git.oblomov.eu Git - linux-2.6/blob - 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@perex.cz>
   5  *  Copyright (C) 2002 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
   6  *
   7  *  Framework borrowed from Massimo Piccioni's card-als100.c.
   8  *
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  * NOTES
  25  *
  26  *  Since Avance does not provide any meaningful documentation, and I
  27  *  bought an ALS4000 based soundcard, I was forced to base this driver
  28  *  on reverse engineering.
  29  *
  30  *  Note: this is no longer true. Pretty verbose chip docu (ALS4000a.PDF)
  31  *  can be found on the ALSA web site.
  32  *
  33  *  The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
  34  *  ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport
  35  *  interface. These subsystems can be mapped into ISA io-port space,
  36  *  using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ
  37  *  services to the subsystems.
  38  *
  39  * While ALS4000 is very similar to a SoundBlaster, the differences in
  40  * DMA and capturing require more changes to the SoundBlaster than
  41  * desirable, so I made this separate driver.
  42  *
  43  * The ALS4000 can do real full duplex playback/capture.
  44  *
  45  * FMDAC:
  46  * - 0x4f -> port 0x14
  47  * - port 0x15 |= 1
  48  *
  49  * Enable/disable 3D sound:
  50  * - 0x50 -> port 0x14
  51  * - change bit 6 (0x40) of port 0x15
  52  *
  53  * Set QSound:
  54  * - 0xdb -> port 0x14
  55  * - set port 0x15:
  56  *   0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
  57  *
  58  * Set KSound:
  59  * - value -> some port 0x0c0d
  60  *
  61  * ToDo:
  62  * - Proper shared IRQ handling?
  63  * - power management? (card can do voice wakeup according to datasheet!!)
  64  */
  65
  66 #include <sound/driver.h>
  67 #include <asm/io.h>
  68 #include <linux/init.h>
  69 #include <linux/pci.h>
  70 #include <linux/slab.h>
  71 #include <linux/gameport.h>
  72 #include <linux/moduleparam.h>
  73 #include <linux/dma-mapping.h>
  74 #include <sound/core.h>
  75 #include <sound/pcm.h>
  76 #include <sound/rawmidi.h>
  77 #include <sound/mpu401.h>
  78 #include <sound/opl3.h>
  79 #include <sound/sb.h>
  80 #include <sound/initval.h>
  81
  82 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
  83 MODULE_DESCRIPTION("Avance Logic ALS4000");
  84 MODULE_LICENSE("GPL");
  85 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
  86
  87 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  88 #define SUPPORT_JOYSTICK 1
  89 #endif
  90
  91 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  92 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  93 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  94 #ifdef SUPPORT_JOYSTICK
  95 static int joystick_port[SNDRV_CARDS];
  96 #endif
  97
  98 module_param_array(index, int, NULL, 0444);
  99 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
 100 module_param_array(id, charp, NULL, 0444);
 101 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
 102 module_param_array(enable, bool, NULL, 0444);
 103 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
 104 #ifdef SUPPORT_JOYSTICK
 105 module_param_array(joystick_port, int, NULL, 0444);
 106 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 107 #endif
 108
 109 struct snd_card_als4000 {
 110         /* most frequent access first */
 111         unsigned long gcr;
 112         struct pci_dev *pci;
 113         struct snd_sb *chip;
 114 #ifdef SUPPORT_JOYSTICK
 115         struct gameport *gameport;
 116 #endif
 117 };
 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(struct snd_sb *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(struct snd_sb *sb, u32 reg)
 144 {
 145         return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 146 }
 147
 148 static void snd_als4000_set_rate(struct snd_sb *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 inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
 158                                                dma_addr_t addr, unsigned size)
 159 {
 160         snd_als4000_gcr_write(chip, 0xa2, addr);
 161         snd_als4000_gcr_write(chip, 0xa3, (size-1));
 162 }
 163
 164 static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
 165                                                 dma_addr_t addr, unsigned size)
 166 {
 167         snd_als4000_gcr_write(chip, 0x91, addr);
 168         snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 169 }
 170
 171 #define ALS4000_FORMAT_SIGNED   (1<<0)
 172 #define ALS4000_FORMAT_16BIT    (1<<1)
 173 #define ALS4000_FORMAT_STEREO   (1<<2)
 174
 175 static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
 176 {
 177         int result;
 178
 179         result = 0;
 180         if (snd_pcm_format_signed(runtime->format))
 181                 result |= ALS4000_FORMAT_SIGNED;
