sound/pci/als4000.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
   4  *  Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
   5  *                        Jaroslav Kysela <perex@perex.cz>
   6  *  Copyright (C) 2002, 2008 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
   7  *
   8  *  Framework borrowed from Massimo Piccioni's card-als100.c.
   9  *
  10  * NOTES
  11  *
  12  *  Since Avance does not provide any meaningful documentation, and I
  13  *  bought an ALS4000 based soundcard, I was forced to base this driver
  14  *  on reverse engineering.
  15  *
  16  *  Note: this is no longer true (thank you!):
  17  *  pretty verbose chip docu (ALS4000a.PDF) can be found on the ALSA web site.
  18  *  Page numbers stated anywhere below with the "SPECS_PAGE:" tag
  19  *  refer to: ALS4000a.PDF specs Ver 1.0, May 28th, 1998.
  20  *
  21  *  The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
  22  *  ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport
  23  *  interface. These subsystems can be mapped into ISA io-port space,
  24  *  using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ
  25  *  services to the subsystems.
  26  *
  27  * While ALS4000 is very similar to a SoundBlaster, the differences in
  28  * DMA and capturing require more changes to the SoundBlaster than
  29  * desirable, so I made this separate driver.
  30  *
  31  * The ALS4000 can do real full duplex playback/capture.
  32  *
  33  * FMDAC:
  34  * - 0x4f -> port 0x14
  35  * - port 0x15 |= 1
  36  *
  37  * Enable/disable 3D sound:
  38  * - 0x50 -> port 0x14
  39  * - change bit 6 (0x40) of port 0x15
  40  *
  41  * Set QSound:
  42  * - 0xdb -> port 0x14
  43  * - set port 0x15:
  44  *   0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
  45  *
  46  * Set KSound:
  47  * - value -> some port 0x0c0d
  48  *
  49  * ToDo:
  50  * - by default, don't enable legacy game and use PCI game I/O
  51  * - power management? (card can do voice wakeup according to datasheet!!)
  52  */
  53
  54 #include <linux/io.h>
  55 #include <linux/init.h>
  56 #include <linux/pci.h>
  57 #include <linux/gameport.h>
  58 #include <linux/module.h>
  59 #include <linux/dma-mapping.h>
  60 #include <sound/core.h>
  61 #include <sound/pcm.h>
  62 #include <sound/rawmidi.h>
  63 #include <sound/mpu401.h>
  64 #include <sound/opl3.h>
  65 #include <sound/sb.h>
  66 #include <sound/initval.h>
  67
  68 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>, Andreas Mohr");
  69 MODULE_DESCRIPTION("Avance Logic ALS4000");
  70 MODULE_LICENSE("GPL");
  71 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
  72
  73 #if IS_REACHABLE(CONFIG_GAMEPORT)
  74 #define SUPPORT_JOYSTICK 1
  75 #endif
  76
  77 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  78 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  79 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  80 #ifdef SUPPORT_JOYSTICK
  81 static int joystick_port[SNDRV_CARDS];
  82 #endif
  83
  84 module_param_array(index, int, NULL, 0444);
  85 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
  86 module_param_array(id, charp, NULL, 0444);
  87 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
  88 module_param_array(enable, bool, NULL, 0444);
  89 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
  90 #ifdef SUPPORT_JOYSTICK
  91 module_param_hw_array(joystick_port, int, ioport, NULL, 0444);
  92 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
