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 int ac97_quirk[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = AC97_TUNE_DEFAULT};
  85 static int dxs_support[SNDRV_CARDS];
  86 static int boot_devs;
  87
  88 module_param_array(index, int, boot_devs, 0444);
  89 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  90 module_param_array(id, charp, boot_devs, 0444);
  91 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  92 module_param_array(enable, bool, boot_devs, 0444);
  93 MODULE_PARM_DESC(enable, "Enable audio part of VIA 82xx bridge.");
  94 module_param_array(mpu_port, long, boot_devs, 0444);
  95 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  96 #ifdef SUPPORT_JOYSTICK
  97 module_param_array(joystick, bool, boot_devs, 0444);
  98 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  99 #endif
 100 module_param_array(ac97_clock, int, boot_devs, 0444);
 101 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 102 module_param_array(ac97_quirk, int, boot_devs, 0444);
 103 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 104 module_param_array(dxs_support, int, boot_devs, 0444);
 105 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA)");
 106
 107
 108 /* pci ids */
 109 #ifndef PCI_DEVICE_ID_VIA_82C686_5
 110 #define PCI_DEVICE_ID_VIA_82C686_5      0x3058
 111 #endif
 112 #ifndef PCI_DEVICE_ID_VIA_8233_5
 113 #define PCI_DEVICE_ID_VIA_8233_5        0x3059
 114 #endif
 115
 116 /* revision numbers for via686 */
 117 #define VIA_REV_686_A           0x10
 118 #define VIA_REV_686_B           0x11
 119 #define VIA_REV_686_C           0x12
 120 #define VIA_REV_686_D           0x13
 121 #define VIA_REV_686_E           0x14
 122 #define VIA_REV_686_H           0x20
 123
 124 /* revision numbers for via8233 */
 125 #define VIA_REV_PRE_8233        0x10    /* not in market */
 126 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 127 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 128 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 129 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 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
 306
 307 /*
 308  */
 309
 310 typedef struct _snd_via82xx via82xx_t;
 311 typedef struct via_dev viadev_t;
 312
 313 /*
 314  * pcm stream
 315  */
 316
 317 struct snd_via_sg_table {
 318         unsigned int offset;
 319         unsigned int size;
 320 } ;
 321
 322 #define VIA_TABLE_SIZE  255
 323
 324 struct via_dev {
 325         unsigned int reg_offset;
 326         unsigned long port;
 327         int direction;  /* playback = 0, capture = 1 */
 328         snd_pcm_substream_t *substream;
 329         int running;
 330         unsigned int tbl_entries; /* # descriptors */
 331         struct snd_dma_buffer table;
 332         struct snd_via_sg_table *idx_table;
 333         /* for recovery from the unexpected pointer */
 334         unsigned int lastpos;
 335         unsigned int bufsize;
 336         unsigned int bufsize2;
 337 };
 338
 339
 340 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 341 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 342
 343 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 344
 345 struct via_rate_lock {
 346         spinlock_t lock;
 347         int rate;
 348         int used;
 349 };
 350
 351 struct _snd_via82xx {
 352         int irq;
 353
 354         unsigned long port;
 355         struct resource *mpu_res;
 356         int chip_type;
 357         unsigned char revision;
 358
 359         unsigned char old_legacy;
 360         unsigned char old_legacy_cfg;
 361 #ifdef CONFIG_PM
 362         unsigned char legacy_saved;
 363         unsigned char legacy_cfg_saved;
 364         unsigned char spdif_ctrl_saved;
 365         unsigned char capture_src_saved[2];
 366         unsigned int mpu_port_saved;
 367 #endif
 368
 369         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 370
 371         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 372
 373         struct pci_dev *pci;
 374         snd_card_t *card;
 375
 376         unsigned int num_devs;
 377         unsigned int playback_devno, multi_devno, capture_devno;
 378         viadev_t devs[VIA_MAX_DEVS];
 379         struct via_rate_lock rates[2]; /* playback and capture */
 380         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 381         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 382         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 383
 384         snd_pcm_t *pcms[2];
 385         snd_rawmidi_t *rmidi;
 386
 387         ac97_bus_t *ac97_bus;
 388         ac97_t *ac97;
 389         unsigned int ac97_clock;
 390         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 391
 392         spinlock_t reg_lock;
 393         spinlock_t ac97_lock;
 394         snd_info_entry_t *proc_entry;
 395
 396 #ifdef SUPPORT_JOYSTICK
 397         struct gameport gameport;
 398         struct resource *res_joystick;
 399 #endif
 400 };
 401
 402 static struct pci_device_id snd_via82xx_ids[] = {
 403         { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },    /* 686A */
 404         { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },   /* VT8233 */
 405         { 0, }
 406 };
 407
 408 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 409
 410 /*
 411  */
 412
 413 /*
 414  * allocate and initialize the descriptor buffers
 415  * periods = number of periods
 416  * fragsize = period size in bytes
 417  */
 418 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 419                            struct pci_dev *pci,
 420                            unsigned int periods, unsigned int fragsize)
 421 {
 422         unsigned int i, idx, ofs, rest;
 423         via82xx_t *chip = snd_pcm_substream_chip(substream);
 424         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 425
 426         if (dev->table.area == NULL) {
 427                 /* the start of each lists must be aligned to 8 bytes,
 428                  * but the kernel pages are much bigger, so we don't care
 429                  */
 430                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 431                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 432                                         &dev->table) < 0)
 433                         return -ENOMEM;
 434         }
 435         if (! dev->idx_table) {
 436                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 437                 if (! dev->idx_table)
 438                         return -ENOMEM;
 439         }
 440
 441         /* fill the entries */
 442         idx = 0;
 443         ofs = 0;
 444         for (i = 0; i < periods; i++) {
 445                 rest = fragsize;
 446                 /* fill descriptors for a period.
 447                  * a period can be split to several descriptors if it's
 448                  * over page boundary.
