linux-bk/sound/pci/als4000.c
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   1/*
   2 *  card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
   3 *  Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
   4 *                        Jaroslav Kysela <perex@suse.cz>
   5 *  Copyright (C) 2002 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
   6 *
   7 *  Framework borrowed from Massimo Piccioni's card-als100.c.
   8 *
   9 * NOTES
  10 *
  11 *  Since Avance does not provide any meaningful documentation, and I
  12 *  bought an ALS4000 based soundcard, I was forced to base this driver
  13 *  on reverse engineering.
  14 *
  15 *  Note: this is no longer true. Pretty verbose chip docu (ALS4000a.PDF)
  16 *  can be found on the ALSA web site.
  17 *
  18 *  The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
  19 *  ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport 
  20 *  interface. These subsystems can be mapped into ISA io-port space, 
  21 *  using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ 
  22 *  services to the subsystems.
  23 * 
  24 * While ALS4000 is very similar to a SoundBlaster, the differences in
  25 * DMA and capturing require more changes to the SoundBlaster than
  26 * desirable, so I made this separate driver.
  27 * 
  28 * The ALS4000 can do real full duplex playback/capture.
  29 *
  30 * FMDAC:
  31 * - 0x4f -> port 0x14
  32 * - port 0x15 |= 1
  33 *
  34 * Enable/disable 3D sound:
  35 * - 0x50 -> port 0x14
  36 * - change bit 6 (0x40) of port 0x15
  37 *
  38 * Set QSound:
  39 * - 0xdb -> port 0x14
  40 * - set port 0x15:
  41 *   0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
  42 *
  43 * Set KSound:
  44 * - value -> some port 0x0c0d
  45 *
  46 *  This program is free software; you can redistribute it and/or modify
  47 *  it under the terms of the GNU General Public License as published by
  48 *  the Free Software Foundation; either version 2 of the License, or
  49 *  (at your option) any later version.
  50 *
  51 *  This program is distributed in the hope that it will be useful,
  52 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  53 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  54 *  GNU General Public License for more details.
  55
  56 *  You should have received a copy of the GNU General Public License
  57 *  along with this program; if not, write to the Free Software
  58 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  59 */
  60
  61#include <sound/driver.h>
  62#include <asm/io.h>
  63#include <linux/init.h>
  64#include <linux/pci.h>
  65#include <linux/slab.h>
  66#include <linux/gameport.h>
  67#include <linux/moduleparam.h>
  68#include <sound/core.h>
  69#include <sound/pcm.h>
  70#include <sound/rawmidi.h>
  71#include <sound/mpu401.h>
  72#include <sound/opl3.h>
  73#include <sound/sb.h>
  74#include <sound/initval.h>
  75
  76MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
  77MODULE_DESCRIPTION("Avance Logic ALS4000");
  78MODULE_LICENSE("GPL");
  79MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
  80
  81#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  82#define SUPPORT_JOYSTICK 1
  83#endif
  84
  85static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  86static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  87static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  88#ifdef SUPPORT_JOYSTICK
  89static int joystick_port[SNDRV_CARDS];
  90#endif
  91
  92module_param_array(index, int, NULL, 0444);
  93MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
  94module_param_array(id, charp, NULL, 0444);
  95MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
  96module_param_array(enable, bool, NULL, 0444);
  97MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
  98#ifdef SUPPORT_JOYSTICK
  99module_param_array(joystick_port, int, NULL, 0444);
 100MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 101#endif
 102
 103typedef struct {
 104        struct pci_dev *pci;
 105        unsigned long gcr;
 106#ifdef SUPPORT_JOYSTICK
 107        struct gameport gameport;
 108        struct resource *res_joystick;
 109#endif
 110} snd_card_als4000_t;
 111
 112static struct pci_device_id snd_als4000_ids[] = {
 113        { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 114        { 0, }
 115};
 116
 117MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 118
 119static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
 120{
 121        outb(reg, port+0x0c);
 122        outl(val, port+0x08);
 123}
 124
 125static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
 126{
 127        snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
 128}       
 129
 130static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
 131{
