sound/pci/emu10k1/emu10k1x.c

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This source file includes following definitions.
snd_emu10k1x_ptr_read
snd_emu10k1x_ptr_write
snd_emu10k1x_intr_enable
snd_emu10k1x_intr_disable
snd_emu10k1x_gpio_write
snd_emu10k1x_pcm_free_substream
snd_emu10k1x_pcm_interrupt
snd_emu10k1x_playback_open
snd_emu10k1x_playback_close
snd_emu10k1x_pcm_hw_params
snd_emu10k1x_pcm_hw_free
snd_emu10k1x_pcm_prepare
snd_emu10k1x_pcm_trigger
snd_emu10k1x_pcm_pointer
snd_emu10k1x_pcm_open_capture
snd_emu10k1x_pcm_close_capture
snd_emu10k1x_pcm_hw_params_capture
snd_emu10k1x_pcm_hw_free_capture
snd_emu10k1x_pcm_prepare_capture
snd_emu10k1x_pcm_trigger_capture
snd_emu10k1x_pcm_pointer_capture
snd_emu10k1x_ac97_read
snd_emu10k1x_ac97_write
snd_emu10k1x_ac97
snd_emu10k1x_free
snd_emu10k1x_dev_free
snd_emu10k1x_interrupt
snd_emu10k1x_pcm
snd_emu10k1x_create
snd_emu10k1x_proc_reg_read
snd_emu10k1x_proc_reg_write
snd_emu10k1x_proc_init
snd_emu10k1x_shared_spdif_get
snd_emu10k1x_shared_spdif_put
snd_emu10k1x_spdif_info
snd_emu10k1x_spdif_get
snd_emu10k1x_spdif_get_mask
snd_emu10k1x_spdif_put
snd_emu10k1x_mixer
mpu401_read
mpu401_write
mpu401_clear_rx
do_emu10k1x_midi_interrupt
snd_emu10k1x_midi_interrupt
snd_emu10k1x_midi_cmd
snd_emu10k1x_midi_input_open
snd_emu10k1x_midi_output_open
snd_emu10k1x_midi_input_close
snd_emu10k1x_midi_output_close
snd_emu10k1x_midi_input_trigger
snd_emu10k1x_midi_output_trigger
snd_emu10k1x_midi_free
emu10k1x_midi_init
snd_emu10k1x_midi
snd_emu10k1x_probe
snd_emu10k1x_remove
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
   4  *  Driver EMU10K1X chips
   5  *
   6  *  Parts of this code were adapted from audigyls.c driver which is
   7  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
   8  *
   9  *  BUGS:
  10  *    --
  11  *
  12  *  TODO:
  13  *
  14  *  Chips (SB0200 model):
  15  *    - EMU10K1X-DBQ
  16  *    - STAC 9708T
  17  */
  18 #include <linux/init.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/pci.h>
  21 #include <linux/dma-mapping.h>
  22 #include <linux/slab.h>
  23 #include <linux/module.h>
  24 #include <sound/core.h>
  25 #include <sound/initval.h>
  26 #include <sound/pcm.h>
  27 #include <sound/ac97_codec.h>
  28 #include <sound/info.h>
  29 #include <sound/rawmidi.h>
  30 
  31 MODULE_AUTHOR("Francisco Moraes <fmoraes@nc.rr.com>");
  32 MODULE_DESCRIPTION("EMU10K1X");
  33 MODULE_LICENSE("GPL");
  34 MODULE_SUPPORTED_DEVICE("{{Dell Creative Labs,SB Live!}");
  35 
  36 // module parameters (see "Module Parameters")
  37 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  38 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  39 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  40 
  41 module_param_array(index, int, NULL, 0444);
  42 MODULE_PARM_DESC(index, "Index value for the EMU10K1X soundcard.");
  43 module_param_array(id, charp, NULL, 0444);
  44 MODULE_PARM_DESC(id, "ID string for the EMU10K1X soundcard.");
  45 module_param_array(enable, bool, NULL, 0444);
  46 MODULE_PARM_DESC(enable, "Enable the EMU10K1X soundcard.");
  47 
  48 
  49 // some definitions were borrowed from emu10k1 driver as they seem to be the same
  50 /************************************************************************************************/
  51 /* PCI function 0 registers, address = <val> + PCIBASE0                                         */
  52 /************************************************************************************************/
  53 
  54 #define PTR                     0x00            /* Indexed register set pointer register        */
  55                                                 /* NOTE: The CHANNELNUM and ADDRESS words can   */
  56                                                 /* be modified independently of each other.     */
  57 
  58 #define DATA                    0x04            /* Indexed register set data register           */
  59 
  60 #define IPR                     0x08            /* Global interrupt pending register            */
  61                                                 /* Clear pending interrupts by writing a 1 to   */
  62                                                 /* the relevant bits and zero to the other bits */
  63 #define IPR_MIDITRANSBUFEMPTY   0x00000001      /* MIDI UART transmit buffer empty              */
  64 #define IPR_MIDIRECVBUFEMPTY    0x00000002      /* MIDI UART receive buffer empty               */
  65 #define IPR_CH_0_LOOP           0x00000800      /* Channel 0 loop                               */
  66 #define IPR_CH_0_HALF_LOOP      0x00000100      /* Channel 0 half loop                          */
  67 #define IPR_CAP_0_LOOP          0x00080000      /* Channel capture loop                         */
  68 #define IPR_CAP_0_HALF_LOOP     0x00010000      /* Channel capture half loop                    */
  69 
  70 #define INTE                    0x0c            /* Interrupt enable register                    */
  71 #define INTE_MIDITXENABLE       0x00000001      /* Enable MIDI transmit-buffer-empty interrupts */
  72 #define INTE_MIDIRXENABLE       0x00000002      /* Enable MIDI receive-buffer-empty interrupts  */
  73 #define INTE_CH_0_LOOP          0x00000800      /* Channel 0 loop                               */
  74 #define INTE_CH_0_HALF_LOOP     0x00000100      /* Channel 0 half loop                          */
  75 #define INTE_CAP_0_LOOP         0x00080000      /* Channel capture loop                         */
  76 #define INTE_CAP_0_HALF_LOOP    0x00010000      /* Channel capture half loop                    */
  77 
  78 #define HCFG                    0x14            /* Hardware config register                     */
  79 
  80 #define HCFG_LOCKSOUNDCACHE     0x00000008      /* 1 = Cancel bustmaster accesses to soundcache */
  81                                                 /* NOTE: This should generally never be used.   */
  82 #define HCFG_AUDIOENABLE        0x00000001      /* 0 = CODECs transmit zero-valued samples      */
  83                                                 /* Should be set to 1 when the EMU10K1 is       */
  84                                                 /* completely initialized.                      */
  85 #define GPIO                    0x18            /* Defaults: 00001080-Analog, 00001000-SPDIF.   */
  86 
  87 
  88 #define AC97DATA                0x1c            /* AC97 register set data register (16 bit)     */
  89 
  90 #define AC97ADDRESS             0x1e            /* AC97 register set address register (8 bit)   */
  91 
  92 /********************************************************************************************************/
  93 /* Emu10k1x pointer-offset register set, accessed through the PTR and DATA registers                    */
  94 /********************************************************************************************************/
  95 #define PLAYBACK_LIST_ADDR      0x00            /* Base DMA address of a list of pointers to each period/size */
  96                                                 /* One list entry: 4 bytes for DMA address, 
  97                                                  * 4 bytes for period_size << 16.
