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 #endif
 109 } snd_card_als4000_t;
 110
 111 static struct pci_device_id snd_als4000_ids[] = {
 112         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 113         { 0, }
 114 };
 115
 116 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 117
 118 static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
 119 {
 120         outb(reg, port+0x0c);
 121         outl(val, port+0x08);
 122 }
 123
 124 static inline void snd_als4000_gcr_write(sb_t *sb, u32 reg, u32 val)
 125 {
 126         snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
 127 }
 128
 129 static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
 130 {
 131         outb(reg, port+0x0c);
 132         return inl(port+0x08);
 133 }
 134
 135 static inline u32 snd_als4000_gcr_read(sb_t *sb, u32 reg)
 136 {
 137         return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 138 }
 139
 140 static void snd_als4000_set_rate(sb_t *chip, unsigned int rate)
 141 {
 142         if (!(chip->mode & SB_RATE_LOCK)) {
 143                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 144                 snd_sbdsp_command(chip, rate>>8);
 145                 snd_sbdsp_command(chip, rate);
 146         }
 147 }
 148
 149 static void snd_als4000_set_capture_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 150 {
 151         snd_als4000_gcr_write(chip, 0xa2, addr);
 152         snd_als4000_gcr_write(chip, 0xa3, (size-1));
 153 }
 154
 155 static void snd_als4000_set_playback_dma(sb_t *chip, dma_addr_t addr, unsigned size)
 156 {
 157         snd_als4000_gcr_write(chip, 0x91, addr);
 158         snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 159 }
 160
 161 #define ALS4000_FORMAT_SIGNED   (1<<0)
 162 #define ALS4000_FORMAT_16BIT    (1<<1)
 163 #define ALS4000_FORMAT_STEREO   (1<<2)
 164
 165 static int snd_als4000_get_format(snd_pcm_runtime_t *runtime)
 166 {
 167         int result;
 168
 169         result = 0;
 170         if (snd_pcm_format_signed(runtime->format))
 171                 result |= ALS4000_FORMAT_SIGNED;
 172         if (snd_pcm_format_physical_width(runtime->format) == 16)
 173                 result |= ALS4000_FORMAT_16BIT;
 174         if (runtime->channels > 1)
 175                 result |= ALS4000_FORMAT_STEREO;
 176         return result;
 177 }
 178
 179 /* structure for setting up playback */
 180 static struct {
 181         unsigned char dsp_cmd, dma_on, dma_off, format;
 182 } playback_cmd_vals[]={
 183 /* ALS4000_FORMAT_U8_MONO */
 184 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 185 /* ALS4000_FORMAT_S8_MONO */
 186 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 187 /* ALS4000_FORMAT_U16L_MONO */
 188 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 189 /* ALS4000_FORMAT_S16L_MONO */
 190 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 191 /* ALS4000_FORMAT_U8_STEREO */
 192 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 193 /* ALS4000_FORMAT_S8_STEREO */
 194 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 195 /* ALS4000_FORMAT_U16L_STEREO */
 196 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 197 /* ALS4000_FORMAT_S16L_STEREO */
 198 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 199 };
 200 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 201
 202 /* structure for setting up capture */
 203 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 204 static unsigned char capture_cmd_vals[]=
 205 {
 206 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 207 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 208 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 209 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 210 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 211 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 212 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 213 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 214 };
 215 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 216
 217 static int snd_als4000_hw_params(snd_pcm_substream_t * substream,
 218                                  snd_pcm_hw_params_t * hw_params)
 219 {
 220         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 221 }
 222
 223 static int snd_als4000_hw_free(snd_pcm_substream_t * substream)
 224 {
 225         snd_pcm_lib_free_pages(substream);
 226         return 0;
 227 }
 228
 229 static int snd_als4000_capture_prepare(snd_pcm_substream_t * substream)
 230 {
 231         unsigned long flags;
 232         sb_t *chip = snd_pcm_substream_chip(substream);
 233         snd_pcm_runtime_t *runtime = substream->runtime;
 234         unsigned long size;
 235         unsigned count;
 236
 237         chip->capture_format = snd_als4000_get_format(runtime);
 238
 239         size = snd_pcm_lib_buffer_bytes(substream);
 240         count = snd_pcm_lib_period_bytes(substream);
 241
 242         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 243                 count >>=1;
 244         count--;
 245
 246         spin_lock_irqsave(&chip->reg_lock, flags);