 132        outb(reg, port+0x0c);
 133        return inl(port+0x08);
 134}
 135
 136static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
 137{
 138        return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 139}
 140
 141static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
 142{
 143        if (!(chip->mode & SB_RATE_LOCK)) {
 144                snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 145                snd_sbdsp_command(chip, rate>>8);
 146                snd_sbdsp_command(chip, rate);
 147        }
 148}
 149
 150static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 151{
 152        snd_als4000_gcr_write(chip, 0xa2, addr);
 153        snd_als4000_gcr_write(chip, 0xa3, (size-1));
 154}
 155
 156static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 157{
 158        snd_als4000_gcr_write(chip, 0x91, addr);
 159        snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 160}
 161
 162#define ALS4000_FORMAT_SIGNED   (1<<0)
 163#define ALS4000_FORMAT_16BIT    (1<<1)
 164#define ALS4000_FORMAT_STEREO   (1<<2)
 165
 166static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
 167{
 168        int result;
 169
 170        result = 0;
 171        if (snd_pcm_format_signed(runtime->format))
 172                result |= ALS4000_FORMAT_SIGNED;
 173        if (snd_pcm_format_physical_width(runtime->format) == 16)
 174                result |= ALS4000_FORMAT_16BIT;
 175        if (runtime->channels > 1)
 176                result |= ALS4000_FORMAT_STEREO;
 177        return result;
 178}
 179
 180/* structure for setting up playback */
 181static struct {
 182        unsigned char dsp_cmd, dma_on, dma_off, format;
 183} playback_cmd_vals[]={
 184/* ALS4000_FORMAT_U8_MONO */
 185{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 186/* ALS4000_FORMAT_S8_MONO */    
 187{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 188/* ALS4000_FORMAT_U16L_MONO */
 189{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 190/* ALS4000_FORMAT_S16L_MONO */
 191{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 192/* ALS4000_FORMAT_U8_STEREO */
 193{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 194/* ALS4000_FORMAT_S8_STEREO */  
 195{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 196/* ALS4000_FORMAT_U16L_STEREO */
 197{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 198/* ALS4000_FORMAT_S16L_STEREO */
 199{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 200};
 201#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 202
 203/* structure for setting up capture */
 204enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 205static unsigned char capture_cmd_vals[]=
 206{
 207CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 208CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */    
 209CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 210CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 211CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 212CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */  
 213CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 214CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 215};      
 216#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 217
 218static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
 219                                 snd_pcm_hw_params_t * hw_params)
 220{
 221        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 222}
 223
 224static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
 225{
 226        snd_pcm_lib_free_pages(substream);
 227        return 0;
 228}
 229
 230static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
 231{
 232        unsigned long flags;
 233        sb_t *chip = snd_pcm_substream_chip(substream);
 234        snd_pcm_runtime_t *runtime = substream->runtime;
 235        unsigned long size;
 236        unsigned count;
 237
 238        chip->capture_format = snd_als4000_get_format(runtime);
 239                
 240        size = snd_pcm_lib_buffer_bytes(substream);
 241        count = snd_pcm_lib_period_bytes(substream);
 242        
 243        if (chip->capture_format & ALS4000_FORMAT_16BIT)
 244                count >>=1;
 245        count--;
 246
 247        spin_lock_irqsave(&chip->reg_lock, flags);
 248        snd_als4000_set_rate(chip, runtime->rate);
 249        snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 250        spin_unlock_irqrestore(&chip->reg_lock, flags);
 251        spin_lock_irqsave(&chip->mixer_lock, flags );
 252        snd_sbmixer_write(chip, 0xdc, count);
 253        snd_sbmixer_write(chip, 0xdd, count>>8);
 254        spin_unlock_irqrestore(&chip->mixer_lock, flags );
 255        return 0;
 256}
 257
 258static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
 259{
