linux/sound/pci/als300.c
<<
>>
Prefs
   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
  84enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
  85
  86MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
  87MODULE_DESCRIPTION("Avance Logic ALS300");
  88MODULE_LICENSE("GPL");
  89
  90static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  91static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  92static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  93
  94module_param_array(index, int, NULL, 0444);
  95MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
  96module_param_array(id, charp, NULL, 0444);
  97MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
  98module_param_array(enable, bool, NULL, 0444);
  99MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
 100
 101struct 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
 123struct snd_als300_substream_data {
 124        int period_flipflop;
 125        int control_register;
 126        int block_counter_register;
 127};
 128
 129static 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
 135MODULE_DEVICE_TABLE(pci, snd_als300_ids);
 136
 137static 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
 143static 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 */
 151static 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
 166static int snd_als300_free(struct snd_als300 *chip)
 167{
 168        snd_als300_set_irq_flag(chip, IRQ_DISABLE);
 169        if (chip->irq >= 0)
 170                free_irq(chip->irq, chip);
 171        pci_release_regions(chip->pci);
 172        pci_disable_device(chip->pci);
 173        kfree(chip);
 174        return 0;
 175}
 176
 177static int snd_als300_dev_free(struct snd_device *device)
 178{
 179        struct snd_als300 *chip = device->device_data;
 180        return snd_als300_free(chip);
 181}
 182
 183static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
 184{
 185        u8 status;
 186        struct snd_als300 *chip = dev_id;
 187        struct snd_als300_substream_data *data;
 188
 189        status = inb(chip->port+ALS300_IRQ_STATUS);
 190        if (!status) /* shared IRQ, for different device?? Exit ASAP! */
 191                return IRQ_NONE;
 192
 193        /* ACK everything ASAP */
 194        outb(status, chip->port+ALS300_IRQ_STATUS);
 195        if (status & IRQ_PLAYBACK) {
 196                if (chip->pcm && chip->playback_substream) {
 197                        data = chip->playback_substream->runtime->private_data;
 198                        data->period_flipflop ^= 1;
 199                        snd_pcm_period_elapsed(chip->playback_substream);
 200                        snd_als300_dbgplay("IRQ_PLAYBACK\n");
 201                }
 202        }
 203        if (status & IRQ_CAPTURE) {
 204                if (chip->pcm && chip->capture_substream) {
 205                        data = chip->capture_substream->runtime->private_data;
 206                        data->period_flipflop ^= 1;
 207                        snd_pcm_period_elapsed(chip->capture_substream);
 208                        snd_als300_dbgplay("IRQ_CAPTURE\n");
 209                }
 210        }
 211        return IRQ_HANDLED;
 212}
 213
 214static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
 215{
 216        u8 general, mpu, dram;
 217        struct snd_als300 *chip = dev_id;
 218        struct snd_als300_substream_data *data;
 219        
 220        general = inb(chip->port+ALS300P_IRQ_STATUS);
 221        mpu = inb(chip->port+MPU_IRQ_STATUS);
 222        dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
 223
 224        /* shared IRQ, for different device?? Exit ASAP! */
 225        if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
 226                return IRQ_NONE;
 227
 228        if (general & IRQ_PLAYBACK) {
 229                if (chip->pcm && chip->playback_substream) {
 230                        outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
 231                        data = chip->playback_substream->runtime->private_data;
 232                        data->period_flipflop ^= 1;
 233                        snd_pcm_period_elapsed(chip->playback_substream);
 234                        snd_als300_dbgplay("IRQ_PLAYBACK\n");
 235                }
 236        }
 237        if (general & IRQ_CAPTURE) {
 238                if (chip->pcm && chip->capture_substream) {
 239                        outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
 240                        data = chip->capture_substream->runtime->private_data;
 241                        data->period_flipflop ^= 1;
 242                        snd_pcm_period_elapsed(chip->capture_substream);
 243                        snd_als300_dbgplay("IRQ_CAPTURE\n");
 244                }
 245        }
 246        /* FIXME: Ack other interrupt types. Not important right now as
 247         * those other devices aren't enabled. */
 248        return IRQ_HANDLED;
 249}
 250
 251static void snd_als300_remove(struct pci_dev *pci)