  98                                                  * One list entry is 8 bytes long.
  99                                                  * One list entry for each period in the buffer.
 100                                                  */
 101 #define PLAYBACK_LIST_SIZE      0x01            /* Size of list in bytes << 16. E.g. 8 periods -> 0x00380000  */
 102 #define PLAYBACK_LIST_PTR       0x02            /* Pointer to the current period being played */
 103 #define PLAYBACK_DMA_ADDR       0x04            /* Playback DMA address */
 104 #define PLAYBACK_PERIOD_SIZE    0x05            /* Playback period size */
 105 #define PLAYBACK_POINTER        0x06            /* Playback period pointer. Sample currently in DAC */
 106 #define PLAYBACK_UNKNOWN1       0x07
 107 #define PLAYBACK_UNKNOWN2       0x08
 108 
 109 /* Only one capture channel supported */
 110 #define CAPTURE_DMA_ADDR        0x10            /* Capture DMA address */
 111 #define CAPTURE_BUFFER_SIZE     0x11            /* Capture buffer size */
 112 #define CAPTURE_POINTER         0x12            /* Capture buffer pointer. Sample currently in ADC */
 113 #define CAPTURE_UNKNOWN         0x13
 114 
 115 /* From 0x20 - 0x3f, last samples played on each channel */
 116 
 117 #define TRIGGER_CHANNEL         0x40            /* Trigger channel playback                     */
 118 #define TRIGGER_CHANNEL_0       0x00000001      /* Trigger channel 0                            */
 119 #define TRIGGER_CHANNEL_1       0x00000002      /* Trigger channel 1                            */
 120 #define TRIGGER_CHANNEL_2       0x00000004      /* Trigger channel 2                            */
 121 #define TRIGGER_CAPTURE         0x00000100      /* Trigger capture channel                      */
 122 
 123 #define ROUTING                 0x41            /* Setup sound routing ?                        */
 124 #define ROUTING_FRONT_LEFT      0x00000001
 125 #define ROUTING_FRONT_RIGHT     0x00000002
 126 #define ROUTING_REAR_LEFT       0x00000004
 127 #define ROUTING_REAR_RIGHT      0x00000008
 128 #define ROUTING_CENTER_LFE      0x00010000
 129 
 130 #define SPCS0                   0x42            /* SPDIF output Channel Status 0 register       */
 131 
 132 #define SPCS1                   0x43            /* SPDIF output Channel Status 1 register       */
 133 
 134 #define SPCS2                   0x44            /* SPDIF output Channel Status 2 register       */
 135 
 136 #define SPCS_CLKACCYMASK        0x30000000      /* Clock accuracy                               */
 137 #define SPCS_CLKACCY_1000PPM    0x00000000      /* 1000 parts per million                       */
 138 #define SPCS_CLKACCY_50PPM      0x10000000      /* 50 parts per million                         */
 139 #define SPCS_CLKACCY_VARIABLE   0x20000000      /* Variable accuracy                            */
 140 #define SPCS_SAMPLERATEMASK     0x0f000000      /* Sample rate                                  */
 141 #define SPCS_SAMPLERATE_44      0x00000000      /* 44.1kHz sample rate                          */
 142 #define SPCS_SAMPLERATE_48      0x02000000      /* 48kHz sample rate                            */
 143 #define SPCS_SAMPLERATE_32      0x03000000      /* 32kHz sample rate                            */
 144 #define SPCS_CHANNELNUMMASK     0x00f00000      /* Channel number                               */
 145 #define SPCS_CHANNELNUM_UNSPEC  0x00000000      /* Unspecified channel number                   */
 146 #define SPCS_CHANNELNUM_LEFT    0x00100000      /* Left channel                                 */
 147 #define SPCS_CHANNELNUM_RIGHT   0x00200000      /* Right channel                                */
 148 #define SPCS_SOURCENUMMASK      0x000f0000      /* Source number                                */
 149 #define SPCS_SOURCENUM_UNSPEC   0x00000000      /* Unspecified source number                    */
 150 #define SPCS_GENERATIONSTATUS   0x00008000      /* Originality flag (see IEC-958 spec)          */
 151 #define SPCS_CATEGORYCODEMASK   0x00007f00      /* Category code (see IEC-958 spec)             */
 152 #define SPCS_MODEMASK           0x000000c0      /* Mode (see IEC-958 spec)                      */
 153 #define SPCS_EMPHASISMASK       0x00000038      /* Emphasis                                     */
 154 #define SPCS_EMPHASIS_NONE      0x00000000      /* No emphasis                                  */
 155 #define SPCS_EMPHASIS_50_15     0x00000008      /* 50/15 usec 2 channel                         */
 156 #define SPCS_COPYRIGHT          0x00000004      /* Copyright asserted flag -- do not modify     */
 157 #define SPCS_NOTAUDIODATA       0x00000002      /* 0 = Digital audio, 1 = not audio             */
 158 #define SPCS_PROFESSIONAL       0x00000001      /* 0 = Consumer (IEC-958), 1 = pro (AES3-1992)  */
 159 
 160 #define SPDIF_SELECT            0x45            /* Enables SPDIF or Analogue outputs 0-Analogue, 0x700-SPDIF */
 161 
 162 /* This is the MPU port on the card                                                             */
 163 #define MUDATA          0x47
 164 #define MUCMD           0x48
 165 #define MUSTAT          MUCMD
 166 
 167 /* From 0x50 - 0x5f, last samples captured */
 168 
 169 /*
 170  * The hardware has 3 channels for playback and 1 for capture.
 171  *  - channel 0 is the front channel
 172  *  - channel 1 is the rear channel
 173  *  - channel 2 is the center/lfe channel
 174  * Volume is controlled by the AC97 for the front and rear channels by
 175  * the PCM Playback Volume, Sigmatel Surround Playback Volume and 
 176  * Surround Playback Volume. The Sigmatel 4-Speaker Stereo switch affects
 177  * the front/rear channel mixing in the REAR OUT jack. When using the
 178  * 4-Speaker Stereo, both front and rear channels will be mixed in the
 179  * REAR OUT.
 180  * The center/lfe channel has no volume control and cannot be muted during
 181  * playback.
