linux/sound/pci/als4000.c
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   1/*
   2 *  card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
   3 *  Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
   4 *                        Jaroslav Kysela <perex@perex.cz>
   5 *  Copyright (C) 2002, 2008 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
   6 *
   7 *  Framework borrowed from Massimo Piccioni's card-als100.c.
   8 *
   9 *
  10 *  This program is free software; you can redistribute it and/or modify
  11 *  it under the terms of the GNU General Public License as published by
  12 *  the Free Software Foundation; either version 2 of the License, or
  13 *  (at your option) any later version.
  14 *
  15 *  This program is distributed in the hope that it will be useful,
  16 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *  GNU General Public License for more details.
  19
  20 *  You should have received a copy of the GNU General Public License
  21 *  along with this program; if not, write to the Free Software
  22 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23 *
  24 * NOTES
  25 *
  26 *  Since Avance does not provide any meaningful documentation, and I
  27 *  bought an ALS4000 based soundcard, I was forced to base this driver
  28 *  on reverse engineering.
  29 *
  30 *  Note: this is no longer true (thank you!):
  31 *  pretty verbose chip docu (ALS4000a.PDF) can be found on the ALSA web site.
  32 *  Page numbers stated anywhere below with the "SPECS_PAGE:" tag
  33 *  refer to: ALS4000a.PDF specs Ver 1.0, May 28th, 1998.
  34 *
  35 *  The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
  36 *  ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport 
  37 *  interface. These subsystems can be mapped into ISA io-port space, 
  38 *  using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ 
  39 *  services to the subsystems.
  40 * 
  41 * While ALS4000 is very similar to a SoundBlaster, the differences in
  42 * DMA and capturing require more changes to the SoundBlaster than
  43 * desirable, so I made this separate driver.
  44 * 
  45 * The ALS4000 can do real full duplex playback/capture.
  46 *
  47 * FMDAC:
  48 * - 0x4f -> port 0x14
  49 * - port 0x15 |= 1
  50 *
  51 * Enable/disable 3D sound:
  52 * - 0x50 -> port 0x14
  53 * - change bit 6 (0x40) of port 0x15
  54 *
  55 * Set QSound:
  56 * - 0xdb -> port 0x14
  57 * - set port 0x15:
  58 *   0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
  59 *
  60 * Set KSound:
  61 * - value -> some port 0x0c0d
  62 *
  63 * ToDo:
  64 * - by default, don't enable legacy game and use PCI game I/O
  65 * - power management? (card can do voice wakeup according to datasheet!!)
  66 */
  67
  68#include <asm/io.h>
  69#include <linux/init.h>
  70#include <linux/pci.h>
  71#include <linux/slab.h>
  72#include <linux/gameport.h>
  73#include <linux/moduleparam.h>
  74#include <linux/dma-mapping.h>
  75#include <sound/core.h>
  76#include <sound/pcm.h>
  77#include <sound/rawmidi.h>
  78#include <sound/mpu401.h>
  79#include <sound/opl3.h>
  80#include <sound/sb.h>
  81#include <sound/initval.h>
  82
  83MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>, Andreas Mohr");
  84MODULE_DESCRIPTION("Avance Logic ALS4000");
  85MODULE_LICENSE("GPL");
  86MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
  87
  88#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  89#define SUPPORT_JOYSTICK 1
  90#endif
  91
  92static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  93static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  94static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  95#ifdef SUPPORT_JOYSTICK
