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         pci_disable_device(pci);
2036         pci_save_state(pci);
2037         return 0;
2038 }
2039
2040 static int ali_resume(struct pci_dev *pci)
2041 {
2042         struct snd_card *card = pci_get_drvdata(pci);
2043         struct snd_ali *chip = card->private_data;
2044         struct snd_ali_image *im;
2045         int i, j;
2046
2047         im = chip->image;
2048         if (! im)
2049                 return 0;
2050
2051         pci_restore_state(pci);
2052         pci_enable_device(pci);
2053
2054         spin_lock_irq(&chip->reg_lock);
2055
2056         for (i = 0; i < ALI_CHANNELS; i++) {
2057                 outb(i, ALI_REG(chip, ALI_GC_CIR));
2058                 for (j = 0; j < ALI_CHANNEL_REGS; j++)
2059                         outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
2060         }
2061
2062         for (i = 0; i < ALI_GLOBAL_REGS; i++) {
2063                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) || (i*4 == ALI_START))
2064                         continue;
2065                 outl(im->regs[i], ALI_REG(chip, i*4));
2066         }
2067
2068         // start HW channel
2069         outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
2070         // restore IRQ enable bits
2071         outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
2072
2073         spin_unlock_irq(&chip->reg_lock);
2074
2075         for(i = 0 ; i < chip->num_of_codecs ; i++)
2076                 snd_ac97_resume(chip->ac97[i]);
2077
2078         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2079         return 0;
2080 }
2081 #endif /* CONFIG_PM */
2082
2083 static int snd_ali_free(struct snd_ali * codec)
2084 {
2085         if (codec->hw_initialized)
2086                 snd_ali_disable_address_interrupt(codec);
2087         if (codec->irq >= 0) {
2088                 synchronize_irq(codec->irq);
2089                 free_irq(codec->irq, (void *)codec);
2090         }
2091         if (codec->port)
2092                 pci_release_regions(codec->pci);
2093         pci_disable_device(codec->pci);
2094 #ifdef CONFIG_PM
2095         kfree(codec->image);
2096 #endif
2097         pci_dev_put(codec->pci_m1533);
2098         pci_dev_put(codec->pci_m7101);
2099         kfree(codec);
2100         return 0;
2101 }
2102
2103 static int snd_ali_chip_init(struct snd_ali *codec)
2104 {
2105         unsigned int legacy;
2106         unsigned char temp;
2107         struct pci_dev *pci_dev = NULL;
2108
2109         snd_ali_printk("chip initializing ... \n");
2110
2111         if (snd_ali_reset_5451(codec)) {
2112                 snd_printk(KERN_ERR "ali_chip_init: reset 5451 error.\n");
2113                 return -1;
2114         }
2115
2116         if (codec->revision == ALI_5451_V02) {
2117                 pci_dev = codec->pci_m1533;
2118                 pci_read_config_byte(pci_dev, 0x59, &temp);
2119                 temp |= 0x80;
2120                 pci_write_config_byte(pci_dev, 0x59, temp);
2121
2122                 pci_dev = codec->pci_m7101;
2123                 pci_read_config_byte(pci_dev, 0xb8, &temp);
2124                 temp |= 0x20;
2125                 pci_write_config_byte(pci_dev, 0xB8, temp);
2126         }
2127
2128         pci_read_config_dword(codec->pci, 0x44, &legacy);
2129         legacy &= 0xff00ff00;
2130         legacy |= 0x000800aa;
2131         pci_write_config_dword(codec->pci, 0x44, legacy);
2132
2133         outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
2134         outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
2135         outl(0xffffffff, ALI_REG(codec, ALI_AINT));
2136         outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
2137         outb(0x10,       ALI_REG(codec, ALI_MPUR2));
2138
2139         codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
2140         codec->ac97_ext_status = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_STATUS);
2141         if (codec->spdif_support) {
2142                 snd_ali_enable_spdif_out(codec);
2143                 codec->spdif_mask = 0x00000002;
2144         }
2145
2146         codec->num_of_codecs = 1;
2147
2148         /* secondary codec - modem */
2149         if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
2150                 codec->num_of_codecs++;
2151                 outl(inl(ALI_REG(codec, ALI_SCTRL)) |
2152                         (ALI_SCTRL_LINE_IN2|ALI_SCTRL_GPIO_IN2|ALI_SCTRL_LINE_OUT_EN),
