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/gameport.h>
  72#include <linux/module.h>
  73#include <linux/dma-mapping.h>
  74#include <sound/core.h>
  75#include <sound/pcm.h>
  76#include <sound/rawmidi.h>
  77#include <sound/mpu401.h>
  78#include <sound/opl3.h>
  79#include <sound/sb.h>
  80#include <sound/initval.h>
  81
  82MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>, Andreas Mohr");
  83MODULE_DESCRIPTION("Avance Logic ALS4000");
  84MODULE_LICENSE("GPL");
  85MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
  86
  87#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  88#define SUPPORT_JOYSTICK 1
  89#endif
  90
  91static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  92static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  93static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
  94#ifdef SUPPORT_JOYSTICK
  95static int joystick_port[SNDRV_CARDS];
  96#endif
  97
  98module_param_array(index, int, NULL, 0444);
  99MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
 100module_param_array(id, charp, NULL, 0444);
 101MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
 102module_param_array(enable, bool, NULL, 0444);
 103MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
 104#ifdef SUPPORT_JOYSTICK
 105module_param_array(joystick_port, int, NULL, 0444);
 106MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
 107#endif
 108
 109struct snd_card_als4000 {
 110        /* most frequent access first */
 111        unsigned long iobase;
 112        struct pci_dev *pci;
 113        struct snd_sb *chip;
 114#ifdef SUPPORT_JOYSTICK
 115        struct gameport *gameport;
 116#endif
 117};
 118
 119static DEFINE_PCI_DEVICE_TABLE(snd_als4000_ids) = {
 120        { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
 121        { 0, }
 122};
 123
 124MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
 125
 126enum als4k_iobase_t {
 127        /* IOx: B == Byte, W = Word, D = DWord; SPECS_PAGE: 37 */
 128        ALS4K_IOD_00_AC97_ACCESS = 0x00,
 129        ALS4K_IOW_04_AC97_READ = 0x04,
 130        ALS4K_IOB_06_AC97_STATUS = 0x06,
 131        ALS4K_IOB_07_IRQSTATUS = 0x07,
 132        ALS4K_IOD_08_GCR_DATA = 0x08,
 133        ALS4K_IOB_0C_GCR_INDEX = 0x0c,
 134        ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU = 0x0e,
 135        ALS4K_IOB_10_ADLIB_ADDR0 = 0x10,
 136        ALS4K_IOB_11_ADLIB_ADDR1 = 0x11,
 137        ALS4K_IOB_12_ADLIB_ADDR2 = 0x12,
 138        ALS4K_IOB_13_ADLIB_ADDR3 = 0x13,
 139        ALS4K_IOB_14_MIXER_INDEX = 0x14,
 140        ALS4K_IOB_15_MIXER_DATA = 0x15,
 141        ALS4K_IOB_16_ESP_RESET = 0x16,
 142        ALS4K_IOB_16_ACK_FOR_CR1E = 0x16, /* 2nd function */
 143        ALS4K_IOB_18_OPL_ADDR0 = 0x18,
 144        ALS4K_IOB_19_OPL_ADDR1 = 0x19,
 145        ALS4K_IOB_1A_ESP_RD_DATA = 0x1a,
 146        ALS4K_IOB_1C_ESP_CMD_DATA = 0x1c,
 147        ALS4K_IOB_1C_ESP_WR_STATUS = 0x1c, /* 2nd function */
 148        ALS4K_IOB_1E_ESP_RD_STATUS8 = 0x1e,
 149        ALS4K_IOB_1F_ESP_RD_STATUS16 = 0x1f,
 150        ALS4K_IOB_20_ESP_GAMEPORT_200 = 0x20,
 151        ALS4K_IOB_21_ESP_GAMEPORT_201 = 0x21,
 152        ALS4K_IOB_30_MIDI_DATA = 0x30,
 153        ALS4K_IOB_31_MIDI_STATUS = 0x31,
 154        ALS4K_IOB_31_MIDI_COMMAND = 0x31, /* 2nd function */
 155};
 156
 157enum als4k_iobase_0e_t {
 158        ALS4K_IOB_0E_MPU_IRQ = 0x10,
 159        ALS4K_IOB_0E_CR1E_IRQ = 0x40,
 160        ALS4K_IOB_0E_SB_DMA_IRQ = 0x80,
 161};
 162
 163enum als4k_gcr_t { /* all registers 32bit wide; SPECS_PAGE: 38 to 42 */
 164        ALS4K_GCR8C_MISC_CTRL = 0x8c,
 165        ALS4K_GCR90_TEST_MODE_REG = 0x90,
 166        ALS4K_GCR91_DMA0_ADDR = 0x91,
 167        ALS4K_GCR92_DMA0_MODE_COUNT = 0x92,
 168        ALS4K_GCR93_DMA1_ADDR = 0x93,
 169        ALS4K_GCR94_DMA1_MODE_COUNT = 0x94,
 170        ALS4K_GCR95_DMA3_ADDR = 0x95,
 171        ALS4K_GCR96_DMA3_MODE_COUNT = 0x96,
 172        ALS4K_GCR99_DMA_EMULATION_CTRL = 0x99,