 449                  */
 450                 do {
 451                         unsigned int r;
 452                         unsigned int flag;
 453
 454                         if (idx >= VIA_TABLE_SIZE) {
 455                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 456                                 return -EINVAL;
 457                         }
 458                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 459                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 460                         if (rest < r)
 461                                 r = rest;
 462                         rest -= r;
 463                         if (! rest) {
 464                                 if (i == periods - 1)
 465                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 466                                 else
 467                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 468                         } else
 469                                 flag = 0; /* period continues to the next */
 470                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 471                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 472                         dev->idx_table[idx].offset = ofs;
 473                         dev->idx_table[idx].size = r;
 474                         ofs += r;
 475                         idx++;
 476                 } while (rest > 0);
 477         }
 478         dev->tbl_entries = idx;
 479         dev->bufsize = periods * fragsize;
 480         dev->bufsize2 = dev->bufsize / 2;
 481         return 0;
 482 }
 483
 484
 485 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 486                            struct pci_dev *pci)
 487 {
 488         if (dev->table.area) {
 489                 snd_dma_free_pages(&dev->table);
 490                 dev->table.area = NULL;
 491         }
 492         if (dev->idx_table) {
 493                 kfree(dev->idx_table);
 494                 dev->idx_table = NULL;
 495         }
 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         set_current_state(TASK_UNINTERRUPTIBLE);
 551         schedule_timeout(HZ/2);
 552 }
 553
 554 static void snd_via82xx_codec_write(ac97_t *ac97,
 555                                     unsigned short reg,
 556                                     unsigned short val)
 557 {
 558         via82xx_t *chip = ac97->private_data;
 559         unsigned int xval;
 560
 561         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 562         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 563         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 564         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 565         spin_lock(&chip->ac97_lock);
 566         snd_via82xx_codec_xwrite(chip, xval);
 567         snd_via82xx_codec_ready(chip, ac97->num);
 568         spin_unlock(&chip->ac97_lock);
 569 }
 570
 571 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 572 {
 573         via82xx_t *chip = ac97->private_data;
 574         unsigned int xval, val = 0xffff;
 575         int again = 0;
 576
 577         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 578         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 579         xval |= VIA_REG_AC97_READ;
 580         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 581         spin_lock(&chip->ac97_lock);
 582         while (1) {
 583                 if (again++ > 3) {
 584                         spin_unlock(&chip->ac97_lock);
 585                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 586                         return 0xffff;
 587                 }
 588                 snd_via82xx_codec_xwrite(chip, xval);
 589                 udelay (20);
 590                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 591                         udelay(25);
 592                         val = snd_via82xx_codec_xread(chip);
 593                         break;
 594                 }
 595         }
 596         spin_unlock(&chip->ac97_lock);
 597         return val & 0xffff;
 598 }
 599
 600 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 601 {
 602         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 603              VIADEV_REG(viadev, OFFSET_CONTROL));
 604         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 605         udelay(50);
 606         /* disable interrupts */
 607         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 608         /* clear interrupts */
 609         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 610         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 611         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 612         viadev->lastpos = 0;
 613 }
 614
 615
 616 /*
 617  *  Interrupt handler
 618  */
 619
 620 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 621 {
 622         via82xx_t *chip = dev_id;
 623         unsigned int status;
 624         unsigned int i;
 625
 626 #if 0
 627         /* FIXME: does it work on via823x? */
 628         if (chip->chip_type != TYPE_VIA686)
 629                 goto _skip_sgd;
 630 #endif
 631         status = inl(VIAREG(chip, SGD_SHADOW));
 632         if (! (status & chip->intr_mask)) {
 633                 if (chip->rmidi)
 634                         /* check mpu401 interrupt */
 635                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 636                 return IRQ_NONE;
 637         }
 638 // _skip_sgd:
 639
 640         /* check status for each stream */
 641         spin_lock(&chip->reg_lock);
 642         for (i = 0; i < chip->num_devs; i++) {
 643                 viadev_t *viadev = &chip->devs[i];
 644                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 645                 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
 646                 if (! c_status)
 647                         continue;
 648                 if (viadev->substream && viadev->running) {
 649                         spin_unlock(&chip->reg_lock);
 650                         snd_pcm_period_elapsed(viadev->substream);
 651                         spin_lock(&chip->reg_lock);
 652                 }
 653                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 654         }
 655         spin_unlock(&chip->reg_lock);
 656         return IRQ_HANDLED;
 657 }
 658
 659 /*
 660  *  PCM callbacks
 661  */
 662
 663 /*
 664  * trigger callback
 665  */
 666 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 667 {
 668         via82xx_t *chip = snd_pcm_substream_chip(substream);
 669         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 670         unsigned char val;
 671
 672         if (chip->chip_type != TYPE_VIA686)
 673                 val = VIA_REG_CTRL_INT;
 674         else
 675                 val = 0;
 676         switch (cmd) {
 677         case SNDRV_PCM_TRIGGER_START:
 678                 val |= VIA_REG_CTRL_START;
 679                 viadev->running = 1;
 680                 break;
 681         case SNDRV_PCM_TRIGGER_STOP:
 682                 val = VIA_REG_CTRL_TERMINATE;
 683                 viadev->running = 0;
 684                 break;
 685         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 686                 val |= VIA_REG_CTRL_PAUSE;
 687                 viadev->running = 0;
 688                 break;
 689         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 690                 viadev->running = 1;
 691                 break;
 692         default:
 693                 return -EINVAL;
 694         }
 695         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 696         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 697                 snd_via82xx_channel_reset(chip, viadev);
 698         return 0;
 699 }
 700
 701
 702 /*
 703  * pointer callbacks
 704  */
 705
 706 /*
 707  * calculate the linear position at the given sg-buffer index and the rest count
 708  */
 709
 710 #define check_invalid_pos(viadev,pos) \
 711         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 712
 713 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 714 {
 715         unsigned int size, res;
 716
 717         size = viadev->idx_table[idx].size;
 718         res = viadev->idx_table[idx].offset + size - count;
 719
 720         /* check the validity of the calculated position */
 721         if (size < count) {
 722                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 723                 res = viadev->lastpos;
 724         } else if (check_invalid_pos(viadev, res)) {
 725 #ifdef POINTER_DEBUG
 726                 printk("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);
 727 #endif
 728                 if (count && size < count) {
 729                         snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n");
 730                         res = viadev->lastpos;
 731                 } else {
 732                         if (! count)
 733                                 /* bogus count 0 on the DMA boundary? */
 734                                 res = viadev->idx_table[idx].offset;
 735                         else
 736                                 /* count register returns full size when end of buffer is reached */
 737                                 res = viadev->idx_table[idx].offset + size;
 738                         if (check_invalid_pos(viadev, res)) {
 739                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 740                                 res = viadev->lastpos;
 741                         }
 742                 }
 743         }
 744         viadev->lastpos = res; /* remember the last position */
 745         if (res >= viadev->bufsize)
 746                 res -= viadev->bufsize;
 747         return res;
 748 }
 749
 750 /*
 751  * get the current pointer on via686
 752  */
 753 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 754 {
 755         via82xx_t *chip = snd_pcm_substream_chip(substream);
 756         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 757         unsigned int idx, ptr, count, res;
 758
 759         snd_assert(viadev->tbl_entries, return 0);
 760         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 761                 return 0;
 762
 763         spin_lock(&chip->reg_lock);
 764         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 765         /* The via686a does not have the current index register,
 766          * so we need to calculate the index from CURR_PTR.