  93 #endif
  94
  95 struct snd_card_als4000 {
  96         /* most frequent access first */
  97         unsigned long iobase;
  98         struct pci_dev *pci;
  99         struct snd_sb *chip;
 100 #ifdef SUPPORT_JOYSTICK
 101         struct gameport *gameport;
 102 #endif
 103 };
 104
 105 static const struct pci_device_id snd_als4000_ids[] = {
 106         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 107         { 0, }
 108 };
 109
 110 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 111
 112 enum als4k_iobase_t {
 113         /* IOx: B == Byte, W = Word, D = DWord; SPECS_PAGE: 37 */
 114         ALS4K_IOD_00_AC97_ACCESS = 0x00,
 115         ALS4K_IOW_04_AC97_READ = 0x04,
 116         ALS4K_IOB_06_AC97_STATUS = 0x06,
 117         ALS4K_IOB_07_IRQSTATUS = 0x07,
 118         ALS4K_IOD_08_GCR_DATA = 0x08,
 119         ALS4K_IOB_0C_GCR_INDEX = 0x0c,
 120         ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU = 0x0e,
 121         ALS4K_IOB_10_ADLIB_ADDR0 = 0x10,
 122         ALS4K_IOB_11_ADLIB_ADDR1 = 0x11,
 123         ALS4K_IOB_12_ADLIB_ADDR2 = 0x12,
 124         ALS4K_IOB_13_ADLIB_ADDR3 = 0x13,
 125         ALS4K_IOB_14_MIXER_INDEX = 0x14,
 126         ALS4K_IOB_15_MIXER_DATA = 0x15,
 127         ALS4K_IOB_16_ESP_RESET = 0x16,
 128         ALS4K_IOB_16_ACK_FOR_CR1E = 0x16, /* 2nd function */
 129         ALS4K_IOB_18_OPL_ADDR0 = 0x18,
 130         ALS4K_IOB_19_OPL_ADDR1 = 0x19,
 131         ALS4K_IOB_1A_ESP_RD_DATA = 0x1a,
 132         ALS4K_IOB_1C_ESP_CMD_DATA = 0x1c,
 133         ALS4K_IOB_1C_ESP_WR_STATUS = 0x1c, /* 2nd function */
 134         ALS4K_IOB_1E_ESP_RD_STATUS8 = 0x1e,
 135         ALS4K_IOB_1F_ESP_RD_STATUS16 = 0x1f,
 136         ALS4K_IOB_20_ESP_GAMEPORT_200 = 0x20,
 137         ALS4K_IOB_21_ESP_GAMEPORT_201 = 0x21,
 138         ALS4K_IOB_30_MIDI_DATA = 0x30,
 139         ALS4K_IOB_31_MIDI_STATUS = 0x31,
 140         ALS4K_IOB_31_MIDI_COMMAND = 0x31, /* 2nd function */
 141 };
 142
 143 enum als4k_iobase_0e_t {
 144         ALS4K_IOB_0E_MPU_IRQ = 0x10,
 145         ALS4K_IOB_0E_CR1E_IRQ = 0x40,
 146         ALS4K_IOB_0E_SB_DMA_IRQ = 0x80,
 147 };
 148
 149 enum als4k_gcr_t { /* all registers 32bit wide; SPECS_PAGE: 38 to 42 */
 150         ALS4K_GCR8C_MISC_CTRL = 0x8c,
 151         ALS4K_GCR90_TEST_MODE_REG = 0x90,
 152         ALS4K_GCR91_DMA0_ADDR = 0x91,
 153         ALS4K_GCR92_DMA0_MODE_COUNT = 0x92,
 154         ALS4K_GCR93_DMA1_ADDR = 0x93,
 155         ALS4K_GCR94_DMA1_MODE_COUNT = 0x94,
 156         ALS4K_GCR95_DMA3_ADDR = 0x95,
 157         ALS4K_GCR96_DMA3_MODE_COUNT = 0x96,
 158         ALS4K_GCR99_DMA_EMULATION_CTRL = 0x99,
 159         ALS4K_GCRA0_FIFO1_CURRENT_ADDR = 0xa0,
 160         ALS4K_GCRA1_FIFO1_STATUS_BYTECOUNT = 0xa1,
 161         ALS4K_GCRA2_FIFO2_PCIADDR = 0xa2,
 162         ALS4K_GCRA3_FIFO2_COUNT = 0xa3,
 163         ALS4K_GCRA4_FIFO2_CURRENT_ADDR = 0xa4,
 164         ALS4K_GCRA5_FIFO1_STATUS_BYTECOUNT = 0xa5,
 165         ALS4K_GCRA6_PM_CTRL = 0xa6,
 166         ALS4K_GCRA7_PCI_ACCESS_STORAGE = 0xa7,
 167         ALS4K_GCRA8_LEGACY_CFG1 = 0xa8,
 168         ALS4K_GCRA9_LEGACY_CFG2 = 0xa9,
 169         ALS4K_GCRFF_DUMMY_SCRATCH = 0xff,
 170 };
 171
 172 enum als4k_gcr8c_t {
 173         ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE = 0x8000,
 174         ALS4K_GCR8C_CHIP_REV_MASK = 0xf0000
 175 };
 176
 177 static inline void snd_als4k_iobase_writeb(unsigned long iobase,
 178                                                 enum als4k_iobase_t reg,
