sound/pci/als4000.c

   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
  76 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
  77 MODULE_DESCRIPTION("Avance Logic ALS4000");
  78 MODULE_LICENSE("GPL");
  79 MODULE_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
  85 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  86 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  87 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  88 #ifdef SUPPORT_JOYSTICK
  89 static int joystick_port[SNDRV_CARDS];
  90 #endif
  91 static int boot_devs;
  92
  93 module_param_array(index, int, boot_devs, 0444);
  94 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
  95 module_param_array(id, charp, boot_devs, 0444);
  96 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
  97 module_param_array(enable, bool, boot_devs, 0444);
  98 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
  99 #ifdef SUPPORT_JOYSTICK
 100 module_param_array(joystick_port, int, boot_devs, 0444);
 101 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 102 #endif
 103
 104 typedef struct {
 105         struct pci_dev *pci;
 106         unsigned long gcr;
 107 #ifdef SUPPORT_JOYSTICK
 108         struct gameport gameport;
 109         struct resource *res_joystick;
 110 #endif
 111 } snd_card_als4000_t;
 112
 113 static struct pci_device_id snd_als4000_ids[] = {
 114         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 115         { 0, }
 116 };
 117
 118 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 119
 120 static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
 121 {
 122         outb(reg, port+0x0c);
 123         outl(val, port+0x08);
 124 }
 125
 126 static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
 127 {
 128         snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
 129 }
 130
 131 static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
 132 {
 133         outb(reg, port+0x0c);
 134         return inl(port+0x08);
 135 }
 136
 137 static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
 138 {
 139         return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 140 }
 141
 142 static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
 143 {
 144         if (!(chip->mode & SB_RATE_LOCK)) {
 145                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 146                 snd_sbdsp_command(chip, rate>>8);
 147                 snd_sbdsp_command(chip, rate);
 148         }
 149 }
 150
 151 static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 152 {
 153         snd_als4000_gcr_write(chip, 0xa2, addr);
 154         snd_als4000_gcr_write(chip, 0xa3, (size-1));
 155 }
 156
 157 static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 158 {
 159         snd_als4000_gcr_write(chip, 0x91, addr);
 160         snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 161 }
 162
 163 #define ALS4000_FORMAT_SIGNED   (1<<0)
 164 #define ALS4000_FORMAT_16BIT    (1<<1)
 165 #define ALS4000_FORMAT_STEREO   (1<<2)
 166
 167 static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
 168 {
 169         int result;
 170
 171         result = 0;
 172         if (snd_pcm_format_signed(runtime->format))
 173                 result |= ALS4000_FORMAT_SIGNED;
 174         if (snd_pcm_format_physical_width(runtime->format) == 16)
 175                 result |= ALS4000_FORMAT_16BIT;
 176         if (runtime->channels > 1)
 177                 result |= ALS4000_FORMAT_STEREO;
 178         return result;
 179 }
 180
 181 /* structure for setting up playback */
 182 static struct {
 183         unsigned char dsp_cmd, dma_on, dma_off, format;
 184 } playback_cmd_vals[]={
 185 /* ALS4000_FORMAT_U8_MONO */
 186 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 187 /* ALS4000_FORMAT_S8_MONO */
 188 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 189 /* ALS4000_FORMAT_U16L_MONO */
 190 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 191 /* ALS4000_FORMAT_S16L_MONO */
 192 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 193 /* ALS4000_FORMAT_U8_STEREO */
 194 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 195 /* ALS4000_FORMAT_S8_STEREO */
 196 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 197 /* ALS4000_FORMAT_U16L_STEREO */
 198 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 199 /* ALS4000_FORMAT_S16L_STEREO */
 200 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 201 };
 202 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 203
 204 /* structure for setting up capture */
 205 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 206 static unsigned char capture_cmd_vals[]=
 207 {
 208 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 209 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 210 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 211 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 212 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 213 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 214 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 215 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 216 };
