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_DEFAULT_IDX1;  /* Index 0-MAX */
  77 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  78 static long mpu_port;
  79 #ifdef SUPPORT_JOYSTICK
  80 static int joystick;
  81 #endif
  82 static int ac97_clock = 48000;
  83 static char *ac97_quirk;
  84 static int dxs_support;
  85
  86 module_param(index, int, 0444);
  87 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  88 module_param(id, charp, 0444);
  89 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  90 module_param(mpu_port, long, 0444);
  91 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  92 #ifdef SUPPORT_JOYSTICK
  93 module_param(joystick, bool, 0444);
  94 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  95 #endif
  96 module_param(ac97_clock, int, 0444);
  97 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
  98 module_param(ac97_quirk, charp, 0444);
  99 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 100 module_param(dxs_support, int, 0444);
 101 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 102
 103 /* just for backward compatibility */
 104 static int enable;
 105 module_param(enable, int, 0444);
 106
 107
 108 /* revision numbers for via686 */
 109 #define VIA_REV_686_A           0x10
 110 #define VIA_REV_686_B           0x11
 111 #define VIA_REV_686_C           0x12
 112 #define VIA_REV_686_D           0x13
 113 #define VIA_REV_686_E           0x14
 114 #define VIA_REV_686_H           0x20
 115
 116 /* revision numbers for via8233 */
 117 #define VIA_REV_PRE_8233        0x10    /* not in market */
 118 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 119 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 120 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 121 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 122 #define VIA_REV_8237            0x60
 123
 124 /*
 125  *  Direct registers
 126  */
 127
 128 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 129 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 130
 131 /* common offsets */
 132 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 133 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 134 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 135 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 136 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 137 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 138 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 139 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 140 #define   VIA_REG_CTRL_START            0x80    /* WO */
 141 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 142 #define   VIA_REG_CTRL_AUTOSTART        0x20
 143 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 144 #define   VIA_REG_CTRL_INT_STOP         0x04
 145 #define   VIA_REG_CTRL_INT_EOL          0x02
 146 #define   VIA_REG_CTRL_INT_FLAG         0x01
 147 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 148 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 149 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 150 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 151 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 152 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 153 #define   VIA_REG_TYPE_INT_LLINE        0x00
 154 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 155 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 156 #define   VIA_REG_TYPE_INT_MASK         0x0c
 157 #define   VIA_REG_TYPE_INT_EOL          0x02
 158 #define   VIA_REG_TYPE_INT_FLAG         0x01
 159 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 160 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 161 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 162 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 163 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 164 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 165 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 166
 167 #define DEFINE_VIA_REGSET(name,val) \
 168 enum {\
 169         VIA_REG_##name##_STATUS         = (val),\
 170         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 171         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 172         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 173         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 174         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 175         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 176 }
 177
 178 /* playback block */
 179 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 180 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 181 DEFINE_VIA_REGSET(FM, 0x20);
 182
 183 /* AC'97 */
 184 #define VIA_REG_AC97                    0x80    /* dword */
 185 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 186 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 187 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 188 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 189 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 190 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 191 #define   VIA_REG_AC97_BUSY             (1<<24)
 192 #define   VIA_REG_AC97_READ             (1<<23)
 193 #define   VIA_REG_AC97_CMD_SHIFT        16
 194 #define   VIA_REG_AC97_CMD_MASK         0x7e
 195 #define   VIA_REG_AC97_DATA_SHIFT       0
 196 #define   VIA_REG_AC97_DATA_MASK        0xffff
 197
 198 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 199 /* via686 */
 200 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 201 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 202 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 203 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 204 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 205 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 206 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 207 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 208 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 209 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 210 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 211 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 212 /* via8233 */
 213 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 214 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 215 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 216 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 217 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 218 #define   VIA8233_REG_SGD_CHAN_SDX      0
 219 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 220 #define   VIA8233_REG_SGD_CHAN_REC      6
 221 #define   VIA8233_REG_SGD_CHAN_REC1     7
 222
 223 #define VIA_REG_GPI_STATUS              0x88
 224 #define VIA_REG_GPI_INTR                0x8c
 225
 226 /* multi-channel and capture registers for via8233 */
 227 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 228 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 229
 230 /* via8233-specific registers */
 231 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 232 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 233 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 234 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 235 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 236 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 237 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 238 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 239
 240 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 241
 242 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 243 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 244 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 245 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 246
 247 #define VIA_TBL_BIT_FLAG        0x40000000
 248 #define VIA_TBL_BIT_EOL         0x80000000
 249
 250 /* pci space */
 251 #define VIA_ACLINK_STAT         0x40
 252 #define  VIA_ACLINK_C11_READY   0x20
 253 #define  VIA_ACLINK_C10_READY   0x10
 254 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 255 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 256 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 257 #define VIA_ACLINK_CTRL         0x41
 258 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 259 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 260 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 261 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 262 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 263 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 264 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 265 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 266 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 267                                  VIA_ACLINK_CTRL_RESET|\
 268                                  VIA_ACLINK_CTRL_PCM|\
 269                                  VIA_ACLINK_CTRL_VRA)
 270 #define VIA_FUNC_ENABLE         0x42
 271 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 272 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 273 #define  VIA_FUNC_RX2C_WRITE    0x20
 274 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 275 #define  VIA_FUNC_ENABLE_GAME   0x08
 276 #define  VIA_FUNC_ENABLE_FM     0x04
 277 #define  VIA_FUNC_ENABLE_MIDI   0x02
 278 #define  VIA_FUNC_ENABLE_SB     0x01
 279 #define VIA_PNP_CONTROL         0x43
 280 #define VIA_FM_NMI_CTRL         0x48
 281 #define VIA8233_VOLCHG_CTRL     0x48
 282 #define VIA8233_SPDIF_CTRL      0x49
 283 #define  VIA8233_SPDIF_DX3      0x08
 284 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 285 #define  VIA8233_SPDIF_SLOT_1011        0x00
 286 #define  VIA8233_SPDIF_SLOT_34          0x01
 287 #define  VIA8233_SPDIF_SLOT_78          0x02
 288 #define  VIA8233_SPDIF_SLOT_69          0x03
 289
 290 /*
 291  */
 292
 293 #define VIA_DXS_AUTO    0
 294 #define VIA_DXS_ENABLE  1
 295 #define VIA_DXS_DISABLE 2
 296 #define VIA_DXS_48K     3
 297 #define VIA_DXS_NO_VRA  4
 298 #define VIA_DXS_SRC     5
 299
 300
 301 /*
 302  */
 303
 304 typedef struct _snd_via82xx via82xx_t;
 305 typedef struct via_dev viadev_t;
 306
 307 /*
 308  * pcm stream
 309  */
 310
 311 struct snd_via_sg_table {
 312         unsigned int offset;
 313         unsigned int size;
 314 } ;
 315
 316 #define VIA_TABLE_SIZE  255
 317
 318 struct via_dev {
 319         unsigned int reg_offset;
 320         unsigned long port;
 321         int direction;  /* playback = 0, capture = 1 */
 322         snd_pcm_substream_t *substream;
 323         int running;
 324         unsigned int tbl_entries; /* # descriptors */
 325         struct snd_dma_buffer table;
 326         struct snd_via_sg_table *idx_table;
 327         /* for recovery from the unexpected pointer */
 328         unsigned int lastpos;
 329         unsigned int fragsize;
 330         unsigned int bufsize;
 331         unsigned int bufsize2;
 332 };
 333
 334
 335 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 336 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 337
 338 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 339
 340 struct via_rate_lock {
 341         spinlock_t lock;
 342         int rate;
 343         int used;
 344 };
 345
 346 struct _snd_via82xx {
 347         int irq;
 348
 349         unsigned long port;
 350         struct resource *mpu_res;
 351         int chip_type;
 352         unsigned char revision;
 353
 354         unsigned char old_legacy;
 355         unsigned char old_legacy_cfg;
 356 #ifdef CONFIG_PM
 357         unsigned char legacy_saved;
 358         unsigned char legacy_cfg_saved;
 359         unsigned char spdif_ctrl_saved;
 360         unsigned char capture_src_saved[2];
 361         unsigned int mpu_port_saved;
 362 #endif
 363
 364         unsigned char playback_volume[2]; /* for VIA8233/C/8235; default = 0 */
 365
 366         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 367
 368         struct pci_dev *pci;
 369         snd_card_t *card;
 370
 371         unsigned int num_devs;
 372         unsigned int playback_devno, multi_devno, capture_devno;
 373         viadev_t devs[VIA_MAX_DEVS];
 374         struct via_rate_lock rates[2]; /* playback and capture */
 375         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 376         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 377         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 378         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 379
 380         snd_pcm_t *pcms[2];
 381         snd_rawmidi_t *rmidi;
 382
 383         ac97_bus_t *ac97_bus;
 384         ac97_t *ac97;
 385         unsigned int ac97_clock;
 386         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 387
 388         spinlock_t reg_lock;
 389         snd_info_entry_t *proc_entry;
 390
 391 #ifdef SUPPORT_JOYSTICK
 392         struct gameport *gameport;
 393 #endif
 394 };
 395
 396 static struct pci_device_id snd_via82xx_ids[] = {
 397         { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },    /* 686A */
 398         { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },   /* VT8233 */
 399         { 0, }
 400 };
 401
 402 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 403
 404 /*
 405  */
 406
 407 /*
 408  * allocate and initialize the descriptor buffers
 409  * periods = number of periods
 410  * fragsize = period size in bytes
 411  */
 412 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 413                            struct pci_dev *pci,
 414                            unsigned int periods, unsigned int fragsize)
 415 {
 416         unsigned int i, idx, ofs, rest;
 417         via82xx_t *chip = snd_pcm_substream_chip(substream);
 418         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 419
 420         if (dev->table.area == NULL) {
 421                 /* the start of each lists must be aligned to 8 bytes,
 422                  * but the kernel pages are much bigger, so we don't care
 423                  */
 424                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 425                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 426                                         &dev->table) < 0)
 427                         return -ENOMEM;
 428         }
 429         if (! dev->idx_table) {
 430                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 431                 if (! dev->idx_table)
 432                         return -ENOMEM;
 433         }
 434
 435         /* fill the entries */
 436         idx = 0;
 437         ofs = 0;
 438         for (i = 0; i < periods; i++) {
 439                 rest = fragsize;
 440                 /* fill descriptors for a period.
