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 = 0;
  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[] __devinitdata = {
 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,
1051                                    void *dev_id,
1052                                    struct pt_regs *regs)
1053 {
1054         struct snd_ali  *codec = dev_id;
1055
1056         if (codec == NULL)
1057                 return IRQ_NONE;
1058         snd_ali_interrupt(codec);
1059         return IRQ_HANDLED;
1060 }
1061
1062
1063 static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec, int type, int rec, int channel)
1064 {
1065         struct snd_ali_voice *pvoice = NULL;
1066         int idx;
1067
1068         snd_ali_printk("alloc_voice: type=%d rec=%d\n",type,rec);
1069
1070         spin_lock_irq(&codec->voice_alloc);
1071         if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
1072                 idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
1073                         snd_ali_find_free_channel(codec,rec);
1074                 if(idx < 0) {
1075                         snd_printk(KERN_ERR "ali_alloc_voice: err.\n");
1076                         spin_unlock_irq(&codec->voice_alloc);
1077                         return NULL;
1078                 }
1079                 pvoice = &(codec->synth.voices[idx]);
1080                 pvoice->codec = codec;
1081                 pvoice->use = 1;
1082                 pvoice->pcm = 1;
1083                 pvoice->mode = rec;
1084                 spin_unlock_irq(&codec->voice_alloc);
1085                 return pvoice;
1086         }
1087         spin_unlock_irq(&codec->voice_alloc);
1088         return NULL;
1089 }
1090
1091
1092 static void snd_ali_free_voice(struct snd_ali * codec, struct snd_ali_voice *pvoice)
1093 {
1094         void (*private_free)(void *);
1095         void *private_data;
1096
1097         snd_ali_printk("free_voice: channel=%d\n",pvoice->number);
1098         if (pvoice == NULL || !pvoice->use)
1099                 return;
1100         snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
1101         spin_lock_irq(&codec->voice_alloc);
1102         private_free = pvoice->private_free;
1103         private_data = pvoice->private_data;
1104         pvoice->private_free = NULL;
1105         pvoice->private_data = NULL;
1106         if (pvoice->pcm) {
1107                 snd_ali_free_channel_pcm(codec, pvoice->number);
1108         }
1109         pvoice->use = pvoice->pcm = pvoice->synth = 0;
1110         pvoice->substream = NULL;
1111         spin_unlock_irq(&codec->voice_alloc);
1112         if (private_free)
1113                 private_free(private_data);
1114 }
1115
1116
1117 static void snd_ali_clear_voices(struct snd_ali * codec,
1118                           unsigned int v_min,
1119                           unsigned int v_max)
1120 {
1121         unsigned int i;
1122
1123         for (i = v_min; i <= v_max; i++) {
1124                 snd_ali_stop_voice(codec, i);
1125                 snd_ali_disable_voice_irq(codec, i);
1126         }
1127 }
1128
1129 static void snd_ali_write_voice_regs(struct snd_ali * codec,
1130                          unsigned int Channel,
1131                          unsigned int LBA,
1132                          unsigned int CSO,
1133                          unsigned int ESO,
1134                          unsigned int DELTA,
1135                          unsigned int ALPHA_FMS,
1136                          unsigned int GVSEL,
1137                          unsigned int PAN,
1138                          unsigned int VOL,
1139                          unsigned int CTRL,
1140                          unsigned int EC)
1141 {
1142         unsigned int ctlcmds[4];
1143
1144         outb((unsigned char)(Channel & 0x001f),ALI_REG(codec,ALI_GC_CIR));
1145
1146         ctlcmds[0] =  (CSO << 16) | (ALPHA_FMS & 0x0000ffff);
1147         ctlcmds[1] =  LBA;
1148         ctlcmds[2] =  (ESO << 16) | (DELTA & 0x0ffff);
1149         ctlcmds[3] =  (GVSEL << 31) |
1150                       ((PAN & 0x0000007f) << 24) |
1151                       ((VOL & 0x000000ff) << 16) |
1152                       ((CTRL & 0x0000000f) << 12) |
1153                       (EC & 0x00000fff);
1154
1155         outb(Channel, ALI_REG(codec, ALI_GC_CIR));
1156
1157         outl(ctlcmds[0], ALI_REG(codec,ALI_CSO_ALPHA_FMS));
1158         outl(ctlcmds[1], ALI_REG(codec,ALI_LBA));
1159         outl(ctlcmds[2], ALI_REG(codec,ALI_ESO_DELTA));
1160         outl(ctlcmds[3], ALI_REG(codec,ALI_GVSEL_PAN_VOC_CTRL_EC));
1161
1162         outl(0x30000000, ALI_REG(codec, ALI_EBUF1));    /* Still Mode */
1163         outl(0x30000000, ALI_REG(codec, ALI_EBUF2));    /* Still Mode */
1164 }
1165
1166 static unsigned int snd_ali_convert_rate(unsigned int rate, int rec)
1167 {
1168         unsigned int delta;
1169
1170         if (rate < 4000)  rate = 4000;
1171         if (rate > 48000) rate = 48000;
1172
1173         if (rec) {
1174                 if (rate == 44100)
1175                         delta = 0x116a;
1176                 else if (rate == 8000)
1177                         delta = 0x6000;
1178                 else if (rate == 48000)
1179                         delta = 0x1000;
1180                 else
1181                         delta = ((48000 << 12) / rate) & 0x0000ffff;
1182         } else {
1183                 if (rate == 44100)
1184                         delta = 0xeb3;
1185                 else if (rate == 8000)
1186                         delta = 0x2ab;
1187                 else if (rate == 48000)
1188                         delta = 0x1000;
1189                 else
1190                         delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
1191         }
1192
1193         return delta;
1194 }
1195
1196 static unsigned int snd_ali_control_mode(struct snd_pcm_substream *substream)
1197 {
1198         unsigned int CTRL;
1199         struct snd_pcm_runtime *runtime = substream->runtime;
1200
1201         /* set ctrl mode
1202            CTRL default: 8-bit (unsigned) mono, loop mode enabled
1203          */
1204         CTRL = 0x00000001;
1205         if (snd_pcm_format_width(runtime->format) == 16)
1206                 CTRL |= 0x00000008;     // 16-bit data
1207         if (!snd_pcm_format_unsigned(runtime->format))
1208                 CTRL |= 0x00000002;     // signed data
1209         if (runtime->channels > 1)
1210                 CTRL |= 0x00000004;     // stereo data
1211         return CTRL;
1212 }
