git.oblomov.eu Git - linux-2.6/blob - sound/pci/via82xx.c

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  */
  45
  46 #include <sound/driver.h>
  47 #include <asm/io.h>
  48 #include <linux/delay.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/init.h>
  51 #include <linux/pci.h>
  52 #include <linux/slab.h>
  53 #include <linux/gameport.h>
  54 #include <linux/moduleparam.h>
  55 #include <sound/core.h>
  56 #include <sound/pcm.h>
  57 #include <sound/pcm_params.h>
  58 #include <sound/info.h>
  59 #include <sound/ac97_codec.h>
  60 #include <sound/mpu401.h>
  61 #include <sound/initval.h>
  62
  63 #if 0
  64 #define POINTER_DEBUG
  65 #endif
  66
  67 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  68 MODULE_DESCRIPTION("VIA VT82xx audio");
  69 MODULE_LICENSE("GPL");
  70 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  71
  72 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  73 #define SUPPORT_JOYSTICK 1
  74 #endif
  75
  76 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  77 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  78 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  79 static long mpu_port[SNDRV_CARDS];
  80 #ifdef SUPPORT_JOYSTICK
  81 static int joystick[SNDRV_CARDS];
  82 #endif
  83 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
  84 static char *ac97_quirk[SNDRV_CARDS];
  85 static int dxs_support[SNDRV_CARDS];
  86
  87 module_param_array(index, int, NULL, 0444);
  88 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  89 module_param_array(id, charp, NULL, 0444);
  90 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  91 module_param_array(enable, bool, NULL, 0444);
  92 MODULE_PARM_DESC(enable, "Enable audio part of VIA 82xx bridge.");
  93 module_param_array(mpu_port, long, NULL, 0444);
  94 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  95 #ifdef SUPPORT_JOYSTICK
  96 module_param_array(joystick, bool, NULL, 0444);
  97 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  98 #endif
  99 module_param_array(ac97_clock, int, NULL, 0444);
 100 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 101 module_param_array(ac97_quirk, charp, NULL, 0444);
 102 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 103 module_param_array(dxs_support, int, NULL, 0444);
 104 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 105
 106
 107 /* pci ids */
 108 #ifndef PCI_DEVICE_ID_VIA_82C686_5
 109 #define PCI_DEVICE_ID_VIA_82C686_5      0x3058
 110 #endif
 111 #ifndef PCI_DEVICE_ID_VIA_8233_5
 112 #define PCI_DEVICE_ID_VIA_8233_5        0x3059
 113 #endif
 114
 115 /* revision numbers for via686 */
 116 #define VIA_REV_686_A           0x10
 117 #define VIA_REV_686_B           0x11
 118 #define VIA_REV_686_C           0x12
 119 #define VIA_REV_686_D           0x13
 120 #define VIA_REV_686_E           0x14
 121 #define VIA_REV_686_H           0x20
 122
 123 /* revision numbers for via8233 */
 124 #define VIA_REV_PRE_8233        0x10    /* not in market */
 125 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 126 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 127 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 128 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 129 #define VIA_REV_8237            0x60
 130
 131 /*
 132  *  Direct registers
 133  */
 134
 135 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 136 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 137
 138 /* common offsets */
 139 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 140 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 141 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 142 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 143 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 144 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 145 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 146 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 147 #define   VIA_REG_CTRL_START            0x80    /* WO */
 148 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 149 #define   VIA_REG_CTRL_AUTOSTART        0x20
 150 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 151 #define   VIA_REG_CTRL_INT_STOP         0x04
 152 #define   VIA_REG_CTRL_INT_EOL          0x02
 153 #define   VIA_REG_CTRL_INT_FLAG         0x01
 154 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 155 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 156 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 157 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 158 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 159 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 160 #define   VIA_REG_TYPE_INT_LLINE        0x00
 161 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 162 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 163 #define   VIA_REG_TYPE_INT_MASK         0x0c
 164 #define   VIA_REG_TYPE_INT_EOL          0x02
 165 #define   VIA_REG_TYPE_INT_FLAG         0x01
 166 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 167 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 168 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 169 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 170 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 171 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 172 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 173
 174 #define DEFINE_VIA_REGSET(name,val) \
 175 enum {\
 176         VIA_REG_##name##_STATUS         = (val),\
 177         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 178         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 179         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 180         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 181         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 182         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 183 }
 184
 185 /* playback block */
 186 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 187 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 188 DEFINE_VIA_REGSET(FM, 0x20);
 189
 190 /* AC'97 */
 191 #define VIA_REG_AC97                    0x80    /* dword */
 192 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 193 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 194 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 195 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 196 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 197 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 198 #define   VIA_REG_AC97_BUSY             (1<<24)
 199 #define   VIA_REG_AC97_READ             (1<<23)
 200 #define   VIA_REG_AC97_CMD_SHIFT        16
 201 #define   VIA_REG_AC97_CMD_MASK         0x7e
 202 #define   VIA_REG_AC97_DATA_SHIFT       0
 203 #define   VIA_REG_AC97_DATA_MASK        0xffff
 204
 205 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 206 /* via686 */
 207 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 208 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 209 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 210 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 211 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 212 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 213 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 214 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 215 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 216 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 217 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 218 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 219 /* via8233 */
 220 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 221 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 222 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 223 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 224 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 225 #define   VIA8233_REG_SGD_CHAN_SDX      0
 226 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 227 #define   VIA8233_REG_SGD_CHAN_REC      6
 228 #define   VIA8233_REG_SGD_CHAN_REC1     7
 229
 230 #define VIA_REG_GPI_STATUS              0x88
 231 #define VIA_REG_GPI_INTR                0x8c
 232
 233 /* multi-channel and capture registers for via8233 */
 234 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 235 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 236
 237 /* via8233-specific registers */
 238 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 239 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 240 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 241 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 242 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 243 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 244 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 245 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 246
 247 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 248
 249 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 250 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 251 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 252 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 253
 254 #define VIA_TBL_BIT_FLAG        0x40000000
 255 #define VIA_TBL_BIT_EOL         0x80000000
 256
 257 /* pci space */
 258 #define VIA_ACLINK_STAT         0x40
 259 #define  VIA_ACLINK_C11_READY   0x20