 179                                                 u8 val)
 180 {
 181         outb(val, iobase + reg);
 182 }
 183
 184 static inline void snd_als4k_iobase_writel(unsigned long iobase,
 185                                                 enum als4k_iobase_t reg,
 186                                                 u32 val)
 187 {
 188         outl(val, iobase + reg);
 189 }
 190
 191 static inline u8 snd_als4k_iobase_readb(unsigned long iobase,
 192                                                 enum als4k_iobase_t reg)
 193 {
 194         return inb(iobase + reg);
 195 }
 196
 197 static inline u32 snd_als4k_iobase_readl(unsigned long iobase,
 198                                                 enum als4k_iobase_t reg)
 199 {
 200         return inl(iobase + reg);
 201 }
 202
 203 static inline void snd_als4k_gcr_write_addr(unsigned long iobase,
 204                                                  enum als4k_gcr_t reg,
 205                                                  u32 val)
 206 {
 207         snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
 208         snd_als4k_iobase_writel(iobase, ALS4K_IOD_08_GCR_DATA, val);
 209 }
 210
 211 static inline void snd_als4k_gcr_write(struct snd_sb *sb,
 212                                          enum als4k_gcr_t reg,
 213                                          u32 val)
 214 {
 215         snd_als4k_gcr_write_addr(sb->alt_port, reg, val);
 216 }
 217
 218 static inline u32 snd_als4k_gcr_read_addr(unsigned long iobase,
 219                                                  enum als4k_gcr_t reg)
 220 {
 221         /* SPECS_PAGE: 37/38 */
 222         snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
 223         return snd_als4k_iobase_readl(iobase, ALS4K_IOD_08_GCR_DATA);
 224 }
 225
 226 static inline u32 snd_als4k_gcr_read(struct snd_sb *sb, enum als4k_gcr_t reg)
 227 {
 228         return snd_als4k_gcr_read_addr(sb->alt_port, reg);
 229 }
 230
 231 enum als4k_cr_t { /* all registers 8bit wide; SPECS_PAGE: 20 to 23 */
 232         ALS4K_CR0_SB_CONFIG = 0x00,
 233         ALS4K_CR2_MISC_CONTROL = 0x02,
 234         ALS4K_CR3_CONFIGURATION = 0x03,
 235         ALS4K_CR17_FIFO_STATUS = 0x17,
 236         ALS4K_CR18_ESP_MAJOR_VERSION = 0x18,
 237         ALS4K_CR19_ESP_MINOR_VERSION = 0x19,
 238         ALS4K_CR1A_MPU401_UART_MODE_CONTROL = 0x1a,
 239         ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO = 0x1c,
 240         ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI = 0x1d,
 241         ALS4K_CR1E_FIFO2_CONTROL = 0x1e, /* secondary PCM FIFO (recording) */
 242         ALS4K_CR3A_MISC_CONTROL = 0x3a,
 243         ALS4K_CR3B_CRC32_BYTE0 = 0x3b, /* for testing, activate via CR3A */
 244         ALS4K_CR3C_CRC32_BYTE1 = 0x3c,
 245         ALS4K_CR3D_CRC32_BYTE2 = 0x3d,
 246         ALS4K_CR3E_CRC32_BYTE3 = 0x3e,
 247 };
 248
 249 enum als4k_cr0_t {
 250         ALS4K_CR0_DMA_CONTIN_MODE_CTRL = 0x02, /* IRQ/FIFO controlled for 0/1 */
 251         ALS4K_CR0_DMA_90H_MODE_CTRL = 0x04, /* IRQ/FIFO controlled for 0/1 */
 252         ALS4K_CR0_MX80_81_REG_WRITE_ENABLE = 0x80,
 253 };
 254
 255 static inline void snd_als4_cr_write(struct snd_sb *chip,
 256                                         enum als4k_cr_t reg,
 257                                         u8 data)
 258 {
 259         /* Control Register is reg | 0xc0 (bit 7, 6 set) on sbmixer_index
 260          * NOTE: assumes chip->mixer_lock to be locked externally already!
