sound/pci/als300.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
   4  *  Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
   5  *
   6  *  TODO
   7  *  4 channel playback for ALS300+
   8  *  gameport
   9  *  mpu401
  10  *  opl3
  11  *
  12  *  NOTES
  13  *  The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
  14  *  the position in the current period, NOT the whole buffer. It is important
  15  *  to know which period we are in so we can calculate the correct pointer.
  16  *  This is why we always use 2 periods. We can then use a flip-flop variable
  17  *  to keep track of what period we are in.
  18  */
  19
  20 #include <linux/delay.h>
  21 #include <linux/init.h>
  22 #include <linux/module.h>
  23 #include <linux/pci.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/slab.h>
  27 #include <linux/io.h>
  28
  29 #include <sound/core.h>
  30 #include <sound/control.h>
  31 #include <sound/initval.h>
  32 #include <sound/pcm.h>
  33 #include <sound/pcm_params.h>
  34 #include <sound/ac97_codec.h>
  35 #include <sound/opl3.h>
  36
  37 /* snd_als300_set_irq_flag */
  38 #define IRQ_DISABLE             0
  39 #define IRQ_ENABLE              1
  40
  41 /* I/O port layout */
  42 #define AC97_ACCESS             0x00
  43 #define AC97_READ               0x04
  44 #define AC97_STATUS             0x06
  45 #define   AC97_DATA_AVAIL               (1<<6)
  46 #define   AC97_BUSY                     (1<<7)
  47 #define ALS300_IRQ_STATUS       0x07            /* ALS300 Only */
  48 #define   IRQ_PLAYBACK                  (1<<3)
  49 #define   IRQ_CAPTURE                   (1<<2)
  50 #define GCR_DATA                0x08
  51 #define GCR_INDEX               0x0C
  52 #define ALS300P_DRAM_IRQ_STATUS 0x0D            /* ALS300+ Only */
  53 #define MPU_IRQ_STATUS          0x0E            /* ALS300 Rev. E+, ALS300+ */
  54 #define ALS300P_IRQ_STATUS      0x0F            /* ALS300+ Only */
  55
  56 /* General Control Registers */
  57 #define PLAYBACK_START          0x80
  58 #define PLAYBACK_END            0x81
  59 #define PLAYBACK_CONTROL        0x82
  60 #define   TRANSFER_START                (1<<16)
  61 #define   FIFO_PAUSE                    (1<<17)
  62 #define RECORD_START            0x83
  63 #define RECORD_END              0x84
  64 #define RECORD_CONTROL          0x85
  65 #define DRAM_WRITE_CONTROL      0x8B
  66 #define   WRITE_TRANS_START             (1<<16)
  67 #define   DRAM_MODE_2                   (1<<17)
  68 #define MISC_CONTROL            0x8C
  69 #define   IRQ_SET_BIT                   (1<<15)
  70 #define   VMUTE_NORMAL                  (1<<20)
  71 #define   MMUTE_NORMAL                  (1<<21)
  72 #define MUS_VOC_VOL             0x8E
  73 #define PLAYBACK_BLOCK_COUNTER  0x9A
  74 #define RECORD_BLOCK_COUNTER    0x9B
  75
  76 #define DEBUG_PLAY_REC  0
  77
  78 #if DEBUG_PLAY_REC
  79 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
  80 #else
  81 #define snd_als300_dbgplay(format, args...)
