linux/sound/pci/emu10k1/emu10k1x.c
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   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/module.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
  45MODULE_AUTHOR("Francisco Moraes <fmoraes@nc.rr.com>");
  46MODULE_DESCRIPTION("EMU10K1X");
  47MODULE_LICENSE("GPL");
  48MODULE_SUPPORTED_DEVICE("{{Dell Creative Labs,SB Live!}");
  49
  50// module parameters (see "Module Parameters")
  51static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  52static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  53static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  54
  55module_param_array(index, int, NULL, 0444);
  56MODULE_PARM_DESC(index, "Index value for the EMU10K1X soundcard.");
  57module_param_array(id, charp, NULL, 0444);
  58MODULE_PARM_DESC(id, "ID string for the EMU10K1X soundcard.");
  59module_param_array(enable, bool, NULL, 0444);
  60MODULE_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 address */
 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 channel
 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
 198struct emu10k1x_voice {
 199        struct emu10k1x *emu;
 200        int number;
 201        int use;
 202  
 203        struct emu10k1x_pcm *epcm;
 204};
 205
 206struct emu10k1x_pcm {
 207        struct emu10k1x *emu;
 208        struct snd_pcm_substream *substream;
 209        struct emu10k1x_voice *voice;
 210        unsigned short running;
 211};
 212
 213struct 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
 229struct 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 */
 257static const 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
 276static const 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
 295static 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
 311static 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
 327static void snd_emu10k1x_intr_enable(struct emu10k1x *emu, unsigned int intrenb)
 328{
 329        unsigned long flags;
 330        unsigned int intr_enable;
 331
 332        spin_lock_irqsave(&emu->emu_lock, flags);
 333        intr_enable = inl(emu->port + INTE) | intrenb;
 334        outl(intr_enable, emu->port + INTE);
 335        spin_unlock_irqrestore(&emu->emu_lock, flags);
 336}
 337
 338static void snd_emu10k1x_intr_disable(struct emu10k1x *emu, unsigned int intrenb)
 339{
 340        unsigned long flags;
 341        unsigned int intr_enable;
 342
 343        spin_lock_irqsave(&emu->emu_lock, flags);
 344        intr_enable = inl(emu->port + INTE) & ~intrenb;
 345        outl(intr_enable, emu->port + INTE);
 346        spin_unlock_irqrestore(&emu->emu_lock, flags);
 347}
 348
 349static 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
 358static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime)
 359{
 360        kfree(runtime->private_data);
 361}
 362
 363static 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        dev_info(emu->card->dev,
 373                 "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
 374                   epcm->substream->ops->pointer(epcm->substream),
 375                   snd_pcm_lib_period_bytes(epcm->substream),
 376                   snd_pcm_lib_buffer_bytes(epcm->substream));
 377#endif
 378        snd_pcm_period_elapsed(epcm->substream);
 379}
 380
 381/* open callback */
 382static int snd_emu10k1x_playback_open(struct snd_pcm_substream *substream)
 383{
 384        struct emu10k1x *chip = snd_pcm_substream_chip(substream);
 385        struct emu10k1x_pcm *epcm;
 386        struct snd_pcm_runtime *runtime = substream->runtime;
 387        int err;
 388
 389        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) {
 390                return err;
 391        }
 392        if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
 393                return err;
 394
 395        epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 396        if (epcm == NULL)
 397                return -ENOMEM;
 398        epcm->emu = chip;
 399        epcm->substream = substream;
 400  
 401        runtime->private_data = epcm;
 402        runtime->private_free = snd_emu10k1x_pcm_free_substream;
 403  
 404        runtime->hw = snd_emu10k1x_playback_hw;
 405
 406        return 0;
 407}
 408
 409/* close callback */
 410static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream)
 411{
 412        return 0;
 413}
 414
 415/* hw_params callback */
 416static int snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream *substream,
 417                                      struct snd_pcm_hw_params *hw_params)
 418{
 419        struct snd_pcm_runtime *runtime = substream->runtime;
 420        struct emu10k1x_pcm *epcm = runtime->private_data;
 421
 422        if (! epcm->voice) {
 423                epcm->voice = &epcm->emu->voices[substream->pcm->device];
 424                epcm->voice->use = 1;
 425                epcm->voice->epcm = epcm;
 426        }
 427
 428        return snd_pcm_lib_malloc_pages(substream,
 429                                        params_buffer_bytes(hw_params));
 430}
 431
 432/* hw_free callback */
 433static int snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream *substream)
 434{
 435        struct snd_pcm_runtime *runtime = substream->runtime;
 436        struct emu10k1x_pcm *epcm;
 437
 438        if (runtime->private_data == NULL)
 439                return 0;
 440        
 441        epcm = runtime->private_data;
 442
 443        if (epcm->voice) {
 444                epcm->voice->use = 0;
 445                epcm->voice->epcm = NULL;
 446                epcm->voice = NULL;
 447        }
 448
 449        return snd_pcm_lib_free_pages(substream);
 450}
 451
 452/* prepare callback */
 453static int snd_emu10k1x_pcm_prepare(struct snd_pcm_substream *substream)
 454{
 455        struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 456        struct snd_pcm_runtime *runtime = substream->runtime;
 457        struct emu10k1x_pcm *epcm = runtime->private_data;
 458        int voice = epcm->voice->number;
 459        u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice);
 460        u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
 461        int i;
 462        
 463        for(i = 0; i < runtime->periods; i++) {
 464                *table_base++=runtime->dma_addr+(i*period_size_bytes);
 465                *table_base++=period_size_bytes<<16;