 260 #define  VIA_ACLINK_C10_READY   0x10
 261 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 262 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 263 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 264 #define VIA_ACLINK_CTRL         0x41
 265 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 266 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 267 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 268 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 269 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 270 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 271 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 272 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 273 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 274                                  VIA_ACLINK_CTRL_RESET|\
 275                                  VIA_ACLINK_CTRL_PCM|\
 276                                  VIA_ACLINK_CTRL_VRA)
 277 #define VIA_FUNC_ENABLE         0x42
 278 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 279 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 280 #define  VIA_FUNC_RX2C_WRITE    0x20
 281 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 282 #define  VIA_FUNC_ENABLE_GAME   0x08
 283 #define  VIA_FUNC_ENABLE_FM     0x04
 284 #define  VIA_FUNC_ENABLE_MIDI   0x02
 285 #define  VIA_FUNC_ENABLE_SB     0x01
 286 #define VIA_PNP_CONTROL         0x43
 287 #define VIA_FM_NMI_CTRL         0x48
 288 #define VIA8233_VOLCHG_CTRL     0x48
 289 #define VIA8233_SPDIF_CTRL      0x49
 290 #define  VIA8233_SPDIF_DX3      0x08
 291 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 292 #define  VIA8233_SPDIF_SLOT_1011        0x00
 293 #define  VIA8233_SPDIF_SLOT_34          0x01
 294 #define  VIA8233_SPDIF_SLOT_78          0x02
 295 #define  VIA8233_SPDIF_SLOT_69          0x03
 296
 297 /*
 298  */
 299
 300 #define VIA_DXS_AUTO    0
 301 #define VIA_DXS_ENABLE  1
 302 #define VIA_DXS_DISABLE 2
 303 #define VIA_DXS_48K     3
 304 #define VIA_DXS_NO_VRA  4
 305 #define VIA_DXS_SRC     5
 306
 307
 308 /*
 309  */
 310
 311 typedef struct _snd_via82xx via82xx_t;
 312 typedef struct via_dev viadev_t;
 313
 314 /*
 315  * pcm stream
 316  */
 317
 318 struct snd_via_sg_table {
 319         unsigned int offset;
 320         unsigned int size;
 321 } ;
 322
 323 #define VIA_TABLE_SIZE  255
 324
 325 struct via_dev {
 326         unsigned int reg_offset;
 327         unsigned long port;
 328         int direction;  /* playback = 0, capture = 1 */
 329         snd_pcm_substream_t *substream;
 330         int running;
 331         unsigned int tbl_entries; /* # descriptors */
 332         struct snd_dma_buffer table;
 333         struct snd_via_sg_table *idx_table;
 334         /* for recovery from the unexpected pointer */
 335         unsigned int lastpos;
 336         unsigned int fragsize;
 337         unsigned int bufsize;
 338         unsigned int bufsize2;
 339 };
 340
 341
 342 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 343 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 344
 345 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 346
 347 struct via_rate_lock {
 348         spinlock_t lock;
 349         int rate;
 350         int used;
 351 };
 352
 353 struct _snd_via82xx {
 354         int irq;
 355
 356         unsigned long port;
 357         struct resource *mpu_res;
 358         int chip_type;
 359         unsigned char revision;
 360
 361         unsigned char old_legacy;
 362         unsigned char old_legacy_cfg;
 363 #ifdef CONFIG_PM
 364         unsigned char legacy_saved;
 365         unsigned char legacy_cfg_saved;
 366         unsigned char spdif_ctrl_saved;
 367         unsigned char capture_src_saved[2];
 368         unsigned int mpu_port_saved;
 369 #endif
 370
 371         unsigned char playback_volume[2]; /* for VIA8233/C/8235; default = 0 */
 372
 373         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 374
 375         struct pci_dev *pci;
 376         snd_card_t *card;
 377
 378         unsigned int num_devs;
 379         unsigned int playback_devno, multi_devno, capture_devno;
 380         viadev_t devs[VIA_MAX_DEVS];
 381         struct via_rate_lock rates[2]; /* playback and capture */
 382         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 383         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 384         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 385         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 386
 387         snd_pcm_t *pcms[2];
 388         snd_rawmidi_t *rmidi;
 389
 390         ac97_bus_t *ac97_bus;
 391         ac97_t *ac97;
 392         unsigned int ac97_clock;
 393         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 394
 395         spinlock_t reg_lock;
 396         snd_info_entry_t *proc_entry;
 397
 398 #ifdef SUPPORT_JOYSTICK
 399         struct gameport *gameport;
 400 #endif
 401 };
 402
 403 static struct pci_device_id snd_via82xx_ids[] = {
 404         { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },    /* 686A */
 405         { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },   /* VT8233 */
 406         { 0, }
 407 };
 408
 409 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 410
 411 /*
 412  */
 413
 414 /*
 415  * allocate and initialize the descriptor buffers
 416  * periods = number of periods
 417  * fragsize = period size in bytes
 418  */
 419 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 420                            struct pci_dev *pci,
 421                            unsigned int periods, unsigned int fragsize)
 422 {
 423         unsigned int i, idx, ofs, rest;
 424         via82xx_t *chip = snd_pcm_substream_chip(substream);
 425         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 426
 427         if (dev->table.area == NULL) {
 428                 /* the start of each lists must be aligned to 8 bytes,
 429                  * but the kernel pages are much bigger, so we don't care
 430                  */
 431                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 432                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 433                                         &dev->table) < 0)
 434                         return -ENOMEM;
 435         }
 436         if (! dev->idx_table) {
 437                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 438                 if (! dev->idx_table)
 439                         return -ENOMEM;
 440         }
 441
 442         /* fill the entries */
 443         idx = 0;
 444         ofs = 0;
 445         for (i = 0; i < periods; i++) {
 446                 rest = fragsize;
 447                 /* fill descriptors for a period.
 448                  * a period can be split to several descriptors if it's
 449                  * over page boundary.
 450                  */
 451                 do {
 452                         unsigned int r;
 453                         unsigned int flag;
 454
 455                         if (idx >= VIA_TABLE_SIZE) {
 456                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 457                                 return -EINVAL;
 458                         }
 459                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 460                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 461                         if (rest < r)
 462                                 r = rest;
 463                         rest -= r;
 464                         if (! rest) {
 465                                 if (i == periods - 1)
 466                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 467                                 else
 468                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 469                         } else
 470                                 flag = 0; /* period continues to the next */
 471                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 472                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 473                         dev->idx_table[idx].offset = ofs;
 474                         dev->idx_table[idx].size = r;
 475                         ofs += r;
 476                         idx++;
 477                 } while (rest > 0);
 478         }
 479         dev->tbl_entries = idx;
 480         dev->bufsize = periods * fragsize;
 481         dev->bufsize2 = dev->bufsize / 2;
 482         dev->fragsize = fragsize;
 483         return 0;
 484 }
 485
 486
 487 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 488                            struct pci_dev *pci)
 489 {
 490         if (dev->table.area) {
 491                 snd_dma_free_pages(&dev->table);
 492                 dev->table.area = NULL;
 493         }
 494         kfree(dev->idx_table);
 495         dev->idx_table = NULL;
 496         return 0;
 497 }
 498
 499 /*
 500  *  Basic I/O
 501  */
 502
 503 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
 504 {
 505         return inl(VIAREG(chip, AC97));
 506 }
 507
 508 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
 509 {
 510         outl(val, VIAREG(chip, AC97));
 511 }
 512
 513 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
 514 {
 515         unsigned int timeout = 1000;    /* 1ms */
 516         unsigned int val;
 517
 518         while (timeout-- > 0) {