 182  */
 183 
 184 struct emu10k1x_voice {
 185         struct emu10k1x *emu;
 186         int number;
 187         int use;
 188   
 189         struct emu10k1x_pcm *epcm;
 190 };
 191 
 192 struct emu10k1x_pcm {
 193         struct emu10k1x *emu;
 194         struct snd_pcm_substream *substream;
 195         struct emu10k1x_voice *voice;
 196         unsigned short running;
 197 };
 198 
 199 struct emu10k1x_midi {
 200         struct emu10k1x *emu;
 201         struct snd_rawmidi *rmidi;
 202         struct snd_rawmidi_substream *substream_input;
 203         struct snd_rawmidi_substream *substream_output;
 204         unsigned int midi_mode;
 205         spinlock_t input_lock;
 206         spinlock_t output_lock;
 207         spinlock_t open_lock;
 208         int tx_enable, rx_enable;
 209         int port;
 210         int ipr_tx, ipr_rx;
 211         void (*interrupt)(struct emu10k1x *emu, unsigned int status);
 212 };
 213 
 214 // definition of the chip-specific record
 215 struct emu10k1x {
 216         struct snd_card *card;
 217         struct pci_dev *pci;
 218 
 219         unsigned long port;
 220         struct resource *res_port;
 221         int irq;
 222 
 223         unsigned char revision;         /* chip revision */
 224         unsigned int serial;            /* serial number */
 225         unsigned short model;           /* subsystem id */
 226 
 227         spinlock_t emu_lock;
 228         spinlock_t voice_lock;
 229 
 230         struct snd_ac97 *ac97;
 231         struct snd_pcm *pcm;
 232 
 233         struct emu10k1x_voice voices[3];
 234         struct emu10k1x_voice capture_voice;
 235         u32 spdif_bits[3]; // SPDIF out setup
 236 
 237         struct snd_dma_buffer dma_buffer;
 238 
 239         struct emu10k1x_midi midi;
 240 };
 241 
 242 /* hardware definition */
 243 static const struct snd_pcm_hardware snd_emu10k1x_playback_hw = {
 244         .info =                 (SNDRV_PCM_INFO_MMAP | 
 245                                  SNDRV_PCM_INFO_INTERLEAVED |
 246                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 247                                  SNDRV_PCM_INFO_MMAP_VALID),
 248         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 249         .rates =                SNDRV_PCM_RATE_48000,
 250         .rate_min =             48000,
 251         .rate_max =             48000,
 252         .channels_min =         2,
 253         .channels_max =         2,
 254         .buffer_bytes_max =     (32*1024),
 255         .period_bytes_min =     64,
 256         .period_bytes_max =     (16*1024),
 257         .periods_min =          2,
 258         .periods_max =          8,
 259         .fifo_size =            0,
 260 };
 261 
 262 static const struct snd_pcm_hardware snd_emu10k1x_capture_hw = {
 263         .info =                 (SNDRV_PCM_INFO_MMAP | 
 264                                  SNDRV_PCM_INFO_INTERLEAVED |
 265                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 266                                  SNDRV_PCM_INFO_MMAP_VALID),
 267         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 268         .rates =                SNDRV_PCM_RATE_48000,
 269         .rate_min =             48000,
 270         .rate_max =             48000,
 271         .channels_min =         2,
 272         .channels_max =         2,
 273         .buffer_bytes_max =     (32*1024),
 274         .period_bytes_min =     64,
 275         .period_bytes_max =     (16*1024),
 276         .periods_min =          2,
 277         .periods_max =          2,
 278         .fifo_size =            0,
 279 };
 280 
 281 static unsigned int snd_emu10k1x_ptr_read(struct emu10k1x * emu, 
 282                                           unsigned int reg, 
 283                                           unsigned int chn)
 284 {
 285         unsigned long flags;
 286         unsigned int regptr, val;
 287   
 288         regptr = (reg << 16) | chn;
 289 
 290         spin_lock_irqsave(&emu->emu_lock, flags);
 291         outl(regptr, emu->port + PTR);
 292         val = inl(emu->port + DATA);
 293         spin_unlock_irqrestore(&emu->emu_lock, flags);
 294         return val;
 295 }
 296 
 297 static void snd_emu10k1x_ptr_write(struct emu10k1x *emu, 
 298                                    unsigned int reg, 
 299                                    unsigned int chn, 
 300                                    unsigned int data)
 301 {
 302         unsigned int regptr;
 303         unsigned long flags;
 304 
 305         regptr = (reg << 16) | chn;
 306 
 307         spin_lock_irqsave(&emu->emu_lock, flags);
 308         outl(regptr, emu->port + PTR);
 309         outl(data, emu->port + DATA);
 310         spin_unlock_irqrestore(&emu->emu_lock, flags);
 311 }
 312 
 313 static void snd_emu10k1x_intr_enable(struct emu10k1x *emu, unsigned int intrenb)
 314 {
 315         unsigned long flags;
 316         unsigned int intr_enable;
 317 
 318         spin_lock_irqsave(&emu->emu_lock, flags);
 319         intr_enable = inl(emu->port + INTE) | intrenb;
 320         outl(intr_enable, emu->port + INTE);
 321         spin_unlock_irqrestore(&emu->emu_lock, flags);
 322 }
 323 
 324 static void snd_emu10k1x_intr_disable(struct emu10k1x *emu, unsigned int intrenb)
 325 {
 326         unsigned long flags;
 327         unsigned int intr_enable;
 328 
 329         spin_lock_irqsave(&emu->emu_lock, flags);
 330         intr_enable = inl(emu->port + INTE) & ~intrenb;
 331         outl(intr_enable, emu->port + INTE);
 332         spin_unlock_irqrestore(&emu->emu_lock, flags);
 333 }
 334 
 335 static void snd_emu10k1x_gpio_write(struct emu10k1x *emu, unsigned int value)
 336 {
 337         unsigned long flags;
 338 
 339         spin_lock_irqsave(&emu->emu_lock, flags);
 340         outl(value, emu->port + GPIO);
 341         spin_unlock_irqrestore(&emu->emu_lock, flags);
 342 }
 343 
 344 static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime)
 345 {
 346         kfree(runtime->private_data);
 347 }
 348 
 349 static void snd_emu10k1x_pcm_interrupt(struct emu10k1x *emu, struct emu10k1x_voice *voice)
 350 {
 351         struct emu10k1x_pcm *epcm;
 352 
 353         if ((epcm = voice->epcm) == NULL)
 354                 return;
 355         if (epcm->substream == NULL)
 356                 return;
 357 #if 0
 358         dev_info(emu->card->dev,
 359                  "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
 360                    epcm->substream->ops->pointer(epcm->substream),
 361                    snd_pcm_lib_period_bytes(epcm->substream),
 362                    snd_pcm_lib_buffer_bytes(epcm->substream));
 363 #endif
 364         snd_pcm_period_elapsed(epcm->substream);
 365 }
 366 
 367 /* open callback */
 368 static int snd_emu10k1x_playback_open(struct snd_pcm_substream *substream)
 369 {
 370         struct emu10k1x *chip = snd_pcm_substream_chip(substream);
 371         struct emu10k1x_pcm *epcm;
 372         struct snd_pcm_runtime *runtime = substream->runtime;
 373         int err;
 374 
 375         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) {
 376                 return err;
 377         }
 378         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
 379                 return err;
 380 
 381         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 382         if (epcm == NULL)
 383                 return -ENOMEM;
 384         epcm->emu = chip;
 385         epcm->substream = substream;
 386   
 387         runtime->private_data = epcm;
 388         runtime->private_free = snd_emu10k1x_pcm_free_substream;
 389   
 390         runtime->hw = snd_emu10k1x_playback_hw;
 391 
 392         return 0;
 393 }
 394 
 395 /* close callback */
 396 static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream)
 397 {
 398         return 0;
 399 }
 400 
 401 /* hw_params callback */
 402 static int snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream *substream,
 403                                       struct snd_pcm_hw_params *hw_params)
 404 {
 405         struct snd_pcm_runtime *runtime = substream->runtime;
 406         struct emu10k1x_pcm *epcm = runtime->private_data;
 407 
 408         if (! epcm->voice) {
 409                 epcm->voice = &epcm->emu->voices[substream->pcm->device];
 410                 epcm->voice->use = 1;
 411                 epcm->voice->epcm = epcm;
 412         }
 413 
 414         return snd_pcm_lib_malloc_pages(substream,
 415                                         params_buffer_bytes(hw_params));
 416 }
 417 
 418 /* hw_free callback */
 419 static int snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream *substream)
 420 {
 421         struct snd_pcm_runtime *runtime = substream->runtime;
 422         struct emu10k1x_pcm *epcm;
 423 
 424         if (runtime->private_data == NULL)
 425                 return 0;
 426         
 427         epcm = runtime->private_data;
 428 
 429         if (epcm->voice) {
 430                 epcm->voice->use = 0;
 431                 epcm->voice->epcm = NULL;
 432                 epcm->voice = NULL;
 433         }