 217 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 218
 219 static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
 220                                  snd_pcm_hw_params_t * hw_params)
 221 {
 222         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 223 }
 224
 225 static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
 226 {
 227         snd_pcm_lib_free_pages(substream);
 228         return 0;
 229 }
 230
 231 static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
 232 {
 233         unsigned long flags;
 234         sb_t *chip = snd_pcm_substream_chip(substream);
 235         snd_pcm_runtime_t *runtime = substream->runtime;
 236         unsigned long size;
 237         unsigned count;
 238
 239         chip->capture_format = snd_als4000_get_format(runtime);
 240
 241         size = snd_pcm_lib_buffer_bytes(substream);
 242         count = snd_pcm_lib_period_bytes(substream);
 243
 244         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 245                 count >>=1;
 246         count--;
 247
 248         spin_lock_irqsave(&chip->reg_lock, flags);
 249         snd_als4000_set_rate(chip, runtime->rate);
 250         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 251         spin_unlock_irqrestore(&chip->reg_lock, flags);
 252         spin_lock_irqsave(&chip->mixer_lock, flags );
 253         snd_sbmixer_write(chip, 0xdc, count);
 254         snd_sbmixer_write(chip, 0xdd, count>>8);
 255         spin_unlock_irqrestore(&chip->mixer_lock, flags );
 256         return 0;
 257 }
 258
 259 static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
 260 {
 261         unsigned long flags;
 262         sb_t *chip = snd_pcm_substream_chip(substream);
 263         snd_pcm_runtime_t *runtime = substream->runtime;
 264         unsigned long size;
 265         unsigned count;
 266
 267         chip->playback_format = snd_als4000_get_format(runtime);
 268
 269         size = snd_pcm_lib_buffer_bytes(substream);
 270         count = snd_pcm_lib_period_bytes(substream);
 271
 272         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 273                 count >>=1;
 274         count--;
 275
 276         /* FIXME: from second playback on, there's a lot more clicks and pops
 277          * involved here than on first playback. Fiddling with
 278          * tons of different settings didn't help (DMA, speaker on/off,
 279          * reordering, ...). Something seems to get enabled on playback
 280          * that I haven't found out how to disable again, which then causes
 281          * the switching pops to reach the speakers the next time here. */
 282         spin_lock_irqsave(&chip->reg_lock, flags);
 283         snd_als4000_set_rate(chip, runtime->rate);
 284         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 285
 286         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 287         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 288         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 289         snd_sbdsp_command(chip, playback_cmd(chip).format);
 290         snd_sbdsp_command(chip, count);
 291         snd_sbdsp_command(chip, count>>8);
 292         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 293         spin_unlock_irqrestore(&chip->reg_lock, flags);
 294
 295         return 0;
 296 }
 297
 298 static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
 299 {
 300         sb_t *chip = snd_pcm_substream_chip(substream);
 301         int result = 0;
 302
 303         spin_lock(&chip->mixer_lock);
 304         if (cmd == SNDRV_PCM_TRIGGER_START) {
 305                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 306                 snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
 307         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 308                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 309                 snd_sbmixer_write(chip, 0xde, 0);
 310         } else {
 311                 result = -EINVAL;
 312         }
 313         spin_unlock(&chip->mixer_lock);
 314         return result;
 315 }
 316
 317 static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
 318 {
 319         sb_t *chip = snd_pcm_substream_chip(substream);
 320         int result = 0;
 321
 322         spin_lock(&chip->reg_lock);
 323         if (cmd == SNDRV_PCM_TRIGGER_START) {
 324                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 325                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 326         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 327                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 328                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 329         } else {
 330                 result = -EINVAL;
 331         }
 332         spin_unlock(&chip->reg_lock);