 466        }
 467
 468        snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice);
 469        snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19);
 470        snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0);
 471        snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0);
 472        snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0);
 473        snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0);
 474        snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr);
 475
 476        snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16);
 477
 478        return 0;
 479}
 480
 481/* trigger callback */
 482static int snd_emu10k1x_pcm_trigger(struct snd_pcm_substream *substream,
 483                                    int cmd)
 484{
 485        struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 486        struct snd_pcm_runtime *runtime = substream->runtime;
 487        struct emu10k1x_pcm *epcm = runtime->private_data;
 488        int channel = epcm->voice->number;
 489        int result = 0;
 490
 491        /*
 492        dev_dbg(emu->card->dev,
 493                "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n",
 494                (int)emu, cmd, (int)substream->ops->pointer(substream));
 495        */
 496
 497        switch (cmd) {
 498        case SNDRV_PCM_TRIGGER_START:
 499                if(runtime->periods == 2)
 500                        snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
 501                else
 502                        snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel);
 503                epcm->running = 1;
 504                snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel));
 505                break;
 506        case SNDRV_PCM_TRIGGER_STOP:
 507                epcm->running = 0;
 508                snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
 509                snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel));
 510                break;
 511        default:
 512                result = -EINVAL;
 513                break;
 514        }
 515        return result;
 516}
 517
 518/* pointer callback */
 519static snd_pcm_uframes_t
 520snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream)
 521{
 522        struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 523        struct snd_pcm_runtime *runtime = substream->runtime;
 524        struct emu10k1x_pcm *epcm = runtime->private_data;
 525        int channel = epcm->voice->number;
 526        snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0;
 527
 528        if (!epcm->running)
 529                return 0;
 530
 531        ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
 532        ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
 533        ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
 534
 535        if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size))
 536                return 0;
 537        
 538        if (ptr3 != ptr4) 
 539                ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
 540        ptr2 = bytes_to_frames(runtime, ptr1);
 541        ptr2 += (ptr4 >> 3) * runtime->period_size;
 542        ptr = ptr2;
 543
 544        if (ptr >= runtime->buffer_size)
 545                ptr -= runtime->buffer_size;
 546
 547        return ptr;
 548}
 549
 550/* operators */
 551static const struct snd_pcm_ops snd_emu10k1x_playback_ops = {
 552        .open =        snd_emu10k1x_playback_open,
 553        .close =       snd_emu10k1x_playback_close,
 554        .ioctl =       snd_pcm_lib_ioctl,
 555        .hw_params =   snd_emu10k1x_pcm_hw_params,
 556        .hw_free =     snd_emu10k1x_pcm_hw_free,
 557        .prepare =     snd_emu10k1x_pcm_prepare,
 558        .trigger =     snd_emu10k1x_pcm_trigger,
 559        .pointer =     snd_emu10k1x_pcm_pointer,
 560};
 561
 562/* open_capture callback */
 563static int snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream *substream)
 564{
 565        struct emu10k1x *chip = snd_pcm_substream_chip(substream);
 566        struct emu10k1x_pcm *epcm;
 567        struct snd_pcm_runtime *runtime = substream->runtime;
 568        int err;
 569
 570        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 571                return err;
 572        if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
 573                return err;
 574
 575        epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 576        if (epcm == NULL)
 577                return -ENOMEM;
 578
 579        epcm->emu = chip;
 580        epcm->substream = substream;
 581
 582        runtime->private_data = epcm;
 583        runtime->private_free = snd_emu10k1x_pcm_free_substream;
 584
 585        runtime->hw = snd_emu10k1x_capture_hw;
 586
 587        return 0;
 588}
 589
 590/* close callback */
 591static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream)
 592{
 593        return 0;
 594}
 595
 596/* hw_params callback */
 597static int snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream *substream,
 598                                              struct snd_pcm_hw_params *hw_params)
 599{
 600        struct snd_pcm_runtime *runtime = substream->runtime;
 601        struct emu10k1x_pcm *epcm = runtime->private_data;
 602
 603        if (! epcm->voice) {
 604                if (epcm->emu->capture_voice.use)
 605                        return -EBUSY;
 606                epcm->voice = &epcm->emu->capture_voice;
 607                epcm->voice->epcm = epcm;
 608                epcm->voice->use = 1;
 609        }
 610
 611        return snd_pcm_lib_malloc_pages(substream,
 612                                        params_buffer_bytes(hw_params));
 613}
 614
 615/* hw_free callback */
 616static int snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream *substream)
 617{
 618        struct snd_pcm_runtime *runtime = substream->runtime;
 619
 620        struct emu10k1x_pcm *epcm;
 621
 622        if (runtime->private_data == NULL)
 623                return 0;
 624        epcm = runtime->private_data;
 625
 626        if (epcm->voice) {
 627                epcm->voice->use = 0;
 628                epcm->voice->epcm = NULL;
 629                epcm->voice = NULL;
 630        }
 631
 632        return snd_pcm_lib_free_pages(substream);
 633}
 634
 635/* prepare capture callback */
