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   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   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  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  *
  45  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46  *      - Optimize position calculation for the 823x chips.
  47  */
  48
  49 #include <asm/io.h>
  50 #include <linux/delay.h>
  51 #include <linux/interrupt.h>
  52 #include <linux/init.h>
  53 #include <linux/pci.h>
  54 #include <linux/slab.h>
  55 #include <linux/gameport.h>
  56 #include <linux/moduleparam.h>
  57 #include <sound/core.h>
  58 #include <sound/pcm.h>
  59 #include <sound/pcm_params.h>
  60 #include <sound/info.h>
  61 #include <sound/tlv.h>
  62 #include <sound/ac97_codec.h>
  63 #include <sound/mpu401.h>
  64 #include <sound/initval.h>
  65
  66 #if 0
  67 #define POINTER_DEBUG
  68 #endif
  69
  70 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71 MODULE_DESCRIPTION("VIA VT82xx audio");
  72 MODULE_LICENSE("GPL");
  73 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  74
  75 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  76 #define SUPPORT_JOYSTICK 1
  77 #endif
  78
  79 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81 static long mpu_port;
  82 #ifdef SUPPORT_JOYSTICK
  83 static int joystick;
  84 #endif
  85 static int ac97_clock = 48000;
  86 static char *ac97_quirk;
  87 static int dxs_support;
  88 static int nodelay;
  89
  90 module_param(index, int, 0444);
  91 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  92 module_param(id, charp, 0444);
  93 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  94 module_param(mpu_port, long, 0444);
  95 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  96 #ifdef SUPPORT_JOYSTICK
  97 module_param(joystick, bool, 0444);
  98 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  99 #endif
 100 module_param(ac97_clock, int, 0444);
 101 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 102 module_param(ac97_quirk, charp, 0444);
 103 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 104 module_param(dxs_support, int, 0444);
 105 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 106 module_param(nodelay, int, 0444);
 107 MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
 108
 109 /* just for backward compatibility */
 110 static int enable;
 111 module_param(enable, bool, 0444);
 112
 113
 114 /* revision numbers for via686 */
 115 #define VIA_REV_686_A           0x10
 116 #define VIA_REV_686_B           0x11
 117 #define VIA_REV_686_C           0x12
 118 #define VIA_REV_686_D           0x13
 119 #define VIA_REV_686_E           0x14
 120 #define VIA_REV_686_H           0x20
 121
 122 /* revision numbers for via8233 */
 123 #define VIA_REV_PRE_8233        0x10    /* not in market */
 124 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 125 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 126 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 127 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 128 #define VIA_REV_8237            0x60
 129 #define VIA_REV_8251            0x70
 130
 131 /*
 132  *  Direct registers
 133  */
 134
 135 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 136 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 137
 138 /* common offsets */
 139 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 140 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 141 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 142 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 143 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 144 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 145 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 146 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 147 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 148 #define   VIA_REG_CTRL_START            0x80    /* WO */
 149 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 150 #define   VIA_REG_CTRL_AUTOSTART        0x20
 151 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 152 #define   VIA_REG_CTRL_INT_STOP         0x04
 153 #define   VIA_REG_CTRL_INT_EOL          0x02
 154 #define   VIA_REG_CTRL_INT_FLAG         0x01
 155 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 156 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 157 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 158 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 159 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 160 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 161 #define   VIA_REG_TYPE_INT_LLINE        0x00
 162 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 163 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 164 #define   VIA_REG_TYPE_INT_MASK         0x0c
 165 #define   VIA_REG_TYPE_INT_EOL          0x02
 166 #define   VIA_REG_TYPE_INT_FLAG         0x01
 167 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 168 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 169 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 170 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 171 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 172 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 173 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 174
 175 #define DEFINE_VIA_REGSET(name,val) \
 176 enum {\
 177         VIA_REG_##name##_STATUS         = (val),\
 178         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 179         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 180         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 181         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 182         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 183         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 184 }
 185
 186 /* playback block */
 187 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 188 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 189 DEFINE_VIA_REGSET(FM, 0x20);
 190
 191 /* AC'97 */
 192 #define VIA_REG_AC97                    0x80    /* dword */
 193 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 194 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 195 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 196 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 197 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 198 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 199 #define   VIA_REG_AC97_BUSY             (1<<24)
 200 #define   VIA_REG_AC97_READ             (1<<23)
 201 #define   VIA_REG_AC97_CMD_SHIFT        16
 202 #define   VIA_REG_AC97_CMD_MASK         0x7e
 203 #define   VIA_REG_AC97_DATA_SHIFT       0
 204 #define   VIA_REG_AC97_DATA_MASK        0xffff
 205
 206 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 207 /* via686 */
 208 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 209 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 210 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 211 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 212 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 213 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 214 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 215 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 216 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 217 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 218 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 219 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 220 /* via8233 */
 221 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 222 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 223 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 224 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 225 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 226 #define   VIA8233_REG_SGD_CHAN_SDX      0
 227 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 228 #define   VIA8233_REG_SGD_CHAN_REC      6
 229 #define   VIA8233_REG_SGD_CHAN_REC1     7
 230
 231 #define VIA_REG_GPI_STATUS              0x88
 232 #define VIA_REG_GPI_INTR                0x8c
 233
 234 /* multi-channel and capture registers for via8233 */
 235 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 236 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 237
 238 /* via8233-specific registers */
 239 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 240 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 241 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 242 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 243 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 244 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 245 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 246 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 247
 248 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 249
 250 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 251 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 252 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 253 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 254
 255 #define VIA_TBL_BIT_FLAG        0x40000000
 256 #define VIA_TBL_BIT_EOL         0x80000000
 257
 258 /* pci space */
 259 #define VIA_ACLINK_STAT         0x40
 260 #define  VIA_ACLINK_C11_READY   0x20
 261 #define  VIA_ACLINK_C10_READY   0x10
 262 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 263 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 264 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 265 #define VIA_ACLINK_CTRL         0x41
 266 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 267 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 268 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 269 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 270 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 271 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 272 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 273 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 274 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 275                                  VIA_ACLINK_CTRL_RESET|\
 276                                  VIA_ACLINK_CTRL_PCM|\
 277                                  VIA_ACLINK_CTRL_VRA)
 278 #define VIA_FUNC_ENABLE         0x42
 279 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 280 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 281 #define  VIA_FUNC_RX2C_WRITE    0x20
 282 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 283 #define  VIA_FUNC_ENABLE_GAME   0x08
 284 #define  VIA_FUNC_ENABLE_FM     0x04
 285 #define  VIA_FUNC_ENABLE_MIDI   0x02
 286 #define  VIA_FUNC_ENABLE_SB     0x01
 287 #define VIA_PNP_CONTROL         0x43
 288 #define VIA_FM_NMI_CTRL         0x48
 289 #define VIA8233_VOLCHG_CTRL     0x48
 290 #define VIA8233_SPDIF_CTRL      0x49
 291 #define  VIA8233_SPDIF_DX3      0x08
 292 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 293 #define  VIA8233_SPDIF_SLOT_1011        0x00
 294 #define  VIA8233_SPDIF_SLOT_34          0x01
 295 #define  VIA8233_SPDIF_SLOT_78          0x02
 296 #define  VIA8233_SPDIF_SLOT_69          0x03
 297
 298 /*
 299  */
 300
 301 #define VIA_DXS_AUTO    0
 302 #define VIA_DXS_ENABLE  1
 303 #define VIA_DXS_DISABLE 2
 304 #define VIA_DXS_48K     3
 305 #define VIA_DXS_NO_VRA  4
 306 #define VIA_DXS_SRC     5
 307
 308
 309 /*
 310  * pcm stream
 311  */
 312
 313 struct snd_via_sg_table {
 314         unsigned int offset;
 315         unsigned int size;
 316 } ;
 317
 318 #define VIA_TABLE_SIZE  255
 319 #define VIA_MAX_BUFSIZE (1<<24)
 320
 321 struct viadev {
 322         unsigned int reg_offset;
 323         unsigned long port;
 324         int direction;  /* playback = 0, capture = 1 */
 325         struct snd_pcm_substream *substream;
 326         int running;
 327         unsigned int tbl_entries; /* # descriptors */
 328         struct snd_dma_buffer table;
 329         struct snd_via_sg_table *idx_table;
 330         /* for recovery from the unexpected pointer */
 331         unsigned int lastpos;
 332         unsigned int fragsize;
 333         unsigned int bufsize;
 334         unsigned int bufsize2;
 335         int hwptr_done;         /* processed frame position in the buffer */
 336         int in_interrupt;
 337         int shadow_shift;
 338 };
 339
 340
 341 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 342 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 343
 344 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 345
 346 struct via_rate_lock {
 347         spinlock_t lock;
 348         int rate;
 349         int used;
 350 };
 351
 352 struct via82xx {
 353         int irq;
 354
 355         unsigned long port;
 356         struct resource *mpu_res;
 357         int chip_type;
 358         unsigned char revision;
 359
 360         unsigned char old_legacy;
 361         unsigned char old_legacy_cfg;
 362 #ifdef CONFIG_PM
 363         unsigned char legacy_saved;
 364         unsigned char legacy_cfg_saved;
 365         unsigned char spdif_ctrl_saved;
 366         unsigned char capture_src_saved[2];
 367         unsigned int mpu_port_saved;
 368 #endif
 369
 370         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 371         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 372
 373         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 374
 375         struct pci_dev *pci;
 376         struct snd_card *card;
 377
 378         unsigned int num_devs;
 379         unsigned int playback_devno, multi_devno, capture_devno;
 380         struct viadev devs[VIA_MAX_DEVS];
 381         struct via_rate_lock rates[2]; /* playback and capture */
 382         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 383         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 384         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 385         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 386
 387         struct snd_pcm *pcms[2];
 388         struct snd_rawmidi *rmidi;
 389         struct snd_kcontrol *dxs_controls[4];
 390
 391         struct snd_ac97_bus *ac97_bus;
 392         struct snd_ac97 *ac97;
 393         unsigned int ac97_clock;
 394         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 395
 396         spinlock_t reg_lock;
 397         struct snd_info_entry *proc_entry;
 398
 399 #ifdef SUPPORT_JOYSTICK
 400         struct gameport *gameport;
 401 #endif
 402 };
 403
 404 static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_ids) = {
 405         /* 0x1106, 0x3058 */
 406         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 407         /* 0x1106, 0x3059 */
 408         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 409         { 0, }
 410 };
 411
 412 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 413
 414 /*
 415  */
 416
 417 /*
 418  * allocate and initialize the descriptor buffers
 419  * periods = number of periods
 420  * fragsize = period size in bytes
 421  */
 422 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 423                            struct pci_dev *pci,
 424                            unsigned int periods, unsigned int fragsize)
 425 {
 426         unsigned int i, idx, ofs, rest;
 427         struct via82xx *chip = snd_pcm_substream_chip(substream);
 428
 429         if (dev->table.area == NULL) {
 430                 /* the start of each lists must be aligned to 8 bytes,
 431                  * but the kernel pages are much bigger, so we don't care
 432                  */
 433                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 434                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 435                                         &dev->table) < 0)
 436                         return -ENOMEM;
 437         }
 438         if (! dev->idx_table) {
 439                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 440                 if (! dev->idx_table)
 441                         return -ENOMEM;
 442         }
 443
 444         /* fill the entries */
 445         idx = 0;
 446         ofs = 0;
 447         for (i = 0; i < periods; i++) {
 448                 rest = fragsize;
 449                 /* fill descriptors for a period.
