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  *
  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 <sound/core.h>
  74 #include <sound/pcm.h>
  75 #include <sound/rawmidi.h>
  76 #include <sound/mpu401.h>
  77 #include <sound/opl3.h>
  78 #include <sound/sb.h>
  79 #include <sound/initval.h>
  80
  81 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>");
  82 MODULE_DESCRIPTION("Avance Logic ALS4000");
  83 MODULE_LICENSE("GPL");
  84 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
  85
  86 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  87 #define SUPPORT_JOYSTICK 1
  88 #endif
  89
  90 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  91 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  92 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  93 #ifdef SUPPORT_JOYSTICK
  94 static int joystick_port[SNDRV_CARDS];
  95 #endif
  96
  97 module_param_array(index, int, NULL, 0444);
  98 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
  99 module_param_array(id, charp, NULL, 0444);
 100 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
 101 module_param_array(enable, bool, NULL, 0444);
 102 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
 103 #ifdef SUPPORT_JOYSTICK
 104 module_param_array(joystick_port, int, NULL, 0444);
 105 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 106 #endif
 107
 108 struct snd_card_als4000 {
 109         /* most frequent access first */
 110         unsigned long gcr;
 111         struct pci_dev *pci;
 112         struct snd_sb *chip;
 113 #ifdef SUPPORT_JOYSTICK
 114         struct gameport *gameport;
 115 #endif
 116 };
 117
 118 static struct pci_device_id snd_als4000_ids[] = {
 119         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 120         { 0, }
 121 };
 122
 123 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 124
 125 static inline void snd_als4000_gcr_write_addr(unsigned long port, u32 reg, u32 val)
 126 {
 127         outb(reg, port+0x0c);
 128         outl(val, port+0x08);
 129 }
 130
 131 static inline void snd_als4000_gcr_write(struct snd_sb *sb, u32 reg, u32 val)
 132 {
 133         snd_als4000_gcr_write_addr(sb->alt_port, reg, val);
 134 }
 135
 136 static inline u32 snd_als4000_gcr_read_addr(unsigned long port, u32 reg)
 137 {
 138         outb(reg, port+0x0c);
 139         return inl(port+0x08);
 140 }
 141
 142 static inline u32 snd_als4000_gcr_read(struct snd_sb *sb, u32 reg)
 143 {
 144         return snd_als4000_gcr_read_addr(sb->alt_port, reg);
 145 }
 146
 147 static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate)
 148 {
 149         if (!(chip->mode & SB_RATE_LOCK)) {
 150                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 151                 snd_sbdsp_command(chip, rate>>8);
 152                 snd_sbdsp_command(chip, rate);
 153         }
 154 }
 155
 156 static inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
 157                                                dma_addr_t addr, unsigned size)
 158 {
 159         snd_als4000_gcr_write(chip, 0xa2, addr);
 160         snd_als4000_gcr_write(chip, 0xa3, (size-1));
 161 }
 162
 163 static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
 164                                                 dma_addr_t addr, unsigned size)
 165 {
 166         snd_als4000_gcr_write(chip, 0x91, addr);
 167         snd_als4000_gcr_write(chip, 0x92, (size-1)|0x180000);
 168 }
 169
 170 #define ALS4000_FORMAT_SIGNED   (1<<0)
 171 #define ALS4000_FORMAT_16BIT    (1<<1)
 172 #define ALS4000_FORMAT_STEREO   (1<<2)
 173
 174 static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
 175 {
 176         int result;
 177
 178         result = 0;
 179         if (snd_pcm_format_signed(runtime->format))
 180                 result |= ALS4000_FORMAT_SIGNED;
 181         if (snd_pcm_format_physical_width(runtime->format) == 16)
 182                 result |= ALS4000_FORMAT_16BIT;
 183         if (runtime->channels > 1)
 184                 result |= ALS4000_FORMAT_STEREO;
 185         return result;
 186 }
 187
 188 /* structure for setting up playback */
 189 static const struct {
 190         unsigned char dsp_cmd, dma_on, dma_off, format;
 191 } playback_cmd_vals[]={
 192 /* ALS4000_FORMAT_U8_MONO */
 193 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 194 /* ALS4000_FORMAT_S8_MONO */
 195 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 196 /* ALS4000_FORMAT_U16L_MONO */
 197 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 198 /* ALS4000_FORMAT_S16L_MONO */
 199 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 200 /* ALS4000_FORMAT_U8_STEREO */
 201 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 202 /* ALS4000_FORMAT_S8_STEREO */
 203 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 204 /* ALS4000_FORMAT_U16L_STEREO */
 205 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 206 /* ALS4000_FORMAT_S16L_STEREO */
 207 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 208 };
 209 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 210
 211 /* structure for setting up capture */
 212 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 213 static const unsigned char capture_cmd_vals[]=
 214 {
 215 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 216 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 217 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 218 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 219 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 220 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 221 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 222 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 223 };
 224 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 225
 226 static int snd_als4000_hw_params(struct snd_pcm_substream *substream,
 227                                  struct snd_pcm_hw_params *hw_params)
 228 {
 229         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 230 }
 231