 182         if (snd_pcm_format_physical_width(runtime->format) == 16)
 183                 result |= ALS4000_FORMAT_16BIT;
 184         if (runtime->channels > 1)
 185                 result |= ALS4000_FORMAT_STEREO;
 186         return result;
 187 }
 188
 189 /* structure for setting up playback */
 190 static const struct {
 191         unsigned char dsp_cmd, dma_on, dma_off, format;
 192 } playback_cmd_vals[]={
 193 /* ALS4000_FORMAT_U8_MONO */
 194 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 195 /* ALS4000_FORMAT_S8_MONO */
 196 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 197 /* ALS4000_FORMAT_U16L_MONO */
 198 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 199 /* ALS4000_FORMAT_S16L_MONO */
 200 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 201 /* ALS4000_FORMAT_U8_STEREO */
 202 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 203 /* ALS4000_FORMAT_S8_STEREO */
 204 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 205 /* ALS4000_FORMAT_U16L_STEREO */
 206 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 207 /* ALS4000_FORMAT_S16L_STEREO */
 208 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 209 };
 210 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 211
 212 /* structure for setting up capture */
 213 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 214 static const unsigned char capture_cmd_vals[]=
 215 {
 216 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 217 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 218 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 219 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 220 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 221 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 222 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 223 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 224 };
 225 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 226
 227 static int snd_als4000_hw_params(struct snd_pcm_substream *substream,
 228                                  struct snd_pcm_hw_params *hw_params)
 229 {
 230         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 231 }
 232
 233 static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
 234 {
 235         snd_pcm_lib_free_pages(substream);
 236         return 0;
 237 }
 238
 239 static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
 240 {
 241         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 242         struct snd_pcm_runtime *runtime = substream->runtime;
 243         unsigned long size;
 244         unsigned count;
 245
 246         chip->capture_format = snd_als4000_get_format(runtime);
 247
 248         size = snd_pcm_lib_buffer_bytes(substream);
 249         count = snd_pcm_lib_period_bytes(substream);
 250
 251         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 252                 count >>=1;
 253         count--;
 254
 255         spin_lock_irq(&chip->reg_lock);
 256         snd_als4000_set_rate(chip, runtime->rate);
 257         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 258         spin_unlock_irq(&chip->reg_lock);
 259         spin_lock_irq(&chip->mixer_lock);
 260         snd_sbmixer_write(chip, 0xdc, count);
 261         snd_sbmixer_write(chip, 0xdd, count>>8);
 262         spin_unlock_irq(&chip->mixer_lock);
 263         return 0;
 264 }
 265
 266 static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
 267 {
 268         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 269         struct snd_pcm_runtime *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_irq(&chip->reg_lock);
 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_irq(&chip->reg_lock);
 300
 301         return 0;
 302 }
 303
 304 static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 305 {
 306         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 307         int result = 0;
 308
 309         spin_lock(&chip->mixer_lock);
 310         switch (cmd) {
 311         case SNDRV_PCM_TRIGGER_START:
 312         case SNDRV_PCM_TRIGGER_RESUME:
 313                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 314                 snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
 315                 break;
 316         case SNDRV_PCM_TRIGGER_STOP:
 317         case SNDRV_PCM_TRIGGER_SUSPEND:
 318                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 319                 snd_sbmixer_write(chip, 0xde, 0);
 320                 break;
 321         default:
 322                 result = -EINVAL;
 323                 break;
 324         }
 325         spin_unlock(&chip->mixer_lock);
 326         return result;
 327 }
 328
 329 static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 330 {
 331         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 332         int result = 0;
 333