 450                  * a period can be split to several descriptors if it's
 451                  * over page boundary.
 452                  */
 453                 do {
 454                         unsigned int r;
 455                         unsigned int flag;
 456                         unsigned int addr;
 457
 458                         if (idx >= VIA_TABLE_SIZE) {
 459                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 460                                 return -EINVAL;
 461                         }
 462                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 463                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 464                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 465                         rest -= r;
 466                         if (! rest) {
 467                                 if (i == periods - 1)
 468                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 469                                 else
 470                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 471                         } else
 472                                 flag = 0; /* period continues to the next */
 473                         /*
 474                         printk(KERN_DEBUG "via: tbl %d: at %d  size %d "
 475                                "(rest %d)\n", idx, ofs, r, rest);
 476                         */
 477                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 478                         dev->idx_table[idx].offset = ofs;
 479                         dev->idx_table[idx].size = r;
 480                         ofs += r;
 481                         idx++;
 482                 } while (rest > 0);
 483         }
 484         dev->tbl_entries = idx;
 485         dev->bufsize = periods * fragsize;
 486         dev->bufsize2 = dev->bufsize / 2;
 487         dev->fragsize = fragsize;
 488         return 0;
 489 }
 490
 491
 492 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 493                            struct pci_dev *pci)
 494 {
 495         if (dev->table.area) {
 496                 snd_dma_free_pages(&dev->table);
 497                 dev->table.area = NULL;
 498         }
 499         kfree(dev->idx_table);
 500         dev->idx_table = NULL;
 501         return 0;
 502 }
 503
 504 /*
 505  *  Basic I/O
 506  */
 507
 508 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 509 {
 510         return inl(VIAREG(chip, AC97));
 511 }
 512
 513 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 514 {
 515         outl(val, VIAREG(chip, AC97));
 516 }
 517
 518 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 519 {
 520         unsigned int timeout = 1000;    /* 1ms */
 521         unsigned int val;
 522
 523         while (timeout-- > 0) {
 524                 udelay(1);
 525                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 526                         return val & 0xffff;
 527         }
 528         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 529                    secondary, snd_via82xx_codec_xread(chip));
 530         return -EIO;
 531 }
 532
 533 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 534 {
 535         unsigned int timeout = 1000;    /* 1ms */
 536         unsigned int val, val1;
 537         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 538                                          VIA_REG_AC97_SECONDARY_VALID;
 539
 540         while (timeout-- > 0) {
 541                 val = snd_via82xx_codec_xread(chip);
 542                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 543                 if (val1 == stat)
 544                         return val & 0xffff;
 545                 udelay(1);
 546         }
 547         return -EIO;
 548 }
 549
 550 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 551 {
 552         struct via82xx *chip = ac97->private_data;
 553         int err;
 554         err = snd_via82xx_codec_ready(chip, ac97->num);
 555         /* here we need to wait fairly for long time.. */
 556         if (!nodelay)
 557                 msleep(500);
 558 }
 559
 560 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 561                                     unsigned short reg,
 562                                     unsigned short val)
 563 {
 564         struct via82xx *chip = ac97->private_data;
 565         unsigned int xval;
 566
 567         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 568         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 569         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 570         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 571         snd_via82xx_codec_xwrite(chip, xval);
 572         snd_via82xx_codec_ready(chip, ac97->num);
 573 }
 574
 575 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 576 {
 577         struct via82xx *chip = ac97->private_data;
 578         unsigned int xval, val = 0xffff;
 579         int again = 0;
 580
 581         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 582         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 583         xval |= VIA_REG_AC97_READ;
 584         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 585         while (1) {
 586                 if (again++ > 3) {
 587                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 588                                    ac97->num, snd_via82xx_codec_xread(chip));
 589                         return 0xffff;
 590                 }
 591                 snd_via82xx_codec_xwrite(chip, xval);
 592                 udelay (20);
 593                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 594                         udelay(25);
 595                         val = snd_via82xx_codec_xread(chip);
 596                         break;
 597                 }
 598         }
 599         return val & 0xffff;
 600 }
 601
 602 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 603 {
 604         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 605              VIADEV_REG(viadev, OFFSET_CONTROL));
 606         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 607         udelay(50);
 608         /* disable interrupts */
 609         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 610         /* clear interrupts */
 611         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 612         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 613         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 614         viadev->lastpos = 0;
 615         viadev->hwptr_done = 0;
 616 }
 617
 618
 619 /*
 620  *  Interrupt handler
 621  *  Used for 686 and 8233A
 622  */
 623 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 624 {
 625         struct via82xx *chip = dev_id;
 626         unsigned int status;
 627         unsigned int i;
 628
 629         status = inl(VIAREG(chip, SGD_SHADOW));
 630         if (! (status & chip->intr_mask)) {
 631                 if (chip->rmidi)
 632                         /* check mpu401 interrupt */
 633                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 634                 return IRQ_NONE;
 635         }
 636
 637         /* check status for each stream */
 638         spin_lock(&chip->reg_lock);
 639         for (i = 0; i < chip->num_devs; i++) {
 640                 struct viadev *viadev = &chip->devs[i];
 641                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 642                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 643                         continue;
 644                 if (viadev->substream && viadev->running) {
 645                         /*
 646                          * Update hwptr_done based on 'period elapsed'
 647                          * interrupts. We'll use it, when the chip returns 0
 648                          * for OFFSET_CURR_COUNT.
 649                          */
 650                         if (c_status & VIA_REG_STAT_EOL)
 651                                 viadev->hwptr_done = 0;
 652                         else
 653                                 viadev->hwptr_done += viadev->fragsize;
 654                         viadev->in_interrupt = c_status;
 655                         spin_unlock(&chip->reg_lock);
 656                         snd_pcm_period_elapsed(viadev->substream);
 657                         spin_lock(&chip->reg_lock);
 658                         viadev->in_interrupt = 0;
 659                 }
 660                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 661         }
 662         spin_unlock(&chip->reg_lock);
 663         return IRQ_HANDLED;
 664 }
 665
 666 /*
 667  *  Interrupt handler
 668  */
 669 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 670 {
 671         struct via82xx *chip = dev_id;
 672         unsigned int status;
 673         unsigned int i;
 674         int irqreturn = 0;
 675
 676         /* check status for each stream */
 677         spin_lock(&chip->reg_lock);
 678         status = inl(VIAREG(chip, SGD_SHADOW));
 679
 680         for (i = 0; i < chip->num_devs; i++) {
 681                 struct viadev *viadev = &chip->devs[i];
 682                 struct snd_pcm_substream *substream;
 683                 unsigned char c_status, shadow_status;
 684
 685                 shadow_status = (status >> viadev->shadow_shift) &
 686                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 687                          VIA_REG_STAT_FLAG);
 688                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 689                 if (!c_status)
 690                         continue;
 691
 692                 substream = viadev->substream;
 693                 if (substream && viadev->running) {
 694                         /*
 695                          * Update hwptr_done based on 'period elapsed'
 696                          * interrupts. We'll use it, when the chip returns 0
 697                          * for OFFSET_CURR_COUNT.
