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 void snd_als300_free(struct snd_card *card)
 167 {
 168         struct snd_als300 *chip = card->private_data;
 169
 170         snd_als300_set_irq_flag(chip, IRQ_DISABLE);
 171 }
 172
 173 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
 174 {
 175         u8 status;
 176         struct snd_als300 *chip = dev_id;
 177         struct snd_als300_substream_data *data;
 178
 179         status = inb(chip->port+ALS300_IRQ_STATUS);
 180         if (!status) /* shared IRQ, for different device?? Exit ASAP! */
 181                 return IRQ_NONE;
 182
 183         /* ACK everything ASAP */
 184         outb(status, chip->port+ALS300_IRQ_STATUS);
 185         if (status & IRQ_PLAYBACK) {
 186                 if (chip->pcm && chip->playback_substream) {
 187                         data = chip->playback_substream->runtime->private_data;
 188                         data->period_flipflop ^= 1;
 189                         snd_pcm_period_elapsed(chip->playback_substream);
 190                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 191                 }
 192         }
 193         if (status & IRQ_CAPTURE) {
 194                 if (chip->pcm && chip->capture_substream) {
 195                         data = chip->capture_substream->runtime->private_data;
 196                         data->period_flipflop ^= 1;
 197                         snd_pcm_period_elapsed(chip->capture_substream);
 198                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 199                 }
 200         }
 201         return IRQ_HANDLED;
 202 }
 203
 204 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
 205 {
 206         u8 general, mpu, dram;
 207         struct snd_als300 *chip = dev_id;
 208         struct snd_als300_substream_data *data;
 209
 210         general = inb(chip->port+ALS300P_IRQ_STATUS);
 211         mpu = inb(chip->port+MPU_IRQ_STATUS);
 212         dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
 213
 214         /* shared IRQ, for different device?? Exit ASAP! */
 215         if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
 216                 return IRQ_NONE;
 217
 218         if (general & IRQ_PLAYBACK) {
 219                 if (chip->pcm && chip->playback_substream) {
 220                         outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
 221                         data = chip->playback_substream->runtime->private_data;
 222                         data->period_flipflop ^= 1;
 223                         snd_pcm_period_elapsed(chip->playback_substream);
 224                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 225                 }
 226         }
 227         if (general & IRQ_CAPTURE) {
 228                 if (chip->pcm && chip->capture_substream) {
 229                         outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
 230                         data = chip->capture_substream->runtime->private_data;
 231                         data->period_flipflop ^= 1;
 232                         snd_pcm_period_elapsed(chip->capture_substream);
 233                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 234                 }
 235         }
 236         /* FIXME: Ack other interrupt types. Not important right now as
 237          * those other devices aren't enabled. */
 238         return IRQ_HANDLED;
 239 }
 240
 241 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
 242                                                         unsigned short reg)
 243 {
 244         int i;
 245         struct snd_als300 *chip = ac97->private_data;
 246
 247         for (i = 0; i < 1000; i++) {
 248                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 249                         break;
 250                 udelay(10);
 251         }
 252         outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
 253
 254         for (i = 0; i < 1000; i++) {
 255                 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
 256                         break;
 257                 udelay(10);
 258         }
 259         return inw(chip->port+AC97_READ);
 260 }
 261
 262 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
 263                                 unsigned short reg, unsigned short val)
 264 {
 265         int i;
 266         struct snd_als300 *chip = ac97->private_data;
 267
 268         for (i = 0; i < 1000; i++) {
 269                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 270                         break;
 271                 udelay(10);
 272         }
 273         outl((reg << 24) | val, chip->port+AC97_ACCESS);
 274 }
 275
 276 static int snd_als300_ac97(struct snd_als300 *chip)
 277 {
 278         struct snd_ac97_bus *bus;
 279         struct snd_ac97_template ac97;
 280         int err;
 281         static const struct snd_ac97_bus_ops ops = {
 282                 .write = snd_als300_ac97_write,
 283                 .read = snd_als300_ac97_read,
 284         };
 285
 286         err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
 287         if (err < 0)
 288                 return err;
 289
 290         memset(&ac97, 0, sizeof(ac97));
 291         ac97.private_data = chip;
 292
 293         return snd_ac97_mixer(bus, &ac97, &chip->ac97);
 294 }
 295
 296 /* hardware definition
 297  *
 298  * In AC97 mode, we always use 48k/16bit/stereo.
 299  * Any request to change data type is ignored by
 300  * the card when it is running outside of legacy
 301  * mode.
