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_CLASSES("{sound}");
  80 MODULE_DEVICES("{{Avance Logic,ALS4000}}");
  81
  82 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  83 #define SUPPORT_JOYSTICK 1
  84 #endif
  85
  86 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  87 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  88 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  89 #ifdef SUPPORT_JOYSTICK
  90 static int joystick_port[SNDRV_CARDS];
  91 #endif
  92 static int boot_devs;
  93
  94 module_param_array(index, int, boot_devs, 0444);
  95 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
  96 MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
  97 module_param_array(id, charp, boot_devs, 0444);
  98 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
  99 MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
 100 module_param_array(enable, bool, boot_devs, 0444);
 101 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
 102 MODULE_PARM_SYNTAX(enable, SNDRV_INDEX_DESC);
 103 #ifdef SUPPORT_JOYSTICK
 104 module_param_array(joystick_port, int, boot_devs, 0444);
 105 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 106 MODULE_PARM_SYNTAX(joystick_port, SNDRV_ENABLED);
 107 #endif
 108
 109 #define chip_t sb_t
 110
 111 typedef struct {
 112         unsigned long gcr;
 113         struct resource *res_gcr;
 114 #ifdef SUPPORT_JOYSTICK
 115         struct gameport gameport;
 116         struct resource *res_joystick;
 117 #endif
 118 } snd_card_als4000_t;
 119
 120 static struct pci_device_id snd_als4000_ids[] = {
 121         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 122         { 0, }
 123 };
 124
 125 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 126
 127 static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
 128 {
 129         outb(reg, port+0x0c);
 130         outl(val, port+0x08);
 131 }
 132
 133 static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
 134 {
 135         snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
 136 }
 137
 138 static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
 139 {
 140         outb(reg, port+0x0c);
 141         return inl(port+0x08);
 142 }
 143
 144 static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
 145 {
 146         return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 147 }
 148
 149 static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
 150 {
 151         if (!(chip->mode & SB_RATE_LOCK)) {
 152                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 153                 snd_sbdsp_command(chip, rate>>8);
 154                 snd_sbdsp_command(chip, rate);
 155         }
 156 }
 157
 158 static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 159 {
 160         snd_als4000_gcr_write(chip, 0xa2, addr);
 161         snd_als4000_gcr_write(chip, 0xa3, (size-1));
 162 }
 163
 164 static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 165 {
 166         snd_als4000_gcr_write(chip, 0x91, addr);
 167         snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 168 }
 169
 170 #define ALS4000_FORMAT_SIGNED   (1<<0)
 171 #define ALS4000_FORMAT_16BIT    (1<<1)
 172 #define ALS4000_FORMAT_STEREO   (1<<2)
 173
 174 static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
 175 {
 176         int result;
 177
 178         result = 0;
 179         if (snd_pcm_format_signed(runtime->format))
 180                 result |= ALS4000_FORMAT_SIGNED;
 181         if (snd_pcm_format_physical_width(runtime->format) == 16)
 182                 result |= ALS4000_FORMAT_16BIT;
 183         if (runtime->channels > 1)
 184                 result |= ALS4000_FORMAT_STEREO;
 185         return result;
 186 }
 187
 188 /* structure for setting up playback */
 189 static struct {
 190         unsigned char dsp_cmd, dma_on, dma_off, format;
 191 } playback_cmd_vals[]={
 192 /* ALS4000_FORMAT_U8_MONO */
 193 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 194 /* ALS4000_FORMAT_S8_MONO */
 195 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 196 /* ALS4000_FORMAT_U16L_MONO */
 197 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 198 /* ALS4000_FORMAT_S16L_MONO */
 199 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 200 /* ALS4000_FORMAT_U8_STEREO */
 201 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 202 /* ALS4000_FORMAT_S8_STEREO */
 203 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 204 /* ALS4000_FORMAT_U16L_STEREO */
 205 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 206 /* ALS4000_FORMAT_S16L_STEREO */
 207 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 208 };
 209 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 210
 211 /* structure for setting up capture */
 212 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 213 static unsigned char capture_cmd_vals[]=
 214 {
 215 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 216 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 217 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 218 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 219 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 220 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 221 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 222 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 223 };
 224 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 225