 698                          */
 699                         if (c_status & VIA_REG_STAT_EOL)
 700                                 viadev->hwptr_done = 0;
 701                         else
 702                                 viadev->hwptr_done += viadev->fragsize;
 703                         viadev->in_interrupt = c_status;
 704                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 705                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 706                         spin_unlock(&chip->reg_lock);
 707
 708                         snd_pcm_period_elapsed(substream);
 709
 710                         spin_lock(&chip->reg_lock);
 711                         viadev->in_interrupt = 0;
 712                 }
 713                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 714                 irqreturn = 1;
 715         }
 716         spin_unlock(&chip->reg_lock);
 717         return IRQ_RETVAL(irqreturn);
 718 }
 719
 720 /*
 721  *  PCM callbacks
 722  */
 723
 724 /*
 725  * trigger callback
 726  */
 727 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 728 {
 729         struct via82xx *chip = snd_pcm_substream_chip(substream);
 730         struct viadev *viadev = substream->runtime->private_data;
 731         unsigned char val;
 732
 733         if (chip->chip_type != TYPE_VIA686)
 734                 val = VIA_REG_CTRL_INT;
 735         else
 736                 val = 0;
 737         switch (cmd) {
 738         case SNDRV_PCM_TRIGGER_START:
 739         case SNDRV_PCM_TRIGGER_RESUME:
 740                 val |= VIA_REG_CTRL_START;
 741                 viadev->running = 1;
 742                 break;
 743         case SNDRV_PCM_TRIGGER_STOP:
 744         case SNDRV_PCM_TRIGGER_SUSPEND:
 745                 val = VIA_REG_CTRL_TERMINATE;
 746                 viadev->running = 0;
 747                 break;
 748         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 749                 val |= VIA_REG_CTRL_PAUSE;
 750                 viadev->running = 0;
 751                 break;
 752         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 753                 viadev->running = 1;
 754                 break;
 755         default:
 756                 return -EINVAL;
 757         }
 758         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 759         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 760                 snd_via82xx_channel_reset(chip, viadev);
 761         return 0;
 762 }
 763
 764
 765 /*
 766  * pointer callbacks
 767  */
 768
 769 /*
 770  * calculate the linear position at the given sg-buffer index and the rest count
 771  */
 772
 773 #define check_invalid_pos(viadev,pos) \
 774         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 775                                      viadev->lastpos < viadev->bufsize2))
 776
 777 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 778                                            unsigned int count)
 779 {
 780         unsigned int size, base, res;
 781
 782         size = viadev->idx_table[idx].size;
 783         base = viadev->idx_table[idx].offset;
 784         res = base + size - count;
 785         if (res >= viadev->bufsize)
 786                 res -= viadev->bufsize;
 787
 788         /* check the validity of the calculated position */
 789         if (size < count) {
 790                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 791                            (int)size, (int)count);
 792                 res = viadev->lastpos;
 793         } else {
 794                 if (! count) {
 795                         /* Some mobos report count = 0 on the DMA boundary,
 796                          * i.e. count = size indeed.
 797                          * Let's check whether this step is above the expected size.
 798                          */
 799                         int delta = res - viadev->lastpos;
 800                         if (delta < 0)
 801                                 delta += viadev->bufsize;
 802                         if ((unsigned int)delta > viadev->fragsize)
 803                                 res = base;
 804                 }
 805                 if (check_invalid_pos(viadev, res)) {
 806 #ifdef POINTER_DEBUG
 807                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 808                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 809                                "count = 0x%x\n", idx, viadev->tbl_entries,
 810                                viadev->lastpos, viadev->bufsize2,
 811                                viadev->idx_table[idx].offset,
 812                                viadev->idx_table[idx].size, count);
 813 #endif
 814                         /* count register returns full size when end of buffer is reached */
 815                         res = base + size;
 816                         if (check_invalid_pos(viadev, res)) {
 817                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 818                                            "using last valid pointer\n");
 819                                 res = viadev->lastpos;
 820                         }
 821                 }
 822         }
 823         return res;
 824 }
 825
 826 /*
 827  * get the current pointer on via686
 828  */
 829 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 830 {
 831         struct via82xx *chip = snd_pcm_substream_chip(substream);
 832         struct viadev *viadev = substream->runtime->private_data;
 833         unsigned int idx, ptr, count, res;
 834
 835         if (snd_BUG_ON(!viadev->tbl_entries))
 836                 return 0;
 837         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 838                 return 0;
 839
 840         spin_lock(&chip->reg_lock);
 841         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 842         /* The via686a does not have the current index register,
 843          * so we need to calculate the index from CURR_PTR.
 844          */
 845         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 846         if (ptr <= (unsigned int)viadev->table.addr)
 847                 idx = 0;
 848         else /* CURR_PTR holds the address + 8 */
 849                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 850         res = calc_linear_pos(viadev, idx, count);
 851         viadev->lastpos = res; /* remember the last position */
 852         spin_unlock(&chip->reg_lock);
 853
 854         return bytes_to_frames(substream->runtime, res);
 855 }
 856
 857 /*
 858  * get the current pointer on via823x
 859  */
 860 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 861 {
 862         struct via82xx *chip = snd_pcm_substream_chip(substream);
 863         struct viadev *viadev = substream->runtime->private_data;
 864         unsigned int idx, count, res;
 865         int status;
 866
 867         if (snd_BUG_ON(!viadev->tbl_entries))
 868                 return 0;
 869
 870         spin_lock(&chip->reg_lock);
 871         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 872         status = viadev->in_interrupt;
 873         if (!status)
 874                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 875
 876         /* An apparent bug in the 8251 is worked around by sending a
 877          * REG_CTRL_START. */
 878         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 879                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 880
 881         if (!(status & VIA_REG_STAT_ACTIVE)) {
 882                 res = 0;
 883                 goto unlock;
 884         }
 885         if (count & 0xffffff) {
 886                 idx = count >> 24;
 887                 if (idx >= viadev->tbl_entries) {
 888 #ifdef POINTER_DEBUG
 889                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 890                                viadev->tbl_entries);
 891 #endif
 892                         res = viadev->lastpos;
 893                 } else {
 894                         count &= 0xffffff;
 895                         res = calc_linear_pos(viadev, idx, count);
 896                 }
 897         } else {
 898                 res = viadev->hwptr_done;
 899                 if (!viadev->in_interrupt) {
 900                         if (status & VIA_REG_STAT_EOL) {
 901                                 res = 0;
 902                         } else
 903                                 if (status & VIA_REG_STAT_FLAG) {
 904                                         res += viadev->fragsize;
 905                                 }
 906                 }
 907         }
 908 unlock:
 909         viadev->lastpos = res;
 910         spin_unlock(&chip->reg_lock);
 911
 912         return bytes_to_frames(substream->runtime, res);
 913 }
 914
 915
 916 /*
 917  * hw_params callback:
 918  * allocate the buffer and build up the buffer description table
 919  */
 920 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 921                                  struct snd_pcm_hw_params *hw_params)
 922 {
 923         struct via82xx *chip = snd_pcm_substream_chip(substream);
 924         struct viadev *viadev = substream->runtime->private_data;
 925         int err;
 926
 927         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 928         if (err < 0)
 929                 return err;
 930         err = build_via_table(viadev, substream, chip->pci,
 931                               params_periods(hw_params),
 932                               params_period_bytes(hw_params));
 933         if (err < 0)
 934                 return err;
 935
 936         return 0;
 937 }
 938
 939 /*
 940  * hw_free callback:
 941  * clean up the buffer description table and release the buffer
 942  */
 943 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 944 {
 945         struct via82xx *chip = snd_pcm_substream_chip(substream);
 946         struct viadev *viadev = substream->runtime->private_data;
 947
 948         clean_via_table(viadev, substream, chip->pci);
 949         snd_pcm_lib_free_pages(substream);
 950         return 0;
 951 }
 952
 953
 954 /*
 955  * set up the table pointer
 956  */
 957 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 958 {
 959         snd_via82xx_codec_ready(chip, 0);
 960         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 961         udelay(20);
 962         snd_via82xx_codec_ready(chip, 0);
 963 }
 964
 965 /*
 966  * prepare callback for playback and capture on via686
 967  */
 968 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 969                                 struct snd_pcm_runtime *runtime)
 970 {
 971         snd_via82xx_channel_reset(chip, viadev);
 972         /* this must be set after channel_reset */
 973         snd_via82xx_set_table_ptr(chip, viadev);
 974         outb(VIA_REG_TYPE_AUTOSTART |
 975              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 976              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 977              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 978              VIA_REG_TYPE_INT_EOL |
 979              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 980 }
 981
 982 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 983 {
 984         struct via82xx *chip = snd_pcm_substream_chip(substream);
 985         struct viadev *viadev = substream->runtime->private_data;
 986         struct snd_pcm_runtime *runtime = substream->runtime;
 987
 988         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 989         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 990         via686_setup_format(chip, viadev, runtime);
 991         return 0;
 992 }
 993
 994 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 995 {
 996         struct via82xx *chip = snd_pcm_substream_chip(substream);
 997         struct viadev *viadev = substream->runtime->private_data;