 334         spin_lock(&chip->reg_lock);
 335         switch (cmd) {
 336         case SNDRV_PCM_TRIGGER_START:
 337         case SNDRV_PCM_TRIGGER_RESUME:
 338                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 339                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 340                 break;
 341         case SNDRV_PCM_TRIGGER_STOP:
 342         case SNDRV_PCM_TRIGGER_SUSPEND:
 343                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 344                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 345                 break;
 346         default:
 347                 result = -EINVAL;
 348                 break;
 349         }
 350         spin_unlock(&chip->reg_lock);
 351         return result;
 352 }
 353
 354 static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
 355 {
 356         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 357         unsigned int result;
 358
 359         spin_lock(&chip->reg_lock);
 360         result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 361         spin_unlock(&chip->reg_lock);
 362         return bytes_to_frames( substream->runtime, result );
 363 }
 364
 365 static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
 366 {
 367         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 368         unsigned result;
 369
 370         spin_lock(&chip->reg_lock);
 371         result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 372         spin_unlock(&chip->reg_lock);
 373         return bytes_to_frames( substream->runtime, result );
 374 }
 375
 376 /* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
 377  * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
 378  * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
 379  * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
 380  * register (alt_port + 0x0e). Probably something could be optimized here to
 381  * query/write one register only...
 382  * And even if both registers need to be queried, then there's still the
 383  * question of whether it's actually correct to ACK PCI IRQ before reading
 384  * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
 385  * SB IRQ status.
 386  * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
 387  * */
 388 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
 389 {
 390         struct snd_sb *chip = dev_id;
 391         unsigned gcr_status;
 392         unsigned sb_status;
 393
 394         /* find out which bit of the ALS4000 produced the interrupt */
 395         gcr_status = inb(chip->alt_port + 0xe);
 396
 397         if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 398                 snd_pcm_period_elapsed(chip->playback_substream);
 399         if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 400                 snd_pcm_period_elapsed(chip->capture_substream);
 401         if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 402                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 403         /* release the gcr */
 404         outb(gcr_status, chip->alt_port + 0xe);
 405
 406         spin_lock(&chip->mixer_lock);
 407         sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 408         spin_unlock(&chip->mixer_lock);
 409
 410         if (sb_status & SB_IRQTYPE_8BIT)
 411                 snd_sb_ack_8bit(chip);
 412         if (sb_status & SB_IRQTYPE_16BIT)
 413                 snd_sb_ack_16bit(chip);
 414         if (sb_status & SB_IRQTYPE_MPUIN)
 415                 inb(chip->mpu_port);
 416         if (sb_status & 0x20)
 417                 inb(SBP(chip, RESET));
 418         return IRQ_HANDLED;
 419 }
 420
 421 /*****************************************************************/
 422
 423 static struct snd_pcm_hardware snd_als4000_playback =
 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 static struct snd_pcm_hardware snd_als4000_capture =
 443 {
 444         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 445                                  SNDRV_PCM_INFO_MMAP_VALID),
 446         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 447                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 448         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 449         .rate_min =             4000,
 450         .rate_max =             48000,
 451         .channels_min =         1,
 452         .channels_max =         2,
 453         .buffer_bytes_max =     65536,
 454         .period_bytes_min =     64,
 455         .period_bytes_max =     65536,
 456         .periods_min =          1,
 457         .periods_max =          1024,
 458         .fifo_size =            0
 459 };
 460
 461 /*****************************************************************/
 462
 463 static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
 464 {