 173        ALS4K_GCRA0_FIFO1_CURRENT_ADDR = 0xa0,
 174        ALS4K_GCRA1_FIFO1_STATUS_BYTECOUNT = 0xa1,
 175        ALS4K_GCRA2_FIFO2_PCIADDR = 0xa2,
 176        ALS4K_GCRA3_FIFO2_COUNT = 0xa3,
 177        ALS4K_GCRA4_FIFO2_CURRENT_ADDR = 0xa4,
 178        ALS4K_GCRA5_FIFO1_STATUS_BYTECOUNT = 0xa5,
 179        ALS4K_GCRA6_PM_CTRL = 0xa6,
 180        ALS4K_GCRA7_PCI_ACCESS_STORAGE = 0xa7,
 181        ALS4K_GCRA8_LEGACY_CFG1 = 0xa8,
 182        ALS4K_GCRA9_LEGACY_CFG2 = 0xa9,
 183        ALS4K_GCRFF_DUMMY_SCRATCH = 0xff,
 184};
 185
 186enum als4k_gcr8c_t {
 187        ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE = 0x8000,
 188        ALS4K_GCR8C_CHIP_REV_MASK = 0xf0000
 189};
 190
 191static inline void snd_als4k_iobase_writeb(unsigned long iobase,
 192                                                enum als4k_iobase_t reg,
 193                                                u8 val)
 194{
 195        outb(val, iobase + reg);
 196}
 197
 198static inline void snd_als4k_iobase_writel(unsigned long iobase,
 199                                                enum als4k_iobase_t reg,
 200                                                u32 val)
 201{
 202        outl(val, iobase + reg);
 203}
 204
 205static inline u8 snd_als4k_iobase_readb(unsigned long iobase,
 206                                                enum als4k_iobase_t reg)
 207{
 208        return inb(iobase + reg);
 209}
 210
 211static inline u32 snd_als4k_iobase_readl(unsigned long iobase,
 212                                                enum als4k_iobase_t reg)
 213{
 214        return inl(iobase + reg);
 215}
 216
 217static inline void snd_als4k_gcr_write_addr(unsigned long iobase,
 218                                                 enum als4k_gcr_t reg,
 219                                                 u32 val)
 220{
 221        snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
 222        snd_als4k_iobase_writel(iobase, ALS4K_IOD_08_GCR_DATA, val);
 223}
 224
 225static inline void snd_als4k_gcr_write(struct snd_sb *sb,
 226                                         enum als4k_gcr_t reg,
 227                                         u32 val)
 228{
 229        snd_als4k_gcr_write_addr(sb->alt_port, reg, val);
 230}       
 231
 232static inline u32 snd_als4k_gcr_read_addr(unsigned long iobase,
 233                                                 enum als4k_gcr_t reg)
 234{
 235        /* SPECS_PAGE: 37/38 */
 236        snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
 237        return snd_als4k_iobase_readl(iobase, ALS4K_IOD_08_GCR_DATA);
 238}
 239
 240static inline u32 snd_als4k_gcr_read(struct snd_sb *sb, enum als4k_gcr_t reg)
 241{
 242        return snd_als4k_gcr_read_addr(sb->alt_port, reg);
 243}
 244
 245enum als4k_cr_t { /* all registers 8bit wide; SPECS_PAGE: 20 to 23 */
 246        ALS4K_CR0_SB_CONFIG = 0x00,
 247        ALS4K_CR2_MISC_CONTROL = 0x02,
 248        ALS4K_CR3_CONFIGURATION = 0x03,
 249        ALS4K_CR17_FIFO_STATUS = 0x17,
 250        ALS4K_CR18_ESP_MAJOR_VERSION = 0x18,
 251        ALS4K_CR19_ESP_MINOR_VERSION = 0x19,
 252        ALS4K_CR1A_MPU401_UART_MODE_CONTROL = 0x1a,
 253        ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO = 0x1c,
 254        ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI = 0x1d,
 255        ALS4K_CR1E_FIFO2_CONTROL = 0x1e, /* secondary PCM FIFO (recording) */
 256        ALS4K_CR3A_MISC_CONTROL = 0x3a,
 257        ALS4K_CR3B_CRC32_BYTE0 = 0x3b, /* for testing, activate via CR3A */
 258        ALS4K_CR3C_CRC32_BYTE1 = 0x3c,
 259        ALS4K_CR3D_CRC32_BYTE2 = 0x3d,
 260        ALS4K_CR3E_CRC32_BYTE3 = 0x3e,
 261};
 262
 263enum als4k_cr0_t {
 264        ALS4K_CR0_DMA_CONTIN_MODE_CTRL = 0x02, /* IRQ/FIFO controlled for 0/1 */
 265        ALS4K_CR0_DMA_90H_MODE_CTRL = 0x04, /* IRQ/FIFO controlled for 0/1 */
 266        ALS4K_CR0_MX80_81_REG_WRITE_ENABLE = 0x80,
 267};
 268
 269static inline void snd_als4_cr_write(struct snd_sb *chip,