 260        unsigned long flags;
 261        sb_t *chip = snd_pcm_substream_chip(substream);
 262        snd_pcm_runtime_t *runtime = substream->runtime;
 263        unsigned long size;
 264        unsigned count;
 265
 266        chip->playback_format = snd_als4000_get_format(runtime);
 267        
 268        size = snd_pcm_lib_buffer_bytes(substream);
 269        count = snd_pcm_lib_period_bytes(substream);
 270        
 271        if (chip->playback_format & ALS4000_FORMAT_16BIT)
 272                count >>=1;
 273        count--;
 274        
 275        /* FIXME: from second playback on, there's a lot more clicks and pops
 276         * involved here than on first playback. Fiddling with
 277         * tons of different settings didn't help (DMA, speaker on/off,
 278         * reordering, ...). Something seems to get enabled on playback
 279         * that I haven't found out how to disable again, which then causes
 280         * the switching pops to reach the speakers the next time here. */
 281        spin_lock_irqsave(&chip->reg_lock, flags);
 282        snd_als4000_set_rate(chip, runtime->rate);
 283        snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 284        
 285        /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 286        /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 287        snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 288        snd_sbdsp_command(chip, playback_cmd(chip).format);
 289        snd_sbdsp_command(chip, count);
 290        snd_sbdsp_command(chip, count>>8);
 291        snd_sbdsp_command(chip, playback_cmd(chip).dma_off);    
 292        spin_unlock_irqrestore(&chip->reg_lock, flags);
 293        
 294        return 0;
 295}
 296
 297static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
 298{
 299        sb_t *chip = snd_pcm_substream_chip(substream);
 300        int result = 0;
 301        
 302        spin_lock(&chip->mixer_lock);
 303        if (cmd == SNDRV_PCM_TRIGGER_START) {
 304                chip->mode |= SB_RATE_LOCK_CAPTURE;
 305                snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
 306        } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 307                chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 308                snd_sbmixer_write(chip, 0xde, 0);
 309        } else {
 310                result = -EINVAL;
 311        }
 312        spin_unlock(&chip->mixer_lock);
 313        return result;
 314}
 315
 316static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
 317{
 318        sb_t *chip = snd_pcm_substream_chip(substream);
 319        int result = 0;
 320
 321        spin_lock(&chip->reg_lock);
 322        if (cmd == SNDRV_PCM_TRIGGER_START) {
 323                chip->mode |= SB_RATE_LOCK_PLAYBACK;
 324                snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 325        } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 326                snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 327                chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 328        } else {
 329                result = -EINVAL;
 330        }
 331        spin_unlock(&chip->reg_lock);
 332        return result;
 333}
 334
 335static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
 336{
 337        sb_t *chip = snd_pcm_substream_chip(substream);
 338        unsigned int result;
 339
 340        spin_lock(&chip->reg_lock);     
 341        result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 342        spin_unlock(&chip->reg_lock);
 343        return bytes_to_frames( substream->runtime, result );
 344}
 345
 346static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
 347{
 348        sb_t *chip = snd_pcm_substream_chip(substream);
 349        unsigned result;
 350
 351        spin_lock(&chip->reg_lock);     
 352        result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 353        spin_unlock(&chip->reg_lock);
 354        return bytes_to_frames( substream->runtime, result );
 355}
 356
 357static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 358{
 359        sb_t *chip = dev_id;
 360        unsigned gcr_status;
 361        unsigned sb_status;
 362
 363        /* find out which bit of the ALS4000 produced the interrupt */
 364        gcr_status = inb(chip->alt_port + 0xe);
 365
 366        if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 367                snd_pcm_period_elapsed(chip->playback_substream);
 368        if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 369                snd_pcm_period_elapsed(chip->capture_substream);
 370        if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 371                snd_mpu401_uart_interrupt(irq, chip->rmidi, regs);
 372        /* release the gcr */