 226 static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
 227                                  snd_pcm_hw_params_t * hw_params)
 228 {
 229         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 230 }
 231
 232 static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
 233 {
 234         snd_pcm_lib_free_pages(substream);
 235         return 0;
 236 }
 237
 238 static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
 239 {
 240         unsigned long flags;
 241         sb_t *chip = snd_pcm_substream_chip(substream);
 242         snd_pcm_runtime_t *runtime = substream->runtime;
 243         unsigned long size;
 244         unsigned count;
 245
 246         chip->capture_format = snd_als4000_get_format(runtime);
 247
 248         size = snd_pcm_lib_buffer_bytes(substream);
 249         count = snd_pcm_lib_period_bytes(substream);
 250
 251         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 252                 count >>=1;
 253         count--;
 254
 255         spin_lock_irqsave(&chip->reg_lock, flags);
 256         snd_als4000_set_rate(chip, runtime->rate);
 257         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 258         spin_unlock_irqrestore(&chip->reg_lock, flags);
 259         spin_lock_irqsave(&chip->mixer_lock, flags );
 260         snd_sbmixer_write(chip, 0xdc, count);
 261         snd_sbmixer_write(chip, 0xdd, count>>8);
 262         spin_unlock_irqrestore(&chip->mixer_lock, flags );
 263         return 0;
 264 }
 265
 266 static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
 267 {
 268         unsigned long flags;
 269         sb_t *chip = snd_pcm_substream_chip(substream);
 270         snd_pcm_runtime_t *runtime = substream->runtime;
 271         unsigned long size;
 272         unsigned count;
 273
 274         chip->playback_format = snd_als4000_get_format(runtime);
 275
 276         size = snd_pcm_lib_buffer_bytes(substream);
 277         count = snd_pcm_lib_period_bytes(substream);
 278
 279         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 280                 count >>=1;
 281         count--;
 282
 283         /* FIXME: from second playback on, there's a lot more clicks and pops
 284          * involved here than on first playback. Fiddling with
 285          * tons of different settings didn't help (DMA, speaker on/off,
 286          * reordering, ...). Something seems to get enabled on playback
 287          * that I haven't found out how to disable again, which then causes
 288          * the switching pops to reach the speakers the next time here. */
 289         spin_lock_irqsave(&chip->reg_lock, flags);
 290         snd_als4000_set_rate(chip, runtime->rate);
 291         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 292
 293         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 294         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 295         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 296         snd_sbdsp_command(chip, playback_cmd(chip).format);
 297         snd_sbdsp_command(chip, count);
 298         snd_sbdsp_command(chip, count>>8);
 299         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 300         spin_unlock_irqrestore(&chip->reg_lock, flags);
 301
 302         return 0;
 303 }
 304
 305 static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
 306 {
 307         unsigned long flags;
 308         sb_t *chip = snd_pcm_substream_chip(substream);
 309         int result = 0;
 310
 311         spin_lock_irqsave(&chip->mixer_lock, flags);
 312         if (cmd == SNDRV_PCM_TRIGGER_START) {
 313                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 314                 snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
 315         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 316                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 317                 snd_sbmixer_write(chip, 0xde, 0);
 318         } else {
 319                 result = -EINVAL;
 320         }
 321         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 322         return result;
 323 }
 324
 325 static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
 326 {
 327         unsigned long flags;
 328         sb_t *chip = snd_pcm_substream_chip(substream);
 329         int result = 0;
 330
 331         spin_lock_irqsave(&chip->reg_lock, flags);
 332         if (cmd == SNDRV_PCM_TRIGGER_START) {
 333                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 334                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 335         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 336                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 337                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 338         } else {
 339                 result = -EINVAL;
 340         }
 341         spin_unlock_irqrestore(&chip->reg_lock, flags);
 342         return result;
 343 }
 344
 345 static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
 346 {
 347         unsigned long flags;
 348         sb_t *chip = snd_pcm_substream_chip(substream);
 349         unsigned int result;
 350
 351         spin_lock_irqsave(&chip->reg_lock, flags);
 352         result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 353         spin_unlock_irqrestore(&chip->reg_lock, flags);