 247         snd_als4000_set_rate(chip, runtime->rate);
 248         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 249         spin_unlock_irqrestore(&chip->reg_lock, flags);
 250         spin_lock_irqsave(&chip->mixer_lock, flags );
 251         snd_sbmixer_write(chip, 0xdc, count);
 252         snd_sbmixer_write(chip, 0xdd, count>>8);
 253         spin_unlock_irqrestore(&chip->mixer_lock, flags );
 254         return 0;
 255 }
 256
 257 static int snd_als4000_playback_prepare(snd_pcm_substream_t *substream)
 258 {
 259         unsigned long flags;
 260         sb_t *chip = snd_pcm_substream_chip(substream);
 261         snd_pcm_runtime_t *runtime = substream->runtime;
 262         unsigned long size;
 263         unsigned count;
 264
 265         chip->playback_format = snd_als4000_get_format(runtime);
 266
 267         size = snd_pcm_lib_buffer_bytes(substream);
 268         count = snd_pcm_lib_period_bytes(substream);
 269
 270         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 271                 count >>=1;
 272         count--;
 273
 274         /* FIXME: from second playback on, there's a lot more clicks and pops
 275          * involved here than on first playback. Fiddling with
 276          * tons of different settings didn't help (DMA, speaker on/off,
 277          * reordering, ...). Something seems to get enabled on playback
 278          * that I haven't found out how to disable again, which then causes
 279          * the switching pops to reach the speakers the next time here. */
 280         spin_lock_irqsave(&chip->reg_lock, flags);
 281         snd_als4000_set_rate(chip, runtime->rate);
 282         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 283
 284         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 285         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 286         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 287         snd_sbdsp_command(chip, playback_cmd(chip).format);
 288         snd_sbdsp_command(chip, count);
 289         snd_sbdsp_command(chip, count>>8);
 290         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 291         spin_unlock_irqrestore(&chip->reg_lock, flags);
 292
 293         return 0;
 294 }
 295
 296 static int snd_als4000_capture_trigger(snd_pcm_substream_t * substream, int cmd)
 297 {
 298         sb_t *chip = snd_pcm_substream_chip(substream);
 299         int result = 0;
 300
 301         spin_lock(&chip->mixer_lock);
 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(&chip->mixer_lock);
 312         return result;
 313 }
 314
 315 static int snd_als4000_playback_trigger(snd_pcm_substream_t * substream, int cmd)
 316 {
 317         sb_t *chip = snd_pcm_substream_chip(substream);
 318         int result = 0;
 319
 320         spin_lock(&chip->reg_lock);
 321         if (cmd == SNDRV_PCM_TRIGGER_START) {
 322                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 323                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 324         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 325                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 326                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 327         } else {
 328                 result = -EINVAL;
 329         }
 330         spin_unlock(&chip->reg_lock);
 331         return result;
 332 }
 333
 334 static snd_pcm_uframes_t snd_als4000_capture_pointer(snd_pcm_substream_t * substream)
 335 {
 336         sb_t *chip = snd_pcm_substream_chip(substream);
 337         unsigned int result;
 338
 339         spin_lock(&chip->reg_lock);
 340         result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 341         spin_unlock(&chip->reg_lock);
 342         return bytes_to_frames( substream->runtime, result );
 343 }
 344
 345 static snd_pcm_uframes_t snd_als4000_playback_pointer(snd_pcm_substream_t * substream)
 346 {
 347         sb_t *chip = snd_pcm_substream_chip(substream);
 348         unsigned result;
 349
 350         spin_lock(&chip->reg_lock);
 351         result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 352         spin_unlock(&chip->reg_lock);
 353         return bytes_to_frames( substream->runtime, result );
 354 }
 355
 356 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 357 {
 358         sb_t *chip = dev_id;
 359         unsigned gcr_status;
 360         unsigned sb_status;
 361
 362         /* find out which bit of the ALS4000 produced the interrupt */
 363         gcr_status = inb(chip->alt_port + 0xe);
 364
 365         if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 366                 snd_pcm_period_elapsed(chip->playback_substream);
 367         if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 368                 snd_pcm_period_elapsed(chip->capture_substream);
 369         if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 370                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 371         /* release the gcr */
 372         outb(gcr_status, chip->alt_port + 0xe);
 373
 374         spin_lock(&chip->mixer_lock);