 465         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 466         struct snd_pcm_runtime *runtime = substream->runtime;
 467
 468         chip->playback_substream = substream;
 469         runtime->hw = snd_als4000_playback;
 470         return 0;
 471 }
 472
 473 static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
 474 {
 475         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 476
 477         chip->playback_substream = NULL;
 478         snd_pcm_lib_free_pages(substream);
 479         return 0;
 480 }
 481
 482 static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
 483 {
 484         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 485         struct snd_pcm_runtime *runtime = substream->runtime;
 486
 487         chip->capture_substream = substream;
 488         runtime->hw = snd_als4000_capture;
 489         return 0;
 490 }
 491
 492 static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
 493 {
 494         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 495
 496         chip->capture_substream = NULL;
 497         snd_pcm_lib_free_pages(substream);
 498         return 0;
 499 }
 500
 501 /******************************************************************/
 502
 503 static struct snd_pcm_ops snd_als4000_playback_ops = {
 504         .open =         snd_als4000_playback_open,
 505         .close =        snd_als4000_playback_close,
 506         .ioctl =        snd_pcm_lib_ioctl,
 507         .hw_params =    snd_als4000_hw_params,
 508         .hw_free =      snd_als4000_hw_free,
 509         .prepare =      snd_als4000_playback_prepare,
 510         .trigger =      snd_als4000_playback_trigger,
 511         .pointer =      snd_als4000_playback_pointer
 512 };
 513
 514 static struct snd_pcm_ops snd_als4000_capture_ops = {
 515         .open =         snd_als4000_capture_open,
 516         .close =        snd_als4000_capture_close,
 517         .ioctl =        snd_pcm_lib_ioctl,
 518         .hw_params =    snd_als4000_hw_params,
 519         .hw_free =      snd_als4000_hw_free,
 520         .prepare =      snd_als4000_capture_prepare,
 521         .trigger =      snd_als4000_capture_trigger,
 522         .pointer =      snd_als4000_capture_pointer
 523 };
 524
 525 static int __devinit snd_als4000_pcm(struct snd_sb *chip, int device)
 526 {
 527         struct snd_pcm *pcm;
 528         int err;
 529
 530         if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 531                 return err;
 532         pcm->private_data = chip;
 533         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 534         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 535         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 536
 537         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 538                                               64*1024, 64*1024);
 539
 540         chip->pcm = pcm;
 541
 542         return 0;
 543 }
 544
 545 /******************************************************************/
 546
 547 static void snd_als4000_set_addr(unsigned long gcr,
 548                                         unsigned int sb,
 549                                         unsigned int mpu,
 550                                         unsigned int opl,
 551                                         unsigned int game)
 552 {
 553         u32 confA = 0;
 554         u32 confB = 0;
 555
 556         if (mpu > 0)
 557                 confB |= (mpu | 1) << 16;
 558         if (sb > 0)
 559                 confB |= (sb | 1);
 560         if (game > 0)
 561                 confA |= (game | 1) << 16;
 562         if (opl > 0)
 563                 confA |= (opl | 1);
 564         snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 565         snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 566 }
 567
 568 static void snd_als4000_configure(struct snd_sb *chip)
 569 {
 570         unsigned tmp;
 571         int i;
 572
 573         /* do some more configuration */
 574         spin_lock_irq(&chip->mixer_lock);
 575         tmp = snd_sbmixer_read(chip, 0xc0);
 576         snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 577         /* always select DMA channel 0, since we do not actually use DMA */
 578         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 579         snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 580         spin_unlock_irq(&chip->mixer_lock);
 581
 582         spin_lock_irq(&chip->reg_lock);
 583         /* magic number. Enables interrupts(?) */
 584         snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 585         for(i = 0x91; i <= 0x96; ++i)
 586                 snd_als4000_gcr_write(chip, i, 0);
 587
 588         snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 589         spin_unlock_irq(&chip->reg_lock);
 590 }
 591
 592 #ifdef SUPPORT_JOYSTICK