1213
1214 /*
1215  *  PCM part
1216  */
1217
1218 static int snd_ali_ioctl(struct snd_pcm_substream *substream,
1219                                   unsigned int cmd, void *arg)
1220 {
1221         return snd_pcm_lib_ioctl(substream, cmd, arg);
1222 }
1223
1224 static int snd_ali_trigger(struct snd_pcm_substream *substream,
1225                                int cmd)
1226
1227 {
1228         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1229         struct list_head *pos;
1230         struct snd_pcm_substream *s;
1231         unsigned int what, whati, capture_flag;
1232         struct snd_ali_voice *pvoice = NULL, *evoice = NULL;
1233         unsigned int val;
1234         int do_start;
1235
1236         switch (cmd) {
1237         case SNDRV_PCM_TRIGGER_START:
1238         case SNDRV_PCM_TRIGGER_RESUME:
1239                 do_start = 1; break;
1240         case SNDRV_PCM_TRIGGER_STOP:
1241         case SNDRV_PCM_TRIGGER_SUSPEND:
1242                 do_start = 0; break;
1243         default:
1244                 return -EINVAL;
1245         }
1246
1247         what = whati = capture_flag = 0;
1248         snd_pcm_group_for_each(pos, substream) {
1249                 s = snd_pcm_group_substream_entry(pos);
1250                 if ((struct snd_ali *) snd_pcm_substream_chip(s) == codec) {
1251                         pvoice = s->runtime->private_data;
1252                         evoice = pvoice->extra;
1253                         what |= 1 << (pvoice->number & 0x1f);
1254                         if (evoice == NULL) {
1255                                 whati |= 1 << (pvoice->number & 0x1f);
1256                         } else {
1257                                 whati |= 1 << (evoice->number & 0x1f);
1258                                 what |= 1 << (evoice->number & 0x1f);
1259                         }
1260                         if (do_start) {
1261                                 pvoice->running = 1;
1262                                 if (evoice != NULL)
1263                                         evoice->running = 1;
1264                         } else {
1265                                 pvoice->running = 0;
1266                                 if (evoice != NULL)
1267                                         evoice->running = 0;
1268                         }
1269                         snd_pcm_trigger_done(s, substream);
1270                         if (pvoice->mode)
1271                                 capture_flag = 1;
1272                 }
1273         }
1274         spin_lock(&codec->reg_lock);
1275         if (! do_start) {
1276                 outl(what, ALI_REG(codec, ALI_STOP));
1277         }
1278         val = inl(ALI_REG(codec, ALI_AINTEN));
1279         if (do_start) {
1280                 val |= whati;
1281         } else {
1282                 val &= ~whati;
1283         }
1284         outl(val, ALI_REG(codec, ALI_AINTEN));
1285         if (do_start) {
1286                 outl(what, ALI_REG(codec, ALI_START));
1287         }
1288         snd_ali_printk("trigger: what=%xh whati=%xh\n",what,whati);
1289         spin_unlock(&codec->reg_lock);
1290
1291         return 0;
1292 }
1293
1294 static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
1295                                  struct snd_pcm_hw_params *hw_params)
1296 {
1297         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1298         struct snd_pcm_runtime *runtime = substream->runtime;
1299         struct snd_ali_voice *pvoice = runtime->private_data;
1300         struct snd_ali_voice *evoice = pvoice->extra;
1301         int err;
1302         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
1303         if (err < 0) return err;
1304
1305         /* voice management */
1306
1307         if (params_buffer_size(hw_params)/2 != params_period_size(hw_params)) {
1308                 if (evoice == NULL) {
1309                         evoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, 0, -1);
1310                         if (evoice == NULL)
1311                                 return -ENOMEM;
1312                         pvoice->extra = evoice;
1313                         evoice->substream = substream;
1314                 }
1315         } else {
1316                 if (evoice != NULL) {
1317                         snd_ali_free_voice(codec, evoice);
1318                         pvoice->extra = evoice = NULL;
1319                 }
1320         }
1321
1322         return 0;
1323 }
1324
1325 static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
1326 {
1327         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1328         struct snd_pcm_runtime *runtime = substream->runtime;
1329         struct snd_ali_voice *pvoice = runtime->private_data;
1330         struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
1331
1332         snd_pcm_lib_free_pages(substream);
1333         if (evoice != NULL) {
1334                 snd_ali_free_voice(codec, evoice);
1335                 pvoice->extra = NULL;
1336         }
1337         return 0;
1338 }
1339
1340 static int snd_ali_hw_params(struct snd_pcm_substream *substream,
1341                                  struct snd_pcm_hw_params *hw_params)
1342 {
1343         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
1344 }
1345
1346 static int snd_ali_hw_free(struct snd_pcm_substream *substream)
1347 {
1348         return snd_pcm_lib_free_pages(substream);
1349 }
1350
1351 static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
1352 {
1353         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1354         struct snd_pcm_runtime *runtime = substream->runtime;
1355         struct snd_ali_voice *pvoice = runtime->private_data;
1356         struct snd_ali_voice *evoice = pvoice->extra;
1357
1358         unsigned int LBA;
1359         unsigned int Delta;
1360         unsigned int ESO;
1361         unsigned int CTRL;
1362         unsigned int GVSEL;
1363         unsigned int PAN;
1364         unsigned int VOL;
1365         unsigned int EC;
1366
1367         snd_ali_printk("playback_prepare ...\n");
1368
1369         spin_lock_irq(&codec->reg_lock);
1370
1371         /* set Delta (rate) value */
1372         Delta = snd_ali_convert_rate(runtime->rate, 0);
1373
1374         if ((pvoice->number == ALI_SPDIF_IN_CHANNEL) ||
1375             (pvoice->number == ALI_PCM_IN_CHANNEL))
1376                 snd_ali_disable_special_channel(codec, pvoice->number);
1377         else if (codec->spdif_support &&
