned int Delta;
1298         unsigned int ESO;
1299         unsigned int CTRL;
1300         unsigned int GVSEL;
1301         unsigned int PAN;
1302         unsigned int VOL;
1303         unsigned int EC;
1304         u8       bValue;
1305 
1306         spin_lock_irq(&codec->reg_lock);
1307 
1308         dev_dbg(codec->card->dev, "ali_prepare...\n");
1309 
1310         snd_ali_enable_special_channel(codec,pvoice->number);
1311 
1312         Delta = (pvoice->number == ALI_MODEM_IN_CHANNEL ||
1313                  pvoice->number == ALI_MODEM_OUT_CHANNEL) ? 
1314                 0x1000 : snd_ali_convert_rate(runtime->rate, pvoice->mode);
1315 
1316         /* Prepare capture intr channel */
1317         if (pvoice->number == ALI_SPDIF_IN_CHANNEL) {
1318 
1319                 unsigned int rate;
1320                 
1321                 spin_unlock_irq(&codec->reg_lock);
1322                 if (codec->revision != ALI_5451_V02)
1323                         return -1;
1324 
1325                 rate = snd_ali_get_spdif_in_rate(codec);
1326                 if (rate == 0) {
1327                         dev_warn(codec->card->dev,
1328                                  "ali_capture_prepare: spdif rate detect err!\n");
1329                         rate = 48000;
1330                 }
1331                 spin_lock_irq(&codec->reg_lock);
1332                 bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
1333                 if (bValue & 0x10) {
1334                         outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
1335                         dev_warn(codec->card->dev,
1336                                  "clear SPDIF parity error flag.\n");
1337                 }
1338 
1339                 if (rate != 48000)
1340                         Delta = ((rate << 12) / runtime->rate) & 0x00ffff;
1341         }
1342 
1343         /* set target ESO for channel  */
1344         pvoice->eso = runtime->buffer_size; 
1345 
1346         /* set interrupt count size  */
1347         pvoice->count = runtime->period_size;
1348 
1349         /* set Loop Back Address  */
1350         LBA = runtime->dma_addr;
1351 
1352         /* set ESO to capture first MIDLP interrupt  */
1353         ESO = pvoice->eso - 1;
1354         CTRL = snd_ali_control_mode(substream);
1355         GVSEL = 0;
1356         PAN = 0x00;
1357         VOL = 0x00;
1358         EC = 0;
1359 
1360         snd_ali_write_voice_regs(    codec,
1361                                      pvoice->number,
1362                                      LBA,
1363                                      0, /* cso */
1364                                      ESO,
1365                                      Delta,
1366                                      0, /* alpha */
1367                                      GVSEL,
1368                                      PAN,
1369                                      VOL,
1370                                      CTRL,
1371                                      EC);
1372 
1373         spin_unlock_irq(&codec->reg_lock);
1374 
1375         return 0;
1376 }
1377 
1378 
1379 static snd_pcm_uframes_t
1380 snd_ali_playback_pointer(struct snd_pcm_substream *substream)
1381 {
1382         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1383         struct snd_pcm_runtime *runtime = substream->runtime;
1384         struct snd_ali_voice *pvoice = runtime->private_data;
1385         unsigned int cso;
1386 
1387         spin_lock(&codec->reg_lock);
1388         if (!pvoice->running) {
1389                 spin_unlock(&codec->reg_lock);
1390                 return 0;
1391         }
1392         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1393         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1394         spin_unlock(&codec->reg_lock);
1395         dev_dbg(codec->card->dev, "playback pointer returned cso=%xh.\n", cso);
1396 
1397         cso %= runtime->buffer_size;
1398         return cso;
1399 }
1400 
1401 
1402 static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1403 {
1404         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1405         struct snd_pcm_runtime *runtime = substream->runtime;
1406         struct snd_ali_voice *pvoice = runtime->private_data;
1407         unsigned int cso;
1408 
1409         spin_lock(&codec->reg_lock);
1410         if (!pvoice->running) {
1411                 spin_unlock(&codec->reg_lock);
1412                 return 0;
1413         }