  96static int joystick_port[SNDRV_CARDS];
  97#endif
  98
  99module_param_array(index, int, NULL, 0444);
 100MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
 101module_param_array(id, charp, NULL, 0444);
 102MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
 103module_param_array(enable, bool, NULL, 0444);
 104MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
 105#ifdef SUPPORT_JOYSTICK
 106module_param_array(joystick_port, int, NULL, 0444);
 107MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 108#endif
 109
 110struct snd_card_als4000 {
 111        /* most frequent access first */
 112        unsigned long iobase;
 113        struct pci_dev *pci;
 114        struct snd_sb *chip;
 115#ifdef SUPPORT_JOYSTICK
 116        struct gameport *gameport;
 117#endif
 118};
 119
 120static struct pci_device_id snd_als4000_ids[] = {
 121        { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 122        { 0, }
 123};
 124
 125MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 126
 127enum als4k_iobase_t {
 128        /* IOx: B == Byte, W = Word, D = DWord; SPECS_PAGE: 37 */
 129        ALS4K_IOD_00_AC97_ACCESS = 0x00,
 130        ALS4K_IOW_04_AC97_READ = 0x04,
 131        ALS4K_IOB_06_AC97_STATUS = 0x06,
 132        ALS4K_IOB_07_IRQSTATUS = 0x07,
 133        ALS4K_IOD_08_GCR_DATA = 0x08,
 134        ALS4K_IOB_0C_GCR_INDEX = 0x0c,
 135        ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU = 0x0e,
 136        ALS4K_IOB_10_ADLIB_ADDR0 = 0x10,
 137        ALS4K_IOB_11_ADLIB_ADDR1 = 0x11,
 138        ALS4K_IOB_12_ADLIB_ADDR2 = 0x12,
 139        ALS4K_IOB_13_ADLIB_ADDR3 = 0x13,
 140        ALS4K_IOB_14_MIXER_INDEX = 0x14,
 141        ALS4K_IOB_15_MIXER_DATA = 0x15,
 142        ALS4K_IOB_16_ESP_RESET = 0x16,
 143        ALS4K_IOB_16_ACK_FOR_CR1E = 0x16, /* 2nd function */
 144        ALS4K_IOB_18_OPL_ADDR0 = 0x18,
 145        ALS4K_IOB_19_OPL_ADDR1 = 0x19,
 146        ALS4K_IOB_1A_ESP_RD_DATA = 0x1a,
 147        ALS4K_IOB_1C_ESP_CMD_DATA = 0x1c,
 148        ALS4K_IOB_1C_ESP_WR_STATUS = 0x1c, /* 2nd function */
 149        ALS4K_IOB_1E_ESP_RD_STATUS8 = 0x1e,
 150        ALS4K_IOB_1F_ESP_RD_STATUS16 = 0x1f,
 151        ALS4K_IOB_20_ESP_GAMEPORT_200 = 0x20,
 152        ALS4K_IOB_21_ESP_GAMEPORT_201 = 0x21,
 153        ALS4K_IOB_30_MIDI_DATA = 0x30,
 154        ALS4K_IOB_31_MIDI_STATUS = 0x31,
 155        ALS4K_IOB_31_MIDI_COMMAND = 0x31, /* 2nd function */
 156};
 157
 158enum als4k_iobase_0e_t {
 159        ALS4K_IOB_0E_MPU_IRQ = 0x10,
 160        ALS4K_IOB_0E_CR1E_IRQ = 0x40,
 161        ALS4K_IOB_0E_SB_DMA_IRQ = 0x80,
 162};
 163
 164enum als4k_gcr_t { /* all registers 32bit wide; SPECS_PAGE: 38 to 42 */
 165        ALS4K_GCR8C_MISC_CTRL = 0x8c,
 166        ALS4K_GCR90_TEST_MODE_REG = 0x90,
 167        ALS4K_GCR91_DMA0_ADDR = 0x91,
 168        ALS4K_GCR92_DMA0_MODE_COUNT = 0x92,
 169        ALS4K_GCR93_DMA1_ADDR = 0x93,
 170        ALS4K_GCR94_DMA1_MODE_COUNT = 0x94,
 171        ALS4K_GCR95_DMA3_ADDR = 0x95,
 172        ALS4K_GCR96_DMA3_MODE_COUNT = 0x96,
 173        ALS4K_GCR99_DMA_EMULATION_CTRL = 0x99,
 174        ALS4K_GCRA0_FIFO1_CURRENT_ADDR = 0xa0,
 175        ALS4K_GCRA1_FIFO1_STATUS_BYTECOUNT = 0xa1,
 176        ALS4K_GCRA2_FIFO2_PCIADDR = 0xa2,
 177        ALS4K_GCRA3_FIFO2_COUNT = 0xa3,
 178        ALS4K_GCRA4_FIFO2_CURRENT_ADDR = 0xa4,
 179        ALS4K_GCRA5_FIFO1_STATUS_BYTECOUNT = 0xa5,
 180        ALS4K_GCRA6_PM_CTRL = 0xa6,
 181        ALS4K_GCRA7_PCI_ACCESS_STORAGE = 0xa7,
 182        ALS4K_GCRA8_LEGACY_CFG1 = 0xa8,
 183        ALS4K_GCRA9_LEGACY_CFG2 = 0xa9,
 184        ALS4K_GCRFF_DUMMY_SCRATCH = 0xff,
 185};
 186
 187enum als4k_gcr8c_t {
