kernel/sound/pci/als300.c

   1 /*
   2  *  als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
   3  *  Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  *
  19  *  TODO
  20  *  4 channel playback for ALS300+
  21  *  gameport
  22  *  mpu401
  23  *  opl3
  24  *
  25  *  NOTES
  26  *  The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
  27  *  the position in the current period, NOT the whole buffer. It is important
  28  *  to know which period we are in so we can calculate the correct pointer.
  29  *  This is why we always use 2 periods. We can then use a flip-flop variable
  30  *  to keep track of what period we are in.
  31  */
  32
  33 #include <linux/delay.h>
  34 #include <linux/init.h>
  35 #include <linux/module.h>
  36 #include <linux/pci.h>
  37 #include <linux/dma-mapping.h>
  38 #include <linux/interrupt.h>
  39 #include <linux/slab.h>
  40 #include <linux/io.h>
  41
  42 #include <sound/core.h>
  43 #include <sound/control.h>
  44 #include <sound/initval.h>
  45 #include <sound/pcm.h>
  46 #include <sound/pcm_params.h>
  47 #include <sound/ac97_codec.h>
  48 #include <sound/opl3.h>
  49
  50 /* snd_als300_set_irq_flag */
  51 #define IRQ_DISABLE             0
  52 #define IRQ_ENABLE              1
  53
  54 /* I/O port layout */
  55 #define AC97_ACCESS             0x00
  56 #define AC97_READ               0x04
  57 #define AC97_STATUS             0x06
  58 #define   AC97_DATA_AVAIL               (1<<6)
  59 #define   AC97_BUSY                     (1<<7)
  60 #define ALS300_IRQ_STATUS       0x07            /* ALS300 Only */
  61 #define   IRQ_PLAYBACK                  (1<<3)
  62 #define   IRQ_CAPTURE                   (1<<2)
  63 #define GCR_DATA                0x08
  64 #define GCR_INDEX               0x0C
  65 #define ALS300P_DRAM_IRQ_STATUS 0x0D            /* ALS300+ Only */
  66 #define MPU_IRQ_STATUS          0x0E            /* ALS300 Rev. E+, ALS300+ */
  67 #define ALS300P_IRQ_STATUS      0x0F            /* ALS300+ Only */
  68
  69 /* General Control Registers */
  70 #define PLAYBACK_START          0x80
  71 #define PLAYBACK_END            0x81
  72 #define PLAYBACK_CONTROL        0x82
  73 #define   TRANSFER_START                (1<<16)
  74 #define   FIFO_PAUSE                    (1<<17)
  75 #define RECORD_START            0x83
  76 #define RECORD_END              0x84
  77 #define RECORD_CONTROL          0x85
  78 #define DRAM_WRITE_CONTROL      0x8B
  79 #define   WRITE_TRANS_START             (1<<16)
  80 #define   DRAM_MODE_2                   (1<<17)
  81 #define MISC_CONTROL            0x8C
  82 #define   IRQ_SET_BIT                   (1<<15)
  83 #define   VMUTE_NORMAL                  (1<<20)
  84 #define   MMUTE_NORMAL                  (1<<21)
  85 #define MUS_VOC_VOL             0x8E
  86 #define PLAYBACK_BLOCK_COUNTER  0x9A
  87 #define RECORD_BLOCK_COUNTER    0x9B
  88
  89 #define DEBUG_PLAY_REC  0
  90
  91 #if DEBUG_PLAY_REC
  92 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
  93 #else
  94 #define snd_als300_dbgplay(format, args...)