1414         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1415         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1416         spin_unlock(&codec->reg_lock);
1417 
1418         cso %= runtime->buffer_size;
1419         return cso;
1420 }
1421 
1422 static struct snd_pcm_hardware snd_ali_playback =
1423 {
1424         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1425                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1426                          SNDRV_PCM_INFO_MMAP_VALID |
1427                          SNDRV_PCM_INFO_RESUME |
1428                          SNDRV_PCM_INFO_SYNC_START),
1429         .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1430                          SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1431         .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1432         .rate_min =             4000,
1433         .rate_max =             48000,
1434         .channels_min =         1,
1435         .channels_max =         2,
1436         .buffer_bytes_max =     (256*1024),
1437         .period_bytes_min =     64,
1438         .period_bytes_max =     (256*1024),
1439         .periods_min =          1,
1440         .periods_max =          1024,
1441         .fifo_size =            0,
1442 };
1443 
1444 /*
1445  *  Capture support device description
1446  */
1447 
1448 static struct snd_pcm_hardware snd_ali_capture =
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 =     (128*1024),
1463         .period_bytes_min =     64,
1464         .period_bytes_max =     (128*1024),
1465         .periods_min =          1,
1466         .periods_max =          1024,
1467         .fifo_size =            0,
1468 };
1469 
1470 static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1471 {
1472         struct snd_ali_voice *pvoice = runtime->private_data;
1473 
1474         if (pvoice)
1475                 snd_ali_free_voice(pvoice->codec, pvoice);
1476 }
1477 
1478 static int snd_ali_open(struct snd_pcm_substream *substream, int rec,
1479                         int channel, struct snd_pcm_hardware *phw)
1480 {
1481         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1482         struct snd_pcm_runtime *runtime = substream->runtime;
1483         struct snd_ali_voice *pvoice;
1484 
1485         pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec,
1486                                      channel);
1487         if (!pvoice)
1488                 return -EAGAIN;
1489 
1490         pvoice->substream = substream;
1491         runtime->private_data = pvoice;
1492         runtime->private_free = snd_ali_pcm_free_substream;
1493 
1494         runtime->hw = *phw;
1495         snd_pcm_set_sync(substream);
1496         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
1497                                      0, 64*1024);
1498         return 0;
1499 }
1500 
1501 static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1502 {
1503         return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1504 }
1505 
1506 static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1507 {
1508         return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1509 }
1510 
1511 static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1512 {
1513         return 0;
1514 }
1515 
1516 static int snd_ali_close(struct snd_pcm_substream *substream)
1517 {
1518         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1519         struct snd_ali_voice *pvoice = substream->runtime->private_data;
1520 
1521         snd_ali_disable_special_channel(codec,pvoice->number);
1522 
1523         return 0;
1524 }
1525 
1526 static const struct snd_pcm_ops snd_ali_playback_ops = {
1527         .open =         snd_ali_playback_open,
1528         .close =        snd_ali_playback_close,
1529         .ioctl =        snd_pcm_lib_ioctl,
1530         .hw_params =    snd_ali_playback_hw_params,
1531         .hw_free =      snd_ali_playback_hw_free,
1532         .prepare =      snd_ali_playback_prepare,
1533         .trigger =      snd_ali_trigger,
1534         .pointer =      snd_ali_playback_pointer,
1535 };
1536 
1537 static const struct snd_pcm_ops snd_ali_capture_ops = {
1538         .open =         snd_ali_capture_open,
1539         .close =        snd_ali_close,
1540         .ioctl =        snd_pcm_lib_ioctl,
1541         .hw_params =    snd_ali_hw_params,
1542         .hw_free =      snd_ali_hw_free,
1543         .prepare =      snd_ali_prepare,
1544         .trigger =      snd_ali_trigger,
1545         .pointer =      snd_ali_pointer,
1546 };
1547 
1548 /*
1549  * Modem PCM
1550  */