 998         struct snd_pcm_runtime *runtime = substream->runtime;
 999
1000         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1001         via686_setup_format(chip, viadev, runtime);
1002         return 0;
1003 }
1004
1005 /*
1006  * lock the current rate
1007  */
1008 static int via_lock_rate(struct via_rate_lock *rec, int rate)
1009 {
1010         int changed = 0;
1011
1012         spin_lock_irq(&rec->lock);
1013         if (rec->rate != rate) {
1014                 if (rec->rate && rec->used > 1) /* already set */
1015                         changed = -EINVAL;
1016                 else {
1017                         rec->rate = rate;
1018                         changed = 1;
1019                 }
1020         }
1021         spin_unlock_irq(&rec->lock);
1022         return changed;
1023 }
1024
1025 /*
1026  * prepare callback for DSX playback on via823x
1027  */
1028 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1029 {
1030         struct via82xx *chip = snd_pcm_substream_chip(substream);
1031         struct viadev *viadev = substream->runtime->private_data;
1032         struct snd_pcm_runtime *runtime = substream->runtime;
1033         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1034         int rate_changed;
1035         u32 rbits;
1036
1037         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1038                 return rate_changed;
1039         if (rate_changed)
1040                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1041                                   chip->no_vra ? 48000 : runtime->rate);
1042         if (chip->spdif_on && viadev->reg_offset == 0x30)
1043                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1044
1045         if (runtime->rate == 48000)
1046                 rbits = 0xfffff;
1047         else
1048                 rbits = (0x100000 / 48000) * runtime->rate +
1049                         ((0x100000 % 48000) * runtime->rate) / 48000;
1050         snd_BUG_ON(rbits & ~0xfffff);
1051         snd_via82xx_channel_reset(chip, viadev);
1052         snd_via82xx_set_table_ptr(chip, viadev);
1053         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1054              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1055         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1056              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1057         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1058              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1059              rbits | /* rate */
1060              0xff000000,    /* STOP index is never reached */
1061              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1062         udelay(20);
1063         snd_via82xx_codec_ready(chip, 0);
1064         return 0;
1065 }
1066
1067 /*
1068  * prepare callback for multi-channel playback on via823x
1069  */
1070 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1071 {
1072         struct via82xx *chip = snd_pcm_substream_chip(substream);
1073         struct viadev *viadev = substream->runtime->private_data;
1074         struct snd_pcm_runtime *runtime = substream->runtime;
1075         unsigned int slots;
1076         int fmt;
1077
1078         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1079                 return -EINVAL;
1080         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1081         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1082         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1083         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1084         snd_via82xx_channel_reset(chip, viadev);
1085         snd_via82xx_set_table_ptr(chip, viadev);
1086
1087         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1088                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1089         fmt |= runtime->channels << 4;
1090         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1091 #if 0
1092         if (chip->revision == VIA_REV_8233A)
1093                 slots = 0;
1094         else
1095 #endif
1096         {
1097                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1098                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1099                 switch (runtime->channels) {
1100                 case 1: slots = (1<<0) | (1<<4); break;
1101                 case 2: slots = (1<<0) | (2<<4); break;
1102                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1103                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1104                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1105                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1106                 default: slots = 0; break;
1107                 }
1108         }
1109         /* STOP index is never reached */
1110         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1111         udelay(20);
1112         snd_via82xx_codec_ready(chip, 0);
1113         return 0;
1114 }
1115
1116 /*
1117  * prepare callback for capture on via823x
1118  */
1119 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1120 {
1121         struct via82xx *chip = snd_pcm_substream_chip(substream);
1122         struct viadev *viadev = substream->runtime->private_data;
1123         struct snd_pcm_runtime *runtime = substream->runtime;
1124
1125         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1126                 return -EINVAL;
1127         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1128         snd_via82xx_channel_reset(chip, viadev);
1129         snd_via82xx_set_table_ptr(chip, viadev);
1130         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1131         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1132              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1133              0xff000000,    /* STOP index is never reached */
1134              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1135         udelay(20);
1136         snd_via82xx_codec_ready(chip, 0);
1137         return 0;
1138 }
1139
1140
1141 /*
1142  * pcm hardware definition, identical for both playback and capture
1143  */
1144 static struct snd_pcm_hardware snd_via82xx_hw =
1145 {
1146         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1147                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1148                                  SNDRV_PCM_INFO_MMAP_VALID |
1149                                  /* SNDRV_PCM_INFO_RESUME | */
1150                                  SNDRV_PCM_INFO_PAUSE),
1151         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1152         .rates =                SNDRV_PCM_RATE_48000,
1153         .rate_min =             48000,
1154         .rate_max =             48000,
1155         .channels_min =         1,
1156         .channels_max =         2,
1157         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1158         .period_bytes_min =     32,
1159         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1160         .periods_min =          2,
1161         .periods_max =          VIA_TABLE_SIZE / 2,
1162         .fifo_size =            0,
1163 };
1164
1165
1166 /*
1167  * open callback skeleton
1168  */
1169 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1170                                 struct snd_pcm_substream *substream)
1171 {
1172         struct snd_pcm_runtime *runtime = substream->runtime;
1173         int err;
1174         struct via_rate_lock *ratep;
1175
1176         runtime->hw = snd_via82xx_hw;
1177
1178         /* set the hw rate condition */
1179         ratep = &chip->rates[viadev->direction];
1180         spin_lock_irq(&ratep->lock);
1181         ratep->used++;
1182         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1183                 /* DXS#3 and spdif is on */
1184                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1185                 snd_pcm_limit_hw_rates(runtime);
1186         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1187                 /* fixed DXS playback rate */
1188                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1189                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1190         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1191                 /* use full SRC capabilities of DXS */
1192                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1193                                      SNDRV_PCM_RATE_8000_48000);
1194                 runtime->hw.rate_min = 8000;
1195                 runtime->hw.rate_max = 48000;
1196         } else if (! ratep->rate) {
1197                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1198                 runtime->hw.rates = chip->ac97->rates[idx];
1199                 snd_pcm_limit_hw_rates(runtime);
1200         } else {
1201                 /* a fixed rate */
1202                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1203                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1204         }
1205         spin_unlock_irq(&ratep->lock);
1206
1207         /* we may remove following constaint when we modify table entries
1208            in interrupt */
1209         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1210                 return err;
1211
1212         runtime->private_data = viadev;
1213         viadev->substream = substream;
1214
1215         return 0;
1216 }
1217
1218
1219 /*
1220  * open callback for playback on via686
1221  */
1222 static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1223 {
1224         struct via82xx *chip = snd_pcm_substream_chip(substream);
1225         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1226         int err;
1227
1228         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1229                 return err;
1230         return 0;
1231 }
1232
1233 /*
1234  * open callback for playback on via823x DXS
1235  */
1236 static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1237 {
1238         struct via82xx *chip = snd_pcm_substream_chip(substream);
1239         struct viadev *viadev;
1240         unsigned int stream;
1241         int err;
1242
1243         viadev = &chip->devs[chip->playback_devno + substream->number];
1244         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1245                 return err;
1246         stream = viadev->reg_offset / 0x10;
1247         if (chip->dxs_controls[stream]) {
1248                 chip->playback_volume[stream][0] = 0;
1249                 chip->playback_volume[stream][1] = 0;
1250                 chip->dxs_controls[stream]->vd[0].access &=
1251                         ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1252                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1253                                SNDRV_CTL_EVENT_MASK_INFO,
1254                                &chip->dxs_controls[stream]->id);
1255         }
1256         return 0;
1257 }
1258
1259 /*
1260  * open callback for playback on via823x multi-channel
1261  */
1262 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1263 {
1264         struct via82xx *chip = snd_pcm_substream_chip(substream);
1265         struct viadev *viadev = &chip->devs[chip->multi_devno];
1266         int err;
1267         /* channels constraint for VIA8233A
1268          * 3 and 5 channels are not supported
1269          */
1270         static unsigned int channels[] = {
1271                 1, 2, 4, 6
1272         };
1273         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1274                 .count = ARRAY_SIZE(channels),
1275                 .list = channels,
1276                 .mask = 0,
1277         };
1278
1279         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1280                 return err;
1281         substream->runtime->hw.channels_max = 6;
1282         if (chip->revision == VIA_REV_8233A)