 354         return bytes_to_frames( substream->runtime, result );
 355 }
 356
 357 static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
 358 {
 359         unsigned long flags;
 360         sb_t *chip = snd_pcm_substream_chip(substream);
 361         unsigned result;
 362
 363         spin_lock_irqsave(&chip->reg_lock, flags);
 364         result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 365         spin_unlock_irqrestore(&chip->reg_lock, flags);
 366         return bytes_to_frames( substream->runtime, result );
 367 }
 368
 369 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 370 {
 371         sb_t *chip = snd_magic_cast(sb_t, dev_id, return IRQ_NONE);
 372         unsigned long flags;
 373         unsigned gcr_status;
 374         unsigned sb_status;
 375
 376         /* find out which bit of the ALS4000 produced the interrupt */
 377         gcr_status = inb(chip->alt_port + 0xe);
 378
 379         if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 380                 snd_pcm_period_elapsed(chip->playback_substream);
 381         if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 382                 snd_pcm_period_elapsed(chip->capture_substream);
 383         if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 384                 snd_mpu401_uart_interrupt(irq, chip->rmidi, regs);
 385         /* release the gcr */
 386         outb(gcr_status, chip->alt_port + 0xe);
 387
 388         spin_lock_irqsave(&chip->mixer_lock, flags);
 389         sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 390         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 391
 392         if (sb_status & SB_IRQTYPE_8BIT)
 393                 snd_sb_ack_8bit(chip);
 394         if (sb_status & SB_IRQTYPE_16BIT)
 395                 snd_sb_ack_16bit(chip);
 396         if (sb_status & SB_IRQTYPE_MPUIN)
 397                 inb(chip->mpu_port);
 398         if (sb_status & 0x20)
 399                 inb(SBP(chip, RESET));
 400         return IRQ_HANDLED;
 401 }
 402
 403 /*****************************************************************/
 404
 405 static snd_pcm_hardware_t snd_als4000_playback =
 406 {
 407         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 408                                  SNDRV_PCM_INFO_MMAP_VALID),
 409         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 410                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 411         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 412         .rate_min =             4000,
 413         .rate_max =             48000,
 414         .channels_min =         1,
 415         .channels_max =         2,
 416         .buffer_bytes_max =     65536,
 417         .period_bytes_min =     64,
 418         .period_bytes_max =     65536,
 419         .periods_min =          1,
 420         .periods_max =          1024,
 421         .fifo_size =            0
 422 };
 423
 424 static snd_pcm_hardware_t snd_als4000_capture =
 425 {
 426         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 427                                  SNDRV_PCM_INFO_MMAP_VALID),
 428         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 429                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 430         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 431         .rate_min =             4000,
 432         .rate_max =             48000,
 433         .channels_min =         1,
 434         .channels_max =         2,
 435         .buffer_bytes_max =     65536,
 436         .period_bytes_min =     64,
 437         .period_bytes_max =     65536,
 438         .periods_min =          1,
 439         .periods_max =          1024,
 440         .fifo_size =            0
 441 };
 442
 443 /*****************************************************************/
 444
 445 static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
 446 {
 447         sb_t *chip = snd_pcm_substream_chip(substream);
 448         snd_pcm_runtime_t *runtime = substream->runtime;
 449
 450         chip->playback_substream = substream;
 451         runtime->hw = snd_als4000_playback;
 452         return 0;
 453 }
 454
 455 static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
 456 {
 457         sb_t *chip = snd_pcm_substream_chip(substream);
 458
 459         chip->playback_substream = NULL;
 460         snd_pcm_lib_free_pages(substream);
 461         return 0;
 462 }
 463
 464 static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
 465 {
 466         sb_t *chip = snd_pcm_substream_chip(substream);
 467         snd_pcm_runtime_t *runtime = substream->runtime;
 468
 469         chip->capture_substream = substream;
 470         runtime->hw = snd_als4000_capture;
 471         return 0;
 472 }
 473
 474 static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
 475 {
 476         sb_t *chip = snd_pcm_substream_chip(substream);
 477
 478         chip->capture_substream = NULL;
 479         snd_pcm_lib_free_pages(substream);
 480         return 0;
 481 }
 482
 483 /******************************************************************/
 484
 485 static snd_pcm_ops_t snd_als4000_playback_ops = {
 486         .open =         snd_als4000_playback_open,
 487         .close =        snd_als4000_playback_close,
 488         .ioctl =        snd_pcm_lib_ioctl,
 489         .hw_params =    snd_als4000_hw_params,