 270                                        enum als4k_cr_t reg,
 271                                        u8 data)
 272{
 273        /* Control Register is reg | 0xc0 (bit 7, 6 set) on sbmixer_index
 274         * NOTE: assumes chip->mixer_lock to be locked externally already!
 275         * SPECS_PAGE: 6 */
 276        snd_sbmixer_write(chip, reg | 0xc0, data);
 277}
 278
 279static inline u8 snd_als4_cr_read(struct snd_sb *chip,
 280                                        enum als4k_cr_t reg)
 281{
 282        /* NOTE: assumes chip->mixer_lock to be locked externally already! */
 283        return snd_sbmixer_read(chip, reg | 0xc0);
 284}
 285
 286
 287
 288static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate)
 289{
 290        if (!(chip->mode & SB_RATE_LOCK)) {
 291                snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
 292                snd_sbdsp_command(chip, rate>>8);
 293                snd_sbdsp_command(chip, rate);
 294        }
 295}
 296
 297static inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
 298                                               dma_addr_t addr, unsigned size)
 299{
 300        /* SPECS_PAGE: 40 */
 301        snd_als4k_gcr_write(chip, ALS4K_GCRA2_FIFO2_PCIADDR, addr);
 302        snd_als4k_gcr_write(chip, ALS4K_GCRA3_FIFO2_COUNT, (size-1));
 303}
 304
 305static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
 306                                                dma_addr_t addr,
 307                                                unsigned size)
 308{
 309        /* SPECS_PAGE: 38 */
 310        snd_als4k_gcr_write(chip, ALS4K_GCR91_DMA0_ADDR, addr);
 311        snd_als4k_gcr_write(chip, ALS4K_GCR92_DMA0_MODE_COUNT,
 312                                                        (size-1)|0x180000);
 313}
 314
 315#define ALS4000_FORMAT_SIGNED   (1<<0)
 316#define ALS4000_FORMAT_16BIT    (1<<1)
 317#define ALS4000_FORMAT_STEREO   (1<<2)
 318
 319static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
 320{
 321        int result;
 322
 323        result = 0;
 324        if (snd_pcm_format_signed(runtime->format))
 325                result |= ALS4000_FORMAT_SIGNED;
 326        if (snd_pcm_format_physical_width(runtime->format) == 16)
 327                result |= ALS4000_FORMAT_16BIT;
 328        if (runtime->channels > 1)
 329                result |= ALS4000_FORMAT_STEREO;
 330        return result;
 331}
 332
 333/* structure for setting up playback */
 334static const struct {
 335        unsigned char dsp_cmd, dma_on, dma_off, format;
 336} playback_cmd_vals[]={
 337/* ALS4000_FORMAT_U8_MONO */
 338{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
 339/* ALS4000_FORMAT_S8_MONO */    
 340{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
 341/* ALS4000_FORMAT_U16L_MONO */
 342{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
 343/* ALS4000_FORMAT_S16L_MONO */
 344{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
 345/* ALS4000_FORMAT_U8_STEREO */
 346{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
 347/* ALS4000_FORMAT_S8_STEREO */  
 348{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
 349/* ALS4000_FORMAT_U16L_STEREO */
 350{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
 351/* ALS4000_FORMAT_S16L_STEREO */
 352{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
 353};
 354#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
 355
 356/* structure for setting up capture */
 357enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
 358static const unsigned char capture_cmd_vals[]=
 359{
 360CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
 361CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */    
 362CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
 363CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
 364CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
 365CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */  