1378                  (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) & ALI_SPDIF_OUT_CH_ENABLE)
1379                  && (pvoice->number == ALI_SPDIF_OUT_CHANNEL)) {
1380                 snd_ali_set_spdif_out_rate(codec, runtime->rate);
1381                 Delta = 0x1000;
1382         }
1383
1384         /* set Loop Back Address */
1385         LBA = runtime->dma_addr;
1386
1387         /* set interrupt count size */
1388         pvoice->count = runtime->period_size;
1389
1390         /* set target ESO for channel */
1391         pvoice->eso = runtime->buffer_size;
1392
1393         snd_ali_printk("playback_prepare: eso=%xh count=%xh\n",pvoice->eso,pvoice->count);
1394
1395         /* set ESO to capture first MIDLP interrupt */
1396         ESO = pvoice->eso -1;
1397         /* set ctrl mode */
1398         CTRL = snd_ali_control_mode(substream);
1399
1400         GVSEL = 1;
1401         PAN = 0;
1402         VOL = 0;
1403         EC = 0;
1404         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);
1405         snd_ali_write_voice_regs(    codec,
1406                                      pvoice->number,
1407                                      LBA,
1408                                      0, /* cso */
1409                                      ESO,
1410                                      Delta,
1411                                      0, /* alpha */
1412                                      GVSEL,
1413                                      PAN,
1414                                      VOL,
1415                                      CTRL,
1416                                      EC);
1417         if (evoice != NULL) {
1418                 evoice->count = pvoice->count;
1419                 evoice->eso = pvoice->count << 1;
1420                 ESO = evoice->eso - 1;
1421                 snd_ali_write_voice_regs(codec,
1422                                      evoice->number,
1423                                      LBA,
1424                                      0, /* cso */
1425                                      ESO,
1426                                      Delta,
1427                                      0, /* alpha */
1428                                      GVSEL,
1429                                      (unsigned int)0x7f,
1430                                      (unsigned int)0x3ff,
1431                                      CTRL,
1432                                      EC);
1433         }
1434         spin_unlock_irq(&codec->reg_lock);
1435         return 0;
1436 }
1437
1438
1439 static int snd_ali_prepare(struct snd_pcm_substream *substream)
1440 {
1441         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1442         struct snd_pcm_runtime *runtime = substream->runtime;
1443         struct snd_ali_voice *pvoice = runtime->private_data;
1444         unsigned int LBA;
1445         unsigned int Delta;
1446         unsigned int ESO;
1447         unsigned int CTRL;
1448         unsigned int GVSEL;
1449         unsigned int PAN;
1450         unsigned int VOL;
1451         unsigned int EC;
1452         u8       bValue;
1453
1454         spin_lock_irq(&codec->reg_lock);
1455
1456         snd_ali_printk("ali_prepare...\n");
1457
1458         snd_ali_enable_special_channel(codec,pvoice->number);
1459
1460         Delta = (pvoice->number == ALI_MODEM_IN_CHANNEL ||
1461                  pvoice->number == ALI_MODEM_OUT_CHANNEL) ?
1462                 0x1000 : snd_ali_convert_rate(runtime->rate, pvoice->mode);
1463
1464         // Prepare capture intr channel
1465         if (pvoice->number == ALI_SPDIF_IN_CHANNEL) {
1466
1467                 unsigned int rate;
1468
1469                 spin_unlock_irq(&codec->reg_lock);
1470                 if (codec->revision != ALI_5451_V02)
1471                         return -1;
1472
1473                 rate = snd_ali_get_spdif_in_rate(codec);
1474                 if (rate == 0) {
1475                         snd_printk(KERN_WARNING "ali_capture_preapre: spdif rate detect err!\n");
1476                         rate = 48000;
1477                 }
1478                 spin_lock_irq(&codec->reg_lock);
1479                 bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
1480                 if (bValue & 0x10) {
1481                         outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
1482                         printk(KERN_WARNING "clear SPDIF parity error flag.\n");
1483                 }
1484
1485                 if (rate != 48000)
1486                         Delta = ((rate << 12)/runtime->rate)&0x00ffff;
1487         }
1488
1489         // set target ESO for channel
1490         pvoice->eso = runtime->buffer_size;
1491
1492         // set interrupt count size
1493         pvoice->count = runtime->period_size;
1494
1495         // set Loop Back Address
1496         LBA = runtime->dma_addr;
1497
1498         // set ESO to capture first MIDLP interrupt
1499         ESO = pvoice->eso - 1;
1500         CTRL = snd_ali_control_mode(substream);
1501         GVSEL = 0;
1502         PAN = 0x00;
1503         VOL = 0x00;
1504         EC = 0;
1505
1506         snd_ali_write_voice_regs(    codec,
1507                                      pvoice->number,
1508                                      LBA,
1509                                      0, /* cso */
1510                                      ESO,
1511                                      Delta,
1512                                      0, /* alpha */
1513                                      GVSEL,
1514                                      PAN,
1515                                      VOL,
1516                                      CTRL,
1517                                      EC);
1518
1519
1520         spin_unlock_irq(&codec->reg_lock);
1521
1522         return 0;
1523 }
1524
1525
1526 static snd_pcm_uframes_t snd_ali_playback_pointer(struct snd_pcm_substream *substream)
1527 {
1528         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1529         struct snd_pcm_runtime *runtime = substream->runtime;
1530         struct snd_ali_voice *pvoice = runtime->private_data;
1531         unsigned int cso;
1532
1533         spin_lock(&codec->reg_lock);
1534         if (!pvoice->running) {
1535                 spin_unlock(&codec->reg_lock);
1536                 return 0;
1537         }
1538         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1539         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1540         spin_unlock(&codec->reg_lock);
1541         snd_ali_printk("playback pointer returned cso=%xh.\n", cso);
