sound/pci/emu10k1/emu10k1x.c

   1 /*
   2  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
   3  *  Driver EMU10K1X chips
   4  *
   5  *  Parts of this code were adapted from audigyls.c driver which is
   6  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
   7  *
   8  *  BUGS:
   9  *    --
  10  *
  11  *  TODO:
  12  *
  13  *  Chips (SB0200 model):
  14  *    - EMU10K1X-DBQ
  15  *    - STAC 9708T
  16  *
  17  *   This program is free software; you can redistribute it and/or modify
  18  *   it under the terms of the GNU General Public License as published by
  19  *   the Free Software Foundation; either version 2 of the License, or
  20  *   (at your option) any later version.
  21  *
  22  *   This program is distributed in the hope that it will be useful,
  23  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *   GNU General Public License for more details.
  26  *
  27  *   You should have received a copy of the GNU General Public License
  28  *   along with this program; if not, write to the Free Software
  29  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  30  *
  31  */
  32 #include <linux/init.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/slab.h>
  37 #include <linux/moduleparam.h>
  38 #include <sound/core.h>
  39 #include <sound/initval.h>
  40 #include <sound/pcm.h>
  41 #include <sound/ac97_codec.h>
  42 #include <sound/info.h>
  43 #include <sound/rawmidi.h>
  44
  45 MODULE_AUTHOR("Francisco Moraes <fmoraes@nc.rr.com>");
  46 MODULE_DESCRIPTION("EMU10K1X");
  47 MODULE_LICENSE("GPL");
  48 MODULE_SUPPORTED_DEVICE("{{Dell Creative Labs,SB Live!}");
  49
  50 // module parameters (see "Module Parameters")
  51 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  52 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  53 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  54
  55 module_param_array(index, int, NULL, 0444);
  56 MODULE_PARM_DESC(index, "Index value for the EMU10K1X soundcard.");
  57 module_param_array(id, charp, NULL, 0444);
  58 MODULE_PARM_DESC(id, "ID string for the EMU10K1X soundcard.");
  59 module_param_array(enable, bool, NULL, 0444);
  60 MODULE_PARM_DESC(enable, "Enable the EMU10K1X soundcard.");
  61
  62
  63 // some definitions were borrowed from emu10k1 driver as they seem to be the same
  64 /************************************************************************************************/
  65 /* PCI function 0 registers, address = <val> + PCIBASE0                                         */
  66 /************************************************************************************************/
  67
  68 #define PTR                     0x00            /* Indexed register set pointer register        */
  69                                                 /* NOTE: The CHANNELNUM and ADDRESS words can   */
  70                                                 /* be modified independently of each other.     */
  71
  72 #define DATA                    0x04            /* Indexed register set data register           */
  73
  74 #define IPR                     0x08            /* Global interrupt pending register            */
  75                                                 /* Clear pending interrupts by writing a 1 to   */
  76                                                 /* the relevant bits and zero to the other bits */
  77 #define IPR_MIDITRANSBUFEMPTY   0x00000001      /* MIDI UART transmit buffer empty              */
  78 #define IPR_MIDIRECVBUFEMPTY    0x00000002      /* MIDI UART receive buffer empty               */
  79 #define IPR_CH_0_LOOP           0x00000800      /* Channel 0 loop                               */
  80 #define IPR_CH_0_HALF_LOOP      0x00000100      /* Channel 0 half loop                          */
  81 #define IPR_CAP_0_LOOP          0x00080000      /* Channel capture loop                         */
  82 #define IPR_CAP_0_HALF_LOOP     0x00010000      /* Channel capture half loop                    */
  83
  84 #define INTE                    0x0c            /* Interrupt enable register                    */
  85 #define INTE_MIDITXENABLE       0x00000001      /* Enable MIDI transmit-buffer-empty interrupts */
  86 #define INTE_MIDIRXENABLE       0x00000002      /* Enable MIDI receive-buffer-empty interrupts  */
  87 #define INTE_CH_0_LOOP          0x00000800      /* Channel 0 loop                               */
  88 #define INTE_CH_0_HALF_LOOP     0x00000100      /* Channel 0 half loop                          */
  89 #define INTE_CAP_0_LOOP         0x00080000      /* Channel capture loop                         */
  90 #define INTE_CAP_0_HALF_LOOP    0x00010000      /* Channel capture half loop                    */
  91
  92 #define HCFG                    0x14            /* Hardware config register                     */
  93
  94 #define HCFG_LOCKSOUNDCACHE     0x00000008      /* 1 = Cancel bustmaster accesses to soundcache */
  95                                                 /* NOTE: This should generally never be used.   */
  96 #define HCFG_AUDIOENABLE        0x00000001      /* 0 = CODECs transmit zero-valued samples      */
  97                                                 /* Should be set to 1 when the EMU10K1 is       */
  98                                                 /* completely initialized.                      */
  99 #define GPIO                    0x18            /* Defaults: 00001080-Analog, 00001000-SPDIF.   */
 100
 101
 102 #define AC97DATA                0x1c            /* AC97 register set data register (16 bit)     */
 103
 104 #define AC97ADDRESS             0x1e            /* AC97 register set address register (8 bit)   */
 105
 106 /********************************************************************************************************/
 107 /* Emu10k1x pointer-offset register set, accessed through the PTR and DATA registers                    */
 108 /********************************************************************************************************/
 109 #define PLAYBACK_LIST_ADDR      0x00            /* Base DMA address of a list of pointers to each period/size */
 110                                                 /* One list entry: 4 bytes for DMA address,
 111                                                  * 4 bytes for period_size << 16.
 112                                                  * One list entry is 8 bytes long.
 113                                                  * One list entry for each period in the buffer.