 261          * SPECS_PAGE: 6 */
 262         snd_sbmixer_write(chip, reg | 0xc0, data);
 263 }
 264
 265 static inline u8 snd_als4_cr_read(struct snd_sb *chip,
 266                                         enum als4k_cr_t reg)
 267 {
 268         /* NOTE: assumes chip->mixer_lock to be locked externally already! */
 269         return snd_sbmixer_read(chip, reg | 0xc0);
 270 }
 271
 272
 273
 274 static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate)
 275 {
 276         if (!(chip->mode & SB_RATE_LOCK)) {
 277                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 278                 snd_sbdsp_command(chip, rate>>8);
 279                 snd_sbdsp_command(chip, rate);
 280         }
 281 }
 282
 283 static inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
 284                                                dma_addr_t addr, unsigned size)
 285 {
 286         /* SPECS_PAGE: 40 */
 287         snd_als4k_gcr_write(chip, ALS4K_GCRA2_FIFO2_PCIADDR, addr);
 288         snd_als4k_gcr_write(chip, ALS4K_GCRA3_FIFO2_COUNT, (size-1));
 289 }
 290
 291 static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
 292                                                 dma_addr_t addr,
 293                                                 unsigned size)
 294 {
 295         /* SPECS_PAGE: 38 */
 296         snd_als4k_gcr_write(chip, ALS4K_GCR91_DMA0_ADDR, addr);
 297         snd_als4k_gcr_write(chip, ALS4K_GCR92_DMA0_MODE_COUNT,
 298                                                         (size-1)|0x180000);
 299 }
 300
 301 #define ALS4000_FORMAT_SIGNED   (1<<0)
 302 #define ALS4000_FORMAT_16BIT    (1<<1)
 303 #define ALS4000_FORMAT_STEREO   (1<<2)
 304
 305 static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
 306 {
 307         int result;
 308
 309         result = 0;
 310         if (snd_pcm_format_signed(runtime->format))
 311                 result |= ALS4000_FORMAT_SIGNED;
 312         if (snd_pcm_format_physical_width(runtime->format) == 16)
 313                 result |= ALS4000_FORMAT_16BIT;
 314         if (runtime->channels > 1)
 315                 result |= ALS4000_FORMAT_STEREO;
 316         return result;
 317 }
 318
 319 /* structure for setting up playback */
 320 static const struct {
 321         unsigned char dsp_cmd, dma_on, dma_off, format;
 322 } playback_cmd_vals[]={
 323 /* ALS4000_FORMAT_U8_MONO */
 324 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 325 /* ALS4000_FORMAT_S8_MONO */
 326 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 327 /* ALS4000_FORMAT_U16L_MONO */
 328 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 329 /* ALS4000_FORMAT_S16L_MONO */
 330 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 331 /* ALS4000_FORMAT_U8_STEREO */
 332 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 333 /* ALS4000_FORMAT_S8_STEREO */
 334 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 335 /* ALS4000_FORMAT_U16L_STEREO */
 336 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 337 /* ALS4000_FORMAT_S16L_STEREO */
 338 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 339 };
 340 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 341
 342 /* structure for setting up capture */
 343 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 344 static const unsigned char capture_cmd_vals[]=
 345 {
 346 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 347 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */
 348 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 349 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 350 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 351 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */
 352 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 353 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 354 };
 355 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 356
 357 static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
 358 {
 359         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 360         struct snd_pcm_runtime *runtime = substream->runtime;
 361         unsigned long size;
 362         unsigned count;
 363
 364         chip->capture_format = snd_als4000_get_format(runtime);
 365
 366         size = snd_pcm_lib_buffer_bytes(substream);
 367         count = snd_pcm_lib_period_bytes(substream);
 368
 369         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 370                 count >>= 1;
 371         count--;
 372
 373         spin_lock_irq(&chip->reg_lock);
 374         snd_als4000_set_rate(chip, runtime->rate);
 375         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 376         spin_unlock_irq(&chip->reg_lock);
 377         spin_lock_irq(&chip->mixer_lock);
 378         snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
 379         snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
 380         spin_unlock_irq(&chip->mixer_lock);
 381         return 0;
 382 }
 383
 384 static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
 385 {
 386         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 387         struct snd_pcm_runtime *runtime = substream->runtime;
 388         unsigned long size;
 389         unsigned count;
 390
 391         chip->playback_format = snd_als4000_get_format(runtime);
 392
 393         size = snd_pcm_lib_buffer_bytes(substream);
 394         count = snd_pcm_lib_period_bytes(substream);
 395
 396         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 397                 count >>= 1;
 398         count--;
 399
 400         /* FIXME: from second playback on, there's a lot more clicks and pops
 401          * involved here than on first playback. Fiddling with
 402          * tons of different settings didn't help (DMA, speaker on/off,
 403          * reordering, ...). Something seems to get enabled on playback
 404          * that I haven't found out how to disable again, which then causes
 405          * the switching pops to reach the speakers the next time here. */
 406         spin_lock_irq(&chip->reg_lock);
 407         snd_als4000_set_rate(chip, runtime->rate);
 408         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 409
 410         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 411         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 412         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 413         snd_sbdsp_command(chip, playback_cmd(chip).format);
 414         snd_sbdsp_command(chip, count & 0xff);
 415         snd_sbdsp_command(chip, count >> 8);
 416         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 417         spin_unlock_irq(&chip->reg_lock);
 418
 419         return 0;
 420 }
 421
 422 static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 423 {
 424         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 425         int result = 0;
 426
 427         /* FIXME race condition in here!!!
 428            chip->mode non-atomic update gets consistently protected
 429            by reg_lock always, _except_ for this place!!
 430            Probably need to take reg_lock as outer (or inner??) lock, too.
 431            (or serialize both lock operations? probably not, though... - racy?)