 232 static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
 233 {
 234         snd_pcm_lib_free_pages(substream);
 235         return 0;
 236 }
 237
 238 static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
 239 {
 240         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 241         struct snd_pcm_runtime *runtime = substream->runtime;
 242         unsigned long size;
 243         unsigned count;
 244
 245         chip->capture_format = snd_als4000_get_format(runtime);
 246
 247         size = snd_pcm_lib_buffer_bytes(substream);
 248         count = snd_pcm_lib_period_bytes(substream);
 249
 250         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 251                 count >>=1;
 252         count--;
 253
 254         spin_lock_irq(&chip->reg_lock);
 255         snd_als4000_set_rate(chip, runtime->rate);
 256         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 257         spin_unlock_irq(&chip->reg_lock);
 258         spin_lock_irq(&chip->mixer_lock);
 259         snd_sbmixer_write(chip, 0xdc, count);
 260         snd_sbmixer_write(chip, 0xdd, count>>8);
 261         spin_unlock_irq(&chip->mixer_lock);
 262         return 0;
 263 }
 264
 265 static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
 266 {
 267         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 268         struct snd_pcm_runtime *runtime = substream->runtime;
 269         unsigned long size;
 270         unsigned count;
 271
 272         chip->playback_format = snd_als4000_get_format(runtime);
 273
 274         size = snd_pcm_lib_buffer_bytes(substream);
 275         count = snd_pcm_lib_period_bytes(substream);
 276
 277         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 278                 count >>=1;
 279         count--;
 280
 281         /* FIXME: from second playback on, there's a lot more clicks and pops
 282          * involved here than on first playback. Fiddling with
 283          * tons of different settings didn't help (DMA, speaker on/off,
 284          * reordering, ...). Something seems to get enabled on playback
 285          * that I haven't found out how to disable again, which then causes
 286          * the switching pops to reach the speakers the next time here. */
 287         spin_lock_irq(&chip->reg_lock);
 288         snd_als4000_set_rate(chip, runtime->rate);
 289         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 290
 291         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 292         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 293         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 294         snd_sbdsp_command(chip, playback_cmd(chip).format);
 295         snd_sbdsp_command(chip, count);
 296         snd_sbdsp_command(chip, count>>8);
 297         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 298         spin_unlock_irq(&chip->reg_lock);
 299
 300         return 0;
 301 }
 302
 303 static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 304 {
 305         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 306         int result = 0;
 307
 308         spin_lock(&chip->mixer_lock);
 309         switch (cmd) {
 310         case SNDRV_PCM_TRIGGER_START:
 311         case SNDRV_PCM_TRIGGER_RESUME:
 312                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 313                 snd_sbmixer_write(chip, 0xde, capture_cmd(chip));
 314                 break;
 315         case SNDRV_PCM_TRIGGER_STOP:
 316         case SNDRV_PCM_TRIGGER_SUSPEND:
 317                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 318                 snd_sbmixer_write(chip, 0xde, 0);
 319                 break;
 320         default:
 321                 result = -EINVAL;
 322                 break;
 323         }
 324         spin_unlock(&chip->mixer_lock);
 325         return result;
 326 }
 327
 328 static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 329 {
 330         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 331         int result = 0;
 332
 333         spin_lock(&chip->reg_lock);
 334         switch (cmd) {
 335         case SNDRV_PCM_TRIGGER_START:
 336         case SNDRV_PCM_TRIGGER_RESUME:
 337                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 338                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 339                 break;
 340         case SNDRV_PCM_TRIGGER_STOP:
 341         case SNDRV_PCM_TRIGGER_SUSPEND:
 342                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 343                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 344                 break;
 345         default:
 346                 result = -EINVAL;
 347                 break;
 348         }
 349         spin_unlock(&chip->reg_lock);
 350         return result;
 351 }
 352
 353 static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
 354 {
 355         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 356         unsigned int result;
 357
 358         spin_lock(&chip->reg_lock);
 359         result = snd_als4000_gcr_read(chip, 0xa4) & 0xffff;
 360         spin_unlock(&chip->reg_lock);
 361         return bytes_to_frames( substream->runtime, result );
 362 }
 363
 364 static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
 365 {
 366         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 367         unsigned result;
 368
 369         spin_lock(&chip->reg_lock);
 370         result = snd_als4000_gcr_read(chip, 0xa0) & 0xffff;
 371         spin_unlock(&chip->reg_lock);
 372         return bytes_to_frames( substream->runtime, result );
 373 }
 374
 375 /* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
 376  * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
 377  * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
 378  * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
 379  * register (alt_port + 0x0e). Probably something could be optimized here to
 380  * query/write one register only...
