[ALSA] Various fixes for suspend/resume of ALSA PCI drivers
[linux-2.6.git] / sound / pci / ali5451 / ali5451.c
1 /*
2  *  Matt Wu <Matt_Wu@acersoftech.com.cn>
3  *  Apr 26, 2001
4  *  Routines for control of ALi pci audio M5451
5  *
6  *  BUGS:
7  *    --
8  *
9  *  TODO:
10  *    --
11  *
12  *   This program is free software; you can redistribute it and/or modify
13  *   it under the terms of the GNU General Public Lcodecnse as published by
14  *   the Free Software Foundation; either version 2 of the Lcodecnse, or
15  *   (at your option) any later version.
16  *
17  *   This program is distributed in the hope that it will be useful,
18  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
19  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  *   GNU General Public Lcodecnse for more details.
21  *
22  *   You should have received a copy of the GNU General Public Lcodecnse
23  *   along with this program; if not, write to the Free Software
24  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
25  *
26  */
27
28 #include <sound/driver.h>
29 #include <asm/io.h>
30 #include <linux/delay.h>
31 #include <linux/interrupt.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/slab.h>
35 #include <linux/moduleparam.h>
36 #include <linux/dma-mapping.h>
37 #include <sound/core.h>
38 #include <sound/pcm.h>
39 #include <sound/info.h>
40 #include <sound/ac97_codec.h>
41 #include <sound/mpu401.h>
42 #include <sound/initval.h>
43
44 MODULE_AUTHOR("Matt Wu <Matt_Wu@acersoftech.com.cn>");
45 MODULE_DESCRIPTION("ALI M5451");
46 MODULE_LICENSE("GPL");
47 MODULE_SUPPORTED_DEVICE("{{ALI,M5451,pci},{ALI,M5451}}");
48
49 static int index = SNDRV_DEFAULT_IDX1;  /* Index */
50 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
51 static int pcm_channels = 32;
52 static int spdif;
53
54 module_param(index, int, 0444);
55 MODULE_PARM_DESC(index, "Index value for ALI M5451 PCI Audio.");
56 module_param(id, charp, 0444);
57 MODULE_PARM_DESC(id, "ID string for ALI M5451 PCI Audio.");
58 module_param(pcm_channels, int, 0444);
59 MODULE_PARM_DESC(pcm_channels, "PCM Channels");
60 module_param(spdif, bool, 0444);
61 MODULE_PARM_DESC(spdif, "Support SPDIF I/O");
62
63 /* just for backward compatibility */
64 static int enable;
65 module_param(enable, bool, 0444);
66
67
68 /*
69  *  Debug part definitions
70  */
71
72 //#define ALI_DEBUG
73
74 #ifdef ALI_DEBUG
75 #define snd_ali_printk(format, args...) printk(format, ##args);
76 #else
77 #define snd_ali_printk(format, args...)
78 #endif
79
80 /*
81  *  Constants definition
82  */
83
84 #define DEVICE_ID_ALI5451       ((PCI_VENDOR_ID_AL<<16)|PCI_DEVICE_ID_AL_M5451)
85
86
87 #define ALI_CHANNELS            32
88
89 #define ALI_PCM_IN_CHANNEL      31
90 #define ALI_SPDIF_IN_CHANNEL    19
91 #define ALI_SPDIF_OUT_CHANNEL   15
92 #define ALI_CENTER_CHANNEL      24
93 #define ALI_LEF_CHANNEL         23
94 #define ALI_SURR_LEFT_CHANNEL   26
95 #define ALI_SURR_RIGHT_CHANNEL  25
96 #define ALI_MODEM_IN_CHANNEL    21
97 #define ALI_MODEM_OUT_CHANNEL   20
98
99 #define SNDRV_ALI_VOICE_TYPE_PCM        01
100 #define SNDRV_ALI_VOICE_TYPE_OTH        02
101
102 #define ALI_5451_V02            0x02
103
104 /*
105  *  Direct Registers
106  */
107
108 #define ALI_LEGACY_DMAR0        0x00  // ADR0
109 #define ALI_LEGACY_DMAR4        0x04  // CNT0
110 #define ALI_LEGACY_DMAR11       0x0b  // MOD 
111 #define ALI_LEGACY_DMAR15       0x0f  // MMR 
112 #define ALI_MPUR0               0x20
113 #define ALI_MPUR1               0x21
114 #define ALI_MPUR2               0x22
115 #define ALI_MPUR3               0x23
116
117 #define ALI_AC97_WRITE          0x40
118 #define ALI_AC97_READ           0x44
119
120 #define ALI_SCTRL               0x48
121 #define   ALI_SPDIF_OUT_ENABLE          0x20
122 #define   ALI_SCTRL_LINE_IN2            (1 << 9)
123 #define   ALI_SCTRL_GPIO_IN2            (1 << 13)
124 #define   ALI_SCTRL_LINE_OUT_EN         (1 << 20)
125 #define   ALI_SCTRL_GPIO_OUT_EN         (1 << 23)
126 #define   ALI_SCTRL_CODEC1_READY        (1 << 24)
127 #define   ALI_SCTRL_CODEC2_READY        (1 << 25)
128 #define ALI_AC97_GPIO           0x4c
129 #define   ALI_AC97_GPIO_ENABLE          0x8000
130 #define   ALI_AC97_GPIO_DATA_SHIFT      16
131 #define ALI_SPDIF_CS            0x70
132 #define ALI_SPDIF_CTRL          0x74
133 #define   ALI_SPDIF_IN_FUNC_ENABLE      0x02
134 #define   ALI_SPDIF_IN_CH_STATUS        0x40
135 #define   ALI_SPDIF_OUT_CH_STATUS       0xbf
136 #define ALI_START               0x80
137 #define ALI_STOP                0x84
138 #define ALI_CSPF                0x90
139 #define ALI_AINT                0x98
140 #define ALI_GC_CIR              0xa0
141         #define ENDLP_IE                0x00001000
142         #define MIDLP_IE                0x00002000
143 #define ALI_AINTEN              0xa4
144 #define ALI_VOLUME              0xa8
145 #define ALI_SBDELTA_DELTA_R     0xac
146 #define ALI_MISCINT             0xb0
147         #define ADDRESS_IRQ             0x00000020
148         #define TARGET_REACHED          0x00008000
149         #define MIXER_OVERFLOW          0x00000800
150         #define MIXER_UNDERFLOW         0x00000400
151         #define GPIO_IRQ                0x01000000
152 #define ALI_SBBL_SBCL           0xc0
153 #define ALI_SBCTRL_SBE2R_SBDD   0xc4
154 #define ALI_STIMER              0xc8
155 #define ALI_GLOBAL_CONTROL      0xd4
156 #define   ALI_SPDIF_OUT_SEL_PCM         0x00000400 /* bit 10 */
157 #define   ALI_SPDIF_IN_SUPPORT          0x00000800 /* bit 11 */
158 #define   ALI_SPDIF_OUT_CH_ENABLE       0x00008000 /* bit 15 */
159 #define   ALI_SPDIF_IN_CH_ENABLE        0x00080000 /* bit 19 */
160 #define   ALI_PCM_IN_ENABLE             0x80000000 /* bit 31 */
161
162 #define ALI_CSO_ALPHA_FMS       0xe0
163 #define ALI_LBA                 0xe4
164 #define ALI_ESO_DELTA           0xe8
165 #define ALI_GVSEL_PAN_VOC_CTRL_EC       0xf0
166 #define ALI_EBUF1               0xf4
167 #define ALI_EBUF2               0xf8
168
169 #define ALI_REG(codec, x) ((codec)->port + x)
170
171 #define MAX_CODECS 2
172
173
174 struct snd_ali;
175 struct snd_ali_voice;
176
177 struct snd_ali_channel_control {
178         // register data
179         struct REGDATA {
180                 unsigned int start;
181                 unsigned int stop;
182                 unsigned int aint;
183                 unsigned int ainten;
184         } data;
185                 
186         // register addresses
187         struct REGS {
188                 unsigned int start;
189                 unsigned int stop;
190                 unsigned int aint;
191                 unsigned int ainten;
192                 unsigned int ac97read;
193                 unsigned int ac97write;
194         } regs;
195
196 };
197
198 struct snd_ali_voice {
199         unsigned int number;
200         unsigned int use: 1,
201             pcm: 1,
202             midi: 1,
203             mode: 1,
204             synth: 1;
205
206         /* PCM data */
207         struct snd_ali *codec;
208         struct snd_pcm_substream *substream;
209         struct snd_ali_voice *extra;
210         
211         unsigned int running: 1;
212
213         int eso;                /* final ESO value for channel */
214         int count;              /* runtime->period_size */
215
216         /* --- */
217
218         void *private_data;
219         void (*private_free)(void *private_data);
220 };
221
222
223 struct snd_alidev {
224
225         struct snd_ali_voice voices[ALI_CHANNELS];      
226
227         unsigned int    chcnt;                  /* num of opened channels */
228         unsigned int    chmap;                  /* bitmap for opened channels */
229         unsigned int synthcount;
230
231 };
232
233
234 #ifdef CONFIG_PM
235 #define ALI_GLOBAL_REGS         56
236 #define ALI_CHANNEL_REGS        8
237 struct snd_ali_image {
238         unsigned long regs[ALI_GLOBAL_REGS];
239         unsigned long channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
240 };
241 #endif
242
243
244 struct snd_ali {
245         unsigned long   irq;
246         unsigned long   port;
247         unsigned char   revision;
248
249         unsigned int hw_initialized: 1;
250         unsigned int spdif_support: 1;
251
252         struct pci_dev  *pci;
253         struct pci_dev  *pci_m1533;
254         struct pci_dev  *pci_m7101;
255
256         struct snd_card *card;
257         struct snd_pcm  *pcm[MAX_CODECS];
258         struct snd_alidev       synth;
259         struct snd_ali_channel_control chregs;
260
261         /* S/PDIF Mask */
262         unsigned int    spdif_mask;
263
264         unsigned int spurious_irq_count;
265         unsigned int spurious_irq_max_delta;
266
267         unsigned int num_of_codecs;
268
269         struct snd_ac97_bus *ac97_bus;
270         struct snd_ac97 *ac97[MAX_CODECS];
271         unsigned short  ac97_ext_id;
272         unsigned short  ac97_ext_status;
273
274         spinlock_t      reg_lock;
275         spinlock_t      voice_alloc;
276
277 #ifdef CONFIG_PM
278         struct snd_ali_image *image;
279 #endif
280 };
281
282 static struct pci_device_id snd_ali_ids[] = {
283         {PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5451), 0, 0, 0},
284         {0, }
285 };
286 MODULE_DEVICE_TABLE(pci, snd_ali_ids);
287
288 static void snd_ali_clear_voices(struct snd_ali *, unsigned int, unsigned int);
289 static unsigned short snd_ali_codec_peek(struct snd_ali *, int, unsigned short);
290 static void snd_ali_codec_poke(struct snd_ali *, int, unsigned short, unsigned short);
291
292 /*
293  *  Debug Part
294  */
295
296 #ifdef ALI_DEBUG
297
298 static void ali_read_regs(struct snd_ali *codec, int channel)
299 {
300         int i,j;
301         unsigned int dwVal;
302
303         printk("channel %d registers map:\n", channel);
304         outb((unsigned char)(channel & 0x001f), ALI_REG(codec,ALI_GC_CIR));
305
306         printk("    ");
307         for(j=0;j<8;j++)
308                 printk("%2.2x       ", j*4);
309         printk("\n");
310
311         for (i=0; i<=0xf8/4;i++) {
312                 if(i%8 == 0)
313                         printk("%2.2x  ", (i*4/0x10)*0x10);
314                 dwVal = inl(ALI_REG(codec,i*4));
315                 printk("%8.8x ", dwVal);
316                 if ((i+1)%8 == 0)
317                         printk("\n");
318         }
319         printk("\n");
320 }
321 static void ali_read_cfg(unsigned int vendor, unsigned deviceid)
322 {
323         unsigned int dwVal;
324         struct pci_dev *pci_dev;