  95 #endif
  96
  97 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
  98
  99 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
 100 MODULE_DESCRIPTION("Avance Logic ALS300");
 101 MODULE_LICENSE("GPL");
 102 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
 103
 104 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 105 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 106 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 107
 108 module_param_array(index, int, NULL, 0444);
 109 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
 110 module_param_array(id, charp, NULL, 0444);
 111 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
 112 module_param_array(enable, bool, NULL, 0444);
 113 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
 114
 115 struct snd_als300 {
 116         unsigned long port;
 117         spinlock_t reg_lock;
 118         struct snd_card *card;
 119         struct pci_dev *pci;
 120
 121         struct snd_pcm *pcm;
 122         struct snd_pcm_substream *playback_substream;
 123         struct snd_pcm_substream *capture_substream;
 124
 125         struct snd_ac97 *ac97;
 126         struct snd_opl3 *opl3;
 127
 128         struct resource *res_port;
 129
 130         int irq;
 131
 132         int chip_type; /* ALS300 or ALS300+ */
 133
 134         char revision;
 135 };
 136
 137 struct snd_als300_substream_data {
 138         int period_flipflop;
 139         int control_register;
 140         int block_counter_register;
 141 };
 142
 143 static const struct pci_device_id snd_als300_ids[] = {
 144         { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
 145         { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
 146         { 0, }
 147 };
 148
 149 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
 150
 151 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
 152 {
 153         outb(reg, port+GCR_INDEX);
 154         return inl(port+GCR_DATA);
 155 }
 156
 157 static inline void snd_als300_gcr_write(unsigned long port,
 158                                                 unsigned short reg, u32 val)
 159 {
 160         outb(reg, port+GCR_INDEX);
 161         outl(val, port+GCR_DATA);
 162 }
 163
 164 /* Enable/Disable Interrupts */
 165 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
 166 {
 167         u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 168
 169         /* boolean XOR check, since old vs. new hardware have
 170            directly reversed bit setting for ENABLE and DISABLE.
 171            ALS300+ acts like newer versions of ALS300 */
 172         if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
 173                                                 (cmd == IRQ_ENABLE)) == 0)
 174                 tmp |= IRQ_SET_BIT;
 175         else
 176                 tmp &= ~IRQ_SET_BIT;
 177         snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
 178 }
 179
 180 static int snd_als300_free(struct snd_als300 *chip)
 181 {
 182         snd_als300_set_irq_flag(chip, IRQ_DISABLE);
 183         if (chip->irq >= 0)
 184                 free_irq(chip->irq, chip);
 185         pci_release_regions(chip->pci);
 186         pci_disable_device(chip->pci);
 187         kfree(chip);
 188         return 0;
 189 }
 190
 191 static int snd_als300_dev_free(struct snd_device *device)
 192 {
 193         struct snd_als300 *chip = device->device_data;
 194         return snd_als300_free(chip);
 195 }
 196
 197 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
 198 {
 199         u8 status;
 200         struct snd_als300 *chip = dev_id;
 201         struct snd_als300_substream_data *data;
 202
 203         status = inb(chip->port+ALS300_IRQ_STATUS);
 204         if (!status) /* shared IRQ, for different device?? Exit ASAP! */
 205                 return IRQ_NONE;
 206
 207         /* ACK everything ASAP */
 208         outb(status, chip->port+ALS300_IRQ_STATUS);
 209         if (status & IRQ_PLAYBACK) {
 210                 if (chip->pcm && chip->playback_substream) {
 211                         data = chip->playback_substream->runtime->private_data;
 212                         data->period_flipflop ^= 1;
 213                         snd_pcm_period_elapsed(chip->playback_substream);
 214                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 215                 }
 216         }
 217         if (status & IRQ_CAPTURE) {
 218                 if (chip->pcm && chip->capture_substream) {
 219                         data = chip->capture_substream->runtime->private_data;
 220                         data->period_flipflop ^= 1;
 221                         snd_pcm_period_elapsed(chip->capture_substream);
 222                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 223                 }
 224         }
 225         return IRQ_HANDLED;
 226 }
 227
 228 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
 229 {
 230         u8 general, mpu, dram;
 231         struct snd_als300 *chip = dev_id;
 232         struct snd_als300_substream_data *data;
 233
 234         general = inb(chip->port+ALS300P_IRQ_STATUS);
 235         mpu = inb(chip->port+MPU_IRQ_STATUS);
 236         dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
 237
 238         /* shared IRQ, for different device?? Exit ASAP! */
 239         if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
 240                 return IRQ_NONE;
 241
 242         if (general & IRQ_PLAYBACK) {
 243                 if (chip->pcm && chip->playback_substream) {
 244                         outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
