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
  41 #include <asm/io.h>
  42
  43 #include <sound/core.h>
  44 #include <sound/control.h>
  45 #include <sound/initval.h>
  46 #include <sound/pcm.h>
  47 #include <sound/pcm_params.h>
  48 #include <sound/ac97_codec.h>
  49 #include <sound/opl3.h>
  50
  51 /* snd_als300_set_irq_flag */
  52 #define IRQ_DISABLE             0
  53 #define IRQ_ENABLE              1
  54
  55 /* I/O port layout */
  56 #define AC97_ACCESS             0x00
  57 #define AC97_READ               0x04
  58 #define AC97_STATUS             0x06
  59 #define   AC97_DATA_AVAIL               (1<<6)
  60 #define   AC97_BUSY                     (1<<7)
  61 #define ALS300_IRQ_STATUS       0x07            /* ALS300 Only */
  62 #define   IRQ_PLAYBACK                  (1<<3)
  63 #define   IRQ_CAPTURE                   (1<<2)
  64 #define GCR_DATA                0x08
  65 #define GCR_INDEX               0x0C
  66 #define ALS300P_DRAM_IRQ_STATUS 0x0D            /* ALS300+ Only */
  67 #define MPU_IRQ_STATUS          0x0E            /* ALS300 Rev. E+, ALS300+ */
  68 #define ALS300P_IRQ_STATUS      0x0F            /* ALS300+ Only */
  69
  70 /* General Control Registers */
  71 #define PLAYBACK_START          0x80
  72 #define PLAYBACK_END            0x81
  73 #define PLAYBACK_CONTROL        0x82
  74 #define   TRANSFER_START                (1<<16)
  75 #define   FIFO_PAUSE                    (1<<17)
  76 #define RECORD_START            0x83
  77 #define RECORD_END              0x84
  78 #define RECORD_CONTROL          0x85
  79 #define DRAM_WRITE_CONTROL      0x8B
  80 #define   WRITE_TRANS_START             (1<<16)
  81 #define   DRAM_MODE_2                   (1<<17)
  82 #define MISC_CONTROL            0x8C
  83 #define   IRQ_SET_BIT                   (1<<15)
  84 #define   VMUTE_NORMAL                  (1<<20)
  85 #define   MMUTE_NORMAL                  (1<<21)
  86 #define MUS_VOC_VOL             0x8E
  87 #define PLAYBACK_BLOCK_COUNTER  0x9A
  88 #define RECORD_BLOCK_COUNTER    0x9B
  89
  90 #define DEBUG_PLAY_REC  0
  91
  92 #if DEBUG_PLAY_REC
  93 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
  94 #else
  95 #define snd_als300_dbgplay(format, args...)
  96 #endif
  97
  98 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
  99
 100 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
 101 MODULE_DESCRIPTION("Avance Logic ALS300");
 102 MODULE_LICENSE("GPL");
 103 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
 104
 105 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 106 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 107 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 108
 109 module_param_array(index, int, NULL, 0444);
 110 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
 111 module_param_array(id, charp, NULL, 0444);
 112 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
 113 module_param_array(enable, bool, NULL, 0444);
 114 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
 115
 116 struct snd_als300 {
 117         unsigned long port;
 118         spinlock_t reg_lock;
 119         struct snd_card *card;
 120         struct pci_dev *pci;
 121
 122         struct snd_pcm *pcm;
 123         struct snd_pcm_substream *playback_substream;
 124         struct snd_pcm_substream *capture_substream;
 125
 126         struct snd_ac97 *ac97;
 127         struct snd_opl3 *opl3;
 128
 129         struct resource *res_port;
 130
 131         int irq;
 132
 133         int chip_type; /* ALS300 or ALS300+ */
 134
 135         char revision;
 136 };
 137
 138 struct snd_als300_substream_data {
 139         int period_flipflop;
 140         int control_register;
 141         int block_counter_register;
 142 };
 143
 144 static DEFINE_PCI_DEVICE_TABLE(snd_als300_ids) = {
 145         { 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
 146         { 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
 147         { 0, }
 148 };
 149
 150 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
 151
 152 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
 153 {
 154         outb(reg, port+GCR_INDEX);
 155         return inl(port+GCR_DATA);
 156 }
 157
 158 static inline void snd_als300_gcr_write(unsigned long port,
 159                                                 unsigned short reg, u32 val)
 160 {
 161         outb(reg, port+GCR_INDEX);
 162         outl(val, port+GCR_DATA);
 163 }
 164
 165 /* Enable/Disable Interrupts */
 166 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
 167 {
 168         u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 169
 170         /* boolean XOR check, since old vs. new hardware have
 171            directly reversed bit setting for ENABLE and DISABLE.