 252{
 253        snd_card_free(pci_get_drvdata(pci));
 254}
 255
 256static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
 257                                                        unsigned short reg)
 258{
 259        int i;
 260        struct snd_als300 *chip = ac97->private_data;
 261
 262        for (i = 0; i < 1000; i++) {
 263                if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 264                        break;
 265                udelay(10);
 266        }
 267        outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
 268
 269        for (i = 0; i < 1000; i++) {
 270                if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
 271                        break;
 272                udelay(10);
 273        }
 274        return inw(chip->port+AC97_READ);
 275}
 276
 277static void snd_als300_ac97_write(struct snd_ac97 *ac97,
 278                                unsigned short reg, unsigned short val)
 279{
 280        int i;
 281        struct snd_als300 *chip = ac97->private_data;
 282
 283        for (i = 0; i < 1000; i++) {
 284                if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
 285                        break;
 286                udelay(10);
 287        }
 288        outl((reg << 24) | val, chip->port+AC97_ACCESS);
 289}
 290
 291static int snd_als300_ac97(struct snd_als300 *chip)
 292{
 293        struct snd_ac97_bus *bus;
 294        struct snd_ac97_template ac97;
 295        int err;
 296        static const struct snd_ac97_bus_ops ops = {
 297                .write = snd_als300_ac97_write,
 298                .read = snd_als300_ac97_read,
 299        };
 300
 301        err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
 302        if (err < 0)
 303                return err;
 304
 305        memset(&ac97, 0, sizeof(ac97));
 306        ac97.private_data = chip;
 307
 308        return snd_ac97_mixer(bus, &ac97, &chip->ac97);
 309}
 310
 311/* hardware definition
 312 *
 313 * In AC97 mode, we always use 48k/16bit/stereo.
 314 * Any request to change data type is ignored by
 315 * the card when it is running outside of legacy
 316 * mode.
 317 */
 318static const struct snd_pcm_hardware snd_als300_playback_hw =
 319{
 320        .info =                 (SNDRV_PCM_INFO_MMAP |
 321                                SNDRV_PCM_INFO_INTERLEAVED |
 322                                SNDRV_PCM_INFO_PAUSE |
 323                                SNDRV_PCM_INFO_MMAP_VALID),
 324        .formats =              SNDRV_PCM_FMTBIT_S16,
 325        .rates =                SNDRV_PCM_RATE_48000,
 326        .rate_min =             48000,
 327        .rate_max =             48000,
 328        .channels_min =         2,
 329        .channels_max =         2,
 330        .buffer_bytes_max =     64 * 1024,
 331        .period_bytes_min =     64,
 332        .period_bytes_max =     32 * 1024,
 333        .periods_min =          2,
 334        .periods_max =          2,
 335};
 336
 337static const struct snd_pcm_hardware snd_als300_capture_hw =
 338{
 339        .info =                 (SNDRV_PCM_INFO_MMAP |
 340                                SNDRV_PCM_INFO_INTERLEAVED |
 341                                SNDRV_PCM_INFO_PAUSE |
 342                                SNDRV_PCM_INFO_MMAP_VALID),
 343        .formats =              SNDRV_PCM_FMTBIT_S16,
 344        .rates =                SNDRV_PCM_RATE_48000,
 345        .rate_min =             48000,
 346        .rate_max =             48000,
 347        .channels_min =         2,
 348        .channels_max =         2,
 349        .buffer_bytes_max =     64 * 1024,
 350        .period_bytes_min =     64,
 351        .period_bytes_max =     32 * 1024,
 352        .periods_min =          2,
 353        .periods_max =          2,
 354};
 355
 356static int snd_als300_playback_open(struct snd_pcm_substream *substream)
 357{
 358        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 359        struct snd_pcm_runtime *runtime = substream->runtime;
 360        struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 361                                                                GFP_KERNEL);
 362
 363        if (!data)
 364                return -ENOMEM;
 365        chip->playback_substream = substream;
 366        runtime->hw = snd_als300_playback_hw;
 367        runtime->private_data = data;
 368        data->control_register = PLAYBACK_CONTROL;
 369        data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
 370        return 0;
 371}
 372
 373static int snd_als300_playback_close(struct snd_pcm_substream *substream)
 374{
 375        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 376        struct snd_als300_substream_data *data;
 377
 378        data = substream->runtime->private_data;
 379        kfree(data);
 380        chip->playback_substream = NULL;
 381        return 0;
 382}
 383
 384static int snd_als300_capture_open(struct snd_pcm_substream *substream)
 385{