 375         sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 376         spin_unlock(&chip->mixer_lock);
 377
 378         if (sb_status & SB_IRQTYPE_8BIT)
 379                 snd_sb_ack_8bit(chip);
 380         if (sb_status & SB_IRQTYPE_16BIT)
 381                 snd_sb_ack_16bit(chip);
 382         if (sb_status & SB_IRQTYPE_MPUIN)
 383                 inb(chip->mpu_port);
 384         if (sb_status & 0x20)
 385                 inb(SBP(chip, RESET));
 386         return IRQ_HANDLED;
 387 }
 388
 389 /*****************************************************************/
 390
 391 static snd_pcm_hardware_t snd_als4000_playback =
 392 {
 393         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 394                                  SNDRV_PCM_INFO_MMAP_VALID),
 395         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 396                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 397         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 398         .rate_min =             4000,
 399         .rate_max =             48000,
 400         .channels_min =         1,
 401         .channels_max =         2,
 402         .buffer_bytes_max =     65536,
 403         .period_bytes_min =     64,
 404         .period_bytes_max =     65536,
 405         .periods_min =          1,
 406         .periods_max =          1024,
 407         .fifo_size =            0
 408 };
 409
 410 static snd_pcm_hardware_t snd_als4000_capture =
 411 {
 412         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 413                                  SNDRV_PCM_INFO_MMAP_VALID),
 414         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 415                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 416         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 417         .rate_min =             4000,
 418         .rate_max =             48000,
 419         .channels_min =         1,
 420         .channels_max =         2,
 421         .buffer_bytes_max =     65536,
 422         .period_bytes_min =     64,
 423         .period_bytes_max =     65536,
 424         .periods_min =          1,
 425         .periods_max =          1024,
 426         .fifo_size =            0
 427 };
 428
 429 /*****************************************************************/
 430
 431 static int snd_als4000_playback_open(snd_pcm_substream_t * substream)
 432 {
 433         sb_t *chip = snd_pcm_substream_chip(substream);
 434         snd_pcm_runtime_t *runtime = substream->runtime;
 435
 436         chip->playback_substream = substream;
 437         runtime->hw = snd_als4000_playback;
 438         return 0;
 439 }
 440
 441 static int snd_als4000_playback_close(snd_pcm_substream_t * substream)
 442 {
 443         sb_t *chip = snd_pcm_substream_chip(substream);
 444
 445         chip->playback_substream = NULL;
 446         snd_pcm_lib_free_pages(substream);
 447         return 0;
 448 }
 449
 450 static int snd_als4000_capture_open(snd_pcm_substream_t * substream)
 451 {
 452         sb_t *chip = snd_pcm_substream_chip(substream);
 453         snd_pcm_runtime_t *runtime = substream->runtime;
 454
 455         chip->capture_substream = substream;
 456         runtime->hw = snd_als4000_capture;
 457         return 0;
 458 }
 459
 460 static int snd_als4000_capture_close(snd_pcm_substream_t * substream)
 461 {
 462         sb_t *chip = snd_pcm_substream_chip(substream);
 463
 464         chip->capture_substream = NULL;
 465         snd_pcm_lib_free_pages(substream);
 466         return 0;
 467 }
 468
 469 /******************************************************************/
 470
 471 static snd_pcm_ops_t snd_als4000_playback_ops = {
 472         .open =         snd_als4000_playback_open,
 473         .close =        snd_als4000_playback_close,
 474         .ioctl =        snd_pcm_lib_ioctl,
 475         .hw_params =    snd_als4000_hw_params,
 476         .hw_free =      snd_als4000_hw_free,
 477         .prepare =      snd_als4000_playback_prepare,
 478         .trigger =      snd_als4000_playback_trigger,
 479         .pointer =      snd_als4000_playback_pointer
 480 };
 481
 482 static snd_pcm_ops_t snd_als4000_capture_ops = {
 483         .open =         snd_als4000_capture_open,
 484         .close =        snd_als4000_capture_close,
 485         .ioctl =        snd_pcm_lib_ioctl,
 486         .hw_params =    snd_als4000_hw_params,
 487         .hw_free =      snd_als4000_hw_free,
 488         .prepare =      snd_als4000_capture_prepare,
 489         .trigger =      snd_als4000_capture_trigger,
 490         .pointer =      snd_als4000_capture_pointer
 491 };
 492
 493 static int __devinit snd_als4000_pcm(sb_t *chip, int device)
 494 {
 495         snd_pcm_t *pcm;
 496         int err;
 497
 498         if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 499                 return err;
 500         pcm->private_data = chip;
 501         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 502         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 503         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 504