 366CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
 367CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
 368};      
 369#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
 370
 371static int snd_als4000_hw_params(struct snd_pcm_substream *substream,
 372                                 struct snd_pcm_hw_params *hw_params)
 373{
 374        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 375}
 376
 377static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
 378{
 379        snd_pcm_lib_free_pages(substream);
 380        return 0;
 381}
 382
 383static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
 384{
 385        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 386        struct snd_pcm_runtime *runtime = substream->runtime;
 387        unsigned long size;
 388        unsigned count;
 389
 390        chip->capture_format = snd_als4000_get_format(runtime);
 391                
 392        size = snd_pcm_lib_buffer_bytes(substream);
 393        count = snd_pcm_lib_period_bytes(substream);
 394        
 395        if (chip->capture_format & ALS4000_FORMAT_16BIT)
 396                count >>= 1;
 397        count--;
 398
 399        spin_lock_irq(&chip->reg_lock);
 400        snd_als4000_set_rate(chip, runtime->rate);
 401        snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
 402        spin_unlock_irq(&chip->reg_lock);
 403        spin_lock_irq(&chip->mixer_lock);
 404        snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
 405        snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
 406        spin_unlock_irq(&chip->mixer_lock);
 407        return 0;
 408}
 409
 410static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
 411{
 412        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 413        struct snd_pcm_runtime *runtime = substream->runtime;
 414        unsigned long size;
 415        unsigned count;
 416
 417        chip->playback_format = snd_als4000_get_format(runtime);
 418        
 419        size = snd_pcm_lib_buffer_bytes(substream);
 420        count = snd_pcm_lib_period_bytes(substream);
 421        
 422        if (chip->playback_format & ALS4000_FORMAT_16BIT)
 423                count >>= 1;
 424        count--;
 425        
 426        /* FIXME: from second playback on, there's a lot more clicks and pops
 427         * involved here than on first playback. Fiddling with
 428         * tons of different settings didn't help (DMA, speaker on/off,
 429         * reordering, ...). Something seems to get enabled on playback
 430         * that I haven't found out how to disable again, which then causes
 431         * the switching pops to reach the speakers the next time here. */
 432        spin_lock_irq(&chip->reg_lock);
 433        snd_als4000_set_rate(chip, runtime->rate);
 434        snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
 435        
 436        /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
 437        /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
 438        snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
 439        snd_sbdsp_command(chip, playback_cmd(chip).format);
 440        snd_sbdsp_command(chip, count & 0xff);
 441        snd_sbdsp_command(chip, count >> 8);
 442        snd_sbdsp_command(chip, playback_cmd(chip).dma_off);    
 443        spin_unlock_irq(&chip->reg_lock);
 444        
 445        return 0;
 446}
 447
 448static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 449{
 450        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 451        int result = 0;
 452        
 453        /* FIXME race condition in here!!!
 454           chip->mode non-atomic update gets consistently protected
 455           by reg_lock always, _except_ for this place!!
 456           Probably need to take reg_lock as outer (or inner??) lock, too.
 457           (or serialize both lock operations? probably not, though... - racy?)
