sound/pci/via82xx.c

   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@suse.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
  46 #include <sound/driver.h>
  47 #include <asm/io.h>
  48 #include <linux/delay.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/init.h>
  51 #include <linux/pci.h>
  52 #include <linux/slab.h>
  53 #include <linux/gameport.h>
  54 #include <linux/moduleparam.h>
  55 #include <sound/core.h>
  56 #include <sound/pcm.h>
  57 #include <sound/pcm_params.h>
  58 #include <sound/info.h>
  59 #include <sound/ac97_codec.h>
  60 #include <sound/mpu401.h>
  61 #include <sound/initval.h>
  62
  63 #if 0
  64 #define POINTER_DEBUG
  65 #endif
  66
  67 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  68 MODULE_DESCRIPTION("VIA VT82xx audio");
  69 MODULE_LICENSE("GPL");
  70 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  71
  72 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  73 #define SUPPORT_JOYSTICK 1
  74 #endif
  75
  76 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  77 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  78 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  79 static long mpu_port[SNDRV_CARDS];
  80 #ifdef SUPPORT_JOYSTICK
  81 static int joystick[SNDRV_CARDS];
  82 #endif
  83 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
  84 static char *ac97_quirk[SNDRV_CARDS];
  85 static int dxs_support[SNDRV_CARDS];
  86
  87 module_param_array(index, int, NULL, 0444);
  88 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  89 module_param_array(id, charp, NULL, 0444);
  90 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  91 module_param_array(enable, bool, NULL, 0444);
  92 MODULE_PARM_DESC(enable, "Enable audio part of VIA 82xx bridge.");
  93 module_param_array(mpu_port, long, NULL, 0444);
  94 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  95 #ifdef SUPPORT_JOYSTICK
  96 module_param_array(joystick, bool, NULL, 0444);
  97 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  98 #endif
  99 module_param_array(ac97_clock, int, NULL, 0444);
 100 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 101 module_param_array(ac97_quirk, charp, NULL, 0444);
 102 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 103 module_param_array(dxs_support, int, NULL, 0444);
 104 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)");
 105
 106
 107 /* pci ids */
 108 #ifndef PCI_DEVICE_ID_VIA_82C686_5
 109 #define PCI_DEVICE_ID_VIA_82C686_5      0x3058
 110 #endif
 111 #ifndef PCI_DEVICE_ID_VIA_8233_5
 112 #define PCI_DEVICE_ID_VIA_8233_5        0x3059
 113 #endif
 114
 115 /* revision numbers for via686 */
 116 #define VIA_REV_686_A           0x10
 117 #define VIA_REV_686_B           0x11
 118 #define VIA_REV_686_C           0x12
 119 #define VIA_REV_686_D           0x13
 120 #define VIA_REV_686_E           0x14
 121 #define VIA_REV_686_H           0x20
 122
 123 /* revision numbers for via8233 */
 124 #define VIA_REV_PRE_8233        0x10    /* not in market */
 125 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 126 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 127 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 128 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 129 #define VIA_REV_8237            0x60
 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   VIA_REG_STAT_PAUSED           0x40    /* RO */
 142 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 143 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 144 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 145 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 146 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 147 #define   VIA_REG_CTRL_START            0x80    /* WO */
 148 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 149 #define   VIA_REG_CTRL_AUTOSTART        0x20
 150 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 151 #define   VIA_REG_CTRL_INT_STOP         0x04
 152 #define   VIA_REG_CTRL_INT_EOL          0x02
 153 #define   VIA_REG_CTRL_INT_FLAG         0x01
 154 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 155 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 156 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 157 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 158 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 159 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 160 #define   VIA_REG_TYPE_INT_LLINE        0x00
 161 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 162 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 163 #define   VIA_REG_TYPE_INT_MASK         0x0c
 164 #define   VIA_REG_TYPE_INT_EOL          0x02
 165 #define   VIA_REG_TYPE_INT_FLAG         0x01
 166 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 167 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 168 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 169 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 170 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 171 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 172 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 173
 174 #define DEFINE_VIA_REGSET(name,val) \
 175 enum {\
 176         VIA_REG_##name##_STATUS         = (val),\
 177         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 178         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 179         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 180         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 181         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 182         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 183 }
 184
 185 /* playback block */
 186 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 187 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 188 DEFINE_VIA_REGSET(FM, 0x20);
 189
 190 /* AC'97 */
 191 #define VIA_REG_AC97                    0x80    /* dword */
 192 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 193 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 194 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 195 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 196 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 197 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 198 #define   VIA_REG_AC97_BUSY             (1<<24)
 199 #define   VIA_REG_AC97_READ             (1<<23)
 200 #define   VIA_REG_AC97_CMD_SHIFT        16
 201 #define   VIA_REG_AC97_CMD_MASK         0x7e
 202 #define   VIA_REG_AC97_DATA_SHIFT       0
 203 #define   VIA_REG_AC97_DATA_MASK        0xffff
 204
 205 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 206 /* via686 */
 207 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 208 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 209 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 210 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 211 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 212 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 213 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 214 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 215 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 216 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 217 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 218 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 219 /* via8233 */
 220 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 221 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 222 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 223 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 224 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 225 #define   VIA8233_REG_SGD_CHAN_SDX      0
 226 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 227 #define   VIA8233_REG_SGD_CHAN_REC      6
 228 #define   VIA8233_REG_SGD_CHAN_REC1     7
 229
 230 #define VIA_REG_GPI_STATUS              0x88
 231 #define VIA_REG_GPI_INTR                0x8c
 232
 233 /* multi-channel and capture registers for via8233 */
 234 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 235 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 236
 237 /* via8233-specific registers */
 238 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 239 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 240 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 241 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 242 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 243 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 244 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 245 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 246
 247 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 248
 249 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 250 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 251 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 252 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 253
 254 #define VIA_TBL_BIT_FLAG        0x40000000
 255 #define VIA_TBL_BIT_EOL         0x80000000
 256
 257 /* pci space */
 258 #define VIA_ACLINK_STAT         0x40
 259 #define  VIA_ACLINK_C11_READY   0x20
 260 #define  VIA_ACLINK_C10_READY   0x10
 261 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 262 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 263 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 264 #define VIA_ACLINK_CTRL         0x41
 265 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 266 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 267 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 268 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 269 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 270 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 271 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 272 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 273 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 274                                  VIA_ACLINK_CTRL_RESET|\
 275                                  VIA_ACLINK_CTRL_PCM|\
 276                                  VIA_ACLINK_CTRL_VRA)
 277 #define VIA_FUNC_ENABLE         0x42
 278 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 279 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 280 #define  VIA_FUNC_RX2C_WRITE    0x20
 281 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 282 #define  VIA_FUNC_ENABLE_GAME   0x08
 283 #define  VIA_FUNC_ENABLE_FM     0x04
 284 #define  VIA_FUNC_ENABLE_MIDI   0x02
 285 #define  VIA_FUNC_ENABLE_SB     0x01
 286 #define VIA_PNP_CONTROL         0x43
 287 #define VIA_FM_NMI_CTRL         0x48
 288 #define VIA8233_VOLCHG_CTRL     0x48
 289 #define VIA8233_SPDIF_CTRL      0x49
 290 #define  VIA8233_SPDIF_DX3      0x08
 291 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 292 #define  VIA8233_SPDIF_SLOT_1011        0x00
 293 #define  VIA8233_SPDIF_SLOT_34          0x01
 294 #define  VIA8233_SPDIF_SLOT_78          0x02
 295 #define  VIA8233_SPDIF_SLOT_69          0x03
 296
 297 /*
 298  */
 299
 300 #define VIA_DXS_AUTO    0
 301 #define VIA_DXS_ENABLE  1
 302 #define VIA_DXS_DISABLE 2
 303 #define VIA_DXS_48K     3
 304 #define VIA_DXS_NO_VRA  4
 305 #define VIA_DXS_SRC     5
 306
 307
 308 /*
 309  */
 310
 311 typedef struct _snd_via82xx via82xx_t;
 312 typedef struct via_dev viadev_t;
 313
 314 /*
 315  * pcm stream
 316  */
 317
 318 struct snd_via_sg_table {
 319         unsigned int offset;
 320         unsigned int size;
 321 } ;
 322
 323 #define VIA_TABLE_SIZE  255
 324
 325 struct via_dev {
 326         unsigned int reg_offset;
 327         unsigned long port;
 328         int direction;  /* playback = 0, capture = 1 */
 329         snd_pcm_substream_t *substream;
 330         int running;
 331         unsigned int tbl_entries; /* # descriptors */
 332         struct snd_dma_buffer table;
 333         struct snd_via_sg_table *idx_table;
 334         /* for recovery from the unexpected pointer */
 335         unsigned int lastpos;
 336         unsigned int fragsize;
 337         unsigned int bufsize;
 338         unsigned int bufsize2;
 339 };
 340
 341
 342 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 343 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 344
 345 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 346
 347 struct via_rate_lock {
 348         spinlock_t lock;
 349         int rate;
 350         int used;
 351 };
 352
 353 struct _snd_via82xx {
 354         int irq;
 355
 356         unsigned long port;
 357         struct resource *mpu_res;
 358         int chip_type;
 359         unsigned char revision;
 360
 361         unsigned char old_legacy;
 362         unsigned char old_legacy_cfg;
 363 #ifdef CONFIG_PM