 188        ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE = 0x8000,
 189        ALS4K_GCR8C_CHIP_REV_MASK = 0xf0000
 190};
 191
 192static inline void snd_als4k_iobase_writeb(unsigned long iobase,
 193                                                enum als4k_iobase_t reg,
 194                                                u8 val)
 195{
 196        outb(val, iobase + reg);
 197}
 198
 199static inline void snd_als4k_iobase_writel(unsigned long iobase,
 200                                                enum als4k_iobase_t reg,
 201                                                u32 val)
 202{
 203        outl(val, iobase + reg);
 204}
 205
 206static inline u8 snd_als4k_iobase_readb(unsigned long iobase,
 207                                                enum als4k_iobase_t reg)
 208{
 209        return inb(iobase + reg);
 210}
 211
 212static inline u32 snd_als4k_iobase_readl(unsigned long iobase,
 213                                                enum als4k_iobase_t reg)
 214{
 215        return inl(iobase + reg);
 216}
 217
 218static inline void snd_als4k_gcr_write_addr(unsigned long iobase,
 219                                                 enum als4k_gcr_t reg,
 220                                                 u32 val)
 221{
 222        snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
 223        snd_als4k_iobase_writel(iobase, ALS4K_IOD_08_GCR_DATA, val);
 224}
 225
 226static inline void snd_als4k_gcr_write(struct snd_sb *sb,
 227                                         enum als4k_gcr_t reg,
 228                                         u32 val)
 229{
 230        snd_als4k_gcr_write_addr(sb->alt_port, reg, val);
 231}       
 232
 233static inline u32 snd_als4k_gcr_read_addr(unsigned long iobase,
 234                                                 enum als4k_gcr_t reg)
 235{
 236        /* SPECS_PAGE: 37/38 */
 237        snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
 238        return snd_als4k_iobase_readl(iobase, ALS4K_IOD_08_GCR_DATA);
 239}
 240
 241static inline u32 snd_als4k_gcr_read(struct snd_sb *sb, enum als4k_gcr_t reg)
 242{
 243        return snd_als4k_gcr_read_addr(sb->alt_port, reg);
 244}
 245
 246enum als4k_cr_t { /* all registers 8bit wide; SPECS_PAGE: 20 to 23 */
 247        ALS4K_CR0_SB_CONFIG = 0x00,
 248        ALS4K_CR2_MISC_CONTROL = 0x02,
 249        ALS4K_CR3_CONFIGURATION = 0x03,
 250        ALS4K_CR17_FIFO_STATUS = 0x17,
 251        ALS4K_CR18_ESP_MAJOR_VERSION = 0x18,
 252        ALS4K_CR19_ESP_MINOR_VERSION = 0x19,
 253        ALS4K_CR1A_MPU401_UART_MODE_CONTROL = 0x1a,
 254        ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO = 0x1c,
 255        ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI = 0x1d,
 256        ALS4K_CR1E_FIFO2_CONTROL = 0x1e, /* secondary PCM FIFO (recording) */
 257        ALS4K_CR3A_MISC_CONTROL = 0x3a,
 258        ALS4K_CR3B_CRC32_BYTE0 = 0x3b, /* for testing, activate via CR3A */
 259        ALS4K_CR3C_CRC32_BYTE1 = 0x3c,
 260        ALS4K_CR3D_CRC32_BYTE2 = 0x3d,
 261        ALS4K_CR3E_CRC32_BYTE3 = 0x3e,
 262};
 263
 264enum als4k_cr0_t {
 265        ALS4K_CR0_DMA_CONTIN_MODE_CTRL = 0x02, /* IRQ/FIFO controlled for 0/1 */
 266        ALS4K_CR0_DMA_90H_MODE_CTRL = 0x04, /* IRQ/FIFO controlled for 0/1 */
 267        ALS4K_CR0_MX80_81_REG_WRITE_ENABLE = 0x80,
 268};
 269
 270static inline void snd_als4_cr_write(struct snd_sb *chip,
 271                                        enum als4k_cr_t reg,
 272                                        u8 data)
 273{
 274        /* Control Register is reg | 0xc0 (bit 7, 6 set) on sbmixer_index
 275         * NOTE: assumes chip->mixer_lock to be locked externally already!
