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 <sound/core.h>
  67 #include <sound/pcm.h>
  68 #include <sound/rawmidi.h>
  69 #include <sound/mpu401.h>
  70 #include <sound/opl3.h>
  71 #include <sound/sb.h>
  72 #define SNDRV_GET_ID
  73 #include <sound/initval.h>
  74
  75 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
  76 MODULE_DESCRIPTION("Avance Logic ALS4000");
  77 MODULE_LICENSE("GPL");
  78 MODULE_CLASSES("{sound}");
  79 MODULE_DEVICES("{{Avance Logic,ALS4000}}");
  80
  81 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  82 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  83 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  84 static int joystick_port[SNDRV_CARDS] =
  85 #ifdef CONFIG_ISA
  86         {0x200};        /* enable as default */
  87 #else
  88         {0};    /* disabled */
  89 #endif
  90
  91 MODULE_PARM(index, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
  92 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
  93 MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
  94 MODULE_PARM(id, "1-" __MODULE_STRING(SNDRV_CARDS) "s");
  95 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
  96 MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
  97 MODULE_PARM(enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
  98 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
  99 MODULE_PARM_SYNTAX(enable, SNDRV_INDEX_DESC);
 100 MODULE_PARM(joystick_port, "1-" __MODULE_STRING(SNDRV_CARDS) "i");
 101 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 102 MODULE_PARM_SYNTAX(joystick_port, SNDRV_ENABLED);
 103
 104 #define chip_t sb_t
 105
 106 typedef struct {
 107         unsigned long gcr;
 108 } snd_card_als4000_t;
 109
 110 static struct pci_device_id snd_als4000_ids[] __devinitdata = {
 111         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 112         { 0, }
 113 };
 114
 115 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 116
 117 static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
 118 {
 119         outb(reg, port+0x0c);
 120         outl(val, port+0x08);
 121 }
 122
 123 static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
 124 {
 125         snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
 126 }
 127
 128 static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
 129 {
 130         outb(reg, port+0x0c);
 131         return inl(port+0x08);
 132 }
 133
 134 static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
 135 {
 136         return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 137 }
 138
 139 static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
 140 {
 141         if (!(chip->mode & SB_RATE_LOCK)) {
 142                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 143                 snd_sbdsp_command(chip, rate>>8);
 144                 snd_sbdsp_command(chip, rate);
 145         }
 146 }
 147
 148 static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 149 {
 150         snd_als4000_gcr_write(chip, 0xa2, addr);
 151         snd_als4000_gcr_write(chip, 0xa3, (size-1));
 152 }
 153
 154 static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 155 {
 156         snd_als4000_gcr_write(chip, 0x91, addr);
 157         snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 158 }
 159
 160 #define ALS4000_FORMAT_SIGNED   (1<<0)
 161 #define ALS4000_FORMAT_16BIT    (1<<1)
 162 #define ALS4000_FORMAT_STEREO   (1<<2)
 163
 164 static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
 165 {
 166         int result;
 167
 168         result = 0;
 169         if (snd_pcm_format_signed(runtime->format))
 170                 result |= ALS4000_FORMAT_SIGNED;
 171         if (snd_pcm_format_physical_width(runtime->format) == 16)
 172                 result |= ALS4000_FORMAT_16BIT;
 173         if (runtime->channels > 1)
 174                 result |= ALS4000_FORMAT_STEREO;
 175         return result;
 176 }
 177
 178 /* structure for setting up playback */
 179 static struct {
 180         unsigned char dsp_cmd, dma_on, dma_off, format;
 181 } playback_cmd_vals[]={
 182 /* ALS4000_FORMAT_U8_MONO */
 183 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 184 /* ALS4000_FORMAT_S8_MONO */
 185 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 186 /* ALS4000_FORMAT_U16L_MONO */
 187 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 188 /* ALS4000_FORMAT_S16L_MONO */
 189 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 190 /* ALS4000_FORMAT_U8_STEREO */
 191 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 192 /* ALS4000_FORMAT_S8_STEREO */
 193 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 194 /* ALS4000_FORMAT_U16L_STEREO */
 195 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 196 /* ALS4000_FORMAT_S16L_STEREO */
 197 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 198 };
 199 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 200
 201 /* structure for setting up capture */
 202 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 203 static unsigned char capture_cmd_vals[]=
 204 {
