sound/pci/als4000.c

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This source file includes following definitions.
snd_als4k_iobase_writeb
snd_als4k_iobase_writel
snd_als4k_iobase_readb
snd_als4k_iobase_readl
snd_als4k_gcr_write_addr
snd_als4k_gcr_write
snd_als4k_gcr_read_addr
snd_als4k_gcr_read
snd_als4_cr_write
snd_als4_cr_read
snd_als4000_set_rate
snd_als4000_set_capture_dma
snd_als4000_set_playback_dma
snd_als4000_get_format
snd_als4000_hw_params
snd_als4000_hw_free
snd_als4000_capture_prepare
snd_als4000_playback_prepare
snd_als4000_capture_trigger
snd_als4000_playback_trigger
snd_als4000_capture_pointer
snd_als4000_playback_pointer
snd_als4000_interrupt
snd_als4000_playback_open
snd_als4000_playback_close
snd_als4000_capture_open
snd_als4000_capture_close
snd_als4000_pcm
snd_als4000_set_addr
snd_als4000_configure
snd_als4000_create_gameport
snd_als4000_free_gameport
snd_als4000_create_gameport
snd_als4000_free_gameport
snd_card_als4000_free
snd_card_als4000_probe
snd_card_als4000_remove
snd_als4000_suspend
snd_als4000_resume
   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_hw_params(struct snd_pcm_substream *substream,
 358                                  struct snd_pcm_hw_params *hw_params)
 359 {
 360         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 361 }
 362 
 363 static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
 364 {
 365         snd_pcm_lib_free_pages(substream);
 366         return 0;
 367 }
 368 
 369 static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
 370 {
 371         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 372         struct snd_pcm_runtime *runtime = substream->runtime;
 373         unsigned long size;
 374         unsigned count;
 375 
 376         chip->capture_format = snd_als4000_get_format(runtime);
 377                 
 378         size = snd_pcm_lib_buffer_bytes(substream);
 379         count = snd_pcm_lib_period_bytes(substream);
 380         
 381         if (chip->capture_format & ALS4000_FORMAT_16BIT)
 382                 count >>= 1;
 383         count--;
 384 
 385         spin_lock_irq(&chip->reg_lock);
 386         snd_als4000_set_rate(chip, runtime->rate);
 387         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 388         spin_unlock_irq(&chip->reg_lock);
 389         spin_lock_irq(&chip->mixer_lock);
 390         snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
 391         snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
 392         spin_unlock_irq(&chip->mixer_lock);
 393         return 0;
 394 }
 395 
 396 static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
 397 {
 398         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 399         struct snd_pcm_runtime *runtime = substream->runtime;
 400         unsigned long size;
 401         unsigned count;
 402 
 403         chip->playback_format = snd_als4000_get_format(runtime);
 404         
 405         size = snd_pcm_lib_buffer_bytes(substream);
 406         count = snd_pcm_lib_period_bytes(substream);
 407         
 408         if (chip->playback_format & ALS4000_FORMAT_16BIT)
 409                 count >>= 1;
 410         count--;
 411         
 412         /* FIXME: from second playback on, there's a lot more clicks and pops
 413          * involved here than on first playback. Fiddling with
 414          * tons of different settings didn't help (DMA, speaker on/off,
 415          * reordering, ...). Something seems to get enabled on playback
 416          * that I haven't found out how to disable again, which then causes
 417          * the switching pops to reach the speakers the next time here. */
 418         spin_lock_irq(&chip->reg_lock);
 419         snd_als4000_set_rate(chip, runtime->rate);
 420         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 421         
 422         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 423         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 424         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 425         snd_sbdsp_command(chip, playback_cmd(chip).format);
 426         snd_sbdsp_command(chip, count & 0xff);
 427         snd_sbdsp_command(chip, count >> 8);
 428         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);    
 429         spin_unlock_irq(&chip->reg_lock);
 430         
 431         return 0;
 432 }
 433 
 434 static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 435 {
 436         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 437         int result = 0;
 438         
 439         /* FIXME race condition in here!!!