  82 #endif
  83
  84 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
  85
  86 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
  87 MODULE_DESCRIPTION("Avance Logic ALS300");
  88 MODULE_LICENSE("GPL");
  89
  90 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  91 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  92 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  93
  94 module_param_array(index, int, NULL, 0444);
  95 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
  96 module_param_array(id, charp, NULL, 0444);
  97 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
  98 module_param_array(enable, bool, NULL, 0444);
  99 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
 100
 101 struct snd_als300 {
 102         unsigned long port;
 103         spinlock_t reg_lock;
 104         struct snd_card *card;
 105         struct pci_dev *pci;
 106
 107         struct snd_pcm *pcm;
 108         struct snd_pcm_substream *playback_substream;
 109         struct snd_pcm_substream *capture_substream;
 110
 111         struct snd_ac97 *ac97;
 112         struct snd_opl3 *opl3;
 113
 114         struct resource *res_port;
 115
 116         int irq;
 117
 118         int chip_type; /* ALS300 or ALS300+ */
 119
 120         char revision;
 121 };
 122
 123 struct snd_als300_substream_data {
 124         int period_flipflop;
 125         int control_register;
 126         int block_counter_register;
 127 };
 128
 129 static const struct pci_device_id snd_als300_ids[] = {
 130         { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
 131         { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
 132         { 0, }
 133 };
 134
 135 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
 136
 137 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
 138 {
 139         outb(reg, port+GCR_INDEX);
 140         return inl(port+GCR_DATA);
 141 }
 142
 143 static inline void snd_als300_gcr_write(unsigned long port,
 144                                                 unsigned short reg, u32 val)
 145 {
 146         outb(reg, port+GCR_INDEX);
 147         outl(val, port+GCR_DATA);
 148 }
 149
 150 /* Enable/Disable Interrupts */
 151 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
 152 {
 153         u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 154
 155         /* boolean XOR check, since old vs. new hardware have
 156            directly reversed bit setting for ENABLE and DISABLE.
 157            ALS300+ acts like newer versions of ALS300 */
 158         if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
 159                                                 (cmd == IRQ_ENABLE)) == 0)
 160                 tmp |= IRQ_SET_BIT;
 161         else
 162                 tmp &= ~IRQ_SET_BIT;
 163         snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
 164 }
 165
 166 static int snd_als300_free(struct snd_als300 *chip)
 167 {
 168         snd_als300_set_irq_flag(chip, IRQ_DISABLE);
 169         if (chip->irq >= 0)
 170                 free_irq(chip->irq, chip);
 171         pci_release_regions(chip->pci);
 172         pci_disable_device(chip->pci);
 173         kfree(chip);
 174         return 0;
 175 }
 176
 177 static int snd_als300_dev_free(struct snd_device *device)
 178 {
 179         struct snd_als300 *chip = device->device_data;
 180         return snd_als300_free(chip);
 181 }
 182
 183 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
 184 {
 185         u8 status;
 186         struct snd_als300 *chip = dev_id;
 187         struct snd_als300_substream_data *data;
 188
 189         status = inb(chip->port+ALS300_IRQ_STATUS);
 190         if (!status) /* shared IRQ, for different device?? Exit ASAP! */
 191                 return IRQ_NONE;
 192
 193         /* ACK everything ASAP */
 194         outb(status, chip->port+ALS300_IRQ_STATUS);
 195         if (status & IRQ_PLAYBACK) {
 196                 if (chip->pcm && chip->playback_substream) {
 197                         data = chip->playback_substream->runtime->private_data;
 198                         data->period_flipflop ^= 1;
 199                         snd_pcm_period_elapsed(chip->playback_substream);
 200                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 201                 }
 202         }
 203         if (status & IRQ_CAPTURE) {
 204                 if (chip->pcm && chip->capture_substream) {
 205                         data = chip->capture_substream->runtime->private_data;
 206                         data->period_flipflop ^= 1;
 207                         snd_pcm_period_elapsed(chip->capture_substream);
 208                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 209                 }
 210         }
 211         return IRQ_HANDLED;
 212 }
 213
 214 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
 215 {
 216         u8 general, mpu, dram;
 217         struct snd_als300 *chip = dev_id;
 218         struct snd_als300_substream_data *data;
 219
 220         general = inb(chip->port+ALS300P_IRQ_STATUS);
 221         mpu = inb(chip->port+MPU_IRQ_STATUS);
 222         dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
 223
 224         /* shared IRQ, for different device?? Exit ASAP! */
 225         if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
 226                 return IRQ_NONE;
 227
 228         if (general & IRQ_PLAYBACK) {