 434 
 435         return snd_pcm_lib_free_pages(substream);
 436 }
 437 
 438 /* prepare callback */
 439 static int snd_emu10k1x_pcm_prepare(struct snd_pcm_substream *substream)
 440 {
 441         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 442         struct snd_pcm_runtime *runtime = substream->runtime;
 443         struct emu10k1x_pcm *epcm = runtime->private_data;
 444         int voice = epcm->voice->number;
 445         u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice);
 446         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
 447         int i;
 448         
 449         for(i = 0; i < runtime->periods; i++) {
 450                 *table_base++=runtime->dma_addr+(i*period_size_bytes);
 451                 *table_base++=period_size_bytes<<16;
 452         }
 453 
 454         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice);
 455         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19);
 456         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0);
 457         snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0);
 458         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0);
 459         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0);
 460         snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr);
 461 
 462         snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16);
 463 
 464         return 0;
 465 }
 466 
 467 /* trigger callback */
 468 static int snd_emu10k1x_pcm_trigger(struct snd_pcm_substream *substream,
 469                                     int cmd)
 470 {
 471         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 472         struct snd_pcm_runtime *runtime = substream->runtime;
 473         struct emu10k1x_pcm *epcm = runtime->private_data;
 474         int channel = epcm->voice->number;
 475         int result = 0;
 476 
 477         /*
 478         dev_dbg(emu->card->dev,
 479                 "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n",
 480                 (int)emu, cmd, (int)substream->ops->pointer(substream));
 481         */
 482 
 483         switch (cmd) {
 484         case SNDRV_PCM_TRIGGER_START:
 485                 if(runtime->periods == 2)
 486                         snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
 487                 else
 488                         snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel);
 489                 epcm->running = 1;
 490                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel));
 491                 break;
 492         case SNDRV_PCM_TRIGGER_STOP:
 493                 epcm->running = 0;
 494                 snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
 495                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel));
 496                 break;
 497         default:
 498                 result = -EINVAL;
 499                 break;
 500         }
 501         return result;
 502 }
 503 
 504 /* pointer callback */
 505 static snd_pcm_uframes_t
 506 snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream)
 507 {
 508         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 509         struct snd_pcm_runtime *runtime = substream->runtime;
 510         struct emu10k1x_pcm *epcm = runtime->private_data;
 511         int channel = epcm->voice->number;
 512         snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0;
 513 
 514         if (!epcm->running)
 515                 return 0;
 516 
 517         ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
 518         ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
 519         ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
 520 
 521         if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size))
 522                 return 0;
 523         
 524         if (ptr3 != ptr4) 
 525                 ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
 526         ptr2 = bytes_to_frames(runtime, ptr1);
 527         ptr2 += (ptr4 >> 3) * runtime->period_size;
 528         ptr = ptr2;
 529 
 530         if (ptr >= runtime->buffer_size)
 531                 ptr -= runtime->buffer_size;
 532 
 533         return ptr;
 534 }
 535 
 536 /* operators */
 537 static const struct snd_pcm_ops snd_emu10k1x_playback_ops = {
 538         .open =        snd_emu10k1x_playback_open,
 539         .close =       snd_emu10k1x_playback_close,
 540         .ioctl =       snd_pcm_lib_ioctl,
 541         .hw_params =   snd_emu10k1x_pcm_hw_params,
 542         .hw_free =     snd_emu10k1x_pcm_hw_free,
 543         .prepare =     snd_emu10k1x_pcm_prepare,
 544         .trigger =     snd_emu10k1x_pcm_trigger,
 545         .pointer =     snd_emu10k1x_pcm_pointer,
 546 };
 547 
 548 /* open_capture callback */
 549 static int snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream *substream)
 550 {
 551         struct emu10k1x *chip = snd_pcm_substream_chip(substream);
 552         struct emu10k1x_pcm *epcm;
 553         struct snd_pcm_runtime *runtime = substream->runtime;
 554         int err;
 555 
 556         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 557                 return err;
 558         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
 559                 return err;
 560 
 561         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 562         if (epcm == NULL)
 563                 return -ENOMEM;
 564 
 565         epcm->emu = chip;
 566         epcm->substream = substream;
 567 
 568         runtime->private_data = epcm;
 569         runtime->private_free = snd_emu10k1x_pcm_free_substream;
 570 
 571         runtime->hw = snd_emu10k1x_capture_hw;
 572 
 573         return 0;
 574 }
 575 
 576 /* close callback */
 577 static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream)
 578 {
 579         return 0;
 580 }
 581 
 582 /* hw_params callback */
 583 static int snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream *substream,
 584                                               struct snd_pcm_hw_params *hw_params)
 585 {
 586         struct snd_pcm_runtime *runtime = substream->runtime;
 587         struct emu10k1x_pcm *epcm = runtime->private_data;
 588 
 589         if (! epcm->voice) {
 590                 if (epcm->emu->capture_voice.use)
 591                         return -EBUSY;
 592                 epcm->voice = &epcm->emu->capture_voice;
 593                 epcm->voice->epcm = epcm;
 594                 epcm->voice->use = 1;
 595         }
 596 
 597         return snd_pcm_lib_malloc_pages(substream,
 598                                         params_buffer_bytes(hw_params));
 599 }
 600 
 601 /* hw_free callback */
 602 static int snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream *substream)
 603 {
 604         struct snd_pcm_runtime *runtime = substream->runtime;
 605 
 606         struct emu10k1x_pcm *epcm;
 607 
 608         if (runtime->private_data == NULL)
 609                 return 0;
 610         epcm = runtime->private_data;
 611 
 612         if (epcm->voice) {
 613                 epcm->voice->use = 0;
 614                 epcm->voice->epcm = NULL;
 615                 epcm->voice = NULL;
 616         }
 617 
 618         return snd_pcm_lib_free_pages(substream);
 619 }
 620 
 621 /* prepare capture callback */
 622 static int snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream *substream)
 623 {
 624         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 625         struct snd_pcm_runtime *runtime = substream->runtime;
 626 
 627         snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr);
 628         snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
 629         snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0);
 630         snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0);
 631 
 632         return 0;
 633 }
 634 
 635 /* trigger_capture callback */
 636 static int snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream *substream,
 637                                             int cmd)
 638 {
 639         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 640         struct snd_pcm_runtime *runtime = substream->runtime;
 641         struct emu10k1x_pcm *epcm = runtime->private_data;
 642         int result = 0;
 643 
 644         switch (cmd) {
 645         case SNDRV_PCM_TRIGGER_START:
 646                 snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP | 
 647                                          INTE_CAP_0_HALF_LOOP);
 648                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE);
 649                 epcm->running = 1;
 650                 break;
 651         case SNDRV_PCM_TRIGGER_STOP:
 652                 epcm->running = 0;
 653                 snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP | 
 654                                           INTE_CAP_0_HALF_LOOP);
 655                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE));
 656                 break;
 657         default:
 658                 result = -EINVAL;
 659                 break;
 660         }
 661         return result;