1551 
1552 static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1553                                  struct snd_pcm_hw_params *hw_params)
1554 {
1555         struct snd_ali *chip = snd_pcm_substream_chip(substream);
1556         unsigned int modem_num = chip->num_of_codecs - 1;
1557         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE,
1558                        params_rate(hw_params));
1559         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1560         return snd_ali_hw_params(substream, hw_params);
1561 }
1562 
1563 static struct snd_pcm_hardware snd_ali_modem =
1564 {
1565         .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1566                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
1567                          SNDRV_PCM_INFO_MMAP_VALID |
1568                          SNDRV_PCM_INFO_RESUME |
1569                          SNDRV_PCM_INFO_SYNC_START),
1570         .formats =      SNDRV_PCM_FMTBIT_S16_LE,
1571         .rates =        (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000 |
1572                          SNDRV_PCM_RATE_16000),
1573         .rate_min =             8000,
1574         .rate_max =             16000,
1575         .channels_min =         1,
1576         .channels_max =         1,
1577         .buffer_bytes_max =     (256*1024),
1578         .period_bytes_min =     64,
1579         .period_bytes_max =     (256*1024),
1580         .periods_min =          1,
1581         .periods_max =          1024,
1582         .fifo_size =            0,
1583 };
1584 
1585 static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec,
1586                               int channel)
1587 {
1588         static const unsigned int rates[] = {8000, 9600, 12000, 16000};
1589         static const struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1590                 .count = ARRAY_SIZE(rates),
1591                 .list = rates,
1592                 .mask = 0,
1593         };
1594         int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1595 
1596         if (err)
1597                 return err;
1598         return snd_pcm_hw_constraint_list(substream->runtime, 0,
1599                         SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1600 }
1601 
1602 static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1603 {
1604         return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1605 }
1606 
1607 static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1608 {
1609         return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1610 }
1611 
1612 static const struct snd_pcm_ops snd_ali_modem_playback_ops = {
1613         .open =         snd_ali_modem_playback_open,
1614         .close =        snd_ali_close,
1615         .ioctl =        snd_pcm_lib_ioctl,
1616         .hw_params =    snd_ali_modem_hw_params,
1617         .hw_free =      snd_ali_hw_free,
1618         .prepare =      snd_ali_prepare,
1619         .trigger =      snd_ali_trigger,
1620         .pointer =      snd_ali_pointer,
1621 };
1622 
1623 static const struct snd_pcm_ops snd_ali_modem_capture_ops = {
1624         .open =         snd_ali_modem_capture_open,
1625         .close =        snd_ali_close,
1626         .ioctl =        snd_pcm_lib_ioctl,
1627         .hw_params =    snd_ali_modem_hw_params,
1628         .hw_free =      snd_ali_hw_free,
1629         .prepare =      snd_ali_prepare,
1630         .trigger =      snd_ali_trigger,
1631         .pointer =      snd_ali_pointer,
1632 };
1633 
1634 
1635 struct ali_pcm_description {
1636         char *name;
1637         unsigned int playback_num;
1638         unsigned int capture_num;
1639         const struct snd_pcm_ops *playback_ops;
1640         const struct snd_pcm_ops *capture_ops;
1641         unsigned short class;
1642 };
1643 
1644 
1645 static void snd_ali_pcm_free(struct snd_pcm *pcm)
1646 {
1647         struct snd_ali *codec = pcm->private_data;
1648         codec->pcm[pcm->device] = NULL;
1649 }
1650 
1651 
1652 static int snd_ali_pcm(struct snd_ali *codec, int device,
1653                        struct ali_pcm_description *desc)
1654 {
1655         struct snd_pcm *pcm;
1656         int err;
1657 
1658         err = snd_pcm_new(codec->card, desc->name, device,
1659                           desc->playback_num, desc->capture_num, &pcm);
1660         if (err < 0) {
1661                 dev_err(codec->card->dev,
1662                         "snd_ali_pcm: err called snd_pcm_new.\n");
1663                 return err;
1664         }