325         int i,j;
326
327         pci_dev = pci_get_device(vendor, deviceid, NULL);
328         if (pci_dev == NULL)
329                 return ;
330
331         printk("\nM%x PCI CFG\n", deviceid);
332         printk("    ");
333         for(j=0;j<8;j++)
334                 printk("%d        ",j);
335         printk("\n");
336
337         for(i=0;i<8;i++) {
338                 printk("%d   ",i);
339                 for(j=0;j<8;j++)
340                 {
341                         pci_read_config_dword(pci_dev, i*0x20+j*4, &dwVal);
342                         printk("%8.8x ", dwVal);
343                 }
344                 printk("\n");
345         }
346         pci_dev_put(pci_dev);
347  }
348 static void ali_read_ac97regs(struct snd_ali *codec, int secondary)
349 {
350         unsigned short i,j;
351         unsigned short wVal;
352
353         printk("\ncodec %d registers map:\n", secondary);
354
355         printk("    ");
356         for(j=0;j<8;j++)
357                 printk("%2.2x   ",j*2);
358         printk("\n");
359
360         for (i=0; i<64;i++) {
361                 if(i%8 == 0)
362                         printk("%2.2x  ", (i/8)*0x10);
363                 wVal = snd_ali_codec_peek(codec, secondary, i*2);
364                 printk("%4.4x ", wVal);
365                 if ((i+1)%8 == 0)
366                         printk("\n");
367         }
368         printk("\n");
369 }
370
371 #endif
372
373 /*
374  *  AC97 ACCESS
375  */
376
377 static inline unsigned int snd_ali_5451_peek(struct snd_ali *codec,
378                                                 unsigned int port )
379 {
380         return (unsigned int)inl(ALI_REG(codec, port)); 
381 }
382
383 static inline void snd_ali_5451_poke(   struct snd_ali *codec,
384                                         unsigned int port,
385                                         unsigned int val )
386 {
387         outl((unsigned int)val, ALI_REG(codec, port));
388 }
389
390 static int snd_ali_codec_ready( struct snd_ali *codec,
391                                 unsigned int port )
392 {
393         unsigned long end_time;
394         unsigned int res;
395         
396         end_time = jiffies + msecs_to_jiffies(250);
397         do {
398                 res = snd_ali_5451_peek(codec,port);
399                 if (! (res & 0x8000))
400                         return 0;
401                 schedule_timeout_uninterruptible(1);
402         } while (time_after_eq(end_time, jiffies));
403         snd_ali_5451_poke(codec, port, res & ~0x8000);
404         snd_printdd("ali_codec_ready: codec is not ready.\n ");
405         return -EIO;
406 }
407
408 static int snd_ali_stimer_ready(struct snd_ali *codec)
409 {
410         unsigned long end_time;
411         unsigned long dwChk1,dwChk2;
412         
413         dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
414         dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
415
416         end_time = jiffies + msecs_to_jiffies(250);
417         do {
418                 dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
419                 if (dwChk2 != dwChk1)
420                         return 0;
421                 schedule_timeout_uninterruptible(1);
422         } while (time_after_eq(end_time, jiffies));
423         snd_printk(KERN_ERR "ali_stimer_read: stimer is not ready.\n");
424         return -EIO;
425 }
426
427 static void snd_ali_codec_poke(struct snd_ali *codec,int secondary,
428                                      unsigned short reg,
429                                      unsigned short val)
430 {
431         unsigned int dwVal = 0;
432         unsigned int port = 0;
433
434         if (reg >= 0x80) {
435                 snd_printk(KERN_ERR "ali_codec_poke: reg(%xh) invalid.\n", reg);
436                 return;
437         }
438
439         port = codec->chregs.regs.ac97write;
440
441         if (snd_ali_codec_ready(codec, port) < 0)
442                 return;
443         if (snd_ali_stimer_ready(codec) < 0)
444                 return;
445
446         dwVal  = (unsigned int) (reg & 0xff);
447         dwVal |= 0x8000 | (val << 16);
448         if (secondary) dwVal |= 0x0080;
449         if (codec->revision == ALI_5451_V02) dwVal |= 0x0100;
450
451         snd_ali_5451_poke(codec,port,dwVal);
452
453         return ;
454 }
455
456 static unsigned short snd_ali_codec_peek( struct snd_ali *codec,
457                                           int secondary,
458                                           unsigned short reg)
459 {
460         unsigned int dwVal = 0;
461         unsigned int port = 0;
462
463         if (reg >= 0x80) {
464                 snd_printk(KERN_ERR "ali_codec_peek: reg(%xh) invalid.\n", reg);
465                 return ~0;
466         }
467
468         port = codec->chregs.regs.ac97read;
469
470         if (snd_ali_codec_ready(codec, port) < 0)
471                 return ~0;
472         if (snd_ali_stimer_ready(codec) < 0)
473                 return ~0;
474
475         dwVal  = (unsigned int) (reg & 0xff);
476         dwVal |= 0x8000;                                /* bit 15*/
477         if (secondary) dwVal |= 0x0080;
478
479         snd_ali_5451_poke(codec, port, dwVal);
480
481         if (snd_ali_stimer_ready(codec) < 0)
482                 return ~0;
483         if (snd_ali_codec_ready(codec, port) < 0)
484                 return ~0;
485         
486         return (snd_ali_5451_peek(codec, port) & 0xffff0000)>>16;
487 }
488
489 static void snd_ali_codec_write(struct snd_ac97 *ac97,
490                                 unsigned short reg,
491                                 unsigned short val )
492 {
493         struct snd_ali *codec = ac97->private_data;
494
495         snd_ali_printk("codec_write: reg=%xh data=%xh.\n", reg, val);
496         if(reg == AC97_GPIO_STATUS) {
497                 outl((val << ALI_AC97_GPIO_DATA_SHIFT)|ALI_AC97_GPIO_ENABLE,
498                         ALI_REG(codec, ALI_AC97_GPIO));
499                 return;
500         }
501         snd_ali_codec_poke(codec, ac97->num, reg, val);
502         return ;
503 }
504
505
506 static unsigned short snd_ali_codec_read(struct snd_ac97 *ac97, unsigned short reg)
507 {
508         struct snd_ali *codec = ac97->private_data;
509
510         snd_ali_printk("codec_read reg=%xh.\n", reg);
511         return (snd_ali_codec_peek(codec, ac97->num, reg));
512 }
513
514 /*
515  *      AC97 Reset
516  */
517
518 static int snd_ali_reset_5451(struct snd_ali *codec)
519 {
520         struct pci_dev *pci_dev = NULL;
521         unsigned short wCount, wReg;
522         unsigned int   dwVal;
523         
524         if ((pci_dev = codec->pci_m1533) != NULL) {
525                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
526                 pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
527                 udelay(5000);
528                 pci_read_config_dword(pci_dev, 0x7c, &dwVal);
529                 pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
530                 udelay(5000);
531         }
532         
533         pci_dev = codec->pci;
534         pci_read_config_dword(pci_dev, 0x44, &dwVal);
535         pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
536         udelay(500);
537         pci_read_config_dword(pci_dev, 0x44, &dwVal);
538         pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
539         udelay(5000);
540         
541         wCount = 200;
542         while(wCount--) {
543                 wReg = snd_ali_codec_peek(codec, 0, AC97_POWERDOWN);
544                 if((wReg & 0x000f) == 0x000f)
545                         return 0;
546                 udelay(5000);
547         }
548
549         /* non-fatal if you have a non PM capable codec */
550         /* snd_printk(KERN_WARNING "ali5451: reset time out\n"); */
551         return 0;
552 }
553
554 #ifdef CODEC_RESET
555
556 static int snd_ali_reset_codec(struct snd_ali *codec)
557 {
558         struct pci_dev *pci_dev = NULL;
559         unsigned char bVal = 0;
560         unsigned int   dwVal;
561         unsigned short wCount, wReg;
562
563         pci_dev = codec->pci_m1533;
564         
565         pci_read_config_dword(pci_dev, 0x7c, &dwVal);
566         pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
567         udelay(5000);
568         pci_read_config_dword(pci_dev, 0x7c, &dwVal);
569         pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
570         udelay(5000);
571
572         bVal = inb(ALI_REG(codec,ALI_SCTRL));
573         bVal |= 0x02;
574         outb(ALI_REG(codec,ALI_SCTRL),bVal);
575         udelay(5000);
576         bVal = inb(ALI_REG(codec,ALI_SCTRL));
577         bVal &= 0xfd;
578         outb(ALI_REG(codec,ALI_SCTRL),bVal);
579         udelay(15000);
580
581         wCount = 200;
582         while(wCount--) {
583                 wReg = snd_ali_codec_read(codec->ac97, AC97_POWERDOWN);
584                 if((wReg & 0x000f) == 0x000f)
585                         return 0;
586                 udelay(5000);
587         }
588         return -1;
589 }
590
591 #endif
592
593 /*
594  *  ALI 5451 Controller
595  */
596
597 static void snd_ali_enable_special_channel(struct snd_ali *codec, unsigned int channel)
598 {
599         unsigned long dwVal = 0;
600
601         dwVal  = inl(ALI_REG(codec,ALI_GLOBAL_CONTROL));
602         dwVal |= 1 << (channel & 0x0000001f);
603         outl(dwVal, ALI_REG(codec,ALI_GLOBAL_CONTROL));
604 }
605
606 static void snd_ali_disable_special_channel(struct snd_ali *codec, unsigned int channel)
607 {
608         unsigned long dwVal = 0;
609
610         dwVal  = inl(ALI_REG(codec,ALI_GLOBAL_CONTROL));
611         dwVal &= ~(1 << (channel & 0x0000001f));
612         outl(dwVal, ALI_REG(codec,ALI_GLOBAL_CONTROL));
613 }
614
615 static void snd_ali_enable_address_interrupt(struct snd_ali * codec)
616 {
617         unsigned int gc;
618
619         gc  = inl(ALI_REG(codec, ALI_GC_CIR));
620         gc |= ENDLP_IE;
621         gc |= MIDLP_IE;
622         outl( gc, ALI_REG(codec, ALI_GC_CIR));
623 }
624
625 static void snd_ali_disable_address_interrupt(struct snd_ali * codec)
626 {
627         unsigned int gc;
628
629         gc  = inl(ALI_REG(codec, ALI_GC_CIR));
630         gc &= ~ENDLP_IE;
631         gc &= ~MIDLP_IE;
632         outl(gc, ALI_REG(codec, ALI_GC_CIR));
633 }
634
635 #if 0 // not used
636 static void snd_ali_enable_voice_irq(struct snd_ali *codec, unsigned int channel)
637 {
638         unsigned int mask;
639         struct snd_ali_channel_control *pchregs = &(codec->chregs);