 662 }
 663 
 664 /* pointer_capture callback */
 665 static snd_pcm_uframes_t
 666 snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream)
 667 {
 668         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 669         struct snd_pcm_runtime *runtime = substream->runtime;
 670         struct emu10k1x_pcm *epcm = runtime->private_data;
 671         snd_pcm_uframes_t ptr;
 672 
 673         if (!epcm->running)
 674                 return 0;
 675 
 676         ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0));
 677         if (ptr >= runtime->buffer_size)
 678                 ptr -= runtime->buffer_size;
 679 
 680         return ptr;
 681 }
 682 
 683 static const struct snd_pcm_ops snd_emu10k1x_capture_ops = {
 684         .open =        snd_emu10k1x_pcm_open_capture,
 685         .close =       snd_emu10k1x_pcm_close_capture,
 686         .ioctl =       snd_pcm_lib_ioctl,
 687         .hw_params =   snd_emu10k1x_pcm_hw_params_capture,
 688         .hw_free =     snd_emu10k1x_pcm_hw_free_capture,
 689         .prepare =     snd_emu10k1x_pcm_prepare_capture,
 690         .trigger =     snd_emu10k1x_pcm_trigger_capture,
 691         .pointer =     snd_emu10k1x_pcm_pointer_capture,
 692 };
 693 
 694 static unsigned short snd_emu10k1x_ac97_read(struct snd_ac97 *ac97,
 695                                              unsigned short reg)
 696 {
 697         struct emu10k1x *emu = ac97->private_data;
 698         unsigned long flags;
 699         unsigned short val;
 700   
 701         spin_lock_irqsave(&emu->emu_lock, flags);
 702         outb(reg, emu->port + AC97ADDRESS);
 703         val = inw(emu->port + AC97DATA);
 704         spin_unlock_irqrestore(&emu->emu_lock, flags);
 705         return val;
 706 }
 707 
 708 static void snd_emu10k1x_ac97_write(struct snd_ac97 *ac97,
 709                                     unsigned short reg, unsigned short val)
 710 {
 711         struct emu10k1x *emu = ac97->private_data;
 712         unsigned long flags;
 713   
 714         spin_lock_irqsave(&emu->emu_lock, flags);
 715         outb(reg, emu->port + AC97ADDRESS);
 716         outw(val, emu->port + AC97DATA);
 717         spin_unlock_irqrestore(&emu->emu_lock, flags);
 718 }
 719 
 720 static int snd_emu10k1x_ac97(struct emu10k1x *chip)
 721 {
 722         struct snd_ac97_bus *pbus;
 723         struct snd_ac97_template ac97;
 724         int err;
 725         static struct snd_ac97_bus_ops ops = {
 726                 .write = snd_emu10k1x_ac97_write,
 727                 .read = snd_emu10k1x_ac97_read,
 728         };
 729   
 730         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
 731                 return err;
 732         pbus->no_vra = 1; /* we don't need VRA */
 733 
 734         memset(&ac97, 0, sizeof(ac97));
 735         ac97.private_data = chip;
 736         ac97.scaps = AC97_SCAP_NO_SPDIF;
 737         return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
 738 }
 739 
 740 static int snd_emu10k1x_free(struct emu10k1x *chip)
 741 {
 742         snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0);
 743         // disable interrupts
 744         outl(0, chip->port + INTE);
 745         // disable audio
 746         outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
 747 
 748         /* release the irq */
 749         if (chip->irq >= 0)
 750                 free_irq(chip->irq, chip);
 751 
 752         // release the i/o port
 753         release_and_free_resource(chip->res_port);
 754 
 755         // release the DMA
 756         if (chip->dma_buffer.area) {
 757                 snd_dma_free_pages(&chip->dma_buffer);
 758         }
 759 
 760         pci_disable_device(chip->pci);
 761 
 762         // release the data
 763         kfree(chip);
 764         return 0;
 765 }
 766 
 767 static int snd_emu10k1x_dev_free(struct snd_device *device)
 768 {
 769         struct emu10k1x *chip = device->device_data;
 770         return snd_emu10k1x_free(chip);
 771 }
 772 
 773 static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id)
 774 {
 775         unsigned int status;
 776 
 777         struct emu10k1x *chip = dev_id;
 778         struct emu10k1x_voice *pvoice = chip->voices;
 779         int i;
 780         int mask;
 781 
 782         status = inl(chip->port + IPR);
 783 
 784         if (! status)
 785                 return IRQ_NONE;
 786 
 787         // capture interrupt
 788         if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
 789                 struct emu10k1x_voice *cap_voice = &chip->capture_voice;
 790                 if (cap_voice->use)
 791                         snd_emu10k1x_pcm_interrupt(chip, cap_voice);
 792                 else
 793                         snd_emu10k1x_intr_disable(chip, 
 794                                                   INTE_CAP_0_LOOP |
 795                                                   INTE_CAP_0_HALF_LOOP);
 796         }
 797                 
 798         mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP;
 799         for (i = 0; i < 3; i++) {
 800                 if (status & mask) {
 801                         if (pvoice->use)
 802                                 snd_emu10k1x_pcm_interrupt(chip, pvoice);
 803                         else 
 804                                 snd_emu10k1x_intr_disable(chip, mask);
 805                 }
 806                 pvoice++;
 807                 mask <<= 1;
 808         }
 809                 
 810         if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
 811                 if (chip->midi.interrupt)
 812                         chip->midi.interrupt(chip, status);
 813                 else
 814                         snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
 815         }
 816                 
 817         // acknowledge the interrupt if necessary
 818         outl(status, chip->port + IPR);
 819 
 820         /* dev_dbg(chip->card->dev, "interrupt %08x\n", status); */
 821         return IRQ_HANDLED;
 822 }
 823 
 824 static const struct snd_pcm_chmap_elem surround_map[] = {
 825         { .channels = 2,
 826           .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 827         { }
 828 };
 829 
 830 static const struct snd_pcm_chmap_elem clfe_map[] = {
 831         { .channels = 2,
 832           .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
 833         { }
 834 };
 835 
 836 static int snd_emu10k1x_pcm(struct emu10k1x *emu, int device)
 837 {
 838         struct snd_pcm *pcm;
 839         const struct snd_pcm_chmap_elem *map = NULL;
 840         int err;
 841         int capture = 0;
 842   
 843         if (device == 0)
 844                 capture = 1;
 845         
 846         if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
 847                 return err;
 848   
 849         pcm->private_data = emu;
 850         
 851         switch(device) {
 852         case 0:
 853                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
 854                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
 855                 break;
 856         case 1:
 857         case 2:
 858                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
 859                 break;
 860         }
 861 
 862         pcm->info_flags = 0;
 863         switch(device) {
 864         case 0:
 865                 strcpy(pcm->name, "EMU10K1X Front");
 866                 map = snd_pcm_std_chmaps;
 867                 break;
 868         case 1:
 869                 strcpy(pcm->name, "EMU10K1X Rear");
 870                 map = surround_map;
 871                 break;
 872         case 2:
 873                 strcpy(pcm->name, "EMU10K1X Center/LFE");
 874                 map = clfe_map;
 875                 break;
 876         }
 877         emu->pcm = pcm;
 878 
 879         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 880                                               snd_dma_pci_data(emu->pci), 
 881                                               32*1024, 32*1024);
 882   
 883         return snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
 884                                      1 << 2, NULL);
 885 }
 886 
 887 static int snd_emu10k1x_create(struct snd_card *card,
 888                                struct pci_dev *pci,
 889                                struct emu10k1x **rchip)
 890 {
 891         struct emu10k1x *chip;
 892         int err;
 893         int ch;
 894         static struct snd_device_ops ops = {
 895                 .dev_free = snd_emu10k1x_dev_free,
 896         };
 897 
 898         *rchip = NULL;
 899 
 900         if ((err = pci_enable_device(pci)) < 0)
 901                 return err;
 902         if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
 903             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
 904                 dev_err(card->dev, "error to set 28bit mask DMA\n");
 905                 pci_disable_device(pci);
 906                 return -ENXIO;
 907         }
 908 
 909         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 910         if (chip == NULL) {
 911                 pci_disable_device(pci);