 441                  * a period can be split to several descriptors if it's
 442                  * over page boundary.
 443                  */
 444                 do {
 445                         unsigned int r;
 446                         unsigned int flag;
 447
 448                         if (idx >= VIA_TABLE_SIZE) {
 449                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 450                                 return -EINVAL;
 451                         }
 452                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 453                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 454                         if (rest < r)
 455                                 r = rest;
 456                         rest -= r;
 457                         if (! rest) {
 458                                 if (i == periods - 1)
 459                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 460                                 else
 461                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 462                         } else
 463                                 flag = 0; /* period continues to the next */
 464                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 465                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 466                         dev->idx_table[idx].offset = ofs;
 467                         dev->idx_table[idx].size = r;
 468                         ofs += r;
 469                         idx++;
 470                 } while (rest > 0);
 471         }
 472         dev->tbl_entries = idx;
 473         dev->bufsize = periods * fragsize;
 474         dev->bufsize2 = dev->bufsize / 2;
 475         dev->fragsize = fragsize;
 476         return 0;
 477 }
 478
 479
 480 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 481                            struct pci_dev *pci)
 482 {
 483         if (dev->table.area) {
 484                 snd_dma_free_pages(&dev->table);
 485                 dev->table.area = NULL;
 486         }
 487         kfree(dev->idx_table);
 488         dev->idx_table = NULL;
 489         return 0;
 490 }
 491
 492 /*
 493  *  Basic I/O
 494  */
 495
 496 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
 497 {
 498         return inl(VIAREG(chip, AC97));
 499 }
 500
 501 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
 502 {
 503         outl(val, VIAREG(chip, AC97));
 504 }
 505
 506 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
 507 {
 508         unsigned int timeout = 1000;    /* 1ms */
 509         unsigned int val;
 510
 511         while (timeout-- > 0) {
 512                 udelay(1);
 513                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 514                         return val & 0xffff;
 515         }
 516         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
 517         return -EIO;
 518 }
 519
 520 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
 521 {
 522         unsigned int timeout = 1000;    /* 1ms */
 523         unsigned int val, val1;
 524         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 525                                          VIA_REG_AC97_SECONDARY_VALID;
 526
 527         while (timeout-- > 0) {
 528                 val = snd_via82xx_codec_xread(chip);
 529                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 530                 if (val1 == stat)
 531                         return val & 0xffff;
 532                 udelay(1);
 533         }
 534         return -EIO;
 535 }
 536
 537 static void snd_via82xx_codec_wait(ac97_t *ac97)
 538 {
 539         via82xx_t *chip = ac97->private_data;
 540         int err;
 541         err = snd_via82xx_codec_ready(chip, ac97->num);
 542         /* here we need to wait fairly for long time.. */
 543         msleep(500);
 544 }
 545
 546 static void snd_via82xx_codec_write(ac97_t *ac97,
 547                                     unsigned short reg,
 548                                     unsigned short val)
 549 {
 550         via82xx_t *chip = ac97->private_data;
 551         unsigned int xval;
 552
 553         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 554         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 555         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 556         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 557         snd_via82xx_codec_xwrite(chip, xval);
 558         snd_via82xx_codec_ready(chip, ac97->num);
 559 }
 560
 561 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 562 {
 563         via82xx_t *chip = ac97->private_data;
 564         unsigned int xval, val = 0xffff;
 565         int again = 0;
 566
 567         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 568         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 569         xval |= VIA_REG_AC97_READ;
 570         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 571         while (1) {
 572                 if (again++ > 3) {
 573                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 574                         return 0xffff;
 575                 }
 576                 snd_via82xx_codec_xwrite(chip, xval);
 577                 udelay (20);
 578                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 579                         udelay(25);
 580                         val = snd_via82xx_codec_xread(chip);
 581                         break;
 582                 }
 583         }
 584         return val & 0xffff;
 585 }
 586
 587 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 588 {
 589         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 590              VIADEV_REG(viadev, OFFSET_CONTROL));
 591         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 592         udelay(50);
 593         /* disable interrupts */
 594         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 595         /* clear interrupts */
 596         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 597         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 598         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 599         viadev->lastpos = 0;
 600 }
 601
 602
 603 /*
 604  *  Interrupt handler
 605  */
 606
 607 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 608 {
 609         via82xx_t *chip = dev_id;
 610         unsigned int status;
 611         unsigned int i;
 612
 613         status = inl(VIAREG(chip, SGD_SHADOW));
 614         if (! (status & chip->intr_mask)) {
 615                 if (chip->rmidi)
 616                         /* check mpu401 interrupt */
 617                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 618                 return IRQ_NONE;
 619         }
 620
 621         /* check status for each stream */
 622         spin_lock(&chip->reg_lock);
 623         for (i = 0; i < chip->num_devs; i++) {
 624                 viadev_t *viadev = &chip->devs[i];
 625                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 626                 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
 627                 if (! c_status)
 628                         continue;
 629                 if (viadev->substream && viadev->running) {
 630                         spin_unlock(&chip->reg_lock);
 631                         snd_pcm_period_elapsed(viadev->substream);
 632                         spin_lock(&chip->reg_lock);
 633                 }
 634                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 635         }
 636         spin_unlock(&chip->reg_lock);
 637         return IRQ_HANDLED;
 638 }
 639
 640 /*
 641  *  PCM callbacks
 642  */
 643
 644 /*
 645  * trigger callback
 646  */
 647 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 648 {
 649         via82xx_t *chip = snd_pcm_substream_chip(substream);
 650         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 651         unsigned char val;
 652
 653         if (chip->chip_type != TYPE_VIA686)
 654                 val = VIA_REG_CTRL_INT;
 655         else
 656                 val = 0;
 657         switch (cmd) {
 658         case SNDRV_PCM_TRIGGER_START:
 659         case SNDRV_PCM_TRIGGER_RESUME:
 660                 val |= VIA_REG_CTRL_START;
 661                 viadev->running = 1;
 662                 break;
 663         case SNDRV_PCM_TRIGGER_STOP:
 664         case SNDRV_PCM_TRIGGER_SUSPEND:
 665                 val = VIA_REG_CTRL_TERMINATE;
 666                 viadev->running = 0;
 667                 break;
 668         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 669                 val |= VIA_REG_CTRL_PAUSE;
 670                 viadev->running = 0;
 671                 break;
 672         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 673                 viadev->running = 1;
 674                 break;
 675         default:
 676                 return -EINVAL;
 677         }
 678         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 679         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 680                 snd_via82xx_channel_reset(chip, viadev);
 681         return 0;
 682 }
 683
 684
 685 /*
 686  * pointer callbacks
 687  */
 688
 689 /*
 690  * calculate the linear position at the given sg-buffer index and the rest count
 691  */
 692
 693 #define check_invalid_pos(viadev,pos) \
 694         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 695
 696 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 697 {
 698         unsigned int size, base, res;
 699
 700         size = viadev->idx_table[idx].size;
 701         base = viadev->idx_table[idx].offset;
 702         res = base + size - count;
 703
 704         /* check the validity of the calculated position */
 705         if (size < count) {
 706                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 707                 res = viadev->lastpos;
 708         } else {
 709                 if (! count) {
 710                         /* Some mobos report count = 0 on the DMA boundary,
 711                          * i.e. count = size indeed.
