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 <sound/core.h>
  68 #include <sound/pcm.h>
  69 #include <sound/rawmidi.h>
  70 #include <sound/mpu401.h>
  71 #include <sound/opl3.h>
  72 #include <sound/sb.h>
  73 #define SNDRV_GET_ID
  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
  93 MODULE_PARM(index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
  94 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
  95 MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
  96 MODULE_PARM(id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
  97 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
  98 MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
  99 MODULE_PARM(enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
 100 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
 101 MODULE_PARM_SYNTAX(enable, SNDRV_INDEX_DESC);
 102 #ifdef SUPPORT_JOYSTICK
 103 MODULE_PARM(joystick_port, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
 104 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 105 MODULE_PARM_SYNTAX(joystick_port, SNDRV_ENABLED);
 106 #endif
 107
 108 #define chip_t sb_t
 109
 110 typedef struct {
 111         unsigned long gcr;
 112         struct resource *res_gcr;
 113 #ifdef SUPPORT_JOYSTICK
 114         struct gameport gameport;
 115         struct resource *res_joystick;
 116 #endif
 117 } snd_card_als4000_t;
 118
 119 static struct pci_device_id snd_als4000_ids[] = {
 120         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 121         { 0, }
 122 };
 123
 124 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 125
 126 static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
 127 {
 128         outb(reg, port+0x0c);
 129         outl(val, port+0x08);
 130 }
 131
 132 static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
 133 {
 134         snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
 135 }
 136
 137 static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
 138 {
 139         outb(reg, port+0x0c);
 140         return inl(port+0x08);
 141 }
 142
 143 static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
 144 {
 145         return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 146 }
 147
 148 static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
 149 {
 150         if (!(chip->mode & SB_RATE_LOCK)) {
 151                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 152                 snd_sbdsp_command(chip, rate>>8);
 153                 snd_sbdsp_command(chip, rate);
 154         }
 155 }
 156
 157 static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 158 {
 159         snd_als4000_gcr_write(chip, 0xa2, addr);
 160         snd_als4000_gcr_write(chip, 0xa3, (size-1));
 161 }
 162
 163 static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 164 {
 165         snd_als4000_gcr_write(chip, 0x91, addr);
 166         snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 167 }
 168
 169 #define ALS4000_FORMAT_SIGNED   (1<<0)
 170 #define ALS4000_FORMAT_16BIT    (1<<1)
 171 #define ALS4000_FORMAT_STEREO   (1<<2)
 172
 173 static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
 174 {
 175         int result;
 176
 177         result = 0;
 178         if (snd_pcm_format_signed(runtime->format))
 179                 result |= ALS4000_FORMAT_SIGNED;
 180         if (snd_pcm_format_physical_width(runtime->format) == 16)
 181                 result |= ALS4000_FORMAT_16BIT;
 182         if (runtime->channels > 1)
 183                 result |= ALS4000_FORMAT_STEREO;
 184         return result;
 185 }
 186
 187 /* structure for setting up playback */
 188 static struct {
 189         unsigned char dsp_cmd, dma_on, dma_off, format;
 190 } playback_cmd_vals[]={
 191 /* ALS4000_FORMAT_U8_MONO */
 192 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 193 /* ALS4000_FORMAT_S8_MONO */
 194 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 195 /* ALS4000_FORMAT_U16L_MONO */
 196 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 197 /* ALS4000_FORMAT_S16L_MONO */
 198 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 199 /* ALS4000_FORMAT_U8_STEREO */
 200 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 201 /* ALS4000_FORMAT_S8_STEREO */
 202 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 203 /* ALS4000_FORMAT_U16L_STEREO */
 204 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 205 /* ALS4000_FORMAT_S16L_STEREO */
 206 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 207 };
 208 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 209
 210 /* structure for setting up capture */
 211 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 212 static unsigned char capture_cmd_vals[]=
 213 {
 214 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 215 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 216 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 217 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 218 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 219 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 220 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 221 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 222 };
 223 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 224
 225 static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
 226                                  snd_pcm_hw_params_t * hw_params)
 227 {
 228         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 229 }
 230
 231 static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