 432         */
 433         spin_lock(&chip->mixer_lock);
 434         switch (cmd) {
 435         case SNDRV_PCM_TRIGGER_START:
 436         case SNDRV_PCM_TRIGGER_RESUME:
 437                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 438                 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 439                                                          capture_cmd(chip));
 440                 break;
 441         case SNDRV_PCM_TRIGGER_STOP:
 442         case SNDRV_PCM_TRIGGER_SUSPEND:
 443                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 444                 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 445                                                          capture_cmd(chip));
 446                 break;
 447         default:
 448                 result = -EINVAL;
 449                 break;
 450         }
 451         spin_unlock(&chip->mixer_lock);
 452         return result;
 453 }
 454
 455 static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 456 {
 457         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 458         int result = 0;
 459
 460         spin_lock(&chip->reg_lock);
 461         switch (cmd) {
 462         case SNDRV_PCM_TRIGGER_START:
 463         case SNDRV_PCM_TRIGGER_RESUME:
 464                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 465                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 466                 break;
 467         case SNDRV_PCM_TRIGGER_STOP:
 468         case SNDRV_PCM_TRIGGER_SUSPEND:
 469                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 470                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 471                 break;
 472         default:
 473                 result = -EINVAL;
 474                 break;
 475         }
 476         spin_unlock(&chip->reg_lock);
 477         return result;
 478 }
 479
 480 static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
 481 {
 482         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 483         unsigned int result;
 484
 485         spin_lock(&chip->reg_lock);
 486         result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
 487         spin_unlock(&chip->reg_lock);
 488         result &= 0xffff;
 489         return bytes_to_frames( substream->runtime, result );
 490 }
 491
 492 static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
 493 {
 494         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 495         unsigned result;
 496
 497         spin_lock(&chip->reg_lock);
 498         result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
 499         spin_unlock(&chip->reg_lock);
 500         result &= 0xffff;
 501         return bytes_to_frames( substream->runtime, result );
 502 }
 503
 504 /* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
 505  * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
 506  * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
 507  * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
 508  * register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something
 509  * could be optimized here to query/write one register only...
 510  * And even if both registers need to be queried, then there's still the
 511  * question of whether it's actually correct to ACK PCI IRQ before reading
 512  * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
 513  * SB IRQ status.
 514  * (hmm, SPECS_PAGE: 38 mentions it the other way around!)
 515  * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
 516  * */
 517 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
 518 {
 519         struct snd_sb *chip = dev_id;
 520         unsigned pci_irqstatus;
 521         unsigned sb_irqstatus;
 522
 523         /* find out which bit of the ALS4000 PCI block produced the interrupt,
 524            SPECS_PAGE: 38, 5 */
 525         pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port,
 526                                  ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU);
 527         if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ)
 528          && (chip->playback_substream)) /* playback */
 529                 snd_pcm_period_elapsed(chip->playback_substream);
 530         if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ)
 531          && (chip->capture_substream)) /* capturing */
 532                 snd_pcm_period_elapsed(chip->capture_substream);
 533         if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ)
 534          && (chip->rmidi)) /* MPU401 interrupt */
 535                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 536         /* ACK the PCI block IRQ */
 537         snd_als4k_iobase_writeb(chip->alt_port,
 538                          ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
 539
 540         spin_lock(&chip->mixer_lock);
 541         /* SPECS_PAGE: 20 */
 542         sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 543         spin_unlock(&chip->mixer_lock);
 544
 545         if (sb_irqstatus & SB_IRQTYPE_8BIT)
 546                 snd_sb_ack_8bit(chip);
 547         if (sb_irqstatus & SB_IRQTYPE_16BIT)
 548                 snd_sb_ack_16bit(chip);
 549         if (sb_irqstatus & SB_IRQTYPE_MPUIN)
 550                 inb(chip->mpu_port);
 551         if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA)
 552                 snd_als4k_iobase_readb(chip->alt_port,
 553                                         ALS4K_IOB_16_ACK_FOR_CR1E);
 554
 555         /* dev_dbg(chip->card->dev, "als4000: irq 0x%04x 0x%04x\n",
 556                                          pci_irqstatus, sb_irqstatus); */
 557
 558         /* only ack the things we actually handled above */
 559         return IRQ_RETVAL(