1665         pcm->private_data = codec;
1666         pcm->private_free = snd_ali_pcm_free;
1667         if (desc->playback_ops)
1668                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1669                                 desc->playback_ops);
1670         if (desc->capture_ops)
1671                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1672                                 desc->capture_ops);
1673 
1674         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1675                                               snd_dma_pci_data(codec->pci),
1676                                               64*1024, 128*1024);
1677 
1678         pcm->info_flags = 0;
1679         pcm->dev_class = desc->class;
1680         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1681         strcpy(pcm->name, desc->name);
1682         codec->pcm[0] = pcm;
1683         return 0;
1684 }
1685 
1686 static struct ali_pcm_description ali_pcms[] = {
1687         { .name = "ALI 5451",
1688           .playback_num = ALI_CHANNELS,
1689           .capture_num = 1,
1690           .playback_ops = &snd_ali_playback_ops,
1691           .capture_ops = &snd_ali_capture_ops
1692         },
1693         { .name = "ALI 5451 modem",
1694           .playback_num = 1,
1695           .capture_num = 1,
1696           .playback_ops = &snd_ali_modem_playback_ops,
1697           .capture_ops = &snd_ali_modem_capture_ops,
1698           .class = SNDRV_PCM_CLASS_MODEM
1699         }
1700 };
1701 
1702 static int snd_ali_build_pcms(struct snd_ali *codec)
1703 {
1704         int i, err;
1705         for (i = 0; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms); i++) {
1706                 err = snd_ali_pcm(codec, i, &ali_pcms[i]);
1707                 if (err < 0)
1708                         return err;
1709         }
1710         return 0;
1711 }
1712 
1713 
1714 #define ALI5451_SPDIF(xname, xindex, value) \
1715 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1716 .info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1717 .put = snd_ali5451_spdif_put, .private_value = value}
1718 
1719 #define snd_ali5451_spdif_info          snd_ctl_boolean_mono_info
1720 
1721 static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol,
1722                                  struct snd_ctl_elem_value *ucontrol)
1723 {
1724         struct snd_ali *codec = kcontrol->private_data;
1725         unsigned int spdif_enable;
1726 
1727         spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1728 
1729         spin_lock_irq(&codec->reg_lock);
1730         switch (kcontrol->private_value) {
1731         case 0:
1732                 spdif_enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1733                 break;
1734         case 1:
1735                 spdif_enable = ((codec->spdif_mask & 0x02) &&
1736                           (codec->spdif_mask & 0x04)) ? 1 : 0;
1737                 break;
1738         case 2:
1739                 spdif_enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1740                 break;
1741         default:
1742                 break;
1743         }
1744         ucontrol->value.integer.value[0] = spdif_enable;
1745         spin_unlock_irq(&codec->reg_lock);
1746         return 0;
1747 }
1748 
1749 static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol,
1750                                  struct snd_ctl_elem_value *ucontrol)
1751 {
1752         struct snd_ali *codec = kcontrol->private_data;
1753         unsigned int change = 0, spdif_enable = 0;
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                 change = (codec->spdif_mask & 0x02) ? 1 : 0;
1761                 change = change ^ spdif_enable;
1762                 if (change) {
1763                         if (spdif_enable) {
1764                                 codec->spdif_mask |= 0x02;
1765                                 snd_ali_enable_spdif_out(codec);
1766                         } else {
1767                                 codec->spdif_mask &= ~(0x02);
1768                                 codec->spdif_mask &= ~(0x04);
1769                                 snd_ali_disable_spdif_out(codec);
1770                         }
1771                 }
1772                 break;
1773         case 1: 
1774                 change = (codec->spdif_mask & 0x04) ? 1 : 0;
1775                 change = change ^ spdif_enable;
1776                 if (change && (codec->spdif_mask & 0x02)) {
1777                         if (spdif_enable) {
1778                                 codec->spdif_mask |= 0x04;