 229                 if (chip->pcm && chip->playback_substream) {
 230                         outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
 231                         data = chip->playback_substream->runtime->private_data;
 232                         data->period_flipflop ^= 1;
 233                         snd_pcm_period_elapsed(chip->playback_substream);
 234                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 235                 }
 236         }
 237         if (general & IRQ_CAPTURE) {
 238                 if (chip->pcm && chip->capture_substream) {
 239                         outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
 240                         data = chip->capture_substream->runtime->private_data;
 241                         data->period_flipflop ^= 1;
 242                         snd_pcm_period_elapsed(chip->capture_substream);
 243                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 244                 }
 245         }
 246         /* FIXME: Ack other interrupt types. Not important right now as
 247          * those other devices aren't enabled. */
 248         return IRQ_HANDLED;
 249 }
 250
 251 static void snd_als300_remove(struct pci_dev *pci)
 252 {
 253         snd_card_free(pci_get_drvdata(pci));
 254 }
 255
 256 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
 257                                                         unsigned short reg)
 258 {
 259         int i;
 260         struct snd_als300 *chip = ac97->private_data;
 261
 262         for (i = 0; i < 1000; i++) {
 263                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 264                         break;
 265                 udelay(10);
 266         }
 267         outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
 268
 269         for (i = 0; i < 1000; i++) {
 270                 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
 271                         break;
 272                 udelay(10);
 273         }
 274         return inw(chip->port+AC97_READ);
 275 }
 276
 277 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
 278                                 unsigned short reg, unsigned short val)
 279 {
 280         int i;
 281         struct snd_als300 *chip = ac97->private_data;
 282
 283         for (i = 0; i < 1000; i++) {
 284                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 285                         break;
 286                 udelay(10);
 287         }
 288         outl((reg << 24) | val, chip->port+AC97_ACCESS);
 289 }
 290
 291 static int snd_als300_ac97(struct snd_als300 *chip)
 292 {
 293         struct snd_ac97_bus *bus;
 294         struct snd_ac97_template ac97;
 295         int err;
 296         static const struct snd_ac97_bus_ops ops = {
 297                 .write = snd_als300_ac97_write,
 298                 .read = snd_als300_ac97_read,
 299         };
 300
 301         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
 302                 return err;
 303
 304         memset(&ac97, 0, sizeof(ac97));
 305         ac97.private_data = chip;
 306
 307         return snd_ac97_mixer(bus, &ac97, &chip->ac97);
 308 }
 309
 310 /* hardware definition
 311  *
 312  * In AC97 mode, we always use 48k/16bit/stereo.
 313  * Any request to change data type is ignored by
 314  * the card when it is running outside of legacy
 315  * mode.
 316  */
 317 static const struct snd_pcm_hardware snd_als300_playback_hw =
 318 {
 319         .info =                 (SNDRV_PCM_INFO_MMAP |
 320                                 SNDRV_PCM_INFO_INTERLEAVED |
 321                                 SNDRV_PCM_INFO_PAUSE |
 322                                 SNDRV_PCM_INFO_MMAP_VALID),
 323         .formats =              SNDRV_PCM_FMTBIT_S16,
 324         .rates =                SNDRV_PCM_RATE_48000,
 325         .rate_min =             48000,
 326         .rate_max =             48000,
 327         .channels_min =         2,
 328         .channels_max =         2,
 329         .buffer_bytes_max =     64 * 1024,
 330         .period_bytes_min =     64,
 331         .period_bytes_max =     32 * 1024,
 332         .periods_min =          2,
 333         .periods_max =          2,
 334 };
 335
 336 static const struct snd_pcm_hardware snd_als300_capture_hw =
 337 {
 338         .info =                 (SNDRV_PCM_INFO_MMAP |
 339                                 SNDRV_PCM_INFO_INTERLEAVED |
 340                                 SNDRV_PCM_INFO_PAUSE |
 341                                 SNDRV_PCM_INFO_MMAP_VALID),
 342         .formats =              SNDRV_PCM_FMTBIT_S16,
 343         .rates =                SNDRV_PCM_RATE_48000,
 344         .rate_min =             48000,
 345         .rate_max =             48000,
 346         .channels_min =         2,
 347         .channels_max =         2,
 348         .buffer_bytes_max =     64 * 1024,
 349         .period_bytes_min =     64,
 350         .period_bytes_max =     32 * 1024,
 351         .periods_min =          2,
 352         .periods_max =          2,
 353 };
 354
 355 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
 356 {
 357         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 358         struct snd_pcm_runtime *runtime = substream->runtime;