 712                          * Let's check whether this step is above the expected size.
 713                          */
 714                         int delta = res - viadev->lastpos;
 715                         if (delta < 0)
 716                                 delta += viadev->bufsize;
 717                         if ((unsigned int)delta > viadev->fragsize)
 718                                 res = base;
 719                 }
 720                 if (check_invalid_pos(viadev, res)) {
 721 #ifdef POINTER_DEBUG
 722                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count);
 723 #endif
 724                         /* count register returns full size when end of buffer is reached */
 725                         res = base + size;
 726                         if (check_invalid_pos(viadev, res)) {
 727                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 728                                 res = viadev->lastpos;
 729                         }
 730                 }
 731         }
 732         viadev->lastpos = res; /* remember the last position */
 733         if (res >= viadev->bufsize)
 734                 res -= viadev->bufsize;
 735         return res;
 736 }
 737
 738 /*
 739  * get the current pointer on via686
 740  */
 741 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 742 {
 743         via82xx_t *chip = snd_pcm_substream_chip(substream);
 744         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 745         unsigned int idx, ptr, count, res;
 746
 747         snd_assert(viadev->tbl_entries, return 0);
 748         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 749                 return 0;
 750
 751         spin_lock(&chip->reg_lock);
 752         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 753         /* The via686a does not have the current index register,
 754          * so we need to calculate the index from CURR_PTR.
 755          */
 756         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 757         if (ptr <= (unsigned int)viadev->table.addr)
 758                 idx = 0;
 759         else /* CURR_PTR holds the address + 8 */
 760                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 761         res = calc_linear_pos(viadev, idx, count);
 762         spin_unlock(&chip->reg_lock);
 763
 764         return bytes_to_frames(substream->runtime, res);
 765 }
 766
 767 /*
 768  * get the current pointer on via823x
 769  */
 770 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 771 {
 772         via82xx_t *chip = snd_pcm_substream_chip(substream);
 773         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 774         unsigned int idx, count, res;
 775         int timeout = 5000;
 776
 777         snd_assert(viadev->tbl_entries, return 0);
 778         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 779                 return 0;
 780         spin_lock(&chip->reg_lock);
 781         do {
 782                 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 783                 /* some mobos read 0 count */
 784                 if ((count & 0xffffff) || ! viadev->running)
 785                         break;
 786         } while (--timeout);
 787         if (! timeout)
 788                 snd_printd(KERN_ERR "zero position is read\n");
 789         idx = count >> 24;
 790         if (idx >= viadev->tbl_entries) {
 791 #ifdef POINTER_DEBUG
 792                 printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 793 #endif
 794                 res = viadev->lastpos;
 795         } else {
 796                 count &= 0xffffff;
 797                 res = calc_linear_pos(viadev, idx, count);
 798         }
 799         spin_unlock(&chip->reg_lock);
 800
 801         return bytes_to_frames(substream->runtime, res);
 802 }
 803
 804
 805 /*
 806  * hw_params callback:
 807  * allocate the buffer and build up the buffer description table
 808  */
 809 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 810                                  snd_pcm_hw_params_t * hw_params)
 811 {
 812         via82xx_t *chip = snd_pcm_substream_chip(substream);
 813         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 814         int err;
 815
 816         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 817         if (err < 0)
 818                 return err;
 819         err = build_via_table(viadev, substream, chip->pci,
 820                               params_periods(hw_params),
 821                               params_period_bytes(hw_params));
 822         if (err < 0)
 823                 return err;
 824
 825         return 0;
 826 }
 827
 828 /*
 829  * hw_free callback:
 830  * clean up the buffer description table and release the buffer
 831  */
 832 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 833 {
 834         via82xx_t *chip = snd_pcm_substream_chip(substream);
 835         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 836
 837         clean_via_table(viadev, substream, chip->pci);
 838         snd_pcm_lib_free_pages(substream);
 839         return 0;
 840 }
 841
 842
 843 /*
 844  * set up the table pointer
 845  */
 846 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 847 {
 848         snd_via82xx_codec_ready(chip, 0);
 849         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 850         udelay(20);
 851         snd_via82xx_codec_ready(chip, 0);
 852 }
 853
 854 /*
 855  * prepare callback for playback and capture on via686
 856  */
 857 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 858 {
 859         snd_via82xx_channel_reset(chip, viadev);
 860         /* this must be set after channel_reset */
 861         snd_via82xx_set_table_ptr(chip, viadev);
 862         outb(VIA_REG_TYPE_AUTOSTART |
 863              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 864              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 865              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 866              VIA_REG_TYPE_INT_EOL |
 867              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 868 }
 869
 870 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 871 {
 872         via82xx_t *chip = snd_pcm_substream_chip(substream);
 873         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 874         snd_pcm_runtime_t *runtime = substream->runtime;
 875
 876         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 877         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 878         via686_setup_format(chip, viadev, runtime);
 879         return 0;
 880 }
 881
 882 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 883 {
 884         via82xx_t *chip = snd_pcm_substream_chip(substream);
 885         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 886         snd_pcm_runtime_t *runtime = substream->runtime;
 887
 888         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 889         via686_setup_format(chip, viadev, runtime);
 890         return 0;
 891 }
 892
 893 /*
 894  * lock the current rate
 895  */
 896 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 897 {
 898         int changed = 0;
 899
 900         spin_lock_irq(&rec->lock);
 901         if (rec->rate != rate) {
 902                 if (rec->rate && rec->used > 1) /* already set */
 903                         changed = -EINVAL;
 904                 else {
 905                         rec->rate = rate;
 906                         changed = 1;
 907                 }
 908         }
 909         spin_unlock_irq(&rec->lock);
 910         return changed;
 911 }
 912
 913 /*
 914  * prepare callback for DSX playback on via823x
 915  */
 916 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
 917 {
 918         via82xx_t *chip = snd_pcm_substream_chip(substream);
 919         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 920         snd_pcm_runtime_t *runtime = substream->runtime;
 921         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
 922         int rate_changed;
 923         u32 rbits;
 924
 925         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
 926                 return rate_changed;
 927         if (rate_changed)
 928                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
 929                                   chip->no_vra ? 48000 : runtime->rate);
 930         if (chip->spdif_on && viadev->reg_offset == 0x30)
 931                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 932
 933         if (runtime->rate == 48000)
 934                 rbits = 0xfffff;
 935         else
 936                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
 937         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
 938         snd_via82xx_channel_reset(chip, viadev);
 939         snd_via82xx_set_table_ptr(chip, viadev);
 940         outb(chip->playback_volume[0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
 941         outb(chip->playback_volume[1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
 942         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 943              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
 944              rbits | /* rate */
 945              0xff000000,    /* STOP index is never reached */
 946              VIADEV_REG(viadev, OFFSET_STOP_IDX));
 947         udelay(20);
 948         snd_via82xx_codec_ready(chip, 0);
 949         return 0;
 950 }
 951
 952 /*
 953  * prepare callback for multi-channel playback on via823x
 954  */
 955 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
 956 {
 957         via82xx_t *chip = snd_pcm_substream_chip(substream);
 958         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 959         snd_pcm_runtime_t *runtime = substream->runtime;
 960         unsigned int slots;
 961         int fmt;
 962
 963         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
 964                 return -EINVAL;
 965         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 966         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
 967         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
 968         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 969         snd_via82xx_channel_reset(chip, viadev);
 970         snd_via82xx_set_table_ptr(chip, viadev);
 971
 972         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
 973         fmt |= runtime->channels << 4;
 974         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
 975 #if 0
 976         if (chip->revision == VIA_REV_8233A)
 977                 slots = 0;
 978         else
 979 #endif
 980         {
 981                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
 982                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
 983                 switch (runtime->channels) {
 984                 case 1: slots = (1<<0) | (1<<4); break;
 985                 case 2: slots = (1<<0) | (2<<4); break;
 986                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
 987                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
 988                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
 989                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
 990                 default: slots = 0; break;
 991                 }
 992         }
 993         /* STOP index is never reached */
 994         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
 995         udelay(20);
 996         snd_via82xx_codec_ready(chip, 0);
 997         return 0;
 998 }
 999
1000 /*
1001  * prepare callback for capture on via823x
1002  */
1003 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1004 {
1005         via82xx_t *chip = snd_pcm_substream_chip(substream);
1006         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1007         snd_pcm_runtime_t *runtime = substream->runtime;
1008