 636static int snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream *substream)
 637{
 638        struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 639        struct snd_pcm_runtime *runtime = substream->runtime;
 640
 641        snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr);
 642        snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
 643        snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0);
 644        snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0);
 645
 646        return 0;
 647}
 648
 649/* trigger_capture callback */
 650static int snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream *substream,
 651                                            int cmd)
 652{
 653        struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 654        struct snd_pcm_runtime *runtime = substream->runtime;
 655        struct emu10k1x_pcm *epcm = runtime->private_data;
 656        int result = 0;
 657
 658        switch (cmd) {
 659        case SNDRV_PCM_TRIGGER_START:
 660                snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP | 
 661                                         INTE_CAP_0_HALF_LOOP);
 662                snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE);
 663                epcm->running = 1;
 664                break;
 665        case SNDRV_PCM_TRIGGER_STOP:
 666                epcm->running = 0;
 667                snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP | 
 668                                          INTE_CAP_0_HALF_LOOP);
 669                snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE));
 670                break;
 671        default:
 672                result = -EINVAL;
 673                break;
 674        }
 675        return result;
 676}
 677
 678/* pointer_capture callback */
 679static snd_pcm_uframes_t
 680snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream)
 681{
 682        struct emu10k1x *emu = snd_pcm_substream_chip(substream);
 683        struct snd_pcm_runtime *runtime = substream->runtime;
 684        struct emu10k1x_pcm *epcm = runtime->private_data;
 685        snd_pcm_uframes_t ptr;
 686
 687        if (!epcm->running)
 688                return 0;
 689
 690        ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0));
 691        if (ptr >= runtime->buffer_size)
 692                ptr -= runtime->buffer_size;
 693
 694        return ptr;
 695}
 696
 697static const struct snd_pcm_ops snd_emu10k1x_capture_ops = {
 698        .open =        snd_emu10k1x_pcm_open_capture,
 699        .close =       snd_emu10k1x_pcm_close_capture,
 700        .ioctl =       snd_pcm_lib_ioctl,
 701        .hw_params =   snd_emu10k1x_pcm_hw_params_capture,
 702        .hw_free =     snd_emu10k1x_pcm_hw_free_capture,
 703        .prepare =     snd_emu10k1x_pcm_prepare_capture,
 704        .trigger =     snd_emu10k1x_pcm_trigger_capture,
 705        .pointer =     snd_emu10k1x_pcm_pointer_capture,
 706};
 707
 708static unsigned short snd_emu10k1x_ac97_read(struct snd_ac97 *ac97,
 709                                             unsigned short reg)
 710{
 711        struct emu10k1x *emu = ac97->private_data;
 712        unsigned long flags;
 713        unsigned short val;
 714  
 715        spin_lock_irqsave(&emu->emu_lock, flags);
 716        outb(reg, emu->port + AC97ADDRESS);
 717        val = inw(emu->port + AC97DATA);
 718        spin_unlock_irqrestore(&emu->emu_lock, flags);
 719        return val;
 720}
 721
 722static void snd_emu10k1x_ac97_write(struct snd_ac97 *ac97,
 723                                    unsigned short reg, unsigned short val)
 724{
 725        struct emu10k1x *emu = ac97->private_data;
 726        unsigned long flags;
 727  
 728        spin_lock_irqsave(&emu->emu_lock, flags);
 729        outb(reg, emu->port + AC97ADDRESS);
 730        outw(val, emu->port + AC97DATA);
 731        spin_unlock_irqrestore(&emu->emu_lock, flags);
 732}
 733
 734static int snd_emu10k1x_ac97(struct emu10k1x *chip)
 735{
 736        struct snd_ac97_bus *pbus;
 737        struct snd_ac97_template ac97;
 738        int err;
 739        static struct snd_ac97_bus_ops ops = {
 740                .write = snd_emu10k1x_ac97_write,
 741                .read = snd_emu10k1x_ac97_read,
 742        };
 743  
 744        if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
 745                return err;
 746        pbus->no_vra = 1; /* we don't need VRA */
 747
 748        memset(&ac97, 0, sizeof(ac97));
 749        ac97.private_data = chip;
 750        ac97.scaps = AC97_SCAP_NO_SPDIF;
 751        return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
 752}
 753
 754static int snd_emu10k1x_free(struct emu10k1x *chip)
 755{
 756        snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0);
 757        // disable interrupts
 758        outl(0, chip->port + INTE);
 759        // disable audio
 760        outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
 761
 762        /* release the irq */
 763        if (chip->irq >= 0)
 764                free_irq(chip->irq, chip);
 765
 766        // release the i/o port
 767        release_and_free_resource(chip->res_port);
 768
 769        // release the DMA
 770        if (chip->dma_buffer.area) {
 771                snd_dma_free_pages(&chip->dma_buffer);
 772        }
 773
 774        pci_disable_device(chip->pci);
 775
 776        // release the data
 777        kfree(chip);
 778        return 0;
 779}
 780
 781static int snd_emu10k1x_dev_free(struct snd_device *device)
 782{
 783        struct emu10k1x *chip = device->device_data;
 784        return snd_emu10k1x_free(chip);
 785}
 786
 787static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id)
 788{
 789        unsigned int status;
 790
 791        struct emu10k1x *chip = dev_id;
 792        struct emu10k1x_voice *pvoice = chip->voices;
 793        int i;
 794        int mask;
 795
 796        status = inl(chip->port + IPR);
 797
 798        if (! status)
 799                return IRQ_NONE;
 800
 801        // capture interrupt
 802        if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
 803                struct emu10k1x_voice *cap_voice = &chip->capture_voice;
 804                if (cap_voice->use)
 805                        snd_emu10k1x_pcm_interrupt(chip, cap_voice);
 806                else
 807                        snd_emu10k1x_intr_disable(chip, 