1283                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1284                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1285                                            &hw_constraints_channels);
1286         return 0;
1287 }
1288
1289 /*
1290  * open callback for capture on via686 and via823x
1291  */
1292 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1293 {
1294         struct via82xx *chip = snd_pcm_substream_chip(substream);
1295         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1296
1297         return snd_via82xx_pcm_open(chip, viadev, substream);
1298 }
1299
1300 /*
1301  * close callback
1302  */
1303 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1304 {
1305         struct via82xx *chip = snd_pcm_substream_chip(substream);
1306         struct viadev *viadev = substream->runtime->private_data;
1307         struct via_rate_lock *ratep;
1308
1309         /* release the rate lock */
1310         ratep = &chip->rates[viadev->direction];
1311         spin_lock_irq(&ratep->lock);
1312         ratep->used--;
1313         if (! ratep->used)
1314                 ratep->rate = 0;
1315         spin_unlock_irq(&ratep->lock);
1316         if (! ratep->rate) {
1317                 if (! viadev->direction) {
1318                         snd_ac97_update_power(chip->ac97,
1319                                               AC97_PCM_FRONT_DAC_RATE, 0);
1320                         snd_ac97_update_power(chip->ac97,
1321                                               AC97_PCM_SURR_DAC_RATE, 0);
1322                         snd_ac97_update_power(chip->ac97,
1323                                               AC97_PCM_LFE_DAC_RATE, 0);
1324                 } else
1325                         snd_ac97_update_power(chip->ac97,
1326                                               AC97_PCM_LR_ADC_RATE, 0);
1327         }
1328         viadev->substream = NULL;
1329         return 0;
1330 }
1331
1332 static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1333 {
1334         struct via82xx *chip = snd_pcm_substream_chip(substream);
1335         struct viadev *viadev = substream->runtime->private_data;
1336         unsigned int stream;
1337
1338         stream = viadev->reg_offset / 0x10;
1339         if (chip->dxs_controls[stream]) {
1340                 chip->dxs_controls[stream]->vd[0].access |=
1341                         SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1342                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1343                                &chip->dxs_controls[stream]->id);
1344         }
1345         return snd_via82xx_pcm_close(substream);
1346 }
1347
1348
1349 /* via686 playback callbacks */
1350 static struct snd_pcm_ops snd_via686_playback_ops = {
1351         .open =         snd_via686_playback_open,
1352         .close =        snd_via82xx_pcm_close,
1353         .ioctl =        snd_pcm_lib_ioctl,
1354         .hw_params =    snd_via82xx_hw_params,
1355         .hw_free =      snd_via82xx_hw_free,
1356         .prepare =      snd_via686_playback_prepare,
1357         .trigger =      snd_via82xx_pcm_trigger,
1358         .pointer =      snd_via686_pcm_pointer,
1359         .page =         snd_pcm_sgbuf_ops_page,
1360 };
1361
1362 /* via686 capture callbacks */
1363 static struct snd_pcm_ops snd_via686_capture_ops = {
1364         .open =         snd_via82xx_capture_open,
1365         .close =        snd_via82xx_pcm_close,
1366         .ioctl =        snd_pcm_lib_ioctl,
1367         .hw_params =    snd_via82xx_hw_params,
1368         .hw_free =      snd_via82xx_hw_free,
1369         .prepare =      snd_via686_capture_prepare,
1370         .trigger =      snd_via82xx_pcm_trigger,
1371         .pointer =      snd_via686_pcm_pointer,
1372         .page =         snd_pcm_sgbuf_ops_page,
1373 };
1374
1375 /* via823x DSX playback callbacks */
1376 static struct snd_pcm_ops snd_via8233_playback_ops = {
1377         .open =         snd_via8233_playback_open,
1378         .close =        snd_via8233_playback_close,
1379         .ioctl =        snd_pcm_lib_ioctl,
1380         .hw_params =    snd_via82xx_hw_params,
1381         .hw_free =      snd_via82xx_hw_free,
1382         .prepare =      snd_via8233_playback_prepare,
1383         .trigger =      snd_via82xx_pcm_trigger,
1384         .pointer =      snd_via8233_pcm_pointer,
1385         .page =         snd_pcm_sgbuf_ops_page,
1386 };
1387
1388 /* via823x multi-channel playback callbacks */
1389 static struct snd_pcm_ops snd_via8233_multi_ops = {
1390         .open =         snd_via8233_multi_open,
1391         .close =        snd_via82xx_pcm_close,
1392         .ioctl =        snd_pcm_lib_ioctl,
1393         .hw_params =    snd_via82xx_hw_params,
1394         .hw_free =      snd_via82xx_hw_free,
1395         .prepare =      snd_via8233_multi_prepare,
1396         .trigger =      snd_via82xx_pcm_trigger,
1397         .pointer =      snd_via8233_pcm_pointer,
1398         .page =         snd_pcm_sgbuf_ops_page,
1399 };
1400
1401 /* via823x capture callbacks */
1402 static struct snd_pcm_ops snd_via8233_capture_ops = {
1403         .open =         snd_via82xx_capture_open,
1404         .close =        snd_via82xx_pcm_close,
1405         .ioctl =        snd_pcm_lib_ioctl,
1406         .hw_params =    snd_via82xx_hw_params,
1407         .hw_free =      snd_via82xx_hw_free,
1408         .prepare =      snd_via8233_capture_prepare,
1409         .trigger =      snd_via82xx_pcm_trigger,
1410         .pointer =      snd_via8233_pcm_pointer,
1411         .page =         snd_pcm_sgbuf_ops_page,
1412 };
1413
1414
1415 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1416                         int shadow_pos, int direction)
1417 {
1418         chip->devs[idx].reg_offset = reg_offset;
1419         chip->devs[idx].shadow_shift = shadow_pos * 4;
1420         chip->devs[idx].direction = direction;
1421         chip->devs[idx].port = chip->port + reg_offset;
1422 }
1423
1424 /*
1425  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1426  */
1427 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1428 {
1429         struct snd_pcm *pcm;
1430         int i, err;
1431
1432         chip->playback_devno = 0;       /* x 4 */
1433         chip->multi_devno = 4;          /* x 1 */
1434         chip->capture_devno = 5;        /* x 2 */
1435         chip->num_devs = 7;
1436         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1437
1438         /* PCM #0:  4 DSX playbacks and 1 capture */
1439         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1440         if (err < 0)
1441                 return err;
1442         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1443         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1444         pcm->private_data = chip;
1445         strcpy(pcm->name, chip->card->shortname);
1446         chip->pcms[0] = pcm;
1447         /* set up playbacks */
1448         for (i = 0; i < 4; i++)
1449                 init_viadev(chip, i, 0x10 * i, i, 0);
1450         /* capture */
1451         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1452
1453         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1454                                               snd_dma_pci_data(chip->pci),
1455                                               64*1024, VIA_MAX_BUFSIZE);
1456
1457         /* PCM #1:  multi-channel playback and 2nd capture */
1458         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1459         if (err < 0)
1460                 return err;
1461         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1462         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1463         pcm->private_data = chip;
1464         strcpy(pcm->name, chip->card->shortname);
1465         chip->pcms[1] = pcm;
1466         /* set up playback */
1467         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1468         /* set up capture */
1469         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1470
1471         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1472                                               snd_dma_pci_data(chip->pci),
1473                                               64*1024, VIA_MAX_BUFSIZE);
1474         return 0;
1475 }
1476
1477 /*
1478  * create pcm instances for VIA8233A
1479  */
1480 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1481 {
1482         struct snd_pcm *pcm;
1483         int err;
1484
1485         chip->multi_devno = 0;
1486         chip->playback_devno = 1;
1487         chip->capture_devno = 2;
1488         chip->num_devs = 3;
1489         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1490
1491         /* PCM #0:  multi-channel playback and capture */
1492         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1493         if (err < 0)
1494                 return err;
1495         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1496         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1497         pcm->private_data = chip;
1498         strcpy(pcm->name, chip->card->shortname);
1499         chip->pcms[0] = pcm;
1500         /* set up playback */
1501         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1502         /* capture */
1503         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1504
1505         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1506                                               snd_dma_pci_data(chip->pci),
1507                                               64*1024, VIA_MAX_BUFSIZE);
1508
1509         /* SPDIF supported? */
1510         if (! ac97_can_spdif(chip->ac97))
1511                 return 0;
1512
1513         /* PCM #1:  DXS3 playback (for spdif) */
1514         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1515         if (err < 0)
1516                 return err;
1517         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1518         pcm->private_data = chip;
1519         strcpy(pcm->name, chip->card->shortname);
1520         chip->pcms[1] = pcm;
1521         /* set up playback */
1522         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1523
1524         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1525                                               snd_dma_pci_data(chip->pci),
1526                                               64*1024, VIA_MAX_BUFSIZE);
1527         return 0;
1528 }
1529
1530 /*
1531  * create a pcm instance for via686a/b
1532  */
1533 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1534 {
1535         struct snd_pcm *pcm;
1536         int err;
1537
1538         chip->playback_devno = 0;
1539         chip->capture_devno = 1;
1540         chip->num_devs = 2;
1541         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1542
1543         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1544         if (err < 0)
1545                 return err;
1546         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1547         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1548         pcm->private_data = chip;
1549         strcpy(pcm->name, chip->card->shortname);
1550         chip->pcms[0] = pcm;
1551         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1552         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1553
1554         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1555                                               snd_dma_pci_data(chip->pci),
1556                                               64*1024, VIA_MAX_BUFSIZE);
1557         return 0;
1558 }
1559
1560
1561 /*
1562  *  Mixer part
1563  */
1564
1565 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1566                                            struct snd_ctl_elem_info *uinfo)
1567 {
1568         /* formerly they were "Line" and "Mic", but it looks like that they
1569          * have nothing to do with the actual physical connections...