1009         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1010                 return -EINVAL;
1011         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1012         snd_via82xx_channel_reset(chip, viadev);
1013         snd_via82xx_set_table_ptr(chip, viadev);
1014         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1015         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1016              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1017              0xff000000,    /* STOP index is never reached */
1018              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1019         udelay(20);
1020         snd_via82xx_codec_ready(chip, 0);
1021         return 0;
1022 }
1023
1024
1025 /*
1026  * pcm hardware definition, identical for both playback and capture
1027  */
1028 static snd_pcm_hardware_t snd_via82xx_hw =
1029 {
1030         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1031                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1032                                  SNDRV_PCM_INFO_MMAP_VALID |
1033                                  /* SNDRV_PCM_INFO_RESUME | */
1034                                  SNDRV_PCM_INFO_PAUSE),
1035         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1036         .rates =                SNDRV_PCM_RATE_48000,
1037         .rate_min =             48000,
1038         .rate_max =             48000,
1039         .channels_min =         1,
1040         .channels_max =         2,
1041         .buffer_bytes_max =     128 * 1024,
1042         .period_bytes_min =     32,
1043         .period_bytes_max =     128 * 1024,
1044         .periods_min =          2,
1045         .periods_max =          VIA_TABLE_SIZE / 2,
1046         .fifo_size =            0,
1047 };
1048
1049
1050 /*
1051  * open callback skeleton
1052  */
1053 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1054 {
1055         snd_pcm_runtime_t *runtime = substream->runtime;
1056         int err;
1057         struct via_rate_lock *ratep;
1058
1059         runtime->hw = snd_via82xx_hw;
1060
1061         /* set the hw rate condition */
1062         ratep = &chip->rates[viadev->direction];
1063         spin_lock_irq(&ratep->lock);
1064         ratep->used++;
1065         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1066                 /* DXS#3 and spdif is on */
1067                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1068                 snd_pcm_limit_hw_rates(runtime);
1069         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1070                 /* fixed DXS playback rate */
1071                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1072                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1073         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1074                 /* use full SRC capabilities of DXS */
1075                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1076                                      SNDRV_PCM_RATE_8000_48000);
1077                 runtime->hw.rate_min = 8000;
1078                 runtime->hw.rate_max = 48000;
1079         } else if (! ratep->rate) {
1080                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1081                 runtime->hw.rates = chip->ac97->rates[idx];
1082                 snd_pcm_limit_hw_rates(runtime);
1083         } else {
1084                 /* a fixed rate */
1085                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1086                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1087         }
1088         spin_unlock_irq(&ratep->lock);
1089
1090         /* we may remove following constaint when we modify table entries
1091            in interrupt */
1092         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1093                 return err;
1094
1095         runtime->private_data = viadev;
1096         viadev->substream = substream;
1097
1098         return 0;
1099 }
1100
1101
1102 /*
1103  * open callback for playback on via686 and via823x DSX
1104  */
1105 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1106 {
1107         via82xx_t *chip = snd_pcm_substream_chip(substream);
1108         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1109         int err;
1110
1111         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1112                 return err;
1113         return 0;
1114 }
1115
1116 /*
1117  * open callback for playback on via823x multi-channel
1118  */
1119 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1120 {
1121         via82xx_t *chip = snd_pcm_substream_chip(substream);
1122         viadev_t *viadev = &chip->devs[chip->multi_devno];
1123         int err;
1124         /* channels constraint for VIA8233A
1125          * 3 and 5 channels are not supported
1126          */
1127         static unsigned int channels[] = {
1128                 1, 2, 4, 6
1129         };
1130         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1131                 .count = ARRAY_SIZE(channels),
1132                 .list = channels,
1133                 .mask = 0,
1134         };
1135
1136         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1137                 return err;
1138         substream->runtime->hw.channels_max = 6;
1139         if (chip->revision == VIA_REV_8233A)
1140                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1141         return 0;
1142 }
1143
1144 /*
1145  * open callback for capture on via686 and via823x
1146  */
1147 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1148 {
1149         via82xx_t *chip = snd_pcm_substream_chip(substream);
1150         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1151
1152         return snd_via82xx_pcm_open(chip, viadev, substream);
1153 }
1154
1155 /*
1156  * close callback
1157  */
1158 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1159 {
1160         via82xx_t *chip = snd_pcm_substream_chip(substream);
1161         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1162         struct via_rate_lock *ratep;
1163
1164         /* release the rate lock */
1165         ratep = &chip->rates[viadev->direction];
1166         spin_lock_irq(&ratep->lock);
1167         ratep->used--;
1168         if (! ratep->used)
1169                 ratep->rate = 0;
1170         spin_unlock_irq(&ratep->lock);
1171
1172         viadev->substream = NULL;
1173         return 0;
1174 }
1175
1176
1177 /* via686 playback callbacks */
1178 static snd_pcm_ops_t snd_via686_playback_ops = {
1179         .open =         snd_via82xx_playback_open,
1180         .close =        snd_via82xx_pcm_close,
1181         .ioctl =        snd_pcm_lib_ioctl,
1182         .hw_params =    snd_via82xx_hw_params,
1183         .hw_free =      snd_via82xx_hw_free,
1184         .prepare =      snd_via686_playback_prepare,
1185         .trigger =      snd_via82xx_pcm_trigger,
1186         .pointer =      snd_via686_pcm_pointer,
1187         .page =         snd_pcm_sgbuf_ops_page,
1188 };
1189
1190 /* via686 capture callbacks */
1191 static snd_pcm_ops_t snd_via686_capture_ops = {
1192         .open =         snd_via82xx_capture_open,
1193         .close =        snd_via82xx_pcm_close,
1194         .ioctl =        snd_pcm_lib_ioctl,
1195         .hw_params =    snd_via82xx_hw_params,
1196         .hw_free =      snd_via82xx_hw_free,
1197         .prepare =      snd_via686_capture_prepare,
1198         .trigger =      snd_via82xx_pcm_trigger,
1199         .pointer =      snd_via686_pcm_pointer,
1200         .page =         snd_pcm_sgbuf_ops_page,
1201 };
1202
1203 /* via823x DSX playback callbacks */
1204 static snd_pcm_ops_t snd_via8233_playback_ops = {
1205         .open =         snd_via82xx_playback_open,
1206         .close =        snd_via82xx_pcm_close,
1207         .ioctl =        snd_pcm_lib_ioctl,
1208         .hw_params =    snd_via82xx_hw_params,
1209         .hw_free =      snd_via82xx_hw_free,
1210         .prepare =      snd_via8233_playback_prepare,
1211         .trigger =      snd_via82xx_pcm_trigger,
1212         .pointer =      snd_via8233_pcm_pointer,
1213         .page =         snd_pcm_sgbuf_ops_page,
1214 };
1215
1216 /* via823x multi-channel playback callbacks */
1217 static snd_pcm_ops_t snd_via8233_multi_ops = {
1218         .open =         snd_via8233_multi_open,
1219         .close =        snd_via82xx_pcm_close,
1220         .ioctl =        snd_pcm_lib_ioctl,
1221         .hw_params =    snd_via82xx_hw_params,
1222         .hw_free =      snd_via82xx_hw_free,
1223         .prepare =      snd_via8233_multi_prepare,
1224         .trigger =      snd_via82xx_pcm_trigger,
1225         .pointer =      snd_via8233_pcm_pointer,
1226         .page =         snd_pcm_sgbuf_ops_page,
1227 };
1228
1229 /* via823x capture callbacks */
1230 static snd_pcm_ops_t snd_via8233_capture_ops = {
1231         .open =         snd_via82xx_capture_open,
1232         .close =        snd_via82xx_pcm_close,
1233         .ioctl =        snd_pcm_lib_ioctl,
1234         .hw_params =    snd_via82xx_hw_params,
1235         .hw_free =      snd_via82xx_hw_free,
1236         .prepare =      snd_via8233_capture_prepare,
1237         .trigger =      snd_via82xx_pcm_trigger,
1238         .pointer =      snd_via8233_pcm_pointer,
1239         .page =         snd_pcm_sgbuf_ops_page,
1240 };
1241
1242
1243 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
1244 {
1245         chip->devs[idx].reg_offset = reg_offset;
1246         chip->devs[idx].direction = direction;
1247         chip->devs[idx].port = chip->port + reg_offset;
1248 }
1249
1250 /*
1251  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1252  */
1253 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1254 {
1255         snd_pcm_t *pcm;
1256         int i, err;
1257
1258         chip->playback_devno = 0;       /* x 4 */
1259         chip->multi_devno = 4;          /* x 1 */
1260         chip->capture_devno = 5;        /* x 2 */
1261         chip->num_devs = 7;
1262         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1263
1264         /* PCM #0:  4 DSX playbacks and 1 capture */
1265         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1266         if (err < 0)
1267                 return err;
1268         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1269         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1270         pcm->private_data = chip;
1271         strcpy(pcm->name, chip->card->shortname);
1272         chip->pcms[0] = pcm;
1273         /* set up playbacks */
1274         for (i = 0; i < 4; i++)
1275                 init_viadev(chip, i, 0x10 * i, 0);
1276         /* capture */
1277         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1278
1279         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1280                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1281                 return err;
1282
1283         /* PCM #1:  multi-channel playback and 2nd capture */
1284         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1285         if (err < 0)
1286                 return err;
1287         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1288         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1289         pcm->private_data = chip;
1290         strcpy(pcm->name, chip->card->shortname);
1291         chip->pcms[1] = pcm;
1292         /* set up playback */
1293         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1294         /* set up capture */
1295         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 1);
1296
1297         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1298                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1299                 return err;
1300
1301         return 0;
1302 }
1303
1304 /*
1305  * create pcm instances for VIA8233A
1306  */
1307 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1308 {
1309         snd_pcm_t *pcm;