 767          */
 768         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 769         if (ptr <= (unsigned int)viadev->table.addr)
 770                 idx = 0;
 771         else /* CURR_PTR holds the address + 8 */
 772                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 773         res = calc_linear_pos(viadev, idx, count);
 774         spin_unlock(&chip->reg_lock);
 775
 776         return bytes_to_frames(substream->runtime, res);
 777 }
 778
 779 /*
 780  * get the current pointer on via823x
 781  */
 782 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 783 {
 784         via82xx_t *chip = snd_pcm_substream_chip(substream);
 785         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 786         unsigned int idx, count, res;
 787
 788         snd_assert(viadev->tbl_entries, return 0);
 789         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 790                 return 0;
 791         spin_lock(&chip->reg_lock);
 792         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 793         idx = count >> 24;
 794         if (idx >= viadev->tbl_entries) {
 795 #ifdef POINTER_DEBUG
 796                 printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 797 #endif
 798                 res = viadev->lastpos;
 799         } else {
 800                 count &= 0xffffff;
 801                 res = calc_linear_pos(viadev, idx, count);
 802         }
 803         spin_unlock(&chip->reg_lock);
 804
 805         return bytes_to_frames(substream->runtime, res);
 806 }
 807
 808
 809 /*
 810  * hw_params callback:
 811  * allocate the buffer and build up the buffer description table
 812  */
 813 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 814                                  snd_pcm_hw_params_t * hw_params)
 815 {
 816         via82xx_t *chip = snd_pcm_substream_chip(substream);
 817         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 818         int err;
 819
 820         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 821         if (err < 0)
 822                 return err;
 823         err = build_via_table(viadev, substream, chip->pci,
 824                               params_periods(hw_params),
 825                               params_period_bytes(hw_params));
 826         if (err < 0)
 827                 return err;
 828
 829         return 0;
 830 }
 831
 832 /*
 833  * hw_free callback:
 834  * clean up the buffer description table and release the buffer
 835  */
 836 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 837 {
 838         via82xx_t *chip = snd_pcm_substream_chip(substream);
 839         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 840
 841         clean_via_table(viadev, substream, chip->pci);
 842         snd_pcm_lib_free_pages(substream);
 843         return 0;
 844 }
 845
 846
 847 /*
 848  * set up the table pointer
 849  */
 850 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 851 {
 852         snd_via82xx_codec_ready(chip, 0);
 853         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 854         udelay(20);
 855         snd_via82xx_codec_ready(chip, 0);
 856 }
 857
 858 /*
 859  * prepare callback for playback and capture on via686
 860  */
 861 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 862 {
 863         snd_via82xx_channel_reset(chip, viadev);
 864         /* this must be set after channel_reset */
 865         snd_via82xx_set_table_ptr(chip, viadev);
 866         outb(VIA_REG_TYPE_AUTOSTART |
 867              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 868              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 869              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 870              VIA_REG_TYPE_INT_EOL |
 871              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 872 }
 873
 874 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 875 {
 876         via82xx_t *chip = snd_pcm_substream_chip(substream);
 877         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 878         snd_pcm_runtime_t *runtime = substream->runtime;
 879
 880         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 881         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 882         via686_setup_format(chip, viadev, runtime);
 883         return 0;
 884 }
 885
 886 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 887 {
 888         via82xx_t *chip = snd_pcm_substream_chip(substream);
 889         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 890         snd_pcm_runtime_t *runtime = substream->runtime;
 891
 892         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 893         via686_setup_format(chip, viadev, runtime);
 894         return 0;
 895 }
 896
 897 /*
 898  * lock the current rate
 899  */
 900 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 901 {
 902         int changed = 0;
 903
 904         spin_lock_irq(&rec->lock);
 905         if (rec->rate != rate) {
 906                 if (rec->rate && rec->used > 1) /* already set */
 907                         changed = -EINVAL;
 908                 else {
 909                         rec->rate = rate;
 910                         changed = 1;
 911                 }
 912         }
 913         spin_unlock_irq(&rec->lock);
 914         return changed;
 915 }
 916
 917 /*
 918  * prepare callback for DSX playback on via823x
 919  */
 920 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
 921 {
 922         via82xx_t *chip = snd_pcm_substream_chip(substream);
 923         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 924         snd_pcm_runtime_t *runtime = substream->runtime;
 925         int rate_changed;
 926         u32 rbits;
 927
 928         if ((rate_changed = via_lock_rate(&chip->rates[0], runtime->rate)) < 0)
 929                 return rate_changed;
 930         if (rate_changed) {
 931                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
 932                                   chip->no_vra ? 48000 : runtime->rate);
 933                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 934         }
 935         if (runtime->rate == 48000)
 936                 rbits = 0xfffff;
 937         else
 938                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
 939         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
 940         snd_via82xx_channel_reset(chip, viadev);
 941         snd_via82xx_set_table_ptr(chip, viadev);
 942         outb(chip->playback_volume[viadev->reg_offset / 0x10][0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
 943         outb(chip->playback_volume[viadev->reg_offset / 0x10][1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
 944         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 945              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
 946              rbits | /* rate */
 947              0xff000000,    /* STOP index is never reached */
 948              VIADEV_REG(viadev, OFFSET_STOP_IDX));
 949         udelay(20);
 950         snd_via82xx_codec_ready(chip, 0);
 951         return 0;
 952 }
 953
 954 /*
 955  * prepare callback for multi-channel playback on via823x
 956  */
 957 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
 958 {
 959         via82xx_t *chip = snd_pcm_substream_chip(substream);
 960         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 961         snd_pcm_runtime_t *runtime = substream->runtime;
 962         unsigned int slots;
 963         int fmt;
 964
 965         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
 966                 return -EINVAL;
 967         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 968         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
 969         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
 970         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 971         snd_via82xx_channel_reset(chip, viadev);
 972         snd_via82xx_set_table_ptr(chip, viadev);
 973
 974         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
 975         fmt |= runtime->channels << 4;
 976         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
 977 #if 0
 978         if (chip->revision == VIA_REV_8233A)
 979                 slots = 0;
 980         else
 981 #endif
 982         {
 983                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
 984                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
 985                 switch (runtime->channels) {
 986                 case 1: slots = (1<<0) | (1<<4); break;
 987                 case 2: slots = (1<<0) | (2<<4); break;
 988                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
 989                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
 990                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
 991                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
 992                 default: slots = 0; break;
 993                 }
 994         }
 995         /* STOP index is never reached */
 996         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
 997         udelay(20);
 998         snd_via82xx_codec_ready(chip, 0);
 999         return 0;
1000 }
1001
1002 /*
1003  * prepare callback for capture on via823x
1004  */
1005 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1006 {
1007         via82xx_t *chip = snd_pcm_substream_chip(substream);
1008         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1009         snd_pcm_runtime_t *runtime = substream->runtime;
1010
1011         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1012                 return -EINVAL;
1013         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1014         snd_via82xx_channel_reset(chip, viadev);
1015         snd_via82xx_set_table_ptr(chip, viadev);
1016         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1017         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1018              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1019              0xff000000,    /* STOP index is never reached */
1020              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1021         udelay(20);
1022         snd_via82xx_codec_ready(chip, 0);
1023         return 0;
1024 }
1025
1026
1027 /*
1028  * pcm hardware definition, identical for both playback and capture
1029  */
1030 static snd_pcm_hardware_t snd_via82xx_hw =
1031 {
1032         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1033                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1034                                  SNDRV_PCM_INFO_MMAP_VALID |
1035                                  SNDRV_PCM_INFO_RESUME |
1036                                  SNDRV_PCM_INFO_PAUSE),