 232 {
 233         snd_pcm_lib_free_pages(substream);
 234         return 0;
 235 }
 236
 237 static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
 238 {
 239         unsigned long flags;
 240         sb_t *chip = snd_pcm_substream_chip(substream);
 241         snd_pcm_runtime_t *runtime = substream->runtime;
 242         unsigned long size;
 243         unsigned count;
 244
 245         chip->capture_format = snd_als4000_get_format(runtime);
 246
 247         size = snd_pcm_lib_buffer_bytes(substream);
 248         count = snd_pcm_lib_period_bytes(substream);
 249
 250         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 251                 count >>=1;
 252         count--;
 253
 254         spin_lock_irqsave(&chip->reg_lock, flags);
 255         snd_als4000_set_rate(chip, runtime->rate);
 256         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 257         spin_unlock_irqrestore(&chip->reg_lock, flags);
 258         spin_lock_irqsave(&chip->mixer_lock, flags );
 259         snd_sbmixer_write(chip, 0xdc, count);
 260         snd_sbmixer_write(chip, 0xdd, count>>8);
 261         spin_unlock_irqrestore(&chip->mixer_lock, flags );
 262         return 0;
 263 }
 264
 265 static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
 266 {
 267         unsigned long flags;
 268         sb_t *chip = snd_pcm_substream_chip(substream);
 269         snd_pcm_runtime_t *runtime = substream->runtime;
 270         unsigned long size;
 271         unsigned count;
 272
 273         chip->playback_format = snd_als4000_get_format(runtime);
 274
 275         size = snd_pcm_lib_buffer_bytes(substream);
 276         count = snd_pcm_lib_period_bytes(substream);
 277
 278         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 279                 count >>=1;
 280         count--;
 281
 282         /* FIXME: from second playback on, there's a lot more clicks and pops
 283          * involved here than on first playback. Fiddling with
 284          * tons of different settings didn't help (DMA, speaker on/off,
 285          * reordering, ...). Something seems to get enabled on playback
 286          * that I haven't found out how to disable again, which then causes
 287          * the switching pops to reach the speakers the next time here. */
 288         spin_lock_irqsave(&chip->reg_lock, flags);
 289         snd_als4000_set_rate(chip, runtime->rate);
 290         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 291
 292         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 293         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 294         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 295         snd_sbdsp_command(chip, playback_cmd(chip).format);
 296         snd_sbdsp_command(chip, count);
 297         snd_sbdsp_command(chip, count>>8);
 298         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 299         spin_unlock_irqrestore(&chip->reg_lock, flags);
 300
 301         return 0;
 302 }
 303
 304 static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
 305 {
 306         unsigned long flags;
 307         sb_t *chip = snd_pcm_substream_chip(substream);
 308         int result = 0;
 309
 310         spin_lock_irqsave(&chip->mixer_lock, flags);
 311         if (cmd == SNDRV_PCM_TRIGGER_START) {
 312                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 313                 snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
 314         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 315                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 316                 snd_sbmixer_write(chip, 0xde, 0);
 317         } else {
 318                 result = -EINVAL;
 319         }
 320         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 321         return result;
 322 }
 323
 324 static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
 325 {
 326         unsigned long flags;
 327         sb_t *chip = snd_pcm_substream_chip(substream);
 328         int result = 0;
 329
 330         spin_lock_irqsave(&chip->reg_lock, flags);
 331         if (cmd == SNDRV_PCM_TRIGGER_START) {
 332                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 333                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 334         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 335                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 336                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 337         } else {
 338                 result = -EINVAL;
 339         }
 340         spin_unlock_irqrestore(&chip->reg_lock, flags);
 341         return result;
 342 }
 343
 344 static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
 345 {
 346         unsigned long flags;
 347         sb_t *chip = snd_pcm_substream_chip(substream);
 348         unsigned int result;
 349
 350         spin_lock_irqsave(&chip->reg_lock, flags);
 351         result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 352         spin_unlock_irqrestore(&chip->reg_lock, flags);
 353         return bytes_to_frames( substream->runtime, result );
 354 }
 355
 356 static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
 357 {
 358         unsigned long flags;
 359         sb_t *chip = snd_pcm_substream_chip(substream);
 360         unsigned result;
 361
 362         spin_lock_irqsave(&chip->reg_lock, flags);
 363         result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 364         spin_unlock_irqrestore(&chip->reg_lock, flags);