 560              (pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ|ALS4K_IOB_0E_CR1E_IRQ|
 561                                 ALS4K_IOB_0E_MPU_IRQ))
 562           || (sb_irqstatus & (SB_IRQTYPE_8BIT|SB_IRQTYPE_16BIT|
 563                                 SB_IRQTYPE_MPUIN|ALS4K_IRQTYPE_CR1E_DMA))
 564         );
 565 }
 566
 567 /*****************************************************************/
 568
 569 static const struct snd_pcm_hardware snd_als4000_playback =
 570 {
 571         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 572                                  SNDRV_PCM_INFO_MMAP_VALID),
 573         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 574                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 575         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 576         .rate_min =             4000,
 577         .rate_max =             48000,
 578         .channels_min =         1,
 579         .channels_max =         2,
 580         .buffer_bytes_max =     65536,
 581         .period_bytes_min =     64,
 582         .period_bytes_max =     65536,
 583         .periods_min =          1,
 584         .periods_max =          1024,
 585         .fifo_size =            0
 586 };
 587
 588 static const struct snd_pcm_hardware snd_als4000_capture =
 589 {
 590         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 591                                  SNDRV_PCM_INFO_MMAP_VALID),
 592         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 593                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 594         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 595         .rate_min =             4000,
 596         .rate_max =             48000,
 597         .channels_min =         1,
 598         .channels_max =         2,
 599         .buffer_bytes_max =     65536,
 600         .period_bytes_min =     64,
 601         .period_bytes_max =     65536,
 602         .periods_min =          1,
 603         .periods_max =          1024,
 604         .fifo_size =            0
 605 };
 606
 607 /*****************************************************************/
 608
 609 static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
 610 {
 611         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 612         struct snd_pcm_runtime *runtime = substream->runtime;
 613
 614         chip->playback_substream = substream;
 615         runtime->hw = snd_als4000_playback;
 616         return 0;
 617 }
 618
 619 static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
 620 {
 621         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 622
 623         chip->playback_substream = NULL;
 624         return 0;
 625 }
 626
 627 static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
 628 {
 629         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 630         struct snd_pcm_runtime *runtime = substream->runtime;
 631
 632         chip->capture_substream = substream;
 633         runtime->hw = snd_als4000_capture;
 634         return 0;
 635 }
 636
 637 static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
 638 {
 639         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 640
 641         chip->capture_substream = NULL;
 642         return 0;
 643 }
 644
 645 /******************************************************************/
 646
 647 static const struct snd_pcm_ops snd_als4000_playback_ops = {
 648         .open =         snd_als4000_playback_open,
 649         .close =        snd_als4000_playback_close,
 650         .prepare =      snd_als4000_playback_prepare,
 651         .trigger =      snd_als4000_playback_trigger,
 652         .pointer =      snd_als4000_playback_pointer
 653 };
 654
 655 static const struct snd_pcm_ops snd_als4000_capture_ops = {
 656         .open =         snd_als4000_capture_open,
 657         .close =        snd_als4000_capture_close,
 658         .prepare =      snd_als4000_capture_prepare,
 659         .trigger =      snd_als4000_capture_trigger,
 660         .pointer =      snd_als4000_capture_pointer
 661 };
 662
 663 static int snd_als4000_pcm(struct snd_sb *chip, int device)
 664 {
 665         struct snd_pcm *pcm;
 666         int err;
 667
 668         err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm);
 669         if (err < 0)
 670                 return err;
 671         pcm->private_data = chip;
 672         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 673         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 674         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 675
 676         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
 677                                        &chip->pci->dev, 64*1024, 64*1024);
 678
 679         chip->pcm = pcm;
 680
 681         return 0;
 682 }
 683
 684 /******************************************************************/
 685
 686 static void snd_als4000_set_addr(unsigned long iobase,
 687                                         unsigned int sb_io,
 688                                         unsigned int mpu_io,
 689                                         unsigned int opl_io,
 690                                         unsigned int game_io)
 691 {
 692         u32 cfg1 = 0;
 693         u32 cfg2 = 0;
 694
 695         if (mpu_io > 0)
 696                 cfg2 |= (mpu_io | 1) << 16;
 697         if (sb_io > 0)
 698                 cfg2 |= (sb_io | 1);
 699         if (game_io > 0)
 700                 cfg1 |= (game_io | 1) << 16;
 701         if (opl_io > 0)
 702                 cfg1 |= (opl_io | 1);
 703         snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1);
 704         snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2);