 458        */
 459        spin_lock(&chip->mixer_lock);
 460        switch (cmd) {
 461        case SNDRV_PCM_TRIGGER_START:
 462        case SNDRV_PCM_TRIGGER_RESUME:
 463                chip->mode |= SB_RATE_LOCK_CAPTURE;
 464                snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 465                                                         capture_cmd(chip));
 466                break;
 467        case SNDRV_PCM_TRIGGER_STOP:
 468        case SNDRV_PCM_TRIGGER_SUSPEND:
 469                chip->mode &= ~SB_RATE_LOCK_CAPTURE;
 470                snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
 471                                                         capture_cmd(chip));
 472                break;
 473        default:
 474                result = -EINVAL;
 475                break;
 476        }
 477        spin_unlock(&chip->mixer_lock);
 478        return result;
 479}
 480
 481static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 482{
 483        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 484        int result = 0;
 485
 486        spin_lock(&chip->reg_lock);
 487        switch (cmd) {
 488        case SNDRV_PCM_TRIGGER_START:
 489        case SNDRV_PCM_TRIGGER_RESUME:
 490                chip->mode |= SB_RATE_LOCK_PLAYBACK;
 491                snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
 492                break;
 493        case SNDRV_PCM_TRIGGER_STOP:
 494        case SNDRV_PCM_TRIGGER_SUSPEND:
 495                snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
 496                chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
 497                break;
 498        default:
 499                result = -EINVAL;
 500                break;
 501        }
 502        spin_unlock(&chip->reg_lock);
 503        return result;
 504}
 505
 506static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
 507{
 508        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 509        unsigned int result;
 510
 511        spin_lock(&chip->reg_lock);     
 512        result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
 513        spin_unlock(&chip->reg_lock);
 514        result &= 0xffff;
 515        return bytes_to_frames( substream->runtime, result );
 516}
 517
 518static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
 519{
 520        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 521        unsigned result;
 522
 523        spin_lock(&chip->reg_lock);     
 524        result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
 525        spin_unlock(&chip->reg_lock);
 526        result &= 0xffff;
 527        return bytes_to_frames( substream->runtime, result );
 528}
 529
 530/* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
 531 * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
 532 * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
 533 * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
 534 * register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something
 535 * could be optimized here to query/write one register only...
 536 * And even if both registers need to be queried, then there's still the
 537 * question of whether it's actually correct to ACK PCI IRQ before reading
 538 * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
 539 * SB IRQ status.
 540 * (hmm, SPECS_PAGE: 38 mentions it the other way around!)
 541 * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
 542 * */
 543static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
 544{
 545        struct snd_sb *chip = dev_id;
 546        unsigned pci_irqstatus;
 547        unsigned sb_irqstatus;
 548
 549        /* find out which bit of the ALS4000 PCI block produced the interrupt,
 550           SPECS_PAGE: 38, 5 */
 551        pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port,
 552                                 ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU);
 553        if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ)
 554         && (chip->playback_substream)) /* playback */
 555                snd_pcm_period_elapsed(chip->playback_substream);
 556        if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ)
 557         && (chip->capture_substream)) /* capturing */
 558                snd_pcm_period_elapsed(chip->capture_substream);
 559        if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ)
 560         && (chip->rmidi)) /* MPU401 interrupt */
 561                snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 562        /* ACK the PCI block IRQ */
 563        snd_als4k_iobase_writeb(chip->alt_port,
 564                         ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
 565        
 566        spin_lock(&chip->mixer_lock);
 567        /* SPECS_PAGE: 20 */
 568        sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
 569        spin_unlock(&chip->mixer_lock);
 570        
 571        if (sb_irqstatus & SB_IRQTYPE_8BIT)
 572                snd_sb_ack_8bit(chip);
 573        if (sb_irqstatus & SB_IRQTYPE_16BIT)
 574                snd_sb_ack_16bit(chip);
 575        if (sb_irqstatus & SB_IRQTYPE_MPUIN)
 576                inb(chip->mpu_port);
 577        if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA)
 578                snd_als4k_iobase_readb(chip->alt_port,
 579                                        ALS4K_IOB_16_ACK_FOR_CR1E);
 580
 581        /* printk(KERN_INFO "als4000: irq 0x%04x 0x%04x\n",
 582                                         pci_irqstatus, sb_irqstatus); */
 583
 584        /* only ack the things we actually handled above */
 585        return IRQ_RETVAL(
 586             (pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ|ALS4K_IOB_0E_CR1E_IRQ|
 587                                ALS4K_IOB_0E_MPU_IRQ))
 588          || (sb_irqstatus & (SB_IRQTYPE_8BIT|SB_IRQTYPE_16BIT|
 589                                SB_IRQTYPE_MPUIN|ALS4K_IRQTYPE_CR1E_DMA))
 590        );
 591}
 592
 593/*****************************************************************/
 594
 595static struct snd_pcm_hardware snd_als4000_playback =
 596{