 364         unsigned char legacy_saved;
 365         unsigned char legacy_cfg_saved;
 366         unsigned char spdif_ctrl_saved;
 367         unsigned char capture_src_saved[2];
 368         unsigned int mpu_port_saved;
 369 #endif
 370
 371         unsigned char playback_volume[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         snd_card_t *card;
 377
 378         unsigned int num_devs;
 379         unsigned int playback_devno, multi_devno, capture_devno;
 380         viadev_t 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         snd_pcm_t *pcms[2];
 388         snd_rawmidi_t *rmidi;
 389
 390         ac97_bus_t *ac97_bus;
 391         ac97_t *ac97;
 392         unsigned int ac97_clock;
 393         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 394
 395         spinlock_t reg_lock;
 396         snd_info_entry_t *proc_entry;
 397
 398 #ifdef SUPPORT_JOYSTICK
 399         struct gameport *gameport;
 400 #endif
 401 };
 402
 403 static struct pci_device_id snd_via82xx_ids[] = {
 404         { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },    /* 686A */
 405         { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },   /* VT8233 */
 406         { 0, }
 407 };
 408
 409 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 410
 411 /*
 412  */
 413
 414 /*
 415  * allocate and initialize the descriptor buffers
 416  * periods = number of periods
 417  * fragsize = period size in bytes
 418  */
 419 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 420                            struct pci_dev *pci,
 421                            unsigned int periods, unsigned int fragsize)
 422 {
 423         unsigned int i, idx, ofs, rest;
 424         via82xx_t *chip = snd_pcm_substream_chip(substream);
 425         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 426
 427         if (dev->table.area == NULL) {
 428                 /* the start of each lists must be aligned to 8 bytes,
 429                  * but the kernel pages are much bigger, so we don't care
 430                  */
 431                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 432                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 433                                         &dev->table) < 0)
 434                         return -ENOMEM;
 435         }
 436         if (! dev->idx_table) {
 437                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 438                 if (! dev->idx_table)
 439                         return -ENOMEM;
 440         }
 441
 442         /* fill the entries */
 443         idx = 0;
 444         ofs = 0;
 445         for (i = 0; i < periods; i++) {
 446                 rest = fragsize;
 447                 /* fill descriptors for a period.
 448                  * a period can be split to several descriptors if it's
 449                  * over page boundary.
 450                  */
 451                 do {
 452                         unsigned int r;
 453                         unsigned int flag;
 454
 455                         if (idx >= VIA_TABLE_SIZE) {
 456                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 457                                 return -EINVAL;
 458                         }
 459                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 460                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 461                         if (rest < r)
 462                                 r = rest;
 463                         rest -= r;
 464                         if (! rest) {
 465                                 if (i == periods - 1)
 466                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 467                                 else
 468                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 469                         } else
 470                                 flag = 0; /* period continues to the next */
 471                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 472                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 473                         dev->idx_table[idx].offset = ofs;
 474                         dev->idx_table[idx].size = r;
 475                         ofs += r;
 476                         idx++;
 477                 } while (rest > 0);
 478         }
 479         dev->tbl_entries = idx;
 480         dev->bufsize = periods * fragsize;
 481         dev->bufsize2 = dev->bufsize / 2;
 482         dev->fragsize = fragsize;
 483         return 0;
 484 }
 485
 486
 487 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 488                            struct pci_dev *pci)
 489 {
 490         if (dev->table.area) {
 491                 snd_dma_free_pages(&dev->table);
 492                 dev->table.area = NULL;
 493         }
 494         kfree(dev->idx_table);
 495         dev->idx_table = NULL;
 496         return 0;
 497 }
 498
 499 /*
 500  *  Basic I/O
 501  */
 502
 503 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
 504 {
 505         return inl(VIAREG(chip, AC97));
 506 }
 507
 508 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
 509 {
 510         outl(val, VIAREG(chip, AC97));
 511 }
 512
 513 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
 514 {
 515         unsigned int timeout = 1000;    /* 1ms */
 516         unsigned int val;
 517
 518         while (timeout-- > 0) {
 519                 udelay(1);
 520                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 521                         return val & 0xffff;
 522         }
 523         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
 524         return -EIO;
 525 }
 526
 527 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
 528 {
 529         unsigned int timeout = 1000;    /* 1ms */
 530         unsigned int val, val1;
 531         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 532                                          VIA_REG_AC97_SECONDARY_VALID;
 533
 534         while (timeout-- > 0) {
 535                 val = snd_via82xx_codec_xread(chip);
 536                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 537                 if (val1 == stat)
 538                         return val & 0xffff;
 539                 udelay(1);
 540         }
 541         return -EIO;
 542 }
 543
 544 static void snd_via82xx_codec_wait(ac97_t *ac97)
 545 {
 546         via82xx_t *chip = ac97->private_data;
 547         int err;
 548         err = snd_via82xx_codec_ready(chip, ac97->num);
 549         /* here we need to wait fairly for long time.. */
 550         msleep(500);
 551 }
 552
 553 static void snd_via82xx_codec_write(ac97_t *ac97,
 554                                     unsigned short reg,
 555                                     unsigned short val)
 556 {
 557         via82xx_t *chip = ac97->private_data;
 558         unsigned int xval;
 559
 560         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 561         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 562         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 563         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 564         snd_via82xx_codec_xwrite(chip, xval);
 565         snd_via82xx_codec_ready(chip, ac97->num);
 566 }
 567
 568 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 569 {
 570         via82xx_t *chip = ac97->private_data;
 571         unsigned int xval, val = 0xffff;
 572         int again = 0;
 573
 574         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 575         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 576         xval |= VIA_REG_AC97_READ;
 577         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 578         while (1) {
 579                 if (again++ > 3) {
 580                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 581                         return 0xffff;
 582                 }
 583                 snd_via82xx_codec_xwrite(chip, xval);
 584                 udelay (20);
 585                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 586                         udelay(25);
 587                         val = snd_via82xx_codec_xread(chip);
 588                         break;
 589                 }
 590         }
 591         return val & 0xffff;
 592 }
 593
 594 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 595 {
 596         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 597              VIADEV_REG(viadev, OFFSET_CONTROL));
 598         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 599         udelay(50);
 600         /* disable interrupts */
 601         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 602         /* clear interrupts */
 603         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 604         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 605         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 606         viadev->lastpos = 0;
 607 }
 608
 609
 610 /*
 611  *  Interrupt handler
 612  */
 613
 614 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 615 {
 616         via82xx_t *chip = dev_id;
 617         unsigned int status;
 618         unsigned int i;
 619
 620         status = inl(VIAREG(chip, SGD_SHADOW));
 621         if (! (status & chip->intr_mask)) {
 622                 if (chip->rmidi)
 623                         /* check mpu401 interrupt */
 624                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 625                 return IRQ_NONE;
 626         }
 627
 628         /* check status for each stream */
 629         spin_lock(&chip->reg_lock);
 630         for (i = 0; i < chip->num_devs; i++) {
 631                 viadev_t *viadev = &chip->devs[i];
 632                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 633                 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
 634                 if (! c_status)
 635                         continue;
 636                 if (viadev->substream && viadev->running) {
 637                         spin_unlock(&chip->reg_lock);
 638                         snd_pcm_period_elapsed(viadev->substream);
 639                         spin_lock(&chip->reg_lock);
 640                 }
 641                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 642         }
 643         spin_unlock(&chip->reg_lock);
 644         return IRQ_HANDLED;
 645 }
 646
 647 /*
 648  *  PCM callbacks
 649  */
 650
 651 /*
 652  * trigger callback
 653  */
 654 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 655 {
 656         via82xx_t *chip = snd_pcm_substream_chip(substream);
 657         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 658         unsigned char val;
 659
 660         if (chip->chip_type != TYPE_VIA686)
 661                 val = VIA_REG_CTRL_INT;
 662         else
 663                 val = 0;
 664         switch (cmd) {
 665         case SNDRV_PCM_TRIGGER_START:
 666                 val |= VIA_REG_CTRL_START;
 667                 viadev->running = 1;
 668                 break;
 669         case SNDRV_PCM_TRIGGER_STOP:
 670                 val = VIA_REG_CTRL_TERMINATE;
 671                 viadev->running = 0;
 672                 break;
 673         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 674                 val |= VIA_REG_CTRL_PAUSE;
 675                 viadev->running = 0;
 676                 break;
 677         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 678                 viadev->running = 1;
 679                 break;
 680         default:
 681                 return -EINVAL;
 682         }
 683         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 684         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 685                 snd_via82xx_channel_reset(chip, viadev);
 686         return 0;
 687 }
 688
 689
 690 /*
 691  * pointer callbacks
 692  */
 693
 694 /*
 695  * calculate the linear position at the given sg-buffer index and the rest count
 696  */
 697
 698 #define check_invalid_pos(viadev,pos) \
 699         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 700
 701 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 702 {
 703         unsigned int size, base, res;
 704
 705         size = viadev->idx_table[idx].size;
 706         base = viadev->idx_table[idx].offset;
 707         res = base + size - count;
 708
 709         /* check the validity of the calculated position */
 710         if (size < count) {
 711                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 712                 res = viadev->lastpos;
 713         } else {
 714                 if (! count) {
 715                         /* Some mobos report count = 0 on the DMA boundary,
 716                          * i.e. count = size indeed.