 505         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 506                                               64*1024, 64*1024);
 507
 508         chip->pcm = pcm;
 509
 510         return 0;
 511 }
 512
 513 /******************************************************************/
 514
 515 static void snd_als4000_set_addr(unsigned long gcr,
 516                                         unsigned int sb,
 517                                         unsigned int mpu,
 518                                         unsigned int opl,
 519                                         unsigned int game)
 520 {
 521         u32 confA = 0;
 522         u32 confB = 0;
 523
 524         if (mpu > 0)
 525                 confB |= (mpu | 1) << 16;
 526         if (sb > 0)
 527                 confB |= (sb | 1);
 528         if (game > 0)
 529                 confA |= (game | 1) << 16;
 530         if (opl > 0)
 531                 confA |= (opl | 1);
 532         snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 533         snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 534 }
 535
 536 static void __devinit snd_als4000_configure(sb_t *chip)
 537 {
 538         unsigned tmp;
 539         int i;
 540
 541         /* do some more configuration */
 542         spin_lock_irq(&chip->mixer_lock);
 543         tmp = snd_sbmixer_read(chip, 0xc0);
 544         snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 545         /* always select DMA channel 0, since we do not actually use DMA */
 546         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 547         snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 548         spin_unlock_irq(&chip->mixer_lock);
 549
 550         spin_lock_irq(&chip->reg_lock);
 551         /* magic number. Enables interrupts(?) */
 552         snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 553         for(i = 0x91; i <= 0x96; ++i)
 554                 snd_als4000_gcr_write(chip, i, 0);
 555
 556         snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 557         spin_unlock_irq(&chip->reg_lock);
 558 }
 559
 560 #ifdef SUPPORT_JOYSTICK
 561 static int __devinit snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev)
 562 {
 563         struct gameport *gp;
 564         struct resource *r;
 565         int io_port;
 566
 567         if (joystick_port[dev] == 0)
 568                 return -ENODEV;
 569
 570         if (joystick_port[dev] == 1) { /* auto-detect */
 571                 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
 572                         r = request_region(io_port, 8, "ALS4000 gameport");
 573                         if (r)
 574                                 break;
 575                 }
 576         } else {
 577                 io_port = joystick_port[dev];
 578                 r = request_region(io_port, 8, "ALS4000 gameport");
 579         }
 580
 581         if (!r) {
 582                 printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
 583                 return -EBUSY;
 584         }
 585
 586         acard->gameport = gp = gameport_allocate_port();
 587         if (!gp) {
 588                 printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
 589                 release_and_free_resource(r);
 590                 return -ENOMEM;
 591         }
 592
 593         gameport_set_name(gp, "ALS4000 Gameport");
 594         gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
 595         gameport_set_dev_parent(gp, &acard->pci->dev);
 596         gp->io = io_port;
 597         gameport_set_port_data(gp, r);
 598
 599         /* Enable legacy joystick port */
 600         snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
 601
 602         gameport_register_port(acard->gameport);
 603
 604         return 0;
 605 }
 606
 607 static void snd_als4000_free_gameport(snd_card_als4000_t *acard)
 608 {
 609         if (acard->gameport) {
 610                 struct resource *r = gameport_get_port_data(acard->gameport);
 611
 612                 gameport_unregister_port(acard->gameport);
 613                 acard->gameport = NULL;
 614
 615                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
 616                 release_and_free_resource(r);
 617         }
 618 }
 619 #else
 620 static inline int snd_als4000_create_gameport(snd_card_als4000_t *acard, int dev) { return -ENOSYS; }
 621 static inline void snd_als4000_free_gameport(snd_card_als4000_t *acard) { }
 622 #endif
 623
 624 static void snd_card_als4000_free( snd_card_t *card )
 625 {
 626         snd_card_als4000_t * acard = (snd_card_als4000_t *)card->private_data;
 627
 628         /* make sure that interrupts are disabled */
 629         snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 630         /* free resources */
 631         snd_als4000_free_gameport(acard);
 632         pci_release_regions(acard->pci);
 633         pci_disable_device(acard->pci);
 634 }
 635
 636 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 637                                           const struct pci_device_id *pci_id)
 638 {