 808                                                  INTE_CAP_0_LOOP |
 809                                                  INTE_CAP_0_HALF_LOOP);
 810        }
 811                
 812        mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP;
 813        for (i = 0; i < 3; i++) {
 814                if (status & mask) {
 815                        if (pvoice->use)
 816                                snd_emu10k1x_pcm_interrupt(chip, pvoice);
 817                        else 
 818                                snd_emu10k1x_intr_disable(chip, mask);
 819                }
 820                pvoice++;
 821                mask <<= 1;
 822        }
 823                
 824        if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
 825                if (chip->midi.interrupt)
 826                        chip->midi.interrupt(chip, status);
 827                else
 828                        snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
 829        }
 830                
 831        // acknowledge the interrupt if necessary
 832        outl(status, chip->port + IPR);
 833
 834        /* dev_dbg(chip->card->dev, "interrupt %08x\n", status); */
 835        return IRQ_HANDLED;
 836}
 837
 838static const struct snd_pcm_chmap_elem surround_map[] = {
 839        { .channels = 2,
 840          .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
 841        { }
 842};
 843
 844static const struct snd_pcm_chmap_elem clfe_map[] = {
 845        { .channels = 2,
 846          .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
 847        { }
 848};
 849
 850static int snd_emu10k1x_pcm(struct emu10k1x *emu, int device)
 851{
 852        struct snd_pcm *pcm;
 853        const struct snd_pcm_chmap_elem *map = NULL;
 854        int err;
 855        int capture = 0;
 856  
 857        if (device == 0)
 858                capture = 1;
 859        
 860        if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
 861                return err;
 862  
 863        pcm->private_data = emu;
 864        
 865        switch(device) {
 866        case 0:
 867                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
 868                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
 869                break;
 870        case 1:
 871        case 2:
 872                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
 873                break;
 874        }
 875
 876        pcm->info_flags = 0;
 877        switch(device) {
 878        case 0:
 879                strcpy(pcm->name, "EMU10K1X Front");
 880                map = snd_pcm_std_chmaps;
 881                break;
 882        case 1:
 883                strcpy(pcm->name, "EMU10K1X Rear");
 884                map = surround_map;
 885                break;
 886        case 2:
 887                strcpy(pcm->name, "EMU10K1X Center/LFE");
 888                map = clfe_map;
 889                break;
 890        }
 891        emu->pcm = pcm;
 892
 893        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 894                                              snd_dma_pci_data(emu->pci), 
 895                                              32*1024, 32*1024);
 896  
 897        return snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
 898                                     1 << 2, NULL);
 899}
 900
 901static int snd_emu10k1x_create(struct snd_card *card,
 902                               struct pci_dev *pci,
 903                               struct emu10k1x **rchip)
 904{
 905        struct emu10k1x *chip;
 906        int err;
 907        int ch;
 908        static struct snd_device_ops ops = {
 909                .dev_free = snd_emu10k1x_dev_free,
 910        };
 911
 912        *rchip = NULL;
 913
 914        if ((err = pci_enable_device(pci)) < 0)
 915                return err;
 916        if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
 917            pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
 918                dev_err(card->dev, "error to set 28bit mask DMA\n");
 919                pci_disable_device(pci);
 920                return -ENXIO;
 921        }
 922
 923        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 924        if (chip == NULL) {
 925                pci_disable_device(pci);
 926                return -ENOMEM;
 927        }
 928
 929        chip->card = card;
 930        chip->pci = pci;
 931        chip->irq = -1;
 932
 933        spin_lock_init(&chip->emu_lock);
 934        spin_lock_init(&chip->voice_lock);
 935  
 936        chip->port = pci_resource_start(pci, 0);
 937        if ((chip->res_port = request_region(chip->port, 8,
 938                                             "EMU10K1X")) == NULL) { 
 939                dev_err(card->dev, "cannot allocate the port 0x%lx\n",
 940                        chip->port);
 941                snd_emu10k1x_free(chip);
 942                return -EBUSY;
 943        }
 944
 945        if (request_irq(pci->irq, snd_emu10k1x_interrupt,
 946                        IRQF_SHARED, KBUILD_MODNAME, chip)) {
 947                dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
 948                snd_emu10k1x_free(chip);
 949                return -EBUSY;
 950        }
 951        chip->irq = pci->irq;
 952  
 953        if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
 954                               4 * 1024, &chip->dma_buffer) < 0) {
 955                snd_emu10k1x_free(chip);
 956                return -ENOMEM;
 957        }
 958
 959        pci_set_master(pci);
 960        /* read revision & serial */
 961        chip->revision = pci->revision;
 962        pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
 963        pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
 964        dev_info(card->dev, "Model %04x Rev %08x Serial %08x\n", chip->model,
 965                   chip->revision, chip->serial);
 966
 967        outl(0, chip->port + INTE);     
 968
 969        for(ch = 0; ch < 3; ch++) {
 970                chip->voices[ch].emu = chip;
 971                chip->voices[ch].number = ch;
 972        }
 973
 974        /*
 975         *  Init to 0x02109204 :
 976         *  Clock accuracy    = 0     (1000ppm)
 977         *  Sample Rate       = 2     (48kHz)
 978         *  Audio Channel     = 1     (Left of 2)
 979         *  Source Number     = 0     (Unspecified)
 980         *  Generation Status = 1     (Original for Cat Code 12)