 245                         data = chip->playback_substream->runtime->private_data;
 246                         data->period_flipflop ^= 1;
 247                         snd_pcm_period_elapsed(chip->playback_substream);
 248                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 249                 }
 250         }
 251         if (general & IRQ_CAPTURE) {
 252                 if (chip->pcm && chip->capture_substream) {
 253                         outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
 254                         data = chip->capture_substream->runtime->private_data;
 255                         data->period_flipflop ^= 1;
 256                         snd_pcm_period_elapsed(chip->capture_substream);
 257                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 258                 }
 259         }
 260         /* FIXME: Ack other interrupt types. Not important right now as
 261          * those other devices aren't enabled. */
 262         return IRQ_HANDLED;
 263 }
 264
 265 static void snd_als300_remove(struct pci_dev *pci)
 266 {
 267         snd_card_free(pci_get_drvdata(pci));
 268 }
 269
 270 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
 271                                                         unsigned short reg)
 272 {
 273         int i;
 274         struct snd_als300 *chip = ac97->private_data;
 275
 276         for (i = 0; i < 1000; i++) {
 277                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 278                         break;
 279                 udelay(10);
 280         }
 281         outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
 282
 283         for (i = 0; i < 1000; i++) {
 284                 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
 285                         break;
 286                 udelay(10);
 287         }
 288         return inw(chip->port+AC97_READ);
 289 }
 290
 291 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
 292                                 unsigned short reg, unsigned short val)
 293 {
 294         int i;
 295         struct snd_als300 *chip = ac97->private_data;
 296
 297         for (i = 0; i < 1000; i++) {
 298                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 299                         break;
 300                 udelay(10);
 301         }
 302         outl((reg << 24) | val, chip->port+AC97_ACCESS);
 303 }
 304
 305 static int snd_als300_ac97(struct snd_als300 *chip)
 306 {
 307         struct snd_ac97_bus *bus;
 308         struct snd_ac97_template ac97;
 309         int err;
 310         static struct snd_ac97_bus_ops ops = {
 311                 .write = snd_als300_ac97_write,
 312                 .read = snd_als300_ac97_read,
 313         };
 314
 315         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
 316                 return err;
 317
 318         memset(&ac97, 0, sizeof(ac97));
 319         ac97.private_data = chip;
 320
 321         return snd_ac97_mixer(bus, &ac97, &chip->ac97);
 322 }
 323
 324 /* hardware definition
 325  *
 326  * In AC97 mode, we always use 48k/16bit/stereo.
 327  * Any request to change data type is ignored by
 328  * the card when it is running outside of legacy
 329  * mode.
 330  */
 331 static struct snd_pcm_hardware snd_als300_playback_hw =
 332 {
 333         .info =                 (SNDRV_PCM_INFO_MMAP |
 334                                 SNDRV_PCM_INFO_INTERLEAVED |
 335                                 SNDRV_PCM_INFO_PAUSE |
 336                                 SNDRV_PCM_INFO_MMAP_VALID),
 337         .formats =              SNDRV_PCM_FMTBIT_S16,
 338         .rates =                SNDRV_PCM_RATE_48000,
 339         .rate_min =             48000,
 340         .rate_max =             48000,
 341         .channels_min =         2,
 342         .channels_max =         2,
 343         .buffer_bytes_max =     64 * 1024,
 344         .period_bytes_min =     64,
 345         .period_bytes_max =     32 * 1024,
 346         .periods_min =          2,
 347         .periods_max =          2,
 348 };
 349
 350 static struct snd_pcm_hardware snd_als300_capture_hw =
 351 {
 352         .info =                 (SNDRV_PCM_INFO_MMAP |
 353                                 SNDRV_PCM_INFO_INTERLEAVED |
 354                                 SNDRV_PCM_INFO_PAUSE |
 355                                 SNDRV_PCM_INFO_MMAP_VALID),
 356         .formats =              SNDRV_PCM_FMTBIT_S16,
 357         .rates =                SNDRV_PCM_RATE_48000,
 358         .rate_min =             48000,
 359         .rate_max =             48000,
 360         .channels_min =         2,
 361         .channels_max =         2,
 362         .buffer_bytes_max =     64 * 1024,
 363         .period_bytes_min =     64,
 364         .period_bytes_max =     32 * 1024,
 365         .periods_min =          2,
 366         .periods_max =          2,
 367 };
 368
 369 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
 370 {
 371         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 372         struct snd_pcm_runtime *runtime = substream->runtime;
 373         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 374                                                                 GFP_KERNEL);
 375
 376         if (!data)
 377                 return -ENOMEM;
 378         chip->playback_substream = substream;
 379         runtime->hw = snd_als300_playback_hw;
 380         runtime->private_data = data;
 381         data->control_register = PLAYBACK_CONTROL;