 490         .hw_free =      snd_als4000_hw_free,
 491         .prepare =      snd_als4000_playback_prepare,
 492         .trigger =      snd_als4000_playback_trigger,
 493         .pointer =      snd_als4000_playback_pointer
 494 };
 495
 496 static snd_pcm_ops_t snd_als4000_capture_ops = {
 497         .open =         snd_als4000_capture_open,
 498         .close =        snd_als4000_capture_close,
 499         .ioctl =        snd_pcm_lib_ioctl,
 500         .hw_params =    snd_als4000_hw_params,
 501         .hw_free =      snd_als4000_hw_free,
 502         .prepare =      snd_als4000_capture_prepare,
 503         .trigger =      snd_als4000_capture_trigger,
 504         .pointer =      snd_als4000_capture_pointer
 505 };
 506
 507 static void snd_als4000_pcm_free(snd_pcm_t *pcm)
 508 {
 509         sb_t *chip = snd_magic_cast(sb_t, pcm->private_data, return);
 510         chip->pcm = NULL;
 511         snd_pcm_lib_preallocate_free_for_all(pcm);
 512 }
 513
 514 static int __devinit snd_als4000_pcm(sb_t *chip, int device)
 515 {
 516         snd_pcm_t *pcm;
 517         int err;
 518
 519         if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 520                 return err;
 521         pcm->private_free = snd_als4000_pcm_free;
 522         pcm->private_data = chip;
 523         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 524         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 525         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 526
 527         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 528                                               64*1024, 64*1024);
 529
 530         chip->pcm = pcm;
 531
 532         return 0;
 533 }
 534
 535 /******************************************************************/
 536
 537 static void snd_als4000_set_addr(unsigned long gcr,
 538                                         unsigned int sb,
 539                                         unsigned int mpu,
 540                                         unsigned int opl,
 541                                         unsigned int game)
 542 {
 543         u32 confA = 0;
 544         u32 confB = 0;
 545
 546         if (mpu > 0)
 547                 confB |= (mpu | 1) << 16;
 548         if (sb > 0)
 549                 confB |= (sb | 1);
 550         if (game > 0)
 551                 confA |= (game | 1) << 16;
 552         if (opl > 0)
 553                 confA |= (opl | 1);
 554         snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 555         snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 556 }
 557
 558 static void __devinit snd_als4000_configure(sb_t *chip)
 559 {
 560         unsigned long flags;
 561         unsigned tmp;
 562         int i;
 563
 564         /* do some more configuration */
 565         spin_lock_irqsave(&chip->mixer_lock, flags);
 566         tmp = snd_sbmixer_read(chip, 0xc0);
 567         snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 568         /* always select DMA channel 0, since we do not actually use DMA */
 569         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 570         snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 571         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 572
 573         spin_lock_irqsave(&chip->reg_lock,flags);
 574         /* magic number. Enables interrupts(?) */
 575         snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 576         for(i = 0x91; i <= 0x96; ++i)
 577                 snd_als4000_gcr_write(chip, i, 0);
 578
 579         snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 580         spin_unlock_irqrestore(&chip->reg_lock,flags);
 581 }
 582
 583 static void snd_card_als4000_free( snd_card_t *card )
 584 {
 585         snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
 586         /* make sure that interrupts are disabled */
 587         snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 588         /* free resources */
 589 #ifdef SUPPORT_JOYSTICK
 590         if (acard->res_joystick) {
 591                 if (acard->gameport.io)
 592                         gameport_unregister_port(&acard->gameport);
 593                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
 594                 release_resource(acard->res_joystick);
 595                 kfree_nocheck(acard->res_joystick);
 596         }
 597 #endif
 598         release_resource(acard->res_gcr);
 599         kfree_nocheck(acard->res_gcr);
 600 }
 601
 602 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 603                                           const struct pci_device_id *pci_id)
 604 {
 605         static int dev;
 606         snd_card_t *card;
 607         snd_card_als4000_t *acard;
 608         unsigned long gcr;
 609         struct resource *res_gcr_port;
 610         sb_t *chip;
 611         opl3_t *opl3;
 612         unsigned short word;
 613         int err;
 614         int joystick = 0;
 615
 616         if (dev >= SNDRV_CARDS)
 617                 return -ENODEV;
 618         if (!enable[dev]) {
 619                 dev++;
 620                 return -ENOENT;
 621         }
 622
 623         /* enable PCI device */
 624         if ((err = pci_enable_device(pci)) < 0) {
 625                 return err;
 626         }
 627         /* check, if we can restrict PCI DMA transfers to 24 bits */
 628         if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