 365         return bytes_to_frames( substream->runtime, result );
 366 }
 367
 368 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 369 {
 370         sb_t *chip = snd_magic_cast(sb_t, dev_id, return IRQ_NONE);
 371         unsigned long flags;
 372         unsigned gcr_status;
 373         unsigned sb_status;
 374
 375         /* find out which bit of the ALS4000 produced the interrupt */
 376         gcr_status = inb(chip->alt_port + 0xe);
 377
 378         if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 379                 snd_pcm_period_elapsed(chip->playback_substream);
 380         if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 381                 snd_pcm_period_elapsed(chip->capture_substream);
 382         if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 383                 snd_mpu401_uart_interrupt(irq, chip->rmidi, regs);
 384         /* release the gcr */
 385         outb(gcr_status, chip->alt_port + 0xe);
 386
 387         spin_lock_irqsave(&chip->mixer_lock, flags);
 388         sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 389         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 390
 391         if (sb_status & SB_IRQTYPE_8BIT)
 392                 snd_sb_ack_8bit(chip);
 393         if (sb_status & SB_IRQTYPE_16BIT)
 394                 snd_sb_ack_16bit(chip);
 395         if (sb_status & SB_IRQTYPE_MPUIN)
 396                 inb(chip->mpu_port);
 397         if (sb_status & 0x20)
 398                 inb(SBP(chip, RESET));
 399         return IRQ_HANDLED;
 400 }
 401
 402 /*****************************************************************/
 403
 404 static snd_pcm_hardware_t snd_als4000_playback =
 405 {
 406         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 407                                  SNDRV_PCM_INFO_MMAP_VALID),
 408         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 409                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 410         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 411         .rate_min =             4000,
 412         .rate_max =             48000,
 413         .channels_min =         1,
 414         .channels_max =         2,
 415         .buffer_bytes_max =     65536,
 416         .period_bytes_min =     64,
 417         .period_bytes_max =     65536,
 418         .periods_min =          1,
 419         .periods_max =          1024,
 420         .fifo_size =            0
 421 };
 422
 423 static snd_pcm_hardware_t snd_als4000_capture =
 424 {
 425         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 426                                  SNDRV_PCM_INFO_MMAP_VALID),
 427         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 428                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 429         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 430         .rate_min =             4000,
 431         .rate_max =             48000,
 432         .channels_min =         1,
 433         .channels_max =         2,
 434         .buffer_bytes_max =     65536,
 435         .period_bytes_min =     64,
 436         .period_bytes_max =     65536,
 437         .periods_min =          1,
 438         .periods_max =          1024,
 439         .fifo_size =            0
 440 };
 441
 442 /*****************************************************************/
 443
 444 static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
 445 {
 446         sb_t *chip = snd_pcm_substream_chip(substream);
 447         snd_pcm_runtime_t *runtime = substream->runtime;
 448
 449         chip->playback_substream = substream;
 450         runtime->hw = snd_als4000_playback;
 451         return 0;
 452 }
 453
 454 static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
 455 {
 456         sb_t *chip = snd_pcm_substream_chip(substream);
 457
 458         chip->playback_substream = NULL;
 459         snd_pcm_lib_free_pages(substream);
 460         return 0;
 461 }
 462
 463 static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
 464 {
 465         sb_t *chip = snd_pcm_substream_chip(substream);
 466         snd_pcm_runtime_t *runtime = substream->runtime;
 467
 468         chip->capture_substream = substream;
 469         runtime->hw = snd_als4000_capture;
 470         return 0;
 471 }
 472
 473 static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
 474 {
 475         sb_t *chip = snd_pcm_substream_chip(substream);
 476
 477         chip->capture_substream = NULL;
 478         snd_pcm_lib_free_pages(substream);
 479         return 0;
 480 }
 481
 482 /******************************************************************/
 483
 484 static snd_pcm_ops_t snd_als4000_playback_ops = {
 485         .open =         snd_als4000_playback_open,
 486         .close =        snd_als4000_playback_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_playback_prepare,
 491         .trigger =      snd_als4000_playback_trigger,
 492         .pointer =      snd_als4000_playback_pointer
 493 };
 494
 495 static snd_pcm_ops_t snd_als4000_capture_ops = {
 496         .open =         snd_als4000_capture_open,
 497         .close =        snd_als4000_capture_close,
 498         .ioctl =        snd_pcm_lib_ioctl,
 499         .hw_params =    snd_als4000_hw_params,
 500         .hw_free =      snd_als4000_hw_free,
 501         .prepare =      snd_als4000_capture_prepare,
 502         .trigger =      snd_als4000_capture_trigger,
 503         .pointer =      snd_als4000_capture_pointer