 172            ALS300+ acts like newer versions of ALS300 */
 173         if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
 174                                                 (cmd == IRQ_ENABLE)) == 0)
 175                 tmp |= IRQ_SET_BIT;
 176         else
 177                 tmp &= ~IRQ_SET_BIT;
 178         snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
 179 }
 180
 181 static int snd_als300_free(struct snd_als300 *chip)
 182 {
 183         snd_als300_set_irq_flag(chip, IRQ_DISABLE);
 184         if (chip->irq >= 0)
 185                 free_irq(chip->irq, chip);
 186         pci_release_regions(chip->pci);
 187         pci_disable_device(chip->pci);
 188         kfree(chip);
 189         return 0;
 190 }
 191
 192 static int snd_als300_dev_free(struct snd_device *device)
 193 {
 194         struct snd_als300 *chip = device->device_data;
 195         return snd_als300_free(chip);
 196 }
 197
 198 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
 199 {
 200         u8 status;
 201         struct snd_als300 *chip = dev_id;
 202         struct snd_als300_substream_data *data;
 203
 204         status = inb(chip->port+ALS300_IRQ_STATUS);
 205         if (!status) /* shared IRQ, for different device?? Exit ASAP! */
 206                 return IRQ_NONE;
 207
 208         /* ACK everything ASAP */
 209         outb(status, chip->port+ALS300_IRQ_STATUS);
 210         if (status & IRQ_PLAYBACK) {
 211                 if (chip->pcm && chip->playback_substream) {
 212                         data = chip->playback_substream->runtime->private_data;
 213                         data->period_flipflop ^= 1;
 214                         snd_pcm_period_elapsed(chip->playback_substream);
 215                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 216                 }
 217         }
 218         if (status & IRQ_CAPTURE) {
 219                 if (chip->pcm && chip->capture_substream) {
 220                         data = chip->capture_substream->runtime->private_data;
 221                         data->period_flipflop ^= 1;
 222                         snd_pcm_period_elapsed(chip->capture_substream);
 223                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 224                 }
 225         }
 226         return IRQ_HANDLED;
 227 }
 228
 229 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
 230 {
 231         u8 general, mpu, dram;
 232         struct snd_als300 *chip = dev_id;
 233         struct snd_als300_substream_data *data;
 234
 235         general = inb(chip->port+ALS300P_IRQ_STATUS);
 236         mpu = inb(chip->port+MPU_IRQ_STATUS);
 237         dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
 238
 239         /* shared IRQ, for different device?? Exit ASAP! */
 240         if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
 241                 return IRQ_NONE;
 242
 243         if (general & IRQ_PLAYBACK) {
 244                 if (chip->pcm && chip->playback_substream) {
 245                         outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
 246                         data = chip->playback_substream->runtime->private_data;
 247                         data->period_flipflop ^= 1;
 248                         snd_pcm_period_elapsed(chip->playback_substream);
 249                         snd_als300_dbgplay("IRQ_PLAYBACK\n");
 250                 }
 251         }
 252         if (general & IRQ_CAPTURE) {
 253                 if (chip->pcm && chip->capture_substream) {
 254                         outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
 255                         data = chip->capture_substream->runtime->private_data;
 256                         data->period_flipflop ^= 1;
 257                         snd_pcm_period_elapsed(chip->capture_substream);
 258                         snd_als300_dbgplay("IRQ_CAPTURE\n");
 259                 }
 260         }
 261         /* FIXME: Ack other interrupt types. Not important right now as
 262          * those other devices aren't enabled. */
 263         return IRQ_HANDLED;
 264 }
 265
 266 static void snd_als300_remove(struct pci_dev *pci)
 267 {
 268         snd_card_free(pci_get_drvdata(pci));
 269 }
 270
 271 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
 272                                                         unsigned short reg)
 273 {
 274         int i;
 275         struct snd_als300 *chip = ac97->private_data;
 276
 277         for (i = 0; i < 1000; i++) {
 278                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 279                         break;
 280                 udelay(10);
 281         }
 282         outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
 283
 284         for (i = 0; i < 1000; i++) {
 285                 if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
 286                         break;
 287                 udelay(10);
 288         }
 289         return inw(chip->port+AC97_READ);
 290 }
 291
 292 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
 293                                 unsigned short reg, unsigned short val)
 294 {
 295         int i;
 296         struct snd_als300 *chip = ac97->private_data;
 297
 298         for (i = 0; i < 1000; i++) {
 299                 if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 300                         break;
 301                 udelay(10);
 302         }
 303         outl((reg << 24) | val, chip->port+AC97_ACCESS);
 304 }
 305
 306 static int snd_als300_ac97(struct snd_als300 *chip)
 307 {
 308         struct snd_ac97_bus *bus;
 309         struct snd_ac97_template ac97;
 310         int err;
 311         static struct snd_ac97_bus_ops ops = {
 312                 .write = snd_als300_ac97_write,
 313                 .read = snd_als300_ac97_read,
 314         };
 315
 316         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
 317                 return err;
 318
 319         memset(&ac97, 0, sizeof(ac97));
 320         ac97.private_data = chip;
 321
 322         return snd_ac97_mixer(bus, &ac97, &chip->ac97);
 323 }
 324
 325 /* hardware definition
 326  *
 327  * In AC97 mode, we always use 48k/16bit/stereo.