2153                         ALI_REG(codec, ALI_SCTRL));
2154         }
2155
2156         snd_ali_printk("chip initialize succeed.\n");
2157         return 0;
2158
2159 }
2160
2161 /* proc for register dump */
2162 static void snd_ali_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buf)
2163 {
2164         struct snd_ali *codec = entry->private_data;
2165         int i;
2166         for(i = 0 ; i < 256 ; i+= 4)
2167                 snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2168 }
2169
2170 static void __devinit snd_ali_proc_init(struct snd_ali *codec)
2171 {
2172         struct snd_info_entry *entry;
2173         if(!snd_card_proc_new(codec->card, "ali5451", &entry))
2174                 snd_info_set_text_ops(entry, codec, snd_ali_proc_read);
2175 }
2176
2177 static int __devinit snd_ali_resources(struct snd_ali *codec)
2178 {
2179         int err;
2180
2181         snd_ali_printk("resouces allocation ...\n");
2182         if ((err = pci_request_regions(codec->pci, "ALI 5451")) < 0)
2183                 return err;
2184         codec->port = pci_resource_start(codec->pci, 0);
2185
2186         if (request_irq(codec->pci->irq, snd_ali_card_interrupt, IRQF_DISABLED|IRQF_SHARED, "ALI 5451", (void *)codec)) {
2187                 snd_printk(KERN_ERR "Unable to request irq.\n");
2188                 return -EBUSY;
2189         }
2190         codec->irq = codec->pci->irq;
2191         snd_ali_printk("resouces allocated.\n");
2192         return 0;
2193 }
2194 static int snd_ali_dev_free(struct snd_device *device)
2195 {
2196         struct snd_ali *codec=device->device_data;
2197         snd_ali_free(codec);
2198         return 0;
2199 }
2200
2201 static int __devinit snd_ali_create(struct snd_card *card,
2202                                     struct pci_dev *pci,
2203                                     int pcm_streams,
2204                                     int spdif_support,
2205                                     struct snd_ali ** r_ali)
2206 {
2207         struct snd_ali *codec;
2208         int i, err;
2209         unsigned short cmdw;
2210         static struct snd_device_ops ops = {
2211                 .dev_free = snd_ali_dev_free,
2212         };
2213
2214         *r_ali = NULL;
2215
2216         snd_ali_printk("creating ...\n");
2217
2218         /* enable PCI device */
2219         if ((err = pci_enable_device(pci)) < 0)
2220                 return err;
2221         /* check, if we can restrict PCI DMA transfers to 31 bits */
2222         if (pci_set_dma_mask(pci, DMA_31BIT_MASK) < 0 ||
2223             pci_set_consistent_dma_mask(pci, DMA_31BIT_MASK) < 0) {
2224                 snd_printk(KERN_ERR "architecture does not support 31bit PCI busmaster DMA\n");
2225                 pci_disable_device(pci);
2226                 return -ENXIO;
2227         }
2228
2229         if ((codec = kzalloc(sizeof(*codec), GFP_KERNEL)) == NULL) {
2230                 pci_disable_device(pci);
2231                 return -ENOMEM;
2232         }
2233
2234         spin_lock_init(&codec->reg_lock);
2235         spin_lock_init(&codec->voice_alloc);
2236
2237         codec->card = card;
2238         codec->pci = pci;
2239         codec->irq = -1;
2240         pci_read_config_byte(pci, PCI_REVISION_ID, &codec->revision);
2241         codec->spdif_support = spdif_support;
2242
2243         if (pcm_streams < 1)
2244                 pcm_streams = 1;
2245         if (pcm_streams > 32)
2246                 pcm_streams = 32;
2247
2248         pci_set_master(pci);
2249         pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2250         if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2251                 cmdw |= PCI_COMMAND_IO;
2252                 pci_write_config_word(pci, PCI_COMMAND, cmdw);
2253         }
2254         pci_set_master(pci);
2255
2256         if (snd_ali_resources(codec)) {
2257                 snd_ali_free(codec);
2258                 return -EBUSY;
2259         }
2260
2261         synchronize_irq(pci->irq);
2262
2263         codec->synth.chmap = 0;
2264         codec->synth.chcnt = 0;
2265         codec->spdif_mask = 0;
2266         codec->synth.synthcount = 0;
2267
2268         if (codec->revision == ALI_5451_V02)
2269                 codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2270         else
2271                 codec->chregs.regs.ac97read = ALI_AC97_READ;
2272         codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2273