 373        outb(gcr_status, chip->alt_port + 0xe);
 374        
 375        spin_lock(&chip->mixer_lock);
 376        sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 377        spin_unlock(&chip->mixer_lock);
 378        
 379        if (sb_status & SB_IRQTYPE_8BIT) 
 380                snd_sb_ack_8bit(chip);
 381        if (sb_status & SB_IRQTYPE_16BIT) 
 382                snd_sb_ack_16bit(chip);
 383        if (sb_status & SB_IRQTYPE_MPUIN)
 384                inb(chip->mpu_port);
 385        if (sb_status & 0x20)
 386                inb(SBP(chip, RESET));
 387        return IRQ_HANDLED;
 388}
 389
 390/*****************************************************************/
 391
 392static snd_pcm_hardware_t snd_als4000_playback =
 393{
 394        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 395                                 SNDRV_PCM_INFO_MMAP_VALID),
 396        .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 397                                SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 398        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 399        .rate_min =             4000,
 400        .rate_max =             48000,
 401        .channels_min =         1,
 402        .channels_max =         2,
 403        .buffer_bytes_max =     65536,
 404        .period_bytes_min =     64,
 405        .period_bytes_max =     65536,
 406        .periods_min =          1,
 407        .periods_max =          1024,
 408        .fifo_size =            0
 409};
 410
 411static snd_pcm_hardware_t snd_als4000_capture =
 412{
 413        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 414                                 SNDRV_PCM_INFO_MMAP_VALID),
 415        .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 416                                SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 417        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 418        .rate_min =             4000,
 419        .rate_max =             48000,
 420        .channels_min =         1,
 421        .channels_max =         2,
 422        .buffer_bytes_max =     65536,
 423        .period_bytes_min =     64,
 424        .period_bytes_max =     65536,
 425        .periods_min =          1,
 426        .periods_max =          1024,
 427        .fifo_size =            0
 428};
 429
 430/*****************************************************************/
 431
 432static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
 433{
 434        sb_t *chip = snd_pcm_substream_chip(substream);
 435        snd_pcm_runtime_t *runtime = substream->runtime;
 436
 437        chip->playback_substream = substream;
 438        runtime->hw = snd_als4000_playback;
 439        return 0;
 440}
 441
 442static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
 443{
 444        sb_t *chip = snd_pcm_substream_chip(substream);
 445
 446        chip->playback_substream = NULL;
 447        snd_pcm_lib_free_pages(substream);
 448        return 0;
 449}
 450
 451static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
 452{
 453        sb_t *chip = snd_pcm_substream_chip(substream);
 454        snd_pcm_runtime_t *runtime = substream->runtime;
 455
 456        chip->capture_substream = substream;
 457        runtime->hw = snd_als4000_capture;
 458        return 0;
 459}
 460
 461static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
 462{
 463        sb_t *chip = snd_pcm_substream_chip(substream);
 464
 465        chip->capture_substream = NULL;
 466        snd_pcm_lib_free_pages(substream);
 467        return 0;
 468}
 469
 470/******************************************************************/
 471
 472static snd_pcm_ops_t snd_als4000_playback_ops = {
 473        .open =         snd_als4000_playback_open,
 474        .close =        snd_als4000_playback_close,
 475        .ioctl =        snd_pcm_lib_ioctl,
 476        .hw_params =    snd_als4000_hw_params,
 477        .hw_free =      snd_als4000_hw_free,
 478        .prepare =      snd_als4000_playback_prepare,
 479        .trigger =      snd_als4000_playback_trigger,
 480        .pointer =      snd_als4000_playback_pointer
 481};
 482
 483static snd_pcm_ops_t snd_als4000_capture_ops = {
 484        .open =         snd_als4000_capture_open,
 485        .close =        snd_als4000_capture_close,
 486        .ioctl =        snd_pcm_lib_ioctl,
 487        .hw_params =    snd_als4000_hw_params,
 488        .hw_free =      snd_als4000_hw_free,
 489        .prepare =      snd_als4000_capture_prepare,
 490        .trigger =      snd_als4000_capture_trigger,
 491        .pointer =      snd_als4000_capture_pointer
 492};
 493
 494static void snd_als4000_pcm_free(snd_pcm_t *pcm)
 495{
 496        sb_t *chip = pcm->private_data;
 497        chip->pcm = NULL;