 382         data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
 383         return 0;
 384 }
 385
 386 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
 387 {
 388         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 389         struct snd_als300_substream_data *data;
 390
 391         data = substream->runtime->private_data;
 392         kfree(data);
 393         chip->playback_substream = NULL;
 394         snd_pcm_lib_free_pages(substream);
 395         return 0;
 396 }
 397
 398 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
 399 {
 400         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 401         struct snd_pcm_runtime *runtime = substream->runtime;
 402         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 403                                                                 GFP_KERNEL);
 404
 405         if (!data)
 406                 return -ENOMEM;
 407         chip->capture_substream = substream;
 408         runtime->hw = snd_als300_capture_hw;
 409         runtime->private_data = data;
 410         data->control_register = RECORD_CONTROL;
 411         data->block_counter_register = RECORD_BLOCK_COUNTER;
 412         return 0;
 413 }
 414
 415 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
 416 {
 417         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 418         struct snd_als300_substream_data *data;
 419
 420         data = substream->runtime->private_data;
 421         kfree(data);
 422         chip->capture_substream = NULL;
 423         snd_pcm_lib_free_pages(substream);
 424         return 0;
 425 }
 426
 427 static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
 428                                     struct snd_pcm_hw_params *hw_params)
 429 {
 430         return snd_pcm_lib_malloc_pages(substream,
 431                                         params_buffer_bytes(hw_params));
 432 }
 433
 434 static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
 435 {
 436         return snd_pcm_lib_free_pages(substream);
 437 }
 438
 439 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
 440 {
 441         u32 tmp;
 442         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 443         struct snd_pcm_runtime *runtime = substream->runtime;
 444         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 445         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 446
 447         spin_lock_irq(&chip->reg_lock);
 448         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 449         tmp &= ~TRANSFER_START;
 450
 451         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
 452                                                 period_bytes, buffer_bytes);
 453
 454         /* set block size */
 455         tmp &= 0xffff0000;
 456         tmp |= period_bytes - 1;
 457         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
 458
 459         /* set dma area */
 460         snd_als300_gcr_write(chip->port, PLAYBACK_START,
 461                                         runtime->dma_addr);
 462         snd_als300_gcr_write(chip->port, PLAYBACK_END,
 463                                         runtime->dma_addr + buffer_bytes - 1);
 464         spin_unlock_irq(&chip->reg_lock);
 465         return 0;
 466 }
 467
 468 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
 469 {
 470         u32 tmp;
 471         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 472         struct snd_pcm_runtime *runtime = substream->runtime;
 473         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 474         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 475
 476         spin_lock_irq(&chip->reg_lock);
 477         tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
 478         tmp &= ~TRANSFER_START;
 479
 480         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
 481                                                         buffer_bytes);
 482
 483         /* set block size */
 484         tmp &= 0xffff0000;
 485         tmp |= period_bytes - 1;
 486
 487         /* set dma area */
 488         snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
 489         snd_als300_gcr_write(chip->port, RECORD_START,
 490                                         runtime->dma_addr);
 491         snd_als300_gcr_write(chip->port, RECORD_END,
 492                                         runtime->dma_addr + buffer_bytes - 1);
 493         spin_unlock_irq(&chip->reg_lock);
 494         return 0;
 495 }
 496
 497 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
 498 {
 499         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 500         u32 tmp;
 501         struct snd_als300_substream_data *data;
 502         unsigned short reg;
 503         int ret = 0;
 504
 505         data = substream->runtime->private_data;
 506         reg = data->control_register;
 507
 508         spin_lock(&chip->reg_lock);
 509         switch (cmd) {
 510         case SNDRV_PCM_TRIGGER_START:
 511         case SNDRV_PCM_TRIGGER_RESUME:
 512                 tmp = snd_als300_gcr_read(chip->port, reg);
 513                 data->period_flipflop = 1;
 514                 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
 515                 snd_als300_dbgplay("TRIGGER START\n");
 516                 break;
 517         case SNDRV_PCM_TRIGGER_STOP:
 518         case SNDRV_PCM_TRIGGER_SUSPEND:
 519                 tmp = snd_als300_gcr_read(chip->port, reg);
 520                 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
 521                 snd_als300_dbgplay("TRIGGER STOP\n");