640
641         snd_ali_printk("enable_voice_irq channel=%d\n",channel);
642         
643         mask = 1 << (channel & 0x1f);
644         pchregs->data.ainten  = inl(ALI_REG(codec,pchregs->regs.ainten));
645         pchregs->data.ainten |= mask;
646         outl(pchregs->data.ainten,ALI_REG(codec,pchregs->regs.ainten));
647 }
648 #endif
649
650 static void snd_ali_disable_voice_irq(struct snd_ali *codec, unsigned int channel)
651 {
652         unsigned int mask;
653         struct snd_ali_channel_control *pchregs = &(codec->chregs);
654
655         snd_ali_printk("disable_voice_irq channel=%d\n",channel);
656
657         mask = 1 << (channel & 0x1f);
658         pchregs->data.ainten  = inl(ALI_REG(codec,pchregs->regs.ainten));
659         pchregs->data.ainten &= ~mask;
660         outl(pchregs->data.ainten,ALI_REG(codec,pchregs->regs.ainten));
661 }
662
663 static int snd_ali_alloc_pcm_channel(struct snd_ali *codec, int channel)
664 {
665         unsigned int idx =  channel & 0x1f;
666
667         if (codec->synth.chcnt >= ALI_CHANNELS){
668                 snd_printk(KERN_ERR "ali_alloc_pcm_channel: no free channels.\n");
669                 return -1;
670         }
671
672         if (!(codec->synth.chmap & (1 << idx))) {
673                 codec->synth.chmap |= 1 << idx;
674                 codec->synth.chcnt++;
675                 snd_ali_printk("alloc_pcm_channel no. %d.\n",idx);
676                 return idx;
677         }
678         return -1;
679 }
680
681 static int snd_ali_find_free_channel(struct snd_ali * codec, int rec)
682 {
683         int idx;
684         int result = -1;
685
686         snd_ali_printk("find_free_channel: for %s\n",rec ? "rec" : "pcm");
687
688         // recording
689         if (rec) {
690                 if (codec->spdif_support &&
691                     (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) & ALI_SPDIF_IN_SUPPORT))
692                         idx = ALI_SPDIF_IN_CHANNEL;
693                 else
694                         idx = ALI_PCM_IN_CHANNEL;
695
696                 if ((result = snd_ali_alloc_pcm_channel(codec,idx)) >= 0) {
697                         return result;
698                 } else {
699                         snd_printk(KERN_ERR "ali_find_free_channel: record channel is busy now.\n");
700                         return -1;
701                 }
702         }
703
704         //playback...
705         if (codec->spdif_support &&
706             (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) & ALI_SPDIF_OUT_CH_ENABLE)) {
707                 idx = ALI_SPDIF_OUT_CHANNEL;
708                 if ((result = snd_ali_alloc_pcm_channel(codec,idx)) >= 0) {
709                         return result;
710                 } else {
711                         snd_printk(KERN_ERR "ali_find_free_channel: S/PDIF out channel is in busy now.\n");
712                 }
713         }
714
715         for (idx = 0; idx < ALI_CHANNELS; idx++) {
716                 if ((result = snd_ali_alloc_pcm_channel(codec,idx)) >= 0)
717                         return result;
718         }
719         snd_printk(KERN_ERR "ali_find_free_channel: no free channels.\n");
720         return -1;
721 }
722
723 static void snd_ali_free_channel_pcm(struct snd_ali *codec, int channel)
724 {
725         unsigned int idx = channel & 0x0000001f;
726
727         snd_ali_printk("free_channel_pcm channel=%d\n",channel);
728
729         if (channel < 0 || channel >= ALI_CHANNELS)
730                 return;
731
732         if (!(codec->synth.chmap & (1 << idx))) {
733                 snd_printk(KERN_ERR "ali_free_channel_pcm: channel %d is not in use.\n",channel);
734                 return;
735         } else {
736                 codec->synth.chmap &= ~(1 << idx);
737                 codec->synth.chcnt--;
738         }
739 }
740
741 #if 0 // not used
742 static void snd_ali_start_voice(struct snd_ali * codec, unsigned int channel)
743 {
744         unsigned int mask = 1 << (channel & 0x1f);
745         
746         snd_ali_printk("start_voice: channel=%d\n",channel);
747         outl(mask, ALI_REG(codec,codec->chregs.regs.start));
748 }
749 #endif
750
751 static void snd_ali_stop_voice(struct snd_ali * codec, unsigned int channel)
752 {
753         unsigned int mask = 1 << (channel & 0x1f);
754
755         snd_ali_printk("stop_voice: channel=%d\n",channel);
756         outl(mask, ALI_REG(codec, codec->chregs.regs.stop));
757 }
758
759 /*
760  *    S/PDIF Part
761  */
762
763 static void snd_ali_delay(struct snd_ali *codec,int interval)
764 {
765         unsigned long  begintimer,currenttimer;
766
767         begintimer   = inl(ALI_REG(codec, ALI_STIMER));
768         currenttimer = inl(ALI_REG(codec, ALI_STIMER));
769
770         while (currenttimer < begintimer + interval) {
771                 if(snd_ali_stimer_ready(codec) < 0)
772                         break;
773                 currenttimer = inl(ALI_REG(codec,  ALI_STIMER));
774         }
775 }
776
777 static void snd_ali_detect_spdif_rate(struct snd_ali *codec)
778 {
779         u16 wval  = 0;
780         u16 count = 0;
781         u8  bval = 0, R1 = 0, R2 = 0;
782
783         bval  = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
784         bval |= 0x1F;
785         outb(bval,ALI_REG(codec,ALI_SPDIF_CTRL + 1));
786
787         while (((R1 < 0x0B )||(R1 > 0x0E)) && (R1 != 0x12) && count <= 50000) {
788                 count ++;
789                 snd_ali_delay(codec, 6);
790                 bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
791                 R1 = bval & 0x1F;
792         }
793
794         if (count > 50000) {
795                 snd_printk(KERN_ERR "ali_detect_spdif_rate: timeout!\n");
796                 return;
797         }
798
799         count = 0;
800         while (count++ <= 50000) {
801                 snd_ali_delay(codec, 6);
802                 bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
803                 R2 = bval & 0x1F;
804                 if (R2 != R1) R1 = R2; else break;
805         }
806
807         if (count > 50000) {
808                 snd_printk(KERN_ERR "ali_detect_spdif_rate: timeout!\n");
809                 return;
810         }
811
812         if (R2 >= 0x0b && R2 <= 0x0e) {
813                 wval  = inw(ALI_REG(codec,ALI_SPDIF_CTRL + 2));
814                 wval &= 0xE0F0;
815                 wval |= (u16)0x09 << 8 | (u16)0x05;
816                 outw(wval,ALI_REG(codec,ALI_SPDIF_CTRL + 2));
817
818                 bval  = inb(ALI_REG(codec,ALI_SPDIF_CS +3)) & 0xF0;
819                 outb(bval|0x02,ALI_REG(codec,ALI_SPDIF_CS + 3));
820         } else if (R2 == 0x12) {
821                 wval  = inw(ALI_REG(codec,ALI_SPDIF_CTRL + 2));
822                 wval &= 0xE0F0;
823                 wval |= (u16)0x0E << 8 | (u16)0x08;
824                 outw(wval,ALI_REG(codec,ALI_SPDIF_CTRL + 2));
825
826                 bval  = inb(ALI_REG(codec,ALI_SPDIF_CS +3)) & 0xF0;
827                 outb(bval|0x03,ALI_REG(codec,ALI_SPDIF_CS + 3));
828         }
829 }
830
831 static unsigned int snd_ali_get_spdif_in_rate(struct snd_ali *codec)
832 {
833         u32     dwRate = 0;
834         u8      bval = 0;
835
836         bval  = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
837         bval &= 0x7F;
838         bval |= 0x40;
839         outb(bval, ALI_REG(codec,ALI_SPDIF_CTRL));
840
841         snd_ali_detect_spdif_rate(codec);
842
843         bval  = inb(ALI_REG(codec,ALI_SPDIF_CS + 3));
844         bval &= 0x0F;
845
846         if (bval == 0) dwRate = 44100;
847         if (bval == 1) dwRate = 48000;
848         if (bval == 2) dwRate = 32000;
849
850         return dwRate;
851 }
852
853 static void snd_ali_enable_spdif_in(struct snd_ali *codec)
854 {       
855         unsigned int dwVal;
856
857         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
858         dwVal |= ALI_SPDIF_IN_SUPPORT;
859         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
860
861         dwVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
862         dwVal |= 0x02;
863         outb(dwVal, ALI_REG(codec, ALI_SPDIF_CTRL));
864
865         snd_ali_enable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
866 }
867
868 static void snd_ali_disable_spdif_in(struct snd_ali *codec)
869 {
870         unsigned int dwVal;
871         
872         dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
873         dwVal &= ~ALI_SPDIF_IN_SUPPORT;
874         outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
875         
876         snd_ali_disable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);   
877 }
878
879
880 static void snd_ali_set_spdif_out_rate(struct snd_ali *codec, unsigned int rate)
881 {
882         unsigned char  bVal;
883         unsigned int  dwRate = 0;
884         
885         if (rate == 32000) dwRate = 0x300;
886         if (rate == 44100) dwRate = 0;
887         if (rate == 48000) dwRate = 0x200;
888         
889         bVal  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
890         bVal &= (unsigned char)(~(1<<6));
891         
892         bVal |= 0x80;           //select right
893         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
894         outb(dwRate | 0x20, ALI_REG(codec, ALI_SPDIF_CS + 2));
895         
896         bVal &= (~0x80);        //select left
897         outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
898         outw(rate | 0x10, ALI_REG(codec, ALI_SPDIF_CS + 2));
899 }
900
901 static void snd_ali_enable_spdif_out(struct snd_ali *codec)
902 {
903         unsigned short wVal;
904         unsigned char bVal;
905
906         struct pci_dev *pci_dev = NULL;
907
908         pci_dev = codec->pci_m1533;
909         if (pci_dev == NULL)
910                 return;
911         pci_read_config_byte(pci_dev, 0x61, &bVal);
912         bVal |= 0x40;
913         pci_write_config_byte(pci_dev, 0x61, bVal);
914         pci_read_config_byte(pci_dev, 0x7d, &bVal);
915         bVal |= 0x01;
916         pci_write_config_byte(pci_dev, 0x7d, bVal);
917
918         pci_read_config_byte(pci_dev, 0x7e, &bVal);
919         bVal &= (~0x20);
920         bVal |= 0x10;
921         pci_write_config_byte(pci_dev, 0x7e, bVal);
922
923         bVal = inb(ALI_REG(codec, ALI_SCTRL));
924         outb(bVal | ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
925
926         bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
927         outb(bVal & ALI_SPDIF_OUT_CH_STATUS, ALI_REG(codec, ALI_SPDIF_CTRL));