 114                                                  */
 115 #define PLAYBACK_LIST_SIZE      0x01            /* Size of list in bytes << 16. E.g. 8 periods -> 0x00380000  */
 116 #define PLAYBACK_LIST_PTR       0x02            /* Pointer to the current period being played */
 117 #define PLAYBACK_DMA_ADDR       0x04            /* Playback DMA addresss */
 118 #define PLAYBACK_PERIOD_SIZE    0x05            /* Playback period size */
 119 #define PLAYBACK_POINTER        0x06            /* Playback period pointer. Sample currently in DAC */
 120 #define PLAYBACK_UNKNOWN1       0x07
 121 #define PLAYBACK_UNKNOWN2       0x08
 122
 123 /* Only one capture channel supported */
 124 #define CAPTURE_DMA_ADDR        0x10            /* Capture DMA address */
 125 #define CAPTURE_BUFFER_SIZE     0x11            /* Capture buffer size */
 126 #define CAPTURE_POINTER         0x12            /* Capture buffer pointer. Sample currently in ADC */
 127 #define CAPTURE_UNKNOWN         0x13
 128
 129 /* From 0x20 - 0x3f, last samples played on each channel */
 130
 131 #define TRIGGER_CHANNEL         0x40            /* Trigger channel playback                     */
 132 #define TRIGGER_CHANNEL_0       0x00000001      /* Trigger channel 0                            */
 133 #define TRIGGER_CHANNEL_1       0x00000002      /* Trigger channel 1                            */
 134 #define TRIGGER_CHANNEL_2       0x00000004      /* Trigger channel 2                            */
 135 #define TRIGGER_CAPTURE         0x00000100      /* Trigger capture channel                      */
 136
 137 #define ROUTING                 0x41            /* Setup sound routing ?                        */
 138 #define ROUTING_FRONT_LEFT      0x00000001
 139 #define ROUTING_FRONT_RIGHT     0x00000002
 140 #define ROUTING_REAR_LEFT       0x00000004
 141 #define ROUTING_REAR_RIGHT      0x00000008
 142 #define ROUTING_CENTER_LFE      0x00010000
 143
 144 #define SPCS0                   0x42            /* SPDIF output Channel Status 0 register       */
 145
 146 #define SPCS1                   0x43            /* SPDIF output Channel Status 1 register       */
 147
 148 #define SPCS2                   0x44            /* SPDIF output Channel Status 2 register       */
 149
 150 #define SPCS_CLKACCYMASK        0x30000000      /* Clock accuracy                               */
 151 #define SPCS_CLKACCY_1000PPM    0x00000000      /* 1000 parts per million                       */
 152 #define SPCS_CLKACCY_50PPM      0x10000000      /* 50 parts per million                         */
 153 #define SPCS_CLKACCY_VARIABLE   0x20000000      /* Variable accuracy                            */
 154 #define SPCS_SAMPLERATEMASK     0x0f000000      /* Sample rate                                  */
 155 #define SPCS_SAMPLERATE_44      0x00000000      /* 44.1kHz sample rate                          */
 156 #define SPCS_SAMPLERATE_48      0x02000000      /* 48kHz sample rate                            */
 157 #define SPCS_SAMPLERATE_32      0x03000000      /* 32kHz sample rate                            */
 158 #define SPCS_CHANNELNUMMASK     0x00f00000      /* Channel number                               */
 159 #define SPCS_CHANNELNUM_UNSPEC  0x00000000      /* Unspecified channel number                   */
 160 #define SPCS_CHANNELNUM_LEFT    0x00100000      /* Left channel                                 */
 161 #define SPCS_CHANNELNUM_RIGHT   0x00200000      /* Right channel                                */
 162 #define SPCS_SOURCENUMMASK      0x000f0000      /* Source number                                */
 163 #define SPCS_SOURCENUM_UNSPEC   0x00000000      /* Unspecified source number                    */
 164 #define SPCS_GENERATIONSTATUS   0x00008000      /* Originality flag (see IEC-958 spec)          */
 165 #define SPCS_CATEGORYCODEMASK   0x00007f00      /* Category code (see IEC-958 spec)             */
 166 #define SPCS_MODEMASK           0x000000c0      /* Mode (see IEC-958 spec)                      */
 167 #define SPCS_EMPHASISMASK       0x00000038      /* Emphasis                                     */
 168 #define SPCS_EMPHASIS_NONE      0x00000000      /* No emphasis                                  */
 169 #define SPCS_EMPHASIS_50_15     0x00000008      /* 50/15 usec 2 channel                         */
 170 #define SPCS_COPYRIGHT          0x00000004      /* Copyright asserted flag -- do not modify     */
 171 #define SPCS_NOTAUDIODATA       0x00000002      /* 0 = Digital audio, 1 = not audio             */
 172 #define SPCS_PROFESSIONAL       0x00000001      /* 0 = Consumer (IEC-958), 1 = pro (AES3-1992)  */
 173
 174 #define SPDIF_SELECT            0x45            /* Enables SPDIF or Analogue outputs 0-Analogue, 0x700-SPDIF */
 175
 176 /* This is the MPU port on the card                                                             */
 177 #define MUDATA          0x47
 178 #define MUCMD           0x48
 179 #define MUSTAT          MUCMD
 180
 181 /* From 0x50 - 0x5f, last samples captured */
 182
 183 /**
 184  * The hardware has 3 channels for playback and 1 for capture.
 185  *  - channel 0 is the front channel
 186  *  - channel 1 is the rear channel
 187  *  - channel 2 is the center/lfe chanel
 188  * Volume is controlled by the AC97 for the front and rear channels by
 189  * the PCM Playback Volume, Sigmatel Surround Playback Volume and
 190  * Surround Playback Volume. The Sigmatel 4-Speaker Stereo switch affects
 191  * the front/rear channel mixing in the REAR OUT jack. When using the
 192  * 4-Speaker Stereo, both front and rear channels will be mixed in the
 193  * REAR OUT.
 194  * The center/lfe channel has no volume control and cannot be muted during
 195  * playback.
 196  */
 197
 198 struct emu10k1x_voice {
 199         struct emu10k1x *emu;
 200         int number;
 201         int use;
 202
 203         struct emu10k1x_pcm *epcm;
 204 };
 205
 206 struct emu10k1x_pcm {
 207         struct emu10k1x *emu;
 208         struct snd_pcm_substream *substream;
 209         struct emu10k1x_voice *voice;
 210         unsigned short running;
 211 };
 212
 213 struct emu10k1x_midi {
 214         struct emu10k1x *emu;
 215         struct snd_rawmidi *rmidi;
 216         struct snd_rawmidi_substream *substream_input;
 217         struct snd_rawmidi_substream *substream_output;
 218         unsigned int midi_mode;
 219         spinlock_t input_lock;
 220         spinlock_t output_lock;
 221         spinlock_t open_lock;
 222         int tx_enable, rx_enable;
 223         int port;
 224         int ipr_tx, ipr_rx;
 225         void (*interrupt)(struct emu10k1x *emu, unsigned int status);
 226 };
 227
 228 // definition of the chip-specific record
 229 struct emu10k1x {
 230         struct snd_card *card;
 231         struct pci_dev *pci;
 232
 233         unsigned long port;
 234         struct resource *res_port;
 235         int irq;
 236
 237         unsigned char revision;         /* chip revision */
 238         unsigned int serial;            /* serial number */
 239         unsigned short model;           /* subsystem id */
 240
 241         spinlock_t emu_lock;
 242         spinlock_t voice_lock;
 243
 244         struct snd_ac97 *ac97;
 245         struct snd_pcm *pcm;
 246
 247         struct emu10k1x_voice voices[3];
 248         struct emu10k1x_voice capture_voice;
 249         u32 spdif_bits[3]; // SPDIF out setup
 250
 251         struct snd_dma_buffer dma_buffer;
 252
 253         struct emu10k1x_midi midi;
 254 };
 255
 256 /* hardware definition */
 257 static struct snd_pcm_hardware snd_emu10k1x_playback_hw = {
 258         .info =                 (SNDRV_PCM_INFO_MMAP |
 259                                  SNDRV_PCM_INFO_INTERLEAVED |
 260                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 261                                  SNDRV_PCM_INFO_MMAP_VALID),
 262         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 263         .rates =                SNDRV_PCM_RATE_48000,
 264         .rate_min =             48000,
 265         .rate_max =             48000,
 266         .channels_min =         2,
 267         .channels_max =         2,
 268         .buffer_bytes_max =     (32*1024),
 269         .period_bytes_min =     64,
 270         .period_bytes_max =     (16*1024),
 271         .periods_min =          2,
 272         .periods_max =          8,
 273         .fifo_size =            0,
 274 };
 275
 276 static struct snd_pcm_hardware snd_emu10k1x_capture_hw = {
 277         .info =                 (SNDRV_PCM_INFO_MMAP |
 278                                  SNDRV_PCM_INFO_INTERLEAVED |