 522                 break;
 523         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 524                 tmp = snd_als300_gcr_read(chip->port, reg);
 525                 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
 526                 snd_als300_dbgplay("TRIGGER PAUSE\n");
 527                 break;
 528         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 529                 tmp = snd_als300_gcr_read(chip->port, reg);
 530                 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
 531                 snd_als300_dbgplay("TRIGGER RELEASE\n");
 532                 break;
 533         default:
 534                 snd_als300_dbgplay("TRIGGER INVALID\n");
 535                 ret = -EINVAL;
 536         }
 537         spin_unlock(&chip->reg_lock);
 538         return ret;
 539 }
 540
 541 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
 542 {
 543         u16 current_ptr;
 544         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 545         struct snd_als300_substream_data *data;
 546         unsigned short period_bytes;
 547
 548         data = substream->runtime->private_data;
 549         period_bytes = snd_pcm_lib_period_bytes(substream);
 550
 551         spin_lock(&chip->reg_lock);
 552         current_ptr = (u16) snd_als300_gcr_read(chip->port,
 553                                         data->block_counter_register) + 4;
 554         spin_unlock(&chip->reg_lock);
 555         if (current_ptr > period_bytes)
 556                 current_ptr = 0;
 557         else
 558                 current_ptr = period_bytes - current_ptr;
 559
 560         if (data->period_flipflop == 0)
 561                 current_ptr += period_bytes;
 562         snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
 563         return bytes_to_frames(substream->runtime, current_ptr);
 564 }
 565
 566 static struct snd_pcm_ops snd_als300_playback_ops = {
 567         .open =         snd_als300_playback_open,
 568         .close =        snd_als300_playback_close,
 569         .ioctl =        snd_pcm_lib_ioctl,
 570         .hw_params =    snd_als300_pcm_hw_params,
 571         .hw_free =      snd_als300_pcm_hw_free,
 572         .prepare =      snd_als300_playback_prepare,
 573         .trigger =      snd_als300_trigger,
 574         .pointer =      snd_als300_pointer,
 575 };
 576
 577 static struct snd_pcm_ops snd_als300_capture_ops = {
 578         .open =         snd_als300_capture_open,
 579         .close =        snd_als300_capture_close,
 580         .ioctl =        snd_pcm_lib_ioctl,
 581         .hw_params =    snd_als300_pcm_hw_params,
 582         .hw_free =      snd_als300_pcm_hw_free,
 583         .prepare =      snd_als300_capture_prepare,
 584         .trigger =      snd_als300_trigger,
 585         .pointer =      snd_als300_pointer,
 586 };
 587
 588 static int snd_als300_new_pcm(struct snd_als300 *chip)
 589 {
 590         struct snd_pcm *pcm;
 591         int err;
 592
 593         err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
 594         if (err < 0)
 595                 return err;
 596         pcm->private_data = chip;
 597         strcpy(pcm->name, "ALS300");
 598         chip->pcm = pcm;
 599
 600         /* set operators */
 601         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 602                                 &snd_als300_playback_ops);
 603         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 604                                 &snd_als300_capture_ops);
 605
 606         /* pre-allocation of buffers */
 607         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 608         snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
 609         return 0;
 610 }
 611
 612 static void snd_als300_init(struct snd_als300 *chip)
 613 {
 614         unsigned long flags;
 615         u32 tmp;
 616
 617         spin_lock_irqsave(&chip->reg_lock, flags);
 618         chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
 619                                                                 & 0x0000000F;
 620         /* Setup DRAM */
 621         tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
 622         snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
 623                                                 (tmp | DRAM_MODE_2)
 624                                                 & ~WRITE_TRANS_START);
 625
 626         /* Enable IRQ output */
 627         snd_als300_set_irq_flag(chip, IRQ_ENABLE);
 628
 629         /* Unmute hardware devices so their outputs get routed to
 630          * the onboard mixer */
 631         tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 632         snd_als300_gcr_write(chip->port, MISC_CONTROL,
 633                         tmp | VMUTE_NORMAL | MMUTE_NORMAL);
 634
 635         /* Reset volumes */
 636         snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
 637
 638         /* Make sure playback transfer is stopped */
 639         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 640         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
 641                         tmp & ~TRANSFER_START);
 642         spin_unlock_irqrestore(&chip->reg_lock, flags);
 643 }
 644
 645 static int snd_als300_create(struct snd_card *card,
 646                              struct pci_dev *pci, int chip_type,
 647                              struct snd_als300 **rchip)
 648 {
 649         struct snd_als300 *chip;
 650         void *irq_handler;
 651         int err;
 652
 653         static struct snd_device_ops ops = {