 717                          * Let's check whether this step is above the expected size.
 718                          */
 719                         int delta = res - viadev->lastpos;
 720                         if (delta < 0)
 721                                 delta += viadev->bufsize;
 722                         if ((unsigned int)delta > viadev->fragsize)
 723                                 res = base;
 724                 }
 725                 if (check_invalid_pos(viadev, res)) {
 726 #ifdef POINTER_DEBUG
 727                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count);
 728 #endif
 729                         /* count register returns full size when end of buffer is reached */
 730                         res = base + size;
 731                         if (check_invalid_pos(viadev, res)) {
 732                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 733                                 res = viadev->lastpos;
 734                         }
 735                 }
 736         }
 737         viadev->lastpos = res; /* remember the last position */
 738         if (res >= viadev->bufsize)
 739                 res -= viadev->bufsize;
 740         return res;
 741 }
 742
 743 /*
 744  * get the current pointer on via686
 745  */
 746 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 747 {
 748         via82xx_t *chip = snd_pcm_substream_chip(substream);
 749         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 750         unsigned int idx, ptr, count, res;
 751
 752         snd_assert(viadev->tbl_entries, return 0);
 753         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 754                 return 0;
 755
 756         spin_lock(&chip->reg_lock);
 757         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 758         /* The via686a does not have the current index register,
 759          * so we need to calculate the index from CURR_PTR.
 760          */
 761         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 762         if (ptr <= (unsigned int)viadev->table.addr)
 763                 idx = 0;
 764         else /* CURR_PTR holds the address + 8 */
 765                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 766         res = calc_linear_pos(viadev, idx, count);
 767         spin_unlock(&chip->reg_lock);
 768
 769         return bytes_to_frames(substream->runtime, res);
 770 }
 771
 772 /*
 773  * get the current pointer on via823x
 774  */
 775 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 776 {
 777         via82xx_t *chip = snd_pcm_substream_chip(substream);
 778         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 779         unsigned int idx, count, res;
 780         int timeout = 5000;
 781
 782         snd_assert(viadev->tbl_entries, return 0);
 783         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 784                 return 0;
 785         spin_lock(&chip->reg_lock);
 786         do {
 787                 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 788                 /* some mobos read 0 count */
 789                 if ((count & 0xffffff) || ! viadev->running)
 790                         break;
 791         } while (--timeout);
 792         if (! timeout)
 793                 snd_printd(KERN_ERR "zero position is read\n");
 794         idx = count >> 24;
 795         if (idx >= viadev->tbl_entries) {
 796 #ifdef POINTER_DEBUG
 797                 printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 798 #endif
 799                 res = viadev->lastpos;
 800         } else {
 801                 count &= 0xffffff;
 802                 res = calc_linear_pos(viadev, idx, count);
 803         }
 804         spin_unlock(&chip->reg_lock);
 805
 806         return bytes_to_frames(substream->runtime, res);
 807 }
 808
 809
 810 /*
 811  * hw_params callback:
 812  * allocate the buffer and build up the buffer description table
 813  */
 814 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 815                                  snd_pcm_hw_params_t * hw_params)
 816 {
 817         via82xx_t *chip = snd_pcm_substream_chip(substream);
 818         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 819         int err;
 820
 821         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 822         if (err < 0)
 823                 return err;
 824         err = build_via_table(viadev, substream, chip->pci,
 825                               params_periods(hw_params),
 826                               params_period_bytes(hw_params));
 827         if (err < 0)
 828                 return err;
 829
 830         return 0;
 831 }
 832
 833 /*
 834  * hw_free callback:
 835  * clean up the buffer description table and release the buffer
 836  */
 837 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 838 {
 839         via82xx_t *chip = snd_pcm_substream_chip(substream);
 840         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 841
 842         clean_via_table(viadev, substream, chip->pci);
 843         snd_pcm_lib_free_pages(substream);
 844         return 0;
 845 }
 846
 847
 848 /*
 849  * set up the table pointer
 850  */
 851 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 852 {
 853         snd_via82xx_codec_ready(chip, 0);
 854         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 855         udelay(20);
 856         snd_via82xx_codec_ready(chip, 0);
 857 }
 858
 859 /*
 860  * prepare callback for playback and capture on via686
 861  */
 862 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 863 {
 864         snd_via82xx_channel_reset(chip, viadev);
 865         /* this must be set after channel_reset */
 866         snd_via82xx_set_table_ptr(chip, viadev);
 867         outb(VIA_REG_TYPE_AUTOSTART |
 868              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 869              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 870              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 871              VIA_REG_TYPE_INT_EOL |
 872              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 873 }
 874
 875 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 876 {
 877         via82xx_t *chip = snd_pcm_substream_chip(substream);
 878         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 879         snd_pcm_runtime_t *runtime = substream->runtime;
 880
 881         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 882         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 883         via686_setup_format(chip, viadev, runtime);
 884         return 0;
 885 }
 886
 887 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 888 {
 889         via82xx_t *chip = snd_pcm_substream_chip(substream);
 890         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 891         snd_pcm_runtime_t *runtime = substream->runtime;
 892
 893         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 894         via686_setup_format(chip, viadev, runtime);
 895         return 0;
 896 }
 897
 898 /*
 899  * lock the current rate
 900  */
 901 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 902 {
 903         int changed = 0;
 904
 905         spin_lock_irq(&rec->lock);
 906         if (rec->rate != rate) {
 907                 if (rec->rate && rec->used > 1) /* already set */
 908                         changed = -EINVAL;
 909                 else {
 910                         rec->rate = rate;
 911                         changed = 1;
 912                 }
 913         }
 914         spin_unlock_irq(&rec->lock);
 915         return changed;
 916 }
 917
 918 /*
 919  * prepare callback for DSX playback on via823x
 920  */
 921 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
 922 {
 923         via82xx_t *chip = snd_pcm_substream_chip(substream);
 924         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 925         snd_pcm_runtime_t *runtime = substream->runtime;
 926         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
 927         int rate_changed;
 928         u32 rbits;
 929
 930         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
 931                 return rate_changed;
 932         if (rate_changed) {
 933                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
 934                                   chip->no_vra ? 48000 : runtime->rate);
 935                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF,
 936                                   chip->no_vra ? 48000 : runtime->rate);
 937         }
 938         if (runtime->rate == 48000)
 939                 rbits = 0xfffff;
 940         else
 941                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
 942         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
 943         snd_via82xx_channel_reset(chip, viadev);
 944         snd_via82xx_set_table_ptr(chip, viadev);
 945         outb(chip->playback_volume[0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
 946         outb(chip->playback_volume[1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
 947         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 948              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
 949              rbits | /* rate */
 950              0xff000000,    /* STOP index is never reached */
 951              VIADEV_REG(viadev, OFFSET_STOP_IDX));
 952         udelay(20);
 953         snd_via82xx_codec_ready(chip, 0);
 954         return 0;
 955 }
 956
 957 /*
 958  * prepare callback for multi-channel playback on via823x
 959  */
 960 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
 961 {
 962         via82xx_t *chip = snd_pcm_substream_chip(substream);
 963         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 964         snd_pcm_runtime_t *runtime = substream->runtime;
 965         unsigned int slots;
 966         int fmt;
 967
 968         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
 969                 return -EINVAL;
 970         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 971         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
 972         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
 973         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 974         snd_via82xx_channel_reset(chip, viadev);
 975         snd_via82xx_set_table_ptr(chip, viadev);
 976
 977         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
 978         fmt |= runtime->channels << 4;
 979         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
 980 #if 0
 981         if (chip->revision == VIA_REV_8233A)
 982                 slots = 0;
 983         else
 984 #endif
 985         {
 986                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
 987                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
 988                 switch (runtime->channels) {
 989                 case 1: slots = (1<<0) | (1<<4); break;
 990                 case 2: slots = (1<<0) | (2<<4); break;
 991                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
 992                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
 993                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
 994                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
 995                 default: slots = 0; break;
 996                 }
 997         }
 998         /* STOP index is never reached */
 999         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1000         udelay(20);
1001         snd_via82xx_codec_ready(chip, 0);
1002         return 0;
1003 }
1004
1005 /*
1006  * prepare callback for capture on via823x
1007  */
1008 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1009 {
1010         via82xx_t *chip = snd_pcm_substream_chip(substream);
1011         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1012         snd_pcm_runtime_t *runtime = substream->runtime;
1013