 386        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 387        struct snd_pcm_runtime *runtime = substream->runtime;
 388        struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
 389                                                                GFP_KERNEL);
 390
 391        if (!data)
 392                return -ENOMEM;
 393        chip->capture_substream = substream;
 394        runtime->hw = snd_als300_capture_hw;
 395        runtime->private_data = data;
 396        data->control_register = RECORD_CONTROL;
 397        data->block_counter_register = RECORD_BLOCK_COUNTER;
 398        return 0;
 399}
 400
 401static int snd_als300_capture_close(struct snd_pcm_substream *substream)
 402{
 403        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 404        struct snd_als300_substream_data *data;
 405
 406        data = substream->runtime->private_data;
 407        kfree(data);
 408        chip->capture_substream = NULL;
 409        return 0;
 410}
 411
 412static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
 413{
 414        u32 tmp;
 415        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 416        struct snd_pcm_runtime *runtime = substream->runtime;
 417        unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 418        unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 419        
 420        spin_lock_irq(&chip->reg_lock);
 421        tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 422        tmp &= ~TRANSFER_START;
 423
 424        snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
 425                                                period_bytes, buffer_bytes);
 426        
 427        /* set block size */
 428        tmp &= 0xffff0000;
 429        tmp |= period_bytes - 1;
 430        snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
 431
 432        /* set dma area */
 433        snd_als300_gcr_write(chip->port, PLAYBACK_START,
 434                                        runtime->dma_addr);
 435        snd_als300_gcr_write(chip->port, PLAYBACK_END,
 436                                        runtime->dma_addr + buffer_bytes - 1);
 437        spin_unlock_irq(&chip->reg_lock);
 438        return 0;
 439}
 440
 441static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
 442{
 443        u32 tmp;
 444        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 445        struct snd_pcm_runtime *runtime = substream->runtime;
 446        unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
 447        unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
 448
 449        spin_lock_irq(&chip->reg_lock);
 450        tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
 451        tmp &= ~TRANSFER_START;
 452
 453        snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
 454                                                        buffer_bytes);
 455
 456        /* set block size */
 457        tmp &= 0xffff0000;
 458        tmp |= period_bytes - 1;
 459
 460        /* set dma area */
 461        snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
 462        snd_als300_gcr_write(chip->port, RECORD_START,
 463                                        runtime->dma_addr);
 464        snd_als300_gcr_write(chip->port, RECORD_END,
 465                                        runtime->dma_addr + buffer_bytes - 1);
 466        spin_unlock_irq(&chip->reg_lock);
 467        return 0;
 468}
 469
 470static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
 471{
 472        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 473        u32 tmp;
 474        struct snd_als300_substream_data *data;
 475        unsigned short reg;
 476        int ret = 0;
 477
 478        data = substream->runtime->private_data;
 479        reg = data->control_register;
 480
 481        spin_lock(&chip->reg_lock);
 482        switch (cmd) {
 483        case SNDRV_PCM_TRIGGER_START:
 484        case SNDRV_PCM_TRIGGER_RESUME:
 485                tmp = snd_als300_gcr_read(chip->port, reg);
 486                data->period_flipflop = 1;
 487                snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
 488                snd_als300_dbgplay("TRIGGER START\n");
 489                break;
 490        case SNDRV_PCM_TRIGGER_STOP:
 491        case SNDRV_PCM_TRIGGER_SUSPEND:
 492                tmp = snd_als300_gcr_read(chip->port, reg);
 493                snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
 494                snd_als300_dbgplay("TRIGGER STOP\n");
 495                break;
 496        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 497                tmp = snd_als300_gcr_read(chip->port, reg);
 498                snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
 499                snd_als300_dbgplay("TRIGGER PAUSE\n");
 500                break;
 501        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 502                tmp = snd_als300_gcr_read(chip->port, reg);
 503                snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