 440            chip->mode non-atomic update gets consistently protected
 441            by reg_lock always, _except_ for this place!!
 442            Probably need to take reg_lock as outer (or inner??) lock, too.
 443            (or serialize both lock operations? probably not, though... - racy?)
 444         */
 445         spin_lock(&chip->mixer_lock);
 446         switch (cmd) {
 447         case SNDRV_PCM_TRIGGER_START:
 448         case SNDRV_PCM_TRIGGER_RESUME:
 449                 chip->mode |= SB_RATE_LOCK_CAPTURE;
 450                 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 451                                                          capture_cmd(chip));
 452                 break;
 453         case SNDRV_PCM_TRIGGER_STOP:
 454         case SNDRV_PCM_TRIGGER_SUSPEND:
 455                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 456                 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 457                                                          capture_cmd(chip));
 458                 break;
 459         default:
 460                 result = -EINVAL;
 461                 break;
 462         }
 463         spin_unlock(&chip->mixer_lock);
 464         return result;
 465 }
 466 
 467 static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 468 {
 469         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 470         int result = 0;
 471 
 472         spin_lock(&chip->reg_lock);
 473         switch (cmd) {
 474         case SNDRV_PCM_TRIGGER_START:
 475         case SNDRV_PCM_TRIGGER_RESUME:
 476                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
 477                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 478                 break;
 479         case SNDRV_PCM_TRIGGER_STOP:
 480         case SNDRV_PCM_TRIGGER_SUSPEND:
 481                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 482                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 483                 break;
 484         default:
 485                 result = -EINVAL;
 486                 break;
 487         }
 488         spin_unlock(&chip->reg_lock);
 489         return result;
 490 }
 491 
 492 static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
 493 {
 494         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 495         unsigned int result;
 496 
 497         spin_lock(&chip->reg_lock);     
 498         result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
 499         spin_unlock(&chip->reg_lock);
 500         result &= 0xffff;
 501         return bytes_to_frames( substream->runtime, result );
 502 }
 503 
 504 static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
 505 {
 506         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 507         unsigned result;
 508 
 509         spin_lock(&chip->reg_lock);     
 510         result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
 511         spin_unlock(&chip->reg_lock);
 512         result &= 0xffff;
 513         return bytes_to_frames( substream->runtime, result );
 514 }
 515 
 516 /* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
 517  * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
 518  * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
 519  * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
 520  * register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something
 521  * could be optimized here to query/write one register only...
 522  * And even if both registers need to be queried, then there's still the
 523  * question of whether it's actually correct to ACK PCI IRQ before reading
 524  * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
 525  * SB IRQ status.
 526  * (hmm, SPECS_PAGE: 38 mentions it the other way around!)