1779                                 snd_ali_enable_spdif_chnout(codec);
1780                         } else {
1781                                 codec->spdif_mask &= ~(0x04);
1782                                 snd_ali_disable_spdif_chnout(codec);
1783                         }
1784                 }
1785                 break;
1786         case 2:
1787                 change = (codec->spdif_mask & 0x01) ? 1 : 0;
1788                 change = change ^ spdif_enable;
1789                 if (change) {
1790                         if (spdif_enable) {
1791                                 codec->spdif_mask |= 0x01;
1792                                 snd_ali_enable_spdif_in(codec);
1793                         } else {
1794                                 codec->spdif_mask &= ~(0x01);
1795                                 snd_ali_disable_spdif_in(codec);
1796                         }
1797                 }
1798                 break;
1799         default:
1800                 break;
1801         }
1802         spin_unlock_irq(&codec->reg_lock);
1803         
1804         return change;
1805 }
1806 
1807 static struct snd_kcontrol_new snd_ali5451_mixer_spdif[] = {
1808         /* spdif aplayback switch */
1809         /* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1810         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1811         /* spdif out to spdif channel */
1812         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1813         /* spdif in from spdif channel */
1814         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1815 };
1816 
1817 static int snd_ali_mixer(struct snd_ali *codec)
1818 {
1819         struct snd_ac97_template ac97;
1820         unsigned int idx;
1821         int i, err;
1822         static struct snd_ac97_bus_ops ops = {
1823                 .write = snd_ali_codec_write,
1824                 .read = snd_ali_codec_read,
1825         };
1826 
1827         err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus);
1828         if (err < 0)
1829                 return err;
1830 
1831         memset(&ac97, 0, sizeof(ac97));
1832         ac97.private_data = codec;
1833 
1834         for (i = 0; i < codec->num_of_codecs; i++) {
1835                 ac97.num = i;
1836                 err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i]);
1837                 if (err < 0) {
1838                         dev_err(codec->card->dev,
1839                                    "ali mixer %d creating error.\n", i);
1840                         if (i == 0)
1841                                 return err;
1842                         codec->num_of_codecs = 1;
1843                         break;
1844                 }
1845         }
1846 
1847         if (codec->spdif_support) {
1848                 for (idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1849                         err = snd_ctl_add(codec->card,
1850                                           snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1851                         if (err < 0)
1852                                 return err;
1853                 }
1854         }
1855         return 0;
1856 }
1857 
1858 #ifdef CONFIG_PM_SLEEP
1859 static int ali_suspend(struct device *dev)
1860 {
1861         struct snd_card *card = dev_get_drvdata(dev);
1862         struct snd_ali *chip = card->private_data;
1863         struct snd_ali_image *im;
1864         int i, j;
1865 
1866         im = chip->image;
1867         if (!im)
1868                 return 0;
1869 
1870         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1871         for (i = 0; i < chip->num_of_codecs; i++)
1872                 snd_ac97_suspend(chip->ac97[i]);
1873 
1874         spin_lock_irq(&chip->reg_lock);
1875         
1876         im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
1877         /* im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START)); */
1878         im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
1879         
1880         /* disable all IRQ bits */
1881         outl(0, ALI_REG(chip, ALI_MISCINT));
1882         
1883         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1884                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
1885                         continue;
1886                 im->regs[i] = inl(ALI_REG(chip, i*4));
1887         }
1888         
1889         for (i = 0; i < ALI_CHANNELS; i++) {