1310         int err;
1311
1312         chip->multi_devno = 0;
1313         chip->playback_devno = 1;
1314         chip->capture_devno = 2;
1315         chip->num_devs = 3;
1316         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1317
1318         /* PCM #0:  multi-channel playback and capture */
1319         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1320         if (err < 0)
1321                 return err;
1322         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1323         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1324         pcm->private_data = chip;
1325         strcpy(pcm->name, chip->card->shortname);
1326         chip->pcms[0] = pcm;
1327         /* set up playback */
1328         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1329         /* capture */
1330         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1331
1332         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1333                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1334                 return err;
1335
1336         /* SPDIF supported? */
1337         if (! ac97_can_spdif(chip->ac97))
1338                 return 0;
1339
1340         /* PCM #1:  DXS3 playback (for spdif) */
1341         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1342         if (err < 0)
1343                 return err;
1344         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1345         pcm->private_data = chip;
1346         strcpy(pcm->name, chip->card->shortname);
1347         chip->pcms[1] = pcm;
1348         /* set up playback */
1349         init_viadev(chip, chip->playback_devno, 0x30, 0);
1350
1351         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1352                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1353                 return err;
1354
1355         return 0;
1356 }
1357
1358 /*
1359  * create a pcm instance for via686a/b
1360  */
1361 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1362 {
1363         snd_pcm_t *pcm;
1364         int err;
1365
1366         chip->playback_devno = 0;
1367         chip->capture_devno = 1;
1368         chip->num_devs = 2;
1369         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1370
1371         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1372         if (err < 0)
1373                 return err;
1374         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1375         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1376         pcm->private_data = chip;
1377         strcpy(pcm->name, chip->card->shortname);
1378         chip->pcms[0] = pcm;
1379         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0);
1380         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 1);
1381
1382         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1383                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1384                 return err;
1385
1386         return 0;
1387 }
1388
1389
1390 /*
1391  *  Mixer part
1392  */
1393
1394 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1395 {
1396         /* formerly they were "Line" and "Mic", but it looks like that they
1397          * have nothing to do with the actual physical connections...
1398          */
1399         static char *texts[2] = {
1400                 "Input1", "Input2"
1401         };
1402         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1403         uinfo->count = 1;
1404         uinfo->value.enumerated.items = 2;
1405         if (uinfo->value.enumerated.item >= 2)
1406                 uinfo->value.enumerated.item = 1;
1407         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1408         return 0;
1409 }
1410
1411 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1412 {
1413         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1414         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1415         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1416         return 0;
1417 }
1418
1419 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1420 {
1421         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1422         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1423         u8 val, oval;
1424
1425         spin_lock_irq(&chip->reg_lock);
1426         oval = inb(port);
1427         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1428         if (ucontrol->value.enumerated.item[0])
1429                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1430         if (val != oval)
1431                 outb(val, port);
1432         spin_unlock_irq(&chip->reg_lock);
1433         return val != oval;
1434 }
1435
1436 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1437         .name = "Input Source Select",
1438         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1439         .info = snd_via8233_capture_source_info,
1440         .get = snd_via8233_capture_source_get,
1441         .put = snd_via8233_capture_source_put,
1442 };
1443
1444 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1445 {
1446         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1447         uinfo->count = 1;
1448         uinfo->value.integer.min = 0;
1449         uinfo->value.integer.max = 1;
1450         return 0;
1451 }
1452
1453 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1454 {
1455         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1456         u8 val;
1457
1458         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1459         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1460         return 0;
1461 }
1462
1463 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1464 {
1465         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1466         u8 val, oval;
1467
1468         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1469         val = oval & ~VIA8233_SPDIF_DX3;
1470         if (ucontrol->value.integer.value[0])
1471                 val |= VIA8233_SPDIF_DX3;
1472         /* save the spdif flag for rate filtering */
1473         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1474         if (val != oval) {
1475                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1476                 return 1;
1477         }
1478         return 0;
1479 }
1480
1481 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1482         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1483         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1484         .info = snd_via8233_dxs3_spdif_info,
1485         .get = snd_via8233_dxs3_spdif_get,
1486         .put = snd_via8233_dxs3_spdif_put,
1487 };
1488
1489 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1490 {
1491         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1492         uinfo->count = 2;
1493         uinfo->value.integer.min = 0;
1494         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1495         return 0;
1496 }
1497
1498 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1499 {
1500         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1501         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[0];
1502         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[1];
1503         return 0;
1504 }
1505
1506 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1507 {
1508         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1509         unsigned int idx;
1510         unsigned char val;
1511         int i, change = 0;
1512
1513         for (i = 0; i < 2; i++) {
1514                 val = ucontrol->value.integer.value[i];
1515                 if (val > VIA_DXS_MAX_VOLUME)
1516                         val = VIA_DXS_MAX_VOLUME;
1517                 val = VIA_DXS_MAX_VOLUME - val;
1518                 if (val != chip->playback_volume[i]) {
1519                         change = 1;
1520                         chip->playback_volume[i] = val;
1521                         for (idx = 0; idx < 4; idx++) {
1522                                 unsigned long port = chip->port + 0x10 * idx;
1523                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1524                         }
1525                 }
1526         }
1527         return change;
1528 }
1529
1530 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1531         .name = "PCM Playback Volume",
1532         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1533         .info = snd_via8233_dxs_volume_info,
1534         .get = snd_via8233_dxs_volume_get,
1535         .put = snd_via8233_dxs_volume_put,
1536 };
1537
1538 /*
1539  */
1540
1541 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1542 {
1543         via82xx_t *chip = bus->private_data;
1544         chip->ac97_bus = NULL;
1545 }
1546
1547 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1548 {
1549         via82xx_t *chip = ac97->private_data;
1550         chip->ac97 = NULL;
1551 }
1552
1553 static struct ac97_quirk ac97_quirks[] = {
1554         {
1555                 .subvendor = 0x1106,
1556                 .subdevice = 0x4161,
1557                 .codec_id = 0x56494161, /* VT1612A */
1558                 .name = "Soltek SL-75DRV5",
1559                 .type = AC97_TUNE_NONE
1560         },
1561         {       /* FIXME: which codec? */
1562                 .subvendor = 0x1106,
1563                 .subdevice = 0x4161,
1564                 .name = "ASRock K7VT2",
1565                 .type = AC97_TUNE_HP_ONLY
1566         },
1567         {
1568                 .subvendor = 0x1019,
1569                 .subdevice = 0x0a81,
1570                 .name = "ECS K7VTA3",
1571                 .type = AC97_TUNE_HP_ONLY
1572         },
1573         {
1574                 .subvendor = 0x1019,
1575                 .subdevice = 0x0a85,
1576                 .name = "ECS L7VMM2",
1577                 .type = AC97_TUNE_HP_ONLY
1578         },
1579         {
1580                 .subvendor = 0x1849,
1581                 .subdevice = 0x3059,
1582                 .name = "ASRock K7VM2",
1583                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1584         },
1585         {
1586                 .subvendor = 0x14cd,
1587                 .subdevice = 0x7002,
1588                 .name = "Unknown",
1589                 .type = AC97_TUNE_ALC_JACK
1590         },
1591         {
1592                 .subvendor = 0x1071,
1593                 .subdevice = 0x8590,
1594                 .name = "Mitac Mobo",
1595                 .type = AC97_TUNE_ALC_JACK
1596         },
1597         {
1598                 .subvendor = 0x161f,
1599                 .subdevice = 0x202b,
1600                 .name = "Arima Notebook",
1601                 .type = AC97_TUNE_HP_ONLY,
1602         },
1603         { } /* terminator */
1604 };
1605
1606 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_override)
1607 {
1608         ac97_template_t ac97;
1609         int err;
1610         static ac97_bus_ops_t ops = {
1611                 .write = snd_via82xx_codec_write,
1612                 .read = snd_via82xx_codec_read,
1613                 .wait = snd_via82xx_codec_wait,
1614         };
1615
1616         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1617                 return err;
1618         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1619         chip->ac97_bus->clock = chip->ac97_clock;
1620
1621         memset(&ac97, 0, sizeof(ac97));
1622         ac97.private_data = chip;
1623         ac97.private_free = snd_via82xx_mixer_free_ac97;
1624         ac97.pci = chip->pci;
1625         ac97.scaps = AC97_SCAP_SKIP_MODEM;
1626         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1627                 return err;
1628
1629         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1630
1631         if (chip->chip_type != TYPE_VIA686) {
1632                 /* use slot 10/11 */
1633                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1634         }