1037         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1038         .rates =                SNDRV_PCM_RATE_48000,
1039         .rate_min =             48000,
1040         .rate_max =             48000,
1041         .channels_min =         1,
1042         .channels_max =         2,
1043         .buffer_bytes_max =     128 * 1024,
1044         .period_bytes_min =     32,
1045         .period_bytes_max =     128 * 1024,
1046         .periods_min =          2,
1047         .periods_max =          VIA_TABLE_SIZE / 2,
1048         .fifo_size =            0,
1049 };
1050
1051
1052 /*
1053  * open callback skeleton
1054  */
1055 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1056 {
1057         snd_pcm_runtime_t *runtime = substream->runtime;
1058         int err;
1059         struct via_rate_lock *ratep;
1060
1061         runtime->hw = snd_via82xx_hw;
1062
1063         /* set the hw rate condition */
1064         ratep = &chip->rates[viadev->direction];
1065         spin_lock_irq(&ratep->lock);
1066         ratep->used++;
1067         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1068                 /* DXS#3 and spdif is on */
1069                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1070                 snd_pcm_limit_hw_rates(runtime);
1071         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1072                 /* fixed DXS playback rate */
1073                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1074                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1075         } else if (! ratep->rate) {
1076                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1077                 runtime->hw.rates = chip->ac97->rates[idx];
1078                 snd_pcm_limit_hw_rates(runtime);
1079         } else {
1080                 /* a fixed rate */
1081                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1082                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1083         }
1084         spin_unlock_irq(&ratep->lock);
1085
1086         /* we may remove following constaint when we modify table entries
1087            in interrupt */
1088         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1089                 return err;
1090
1091         runtime->private_data = viadev;
1092         viadev->substream = substream;
1093
1094         return 0;
1095 }
1096
1097
1098 /*
1099  * open callback for playback on via686 and via823x DSX
1100  */
1101 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1102 {
1103         via82xx_t *chip = snd_pcm_substream_chip(substream);
1104         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1105         int err;
1106
1107         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1108                 return err;
1109         return 0;
1110 }
1111
1112 /*
1113  * open callback for playback on via823x multi-channel
1114  */
1115 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1116 {
1117         via82xx_t *chip = snd_pcm_substream_chip(substream);
1118         viadev_t *viadev = &chip->devs[chip->multi_devno];
1119         int err;
1120         /* channels constraint for VIA8233A
1121          * 3 and 5 channels are not supported
1122          */
1123         static unsigned int channels[] = {
1124                 1, 2, 4, 6
1125         };
1126         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1127                 .count = ARRAY_SIZE(channels),
1128                 .list = channels,
1129                 .mask = 0,
1130         };
1131
1132         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1133                 return err;
1134         substream->runtime->hw.channels_max = 6;
1135         if (chip->revision == VIA_REV_8233A)
1136                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1137         return 0;
1138 }
1139
1140 /*
1141  * open callback for capture on via686 and via823x
1142  */
1143 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1144 {
1145         via82xx_t *chip = snd_pcm_substream_chip(substream);
1146         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1147
1148         return snd_via82xx_pcm_open(chip, viadev, substream);
1149 }
1150
1151 /*
1152  * close callback
1153  */
1154 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1155 {
1156         via82xx_t *chip = snd_pcm_substream_chip(substream);
1157         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1158         struct via_rate_lock *ratep;
1159
1160         /* release the rate lock */
1161         ratep = &chip->rates[viadev->direction];
1162         spin_lock_irq(&ratep->lock);
1163         ratep->used--;
1164         if (! ratep->used)
1165                 ratep->rate = 0;
1166         spin_unlock_irq(&ratep->lock);
1167
1168         viadev->substream = NULL;
1169         return 0;
1170 }
1171
1172
1173 /* via686 playback callbacks */
1174 static snd_pcm_ops_t snd_via686_playback_ops = {
1175         .open =         snd_via82xx_playback_open,
1176         .close =        snd_via82xx_pcm_close,
1177         .ioctl =        snd_pcm_lib_ioctl,
1178         .hw_params =    snd_via82xx_hw_params,
1179         .hw_free =      snd_via82xx_hw_free,
1180         .prepare =      snd_via686_playback_prepare,
1181         .trigger =      snd_via82xx_pcm_trigger,
1182         .pointer =      snd_via686_pcm_pointer,
1183         .page =         snd_pcm_sgbuf_ops_page,
1184 };
1185
1186 /* via686 capture callbacks */
1187 static snd_pcm_ops_t snd_via686_capture_ops = {
1188         .open =         snd_via82xx_capture_open,
1189         .close =        snd_via82xx_pcm_close,
1190         .ioctl =        snd_pcm_lib_ioctl,
1191         .hw_params =    snd_via82xx_hw_params,
1192         .hw_free =      snd_via82xx_hw_free,
1193         .prepare =      snd_via686_capture_prepare,
1194         .trigger =      snd_via82xx_pcm_trigger,
1195         .pointer =      snd_via686_pcm_pointer,
1196         .page =         snd_pcm_sgbuf_ops_page,
1197 };
1198
1199 /* via823x DSX playback callbacks */
1200 static snd_pcm_ops_t snd_via8233_playback_ops = {
1201         .open =         snd_via82xx_playback_open,
1202         .close =        snd_via82xx_pcm_close,
1203         .ioctl =        snd_pcm_lib_ioctl,
1204         .hw_params =    snd_via82xx_hw_params,
1205         .hw_free =      snd_via82xx_hw_free,
1206         .prepare =      snd_via8233_playback_prepare,
1207         .trigger =      snd_via82xx_pcm_trigger,
1208         .pointer =      snd_via8233_pcm_pointer,
1209         .page =         snd_pcm_sgbuf_ops_page,
1210 };
1211
1212 /* via823x multi-channel playback callbacks */
1213 static snd_pcm_ops_t snd_via8233_multi_ops = {
1214         .open =         snd_via8233_multi_open,
1215         .close =        snd_via82xx_pcm_close,
1216         .ioctl =        snd_pcm_lib_ioctl,
1217         .hw_params =    snd_via82xx_hw_params,
1218         .hw_free =      snd_via82xx_hw_free,
1219         .prepare =      snd_via8233_multi_prepare,
1220         .trigger =      snd_via82xx_pcm_trigger,
1221         .pointer =      snd_via8233_pcm_pointer,
1222         .page =         snd_pcm_sgbuf_ops_page,
1223 };
1224
1225 /* via823x capture callbacks */
1226 static snd_pcm_ops_t snd_via8233_capture_ops = {
1227         .open =         snd_via82xx_capture_open,
1228         .close =        snd_via82xx_pcm_close,
1229         .ioctl =        snd_pcm_lib_ioctl,
1230         .hw_params =    snd_via82xx_hw_params,
1231         .hw_free =      snd_via82xx_hw_free,
1232         .prepare =      snd_via8233_capture_prepare,
1233         .trigger =      snd_via82xx_pcm_trigger,
1234         .pointer =      snd_via8233_pcm_pointer,
1235         .page =         snd_pcm_sgbuf_ops_page,
1236 };
1237
1238
1239 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
1240 {
1241         chip->devs[idx].reg_offset = reg_offset;
1242         chip->devs[idx].direction = direction;
1243         chip->devs[idx].port = chip->port + reg_offset;
1244 }
1245
1246 /*
1247  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1248  */
1249 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1250 {
1251         snd_pcm_t *pcm;
1252         int i, err;
1253
1254         chip->playback_devno = 0;       /* x 4 */
1255         chip->multi_devno = 4;          /* x 1 */
1256         chip->capture_devno = 5;        /* x 2 */
1257         chip->num_devs = 7;
1258         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1259
1260         /* PCM #0:  4 DSX playbacks and 1 capture */
1261         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1262         if (err < 0)
1263                 return err;
1264         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1265         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1266         pcm->private_data = chip;
1267         strcpy(pcm->name, chip->card->shortname);
1268         chip->pcms[0] = pcm;
1269         /* set up playbacks */
1270         for (i = 0; i < 4; i++)
1271                 init_viadev(chip, i, 0x10 * i, 0);
1272         /* capture */
1273         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1274
1275         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1276                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1277                 return err;
1278
1279         /* PCM #1:  multi-channel playback and 2nd capture */
1280         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1281         if (err < 0)
1282                 return err;
1283         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1284         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1285         pcm->private_data = chip;
1286         strcpy(pcm->name, chip->card->shortname);
1287         chip->pcms[1] = pcm;
1288         /* set up playback */
1289         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1290         /* set up capture */
1291         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 1);
1292
1293         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1294                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1295                 return err;
1296
1297         return 0;
1298 }
1299
1300 /*
1301  * create pcm instances for VIA8233A
1302  */
1303 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1304 {
1305         snd_pcm_t *pcm;
1306         int err;
1307
1308         chip->multi_devno = 0;
1309         chip->playback_devno = 1;
1310         chip->capture_devno = 2;
1311         chip->num_devs = 3;
1312         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1313
1314         /* PCM #0:  multi-channel playback and capture */
1315         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1316         if (err < 0)
1317                 return err;