 519                 udelay(1);
 520                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 521                         return val & 0xffff;
 522         }
 523         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
 524         return -EIO;
 525 }
 526
 527 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
 528 {
 529         unsigned int timeout = 1000;    /* 1ms */
 530         unsigned int val, val1;
 531         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 532                                          VIA_REG_AC97_SECONDARY_VALID;
 533
 534         while (timeout-- > 0) {
 535                 val = snd_via82xx_codec_xread(chip);
 536                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 537                 if (val1 == stat)
 538                         return val & 0xffff;
 539                 udelay(1);
 540         }
 541         return -EIO;
 542 }
 543
 544 static void snd_via82xx_codec_wait(ac97_t *ac97)
 545 {
 546         via82xx_t *chip = ac97->private_data;
 547         int err;
 548         err = snd_via82xx_codec_ready(chip, ac97->num);
 549         /* here we need to wait fairly for long time.. */
 550         set_current_state(TASK_UNINTERRUPTIBLE);
 551         schedule_timeout(HZ/2);
 552 }
 553
 554 static void snd_via82xx_codec_write(ac97_t *ac97,
 555                                     unsigned short reg,
 556                                     unsigned short val)
 557 {
 558         via82xx_t *chip = ac97->private_data;
 559         unsigned int xval;
 560
 561         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 562         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 563         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 564         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 565         snd_via82xx_codec_xwrite(chip, xval);
 566         snd_via82xx_codec_ready(chip, ac97->num);
 567 }
 568
 569 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 570 {
 571         via82xx_t *chip = ac97->private_data;
 572         unsigned int xval, val = 0xffff;
 573         int again = 0;
 574
 575         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 576         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 577         xval |= VIA_REG_AC97_READ;
 578         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 579         while (1) {
 580                 if (again++ > 3) {
 581                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 582                         return 0xffff;
 583                 }
 584                 snd_via82xx_codec_xwrite(chip, xval);
 585                 udelay (20);
 586                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 587                         udelay(25);
 588                         val = snd_via82xx_codec_xread(chip);
 589                         break;
 590                 }
 591         }
 592         return val & 0xffff;
 593 }
 594
 595 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 596 {
 597         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 598              VIADEV_REG(viadev, OFFSET_CONTROL));
 599         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 600         udelay(50);
 601         /* disable interrupts */
 602         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 603         /* clear interrupts */
 604         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 605         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 606         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 607         viadev->lastpos = 0;
 608 }
 609
 610
 611 /*
 612  *  Interrupt handler
 613  */
 614
 615 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 616 {
 617         via82xx_t *chip = dev_id;
 618         unsigned int status;
 619         unsigned int i;
 620
 621         status = inl(VIAREG(chip, SGD_SHADOW));
 622         if (! (status & chip->intr_mask)) {
 623                 if (chip->rmidi)
 624                         /* check mpu401 interrupt */
 625                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 626                 return IRQ_NONE;
 627         }
 628
 629         /* check status for each stream */
 630         spin_lock(&chip->reg_lock);
 631         for (i = 0; i < chip->num_devs; i++) {
 632                 viadev_t *viadev = &chip->devs[i];
 633                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 634                 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
 635                 if (! c_status)
 636                         continue;
 637                 if (viadev->substream && viadev->running) {
 638                         spin_unlock(&chip->reg_lock);
 639                         snd_pcm_period_elapsed(viadev->substream);
 640                         spin_lock(&chip->reg_lock);
 641                 }
 642                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 643         }
 644         spin_unlock(&chip->reg_lock);
 645         return IRQ_HANDLED;
 646 }
 647
 648 /*
 649  *  PCM callbacks
 650  */
 651
 652 /*
 653  * trigger callback
 654  */
 655 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 656 {
 657         via82xx_t *chip = snd_pcm_substream_chip(substream);
 658         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 659         unsigned char val;
 660
 661         if (chip->chip_type != TYPE_VIA686)
 662                 val = VIA_REG_CTRL_INT;
 663         else
 664                 val = 0;
 665         switch (cmd) {
 666         case SNDRV_PCM_TRIGGER_START:
 667                 val |= VIA_REG_CTRL_START;
 668                 viadev->running = 1;
 669                 break;
 670         case SNDRV_PCM_TRIGGER_STOP:
 671                 val = VIA_REG_CTRL_TERMINATE;
 672                 viadev->running = 0;
 673                 break;
 674         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 675                 val |= VIA_REG_CTRL_PAUSE;
 676                 viadev->running = 0;
 677                 break;
 678         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 679                 viadev->running = 1;
 680                 break;
 681         default:
 682                 return -EINVAL;
 683         }
 684         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 685         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 686                 snd_via82xx_channel_reset(chip, viadev);
 687         return 0;
 688 }
 689
 690
 691 /*
 692  * pointer callbacks
 693  */
 694
 695 /*
 696  * calculate the linear position at the given sg-buffer index and the rest count
 697  */
 698
 699 #define check_invalid_pos(viadev,pos) \
 700         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 701
 702 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 703 {
 704         unsigned int size, base, res;
 705
 706         size = viadev->idx_table[idx].size;
 707         base = viadev->idx_table[idx].offset;
 708         res = base + size - count;
 709
 710         /* check the validity of the calculated position */
 711         if (size < count) {
 712                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 713                 res = viadev->lastpos;
 714         } else {
 715                 if (! count) {
 716                         /* Some mobos report count = 0 on the DMA boundary,
 717                          * i.e. count = size indeed.
 718                          * Let's check whether this step is above the expected size.
 719                          */
 720                         int delta = res - viadev->lastpos;
 721                         if (delta < 0)
 722                                 delta += viadev->bufsize;
 723                         if ((unsigned int)delta > viadev->fragsize)
 724                                 res = base;
 725                 }
 726                 if (check_invalid_pos(viadev, res)) {
 727 #ifdef POINTER_DEBUG
 728                         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);
 729 #endif
 730                         /* count register returns full size when end of buffer is reached */
 731                         res = base + size;
 732                         if (check_invalid_pos(viadev, res)) {
 733                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 734                                 res = viadev->lastpos;
 735                         }
 736                 }
 737         }
 738         viadev->lastpos = res; /* remember the last position */
 739         if (res >= viadev->bufsize)
 740                 res -= viadev->bufsize;
 741         return res;
 742 }
 743
 744 /*
 745  * get the current pointer on via686
 746  */
 747 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 748 {
 749         via82xx_t *chip = snd_pcm_substream_chip(substream);
 750         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 751         unsigned int idx, ptr, count, res;
 752
 753         snd_assert(viadev->tbl_entries, return 0);
 754         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 755                 return 0;
 756
 757         spin_lock(&chip->reg_lock);
 758         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 759         /* The via686a does not have the current index register,
 760          * so we need to calculate the index from CURR_PTR.