1635
1636         return 0;
1637 }
1638
1639 #ifdef SUPPORT_JOYSTICK
1640 #define JOYSTICK_ADDR   0x200
1641 static int __devinit snd_via686_create_gameport(via82xx_t *chip, unsigned char *legacy)
1642 {
1643         struct gameport *gp;
1644         struct resource *r;
1645
1646         if (!joystick)
1647                 return -ENODEV;
1648
1649         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1650         if (!r) {
1651                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n", JOYSTICK_ADDR);
1652                 return -EBUSY;
1653         }
1654
1655         chip->gameport = gp = gameport_allocate_port();
1656         if (!gp) {
1657                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1658                 release_and_free_resource(r);
1659                 return -ENOMEM;
1660         }
1661
1662         gameport_set_name(gp, "VIA686 Gameport");
1663         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1664         gameport_set_dev_parent(gp, &chip->pci->dev);
1665         gp->io = JOYSTICK_ADDR;
1666         gameport_set_port_data(gp, r);
1667
1668         /* Enable legacy joystick port */
1669         *legacy |= VIA_FUNC_ENABLE_GAME;
1670         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1671
1672         gameport_register_port(chip->gameport);
1673
1674         return 0;
1675 }
1676
1677 static void snd_via686_free_gameport(via82xx_t *chip)
1678 {
1679         if (chip->gameport) {
1680                 struct resource *r = gameport_get_port_data(chip->gameport);
1681
1682                 gameport_unregister_port(chip->gameport);
1683                 chip->gameport = NULL;
1684                 release_and_free_resource(r);
1685         }
1686 }
1687 #else
1688 static inline int snd_via686_create_gameport(via82xx_t *chip, unsigned char *legacy)
1689 {
1690         return -ENOSYS;
1691 }
1692 static inline void snd_via686_free_gameport(via82xx_t *chip) { }
1693 #endif
1694
1695
1696 /*
1697  *
1698  */
1699
1700 static int __devinit snd_via8233_init_misc(via82xx_t *chip)
1701 {
1702         int i, err, caps;
1703         unsigned char val;
1704
1705         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1706         for (i = 0; i < caps; i++) {
1707                 snd_via8233_capture_source.index = i;
1708                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1709                 if (err < 0)
1710                         return err;
1711         }
1712         if (ac97_can_spdif(chip->ac97)) {
1713                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1714                 if (err < 0)
1715                         return err;
1716         }
1717         if (chip->chip_type != TYPE_VIA8233A) {
1718                 /* when no h/w PCM volume control is found, use DXS volume control
1719                  * as the PCM vol control
1720                  */
1721                 snd_ctl_elem_id_t sid;
1722                 memset(&sid, 0, sizeof(sid));
1723                 strcpy(sid.name, "PCM Playback Volume");
1724                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1725                 if (! snd_ctl_find_id(chip->card, &sid)) {
1726                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1727                         if (err < 0)
1728                                 return err;
1729                 }
1730         }
1731
1732         /* select spdif data slot 10/11 */
1733         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1734         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1735         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1736         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1737
1738         return 0;
1739 }
1740
1741 static int __devinit snd_via686_init_misc(via82xx_t *chip)
1742 {
1743         unsigned char legacy, legacy_cfg;
1744         int rev_h = 0;
1745
1746         legacy = chip->old_legacy;
1747         legacy_cfg = chip->old_legacy_cfg;
1748         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1749         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1750         if (chip->revision >= VIA_REV_686_H) {
1751                 rev_h = 1;
1752                 if (mpu_port >= 0x200) {        /* force MIDI */
1753                         mpu_port &= 0xfffc;
1754                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1755 #ifdef CONFIG_PM
1756                         chip->mpu_port_saved = mpu_port;
1757 #endif
1758                 } else {
1759                         mpu_port = pci_resource_start(chip->pci, 2);
1760                 }
1761         } else {
1762                 switch (mpu_port) {     /* force MIDI */
1763                 case 0x300:
1764                 case 0x310:
1765                 case 0x320:
1766                 case 0x330:
1767                         legacy_cfg &= ~(3 << 2);
1768                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1769                         break;
1770                 default:                        /* no, use BIOS settings */
1771                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1772                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1773                         break;
1774                 }
1775         }
1776         if (mpu_port >= 0x200 &&
1777             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1778             != NULL) {
1779                 if (rev_h)
1780                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1781                 legacy |= VIA_FUNC_ENABLE_MIDI;
1782         } else {
1783                 if (rev_h)
1784                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1785                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1786                 mpu_port = 0;
1787         }
1788
1789         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1790         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1791         if (chip->mpu_res) {
1792                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1793                                         mpu_port, 1,
1794                                         chip->irq, 0, &chip->rmidi) < 0) {
1795                         printk(KERN_WARNING "unable to initialize MPU-401"
1796                                " at 0x%lx, skipping\n", mpu_port);
1797                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1798                 } else {
1799                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1800                 }
1801                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1802         }
1803
1804         snd_via686_create_gameport(chip, &legacy);
1805
1806 #ifdef CONFIG_PM
1807         chip->legacy_saved = legacy;
1808         chip->legacy_cfg_saved = legacy_cfg;
1809 #endif
1810
1811         return 0;
1812 }
1813
1814
1815 /*
1816  * proc interface
1817  */
1818 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1819 {
1820         via82xx_t *chip = entry->private_data;
1821         int i;
1822
1823         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1824         for (i = 0; i < 0xa0; i += 4) {
1825                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1826         }
1827 }
1828
1829 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1830 {
1831         snd_info_entry_t *entry;
1832
1833         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1834                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1835 }
1836
1837 /*
1838  *
1839  */
1840
1841 static int snd_via82xx_chip_init(via82xx_t *chip)
1842 {
1843         unsigned int val;
1844         unsigned long end_time;
1845         unsigned char pval;
1846
1847 #if 0 /* broken on K7M? */
1848         if (chip->chip_type == TYPE_VIA686)
1849                 /* disable all legacy ports */
1850                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1851 #endif
1852         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1853         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1854                 /* deassert ACLink reset, force SYNC */
1855                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1856                                       VIA_ACLINK_CTRL_ENABLE |
1857                                       VIA_ACLINK_CTRL_RESET |
1858                                       VIA_ACLINK_CTRL_SYNC);
1859                 udelay(100);
1860 #if 1 /* FIXME: should we do full reset here for all chip models? */
1861                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
1862                 udelay(100);
1863 #else
1864                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
1865                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1866                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
1867                 udelay(2);
1868 #endif
1869                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1870                 /* note - FM data out has trouble with non VRA codecs !! */
1871                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1872                 udelay(100);
1873         }
1874
1875         /* Make sure VRA is enabled, in case we didn't do a
1876          * complete codec reset, above */
1877         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
1878         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
1879                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1880                 /* note - FM data out has trouble with non VRA codecs !! */
1881                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1882                 udelay(100);
1883         }
1884
1885         /* wait until codec ready */
1886         end_time = jiffies + msecs_to_jiffies(750);
1887         do {
1888                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1889                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
1890                         break;
1891                 set_current_state(TASK_UNINTERRUPTIBLE);
1892                 schedule_timeout(1);
1893         } while (time_before(jiffies, end_time));
1894
1895         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1896                 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
1897
1898 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
1899         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1900                                  VIA_REG_AC97_SECONDARY_VALID |
1901                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1902         end_time = jiffies + msecs_to_jiffies(750);
1903         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1904                                  VIA_REG_AC97_SECONDARY_VALID |
1905                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1906         do {
1907                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1908                         chip->ac97_secondary = 1;
1909                         goto __ac97_ok2;
1910                 }
1911                 set_current_state(TASK_INTERRUPTIBLE);
1912                 schedule_timeout(1);
1913         } while (time_before(jiffies, end_time));
1914         /* This is ok, the most of motherboards have only one codec */
1915
1916       __ac97_ok2:
1917 #endif
1918
1919         if (chip->chip_type == TYPE_VIA686) {
1920                 /* route FM trap to IRQ, disable FM trap */
1921                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1922                 /* disable all GPI interrupts */
1923                 outl(0, VIAREG(chip, GPI_INTR));
1924         }
1925
1926         if (chip->chip_type != TYPE_VIA686) {
1927                 /* Workaround for Award BIOS bug:
1928                  * DXS channels don't work properly with VRA if MC97 is disabled.