 527  * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
 528  * */
 529 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
 530 {
 531         struct snd_sb *chip = dev_id;
 532         unsigned pci_irqstatus;
 533         unsigned sb_irqstatus;
 534 
 535         /* find out which bit of the ALS4000 PCI block produced the interrupt,
 536            SPECS_PAGE: 38, 5 */
 537         pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port,
 538                                  ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU);
 539         if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ)
 540          && (chip->playback_substream)) /* playback */
 541                 snd_pcm_period_elapsed(chip->playback_substream);
 542         if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ)
 543          && (chip->capture_substream)) /* capturing */
 544                 snd_pcm_period_elapsed(chip->capture_substream);
 545         if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ)
 546          && (chip->rmidi)) /* MPU401 interrupt */
 547                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 548         /* ACK the PCI block IRQ */
 549         snd_als4k_iobase_writeb(chip->alt_port,
 550                          ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
 551         
 552         spin_lock(&chip->mixer_lock);
 553         /* SPECS_PAGE: 20 */
 554         sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 555         spin_unlock(&chip->mixer_lock);
 556         
 557         if (sb_irqstatus & SB_IRQTYPE_8BIT)
 558                 snd_sb_ack_8bit(chip);
 559         if (sb_irqstatus & SB_IRQTYPE_16BIT)
 560                 snd_sb_ack_16bit(chip);
 561         if (sb_irqstatus & SB_IRQTYPE_MPUIN)
 562                 inb(chip->mpu_port);
 563         if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA)
 564                 snd_als4k_iobase_readb(chip->alt_port,
 565                                         ALS4K_IOB_16_ACK_FOR_CR1E);
 566 
 567         /* dev_dbg(chip->card->dev, "als4000: irq 0x%04x 0x%04x\n",
 568                                          pci_irqstatus, sb_irqstatus); */
 569 
 570         /* only ack the things we actually handled above */
 571         return IRQ_RETVAL(
 572              (pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ|ALS4K_IOB_0E_CR1E_IRQ|
 573                                 ALS4K_IOB_0E_MPU_IRQ))
 574           || (sb_irqstatus & (SB_IRQTYPE_8BIT|SB_IRQTYPE_16BIT|
 575                                 SB_IRQTYPE_MPUIN|ALS4K_IRQTYPE_CR1E_DMA))
 576         );
 577 }
 578 
 579 /*****************************************************************/
 580 
 581 static const struct snd_pcm_hardware snd_als4000_playback =
 582 {
 583         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 584                                  SNDRV_PCM_INFO_MMAP_VALID),
 585         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 586                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 587         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 588         .rate_min =             4000,
 589         .rate_max =             48000,
 590         .channels_min =         1,
 591         .channels_max =         2,
 592         .buffer_bytes_max =     65536,
 593         .period_bytes_min =     64,
 594         .period_bytes_max =     65536,
 595         .periods_min =          1,
 596         .periods_max =          1024,
 597         .fifo_size =            0
 598 };
 599 
 600 static const struct snd_pcm_hardware snd_als4000_capture =
 601 {
 602         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 603                                  SNDRV_PCM_INFO_MMAP_VALID),
 604         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 605                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 606         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 607         .rate_min =             4000,
 608         .rate_max =             48000,
 609         .channels_min =         1,
 610         .channels_max =         2,
 611         .buffer_bytes_max =     65536,
 612         .period_bytes_min =     64,
 613         .period_bytes_max =     65536,
 614         .periods_min =          1,
 615         .periods_max =          1024,
 616         .fifo_size =            0
 617 };
 618 
 619 /*****************************************************************/
 620 
 621 static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
 622 {
 623         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 624         struct snd_pcm_runtime *runtime = substream->runtime;
 625 
 626         chip->playback_substream = substream;
 627         runtime->hw = snd_als4000_playback;
 628         return 0;
 629 }
 630 
 631 static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
 632 {
 633         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 634 
 635         chip->playback_substream = NULL;
 636         snd_pcm_lib_free_pages(substream);
 637         return 0;
 638 }
 639 
 640 static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
 641 {
 642         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 643         struct snd_pcm_runtime *runtime = substream->runtime;
 644 
 645         chip->capture_substream = substream;
 646         runtime->hw = snd_als4000_capture;
 647         return 0;
 648 }
 649 
 650 static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
 651 {
 652         struct snd_sb *chip = snd_pcm_substream_chip(substream);
 653 
 654         chip->capture_substream = NULL;