 498        snd_pcm_lib_preallocate_free_for_all(pcm);
 499}
 500
 501static int __devinit snd_als4000_pcm(sb_t *chip, int device)
 502{
 503        snd_pcm_t *pcm;
 504        int err;
 505
 506        if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 507                return err;
 508        pcm->private_free = snd_als4000_pcm_free;
 509        pcm->private_data = chip;
 510        pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 511        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 512        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 513
 514        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 515                                              64*1024, 64*1024);
 516
 517        chip->pcm = pcm;
 518
 519        return 0;
 520}
 521
 522/******************************************************************/
 523
 524static void snd_als4000_set_addr(unsigned long gcr,
 525                                        unsigned int sb,
 526                                        unsigned int mpu,
 527                                        unsigned int opl,
 528                                        unsigned int game)
 529{
 530        u32 confA = 0;
 531        u32 confB = 0;
 532
 533        if (mpu > 0)
 534                confB |= (mpu | 1) << 16;
 535        if (sb > 0)
 536                confB |= (sb | 1);
 537        if (game > 0)
 538                confA |= (game | 1) << 16;
 539        if (opl > 0)    
 540                confA |= (opl | 1);
 541        snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 542        snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 543}
 544
 545static void __devinit snd_als4000_configure(sb_t *chip)
 546{
 547        unsigned tmp;
 548        int i;
 549
 550        /* do some more configuration */
 551        spin_lock_irq(&chip->mixer_lock);
 552        tmp = snd_sbmixer_read(chip, 0xc0);
 553        snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 554        /* always select DMA channel 0, since we do not actually use DMA */
 555        snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 556        snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 557        spin_unlock_irq(&chip->mixer_lock);
 558        
 559        spin_lock_irq(&chip->reg_lock);
 560        /* magic number. Enables interrupts(?) */
 561        snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 562        for(i = 0x91; i <= 0x96; ++i)
 563                snd_als4000_gcr_write(chip, i, 0);
 564        
 565        snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 566        spin_unlock_irq(&chip->reg_lock);
 567}
 568
 569static void snd_card_als4000_free( snd_card_t *card )
 570{
 571        snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
 572        /* make sure that interrupts are disabled */
 573        snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 574        /* free resources */
 575#ifdef SUPPORT_JOYSTICK
 576        if (acard->res_joystick) {
 577                if (acard->gameport.io)
 578                        gameport_unregister_port(&acard->gameport);
 579                snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
 580                release_resource(acard->res_joystick);
 581                kfree_nocheck(acard->res_joystick);
 582        }
 583#endif
 584        pci_release_regions(acard->pci);
 585        pci_disable_device(acard->pci);
 586}
 587
 588static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 589                                          const struct pci_device_id *pci_id)
 590{
 591        static int dev;
 592        snd_card_t *card;
 593        snd_card_als4000_t *acard;
 594        unsigned long gcr;
 595        sb_t *chip;
 596        opl3_t *opl3;
 597        unsigned short word;
 598        int err;
 599        int joystick = 0;
 600
 601        if (dev >= SNDRV_CARDS)
 602                return -ENODEV;
 603        if (!enable[dev]) {
 604                dev++;
 605                return -ENOENT;
 606        }
 607
 608        /* enable PCI device */
 609        if ((err = pci_enable_device(pci)) < 0) {
 610                return err;
 611        }
 612        /* check, if we can restrict PCI DMA transfers to 24 bits */
 613        if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
 614            pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
 615                snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
 616                pci_disable_device(pci);
 617                return -ENXIO;
 618        }
 619
 620        if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 621                pci_disable_device(pci);
 622                return err;
 623        }
 624        gcr = pci_resource_start(pci, 0);
 625
 626        pci_read_config_word(pci, PCI_COMMAND, &word);