 359         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 360                                                                 GFP_KERNEL);
 361
 362         if (!data)
 363                 return -ENOMEM;
 364         chip->playback_substream = substream;
 365         runtime->hw = snd_als300_playback_hw;
 366         runtime->private_data = data;
 367         data->control_register = PLAYBACK_CONTROL;
 368         data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
 369         return 0;
 370 }
 371
 372 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
 373 {
 374         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 375         struct snd_als300_substream_data *data;
 376
 377         data = substream->runtime->private_data;
 378         kfree(data);
 379         chip->playback_substream = NULL;
 380         return 0;
 381 }
 382
 383 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
 384 {
 385         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 386         struct snd_pcm_runtime *runtime = substream->runtime;
 387         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 388                                                                 GFP_KERNEL);
 389
 390         if (!data)
 391                 return -ENOMEM;
 392         chip->capture_substream = substream;
 393         runtime->hw = snd_als300_capture_hw;
 394         runtime->private_data = data;
 395         data->control_register = RECORD_CONTROL;
 396         data->block_counter_register = RECORD_BLOCK_COUNTER;
 397         return 0;
 398 }
 399
 400 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
 401 {
 402         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 403         struct snd_als300_substream_data *data;
 404
 405         data = substream->runtime->private_data;
 406         kfree(data);
 407         chip->capture_substream = NULL;
 408         return 0;
 409 }
 410
 411 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
 412 {
 413         u32 tmp;
 414         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 415         struct snd_pcm_runtime *runtime = substream->runtime;
 416         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 417         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 418
 419         spin_lock_irq(&chip->reg_lock);
 420         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 421         tmp &= ~TRANSFER_START;
 422
 423         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
 424                                                 period_bytes, buffer_bytes);
 425
 426         /* set block size */
 427         tmp &= 0xffff0000;
 428         tmp |= period_bytes - 1;
 429         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
 430
 431         /* set dma area */
 432         snd_als300_gcr_write(chip->port, PLAYBACK_START,
 433                                         runtime->dma_addr);
 434         snd_als300_gcr_write(chip->port, PLAYBACK_END,
 435                                         runtime->dma_addr + buffer_bytes - 1);
 436         spin_unlock_irq(&chip->reg_lock);
 437         return 0;
 438 }
 439
 440 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
 441 {
 442         u32 tmp;
 443         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 444         struct snd_pcm_runtime *runtime = substream->runtime;
 445         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 446         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 447
 448         spin_lock_irq(&chip->reg_lock);
 449         tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
 450         tmp &= ~TRANSFER_START;
 451
 452         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
 453                                                         buffer_bytes);
 454
 455         /* set block size */
 456         tmp &= 0xffff0000;
 457         tmp |= period_bytes - 1;
 458
 459         /* set dma area */
 460         snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
 461         snd_als300_gcr_write(chip->port, RECORD_START,
 462                                         runtime->dma_addr);
 463         snd_als300_gcr_write(chip->port, RECORD_END,
 464                                         runtime->dma_addr + buffer_bytes - 1);
 465         spin_unlock_irq(&chip->reg_lock);
 466         return 0;
 467 }
 468
 469 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
 470 {
 471         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 472         u32 tmp;
 473         struct snd_als300_substream_data *data;
 474         unsigned short reg;
 475         int ret = 0;
 476
 477         data = substream->runtime->private_data;
 478         reg = data->control_register;
 479
 480         spin_lock(&chip->reg_lock);
 481         switch (cmd) {
 482         case SNDRV_PCM_TRIGGER_START:
 483         case SNDRV_PCM_TRIGGER_RESUME:
 484                 tmp = snd_als300_gcr_read(chip->port, reg);
 485                 data->period_flipflop = 1;
 486                 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
 487                 snd_als300_dbgplay("TRIGGER START\n");
 488                 break;
 489         case SNDRV_PCM_TRIGGER_STOP:
 490         case SNDRV_PCM_TRIGGER_SUSPEND:
 491                 tmp = snd_als300_gcr_read(chip->port, reg);
 492                 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
 493                 snd_als300_dbgplay("TRIGGER STOP\n");