 279                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 280                                  SNDRV_PCM_INFO_MMAP_VALID),
 281         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 282         .rates =                SNDRV_PCM_RATE_48000,
 283         .rate_min =             48000,
 284         .rate_max =             48000,
 285         .channels_min =         2,
 286         .channels_max =         2,
 287         .buffer_bytes_max =     (32*1024),
 288         .period_bytes_min =     64,
 289         .period_bytes_max =     (16*1024),
 290         .periods_min =          2,
 291         .periods_max =          2,
 292         .fifo_size =            0,
 293 };
 294
 295 static unsigned int snd_emu10k1x_ptr_read(struct emu10k1x * emu,
 296                                           unsigned int reg,
 297                                           unsigned int chn)
 298 {
 299         unsigned long flags;
 300         unsigned int regptr, val;
 301
 302         regptr = (reg << 16) | chn;
 303
 304         spin_lock_irqsave(&emu->emu_lock, flags);
 305         outl(regptr, emu->port + PTR);
 306         val = inl(emu->port + DATA);
 307         spin_unlock_irqrestore(&emu->emu_lock, flags);
 308         return val;
 309 }
 310
 311 static void snd_emu10k1x_ptr_write(struct emu10k1x *emu,
 312                                    unsigned int reg,
 313                                    unsigned int chn,
 314                                    unsigned int data)
 315 {
 316         unsigned int regptr;
 317         unsigned long flags;
 318
 319         regptr = (reg << 16) | chn;
 320
 321         spin_lock_irqsave(&emu->emu_lock, flags);
 322         outl(regptr, emu->port + PTR);
 323         outl(data, emu->port + DATA);
 324         spin_unlock_irqrestore(&emu->emu_lock, flags);
 325 }
 326
 327 static void snd_emu10k1x_intr_enable(struct emu10k1x *emu, unsigned int intrenb)
 328 {
 329         unsigned long flags;
 330         unsigned int enable;
 331
 332         spin_lock_irqsave(&emu->emu_lock, flags);
 333         enable = inl(emu->port + INTE) | intrenb;
 334         outl(enable, emu->port + INTE);
 335         spin_unlock_irqrestore(&emu->emu_lock, flags);
 336 }
 337
 338 static void snd_emu10k1x_intr_disable(struct emu10k1x *emu, unsigned int intrenb)
 339 {
 340         unsigned long flags;
 341         unsigned int enable;
 342
 343         spin_lock_irqsave(&emu->emu_lock, flags);
 344         enable = inl(emu->port + INTE) & ~intrenb;
 345         outl(enable, emu->port + INTE);
 346         spin_unlock_irqrestore(&emu->emu_lock, flags);
 347 }
 348
 349 static void snd_emu10k1x_gpio_write(struct emu10k1x *emu, unsigned int value)
 350 {
 351         unsigned long flags;
 352
 353         spin_lock_irqsave(&emu->emu_lock, flags);
 354         outl(value, emu->port + GPIO);
 355         spin_unlock_irqrestore(&emu->emu_lock, flags);
 356 }
 357
 358 static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime)
 359 {
 360         kfree(runtime->private_data);
 361 }
 362
 363 static void snd_emu10k1x_pcm_interrupt(struct emu10k1x *emu, struct emu10k1x_voice *voice)
 364 {
 365         struct emu10k1x_pcm *epcm;
 366
 367         if ((epcm = voice->epcm) == NULL)
 368                 return;
 369         if (epcm->substream == NULL)
 370                 return;
 371 #if 0
 372         snd_printk(KERN_INFO "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
 373                    epcm->substream->ops->pointer(epcm->substream),
 374                    snd_pcm_lib_period_bytes(epcm->substream),
 375                    snd_pcm_lib_buffer_bytes(epcm->substream));
 376 #endif
 377         snd_pcm_period_elapsed(epcm->substream);
 378 }
 379
 380 /* open callback */
 381 static int snd_emu10k1x_playback_open(struct snd_pcm_substream *substream)
 382 {
 383         struct emu10k1x *chip = snd_pcm_substream_chip(substream);
 384         struct emu10k1x_pcm *epcm;
 385         struct snd_pcm_runtime *runtime = substream->runtime;
 386         int err;
 387
 388         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) {
 389                 return err;
 390         }
 391         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
 392                 return err;
 393
 394         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 395         if (epcm == NULL)
 396                 return -ENOMEM;
 397         epcm->emu = chip;
 398         epcm->substream = substream;
 399
 400         runtime->private_data = epcm;
 401         runtime->private_free = snd_emu10k1x_pcm_free_substream;
 402
 403         runtime->hw = snd_emu10k1x_playback_hw;
 404
 405         return 0;
 406 }
 407
 408 /* close callback */
 409 static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream)
 410 {
 411         return 0;
 412 }
 413
 414 /* hw_params callback */
 415 static int snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream *substream,
 416                                       struct snd_pcm_hw_params *hw_params)
 417 {
 418         struct snd_pcm_runtime *runtime = substream->runtime;
 419         struct emu10k1x_pcm *epcm = runtime->private_data;
 420
 421         if (! epcm->voice) {
 422                 epcm->voice = &epcm->emu->voices[substream->pcm->device];
 423                 epcm->voice->use = 1;
 424                 epcm->voice->epcm = epcm;
 425         }
 426
 427         return snd_pcm_lib_malloc_pages(substream,
 428                                         params_buffer_bytes(hw_params));
 429 }
 430
 431 /* hw_free callback */
 432 static int snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream *substream)
 433 {
 434         struct snd_pcm_runtime *runtime = substream->runtime;
 435         struct emu10k1x_pcm *epcm;
 436
 437         if (runtime->private_data == NULL)
 438                 return 0;
 439
 440         epcm = runtime->private_data;
 441
 442         if (epcm->voice) {
 443                 epcm->voice->use = 0;
 444                 epcm->voice->epcm = NULL;
 445                 epcm->voice = NULL;
 446         }
 447
 448         return snd_pcm_lib_free_pages(substream);
 449 }
 450
 451 /* prepare callback */
 452 static int snd_emu10k1x_pcm_prepare(struct snd_pcm_substream *substream)
 453 {
 454         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 455         struct snd_pcm_runtime *runtime = substream->runtime;
 456         struct emu10k1x_pcm *epcm = runtime->private_data;
 457         int voice = epcm->voice->number;
 458         u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice);
 459         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
 460         int i;
 461
 462         for(i = 0; i < runtime->periods; i++) {
 463                 *table_base++=runtime->dma_addr+(i*period_size_bytes);
 464                 *table_base++=period_size_bytes<<16;
 465         }
 466
 467         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice);
 468         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19);
 469         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0);
 470         snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0);
 471         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0);
 472         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0);
 473         snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr);
 474
 475         snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16);
 476
 477         return 0;
 478 }
 479
 480 /* trigger callback */
 481 static int snd_emu10k1x_pcm_trigger(struct snd_pcm_substream *substream,
 482                                     int cmd)
 483 {
 484         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 485         struct snd_pcm_runtime *runtime = substream->runtime;
 486         struct emu10k1x_pcm *epcm = runtime->private_data;
 487         int channel = epcm->voice->number;
 488         int result = 0;
 489
 490 //      snd_printk(KERN_INFO "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n", (int)emu, cmd, (int)substream->ops->pointer(substream));
 491
 492         switch (cmd) {
 493         case SNDRV_PCM_TRIGGER_START:
 494                 if(runtime->periods == 2)
 495                         snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
 496                 else
 497                         snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel);
 498                 epcm->running = 1;
 499                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel));
 500                 break;
 501         case SNDRV_PCM_TRIGGER_STOP:
 502                 epcm->running = 0;
 503                 snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