1014         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1015                 return -EINVAL;
1016         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1017         snd_via82xx_channel_reset(chip, viadev);
1018         snd_via82xx_set_table_ptr(chip, viadev);
1019         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1020         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1021              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1022              0xff000000,    /* STOP index is never reached */
1023              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1024         udelay(20);
1025         snd_via82xx_codec_ready(chip, 0);
1026         return 0;
1027 }
1028
1029
1030 /*
1031  * pcm hardware definition, identical for both playback and capture
1032  */
1033 static snd_pcm_hardware_t snd_via82xx_hw =
1034 {
1035         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1036                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1037                                  SNDRV_PCM_INFO_MMAP_VALID |
1038                                  SNDRV_PCM_INFO_RESUME |
1039                                  SNDRV_PCM_INFO_PAUSE),
1040         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1041         .rates =                SNDRV_PCM_RATE_48000,
1042         .rate_min =             48000,
1043         .rate_max =             48000,
1044         .channels_min =         1,
1045         .channels_max =         2,
1046         .buffer_bytes_max =     128 * 1024,
1047         .period_bytes_min =     32,
1048         .period_bytes_max =     128 * 1024,
1049         .periods_min =          2,
1050         .periods_max =          VIA_TABLE_SIZE / 2,
1051         .fifo_size =            0,
1052 };
1053
1054
1055 /*
1056  * open callback skeleton
1057  */
1058 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1059 {
1060         snd_pcm_runtime_t *runtime = substream->runtime;
1061         int err;
1062         struct via_rate_lock *ratep;
1063
1064         runtime->hw = snd_via82xx_hw;
1065
1066         /* set the hw rate condition */
1067         ratep = &chip->rates[viadev->direction];
1068         spin_lock_irq(&ratep->lock);
1069         ratep->used++;
1070         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1071                 /* DXS#3 and spdif is on */
1072                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1073                 snd_pcm_limit_hw_rates(runtime);
1074         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1075                 /* fixed DXS playback rate */
1076                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1077                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1078         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1079                 /* use full SRC capabilities of DXS */
1080                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1081                                      SNDRV_PCM_RATE_8000_48000);
1082                 runtime->hw.rate_min = 8000;
1083                 runtime->hw.rate_max = 48000;
1084         } else if (! ratep->rate) {
1085                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1086                 runtime->hw.rates = chip->ac97->rates[idx];
1087                 snd_pcm_limit_hw_rates(runtime);
1088         } else {
1089                 /* a fixed rate */
1090                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1091                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1092         }
1093         spin_unlock_irq(&ratep->lock);
1094
1095         /* we may remove following constaint when we modify table entries
1096            in interrupt */
1097         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1098                 return err;
1099
1100         runtime->private_data = viadev;
1101         viadev->substream = substream;
1102
1103         return 0;
1104 }
1105
1106
1107 /*
1108  * open callback for playback on via686 and via823x DSX
1109  */
1110 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1111 {
1112         via82xx_t *chip = snd_pcm_substream_chip(substream);
1113         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1114         int err;
1115
1116         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1117                 return err;
1118         return 0;
1119 }
1120
1121 /*
1122  * open callback for playback on via823x multi-channel
1123  */
1124 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1125 {
1126         via82xx_t *chip = snd_pcm_substream_chip(substream);
1127         viadev_t *viadev = &chip->devs[chip->multi_devno];
1128         int err;
1129         /* channels constraint for VIA8233A
1130          * 3 and 5 channels are not supported
1131          */
1132         static unsigned int channels[] = {
1133                 1, 2, 4, 6
1134         };
1135         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1136                 .count = ARRAY_SIZE(channels),
1137                 .list = channels,
1138                 .mask = 0,
1139         };
1140
1141         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1142                 return err;
1143         substream->runtime->hw.channels_max = 6;
1144         if (chip->revision == VIA_REV_8233A)
1145                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1146         return 0;
1147 }
1148
1149 /*
1150  * open callback for capture on via686 and via823x
1151  */
1152 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1153 {
1154         via82xx_t *chip = snd_pcm_substream_chip(substream);
1155         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1156
1157         return snd_via82xx_pcm_open(chip, viadev, substream);
1158 }
1159
1160 /*
1161  * close callback
1162  */
1163 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1164 {
1165         via82xx_t *chip = snd_pcm_substream_chip(substream);
1166         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1167         struct via_rate_lock *ratep;
1168
1169         /* release the rate lock */
1170         ratep = &chip->rates[viadev->direction];
1171         spin_lock_irq(&ratep->lock);
1172         ratep->used--;
1173         if (! ratep->used)
1174                 ratep->rate = 0;
1175         spin_unlock_irq(&ratep->lock);
1176
1177         viadev->substream = NULL;
1178         return 0;
1179 }
1180
1181
1182 /* via686 playback callbacks */
1183 static snd_pcm_ops_t snd_via686_playback_ops = {
1184         .open =         snd_via82xx_playback_open,
1185         .close =        snd_via82xx_pcm_close,
1186         .ioctl =        snd_pcm_lib_ioctl,
1187         .hw_params =    snd_via82xx_hw_params,
1188         .hw_free =      snd_via82xx_hw_free,
1189         .prepare =      snd_via686_playback_prepare,
1190         .trigger =      snd_via82xx_pcm_trigger,
1191         .pointer =      snd_via686_pcm_pointer,
1192         .page =         snd_pcm_sgbuf_ops_page,
1193 };
1194
1195 /* via686 capture callbacks */
1196 static snd_pcm_ops_t snd_via686_capture_ops = {
1197         .open =         snd_via82xx_capture_open,
1198         .close =        snd_via82xx_pcm_close,
1199         .ioctl =        snd_pcm_lib_ioctl,
1200         .hw_params =    snd_via82xx_hw_params,
1201         .hw_free =      snd_via82xx_hw_free,
1202         .prepare =      snd_via686_capture_prepare,
1203         .trigger =      snd_via82xx_pcm_trigger,
1204         .pointer =      snd_via686_pcm_pointer,
1205         .page =         snd_pcm_sgbuf_ops_page,
1206 };
1207
1208 /* via823x DSX playback callbacks */
1209 static snd_pcm_ops_t snd_via8233_playback_ops = {
1210         .open =         snd_via82xx_playback_open,
1211         .close =        snd_via82xx_pcm_close,
1212         .ioctl =        snd_pcm_lib_ioctl,
1213         .hw_params =    snd_via82xx_hw_params,
1214         .hw_free =      snd_via82xx_hw_free,
1215         .prepare =      snd_via8233_playback_prepare,
1216         .trigger =      snd_via82xx_pcm_trigger,
1217         .pointer =      snd_via8233_pcm_pointer,
1218         .page =         snd_pcm_sgbuf_ops_page,
1219 };
1220
1221 /* via823x multi-channel playback callbacks */
1222 static snd_pcm_ops_t snd_via8233_multi_ops = {
1223         .open =         snd_via8233_multi_open,
1224         .close =        snd_via82xx_pcm_close,
1225         .ioctl =        snd_pcm_lib_ioctl,
1226         .hw_params =    snd_via82xx_hw_params,
1227         .hw_free =      snd_via82xx_hw_free,
1228         .prepare =      snd_via8233_multi_prepare,
1229         .trigger =      snd_via82xx_pcm_trigger,
1230         .pointer =      snd_via8233_pcm_pointer,
1231         .page =         snd_pcm_sgbuf_ops_page,
1232 };
1233
1234 /* via823x capture callbacks */
1235 static snd_pcm_ops_t snd_via8233_capture_ops = {
1236         .open =         snd_via82xx_capture_open,
1237         .close =        snd_via82xx_pcm_close,
1238         .ioctl =        snd_pcm_lib_ioctl,
1239         .hw_params =    snd_via82xx_hw_params,
1240         .hw_free =      snd_via82xx_hw_free,
1241         .prepare =      snd_via8233_capture_prepare,
1242         .trigger =      snd_via82xx_pcm_trigger,
1243         .pointer =      snd_via8233_pcm_pointer,
1244         .page =         snd_pcm_sgbuf_ops_page,
1245 };
1246
1247
1248 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
1249 {
1250         chip->devs[idx].reg_offset = reg_offset;
1251         chip->devs[idx].direction = direction;
1252         chip->devs[idx].port = chip->port + reg_offset;
1253 }
1254
1255 /*
1256  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1257  */
1258 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1259 {
1260         snd_pcm_t *pcm;
1261         int i, err;
1262
1263         chip->playback_devno = 0;       /* x 4 */
1264         chip->multi_devno = 4;          /* x 1 */
1265         chip->capture_devno = 5;        /* x 2 */
1266         chip->num_devs = 7;
1267         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1268
1269         /* PCM #0:  4 DSX playbacks and 1 capture */
1270         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1271         if (err < 0)
1272                 return err;
1273         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1274         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1275         pcm->private_data = chip;
1276         strcpy(pcm->name, chip->card->shortname);
1277         chip->pcms[0] = pcm;
1278         /* set up playbacks */
1279         for (i = 0; i < 4; i++)
1280                 init_viadev(chip, i, 0x10 * i, 0);
1281         /* capture */
1282         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1283
1284         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1285                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1286                 return err;
1287
1288         /* PCM #1:  multi-channel playback and 2nd capture */
1289         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1290         if (err < 0)
1291                 return err;
1292         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1293         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1294         pcm->private_data = chip;
1295         strcpy(pcm->name, chip->card->shortname);
1296         chip->pcms[1] = pcm;
1297         /* set up playback */
1298         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1299         /* set up capture */
1300         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 1);
1301
1302         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1303                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1304                 return err;
1305
1306         return 0;
1307 }
1308
1309 /*
1310  * create pcm instances for VIA8233A
1311  */
1312 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1313 {
1314         snd_pcm_t *pcm;
1315         int err;
1316