 381  * And even if both registers need to be queried, then there's still the
 382  * question of whether it's actually correct to ACK PCI IRQ before reading
 383  * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
 384  * SB IRQ status.
 385  * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
 386  * */
 387 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 388 {
 389         struct snd_sb *chip = dev_id;
 390         unsigned gcr_status;
 391         unsigned sb_status;
 392
 393         /* find out which bit of the ALS4000 produced the interrupt */
 394         gcr_status = inb(chip->alt_port + 0xe);
 395
 396         if ((gcr_status & 0x80) && (chip->playback_substream)) /* playback */
 397                 snd_pcm_period_elapsed(chip->playback_substream);
 398         if ((gcr_status & 0x40) && (chip->capture_substream)) /* capturing */
 399                 snd_pcm_period_elapsed(chip->capture_substream);
 400         if ((gcr_status & 0x10) && (chip->rmidi)) /* MPU401 interrupt */
 401                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 402         /* release the gcr */
 403         outb(gcr_status, chip->alt_port + 0xe);
 404
 405         spin_lock(&chip->mixer_lock);
 406         sb_status = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 407         spin_unlock(&chip->mixer_lock);
 408
 409         if (sb_status & SB_IRQTYPE_8BIT)
 410                 snd_sb_ack_8bit(chip);
 411         if (sb_status & SB_IRQTYPE_16BIT)
 412                 snd_sb_ack_16bit(chip);
 413         if (sb_status & SB_IRQTYPE_MPUIN)
 414                 inb(chip->mpu_port);
 415         if (sb_status & 0x20)
 416                 inb(SBP(chip, RESET));
 417         return IRQ_HANDLED;
 418 }
 419
 420 /*****************************************************************/
 421
 422 static struct snd_pcm_hardware snd_als4000_playback =
 423 {
 424         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 425                                  SNDRV_PCM_INFO_MMAP_VALID),
 426         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 427                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 428         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 429         .rate_min =             4000,
 430         .rate_max =             48000,
 431         .channels_min =         1,
 432         .channels_max =         2,
 433         .buffer_bytes_max =     65536,
 434         .period_bytes_min =     64,
 435         .period_bytes_max =     65536,
 436         .periods_min =          1,
 437         .periods_max =          1024,
 438         .fifo_size =            0
 439 };
 440
 441 static struct snd_pcm_hardware snd_als4000_capture =
 442 {
 443         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 444                                  SNDRV_PCM_INFO_MMAP_VALID),
 445         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 446                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 447         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 448         .rate_min =             4000,
 449         .rate_max =             48000,
 450         .channels_min =         1,
 451         .channels_max =         2,
 452         .buffer_bytes_max =     65536,
 453         .period_bytes_min =     64,
 454         .period_bytes_max =     65536,
 455         .periods_min =          1,
 456         .periods_max =          1024,
 457         .fifo_size =            0
 458 };
 459
 460 /*****************************************************************/
 461
 462 static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
 463 {
 464         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 465         struct snd_pcm_runtime *runtime = substream->runtime;
 466
 467         chip->playback_substream = substream;
 468         runtime->hw = snd_als4000_playback;
 469         return 0;
 470 }
 471
 472 static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
 473 {
 474         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 475
 476         chip->playback_substream = NULL;
 477         snd_pcm_lib_free_pages(substream);
 478         return 0;
 479 }
 480
 481 static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
 482 {
 483         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 484         struct snd_pcm_runtime *runtime = substream->runtime;
 485
 486         chip->capture_substream = substream;
 487         runtime->hw = snd_als4000_capture;