 504                snd_als300_dbgplay("TRIGGER RELEASE\n");
 505                break;
 506        default:
 507                snd_als300_dbgplay("TRIGGER INVALID\n");
 508                ret = -EINVAL;
 509        }
 510        spin_unlock(&chip->reg_lock);
 511        return ret;
 512}
 513
 514static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
 515{
 516        u16 current_ptr;
 517        struct snd_als300 *chip = snd_pcm_substream_chip(substream);
 518        struct snd_als300_substream_data *data;
 519        unsigned short period_bytes;
 520
 521        data = substream->runtime->private_data;
 522        period_bytes = snd_pcm_lib_period_bytes(substream);
 523        
 524        spin_lock(&chip->reg_lock);
 525        current_ptr = (u16) snd_als300_gcr_read(chip->port,
 526                                        data->block_counter_register) + 4;
 527        spin_unlock(&chip->reg_lock);
 528        if (current_ptr > period_bytes)
 529                current_ptr = 0;
 530        else
 531                current_ptr = period_bytes - current_ptr;
 532
 533        if (data->period_flipflop == 0)
 534                current_ptr += period_bytes;
 535        snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
 536        return bytes_to_frames(substream->runtime, current_ptr);
 537}
 538
 539static const struct snd_pcm_ops snd_als300_playback_ops = {
 540        .open =         snd_als300_playback_open,
 541        .close =        snd_als300_playback_close,
 542        .prepare =      snd_als300_playback_prepare,
 543        .trigger =      snd_als300_trigger,
 544        .pointer =      snd_als300_pointer,
 545};
 546
 547static const struct snd_pcm_ops snd_als300_capture_ops = {
 548        .open =         snd_als300_capture_open,
 549        .close =        snd_als300_capture_close,
 550        .prepare =      snd_als300_capture_prepare,
 551        .trigger =      snd_als300_trigger,
 552        .pointer =      snd_als300_pointer,
 553};
 554
 555static int snd_als300_new_pcm(struct snd_als300 *chip)
 556{
 557        struct snd_pcm *pcm;
 558        int err;
 559
 560        err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
 561        if (err < 0)
 562                return err;
 563        pcm->private_data = chip;
 564        strcpy(pcm->name, "ALS300");
 565        chip->pcm = pcm;
 566
 567        /* set operators */
 568        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 569                                &snd_als300_playback_ops);
 570        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 571                                &snd_als300_capture_ops);
 572
 573        /* pre-allocation of buffers */
 574        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
 575                                       64*1024, 64*1024);
 576        return 0;
 577}
 578
 579static void snd_als300_init(struct snd_als300 *chip)
 580{
 581        unsigned long flags;
 582        u32 tmp;
 583        
 584        spin_lock_irqsave(&chip->reg_lock, flags);
 585        chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
 586                                                                & 0x0000000F;
 587        /* Setup DRAM */
 588        tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
 589        snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
 590                                                (tmp | DRAM_MODE_2)
 591                                                & ~WRITE_TRANS_START);
 592
 593        /* Enable IRQ output */
 594        snd_als300_set_irq_flag(chip, IRQ_ENABLE);
 595
 596        /* Unmute hardware devices so their outputs get routed to
 597         * the onboard mixer */
 598        tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
 599        snd_als300_gcr_write(chip->port, MISC_CONTROL,
 600                        tmp | VMUTE_NORMAL | MMUTE_NORMAL);
 601
 602        /* Reset volumes */
 603        snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
 604
 605        /* Make sure playback transfer is stopped */
 606        tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
 607        snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
 608                        tmp & ~TRANSFER_START);
 609        spin_unlock_irqrestore(&chip->reg_lock, flags);
 610}
 611
 612static int snd_als300_create(struct snd_card *card,
 613                             struct pci_dev *pci, int chip_type,
 614                             struct snd_als300 **rchip)
 615{
 616        struct snd_als300 *chip;
 617        void *irq_handler;
 618        int err;
 619
 620        static const struct snd_device_ops ops = {
 621                .dev_free = snd_als300_dev_free,
 622        };
 623        *rchip = NULL;
 624
 625        err = pci_enable_device(pci);
 626        if (err < 0)
 627                return err;
 628
 629        if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
 630                dev_err(card->dev, "error setting 28bit DMA mask\n");
 631                pci_disable_device(pci);