1317         chip->multi_devno = 0;
1318         chip->playback_devno = 1;
1319         chip->capture_devno = 2;
1320         chip->num_devs = 3;
1321         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1322
1323         /* PCM #0:  multi-channel playback and capture */
1324         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1325         if (err < 0)
1326                 return err;
1327         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1328         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1329         pcm->private_data = chip;
1330         strcpy(pcm->name, chip->card->shortname);
1331         chip->pcms[0] = pcm;
1332         /* set up playback */
1333         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1334         /* capture */
1335         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1336
1337         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1338                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1339                 return err;
1340
1341         /* SPDIF supported? */
1342         if (! ac97_can_spdif(chip->ac97))
1343                 return 0;
1344
1345         /* PCM #1:  DXS3 playback (for spdif) */
1346         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1347         if (err < 0)
1348                 return err;
1349         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1350         pcm->private_data = chip;
1351         strcpy(pcm->name, chip->card->shortname);
1352         chip->pcms[1] = pcm;
1353         /* set up playback */
1354         init_viadev(chip, chip->playback_devno, 0x30, 0);
1355
1356         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1357                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1358                 return err;
1359
1360         return 0;
1361 }
1362
1363 /*
1364  * create a pcm instance for via686a/b
1365  */
1366 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1367 {
1368         snd_pcm_t *pcm;
1369         int err;
1370
1371         chip->playback_devno = 0;
1372         chip->capture_devno = 1;
1373         chip->num_devs = 2;
1374         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1375
1376         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1377         if (err < 0)
1378                 return err;
1379         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1380         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1381         pcm->private_data = chip;
1382         strcpy(pcm->name, chip->card->shortname);
1383         chip->pcms[0] = pcm;
1384         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0);
1385         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 1);
1386
1387         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1388                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1389                 return err;
1390
1391         return 0;
1392 }
1393
1394
1395 /*
1396  *  Mixer part
1397  */
1398
1399 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1400 {
1401         /* formerly they were "Line" and "Mic", but it looks like that they
1402          * have nothing to do with the actual physical connections...
1403          */
1404         static char *texts[2] = {
1405                 "Input1", "Input2"
1406         };
1407         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1408         uinfo->count = 1;
1409         uinfo->value.enumerated.items = 2;
1410         if (uinfo->value.enumerated.item >= 2)
1411                 uinfo->value.enumerated.item = 1;
1412         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1413         return 0;
1414 }
1415
1416 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1417 {
1418         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1419         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1420         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1421         return 0;
1422 }
1423
1424 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1425 {
1426         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1427         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1428         u8 val, oval;
1429
1430         spin_lock_irq(&chip->reg_lock);
1431         oval = inb(port);
1432         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1433         if (ucontrol->value.enumerated.item[0])
1434                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1435         if (val != oval)
1436                 outb(val, port);
1437         spin_unlock_irq(&chip->reg_lock);
1438         return val != oval;
1439 }
1440
1441 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1442         .name = "Input Source Select",
1443         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1444         .info = snd_via8233_capture_source_info,
1445         .get = snd_via8233_capture_source_get,
1446         .put = snd_via8233_capture_source_put,
1447 };
1448
1449 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1450 {
1451         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1452         uinfo->count = 1;
1453         uinfo->value.integer.min = 0;
1454         uinfo->value.integer.max = 1;
1455         return 0;
1456 }
1457
1458 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1459 {
1460         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1461         u8 val;
1462
1463         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1464         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1465         return 0;
1466 }
1467
1468 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1469 {
1470         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1471         u8 val, oval;
1472
1473         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1474         val = oval & ~VIA8233_SPDIF_DX3;
1475         if (ucontrol->value.integer.value[0])
1476                 val |= VIA8233_SPDIF_DX3;
1477         /* save the spdif flag for rate filtering */
1478         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1479         if (val != oval) {
1480                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1481                 return 1;
1482         }
1483         return 0;
1484 }
1485
1486 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1487         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1488         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1489         .info = snd_via8233_dxs3_spdif_info,
1490         .get = snd_via8233_dxs3_spdif_get,
1491         .put = snd_via8233_dxs3_spdif_put,
1492 };
1493
1494 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1495 {
1496         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1497         uinfo->count = 2;
1498         uinfo->value.integer.min = 0;
1499         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1500         return 0;
1501 }
1502
1503 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1504 {
1505         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1506         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[0];
1507         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[1];
1508         return 0;
1509 }
1510
1511 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1512 {
1513         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1514         unsigned int idx;
1515         unsigned char val;
1516         int i, change = 0;
1517
1518         for (i = 0; i < 2; i++) {
1519                 val = ucontrol->value.integer.value[i];
1520                 if (val > VIA_DXS_MAX_VOLUME)
1521                         val = VIA_DXS_MAX_VOLUME;
1522                 val = VIA_DXS_MAX_VOLUME - val;
1523                 if (val != chip->playback_volume[i]) {
1524                         change = 1;
1525                         chip->playback_volume[i] = val;
1526                         for (idx = 0; idx < 4; idx++) {
1527                                 unsigned long port = chip->port + 0x10 * idx;
1528                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1529                         }
1530                 }
1531         }
1532         return change;
1533 }
1534
1535 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1536         .name = "PCM Playback Volume",
1537         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1538         .info = snd_via8233_dxs_volume_info,
1539         .get = snd_via8233_dxs_volume_get,
1540         .put = snd_via8233_dxs_volume_put,
1541 };
1542
1543 /*
1544  */
1545
1546 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1547 {
1548         via82xx_t *chip = bus->private_data;
1549         chip->ac97_bus = NULL;
1550 }
1551
1552 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1553 {
1554         via82xx_t *chip = ac97->private_data;
1555         chip->ac97 = NULL;
1556 }
1557
1558 static struct ac97_quirk ac97_quirks[] = {
1559         {
1560                 .subvendor = 0x1106,
1561                 .subdevice = 0x4161,
1562                 .codec_id = 0x56494161, /* VT1612A */
1563                 .name = "Soltek SL-75DRV5",
1564                 .type = AC97_TUNE_NONE
1565         },
1566         {       /* FIXME: which codec? */
1567                 .subvendor = 0x1106,
1568                 .subdevice = 0x4161,
1569                 .name = "ASRock K7VT2",
1570                 .type = AC97_TUNE_HP_ONLY
1571         },
1572         {
1573                 .subvendor = 0x1019,
1574                 .subdevice = 0x0a81,
1575                 .name = "ECS K7VTA3",
1576                 .type = AC97_TUNE_HP_ONLY
1577         },
1578         {
1579                 .subvendor = 0x1019,
1580                 .subdevice = 0x0a85,
1581                 .name = "ECS L7VMM2",
1582                 .type = AC97_TUNE_HP_ONLY
1583         },
1584         {
1585                 .subvendor = 0x1849,
1586                 .subdevice = 0x3059,
1587                 .name = "ASRock K7VM2",
1588                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1589         },
1590         {
1591                 .subvendor = 0x14cd,
1592                 .subdevice = 0x7002,
1593                 .name = "Unknown",
1594                 .type = AC97_TUNE_ALC_JACK
1595         },
1596         {
1597                 .subvendor = 0x1071,
1598                 .subdevice = 0x8590,
1599                 .name = "Mitac Mobo",
1600                 .type = AC97_TUNE_ALC_JACK
1601         },
1602         {
1603                 .subvendor = 0x161f,
1604                 .subdevice = 0x202b,
1605                 .name = "Arima Notebook",
1606                 .type = AC97_TUNE_HP_ONLY,
1607         },
1608         { } /* terminator */
1609 };
1610
1611 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_override)
1612 {
1613         ac97_template_t ac97;
1614         int err;
1615         static ac97_bus_ops_t ops = {
1616                 .write = snd_via82xx_codec_write,
1617                 .read = snd_via82xx_codec_read,
1618                 .wait = snd_via82xx_codec_wait,
1619         };
1620
1621         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1622                 return err;
1623         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1624         chip->ac97_bus->clock = chip->ac97_clock;
1625         chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
1626
1627         memset(&ac97, 0, sizeof(ac97));
1628         ac97.private_data = chip;
1629         ac97.private_free = snd_via82xx_mixer_free_ac97;
1630         ac97.pci = chip->pci;
1631         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1632                 return err;
1633
1634         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1635
1636         if (chip->chip_type != TYPE_VIA686) {
1637                 /* use slot 10/11 */
1638                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1639         }
1640
1641         return 0;
1642 }