1929                  */
1930                 struct pci_dev *pci;
1931                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
1932                 if (pci) {
1933                         unsigned char data;
1934                         pci_read_config_byte(pci, 0x44, &data);
1935                         pci_write_config_byte(pci, 0x44, data | 0x40);
1936                         pci_dev_put(pci);
1937                 }
1938         }
1939
1940         if (chip->chip_type != TYPE_VIA8233A) {
1941                 int i, idx;
1942                 for (idx = 0; idx < 4; idx++) {
1943                         unsigned long port = chip->port + 0x10 * idx;
1944                         for (i = 0; i < 2; i++)
1945                                 outb(chip->playback_volume[i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1946                 }
1947         }
1948
1949         return 0;
1950 }
1951
1952 #ifdef CONFIG_PM
1953 /*
1954  * power management
1955  */
1956 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
1957 {
1958         via82xx_t *chip = card->pm_private_data;
1959         int i;
1960
1961         for (i = 0; i < 2; i++)
1962                 if (chip->pcms[i])
1963                         snd_pcm_suspend_all(chip->pcms[i]);
1964         for (i = 0; i < chip->num_devs; i++)
1965                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1966         synchronize_irq(chip->irq);
1967         snd_ac97_suspend(chip->ac97);
1968
1969         /* save misc values */
1970         if (chip->chip_type != TYPE_VIA686) {
1971                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
1972                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
1973                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1974         }
1975
1976         pci_set_power_state(chip->pci, 3);
1977         pci_disable_device(chip->pci);
1978         return 0;
1979 }
1980
1981 static int snd_via82xx_resume(snd_card_t *card)
1982 {
1983         via82xx_t *chip = card->pm_private_data;
1984         int i;
1985
1986         pci_enable_device(chip->pci);
1987         pci_set_power_state(chip->pci, 0);
1988
1989         snd_via82xx_chip_init(chip);
1990
1991         if (chip->chip_type == TYPE_VIA686) {
1992                 if (chip->mpu_port_saved)
1993                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
1994                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
1995                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
1996         } else {
1997                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
1998                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
1999                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2000         }
2001
2002         snd_ac97_resume(chip->ac97);
2003
2004         for (i = 0; i < chip->num_devs; i++)
2005                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2006
2007         return 0;
2008 }
2009 #endif /* CONFIG_PM */
2010
2011 static int snd_via82xx_free(via82xx_t *chip)
2012 {
2013         unsigned int i;
2014
2015         if (chip->irq < 0)
2016                 goto __end_hw;
2017         /* disable interrupts */
2018         for (i = 0; i < chip->num_devs; i++)
2019                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2020         synchronize_irq(chip->irq);
2021       __end_hw:
2022         if (chip->irq >= 0)
2023                 free_irq(chip->irq, (void *)chip);
2024         release_and_free_resource(chip->mpu_res);
2025         pci_release_regions(chip->pci);
2026
2027         if (chip->chip_type == TYPE_VIA686) {
2028                 snd_via686_free_gameport(chip);
2029                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2030                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2031         }
2032         pci_disable_device(chip->pci);
2033         kfree(chip);
2034         return 0;
2035 }
2036
2037 static int snd_via82xx_dev_free(snd_device_t *device)
2038 {
2039         via82xx_t *chip = device->device_data;
2040         return snd_via82xx_free(chip);
2041 }
2042
2043 static int __devinit snd_via82xx_create(snd_card_t * card,
2044                                         struct pci_dev *pci,
2045                                         int chip_type,
2046                                         int revision,
2047                                         unsigned int ac97_clock,
2048                                         via82xx_t ** r_via)
2049 {
2050         via82xx_t *chip;
2051         int err;
2052         static snd_device_ops_t ops = {
2053                 .dev_free =     snd_via82xx_dev_free,
2054         };
2055
2056         if ((err = pci_enable_device(pci)) < 0)
2057                 return err;
2058
2059         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2060                 pci_disable_device(pci);
2061                 return -ENOMEM;
2062         }
2063
2064         chip->chip_type = chip_type;
2065         chip->revision = revision;
2066
2067         spin_lock_init(&chip->reg_lock);
2068         spin_lock_init(&chip->rates[0].lock);
2069         spin_lock_init(&chip->rates[1].lock);
2070         chip->card = card;
2071         chip->pci = pci;
2072         chip->irq = -1;
2073
2074         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2075         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2076         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2077                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2078
2079         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2080                 kfree(chip);
2081                 pci_disable_device(pci);
2082                 return err;
2083         }
2084         chip->port = pci_resource_start(pci, 0);
2085         if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
2086                         card->driver, (void *)chip)) {
2087                 snd_printk("unable to grab IRQ %d\n", pci->irq);
2088                 snd_via82xx_free(chip);
2089                 return -EBUSY;
2090         }
2091         chip->irq = pci->irq;
2092         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2093                 chip->ac97_clock = ac97_clock;
2094         synchronize_irq(chip->irq);
2095
2096         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2097                 snd_via82xx_free(chip);
2098                 return err;
2099         }
2100
2101         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2102                 snd_via82xx_free(chip);
2103                 return err;
2104         }
2105
2106         /* The 8233 ac97 controller does not implement the master bit
2107          * in the pci command register. IMHO this is a violation of the PCI spec.
2108          * We call pci_set_master here because it does not hurt. */
2109         pci_set_master(pci);
2110
2111         snd_card_set_dev(card, &pci->dev);
2112
2113         *r_via = chip;
2114         return 0;
2115 }
2116
2117 struct via823x_info {
2118         int revision;
2119         char *name;
2120         int type;
2121 };
2122 static struct via823x_info via823x_cards[] __devinitdata = {
2123         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2124         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2125         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2126         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2127         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2128         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2129 };
2130
2131 /*
2132  * auto detection of DXS channel supports.