 654                 .dev_free = snd_als300_dev_free,
 655         };
 656         *rchip = NULL;
 657
 658         if ((err = pci_enable_device(pci)) < 0)
 659                 return err;
 660
 661         if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
 662                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
 663                 dev_err(card->dev, "error setting 28bit DMA mask\n");
 664                 pci_disable_device(pci);
 665                 return -ENXIO;
 666         }
 667         pci_set_master(pci);
 668
 669         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 670         if (chip == NULL) {
 671                 pci_disable_device(pci);
 672                 return -ENOMEM;
 673         }
 674
 675         chip->card = card;
 676         chip->pci = pci;
 677         chip->irq = -1;
 678         chip->chip_type = chip_type;
 679         spin_lock_init(&chip->reg_lock);
 680
 681         if ((err = pci_request_regions(pci, "ALS300")) < 0) {
 682                 kfree(chip);
 683                 pci_disable_device(pci);
 684                 return err;
 685         }
 686         chip->port = pci_resource_start(pci, 0);
 687
 688         if (chip->chip_type == DEVICE_ALS300_PLUS)
 689                 irq_handler = snd_als300plus_interrupt;
 690         else
 691                 irq_handler = snd_als300_interrupt;
 692
 693         if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
 694                         KBUILD_MODNAME, chip)) {
 695                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
 696                 snd_als300_free(chip);
 697                 return -EBUSY;
 698         }
 699         chip->irq = pci->irq;
 700
 701
 702         snd_als300_init(chip);
 703
 704         err = snd_als300_ac97(chip);
 705         if (err < 0) {
 706                 dev_err(card->dev, "Could not create ac97\n");
 707                 snd_als300_free(chip);
 708                 return err;
 709         }
 710
 711         if ((err = snd_als300_new_pcm(chip)) < 0) {
 712                 dev_err(card->dev, "Could not create PCM\n");
 713                 snd_als300_free(chip);
 714                 return err;
 715         }
 716
 717         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
 718                                                 chip, &ops)) < 0) {
 719                 snd_als300_free(chip);
 720                 return err;
 721         }
 722
 723         *rchip = chip;
 724         return 0;
 725 }
 726
 727 #ifdef CONFIG_PM_SLEEP
 728 static int snd_als300_suspend(struct device *dev)
 729 {
 730         struct snd_card *card = dev_get_drvdata(dev);
 731         struct snd_als300 *chip = card->private_data;
 732
 733         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 734         snd_pcm_suspend_all(chip->pcm);
 735         snd_ac97_suspend(chip->ac97);
 736         return 0;
 737 }
 738
 739 static int snd_als300_resume(struct device *dev)
 740 {
 741         struct snd_card *card = dev_get_drvdata(dev);
 742         struct snd_als300 *chip = card->private_data;
 743
 744         snd_als300_init(chip);
 745         snd_ac97_resume(chip->ac97);
 746
 747         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 748         return 0;
 749 }
 750
 751 static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
 752 #define SND_ALS300_PM_OPS       &snd_als300_pm
 753 #else
 754 #define SND_ALS300_PM_OPS       NULL
 755 #endif
 756
 757 static int snd_als300_probe(struct pci_dev *pci,
 758                              const struct pci_device_id *pci_id)
 759 {
 760         static int dev;
 761         struct snd_card *card;
 762         struct snd_als300 *chip;
 763         int err, chip_type;
 764
 765         if (dev >= SNDRV_CARDS)
 766                 return -ENODEV;
 767         if (!enable[dev]) {
 768                 dev++;
 769                 return -ENOENT;
 770         }
 771
 772         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 773                            0, &card);
 774
 775         if (err < 0)
 776                 return err;
 777
 778         chip_type = pci_id->driver_data;
 779
 780         if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
 781                 snd_card_free(card);
 782                 return err;
 783         }
 784         card->private_data = chip;
 785
 786         strcpy(card->driver, "ALS300");
 787         if (chip->chip_type == DEVICE_ALS300_PLUS)
 788                 /* don't know much about ALS300+ yet
 789                  * print revision number for now */
 790                 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
 791         else
 792                 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
 793                                                         chip->revision - 1);
 794         sprintf(card->longname, "%s at 0x%lx irq %i",
 795                                 card->shortname, chip->port, chip->irq);
 796
 797         if ((err = snd_card_register(card)) < 0) {
 798                 snd_card_free(card);
 799                 return err;
 800         }
 801         pci_set_drvdata(pci, card);
 802         dev++;
 803         return 0;
 804 }
 805
 806 static struct pci_driver als300_driver = {
 807         .name = KBUILD_MODNAME,
 808         .id_table = snd_als300_ids,
 809         .probe = snd_als300_probe,
 810         .remove = snd_als300_remove,
 811         .driver = {
 812                 .pm = SND_ALS300_PM_OPS,
 813         },
 814 };
 815
 816 module_pci_driver(als300_driver);