 761          */
 762         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 763         if (ptr <= (unsigned int)viadev->table.addr)
 764                 idx = 0;
 765         else /* CURR_PTR holds the address + 8 */
 766                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 767         res = calc_linear_pos(viadev, idx, count);
 768         spin_unlock(&chip->reg_lock);
 769
 770         return bytes_to_frames(substream->runtime, res);
 771 }
 772
 773 /*
 774  * get the current pointer on via823x
 775  */
 776 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 777 {
 778         via82xx_t *chip = snd_pcm_substream_chip(substream);
 779         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 780         unsigned int idx, count, res;
 781         int timeout = 5000;
 782
 783         snd_assert(viadev->tbl_entries, return 0);
 784         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 785                 return 0;
 786         spin_lock(&chip->reg_lock);
 787         do {
 788                 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 789                 /* some mobos read 0 count */
 790                 if ((count & 0xffffff) || ! viadev->running)
 791                         break;
 792         } while (--timeout);
 793         if (! timeout)
 794                 snd_printd(KERN_ERR "zero position is read\n");
 795         idx = count >> 24;
 796         if (idx >= viadev->tbl_entries) {
 797 #ifdef POINTER_DEBUG
 798                 printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 799 #endif
 800                 res = viadev->lastpos;
 801         } else {
 802                 count &= 0xffffff;
 803                 res = calc_linear_pos(viadev, idx, count);
 804         }
 805         spin_unlock(&chip->reg_lock);
 806
 807         return bytes_to_frames(substream->runtime, res);
 808 }
 809
 810
 811 /*
 812  * hw_params callback:
 813  * allocate the buffer and build up the buffer description table
 814  */
 815 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 816                                  snd_pcm_hw_params_t * hw_params)
 817 {
 818         via82xx_t *chip = snd_pcm_substream_chip(substream);
 819         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 820         int err;
 821
 822         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 823         if (err < 0)
 824                 return err;
 825         err = build_via_table(viadev, substream, chip->pci,
 826                               params_periods(hw_params),
 827                               params_period_bytes(hw_params));
 828         if (err < 0)
 829                 return err;
 830
 831         return 0;
 832 }
 833
 834 /*
 835  * hw_free callback:
 836  * clean up the buffer description table and release the buffer
 837  */
 838 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 839 {
 840         via82xx_t *chip = snd_pcm_substream_chip(substream);
 841         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 842
 843         clean_via_table(viadev, substream, chip->pci);
 844         snd_pcm_lib_free_pages(substream);
 845         return 0;
 846 }
 847
 848
 849 /*
 850  * set up the table pointer
 851  */
 852 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 853 {
 854         snd_via82xx_codec_ready(chip, 0);
 855         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 856         udelay(20);
 857         snd_via82xx_codec_ready(chip, 0);
 858 }
 859
 860 /*
 861  * prepare callback for playback and capture on via686
 862  */
 863 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 864 {
 865         snd_via82xx_channel_reset(chip, viadev);
 866         /* this must be set after channel_reset */
 867         snd_via82xx_set_table_ptr(chip, viadev);
 868         outb(VIA_REG_TYPE_AUTOSTART |
 869              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 870              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 871              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 872              VIA_REG_TYPE_INT_EOL |
 873              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 874 }
 875
 876 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 877 {
 878         via82xx_t *chip = snd_pcm_substream_chip(substream);
 879         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 880         snd_pcm_runtime_t *runtime = substream->runtime;
 881
 882         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 883         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 884         via686_setup_format(chip, viadev, runtime);
 885         return 0;
 886 }
 887
 888 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 889 {
 890         via82xx_t *chip = snd_pcm_substream_chip(substream);
 891         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 892         snd_pcm_runtime_t *runtime = substream->runtime;
 893
 894         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 895         via686_setup_format(chip, viadev, runtime);
 896         return 0;
 897 }
 898
 899 /*
 900  * lock the current rate
 901  */
 902 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 903 {
 904         int changed = 0;
 905
 906         spin_lock_irq(&rec->lock);
 907         if (rec->rate != rate) {
 908                 if (rec->rate && rec->used > 1) /* already set */
 909                         changed = -EINVAL;
 910                 else {
 911                         rec->rate = rate;
 912                         changed = 1;
 913                 }
 914         }
 915         spin_unlock_irq(&rec->lock);
 916         return changed;
 917 }
 918
 919 /*
 920  * prepare callback for DSX playback on via823x
 921  */
 922 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
 923 {
 924         via82xx_t *chip = snd_pcm_substream_chip(substream);
 925         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 926         snd_pcm_runtime_t *runtime = substream->runtime;
 927         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
 928         int rate_changed;
 929         u32 rbits;
 930
 931         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
 932                 return rate_changed;
 933         if (rate_changed) {
 934                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
 935                                   chip->no_vra ? 48000 : runtime->rate);
 936                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF,
 937                                   chip->no_vra ? 48000 : runtime->rate);
 938         }
 939         if (runtime->rate == 48000)
 940                 rbits = 0xfffff;
 941         else
 942                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
 943         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
 944         snd_via82xx_channel_reset(chip, viadev);
 945         snd_via82xx_set_table_ptr(chip, viadev);
 946         outb(chip->playback_volume[0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
 947         outb(chip->playback_volume[1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
 948         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 949              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
 950              rbits | /* rate */
 951              0xff000000,    /* STOP index is never reached */
 952              VIADEV_REG(viadev, OFFSET_STOP_IDX));
 953         udelay(20);
 954         snd_via82xx_codec_ready(chip, 0);
 955         return 0;
 956 }
 957
 958 /*
 959  * prepare callback for multi-channel playback on via823x
 960  */
 961 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
 962 {
 963         via82xx_t *chip = snd_pcm_substream_chip(substream);
 964         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 965         snd_pcm_runtime_t *runtime = substream->runtime;
 966         unsigned int slots;
 967         int fmt;
 968
 969         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
 970                 return -EINVAL;
 971         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 972         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
 973         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
 974         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 975         snd_via82xx_channel_reset(chip, viadev);
 976         snd_via82xx_set_table_ptr(chip, viadev);
 977
 978         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
 979         fmt |= runtime->channels << 4;
 980         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
 981 #if 0
 982         if (chip->revision == VIA_REV_8233A)
 983                 slots = 0;
 984         else
 985 #endif
 986         {
 987                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
 988                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
 989                 switch (runtime->channels) {
 990                 case 1: slots = (1<<0) | (1<<4); break;
 991                 case 2: slots = (1<<0) | (2<<4); break;
 992                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
 993                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
 994                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
 995                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
 996                 default: slots = 0; break;
 997                 }
 998         }
 999         /* STOP index is never reached */
1000         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1001         udelay(20);
1002         snd_via82xx_codec_ready(chip, 0);
1003         return 0;
1004 }
1005
1006 /*
1007  * prepare callback for capture on via823x
1008  */
1009 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1010 {
1011         via82xx_t *chip = snd_pcm_substream_chip(substream);
1012         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1013         snd_pcm_runtime_t *runtime = substream->runtime;
1014
1015         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1016                 return -EINVAL;
1017         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1018         snd_via82xx_channel_reset(chip, viadev);
1019         snd_via82xx_set_table_ptr(chip, viadev);
1020         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1021         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1022              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1023              0xff000000,    /* STOP index is never reached */
1024              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1025         udelay(20);
1026         snd_via82xx_codec_ready(chip, 0);
1027         return 0;
1028 }
1029
1030
1031 /*
1032  * pcm hardware definition, identical for both playback and capture
1033  */
1034 static snd_pcm_hardware_t snd_via82xx_hw =
1035 {
1036         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1037                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1038                                  SNDRV_PCM_INFO_MMAP_VALID |
1039                                  SNDRV_PCM_INFO_RESUME |
1040                                  SNDRV_PCM_INFO_PAUSE),
1041         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1042         .rates =                SNDRV_PCM_RATE_48000,
1043         .rate_min =             48000,
1044         .rate_max =             48000,
1045         .channels_min =         1,
1046         .channels_max =         2,
1047         .buffer_bytes_max =     128 * 1024,
1048         .period_bytes_min =     32,
1049         .period_bytes_max =     128 * 1024,
1050         .periods_min =          2,
1051         .periods_max =          VIA_TABLE_SIZE / 2,
1052         .fifo_size =            0,
1053 };
1054
1055
1056 /*
1057  * open callback skeleton
1058  */
1059 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1060 {
1061         snd_pcm_runtime_t *runtime = substream->runtime;
1062         int err;
1063         struct via_rate_lock *ratep;
1064
1065         runtime->hw = snd_via82xx_hw;
1066
1067         /* set the hw rate condition */
1068         ratep = &chip->rates[viadev->direction];
1069         spin_lock_irq(&ratep->lock);
1070         ratep->used++;
1071         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1072                 /* DXS#3 and spdif is on */
1073                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1074                 snd_pcm_limit_hw_rates(runtime);
1075         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1076                 /* fixed DXS playback rate */