928    
929         {
930                 wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
931                 wVal |= ALI_SPDIF_OUT_SEL_PCM;
932                 outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
933                 snd_ali_disable_special_channel(codec,ALI_SPDIF_OUT_CHANNEL);
934         }
935 }
936
937 static void snd_ali_enable_spdif_chnout(struct snd_ali *codec)
938 {
939         unsigned short wVal = 0;
940
941         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
942         wVal &= ~ALI_SPDIF_OUT_SEL_PCM;
943         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
944 /*
945         wVal = inw(ALI_REG(codec, ALI_SPDIF_CS));
946         if (flag & ALI_SPDIF_OUT_NON_PCM)
947                 wVal |= 0x0002;
948         else    
949                 wVal &= (~0x0002);
950         outw(wVal, ALI_REG(codec, ALI_SPDIF_CS));
951 */
952         snd_ali_enable_special_channel(codec,ALI_SPDIF_OUT_CHANNEL);
953 }
954
955 static void snd_ali_disable_spdif_chnout(struct snd_ali *codec)
956 {
957         unsigned short wVal = 0;
958         wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
959         wVal |= ALI_SPDIF_OUT_SEL_PCM;
960         outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
961
962         snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
963 }
964
965 static void snd_ali_disable_spdif_out(struct snd_ali *codec)
966 {
967         unsigned char  bVal;
968
969         bVal = inb(ALI_REG(codec, ALI_SCTRL));
970         outb(bVal & ~ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
971
972         snd_ali_disable_spdif_chnout(codec);
973 }
974
975 static void snd_ali_update_ptr(struct snd_ali *codec,int channel)
976 {
977         struct snd_ali_voice *pvoice = NULL;
978         struct snd_pcm_runtime *runtime;
979         struct snd_ali_channel_control *pchregs = NULL;
980         unsigned int old, mask;
981 #ifdef ALI_DEBUG
982         unsigned int temp, cspf;
983 #endif
984
985         pchregs = &(codec->chregs);
986
987         // check if interrupt occurred for channel
988         old  = pchregs->data.aint;
989         mask = ((unsigned int) 1L) << (channel & 0x1f);
990
991         if (!(old & mask))
992                 return;
993
994         pvoice = &codec->synth.voices[channel];
995         runtime = pvoice->substream->runtime;
996
997         udelay(100);
998         spin_lock(&codec->reg_lock);
999
1000         if (pvoice->pcm && pvoice->substream) {
1001                 /* pcm interrupt */
1002 #ifdef ALI_DEBUG
1003                 outb((u8)(pvoice->number), ALI_REG(codec, ALI_GC_CIR));
1004                 temp = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1005                 cspf = (inl(ALI_REG(codec, ALI_CSPF)) & mask) == mask;
1006 #endif
1007                 if (pvoice->running) {
1008                         snd_ali_printk("update_ptr: cso=%4.4x cspf=%d.\n",(u16)temp,cspf);
1009                         spin_unlock(&codec->reg_lock);
1010                         snd_pcm_period_elapsed(pvoice->substream);
1011                         spin_lock(&codec->reg_lock);
1012                 } else {
1013                         snd_ali_stop_voice(codec, channel);
1014                         snd_ali_disable_voice_irq(codec, channel);
1015                 }       
1016         } else if (codec->synth.voices[channel].synth) {
1017                 /* synth interrupt */
1018         } else if (codec->synth.voices[channel].midi) {
1019                 /* midi interrupt */
1020         } else {
1021                 /* unknown interrupt */
1022                 snd_ali_stop_voice(codec, channel);
1023                 snd_ali_disable_voice_irq(codec, channel);
1024         }
1025         spin_unlock(&codec->reg_lock);
1026         outl(mask,ALI_REG(codec,pchregs->regs.aint));
1027         pchregs->data.aint = old & (~mask);
1028 }
1029
1030 static void snd_ali_interrupt(struct snd_ali * codec)
1031 {
1032         int channel;
1033         unsigned int audio_int;
1034         struct snd_ali_channel_control *pchregs = NULL;
1035         pchregs = &(codec->chregs);
1036
1037         audio_int = inl(ALI_REG(codec, ALI_MISCINT));
1038         if (audio_int & ADDRESS_IRQ) {
1039                 // get interrupt status for all channels
1040                 pchregs->data.aint = inl(ALI_REG(codec,pchregs->regs.aint));
1041                 for (channel = 0; channel < ALI_CHANNELS; channel++) {
1042                         snd_ali_update_ptr(codec, channel);
1043                 }
1044         }
1045         outl((TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
1046                 ALI_REG(codec,ALI_MISCINT));
1047 }
1048
1049
1050 static irqreturn_t snd_ali_card_interrupt(int irq, void *dev_id)
1051 {
1052         struct snd_ali  *codec = dev_id;
1053
1054         if (codec == NULL)
1055                 return IRQ_NONE;
1056         snd_ali_interrupt(codec);
1057         return IRQ_HANDLED;
1058 }
1059
1060
1061 static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec, int type, int rec, int channel)
1062 {
1063         struct snd_ali_voice *pvoice = NULL;
1064         int idx;
1065
1066         snd_ali_printk("alloc_voice: type=%d rec=%d\n",type,rec);
1067
1068         spin_lock_irq(&codec->voice_alloc);
1069         if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
1070                 idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
1071                         snd_ali_find_free_channel(codec,rec);
1072                 if(idx < 0) {
1073                         snd_printk(KERN_ERR "ali_alloc_voice: err.\n");
1074                         spin_unlock_irq(&codec->voice_alloc);
1075                         return NULL;
1076                 }
1077                 pvoice = &(codec->synth.voices[idx]);
1078                 pvoice->codec = codec;
1079                 pvoice->use = 1;
1080                 pvoice->pcm = 1;
1081                 pvoice->mode = rec;
1082                 spin_unlock_irq(&codec->voice_alloc);
1083                 return pvoice;
1084         }
1085         spin_unlock_irq(&codec->voice_alloc);
1086         return NULL;
1087 }
1088
1089
1090 static void snd_ali_free_voice(struct snd_ali * codec, struct snd_ali_voice *pvoice)
1091 {
1092         void (*private_free)(void *);
1093         void *private_data;
1094
1095         snd_ali_printk("free_voice: channel=%d\n",pvoice->number);
1096         if (pvoice == NULL || !pvoice->use)
1097                 return;
1098         snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
1099         spin_lock_irq(&codec->voice_alloc);
1100         private_free = pvoice->private_free;
1101         private_data = pvoice->private_data;
1102         pvoice->private_free = NULL;
1103         pvoice->private_data = NULL;
1104         if (pvoice->pcm) {
1105                 snd_ali_free_channel_pcm(codec, pvoice->number);
1106         }
1107         pvoice->use = pvoice->pcm = pvoice->synth = 0;
1108         pvoice->substream = NULL;
1109         spin_unlock_irq(&codec->voice_alloc);
1110         if (private_free)
1111                 private_free(private_data);
1112 }
1113
1114
1115 static void snd_ali_clear_voices(struct snd_ali * codec,
1116                           unsigned int v_min,
1117                           unsigned int v_max)
1118 {
1119         unsigned int i;
1120
1121         for (i = v_min; i <= v_max; i++) {
1122                 snd_ali_stop_voice(codec, i);
1123                 snd_ali_disable_voice_irq(codec, i);
1124         }
1125 }
1126
1127 static void snd_ali_write_voice_regs(struct snd_ali * codec,
1128                          unsigned int Channel,
1129                          unsigned int LBA,
1130                          unsigned int CSO,
1131                          unsigned int ESO,
1132                          unsigned int DELTA,
1133                          unsigned int ALPHA_FMS,
1134                          unsigned int GVSEL,
1135                          unsigned int PAN,
1136                          unsigned int VOL,
1137                          unsigned int CTRL,
1138                          unsigned int EC)
1139 {
1140         unsigned int ctlcmds[4];
1141         
1142         outb((unsigned char)(Channel & 0x001f),ALI_REG(codec,ALI_GC_CIR));
1143
1144         ctlcmds[0] =  (CSO << 16) | (ALPHA_FMS & 0x0000ffff);
1145         ctlcmds[1] =  LBA;
1146         ctlcmds[2] =  (ESO << 16) | (DELTA & 0x0ffff);
1147         ctlcmds[3] =  (GVSEL << 31) |
1148                       ((PAN & 0x0000007f) << 24) |
1149                       ((VOL & 0x000000ff) << 16) |
1150                       ((CTRL & 0x0000000f) << 12) |
1151                       (EC & 0x00000fff);
1152
1153         outb(Channel, ALI_REG(codec, ALI_GC_CIR));
1154
1155         outl(ctlcmds[0], ALI_REG(codec,ALI_CSO_ALPHA_FMS));
1156         outl(ctlcmds[1], ALI_REG(codec,ALI_LBA));
1157         outl(ctlcmds[2], ALI_REG(codec,ALI_ESO_DELTA));
1158         outl(ctlcmds[3], ALI_REG(codec,ALI_GVSEL_PAN_VOC_CTRL_EC));
1159
1160         outl(0x30000000, ALI_REG(codec, ALI_EBUF1));    /* Still Mode */
1161         outl(0x30000000, ALI_REG(codec, ALI_EBUF2));    /* Still Mode */
1162 }
1163
1164 static unsigned int snd_ali_convert_rate(unsigned int rate, int rec)
1165 {
1166         unsigned int delta;
1167
1168         if (rate < 4000)  rate = 4000;
1169         if (rate > 48000) rate = 48000;
1170
1171         if (rec) {
1172                 if (rate == 44100)
1173                         delta = 0x116a;
1174                 else if (rate == 8000)
1175                         delta = 0x6000;
1176                 else if (rate == 48000)
1177                         delta = 0x1000;
1178                 else
1179                         delta = ((48000 << 12) / rate) & 0x0000ffff;
1180         } else {
1181                 if (rate == 44100)
1182                         delta = 0xeb3;
1183                 else if (rate == 8000)
1184                         delta = 0x2ab;
1185                 else if (rate == 48000)
1186                         delta = 0x1000;
1187                 else 
1188                         delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
1189         }
1190
1191         return delta;
1192 }
1193
1194 static unsigned int snd_ali_control_mode(struct snd_pcm_substream *substream)
1195 {
1196         unsigned int CTRL;
1197         struct snd_pcm_runtime *runtime = substream->runtime;
1198
1199         /* set ctrl mode
1200            CTRL default: 8-bit (unsigned) mono, loop mode enabled