1643
1644 #ifdef SUPPORT_JOYSTICK
1645 #define JOYSTICK_ADDR   0x200
1646 static int __devinit snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1647 {
1648         struct gameport *gp;
1649         struct resource *r;
1650
1651         if (!joystick[dev])
1652                 return -ENODEV;
1653
1654         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1655         if (!r) {
1656                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n", JOYSTICK_ADDR);
1657                 return -EBUSY;
1658         }
1659
1660         chip->gameport = gp = gameport_allocate_port();
1661         if (!gp) {
1662                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1663                 release_resource(r);
1664                 kfree_nocheck(r);
1665                 return -ENOMEM;
1666         }
1667
1668         gameport_set_name(gp, "VIA686 Gameport");
1669         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1670         gameport_set_dev_parent(gp, &chip->pci->dev);
1671         gp->io = JOYSTICK_ADDR;
1672         gameport_set_port_data(gp, r);
1673
1674         /* Enable legacy joystick port */
1675         *legacy |= VIA_FUNC_ENABLE_GAME;
1676         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1677
1678         gameport_register_port(chip->gameport);
1679
1680         return 0;
1681 }
1682
1683 static void snd_via686_free_gameport(via82xx_t *chip)
1684 {
1685         if (chip->gameport) {
1686                 struct resource *r = gameport_get_port_data(chip->gameport);
1687
1688                 gameport_unregister_port(chip->gameport);
1689                 chip->gameport = NULL;
1690                 release_resource(r);
1691                 kfree_nocheck(r);
1692         }
1693 }
1694 #else
1695 static inline int snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1696 {
1697         return -ENOSYS;
1698 }
1699 static inline void snd_via686_free_gameport(via82xx_t *chip) { }
1700 #endif
1701
1702
1703 /*
1704  *
1705  */
1706
1707 static int __devinit snd_via8233_init_misc(via82xx_t *chip, int dev)
1708 {
1709         int i, err, caps;
1710         unsigned char val;
1711
1712         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1713         for (i = 0; i < caps; i++) {
1714                 snd_via8233_capture_source.index = i;
1715                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1716                 if (err < 0)
1717                         return err;
1718         }
1719         if (ac97_can_spdif(chip->ac97)) {
1720                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1721                 if (err < 0)
1722                         return err;
1723         }
1724         if (chip->chip_type != TYPE_VIA8233A) {
1725                 /* when no h/w PCM volume control is found, use DXS volume control
1726                  * as the PCM vol control
1727                  */
1728                 snd_ctl_elem_id_t sid;
1729                 memset(&sid, 0, sizeof(sid));
1730                 strcpy(sid.name, "PCM Playback Volume");
1731                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1732                 if (! snd_ctl_find_id(chip->card, &sid)) {
1733                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1734                         if (err < 0)
1735                                 return err;
1736                 }
1737         }
1738
1739         /* select spdif data slot 10/11 */
1740         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1741         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1742         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1743         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1744
1745         return 0;
1746 }
1747
1748 static int __devinit snd_via686_init_misc(via82xx_t *chip, int dev)
1749 {
1750         unsigned char legacy, legacy_cfg;
1751         int rev_h = 0;
1752
1753         legacy = chip->old_legacy;
1754         legacy_cfg = chip->old_legacy_cfg;
1755         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1756         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1757         if (chip->revision >= VIA_REV_686_H) {
1758                 rev_h = 1;
1759                 if (mpu_port[dev] >= 0x200) {   /* force MIDI */
1760                         mpu_port[dev] &= 0xfffc;
1761                         pci_write_config_dword(chip->pci, 0x18, mpu_port[dev] | 0x01);
1762 #ifdef CONFIG_PM
1763                         chip->mpu_port_saved = mpu_port[dev];
1764 #endif
1765                 } else {
1766                         mpu_port[dev] = pci_resource_start(chip->pci, 2);
1767                 }
1768         } else {
1769                 switch (mpu_port[dev]) {        /* force MIDI */
1770                 case 0x300:
1771                 case 0x310:
1772                 case 0x320:
1773                 case 0x330:
1774                         legacy_cfg &= ~(3 << 2);
1775                         legacy_cfg |= (mpu_port[dev] & 0x0030) >> 2;
1776                         break;
1777                 default:                        /* no, use BIOS settings */
1778                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1779                                 mpu_port[dev] = 0x300 + ((legacy_cfg & 0x000c) << 2);
1780                         break;
1781                 }
1782         }
1783         if (mpu_port[dev] >= 0x200 &&
1784             (chip->mpu_res = request_region(mpu_port[dev], 2, "VIA82xx MPU401")) != NULL) {
1785                 if (rev_h)
1786                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1787                 legacy |= VIA_FUNC_ENABLE_MIDI;
1788         } else {
1789                 if (rev_h)
1790                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1791                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1792                 mpu_port[dev] = 0;
1793         }
1794
1795         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1796         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1797         if (chip->mpu_res) {
1798                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1799                                         mpu_port[dev], 1,
1800                                         chip->irq, 0, &chip->rmidi) < 0) {
1801                         printk(KERN_WARNING "unable to initialize MPU-401 at 0x%lx, skipping\n", mpu_port[dev]);
1802                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1803                 } else {
1804                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1805                 }
1806                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1807         }
1808
1809         snd_via686_create_gameport(chip, dev, &legacy);
1810
1811 #ifdef CONFIG_PM
1812         chip->legacy_saved = legacy;
1813         chip->legacy_cfg_saved = legacy_cfg;
1814 #endif
1815
1816         return 0;
1817 }
1818
1819
1820 /*
1821  * proc interface
1822  */
1823 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1824 {
1825         via82xx_t *chip = entry->private_data;
1826         int i;
1827
1828         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1829         for (i = 0; i < 0xa0; i += 4) {
1830                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1831         }
1832 }
1833
1834 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1835 {
1836         snd_info_entry_t *entry;
1837
1838         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1839                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1840 }
1841
1842 /*
1843  *
1844  */
1845
1846 static int snd_via82xx_chip_init(via82xx_t *chip)
1847 {
1848         unsigned int val;
1849         unsigned long end_time;
1850         unsigned char pval;
1851
1852 #if 0 /* broken on K7M? */
1853         if (chip->chip_type == TYPE_VIA686)
1854                 /* disable all legacy ports */
1855                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1856 #endif
1857         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1858         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1859                 /* deassert ACLink reset, force SYNC */
1860                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1861                                       VIA_ACLINK_CTRL_ENABLE |
1862                                       VIA_ACLINK_CTRL_RESET |
1863                                       VIA_ACLINK_CTRL_SYNC);
1864                 udelay(100);
1865 #if 1 /* FIXME: should we do full reset here for all chip models? */
1866                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
1867                 udelay(100);
1868 #else
1869                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
1870                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1871                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
1872                 udelay(2);
1873 #endif
1874                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1875                 /* note - FM data out has trouble with non VRA codecs !! */
1876                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1877                 udelay(100);
1878         }
1879
1880         /* Make sure VRA is enabled, in case we didn't do a
1881          * complete codec reset, above */
1882         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
1883         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
1884                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1885                 /* note - FM data out has trouble with non VRA codecs !! */
1886                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1887                 udelay(100);
1888         }
1889
1890         /* wait until codec ready */
1891         end_time = jiffies + msecs_to_jiffies(750);
1892         do {
1893                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1894                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
1895                         break;
1896                 set_current_state(TASK_UNINTERRUPTIBLE);
1897                 schedule_timeout(1);
1898         } while (time_before(jiffies, end_time));
1899
1900         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1901                 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
1902
1903 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
1904         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1905                                  VIA_REG_AC97_SECONDARY_VALID |
1906                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1907         end_time = jiffies + msecs_to_jiffies(750);
1908         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1909                                  VIA_REG_AC97_SECONDARY_VALID |
1910                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1911         do {
1912                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1913                         chip->ac97_secondary = 1;
1914                         goto __ac97_ok2;
1915                 }
1916                 set_current_state(TASK_INTERRUPTIBLE);
1917                 schedule_timeout(1);
1918         } while (time_before(jiffies, end_time));
1919         /* This is ok, the most of motherboards have only one codec */
1920
1921       __ac97_ok2:
1922 #endif
1923
1924         if (chip->chip_type == TYPE_VIA686) {
1925                 /* route FM trap to IRQ, disable FM trap */
1926                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1927                 /* disable all GPI interrupts */
1928                 outl(0, VIAREG(chip, GPI_INTR));
1929         }
1930
1931         if (chip->chip_type != TYPE_VIA686) {
1932                 /* Workaround for Award BIOS bug:
1933                  * DXS channels don't work properly with VRA if MC97 is disabled.