 981         *  Cat Code          = 12    (Digital Signal Mixer)
 982         *  Mode              = 0     (Mode 0)
 983         *  Emphasis          = 0     (None)
 984         *  CP                = 1     (Copyright unasserted)
 985         *  AN                = 0     (Audio data)
 986         *  P                 = 0     (Consumer)
 987         */
 988        snd_emu10k1x_ptr_write(chip, SPCS0, 0,
 989                               chip->spdif_bits[0] = 
 990                               SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 991                               SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 992                               SPCS_GENERATIONSTATUS | 0x00001200 |
 993                               0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
 994        snd_emu10k1x_ptr_write(chip, SPCS1, 0,
 995                               chip->spdif_bits[1] = 
 996                               SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
 997                               SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
 998                               SPCS_GENERATIONSTATUS | 0x00001200 |
 999                               0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1000        snd_emu10k1x_ptr_write(chip, SPCS2, 0,
1001                               chip->spdif_bits[2] = 
1002                               SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1003                               SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1004                               SPCS_GENERATIONSTATUS | 0x00001200 |
1005                               0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1006
1007        snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
1008        snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
1009        snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
1010
1011        outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
1012
1013        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1014                                  chip, &ops)) < 0) {
1015                snd_emu10k1x_free(chip);
1016                return err;
1017        }
1018        *rchip = chip;
1019        return 0;
1020}
1021
1022static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry, 
1023                                       struct snd_info_buffer *buffer)
1024{
1025        struct emu10k1x *emu = entry->private_data;
1026        unsigned long value,value1,value2;
1027        unsigned long flags;
1028        int i;
1029
1030        snd_iprintf(buffer, "Registers:\n\n");
1031        for(i = 0; i < 0x20; i+=4) {
1032                spin_lock_irqsave(&emu->emu_lock, flags);
1033                value = inl(emu->port + i);
1034                spin_unlock_irqrestore(&emu->emu_lock, flags);
1035                snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1036        }
1037        snd_iprintf(buffer, "\nRegisters\n\n");
1038        for(i = 0; i <= 0x48; i++) {
1039                value = snd_emu10k1x_ptr_read(emu, i, 0);
1040                if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1041                        value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1042                        value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1043                        snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1044                } else {
1045                        snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1046                }
1047        }
1048}
1049
1050static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry, 
1051                                        struct snd_info_buffer *buffer)
1052{
1053        struct emu10k1x *emu = entry->private_data;
1054        char line[64];
1055        unsigned int reg, channel_id , val;
1056
1057        while (!snd_info_get_line(buffer, line, sizeof(line))) {
1058                if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1059                        continue;
1060
1061                if (reg < 0x49 && val <= 0xffffffff && channel_id <= 2)
1062                        snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1063        }
1064}
1065
1066static int snd_emu10k1x_proc_init(struct emu10k1x *emu)
1067{
1068        snd_card_rw_proc_new(emu->card, "emu10k1x_regs", emu,
1069                             snd_emu10k1x_proc_reg_read,
1070                             snd_emu10k1x_proc_reg_write);
1071        return 0;
1072}
1073
1074#define snd_emu10k1x_shared_spdif_info  snd_ctl_boolean_mono_info
1075
1076static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1077                                         struct snd_ctl_elem_value *ucontrol)
1078{
1079        struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1080
1081        ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1082
1083        return 0;
1084}
1085
1086static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1087                                         struct snd_ctl_elem_value *ucontrol)
1088{
1089        struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1090        unsigned int val;
1091        int change = 0;
1092
1093        val = ucontrol->value.integer.value[0] ;
1094
1095        if (val) {
1096                // enable spdif output
1097                snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1098                snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1099                snd_emu10k1x_gpio_write(emu, 0x1000);
1100        } else {
1101                // disable spdif output
1102                snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1103                snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1104                snd_emu10k1x_gpio_write(emu, 0x1080);
1105        }
1106        return change;
1107}
1108
1109static const struct snd_kcontrol_new snd_emu10k1x_shared_spdif =
1110{
1111        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
1112        .name =         "Analog/Digital Output Jack",
1113        .info =         snd_emu10k1x_shared_spdif_info,
1114        .get =          snd_emu10k1x_shared_spdif_get,
1115        .put =          snd_emu10k1x_shared_spdif_put
1116};
1117
1118static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1119{
1120        uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1121        uinfo->count = 1;
1122        return 0;