1318         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1319         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1320         pcm->private_data = chip;
1321         strcpy(pcm->name, chip->card->shortname);
1322         chip->pcms[0] = pcm;
1323         /* set up playback */
1324         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1325         /* capture */
1326         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1327
1328         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1329                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1330                 return err;
1331
1332         /* SPDIF supported? */
1333         if (! ac97_can_spdif(chip->ac97))
1334                 return 0;
1335
1336         /* PCM #1:  DXS3 playback (for spdif) */
1337         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1338         if (err < 0)
1339                 return err;
1340         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1341         pcm->private_data = chip;
1342         strcpy(pcm->name, chip->card->shortname);
1343         chip->pcms[1] = pcm;
1344         /* set up playback */
1345         init_viadev(chip, chip->playback_devno, 0x30, 0);
1346
1347         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1348                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1349                 return err;
1350
1351         return 0;
1352 }
1353
1354 /*
1355  * create a pcm instance for via686a/b
1356  */
1357 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1358 {
1359         snd_pcm_t *pcm;
1360         int err;
1361
1362         chip->playback_devno = 0;
1363         chip->capture_devno = 1;
1364         chip->num_devs = 2;
1365         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1366
1367         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1368         if (err < 0)
1369                 return err;
1370         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1371         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1372         pcm->private_data = chip;
1373         strcpy(pcm->name, chip->card->shortname);
1374         chip->pcms[0] = pcm;
1375         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0);
1376         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 1);
1377
1378         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1379                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1380                 return err;
1381
1382         return 0;
1383 }
1384
1385
1386 /*
1387  *  Mixer part
1388  */
1389
1390 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1391 {
1392         /* formerly they were "Line" and "Mic", but it looks like that they
1393          * have nothing to do with the actual physical connections...
1394          */
1395         static char *texts[2] = {
1396                 "Input1", "Input2"
1397         };
1398         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1399         uinfo->count = 1;
1400         uinfo->value.enumerated.items = 2;
1401         if (uinfo->value.enumerated.item >= 2)
1402                 uinfo->value.enumerated.item = 1;
1403         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1404         return 0;
1405 }
1406
1407 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1408 {
1409         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1410         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1411         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1412         return 0;
1413 }
1414
1415 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1416 {
1417         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1418         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1419         u8 val, oval;
1420
1421         spin_lock_irq(&chip->reg_lock);
1422         oval = inb(port);
1423         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1424         if (ucontrol->value.enumerated.item[0])
1425                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1426         if (val != oval)
1427                 outb(val, port);
1428         spin_unlock_irq(&chip->reg_lock);
1429         return val != oval;
1430 }
1431
1432 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1433         .name = "Input Source Select",
1434         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1435         .info = snd_via8233_capture_source_info,
1436         .get = snd_via8233_capture_source_get,
1437         .put = snd_via8233_capture_source_put,
1438 };
1439
1440 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1441 {
1442         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1443         uinfo->count = 1;
1444         uinfo->value.integer.min = 0;
1445         uinfo->value.integer.max = 1;
1446         return 0;
1447 }
1448
1449 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1450 {
1451         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1452         u8 val;
1453
1454         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1455         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1456         return 0;
1457 }
1458
1459 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1460 {
1461         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1462         u8 val, oval;
1463
1464         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1465         val = oval & ~VIA8233_SPDIF_DX3;
1466         if (ucontrol->value.integer.value[0])
1467                 val |= VIA8233_SPDIF_DX3;
1468         /* save the spdif flag for rate filtering */
1469         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1470         if (val != oval) {
1471                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1472                 return 1;
1473         }
1474         return 0;
1475 }
1476
1477 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1478         .name = "IEC958 Output Switch",
1479         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1480         .info = snd_via8233_dxs3_spdif_info,
1481         .get = snd_via8233_dxs3_spdif_get,
1482         .put = snd_via8233_dxs3_spdif_put,
1483 };
1484
1485 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1486 {
1487         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1488         uinfo->count = 2;
1489         uinfo->value.integer.min = 0;
1490         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1491         return 0;
1492 }
1493
1494 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1495 {
1496         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1497         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1498         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1499         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1500         return 0;
1501 }
1502
1503 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1504 {
1505         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1506         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1507         unsigned long port = chip->port + 0x10 * idx;
1508         unsigned char val;
1509         int i, change = 0;
1510
1511         for (i = 0; i < 2; i++) {
1512                 val = ucontrol->value.integer.value[i];
1513                 if (val > VIA_DXS_MAX_VOLUME)
1514                         val = VIA_DXS_MAX_VOLUME;
1515                 val = VIA_DXS_MAX_VOLUME - val;
1516                 change |= val != chip->playback_volume[idx][i];
1517                 if (change) {
1518                         chip->playback_volume[idx][i] = val;
1519                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1520                 }
1521         }
1522         return change;
1523 }
1524
1525 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1526         .name = "VIA DXS Playback Volume",
1527         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1528         .count = 4,
1529         .info = snd_via8233_dxs_volume_info,
1530         .get = snd_via8233_dxs_volume_get,
1531         .put = snd_via8233_dxs_volume_put,
1532 };
1533
1534 /*
1535  */
1536
1537 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1538 {
1539         via82xx_t *chip = bus->private_data;
1540         chip->ac97_bus = NULL;
1541 }
1542
1543 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1544 {
1545         via82xx_t *chip = ac97->private_data;
1546         chip->ac97 = NULL;
1547 }
1548
1549 static struct ac97_quirk ac97_quirks[] = {
1550         {       /* FIXME: which codec? */
1551                 .vendor = 0x1106,
1552                 .device = 0x4161,
1553                 .name = "ASRock K7VT2",
1554                 .type = AC97_TUNE_HP_ONLY
1555         },
1556         {
1557                 .vendor = 0x1019,
1558                 .device = 0x0a81,
1559                 .name = "ECS K7VTA3",
1560                 .type = AC97_TUNE_HP_ONLY
1561         },
1562         {
1563                 .vendor = 0x1019,
1564                 .device = 0x0a85,
1565                 .name = "ECS L7VMM2",
1566                 .type = AC97_TUNE_HP_ONLY
1567         },
1568         {
1569                 .vendor = 0x1849,
1570                 .device = 0x3059,
1571                 .name = "ASRock K7VM2",
1572                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1573         },
1574         {
1575                 .vendor = 0x14cd,
1576                 .device = 0x7002,
1577                 .name = "Unknown",
1578                 .type = AC97_TUNE_ALC_JACK
1579         },
1580         {
1581                 .vendor = 0x1071,
1582                 .device = 0x8590,
1583                 .name = "Mitac Mobo",
1584                 .type = AC97_TUNE_ALC_JACK
1585         },
1586         {
1587                 .vendor = 0x161f,
1588                 .device = 0x202b,
1589                 .name = "Arima Notebook",
1590                 .type = AC97_TUNE_HP_ONLY,
1591         },
1592         { } /* terminator */
1593 };
1594
1595 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, int ac97_quirk)
1596 {
1597         ac97_template_t ac97;
1598         int err;
1599         static ac97_bus_ops_t ops = {
1600                 .write = snd_via82xx_codec_write,
1601                 .read = snd_via82xx_codec_read,
1602                 .wait = snd_via82xx_codec_wait,
1603         };
1604
1605         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1606                 return err;
1607         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1608         chip->ac97_bus->clock = chip->ac97_clock;
1609
1610         memset(&ac97, 0, sizeof(ac97));
1611         ac97.private_data = chip;
1612         ac97.private_free = snd_via82xx_mixer_free_ac97;
1613         ac97.pci = chip->pci;
