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