 639         static int dev;
 640         snd_card_t *card;
 641         snd_card_als4000_t *acard;
 642         unsigned long gcr;
 643         sb_t *chip;
 644         opl3_t *opl3;
 645         unsigned short word;
 646         int err;
 647
 648         if (dev >= SNDRV_CARDS)
 649                 return -ENODEV;
 650         if (!enable[dev]) {
 651                 dev++;
 652                 return -ENOENT;
 653         }
 654
 655         /* enable PCI device */
 656         if ((err = pci_enable_device(pci)) < 0) {
 657                 return err;
 658         }
 659         /* check, if we can restrict PCI DMA transfers to 24 bits */
 660         if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
 661             pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
 662                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
 663                 pci_disable_device(pci);
 664                 return -ENXIO;
 665         }
 666
 667         if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 668                 pci_disable_device(pci);
 669                 return err;
 670         }
 671         gcr = pci_resource_start(pci, 0);
 672
 673         pci_read_config_word(pci, PCI_COMMAND, &word);
 674         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 675         pci_set_master(pci);
 676
 677         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 678                             sizeof( snd_card_als4000_t ) );
 679         if (card == NULL) {
 680                 pci_release_regions(pci);
 681                 pci_disable_device(pci);
 682                 return -ENOMEM;
 683         }
 684
 685         acard = (snd_card_als4000_t *)card->private_data;
 686         acard->pci = pci;
 687         acard->gcr = gcr;
 688         card->private_free = snd_card_als4000_free;
 689
 690         /* disable all legacy ISA stuff */
 691         snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0);
 692
 693         if ((err = snd_sbdsp_create(card,
 694                                     gcr + 0x10,
 695                                     pci->irq,
 696                                     snd_als4000_interrupt,
 697                                     -1,
 698                                     -1,
 699                                     SB_HW_ALS4000,
 700                                     &chip)) < 0) {
 701                 snd_card_free(card);
 702                 return err;
 703         }
 704
 705         chip->pci = pci;
 706         chip->alt_port = gcr;
 707         snd_card_set_dev(card, &pci->dev);
 708
 709         snd_als4000_configure(chip);
 710
 711         strcpy(card->driver, "ALS4000");
 712         strcpy(card->shortname, "Avance Logic ALS4000");
 713         sprintf(card->longname, "%s at 0x%lx, irq %i",
 714                 card->shortname, chip->alt_port, chip->irq);
 715
 716         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 717                                         gcr+0x30, 1, pci->irq, 0,
 718                                         &chip->rmidi)) < 0) {
 719                 snd_card_free(card);
 720                 printk(KERN_ERR "als4000: no MPU-401device at 0x%lx ?\n", gcr+0x30);
 721                 return err;
 722         }
 723
 724         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 725                 snd_card_free(card);
 726                 return err;
 727         }
 728         if ((err = snd_sbmixer_new(chip)) < 0) {
 729                 snd_card_free(card);
 730                 return err;
 731         }
 732
 733         if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 734                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 735                 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx ?\n",
 736                            gcr+0x10, gcr+0x12 );
 737         } else {
 738                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 739                         snd_card_free(card);
 740                         return err;
 741                 }
 742         }
 743
 744         snd_als4000_create_gameport(acard, dev);
 745
 746         if ((err = snd_card_register(card)) < 0) {
 747                 snd_card_free(card);
 748                 return err;
 749         }
 750         pci_set_drvdata(pci, card);
 751         dev++;
 752         return 0;
 753 }
 754
 755 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 756 {
 757         snd_card_free(pci_get_drvdata(pci));
 758         pci_set_drvdata(pci, NULL);
 759 }
 760
 761 static struct pci_driver driver = {
 762         .name = "ALS4000",
 763         .id_table = snd_als4000_ids,
 764         .probe = snd_card_als4000_probe,
 765         .remove = __devexit_p(snd_card_als4000_remove),
 766 };
 767
 768 static int __init alsa_card_als4000_init(void)
 769 {
 770         return pci_register_driver(&driver);
 771 }
 772
 773 static void __exit alsa_card_als4000_exit(void)
 774 {
 775         pci_unregister_driver(&driver);
 776 }
 777
 778 module_init(alsa_card_als4000_init)
 779 module_exit(alsa_card_als4000_exit)