 276         * SPECS_PAGE: 6 */
 277        snd_sbmixer_write(chip, reg | 0xc0, data);
 278}
 279
 280static inline u8 snd_als4_cr_read(struct snd_sb *chip,
 281                                        enum als4k_cr_t reg)
 282{
 283        /* NOTE: assumes chip->mixer_lock to be locked externally already! */
 284        return snd_sbmixer_read(chip, reg | 0xc0);
 285}
 286
 287
 288
 289static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate)
 290{
 291        if (!(chip->mode & SB_RATE_LOCK)) {
 292                snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 293                snd_sbdsp_command(chip, rate>>8);
 294                snd_sbdsp_command(chip, rate);
 295        }
 296}
 297
 298static inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
 299                                               dma_addr_t addr, unsigned size)
 300{
 301        /* SPECS_PAGE: 40 */
 302        snd_als4k_gcr_write(chip, ALS4K_GCRA2_FIFO2_PCIADDR, addr);
 303        snd_als4k_gcr_write(chip, ALS4K_GCRA3_FIFO2_COUNT, (size-1));
 304}
 305
 306static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
 307                                                dma_addr_t addr,
 308                                                unsigned size)
 309{
 310        /* SPECS_PAGE: 38 */
 311        snd_als4k_gcr_write(chip, ALS4K_GCR91_DMA0_ADDR, addr);
 312        snd_als4k_gcr_write(chip, ALS4K_GCR92_DMA0_MODE_COUNT,
 313                                                        (size-1)|0x180000);
 314}
 315
 316#define ALS4000_FORMAT_SIGNED   (1<<0)
 317#define ALS4000_FORMAT_16BIT    (1<<1)
 318#define ALS4000_FORMAT_STEREO   (1<<2)
 319
 320static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
 321{
 322        int result;
 323
 324        result = 0;
 325        if (snd_pcm_format_signed(runtime->format))
 326                result |= ALS4000_FORMAT_SIGNED;
 327        if (snd_pcm_format_physical_width(runtime->format) == 16)
 328                result |= ALS4000_FORMAT_16BIT;
 329        if (runtime->channels > 1)
 330                result |= ALS4000_FORMAT_STEREO;
 331        return result;
 332}
 333
 334/* structure for setting up playback */
 335static const struct {
 336        unsigned char dsp_cmd, dma_on, dma_off, format;
 337} playback_cmd_vals[]={
 338/* ALS4000_FORMAT_U8_MONO */
 339{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 340/* ALS4000_FORMAT_S8_MONO */    
 341{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 342/* ALS4000_FORMAT_U16L_MONO */
 343{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 344/* ALS4000_FORMAT_S16L_MONO */
 345{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 346/* ALS4000_FORMAT_U8_STEREO */
 347{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 348/* ALS4000_FORMAT_S8_STEREO */  
 349{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 350/* ALS4000_FORMAT_U16L_STEREO */
 351{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 352/* ALS4000_FORMAT_S16L_STEREO */
 353{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 354};
 355#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 356
 357/* structure for setting up capture */
 358enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 359static const unsigned char capture_cmd_vals[]=
 360{
 361CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 362CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */    
 363CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 364CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 365CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 366CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */  
 367CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 368CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 369};      
 370#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 371
 372static int snd_als4000_hw_params(struct snd_pcm_substream *substream,
 373                                 struct snd_pcm_hw_params *hw_params)
 374{
 375        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 376}
 377
 378static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
 379{
 380        snd_pcm_lib_free_pages(substream);
 381        return 0;
 382}
 383
 384static int snd_als4000_capture_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->capture_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->capture_format & ALS4000_FORMAT_16BIT)
 397                count >>= 1;
 398        count--;
 399
 400        spin_lock_irq(&chip->reg_lock);
 401        snd_als4000_set_rate(chip, runtime->rate);
 402        snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 403        spin_unlock_irq(&chip->reg_lock);
 404        spin_lock_irq(&chip->mixer_lock);
 405        snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
 406        snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
 407        spin_unlock_irq(&chip->mixer_lock);
 408        return 0;
 409}
 410
 411static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
 412{
 413        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 414        struct snd_pcm_runtime *runtime = substream->runtime;
 415        unsigned long size;
 416        unsigned count;
 417
 418        chip->playback_format = snd_als4000_get_format(runtime);
 419        
 420        size = snd_pcm_lib_buffer_bytes(substream);
 421        count = snd_pcm_lib_period_bytes(substream);
 422        
 423        if (chip->playback_format & ALS4000_FORMAT_16BIT)
 424                count >>= 1;
 425        count--;
 426        
 427        /* FIXME: from second playback on, there's a lot more clicks and pops
 428         * involved here than on first playback. Fiddling with
 429         * tons of different settings didn't help (DMA, speaker on/off,
 430         * reordering, ...). Something seems to get enabled on playback
 431         * that I haven't found out how to disable again, which then causes
 432         * the switching pops to reach the speakers the next time here. */
 433        spin_lock_irq(&chip->reg_lock);
 434        snd_als4000_set_rate(chip, runtime->rate);
 435        snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 436        
 437        /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 438        /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 439        snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 440        snd_sbdsp_command(chip, playback_cmd(chip).format);
 441        snd_sbdsp_command(chip, count & 0xff);
 442        snd_sbdsp_command(chip, count >> 8);
 443        snd_sbdsp_command(chip, playback_cmd(chip).dma_off);    
 444        spin_unlock_irq(&chip->reg_lock);
 445        
 446        return 0;
 447}
 448
 449static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 450{
 451        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 452        int result = 0;
 453        
 454        /* FIXME race condition in here!!!
 455           chip->mode non-atomic update gets consistently protected
 456           by reg_lock always, _except_ for this place!!
 457           Probably need to take reg_lock as outer (or inner??) lock, too.
 458           (or serialize both lock operations? probably not, though... - racy?)