 494                 break;
 495         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 496                 tmp = snd_als300_gcr_read(chip->port, reg);
 497                 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
 498                 snd_als300_dbgplay("TRIGGER PAUSE\n");
 499                 break;
 500         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 501                 tmp = snd_als300_gcr_read(chip->port, reg);
 502                 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
 503                 snd_als300_dbgplay("TRIGGER RELEASE\n");
 504                 break;
 505         default:
 506                 snd_als300_dbgplay("TRIGGER INVALID\n");
 507                 ret = -EINVAL;
 508         }
 509         spin_unlock(&chip->reg_lock);
 510         return ret;
 511 }
 512
 513 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
 514 {
 515         u16 current_ptr;
 516         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 517         struct snd_als300_substream_data *data;
 518         unsigned short period_bytes;
 519
 520         data = substream->runtime->private_data;
 521         period_bytes = snd_pcm_lib_period_bytes(substream);
 522
 523         spin_lock(&chip->reg_lock);
 524         current_ptr = (u16) snd_als300_gcr_read(chip->port,
 525                                         data->block_counter_register) + 4;
 526         spin_unlock(&chip->reg_lock);
 527         if (current_ptr > period_bytes)
 528                 current_ptr = 0;
 529         else
 530                 current_ptr = period_bytes - current_ptr;
 531
 532         if (data->period_flipflop == 0)
 533                 current_ptr += period_bytes;
 534         snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
 535         return bytes_to_frames(substream->runtime, current_ptr);
 536 }
 537
 538 static const struct snd_pcm_ops snd_als300_playback_ops = {
 539         .open =         snd_als300_playback_open,
 540         .close =        snd_als300_playback_close,
 541         .prepare =      snd_als300_playback_prepare,
 542         .trigger =      snd_als300_trigger,
 543         .pointer =      snd_als300_pointer,
 544 };
 545
 546 static const struct snd_pcm_ops snd_als300_capture_ops = {
 547         .open =         snd_als300_capture_open,
 548         .close =        snd_als300_capture_close,
 549         .prepare =      snd_als300_capture_prepare,
 550         .trigger =      snd_als300_trigger,
 551         .pointer =      snd_als300_pointer,
 552 };
 553
 554 static int snd_als300_new_pcm(struct snd_als300 *chip)
 555 {
 556         struct snd_pcm *pcm;
 557         int err;
 558
 559         err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
 560         if (err < 0)
 561                 return err;
 562         pcm->private_data = chip;
 563         strcpy(pcm->name, "ALS300");
 564         chip->pcm = pcm;
 565
 566         /* set operators */
 567         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 568                                 &snd_als300_playback_ops);
 569         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 570                                 &snd_als300_capture_ops);
 571
 572         /* pre-allocation of buffers */
 573         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
 574                                        64*1024, 64*1024);
 575         return 0;
 576 }
 577
 578 static void snd_als300_init(struct snd_als300 *chip)
 579 {
 580         unsigned long flags;
 581         u32 tmp;
 582
 583         spin_lock_irqsave(&chip->reg_lock, flags);
 584         chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
 585                                                                 & 0x0000000F;
 586         /* Setup DRAM */
 587         tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
 588         snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
 589                                                 (tmp | DRAM_MODE_2)
 590                                                 & ~WRITE_TRANS_START);
 591
 592         /* Enable IRQ output */
 593         snd_als300_set_irq_flag(chip, IRQ_ENABLE);
 594
 595         /* Unmute hardware devices so their outputs get routed to
 596          * the onboard mixer */
 597         tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 598         snd_als300_gcr_write(chip->port, MISC_CONTROL,
 599                         tmp | VMUTE_NORMAL | MMUTE_NORMAL);
 600
 601         /* Reset volumes */
 602         snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
 603
 604         /* Make sure playback transfer is stopped */
 605         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 606         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
 607                         tmp & ~TRANSFER_START);
 608         spin_unlock_irqrestore(&chip->reg_lock, flags);
 609 }
 610
 611 static int snd_als300_create(struct snd_card *card,
 612                              struct pci_dev *pci, int chip_type,
 613                              struct snd_als300 **rchip)
 614 {
 615         struct snd_als300 *chip;
 616         void *irq_handler;
 617         int err;
 618
 619         static const struct snd_device_ops ops = {
 620                 .dev_free = snd_als300_dev_free,
 621         };
 622         *rchip = NULL;
 623