 205 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 206 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 207 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 208 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 209 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 210 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 211 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 212 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 213 };
 214 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 215
 216 static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
 217                                  snd_pcm_hw_params_t * hw_params)
 218 {
 219         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 220 }
 221
 222 static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
 223 {
 224         snd_pcm_lib_free_pages(substream);
 225         return 0;
 226 }
 227
 228 static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
 229 {
 230         unsigned long flags;
 231         sb_t *chip = snd_pcm_substream_chip(substream);
 232         snd_pcm_runtime_t *runtime = substream->runtime;
 233         unsigned long size;
 234         unsigned count;
 235
 236         chip->capture_format = snd_als4000_get_format(runtime);
 237
 238         size = snd_pcm_lib_buffer_bytes(substream);
 239         count = snd_pcm_lib_period_bytes(substream);
 240
 241         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 242                 count >>=1;
 243         count--;
 244
 245         spin_lock_irqsave(&chip->reg_lock, flags);
 246         snd_als4000_set_rate(chip, runtime->rate);
 247         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 248         spin_unlock_irqrestore(&chip->reg_lock, flags);
 249         spin_lock_irqsave(&chip->mixer_lock, flags );
 250         snd_sbmixer_write(chip, 0xdc, count);
 251         snd_sbmixer_write(chip, 0xdd, count>>8);
 252         spin_unlock_irqrestore(&chip->mixer_lock, flags );
 253         return 0;
 254 }
 255
 256 static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
 257 {
 258         unsigned long flags;
 259         sb_t *chip = snd_pcm_substream_chip(substream);
 260         snd_pcm_runtime_t *runtime = substream->runtime;
 261         unsigned long size;
 262         unsigned count;
 263
 264         chip->playback_format = snd_als4000_get_format(runtime);
 265
 266         size = snd_pcm_lib_buffer_bytes(substream);
 267         count = snd_pcm_lib_period_bytes(substream);
 268
 269         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 270                 count >>=1;
 271         count--;
 272
 273         /* FIXME: from second playback on, there's a lot more clicks and pops
 274          * involved here than on first playback. Fiddling with
 275          * tons of different settings didn't help (DMA, speaker on/off,
 276          * reordering, ...). Something seems to get enabled on playback
 277          * that I haven't found out how to disable again, which then causes
 278          * the switching pops to reach the speakers the next time here. */
 279         spin_lock_irqsave(&chip->reg_lock, flags);
 280         snd_als4000_set_rate(chip, runtime->rate);
 281         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 282
 283         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 284         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 285         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 286         snd_sbdsp_command(chip, playback_cmd(chip).format);
 287         snd_sbdsp_command(chip, count);
 288         snd_sbdsp_command(chip, count>>8);
 289         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 290         spin_unlock_irqrestore(&chip->reg_lock, flags);
 291
 292         return 0;
 293 }
 294
 295 static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
 296 {
 297         unsigned long flags;
 298         sb_t *chip = snd_pcm_substream_chip(substream);
 299         int result = 0;
 300
 301         spin_lock_irqsave(&chip->mixer_lock, flags);
 302         if (cmd == SNDRV_PCM_TRIGGER_START) {
 303                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 304                 snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
 305         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 306                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 307                 snd_sbmixer_write(chip, 0xde, 0);
 308         } else {
 309                 result = -EINVAL;
 310         }
 311         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 312         return result;
 313 }
 314
 315 static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
 316 {
 317         unsigned long flags;
 318         sb_t *chip = snd_pcm_substream_chip(substream);
 319         int result = 0;
 320
 321         spin_lock_irqsave(&chip->reg_lock, flags);
 322         if (cmd == SNDRV_PCM_TRIGGER_START) {
 323                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 324                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 325         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 326                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 327                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 328         } else {
 329                 result = -EINVAL;
 330         }
 331         spin_unlock_irqrestore(&chip->reg_lock, flags);