1570          */
1571         static char *texts[2] = {
1572                 "Input1", "Input2"
1573         };
1574         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1575         uinfo->count = 1;
1576         uinfo->value.enumerated.items = 2;
1577         if (uinfo->value.enumerated.item >= 2)
1578                 uinfo->value.enumerated.item = 1;
1579         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1580         return 0;
1581 }
1582
1583 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1584                                           struct snd_ctl_elem_value *ucontrol)
1585 {
1586         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1587         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1588         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1589         return 0;
1590 }
1591
1592 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1593                                           struct snd_ctl_elem_value *ucontrol)
1594 {
1595         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1596         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1597         u8 val, oval;
1598
1599         spin_lock_irq(&chip->reg_lock);
1600         oval = inb(port);
1601         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1602         if (ucontrol->value.enumerated.item[0])
1603                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1604         if (val != oval)
1605                 outb(val, port);
1606         spin_unlock_irq(&chip->reg_lock);
1607         return val != oval;
1608 }
1609
1610 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1611         .name = "Input Source Select",
1612         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1613         .info = snd_via8233_capture_source_info,
1614         .get = snd_via8233_capture_source_get,
1615         .put = snd_via8233_capture_source_put,
1616 };
1617
1618 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1619
1620 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1621                                       struct snd_ctl_elem_value *ucontrol)
1622 {
1623         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1624         u8 val;
1625
1626         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1627         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1628         return 0;
1629 }
1630
1631 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1632                                       struct snd_ctl_elem_value *ucontrol)
1633 {
1634         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1635         u8 val, oval;
1636
1637         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1638         val = oval & ~VIA8233_SPDIF_DX3;
1639         if (ucontrol->value.integer.value[0])
1640                 val |= VIA8233_SPDIF_DX3;
1641         /* save the spdif flag for rate filtering */
1642         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1643         if (val != oval) {
1644                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1645                 return 1;
1646         }
1647         return 0;
1648 }
1649
1650 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1651         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1652         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1653         .info = snd_via8233_dxs3_spdif_info,
1654         .get = snd_via8233_dxs3_spdif_get,
1655         .put = snd_via8233_dxs3_spdif_put,
1656 };
1657
1658 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1659                                        struct snd_ctl_elem_info *uinfo)
1660 {
1661         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1662         uinfo->count = 2;
1663         uinfo->value.integer.min = 0;
1664         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1665         return 0;
1666 }
1667
1668 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1669                                       struct snd_ctl_elem_value *ucontrol)
1670 {
1671         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1672         unsigned int idx = kcontrol->id.subdevice;
1673
1674         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1675         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1676         return 0;
1677 }
1678
1679 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1680                                          struct snd_ctl_elem_value *ucontrol)
1681 {
1682         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1683         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1684         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1685         return 0;
1686 }
1687
1688 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1689                                       struct snd_ctl_elem_value *ucontrol)
1690 {
1691         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1692         unsigned int idx = kcontrol->id.subdevice;
1693         unsigned long port = chip->port + 0x10 * idx;
1694         unsigned char val;
1695         int i, change = 0;
1696
1697         for (i = 0; i < 2; i++) {
1698                 val = ucontrol->value.integer.value[i];
1699                 if (val > VIA_DXS_MAX_VOLUME)
1700                         val = VIA_DXS_MAX_VOLUME;
1701                 val = VIA_DXS_MAX_VOLUME - val;
1702                 change |= val != chip->playback_volume[idx][i];
1703                 if (change) {
1704                         chip->playback_volume[idx][i] = val;
1705                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1706                 }
1707         }
1708         return change;
1709 }
1710
1711 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1712                                          struct snd_ctl_elem_value *ucontrol)
1713 {
1714         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1715         unsigned int idx;
1716         unsigned char val;
1717         int i, change = 0;
1718
1719         for (i = 0; i < 2; i++) {
1720                 val = ucontrol->value.integer.value[i];
1721                 if (val > VIA_DXS_MAX_VOLUME)
1722                         val = VIA_DXS_MAX_VOLUME;
1723                 val = VIA_DXS_MAX_VOLUME - val;
1724                 if (val != chip->playback_volume_c[i]) {
1725                         change = 1;
1726                         chip->playback_volume_c[i] = val;
1727                         for (idx = 0; idx < 4; idx++) {
1728                                 unsigned long port = chip->port + 0x10 * idx;
1729                                 chip->playback_volume[idx][i] = val;
1730                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1731                         }
1732                 }
1733         }
1734         return change;
1735 }
1736
1737 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1738
1739 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1740         .name = "PCM Playback Volume",
1741         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1742         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1743                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1744         .info = snd_via8233_dxs_volume_info,
1745         .get = snd_via8233_pcmdxs_volume_get,
1746         .put = snd_via8233_pcmdxs_volume_put,
1747         .tlv = { .p = db_scale_dxs }
1748 };
1749
1750 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1751         .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1752         .device = 0,
1753         /* .subdevice set later */
1754         .name = "PCM Playback Volume",
1755         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1756                   SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1757                   SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1758         .info = snd_via8233_dxs_volume_info,
1759         .get = snd_via8233_dxs_volume_get,
1760         .put = snd_via8233_dxs_volume_put,
1761         .tlv = { .p = db_scale_dxs }
1762 };
1763
1764 /*
1765  */
1766
1767 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1768 {
1769         struct via82xx *chip = bus->private_data;
1770         chip->ac97_bus = NULL;
1771 }
1772
1773 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1774 {
1775         struct via82xx *chip = ac97->private_data;
1776         chip->ac97 = NULL;
1777 }
1778
1779 static struct ac97_quirk ac97_quirks[] = {
1780         {
1781                 .subvendor = 0x1106,
1782                 .subdevice = 0x4161,
1783                 .codec_id = 0x56494161, /* VT1612A */
1784                 .name = "Soltek SL-75DRV5",
1785                 .type = AC97_TUNE_NONE
1786         },
1787         {       /* FIXME: which codec? */
1788                 .subvendor = 0x1106,
1789                 .subdevice = 0x4161,
1790                 .name = "ASRock K7VT2",
1791                 .type = AC97_TUNE_HP_ONLY
1792         },
1793         {
1794                 .subvendor = 0x1019,
1795                 .subdevice = 0x0a81,
1796                 .name = "ECS K7VTA3",
1797                 .type = AC97_TUNE_HP_ONLY
1798         },
1799         {
1800                 .subvendor = 0x1019,
1801                 .subdevice = 0x0a85,
1802                 .name = "ECS L7VMM2",
1803                 .type = AC97_TUNE_HP_ONLY
1804         },
1805         {
1806                 .subvendor = 0x1019,
1807                 .subdevice = 0x1841,
1808                 .name = "ECS K7VTA3",
1809                 .type = AC97_TUNE_HP_ONLY
1810         },
1811         {
1812                 .subvendor = 0x1849,
1813                 .subdevice = 0x3059,
1814                 .name = "ASRock K7VM2",
1815                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1816         },
1817         {
1818                 .subvendor = 0x14cd,
1819                 .subdevice = 0x7002,
1820                 .name = "Unknown",
1821                 .type = AC97_TUNE_ALC_JACK
1822         },
1823         {
1824                 .subvendor = 0x1071,
1825                 .subdevice = 0x8590,
1826                 .name = "Mitac Mobo",
1827                 .type = AC97_TUNE_ALC_JACK
1828         },
1829         {
1830                 .subvendor = 0x161f,
1831                 .subdevice = 0x202b,
1832                 .name = "Arima Notebook",
1833                 .type = AC97_TUNE_HP_ONLY,
1834         },
1835         {
1836                 .subvendor = 0x161f,
1837                 .subdevice = 0x2032,
1838                 .name = "Targa Traveller 811",
1839                 .type = AC97_TUNE_HP_ONLY,
1840         },
1841         {
1842                 .subvendor = 0x161f,
1843                 .subdevice = 0x2032,
1844                 .name = "m680x",
1845                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1846         },
1847         {
1848                 .subvendor = 0x1297,
1849                 .subdevice = 0xa232,
1850                 .name = "Shuttle AK32VN",
1851                 .type = AC97_TUNE_HP_ONLY
1852         },
1853         { } /* terminator */
1854 };
1855
1856 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1857 {
1858         struct snd_ac97_template ac97;
1859         int err;
1860         static struct snd_ac97_bus_ops ops = {
1861                 .write = snd_via82xx_codec_write,
1862                 .read = snd_via82xx_codec_read,
1863                 .wait = snd_via82xx_codec_wait,
1864         };
1865
1866         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1867                 return err;
1868         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1869         chip->ac97_bus->clock = chip->ac97_clock;
1870
1871         memset(&ac97, 0, sizeof(ac97));
1872         ac97.private_data = chip;
1873         ac97.private_free = snd_via82xx_mixer_free_ac97;
1874         ac97.pci = chip->pci;
1875         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1876         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1877                 return err;
1878
1879         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1880
1881         if (chip->chip_type != TYPE_VIA686) {
1882                 /* use slot 10/11 */
1883                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1884         }
1885
1886         return 0;
1887 }
1888
1889 #ifdef SUPPORT_JOYSTICK
1890 #define JOYSTICK_ADDR   0x200
1891 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1892 {
1893         struct gameport *gp;