1614         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1615                 return err;
1616
1617         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, ac97_quirk);
1618
1619         if (chip->chip_type != TYPE_VIA686) {
1620                 /* use slot 10/11 */
1621                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1622         }
1623
1624         return 0;
1625 }
1626
1627 /*
1628  *
1629  */
1630
1631 static int snd_via8233_init_misc(via82xx_t *chip, int dev)
1632 {
1633         int i, err, caps;
1634         unsigned char val;
1635
1636         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
1637                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
1638         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1639         for (i = 0; i < caps; i++) {
1640                 snd_via8233_capture_source.index = i;
1641                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1642                 if (err < 0)
1643                         return err;
1644         }
1645         if (ac97_can_spdif(chip->ac97)) {
1646                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1647                 if (err < 0)
1648                         return err;
1649         }
1650         if (chip->chip_type != TYPE_VIA8233A) {
1651                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1652                 if (err < 0)
1653                         return err;
1654         }
1655
1656         /* select spdif data slot 10/11 */
1657         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1658         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1659         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1660         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1661
1662         return 0;
1663 }
1664
1665 static int snd_via686_init_misc(via82xx_t *chip, int dev)
1666 {
1667         unsigned char legacy, legacy_cfg;
1668         int rev_h = 0;
1669
1670         legacy = chip->old_legacy;
1671         legacy_cfg = chip->old_legacy_cfg;
1672         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1673         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1674         legacy &= ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM);     /* diable SB & FM */
1675         if (chip->revision >= VIA_REV_686_H) {
1676                 rev_h = 1;
1677                 if (mpu_port[dev] >= 0x200) {   /* force MIDI */
1678                         mpu_port[dev] &= 0xfffc;
1679                         pci_write_config_dword(chip->pci, 0x18, mpu_port[dev] | 0x01);
1680 #ifdef CONFIG_PM
1681                         chip->mpu_port_saved = mpu_port[dev];
1682 #endif
1683                 } else {
1684                         mpu_port[dev] = pci_resource_start(chip->pci, 2);
1685                 }
1686         } else {
1687                 switch (mpu_port[dev]) {        /* force MIDI */
1688                 case 0x300:
1689                 case 0x310:
1690                 case 0x320:
1691                 case 0x330:
1692                         legacy_cfg &= ~(3 << 2);
1693                         legacy_cfg |= (mpu_port[dev] & 0x0030) >> 2;
1694                         break;
1695                 default:                        /* no, use BIOS settings */
1696                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1697                                 mpu_port[dev] = 0x300 + ((legacy_cfg & 0x000c) << 2);
1698                         break;
1699                 }
1700         }
1701         if (mpu_port[dev] >= 0x200 &&
1702             (chip->mpu_res = request_region(mpu_port[dev], 2, "VIA82xx MPU401")) != NULL) {
1703                 if (rev_h)
1704                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1705                 legacy |= VIA_FUNC_ENABLE_MIDI;
1706         } else {
1707                 if (rev_h)
1708                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1709                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1710                 mpu_port[dev] = 0;
1711         }
1712
1713 #ifdef SUPPORT_JOYSTICK
1714 #define JOYSTICK_ADDR   0x200
1715         if (joystick[dev] &&
1716             (chip->res_joystick = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport")) != NULL) {
1717                 legacy |= VIA_FUNC_ENABLE_GAME;
1718                 chip->gameport.io = JOYSTICK_ADDR;
1719         }
1720 #endif
1721
1722         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1723         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1724         if (chip->mpu_res) {
1725                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1726                                         mpu_port[dev], 1,
1727                                         chip->irq, 0, &chip->rmidi) < 0) {
1728                         printk(KERN_WARNING "unable to initialize MPU-401 at 0x%lx, skipping\n", mpu_port[dev]);
1729                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1730                 } else {
1731                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1732                 }
1733                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1734         }
1735
1736 #ifdef SUPPORT_JOYSTICK
1737         if (chip->res_joystick)
1738                 gameport_register_port(&chip->gameport);
1739 #endif
1740
1741 #ifdef CONFIG_PM
1742         chip->legacy_saved = legacy;
1743         chip->legacy_cfg_saved = legacy_cfg;
1744 #endif
1745
1746         return 0;
1747 }
1748
1749
1750 /*
1751  * proc interface
1752  */
1753 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1754 {
1755         via82xx_t *chip = entry->private_data;
1756         int i;
1757
1758         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1759         for (i = 0; i < 0xa0; i += 4) {
1760                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1761         }
1762 }
1763
1764 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1765 {
1766         snd_info_entry_t *entry;
1767
1768         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1769                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1770 }
1771
1772 /*
1773  *
1774  */
1775
1776 static int __devinit snd_via82xx_chip_init(via82xx_t *chip)
1777 {
1778         ac97_t ac97;
1779         unsigned int val;
1780         int max_count;
1781         unsigned char pval;
1782
1783         memset(&ac97, 0, sizeof(ac97));
1784         ac97.private_data = chip;
1785
1786 #if 0 /* broken on K7M? */
1787         if (chip->chip_type == TYPE_VIA686)
1788                 /* disable all legacy ports */
1789                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1790 #endif
1791         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1792         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1793                 /* deassert ACLink reset, force SYNC */
1794                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1795                                       VIA_ACLINK_CTRL_ENABLE |
1796                                       VIA_ACLINK_CTRL_RESET |
1797                                       VIA_ACLINK_CTRL_SYNC);
1798                 udelay(100);
1799 #if 1 /* FIXME: should we do full reset here for all chip models? */
1800                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
1801                 udelay(100);
1802 #else
1803                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
1804                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1805                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
1806                 udelay(2);
1807 #endif
1808                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1809                 /* note - FM data out has trouble with non VRA codecs !! */
1810                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1811                 udelay(100);
1812         }
1813
1814         /* Make sure VRA is enabled, in case we didn't do a
1815          * complete codec reset, above */
1816         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
1817         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
1818                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1819                 /* note - FM data out has trouble with non VRA codecs !! */
1820                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1821                 udelay(100);
1822         }
1823
1824         /* wait until codec ready */
1825         max_count = ((3 * HZ) / 4) + 1;
1826         do {
1827                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1828                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
1829                         break;
1830                 set_current_state(TASK_UNINTERRUPTIBLE);
1831                 schedule_timeout(1);
1832         } while (--max_count > 0);
1833
1834         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1835                 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
1836
1837         /* and then reset codec.. */
1838         snd_via82xx_codec_ready(chip, 0);
1839         snd_via82xx_codec_write(&ac97, AC97_RESET, 0x0000);
1840         snd_via82xx_codec_read(&ac97, 0);
1841
1842 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
1843         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1844                                  VIA_REG_AC97_SECONDARY_VALID |
1845                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1846         max_count = ((3 * HZ) / 4) + 1;
1847         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1848                                  VIA_REG_AC97_SECONDARY_VALID |
1849                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1850         do {
1851                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1852                         chip->ac97_secondary = 1;
1853                         goto __ac97_ok2;
1854                 }
1855                 set_current_state(TASK_INTERRUPTIBLE);
1856                 schedule_timeout(1);
1857         } while (--max_count > 0);
1858         /* This is ok, the most of motherboards have only one codec */
1859
1860       __ac97_ok2:
1861 #endif
1862
1863         if (chip->chip_type == TYPE_VIA686) {
1864                 /* route FM trap to IRQ, disable FM trap */
1865                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1866                 /* disable all GPI interrupts */
1867                 outl(0, VIAREG(chip, GPI_INTR));
1868         }
1869
1870         if (chip->chip_type != TYPE_VIA686) {
1871                 /* Workaround for Award BIOS bug:
1872                  * DXS channels don't work properly with VRA if MC97 is disabled.