 332         return result;
 333 }
 334
 335 static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
 336 {
 337         unsigned long flags;
 338         sb_t *chip = snd_pcm_substream_chip(substream);
 339         unsigned int result;
 340
 341         spin_lock_irqsave(&chip->reg_lock, flags);
 342         result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 343         spin_unlock_irqrestore(&chip->reg_lock, flags);
 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         unsigned long flags;
 350         sb_t *chip = snd_pcm_substream_chip(substream);
 351         unsigned result;
 352
 353         spin_lock_irqsave(&chip->reg_lock, flags);
 354         result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 355         spin_unlock_irqrestore(&chip->reg_lock, flags);
 356         return bytes_to_frames( substream->runtime, result );
 357 }
 358
 359 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 360 {
 361         sb_t *chip = snd_magic_cast(sb_t, dev_id, return IRQ_NONE);
 362         unsigned long flags;
 363         unsigned gcr_status;
 364         unsigned sb_status;
 365
 366         /* find out which bit of the ALS4000 produced the interrupt */
 367         gcr_status = inb(chip->alt_port + 0xe);
 368
 369         if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 370                 snd_pcm_period_elapsed(chip->playback_substream);
 371         if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 372                 snd_pcm_period_elapsed(chip->capture_substream);
 373         if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 374                 snd_mpu401_uart_interrupt(irq, chip->rmidi, regs);
 375         /* release the gcr */
 376         outb(gcr_status, chip->alt_port + 0xe);
 377
 378         spin_lock_irqsave(&chip->mixer_lock, flags);
 379         sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 380         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 381
 382         if (sb_status & SB_IRQTYPE_8BIT)
 383                 snd_sb_ack_8bit(chip);
 384         if (sb_status & SB_IRQTYPE_16BIT)
 385                 snd_sb_ack_16bit(chip);
 386         if (sb_status & SB_IRQTYPE_MPUIN)
 387                 inb(chip->mpu_port);
 388         if (sb_status & 0x20)
 389                 inb(SBP(chip, RESET));
 390         return IRQ_HANDLED;
 391 }
 392
 393 /*****************************************************************/
 394
 395 static snd_pcm_hardware_t snd_als4000_playback =
 396 {
 397         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 398                                  SNDRV_PCM_INFO_MMAP_VALID),
 399         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 400                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 401         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 402         .rate_min =             4000,
 403         .rate_max =             48000,
 404         .channels_min =         1,
 405         .channels_max =         2,
 406         .buffer_bytes_max =     65536,
 407         .period_bytes_min =     64,
 408         .period_bytes_max =     65536,
 409         .periods_min =          1,
 410         .periods_max =          1024,
 411         .fifo_size =            0
 412 };
 413
 414 static snd_pcm_hardware_t snd_als4000_capture =
 415 {
 416         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 417                                  SNDRV_PCM_INFO_MMAP_VALID),
 418         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 419                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 420         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 421         .rate_min =             4000,
 422         .rate_max =             48000,
 423         .channels_min =         1,
 424         .channels_max =         2,
 425         .buffer_bytes_max =     65536,
 426         .period_bytes_min =     64,
 427         .period_bytes_max =     65536,
 428         .periods_min =          1,
 429         .periods_max =          1024,
 430         .fifo_size =            0
 431 };
 432
 433 /*****************************************************************/
 434
 435 static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
 436 {
 437         sb_t *chip = snd_pcm_substream_chip(substream);
 438         snd_pcm_runtime_t *runtime = substream->runtime;
 439
 440         chip->playback_substream = substream;
 441         runtime->hw = snd_als4000_playback;
 442         return 0;
 443 }
 444
 445 static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
 446 {
 447         sb_t *chip = snd_pcm_substream_chip(substream);
 448
 449         chip->playback_substream = NULL;
 450         snd_pcm_lib_free_pages(substream);
 451         return 0;
 452 }
 453
 454 static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
 455 {
 456         sb_t *chip = snd_pcm_substream_chip(substream);
 457         snd_pcm_runtime_t *runtime = substream->runtime;
 458
 459         chip->capture_substream = substream;
 460         runtime->hw = snd_als4000_capture;
 461         return 0;
 462 }
 463
 464 static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
 465 {
 466         sb_t *chip = snd_pcm_substream_chip(substream);
 467