 504 };
 505
 506 static void snd_als4000_pcm_free(snd_pcm_t *pcm)
 507 {
 508         sb_t *chip = snd_magic_cast(sb_t, pcm->private_data, return);
 509         chip->pcm = NULL;
 510         snd_pcm_lib_preallocate_free_for_all(pcm);
 511 }
 512
 513 static int __devinit snd_als4000_pcm(sb_t *chip, int device)
 514 {
 515         snd_pcm_t *pcm;
 516         int err;
 517
 518         if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 519                 return err;
 520         pcm->private_free = snd_als4000_pcm_free;
 521         pcm->private_data = chip;
 522         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 523         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 524         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 525
 526         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 527                                               64*1024, 64*1024);
 528
 529         chip->pcm = pcm;
 530
 531         return 0;
 532 }
 533
 534 /******************************************************************/
 535
 536 static void snd_als4000_set_addr(unsigned long gcr,
 537                                         unsigned int sb,
 538                                         unsigned int mpu,
 539                                         unsigned int opl,
 540                                         unsigned int game)
 541 {
 542         u32 confA = 0;
 543         u32 confB = 0;
 544
 545         if (mpu > 0)
 546                 confB |= (mpu | 1) << 16;
 547         if (sb > 0)
 548                 confB |= (sb | 1);
 549         if (game > 0)
 550                 confA |= (game | 1) << 16;
 551         if (opl > 0)
 552                 confA |= (opl | 1);
 553         snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 554         snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 555 }
 556
 557 static void __devinit snd_als4000_configure(sb_t *chip)
 558 {
 559         unsigned long flags;
 560         unsigned tmp;
 561         int i;
 562
 563         /* do some more configuration */
 564         spin_lock_irqsave(&chip->mixer_lock, flags);
 565         tmp = snd_sbmixer_read(chip, 0xc0);
 566         snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 567         /* always select DMA channel 0, since we do not actually use DMA */
 568         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 569         snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 570         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 571
 572         spin_lock_irqsave(&chip->reg_lock,flags);
 573         /* magic number. Enables interrupts(?) */
 574         snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 575         for(i = 0x91; i <= 0x96; ++i)
 576                 snd_als4000_gcr_write(chip, i, 0);
 577
 578         snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 579         spin_unlock_irqrestore(&chip->reg_lock,flags);
 580 }
 581
 582 static void snd_card_als4000_free( snd_card_t *card )
 583 {
 584         snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
 585         /* make sure that interrupts are disabled */
 586         snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 587         /* free resources */
 588 #ifdef SUPPORT_JOYSTICK
 589         if (acard->res_joystick) {
 590                 if (acard->gameport.io)
 591                         gameport_unregister_port(&acard->gameport);
 592                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
 593                 release_resource(acard->res_joystick);
 594                 kfree_nocheck(acard->res_joystick);
 595         }
 596 #endif
 597         release_resource(acard->res_gcr);
 598         kfree_nocheck(acard->res_gcr);
 599 }
 600
 601 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 602                                           const struct pci_device_id *pci_id)
 603 {
 604         static int dev;
 605         snd_card_t *card;
 606         snd_card_als4000_t *acard;
 607         unsigned long gcr;
 608         struct resource *res_gcr_port;
 609         sb_t *chip;
 610         opl3_t *opl3;
 611         unsigned short word;
 612         int err;
 613         int joystick = 0;
 614
 615         if (dev >= SNDRV_CARDS)
 616                 return -ENODEV;
 617         if (!enable[dev]) {
 618                 dev++;
 619                 return -ENOENT;
 620         }
 621
 622         /* enable PCI device */
 623         if ((err = pci_enable_device(pci)) < 0) {
 624                 return err;
 625         }
 626         /* check, if we can restrict PCI DMA transfers to 24 bits */
 627         if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
 628             pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
 629                 snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
 630                 return -ENXIO;
 631         }
 632
 633         gcr = pci_resource_start(pci, 0);
 634         if ((res_gcr_port = request_region(gcr, 0x40, "ALS4000")) == NULL) {
 635                 snd_printk("unable to grab region 0x%lx-0x%lx\n", gcr, gcr + 0x40 - 1);
 636                 return -EBUSY;
 637         }
 638
 639         pci_read_config_word(pci, PCI_COMMAND, &word);
 640         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 641         pci_set_master(pci);
 642
 643         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 644                             sizeof( snd_card_als4000_t ) );
 645         if (card == NULL) {