 328  * Any request to change data type is ignored by
 329  * the card when it is running outside of legacy
 330  * mode.
 331  */
 332 static struct snd_pcm_hardware snd_als300_playback_hw =
 333 {
 334         .info =                 (SNDRV_PCM_INFO_MMAP |
 335                                 SNDRV_PCM_INFO_INTERLEAVED |
 336                                 SNDRV_PCM_INFO_PAUSE |
 337                                 SNDRV_PCM_INFO_MMAP_VALID),
 338         .formats =              SNDRV_PCM_FMTBIT_S16,
 339         .rates =                SNDRV_PCM_RATE_48000,
 340         .rate_min =             48000,
 341         .rate_max =             48000,
 342         .channels_min =         2,
 343         .channels_max =         2,
 344         .buffer_bytes_max =     64 * 1024,
 345         .period_bytes_min =     64,
 346         .period_bytes_max =     32 * 1024,
 347         .periods_min =          2,
 348         .periods_max =          2,
 349 };
 350
 351 static struct snd_pcm_hardware snd_als300_capture_hw =
 352 {
 353         .info =                 (SNDRV_PCM_INFO_MMAP |
 354                                 SNDRV_PCM_INFO_INTERLEAVED |
 355                                 SNDRV_PCM_INFO_PAUSE |
 356                                 SNDRV_PCM_INFO_MMAP_VALID),
 357         .formats =              SNDRV_PCM_FMTBIT_S16,
 358         .rates =                SNDRV_PCM_RATE_48000,
 359         .rate_min =             48000,
 360         .rate_max =             48000,
 361         .channels_min =         2,
 362         .channels_max =         2,
 363         .buffer_bytes_max =     64 * 1024,
 364         .period_bytes_min =     64,
 365         .period_bytes_max =     32 * 1024,
 366         .periods_min =          2,
 367         .periods_max =          2,
 368 };
 369
 370 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
 371 {
 372         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 373         struct snd_pcm_runtime *runtime = substream->runtime;
 374         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 375                                                                 GFP_KERNEL);
 376
 377         if (!data)
 378                 return -ENOMEM;
 379         chip->playback_substream = substream;
 380         runtime->hw = snd_als300_playback_hw;
 381         runtime->private_data = data;
 382         data->control_register = PLAYBACK_CONTROL;
 383         data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
 384         return 0;
 385 }
 386
 387 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
 388 {
 389         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 390         struct snd_als300_substream_data *data;
 391
 392         data = substream->runtime->private_data;
 393         kfree(data);
 394         chip->playback_substream = NULL;
 395         snd_pcm_lib_free_pages(substream);
 396         return 0;
 397 }
 398
 399 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
 400 {
 401         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 402         struct snd_pcm_runtime *runtime = substream->runtime;
 403         struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 404                                                                 GFP_KERNEL);
 405
 406         if (!data)
 407                 return -ENOMEM;
 408         chip->capture_substream = substream;
 409         runtime->hw = snd_als300_capture_hw;
 410         runtime->private_data = data;
 411         data->control_register = RECORD_CONTROL;
 412         data->block_counter_register = RECORD_BLOCK_COUNTER;
 413         return 0;
 414 }
 415
 416 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
 417 {
 418         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 419         struct snd_als300_substream_data *data;
 420
 421         data = substream->runtime->private_data;
 422         kfree(data);
 423         chip->capture_substream = NULL;
 424         snd_pcm_lib_free_pages(substream);
 425         return 0;
 426 }
 427
 428 static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
 429                                     struct snd_pcm_hw_params *hw_params)
 430 {
 431         return snd_pcm_lib_malloc_pages(substream,
 432                                         params_buffer_bytes(hw_params));
 433 }
 434
 435 static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
 436 {
 437         return snd_pcm_lib_free_pages(substream);
 438 }
 439
 440 static int snd_als300_playback_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, PLAYBACK_CONTROL);
 450         tmp &= ~TRANSFER_START;
 451
 452         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
 453                                                 period_bytes, buffer_bytes);
 454
 455         /* set block size */
