sound/pci/als4000.c

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