 459        */
 460        spin_lock(&chip->mixer_lock);
 461        switch (cmd) {
 462        case SNDRV_PCM_TRIGGER_START:
 463        case SNDRV_PCM_TRIGGER_RESUME:
 464                chip->mode |= SB_RATE_LOCK_CAPTURE;
 465                snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 466                                                         capture_cmd(chip));
 467                break;
 468        case SNDRV_PCM_TRIGGER_STOP:
 469        case SNDRV_PCM_TRIGGER_SUSPEND:
 470                chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 471                snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 472                                                         capture_cmd(chip));
 473                break;
 474        default:
 475                result = -EINVAL;
 476                break;
 477        }
 478        spin_unlock(&chip->mixer_lock);
 479        return result;
 480}
 481
 482static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 483{
 484        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 485        int result = 0;
 486
 487        spin_lock(&chip->reg_lock);
 488        switch (cmd) {
 489        case SNDRV_PCM_TRIGGER_START:
 490        case SNDRV_PCM_TRIGGER_RESUME:
 491                chip->mode |= SB_RATE_LOCK_PLAYBACK;
 492                snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 493                break;
 494        case SNDRV_PCM_TRIGGER_STOP:
 495        case SNDRV_PCM_TRIGGER_SUSPEND:
 496                snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 497                chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 498                break;
 499        default:
 500                result = -EINVAL;
 501                break;
 502        }
 503        spin_unlock(&chip->reg_lock);
 504        return result;
 505}
 506
 507static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
 508{
 509        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 510        unsigned int result;
 511
 512        spin_lock(&chip->reg_lock);     
 513        result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
 514        spin_unlock(&chip->reg_lock);
 515        result &= 0xffff;
 516        return bytes_to_frames( substream->runtime, result );
 517}
 518
 519static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
 520{
 521        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 522        unsigned result;
 523
 524        spin_lock(&chip->reg_lock);     
 525        result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
 526        spin_unlock(&chip->reg_lock);
 527        result &= 0xffff;
 528        return bytes_to_frames( substream->runtime, result );
 529}
 530
 531/* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
 532 * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
 533 * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
 534 * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
 535 * register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something
 536 * could be optimized here to query/write one register only...
 537 * And even if both registers need to be queried, then there's still the
 538 * question of whether it's actually correct to ACK PCI IRQ before reading
 539 * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
 540 * SB IRQ status.
 541 * (hmm, SPECS_PAGE: 38 mentions it the other way around!)
 542 * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
 543 * */
 544static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
 545{
 546        struct snd_sb *chip = dev_id;
 547        unsigned pci_irqstatus;
 548        unsigned sb_irqstatus;
 549
 550        /* find out which bit of the ALS4000 PCI block produced the interrupt,
 551           SPECS_PAGE: 38, 5 */
 552        pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port,
 553                                 ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU);
 554        if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ)
 555         && (chip->playback_substream)) /* playback */
 556                snd_pcm_period_elapsed(chip->playback_substream);
 557        if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ)
 558         && (chip->capture_substream)) /* capturing */
 559                snd_pcm_period_elapsed(chip->capture_substream);
 560        if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ)
 561         && (chip->rmidi)) /* MPU401 interrupt */
 562                snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 563        /* ACK the PCI block IRQ */
 564        snd_als4k_iobase_writeb(chip->alt_port,
 565                         ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
 566        
 567        spin_lock(&chip->mixer_lock);
 568        /* SPECS_PAGE: 20 */
 569        sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 570        spin_unlock(&chip->mixer_lock);
 571        
 572        if (sb_irqstatus & SB_IRQTYPE_8BIT)
 573                snd_sb_ack_8bit(chip);
 574        if (sb_irqstatus & SB_IRQTYPE_16BIT)
 575                snd_sb_ack_16bit(chip);
 576        if (sb_irqstatus & SB_IRQTYPE_MPUIN)
 577                inb(chip->mpu_port);
 578        if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA)
 579                snd_als4k_iobase_readb(chip->alt_port,
 580                                        ALS4K_IOB_16_ACK_FOR_CR1E);
 581
 582        /* printk(KERN_INFO "als4000: irq 0x%04x 0x%04x\n",
 583                                         pci_irqstatus, sb_irqstatus); */
 584
 585        /* only ack the things we actually handled above */
 586        return IRQ_RETVAL(
 587             (pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ|ALS4K_IOB_0E_CR1E_IRQ|
 588                                ALS4K_IOB_0E_MPU_IRQ))
 589          || (sb_irqstatus & (SB_IRQTYPE_8BIT|SB_IRQTYPE_16BIT|
 590                                SB_IRQTYPE_MPUIN|ALS4K_IRQTYPE_CR1E_DMA))
 591        );
 592}
 593
 594/*****************************************************************/
 595
 596static struct snd_pcm_hardware snd_als4000_playback =
 597{
 598        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 599                                 SNDRV_PCM_INFO_MMAP_VALID),
 600        .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 601                                SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 602        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 603        .rate_min =             4000,
 604        .rate_max =             48000,
 605        .channels_min =         1,