 456         tmp &= 0xffff0000;
 457         tmp |= period_bytes - 1;
 458         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
 459
 460         /* set dma area */
 461         snd_als300_gcr_write(chip->port, PLAYBACK_START,
 462                                         runtime->dma_addr);
 463         snd_als300_gcr_write(chip->port, PLAYBACK_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_capture_prepare(struct snd_pcm_substream *substream)
 470 {
 471         u32 tmp;
 472         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 473         struct snd_pcm_runtime *runtime = substream->runtime;
 474         unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 475         unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 476
 477         spin_lock_irq(&chip->reg_lock);
 478         tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
 479         tmp &= ~TRANSFER_START;
 480
 481         snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
 482                                                         buffer_bytes);
 483
 484         /* set block size */
 485         tmp &= 0xffff0000;
 486         tmp |= period_bytes - 1;
 487
 488         /* set dma area */
 489         snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
 490         snd_als300_gcr_write(chip->port, RECORD_START,
 491                                         runtime->dma_addr);
 492         snd_als300_gcr_write(chip->port, RECORD_END,
 493                                         runtime->dma_addr + buffer_bytes - 1);
 494         spin_unlock_irq(&chip->reg_lock);
 495         return 0;
 496 }
 497
 498 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
 499 {
 500         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 501         u32 tmp;
 502         struct snd_als300_substream_data *data;
 503         unsigned short reg;
 504         int ret = 0;
 505
 506         data = substream->runtime->private_data;
 507         reg = data->control_register;
 508
 509         spin_lock(&chip->reg_lock);
 510         switch (cmd) {
 511         case SNDRV_PCM_TRIGGER_START:
 512         case SNDRV_PCM_TRIGGER_RESUME:
 513                 tmp = snd_als300_gcr_read(chip->port, reg);
 514                 data->period_flipflop = 1;
 515                 snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
 516                 snd_als300_dbgplay("TRIGGER START\n");
 517                 break;
 518         case SNDRV_PCM_TRIGGER_STOP:
 519         case SNDRV_PCM_TRIGGER_SUSPEND:
 520                 tmp = snd_als300_gcr_read(chip->port, reg);
 521                 snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
 522                 snd_als300_dbgplay("TRIGGER STOP\n");
 523                 break;
 524         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 525                 tmp = snd_als300_gcr_read(chip->port, reg);
 526                 snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
 527                 snd_als300_dbgplay("TRIGGER PAUSE\n");
 528                 break;
 529         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 530                 tmp = snd_als300_gcr_read(chip->port, reg);
 531                 snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
 532                 snd_als300_dbgplay("TRIGGER RELEASE\n");
 533                 break;
 534         default:
 535                 snd_als300_dbgplay("TRIGGER INVALID\n");
 536                 ret = -EINVAL;
 537         }
 538         spin_unlock(&chip->reg_lock);
 539         return ret;
 540 }
 541
 542 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
 543 {
 544         u16 current_ptr;
 545         struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 546         struct snd_als300_substream_data *data;
 547         unsigned short period_bytes;
 548
 549         data = substream->runtime->private_data;
 550         period_bytes = snd_pcm_lib_period_bytes(substream);
 551
 552         spin_lock(&chip->reg_lock);
 553         current_ptr = (u16) snd_als300_gcr_read(chip->port,
 554                                         data->block_counter_register) + 4;
 555         spin_unlock(&chip->reg_lock);
 556         if (current_ptr > period_bytes)
 557                 current_ptr = 0;
 558         else
 559                 current_ptr = period_bytes - current_ptr;
 560
 561         if (data->period_flipflop == 0)
 562                 current_ptr += period_bytes;
 563         snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
 564         return bytes_to_frames(substream->runtime, current_ptr);
 565 }
 566
 567 static struct snd_pcm_ops snd_als300_playback_ops = {
 568         .open =         snd_als300_playback_open,
 569         .close =        snd_als300_playback_close,
 570         .ioctl =        snd_pcm_lib_ioctl,