 912                 return -ENOMEM;
 913         }
 914 
 915         chip->card = card;
 916         chip->pci = pci;
 917         chip->irq = -1;
 918 
 919         spin_lock_init(&chip->emu_lock);
 920         spin_lock_init(&chip->voice_lock);
 921   
 922         chip->port = pci_resource_start(pci, 0);
 923         if ((chip->res_port = request_region(chip->port, 8,
 924                                              "EMU10K1X")) == NULL) { 
 925                 dev_err(card->dev, "cannot allocate the port 0x%lx\n",
 926                         chip->port);
 927                 snd_emu10k1x_free(chip);
 928                 return -EBUSY;
 929         }
 930 
 931         if (request_irq(pci->irq, snd_emu10k1x_interrupt,
 932                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
 933                 dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
 934                 snd_emu10k1x_free(chip);
 935                 return -EBUSY;
 936         }
 937         chip->irq = pci->irq;
 938   
 939         if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
 940                                4 * 1024, &chip->dma_buffer) < 0) {
 941                 snd_emu10k1x_free(chip);
 942                 return -ENOMEM;
 943         }
 944 
 945         pci_set_master(pci);
 946         /* read revision & serial */
 947         chip->revision = pci->revision;
 948         pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
 949         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
 950         dev_info(card->dev, "Model %04x Rev %08x Serial %08x\n", chip->model,
 951                    chip->revision, chip->serial);
 952 
 953         outl(0, chip->port + INTE);     
 954 
 955         for(ch = 0; ch < 3; ch++) {
 956                 chip->voices[ch].emu = chip;
 957                 chip->voices[ch].number = ch;
 958         }
 959 
 960         /*
 961          *  Init to 0x02109204 :
 962          *  Clock accuracy    = 0     (1000ppm)
 963          *  Sample Rate       = 2     (48kHz)
 964          *  Audio Channel     = 1     (Left of 2)
 965          *  Source Number     = 0     (Unspecified)
 966          *  Generation Status = 1     (Original for Cat Code 12)
 967          *  Cat Code          = 12    (Digital Signal Mixer)
 968          *  Mode              = 0     (Mode 0)
 969          *  Emphasis          = 0     (None)
 970          *  CP                = 1     (Copyright unasserted)
 971          *  AN                = 0     (Audio data)
 972          *  P                 = 0     (Consumer)
 973          */
 974         snd_emu10k1x_ptr_write(chip, SPCS0, 0,
 975                                chip->spdif_bits[0] = 
 976                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 977                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 978                                SPCS_GENERATIONSTATUS | 0x00001200 |
 979                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
 980         snd_emu10k1x_ptr_write(chip, SPCS1, 0,
 981                                chip->spdif_bits[1] = 
 982                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 983                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 984                                SPCS_GENERATIONSTATUS | 0x00001200 |
 985                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
 986         snd_emu10k1x_ptr_write(chip, SPCS2, 0,
 987                                chip->spdif_bits[2] = 
 988                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 989                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 990                                SPCS_GENERATIONSTATUS | 0x00001200 |
 991                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
 992 
 993         snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
 994         snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
 995         snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
 996 
 997         outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
 998 
 999         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1000                                   chip, &ops)) < 0) {
1001                 snd_emu10k1x_free(chip);
1002                 return err;
1003         }
1004         *rchip = chip;
1005         return 0;
1006 }
1007 
1008 static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry, 
1009                                        struct snd_info_buffer *buffer)
1010 {
1011         struct emu10k1x *emu = entry->private_data;
1012         unsigned long value,value1,value2;
1013         unsigned long flags;
1014         int i;
1015 
1016         snd_iprintf(buffer, "Registers:\n\n");
1017         for(i = 0; i < 0x20; i+=4) {
1018                 spin_lock_irqsave(&emu->emu_lock, flags);
1019                 value = inl(emu->port + i);
1020                 spin_unlock_irqrestore(&emu->emu_lock, flags);
1021                 snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1022         }
1023         snd_iprintf(buffer, "\nRegisters\n\n");
1024         for(i = 0; i <= 0x48; i++) {
1025                 value = snd_emu10k1x_ptr_read(emu, i, 0);
1026                 if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1027                         value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1028                         value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1029                         snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1030                 } else {
1031                         snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1032                 }
1033         }
1034 }
1035 
1036 static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry, 
1037                                         struct snd_info_buffer *buffer)
1038 {
1039         struct emu10k1x *emu = entry->private_data;
1040         char line[64];
1041         unsigned int reg, channel_id , val;
1042 
1043         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1044                 if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1045                         continue;
1046 
1047                 if (reg < 0x49 && val <= 0xffffffff && channel_id <= 2)
1048                         snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1049         }
1050 }
1051 
1052 static int snd_emu10k1x_proc_init(struct emu10k1x *emu)
1053 {
1054         snd_card_rw_proc_new(emu->card, "emu10k1x_regs", emu,
1055                              snd_emu10k1x_proc_reg_read,
1056                              snd_emu10k1x_proc_reg_write);
1057         return 0;
1058 }
1059 
1060 #define snd_emu10k1x_shared_spdif_info  snd_ctl_boolean_mono_info
1061 
1062 static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1063                                          struct snd_ctl_elem_value *ucontrol)
1064 {
1065         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1066 
1067         ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1068 
1069         return 0;
1070 }
1071 
1072 static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1073                                          struct snd_ctl_elem_value *ucontrol)
1074 {
1075         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1076         unsigned int val;
1077 
1078         val = ucontrol->value.integer.value[0] ;
1079 
1080         if (val) {
1081                 // enable spdif output
1082                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1083                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1084                 snd_emu10k1x_gpio_write(emu, 0x1000);
1085         } else {
1086                 // disable spdif output
1087                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1088                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1089                 snd_emu10k1x_gpio_write(emu, 0x1080);
1090         }
1091         return 0;
1092 }
1093 
1094 static const struct snd_kcontrol_new snd_emu10k1x_shared_spdif =
1095 {
1096         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
1097         .name =         "Analog/Digital Output Jack",
1098         .info =         snd_emu10k1x_shared_spdif_info,
1099         .get =          snd_emu10k1x_shared_spdif_get,
1100         .put =          snd_emu10k1x_shared_spdif_put
1101 };
1102 
1103 static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1104 {
1105         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1106         uinfo->count = 1;
1107         return 0;
1108 }
1109 
1110 static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1111                                   struct snd_ctl_elem_value *ucontrol)
1112 {
1113         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1114         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1115 
1116         ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1117         ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1118         ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1119         ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1120         return 0;