 504                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel));
 505                 break;
 506         default:
 507                 result = -EINVAL;
 508                 break;
 509         }
 510         return result;
 511 }
 512
 513 /* pointer callback */
 514 static snd_pcm_uframes_t
 515 snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream)
 516 {
 517         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 518         struct snd_pcm_runtime *runtime = substream->runtime;
 519         struct emu10k1x_pcm *epcm = runtime->private_data;
 520         int channel = epcm->voice->number;
 521         snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0;
 522
 523         if (!epcm->running)
 524                 return 0;
 525
 526         ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
 527         ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
 528         ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
 529
 530         if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size))
 531                 return 0;
 532
 533         if (ptr3 != ptr4)
 534                 ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
 535         ptr2 = bytes_to_frames(runtime, ptr1);
 536         ptr2 += (ptr4 >> 3) * runtime->period_size;
 537         ptr = ptr2;
 538
 539         if (ptr >= runtime->buffer_size)
 540                 ptr -= runtime->buffer_size;
 541
 542         return ptr;
 543 }
 544
 545 /* operators */
 546 static struct snd_pcm_ops snd_emu10k1x_playback_ops = {
 547         .open =        snd_emu10k1x_playback_open,
 548         .close =       snd_emu10k1x_playback_close,
 549         .ioctl =       snd_pcm_lib_ioctl,
 550         .hw_params =   snd_emu10k1x_pcm_hw_params,
 551         .hw_free =     snd_emu10k1x_pcm_hw_free,
 552         .prepare =     snd_emu10k1x_pcm_prepare,
 553         .trigger =     snd_emu10k1x_pcm_trigger,
 554         .pointer =     snd_emu10k1x_pcm_pointer,
 555 };
 556
 557 /* open_capture callback */
 558 static int snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream *substream)
 559 {
 560         struct emu10k1x *chip = snd_pcm_substream_chip(substream);
 561         struct emu10k1x_pcm *epcm;
 562         struct snd_pcm_runtime *runtime = substream->runtime;
 563         int err;
 564
 565         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 566                 return err;
 567         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
 568                 return err;
 569
 570         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 571         if (epcm == NULL)
 572                 return -ENOMEM;
 573
 574         epcm->emu = chip;
 575         epcm->substream = substream;
 576
 577         runtime->private_data = epcm;
 578         runtime->private_free = snd_emu10k1x_pcm_free_substream;
 579
 580         runtime->hw = snd_emu10k1x_capture_hw;
 581
 582         return 0;
 583 }
 584
 585 /* close callback */
 586 static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream)
 587 {
 588         return 0;
 589 }
 590
 591 /* hw_params callback */
 592 static int snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream *substream,
 593                                               struct snd_pcm_hw_params *hw_params)
 594 {
 595         struct snd_pcm_runtime *runtime = substream->runtime;
 596         struct emu10k1x_pcm *epcm = runtime->private_data;
 597
 598         if (! epcm->voice) {
 599                 if (epcm->emu->capture_voice.use)
 600                         return -EBUSY;
 601                 epcm->voice = &epcm->emu->capture_voice;
 602                 epcm->voice->epcm = epcm;
 603                 epcm->voice->use = 1;
 604         }
 605
 606         return snd_pcm_lib_malloc_pages(substream,
 607                                         params_buffer_bytes(hw_params));
 608 }
 609
 610 /* hw_free callback */
 611 static int snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream *substream)
 612 {
 613         struct snd_pcm_runtime *runtime = substream->runtime;
 614
 615         struct emu10k1x_pcm *epcm;
 616
 617         if (runtime->private_data == NULL)
 618                 return 0;
 619         epcm = runtime->private_data;
 620
 621         if (epcm->voice) {
 622                 epcm->voice->use = 0;
 623                 epcm->voice->epcm = NULL;
 624                 epcm->voice = NULL;
 625         }
 626
 627         return snd_pcm_lib_free_pages(substream);
 628 }
 629
 630 /* prepare capture callback */
 631 static int snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream *substream)
 632 {
 633         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 634         struct snd_pcm_runtime *runtime = substream->runtime;
 635
 636         snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr);
 637         snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
 638         snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0);
 639         snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0);
 640
 641         return 0;
 642 }
 643
 644 /* trigger_capture callback */
 645 static int snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream *substream,
 646                                             int cmd)
 647 {
 648         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 649         struct snd_pcm_runtime *runtime = substream->runtime;
 650         struct emu10k1x_pcm *epcm = runtime->private_data;
 651         int result = 0;
 652
 653         switch (cmd) {
 654         case SNDRV_PCM_TRIGGER_START:
 655                 snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP |
 656                                          INTE_CAP_0_HALF_LOOP);
 657                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE);
 658                 epcm->running = 1;
 659                 break;
 660         case SNDRV_PCM_TRIGGER_STOP:
 661                 epcm->running = 0;
 662                 snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP |
 663                                           INTE_CAP_0_HALF_LOOP);
 664                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE));
 665                 break;
 666         default:
 667                 result = -EINVAL;
 668                 break;
 669         }
 670         return result;
 671 }
 672
 673 /* pointer_capture callback */
 674 static snd_pcm_uframes_t
 675 snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream)
 676 {
 677         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 678         struct snd_pcm_runtime *runtime = substream->runtime;
 679         struct emu10k1x_pcm *epcm = runtime->private_data;
 680         snd_pcm_uframes_t ptr;
 681
 682         if (!epcm->running)
 683                 return 0;
 684
 685         ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0));
 686         if (ptr >= runtime->buffer_size)
 687                 ptr -= runtime->buffer_size;
 688
 689         return ptr;
 690 }
 691
 692 static struct snd_pcm_ops snd_emu10k1x_capture_ops = {
 693         .open =        snd_emu10k1x_pcm_open_capture,
 694         .close =       snd_emu10k1x_pcm_close_capture,
 695         .ioctl =       snd_pcm_lib_ioctl,
 696         .hw_params =   snd_emu10k1x_pcm_hw_params_capture,
 697         .hw_free =     snd_emu10k1x_pcm_hw_free_capture,
 698         .prepare =     snd_emu10k1x_pcm_prepare_capture,
 699         .trigger =     snd_emu10k1x_pcm_trigger_capture,
 700         .pointer =     snd_emu10k1x_pcm_pointer_capture,
 701 };
 702
 703 static unsigned short snd_emu10k1x_ac97_read(struct snd_ac97 *ac97,
 704                                              unsigned short reg)
 705 {
 706         struct emu10k1x *emu = ac97->private_data;
 707         unsigned long flags;
 708         unsigned short val;
 709
 710         spin_lock_irqsave(&emu->emu_lock, flags);
 711         outb(reg, emu->port + AC97ADDRESS);
 712         val = inw(emu->port + AC97DATA);
 713         spin_unlock_irqrestore(&emu->emu_lock, flags);
 714         return val;
 715 }
 716
 717 static void snd_emu10k1x_ac97_write(struct snd_ac97 *ac97,
 718                                     unsigned short reg, unsigned short val)
 719 {
 720         struct emu10k1x *emu = ac97->private_data;
 721         unsigned long flags;
 722
 723         spin_lock_irqsave(&emu->emu_lock, flags);
 724         outb(reg, emu->port + AC97ADDRESS);
 725         outw(val, emu->port + AC97DATA);
 726         spin_unlock_irqrestore(&emu->emu_lock, flags);
 727 }
 728
 729 static int snd_emu10k1x_ac97(struct emu10k1x *chip)
 730 {
 731         struct snd_ac97_bus *pbus;
 732         struct snd_ac97_template ac97;
 733         int err;