 571         .hw_params =    snd_als300_pcm_hw_params,
 572         .hw_free =      snd_als300_pcm_hw_free,
 573         .prepare =      snd_als300_playback_prepare,
 574         .trigger =      snd_als300_trigger,
 575         .pointer =      snd_als300_pointer,
 576 };
 577
 578 static struct snd_pcm_ops snd_als300_capture_ops = {
 579         .open =         snd_als300_capture_open,
 580         .close =        snd_als300_capture_close,
 581         .ioctl =        snd_pcm_lib_ioctl,
 582         .hw_params =    snd_als300_pcm_hw_params,
 583         .hw_free =      snd_als300_pcm_hw_free,
 584         .prepare =      snd_als300_capture_prepare,
 585         .trigger =      snd_als300_trigger,
 586         .pointer =      snd_als300_pointer,
 587 };
 588
 589 static int snd_als300_new_pcm(struct snd_als300 *chip)
 590 {
 591         struct snd_pcm *pcm;
 592         int err;
 593
 594         err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
 595         if (err < 0)
 596                 return err;
 597         pcm->private_data = chip;
 598         strcpy(pcm->name, "ALS300");
 599         chip->pcm = pcm;
 600
 601         /* set operators */
 602         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 603                                 &snd_als300_playback_ops);
 604         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 605                                 &snd_als300_capture_ops);
 606
 607         /* pre-allocation of buffers */
 608         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 609         snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
 610         return 0;
 611 }
 612
 613 static void snd_als300_init(struct snd_als300 *chip)
 614 {
 615         unsigned long flags;
 616         u32 tmp;
 617
 618         spin_lock_irqsave(&chip->reg_lock, flags);
 619         chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
 620                                                                 & 0x0000000F;
 621         /* Setup DRAM */
 622         tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
 623         snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
 624                                                 (tmp | DRAM_MODE_2)
 625                                                 & ~WRITE_TRANS_START);
 626
 627         /* Enable IRQ output */
 628         snd_als300_set_irq_flag(chip, IRQ_ENABLE);
 629
 630         /* Unmute hardware devices so their outputs get routed to
 631          * the onboard mixer */
 632         tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 633         snd_als300_gcr_write(chip->port, MISC_CONTROL,
 634                         tmp | VMUTE_NORMAL | MMUTE_NORMAL);
 635
 636         /* Reset volumes */
 637         snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
 638
 639         /* Make sure playback transfer is stopped */
 640         tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 641         snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
 642                         tmp & ~TRANSFER_START);
 643         spin_unlock_irqrestore(&chip->reg_lock, flags);
 644 }
 645
 646 static int snd_als300_create(struct snd_card *card,
 647                              struct pci_dev *pci, int chip_type,
 648                              struct snd_als300 **rchip)
 649 {
 650         struct snd_als300 *chip;
 651         void *irq_handler;
 652         int err;
 653
 654         static struct snd_device_ops ops = {
 655                 .dev_free = snd_als300_dev_free,
 656         };
 657         *rchip = NULL;
 658
 659         if ((err = pci_enable_device(pci)) < 0)
 660                 return err;
 661
 662         if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
 663                 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
 664                 dev_err(card->dev, "error setting 28bit DMA mask\n");
 665                 pci_disable_device(pci);
 666                 return -ENXIO;
 667         }
 668         pci_set_master(pci);
 669
 670         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 671         if (chip == NULL) {
 672                 pci_disable_device(pci);
 673                 return -ENOMEM;
 674         }
 675
 676         chip->card = card;
 677         chip->pci = pci;
 678         chip->irq = -1;
 679         chip->chip_type = chip_type;
 680         spin_lock_init(&chip->reg_lock);
 681
 682         if ((err = pci_request_regions(pci, "ALS300")) < 0) {
 683                 kfree(chip);
 684                 pci_disable_device(pci);
 685                 return err;
 686         }
 687         chip->port = pci_resource_start(pci, 0);
 688
 689         if (chip->chip_type == DEVICE_ALS300_PLUS)
 690                 irq_handler = snd_als300plus_interrupt;
 691         else