1077                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1078                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1079         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1080                 /* use full SRC capabilities of DXS */
1081                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1082                                      SNDRV_PCM_RATE_8000_48000);
1083                 runtime->hw.rate_min = 8000;
1084                 runtime->hw.rate_max = 48000;
1085         } else if (! ratep->rate) {
1086                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1087                 runtime->hw.rates = chip->ac97->rates[idx];
1088                 snd_pcm_limit_hw_rates(runtime);
1089         } else {
1090                 /* a fixed rate */
1091                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1092                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1093         }
1094         spin_unlock_irq(&ratep->lock);
1095
1096         /* we may remove following constaint when we modify table entries
1097            in interrupt */
1098         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1099                 return err;
1100
1101         runtime->private_data = viadev;
1102         viadev->substream = substream;
1103
1104         return 0;
1105 }
1106
1107
1108 /*
1109  * open callback for playback on via686 and via823x DSX
1110  */
1111 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1112 {
1113         via82xx_t *chip = snd_pcm_substream_chip(substream);
1114         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1115         int err;
1116
1117         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1118                 return err;
1119         return 0;
1120 }
1121
1122 /*
1123  * open callback for playback on via823x multi-channel
1124  */
1125 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1126 {
1127         via82xx_t *chip = snd_pcm_substream_chip(substream);
1128         viadev_t *viadev = &chip->devs[chip->multi_devno];
1129         int err;
1130         /* channels constraint for VIA8233A
1131          * 3 and 5 channels are not supported
1132          */
1133         static unsigned int channels[] = {
1134                 1, 2, 4, 6
1135         };
1136         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1137                 .count = ARRAY_SIZE(channels),
1138                 .list = channels,
1139                 .mask = 0,
1140         };
1141
1142         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1143                 return err;
1144         substream->runtime->hw.channels_max = 6;
1145         if (chip->revision == VIA_REV_8233A)
1146                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1147         return 0;
1148 }
1149
1150 /*
1151  * open callback for capture on via686 and via823x
1152  */
1153 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1154 {
1155         via82xx_t *chip = snd_pcm_substream_chip(substream);
1156         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1157
1158         return snd_via82xx_pcm_open(chip, viadev, substream);
1159 }
1160
1161 /*
1162  * close callback
1163  */
1164 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1165 {
1166         via82xx_t *chip = snd_pcm_substream_chip(substream);
1167         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1168         struct via_rate_lock *ratep;
1169
1170         /* release the rate lock */
1171         ratep = &chip->rates[viadev->direction];
1172         spin_lock_irq(&ratep->lock);
1173         ratep->used--;
1174         if (! ratep->used)
1175                 ratep->rate = 0;
1176         spin_unlock_irq(&ratep->lock);
1177
1178         viadev->substream = NULL;
1179         return 0;
1180 }
1181
1182
1183 /* via686 playback callbacks */
1184 static snd_pcm_ops_t snd_via686_playback_ops = {
1185         .open =         snd_via82xx_playback_open,
1186         .close =        snd_via82xx_pcm_close,
1187         .ioctl =        snd_pcm_lib_ioctl,
1188         .hw_params =    snd_via82xx_hw_params,
1189         .hw_free =      snd_via82xx_hw_free,
1190         .prepare =      snd_via686_playback_prepare,
1191         .trigger =      snd_via82xx_pcm_trigger,
1192         .pointer =      snd_via686_pcm_pointer,
1193         .page =         snd_pcm_sgbuf_ops_page,
1194 };
1195
1196 /* via686 capture callbacks */
1197 static snd_pcm_ops_t snd_via686_capture_ops = {
1198         .open =         snd_via82xx_capture_open,
1199         .close =        snd_via82xx_pcm_close,
1200         .ioctl =        snd_pcm_lib_ioctl,
1201         .hw_params =    snd_via82xx_hw_params,
1202         .hw_free =      snd_via82xx_hw_free,
1203         .prepare =      snd_via686_capture_prepare,
1204         .trigger =      snd_via82xx_pcm_trigger,
1205         .pointer =      snd_via686_pcm_pointer,
1206         .page =         snd_pcm_sgbuf_ops_page,
1207 };
1208
1209 /* via823x DSX playback callbacks */
1210 static snd_pcm_ops_t snd_via8233_playback_ops = {
1211         .open =         snd_via82xx_playback_open,
1212         .close =        snd_via82xx_pcm_close,
1213         .ioctl =        snd_pcm_lib_ioctl,
1214         .hw_params =    snd_via82xx_hw_params,
1215         .hw_free =      snd_via82xx_hw_free,
1216         .prepare =      snd_via8233_playback_prepare,
1217         .trigger =      snd_via82xx_pcm_trigger,
1218         .pointer =      snd_via8233_pcm_pointer,
1219         .page =         snd_pcm_sgbuf_ops_page,
1220 };
1221
1222 /* via823x multi-channel playback callbacks */
1223 static snd_pcm_ops_t snd_via8233_multi_ops = {
1224         .open =         snd_via8233_multi_open,
1225         .close =        snd_via82xx_pcm_close,
1226         .ioctl =        snd_pcm_lib_ioctl,
1227         .hw_params =    snd_via82xx_hw_params,
1228         .hw_free =      snd_via82xx_hw_free,
1229         .prepare =      snd_via8233_multi_prepare,
1230         .trigger =      snd_via82xx_pcm_trigger,
1231         .pointer =      snd_via8233_pcm_pointer,
1232         .page =         snd_pcm_sgbuf_ops_page,
1233 };
1234
1235 /* via823x capture callbacks */
1236 static snd_pcm_ops_t snd_via8233_capture_ops = {
1237         .open =         snd_via82xx_capture_open,
1238         .close =        snd_via82xx_pcm_close,
1239         .ioctl =        snd_pcm_lib_ioctl,
1240         .hw_params =    snd_via82xx_hw_params,
1241         .hw_free =      snd_via82xx_hw_free,
1242         .prepare =      snd_via8233_capture_prepare,
1243         .trigger =      snd_via82xx_pcm_trigger,
1244         .pointer =      snd_via8233_pcm_pointer,
1245         .page =         snd_pcm_sgbuf_ops_page,
1246 };
1247
1248
1249 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
1250 {
1251         chip->devs[idx].reg_offset = reg_offset;
1252         chip->devs[idx].direction = direction;
1253         chip->devs[idx].port = chip->port + reg_offset;
1254 }
1255
1256 /*
1257  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1258  */
1259 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1260 {
1261         snd_pcm_t *pcm;
1262         int i, err;
1263
1264         chip->playback_devno = 0;       /* x 4 */
1265         chip->multi_devno = 4;          /* x 1 */
1266         chip->capture_devno = 5;        /* x 2 */
1267         chip->num_devs = 7;
1268         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1269
1270         /* PCM #0:  4 DSX playbacks and 1 capture */
1271         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1272         if (err < 0)
1273                 return err;
1274         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1275         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1276         pcm->private_data = chip;
1277         strcpy(pcm->name, chip->card->shortname);
1278         chip->pcms[0] = pcm;
1279         /* set up playbacks */
1280         for (i = 0; i < 4; i++)
1281                 init_viadev(chip, i, 0x10 * i, 0);
1282         /* capture */
1283         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1284
1285         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1286                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1287                 return err;
1288
1289         /* PCM #1:  multi-channel playback and 2nd capture */
1290         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1291         if (err < 0)
1292                 return err;
1293         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1294         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1295         pcm->private_data = chip;
1296         strcpy(pcm->name, chip->card->shortname);
1297         chip->pcms[1] = pcm;
1298         /* set up playback */
1299         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1300         /* set up capture */
1301         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 1);
1302
1303         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1304                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1305                 return err;
1306
1307         return 0;
1308 }
1309
1310 /*
1311  * create pcm instances for VIA8233A
1312  */
1313 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1314 {
1315         snd_pcm_t *pcm;
1316         int err;
1317
1318         chip->multi_devno = 0;
1319         chip->playback_devno = 1;
1320         chip->capture_devno = 2;
1321         chip->num_devs = 3;
1322         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1323
1324         /* PCM #0:  multi-channel playback and capture */
1325         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1326         if (err < 0)
1327                 return err;
1328         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1329         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1330         pcm->private_data = chip;
1331         strcpy(pcm->name, chip->card->shortname);
1332         chip->pcms[0] = pcm;
1333         /* set up playback */
1334         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1335         /* capture */
1336         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1337
1338         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1339                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1340                 return err;
1341
1342         /* SPDIF supported? */
1343         if (! ac97_can_spdif(chip->ac97))
1344                 return 0;
1345
1346         /* PCM #1:  DXS3 playback (for spdif) */
1347         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1348         if (err < 0)
1349                 return err;
1350         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1351         pcm->private_data = chip;
1352         strcpy(pcm->name, chip->card->shortname);
1353         chip->pcms[1] = pcm;
1354         /* set up playback */
1355         init_viadev(chip, chip->playback_devno, 0x30, 0);
1356
1357         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1358                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1359                 return err;
1360
1361         return 0;
1362 }
1363
1364 /*
1365  * create a pcm instance for via686a/b
1366  */
1367 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1368 {
1369         snd_pcm_t *pcm;
1370         int err;
1371
1372         chip->playback_devno = 0;
1373         chip->capture_devno = 1;
1374         chip->num_devs = 2;
1375         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1376
1377         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1378         if (err < 0)
1379                 return err;
1380         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1381         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1382         pcm->private_data = chip;
1383         strcpy(pcm->name, chip->card->shortname);
1384         chip->pcms[0] = pcm;
1385         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0);
1386         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 1);
1387
1388         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1389                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1390                 return err;
1391
1392         return 0;
1393 }
1394
1395
1396 /*
1397  *  Mixer part
1398  */
1399
1400 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1401 {
1402         /* formerly they were "Line" and "Mic", but it looks like that they
1403          * have nothing to do with the actual physical connections...