 734         static struct snd_ac97_bus_ops ops = {
 735                 .write = snd_emu10k1x_ac97_write,
 736                 .read = snd_emu10k1x_ac97_read,
 737         };
 738
 739         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
 740                 return err;
 741         pbus->no_vra = 1; /* we don't need VRA */
 742
 743         memset(&ac97, 0, sizeof(ac97));
 744         ac97.private_data = chip;
 745         ac97.scaps = AC97_SCAP_NO_SPDIF;
 746         return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
 747 }
 748
 749 static int snd_emu10k1x_free(struct emu10k1x *chip)
 750 {
 751         snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0);
 752         // disable interrupts
 753         outl(0, chip->port + INTE);
 754         // disable audio
 755         outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
 756
 757         // release the i/o port
 758         release_and_free_resource(chip->res_port);
 759
 760         // release the irq
 761         if (chip->irq >= 0)
 762                 free_irq(chip->irq, chip);
 763
 764         // release the DMA
 765         if (chip->dma_buffer.area) {
 766                 snd_dma_free_pages(&chip->dma_buffer);
 767         }
 768
 769         pci_disable_device(chip->pci);
 770
 771         // release the data
 772         kfree(chip);
 773         return 0;
 774 }
 775
 776 static int snd_emu10k1x_dev_free(struct snd_device *device)
 777 {
 778         struct emu10k1x *chip = device->device_data;
 779         return snd_emu10k1x_free(chip);
 780 }
 781
 782 static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id)
 783 {
 784         unsigned int status;
 785
 786         struct emu10k1x *chip = dev_id;
 787         struct emu10k1x_voice *pvoice = chip->voices;
 788         int i;
 789         int mask;
 790
 791         status = inl(chip->port + IPR);
 792
 793         if (! status)
 794                 return IRQ_NONE;
 795
 796         // capture interrupt
 797         if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
 798                 struct emu10k1x_voice *pvoice = &chip->capture_voice;
 799                 if (pvoice->use)
 800                         snd_emu10k1x_pcm_interrupt(chip, pvoice);
 801                 else
 802                         snd_emu10k1x_intr_disable(chip,
 803                                                   INTE_CAP_0_LOOP |
 804                                                   INTE_CAP_0_HALF_LOOP);
 805         }
 806
 807         mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP;
 808         for (i = 0; i < 3; i++) {
 809                 if (status & mask) {
 810                         if (pvoice->use)
 811                                 snd_emu10k1x_pcm_interrupt(chip, pvoice);
 812                         else
 813                                 snd_emu10k1x_intr_disable(chip, mask);
 814                 }
 815                 pvoice++;
 816                 mask <<= 1;
 817         }
 818
 819         if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
 820                 if (chip->midi.interrupt)
 821                         chip->midi.interrupt(chip, status);
 822                 else
 823                         snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
 824         }
 825
 826         // acknowledge the interrupt if necessary
 827         outl(status, chip->port + IPR);
 828
 829         // snd_printk(KERN_INFO "interrupt %08x\n", status);
 830         return IRQ_HANDLED;
 831 }
 832
 833 static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm)
 834 {
 835         struct snd_pcm *pcm;
 836         int err;
 837         int capture = 0;
 838
 839         if (rpcm)
 840                 *rpcm = NULL;
 841         if (device == 0)
 842                 capture = 1;
 843
 844         if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
 845                 return err;
 846
 847         pcm->private_data = emu;
 848
 849         switch(device) {
 850         case 0:
 851                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
 852                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
 853                 break;
 854         case 1:
 855         case 2:
 856                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
 857                 break;
 858         }
 859
 860         pcm->info_flags = 0;
 861         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 862         switch(device) {
 863         case 0:
 864                 strcpy(pcm->name, "EMU10K1X Front");
 865                 break;
 866         case 1:
 867                 strcpy(pcm->name, "EMU10K1X Rear");
 868                 break;
 869         case 2:
 870                 strcpy(pcm->name, "EMU10K1X Center/LFE");
 871                 break;
 872         }
 873         emu->pcm = pcm;
 874
 875         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 876                                               snd_dma_pci_data(emu->pci),
 877                                               32*1024, 32*1024);
 878
 879         if (rpcm)
 880                 *rpcm = pcm;
 881
 882         return 0;
 883 }
 884
 885 static int __devinit snd_emu10k1x_create(struct snd_card *card,
 886                                          struct pci_dev *pci,
 887                                          struct emu10k1x **rchip)
 888 {
 889         struct emu10k1x *chip;
 890         int err;
 891         int ch;
 892         static struct snd_device_ops ops = {
 893                 .dev_free = snd_emu10k1x_dev_free,
 894         };
 895
 896         *rchip = NULL;
 897
 898         if ((err = pci_enable_device(pci)) < 0)
 899                 return err;
 900         if (pci_set_dma_mask(pci, DMA_28BIT_MASK) < 0 ||
 901             pci_set_consistent_dma_mask(pci, DMA_28BIT_MASK) < 0) {
 902                 snd_printk(KERN_ERR "error to set 28bit mask DMA\n");
 903                 pci_disable_device(pci);
 904                 return -ENXIO;
 905         }
 906
 907         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 908         if (chip == NULL) {
 909                 pci_disable_device(pci);
 910                 return -ENOMEM;
 911         }
 912
 913         chip->card = card;
 914         chip->pci = pci;
 915         chip->irq = -1;
 916
 917         spin_lock_init(&chip->emu_lock);
 918         spin_lock_init(&chip->voice_lock);
 919
 920         chip->port = pci_resource_start(pci, 0);
 921         if ((chip->res_port = request_region(chip->port, 8,
 922                                              "EMU10K1X")) == NULL) {
 923                 snd_printk(KERN_ERR "emu10k1x: cannot allocate the port 0x%lx\n", chip->port);
 924                 snd_emu10k1x_free(chip);
 925                 return -EBUSY;
 926         }
 927
 928         if (request_irq(pci->irq, snd_emu10k1x_interrupt,
 929                         IRQF_SHARED, "EMU10K1X", chip)) {
 930                 snd_printk(KERN_ERR "emu10k1x: cannot grab irq %d\n", pci->irq);
 931                 snd_emu10k1x_free(chip);
 932                 return -EBUSY;
 933         }
 934         chip->irq = pci->irq;
 935
 936         if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
 937                                4 * 1024, &chip->dma_buffer) < 0) {
 938                 snd_emu10k1x_free(chip);
 939                 return -ENOMEM;
 940         }
 941
 942         pci_set_master(pci);
 943         /* read revision & serial */
 944         chip->revision = pci->revision;
 945         pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
 946         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
 947         snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
 948                    chip->revision, chip->serial);
 949
 950         outl(0, chip->port + INTE);
 951
 952         for(ch = 0; ch < 3; ch++) {
 953                 chip->voices[ch].emu = chip;
 954                 chip->voices[ch].number = ch;
 955         }
 956
 957         /*
 958          *  Init to 0x02109204 :
 959          *  Clock accuracy    = 0     (1000ppm)
 960          *  Sample Rate       = 2     (48kHz)
 961          *  Audio Channel     = 1     (Left of 2)
 962          *  Source Number     = 0     (Unspecified)
 963          *  Generation Status = 1     (Original for Cat Code 12)
 964          *  Cat Code          = 12    (Digital Signal Mixer)
 965          *  Mode              = 0     (Mode 0)
 966          *  Emphasis          = 0     (None)
 967          *  CP                = 1     (Copyright unasserted)
 968          *  AN                = 0     (Audio data)
 969          *  P                 = 0     (Consumer)
 970          */