 655         snd_pcm_lib_free_pages(substream);
 656         return 0;
 657 }
 658 
 659 /******************************************************************/
 660 
 661 static const struct snd_pcm_ops snd_als4000_playback_ops = {
 662         .open =         snd_als4000_playback_open,
 663         .close =        snd_als4000_playback_close,
 664         .ioctl =        snd_pcm_lib_ioctl,
 665         .hw_params =    snd_als4000_hw_params,
 666         .hw_free =      snd_als4000_hw_free,
 667         .prepare =      snd_als4000_playback_prepare,
 668         .trigger =      snd_als4000_playback_trigger,
 669         .pointer =      snd_als4000_playback_pointer
 670 };
 671 
 672 static const struct snd_pcm_ops snd_als4000_capture_ops = {
 673         .open =         snd_als4000_capture_open,
 674         .close =        snd_als4000_capture_close,
 675         .ioctl =        snd_pcm_lib_ioctl,
 676         .hw_params =    snd_als4000_hw_params,
 677         .hw_free =      snd_als4000_hw_free,
 678         .prepare =      snd_als4000_capture_prepare,
 679         .trigger =      snd_als4000_capture_trigger,
 680         .pointer =      snd_als4000_capture_pointer
 681 };
 682 
 683 static int snd_als4000_pcm(struct snd_sb *chip, int device)
 684 {
 685         struct snd_pcm *pcm;
 686         int err;
 687 
 688         err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm);
 689         if (err < 0)
 690                 return err;
 691         pcm->private_data = chip;
 692         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 693         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 694         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 695 
 696         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 697                                               64*1024, 64*1024);
 698 
 699         chip->pcm = pcm;
 700 
 701         return 0;
 702 }
 703 
 704 /******************************************************************/
 705 
 706 static void snd_als4000_set_addr(unsigned long iobase,
 707                                         unsigned int sb_io,
 708                                         unsigned int mpu_io,
 709                                         unsigned int opl_io,
 710                                         unsigned int game_io)
 711 {
 712         u32 cfg1 = 0;
 713         u32 cfg2 = 0;
 714 
 715         if (mpu_io > 0)
 716                 cfg2 |= (mpu_io | 1) << 16;
 717         if (sb_io > 0)
 718                 cfg2 |= (sb_io | 1);
 719         if (game_io > 0)
 720                 cfg1 |= (game_io | 1) << 16;
 721         if (opl_io > 0)
 722                 cfg1 |= (opl_io | 1);
 723         snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1);
 724         snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2);
 725 }
 726 
 727 static void snd_als4000_configure(struct snd_sb *chip)
 728 {
 729         u8 tmp;
 730         int i;
 731 
 732         /* do some more configuration */
 733         spin_lock_irq(&chip->mixer_lock);
 734         tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
 735         snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 736                                 tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 737         /* always select DMA channel 0, since we do not actually use DMA
 738          * SPECS_PAGE: 19/20 */
 739         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 740         snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 741                                  tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 742         spin_unlock_irq(&chip->mixer_lock);
 743         
 744         spin_lock_irq(&chip->reg_lock);
 745         /* enable interrupts */
 746         snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
 747                                         ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
 748 
 749         /* SPECS_PAGE: 39 */
 750         for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i)
 751                 snd_als4k_gcr_write(chip, i, 0);
 752         /* enable burst mode to prevent dropouts during high PCI bus usage */
 753         snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
 754                 (snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04);
 755         spin_unlock_irq(&chip->reg_lock);
 756 }
 757 
 758 #ifdef SUPPORT_JOYSTICK
 759 static int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
 760 {
 761         struct gameport *gp;
 762         struct resource *r;
 763         int io_port;
 764 
 765         if (joystick_port[dev] == 0)
 766                 return -ENODEV;
 767 
 768         if (joystick_port[dev] == 1) { /* auto-detect */
 769                 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
 770                         r = request_region(io_port, 8, "ALS4000 gameport");
 771                         if (r)
 772                                 break;
 773                 }
 774         } else {
 775                 io_port = joystick_port[dev];
 776                 r = request_region(io_port, 8, "ALS4000 gameport");
 777         }
 778 
 779         if (!r) {
 780                 dev_warn(&acard->pci->dev, "cannot reserve joystick ports\n");
 781                 return -EBUSY;
 782         }
 783 
 784         acard->gameport = gp = gameport_allocate_port();
 785         if (!gp) {
 786                 dev_err(&acard->pci->dev, "cannot allocate memory for gameport\n");
 787                 release_and_free_resource(r);
 788                 return -ENOMEM;
 789         }
 790 