1873                  */
1874                 struct pci_dev *pci;
1875                 pci = pci_find_device(0x1106, 0x3068, NULL); /* MC97 */
1876                 if (pci) {
1877                         unsigned char data;
1878                         pci_read_config_byte(pci, 0x44, &data);
1879                         pci_write_config_byte(pci, 0x44, data | 0x40);
1880                 }
1881         }
1882
1883         return 0;
1884 }
1885
1886 #ifdef CONFIG_PM
1887 /*
1888  * power management
1889  */
1890 static int snd_via82xx_suspend(snd_card_t *card, unsigned int state)
1891 {
1892         via82xx_t *chip = card->pm_private_data;
1893         int i;
1894
1895         for (i = 0; i < 2; i++)
1896                 if (chip->pcms[i])
1897                         snd_pcm_suspend_all(chip->pcms[i]);
1898         for (i = 0; i < chip->num_devs; i++)
1899                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1900         synchronize_irq(chip->irq);
1901         snd_ac97_suspend(chip->ac97);
1902
1903         /* save misc values */
1904         if (chip->chip_type != TYPE_VIA686) {
1905                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
1906                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
1907                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1908         }
1909
1910         pci_set_power_state(chip->pci, 3);
1911         pci_disable_device(chip->pci);
1912         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1913         return 0;
1914 }
1915
1916 static int snd_via82xx_resume(snd_card_t *card, unsigned int state)
1917 {
1918         via82xx_t *chip = card->pm_private_data;
1919         int idx, i;
1920
1921         pci_enable_device(chip->pci);
1922         pci_set_power_state(chip->pci, 0);
1923
1924         snd_via82xx_chip_init(chip);
1925
1926         if (chip->chip_type == TYPE_VIA686) {
1927                 if (chip->mpu_port_saved)
1928                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
1929                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
1930                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
1931         } else {
1932                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
1933                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
1934                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1935                 for (idx = 0; idx < 4; idx++) {
1936                         unsigned long port = chip->port + 0x10 * idx;
1937                         for (i = 0; i < 2; i++)
1938                                 outb(chip->playback_volume[idx][i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1939                 }
1940         }
1941
1942         snd_ac97_resume(chip->ac97);
1943
1944         for (i = 0; i < chip->num_devs; i++)
1945                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1946
1947         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1948         return 0;
1949 }
1950 #endif /* CONFIG_PM */
1951
1952 static int snd_via82xx_free(via82xx_t *chip)
1953 {
1954         unsigned int i;
1955
1956         if (chip->irq < 0)
1957                 goto __end_hw;
1958         /* disable interrupts */
1959         for (i = 0; i < chip->num_devs; i++)
1960                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1961         synchronize_irq(chip->irq);
1962       __end_hw:
1963         if (chip->irq >= 0)
1964                 free_irq(chip->irq, (void *)chip);
1965         if (chip->mpu_res) {
1966                 release_resource(chip->mpu_res);
1967                 kfree_nocheck(chip->mpu_res);
1968         }
1969         pci_release_regions(chip->pci);
1970         if (chip->chip_type == TYPE_VIA686) {
1971 #ifdef SUPPORT_JOYSTICK
1972                 if (chip->res_joystick) {
1973                         gameport_unregister_port(&chip->gameport);
1974                         release_resource(chip->res_joystick);
1975                         kfree_nocheck(chip->res_joystick);
1976                 }
1977 #endif
1978                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
1979                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
1980         }
1981         kfree(chip);
1982         return 0;
1983 }
1984
1985 static int snd_via82xx_dev_free(snd_device_t *device)
1986 {
1987         via82xx_t *chip = device->device_data;
1988         return snd_via82xx_free(chip);
1989 }
1990
1991 static int __devinit snd_via82xx_create(snd_card_t * card,
1992                                         struct pci_dev *pci,
1993                                         int chip_type,
1994                                         int revision,
1995                                         unsigned int ac97_clock,
1996                                         via82xx_t ** r_via)
1997 {
1998         via82xx_t *chip;
1999         int err;
2000         static snd_device_ops_t ops = {
2001                 .dev_free =     snd_via82xx_dev_free,
2002         };
2003
2004         if ((err = pci_enable_device(pci)) < 0)
2005                 return err;
2006
2007         if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL)
2008                 return -ENOMEM;
2009
2010         chip->chip_type = chip_type;
2011         chip->revision = revision;
2012
2013         spin_lock_init(&chip->reg_lock);
2014         spin_lock_init(&chip->ac97_lock);
2015         spin_lock_init(&chip->rates[0].lock);
2016         spin_lock_init(&chip->rates[1].lock);
2017         chip->card = card;
2018         chip->pci = pci;
2019         chip->irq = -1;
2020
2021         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2022         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2023
2024         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2025                 kfree(chip);
2026                 return err;
2027         }
2028         chip->port = pci_resource_start(pci, 0);
2029         if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
2030                         card->driver, (void *)chip)) {
2031                 snd_printk("unable to grab IRQ %d\n", pci->irq);
2032                 snd_via82xx_free(chip);
2033                 return -EBUSY;
2034         }
2035         chip->irq = pci->irq;
2036         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2037                 chip->ac97_clock = ac97_clock;
2038         synchronize_irq(chip->irq);
2039
2040         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2041                 snd_via82xx_free(chip);
2042                 return err;
2043         }
2044
2045         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2046                 snd_via82xx_free(chip);
2047                 return err;
2048         }
2049
2050         /* The 8233 ac97 controller does not implement the master bit
2051          * in the pci command register. IMHO this is a violation of the PCI spec.
2052          * We call pci_set_master here because it does not hurt. */
2053         pci_set_master(pci);
2054
2055         snd_card_set_dev(card, &pci->dev);
2056
2057         *r_via = chip;
2058         return 0;
2059 }
2060
2061 struct via823x_info {
2062         int revision;
2063         char *name;
2064         int type;
2065 };
2066 static struct via823x_info via823x_cards[] __devinitdata = {
2067         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2068         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2069         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2070         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2071         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2072 };
2073
2074 /*
2075  * auto detection of DXS channel supports.