1890                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1891                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1892                         im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
1893         }
1894 
1895         /* stop all HW channel */
1896         outl(0xffffffff, ALI_REG(chip, ALI_STOP));
1897 
1898         spin_unlock_irq(&chip->reg_lock);
1899         return 0;
1900 }
1901 
1902 static int ali_resume(struct device *dev)
1903 {
1904         struct snd_card *card = dev_get_drvdata(dev);
1905         struct snd_ali *chip = card->private_data;
1906         struct snd_ali_image *im;
1907         int i, j;
1908 
1909         im = chip->image;
1910         if (!im)
1911                 return 0;
1912 
1913         spin_lock_irq(&chip->reg_lock);
1914         
1915         for (i = 0; i < ALI_CHANNELS; i++) {
1916                 outb(i, ALI_REG(chip, ALI_GC_CIR));
1917                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1918                         outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
1919         }
1920         
1921         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1922                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) ||
1923                     (i*4 == ALI_START))
1924                         continue;
1925                 outl(im->regs[i], ALI_REG(chip, i*4));
1926         }
1927         
1928         /* start HW channel */
1929         outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
1930         /* restore IRQ enable bits */
1931         outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
1932         
1933         spin_unlock_irq(&chip->reg_lock);
1934 
1935         for (i = 0 ; i < chip->num_of_codecs; i++)
1936                 snd_ac97_resume(chip->ac97[i]);
1937         
1938         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1939         return 0;
1940 }
1941 
1942 static SIMPLE_DEV_PM_OPS(ali_pm, ali_suspend, ali_resume);
1943 #define ALI_PM_OPS      &ali_pm
1944 #else
1945 #define ALI_PM_OPS      NULL
1946 #endif /* CONFIG_PM_SLEEP */
1947 
1948 static int snd_ali_free(struct snd_ali * codec)
1949 {
1950         if (codec->hw_initialized)
1951                 snd_ali_disable_address_interrupt(codec);
1952         if (codec->irq >= 0)
1953                 free_irq(codec->irq, codec);
1954         if (codec->port)
1955                 pci_release_regions(codec->pci);
1956         pci_disable_device(codec->pci);
1957 #ifdef CONFIG_PM_SLEEP
1958         kfree(codec->image);
1959 #endif
1960         pci_dev_put(codec->pci_m1533);
1961         pci_dev_put(codec->pci_m7101);
1962         kfree(codec);
1963         return 0;
1964 }
1965 
1966 static int snd_ali_chip_init(struct snd_ali *codec)
1967 {
1968         unsigned int legacy;
1969         unsigned char temp;
1970         struct pci_dev *pci_dev;
1971 
1972         dev_dbg(codec->card->dev, "chip initializing ...\n");
1973 
1974         if (snd_ali_reset_5451(codec)) {
1975                 dev_err(codec->card->dev, "ali_chip_init: reset 5451 error.\n");
1976                 return -1;
1977         }
1978 
1979         if (codec->revision == ALI_5451_V02) {
1980                 pci_dev = codec->pci_m1533;
1981                 pci_read_config_byte(pci_dev, 0x59, &temp);
1982                 temp |= 0x80;
1983                 pci_write_config_byte(pci_dev, 0x59, temp);
1984         
1985                 pci_dev = codec->pci_m7101;
1986                 pci_read_config_byte(pci_dev, 0xb8, &temp);
1987                 temp |= 0x20;
1988                 pci_write_config_byte(pci_dev, 0xB8, temp);
1989         }
1990 
1991         pci_read_config_dword(codec->pci, 0x44, &legacy);
1992         legacy &= 0xff00ff00;
1993         legacy |= 0x000800aa;
1994         pci_write_config_dword(codec->pci, 0x44, legacy);
1995 
1996         outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
1997         outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
1998         outl(0xffffffff, ALI_REG(codec, ALI_AINT));
1999         outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
2000         outb(0x10,       ALI_REG(codec, ALI_MPUR2));
2001 
2002         codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
2003         codec->ac97_ext_status = snd_ali_codec_peek(codec, 0,
2004                                                     AC97_EXTENDED_STATUS);
2005         if (codec->spdif_support) {
2006                 snd_ali_enable_spdif_out(codec);
2007                 codec->spdif_mask = 0x00000002;
2008         }
2009 