2133  */
2134 struct dxs_whitelist {
2135         unsigned short subvendor;
2136         unsigned short subdevice;
2137         unsigned short mask;
2138         short action;   /* new dxs_support value */
2139 };
2140
2141 static int __devinit check_dxs_list(struct pci_dev *pci)
2142 {
2143         static struct dxs_whitelist whitelist[] = {
2144                 { .subvendor = 0x1005, .subdevice = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2145                 { .subvendor = 0x1019, .subdevice = 0x0996, .action = VIA_DXS_48K },
2146                 { .subvendor = 0x1019, .subdevice = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2147                 { .subvendor = 0x1019, .subdevice = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2148                 { .subvendor = 0x1019, .subdevice = 0xa101, .action = VIA_DXS_SRC },
2149                 { .subvendor = 0x1025, .subdevice = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2150                 { .subvendor = 0x1025, .subdevice = 0x0046, .action = VIA_DXS_SRC }, /* Acer Aspire 1524 WLMi */
2151                 { .subvendor = 0x1043, .subdevice = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2152                 { .subvendor = 0x1043, .subdevice = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2153                 { .subvendor = 0x1043, .subdevice = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2154                 { .subvendor = 0x1043, .subdevice = 0x810d, .action = VIA_DXS_SRC }, /* ASUS */
2155                 { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC    }, /* ASUS A8V Deluxe */
2156                 { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2157                 { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */
2158                 { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2159                 { .subvendor = 0x1106, .subdevice = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2160                 { .subvendor = 0x1106, .subdevice = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2161                 { .subvendor = 0x1106, .subdevice = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2162                 { .subvendor = 0x1106, .subdevice = 0xc001, .action = VIA_DXS_SRC }, /* Insight P4-ITX */
2163                 { .subvendor = 0x1297, .subdevice = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2164                 { .subvendor = 0x1297, .subdevice = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2165                 { .subvendor = 0x1458, .subdevice = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2166                 { .subvendor = 0x1462, .subdevice = 0x0080, .action = VIA_DXS_SRC }, /* MSI K8T Neo-FIS2R */
2167                 { .subvendor = 0x1462, .subdevice = 0x0430, .action = VIA_DXS_SRC }, /* MSI 7142 (K8MM-V) */
2168                 { .subvendor = 0x1462, .subdevice = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2169                 { .subvendor = 0x1462, .subdevice = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2170                 { .subvendor = 0x1462, .subdevice = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2171                 { .subvendor = 0x1462, .subdevice = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2172                 { .subvendor = 0x1462, .subdevice = 0x7142, .action = VIA_DXS_ENABLE }, /* MSI K8MM-V */
2173                 { .subvendor = 0x147b, .subdevice = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2174                 { .subvendor = 0x147b, .subdevice = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2175                 { .subvendor = 0x147b, .subdevice = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2176                 { .subvendor = 0x147b, .subdevice = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2177                 { .subvendor = 0x14ff, .subdevice = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2178                 { .subvendor = 0x14ff, .subdevice = 0x0408, .action = VIA_DXS_SRC }, /* Twinhead laptop */
2179                 { .subvendor = 0x1558, .subdevice = 0x4701, .action = VIA_DXS_SRC }, /* Clevo D470 */
2180                 { .subvendor = 0x1584, .subdevice = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2181                 { .subvendor = 0x1584, .subdevice = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2182                 { .subvendor = 0x161f, .subdevice = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2183                 { .subvendor = 0x161f, .subdevice = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2184                 { .subvendor = 0x1631, .subdevice = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2185                 { .subvendor = 0x1695, .subdevice = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2186                 { .subvendor = 0x1849, .subdevice = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2187                 { .subvendor = 0x1919, .subdevice = 0x200a, .action = VIA_DXS_NO_VRA }, /* Soltek SL-K8Tpro-939 */
2188                 { .subvendor = 0x4005, .subdevice = 0x4710, .action = VIA_DXS_SRC },    /* MSI K7T266 Pro2 (MS-6380 V2.0) BIOS 3.7 */
2189                 { } /* terminator */
2190         };
2191         struct dxs_whitelist *w;
2192         unsigned short subsystem_vendor;
2193         unsigned short subsystem_device;
2194
2195         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2196         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2197
2198         for (w = whitelist; w->subvendor; w++) {
2199                 if (w->subvendor != subsystem_vendor)
2200                         continue;
2201                 if (w->mask) {
2202                         if ((w->mask & subsystem_device) == w->subdevice)
2203                                 return w->action;
2204                 } else {
2205                         if (subsystem_device == w->subdevice)
2206                                 return w->action;
2207                 }
2208         }
2209
2210         /*
2211          * not detected, try 48k rate only to be sure.
2212          */
2213         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2214         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2215         printk(KERN_INFO "         and report if it works on your machine.\n");
2216         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2217         return VIA_DXS_48K;
2218 };
2219
2220 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2221                                        const struct pci_device_id *pci_id)
2222 {
2223         snd_card_t *card;
2224         via82xx_t *chip;
2225         unsigned char revision;
2226         int chip_type = 0, card_type;
2227         unsigned int i;
2228         int err;
2229
2230         card = snd_card_new(index, id, THIS_MODULE, 0);
2231         if (card == NULL)
2232                 return -ENOMEM;
2233
2234         card_type = pci_id->driver_data;
2235         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2236         switch (card_type) {
2237         case TYPE_CARD_VIA686:
2238                 strcpy(card->driver, "VIA686A");
2239                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2240                 chip_type = TYPE_VIA686;
2241                 break;
2242         case TYPE_CARD_VIA8233:
2243                 chip_type = TYPE_VIA8233;
2244                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2245                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2246                         if (revision == via823x_cards[i].revision) {
2247                                 chip_type = via823x_cards[i].type;
2248                                 strcpy(card->shortname, via823x_cards[i].name);
2249                                 break;
2250                         }
2251                 }
2252                 if (chip_type != TYPE_VIA8233A) {
2253                         if (dxs_support == VIA_DXS_AUTO)
2254                                 dxs_support = check_dxs_list(pci);
2255                         /* force to use VIA8233 or 8233A model according to
2256                          * dxs_support module option
2257                          */
2258                         if (dxs_support == VIA_DXS_DISABLE)
2259                                 chip_type = TYPE_VIA8233A;
2260                         else
2261                                 chip_type = TYPE_VIA8233;
2262                 }
2263                 if (chip_type == TYPE_VIA8233A)
2264                         strcpy(card->driver, "VIA8233A");
2265                 else if (revision >= VIA_REV_8237)
2266                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2267                 else
2268                         strcpy(card->driver, "VIA8233");
2269                 break;
2270         default:
2271                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2272                 err = -EINVAL;
2273                 goto __error;
2274         }
2275
2276         if ((err = snd_via82xx_create(card, pci, chip_type, revision,
2277                                       ac97_clock, &chip)) < 0)
2278                 goto __error;
2279         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2280                 goto __error;
2281
2282         if (chip_type == TYPE_VIA686) {
2283                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2284                     (err = snd_via686_init_misc(chip)) < 0)
2285                         goto __error;
2286         } else {
2287                 if (chip_type == TYPE_VIA8233A) {
2288                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2289                                 goto __error;
2290                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2291                 } else {
2292                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2293                                 goto __error;
2294                         if (dxs_support == VIA_DXS_48K)
2295                                 chip->dxs_fixed = 1;
2296                         else if (dxs_support == VIA_DXS_NO_VRA)
2297                                 chip->no_vra = 1;
2298                         else if (dxs_support == VIA_DXS_SRC) {
2299                                 chip->no_vra = 1;
2300                                 chip->dxs_src = 1;
2301                         }
2302                 }
2303                 if ((err = snd_via8233_init_misc(chip)) < 0)
2304                         goto __error;
2305         }
2306
2307         snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
2308
2309         /* disable interrupts */
2310         for (i = 0; i < chip->num_devs; i++)
2311                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2312
2313         snprintf(card->longname, sizeof(card->longname),
2314                  "%s with %s at %#lx, irq %d", card->shortname,
2315                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2316
2317         snd_via82xx_proc_init(chip);
2318
2319         if ((err = snd_card_register(card)) < 0) {
2320                 snd_card_free(card);
2321                 return err;
2322         }
2323         pci_set_drvdata(pci, card);
2324         return 0;
2325
2326  __error:
2327         snd_card_free(card);
2328         return err;
2329 }
2330
2331 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2332 {
2333         snd_card_free(pci_get_drvdata(pci));
2334         pci_set_drvdata(pci, NULL);
2335 }
2336
2337 static struct pci_driver driver = {
2338         .name = "VIA 82xx Audio",
2339         .owner = THIS_MODULE,
2340         .id_table = snd_via82xx_ids,
2341         .probe = snd_via82xx_probe,
2342         .remove = __devexit_p(snd_via82xx_remove),
2343         SND_PCI_PM_CALLBACKS
2344 };
2345
2346 static int __init alsa_card_via82xx_init(void)
2347 {
2348         return pci_register_driver(&driver);
2349 }
2350
2351 static void __exit alsa_card_via82xx_exit(void)
2352 {
2353         pci_unregister_driver(&driver);
2354 }
2355
2356 module_init(alsa_card_via82xx_init)
2357 module_exit(alsa_card_via82xx_exit)