1404          */
1405         static char *texts[2] = {
1406                 "Input1", "Input2"
1407         };
1408         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1409         uinfo->count = 1;
1410         uinfo->value.enumerated.items = 2;
1411         if (uinfo->value.enumerated.item >= 2)
1412                 uinfo->value.enumerated.item = 1;
1413         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1414         return 0;
1415 }
1416
1417 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1418 {
1419         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1420         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1421         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1422         return 0;
1423 }
1424
1425 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1426 {
1427         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1428         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1429         u8 val, oval;
1430
1431         spin_lock_irq(&chip->reg_lock);
1432         oval = inb(port);
1433         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1434         if (ucontrol->value.enumerated.item[0])
1435                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1436         if (val != oval)
1437                 outb(val, port);
1438         spin_unlock_irq(&chip->reg_lock);
1439         return val != oval;
1440 }
1441
1442 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1443         .name = "Input Source Select",
1444         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1445         .info = snd_via8233_capture_source_info,
1446         .get = snd_via8233_capture_source_get,
1447         .put = snd_via8233_capture_source_put,
1448 };
1449
1450 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1451 {
1452         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1453         uinfo->count = 1;
1454         uinfo->value.integer.min = 0;
1455         uinfo->value.integer.max = 1;
1456         return 0;
1457 }
1458
1459 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1460 {
1461         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1462         u8 val;
1463
1464         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1465         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1466         return 0;
1467 }
1468
1469 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1470 {
1471         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1472         u8 val, oval;
1473
1474         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1475         val = oval & ~VIA8233_SPDIF_DX3;
1476         if (ucontrol->value.integer.value[0])
1477                 val |= VIA8233_SPDIF_DX3;
1478         /* save the spdif flag for rate filtering */
1479         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1480         if (val != oval) {
1481                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1482                 return 1;
1483         }
1484         return 0;
1485 }
1486
1487 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1488         .name = "IEC958 Output Switch",
1489         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1490         .info = snd_via8233_dxs3_spdif_info,
1491         .get = snd_via8233_dxs3_spdif_get,
1492         .put = snd_via8233_dxs3_spdif_put,
1493 };
1494
1495 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1496 {
1497         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1498         uinfo->count = 2;
1499         uinfo->value.integer.min = 0;
1500         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1501         return 0;
1502 }
1503
1504 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1505 {
1506         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1507         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[0];
1508         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[1];
1509         return 0;
1510 }
1511
1512 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1513 {
1514         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1515         unsigned int idx;
1516         unsigned char val;
1517         int i, change = 0;
1518
1519         for (i = 0; i < 2; i++) {
1520                 val = ucontrol->value.integer.value[i];
1521                 if (val > VIA_DXS_MAX_VOLUME)
1522                         val = VIA_DXS_MAX_VOLUME;
1523                 val = VIA_DXS_MAX_VOLUME - val;
1524                 if (val != chip->playback_volume[i]) {
1525                         change = 1;
1526                         chip->playback_volume[i] = val;
1527                         for (idx = 0; idx < 4; idx++) {
1528                                 unsigned long port = chip->port + 0x10 * idx;
1529                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1530                         }
1531                 }
1532         }
1533         return change;
1534 }
1535
1536 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1537         .name = "PCM Playback Volume",
1538         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1539         .info = snd_via8233_dxs_volume_info,
1540         .get = snd_via8233_dxs_volume_get,
1541         .put = snd_via8233_dxs_volume_put,
1542 };
1543
1544 /*
1545  */
1546
1547 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1548 {
1549         via82xx_t *chip = bus->private_data;
1550         chip->ac97_bus = NULL;
1551 }
1552
1553 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1554 {
1555         via82xx_t *chip = ac97->private_data;
1556         chip->ac97 = NULL;
1557 }
1558
1559 static struct ac97_quirk ac97_quirks[] = {
1560         {
1561                 .subvendor = 0x1106,
1562                 .subdevice = 0x4161,
1563                 .codec_id = 0x56494161, /* VT1612A */
1564                 .name = "Soltek SL-75DRV5",
1565                 .type = AC97_TUNE_NONE
1566         },
1567         {       /* FIXME: which codec? */
1568                 .subvendor = 0x1106,
1569                 .subdevice = 0x4161,
1570                 .name = "ASRock K7VT2",
1571                 .type = AC97_TUNE_HP_ONLY
1572         },
1573         {
1574                 .subvendor = 0x1019,
1575                 .subdevice = 0x0a81,
1576                 .name = "ECS K7VTA3",
1577                 .type = AC97_TUNE_HP_ONLY
1578         },
1579         {
1580                 .subvendor = 0x1019,
1581                 .subdevice = 0x0a85,
1582                 .name = "ECS L7VMM2",
1583                 .type = AC97_TUNE_HP_ONLY
1584         },
1585         {
1586                 .subvendor = 0x1849,
1587                 .subdevice = 0x3059,
1588                 .name = "ASRock K7VM2",
1589                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1590         },
1591         {
1592                 .subvendor = 0x14cd,
1593                 .subdevice = 0x7002,
1594                 .name = "Unknown",
1595                 .type = AC97_TUNE_ALC_JACK
1596         },
1597         {
1598                 .subvendor = 0x1071,
1599                 .subdevice = 0x8590,
1600                 .name = "Mitac Mobo",
1601                 .type = AC97_TUNE_ALC_JACK
1602         },
1603         {
1604                 .subvendor = 0x161f,
1605                 .subdevice = 0x202b,
1606                 .name = "Arima Notebook",
1607                 .type = AC97_TUNE_HP_ONLY,
1608         },
1609         { } /* terminator */
1610 };
1611
1612 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_override)
1613 {
1614         ac97_template_t ac97;
1615         int err;
1616         static ac97_bus_ops_t ops = {
1617                 .write = snd_via82xx_codec_write,
1618                 .read = snd_via82xx_codec_read,
1619                 .wait = snd_via82xx_codec_wait,
1620         };
1621
1622         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1623                 return err;
1624         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1625         chip->ac97_bus->clock = chip->ac97_clock;
1626         chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
1627
1628         memset(&ac97, 0, sizeof(ac97));
1629         ac97.private_data = chip;
1630         ac97.private_free = snd_via82xx_mixer_free_ac97;
1631         ac97.pci = chip->pci;
1632         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1633                 return err;
1634
1635         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1636
1637         if (chip->chip_type != TYPE_VIA686) {
1638                 /* use slot 10/11 */
1639                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1640         }
1641
1642         return 0;
1643 }
1644
1645 #ifdef SUPPORT_JOYSTICK
1646 #define JOYSTICK_ADDR   0x200
1647 static int __devinit snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1648 {
1649         struct gameport *gp;
1650         struct resource *r;
1651
1652         if (!joystick[dev])
1653                 return -ENODEV;
1654
1655         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1656         if (!r) {
1657                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n", JOYSTICK_ADDR);
1658                 return -EBUSY;
1659         }
1660
1661         chip->gameport = gp = gameport_allocate_port();
1662         if (!gp) {
1663                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1664                 release_resource(r);
1665                 kfree_nocheck(r);
1666                 return -ENOMEM;
1667         }
1668
1669         gameport_set_name(gp, "VIA686 Gameport");
1670         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1671         gameport_set_dev_parent(gp, &chip->pci->dev);
1672         gp->io = JOYSTICK_ADDR;
1673         gameport_set_port_data(gp, r);
1674
1675         /* Enable legacy joystick port */
1676         *legacy |= VIA_FUNC_ENABLE_GAME;
1677         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1678
1679         gameport_register_port(chip->gameport);
1680
1681         return 0;
1682 }
1683
1684 static void snd_via686_free_gameport(via82xx_t *chip)
1685 {
1686         if (chip->gameport) {
1687                 struct resource *r = gameport_get_port_data(chip->gameport);
1688
1689                 gameport_unregister_port(chip->gameport);