 629             pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
 630                 snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
 631                 return -ENXIO;
 632         }
 633
 634         gcr = pci_resource_start(pci, 0);
 635         if ((res_gcr_port = request_region(gcr, 0x40, "ALS4000")) == NULL) {
 636                 snd_printk("unable to grab region 0x%lx-0x%lx\n", gcr, gcr + 0x40 - 1);
 637                 return -EBUSY;
 638         }
 639
 640         pci_read_config_word(pci, PCI_COMMAND, &word);
 641         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 642         pci_set_master(pci);
 643
 644         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 645                             sizeof( snd_card_als4000_t ) );
 646         if (card == NULL) {
 647                 release_resource(res_gcr_port);
 648                 kfree_nocheck(res_gcr_port);
 649                 return -ENOMEM;
 650         }
 651
 652         acard = (snd_card_als4000_t *)card->private_data;
 653         acard->gcr = gcr;
 654         acard->res_gcr = res_gcr_port;
 655         card->private_free = snd_card_als4000_free;
 656
 657         /* disable all legacy ISA stuff except for joystick */
 658 #ifdef SUPPORT_JOYSTICK
 659         if (joystick_port[dev] == 1) {
 660                 /* auto-detect */
 661                 long p;
 662                 for (p = 0x200; p <= 0x218; p += 8) {
 663                         if ((acard->res_joystick = request_region(p, 8, "ALS4000 gameport")) != NULL) {
 664                                 joystick_port[dev] = p;
 665                                 break;
 666                         }
 667                 }
 668         } else if (joystick_port[dev] > 0)
 669                 acard->res_joystick = request_region(joystick_port[dev], 8, "ALS4000 gameport");
 670         if (acard->res_joystick)
 671                 joystick = joystick_port[dev];
 672         else
 673                 joystick = 0;
 674 #endif
 675         snd_als4000_set_addr(gcr, 0, 0, 0, joystick);
 676
 677         if ((err = snd_sbdsp_create(card,
 678                                     gcr + 0x10,
 679                                     pci->irq,
 680                                     snd_als4000_interrupt,
 681                                     -1,
 682                                     -1,
 683                                     SB_HW_ALS4000,
 684                                     &chip)) < 0) {
 685                 snd_card_free(card);
 686                 return err;
 687         }
 688
 689         chip->pci = pci;
 690         chip->alt_port = gcr;
 691         snd_card_set_dev(card, &pci->dev);
 692
 693         snd_als4000_configure(chip);
 694
 695         strcpy(card->driver, "ALS4000");
 696         strcpy(card->shortname, "Avance Logic ALS4000");
 697         sprintf(card->longname, "%s at 0x%lx, irq %i",
 698                 card->shortname, chip->alt_port, chip->irq);
 699
 700         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 701                                         gcr+0x30, 1, pci->irq, 0,
 702                                         &chip->rmidi)) < 0) {
 703                 snd_card_free(card);
 704                 printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
 705                 return err;
 706         }
 707
 708         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 709                 snd_card_free(card);
 710                 return err;
 711         }
 712         if ((err = snd_sbmixer_new(chip)) < 0) {
 713                 snd_card_free(card);
 714                 return err;
 715         }
 716
 717         if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 718                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 719                 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
 720                            gcr+0x10, gcr+0x12 );
 721         } else {
 722                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 723                         snd_card_free(card);
 724                         return err;
 725                 }
 726         }
 727
 728 #ifdef SUPPORT_JOYSTICK
 729         if (acard->res_joystick) {
 730                 acard->gameport.io = joystick;
 731                 gameport_register_port(&acard->gameport);
 732         }
 733 #endif
 734
 735         if ((err = snd_card_register(card)) < 0) {
 736                 snd_card_free(card);
 737                 return err;
 738         }
 739         pci_set_drvdata(pci, card);
 740         dev++;
 741         return 0;
 742 }
 743
 744 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 745 {
 746         snd_card_free(pci_get_drvdata(pci));
 747         pci_set_drvdata(pci, NULL);
 748 }
 749
 750 static struct pci_driver driver = {
 751         .name = "ALS4000",
 752         .id_table = snd_als4000_ids,
 753         .probe = snd_card_als4000_probe,
 754         .remove = __devexit_p(snd_card_als4000_remove),
 755 };
 756
 757 static int __init alsa_card_als4000_init(void)
 758 {
 759         return pci_module_init(&driver);
 760 }
 761
 762 static void __exit alsa_card_als4000_exit(void)
 763 {
 764         pci_unregister_driver(&driver);
 765 }
 766
 767 module_init(alsa_card_als4000_init)
 768 module_exit(alsa_card_als4000_exit)