 597        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 598                                 SNDRV_PCM_INFO_MMAP_VALID),
 599        .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 600                                SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 601        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 602        .rate_min =             4000,
 603        .rate_max =             48000,
 604        .channels_min =         1,
 605        .channels_max =         2,
 606        .buffer_bytes_max =     65536,
 607        .period_bytes_min =     64,
 608        .period_bytes_max =     65536,
 609        .periods_min =          1,
 610        .periods_max =          1024,
 611        .fifo_size =            0
 612};
 613
 614static struct snd_pcm_hardware snd_als4000_capture =
 615{
 616        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 617                                 SNDRV_PCM_INFO_MMAP_VALID),
 618        .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
 619                                SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
 620        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 621        .rate_min =             4000,
 622        .rate_max =             48000,
 623        .channels_min =         1,
 624        .channels_max =         2,
 625        .buffer_bytes_max =     65536,
 626        .period_bytes_min =     64,
 627        .period_bytes_max =     65536,
 628        .periods_min =          1,
 629        .periods_max =          1024,
 630        .fifo_size =            0
 631};
 632
 633/*****************************************************************/
 634
 635static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
 636{
 637        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 638        struct snd_pcm_runtime *runtime = substream->runtime;
 639
 640        chip->playback_substream = substream;
 641        runtime->hw = snd_als4000_playback;
 642        return 0;
 643}
 644
 645static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
 646{
 647        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 648
 649        chip->playback_substream = NULL;
 650        snd_pcm_lib_free_pages(substream);
 651        return 0;
 652}
 653
 654static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
 655{
 656        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 657        struct snd_pcm_runtime *runtime = substream->runtime;
 658
 659        chip->capture_substream = substream;
 660        runtime->hw = snd_als4000_capture;
 661        return 0;
 662}
 663
 664static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
 665{
 666        struct snd_sb *chip = snd_pcm_substream_chip(substream);
 667
 668        chip->capture_substream = NULL;
 669        snd_pcm_lib_free_pages(substream);
 670        return 0;
 671}
 672
 673/******************************************************************/
 674
 675static struct snd_pcm_ops snd_als4000_playback_ops = {
 676        .open =         snd_als4000_playback_open,
 677        .close =        snd_als4000_playback_close,
 678        .ioctl =        snd_pcm_lib_ioctl,
 679        .hw_params =    snd_als4000_hw_params,
 680        .hw_free =      snd_als4000_hw_free,
 681        .prepare =      snd_als4000_playback_prepare,
 682        .trigger =      snd_als4000_playback_trigger,
 683        .pointer =      snd_als4000_playback_pointer
 684};
 685
 686static struct snd_pcm_ops snd_als4000_capture_ops = {
 687        .open =         snd_als4000_capture_open,
 688        .close =        snd_als4000_capture_close,
 689        .ioctl =        snd_pcm_lib_ioctl,
 690        .hw_params =    snd_als4000_hw_params,
 691        .hw_free =      snd_als4000_hw_free,
 692        .prepare =      snd_als4000_capture_prepare,
 693        .trigger =      snd_als4000_capture_trigger,
 694        .pointer =      snd_als4000_capture_pointer
 695};
 696
 697static int __devinit snd_als4000_pcm(struct snd_sb *chip, int device)
 698{
 699        struct snd_pcm *pcm;
 700        int err;
 701
 702        err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm);
 703        if (err < 0)
 704                return err;
 705        pcm->private_data = chip;
 706        pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 707        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
 708        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
 709
 710        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 711                                              64*1024, 64*1024);
 712
 713        chip->pcm = pcm;
 714
 715        return 0;
 716}
 717
 718/******************************************************************/
 719
 720static void snd_als4000_set_addr(unsigned long iobase,
 721                                        unsigned int sb_io,
 722                                        unsigned int mpu_io,
 723                                        unsigned int opl_io,
 724                                        unsigned int game_io)
 725{
 726        u32 cfg1 = 0;
 727        u32 cfg2 = 0;
 728
 729        if (mpu_io > 0)
 730                cfg2 |= (mpu_io | 1) << 16;
 731        if (sb_io > 0)
 732                cfg2 |= (sb_io | 1);
 733        if (game_io > 0)
 734                cfg1 |= (game_io | 1) << 16;
 735        if (opl_io > 0)
 736                cfg1 |= (opl_io | 1);
 737        snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1);
 738        snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2);
 739}
 740
 741static void snd_als4000_configure(struct snd_sb *chip)
 742{
 743        u8 tmp;
 744        int i;
 745
 746        /* do some more configuration */
 747        spin_lock_irq(&chip->mixer_lock);
 748        tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
 749        snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 750                                tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 751        /* always select DMA channel 0, since we do not actually use DMA
 752         * SPECS_PAGE: 19/20 */
 753        snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
 754        snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