 333         return result;
 334 }
 335
 336 static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
 337 {
 338         sb_t *chip = snd_pcm_substream_chip(substream);
 339         unsigned int result;
 340
 341         spin_lock(&chip->reg_lock);
 342         result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 343         spin_unlock(&chip->reg_lock);
 344         return bytes_to_frames( substream->runtime, result );
 345 }
 346
 347 static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
 348 {
 349         sb_t *chip = snd_pcm_substream_chip(substream);
 350         unsigned result;
 351
 352         spin_lock(&chip->reg_lock);
 353         result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 354         spin_unlock(&chip->reg_lock);
 355         return bytes_to_frames( substream->runtime, result );
 356 }
 357
 358 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 359 {
 360         sb_t *chip = dev_id;
 361         unsigned gcr_status;
 362         unsigned sb_status;
 363
 364         /* find out which bit of the ALS4000 produced the interrupt */
 365         gcr_status = inb(chip->alt_port + 0xe);
 366
 367         if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 368                 snd_pcm_period_elapsed(chip->playback_substream);
 369         if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 370                 snd_pcm_period_elapsed(chip->capture_substream);
 371         if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 372                 snd_mpu401_uart_interrupt(irq, chip->rmidi, regs);
 373         /* release the gcr */
 374         outb(gcr_status, chip->alt_port + 0xe);
 375
 376         spin_lock(&chip->mixer_lock);
 377         sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 378         spin_unlock(&chip->mixer_lock);
 379
 380         if (sb_status & SB_IRQTYPE_8BIT)
 381                 snd_sb_ack_8bit(chip);
 382         if (sb_status & SB_IRQTYPE_16BIT)
 383                 snd_sb_ack_16bit(chip);
 384         if (sb_status & SB_IRQTYPE_MPUIN)
 385                 inb(chip->mpu_port);
 386         if (sb_status & 0x20)
 387                 inb(SBP(chip, RESET));
 388         return IRQ_HANDLED;
 389 }
 390
 391 /*****************************************************************/
 392
 393 static snd_pcm_hardware_t snd_als4000_playback =
 394 {
 395         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 396                                  SNDRV_PCM_INFO_MMAP_VALID),
 397         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 398                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 399         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 400         .rate_min =             4000,
 401         .rate_max =             48000,
 402         .channels_min =         1,
 403         .channels_max =         2,
 404         .buffer_bytes_max =     65536,
 405         .period_bytes_min =     64,
 406         .period_bytes_max =     65536,
 407         .periods_min =          1,
 408         .periods_max =          1024,
 409         .fifo_size =            0
 410 };
 411
 412 static snd_pcm_hardware_t snd_als4000_capture =
 413 {
 414         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 415                                  SNDRV_PCM_INFO_MMAP_VALID),
 416         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 417                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 418         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 419         .rate_min =             4000,
 420         .rate_max =             48000,
 421         .channels_min =         1,
 422         .channels_max =         2,
 423         .buffer_bytes_max =     65536,
 424         .period_bytes_min =     64,
 425         .period_bytes_max =     65536,
 426         .periods_min =          1,
 427         .periods_max =          1024,
 428         .fifo_size =            0
 429 };
 430
 431 /*****************************************************************/
 432
 433 static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
 434 {
 435         sb_t *chip = snd_pcm_substream_chip(substream);
 436         snd_pcm_runtime_t *runtime = substream->runtime;
 437
 438         chip->playback_substream = substream;
 439         runtime->hw = snd_als4000_playback;
 440         return 0;
 441 }
 442
 443 static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
 444 {
 445         sb_t *chip = snd_pcm_substream_chip(substream);
 446
 447         chip->playback_substream = NULL;
 448         snd_pcm_lib_free_pages(substream);
 449         return 0;
 450 }
 451
 452 static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
 453 {
 454         sb_t *chip = snd_pcm_substream_chip(substream);
 455         snd_pcm_runtime_t *runtime = substream->runtime;
 456
 457         chip->capture_substream = substream;
 458         runtime->hw = snd_als4000_capture;
 459         return 0;
 460 }
 461