1123}
1124
1125static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1126                                  struct snd_ctl_elem_value *ucontrol)
1127{
1128        struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1129        unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1130
1131        ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1132        ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1133        ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1134        ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1135        return 0;
1136}
1137
1138static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1139                                       struct snd_ctl_elem_value *ucontrol)
1140{
1141        ucontrol->value.iec958.status[0] = 0xff;
1142        ucontrol->value.iec958.status[1] = 0xff;
1143        ucontrol->value.iec958.status[2] = 0xff;
1144        ucontrol->value.iec958.status[3] = 0xff;
1145        return 0;
1146}
1147
1148static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1149                                  struct snd_ctl_elem_value *ucontrol)
1150{
1151        struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1152        unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1153        int change;
1154        unsigned int val;
1155
1156        val = (ucontrol->value.iec958.status[0] << 0) |
1157                (ucontrol->value.iec958.status[1] << 8) |
1158                (ucontrol->value.iec958.status[2] << 16) |
1159                (ucontrol->value.iec958.status[3] << 24);
1160        change = val != emu->spdif_bits[idx];
1161        if (change) {
1162                snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1163                emu->spdif_bits[idx] = val;
1164        }
1165        return change;
1166}
1167
1168static const struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1169{
1170        .access =       SNDRV_CTL_ELEM_ACCESS_READ,
1171        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1172        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1173        .count =        3,
1174        .info =         snd_emu10k1x_spdif_info,
1175        .get =          snd_emu10k1x_spdif_get_mask
1176};
1177
1178static const struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1179{
1180        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1181        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1182        .count =        3,
1183        .info =         snd_emu10k1x_spdif_info,
1184        .get =          snd_emu10k1x_spdif_get,
1185        .put =          snd_emu10k1x_spdif_put
1186};
1187
1188static int snd_emu10k1x_mixer(struct emu10k1x *emu)
1189{
1190        int err;
1191        struct snd_kcontrol *kctl;
1192        struct snd_card *card = emu->card;
1193
1194        if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1195                return -ENOMEM;
1196        if ((err = snd_ctl_add(card, kctl)))
1197                return err;
1198        if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1199                return -ENOMEM;
1200        if ((err = snd_ctl_add(card, kctl)))
1201                return err;
1202        if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1203                return -ENOMEM;
1204        if ((err = snd_ctl_add(card, kctl)))
1205                return err;
1206
1207        return 0;
1208}
1209
1210#define EMU10K1X_MIDI_MODE_INPUT        (1<<0)
1211#define EMU10K1X_MIDI_MODE_OUTPUT       (1<<1)
1212
1213static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1214{
1215        return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1216}
1217
1218static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1219{
1220        snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1221}
1222
1223#define mpu401_write_data(emu, mpu, data)       mpu401_write(emu, mpu, data, 0)
1224#define mpu401_write_cmd(emu, mpu, data)        mpu401_write(emu, mpu, data, 1)
1225#define mpu401_read_data(emu, mpu)              mpu401_read(emu, mpu, 0)
1226#define mpu401_read_stat(emu, mpu)              mpu401_read(emu, mpu, 1)
1227
1228#define mpu401_input_avail(emu,mpu)     (!(mpu401_read_stat(emu,mpu) & 0x80))
1229#define mpu401_output_ready(emu,mpu)    (!(mpu401_read_stat(emu,mpu) & 0x40))
1230
1231#define MPU401_RESET            0xff
1232#define MPU401_ENTER_UART       0x3f
1233#define MPU401_ACK              0xfe
1234
1235static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1236{
1237        int timeout = 100000;
1238        for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1239                mpu401_read_data(emu, mpu);
1240#ifdef CONFIG_SND_DEBUG
1241        if (timeout <= 0)
1242                dev_err(emu->card->dev,
1243                        "cmd: clear rx timeout (status = 0x%x)\n",
1244                        mpu401_read_stat(emu, mpu));
1245#endif
1246}
1247
1248/*
1249
1250 */
1251
1252static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1253                                       struct emu10k1x_midi *midi, unsigned int status)
1254{
1255        unsigned char byte;
1256
1257        if (midi->rmidi == NULL) {
1258                snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1259                return;
1260        }
1261
1262        spin_lock(&midi->input_lock);
1263        if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1264                if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1265                        mpu401_clear_rx(emu, midi);
1266                } else {
1267                        byte = mpu401_read_data(emu, midi);
1268                        if (midi->substream_input)
1269                                snd_rawmidi_receive(midi->substream_input, &byte, 1);
1270                }
1271        }
1272        spin_unlock(&midi->input_lock);
1273
1274        spin_lock(&midi->output_lock);
1275        if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1276                if (midi->substream_output &&
1277                    snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1278                        mpu401_write_data(emu, midi, byte);
1279                } else {
1280                        snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1281                }
1282        }
1283        spin_unlock(&midi->output_lock);
1284}
1285
1286static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1287{