1934                  */
1935                 struct pci_dev *pci;
1936                 pci = pci_find_device(0x1106, 0x3068, NULL); /* MC97 */
1937                 if (pci) {
1938                         unsigned char data;
1939                         pci_read_config_byte(pci, 0x44, &data);
1940                         pci_write_config_byte(pci, 0x44, data | 0x40);
1941                 }
1942         }
1943
1944         if (chip->chip_type != TYPE_VIA8233A) {
1945                 int i, idx;
1946                 for (idx = 0; idx < 4; idx++) {
1947                         unsigned long port = chip->port + 0x10 * idx;
1948                         for (i = 0; i < 2; i++)
1949                                 outb(chip->playback_volume[i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1950                 }
1951         }
1952
1953         return 0;
1954 }
1955
1956 #ifdef CONFIG_PM
1957 /*
1958  * power management
1959  */
1960 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
1961 {
1962         via82xx_t *chip = card->pm_private_data;
1963         int i;
1964
1965         for (i = 0; i < 2; i++)
1966                 if (chip->pcms[i])
1967                         snd_pcm_suspend_all(chip->pcms[i]);
1968         for (i = 0; i < chip->num_devs; i++)
1969                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1970         synchronize_irq(chip->irq);
1971         snd_ac97_suspend(chip->ac97);
1972
1973         /* save misc values */
1974         if (chip->chip_type != TYPE_VIA686) {
1975                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
1976                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
1977                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1978         }
1979
1980         pci_set_power_state(chip->pci, 3);
1981         pci_disable_device(chip->pci);
1982         return 0;
1983 }
1984
1985 static int snd_via82xx_resume(snd_card_t *card)
1986 {
1987         via82xx_t *chip = card->pm_private_data;
1988         int i;
1989
1990         pci_enable_device(chip->pci);
1991         pci_set_power_state(chip->pci, 0);
1992
1993         snd_via82xx_chip_init(chip);
1994
1995         if (chip->chip_type == TYPE_VIA686) {
1996                 if (chip->mpu_port_saved)
1997                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
1998                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
1999                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2000         } else {
2001                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2002                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2003                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2004         }
2005
2006         snd_ac97_resume(chip->ac97);
2007
2008         for (i = 0; i < chip->num_devs; i++)
2009                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2010
2011         return 0;
2012 }
2013 #endif /* CONFIG_PM */
2014
2015 static int snd_via82xx_free(via82xx_t *chip)
2016 {
2017         unsigned int i;
2018
2019         if (chip->irq < 0)
2020                 goto __end_hw;
2021         /* disable interrupts */
2022         for (i = 0; i < chip->num_devs; i++)
2023                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2024         synchronize_irq(chip->irq);
2025       __end_hw:
2026         if (chip->irq >= 0)
2027                 free_irq(chip->irq, (void *)chip);
2028         if (chip->mpu_res) {
2029                 release_resource(chip->mpu_res);
2030                 kfree_nocheck(chip->mpu_res);
2031         }
2032         pci_release_regions(chip->pci);
2033
2034         if (chip->chip_type == TYPE_VIA686) {
2035                 snd_via686_free_gameport(chip);
2036                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2037                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2038         }
2039         pci_disable_device(chip->pci);
2040         kfree(chip);
2041         return 0;
2042 }
2043
2044 static int snd_via82xx_dev_free(snd_device_t *device)
2045 {
2046         via82xx_t *chip = device->device_data;
2047         return snd_via82xx_free(chip);
2048 }
2049
2050 static int __devinit snd_via82xx_create(snd_card_t * card,
2051                                         struct pci_dev *pci,
2052                                         int chip_type,
2053                                         int revision,
2054                                         unsigned int ac97_clock,
2055                                         via82xx_t ** r_via)
2056 {
2057         via82xx_t *chip;
2058         int err;
2059         static snd_device_ops_t ops = {
2060                 .dev_free =     snd_via82xx_dev_free,
2061         };
2062
2063         if ((err = pci_enable_device(pci)) < 0)
2064                 return err;
2065
2066         if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
2067                 pci_disable_device(pci);
2068                 return -ENOMEM;
2069         }
2070
2071         chip->chip_type = chip_type;
2072         chip->revision = revision;
2073
2074         spin_lock_init(&chip->reg_lock);
2075         spin_lock_init(&chip->rates[0].lock);
2076         spin_lock_init(&chip->rates[1].lock);
2077         chip->card = card;
2078         chip->pci = pci;
2079         chip->irq = -1;
2080
2081         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2082         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2083         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2084                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2085
2086         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2087                 kfree(chip);
2088                 pci_disable_device(pci);
2089                 return err;
2090         }
2091         chip->port = pci_resource_start(pci, 0);
2092         if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
2093                         card->driver, (void *)chip)) {
2094                 snd_printk("unable to grab IRQ %d\n", pci->irq);
2095                 snd_via82xx_free(chip);
2096                 return -EBUSY;
2097         }
2098         chip->irq = pci->irq;
2099         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2100                 chip->ac97_clock = ac97_clock;
2101         synchronize_irq(chip->irq);
2102
2103         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2104                 snd_via82xx_free(chip);
2105                 return err;
2106         }
2107
2108         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2109                 snd_via82xx_free(chip);
2110                 return err;
2111         }
2112
2113         /* The 8233 ac97 controller does not implement the master bit
2114          * in the pci command register. IMHO this is a violation of the PCI spec.
2115          * We call pci_set_master here because it does not hurt. */
2116         pci_set_master(pci);
2117
2118         snd_card_set_dev(card, &pci->dev);
2119
2120         *r_via = chip;
2121         return 0;
2122 }
2123
2124 struct via823x_info {
2125         int revision;
2126         char *name;
2127         int type;
2128 };
2129 static struct via823x_info via823x_cards[] __devinitdata = {
2130         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2131         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2132         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2133         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2134         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2135         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2136 };
2137
2138 /*
2139  * auto detection of DXS channel supports.