 606        .channels_max =         2,
 607        .buffer_bytes_max =     65536,
 608        .period_bytes_min =     64,
 609        .period_bytes_max =     65536,
 610        .periods_min =          1,
 611        .periods_max =          1024,
 612        .fifo_size =            0
 613};
 614
 615static struct snd_pcm_hardware snd_als4000_capture =
 616{
 617        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 618                                 SNDRV_PCM_INFO_MMAP_VALID),
 619        .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 620                                SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 621        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 622        .rate_min =             4000,
 623        .rate_max =             48000,
 624        .channels_min =         1,
 625        .channels_max =         2,
 626        .buffer_bytes_max =     65536,
 627        .period_bytes_min =     64,
 628        .period_bytes_max =     65536,
 629        .periods_min =          1,
 630        .periods_max =          1024,
 631        .fifo_size =            0
 632};
 633
 634/*****************************************************************/
 635
 636static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
 637{
 638        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 639        struct snd_pcm_runtime *runtime = substream->runtime;
 640
 641        chip->playback_substream = substream;
 642        runtime->hw = snd_als4000_playback;
 643        return 0;
 644}
 645
 646static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
 647{
 648        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 649
 650        chip->playback_substream = NULL;
 651        snd_pcm_lib_free_pages(substream);
 652        return 0;
 653}
 654
 655static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
 656{
 657        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 658        struct snd_pcm_runtime *runtime = substream->runtime;
 659
 660        chip->capture_substream = substream;
 661        runtime->hw = snd_als4000_capture;
 662        return 0;
 663}
 664
 665static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
 666{
 667        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 668
 669        chip->capture_substream = NULL;
 670        snd_pcm_lib_free_pages(substream);
 671        return 0;
 672}
 673
 674/******************************************************************/
 675
 676static struct snd_pcm_ops snd_als4000_playback_ops = {
 677        .open =         snd_als4000_playback_open,
 678        .close =        snd_als4000_playback_close,
 679        .ioctl =        snd_pcm_lib_ioctl,
 680        .hw_params =    snd_als4000_hw_params,
 681        .hw_free =      snd_als4000_hw_free,
 682        .prepare =      snd_als4000_playback_prepare,
 683        .trigger =      snd_als4000_playback_trigger,
 684        .pointer =      snd_als4000_playback_pointer
 685};
 686
 687static struct snd_pcm_ops snd_als4000_capture_ops = {
 688        .open =         snd_als4000_capture_open,
 689        .close =        snd_als4000_capture_close,
 690        .ioctl =        snd_pcm_lib_ioctl,
 691        .hw_params =    snd_als4000_hw_params,
 692        .hw_free =      snd_als4000_hw_free,
 693        .prepare =      snd_als4000_capture_prepare,
 694        .trigger =      snd_als4000_capture_trigger,
 695        .pointer =      snd_als4000_capture_pointer
 696};
 697
 698static int __devinit snd_als4000_pcm(struct snd_sb *chip, int device)
 699{
 700        struct snd_pcm *pcm;
 701        int err;
 702
 703        err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm);
 704        if (err < 0)
 705                return err;
 706        pcm->private_data = chip;
 707        pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 708        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 709        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 710
 711        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 712                                              64*1024, 64*1024);
 713
 714        chip->pcm = pcm;
 715
 716        return 0;
 717}
 718
 719/******************************************************************/
 720
 721static void snd_als4000_set_addr(unsigned long iobase,
 722                                        unsigned int sb_io,
 723                                        unsigned int mpu_io,
 724                                        unsigned int opl_io,
 725                                        unsigned int game_io)
 726{
 727        u32 cfg1 = 0;
 728        u32 cfg2 = 0;
 729
 730        if (mpu_io > 0)
 731                cfg2 |= (mpu_io | 1) << 16;
 732        if (sb_io > 0)
 733                cfg2 |= (sb_io | 1);
 734        if (game_io > 0)
 735                cfg1 |= (game_io | 1) << 16;
 736        if (opl_io > 0)
 737                cfg1 |= (opl_io | 1);
 738        snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1);
 739        snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2);
 740}
 741
 742static void snd_als4000_configure(struct snd_sb *chip)
 743{
 744        u8 tmp;
 745        int i;
 746
 747        /* do some more configuration */
 748        spin_lock_irq(&chip->mixer_lock);
 749        tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
 750        snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 751                                tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 752        /* always select DMA channel 0, since we do not actually use DMA
 753         * SPECS_PAGE: 19/20 */
 754        snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 755        snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 756                                 tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 757        spin_unlock_irq(&chip->mixer_lock);
 758        
 759        spin_lock_irq(&chip->reg_lock);
 760        /* enable interrupts */
 761        snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
 762                                        ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
 763
 764        /* SPECS_PAGE: 39 */
 765        for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i)
 766                snd_als4k_gcr_write(chip, i, 0);
 767        
 768        snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
 769                snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL));
 770        spin_unlock_irq(&chip->reg_lock);
 771}
 772
 773#ifdef SUPPORT_JOYSTICK