 302  */
 303 static const struct snd_pcm_hardware snd_als300_playback_hw =
 304 {
 305         .info =                 (SNDRV_PCM_INFO_MMAP |
 306                                 SNDRV_PCM_INFO_INTERLEAVED |
 307                                 SNDRV_PCM_INFO_PAUSE |
 308                                 SNDRV_PCM_INFO_MMAP_VALID),
 309         .formats =              SNDRV_PCM_FMTBIT_S16,
 310         .rates =                SNDRV_PCM_RATE_48000,
 311         .rate_min =             48000,
 312         .rate_max =             48000,
 313         .channels_min =         2,
 314         .channels_max =         2,
 315         .buffer_bytes_max =     64 * 1024,
 316         .period_bytes_min =     64,
 317         .period_bytes_max =     32 * 1024,
 318         .periods_min =          2,
 319         .periods_max =          2,
 320 };
 321
 322 static const struct snd_pcm_hardware snd_als300_capture_hw =
 323 {
 324         .info =                 (SNDRV_PCM_INFO_MMAP |
 325                                 SNDRV_PCM_INFO_INTERLEAVED |
 326                                 SNDRV_PCM_INFO_PAUSE |
 327                                 SNDRV_PCM_INFO_MMAP_VALID),
 328         .formats =              SNDRV_PCM_FMTBIT_S16,
 329         .rates =                SNDRV_PCM_RATE_48000,
 330         .rate_min =             48000,
 331         .rate_max =             48000,
 332         .channels_min =         2,
 333         .channels_max =         2,
 334         .buffer_bytes_max =     64 * 1024,
 335         .period_bytes_min =     64,
 336         .period_bytes_max =     32 * 1024,
 337         .periods_min =          2,
 338         .periods_max =          2,
 339 };
 340
 341 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
 342 {
 343         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 344         struct snd_pcm_runtime *runtime = substream->runtime;
 345         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 346                                                                 GFP_KERNEL);
 347
 348         if (!data)
 349                 return -ENOMEM;
 350         chip->playback_substream = substream;
 351         runtime->hw = snd_als300_playback_hw;
 352         runtime->private_data = data;
 353         data->control_register = PLAYBACK_CONTROL;
 354         data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
 355         return 0;
 356 }
 357
 358 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
 359 {
 360         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 361         struct snd_als300_substream_data *data;
 362
 363         data = substream->runtime->private_data;
 364         kfree(data);
 365         chip->playback_substream = NULL;
 366         return 0;
 367 }
 368
 369 static int snd_als300_capture_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->capture_substream = substream;
 379         runtime->hw = snd_als300_capture_hw;
 380         runtime->private_data = data;
 381         data->control_register = RECORD_CONTROL;
 382         data->block_counter_register = RECORD_BLOCK_COUNTER;
 383         return 0;
 384 }
 385
 386 static int snd_als300_capture_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->capture_substream = NULL;
 394         return 0;
 395 }
 396
 397 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
 398 {
 399         u32 tmp;
 400         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 401         struct snd_pcm_runtime *runtime = substream->runtime;
 402         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 403         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 404
 405         spin_lock_irq(&chip->reg_lock);
 406         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 407         tmp &= ~TRANSFER_START;
 408
 409         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
 410                                                 period_bytes, buffer_bytes);
 411
 412         /* set block size */
 413         tmp &= 0xffff0000;
 414         tmp |= period_bytes - 1;
 415         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
 416
 417         /* set dma area */
 418         snd_als300_gcr_write(chip->port, PLAYBACK_START,
 419                                         runtime->dma_addr);
 420         snd_als300_gcr_write(chip->port, PLAYBACK_END,
 421                                         runtime->dma_addr + buffer_bytes - 1);
 422         spin_unlock_irq(&chip->reg_lock);
 423         return 0;
 424 }
 425
 426 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
 427 {
 428         u32 tmp;
 429         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 430         struct snd_pcm_runtime *runtime = substream->runtime;
 431         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 432         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 433
 434         spin_lock_irq(&chip->reg_lock);
 435         tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
 436         tmp &= ~TRANSFER_START;
 437
 438         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
 439                                                         buffer_bytes);
 440
 441         /* set block size */
 442         tmp &= 0xffff0000;
 443         tmp |= period_bytes - 1;
 444
 445         /* set dma area */
 446         snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
 447         snd_als300_gcr_write(chip->port, RECORD_START,
 448                                         runtime->dma_addr);
 449         snd_als300_gcr_write(chip->port, RECORD_END,