1288        do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1289}
1290
1291static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1292                                  struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1293{
1294        unsigned long flags;
1295        int timeout, ok;
1296
1297        spin_lock_irqsave(&midi->input_lock, flags);
1298        mpu401_write_data(emu, midi, 0x00);
1299        /* mpu401_clear_rx(emu, midi); */
1300
1301        mpu401_write_cmd(emu, midi, cmd);
1302        if (ack) {
1303                ok = 0;
1304                timeout = 10000;
1305                while (!ok && timeout-- > 0) {
1306                        if (mpu401_input_avail(emu, midi)) {
1307                                if (mpu401_read_data(emu, midi) == MPU401_ACK)
1308                                        ok = 1;
1309                        }
1310                }
1311                if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1312                        ok = 1;
1313        } else {
1314                ok = 1;
1315        }
1316        spin_unlock_irqrestore(&midi->input_lock, flags);
1317        if (!ok) {
1318                dev_err(emu->card->dev,
1319                        "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1320                           cmd, emu->port,
1321                           mpu401_read_stat(emu, midi),
1322                           mpu401_read_data(emu, midi));
1323                return 1;
1324        }
1325        return 0;
1326}
1327
1328static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
1329{
1330        struct emu10k1x *emu;
1331        struct emu10k1x_midi *midi = substream->rmidi->private_data;
1332        unsigned long flags;
1333        
1334        emu = midi->emu;
1335        if (snd_BUG_ON(!emu))
1336                return -ENXIO;
1337        spin_lock_irqsave(&midi->open_lock, flags);
1338        midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1339        midi->substream_input = substream;
1340        if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1341                spin_unlock_irqrestore(&midi->open_lock, flags);
1342                if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1343                        goto error_out;
1344                if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1345                        goto error_out;
1346        } else {
1347                spin_unlock_irqrestore(&midi->open_lock, flags);
1348        }
1349        return 0;
1350
1351error_out:
1352        return -EIO;
1353}
1354
1355static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1356{
1357        struct emu10k1x *emu;
1358        struct emu10k1x_midi *midi = substream->rmidi->private_data;
1359        unsigned long flags;
1360
1361        emu = midi->emu;
1362        if (snd_BUG_ON(!emu))
1363                return -ENXIO;
1364        spin_lock_irqsave(&midi->open_lock, flags);
1365        midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
1366        midi->substream_output = substream;
1367        if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1368                spin_unlock_irqrestore(&midi->open_lock, flags);
1369                if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1370                        goto error_out;
1371                if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1372                        goto error_out;
1373        } else {
1374                spin_unlock_irqrestore(&midi->open_lock, flags);
1375        }
1376        return 0;
1377
1378error_out:
1379        return -EIO;
1380}
1381
1382static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
1383{
1384        struct emu10k1x *emu;
1385        struct emu10k1x_midi *midi = substream->rmidi->private_data;
1386        unsigned long flags;
1387        int err = 0;
1388
1389        emu = midi->emu;
1390        if (snd_BUG_ON(!emu))
1391                return -ENXIO;
1392        spin_lock_irqsave(&midi->open_lock, flags);
1393        snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1394        midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1395        midi->substream_input = NULL;
1396        if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1397                spin_unlock_irqrestore(&midi->open_lock, flags);
1398                err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1399        } else {
1400                spin_unlock_irqrestore(&midi->open_lock, flags);
1401        }
1402        return err;
1403}
1404
1405static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1406{
1407        struct emu10k1x *emu;
1408        struct emu10k1x_midi *midi = substream->rmidi->private_data;
1409        unsigned long flags;
1410        int err = 0;
1411
1412        emu = midi->emu;
1413        if (snd_BUG_ON(!emu))
1414                return -ENXIO;
1415        spin_lock_irqsave(&midi->open_lock, flags);
1416        snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1417        midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1418        midi->substream_output = NULL;
1419        if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1420                spin_unlock_irqrestore(&midi->open_lock, flags);
1421                err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1422        } else {
1423                spin_unlock_irqrestore(&midi->open_lock, flags);
1424        }
1425        return err;
1426}
1427
1428static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1429{
1430        struct emu10k1x *emu;
1431        struct emu10k1x_midi *midi = substream->rmidi->private_data;
1432        emu = midi->emu;
1433        if (snd_BUG_ON(!emu))
1434                return;
1435
1436        if (up)
1437                snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1438        else
1439                snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1440}
1441
1442static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1443{
1444        struct emu10k1x *emu;
1445        struct emu10k1x_midi *midi = substream->rmidi->private_data;
1446        unsigned long flags;
1447
1448        emu = midi->emu;
1449        if (snd_BUG_ON(!emu))
1450                return;
1451
1452        if (up) {
1453                int max = 4;
1454                unsigned char byte;
1455        
1456                /* try to send some amount of bytes here before interrupts */