2010         codec->num_of_codecs = 1;
2011 
2012         /* secondary codec - modem */
2013         if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
2014                 codec->num_of_codecs++;
2015                 outl(inl(ALI_REG(codec, ALI_SCTRL)) |
2016                      (ALI_SCTRL_LINE_IN2 | ALI_SCTRL_GPIO_IN2 |
2017                       ALI_SCTRL_LINE_OUT_EN),
2018                      ALI_REG(codec, ALI_SCTRL));
2019         }
2020 
2021         dev_dbg(codec->card->dev, "chip initialize succeed.\n");
2022         return 0;
2023 
2024 }
2025 
2026 /* proc for register dump */
2027 static void snd_ali_proc_read(struct snd_info_entry *entry,
2028                               struct snd_info_buffer *buf)
2029 {
2030         struct snd_ali *codec = entry->private_data;
2031         int i;
2032         for (i = 0; i < 256 ; i+= 4)
2033                 snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2034 }
2035 
2036 static void snd_ali_proc_init(struct snd_ali *codec)
2037 {
2038         snd_card_ro_proc_new(codec->card, "ali5451", codec, snd_ali_proc_read);
2039 }
2040 
2041 static int snd_ali_resources(struct snd_ali *codec)
2042 {
2043         int err;
2044 
2045         dev_dbg(codec->card->dev, "resources allocation ...\n");
2046         err = pci_request_regions(codec->pci, "ALI 5451");
2047         if (err < 0)
2048                 return err;
2049         codec->port = pci_resource_start(codec->pci, 0);
2050 
2051         if (request_irq(codec->pci->irq, snd_ali_card_interrupt,
2052                         IRQF_SHARED, KBUILD_MODNAME, codec)) {
2053                 dev_err(codec->card->dev, "Unable to request irq.\n");
2054                 return -EBUSY;
2055         }
2056         codec->irq = codec->pci->irq;
2057         dev_dbg(codec->card->dev, "resources allocated.\n");
2058         return 0;
2059 }
2060 static int snd_ali_dev_free(struct snd_device *device)
2061 {
2062         struct snd_ali *codec = device->device_data;
2063         snd_ali_free(codec);
2064         return 0;
2065 }
2066 
2067 static int snd_ali_create(struct snd_card *card,
2068                           struct pci_dev *pci,
2069                           int pcm_streams,
2070                           int spdif_support,
2071                           struct snd_ali **r_ali)
2072 {
2073         struct snd_ali *codec;
2074         int i, err;
2075         unsigned short cmdw;
2076         static struct snd_device_ops ops = {
2077                 .dev_free = snd_ali_dev_free,
2078         };
2079 
2080         *r_ali = NULL;
2081 
2082         dev_dbg(card->dev, "creating ...\n");
2083 
2084         /* enable PCI device */
2085         err = pci_enable_device(pci);
2086         if (err < 0)
2087                 return err;
2088         /* check, if we can restrict PCI DMA transfers to 31 bits */
2089         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(31)) < 0 ||
2090             dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(31)) < 0) {
2091                 dev_err(card->dev,
2092                         "architecture does not support 31bit PCI busmaster DMA\n");
2093                 pci_disable_device(pci);
2094                 return -ENXIO;
2095         }
2096 
2097         codec = kzalloc(sizeof(*codec), GFP_KERNEL);
2098         if (!codec) {
2099                 pci_disable_device(pci);
2100                 return -ENOMEM;
2101         }
2102 
2103         spin_lock_init(&codec->reg_lock);
2104         spin_lock_init(&codec->voice_alloc);
2105 
2106         codec->card = card;
2107         codec->pci = pci;
2108         codec->irq = -1;
2109         codec->revision = pci->revision;
2110         codec->spdif_support = spdif_support;
2111 
2112         if (pcm_streams < 1)
2113                 pcm_streams = 1;
2114         if (pcm_streams > 32)
2115                 pcm_streams = 32;
2116         
2117         pci_set_master(pci);
2118         pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2119         if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2120                 cmdw |= PCI_COMMAND_IO;
2121                 pci_write_config_word(pci, PCI_COMMAND, cmdw);
2122         }
2123         pci_set_master(pci);
2124         
2125         if (snd_ali_resources(codec)) {
2126                 snd_ali_free(codec);
2127                 return -EBUSY;
2128         }
2129 
2130         synchronize_irq(pci->irq);
2131 
2132         codec->synth.chmap = 0;
2133         codec->synth.chcnt = 0;
2134         codec->spdif_mask = 0;