 755                                 tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
 756        spin_unlock_irq(&chip->mixer_lock);
 757        
 758        spin_lock_irq(&chip->reg_lock);
 759        /* enable interrupts */
 760        snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
 761                                        ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
 762
 763        /* SPECS_PAGE: 39 */
 764        for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i)
 765                snd_als4k_gcr_write(chip, i, 0);
 766        /* enable burst mode to prevent dropouts during high PCI bus usage */
 767        snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
 768                (snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04);
 769        spin_unlock_irq(&chip->reg_lock);
 770}
 771
 772#ifdef SUPPORT_JOYSTICK
 773static int __devinit snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
 774{
 775        struct gameport *gp;
 776        struct resource *r;
 777        int io_port;
 778
 779        if (joystick_port[dev] == 0)
 780                return -ENODEV;
 781
 782        if (joystick_port[dev] == 1) { /* auto-detect */
 783                for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
 784                        r = request_region(io_port, 8, "ALS4000 gameport");
 785                        if (r)
 786                                break;
 787                }
 788        } else {
 789                io_port = joystick_port[dev];
 790                r = request_region(io_port, 8, "ALS4000 gameport");
 791        }
 792
 793        if (!r) {
 794                printk(KERN_WARNING "als4000: cannot reserve joystick ports\n");
 795                return -EBUSY;
 796        }
 797
 798        acard->gameport = gp = gameport_allocate_port();
 799        if (!gp) {
 800                printk(KERN_ERR "als4000: cannot allocate memory for gameport\n");
 801                release_and_free_resource(r);
 802                return -ENOMEM;
 803        }
 804
 805        gameport_set_name(gp, "ALS4000 Gameport");
 806        gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
 807        gameport_set_dev_parent(gp, &acard->pci->dev);
 808        gp->io = io_port;
 809        gameport_set_port_data(gp, r);
 810
 811        /* Enable legacy joystick port */
 812        snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
 813
 814        gameport_register_port(acard->gameport);
 815
 816        return 0;
 817}
 818
 819static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
 820{
 821        if (acard->gameport) {
 822                struct resource *r = gameport_get_port_data(acard->gameport);
 823
 824                gameport_unregister_port(acard->gameport);
 825                acard->gameport = NULL;
 826
 827                /* disable joystick */
 828                snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
 829
 830                release_and_free_resource(r);
 831        }
 832}
 833#else
 834static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
 835static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
 836#endif
 837
 838static void snd_card_als4000_free( struct snd_card *card )
 839{
 840        struct snd_card_als4000 *acard = card->private_data;
 841
 842        /* make sure that interrupts are disabled */
 843        snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0);
 844        /* free resources */
 845        snd_als4000_free_gameport(acard);
 846        pci_release_regions(acard->pci);
 847        pci_disable_device(acard->pci);
 848}
 849
 850static int __devinit snd_card_als4000_probe(struct pci_dev *pci,
 851                                          const struct pci_device_id *pci_id)
 852{
 853        static int dev;
 854        struct snd_card *card;
 855        struct snd_card_als4000 *acard;
 856        unsigned long iobase;
 857        struct snd_sb *chip;
 858        struct snd_opl3 *opl3;
 859        unsigned short word;
 860        int err;
 861
 862        if (dev >= SNDRV_CARDS)
 863                return -ENODEV;
 864        if (!enable[dev]) {
 865                dev++;
 866                return -ENOENT;
 867        }
 868
 869        /* enable PCI device */
 870        if ((err = pci_enable_device(pci)) < 0) {
 871                return err;
 872        }
 873        /* check, if we can restrict PCI DMA transfers to 24 bits */
 874        if (pci_set_dma_mask(pci, DMA_BIT_MASK(24)) < 0 ||
 875            pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(24)) < 0) {
 876                snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
 877                pci_disable_device(pci);
 878                return -ENXIO;
 879        }
 880
 881        if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
 882                pci_disable_device(pci);
 883                return err;
 884        }
 885        iobase = pci_resource_start(pci, 0);
 886
 887        pci_read_config_word(pci, PCI_COMMAND, &word);
 888        pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
 889        pci_set_master(pci);
 890        
 891        err = snd_card_create(index[dev], id[dev], THIS_MODULE, 
 892                              sizeof(*acard) /* private_data: acard */,
 893                              &card);
 894        if (err < 0) {
 895                pci_release_regions(pci);
 896                pci_disable_device(pci);
 897                return err;
 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                                        MPU401_INFO_IRQ_HOOK,
 936                                        -1, &chip->rmidi)) < 0) {
 937                printk(KERN_ERR "als4000: no MPU-401 device at 0x%lx?\n",
 938                                iobase + ALS4K_IOB_30_MIDI_DATA);
 939                goto out_err;
 940        }
 941        /* FIXME: ALS4000 has interesting MPU401 configuration features
 942         * at ALS4K_CR1A_MPU401_UART_MODE_CONTROL
 943         * (pass-thru / UART switching, fast MIDI clock, etc.),
 944         * however there doesn't seem to be an ALSA API for this...