2140  */
2141 struct dxs_whitelist {
2142         unsigned short subvendor;
2143         unsigned short subdevice;
2144         unsigned short mask;
2145         short action;   /* new dxs_support value */
2146 };
2147
2148 static int __devinit check_dxs_list(struct pci_dev *pci)
2149 {
2150         static struct dxs_whitelist whitelist[] = {
2151                 { .subvendor = 0x1005, .subdevice = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2152                 { .subvendor = 0x1019, .subdevice = 0x0996, .action = VIA_DXS_48K },
2153                 { .subvendor = 0x1019, .subdevice = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2154                 { .subvendor = 0x1019, .subdevice = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2155                 { .subvendor = 0x1025, .subdevice = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2156                 { .subvendor = 0x1025, .subdevice = 0x0046, .action = VIA_DXS_SRC }, /* Acer Aspire 1524 WMLi */
2157                 { .subvendor = 0x1043, .subdevice = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2158                 { .subvendor = 0x1043, .subdevice = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2159                 { .subvendor = 0x1043, .subdevice = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2160                 { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC    }, /* ASUS A8V Deluxe */
2161                 { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2162                 { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */
2163                 { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2164                 { .subvendor = 0x1106, .subdevice = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2165                 { .subvendor = 0x1106, .subdevice = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2166                 { .subvendor = 0x1106, .subdevice = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2167                 { .subvendor = 0x1106, .subdevice = 0xc001, .action = VIA_DXS_SRC }, /* Insight P4-ITX */
2168                 { .subvendor = 0x1297, .subdevice = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2169                 { .subvendor = 0x1297, .subdevice = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2170                 { .subvendor = 0x1458, .subdevice = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2171                 { .subvendor = 0x1462, .subdevice = 0x0080, .action = VIA_DXS_SRC }, /* MSI K8T Neo-FIS2R */
2172                 { .subvendor = 0x1462, .subdevice = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2173                 { .subvendor = 0x1462, .subdevice = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2174                 { .subvendor = 0x1462, .subdevice = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2175                 { .subvendor = 0x1462, .subdevice = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2176                 { .subvendor = 0x147b, .subdevice = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2177                 { .subvendor = 0x147b, .subdevice = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2178                 { .subvendor = 0x147b, .subdevice = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2179                 { .subvendor = 0x147b, .subdevice = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2180                 { .subvendor = 0x14ff, .subdevice = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2181                 { .subvendor = 0x14ff, .subdevice = 0x0408, .action = VIA_DXS_SRC }, /* Twinhead laptop */
2182                 { .subvendor = 0x1584, .subdevice = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2183                 { .subvendor = 0x1584, .subdevice = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2184                 { .subvendor = 0x161f, .subdevice = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2185                 { .subvendor = 0x161f, .subdevice = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2186                 { .subvendor = 0x1631, .subdevice = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2187                 { .subvendor = 0x1695, .subdevice = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2188                 { .subvendor = 0x1849, .subdevice = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2189                 { .subvendor = 0x1919, .subdevice = 0x200a, .action = VIA_DXS_NO_VRA }, /* Soltek SL-K8Tpro-939 */
2190                 { .subvendor = 0x4005, .subdevice = 0x4710, .action = VIA_DXS_SRC },    /* MSI K7T266 Pro2 (MS-6380 V2.0) BIOS 3.7 */
2191                 { } /* terminator */
2192         };
2193         struct dxs_whitelist *w;
2194         unsigned short subsystem_vendor;
2195         unsigned short subsystem_device;
2196
2197         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2198         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2199
2200         for (w = whitelist; w->subvendor; w++) {
2201                 if (w->subvendor != subsystem_vendor)
2202                         continue;
2203                 if (w->mask) {
2204                         if ((w->mask & subsystem_device) == w->subdevice)
2205                                 return w->action;
2206                 } else {
2207                         if (subsystem_device == w->subdevice)
2208                                 return w->action;
2209                 }
2210         }
2211
2212         /*
2213          * not detected, try 48k rate only to be sure.
2214          */
2215         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2216         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2217         printk(KERN_INFO "         and report if it works on your machine.\n");
2218         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2219         return VIA_DXS_48K;
2220 };
2221
2222 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2223                                        const struct pci_device_id *pci_id)
2224 {
2225         static int dev;
2226         snd_card_t *card;
2227         via82xx_t *chip;
2228         unsigned char revision;
2229         int chip_type = 0, card_type;
2230         unsigned int i;
2231         int err;
2232
2233         if (dev >= SNDRV_CARDS)
2234                 return -ENODEV;
2235         if (!enable[dev]) {
2236                 dev++;
2237                 return -ENOENT;
2238         }
2239
2240         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
2241         if (card == NULL)
2242                 return -ENOMEM;
2243
2244         card_type = pci_id->driver_data;
2245         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2246         switch (card_type) {
2247         case TYPE_CARD_VIA686:
2248                 strcpy(card->driver, "VIA686A");
2249                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2250                 chip_type = TYPE_VIA686;
2251                 break;
2252         case TYPE_CARD_VIA8233:
2253                 chip_type = TYPE_VIA8233;
2254                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2255                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2256                         if (revision == via823x_cards[i].revision) {
2257                                 chip_type = via823x_cards[i].type;
2258                                 strcpy(card->shortname, via823x_cards[i].name);
2259                                 break;
2260                         }
2261                 }
2262                 if (chip_type != TYPE_VIA8233A) {
2263                         if (dxs_support[dev] == VIA_DXS_AUTO)
2264                                 dxs_support[dev] = check_dxs_list(pci);
2265                         /* force to use VIA8233 or 8233A model according to
2266                          * dxs_support module option
2267                          */
2268                         if (dxs_support[dev] == VIA_DXS_DISABLE)
2269                                 chip_type = TYPE_VIA8233A;
2270                         else
2271                                 chip_type = TYPE_VIA8233;
2272                 }
2273                 if (chip_type == TYPE_VIA8233A)
2274                         strcpy(card->driver, "VIA8233A");
2275                 else if (revision >= VIA_REV_8237)
2276                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2277                 else
2278                         strcpy(card->driver, "VIA8233");
2279                 break;
2280         default:
2281                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2282                 err = -EINVAL;
2283                 goto __error;
2284         }
2285
2286         if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
2287                 goto __error;
2288         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk[dev])) < 0)
2289                 goto __error;
2290
2291         if (chip_type == TYPE_VIA686) {
2292                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2293                     (err = snd_via686_init_misc(chip, dev)) < 0)
2294                         goto __error;
2295         } else {
2296                 if (chip_type == TYPE_VIA8233A) {
2297                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2298                                 goto __error;
2299                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2300                 } else {
2301                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2302                                 goto __error;
2303                         if (dxs_support[dev] == VIA_DXS_48K)
2304                                 chip->dxs_fixed = 1;
2305                         else if (dxs_support[dev] == VIA_DXS_NO_VRA)
2306                                 chip->no_vra = 1;
2307                         else if (dxs_support[dev] == VIA_DXS_SRC) {
2308                                 chip->no_vra = 1;
2309                                 chip->dxs_src = 1;
2310                         }
2311                 }
2312                 if ((err = snd_via8233_init_misc(chip, dev)) < 0)
2313                         goto __error;
2314         }
2315
2316         snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
2317
2318         /* disable interrupts */
2319         for (i = 0; i < chip->num_devs; i++)
2320                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2321
2322         snprintf(card->longname, sizeof(card->longname),
2323                  "%s with %s at %#lx, irq %d", card->shortname,
2324                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2325
2326         snd_via82xx_proc_init(chip);
2327
2328         if ((err = snd_card_register(card)) < 0) {
2329                 snd_card_free(card);
2330                 return err;
2331         }
2332         pci_set_drvdata(pci, card);
2333         dev++;
2334         return 0;
2335
2336  __error:
2337         snd_card_free(card);
2338         return err;
2339 }
2340
2341 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2342 {
2343         snd_card_free(pci_get_drvdata(pci));
2344         pci_set_drvdata(pci, NULL);
2345 }
2346
2347 static struct pci_driver driver = {
2348         .name = "VIA 82xx Audio",
2349         .id_table = snd_via82xx_ids,
2350         .probe = snd_via82xx_probe,
2351         .remove = __devexit_p(snd_via82xx_remove),
2352         SND_PCI_PM_CALLBACKS
2353 };
2354
2355 static int __init alsa_card_via82xx_init(void)
2356 {
2357         return pci_register_driver(&driver);
2358 }
2359
2360 static void __exit alsa_card_via82xx_exit(void)
2361 {
2362         pci_unregister_driver(&driver);
2363 }
2364
2365 module_init(alsa_card_via82xx_init)
2366 module_exit(alsa_card_via82xx_exit)