 488         return 0;
 489 }
 490
 491 static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
 492 {
 493         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 494
 495         chip->capture_substream = NULL;
 496         snd_pcm_lib_free_pages(substream);
 497         return 0;
 498 }
 499
 500 /******************************************************************/
 501
 502 static struct snd_pcm_ops snd_als4000_playback_ops = {
 503         .open =         snd_als4000_playback_open,
 504         .close =        snd_als4000_playback_close,
 505         .ioctl =        snd_pcm_lib_ioctl,
 506         .hw_params =    snd_als4000_hw_params,
 507         .hw_free =      snd_als4000_hw_free,
 508         .prepare =      snd_als4000_playback_prepare,
 509         .trigger =      snd_als4000_playback_trigger,
 510         .pointer =      snd_als4000_playback_pointer
 511 };
 512
 513 static struct snd_pcm_ops snd_als4000_capture_ops = {
 514         .open =         snd_als4000_capture_open,
 515         .close =        snd_als4000_capture_close,
 516         .ioctl =        snd_pcm_lib_ioctl,
 517         .hw_params =    snd_als4000_hw_params,
 518         .hw_free =      snd_als4000_hw_free,
 519         .prepare =      snd_als4000_capture_prepare,
 520         .trigger =      snd_als4000_capture_trigger,
 521         .pointer =      snd_als4000_capture_pointer
 522 };
 523
 524 static int __devinit snd_als4000_pcm(struct snd_sb *chip, int device)
 525 {
 526         struct snd_pcm *pcm;
 527         int err;
 528
 529         if ((err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm)) < 0)
 530                 return err;
 531         pcm->private_data = chip;
 532         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 533         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 534         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 535
 536         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 537                                               64*1024, 64*1024);
 538
 539         chip->pcm = pcm;
 540
 541         return 0;
 542 }
 543
 544 /******************************************************************/
 545
 546 static void snd_als4000_set_addr(unsigned long gcr,
 547                                         unsigned int sb,
 548                                         unsigned int mpu,
 549                                         unsigned int opl,
 550                                         unsigned int game)
 551 {
 552         u32 confA = 0;
 553         u32 confB = 0;
 554
 555         if (mpu > 0)
 556                 confB |= (mpu | 1) << 16;
 557         if (sb > 0)
 558                 confB |= (sb | 1);
 559         if (game > 0)
 560                 confA |= (game | 1) << 16;
 561         if (opl > 0)
 562                 confA |= (opl | 1);
 563         snd_als4000_gcr_write_addr(gcr, 0xa8, confA);
 564         snd_als4000_gcr_write_addr(gcr, 0xa9, confB);
 565 }
 566
 567 static void snd_als4000_configure(struct snd_sb *chip)
 568 {
 569         unsigned tmp;
 570         int i;
 571
 572         /* do some more configuration */
 573         spin_lock_irq(&chip->mixer_lock);
 574         tmp = snd_sbmixer_read(chip, 0xc0);
 575         snd_sbmixer_write(chip, 0xc0, tmp|0x80);
 576         /* always select DMA channel 0, since we do not actually use DMA */
 577         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 578         snd_sbmixer_write(chip, 0xc0, tmp&0x7f);
 579         spin_unlock_irq(&chip->mixer_lock);
 580
 581         spin_lock_irq(&chip->reg_lock);
 582         /* magic number. Enables interrupts(?) */
 583         snd_als4000_gcr_write(chip, 0x8c, 0x28000);
 584         for(i = 0x91; i <= 0x96; ++i)
 585                 snd_als4000_gcr_write(chip, i, 0);
 586
 587         snd_als4000_gcr_write(chip, 0x99, snd_als4000_gcr_read(chip, 0x99));
 588         spin_unlock_irq(&chip->reg_lock);
 589 }
 590
 591 #ifdef SUPPORT_JOYSTICK
 592 static int __devinit snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
 593 {
 594         struct gameport *gp;
 595         struct resource *r;
 596         int io_port;
 597
 598         if (joystick_port[dev] == 0)
 599                 return -ENODEV;
 600
 601         if (joystick_port[dev] == 1) { /* auto-detect */
 602                 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
 603                         r = request_region(io_port, 8, "ALS4000 gameport");
 604                         if (r)