1542
1543         return cso;
1544 }
1545
1546
1547 static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1548 {
1549         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1550         struct snd_pcm_runtime *runtime = substream->runtime;
1551         struct snd_ali_voice *pvoice = runtime->private_data;
1552         unsigned int cso;
1553
1554         spin_lock(&codec->reg_lock);
1555         if (!pvoice->running) {
1556                 spin_unlock_irq(&codec->reg_lock);
1557                 return 0;
1558         }
1559         outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1560         cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1561         spin_unlock(&codec->reg_lock);
1562
1563         return cso;
1564 }
1565
1566 static struct snd_pcm_hardware snd_ali_playback =
1567 {
1568         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1569                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1570                                  SNDRV_PCM_INFO_MMAP_VALID |
1571                                  SNDRV_PCM_INFO_RESUME |
1572                                  SNDRV_PCM_INFO_SYNC_START),
1573         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1574                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1575         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1576         .rate_min =             4000,
1577         .rate_max =             48000,
1578         .channels_min =         1,
1579         .channels_max =         2,
1580         .buffer_bytes_max =     (256*1024),
1581         .period_bytes_min =     64,
1582         .period_bytes_max =     (256*1024),
1583         .periods_min =          1,
1584         .periods_max =          1024,
1585         .fifo_size =            0,
1586 };
1587
1588 /*
1589  *  Capture support device description
1590  */
1591
1592 static struct snd_pcm_hardware snd_ali_capture =
1593 {
1594         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1595                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1596                                  SNDRV_PCM_INFO_MMAP_VALID |
1597                                  SNDRV_PCM_INFO_RESUME |
1598                                  SNDRV_PCM_INFO_SYNC_START),
1599         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1600                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1601         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1602         .rate_min =             4000,
1603         .rate_max =             48000,
1604         .channels_min =         1,
1605         .channels_max =         2,
1606         .buffer_bytes_max =     (128*1024),
1607         .period_bytes_min =     64,
1608         .period_bytes_max =     (128*1024),
1609         .periods_min =          1,
1610         .periods_max =          1024,
1611         .fifo_size =            0,
1612 };
1613
1614 static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1615 {
1616         struct snd_ali_voice *pvoice = runtime->private_data;
1617         struct snd_ali *codec;
1618
1619         if (pvoice) {
1620                 codec = pvoice->codec;
1621                 snd_ali_free_voice(pvoice->codec, pvoice);
1622         }
1623 }
1624
1625 static int snd_ali_open(struct snd_pcm_substream *substream, int rec, int channel,
1626                 struct snd_pcm_hardware *phw)
1627 {
1628         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1629         struct snd_pcm_runtime *runtime = substream->runtime;
1630         struct snd_ali_voice *pvoice;
1631
1632         pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec, channel);
1633         if (pvoice == NULL)
1634                 return -EAGAIN;
1635
1636         pvoice->substream = substream;
1637         runtime->private_data = pvoice;
1638         runtime->private_free = snd_ali_pcm_free_substream;
1639
1640         runtime->hw = *phw;
1641         snd_pcm_set_sync(substream);
1642         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1643         return 0;
1644 }
1645
1646 static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1647 {
1648         return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1649 }
1650
1651 static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1652 {
1653         return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1654 }
1655
1656 static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1657 {
1658         return 0;
1659 }
1660
1661 static int snd_ali_close(struct snd_pcm_substream *substream)
1662 {
1663         struct snd_ali *codec = snd_pcm_substream_chip(substream);
1664         struct snd_ali_voice *pvoice = substream->runtime->private_data;
1665
1666         snd_ali_disable_special_channel(codec,pvoice->number);
1667
1668         return 0;
1669 }
1670
1671 static struct snd_pcm_ops snd_ali_playback_ops = {
1672         .open =         snd_ali_playback_open,
1673         .close =        snd_ali_playback_close,
1674         .ioctl =        snd_ali_ioctl,
1675         .hw_params =    snd_ali_playback_hw_params,
1676         .hw_free =      snd_ali_playback_hw_free,
1677         .prepare =      snd_ali_playback_prepare,
1678         .trigger =      snd_ali_trigger,
1679         .pointer =      snd_ali_playback_pointer,
1680 };
1681
1682 static struct snd_pcm_ops snd_ali_capture_ops = {
1683         .open =         snd_ali_capture_open,
1684         .close =        snd_ali_close,
1685         .ioctl =        snd_ali_ioctl,
1686         .hw_params =    snd_ali_hw_params,
1687         .hw_free =      snd_ali_hw_free,
1688         .prepare =      snd_ali_prepare,
1689         .trigger =      snd_ali_trigger,
1690         .pointer =      snd_ali_pointer,
1691 };
1692
1693 /*
1694  * Modem PCM
1695  */
1696
1697 static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1698                                  struct snd_pcm_hw_params *hw_params)
1699 {
1700         struct snd_ali *chip = snd_pcm_substream_chip(substream);
1701         unsigned int modem_num = chip->num_of_codecs - 1;
1702         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE, params_rate(hw_params));
1703         snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1704         return snd_ali_hw_params(substream, hw_params);
1705 }
1706
1707 static struct snd_pcm_hardware snd_ali_modem =
1708 {
1709         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1710                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1711                                  SNDRV_PCM_INFO_MMAP_VALID |