 593 static int __devinit snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
 594 {
 595         struct gameport *gp;
 596         struct resource *r;
 597         int io_port;
 598
 599         if (joystick_port[dev] == 0)
 600                 return -ENODEV;
 601
 602         if (joystick_port[dev] == 1) { /* auto-detect */
 603                 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
 604                         r = request_region(io_port, 8, "ALS4000 gameport");
 605                         if (r)
 606                                 break;
 607                 }
 608         } else {
 609                 io_port = joystick_port[dev];
 610                 r = request_region(io_port, 8, "ALS4000 gameport");
 611         }
 612
 613         if (!r) {
 614                 printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
 615                 return -EBUSY;
 616         }
 617
 618         acard->gameport = gp = gameport_allocate_port();
 619         if (!gp) {
 620                 printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
 621                 release_and_free_resource(r);
 622                 return -ENOMEM;
 623         }
 624
 625         gameport_set_name(gp, "ALS4000 Gameport");
 626         gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
 627         gameport_set_dev_parent(gp, &acard->pci->dev);
 628         gp->io = io_port;
 629         gameport_set_port_data(gp, r);
 630
 631         /* Enable legacy joystick port */
 632         snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
 633
 634         gameport_register_port(acard->gameport);
 635
 636         return 0;
 637 }
 638
 639 static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
 640 {
 641         if (acard->gameport) {
 642                 struct resource *r = gameport_get_port_data(acard->gameport);
 643
 644                 gameport_unregister_port(acard->gameport);
 645                 acard->gameport = NULL;
 646
 647                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
 648                 release_and_free_resource(r);
 649         }
 650 }
 651 #else
 652 static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
 653 static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
 654 #endif
 655
 656 static void snd_card_als4000_free( struct snd_card *card )
 657 {
 658         struct snd_card_als4000 * acard = (struct snd_card_als4000 *)card->private_data;
 659
 660         /* make sure that interrupts are disabled */
 661         snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 662         /* free resources */
 663         snd_als4000_free_gameport(acard);
 664         pci_release_regions(acard->pci);
 665         pci_disable_device(acard->pci);
 666 }
 667
 668 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 669                                           const struct pci_device_id *pci_id)
 670 {
 671         static int dev;
 672         struct snd_card *card;
 673         struct snd_card_als4000 *acard;
 674         unsigned long gcr;
 675         struct snd_sb *chip;
 676         struct snd_opl3 *opl3;
 677         unsigned short word;
 678         int err;
 679
 680         if (dev >= SNDRV_CARDS)
 681                 return -ENODEV;
 682         if (!enable[dev]) {
 683                 dev++;
 684                 return -ENOENT;
 685         }
 686
 687         /* enable PCI device */
 688         if ((err = pci_enable_device(pci)) < 0) {
 689                 return err;
 690         }
 691         /* check, if we can restrict PCI DMA transfers to 24 bits */
 692         if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
 693             pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
 694                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
 695                 pci_disable_device(pci);
 696                 return -ENXIO;
 697         }
 698
 699         if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 700                 pci_disable_device(pci);
 701                 return err;
 702         }
 703         gcr = pci_resource_start(pci, 0);
 704
 705         pci_read_config_word(pci, PCI_COMMAND, &word);
 706         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 707         pci_set_master(pci);
 708
 709         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 710                             sizeof( struct snd_card_als4000 ) );
 711         if (card == NULL) {
 712                 pci_release_regions(pci);
 713                 pci_disable_device(pci);
 714                 return -ENOMEM;
 715         }
 716
 717         acard = (struct snd_card_als4000 *)card->private_data;
 718         acard->pci = pci;
 719         acard->gcr = gcr;
 720         card->private_free = snd_card_als4000_free;
 721
 722         /* disable all legacy ISA stuff */
 723         snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0);