 774static int __devinit snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
 775{
 776        struct gameport *gp;
 777        struct resource *r;
 778        int io_port;
 779
 780        if (joystick_port[dev] == 0)
 781                return -ENODEV;
 782
 783        if (joystick_port[dev] == 1) { /* auto-detect */
 784                for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
 785                        r = request_region(io_port, 8, "ALS4000 gameport");
 786                        if (r)
 787                                break;
 788                }
 789        } else {
 790                io_port = joystick_port[dev];
 791                r = request_region(io_port, 8, "ALS4000 gameport");
 792        }
 793
 794        if (!r) {
 795                printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
 796                return -EBUSY;
 797        }
 798
 799        acard->gameport = gp = gameport_allocate_port();
 800        if (!gp) {
 801                printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
 802                release_and_free_resource(r);
 803                return -ENOMEM;
 804        }
 805
 806        gameport_set_name(gp, "ALS4000 Gameport");
 807        gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
 808        gameport_set_dev_parent(gp, &acard->pci->dev);
 809        gp->io = io_port;
 810        gameport_set_port_data(gp, r);
 811
 812        /* Enable legacy joystick port */
 813        snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
 814
 815        gameport_register_port(acard->gameport);
 816
 817        return 0;
 818}
 819
 820static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
 821{
 822        if (acard->gameport) {
 823                struct resource *r = gameport_get_port_data(acard->gameport);
 824
 825                gameport_unregister_port(acard->gameport);
 826                acard->gameport = NULL;
 827
 828                /* disable joystick */
 829                snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
 830
 831                release_and_free_resource(r);
 832        }
 833}
 834#else
 835static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
 836static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
 837#endif
 838
 839static void snd_card_als4000_free( struct snd_card *card )
 840{
 841        struct snd_card_als4000 *acard = card->private_data;
 842
 843        /* make sure that interrupts are disabled */
 844        snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0);
 845        /* free resources */
 846        snd_als4000_free_gameport(acard);
 847        pci_release_regions(acard->pci);
 848        pci_disable_device(acard->pci);
 849}
 850
 851static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 852                                          const struct pci_device_id *pci_id)
 853{
 854        static int dev;
 855        struct snd_card *card;
 856        struct snd_card_als4000 *acard;
 857        unsigned long iobase;
 858        struct snd_sb *chip;
 859        struct snd_opl3 *opl3;
 860        unsigned short word;
 861        int err;
 862
 863        if (dev >= SNDRV_CARDS)
 864                return -ENODEV;
 865        if (!enable[dev]) {
 866                dev++;
 867                return -ENOENT;
 868        }
 869
 870        /* enable PCI device */
 871        if ((err = pci_enable_device(pci)) < 0) {
 872                return err;
 873        }
 874        /* check, if we can restrict PCI DMA transfers to 24 bits */
 875        if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
 876            pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
 877                snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
 878                pci_disable_device(pci);
 879                return -ENXIO;
 880        }
 881
 882        if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 883                pci_disable_device(pci);
 884                return err;
 885        }
 886        iobase = pci_resource_start(pci, 0);
 887
 888        pci_read_config_word(pci, PCI_COMMAND, &word);
 889        pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 890        pci_set_master(pci);
 891        
 892        card = snd_card_new(index[dev], id[dev], THIS_MODULE, 
 893                            sizeof(*acard) /* private_data: acard */);
 894        if (card == NULL) {
 895                pci_release_regions(pci);
 896                pci_disable_device(pci);
 897                return -ENOMEM;
 898        }
 899
 900        acard = card->private_data;
 901        acard->pci = pci;
 902        acard->iobase = iobase;
 903        card->private_free = snd_card_als4000_free;
 904
 905        /* disable all legacy ISA stuff */
 906        snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
 907
 908        if ((err = snd_sbdsp_create(card,
 909                                    iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 910                                    pci->irq,
 911                /* internally registered as IRQF_SHARED in case of ALS4000 SB */
 912                                    snd_als4000_interrupt,
 913                                    -1,
 914                                    -1,
 915                                    SB_HW_ALS4000,
 916                                    &chip)) < 0) {
 917                goto out_err;
 918        }
 919        acard->chip = chip;
 920
 921        chip->pci = pci;
 922        chip->alt_port = iobase;
 923        snd_card_set_dev(card, &pci->dev);
 924
 925        snd_als4000_configure(chip);
 926
 927        strcpy(card->driver, "ALS4000");
 928        strcpy(card->shortname, "Avance Logic ALS4000");
 929        sprintf(card->longname, "%s at 0x%lx, irq %i",
 930                card->shortname, chip->alt_port, chip->irq);
 931
 932        if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
 933                                        iobase + ALS4K_IOB_30_MIDI_DATA,
 934                                        MPU401_INFO_INTEGRATED,
 935                                        pci->irq, 0, &chip->rmidi)) < 0) {
 936                printk(KERN_ERR "als4000: no MPU-401 device at 0x%lx?\n",
 937                                iobase + ALS4K_IOB_30_MIDI_DATA);
 938                goto out_err;
 939        }
 940        /* FIXME: ALS4000 has interesting MPU401 configuration features
 941         * at ALS4K_CR1A_MPU401_UART_MODE_CONTROL
 942         * (pass-thru / UART switching, fast MIDI clock, etc.),
 943         * however there doesn't seem to be an ALSA API for this...