 791         gameport_set_name(gp, "ALS4000 Gameport");
 792         gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
 793         gameport_set_dev_parent(gp, &acard->pci->dev);
 794         gp->io = io_port;
 795         gameport_set_port_data(gp, r);
 796 
 797         /* Enable legacy joystick port */
 798         snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
 799 
 800         gameport_register_port(acard->gameport);
 801 
 802         return 0;
 803 }
 804 
 805 static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
 806 {
 807         if (acard->gameport) {
 808                 struct resource *r = gameport_get_port_data(acard->gameport);
 809 
 810                 gameport_unregister_port(acard->gameport);
 811                 acard->gameport = NULL;
 812 
 813                 /* disable joystick */
 814                 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
 815 
 816                 release_and_free_resource(r);
 817         }
 818 }
 819 #else
 820 static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
 821 static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
 822 #endif
 823 
 824 static void snd_card_als4000_free( struct snd_card *card )
 825 {
 826         struct snd_card_als4000 *acard = card->private_data;
 827 
 828         /* make sure that interrupts are disabled */
 829         snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0);
 830         /* free resources */
 831         snd_als4000_free_gameport(acard);
 832         pci_release_regions(acard->pci);
 833         pci_disable_device(acard->pci);
 834 }
 835 
 836 static int snd_card_als4000_probe(struct pci_dev *pci,
 837                                   const struct pci_device_id *pci_id)
 838 {
 839         static int dev;
 840         struct snd_card *card;
 841         struct snd_card_als4000 *acard;
 842         unsigned long iobase;
 843         struct snd_sb *chip;
 844         struct snd_opl3 *opl3;
 845         unsigned short word;
 846         int err;
 847 
 848         if (dev >= SNDRV_CARDS)
 849                 return -ENODEV;
 850         if (!enable[dev]) {
 851                 dev++;
 852                 return -ENOENT;
 853         }
 854 
 855         /* enable PCI device */
 856         if ((err = pci_enable_device(pci)) < 0) {
 857                 return err;
 858         }
 859         /* check, if we can restrict PCI DMA transfers to 24 bits */
 860         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(24)) < 0 ||
 861             dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(24)) < 0) {
 862                 dev_err(&pci->dev, "architecture does not support 24bit PCI busmaster DMA\n");
 863                 pci_disable_device(pci);
 864                 return -ENXIO;
 865         }
 866 
 867         if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 868                 pci_disable_device(pci);
 869                 return err;
 870         }
 871         iobase = pci_resource_start(pci, 0);
 872 
 873         pci_read_config_word(pci, PCI_COMMAND, &word);
 874         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 875         pci_set_master(pci);
 876         
 877         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 878                            sizeof(*acard) /* private_data: acard */,
 879                            &card);
 880         if (err < 0) {
 881                 pci_release_regions(pci);
 882                 pci_disable_device(pci);
 883                 return err;
 884         }
 885 
 886         acard = card->private_data;
 887         acard->pci = pci;
 888         acard->iobase = iobase;
 889         card->private_free = snd_card_als4000_free;
 890 
 891         /* disable all legacy ISA stuff */
 892         snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
 893 
 894         if ((err = snd_sbdsp_create(card,
 895                                     iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 896                                     pci->irq,
 897                 /* internally registered as IRQF_SHARED in case of ALS4000 SB */
 898                                     snd_als4000_interrupt,
 899                                     -1,
 900                                     -1,
 901                                     SB_HW_ALS4000,
 902                                     &chip)) < 0) {
 903                 goto out_err;
 904         }
 905         acard->chip = chip;
 906 
 907         chip->pci = pci;
 908         chip->alt_port = iobase;
 909 
 910         snd_als4000_configure(chip);
 911 
 912         strcpy(card->driver, "ALS4000");
 913         strcpy(card->shortname, "Avance Logic ALS4000");
 914         sprintf(card->longname, "%s at 0x%lx, irq %i",
 915                 card->shortname, chip->alt_port, chip->irq);
 916 
 917         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 918                                         iobase + ALS4K_IOB_30_MIDI_DATA,
 919                                         MPU401_INFO_INTEGRATED |
 920                                         MPU401_INFO_IRQ_HOOK,
 921                                         -1, &chip->rmidi)) < 0) {
 922                 dev_err(&pci->dev, "no MPU-401 device at 0x%lx?\n",
 923                                 iobase + ALS4K_IOB_30_MIDI_DATA);
 924                 goto out_err;
 925         }
 926         /* FIXME: ALS4000 has interesting MPU401 configuration features
 927          * at ALS4K_CR1A_MPU401_UART_MODE_CONTROL
 928          * (pass-thru / UART switching, fast MIDI clock, etc.),
 929          * however there doesn't seem to be an ALSA API for this...