1121 }
1122 
1123 static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1124                                        struct snd_ctl_elem_value *ucontrol)
1125 {
1126         ucontrol->value.iec958.status[0] = 0xff;
1127         ucontrol->value.iec958.status[1] = 0xff;
1128         ucontrol->value.iec958.status[2] = 0xff;
1129         ucontrol->value.iec958.status[3] = 0xff;
1130         return 0;
1131 }
1132 
1133 static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1134                                   struct snd_ctl_elem_value *ucontrol)
1135 {
1136         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1137         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1138         int change;
1139         unsigned int val;
1140 
1141         val = (ucontrol->value.iec958.status[0] << 0) |
1142                 (ucontrol->value.iec958.status[1] << 8) |
1143                 (ucontrol->value.iec958.status[2] << 16) |
1144                 (ucontrol->value.iec958.status[3] << 24);
1145         change = val != emu->spdif_bits[idx];
1146         if (change) {
1147                 snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1148                 emu->spdif_bits[idx] = val;
1149         }
1150         return change;
1151 }
1152 
1153 static const struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1154 {
1155         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
1156         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1157         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1158         .count =        3,
1159         .info =         snd_emu10k1x_spdif_info,
1160         .get =          snd_emu10k1x_spdif_get_mask
1161 };
1162 
1163 static const struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1164 {
1165         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1166         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1167         .count =        3,
1168         .info =         snd_emu10k1x_spdif_info,
1169         .get =          snd_emu10k1x_spdif_get,
1170         .put =          snd_emu10k1x_spdif_put
1171 };
1172 
1173 static int snd_emu10k1x_mixer(struct emu10k1x *emu)
1174 {
1175         int err;
1176         struct snd_kcontrol *kctl;
1177         struct snd_card *card = emu->card;
1178 
1179         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1180                 return -ENOMEM;
1181         if ((err = snd_ctl_add(card, kctl)))
1182                 return err;
1183         if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1184                 return -ENOMEM;
1185         if ((err = snd_ctl_add(card, kctl)))
1186                 return err;
1187         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1188                 return -ENOMEM;
1189         if ((err = snd_ctl_add(card, kctl)))
1190                 return err;
1191 
1192         return 0;
1193 }
1194 
1195 #define EMU10K1X_MIDI_MODE_INPUT        (1<<0)
1196 #define EMU10K1X_MIDI_MODE_OUTPUT       (1<<1)
1197 
1198 static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1199 {
1200         return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1201 }
1202 
1203 static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1204 {
1205         snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1206 }
1207 
1208 #define mpu401_write_data(emu, mpu, data)       mpu401_write(emu, mpu, data, 0)
1209 #define mpu401_write_cmd(emu, mpu, data)        mpu401_write(emu, mpu, data, 1)
1210 #define mpu401_read_data(emu, mpu)              mpu401_read(emu, mpu, 0)
1211 #define mpu401_read_stat(emu, mpu)              mpu401_read(emu, mpu, 1)
1212 
1213 #define mpu401_input_avail(emu,mpu)     (!(mpu401_read_stat(emu,mpu) & 0x80))
1214 #define mpu401_output_ready(emu,mpu)    (!(mpu401_read_stat(emu,mpu) & 0x40))
1215 
1216 #define MPU401_RESET            0xff
1217 #define MPU401_ENTER_UART       0x3f
1218 #define MPU401_ACK              0xfe
1219 
1220 static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1221 {
1222         int timeout = 100000;
1223         for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1224                 mpu401_read_data(emu, mpu);
1225 #ifdef CONFIG_SND_DEBUG
1226         if (timeout <= 0)
1227                 dev_err(emu->card->dev,
1228                         "cmd: clear rx timeout (status = 0x%x)\n",
1229                         mpu401_read_stat(emu, mpu));
1230 #endif
1231 }
1232 
1233 /*
1234 
1235  */
1236 
1237 static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1238                                        struct emu10k1x_midi *midi, unsigned int status)
1239 {
1240         unsigned char byte;
1241 
1242         if (midi->rmidi == NULL) {
1243                 snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1244                 return;
1245         }
1246 
1247         spin_lock(&midi->input_lock);
1248         if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1249                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1250                         mpu401_clear_rx(emu, midi);
1251                 } else {
1252                         byte = mpu401_read_data(emu, midi);
1253                         if (midi->substream_input)
1254                                 snd_rawmidi_receive(midi->substream_input, &byte, 1);
1255                 }
1256         }
1257         spin_unlock(&midi->input_lock);
1258 
1259         spin_lock(&midi->output_lock);
1260         if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1261                 if (midi->substream_output &&
1262                     snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1263                         mpu401_write_data(emu, midi, byte);
1264                 } else {
1265                         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1266                 }
1267         }
1268         spin_unlock(&midi->output_lock);
1269 }
1270 
1271 static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1272 {
1273         do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1274 }
1275 
1276 static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1277                                   struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1278 {
1279         unsigned long flags;
1280         int timeout, ok;
1281 
1282         spin_lock_irqsave(&midi->input_lock, flags);
1283         mpu401_write_data(emu, midi, 0x00);
1284         /* mpu401_clear_rx(emu, midi); */
1285 
1286         mpu401_write_cmd(emu, midi, cmd);
1287         if (ack) {
1288                 ok = 0;
1289                 timeout = 10000;
1290                 while (!ok && timeout-- > 0) {
1291                         if (mpu401_input_avail(emu, midi)) {
1292                                 if (mpu401_read_data(emu, midi) == MPU401_ACK)
1293                                         ok = 1;
1294                         }
1295                 }
1296                 if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1297                         ok = 1;
1298         } else {
1299                 ok = 1;
1300         }
1301         spin_unlock_irqrestore(&midi->input_lock, flags);
1302         if (!ok) {
1303                 dev_err(emu->card->dev,
1304                         "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1305                            cmd, emu->port,
1306                            mpu401_read_stat(emu, midi),
1307                            mpu401_read_data(emu, midi));
1308                 return 1;
1309         }
1310         return 0;
1311 }
1312 
1313 static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
1314 {
1315         struct emu10k1x *emu;
1316         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1317         unsigned long flags;
1318         
1319         emu = midi->emu;
1320         if (snd_BUG_ON(!emu))
1321                 return -ENXIO;
1322         spin_lock_irqsave(&midi->open_lock, flags);
1323         midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1324         midi->substream_input = substream;
1325         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1326                 spin_unlock_irqrestore(&midi->open_lock, flags);
1327                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1328                         goto error_out;
1329                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1330                         goto error_out;
1331         } else {
1332                 spin_unlock_irqrestore(&midi->open_lock, flags);
1333         }
1334         return 0;
1335 
1336 error_out:
1337         return -EIO;
1338 }
1339 
1340 static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1341 {
1342         struct emu10k1x *emu;
1343         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1344         unsigned long flags;
1345 
1346         emu = midi->emu;
1347         if (snd_BUG_ON(!emu))
1348                 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         if (snd_BUG_ON(!emu))
1376                 return -ENXIO;
1377         spin_lock_irqsave(&midi->open_lock, flags);