1712                                  SNDRV_PCM_INFO_RESUME |
1713                                  SNDRV_PCM_INFO_SYNC_START),
1714         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
1715         .rates =                SNDRV_PCM_RATE_KNOT|SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000,
1716         .rate_min =             8000,
1717         .rate_max =             16000,
1718         .channels_min =         1,
1719         .channels_max =         1,
1720         .buffer_bytes_max =     (256*1024),
1721         .period_bytes_min =     64,
1722         .period_bytes_max =     (256*1024),
1723         .periods_min =          1,
1724         .periods_max =          1024,
1725         .fifo_size =            0,
1726 };
1727
1728 static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec, int channel)
1729 {
1730         static unsigned int rates [] = {8000,9600,12000,16000};
1731         static struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1732                 .count = ARRAY_SIZE(rates),
1733                 .list = rates,
1734                 .mask = 0,
1735         };
1736         int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1737         if (err)
1738                 return err;
1739         return snd_pcm_hw_constraint_list(substream->runtime, 0,
1740                         SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1741 }
1742
1743 static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1744 {
1745         return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1746 }
1747
1748 static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1749 {
1750         return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1751 }
1752
1753 static struct snd_pcm_ops snd_ali_modem_playback_ops = {
1754         .open =         snd_ali_modem_playback_open,
1755         .close =        snd_ali_close,
1756         .ioctl =        snd_pcm_lib_ioctl,
1757         .hw_params =    snd_ali_modem_hw_params,
1758         .hw_free =      snd_ali_hw_free,
1759         .prepare =      snd_ali_prepare,
1760         .trigger =      snd_ali_trigger,
1761         .pointer =      snd_ali_pointer,
1762 };
1763
1764 static struct snd_pcm_ops snd_ali_modem_capture_ops = {
1765         .open =         snd_ali_modem_capture_open,
1766         .close =        snd_ali_close,
1767         .ioctl =        snd_pcm_lib_ioctl,
1768         .hw_params =    snd_ali_modem_hw_params,
1769         .hw_free =      snd_ali_hw_free,
1770         .prepare =      snd_ali_prepare,
1771         .trigger =      snd_ali_trigger,
1772         .pointer =      snd_ali_pointer,
1773 };
1774
1775
1776 struct ali_pcm_description {
1777         char *name;
1778         unsigned int playback_num;
1779         unsigned int capture_num;
1780         struct snd_pcm_ops *playback_ops;
1781         struct snd_pcm_ops *capture_ops;
1782         unsigned short class;
1783 };
1784
1785
1786 static void snd_ali_pcm_free(struct snd_pcm *pcm)
1787 {
1788         struct snd_ali *codec = pcm->private_data;
1789         codec->pcm[pcm->device] = NULL;
1790 }
1791
1792
1793 static int __devinit snd_ali_pcm(struct snd_ali * codec, int device, struct ali_pcm_description *desc)
1794 {
1795         struct snd_pcm *pcm;
1796         int err;
1797
1798         err = snd_pcm_new(codec->card, desc->name, device,
1799                           desc->playback_num, desc->capture_num, &pcm);
1800         if (err < 0) {
1801                 snd_printk(KERN_ERR "snd_ali_pcm: err called snd_pcm_new.\n");
1802                 return err;
1803         }
1804         pcm->private_data = codec;
1805         pcm->private_free = snd_ali_pcm_free;
1806         if (desc->playback_ops)
1807                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, desc->playback_ops);
1808         if (desc->capture_ops)
1809                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, desc->capture_ops);
1810
1811         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1812                                               snd_dma_pci_data(codec->pci), 64*1024, 128*1024);
1813
1814         pcm->info_flags = 0;
1815         pcm->dev_class = desc->class;
1816         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1817         strcpy(pcm->name, desc->name);
1818         codec->pcm[0] = pcm;
1819         return 0;
1820 }
1821
1822 static struct ali_pcm_description ali_pcms[] = {
1823         { "ALI 5451", ALI_CHANNELS, 1, &snd_ali_playback_ops, &snd_ali_capture_ops },
1824         { "ALI 5451 modem", 1, 1, &snd_ali_modem_playback_ops, &snd_ali_modem_capture_ops, SNDRV_PCM_CLASS_MODEM }
1825 };
1826
1827 static int __devinit snd_ali_build_pcms(struct snd_ali *codec)
1828 {
1829         int i, err;
1830         for(i = 0 ; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms) ; i++)
1831                 if((err = snd_ali_pcm(codec, i, &ali_pcms[i])) < 0)
1832                         return err;
1833         return 0;
1834 }
1835
1836
1837 #define ALI5451_SPDIF(xname, xindex, value) \
1838 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1839 .info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1840 .put = snd_ali5451_spdif_put, .private_value = value}
1841
1842 static int snd_ali5451_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1843 {
1844         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1845         uinfo->count = 1;
1846         uinfo->value.integer.min = 0;
1847         uinfo->value.integer.max = 1;
1848         return 0;
1849 }
1850
1851 static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1852 {
1853         struct snd_ali *codec = kcontrol->private_data;
1854         unsigned int enable;
1855
1856         enable = ucontrol->value.integer.value[0] ? 1 : 0;
1857
1858         spin_lock_irq(&codec->reg_lock);
1859         switch(kcontrol->private_value) {
1860         case 0:
1861                 enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1862                 break;
1863         case 1:
1864                 enable = ((codec->spdif_mask & 0x02) && (codec->spdif_mask & 0x04)) ? 1 : 0;
1865                 break;
1866         case 2:
1867                 enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1868                 break;
1869         default:
1870                 break;
1871         }
1872         ucontrol->value.integer.value[0] = enable;
1873         spin_unlock_irq(&codec->reg_lock);
1874         return 0;