 632                return -ENXIO;
 633        }
 634        pci_set_master(pci);
 635
 636        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 637        if (chip == NULL) {
 638                pci_disable_device(pci);
 639                return -ENOMEM;
 640        }
 641
 642        chip->card = card;
 643        chip->pci = pci;
 644        chip->irq = -1;
 645        chip->chip_type = chip_type;
 646        spin_lock_init(&chip->reg_lock);
 647
 648        err = pci_request_regions(pci, "ALS300");
 649        if (err < 0) {
 650                kfree(chip);
 651                pci_disable_device(pci);
 652                return err;
 653        }
 654        chip->port = pci_resource_start(pci, 0);
 655
 656        if (chip->chip_type == DEVICE_ALS300_PLUS)
 657                irq_handler = snd_als300plus_interrupt;
 658        else
 659                irq_handler = snd_als300_interrupt;
 660
 661        if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
 662                        KBUILD_MODNAME, chip)) {
 663                dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
 664                snd_als300_free(chip);
 665                return -EBUSY;
 666        }
 667        chip->irq = pci->irq;
 668        card->sync_irq = chip->irq;
 669
 670        snd_als300_init(chip);
 671
 672        err = snd_als300_ac97(chip);
 673        if (err < 0) {
 674                dev_err(card->dev, "Could not create ac97\n");
 675                snd_als300_free(chip);
 676                return err;
 677        }
 678
 679        err = snd_als300_new_pcm(chip);
 680        if (err < 0) {
 681                dev_err(card->dev, "Could not create PCM\n");
 682                snd_als300_free(chip);
 683                return err;
 684        }
 685
 686        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 687        if (err < 0) {
 688                snd_als300_free(chip);
 689                return err;
 690        }
 691
 692        *rchip = chip;
 693        return 0;
 694}
 695
 696#ifdef CONFIG_PM_SLEEP
 697static int snd_als300_suspend(struct device *dev)
 698{
 699        struct snd_card *card = dev_get_drvdata(dev);
 700        struct snd_als300 *chip = card->private_data;
 701
 702        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 703        snd_ac97_suspend(chip->ac97);
 704        return 0;
 705}
 706
 707static int snd_als300_resume(struct device *dev)
 708{
 709        struct snd_card *card = dev_get_drvdata(dev);
 710        struct snd_als300 *chip = card->private_data;
 711
 712        snd_als300_init(chip);
 713        snd_ac97_resume(chip->ac97);
 714
 715        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 716        return 0;
 717}
 718
 719static SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
 720#define SND_ALS300_PM_OPS       &snd_als300_pm
 721#else
 722#define SND_ALS300_PM_OPS       NULL
 723#endif
 724
 725static int snd_als300_probe(struct pci_dev *pci,
 726                             const struct pci_device_id *pci_id)
 727{
 728        static int dev;
 729        struct snd_card *card;
 730        struct snd_als300 *chip;
 731        int err, chip_type;
 732
 733        if (dev >= SNDRV_CARDS)
 734                return -ENODEV;
 735        if (!enable[dev]) {
 736                dev++;
 737                return -ENOENT;
 738        }
 739
 740        err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 741                           0, &card);
 742
 743        if (err < 0)
 744                return err;
 745
 746        chip_type = pci_id->driver_data;
 747
 748        err = snd_als300_create(card, pci, chip_type, &chip);
 749        if (err < 0) {
 750                snd_card_free(card);
 751                return err;
 752        }
 753        card->private_data = chip;
 754
 755        strcpy(card->driver, "ALS300");
 756        if (chip->chip_type == DEVICE_ALS300_PLUS)
 757                /* don't know much about ALS300+ yet
 758                 * print revision number for now */
 759                sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
 760        else
 761                sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
 762                                                        chip->revision - 1);
 763        sprintf(card->longname, "%s at 0x%lx irq %i",
 764                                card->shortname, chip->port, chip->irq);
 765
 766        err = snd_card_register(card);
 767        if (err < 0) {
 768                snd_card_free(card);
 769                return err;
 770        }
 771        pci_set_drvdata(pci, card);
 772        dev++;
 773        return 0;
 774}
 775
 776static struct pci_driver als300_driver = {
 777        .name = KBUILD_MODNAME,
 778        .id_table = snd_als300_ids,
 779        .probe = snd_als300_probe,
 780        .remove = snd_als300_remove,
 781        .driver = {
 782                .pm = SND_ALS300_PM_OPS,
 783        },
 784};
 785
 786module_pci_driver(als300_driver);
 787