 930          * SPECS_PAGE: 21 */
 931 
 932         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 933                 goto out_err;
 934         }
 935         if ((err = snd_sbmixer_new(chip)) < 0) {
 936                 goto out_err;
 937         }           
 938 
 939         if (snd_opl3_create(card,
 940                                 iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 941                                 iobase + ALS4K_IOB_12_ADLIB_ADDR2,
 942                             OPL3_HW_AUTO, 1, &opl3) < 0) {
 943                 dev_err(&pci->dev, "no OPL device at 0x%lx-0x%lx?\n",
 944                            iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 945                            iobase + ALS4K_IOB_12_ADLIB_ADDR2);
 946         } else {
 947                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 948                         goto out_err;
 949                 }
 950         }
 951 
 952         snd_als4000_create_gameport(acard, dev);
 953 
 954         if ((err = snd_card_register(card)) < 0) {
 955                 goto out_err;
 956         }
 957         pci_set_drvdata(pci, card);
 958         dev++;
 959         err = 0;
 960         goto out;
 961 
 962 out_err:
 963         snd_card_free(card);
 964         
 965 out:
 966         return err;
 967 }
 968 
 969 static void snd_card_als4000_remove(struct pci_dev *pci)
 970 {
 971         snd_card_free(pci_get_drvdata(pci));
 972 }
 973 
 974 #ifdef CONFIG_PM_SLEEP
 975 static int snd_als4000_suspend(struct device *dev)
 976 {
 977         struct snd_card *card = dev_get_drvdata(dev);
 978         struct snd_card_als4000 *acard = card->private_data;
 979         struct snd_sb *chip = acard->chip;
 980 
 981         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 982         
 983         snd_sbmixer_suspend(chip);
 984         return 0;
 985 }
 986 
 987 static int snd_als4000_resume(struct device *dev)
 988 {
 989         struct snd_card *card = dev_get_drvdata(dev);
 990         struct snd_card_als4000 *acard = card->private_data;
 991         struct snd_sb *chip = acard->chip;
 992 
 993         snd_als4000_configure(chip);
 994         snd_sbdsp_reset(chip);
 995         snd_sbmixer_resume(chip);
 996 
 997 #ifdef SUPPORT_JOYSTICK
 998         if (acard->gameport)
 999                 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
1000 #endif
1001 
1002         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1003         return 0;
1004 }
1005 
1006 static SIMPLE_DEV_PM_OPS(snd_als4000_pm, snd_als4000_suspend, snd_als4000_resume);
1007 #define SND_ALS4000_PM_OPS      &snd_als4000_pm
1008 #else
1009 #define SND_ALS4000_PM_OPS      NULL
1010 #endif /* CONFIG_PM_SLEEP */
1011 
1012 static struct pci_driver als4000_driver = {
1013         .name = KBUILD_MODNAME,
1014         .id_table = snd_als4000_ids,
1015         .probe = snd_card_als4000_probe,
1016         .remove = snd_card_als4000_remove,
1017         .driver = {
1018                 .pm = SND_ALS4000_PM_OPS,
1019         },
1020 };
1021 
1022 module_pci_driver(als4000_driver);
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root/sound/pci/als4000.c

DEFINITIONS