 627        pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 628        pci_set_master(pci);
 629        
 630        card = snd_card_new(index[dev], id[dev], THIS_MODULE, 
 631                            sizeof( snd_card_als4000_t ) );
 632        if (card == NULL) {
 633                pci_release_regions(pci);
 634                pci_disable_device(pci);
 635                return -ENOMEM;
 636        }
 637
 638        acard = (snd_card_als4000_t *)card->private_data;
 639        acard->pci = pci;
 640        acard->gcr = gcr;
 641        card->private_free = snd_card_als4000_free;
 642
 643        /* disable all legacy ISA stuff except for joystick */
 644#ifdef SUPPORT_JOYSTICK
 645        if (joystick_port[dev] == 1) {
 646                /* auto-detect */
 647                long p;
 648                for (p = 0x200; p <= 0x218; p += 8) {
 649                        if ((acard->res_joystick = request_region(p, 8, "ALS4000 gameport")) != NULL) {
 650                                joystick_port[dev] = p;
 651                                break;
 652                        }
 653                }
 654        } else if (joystick_port[dev] > 0)
 655                acard->res_joystick = request_region(joystick_port[dev], 8, "ALS4000 gameport");
 656        if (acard->res_joystick)
 657                joystick = joystick_port[dev];
 658        else
 659                joystick = 0;
 660#endif
 661        snd_als4000_set_addr(gcr, 0, 0, 0, joystick);
 662        
 663        if ((err = snd_sbdsp_create(card,
 664                                    gcr + 0x10,
 665                                    pci->irq,
 666                                    snd_als4000_interrupt,
 667                                    -1,
 668                                    -1,
 669                                    SB_HW_ALS4000,
 670                                    &chip)) < 0) {
 671                snd_card_free(card);
 672                return err;
 673        }
 674
 675        chip->pci = pci;
 676        chip->alt_port = gcr;
 677        snd_card_set_dev(card, &pci->dev);
 678
 679        snd_als4000_configure(chip);
 680
 681        strcpy(card->driver, "ALS4000");
 682        strcpy(card->shortname, "Avance Logic ALS4000");
 683        sprintf(card->longname, "%s at 0x%lx, irq %i",
 684                card->shortname, chip->alt_port, chip->irq);
 685
 686        if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 687                                        gcr+0x30, 1, pci->irq, 0,
 688                                        &chip->rmidi)) < 0) {
 689                snd_card_free(card);
 690                printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
 691                return err;
 692        }
 693
 694        if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 695                snd_card_free(card);
 696                return err;
 697        }
 698        if ((err = snd_sbmixer_new(chip)) < 0) {
 699                snd_card_free(card);
 700                return err;
 701        }           
 702
 703        if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 704                            OPL3_HW_AUTO, 1, &opl3) < 0) {
 705                printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
 706                           gcr+0x10, gcr+0x12 );
 707        } else {
 708                if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 709                        snd_card_free(card);
 710                        return err;
 711                }
 712        }
 713
 714#ifdef SUPPORT_JOYSTICK
 715        if (acard->res_joystick) {
 716                acard->gameport.io = joystick;
 717                gameport_register_port(&acard->gameport);
 718        }
 719#endif
 720
 721        if ((err = snd_card_register(card)) < 0) {
 722                snd_card_free(card);
 723                return err;
 724        }
 725        pci_set_drvdata(pci, card);
 726        dev++;
 727        return 0;
 728}
 729
 730static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 731{
 732        snd_card_free(pci_get_drvdata(pci));
 733        pci_set_drvdata(pci, NULL);
 734}
 735
 736static struct pci_driver driver = {
 737        .name = "ALS4000",
 738        .id_table = snd_als4000_ids,
 739        .probe = snd_card_als4000_probe,
 740        .remove = __devexit_p(snd_card_als4000_remove),
 741};
 742
 743static int __init alsa_card_als4000_init(void)
 744{
 745        return pci_module_init(&driver);
 746}
 747
 748static void __exit alsa_card_als4000_exit(void)
 749{
 750        pci_unregister_driver(&driver);
 751}
 752
 753module_init(alsa_card_als4000_init)
 754module_exit(alsa_card_als4000_exit)
 755
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