2076  */
2077 struct dxs_whitelist {
2078         unsigned short vendor;
2079         unsigned short device;
2080         unsigned short mask;
2081         short action;   /* new dxs_support value */
2082 };
2083
2084 static int __devinit check_dxs_list(struct pci_dev *pci)
2085 {
2086         static struct dxs_whitelist whitelist[] = {
2087                 { .vendor = 0x1005, .device = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2088                 { .vendor = 0x1019, .device = 0x0996, .action = VIA_DXS_48K },
2089                 { .vendor = 0x1019, .device = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2090                 { .vendor = 0x1019, .device = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2091                 { .vendor = 0x1025, .device = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2092                 { .vendor = 0x1043, .device = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2093                 { .vendor = 0x1043, .device = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2094                 { .vendor = 0x1043, .device = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2095                 { .vendor = 0x1071, .device = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2096                 { .vendor = 0x10cf, .device = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2097                 { .vendor = 0x1106, .device = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2098                 { .vendor = 0x1106, .device = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2099                 { .vendor = 0x1297, .device = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2100                 { .vendor = 0x1297, .device = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2101                 { .vendor = 0x1458, .device = 0xa002, .action = VIA_DXS_NO_VRA }, /* Gigabyte GA-7VAXP (FIXME: or DXS_ENABLE?) */
2102                 { .vendor = 0x147b, .device = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2103                 { .vendor = 0x14ff, .device = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2104                 { .vendor = 0x1462, .device = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2105                 { .vendor = 0x1462, .device = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2106                 { .vendor = 0x1462, .device = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2107                 { .vendor = 0x1584, .device = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2108                 { .vendor = 0x1584, .device = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2109                 { .vendor = 0x161f, .device = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2110                 { .vendor = 0x161f, .device = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2111                 { .vendor = 0x1631, .device = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2112                 { .vendor = 0x1695, .device = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2113                 { .vendor = 0x1849, .device = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2114                 { } /* terminator */
2115         };
2116         struct dxs_whitelist *w;
2117         unsigned short subsystem_vendor;
2118         unsigned short subsystem_device;
2119
2120         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2121         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2122
2123         for (w = whitelist; w->vendor; w++) {
2124                 if (w->vendor != subsystem_vendor)
2125                         continue;
2126                 if (w->mask) {
2127                         if ((w->mask & subsystem_device) == w->device)
2128                                 return w->action;
2129                 } else {
2130                         if (subsystem_device == w->device)
2131                                 return w->action;
2132                 }
2133         }
2134
2135         /*
2136          * not detected, try 48k rate only to be sure.
2137          */
2138         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2139         printk(KERN_INFO "         Please try dxs_support=1 or dxs_support=4 option\n");
2140         printk(KERN_INFO "         and report if it works on your machine.\n");
2141         return VIA_DXS_48K;
2142 };
2143
2144 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2145                                        const struct pci_device_id *pci_id)
2146 {
2147         static int dev;
2148         snd_card_t *card;
2149         via82xx_t *chip;
2150         unsigned char revision;
2151         int chip_type = 0, card_type;
2152         unsigned int i;
2153         int err;
2154
2155         if (dev >= SNDRV_CARDS)
2156                 return -ENODEV;
2157         if (!enable[dev]) {
2158                 dev++;
2159                 return -ENOENT;
2160         }
2161
2162         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
2163         if (card == NULL)
2164                 return -ENOMEM;
2165
2166         card_type = pci_id->driver_data;
2167         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2168         switch (card_type) {
2169         case TYPE_CARD_VIA686:
2170                 strcpy(card->driver, "VIA686A");
2171                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2172                 chip_type = TYPE_VIA686;
2173                 break;
2174         case TYPE_CARD_VIA8233:
2175                 chip_type = TYPE_VIA8233;
2176                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2177                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2178                         if (revision == via823x_cards[i].revision) {
2179                                 chip_type = via823x_cards[i].type;
2180                                 strcpy(card->shortname, via823x_cards[i].name);
2181                                 break;
2182                         }
2183                 }
2184                 if (chip_type != TYPE_VIA8233A) {
2185                         if (dxs_support[dev] == VIA_DXS_AUTO)
2186                                 dxs_support[dev] = check_dxs_list(pci);
2187                         /* force to use VIA8233 or 8233A model according to
2188                          * dxs_support module option
2189                          */
2190                         if (dxs_support[dev] == VIA_DXS_DISABLE)
2191                                 chip_type = TYPE_VIA8233A;
2192                         else
2193                                 chip_type = TYPE_VIA8233;
2194                 }
2195                 if (chip_type == TYPE_VIA8233A)
2196                         strcpy(card->driver, "VIA8233A");
2197                 else
2198                         strcpy(card->driver, "VIA8233");
2199                 break;
2200         default:
2201                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2202                 err = -EINVAL;
2203                 goto __error;
2204         }
2205
2206         if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
2207                 goto __error;
2208         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk[dev])) < 0)
2209                 goto __error;
2210
2211         if (chip_type == TYPE_VIA686) {
2212                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2213                     (err = snd_via686_init_misc(chip, dev)) < 0)
2214                         goto __error;
2215         } else {
2216                 if (chip_type == TYPE_VIA8233A) {
2217                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2218                                 goto __error;
2219                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2220                 } else {
2221                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2222                                 goto __error;
2223                         if (dxs_support[dev] == VIA_DXS_48K)
2224                                 chip->dxs_fixed = 1;
2225                         else if (dxs_support[dev] == VIA_DXS_NO_VRA)
2226                                 chip->no_vra = 1;
2227                 }
2228                 if ((err = snd_via8233_init_misc(chip, dev)) < 0)
2229                         goto __error;
2230         }
2231
2232         snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
2233
2234         /* disable interrupts */
2235         for (i = 0; i < chip->num_devs; i++)
2236                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2237
2238         sprintf(card->longname, "%s at 0x%lx, irq %d",
2239                 card->shortname, chip->port, chip->irq);
2240
2241         snd_via82xx_proc_init(chip);
2242
2243         if ((err = snd_card_register(card)) < 0) {
2244                 snd_card_free(card);
2245                 return err;
2246         }
2247         pci_set_drvdata(pci, card);
2248         dev++;
2249         return 0;
2250
2251  __error:
2252         snd_card_free(card);
2253         return err;
2254 }
2255
2256 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2257 {
2258         snd_card_free(pci_get_drvdata(pci));
2259         pci_set_drvdata(pci, NULL);
2260 }
2261
2262 static struct pci_driver driver = {
2263         .name = "VIA 82xx Audio",
2264         .id_table = snd_via82xx_ids,
2265         .probe = snd_via82xx_probe,
2266         .remove = __devexit_p(snd_via82xx_remove),
2267         SND_PCI_PM_CALLBACKS
2268 };
2269
2270 static int __init alsa_card_via82xx_init(void)
2271 {
2272         return pci_module_init(&driver);
2273 }
2274
2275 static void __exit alsa_card_via82xx_exit(void)
2276 {
2277         pci_unregister_driver(&driver);
2278 }
2279
2280 module_init(alsa_card_via82xx_init)
2281 module_exit(alsa_card_via82xx_exit)