1378         snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1379         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1380         midi->substream_input = NULL;
1381         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1382                 spin_unlock_irqrestore(&midi->open_lock, flags);
1383                 err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1384         } else {
1385                 spin_unlock_irqrestore(&midi->open_lock, flags);
1386         }
1387         return err;
1388 }
1389 
1390 static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1391 {
1392         struct emu10k1x *emu;
1393         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1394         unsigned long flags;
1395         int err = 0;
1396 
1397         emu = midi->emu;
1398         if (snd_BUG_ON(!emu))
1399                 return -ENXIO;
1400         spin_lock_irqsave(&midi->open_lock, flags);
1401         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1402         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1403         midi->substream_output = NULL;
1404         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1405                 spin_unlock_irqrestore(&midi->open_lock, flags);
1406                 err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1407         } else {
1408                 spin_unlock_irqrestore(&midi->open_lock, flags);
1409         }
1410         return err;
1411 }
1412 
1413 static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1414 {
1415         struct emu10k1x *emu;
1416         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1417         emu = midi->emu;
1418         if (snd_BUG_ON(!emu))
1419                 return;
1420 
1421         if (up)
1422                 snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1423         else
1424                 snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1425 }
1426 
1427 static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1428 {
1429         struct emu10k1x *emu;
1430         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1431         unsigned long flags;
1432 
1433         emu = midi->emu;
1434         if (snd_BUG_ON(!emu))
1435                 return;
1436 
1437         if (up) {
1438                 int max = 4;
1439                 unsigned char byte;
1440         
1441                 /* try to send some amount of bytes here before interrupts */
1442                 spin_lock_irqsave(&midi->output_lock, flags);
1443                 while (max > 0) {
1444                         if (mpu401_output_ready(emu, midi)) {
1445                                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1446                                     snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1447                                         /* no more data */
1448                                         spin_unlock_irqrestore(&midi->output_lock, flags);
1449                                         return;
1450                                 }
1451                                 mpu401_write_data(emu, midi, byte);
1452                                 max--;
1453                         } else {
1454                                 break;
1455                         }
1456                 }
1457                 spin_unlock_irqrestore(&midi->output_lock, flags);
1458                 snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1459         } else {
1460                 snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1461         }
1462 }
1463 
1464 /*
1465 
1466  */
1467 
1468 static const struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1469 {
1470         .open =         snd_emu10k1x_midi_output_open,
1471         .close =        snd_emu10k1x_midi_output_close,
1472         .trigger =      snd_emu10k1x_midi_output_trigger,
1473 };
1474 
1475 static const struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1476 {
1477         .open =         snd_emu10k1x_midi_input_open,
1478         .close =        snd_emu10k1x_midi_input_close,
1479         .trigger =      snd_emu10k1x_midi_input_trigger,
1480 };
1481 
1482 static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1483 {
1484         struct emu10k1x_midi *midi = rmidi->private_data;
1485         midi->interrupt = NULL;
1486         midi->rmidi = NULL;
1487 }
1488 
1489 static int emu10k1x_midi_init(struct emu10k1x *emu,
1490                               struct emu10k1x_midi *midi, int device,
1491                               char *name)
1492 {
1493         struct snd_rawmidi *rmidi;
1494         int err;
1495 
1496         if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1497                 return err;
1498         midi->emu = emu;
1499         spin_lock_init(&midi->open_lock);
1500         spin_lock_init(&midi->input_lock);
1501         spin_lock_init(&midi->output_lock);
1502         strcpy(rmidi->name, name);
1503         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1504         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1505         rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1506                              SNDRV_RAWMIDI_INFO_INPUT |
1507                              SNDRV_RAWMIDI_INFO_DUPLEX;
1508         rmidi->private_data = midi;
1509         rmidi->private_free = snd_emu10k1x_midi_free;
1510         midi->rmidi = rmidi;
1511         return 0;
1512 }
1513 
1514 static int snd_emu10k1x_midi(struct emu10k1x *emu)
1515 {
1516         struct emu10k1x_midi *midi = &emu->midi;
1517         int err;
1518 
1519         if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1520                 return err;
1521 
1522         midi->tx_enable = INTE_MIDITXENABLE;
1523         midi->rx_enable = INTE_MIDIRXENABLE;
1524         midi->port = MUDATA;
1525         midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1526         midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1527         midi->interrupt = snd_emu10k1x_midi_interrupt;
1528         return 0;
1529 }
1530 
1531 static int snd_emu10k1x_probe(struct pci_dev *pci,
1532                               const struct pci_device_id *pci_id)
1533 {
1534         static int dev;
1535         struct snd_card *card;
1536         struct emu10k1x *chip;
1537         int err;
1538 
1539         if (dev >= SNDRV_CARDS)
1540                 return -ENODEV;
1541         if (!enable[dev]) {
1542                 dev++;
1543                 return -ENOENT;
1544         }
1545 
1546         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1547                            0, &card);
1548         if (err < 0)
1549                 return err;
1550 
1551         if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1552                 snd_card_free(card);
1553                 return err;
1554         }
1555 
1556         if ((err = snd_emu10k1x_pcm(chip, 0)) < 0) {
1557                 snd_card_free(card);
1558                 return err;
1559         }
1560         if ((err = snd_emu10k1x_pcm(chip, 1)) < 0) {
1561                 snd_card_free(card);
1562                 return err;
1563         }
1564         if ((err = snd_emu10k1x_pcm(chip, 2)) < 0) {
1565                 snd_card_free(card);
1566                 return err;
1567         }
1568 
1569         if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1570                 snd_card_free(card);
1571                 return err;
1572         }
1573 
1574         if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1575                 snd_card_free(card);
1576                 return err;
1577         }
1578         
1579         if ((err = snd_emu10k1x_midi(chip)) < 0) {
1580                 snd_card_free(card);
1581                 return err;
1582         }
1583 
1584         snd_emu10k1x_proc_init(chip);
1585 
1586         strcpy(card->driver, "EMU10K1X");
1587         strcpy(card->shortname, "Dell Sound Blaster Live!");
1588         sprintf(card->longname, "%s at 0x%lx irq %i",
1589                 card->shortname, chip->port, chip->irq);
1590 
1591         if ((err = snd_card_register(card)) < 0) {
1592                 snd_card_free(card);
1593                 return err;
1594         }
1595 
1596         pci_set_drvdata(pci, card);
1597         dev++;
1598         return 0;
1599 }
1600 
1601 static void snd_emu10k1x_remove(struct pci_dev *pci)
1602 {
1603         snd_card_free(pci_get_drvdata(pci));
1604 }
1605 
1606 // PCI IDs
1607 static const struct pci_device_id snd_emu10k1x_ids[] = {
1608         { PCI_VDEVICE(CREATIVE, 0x0006), 0 },   /* Dell OEM version (EMU10K1) */
1609         { 0, }
1610 };
1611 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1612 
1613 // pci_driver definition
1614 static struct pci_driver emu10k1x_driver = {
1615         .name = KBUILD_MODNAME,
1616         .id_table = snd_emu10k1x_ids,
1617         .probe = snd_emu10k1x_probe,
1618         .remove = snd_emu10k1x_remove,
1619 };
1620 
1621 module_pci_driver(emu10k1x_driver);
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root/sound/pci/emu10k1/emu10k1x.c

DEFINITIONS