 624         if ((err = pci_enable_device(pci)) < 0)
 625                 return err;
 626
 627         if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
 628                 dev_err(card->dev, "error setting 28bit DMA mask\n");
 629                 pci_disable_device(pci);
 630                 return -ENXIO;
 631         }
 632         pci_set_master(pci);
 633
 634         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 635         if (chip == NULL) {
 636                 pci_disable_device(pci);
 637                 return -ENOMEM;
 638         }
 639
 640         chip->card = card;
 641         chip->pci = pci;
 642         chip->irq = -1;
 643         chip->chip_type = chip_type;
 644         spin_lock_init(&chip->reg_lock);
 645
 646         if ((err = pci_request_regions(pci, "ALS300")) < 0) {
 647                 kfree(chip);
 648                 pci_disable_device(pci);
 649                 return err;
 650         }
 651         chip->port = pci_resource_start(pci, 0);
 652
 653         if (chip->chip_type == DEVICE_ALS300_PLUS)
 654                 irq_handler = snd_als300plus_interrupt;
 655         else
 656                 irq_handler = snd_als300_interrupt;
 657
 658         if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
 659                         KBUILD_MODNAME, chip)) {
 660                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
 661                 snd_als300_free(chip);
 662                 return -EBUSY;
 663         }
 664         chip->irq = pci->irq;
 665         card->sync_irq = chip->irq;
 666
 667         snd_als300_init(chip);
 668
 669         err = snd_als300_ac97(chip);
 670         if (err < 0) {
 671                 dev_err(card->dev, "Could not create ac97\n");
 672                 snd_als300_free(chip);
 673                 return err;
 674         }
 675
 676         if ((err = snd_als300_new_pcm(chip)) < 0) {
 677                 dev_err(card->dev, "Could not create PCM\n");
 678                 snd_als300_free(chip);
 679                 return err;
 680         }
 681
 682         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
 683                                                 chip, &ops)) < 0) {
 684                 snd_als300_free(chip);
 685                 return err;
 686         }
 687
 688         *rchip = chip;
 689         return 0;
 690 }
 691
 692 #ifdef CONFIG_PM_SLEEP
 693 static int snd_als300_suspend(struct device *dev)
 694 {
 695         struct snd_card *card = dev_get_drvdata(dev);
 696         struct snd_als300 *chip = card->private_data;
 697
 698         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 699         snd_ac97_suspend(chip->ac97);
 700         return 0;
 701 }
 702
 703 static int snd_als300_resume(struct device *dev)
 704 {
 705         struct snd_card *card = dev_get_drvdata(dev);
 706         struct snd_als300 *chip = card->private_data;
 707
 708         snd_als300_init(chip);
 709         snd_ac97_resume(chip->ac97);
 710
 711         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 712         return 0;
 713 }
 714
 715 static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
 716 #define SND_ALS300_PM_OPS       &snd_als300_pm
 717 #else
 718 #define SND_ALS300_PM_OPS       NULL
 719 #endif
 720
 721 static int snd_als300_probe(struct pci_dev *pci,
 722                              const struct pci_device_id *pci_id)
 723 {
 724         static int dev;
 725         struct snd_card *card;
 726         struct snd_als300 *chip;
 727         int err, chip_type;
 728
 729         if (dev >= SNDRV_CARDS)
 730                 return -ENODEV;
 731         if (!enable[dev]) {
 732                 dev++;
 733                 return -ENOENT;
 734         }
 735
 736         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 737                            0, &card);
 738
 739         if (err < 0)
 740                 return err;
 741
 742         chip_type = pci_id->driver_data;
 743
 744         if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
 745                 snd_card_free(card);
 746                 return err;
 747         }
 748         card->private_data = chip;
 749
 750         strcpy(card->driver, "ALS300");
 751         if (chip->chip_type == DEVICE_ALS300_PLUS)
 752                 /* don't know much about ALS300+ yet
 753                  * print revision number for now */
 754                 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
 755         else
 756                 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
 757                                                         chip->revision - 1);
 758         sprintf(card->longname, "%s at 0x%lx irq %i",
 759                                 card->shortname, chip->port, chip->irq);
 760
 761         if ((err = snd_card_register(card)) < 0) {
 762                 snd_card_free(card);
 763                 return err;
 764         }
 765         pci_set_drvdata(pci, card);
 766         dev++;
 767         return 0;
 768 }
 769
 770 static struct pci_driver als300_driver = {
 771         .name = KBUILD_MODNAME,
 772         .id_table = snd_als300_ids,
 773         .probe = snd_als300_probe,
 774         .remove = snd_als300_remove,
 775         .driver = {
 776                 .pm = SND_ALS300_PM_OPS,
 777         },
 778 };
 779
 780 module_pci_driver(als300_driver);