1875 }
1876
1877 static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1878 {
1879         struct snd_ali *codec = kcontrol->private_data;
1880         unsigned int change = 0, enable = 0;
1881
1882         enable = ucontrol->value.integer.value[0] ? 1 : 0;
1883
1884         spin_lock_irq(&codec->reg_lock);
1885         switch (kcontrol->private_value) {
1886         case 0:
1887                 change = (codec->spdif_mask & 0x02) ? 1 : 0;
1888                 change = change ^ enable;
1889                 if (change) {
1890                         if (enable) {
1891                                 codec->spdif_mask |= 0x02;
1892                                 snd_ali_enable_spdif_out(codec);
1893                         } else {
1894                                 codec->spdif_mask &= ~(0x02);
1895                                 codec->spdif_mask &= ~(0x04);
1896                                 snd_ali_disable_spdif_out(codec);
1897                         }
1898                 }
1899                 break;
1900         case 1:
1901                 change = (codec->spdif_mask & 0x04) ? 1 : 0;
1902                 change = change ^ enable;
1903                 if (change && (codec->spdif_mask & 0x02)) {
1904                         if (enable) {
1905                                 codec->spdif_mask |= 0x04;
1906                                 snd_ali_enable_spdif_chnout(codec);
1907                         } else {
1908                                 codec->spdif_mask &= ~(0x04);
1909                                 snd_ali_disable_spdif_chnout(codec);
1910                         }
1911                 }
1912                 break;
1913         case 2:
1914                 change = (codec->spdif_mask & 0x01) ? 1 : 0;
1915                 change = change ^ enable;
1916                 if (change) {
1917                         if (enable) {
1918                                 codec->spdif_mask |= 0x01;
1919                                 snd_ali_enable_spdif_in(codec);
1920                         } else {
1921                                 codec->spdif_mask &= ~(0x01);
1922                                 snd_ali_disable_spdif_in(codec);
1923                         }
1924                 }
1925                 break;
1926         default:
1927                 break;
1928         }
1929         spin_unlock_irq(&codec->reg_lock);
1930
1931         return change;
1932 }
1933
1934 static struct snd_kcontrol_new snd_ali5451_mixer_spdif[] __devinitdata = {
1935         /* spdif aplayback switch */
1936         /* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1937         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1938         /* spdif out to spdif channel */
1939         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1940         /* spdif in from spdif channel */
1941         ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1942 };
1943
1944 static void snd_ali_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1945 {
1946         struct snd_ali *codec = bus->private_data;
1947         codec->ac97_bus = NULL;
1948 }
1949
1950 static void snd_ali_mixer_free_ac97(struct snd_ac97 *ac97)
1951 {
1952         struct snd_ali *codec = ac97->private_data;
1953         codec->ac97[ac97->num] = NULL;
1954 }
1955
1956 static int __devinit snd_ali_mixer(struct snd_ali * codec)
1957 {
1958         struct snd_ac97_template ac97;
1959         unsigned int idx;
1960         int i, err;
1961         static struct snd_ac97_bus_ops ops = {
1962                 .write = snd_ali_codec_write,
1963                 .read = snd_ali_codec_read,
1964         };
1965
1966         if ((err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus)) < 0)
1967                 return err;
1968         codec->ac97_bus->private_free = snd_ali_mixer_free_ac97_bus;
1969
1970         memset(&ac97, 0, sizeof(ac97));
1971         ac97.private_data = codec;
1972         ac97.private_free = snd_ali_mixer_free_ac97;
1973
1974         for ( i = 0 ; i < codec->num_of_codecs ; i++) {
1975                 ac97.num = i;
1976                 if ((err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i])) < 0) {
1977                         snd_printk(KERN_ERR "ali mixer %d creating error.\n", i);
1978                         if(i == 0)
1979                                 return err;
1980                         codec->num_of_codecs = 1;
1981                         break;
1982                 }
1983         }
1984
1985         if (codec->spdif_support) {
1986                 for(idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1987                         err=snd_ctl_add(codec->card, snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1988                         if (err < 0) return err;
1989                 }
1990         }
1991         return 0;
1992 }
1993
1994 #ifdef CONFIG_PM
1995 static int ali_suspend(struct pci_dev *pci, pm_message_t state)
1996 {
1997         struct snd_card *card = pci_get_drvdata(pci);
1998         struct snd_ali *chip = card->private_data;
1999         struct snd_ali_image *im;
2000         int i, j;
2001
2002         im = chip->image;
2003         if (! im)
2004                 return 0;
2005
2006         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2007         for(i = 0 ; i < chip->num_of_codecs ; i++) {
2008                 snd_pcm_suspend_all(chip->pcm[i]);
2009                 snd_ac97_suspend(chip->ac97[i]);
2010         }
2011
2012         spin_lock_irq(&chip->reg_lock);
2013
2014         im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
2015         // im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START));
2016         im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
2017
2018         // disable all IRQ bits
2019         outl(0, ALI_REG(chip, ALI_MISCINT));
2020
2021         for (i = 0; i < ALI_GLOBAL_REGS; i++) {
2022                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
2023                         continue;
2024                 im->regs[i] = inl(ALI_REG(chip, i*4));
2025         }
2026
2027         for (i = 0; i < ALI_CHANNELS; i++) {
2028                 outb(i, ALI_REG(chip, ALI_GC_CIR));
2029                 for (j = 0; j < ALI_CHANNEL_REGS; j++)
2030                         im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
2031         }
2032
2033         // stop all HW channel
2034         outl(0xffffffff, ALI_REG(chip, ALI_STOP));
2035
2036         spin_unlock_irq(&chip->reg_lock);
2037         pci_disable_device(pci);