 450                                         runtime->dma_addr + buffer_bytes - 1);
 451         spin_unlock_irq(&chip->reg_lock);
 452         return 0;
 453 }
 454
 455 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
 456 {
 457         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 458         u32 tmp;
 459         struct snd_als300_substream_data *data;
 460         unsigned short reg;
 461         int ret = 0;
 462
 463         data = substream->runtime->private_data;
 464         reg = data->control_register;
 465
 466         spin_lock(&chip->reg_lock);
 467         switch (cmd) {
 468         case SNDRV_PCM_TRIGGER_START:
 469         case SNDRV_PCM_TRIGGER_RESUME:
 470                 tmp = snd_als300_gcr_read(chip->port, reg);
 471                 data->period_flipflop = 1;
 472                 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
 473                 snd_als300_dbgplay("TRIGGER START\n");
 474                 break;
 475         case SNDRV_PCM_TRIGGER_STOP:
 476         case SNDRV_PCM_TRIGGER_SUSPEND:
 477                 tmp = snd_als300_gcr_read(chip->port, reg);
 478                 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
 479                 snd_als300_dbgplay("TRIGGER STOP\n");
 480                 break;
 481         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 482                 tmp = snd_als300_gcr_read(chip->port, reg);
 483                 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
 484                 snd_als300_dbgplay("TRIGGER PAUSE\n");
 485                 break;
 486         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 487                 tmp = snd_als300_gcr_read(chip->port, reg);
 488                 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
 489                 snd_als300_dbgplay("TRIGGER RELEASE\n");
 490                 break;
 491         default:
 492                 snd_als300_dbgplay("TRIGGER INVALID\n");
 493                 ret = -EINVAL;
 494         }
 495         spin_unlock(&chip->reg_lock);
 496         return ret;
 497 }
 498
 499 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
 500 {
 501         u16 current_ptr;
 502         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 503         struct snd_als300_substream_data *data;
 504         unsigned short period_bytes;
 505
 506         data = substream->runtime->private_data;
 507         period_bytes = snd_pcm_lib_period_bytes(substream);
 508
 509         spin_lock(&chip->reg_lock);
 510         current_ptr = (u16) snd_als300_gcr_read(chip->port,
 511                                         data->block_counter_register) + 4;
 512         spin_unlock(&chip->reg_lock);
 513         if (current_ptr > period_bytes)
 514                 current_ptr = 0;
 515         else
 516                 current_ptr = period_bytes - current_ptr;
 517
 518         if (data->period_flipflop == 0)
 519                 current_ptr += period_bytes;
 520         snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
 521         return bytes_to_frames(substream->runtime, current_ptr);
 522 }
 523
 524 static const struct snd_pcm_ops snd_als300_playback_ops = {
 525         .open =         snd_als300_playback_open,
 526         .close =        snd_als300_playback_close,
 527         .prepare =      snd_als300_playback_prepare,
 528         .trigger =      snd_als300_trigger,
 529         .pointer =      snd_als300_pointer,
 530 };
 531
 532 static const struct snd_pcm_ops snd_als300_capture_ops = {
 533         .open =         snd_als300_capture_open,
 534         .close =        snd_als300_capture_close,
 535         .prepare =      snd_als300_capture_prepare,
 536         .trigger =      snd_als300_trigger,
 537         .pointer =      snd_als300_pointer,
 538 };
 539
 540 static int snd_als300_new_pcm(struct snd_als300 *chip)
 541 {
 542         struct snd_pcm *pcm;
 543         int err;
 544
 545         err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
 546         if (err < 0)
 547                 return err;
 548         pcm->private_data = chip;
 549         strcpy(pcm->name, "ALS300");
 550         chip->pcm = pcm;
 551
 552         /* set operators */
 553         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 554                                 &snd_als300_playback_ops);
 555         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 556                                 &snd_als300_capture_ops);
 557
 558         /* pre-allocation of buffers */
 559         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
 560                                        64*1024, 64*1024);
 561         return 0;
 562 }
 563
 564 static void snd_als300_init(struct snd_als300 *chip)
 565 {
 566         unsigned long flags;
 567         u32 tmp;
 568
 569         spin_lock_irqsave(&chip->reg_lock, flags);
 570         chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
 571                                                                 & 0x0000000F;
 572         /* Setup DRAM */
 573         tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
 574         snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
 575                                                 (tmp | DRAM_MODE_2)
 576                                                 & ~WRITE_TRANS_START);
 577
 578         /* Enable IRQ output */
 579         snd_als300_set_irq_flag(chip, IRQ_ENABLE);
 580
 581         /* Unmute hardware devices so their outputs get routed to
 582          * the onboard mixer */