 646                 release_resource(res_gcr_port);
 647                 kfree_nocheck(res_gcr_port);
 648                 return -ENOMEM;
 649         }
 650
 651         acard = (snd_card_als4000_t *)card->private_data;
 652         acard->gcr = gcr;
 653         acard->res_gcr = res_gcr_port;
 654         card->private_free = snd_card_als4000_free;
 655
 656         /* disable all legacy ISA stuff except for joystick */
 657 #ifdef SUPPORT_JOYSTICK
 658         if (joystick_port[dev] == 1) {
 659                 /* auto-detect */
 660                 long p;
 661                 for (p = 0x200; p <= 0x218; p += 8) {
 662                         if ((acard->res_joystick = request_region(p, 8, "ALS4000 gameport")) != NULL) {
 663                                 joystick_port[dev] = p;
 664                                 break;
 665                         }
 666                 }
 667         } else if (joystick_port[dev] > 0)
 668                 acard->res_joystick = request_region(joystick_port[dev], 8, "ALS4000 gameport");
 669         if (acard->res_joystick)
 670                 joystick = joystick_port[dev];
 671         else
 672                 joystick = 0;
 673 #endif
 674         snd_als4000_set_addr(gcr, 0, 0, 0, joystick);
 675
 676         if ((err = snd_sbdsp_create(card,
 677                                     gcr + 0x10,
 678                                     pci->irq,
 679                                     snd_als4000_interrupt,
 680                                     -1,
 681                                     -1,
 682                                     SB_HW_ALS4000,
 683                                     &chip)) < 0) {
 684                 snd_card_free(card);
 685                 return err;
 686         }
 687
 688         chip->pci = pci;
 689         chip->alt_port = gcr;
 690         snd_card_set_dev(card, &pci->dev);
 691
 692         snd_als4000_configure(chip);
 693
 694         strcpy(card->driver, "ALS4000");
 695         strcpy(card->shortname, "Avance Logic ALS4000");
 696         sprintf(card->longname, "%s at 0x%lx, irq %i",
 697                 card->shortname, chip->alt_port, chip->irq);
 698
 699         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 700                                         gcr+0x30, 1, pci->irq, 0,
 701                                         &chip->rmidi)) < 0) {
 702                 snd_card_free(card);
 703                 printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
 704                 return err;
 705         }
 706
 707         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 708                 snd_card_free(card);
 709                 return err;
 710         }
 711         if ((err = snd_sbmixer_new(chip)) < 0) {
 712                 snd_card_free(card);
 713                 return err;
 714         }
 715
 716         if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 717                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 718                 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
 719                            gcr+0x10, gcr+0x12 );
 720         } else {
 721                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 722                         snd_card_free(card);
 723                         return err;
 724                 }
 725         }
 726
 727 #ifdef SUPPORT_JOYSTICK
 728         if (acard->res_joystick) {
 729                 acard->gameport.io = joystick;
 730                 gameport_register_port(&acard->gameport);
 731         }
 732 #endif
 733
 734         if ((err = snd_card_register(card)) < 0) {
 735                 snd_card_free(card);
 736                 return err;
 737         }
 738         pci_set_drvdata(pci, card);
 739         dev++;
 740         return 0;
 741 }
 742
 743 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 744 {
 745         snd_card_free(pci_get_drvdata(pci));
 746         pci_set_drvdata(pci, NULL);
 747 }
 748
 749 static struct pci_driver driver = {
 750         .name = "ALS4000",
 751         .id_table = snd_als4000_ids,
 752         .probe = snd_card_als4000_probe,
 753         .remove = __devexit_p(snd_card_als4000_remove),
 754 };
 755
 756 static int __init alsa_card_als4000_init(void)
 757 {
 758         int err;
 759
 760         if ((err = pci_module_init(&driver)) < 0) {
 761 #ifdef MODULE
 762                 printk(KERN_ERR "no ALS4000 based soundcards found or device busy\n");
 763 #endif
 764                 return err;
 765         }
 766         return 0;
 767 }
 768
 769 static void __exit alsa_card_als4000_exit(void)
 770 {
 771         pci_unregister_driver(&driver);
 772 }
 773
 774 module_init(alsa_card_als4000_init)
 775 module_exit(alsa_card_als4000_exit)
 776
 777 #ifndef MODULE
 778
 779 /* format is: snd-als4000=enable,index,id,joystick_port */
 780
 781 static int __init alsa_card_als4000_setup(char *str)
 782 {
 783         static unsigned __initdata nr_dev = 0;
 784
 785         if (nr_dev >= SNDRV_CARDS)
 786                 return 0;
 787         (void)(get_option(&str,&enable[nr_dev]) == 2 &&
 788                get_option(&str,&index[nr_dev]) == 2 &&
 789                get_id(&str,&id[nr_dev]) == 2
 790 #ifdef SUPPORT_JOYSTICK
 791                && get_option(&str,&joystick_port[nr_dev]) == 2
 792 #endif
 793                );
 794         nr_dev++;
 795         return 1;
 796 }
 797
 798 __setup("snd-als4000=", alsa_card_als4000_setup);
 799
 800 #endif /* ifndef MODULE */