1201          */
1202         CTRL = 0x00000001;
1203         if (snd_pcm_format_width(runtime->format) == 16)
1204                 CTRL |= 0x00000008;     // 16-bit data
1205         if (!snd_pcm_format_unsigned(runtime->format))
1206                 CTRL |= 0x00000002;     // signed data
1207         if (runtime->channels > 1)
1208                 CTRL |= 0x00000004;     // stereo data
1209         return CTRL;
1210 }
1211
1212 /*
1213  *  PCM part
1214  */
1215
1216 static int snd_ali_ioctl(struct snd_pcm_substream *substream,
1217                                   unsigned int cmd, void *arg)
1218 {
1219         return snd_pcm_lib_ioctl(substream, cmd, arg);
1220 }
1221
1222 static int snd_ali_trigger(struct snd_pcm_substream *substream,
1223                                int cmd)
1224                                     
1225 {
1226         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1227         struct list_head *pos;
1228         struct snd_pcm_substream *s;
1229         unsigned int what, whati, capture_flag;
1230         struct snd_ali_voice *pvoice = NULL, *evoice = NULL;
1231         unsigned int val;
1232         int do_start;
1233
1234         switch (cmd) {
1235         case SNDRV_PCM_TRIGGER_START:
1236         case SNDRV_PCM_TRIGGER_RESUME:
1237                 do_start = 1; break;
1238         case SNDRV_PCM_TRIGGER_STOP:
1239         case SNDRV_PCM_TRIGGER_SUSPEND:
1240                 do_start = 0; break;
1241         default:
1242                 return -EINVAL;
1243         }
1244
1245         what = whati = capture_flag = 0;
1246         snd_pcm_group_for_each(pos, substream) {
1247                 s = snd_pcm_group_substream_entry(pos);
1248                 if ((struct snd_ali *) snd_pcm_substream_chip(s) == codec) {
1249                         pvoice = s->runtime->private_data;
1250                         evoice = pvoice->extra;
1251                         what |= 1 << (pvoice->number & 0x1f);
1252                         if (evoice == NULL) {
1253                                 whati |= 1 << (pvoice->number & 0x1f);
1254                         } else {
1255                                 whati |= 1 << (evoice->number & 0x1f);
1256                                 what |= 1 << (evoice->number & 0x1f);
1257                         }
1258                         if (do_start) {
1259                                 pvoice->running = 1;
1260                                 if (evoice != NULL)
1261                                         evoice->running = 1;
1262                         } else {
1263                                 pvoice->running = 0;
1264                                 if (evoice != NULL)
1265                                         evoice->running = 0;
1266                         }
1267                         snd_pcm_trigger_done(s, substream);
1268                         if (pvoice->mode)
1269                                 capture_flag = 1;
1270                 }
1271         }
1272         spin_lock(&codec->reg_lock);
1273         if (! do_start) {
1274                 outl(what, ALI_REG(codec, ALI_STOP));
1275         }
1276         val = inl(ALI_REG(codec, ALI_AINTEN));
1277         if (do_start) {
1278                 val |= whati;
1279         } else {
1280                 val &= ~whati;
1281         }
1282         outl(val, ALI_REG(codec, ALI_AINTEN));
1283         if (do_start) {
1284                 outl(what, ALI_REG(codec, ALI_START));
1285         }
1286         snd_ali_printk("trigger: what=%xh whati=%xh\n",what,whati);
1287         spin_unlock(&codec->reg_lock);
1288
1289         return 0;
1290 }
1291
1292 static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
1293                                  struct snd_pcm_hw_params *hw_params)
1294 {
1295         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1296         struct snd_pcm_runtime *runtime = substream->runtime;
1297         struct snd_ali_voice *pvoice = runtime->private_data;
1298         struct snd_ali_voice *evoice = pvoice->extra;
1299         int err;
1300         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
1301         if (err < 0) return err;
1302         
1303         /* voice management */
1304
1305         if (params_buffer_size(hw_params)/2 != params_period_size(hw_params)) {
1306                 if (evoice == NULL) {
1307                         evoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, 0, -1);
1308                         if (evoice == NULL)
1309                                 return -ENOMEM;
1310                         pvoice->extra = evoice;
1311                         evoice->substream = substream;
1312                 }
1313         } else {
1314                 if (evoice != NULL) {
1315                         snd_ali_free_voice(codec, evoice);
1316                         pvoice->extra = evoice = NULL;
1317                 }
1318         }
1319
1320         return 0;
1321 }
1322
1323 static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
1324 {
1325         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1326         struct snd_pcm_runtime *runtime = substream->runtime;
1327         struct snd_ali_voice *pvoice = runtime->private_data;
1328         struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
1329
1330         snd_pcm_lib_free_pages(substream);
1331         if (evoice != NULL) {
1332                 snd_ali_free_voice(codec, evoice);
1333                 pvoice->extra = NULL;
1334         }
1335         return 0;
1336 }
1337
1338 static int snd_ali_hw_params(struct snd_pcm_substream *substream,
1339                                  struct snd_pcm_hw_params *hw_params)
1340 {
1341         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
1342 }
1343
1344 static int snd_ali_hw_free(struct snd_pcm_substream *substream)
1345 {
1346         return snd_pcm_lib_free_pages(substream);
1347 }
1348
1349 static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
1350 {
1351         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1352         struct snd_pcm_runtime *runtime = substream->runtime;
1353         struct snd_ali_voice *pvoice = runtime->private_data;
1354         struct snd_ali_voice *evoice = pvoice->extra;
1355
1356         unsigned int LBA;
1357         unsigned int Delta;
1358         unsigned int ESO;
1359         unsigned int CTRL;
1360         unsigned int GVSEL;
1361         unsigned int PAN;
1362         unsigned int VOL;
1363         unsigned int EC;
1364         
1365         snd_ali_printk("playback_prepare ...\n");
1366
1367         spin_lock_irq(&codec->reg_lock);        
1368         
1369         /* set Delta (rate) value */
1370         Delta = snd_ali_convert_rate(runtime->rate, 0);
1371
1372         if ((pvoice->number == ALI_SPDIF_IN_CHANNEL) || 
1373             (pvoice->number == ALI_PCM_IN_CHANNEL))
1374                 snd_ali_disable_special_channel(codec, pvoice->number);
1375         else if (codec->spdif_support &&
1376                  (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) & ALI_SPDIF_OUT_CH_ENABLE)
1377                  && (pvoice->number == ALI_SPDIF_OUT_CHANNEL)) {
1378                 snd_ali_set_spdif_out_rate(codec, runtime->rate);
1379                 Delta = 0x1000;
1380         }
1381         
1382         /* set Loop Back Address */
1383         LBA = runtime->dma_addr;
1384
1385         /* set interrupt count size */
1386         pvoice->count = runtime->period_size;
1387
1388         /* set target ESO for channel */
1389         pvoice->eso = runtime->buffer_size; 
1390
1391         snd_ali_printk("playback_prepare: eso=%xh count=%xh\n",pvoice->eso,pvoice->count);
1392
1393         /* set ESO to capture first MIDLP interrupt */
1394         ESO = pvoice->eso -1;
1395         /* set ctrl mode */
1396         CTRL = snd_ali_control_mode(substream);
1397
1398         GVSEL = 1;
1399         PAN = 0;
1400         VOL = 0;
1401         EC = 0;
1402         snd_ali_printk("playback_prepare:\n    ch=%d, Rate=%d Delta=%xh,GVSEL=%xh,PAN=%xh,CTRL=%xh\n",pvoice->number,runtime->rate,Delta,GVSEL,PAN,CTRL);
1403         snd_ali_write_voice_regs(    codec,
1404                                      pvoice->number,
1405                                      LBA,
1406                                      0, /* cso */
1407                                      ESO,
1408                                      Delta,
1409                                      0, /* alpha */
1410                                      GVSEL,
1411                                      PAN,
1412                                      VOL,
1413                                      CTRL,
1414                                      EC);
1415         if (evoice != NULL) {
1416                 evoice->count = pvoice->count;
1417                 evoice->eso = pvoice->count << 1;
1418                 ESO = evoice->eso - 1;
1419                 snd_ali_write_voice_regs(codec,
1420                                      evoice->number,
1421                                      LBA,
1422                                      0, /* cso */
1423                                      ESO,
1424                                      Delta,
1425                                      0, /* alpha */
1426                                      GVSEL,
1427                                      (unsigned int)0x7f,
1428                                      (unsigned int)0x3ff,
1429                                      CTRL,
1430                                      EC);
1431         }
1432         spin_unlock_irq(&codec->reg_lock);
1433         return 0;
1434 }
1435
1436
1437 static int snd_ali_prepare(struct snd_pcm_substream *substream)
1438 {
1439         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1440         struct snd_pcm_runtime *runtime = substream->runtime;
1441         struct snd_ali_voice *pvoice = runtime->private_data;
1442         unsigned int LBA;
1443         unsigned int Delta;
1444         unsigned int ESO;
1445         unsigned int CTRL;
1446         unsigned int GVSEL;
1447         unsigned int PAN;
1448         unsigned int VOL;
1449         unsigned int EC;
1450         u8       bValue;
1451
1452         spin_lock_irq(&codec->reg_lock);
1453
1454         snd_ali_printk("ali_prepare...\n");
1455
1456         snd_ali_enable_special_channel(codec,pvoice->number);
1457
1458         Delta = (pvoice->number == ALI_MODEM_IN_CHANNEL ||
1459                  pvoice->number == ALI_MODEM_OUT_CHANNEL) ? 