 605                                 break;
 606                 }
 607         } else {
 608                 io_port = joystick_port[dev];
 609                 r = request_region(io_port, 8, "ALS4000 gameport");
 610         }
 611
 612         if (!r) {
 613                 printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
 614                 return -EBUSY;
 615         }
 616
 617         acard->gameport = gp = gameport_allocate_port();
 618         if (!gp) {
 619                 printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
 620                 release_and_free_resource(r);
 621                 return -ENOMEM;
 622         }
 623
 624         gameport_set_name(gp, "ALS4000 Gameport");
 625         gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
 626         gameport_set_dev_parent(gp, &acard->pci->dev);
 627         gp->io = io_port;
 628         gameport_set_port_data(gp, r);
 629
 630         /* Enable legacy joystick port */
 631         snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
 632
 633         gameport_register_port(acard->gameport);
 634
 635         return 0;
 636 }
 637
 638 static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
 639 {
 640         if (acard->gameport) {
 641                 struct resource *r = gameport_get_port_data(acard->gameport);
 642
 643                 gameport_unregister_port(acard->gameport);
 644                 acard->gameport = NULL;
 645
 646                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0); /* disable joystick */
 647                 release_and_free_resource(r);
 648         }
 649 }
 650 #else
 651 static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
 652 static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
 653 #endif
 654
 655 static void snd_card_als4000_free( struct snd_card *card )
 656 {
 657         struct snd_card_als4000 * acard = (struct snd_card_als4000 *)card->private_data;
 658
 659         /* make sure that interrupts are disabled */
 660         snd_als4000_gcr_write_addr( acard->gcr, 0x8c, 0);
 661         /* free resources */
 662         snd_als4000_free_gameport(acard);
 663         pci_release_regions(acard->pci);
 664         pci_disable_device(acard->pci);
 665 }
 666
 667 static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 668                                           const struct pci_device_id *pci_id)
 669 {
 670         static int dev;
 671         struct snd_card *card;
 672         struct snd_card_als4000 *acard;
 673         unsigned long gcr;
 674         struct snd_sb *chip;
 675         struct snd_opl3 *opl3;
 676         unsigned short word;
 677         int err;
 678
 679         if (dev >= SNDRV_CARDS)
 680                 return -ENODEV;
 681         if (!enable[dev]) {
 682                 dev++;
 683                 return -ENOENT;
 684         }
 685
 686         /* enable PCI device */
 687         if ((err = pci_enable_device(pci)) < 0) {
 688                 return err;
 689         }
 690         /* check, if we can restrict PCI DMA transfers to 24 bits */
 691         if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
 692             pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
 693                 snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
 694                 pci_disable_device(pci);
 695                 return -ENXIO;
 696         }
 697
 698         if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 699                 pci_disable_device(pci);
 700                 return err;
 701         }
 702         gcr = pci_resource_start(pci, 0);
 703
 704         pci_read_config_word(pci, PCI_COMMAND, &word);
 705         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 706         pci_set_master(pci);
 707
 708         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
 709                             sizeof( struct snd_card_als4000 ) );
 710         if (card == NULL) {
 711                 pci_release_regions(pci);
 712                 pci_disable_device(pci);
 713                 return -ENOMEM;
 714         }
 715
 716         acard = (struct snd_card_als4000 *)card->private_data;
 717         acard->pci = pci;
 718         acard->gcr = gcr;
 719         card->private_free = snd_card_als4000_free;
 720
 721         /* disable all legacy ISA stuff */
 722         snd_als4000_set_addr(acard->gcr, 0, 0, 0, 0);
 723
 724         if ((err = snd_sbdsp_create(card,