 724
 725         if ((err = snd_sbdsp_create(card,
 726                                     gcr + 0x10,
 727                                     pci->irq,
 728                                     snd_als4000_interrupt,
 729                                     -1,
 730                                     -1,
 731                                     SB_HW_ALS4000,
 732                                     &chip)) < 0) {
 733                 goto out_err;
 734         }
 735         acard->chip = chip;
 736
 737         chip->pci = pci;
 738         chip->alt_port = gcr;
 739         snd_card_set_dev(card, &pci->dev);
 740
 741         snd_als4000_configure(chip);
 742
 743         strcpy(card->driver, "ALS4000");
 744         strcpy(card->shortname, "Avance Logic ALS4000");
 745         sprintf(card->longname, "%s at 0x%lx, irq %i",
 746                 card->shortname, chip->alt_port, chip->irq);
 747
 748         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 749                                         gcr+0x30, MPU401_INFO_INTEGRATED,
 750                                         pci->irq, 0, &chip->rmidi)) < 0) {
 751                 printk(KERN_ERR "als4000: no MPU-401 device at 0x%lx?\n", gcr+0x30);
 752                 goto out_err;
 753         }
 754
 755         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 756                 goto out_err;
 757         }
 758         if ((err = snd_sbmixer_new(chip)) < 0) {
 759                 goto out_err;
 760         }
 761
 762         if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 763                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 764                 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx?\n",
 765                            gcr+0x10, gcr+0x12 );
 766         } else {
 767                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 768                         goto out_err;
 769                 }
 770         }
 771
 772         snd_als4000_create_gameport(acard, dev);
 773
 774         if ((err = snd_card_register(card)) < 0) {
 775                 goto out_err;
 776         }
 777         pci_set_drvdata(pci, card);
 778         dev++;
 779         err = 0;
 780         goto out;
 781
 782 out_err:
 783         snd_card_free(card);
 784
 785 out:
 786         return err;
 787 }
 788
 789 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 790 {
 791         snd_card_free(pci_get_drvdata(pci));
 792         pci_set_drvdata(pci, NULL);
 793 }
 794
 795 #ifdef CONFIG_PM
 796 static int snd_als4000_suspend(struct pci_dev *pci, pm_message_t state)
 797 {
 798         struct snd_card *card = pci_get_drvdata(pci);
 799         struct snd_card_als4000 *acard = card->private_data;
 800         struct snd_sb *chip = acard->chip;
 801
 802         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 803
 804         snd_pcm_suspend_all(chip->pcm);
 805         snd_sbmixer_suspend(chip);
 806
 807         pci_disable_device(pci);
 808         pci_save_state(pci);
 809         pci_set_power_state(pci, pci_choose_state(pci, state));
 810         return 0;
 811 }
 812
 813 static int snd_als4000_resume(struct pci_dev *pci)
 814 {
 815         struct snd_card *card = pci_get_drvdata(pci);
 816         struct snd_card_als4000 *acard = card->private_data;
 817         struct snd_sb *chip = acard->chip;
 818
 819         pci_set_power_state(pci, PCI_D0);
 820         pci_restore_state(pci);
 821         if (pci_enable_device(pci) < 0) {
 822                 printk(KERN_ERR "als4000: pci_enable_device failed, "
 823                        "disabling device\n");
 824                 snd_card_disconnect(card);
 825                 return -EIO;
 826         }
 827         pci_set_master(pci);
 828
 829         snd_als4000_configure(chip);
 830         snd_sbdsp_reset(chip);
 831         snd_sbmixer_resume(chip);
 832
 833 #ifdef SUPPORT_JOYSTICK
 834         if (acard->gameport)
 835                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
 836 #endif
 837
 838         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 839         return 0;
 840 }
 841 #endif
 842
 843
 844 static struct pci_driver driver = {
 845         .name = "ALS4000",
 846         .id_table = snd_als4000_ids,
 847         .probe = snd_card_als4000_probe,
 848         .remove = __devexit_p(snd_card_als4000_remove),
 849 #ifdef CONFIG_PM
 850         .suspend = snd_als4000_suspend,
 851         .resume = snd_als4000_resume,
 852 #endif
 853 };
 854
 855 static int __init alsa_card_als4000_init(void)
 856 {
 857         return pci_register_driver(&driver);
 858 }
 859
 860 static void __exit alsa_card_als4000_exit(void)
 861 {
 862         pci_unregister_driver(&driver);
 863 }
 864
 865 module_init(alsa_card_als4000_init)
 866 module_exit(alsa_card_als4000_exit)