2135         codec->synth.synthcount = 0;
2136 
2137         if (codec->revision == ALI_5451_V02)
2138                 codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2139         else
2140                 codec->chregs.regs.ac97read = ALI_AC97_READ;
2141         codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2142 
2143         codec->chregs.regs.start  = ALI_START;
2144         codec->chregs.regs.stop   = ALI_STOP;
2145         codec->chregs.regs.aint   = ALI_AINT;
2146         codec->chregs.regs.ainten = ALI_AINTEN;
2147 
2148         codec->chregs.data.start  = 0x00;
2149         codec->chregs.data.stop   = 0x00;
2150         codec->chregs.data.aint   = 0x00;
2151         codec->chregs.data.ainten = 0x00;
2152 
2153         /* M1533: southbridge */
2154         codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2155         if (!codec->pci_m1533) {
2156                 dev_err(card->dev, "cannot find ALi 1533 chip.\n");
2157                 snd_ali_free(codec);
2158                 return -ENODEV;
2159         }
2160         /* M7101: power management */
2161         codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2162         if (!codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2163                 dev_err(card->dev, "cannot find ALi 7101 chip.\n");
2164                 snd_ali_free(codec);
2165                 return -ENODEV;
2166         }
2167 
2168         dev_dbg(card->dev, "snd_device_new is called.\n");
2169         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops);
2170         if (err < 0) {
2171                 snd_ali_free(codec);
2172                 return err;
2173         }
2174 
2175         /* initialise synth voices*/
2176         for (i = 0; i < ALI_CHANNELS; i++)
2177                 codec->synth.voices[i].number = i;
2178 
2179         err = snd_ali_chip_init(codec);
2180         if (err < 0) {
2181                 dev_err(card->dev, "ali create: chip init error.\n");
2182                 return err;
2183         }
2184 
2185 #ifdef CONFIG_PM_SLEEP
2186         codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2187         if (!codec->image)
2188                 dev_warn(card->dev, "can't allocate apm buffer\n");
2189 #endif
2190 
2191         snd_ali_enable_address_interrupt(codec);
2192         codec->hw_initialized = 1;
2193 
2194         *r_ali = codec;
2195         dev_dbg(card->dev, "created.\n");
2196         return 0;
2197 }
2198 
2199 static int snd_ali_probe(struct pci_dev *pci,
2200                          const struct pci_device_id *pci_id)
2201 {
2202         struct snd_card *card;
2203         struct snd_ali *codec;
2204         int err;
2205 
2206         dev_dbg(&pci->dev, "probe ...\n");
2207 
2208         err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2209         if (err < 0)
2210                 return err;
2211 
2212         err = snd_ali_create(card, pci, pcm_channels, spdif, &codec);
2213         if (err < 0)
2214                 goto error;
2215         card->private_data = codec;
2216 
2217         dev_dbg(&pci->dev, "mixer building ...\n");
2218         err = snd_ali_mixer(codec);
2219         if (err < 0)
2220                 goto error;
2221         
2222         dev_dbg(&pci->dev, "pcm building ...\n");
2223         err = snd_ali_build_pcms(codec);
2224         if (err < 0)
2225                 goto error;
2226 
2227         snd_ali_proc_init(codec);
2228 
2229         strcpy(card->driver, "ALI5451");
2230         strcpy(card->shortname, "ALI 5451");
2231         
2232         sprintf(card->longname, "%s at 0x%lx, irq %i",
2233                 card->shortname, codec->port, codec->irq);
2234 
2235         dev_dbg(&pci->dev, "register card.\n");
2236         err = snd_card_register(card);
2237         if (err < 0)
2238                 goto error;
2239 
2240         pci_set_drvdata(pci, card);
2241         return 0;
2242 
2243  error:
2244         snd_card_free(card);
2245         return err;
2246 }
2247 
2248 static void snd_ali_remove(struct pci_dev *pci)
2249 {
2250         snd_card_free(pci_get_drvdata(pci));
2251 }
2252 
2253 static struct pci_driver ali5451_driver = {
2254         .name = KBUILD_MODNAME,
2255         .id_table = snd_ali_ids,
2256         .probe = snd_ali_probe,
2257         .remove = snd_ali_remove,
2258         .driver = {
2259                 .pm = ALI_PM_OPS,
2260         },
2261 };                                
2262 
2263 module_pci_driver(ali5451_driver);
2264 

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