 705 }
 706
 707 static void snd_als4000_configure(struct snd_sb *chip)
 708 {
 709         u8 tmp;
 710         int i;
 711
 712         /* do some more configuration */
 713         spin_lock_irq(&chip->mixer_lock);
 714         tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
 715         snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 716                                 tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 717         /* always select DMA channel 0, since we do not actually use DMA
 718          * SPECS_PAGE: 19/20 */
 719         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 720         snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 721                                  tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 722         spin_unlock_irq(&chip->mixer_lock);
 723
 724         spin_lock_irq(&chip->reg_lock);
 725         /* enable interrupts */
 726         snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
 727                                         ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
 728
 729         /* SPECS_PAGE: 39 */
 730         for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i)
 731                 snd_als4k_gcr_write(chip, i, 0);
 732         /* enable burst mode to prevent dropouts during high PCI bus usage */
 733         snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
 734                 (snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04);
 735         spin_unlock_irq(&chip->reg_lock);
 736 }
 737
 738 #ifdef SUPPORT_JOYSTICK
 739 static int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
 740 {
 741         struct gameport *gp;
 742         struct resource *r;
 743         int io_port;
 744
 745         if (joystick_port[dev] == 0)
 746                 return -ENODEV;
 747
 748         if (joystick_port[dev] == 1) { /* auto-detect */
 749                 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
 750                         r = request_region(io_port, 8, "ALS4000 gameport");
 751                         if (r)
 752                                 break;
 753                 }
 754         } else {
 755                 io_port = joystick_port[dev];
 756                 r = request_region(io_port, 8, "ALS4000 gameport");
 757         }
 758
 759         if (!r) {
 760                 dev_warn(&acard->pci->dev, "cannot reserve joystick ports\n");
 761                 return -EBUSY;
 762         }
 763
 764         acard->gameport = gp = gameport_allocate_port();
 765         if (!gp) {
 766                 dev_err(&acard->pci->dev, "cannot allocate memory for gameport\n");
 767                 release_and_free_resource(r);
 768                 return -ENOMEM;
 769         }
 770
 771         gameport_set_name(gp, "ALS4000 Gameport");
 772         gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
 773         gameport_set_dev_parent(gp, &acard->pci->dev);
 774         gp->io = io_port;
 775         gameport_set_port_data(gp, r);
 776
 777         /* Enable legacy joystick port */
 778         snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
 779
 780         gameport_register_port(acard->gameport);
 781
 782         return 0;
 783 }
 784
 785 static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
 786 {
 787         if (acard->gameport) {
 788                 struct resource *r = gameport_get_port_data(acard->gameport);
 789
 790                 gameport_unregister_port(acard->gameport);
 791                 acard->gameport = NULL;
 792
 793                 /* disable joystick */
 794                 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
 795
 796                 release_and_free_resource(r);
 797         }
 798 }
 799 #else
 800 static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
 801 static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
 802 #endif
 803
 804 static void snd_card_als4000_free( struct snd_card *card )
 805 {
 806         struct snd_card_als4000 *acard = card->private_data;
 807
 808         /* make sure that interrupts are disabled */
 809         snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0);
 810         /* free resources */
 811         snd_als4000_free_gameport(acard);
 812         pci_release_regions(acard->pci);
 813         pci_disable_device(acard->pci);
 814 }
 815
 816 static int snd_card_als4000_probe(struct pci_dev *pci,
 817                                   const struct pci_device_id *pci_id)
 818 {
 819         static int dev;
 820         struct snd_card *card;
 821         struct snd_card_als4000 *acard;
 822         unsigned long iobase;
 823         struct snd_sb *chip;
 824         struct snd_opl3 *opl3;
 825         unsigned short word;
 826         int err;
 827
 828         if (dev >= SNDRV_CARDS)
 829                 return -ENODEV;
 830         if (!enable[dev]) {
 831                 dev++;
 832                 return -ENOENT;
 833         }
 834
 835         /* enable PCI device */
 836         if ((err = pci_enable_device(pci)) < 0) {
 837                 return err;
 838         }
 839         /* check, if we can restrict PCI DMA transfers to 24 bits */
 840         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(24)) < 0 ||
 841             dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(24)) < 0) {
 842                 dev_err(&pci->dev, "architecture does not support 24bit PCI busmaster DMA\n");
 843                 pci_disable_device(pci);
 844                 return -ENXIO;
 845         }
 846
 847         if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 848                 pci_disable_device(pci);
 849                 return err;
 850         }