 725                                     gcr + 0x10,
 726                                     pci->irq,
 727                                     snd_als4000_interrupt,
 728                                     -1,
 729                                     -1,
 730                                     SB_HW_ALS4000,
 731                                     &chip)) < 0) {
 732                 goto out_err;
 733         }
 734         acard->chip = chip;
 735
 736         chip->pci = pci;
 737         chip->alt_port = gcr;
 738         snd_card_set_dev(card, &pci->dev);
 739
 740         snd_als4000_configure(chip);
 741
 742         strcpy(card->driver, "ALS4000");
 743         strcpy(card->shortname, "Avance Logic ALS4000");
 744         sprintf(card->longname, "%s at 0x%lx, irq %i",
 745                 card->shortname, chip->alt_port, chip->irq);
 746
 747         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 748                                         gcr+0x30, 1, pci->irq, 0,
 749                                         &chip->rmidi)) < 0) {
 750                 printk(KERN_ERR "als4000: no MPU-401 device at 0x%lx?\n", gcr+0x30);
 751                 goto out_err;
 752         }
 753
 754         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 755                 goto out_err;
 756         }
 757         if ((err = snd_sbmixer_new(chip)) < 0) {
 758                 goto out_err;
 759         }
 760
 761         if (snd_opl3_create(card, gcr+0x10, gcr+0x12,
 762                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 763                 printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx?\n",
 764                            gcr+0x10, gcr+0x12 );
 765         } else {
 766                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 767                         goto out_err;
 768                 }
 769         }
 770
 771         snd_als4000_create_gameport(acard, dev);
 772
 773         if ((err = snd_card_register(card)) < 0) {
 774                 goto out_err;
 775         }
 776         pci_set_drvdata(pci, card);
 777         dev++;
 778         err = 0;
 779         goto out;
 780
 781 out_err:
 782         snd_card_free(card);
 783
 784 out:
 785         return err;
 786 }
 787
 788 static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 789 {
 790         snd_card_free(pci_get_drvdata(pci));
 791         pci_set_drvdata(pci, NULL);
 792 }
 793
 794 #ifdef CONFIG_PM
 795 static int snd_als4000_suspend(struct pci_dev *pci, pm_message_t state)
 796 {
 797         struct snd_card *card = pci_get_drvdata(pci);
 798         struct snd_card_als4000 *acard = card->private_data;
 799         struct snd_sb *chip = acard->chip;
 800
 801         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 802
 803         snd_pcm_suspend_all(chip->pcm);
 804         snd_sbmixer_suspend(chip);
 805
 806         pci_set_power_state(pci, PCI_D3hot);
 807         pci_disable_device(pci);
 808         pci_save_state(pci);
 809         return 0;
 810 }
 811
 812 static int snd_als4000_resume(struct pci_dev *pci)
 813 {
 814         struct snd_card *card = pci_get_drvdata(pci);
 815         struct snd_card_als4000 *acard = card->private_data;
 816         struct snd_sb *chip = acard->chip;
 817
 818         pci_restore_state(pci);
 819         pci_enable_device(pci);
 820         pci_set_power_state(pci, PCI_D0);
 821         pci_set_master(pci);
 822
 823         snd_als4000_configure(chip);
 824         snd_sbdsp_reset(chip);
 825         snd_sbmixer_resume(chip);
 826
 827 #ifdef SUPPORT_JOYSTICK
 828         if (acard->gameport)
 829                 snd_als4000_set_addr(acard->gcr, 0, 0, 0, 1);
 830 #endif
 831
 832         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 833         return 0;
 834 }
 835 #endif
 836
 837
 838 static struct pci_driver driver = {
 839         .name = "ALS4000",
 840         .id_table = snd_als4000_ids,
 841         .probe = snd_card_als4000_probe,
 842         .remove = __devexit_p(snd_card_als4000_remove),
 843 #ifdef CONFIG_PM
 844         .suspend = snd_als4000_suspend,
 845         .resume = snd_als4000_resume,
 846 #endif
 847 };
 848
 849 static int __init alsa_card_als4000_init(void)
 850 {
 851         return pci_register_driver(&driver);
 852 }
 853
 854 static void __exit alsa_card_als4000_exit(void)
 855 {
 856         pci_unregister_driver(&driver);
 857 }
 858
 859 module_init(alsa_card_als4000_init)
 860 module_exit(alsa_card_als4000_exit)