1460                 0x1000 : snd_ali_convert_rate(runtime->rate, pvoice->mode);
1461
1462         // Prepare capture intr channel
1463         if (pvoice->number == ALI_SPDIF_IN_CHANNEL) {
1464
1465                 unsigned int rate;
1466                 
1467                 spin_unlock_irq(&codec->reg_lock);
1468                 if (codec->revision != ALI_5451_V02)
1469                         return -1;
1470
1471                 rate = snd_ali_get_spdif_in_rate(codec);
1472                 if (rate == 0) {
1473                         snd_printk(KERN_WARNING "ali_capture_preapre: spdif rate detect err!\n");
1474                         rate = 48000;
1475                 }
1476                 spin_lock_irq(&codec->reg_lock);
1477                 bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
1478                 if (bValue & 0x10) {
1479                         outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
1480                         printk(KERN_WARNING "clear SPDIF parity error flag.\n");
1481                 }
1482
1483                 if (rate != 48000)
1484                         Delta = ((rate << 12)/runtime->rate)&0x00ffff;
1485         }
1486
1487         // set target ESO for channel 
1488         pvoice->eso = runtime->buffer_size; 
1489
1490         // set interrupt count size 
1491         pvoice->count = runtime->period_size;
1492
1493         // set Loop Back Address 
1494         LBA = runtime->dma_addr;
1495
1496         // set ESO to capture first MIDLP interrupt 
1497         ESO = pvoice->eso - 1;
1498         CTRL = snd_ali_control_mode(substream);
1499         GVSEL = 0;
1500         PAN = 0x00;
1501         VOL = 0x00;
1502         EC = 0;
1503
1504         snd_ali_write_voice_regs(    codec,
1505                                      pvoice->number,
1506                                      LBA,
1507                                      0, /* cso */
1508                                      ESO,
1509                                      Delta,
1510                                      0, /* alpha */
1511                                      GVSEL,
1512                                      PAN,
1513                                      VOL,
1514                                      CTRL,
1515                                      EC);
1516
1517
1518         spin_unlock_irq(&codec->reg_lock);
1519
1520         return 0;
1521 }
1522
1523
1524 static snd_pcm_uframes_t snd_ali_playback_pointer(struct snd_pcm_substream *substream)
1525 {
1526         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1527         struct snd_pcm_runtime *runtime = substream->runtime;
1528         struct snd_ali_voice *pvoice = runtime->private_data;
1529         unsigned int cso;
1530
1531         spin_lock(&codec->reg_lock);
1532         if (!pvoice->running) {
1533                 spin_unlock(&codec->reg_lock);
1534                 return 0;
1535         }
1536         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1537         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1538         spin_unlock(&codec->reg_lock);
1539         snd_ali_printk("playback pointer returned cso=%xh.\n", cso);
1540
1541         return cso;
1542 }
1543
1544
1545 static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1546 {
1547         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1548         struct snd_pcm_runtime *runtime = substream->runtime;
1549         struct snd_ali_voice *pvoice = runtime->private_data;
1550         unsigned int cso;
1551
1552         spin_lock(&codec->reg_lock);
1553         if (!pvoice->running) {
1554                 spin_unlock_irq(&codec->reg_lock);
1555                 return 0;
1556         }
1557         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1558         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1559         spin_unlock(&codec->reg_lock);
1560
1561         return cso;
1562 }
1563
1564 static struct snd_pcm_hardware snd_ali_playback =
1565 {
1566         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1567                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1568                                  SNDRV_PCM_INFO_MMAP_VALID |
1569                                  SNDRV_PCM_INFO_RESUME |
1570                                  SNDRV_PCM_INFO_SYNC_START),
1571         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1572                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1573         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1574         .rate_min =             4000,
1575         .rate_max =             48000,
1576         .channels_min =         1,
1577         .channels_max =         2,
1578         .buffer_bytes_max =     (256*1024),
1579         .period_bytes_min =     64,
1580         .period_bytes_max =     (256*1024),
1581         .periods_min =          1,
1582         .periods_max =          1024,
1583         .fifo_size =            0,
1584 };
1585
1586 /*
1587  *  Capture support device description
1588  */
1589
1590 static struct snd_pcm_hardware snd_ali_capture =
1591 {
1592         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1593                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1594                                  SNDRV_PCM_INFO_MMAP_VALID |
1595                                  SNDRV_PCM_INFO_RESUME |
1596                                  SNDRV_PCM_INFO_SYNC_START),
1597         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1598                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1599         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1600         .rate_min =             4000,
1601         .rate_max =             48000,
1602         .channels_min =         1,
1603         .channels_max =         2,
1604         .buffer_bytes_max =     (128*1024),
1605         .period_bytes_min =     64,
1606         .period_bytes_max =     (128*1024),
1607         .periods_min =          1,
1608         .periods_max =          1024,
1609         .fifo_size =            0,
1610 };
1611
1612 static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1613 {
1614         struct snd_ali_voice *pvoice = runtime->private_data;
1615         struct snd_ali *codec;
1616
1617         if (pvoice) {
1618                 codec = pvoice->codec;
1619                 snd_ali_free_voice(pvoice->codec, pvoice);
1620         }
1621 }
1622
1623 static int snd_ali_open(struct snd_pcm_substream *substream, int rec, int channel,
1624                 struct snd_pcm_hardware *phw)
1625 {
1626         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1627         struct snd_pcm_runtime *runtime = substream->runtime;
1628         struct snd_ali_voice *pvoice;
1629
1630         pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec, channel);
1631         if (pvoice == NULL)
1632                 return -EAGAIN;
1633
1634         pvoice->substream = substream;
1635         runtime->private_data = pvoice;
1636         runtime->private_free = snd_ali_pcm_free_substream;
1637
1638         runtime->hw = *phw;
1639         snd_pcm_set_sync(substream);
1640         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1641         return 0;
1642 }
1643
1644 static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1645 {
1646         return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1647 }
1648
1649 static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1650 {
1651         return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1652 }
1653
1654 static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1655 {
1656         return 0;
1657 }
1658
1659 static int snd_ali_close(struct snd_pcm_substream *substream)
1660 {
1661         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1662         struct snd_ali_voice *pvoice = substream->runtime->private_data;
1663
1664         snd_ali_disable_special_channel(codec,pvoice->number);
1665
1666         return 0;
1667 }
1668
1669 static struct snd_pcm_ops snd_ali_playback_ops = {
1670         .open =         snd_ali_playback_open,
1671         .close =        snd_ali_playback_close,
1672         .ioctl =        snd_ali_ioctl,
1673         .hw_params =    snd_ali_playback_hw_params,
1674         .hw_free =      snd_ali_playback_hw_free,
1675         .prepare =      snd_ali_playback_prepare,
1676         .trigger =      snd_ali_trigger,
1677         .pointer =      snd_ali_playback_pointer,
1678 };
1679
1680 static struct snd_pcm_ops snd_ali_capture_ops = {
1681         .open =         snd_ali_capture_open,
1682         .close =        snd_ali_close,
1683         .ioctl =        snd_ali_ioctl,
1684         .hw_params =    snd_ali_hw_params,
1685         .hw_free =      snd_ali_hw_free,
1686         .prepare =      snd_ali_prepare,
1687         .trigger =      snd_ali_trigger,
1688         .pointer =      snd_ali_pointer,
1689 };
1690
1691 /*
1692  * Modem PCM
1693  */
1694
1695 static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1696                                  struct snd_pcm_hw_params *hw_params)
1697 {
1698         struct snd_ali *chip = snd_pcm_substream_chip(substream);
1699         unsigned int modem_num = chip->num_of_codecs - 1;
1700         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE, params_rate(hw_params));
1701         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1702         return snd_ali_hw_params(substream, hw_params);
1703 }
1704
1705 static struct snd_pcm_hardware snd_ali_modem =
1706 {
1707         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1708                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1709                                  SNDRV_PCM_INFO_MMAP_VALID |
1710                                  SNDRV_PCM_INFO_RESUME |
1711                                  SNDRV_PCM_INFO_SYNC_START),
1712         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
1713         .rates =                SNDRV_PCM_RATE_KNOT|SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000,
1714         .rate_min =             8000,
1715         .rate_max =             16000,
1716         .channels_min =         1,
1717         .channels_max =         1,
1718         .buffer_bytes_max =     (256*1024),
1719         .period_bytes_min =     64,
1720         .period_bytes_max =     (256*1024),
1721         .periods_min =          1,
1722         .periods_max =          1024,
1723         .fifo_size =            0,
1724 };
1725
1726 static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec, int channel)
1727 {
1728         static unsigned int rates [] = {8000,9600,12000,16000};
1729         static struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1730                 .count = ARRAY_SIZE(rates),
1731                 .list = rates,
1732                 .mask = 0,
1733         };
1734         int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1735         if (err)
1736                 return err;
1737         return snd_pcm_hw_constraint_list(substream->runtime, 0,
1738                         SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1739 }
1740
1741 static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1742 {
1743         return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1744 }
1745
1746 static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1747 {
1748         return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1749 }
1750
1751 static struct snd_pcm_ops snd_ali_modem_playback_ops = {
1752         .open =         snd_ali_modem_playback_open,
1753         .close =        snd_ali_close,
1754         .ioctl =        snd_pcm_lib_ioctl,
1755         .hw_params =    snd_ali_modem_hw_params,
1756         .hw_free =      snd_ali_hw_free,
1757         .prepare =      snd_ali_prepare,
1758         .trigger =      snd_ali_trigger,
1759         .pointer =      snd_ali_pointer,
1760 };
1761
1762 static struct snd_pcm_ops snd_ali_modem_capture_ops = {
1763         .open =         snd_ali_modem_capture_open,
1764         .close =        snd_ali_close,
1765         .ioctl =        snd_pcm_lib_ioctl,
1766         .hw_params =    snd_ali_modem_hw_params,
1767         .hw_free =      snd_ali_hw_free,