1894         struct resource *r;
1895
1896         if (!joystick)
1897                 return -ENODEV;
1898
1899         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1900         if (!r) {
1901                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1902                        JOYSTICK_ADDR);
1903                 return -EBUSY;
1904         }
1905
1906         chip->gameport = gp = gameport_allocate_port();
1907         if (!gp) {
1908                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1909                 release_and_free_resource(r);
1910                 return -ENOMEM;
1911         }
1912
1913         gameport_set_name(gp, "VIA686 Gameport");
1914         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1915         gameport_set_dev_parent(gp, &chip->pci->dev);
1916         gp->io = JOYSTICK_ADDR;
1917         gameport_set_port_data(gp, r);
1918
1919         /* Enable legacy joystick port */
1920         *legacy |= VIA_FUNC_ENABLE_GAME;
1921         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1922
1923         gameport_register_port(chip->gameport);
1924
1925         return 0;
1926 }
1927
1928 static void snd_via686_free_gameport(struct via82xx *chip)
1929 {
1930         if (chip->gameport) {
1931                 struct resource *r = gameport_get_port_data(chip->gameport);
1932
1933                 gameport_unregister_port(chip->gameport);
1934                 chip->gameport = NULL;
1935                 release_and_free_resource(r);
1936         }
1937 }
1938 #else
1939 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1940 {
1941         return -ENOSYS;
1942 }
1943 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1944 #endif
1945
1946
1947 /*
1948  *
1949  */
1950
1951 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1952 {
1953         int i, err, caps;
1954         unsigned char val;
1955
1956         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1957         for (i = 0; i < caps; i++) {
1958                 snd_via8233_capture_source.index = i;
1959                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1960                 if (err < 0)
1961                         return err;
1962         }
1963         if (ac97_can_spdif(chip->ac97)) {
1964                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1965                 if (err < 0)
1966                         return err;
1967         }
1968         if (chip->chip_type != TYPE_VIA8233A) {
1969                 /* when no h/w PCM volume control is found, use DXS volume control
1970                  * as the PCM vol control
1971                  */
1972                 struct snd_ctl_elem_id sid;
1973                 memset(&sid, 0, sizeof(sid));
1974                 strcpy(sid.name, "PCM Playback Volume");
1975                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1976                 if (! snd_ctl_find_id(chip->card, &sid)) {
1977                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1978                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1979                         if (err < 0)
1980                                 return err;
1981                 }
1982                 else /* Using DXS when PCM emulation is enabled is really weird */
1983                 {
1984                         for (i = 0; i < 4; ++i) {
1985                                 struct snd_kcontrol *kctl;
1986
1987                                 kctl = snd_ctl_new1(
1988                                         &snd_via8233_dxs_volume_control, chip);
1989                                 if (!kctl)
1990                                         return -ENOMEM;
1991                                 kctl->id.subdevice = i;
1992                                 err = snd_ctl_add(chip->card, kctl);
1993                                 if (err < 0)
1994                                         return err;
1995                                 chip->dxs_controls[i] = kctl;
1996                         }
1997                 }
1998         }
1999         /* select spdif data slot 10/11 */
2000         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2001         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2002         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2003         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2004
2005         return 0;
2006 }
2007
2008 static int __devinit snd_via686_init_misc(struct via82xx *chip)
2009 {
2010         unsigned char legacy, legacy_cfg;
2011         int rev_h = 0;
2012
2013         legacy = chip->old_legacy;
2014         legacy_cfg = chip->old_legacy_cfg;
2015         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2016         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2017         if (chip->revision >= VIA_REV_686_H) {
2018                 rev_h = 1;
2019                 if (mpu_port >= 0x200) {        /* force MIDI */
2020                         mpu_port &= 0xfffc;
2021                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2022 #ifdef CONFIG_PM
2023                         chip->mpu_port_saved = mpu_port;
2024 #endif
2025                 } else {
2026                         mpu_port = pci_resource_start(chip->pci, 2);
2027                 }
2028         } else {
2029                 switch (mpu_port) {     /* force MIDI */
2030                 case 0x300:
2031                 case 0x310:
2032                 case 0x320:
2033                 case 0x330:
2034                         legacy_cfg &= ~(3 << 2);
2035                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
2036                         break;
2037                 default:                        /* no, use BIOS settings */
2038                         if (legacy & VIA_FUNC_ENABLE_MIDI)
2039                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2040                         break;
2041                 }
2042         }
2043         if (mpu_port >= 0x200 &&
2044             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2045             != NULL) {
2046                 if (rev_h)
2047                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2048                 legacy |= VIA_FUNC_ENABLE_MIDI;
2049         } else {
2050                 if (rev_h)
2051                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2052                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
2053                 mpu_port = 0;
2054         }
2055
2056         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2057         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2058         if (chip->mpu_res) {
2059                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2060                                         mpu_port, MPU401_INFO_INTEGRATED,
2061                                         chip->irq, 0, &chip->rmidi) < 0) {
2062                         printk(KERN_WARNING "unable to initialize MPU-401"
2063                                " at 0x%lx, skipping\n", mpu_port);
2064                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2065                 } else {
2066                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2067                 }
2068                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2069         }
2070
2071         snd_via686_create_gameport(chip, &legacy);
2072
2073 #ifdef CONFIG_PM
2074         chip->legacy_saved = legacy;
2075         chip->legacy_cfg_saved = legacy_cfg;
2076 #endif
2077
2078         return 0;
2079 }
2080
2081
2082 /*
2083  * proc interface
2084  */
2085 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2086                                   struct snd_info_buffer *buffer)
2087 {
2088         struct via82xx *chip = entry->private_data;
2089         int i;
2090
2091         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2092         for (i = 0; i < 0xa0; i += 4) {
2093                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2094         }
2095 }
2096
2097 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2098 {
2099         struct snd_info_entry *entry;
2100
2101         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2102                 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2103 }
2104
2105 /*
2106  *
2107  */
2108
2109 static int snd_via82xx_chip_init(struct via82xx *chip)
2110 {
2111         unsigned int val;
2112         unsigned long end_time;
2113         unsigned char pval;
2114
2115 #if 0 /* broken on K7M? */
2116         if (chip->chip_type == TYPE_VIA686)
2117                 /* disable all legacy ports */
2118                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2119 #endif
2120         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2121         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2122                 /* deassert ACLink reset, force SYNC */
2123                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2124                                       VIA_ACLINK_CTRL_ENABLE |
2125                                       VIA_ACLINK_CTRL_RESET |
2126                                       VIA_ACLINK_CTRL_SYNC);
2127                 udelay(100);
2128 #if 1 /* FIXME: should we do full reset here for all chip models? */
2129                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2130                 udelay(100);
2131 #else
2132                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2133                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2134                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2135                 udelay(2);
2136 #endif
2137                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2138                 /* note - FM data out has trouble with non VRA codecs !! */
2139                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2140                 udelay(100);
2141         }
2142
2143         /* Make sure VRA is enabled, in case we didn't do a
2144          * complete codec reset, above */
2145         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2146         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2147                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2148                 /* note - FM data out has trouble with non VRA codecs !! */
2149                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2150                 udelay(100);
2151         }
2152
2153         /* wait until codec ready */
2154         end_time = jiffies + msecs_to_jiffies(750);
2155         do {
2156                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2157                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2158                         break;
2159                 schedule_timeout_uninterruptible(1);
2160         } while (time_before(jiffies, end_time));
2161
2162         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2163                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2164
2165 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2166         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2167                                  VIA_REG_AC97_SECONDARY_VALID |
2168                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2169         end_time = jiffies + msecs_to_jiffies(750);
2170         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2171                                  VIA_REG_AC97_SECONDARY_VALID |
2172                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2173         do {
2174                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2175                         chip->ac97_secondary = 1;
2176                         goto __ac97_ok2;
2177                 }
2178                 schedule_timeout_uninterruptible(1);
2179         } while (time_before(jiffies, end_time));
2180         /* This is ok, the most of motherboards have only one codec */
2181
2182       __ac97_ok2:
2183 #endif
2184
2185         if (chip->chip_type == TYPE_VIA686) {
2186                 /* route FM trap to IRQ, disable FM trap */
2187                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2188                 /* disable all GPI interrupts */
2189                 outl(0, VIAREG(chip, GPI_INTR));
2190         }
2191
2192         if (chip->chip_type != TYPE_VIA686) {
2193                 /* Workaround for Award BIOS bug:
2194                  * DXS channels don't work properly with VRA if MC97 is disabled.