 971         snd_emu10k1x_ptr_write(chip, SPCS0, 0,
 972                                chip->spdif_bits[0] =
 973                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 974                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 975                                SPCS_GENERATIONSTATUS | 0x00001200 |
 976                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
 977         snd_emu10k1x_ptr_write(chip, SPCS1, 0,
 978                                chip->spdif_bits[1] =
 979                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 980                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 981                                SPCS_GENERATIONSTATUS | 0x00001200 |
 982                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
 983         snd_emu10k1x_ptr_write(chip, SPCS2, 0,
 984                                chip->spdif_bits[2] =
 985                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 986                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 987                                SPCS_GENERATIONSTATUS | 0x00001200 |
 988                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
 989
 990         snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
 991         snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
 992         snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
 993
 994         outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
 995
 996         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
 997                                   chip, &ops)) < 0) {
 998                 snd_emu10k1x_free(chip);
 999                 return err;
1000         }
1001         *rchip = chip;
1002         return 0;
1003 }
1004
1005 static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry,
1006                                        struct snd_info_buffer *buffer)
1007 {
1008         struct emu10k1x *emu = entry->private_data;
1009         unsigned long value,value1,value2;
1010         unsigned long flags;
1011         int i;
1012
1013         snd_iprintf(buffer, "Registers:\n\n");
1014         for(i = 0; i < 0x20; i+=4) {
1015                 spin_lock_irqsave(&emu->emu_lock, flags);
1016                 value = inl(emu->port + i);
1017                 spin_unlock_irqrestore(&emu->emu_lock, flags);
1018                 snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1019         }
1020         snd_iprintf(buffer, "\nRegisters\n\n");
1021         for(i = 0; i <= 0x48; i++) {
1022                 value = snd_emu10k1x_ptr_read(emu, i, 0);
1023                 if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1024                         value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1025                         value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1026                         snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1027                 } else {
1028                         snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1029                 }
1030         }
1031 }
1032
1033 static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry,
1034                                         struct snd_info_buffer *buffer)
1035 {
1036         struct emu10k1x *emu = entry->private_data;
1037         char line[64];
1038         unsigned int reg, channel_id , val;
1039
1040         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1041                 if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1042                         continue;
1043
1044                 if ((reg < 0x49) && (reg >= 0) && (val <= 0xffffffff)
1045                     && (channel_id >= 0) && (channel_id <= 2) )
1046                         snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1047         }
1048 }
1049
1050 static int __devinit snd_emu10k1x_proc_init(struct emu10k1x * emu)
1051 {
1052         struct snd_info_entry *entry;
1053
1054         if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
1055                 snd_info_set_text_ops(entry, emu, snd_emu10k1x_proc_reg_read);
1056                 entry->c.text.write = snd_emu10k1x_proc_reg_write;
1057                 entry->mode |= S_IWUSR;
1058                 entry->private_data = emu;
1059         }
1060
1061         return 0;
1062 }
1063
1064 #define snd_emu10k1x_shared_spdif_info  snd_ctl_boolean_mono_info
1065
1066 static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1067                                          struct snd_ctl_elem_value *ucontrol)
1068 {
1069         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1070
1071         ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1072
1073         return 0;
1074 }
1075
1076 static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1077                                          struct snd_ctl_elem_value *ucontrol)
1078 {
1079         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1080         unsigned int val;
1081         int change = 0;
1082
1083         val = ucontrol->value.integer.value[0] ;
1084
1085         if (val) {
1086                 // enable spdif output
1087                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1088                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1089                 snd_emu10k1x_gpio_write(emu, 0x1000);
1090         } else {
1091                 // disable spdif output
1092                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1093                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1094                 snd_emu10k1x_gpio_write(emu, 0x1080);
1095         }
1096         return change;
1097 }
1098
1099 static struct snd_kcontrol_new snd_emu10k1x_shared_spdif __devinitdata =
1100 {
1101         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
1102         .name =         "Analog/Digital Output Jack",
1103         .info =         snd_emu10k1x_shared_spdif_info,
1104         .get =          snd_emu10k1x_shared_spdif_get,
1105         .put =          snd_emu10k1x_shared_spdif_put
1106 };
1107
1108 static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1109 {
1110         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1111         uinfo->count = 1;
1112         return 0;
1113 }
1114
1115 static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1116                                   struct snd_ctl_elem_value *ucontrol)
1117 {
1118         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1119         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1120
1121         ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1122         ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1123         ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1124         ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1125         return 0;
1126 }
1127
1128 static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1129                                        struct snd_ctl_elem_value *ucontrol)
1130 {
1131         ucontrol->value.iec958.status[0] = 0xff;
1132         ucontrol->value.iec958.status[1] = 0xff;
1133         ucontrol->value.iec958.status[2] = 0xff;
1134         ucontrol->value.iec958.status[3] = 0xff;
1135         return 0;
1136 }
1137
1138 static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1139                                   struct snd_ctl_elem_value *ucontrol)
1140 {
1141         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1142         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1143         int change;
1144         unsigned int val;
1145
1146         val = (ucontrol->value.iec958.status[0] << 0) |
1147                 (ucontrol->value.iec958.status[1] << 8) |
1148                 (ucontrol->value.iec958.status[2] << 16) |
1149                 (ucontrol->value.iec958.status[3] << 24);
1150         change = val != emu->spdif_bits[idx];
1151         if (change) {
1152                 snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1153                 emu->spdif_bits[idx] = val;
1154         }
1155         return change;
1156 }
1157
1158 static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1159 {
1160         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
1161         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1162         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1163         .count =        3,
1164         .info =         snd_emu10k1x_spdif_info,
1165         .get =          snd_emu10k1x_spdif_get_mask
1166 };
1167
1168 static struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1169 {