1768         .prepare =      snd_ali_prepare,
1769         .trigger =      snd_ali_trigger,
1770         .pointer =      snd_ali_pointer,
1771 };
1772
1773
1774 struct ali_pcm_description {
1775         char *name;
1776         unsigned int playback_num;
1777         unsigned int capture_num;
1778         struct snd_pcm_ops *playback_ops;
1779         struct snd_pcm_ops *capture_ops;
1780         unsigned short class;
1781 };
1782
1783
1784 static void snd_ali_pcm_free(struct snd_pcm *pcm)
1785 {
1786         struct snd_ali *codec = pcm->private_data;
1787         codec->pcm[pcm->device] = NULL;
1788 }
1789
1790
1791 static int __devinit snd_ali_pcm(struct snd_ali * codec, int device, struct ali_pcm_description *desc)
1792 {
1793         struct snd_pcm *pcm;
1794         int err;
1795
1796         err = snd_pcm_new(codec->card, desc->name, device,
1797                           desc->playback_num, desc->capture_num, &pcm);
1798         if (err < 0) {
1799                 snd_printk(KERN_ERR "snd_ali_pcm: err called snd_pcm_new.\n");
1800                 return err;
1801         }
1802         pcm->private_data = codec;
1803         pcm->private_free = snd_ali_pcm_free;
1804         if (desc->playback_ops)
1805                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, desc->playback_ops);
1806         if (desc->capture_ops)
1807                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, desc->capture_ops);
1808
1809         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1810                                               snd_dma_pci_data(codec->pci), 64*1024, 128*1024);
1811
1812         pcm->info_flags = 0;
1813         pcm->dev_class = desc->class;
1814         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1815         strcpy(pcm->name, desc->name);
1816         codec->pcm[0] = pcm;
1817         return 0;
1818 }
1819
1820 static struct ali_pcm_description ali_pcms[] = {
1821         { "ALI 5451", ALI_CHANNELS, 1, &snd_ali_playback_ops, &snd_ali_capture_ops },
1822         { "ALI 5451 modem", 1, 1, &snd_ali_modem_playback_ops, &snd_ali_modem_capture_ops, SNDRV_PCM_CLASS_MODEM }
1823 };
1824
1825 static int __devinit snd_ali_build_pcms(struct snd_ali *codec)
1826 {
1827         int i, err;
1828         for(i = 0 ; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms) ; i++)
1829                 if((err = snd_ali_pcm(codec, i, &ali_pcms[i])) < 0)
1830                         return err;
1831         return 0;
1832 }
1833
1834
1835 #define ALI5451_SPDIF(xname, xindex, value) \
1836 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1837 .info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1838 .put = snd_ali5451_spdif_put, .private_value = value}
1839
1840 static int snd_ali5451_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1841 {
1842         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1843         uinfo->count = 1;
1844         uinfo->value.integer.min = 0;
1845         uinfo->value.integer.max = 1;
1846         return 0;
1847 }
1848
1849 static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1850 {
1851         struct snd_ali *codec = kcontrol->private_data;
1852         unsigned int enable;
1853
1854         enable = ucontrol->value.integer.value[0] ? 1 : 0;
1855
1856         spin_lock_irq(&codec->reg_lock);
1857         switch(kcontrol->private_value) {
1858         case 0:
1859                 enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1860                 break;
1861         case 1:
1862                 enable = ((codec->spdif_mask & 0x02) && (codec->spdif_mask & 0x04)) ? 1 : 0;
1863                 break;
1864         case 2:
1865                 enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1866                 break;
1867         default:
1868                 break;
1869         }
1870         ucontrol->value.integer.value[0] = enable;
1871         spin_unlock_irq(&codec->reg_lock);
1872         return 0;
1873 }
1874
1875 static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1876 {
1877         struct snd_ali *codec = kcontrol->private_data;
1878         unsigned int change = 0, enable = 0;
1879
1880         enable = ucontrol->value.integer.value[0] ? 1 : 0;
1881
1882         spin_lock_irq(&codec->reg_lock);
1883         switch (kcontrol->private_value) {
1884         case 0:
1885                 change = (codec->spdif_mask & 0x02) ? 1 : 0;
1886                 change = change ^ enable;
1887                 if (change) {
1888                         if (enable) {
1889                                 codec->spdif_mask |= 0x02;
1890                                 snd_ali_enable_spdif_out(codec);
1891                         } else {
1892                                 codec->spdif_mask &= ~(0x02);
1893                                 codec->spdif_mask &= ~(0x04);
1894                                 snd_ali_disable_spdif_out(codec);
1895                         }
1896                 }
1897                 break;
1898         case 1: 
1899                 change = (codec->spdif_mask & 0x04) ? 1 : 0;
1900                 change = change ^ enable;
1901                 if (change && (codec->spdif_mask & 0x02)) {
1902                         if (enable) {
1903                                 codec->spdif_mask |= 0x04;
1904                                 snd_ali_enable_spdif_chnout(codec);
1905                         } else {
1906                                 codec->spdif_mask &= ~(0x04);
1907                                 snd_ali_disable_spdif_chnout(codec);
1908                         }
1909                 }
1910                 break;
1911         case 2:
1912                 change = (codec->spdif_mask & 0x01) ? 1 : 0;
1913                 change = change ^ enable;
1914                 if (change) {
1915                         if (enable) {
1916                                 codec->spdif_mask |= 0x01;
1917                                 snd_ali_enable_spdif_in(codec);
1918                         } else {
1919                                 codec->spdif_mask &= ~(0x01);
1920                                 snd_ali_disable_spdif_in(codec);
1921                         }
1922                 }
1923                 break;
1924         default:
1925                 break;
1926         }
1927         spin_unlock_irq(&codec->reg_lock);
1928         
1929         return change;
1930 }
1931
1932 static struct snd_kcontrol_new snd_ali5451_mixer_spdif[] __devinitdata = {
1933         /* spdif aplayback switch */
1934         /* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1935         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1936         /* spdif out to spdif channel */
1937         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1938         /* spdif in from spdif channel */
1939         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1940 };
1941
1942 static void snd_ali_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1943 {
1944         struct snd_ali *codec = bus->private_data;
1945         codec->ac97_bus = NULL;
1946 }
1947
1948 static void snd_ali_mixer_free_ac97(struct snd_ac97 *ac97)
1949 {
1950         struct snd_ali *codec = ac97->private_data;
1951         codec->ac97[ac97->num] = NULL;
1952 }
1953
1954 static int __devinit snd_ali_mixer(struct snd_ali * codec)
1955 {
1956         struct snd_ac97_template ac97;
1957         unsigned int idx;
1958         int i, err;
1959         static struct snd_ac97_bus_ops ops = {
1960                 .write = snd_ali_codec_write,
1961                 .read = snd_ali_codec_read,
1962         };
1963
1964         if ((err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus)) < 0)
1965                 return err;
1966         codec->ac97_bus->private_free = snd_ali_mixer_free_ac97_bus;
1967
1968         memset(&ac97, 0, sizeof(ac97));
1969         ac97.private_data = codec;
1970         ac97.private_free = snd_ali_mixer_free_ac97;
1971
1972         for ( i = 0 ; i < codec->num_of_codecs ; i++) {
1973                 ac97.num = i;
1974                 if ((err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i])) < 0) {
1975                         snd_printk(KERN_ERR "ali mixer %d creating error.\n", i);
1976                         if(i == 0)
1977                                 return err;
1978                         codec->num_of_codecs = 1;
1979                         break;
1980                 }
1981         }
1982
1983         if (codec->spdif_support) {
1984                 for(idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1985                         err=snd_ctl_add(codec->card, snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1986                         if (err < 0) return err;
1987                 }
1988         }
1989         return 0;
1990 }
1991
1992 #ifdef CONFIG_PM
1993 static int ali_suspend(struct pci_dev *pci, pm_message_t state)
1994 {
1995         struct snd_card *card = pci_get_drvdata(pci);
1996         struct snd_ali *chip = card->private_data;
1997         struct snd_ali_image *im;
1998         int i, j;
1999
2000         im = chip->image;
2001         if (! im)
2002                 return 0;
2003
2004         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2005         for(i = 0 ; i < chip->num_of_codecs ; i++) {
2006                 snd_pcm_suspend_all(chip->pcm[i]);
2007                 snd_ac97_suspend(chip->ac97[i]);
2008         }
2009
2010         spin_lock_irq(&chip->reg_lock);
2011         
2012         im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
2013         // im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START));
2014         im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
2015         
2016         // disable all IRQ bits
2017         outl(0, ALI_REG(chip, ALI_MISCINT));
2018         
2019         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
2020                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
2021                         continue;
2022                 im->regs[i] = inl(ALI_REG(chip, i*4));
2023         }
2024         
2025         for (i = 0; i < ALI_CHANNELS; i++) {
2026                 outb(i, ALI_REG(chip, ALI_GC_CIR));
2027                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
2028                         im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
2029         }
2030
2031         // stop all HW channel
2032         outl(0xffffffff, ALI_REG(chip, ALI_STOP));
2033
2034         spin_unlock_irq(&chip->reg_lock);
2035
2036         pci_disable_device(pci);
2037         pci_save_state(pci);
2038         pci_set_power_state(pci, pci_choose_state(pci, state));
2039         return 0;
2040 }
2041
2042 static int ali_resume(struct pci_dev *pci)
2043 {
2044         struct snd_card *card = pci_get_drvdata(pci);
2045         struct snd_ali *chip = card->private_data;
2046         struct snd_ali_image *im;
2047         int i, j;
2048
2049         im = chip->image;
2050         if (! im)
2051                 return 0;
2052
2053         pci_set_power_state(pci, PCI_D0);
2054         pci_restore_state(pci);
2055         if (pci_enable_device(pci) < 0) {
2056                 printk(KERN_ERR "ali5451: pci_enable_device failed, "
2057                        "disabling device\n");
2058                 snd_card_disconnect(card);
2059                 return -EIO;
2060         }
2061         pci_set_master(pci);
2062
2063         spin_lock_irq(&chip->reg_lock);
2064         
2065         for (i = 0; i < ALI_CHANNELS; i++) {
2066                 outb(i, ALI_REG(chip, ALI_GC_CIR));
2067                 for (j = 0; j < ALI_CHANNEL_REGS; j++) 
2068                         outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
2069         }
2070         
2071         for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
2072                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) || (i*4 == ALI_START))
2073                         continue;
2074                 outl(im->regs[i], ALI_REG(chip, i*4));
2075         }
2076         
2077         // start HW channel
2078         outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
2079         // restore IRQ enable bits