 468         chip->capture_substream = NULL;
 469         snd_pcm_lib_free_pages(substream);
 470         return 0;
 471 }
 472
 473 /******************************************************************/
 474
 475 static snd_pcm_ops_t snd_als4000_playback_ops = {
 476         .open =         snd_als4000_playback_open,
 477         .close =        snd_als4000_playback_close,
 478         .ioctl =        snd_pcm_lib_ioctl,
 479         .hw_params =    snd_als4000_hw_params,
 480         .hw_free =      snd_als4000_hw_free,
 481         .prepare =      snd_als4000_playback_prepare,
 482         .trigger =      snd_als4000_playback_trigger,
 483         .pointer =      snd_als4000_playback_pointer
 484 };
 485
 486 static snd_pcm_ops_t snd_als4000_capture_ops = {
 487         .open =         snd_als4000_capture_open,
 488         .close =        snd_als4000_capture_close,
 489         .ioctl =        snd_pcm_lib_ioctl,
 490         .hw_params =    snd_als4000_hw_params,
 491         .hw_free =      snd_als4000_hw_free,
 492         .prepare =      snd_als4000_capture_prepare,
 493         .trigger =      snd_als4000_capture_trigger,
 494         .pointer =      snd_als4000_capture_pointer
 495 };
 496
 497 static void snd_als4000_pcm_free(snd_pcm_t *pcm)
 498 {
 499         sb_t *chip = snd_magic_cast(sb_t, pcm->private_data, return);
 500         chip->pcm = NULL;
 501         snd_pcm_lib_preallocate_free_for_all(pcm);
 502 }
 503
 504 static int __devinit snd_als4000_pcm(sb_t *chip, int device)
 505 {
 506         snd_pcm_t *pcm;
 507         int err;
 508
 509         if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 510                 return err;
 511         pcm->private_free = snd_als4000_pcm_free;
 512         pcm->private_data = chip;
 513         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 514         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 515         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 516
 517         snd_pcm_lib_preallocate_pci_pages_for_all(chip->pci, pcm, 64*1024, 64*1024);
 518
 519         chip->pcm = pcm;
 520
 521         return 0;
 522 }
 523
 524 /******************************************************************/
 525
 526 static void __devinit snd_als4000_set_addr(unsigned long gcr,
 527                                         unsigned int sb,
 528                                         unsigned int mpu,
 529                                         unsigned int opl,
 530                                         unsigned int game)
 531 {
 532         u32 confA = 0;
 533         u32 confB = 0;
 534
 535         if (mpu > 0)
 536                 confB |= (mpu | 1) << 16;
 537         if (sb > 0)
 538                 confB |= (sb | 1);
 539         if (game > 0)
 540                 confA |= (game | 1) << 16;
 541         if (opl > 0)
 542                 confA |= (opl | 1);
 543         snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 544         snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 545 }
 546
 547 static void __devinit snd_als4000_configure(sb_t *chip)
 548 {
 549         unsigned long flags;
 550         unsigned tmp;
 551         int i;
 552
 553         /* do some more configuration */
 554         spin_lock_irqsave(&chip->mixer_lock, flags);
 555         tmp = snd_sbmixer_read(chip, 0xc0);
 556         snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 557         /* always select DMA channel 0, since we do not actually use DMA */
 558         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 559         snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 560         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 561
 562         spin_lock_irqsave(&chip->reg_lock,flags);
 563         /* magic number. Enables interrupts(?) */
 564         snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 565         for(i = 0x91; i <= 0x96; ++i)
 566                 snd_als4000_gcr_write(chip, i, 0);
 567
 568         snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 569         spin_unlock_irqrestore(&chip->reg_lock,flags);
 570 }
 571
 572 static void snd_card_als4000_free( snd_card_t *card )
 573 {
 574         snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
 575         /* make sure that interrupts are disabled */
 576         snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 577 }
 578
 579 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 580                                           const struct pci_device_id *pci_id)
 581 {
 582         static int dev;
 583         snd_card_t *card;
 584         snd_card_als4000_t *acard;
 585         unsigned long gcr;
 586         struct resource *res_gcr_port;
 587         sb_t *chip;
 588         opl3_t *opl3;
 589         unsigned short word;
 590         int err;
 591
 592         if (dev >= SNDRV_CARDS)
 593                 return -ENODEV;
 594         if (!enable[dev]) {
 595                 dev++;
 596                 return -ENOENT;
 597         }
 598
 599         /* enable PCI device */
 600         if ((err = pci_enable_device(pci)) < 0) {
 601                 return err;
 602         }
 603         /* check, if we can restrict PCI DMA transfers to 24 bits */
 604         if (!pci_dma_supported(pci, 0x00ffffff)) {