1690                 chip->gameport = NULL;
1691                 release_resource(r);
1692                 kfree_nocheck(r);
1693         }
1694 }
1695 #else
1696 static inline int snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1697 {
1698         return -ENOSYS;
1699 }
1700 static inline void snd_via686_free_gameport(via82xx_t *chip) { }
1701 #endif
1702
1703
1704 /*
1705  *
1706  */
1707
1708 static int __devinit snd_via8233_init_misc(via82xx_t *chip, int dev)
1709 {
1710         int i, err, caps;
1711         unsigned char val;
1712
1713         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1714         for (i = 0; i < caps; i++) {
1715                 snd_via8233_capture_source.index = i;
1716                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1717                 if (err < 0)
1718                         return err;
1719         }
1720         if (ac97_can_spdif(chip->ac97)) {
1721                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1722                 if (err < 0)
1723                         return err;
1724         }
1725         if (chip->chip_type != TYPE_VIA8233A) {
1726                 /* when no h/w PCM volume control is found, use DXS volume control
1727                  * as the PCM vol control
1728                  */
1729                 snd_ctl_elem_id_t sid;
1730                 memset(&sid, 0, sizeof(sid));
1731                 strcpy(sid.name, "PCM Playback Volume");
1732                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1733                 if (! snd_ctl_find_id(chip->card, &sid)) {
1734                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1735                         if (err < 0)
1736                                 return err;
1737                 }
1738         }
1739
1740         /* select spdif data slot 10/11 */
1741         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1742         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1743         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1744         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1745
1746         return 0;
1747 }
1748
1749 static int __devinit snd_via686_init_misc(via82xx_t *chip, int dev)
1750 {
1751         unsigned char legacy, legacy_cfg;
1752         int rev_h = 0;
1753
1754         legacy = chip->old_legacy;
1755         legacy_cfg = chip->old_legacy_cfg;
1756         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1757         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1758         if (chip->revision >= VIA_REV_686_H) {
1759                 rev_h = 1;
1760                 if (mpu_port[dev] >= 0x200) {   /* force MIDI */
1761                         mpu_port[dev] &= 0xfffc;
1762                         pci_write_config_dword(chip->pci, 0x18, mpu_port[dev] | 0x01);
1763 #ifdef CONFIG_PM
1764                         chip->mpu_port_saved = mpu_port[dev];
1765 #endif
1766                 } else {
1767                         mpu_port[dev] = pci_resource_start(chip->pci, 2);
1768                 }
1769         } else {
1770                 switch (mpu_port[dev]) {        /* force MIDI */
1771                 case 0x300:
1772                 case 0x310:
1773                 case 0x320:
1774                 case 0x330:
1775                         legacy_cfg &= ~(3 << 2);
1776                         legacy_cfg |= (mpu_port[dev] & 0x0030) >> 2;
1777                         break;
1778                 default:                        /* no, use BIOS settings */
1779                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1780                                 mpu_port[dev] = 0x300 + ((legacy_cfg & 0x000c) << 2);
1781                         break;
1782                 }
1783         }
1784         if (mpu_port[dev] >= 0x200 &&
1785             (chip->mpu_res = request_region(mpu_port[dev], 2, "VIA82xx MPU401")) != NULL) {
1786                 if (rev_h)
1787                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1788                 legacy |= VIA_FUNC_ENABLE_MIDI;
1789         } else {
1790                 if (rev_h)
1791                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1792                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1793                 mpu_port[dev] = 0;
1794         }
1795
1796         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1797         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1798         if (chip->mpu_res) {
1799                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1800                                         mpu_port[dev], 1,
1801                                         chip->irq, 0, &chip->rmidi) < 0) {
1802                         printk(KERN_WARNING "unable to initialize MPU-401 at 0x%lx, skipping\n", mpu_port[dev]);
1803                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1804                 } else {
1805                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1806                 }
1807                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1808         }
1809
1810         snd_via686_create_gameport(chip, dev, &legacy);
1811
1812 #ifdef CONFIG_PM
1813         chip->legacy_saved = legacy;
1814         chip->legacy_cfg_saved = legacy_cfg;
1815 #endif
1816
1817         return 0;
1818 }
1819
1820
1821 /*
1822  * proc interface
1823  */
1824 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1825 {
1826         via82xx_t *chip = entry->private_data;
1827         int i;
1828
1829         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1830         for (i = 0; i < 0xa0; i += 4) {
1831                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1832         }
1833 }
1834
1835 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1836 {
1837         snd_info_entry_t *entry;
1838
1839         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1840                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1841 }
1842
1843 /*
1844  *
1845  */
1846
1847 static int snd_via82xx_chip_init(via82xx_t *chip)
1848 {
1849         unsigned int val;
1850         int max_count;
1851         unsigned char pval;
1852
1853 #if 0 /* broken on K7M? */
1854         if (chip->chip_type == TYPE_VIA686)
1855                 /* disable all legacy ports */
1856                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1857 #endif
1858         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1859         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1860                 /* deassert ACLink reset, force SYNC */
1861                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1862                                       VIA_ACLINK_CTRL_ENABLE |
1863                                       VIA_ACLINK_CTRL_RESET |
1864                                       VIA_ACLINK_CTRL_SYNC);
1865                 udelay(100);
1866 #if 1 /* FIXME: should we do full reset here for all chip models? */
1867                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
1868                 udelay(100);
1869 #else
1870                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
1871                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1872                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
1873                 udelay(2);
1874 #endif
1875                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1876                 /* note - FM data out has trouble with non VRA codecs !! */
1877                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1878                 udelay(100);
1879         }
1880
1881         /* Make sure VRA is enabled, in case we didn't do a
1882          * complete codec reset, above */
1883         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
1884         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
1885                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1886                 /* note - FM data out has trouble with non VRA codecs !! */
1887                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1888                 udelay(100);
1889         }
1890
1891         /* wait until codec ready */
1892         max_count = ((3 * HZ) / 4) + 1;
1893         do {
1894                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1895                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
1896                         break;
1897                 set_current_state(TASK_UNINTERRUPTIBLE);
1898                 schedule_timeout(1);
1899         } while (--max_count > 0);
1900
1901         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1902                 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
1903
1904 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
1905         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1906                                  VIA_REG_AC97_SECONDARY_VALID |
1907                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1908         max_count = ((3 * HZ) / 4) + 1;
1909         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1910                                  VIA_REG_AC97_SECONDARY_VALID |
1911                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1912         do {
1913                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1914                         chip->ac97_secondary = 1;
1915                         goto __ac97_ok2;
1916                 }
1917                 set_current_state(TASK_INTERRUPTIBLE);
1918                 schedule_timeout(1);
1919         } while (--max_count > 0);
1920         /* This is ok, the most of motherboards have only one codec */
1921
1922       __ac97_ok2:
1923 #endif
1924
1925         if (chip->chip_type == TYPE_VIA686) {
1926                 /* route FM trap to IRQ, disable FM trap */
1927                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1928                 /* disable all GPI interrupts */
1929                 outl(0, VIAREG(chip, GPI_INTR));
1930         }
1931
1932         if (chip->chip_type != TYPE_VIA686) {
1933                 /* Workaround for Award BIOS bug:
1934                  * DXS channels don't work properly with VRA if MC97 is disabled.