2038         pci_save_state(pci);
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_restore_state(pci);
2054         pci_enable_device(pci);
2055
2056         spin_lock_irq(&chip->reg_lock);
2057
2058         for (i = 0; i < ALI_CHANNELS; i++) {
2059                 outb(i, ALI_REG(chip, ALI_GC_CIR));
2060                 for (j = 0; j < ALI_CHANNEL_REGS; j++)
2061                         outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
2062         }
2063
2064         for (i = 0; i < ALI_GLOBAL_REGS; i++) {
2065                 if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) || (i*4 == ALI_START))
2066                         continue;
2067                 outl(im->regs[i], ALI_REG(chip, i*4));
2068         }
2069
2070         // start HW channel
2071         outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
2072         // restore IRQ enable bits
2073         outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
2074
2075         spin_unlock_irq(&chip->reg_lock);
2076
2077         for(i = 0 ; i < chip->num_of_codecs ; i++)
2078                 snd_ac97_resume(chip->ac97[i]);
2079
2080         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2081         return 0;
2082 }
2083 #endif /* CONFIG_PM */
2084
2085 static int snd_ali_free(struct snd_ali * codec)
2086 {
2087         if (codec->hw_initialized)
2088                 snd_ali_disable_address_interrupt(codec);
2089         if (codec->irq >= 0) {
2090                 synchronize_irq(codec->irq);
2091                 free_irq(codec->irq, (void *)codec);
2092         }
2093         if (codec->port)
2094                 pci_release_regions(codec->pci);
2095         pci_disable_device(codec->pci);
2096 #ifdef CONFIG_PM
2097         kfree(codec->image);
2098 #endif
2099         pci_dev_put(codec->pci_m1533);
2100         pci_dev_put(codec->pci_m7101);
2101         kfree(codec);
2102         return 0;
2103 }
2104
2105 static int snd_ali_chip_init(struct snd_ali *codec)
2106 {
2107         unsigned int legacy;
2108         unsigned char temp;
2109         struct pci_dev *pci_dev = NULL;
2110
2111         snd_ali_printk("chip initializing ... \n");
2112
2113         if (snd_ali_reset_5451(codec)) {
2114                 snd_printk(KERN_ERR "ali_chip_init: reset 5451 error.\n");
2115                 return -1;
2116         }
2117
2118         if (codec->revision == ALI_5451_V02) {
2119                 pci_dev = codec->pci_m1533;
2120                 pci_read_config_byte(pci_dev, 0x59, &temp);
2121                 temp |= 0x80;
2122                 pci_write_config_byte(pci_dev, 0x59, temp);
2123
2124                 pci_dev = codec->pci_m7101;
2125                 pci_read_config_byte(pci_dev, 0xb8, &temp);
2126                 temp |= 0x20;
2127                 pci_write_config_byte(pci_dev, 0xB8, temp);
2128         }
2129
2130         pci_read_config_dword(codec->pci, 0x44, &legacy);
2131         legacy &= 0xff00ff00;
2132         legacy |= 0x000800aa;
2133         pci_write_config_dword(codec->pci, 0x44, legacy);
2134
2135         outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
2136         outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
2137         outl(0xffffffff, ALI_REG(codec, ALI_AINT));
2138         outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
2139         outb(0x10,       ALI_REG(codec, ALI_MPUR2));
2140
2141         codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
2142         codec->ac97_ext_status = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_STATUS);
2143         if (codec->spdif_support) {
2144                 snd_ali_enable_spdif_out(codec);
2145                 codec->spdif_mask = 0x00000002;
2146         }
2147
2148         codec->num_of_codecs = 1;
2149
2150         /* secondary codec - modem */
2151         if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
2152                 codec->num_of_codecs++;
2153                 outl(inl(ALI_REG(codec, ALI_SCTRL)) |
2154                         (ALI_SCTRL_LINE_IN2|ALI_SCTRL_GPIO_IN2|ALI_SCTRL_LINE_OUT_EN),
2155                         ALI_REG(codec, ALI_SCTRL));
2156         }
2157
2158         snd_ali_printk("chip initialize succeed.\n");
2159         return 0;
2160
2161 }
2162
2163 /* proc for register dump */
2164 static void snd_ali_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buf)
2165 {
2166         struct snd_ali *codec = entry->private_data;
2167         int i;
2168         for(i = 0 ; i < 256 ; i+= 4)
2169                 snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2170 }
2171
2172 static void __devinit snd_ali_proc_init(struct snd_ali *codec)
2173 {
2174         struct snd_info_entry *entry;
2175         if(!snd_card_proc_new(codec->card, "ali5451", &entry))
2176                 snd_info_set_text_ops(entry, codec, snd_ali_proc_read);
2177 }
2178
2179 static int __devinit snd_ali_resources(struct snd_ali *codec)
2180 {
2181         int err;
2182
2183         snd_ali_printk("resouces allocation ...\n");
2184         if ((err = pci_request_regions(codec->pci, "ALI 5451")) < 0)
2185                 return err;
2186         codec->port = pci_resource_start(codec->pci, 0);
2187
2188         if (request_irq(codec->pci->irq, snd_ali_card_interrupt, SA_INTERRUPT|SA_SHIRQ, "ALI 5451", (void *)codec)) {
2189                 snd_printk(KERN_ERR "Unable to request irq.\n");
2190                 return -EBUSY;
2191         }
2192         codec->irq = codec->pci->irq;
2193         snd_ali_printk("resouces allocated.\n");
2194         return 0;
2195 }
2196 static int snd_ali_dev_free(struct snd_device *device)
2197 {
2198         struct snd_ali *codec=device->device_data;
2199         snd_ali_free(codec);
2200         return 0;
2201 }
2202
2203 static int __devinit snd_ali_create(struct snd_card *card,
2204                                     struct pci_dev *pci,
2205                                     int pcm_streams,
2206                                     int spdif_support,
2207                                     struct snd_ali ** r_ali)
2208 {
2209         struct snd_ali *codec;
2210         int i, err;
2211         unsigned short cmdw;
2212         static struct snd_device_ops ops = {
2213                 .dev_free = snd_ali_dev_free,
2214         };
2215
2216         *r_ali = NULL;
2217
2218         snd_ali_printk("creating ...\n");
2219
2220         /* enable PCI device */
2221         if ((err = pci_enable_device(pci)) < 0)
2222                 return err;