 462 static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
 463 {
 464         sb_t *chip = snd_pcm_substream_chip(substream);
 465
 466         chip->capture_substream = NULL;
 467         snd_pcm_lib_free_pages(substream);
 468         return 0;
 469 }
 470
 471 /******************************************************************/
 472
 473 static snd_pcm_ops_t snd_als4000_playback_ops = {
 474         .open =         snd_als4000_playback_open,
 475         .close =        snd_als4000_playback_close,
 476         .ioctl =        snd_pcm_lib_ioctl,
 477         .hw_params =    snd_als4000_hw_params,
 478         .hw_free =      snd_als4000_hw_free,
 479         .prepare =      snd_als4000_playback_prepare,
 480         .trigger =      snd_als4000_playback_trigger,
 481         .pointer =      snd_als4000_playback_pointer
 482 };
 483
 484 static snd_pcm_ops_t snd_als4000_capture_ops = {
 485         .open =         snd_als4000_capture_open,
 486         .close =        snd_als4000_capture_close,
 487         .ioctl =        snd_pcm_lib_ioctl,
 488         .hw_params =    snd_als4000_hw_params,
 489         .hw_free =      snd_als4000_hw_free,
 490         .prepare =      snd_als4000_capture_prepare,
 491         .trigger =      snd_als4000_capture_trigger,
 492         .pointer =      snd_als4000_capture_pointer
 493 };
 494
 495 static void snd_als4000_pcm_free(snd_pcm_t *pcm)
 496 {
 497         sb_t *chip = pcm->private_data;
 498         chip->pcm = NULL;
 499         snd_pcm_lib_preallocate_free_for_all(pcm);
 500 }
 501
 502 static int __devinit snd_als4000_pcm(sb_t *chip, int device)
 503 {
 504         snd_pcm_t *pcm;
 505         int err;
 506
 507         if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 508                 return err;
 509         pcm->private_free = snd_als4000_pcm_free;
 510         pcm->private_data = chip;
 511         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 512         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 513         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 514
 515         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 516                                               64*1024, 64*1024);
 517
 518         chip->pcm = pcm;
 519
 520         return 0;
 521 }
 522
 523 /******************************************************************/
 524
 525 static void snd_als4000_set_addr(unsigned long gcr,
 526                                         unsigned int sb,
 527                                         unsigned int mpu,
 528                                         unsigned int opl,
 529                                         unsigned int game)
 530 {
 531         u32 confA = 0;
 532         u32 confB = 0;
 533
 534         if (mpu > 0)
 535                 confB |= (mpu | 1) << 16;
 536         if (sb > 0)
 537                 confB |= (sb | 1);
 538         if (game > 0)
 539                 confA |= (game | 1) << 16;
 540         if (opl > 0)
 541                 confA |= (opl | 1);
 542         snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 543         snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 544 }
 545
 546 static void __devinit snd_als4000_configure(sb_t *chip)
 547 {
 548         unsigned tmp;
 549         int i;
 550
 551         /* do some more configuration */
 552         spin_lock_irq(&chip->mixer_lock);
 553         tmp = snd_sbmixer_read(chip, 0xc0);
 554         snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 555         /* always select DMA channel 0, since we do not actually use DMA */
 556         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 557         snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 558         spin_unlock_irq(&chip->mixer_lock);
 559
 560         spin_lock_irq(&chip->reg_lock);
 561         /* magic number. Enables interrupts(?) */
 562         snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 563         for(i = 0x91; i <= 0x96; ++i)
 564                 snd_als4000_gcr_write(chip, i, 0);
 565
 566         snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 567         spin_unlock_irq(&chip->reg_lock);
 568 }
 569
 570 static void snd_card_als4000_free( snd_card_t *card )
 571 {
 572         snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
 573         /* make sure that interrupts are disabled */
 574         snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 575         /* free resources */
 576 #ifdef SUPPORT_JOYSTICK
 577         if (acard->res_joystick) {
 578                 if (acard->gameport.io)
 579                         gameport_unregister_port(&acard->gameport);
 580                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
 581                 release_resource(acard->res_joystick);
 582                 kfree_nocheck(acard->res_joystick);
 583         }
 584 #endif
 585         pci_release_regions(acard->pci);
 586 }
 587
 588 static 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                 return -ENXIO;