1170         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1171         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1172         .count =        3,
1173         .info =         snd_emu10k1x_spdif_info,
1174         .get =          snd_emu10k1x_spdif_get,
1175         .put =          snd_emu10k1x_spdif_put
1176 };
1177
1178 static int __devinit snd_emu10k1x_mixer(struct emu10k1x *emu)
1179 {
1180         int err;
1181         struct snd_kcontrol *kctl;
1182         struct snd_card *card = emu->card;
1183
1184         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1185                 return -ENOMEM;
1186         if ((err = snd_ctl_add(card, kctl)))
1187                 return err;
1188         if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1189                 return -ENOMEM;
1190         if ((err = snd_ctl_add(card, kctl)))
1191                 return err;
1192         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1193                 return -ENOMEM;
1194         if ((err = snd_ctl_add(card, kctl)))
1195                 return err;
1196
1197         return 0;
1198 }
1199
1200 #define EMU10K1X_MIDI_MODE_INPUT        (1<<0)
1201 #define EMU10K1X_MIDI_MODE_OUTPUT       (1<<1)
1202
1203 static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1204 {
1205         return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1206 }
1207
1208 static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1209 {
1210         snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1211 }
1212
1213 #define mpu401_write_data(emu, mpu, data)       mpu401_write(emu, mpu, data, 0)
1214 #define mpu401_write_cmd(emu, mpu, data)        mpu401_write(emu, mpu, data, 1)
1215 #define mpu401_read_data(emu, mpu)              mpu401_read(emu, mpu, 0)
1216 #define mpu401_read_stat(emu, mpu)              mpu401_read(emu, mpu, 1)
1217
1218 #define mpu401_input_avail(emu,mpu)     (!(mpu401_read_stat(emu,mpu) & 0x80))
1219 #define mpu401_output_ready(emu,mpu)    (!(mpu401_read_stat(emu,mpu) & 0x40))
1220
1221 #define MPU401_RESET            0xff
1222 #define MPU401_ENTER_UART       0x3f
1223 #define MPU401_ACK              0xfe
1224
1225 static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1226 {
1227         int timeout = 100000;
1228         for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1229                 mpu401_read_data(emu, mpu);
1230 #ifdef CONFIG_SND_DEBUG
1231         if (timeout <= 0)
1232                 snd_printk(KERN_ERR "cmd: clear rx timeout (status = 0x%x)\n", mpu401_read_stat(emu, mpu));
1233 #endif
1234 }
1235
1236 /*
1237
1238  */
1239
1240 static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1241                                        struct emu10k1x_midi *midi, unsigned int status)
1242 {
1243         unsigned char byte;
1244
1245         if (midi->rmidi == NULL) {
1246                 snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1247                 return;
1248         }
1249
1250         spin_lock(&midi->input_lock);
1251         if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1252                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1253                         mpu401_clear_rx(emu, midi);
1254                 } else {
1255                         byte = mpu401_read_data(emu, midi);
1256                         if (midi->substream_input)
1257                                 snd_rawmidi_receive(midi->substream_input, &byte, 1);
1258                 }
1259         }
1260         spin_unlock(&midi->input_lock);
1261
1262         spin_lock(&midi->output_lock);
1263         if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1264                 if (midi->substream_output &&
1265                     snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1266                         mpu401_write_data(emu, midi, byte);
1267                 } else {
1268                         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1269                 }
1270         }
1271         spin_unlock(&midi->output_lock);
1272 }
1273
1274 static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1275 {
1276         do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1277 }
1278
1279 static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1280                                   struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1281 {
1282         unsigned long flags;
1283         int timeout, ok;
1284
1285         spin_lock_irqsave(&midi->input_lock, flags);
1286         mpu401_write_data(emu, midi, 0x00);
1287         /* mpu401_clear_rx(emu, midi); */
1288
1289         mpu401_write_cmd(emu, midi, cmd);
1290         if (ack) {
1291                 ok = 0;
1292                 timeout = 10000;
1293                 while (!ok && timeout-- > 0) {
1294                         if (mpu401_input_avail(emu, midi)) {
1295                                 if (mpu401_read_data(emu, midi) == MPU401_ACK)
1296                                         ok = 1;
1297                         }
1298                 }
1299                 if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1300                         ok = 1;
1301         } else {
1302                 ok = 1;
1303         }
1304         spin_unlock_irqrestore(&midi->input_lock, flags);
1305         if (!ok) {
1306                 snd_printk(KERN_ERR "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1307                            cmd, emu->port,
1308                            mpu401_read_stat(emu, midi),
1309                            mpu401_read_data(emu, midi));
1310                 return 1;
1311         }
1312         return 0;
1313 }
1314
1315 static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
1316 {
1317         struct emu10k1x *emu;
1318         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1319         unsigned long flags;
1320
1321         emu = midi->emu;
1322         snd_assert(emu, return -ENXIO);
1323         spin_lock_irqsave(&midi->open_lock, flags);
1324         midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1325         midi->substream_input = substream;
1326         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1327                 spin_unlock_irqrestore(&midi->open_lock, flags);
1328                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1329                         goto error_out;
1330                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1331                         goto error_out;
1332         } else {
1333                 spin_unlock_irqrestore(&midi->open_lock, flags);
1334         }
1335         return 0;
1336
1337 error_out:
1338         return -EIO;
1339 }
1340
1341 static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1342 {
1343         struct emu10k1x *emu;
1344         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1345         unsigned long flags;
1346
1347         emu = midi->emu;
1348         snd_assert(emu, return -ENXIO);
1349         spin_lock_irqsave(&midi->open_lock, flags);
1350         midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
1351         midi->substream_output = substream;
1352         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1353                 spin_unlock_irqrestore(&midi->open_lock, flags);
1354                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1355                         goto error_out;
1356                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1357                         goto error_out;
1358         } else {
1359                 spin_unlock_irqrestore(&midi->open_lock, flags);
1360         }
1361         return 0;
1362
1363 error_out:
1364         return -EIO;
1365 }
1366
1367 static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
1368 {
1369         struct emu10k1x *emu;
1370         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1371         unsigned long flags;
1372         int err = 0;
1373
1374         emu = midi->emu;
1375         snd_assert(emu, return -ENXIO);
1376         spin_lock_irqsave(&midi->open_lock, flags);
1377         snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1378         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1379         midi->substream_input = NULL;
1380         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1381                 spin_unlock_irqrestore(&midi->open_lock, flags);
1382                 err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1383         } else {
1384                 spin_unlock_irqrestore(&midi->open_lock, flags);
1385         }
1386         return err;
1387 }
1388
1389 static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1390 {
1391         struct emu10k1x *emu;