 583         tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 584         snd_als300_gcr_write(chip->port, MISC_CONTROL,
 585                         tmp | VMUTE_NORMAL | MMUTE_NORMAL);
 586
 587         /* Reset volumes */
 588         snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
 589
 590         /* Make sure playback transfer is stopped */
 591         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 592         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
 593                         tmp & ~TRANSFER_START);
 594         spin_unlock_irqrestore(&chip->reg_lock, flags);
 595 }
 596
 597 static int snd_als300_create(struct snd_card *card,
 598                              struct pci_dev *pci, int chip_type)
 599 {
 600         struct snd_als300 *chip = card->private_data;
 601         void *irq_handler;
 602         int err;
 603
 604         err = pcim_enable_device(pci);
 605         if (err < 0)
 606                 return err;
 607
 608         if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
 609                 dev_err(card->dev, "error setting 28bit DMA mask\n");
 610                 return -ENXIO;
 611         }
 612         pci_set_master(pci);
 613
 614         chip->card = card;
 615         chip->pci = pci;
 616         chip->irq = -1;
 617         chip->chip_type = chip_type;
 618         spin_lock_init(&chip->reg_lock);
 619
 620         err = pci_request_regions(pci, "ALS300");
 621         if (err < 0)
 622                 return err;
 623
 624         chip->port = pci_resource_start(pci, 0);
 625
 626         if (chip->chip_type == DEVICE_ALS300_PLUS)
 627                 irq_handler = snd_als300plus_interrupt;
 628         else
 629                 irq_handler = snd_als300_interrupt;
 630
 631         if (devm_request_irq(&pci->dev, pci->irq, irq_handler, IRQF_SHARED,
 632                              KBUILD_MODNAME, chip)) {
 633                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
 634                 return -EBUSY;
 635         }
 636         chip->irq = pci->irq;
 637         card->sync_irq = chip->irq;
 638         card->private_free = snd_als300_free;
 639
 640         snd_als300_init(chip);
 641
 642         err = snd_als300_ac97(chip);
 643         if (err < 0) {
 644                 dev_err(card->dev, "Could not create ac97\n");
 645                 return err;
 646         }
 647
 648         err = snd_als300_new_pcm(chip);
 649         if (err < 0) {
 650                 dev_err(card->dev, "Could not create PCM\n");
 651                 return err;
 652         }
 653
 654         return 0;
 655 }
 656
 657 #ifdef CONFIG_PM_SLEEP
 658 static int snd_als300_suspend(struct device *dev)
 659 {
 660         struct snd_card *card = dev_get_drvdata(dev);
 661         struct snd_als300 *chip = card->private_data;
 662
 663         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 664         snd_ac97_suspend(chip->ac97);
 665         return 0;
 666 }
 667
 668 static int snd_als300_resume(struct device *dev)
 669 {
 670         struct snd_card *card = dev_get_drvdata(dev);
 671         struct snd_als300 *chip = card->private_data;
 672
 673         snd_als300_init(chip);
 674         snd_ac97_resume(chip->ac97);
 675
 676         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 677         return 0;
 678 }
 679
 680 static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
 681 #define SND_ALS300_PM_OPS       &snd_als300_pm
 682 #else
 683 #define SND_ALS300_PM_OPS       NULL
 684 #endif
 685
 686 static int snd_als300_probe(struct pci_dev *pci,
 687                              const struct pci_device_id *pci_id)
 688 {
 689         static int dev;
 690         struct snd_card *card;
 691         struct snd_als300 *chip;
 692         int err, chip_type;
 693
 694         if (dev >= SNDRV_CARDS)
 695                 return -ENODEV;
 696         if (!enable[dev]) {
 697                 dev++;
 698                 return -ENOENT;
 699         }
 700
 701         err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 702                                 sizeof(*chip), &card);
 703         if (err < 0)
 704                 return err;
 705         chip = card->private_data;
 706
 707         chip_type = pci_id->driver_data;
 708
 709         err = snd_als300_create(card, pci, chip_type);
 710         if (err < 0)
 711                 return err;
 712
 713         strcpy(card->driver, "ALS300");
 714         if (chip->chip_type == DEVICE_ALS300_PLUS)
 715                 /* don't know much about ALS300+ yet
 716                  * print revision number for now */
 717                 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
 718         else
 719                 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
 720                                                         chip->revision - 1);
 721         sprintf(card->longname, "%s at 0x%lx irq %i",
 722                                 card->shortname, chip->port, chip->irq);
 723
 724         err = snd_card_register(card);
 725         if (err < 0)
 726                 return err;
 727
 728         pci_set_drvdata(pci, card);
 729         dev++;
 730         return 0;
 731 }
 732
 733 static struct pci_driver als300_driver = {
 734         .name = KBUILD_MODNAME,
 735         .id_table = snd_als300_ids,
 736         .probe = snd_als300_probe,
 737         .driver = {
 738                 .pm = SND_ALS300_PM_OPS,
 739         },
 740 };
 741
 742 module_pci_driver(als300_driver);