2080         outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
2081         
2082         spin_unlock_irq(&chip->reg_lock);
2083
2084         for(i = 0 ; i < chip->num_of_codecs ; i++)
2085                 snd_ac97_resume(chip->ac97[i]);
2086         
2087         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2088         return 0;
2089 }
2090 #endif /* CONFIG_PM */
2091
2092 static int snd_ali_free(struct snd_ali * codec)
2093 {
2094         if (codec->hw_initialized)
2095                 snd_ali_disable_address_interrupt(codec);
2096         if (codec->irq >= 0) {
2097                 synchronize_irq(codec->irq);
2098                 free_irq(codec->irq, (void *)codec);
2099         }
2100         if (codec->port)
2101                 pci_release_regions(codec->pci);
2102         pci_disable_device(codec->pci);
2103 #ifdef CONFIG_PM
2104         kfree(codec->image);
2105 #endif
2106         pci_dev_put(codec->pci_m1533);
2107         pci_dev_put(codec->pci_m7101);
2108         kfree(codec);
2109         return 0;
2110 }
2111
2112 static int snd_ali_chip_init(struct snd_ali *codec)
2113 {
2114         unsigned int legacy;
2115         unsigned char temp;
2116         struct pci_dev *pci_dev = NULL;
2117
2118         snd_ali_printk("chip initializing ... \n");
2119
2120         if (snd_ali_reset_5451(codec)) {
2121                 snd_printk(KERN_ERR "ali_chip_init: reset 5451 error.\n");
2122                 return -1;
2123         }
2124
2125         if (codec->revision == ALI_5451_V02) {
2126                 pci_dev = codec->pci_m1533;
2127                 pci_read_config_byte(pci_dev, 0x59, &temp);
2128                 temp |= 0x80;
2129                 pci_write_config_byte(pci_dev, 0x59, temp);
2130         
2131                 pci_dev = codec->pci_m7101;
2132                 pci_read_config_byte(pci_dev, 0xb8, &temp);
2133                 temp |= 0x20;
2134                 pci_write_config_byte(pci_dev, 0xB8, temp);
2135         }
2136
2137         pci_read_config_dword(codec->pci, 0x44, &legacy);
2138         legacy &= 0xff00ff00;
2139         legacy |= 0x000800aa;
2140         pci_write_config_dword(codec->pci, 0x44, legacy);
2141
2142         outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
2143         outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
2144         outl(0xffffffff, ALI_REG(codec, ALI_AINT));
2145         outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
2146         outb(0x10,       ALI_REG(codec, ALI_MPUR2));
2147
2148         codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
2149         codec->ac97_ext_status = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_STATUS);
2150         if (codec->spdif_support) {
2151                 snd_ali_enable_spdif_out(codec);
2152                 codec->spdif_mask = 0x00000002;
2153         }
2154
2155         codec->num_of_codecs = 1;
2156
2157         /* secondary codec - modem */
2158         if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
2159                 codec->num_of_codecs++;
2160                 outl(inl(ALI_REG(codec, ALI_SCTRL)) |
2161                         (ALI_SCTRL_LINE_IN2|ALI_SCTRL_GPIO_IN2|ALI_SCTRL_LINE_OUT_EN),
2162                         ALI_REG(codec, ALI_SCTRL));
2163         }
2164
2165         snd_ali_printk("chip initialize succeed.\n");
2166         return 0;
2167
2168 }
2169
2170 /* proc for register dump */
2171 static void snd_ali_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buf)
2172 {
2173         struct snd_ali *codec = entry->private_data;
2174         int i;
2175         for(i = 0 ; i < 256 ; i+= 4)
2176                 snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2177 }
2178
2179 static void __devinit snd_ali_proc_init(struct snd_ali *codec)
2180 {
2181         struct snd_info_entry *entry;
2182         if(!snd_card_proc_new(codec->card, "ali5451", &entry))
2183                 snd_info_set_text_ops(entry, codec, snd_ali_proc_read);
2184 }
2185
2186 static int __devinit snd_ali_resources(struct snd_ali *codec)
2187 {
2188         int err;
2189
2190         snd_ali_printk("resouces allocation ...\n");
2191         if ((err = pci_request_regions(codec->pci, "ALI 5451")) < 0)
2192                 return err;
2193         codec->port = pci_resource_start(codec->pci, 0);
2194
2195         if (request_irq(codec->pci->irq, snd_ali_card_interrupt, IRQF_DISABLED|IRQF_SHARED, "ALI 5451", (void *)codec)) {
2196                 snd_printk(KERN_ERR "Unable to request irq.\n");
2197                 return -EBUSY;
2198         }
2199         codec->irq = codec->pci->irq;
2200         snd_ali_printk("resouces allocated.\n");
2201         return 0;
2202 }
2203 static int snd_ali_dev_free(struct snd_device *device) 
2204 {
2205         struct snd_ali *codec=device->device_data;
2206         snd_ali_free(codec);
2207         return 0;
2208 }
2209
2210 static int __devinit snd_ali_create(struct snd_card *card,
2211                                     struct pci_dev *pci,
2212                                     int pcm_streams,
2213                                     int spdif_support,
2214                                     struct snd_ali ** r_ali)
2215 {
2216         struct snd_ali *codec;
2217         int i, err;
2218         unsigned short cmdw;
2219         static struct snd_device_ops ops = {
2220                 .dev_free = snd_ali_dev_free,
2221         };
2222
2223         *r_ali = NULL;
2224
2225         snd_ali_printk("creating ...\n");
2226
2227         /* enable PCI device */
2228         if ((err = pci_enable_device(pci)) < 0)
2229                 return err;
2230         /* check, if we can restrict PCI DMA transfers to 31 bits */
2231         if (pci_set_dma_mask(pci, DMA_31BIT_MASK) < 0 ||
2232             pci_set_consistent_dma_mask(pci, DMA_31BIT_MASK) < 0) {
2233                 snd_printk(KERN_ERR "architecture does not support 31bit PCI busmaster DMA\n");
2234                 pci_disable_device(pci);
2235                 return -ENXIO;
2236         }
2237
2238         if ((codec = kzalloc(sizeof(*codec), GFP_KERNEL)) == NULL) {
2239                 pci_disable_device(pci);
2240                 return -ENOMEM;
2241         }
2242
2243         spin_lock_init(&codec->reg_lock);
2244         spin_lock_init(&codec->voice_alloc);
2245
2246         codec->card = card;
2247         codec->pci = pci;
2248         codec->irq = -1;
2249         pci_read_config_byte(pci, PCI_REVISION_ID, &codec->revision);
2250         codec->spdif_support = spdif_support;
2251
2252         if (pcm_streams < 1)
2253                 pcm_streams = 1;
2254         if (pcm_streams > 32)
2255                 pcm_streams = 32;
2256         
2257         pci_set_master(pci);
2258         pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2259         if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2260                 cmdw |= PCI_COMMAND_IO;
2261                 pci_write_config_word(pci, PCI_COMMAND, cmdw);
2262         }
2263         pci_set_master(pci);
2264         
2265         if (snd_ali_resources(codec)) {
2266                 snd_ali_free(codec);
2267                 return -EBUSY;
2268         }
2269
2270         synchronize_irq(pci->irq);
2271
2272         codec->synth.chmap = 0;
2273         codec->synth.chcnt = 0;
2274         codec->spdif_mask = 0;
2275         codec->synth.synthcount = 0;
2276
2277         if (codec->revision == ALI_5451_V02)
2278                 codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2279         else
2280                 codec->chregs.regs.ac97read = ALI_AC97_READ;
2281         codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2282
2283         codec->chregs.regs.start  = ALI_START;
2284         codec->chregs.regs.stop   = ALI_STOP;
2285         codec->chregs.regs.aint   = ALI_AINT;
2286         codec->chregs.regs.ainten = ALI_AINTEN;
2287
2288         codec->chregs.data.start  = 0x00;
2289         codec->chregs.data.stop   = 0x00;
2290         codec->chregs.data.aint   = 0x00;
2291         codec->chregs.data.ainten = 0x00;
2292
2293         /* M1533: southbridge */
2294         codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2295         if (! codec->pci_m1533) {
2296                 snd_printk(KERN_ERR "ali5451: cannot find ALi 1533 chip.\n");
2297                 snd_ali_free(codec);
2298                 return -ENODEV;
2299         }
2300         /* M7101: power management */
2301         codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2302         if (! codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2303                 snd_printk(KERN_ERR "ali5451: cannot find ALi 7101 chip.\n");
2304                 snd_ali_free(codec);
2305                 return -ENODEV;
2306         }
2307
2308         snd_ali_printk("snd_device_new is called.\n");
2309         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops)) < 0) {
2310                 snd_ali_free(codec);
2311                 return err;
2312         }
2313
2314         /* initialise synth voices*/
2315         for (i = 0; i < ALI_CHANNELS; i++ ) {
2316                 codec->synth.voices[i].number = i;
2317         }
2318
2319         if ((err = snd_ali_chip_init(codec)) < 0) {
2320                 snd_printk(KERN_ERR "ali create: chip init error.\n");
2321                 return err;
2322         }
2323
2324 #ifdef CONFIG_PM
2325         codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2326         if (! codec->image)
2327                 snd_printk(KERN_WARNING "can't allocate apm buffer\n");
2328 #endif
2329
2330         snd_ali_enable_address_interrupt(codec);
2331         codec->hw_initialized = 1;
2332
2333         *r_ali = codec;
2334         snd_ali_printk("created.\n");
2335         return 0;
2336 }
2337
2338 static int __devinit snd_ali_probe(struct pci_dev *pci,
2339                                    const struct pci_device_id *pci_id)
2340 {
2341         struct snd_card *card;
2342         struct snd_ali *codec;
2343         int err;
2344
2345         snd_ali_printk("probe ...\n");
2346
2347         card = snd_card_new(index, id, THIS_MODULE, 0);
2348         if (card == NULL)
2349                 return -ENOMEM;
2350
2351         if ((err = snd_ali_create(card, pci, pcm_channels, spdif, &codec)) < 0) {
2352                 snd_card_free(card);
2353                 return err;
2354         }
2355         card->private_data = codec;
2356
2357         snd_ali_printk("mixer building ...\n");
2358         if ((err = snd_ali_mixer(codec)) < 0) {
2359                 snd_card_free(card);
2360                 return err;
2361         }
2362         
2363         snd_ali_printk("pcm building ...\n");
2364         if ((err = snd_ali_build_pcms(codec)) < 0) {
2365                 snd_card_free(card);
2366                 return err;
2367         }
2368
2369         snd_ali_proc_init(codec);
2370
2371         strcpy(card->driver, "ALI5451");
2372         strcpy(card->shortname, "ALI 5451");
2373         
2374         sprintf(card->longname, "%s at 0x%lx, irq %li",
2375                 card->shortname, codec->port, codec->irq);
2376
2377         snd_ali_printk("register card.\n");
2378         if ((err = snd_card_register(card)) < 0) {
2379                 snd_card_free(card);
2380                 return err;
2381         }
2382         pci_set_drvdata(pci, card);
2383         return 0;
2384 }
2385
2386 static void __devexit snd_ali_remove(struct pci_dev *pci)
2387 {
2388         snd_card_free(pci_get_drvdata(pci));
2389         pci_set_drvdata(pci, NULL);
2390 }
2391
2392 static struct pci_driver driver = {
2393         .name = "ALI 5451",
2394         .id_table = snd_ali_ids,
2395         .probe = snd_ali_probe,
2396         .remove = __devexit_p(snd_ali_remove),
2397 #ifdef CONFIG_PM
2398         .suspend = ali_suspend,
2399         .resume = ali_resume,
2400 #endif
2401 };                                
2402
2403 static int __init alsa_card_ali_init(void)
2404 {
2405         return pci_register_driver(&driver);
2406 }
2407
2408 static void __exit alsa_card_ali_exit(void)
2409 {
2410         pci_unregister_driver(&driver);
2411 }
2412
2413 module_init(alsa_card_ali_init)
2414 module_exit(alsa_card_ali_exit)