1392         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1393         unsigned long flags;
1394         int err = 0;
1395
1396         emu = midi->emu;
1397         snd_assert(emu, return -ENXIO);
1398         spin_lock_irqsave(&midi->open_lock, flags);
1399         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1400         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1401         midi->substream_output = NULL;
1402         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1403                 spin_unlock_irqrestore(&midi->open_lock, flags);
1404                 err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1405         } else {
1406                 spin_unlock_irqrestore(&midi->open_lock, flags);
1407         }
1408         return err;
1409 }
1410
1411 static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1412 {
1413         struct emu10k1x *emu;
1414         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1415         emu = midi->emu;
1416         snd_assert(emu, return);
1417
1418         if (up)
1419                 snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1420         else
1421                 snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1422 }
1423
1424 static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1425 {
1426         struct emu10k1x *emu;
1427         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1428         unsigned long flags;
1429
1430         emu = midi->emu;
1431         snd_assert(emu, return);
1432
1433         if (up) {
1434                 int max = 4;
1435                 unsigned char byte;
1436
1437                 /* try to send some amount of bytes here before interrupts */
1438                 spin_lock_irqsave(&midi->output_lock, flags);
1439                 while (max > 0) {
1440                         if (mpu401_output_ready(emu, midi)) {
1441                                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1442                                     snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1443                                         /* no more data */
1444                                         spin_unlock_irqrestore(&midi->output_lock, flags);
1445                                         return;
1446                                 }
1447                                 mpu401_write_data(emu, midi, byte);
1448                                 max--;
1449                         } else {
1450                                 break;
1451                         }
1452                 }
1453                 spin_unlock_irqrestore(&midi->output_lock, flags);
1454                 snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1455         } else {
1456                 snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1457         }
1458 }
1459
1460 /*
1461
1462  */
1463
1464 static struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1465 {
1466         .open =         snd_emu10k1x_midi_output_open,
1467         .close =        snd_emu10k1x_midi_output_close,
1468         .trigger =      snd_emu10k1x_midi_output_trigger,
1469 };
1470
1471 static struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1472 {
1473         .open =         snd_emu10k1x_midi_input_open,
1474         .close =        snd_emu10k1x_midi_input_close,
1475         .trigger =      snd_emu10k1x_midi_input_trigger,
1476 };
1477
1478 static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1479 {
1480         struct emu10k1x_midi *midi = rmidi->private_data;
1481         midi->interrupt = NULL;
1482         midi->rmidi = NULL;
1483 }
1484
1485 static int __devinit emu10k1x_midi_init(struct emu10k1x *emu,
1486                                         struct emu10k1x_midi *midi, int device, char *name)
1487 {
1488         struct snd_rawmidi *rmidi;
1489         int err;
1490
1491         if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1492                 return err;
1493         midi->emu = emu;
1494         spin_lock_init(&midi->open_lock);
1495         spin_lock_init(&midi->input_lock);
1496         spin_lock_init(&midi->output_lock);
1497         strcpy(rmidi->name, name);
1498         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1499         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1500         rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1501                              SNDRV_RAWMIDI_INFO_INPUT |
1502                              SNDRV_RAWMIDI_INFO_DUPLEX;
1503         rmidi->private_data = midi;
1504         rmidi->private_free = snd_emu10k1x_midi_free;
1505         midi->rmidi = rmidi;
1506         return 0;
1507 }
1508
1509 static int __devinit snd_emu10k1x_midi(struct emu10k1x *emu)
1510 {
1511         struct emu10k1x_midi *midi = &emu->midi;
1512         int err;
1513
1514         if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1515                 return err;
1516
1517         midi->tx_enable = INTE_MIDITXENABLE;
1518         midi->rx_enable = INTE_MIDIRXENABLE;
1519         midi->port = MUDATA;
1520         midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1521         midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1522         midi->interrupt = snd_emu10k1x_midi_interrupt;
1523         return 0;
1524 }
1525
1526 static int __devinit snd_emu10k1x_probe(struct pci_dev *pci,
1527                                         const struct pci_device_id *pci_id)
1528 {
1529         static int dev;
1530         struct snd_card *card;
1531         struct emu10k1x *chip;
1532         int err;
1533
1534         if (dev >= SNDRV_CARDS)
1535                 return -ENODEV;
1536         if (!enable[dev]) {
1537                 dev++;
1538                 return -ENOENT;
1539         }
1540
1541         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1542         if (card == NULL)
1543                 return -ENOMEM;
1544
1545         if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1546                 snd_card_free(card);
1547                 return err;
1548         }
1549
1550         if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) {
1551                 snd_card_free(card);
1552                 return err;
1553         }
1554         if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) {
1555                 snd_card_free(card);
1556                 return err;
1557         }
1558         if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) {
1559                 snd_card_free(card);
1560                 return err;
1561         }
1562
1563         if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1564                 snd_card_free(card);
1565                 return err;
1566         }
1567
1568         if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1569                 snd_card_free(card);
1570                 return err;
1571         }
1572
1573         if ((err = snd_emu10k1x_midi(chip)) < 0) {
1574                 snd_card_free(card);
1575                 return err;
1576         }
1577
1578         snd_emu10k1x_proc_init(chip);
1579
1580         strcpy(card->driver, "EMU10K1X");
1581         strcpy(card->shortname, "Dell Sound Blaster Live!");
1582         sprintf(card->longname, "%s at 0x%lx irq %i",
1583                 card->shortname, chip->port, chip->irq);
1584
1585         snd_card_set_dev(card, &pci->dev);
1586
1587         if ((err = snd_card_register(card)) < 0) {
1588                 snd_card_free(card);
1589                 return err;
1590         }
1591
1592         pci_set_drvdata(pci, card);
1593         dev++;
1594         return 0;
1595 }
1596
1597 static void __devexit snd_emu10k1x_remove(struct pci_dev *pci)
1598 {
1599         snd_card_free(pci_get_drvdata(pci));
1600         pci_set_drvdata(pci, NULL);
1601 }
1602
1603 // PCI IDs
1604 static struct pci_device_id snd_emu10k1x_ids[] = {
1605         { 0x1102, 0x0006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },    /* Dell OEM version (EMU10K1) */
1606         { 0, }
1607 };
1608 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1609
1610 // pci_driver definition
1611 static struct pci_driver driver = {
1612         .name = "EMU10K1X",
1613         .id_table = snd_emu10k1x_ids,
1614         .probe = snd_emu10k1x_probe,
1615         .remove = __devexit_p(snd_emu10k1x_remove),
1616 };
1617
1618 // initialization of the module
1619 static int __init alsa_card_emu10k1x_init(void)
1620 {
1621         return pci_register_driver(&driver);
1622 }
1623
1624 // clean up the module
1625 static void __exit alsa_card_emu10k1x_exit(void)
1626 {
1627         pci_unregister_driver(&driver);
1628 }
1629
1630 module_init(alsa_card_emu10k1x_init)
1631 module_exit(alsa_card_emu10k1x_exit)