 692                 irq_handler = snd_als300_interrupt;
 693
 694         if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
 695                         KBUILD_MODNAME, chip)) {
 696                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
 697                 snd_als300_free(chip);
 698                 return -EBUSY;
 699         }
 700         chip->irq = pci->irq;
 701
 702
 703         snd_als300_init(chip);
 704
 705         err = snd_als300_ac97(chip);
 706         if (err < 0) {
 707                 dev_err(card->dev, "Could not create ac97\n");
 708                 snd_als300_free(chip);
 709                 return err;
 710         }
 711
 712         if ((err = snd_als300_new_pcm(chip)) < 0) {
 713                 dev_err(card->dev, "Could not create PCM\n");
 714                 snd_als300_free(chip);
 715                 return err;
 716         }
 717
 718         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
 719                                                 chip, &ops)) < 0) {
 720                 snd_als300_free(chip);
 721                 return err;
 722         }
 723
 724         *rchip = chip;
 725         return 0;
 726 }
 727
 728 #ifdef CONFIG_PM_SLEEP
 729 static int snd_als300_suspend(struct device *dev)
 730 {
 731         struct pci_dev *pci = to_pci_dev(dev);
 732         struct snd_card *card = dev_get_drvdata(dev);
 733         struct snd_als300 *chip = card->private_data;
 734
 735         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 736         snd_pcm_suspend_all(chip->pcm);
 737         snd_ac97_suspend(chip->ac97);
 738
 739         pci_disable_device(pci);
 740         pci_save_state(pci);
 741         pci_set_power_state(pci, PCI_D3hot);
 742         return 0;
 743 }
 744
 745 static int snd_als300_resume(struct device *dev)
 746 {
 747         struct pci_dev *pci = to_pci_dev(dev);
 748         struct snd_card *card = dev_get_drvdata(dev);
 749         struct snd_als300 *chip = card->private_data;
 750
 751         pci_set_power_state(pci, PCI_D0);
 752         pci_restore_state(pci);
 753         if (pci_enable_device(pci) < 0) {
 754                 dev_err(dev, "pci_enable_device failed, disabling device\n");
 755                 snd_card_disconnect(card);
 756                 return -EIO;
 757         }
 758         pci_set_master(pci);
 759
 760         snd_als300_init(chip);
 761         snd_ac97_resume(chip->ac97);
 762
 763         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 764         return 0;
 765 }
 766
 767 static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
 768 #define SND_ALS300_PM_OPS       &snd_als300_pm
 769 #else
 770 #define SND_ALS300_PM_OPS       NULL
 771 #endif
 772
 773 static int snd_als300_probe(struct pci_dev *pci,
 774                              const struct pci_device_id *pci_id)
 775 {
 776         static int dev;
 777         struct snd_card *card;
 778         struct snd_als300 *chip;
 779         int err, chip_type;
 780
 781         if (dev >= SNDRV_CARDS)
 782                 return -ENODEV;
 783         if (!enable[dev]) {
 784                 dev++;
 785                 return -ENOENT;
 786         }
 787
 788         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 789                            0, &card);
 790
 791         if (err < 0)
 792                 return err;
 793
 794         chip_type = pci_id->driver_data;
 795
 796         if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
 797                 snd_card_free(card);
 798                 return err;
 799         }
 800         card->private_data = chip;
 801
 802         strcpy(card->driver, "ALS300");
 803         if (chip->chip_type == DEVICE_ALS300_PLUS)
 804                 /* don't know much about ALS300+ yet
 805                  * print revision number for now */
 806                 sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
 807         else
 808                 sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
 809                                                         chip->revision - 1);
 810         sprintf(card->longname, "%s at 0x%lx irq %i",
 811                                 card->shortname, chip->port, chip->irq);
 812
 813         if ((err = snd_card_register(card)) < 0) {
 814                 snd_card_free(card);
 815                 return err;
 816         }
 817         pci_set_drvdata(pci, card);
 818         dev++;
 819         return 0;
 820 }
 821
 822 static struct pci_driver als300_driver = {
 823         .name = KBUILD_MODNAME,
 824         .id_table = snd_als300_ids,
 825         .probe = snd_als300_probe,
 826         .remove = snd_als300_remove,
 827         .driver = {
 828                 .pm = SND_ALS300_PM_OPS,
 829         },
 830 };
 831
 832 module_pci_driver(als300_driver);