1457                spin_lock_irqsave(&midi->output_lock, flags);
1458                while (max > 0) {
1459                        if (mpu401_output_ready(emu, midi)) {
1460                                if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1461                                    snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1462                                        /* no more data */
1463                                        spin_unlock_irqrestore(&midi->output_lock, flags);
1464                                        return;
1465                                }
1466                                mpu401_write_data(emu, midi, byte);
1467                                max--;
1468                        } else {
1469                                break;
1470                        }
1471                }
1472                spin_unlock_irqrestore(&midi->output_lock, flags);
1473                snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1474        } else {
1475                snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1476        }
1477}
1478
1479/*
1480
1481 */
1482
1483static const struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1484{
1485        .open =         snd_emu10k1x_midi_output_open,
1486        .close =        snd_emu10k1x_midi_output_close,
1487        .trigger =      snd_emu10k1x_midi_output_trigger,
1488};
1489
1490static const struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1491{
1492        .open =         snd_emu10k1x_midi_input_open,
1493        .close =        snd_emu10k1x_midi_input_close,
1494        .trigger =      snd_emu10k1x_midi_input_trigger,
1495};
1496
1497static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1498{
1499        struct emu10k1x_midi *midi = rmidi->private_data;
1500        midi->interrupt = NULL;
1501        midi->rmidi = NULL;
1502}
1503
1504static int emu10k1x_midi_init(struct emu10k1x *emu,
1505                              struct emu10k1x_midi *midi, int device,
1506                              char *name)
1507{
1508        struct snd_rawmidi *rmidi;
1509        int err;
1510
1511        if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1512                return err;
1513        midi->emu = emu;
1514        spin_lock_init(&midi->open_lock);
1515        spin_lock_init(&midi->input_lock);
1516        spin_lock_init(&midi->output_lock);
1517        strcpy(rmidi->name, name);
1518        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1519        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1520        rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1521                             SNDRV_RAWMIDI_INFO_INPUT |
1522                             SNDRV_RAWMIDI_INFO_DUPLEX;
1523        rmidi->private_data = midi;
1524        rmidi->private_free = snd_emu10k1x_midi_free;
1525        midi->rmidi = rmidi;
1526        return 0;
1527}
1528
1529static int snd_emu10k1x_midi(struct emu10k1x *emu)
1530{
1531        struct emu10k1x_midi *midi = &emu->midi;
1532        int err;
1533
1534        if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1535                return err;
1536
1537        midi->tx_enable = INTE_MIDITXENABLE;
1538        midi->rx_enable = INTE_MIDIRXENABLE;
1539        midi->port = MUDATA;
1540        midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1541        midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1542        midi->interrupt = snd_emu10k1x_midi_interrupt;
1543        return 0;
1544}
1545
1546static int snd_emu10k1x_probe(struct pci_dev *pci,
1547                              const struct pci_device_id *pci_id)
1548{
1549        static int dev;
1550        struct snd_card *card;
1551        struct emu10k1x *chip;
1552        int err;
1553
1554        if (dev >= SNDRV_CARDS)
1555                return -ENODEV;
1556        if (!enable[dev]) {
1557                dev++;
1558                return -ENOENT;
1559        }
1560
1561        err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1562                           0, &card);
1563        if (err < 0)
1564                return err;
1565
1566        if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1567                snd_card_free(card);
1568                return err;
1569        }
1570
1571        if ((err = snd_emu10k1x_pcm(chip, 0)) < 0) {
1572                snd_card_free(card);
1573                return err;
1574        }
1575        if ((err = snd_emu10k1x_pcm(chip, 1)) < 0) {
1576                snd_card_free(card);
1577                return err;
1578        }
1579        if ((err = snd_emu10k1x_pcm(chip, 2)) < 0) {
1580                snd_card_free(card);
1581                return err;
1582        }
1583
1584        if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1585                snd_card_free(card);
1586                return err;
1587        }
1588
1589        if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1590                snd_card_free(card);
1591                return err;
1592        }
1593        
1594        if ((err = snd_emu10k1x_midi(chip)) < 0) {
1595                snd_card_free(card);
1596                return err;
1597        }
1598
1599        snd_emu10k1x_proc_init(chip);
1600
1601        strcpy(card->driver, "EMU10K1X");
1602        strcpy(card->shortname, "Dell Sound Blaster Live!");
1603        sprintf(card->longname, "%s at 0x%lx irq %i",
1604                card->shortname, chip->port, chip->irq);
1605
1606        if ((err = snd_card_register(card)) < 0) {
1607                snd_card_free(card);
1608                return err;
1609        }
1610
1611        pci_set_drvdata(pci, card);
1612        dev++;
1613        return 0;
1614}
1615
1616static void snd_emu10k1x_remove(struct pci_dev *pci)
1617{
1618        snd_card_free(pci_get_drvdata(pci));
1619}
1620
1621// PCI IDs
1622static const struct pci_device_id snd_emu10k1x_ids[] = {
1623        { PCI_VDEVICE(CREATIVE, 0x0006), 0 },   /* Dell OEM version (EMU10K1) */
1624        { 0, }
1625};
1626MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1627
1628// pci_driver definition
1629static struct pci_driver emu10k1x_driver = {
1630        .name = KBUILD_MODNAME,
1631        .id_table = snd_emu10k1x_ids,
1632        .probe = snd_emu10k1x_probe,
1633        .remove = snd_emu10k1x_remove,
1634};
1635
1636module_pci_driver(emu10k1x_driver);
1637