 617         }
 618
 619         if ((err = pci_request_regions(pci, "ALS4000")) < 0)
 620                 return err;
 621         gcr = pci_resource_start(pci, 0);
 622
 623         pci_read_config_word(pci, PCI_COMMAND, &word);
 624         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 625         pci_set_master(pci);
 626
 627         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 628                             sizeof( snd_card_als4000_t ) );
 629         if (card == NULL) {
 630                 pci_release_regions(pci);
 631                 return -ENOMEM;
 632         }
 633
 634         acard = (snd_card_als4000_t *)card->private_data;
 635         acard->pci = pci;
 636         acard->gcr = gcr;
 637         card->private_free = snd_card_als4000_free;
 638
 639         /* disable all legacy ISA stuff except for joystick */
 640 #ifdef SUPPORT_JOYSTICK
 641         if (joystick_port[dev] == 1) {
 642                 /* auto-detect */
 643                 long p;
 644                 for (p = 0x200; p <= 0x218; p += 8) {
 645                         if ((acard->res_joystick = request_region(p, 8, "ALS4000 gameport")) != NULL) {
 646                                 joystick_port[dev] = p;
 647                                 break;
 648                         }
 649                 }
 650         } else if (joystick_port[dev] > 0)
 651                 acard->res_joystick = request_region(joystick_port[dev], 8, "ALS4000 gameport");
 652         if (acard->res_joystick)
 653                 joystick = joystick_port[dev];
 654         else
 655                 joystick = 0;
 656 #endif
 657         snd_als4000_set_addr(gcr, 0, 0, 0, joystick);
 658
 659         if ((err = snd_sbdsp_create(card,
 660                                     gcr + 0x10,
 661                                     pci->irq,
 662                                     snd_als4000_interrupt,
 663                                     -1,
 664                                     -1,
 665                                     SB_HW_ALS4000,
 666                                     &chip)) < 0) {
 667                 snd_card_free(card);
 668                 return err;
 669         }
 670
 671         chip->pci = pci;
 672         chip->alt_port = gcr;
 673         snd_card_set_dev(card, &pci->dev);
 674
 675         snd_als4000_configure(chip);
 676
 677         strcpy(card->driver, "ALS4000");
 678         strcpy(card->shortname, "Avance Logic ALS4000");
 679         sprintf(card->longname, "%s at 0x%lx, irq %i",
 680                 card->shortname, chip->alt_port, chip->irq);
 681
 682         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 683                                         gcr+0x30, 1, pci->irq, 0,
 684                                         &chip->rmidi)) < 0) {
 685                 snd_card_free(card);
 686                 printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
 687                 return err;
 688         }
 689
 690         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 691                 snd_card_free(card);
 692                 return err;
 693         }
 694         if ((err = snd_sbmixer_new(chip)) < 0) {
 695                 snd_card_free(card);
 696                 return err;
 697         }
 698
 699         if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 700                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 701                 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
 702                            gcr+0x10, gcr+0x12 );
 703         } else {
 704                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 705                         snd_card_free(card);
 706                         return err;
 707                 }
 708         }
 709
 710 #ifdef SUPPORT_JOYSTICK
 711         if (acard->res_joystick) {
 712                 acard->gameport.io = joystick;
 713                 gameport_register_port(&acard->gameport);
 714         }
 715 #endif
 716
 717         if ((err = snd_card_register(card)) < 0) {
 718                 snd_card_free(card);
 719                 return err;
 720         }
 721         pci_set_drvdata(pci, card);
 722         dev++;
 723         return 0;
 724 }
 725
 726 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 727 {
 728         snd_card_free(pci_get_drvdata(pci));
 729         pci_set_drvdata(pci, NULL);
 730 }
 731
 732 static struct pci_driver driver = {
 733         .name = "ALS4000",
 734         .id_table = snd_als4000_ids,
 735         .probe = snd_card_als4000_probe,
 736         .remove = __devexit_p(snd_card_als4000_remove),
 737 };
 738
 739 static int __init alsa_card_als4000_init(void)
 740 {
 741         return pci_module_init(&driver);
 742 }
 743
 744 static void __exit alsa_card_als4000_exit(void)
 745 {
 746         pci_unregister_driver(&driver);
 747 }
 748
 749 module_init(alsa_card_als4000_init)
 750 module_exit(alsa_card_als4000_exit)