2195                  */
2196                 struct pci_dev *pci;
2197                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2198                 if (pci) {
2199                         unsigned char data;
2200                         pci_read_config_byte(pci, 0x44, &data);
2201                         pci_write_config_byte(pci, 0x44, data | 0x40);
2202                         pci_dev_put(pci);
2203                 }
2204         }
2205
2206         if (chip->chip_type != TYPE_VIA8233A) {
2207                 int i, idx;
2208                 for (idx = 0; idx < 4; idx++) {
2209                         unsigned long port = chip->port + 0x10 * idx;
2210                         for (i = 0; i < 2; i++) {
2211                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2212                                 outb(chip->playback_volume_c[i],
2213                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2214                         }
2215                 }
2216         }
2217
2218         return 0;
2219 }
2220
2221 #ifdef CONFIG_PM
2222 /*
2223  * power management
2224  */
2225 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2226 {
2227         struct snd_card *card = pci_get_drvdata(pci);
2228         struct via82xx *chip = card->private_data;
2229         int i;
2230
2231         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2232         for (i = 0; i < 2; i++)
2233                 snd_pcm_suspend_all(chip->pcms[i]);
2234         for (i = 0; i < chip->num_devs; i++)
2235                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2236         synchronize_irq(chip->irq);
2237         snd_ac97_suspend(chip->ac97);
2238
2239         /* save misc values */
2240         if (chip->chip_type != TYPE_VIA686) {
2241                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2242                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2243                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2244         }
2245
2246         pci_disable_device(pci);
2247         pci_save_state(pci);
2248         pci_set_power_state(pci, pci_choose_state(pci, state));
2249         return 0;
2250 }
2251
2252 static int snd_via82xx_resume(struct pci_dev *pci)
2253 {
2254         struct snd_card *card = pci_get_drvdata(pci);
2255         struct via82xx *chip = card->private_data;
2256         int i;
2257
2258         pci_set_power_state(pci, PCI_D0);
2259         pci_restore_state(pci);
2260         if (pci_enable_device(pci) < 0) {
2261                 printk(KERN_ERR "via82xx: pci_enable_device failed, "
2262                        "disabling device\n");
2263                 snd_card_disconnect(card);
2264                 return -EIO;
2265         }
2266         pci_set_master(pci);
2267
2268         snd_via82xx_chip_init(chip);
2269
2270         if (chip->chip_type == TYPE_VIA686) {
2271                 if (chip->mpu_port_saved)
2272                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2273                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2274                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2275         } else {
2276                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2277                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2278                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2279         }
2280
2281         snd_ac97_resume(chip->ac97);
2282
2283         for (i = 0; i < chip->num_devs; i++)
2284                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2285
2286         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2287         return 0;
2288 }
2289 #endif /* CONFIG_PM */
2290
2291 static int snd_via82xx_free(struct via82xx *chip)
2292 {
2293         unsigned int i;
2294
2295         if (chip->irq < 0)
2296                 goto __end_hw;
2297         /* disable interrupts */
2298         for (i = 0; i < chip->num_devs; i++)
2299                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2300
2301         if (chip->irq >= 0)
2302                 free_irq(chip->irq, chip);
2303  __end_hw:
2304         release_and_free_resource(chip->mpu_res);
2305         pci_release_regions(chip->pci);
2306
2307         if (chip->chip_type == TYPE_VIA686) {
2308                 snd_via686_free_gameport(chip);
2309                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2310                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2311         }
2312         pci_disable_device(chip->pci);
2313         kfree(chip);
2314         return 0;
2315 }
2316
2317 static int snd_via82xx_dev_free(struct snd_device *device)
2318 {
2319         struct via82xx *chip = device->device_data;
2320         return snd_via82xx_free(chip);
2321 }
2322
2323 static int __devinit snd_via82xx_create(struct snd_card *card,
2324                                         struct pci_dev *pci,
2325                                         int chip_type,
2326                                         int revision,
2327                                         unsigned int ac97_clock,
2328                                         struct via82xx ** r_via)
2329 {
2330         struct via82xx *chip;
2331         int err;
2332         static struct snd_device_ops ops = {
2333                 .dev_free =     snd_via82xx_dev_free,
2334         };
2335
2336         if ((err = pci_enable_device(pci)) < 0)
2337                 return err;
2338
2339         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2340                 pci_disable_device(pci);
2341                 return -ENOMEM;
2342         }
2343
2344         chip->chip_type = chip_type;
2345         chip->revision = revision;
2346
2347         spin_lock_init(&chip->reg_lock);
2348         spin_lock_init(&chip->rates[0].lock);
2349         spin_lock_init(&chip->rates[1].lock);
2350         chip->card = card;
2351         chip->pci = pci;
2352         chip->irq = -1;
2353
2354         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2355         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2356         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2357                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2358
2359         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2360                 kfree(chip);
2361                 pci_disable_device(pci);
2362                 return err;
2363         }
2364         chip->port = pci_resource_start(pci, 0);
2365         if (request_irq(pci->irq,
2366                         chip_type == TYPE_VIA8233 ?
2367                         snd_via8233_interrupt : snd_via686_interrupt,
2368                         IRQF_SHARED,
2369                         card->driver, chip)) {
2370                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2371                 snd_via82xx_free(chip);
2372                 return -EBUSY;
2373         }
2374         chip->irq = pci->irq;
2375         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2376                 chip->ac97_clock = ac97_clock;
2377         synchronize_irq(chip->irq);
2378
2379         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2380                 snd_via82xx_free(chip);
2381                 return err;
2382         }
2383
2384         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2385                 snd_via82xx_free(chip);
2386                 return err;
2387         }
2388
2389         /* The 8233 ac97 controller does not implement the master bit
2390          * in the pci command register. IMHO this is a violation of the PCI spec.
2391          * We call pci_set_master here because it does not hurt. */
2392         pci_set_master(pci);
2393
2394         snd_card_set_dev(card, &pci->dev);
2395
2396         *r_via = chip;
2397         return 0;
2398 }
2399
2400 struct via823x_info {
2401         int revision;
2402         char *name;
2403         int type;
2404 };
2405 static struct via823x_info via823x_cards[] __devinitdata = {
2406         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2407         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2408         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2409         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2410         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2411         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2412         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2413 };
2414
2415 /*
2416  * auto detection of DXS channel supports.
2417  */
2418
2419 static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2420         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2421         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2422         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2423         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2424         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2425         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2426         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2427         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2428         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2429         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2430         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2431         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2432         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2433         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2434         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2435         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2436         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2437         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2438         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2439         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2440         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2441         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2442         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2443         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2444         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2445         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2446         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2447         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2448         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2449         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2450         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2451         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2452         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2453         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2454         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2455         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2456         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2457         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2458         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2459         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2460         { } /* terminator */
2461 };
2462
2463 static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2464 {
2465         const struct snd_pci_quirk *w;
2466
2467         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2468         if (w) {
2469                 snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2470                             w->name);
2471                 return w->value;
2472         }
2473
2474         /* for newer revision, default to DXS_SRC */
2475         if (revision >= VIA_REV_8235)
2476                 return VIA_DXS_SRC;
2477
2478         /*
2479          * not detected, try 48k rate only to be sure.
2480          */
2481         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2482         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2483         printk(KERN_INFO "         and report if it works on your machine.\n");
2484         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2485         return VIA_DXS_48K;
2486 };
2487
2488 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2489                                        const struct pci_device_id *pci_id)
2490 {
2491         struct snd_card *card;
2492         struct via82xx *chip;
2493         int chip_type = 0, card_type;
2494         unsigned int i;
2495         int err;
2496
2497         err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2498         if (err < 0)
2499                 return err;
2500
2501         card_type = pci_id->driver_data;
2502         switch (card_type) {
2503         case TYPE_CARD_VIA686:
2504                 strcpy(card->driver, "VIA686A");
2505                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2506                 chip_type = TYPE_VIA686;
2507                 break;
2508         case TYPE_CARD_VIA8233:
2509                 chip_type = TYPE_VIA8233;
2510                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2511                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2512                         if (pci->revision == via823x_cards[i].revision) {
2513                                 chip_type = via823x_cards[i].type;
2514                                 strcpy(card->shortname, via823x_cards[i].name);
2515                                 break;
2516                         }
2517                 }
2518                 if (chip_type != TYPE_VIA8233A) {
2519                         if (dxs_support == VIA_DXS_AUTO)
2520                                 dxs_support = check_dxs_list(pci, pci->revision);
2521                         /* force to use VIA8233 or 8233A model according to
2522                          * dxs_support module option
2523                          */
2524                         if (dxs_support == VIA_DXS_DISABLE)
2525                                 chip_type = TYPE_VIA8233A;
2526                         else
2527                                 chip_type = TYPE_VIA8233;
2528                 }
2529                 if (chip_type == TYPE_VIA8233A)
2530                         strcpy(card->driver, "VIA8233A");
2531                 else if (pci->revision >= VIA_REV_8237)
2532                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2533                 else
2534                         strcpy(card->driver, "VIA8233");
2535                 break;
2536         default:
2537                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2538                 err = -EINVAL;
2539                 goto __error;
2540         }
2541
2542         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2543                                       ac97_clock, &chip)) < 0)
2544                 goto __error;
2545         card->private_data = chip;
2546         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2547                 goto __error;
2548
2549         if (chip_type == TYPE_VIA686) {
2550                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2551                     (err = snd_via686_init_misc(chip)) < 0)
2552                         goto __error;
2553         } else {
2554                 if (chip_type == TYPE_VIA8233A) {
2555                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2556                                 goto __error;
2557                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2558                 } else {
2559                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2560                                 goto __error;
2561                         if (dxs_support == VIA_DXS_48K)
2562                                 chip->dxs_fixed = 1;
2563                         else if (dxs_support == VIA_DXS_NO_VRA)
2564                                 chip->no_vra = 1;
2565                         else if (dxs_support == VIA_DXS_SRC) {
2566                                 chip->no_vra = 1;
2567                                 chip->dxs_src = 1;
2568                         }
2569                 }
2570                 if ((err = snd_via8233_init_misc(chip)) < 0)
2571                         goto __error;
2572         }
2573
2574         /* disable interrupts */
2575         for (i = 0; i < chip->num_devs; i++)
2576                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2577
2578         snprintf(card->longname, sizeof(card->longname),
2579                  "%s with %s at %#lx, irq %d", card->shortname,
2580                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2581
2582         snd_via82xx_proc_init(chip);
2583
2584         if ((err = snd_card_register(card)) < 0) {
2585                 snd_card_free(card);
2586                 return err;
2587         }
2588         pci_set_drvdata(pci, card);
2589         return 0;
2590
2591  __error:
2592         snd_card_free(card);
2593         return err;
2594 }
2595
2596 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2597 {
2598         snd_card_free(pci_get_drvdata(pci));
2599         pci_set_drvdata(pci, NULL);
2600 }
2601
2602 static struct pci_driver driver = {
2603         .name = "VIA 82xx Audio",
2604         .id_table = snd_via82xx_ids,
2605         .probe = snd_via82xx_probe,
2606         .remove = __devexit_p(snd_via82xx_remove),
2607 #ifdef CONFIG_PM
2608         .suspend = snd_via82xx_suspend,
2609         .resume = snd_via82xx_resume,
2610 #endif
2611 };
2612
2613 static int __init alsa_card_via82xx_init(void)
2614 {
2615         return pci_register_driver(&driver);
2616 }
2617
2618 static void __exit alsa_card_via82xx_exit(void)
2619 {
2620         pci_unregister_driver(&driver);
2621 }
2622
2623 module_init(alsa_card_via82xx_init)
2624 module_exit(alsa_card_via82xx_exit)