 851         iobase = pci_resource_start(pci, 0);
 852
 853         pci_read_config_word(pci, PCI_COMMAND, &word);
 854         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 855         pci_set_master(pci);
 856
 857         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 858                            sizeof(*acard) /* private_data: acard */,
 859                            &card);
 860         if (err < 0) {
 861                 pci_release_regions(pci);
 862                 pci_disable_device(pci);
 863                 return err;
 864         }
 865
 866         acard = card->private_data;
 867         acard->pci = pci;
 868         acard->iobase = iobase;
 869         card->private_free = snd_card_als4000_free;
 870
 871         /* disable all legacy ISA stuff */
 872         snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
 873
 874         if ((err = snd_sbdsp_create(card,
 875                                     iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 876                                     pci->irq,
 877                 /* internally registered as IRQF_SHARED in case of ALS4000 SB */
 878                                     snd_als4000_interrupt,
 879                                     -1,
 880                                     -1,
 881                                     SB_HW_ALS4000,
 882                                     &chip)) < 0) {
 883                 goto out_err;
 884         }
 885         acard->chip = chip;
 886
 887         chip->pci = pci;
 888         chip->alt_port = iobase;
 889
 890         snd_als4000_configure(chip);
 891
 892         strcpy(card->driver, "ALS4000");
 893         strcpy(card->shortname, "Avance Logic ALS4000");
 894         sprintf(card->longname, "%s at 0x%lx, irq %i",
 895                 card->shortname, chip->alt_port, chip->irq);
 896
 897         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 898                                         iobase + ALS4K_IOB_30_MIDI_DATA,
 899                                         MPU401_INFO_INTEGRATED |
 900                                         MPU401_INFO_IRQ_HOOK,
 901                                         -1, &chip->rmidi)) < 0) {
 902                 dev_err(&pci->dev, "no MPU-401 device at 0x%lx?\n",
 903                                 iobase + ALS4K_IOB_30_MIDI_DATA);
 904                 goto out_err;
 905         }
 906         /* FIXME: ALS4000 has interesting MPU401 configuration features
 907          * at ALS4K_CR1A_MPU401_UART_MODE_CONTROL
 908          * (pass-thru / UART switching, fast MIDI clock, etc.),
 909          * however there doesn't seem to be an ALSA API for this...
 910          * SPECS_PAGE: 21 */
 911
 912         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 913                 goto out_err;
 914         }
 915         if ((err = snd_sbmixer_new(chip)) < 0) {
 916                 goto out_err;
 917         }
 918
 919         if (snd_opl3_create(card,
 920                                 iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 921                                 iobase + ALS4K_IOB_12_ADLIB_ADDR2,
 922                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 923                 dev_err(&pci->dev, "no OPL device at 0x%lx-0x%lx?\n",
 924                            iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 925                            iobase + ALS4K_IOB_12_ADLIB_ADDR2);
 926         } else {
 927                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 928                         goto out_err;
 929                 }
 930         }
 931
 932         snd_als4000_create_gameport(acard, dev);
 933
 934         if ((err = snd_card_register(card)) < 0) {
 935                 goto out_err;
 936         }
 937         pci_set_drvdata(pci, card);
 938         dev++;
 939         err = 0;
 940         goto out;
 941
 942 out_err:
 943         snd_card_free(card);
 944
 945 out:
 946         return err;
 947 }
 948
 949 static void snd_card_als4000_remove(struct pci_dev *pci)
 950 {
 951         snd_card_free(pci_get_drvdata(pci));
 952 }
 953
 954 #ifdef CONFIG_PM_SLEEP
 955 static int snd_als4000_suspend(struct device *dev)
 956 {
 957         struct snd_card *card = dev_get_drvdata(dev);
 958         struct snd_card_als4000 *acard = card->private_data;
 959         struct snd_sb *chip = acard->chip;
 960
 961         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 962
 963         snd_sbmixer_suspend(chip);
 964         return 0;
 965 }
 966
 967 static int snd_als4000_resume(struct device *dev)
 968 {
 969         struct snd_card *card = dev_get_drvdata(dev);
 970         struct snd_card_als4000 *acard = card->private_data;
 971         struct snd_sb *chip = acard->chip;
 972
 973         snd_als4000_configure(chip);
 974         snd_sbdsp_reset(chip);
 975         snd_sbmixer_resume(chip);
 976
 977 #ifdef SUPPORT_JOYSTICK
 978         if (acard->gameport)
 979                 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
 980 #endif
 981
 982         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 983         return 0;
 984 }
 985
 986 static SIMPLE_DEV_PM_OPS(snd_als4000_pm, snd_als4000_suspend, snd_als4000_resume);
 987 #define SND_ALS4000_PM_OPS      &snd_als4000_pm
 988 #else
 989 #define SND_ALS4000_PM_OPS      NULL
 990 #endif /* CONFIG_PM_SLEEP */
 991
 992 static struct pci_driver als4000_driver = {
 993         .name = KBUILD_MODNAME,
 994         .id_table = snd_als4000_ids,
 995         .probe = snd_card_als4000_probe,
 996         .remove = snd_card_als4000_remove,
 997         .driver = {
 998                 .pm = SND_ALS4000_PM_OPS,
 999         },
1000 };
1001
1002 module_pci_driver(als4000_driver);