 605                 snd_printk("architecture does not support 24bit PCI busmaster DMA\n");
 606                 return -ENXIO;
 607         }
 608         pci_set_dma_mask(pci, 0x00ffffff);
 609
 610         gcr = pci_resource_start(pci, 0);
 611         if ((res_gcr_port = request_region(gcr, 0x40, "ALS4000")) == NULL) {
 612                 snd_printk("unable to grab region 0x%lx-0x%lx\n", gcr, gcr + 0x40 - 1);
 613                 return -EBUSY;
 614         }
 615
 616         pci_read_config_word(pci, PCI_COMMAND, &word);
 617         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 618         pci_set_master(pci);
 619
 620         /* disable all legacy ISA stuff except for joystick */
 621         snd_als4000_set_addr(gcr, 0, 0, 0, joystick_port[dev]);
 622
 623         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 624                             sizeof( snd_card_als4000_t ) );
 625         if (card == NULL) {
 626                 release_resource(res_gcr_port);
 627                 kfree_nocheck(res_gcr_port);
 628                 return -ENOMEM;
 629         }
 630
 631         acard = (snd_card_als4000_t *)card->private_data;
 632         acard->gcr = gcr;
 633         card->private_free = snd_card_als4000_free;
 634
 635         if ((err = snd_sbdsp_create(card,
 636                                     gcr + 0x10,
 637                                     pci->irq,
 638                                     snd_als4000_interrupt,
 639                                     -1,
 640                                     -1,
 641                                     SB_HW_ALS4000,
 642                                     &chip)) < 0) {
 643                 release_resource(res_gcr_port);
 644                 kfree_nocheck(res_gcr_port);
 645                 snd_card_free(card);
 646                 return err;
 647         }
 648
 649         chip->pci = pci;
 650         chip->alt_port = gcr;
 651         chip->res_alt_port = res_gcr_port;
 652
 653         snd_als4000_configure(chip);
 654
 655         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 656                                         gcr+0x30, 1, pci->irq, 0,
 657                                         &chip->rmidi)) < 0) {
 658                 snd_card_free(card);
 659                 printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
 660                 return err;
 661         }
 662
 663         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 664                 snd_card_free(card);
 665                 return err;
 666         }
 667         if ((err = snd_sbmixer_new(chip)) < 0) {
 668                 snd_card_free(card);
 669                 return err;
 670         }
 671
 672         if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 673                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 674                 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
 675                            gcr+0x10, gcr+0x12 );
 676         } else {
 677                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 678                         snd_card_free(card);
 679                         return err;
 680                 }
 681         }
 682
 683         strcpy(card->driver, "ALS4000");
 684         strcpy(card->shortname, "Avance Logic ALS4000");
 685         sprintf(card->longname, "%s at 0x%lx, irq %i",
 686                 card->shortname, chip->alt_port, chip->irq);
 687
 688         if ((err = snd_card_register(card)) < 0) {
 689                 snd_card_free(card);
 690                 return err;
 691         }
 692         pci_set_drvdata(pci, card);
 693         dev++;
 694         return 0;
 695 }
 696
 697 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 698 {
 699         snd_card_free(pci_get_drvdata(pci));
 700         pci_set_drvdata(pci, NULL);
 701 }
 702
 703 static struct pci_driver driver = {
 704         .name = "ALS4000",
 705         .id_table = snd_als4000_ids,
 706         .probe = snd_card_als4000_probe,
 707         .remove = __devexit_p(snd_card_als4000_remove),
 708 };
 709
 710 static int __init alsa_card_als4000_init(void)
 711 {
 712         int err;
 713
 714         if ((err = pci_module_init(&driver)) < 0) {
 715 #ifdef MODULE
 716                 printk(KERN_ERR "no ALS4000 based soundcards found or device busy\n");
 717 #endif
 718                 return err;
 719         }
 720         return 0;
 721 }
 722
 723 static void __exit alsa_card_als4000_exit(void)
 724 {
 725         pci_unregister_driver(&driver);
 726 }
 727
 728 module_init(alsa_card_als4000_init)
 729 module_exit(alsa_card_als4000_exit)
 730
 731 #ifndef MODULE
 732
 733 /* format is: snd-als4000=enable,index,id */
 734
 735 static int __init alsa_card_als4000_setup(char *str)
 736 {
 737         static unsigned __initdata nr_dev = 0;
 738
 739         if (nr_dev >= SNDRV_CARDS)
 740                 return 0;
 741         (void)(get_option(&str,&enable[nr_dev]) == 2 &&
 742                get_option(&str,&index[nr_dev]) == 2 &&
 743                get_id(&str,&id[nr_dev]) == 2);
 744         nr_dev++;
 745         return 1;
 746 }
 747
 748 __setup("snd-als4000=", alsa_card_als4000_setup);
 749
 750 #endif /* ifndef MODULE */