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