2274         codec->chregs.regs.start  = ALI_START;
2275         codec->chregs.regs.stop   = ALI_STOP;
2276         codec->chregs.regs.aint   = ALI_AINT;
2277         codec->chregs.regs.ainten = ALI_AINTEN;
2278
2279         codec->chregs.data.start  = 0x00;
2280         codec->chregs.data.stop   = 0x00;
2281         codec->chregs.data.aint   = 0x00;
2282         codec->chregs.data.ainten = 0x00;
2283
2284         /* M1533: southbridge */
2285         codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2286         if (! codec->pci_m1533) {
2287                 snd_printk(KERN_ERR "ali5451: cannot find ALi 1533 chip.\n");
2288                 snd_ali_free(codec);
2289                 return -ENODEV;
2290         }
2291         /* M7101: power management */
2292         codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2293         if (! codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2294                 snd_printk(KERN_ERR "ali5451: cannot find ALi 7101 chip.\n");
2295                 snd_ali_free(codec);
2296                 return -ENODEV;
2297         }
2298
2299         snd_ali_printk("snd_device_new is called.\n");
2300         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops)) < 0) {
2301                 snd_ali_free(codec);
2302                 return err;
2303         }
2304
2305         /* initialise synth voices*/
2306         for (i = 0; i < ALI_CHANNELS; i++ ) {
2307                 codec->synth.voices[i].number = i;
2308         }
2309
2310         if ((err = snd_ali_chip_init(codec)) < 0) {
2311                 snd_printk(KERN_ERR "ali create: chip init error.\n");
2312                 return err;
2313         }
2314
2315 #ifdef CONFIG_PM
2316         codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2317         if (! codec->image)
2318                 snd_printk(KERN_WARNING "can't allocate apm buffer\n");
2319 #endif
2320
2321         snd_ali_enable_address_interrupt(codec);
2322         codec->hw_initialized = 1;
2323
2324         *r_ali = codec;
2325         snd_ali_printk("created.\n");
2326         return 0;
2327 }
2328
2329 static int __devinit snd_ali_probe(struct pci_dev *pci,
2330                                    const struct pci_device_id *pci_id)
2331 {
2332         struct snd_card *card;
2333         struct snd_ali *codec;
2334         int err;
2335
2336         snd_ali_printk("probe ...\n");
2337
2338         card = snd_card_new(index, id, THIS_MODULE, 0);
2339         if (card == NULL)
2340                 return -ENOMEM;
2341
2342         if ((err = snd_ali_create(card, pci, pcm_channels, spdif, &codec)) < 0) {
2343                 snd_card_free(card);
2344                 return err;
2345         }
2346         card->private_data = codec;
2347
2348         snd_ali_printk("mixer building ...\n");
2349         if ((err = snd_ali_mixer(codec)) < 0) {
2350                 snd_card_free(card);
2351                 return err;
2352         }
2353
2354         snd_ali_printk("pcm building ...\n");
2355         if ((err = snd_ali_build_pcms(codec)) < 0) {
2356                 snd_card_free(card);
2357                 return err;
2358         }
2359
2360         snd_ali_proc_init(codec);
2361
2362         strcpy(card->driver, "ALI5451");
2363         strcpy(card->shortname, "ALI 5451");
2364
2365         sprintf(card->longname, "%s at 0x%lx, irq %li",
2366                 card->shortname, codec->port, codec->irq);
2367
2368         snd_ali_printk("register card.\n");
2369         if ((err = snd_card_register(card)) < 0) {
2370                 snd_card_free(card);
2371                 return err;
2372         }
2373         pci_set_drvdata(pci, card);
2374         return 0;
2375 }
2376
2377 static void __devexit snd_ali_remove(struct pci_dev *pci)
2378 {
2379         snd_card_free(pci_get_drvdata(pci));
2380         pci_set_drvdata(pci, NULL);
2381 }
2382
2383 static struct pci_driver driver = {
2384         .name = "ALI 5451",
2385         .id_table = snd_ali_ids,
2386         .probe = snd_ali_probe,
2387         .remove = __devexit_p(snd_ali_remove),
2388 #ifdef CONFIG_PM
2389         .suspend = ali_suspend,
2390         .resume = ali_resume,
2391 #endif
2392 };
2393
2394 static int __init alsa_card_ali_init(void)
2395 {
2396         return pci_register_driver(&driver);
2397 }
2398
2399 static void __exit alsa_card_ali_exit(void)
2400 {
2401         pci_unregister_driver(&driver);
2402 }
2403
2404 module_init(alsa_card_ali_init)
2405 module_exit(alsa_card_ali_exit)