 944         * SPECS_PAGE: 21 */
 945
 946        if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 947                goto out_err;
 948        }
 949        if ((err = snd_sbmixer_new(chip)) < 0) {
 950                goto out_err;
 951        }           
 952
 953        if (snd_opl3_create(card,
 954                                iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 955                                iobase + ALS4K_IOB_12_ADLIB_ADDR2,
 956                            OPL3_HW_AUTO, 1, &opl3) < 0) {
 957                printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx?\n",
 958                           iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 959                           iobase + ALS4K_IOB_12_ADLIB_ADDR2);
 960        } else {
 961                if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 962                        goto out_err;
 963                }
 964        }
 965
 966        snd_als4000_create_gameport(acard, dev);
 967
 968        if ((err = snd_card_register(card)) < 0) {
 969                goto out_err;
 970        }
 971        pci_set_drvdata(pci, card);
 972        dev++;
 973        err = 0;
 974        goto out;
 975
 976out_err:
 977        snd_card_free(card);
 978        
 979out:
 980        return err;
 981}
 982
 983static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 984{
 985        snd_card_free(pci_get_drvdata(pci));
 986        pci_set_drvdata(pci, NULL);
 987}
 988
 989#ifdef CONFIG_PM
 990static int snd_als4000_suspend(struct pci_dev *pci, pm_message_t state)
 991{
 992        struct snd_card *card = pci_get_drvdata(pci);
 993        struct snd_card_als4000 *acard = card->private_data;
 994        struct snd_sb *chip = acard->chip;
 995
 996        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 997        
 998        snd_pcm_suspend_all(chip->pcm);
 999        snd_sbmixer_suspend(chip);
1000
1001        pci_disable_device(pci);
1002        pci_save_state(pci);
1003        pci_set_power_state(pci, pci_choose_state(pci, state));
1004        return 0;
1005}
1006
1007static int snd_als4000_resume(struct pci_dev *pci)
1008{
1009        struct snd_card *card = pci_get_drvdata(pci);
1010        struct snd_card_als4000 *acard = card->private_data;
1011        struct snd_sb *chip = acard->chip;
1012
1013        pci_set_power_state(pci, PCI_D0);
1014        pci_restore_state(pci);
1015        if (pci_enable_device(pci) < 0) {
1016                printk(KERN_ERR "als4000: pci_enable_device failed, "
1017                       "disabling device\n");
1018                snd_card_disconnect(card);
1019                return -EIO;
1020        }
1021        pci_set_master(pci);
1022
1023        snd_als4000_configure(chip);
1024        snd_sbdsp_reset(chip);
1025        snd_sbmixer_resume(chip);
1026
1027#ifdef SUPPORT_JOYSTICK
1028        if (acard->gameport)
1029                snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
1030#endif
1031
1032        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1033        return 0;
1034}
1035#endif /* CONFIG_PM */
1036
1037
1038static struct pci_driver driver = {
1039        .name = "ALS4000",
1040        .id_table = snd_als4000_ids,
1041        .probe = snd_card_als4000_probe,
1042        .remove = __devexit_p(snd_card_als4000_remove),
1043#ifdef CONFIG_PM
1044        .suspend = snd_als4000_suspend,
1045        .resume = snd_als4000_resume,
1046#endif
1047};
1048
1049static int __init alsa_card_als4000_init(void)
1050{
1051        return pci_register_driver(&driver);
1052}
1053
1054static void __exit alsa_card_als4000_exit(void)
1055{
1056        pci_unregister_driver(&driver);
1057}
1058
1059module_init(alsa_card_als4000_init)
1060module_exit(alsa_card_als4000_exit)
1061