 945         * SPECS_PAGE: 21 */
 946
 947        if ((err = snd_als4000_pcm(chip, 0)) < 0) {
 948                goto out_err;
 949        }
 950        if ((err = snd_sbmixer_new(chip)) < 0) {
 951                goto out_err;
 952        }           
 953
 954        if (snd_opl3_create(card,
 955                                iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 956                                iobase + ALS4K_IOB_12_ADLIB_ADDR2,
 957                            OPL3_HW_AUTO, 1, &opl3) < 0) {
 958                printk(KERN_ERR "als4000: no OPL device at 0x%lx-0x%lx?\n",
 959                           iobase + ALS4K_IOB_10_ADLIB_ADDR0,
 960                           iobase + ALS4K_IOB_12_ADLIB_ADDR2);
 961        } else {
 962                if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
 963                        goto out_err;
 964                }
 965        }
 966
 967        snd_als4000_create_gameport(acard, dev);
 968
 969        if ((err = snd_card_register(card)) < 0) {
 970                goto out_err;
 971        }
 972        pci_set_drvdata(pci, card);
 973        dev++;
 974        err = 0;
 975        goto out;
 976
 977out_err:
 978        snd_card_free(card);
 979        
 980out:
 981        return err;
 982}
 983
 984static void __devexit snd_card_als4000_remove(struct pci_dev *pci)
 985{
 986        snd_card_free(pci_get_drvdata(pci));
 987        pci_set_drvdata(pci, NULL);
 988}
 989
 990#ifdef CONFIG_PM_SLEEP
 991static int snd_als4000_suspend(struct device *dev)
 992{
 993        struct pci_dev *pci = to_pci_dev(dev);
 994        struct snd_card *card = dev_get_drvdata(dev);
 995        struct snd_card_als4000 *acard = card->private_data;
 996        struct snd_sb *chip = acard->chip;
 997
 998        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 999        
1000        snd_pcm_suspend_all(chip->pcm);
1001        snd_sbmixer_suspend(chip);
1002
1003        pci_disable_device(pci);
1004        pci_save_state(pci);
1005        pci_set_power_state(pci, PCI_D3hot);
1006        return 0;
1007}
1008
1009static int snd_als4000_resume(struct device *dev)
1010{
1011        struct pci_dev *pci = to_pci_dev(dev);
1012        struct snd_card *card = dev_get_drvdata(dev);
1013        struct snd_card_als4000 *acard = card->private_data;
1014        struct snd_sb *chip = acard->chip;
1015
1016        pci_set_power_state(pci, PCI_D0);
1017        pci_restore_state(pci);
1018        if (pci_enable_device(pci) < 0) {
1019                printk(KERN_ERR "als4000: pci_enable_device failed, "
1020                       "disabling device\n");
1021                snd_card_disconnect(card);
1022                return -EIO;
1023        }
1024        pci_set_master(pci);
1025
1026        snd_als4000_configure(chip);
1027        snd_sbdsp_reset(chip);
1028        snd_sbmixer_resume(chip);
1029
1030#ifdef SUPPORT_JOYSTICK
1031        if (acard->gameport)
1032                snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
1033#endif
1034
1035        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1036        return 0;
1037}
1038
1039static SIMPLE_DEV_PM_OPS(snd_als4000_pm, snd_als4000_suspend, snd_als4000_resume);
1040#define SND_ALS4000_PM_OPS      &snd_als4000_pm
1041#else
1042#define SND_ALS4000_PM_OPS      NULL
1043#endif /* CONFIG_PM_SLEEP */
1044
1045static struct pci_driver als4000_driver = {
1046        .name = KBUILD_MODNAME,
1047        .id_table = snd_als4000_ids,
1048        .probe = snd_card_als4000_probe,
1049        .remove = __devexit_p(snd_card_als4000_remove),
1050        .driver = {
1051                .pm = SND_ALS4000_PM_OPS,
1052        },
1053};
1054
1055module_pci_driver(als4000_driver);
1056
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