2223         /* check, if we can restrict PCI DMA transfers to 31 bits */
2224         if (pci_set_dma_mask(pci, DMA_31BIT_MASK) < 0 ||
2225             pci_set_consistent_dma_mask(pci, DMA_31BIT_MASK) < 0) {
2226                 snd_printk(KERN_ERR "architecture does not support 31bit PCI busmaster DMA\n");
2227                 pci_disable_device(pci);
2228                 return -ENXIO;
2229         }
2230
2231         if ((codec = kzalloc(sizeof(*codec), GFP_KERNEL)) == NULL) {
2232                 pci_disable_device(pci);
2233                 return -ENOMEM;
2234         }
2235
2236         spin_lock_init(&codec->reg_lock);
2237         spin_lock_init(&codec->voice_alloc);
2238
2239         codec->card = card;
2240         codec->pci = pci;
2241         codec->irq = -1;
2242         pci_read_config_byte(pci, PCI_REVISION_ID, &codec->revision);
2243         codec->spdif_support = spdif_support;
2244
2245         if (pcm_streams < 1)
2246                 pcm_streams = 1;
2247         if (pcm_streams > 32)
2248                 pcm_streams = 32;
2249
2250         pci_set_master(pci);
2251         pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2252         if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2253                 cmdw |= PCI_COMMAND_IO;
2254                 pci_write_config_word(pci, PCI_COMMAND, cmdw);
2255         }
2256         pci_set_master(pci);
2257
2258         if (snd_ali_resources(codec)) {
2259                 snd_ali_free(codec);
2260                 return -EBUSY;
2261         }
2262
2263         synchronize_irq(pci->irq);
2264
2265         codec->synth.chmap = 0;
2266         codec->synth.chcnt = 0;
2267         codec->spdif_mask = 0;
2268         codec->synth.synthcount = 0;
2269
2270         if (codec->revision == ALI_5451_V02)
2271                 codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2272         else
2273                 codec->chregs.regs.ac97read = ALI_AC97_READ;
2274         codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2275
2276         codec->chregs.regs.start  = ALI_START;
2277         codec->chregs.regs.stop   = ALI_STOP;
2278         codec->chregs.regs.aint   = ALI_AINT;
2279         codec->chregs.regs.ainten = ALI_AINTEN;
2280
2281         codec->chregs.data.start  = 0x00;
2282         codec->chregs.data.stop   = 0x00;
2283         codec->chregs.data.aint   = 0x00;
2284         codec->chregs.data.ainten = 0x00;
2285
2286         /* M1533: southbridge */
2287         codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2288         if (! codec->pci_m1533) {
2289                 snd_printk(KERN_ERR "ali5451: cannot find ALi 1533 chip.\n");
2290                 snd_ali_free(codec);
2291                 return -ENODEV;
2292         }
2293         /* M7101: power management */
2294         codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2295         if (! codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2296                 snd_printk(KERN_ERR "ali5451: cannot find ALi 7101 chip.\n");
2297                 snd_ali_free(codec);
2298                 return -ENODEV;
2299         }
2300
2301         snd_ali_printk("snd_device_new is called.\n");
2302         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops)) < 0) {
2303                 snd_ali_free(codec);
2304                 return err;
2305         }
2306
2307         /* initialise synth voices*/
2308         for (i = 0; i < ALI_CHANNELS; i++ ) {
2309                 codec->synth.voices[i].number = i;
2310         }
2311
2312         if ((err = snd_ali_chip_init(codec)) < 0) {
2313                 snd_printk(KERN_ERR "ali create: chip init error.\n");
2314                 return err;
2315         }
2316
2317 #ifdef CONFIG_PM
2318         codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2319         if (! codec->image)
2320                 snd_printk(KERN_WARNING "can't allocate apm buffer\n");
2321 #endif
2322
2323         snd_ali_enable_address_interrupt(codec);
2324         codec->hw_initialized = 1;
2325
2326         *r_ali = codec;
2327         snd_ali_printk("created.\n");
2328         return 0;
2329 }
2330
2331 static int __devinit snd_ali_probe(struct pci_dev *pci,
2332                                    const struct pci_device_id *pci_id)
2333 {
2334         struct snd_card *card;
2335         struct snd_ali *codec;
2336         int err;
2337
2338         snd_ali_printk("probe ...\n");
2339
2340         card = snd_card_new(index, id, THIS_MODULE, 0);
2341         if (card == NULL)
2342                 return -ENOMEM;
2343
2344         if ((err = snd_ali_create(card, pci, pcm_channels, spdif, &codec)) < 0) {
2345                 snd_card_free(card);
2346                 return err;
2347         }
2348         card->private_data = codec;
2349
2350         snd_ali_printk("mixer building ...\n");
2351         if ((err = snd_ali_mixer(codec)) < 0) {
2352                 snd_card_free(card);
2353                 return err;
2354         }
2355
2356         snd_ali_printk("pcm building ...\n");
2357         if ((err = snd_ali_build_pcms(codec)) < 0) {
2358                 snd_card_free(card);
2359                 return err;
2360         }
2361
2362         snd_ali_proc_init(codec);
2363
2364         strcpy(card->driver, "ALI5451");
2365         strcpy(card->shortname, "ALI 5451");
2366
2367         sprintf(card->longname, "%s at 0x%lx, irq %li",
2368                 card->shortname, codec->port, codec->irq);
2369
2370         snd_ali_printk("register card.\n");
2371         if ((err = snd_card_register(card)) < 0) {
2372                 snd_card_free(card);
2373                 return err;
2374         }
2375         pci_set_drvdata(pci, card);
2376         return 0;
2377 }
2378
2379 static void __devexit snd_ali_remove(struct pci_dev *pci)
2380 {
2381         snd_card_free(pci_get_drvdata(pci));
2382         pci_set_drvdata(pci, NULL);
2383 }
2384
2385 static struct pci_driver driver = {
2386         .name = "ALI 5451",
2387         .id_table = snd_ali_ids,
2388         .probe = snd_ali_probe,
2389         .remove = __devexit_p(snd_ali_remove),
2390 #ifdef CONFIG_PM
2391         .suspend = ali_suspend,
2392         .resume = ali_resume,
2393 #endif
2394 };
2395
2396 static int __init alsa_card_ali_init(void)
2397 {
2398         return pci_register_driver(&driver);
2399 }
2400
2401 static void __exit alsa_card_ali_exit(void)
2402 {
2403         pci_unregister_driver(&driver);
2404 }
2405
2406 module_init(alsa_card_ali_init)
2407 module_exit(alsa_card_ali_exit)