1935                  */
1936                 struct pci_dev *pci;
1937                 pci = pci_find_device(0x1106, 0x3068, NULL); /* MC97 */
1938                 if (pci) {
1939                         unsigned char data;
1940                         pci_read_config_byte(pci, 0x44, &data);
1941                         pci_write_config_byte(pci, 0x44, data | 0x40);
1942                 }
1943         }
1944
1945         if (chip->chip_type != TYPE_VIA8233A) {
1946                 int i, idx;
1947                 for (idx = 0; idx < 4; idx++) {
1948                         unsigned long port = chip->port + 0x10 * idx;
1949                         for (i = 0; i < 2; i++)
1950                                 outb(chip->playback_volume[i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1951                 }
1952         }
1953
1954         return 0;
1955 }
1956
1957 #ifdef CONFIG_PM
1958 /*
1959  * power management
1960  */
1961 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
1962 {
1963         via82xx_t *chip = card->pm_private_data;
1964         int i;
1965
1966         for (i = 0; i < 2; i++)
1967                 if (chip->pcms[i])
1968                         snd_pcm_suspend_all(chip->pcms[i]);
1969         for (i = 0; i < chip->num_devs; i++)
1970                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1971         synchronize_irq(chip->irq);
1972         snd_ac97_suspend(chip->ac97);
1973
1974         /* save misc values */
1975         if (chip->chip_type != TYPE_VIA686) {
1976                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
1977                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
1978                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1979         }
1980
1981         pci_set_power_state(chip->pci, 3);
1982         pci_disable_device(chip->pci);
1983         return 0;
1984 }
1985
1986 static int snd_via82xx_resume(snd_card_t *card)
1987 {
1988         via82xx_t *chip = card->pm_private_data;
1989         int i;
1990
1991         pci_enable_device(chip->pci);
1992         pci_set_power_state(chip->pci, 0);
1993
1994         snd_via82xx_chip_init(chip);
1995
1996         if (chip->chip_type == TYPE_VIA686) {
1997                 if (chip->mpu_port_saved)
1998                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
1999                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2000                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2001         } else {
2002                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2003                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2004                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2005         }
2006
2007         snd_ac97_resume(chip->ac97);
2008
2009         for (i = 0; i < chip->num_devs; i++)
2010                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2011
2012         return 0;
2013 }
2014 #endif /* CONFIG_PM */
2015
2016 static int snd_via82xx_free(via82xx_t *chip)
2017 {
2018         unsigned int i;
2019
2020         if (chip->irq < 0)
2021                 goto __end_hw;
2022         /* disable interrupts */
2023         for (i = 0; i < chip->num_devs; i++)
2024                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2025         synchronize_irq(chip->irq);
2026       __end_hw:
2027         if (chip->irq >= 0)
2028                 free_irq(chip->irq, (void *)chip);
2029         if (chip->mpu_res) {
2030                 release_resource(chip->mpu_res);
2031                 kfree_nocheck(chip->mpu_res);
2032         }
2033         pci_release_regions(chip->pci);
2034
2035         if (chip->chip_type == TYPE_VIA686) {
2036                 snd_via686_free_gameport(chip);
2037                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2038                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2039         }
2040         pci_disable_device(chip->pci);
2041         kfree(chip);
2042         return 0;
2043 }
2044
2045 static int snd_via82xx_dev_free(snd_device_t *device)
2046 {
2047         via82xx_t *chip = device->device_data;
2048         return snd_via82xx_free(chip);
2049 }
2050
2051 static int __devinit snd_via82xx_create(snd_card_t * card,
2052                                         struct pci_dev *pci,
2053                                         int chip_type,
2054                                         int revision,
2055                                         unsigned int ac97_clock,
2056                                         via82xx_t ** r_via)
2057 {
2058         via82xx_t *chip;
2059         int err;
2060         static snd_device_ops_t ops = {
2061                 .dev_free =     snd_via82xx_dev_free,
2062         };
2063
2064         if ((err = pci_enable_device(pci)) < 0)
2065                 return err;
2066
2067         if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
2068                 pci_disable_device(pci);
2069                 return -ENOMEM;
2070         }
2071
2072         chip->chip_type = chip_type;
2073         chip->revision = revision;
2074
2075         spin_lock_init(&chip->reg_lock);
2076         spin_lock_init(&chip->rates[0].lock);
2077         spin_lock_init(&chip->rates[1].lock);
2078         chip->card = card;
2079         chip->pci = pci;
2080         chip->irq = -1;
2081
2082         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2083         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2084         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2085                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2086
2087         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2088                 kfree(chip);
2089                 pci_disable_device(pci);
2090                 return err;
2091         }
2092         chip->port = pci_resource_start(pci, 0);
2093         if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
2094                         card->driver, (void *)chip)) {
2095                 snd_printk("unable to grab IRQ %d\n", pci->irq);
2096                 snd_via82xx_free(chip);
2097                 return -EBUSY;
2098         }
2099         chip->irq = pci->irq;
2100         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2101                 chip->ac97_clock = ac97_clock;
2102         synchronize_irq(chip->irq);
2103
2104         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2105                 snd_via82xx_free(chip);
2106                 return err;
2107         }
2108
2109         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2110                 snd_via82xx_free(chip);
2111                 return err;
2112         }
2113
2114         /* The 8233 ac97 controller does not implement the master bit
2115          * in the pci command register. IMHO this is a violation of the PCI spec.
2116          * We call pci_set_master here because it does not hurt. */
2117         pci_set_master(pci);
2118
2119         snd_card_set_dev(card, &pci->dev);
2120
2121         *r_via = chip;
2122         return 0;
2123 }
2124
2125 struct via823x_info {
2126         int revision;
2127         char *name;
2128         int type;
2129 };
2130 static struct via823x_info via823x_cards[] __devinitdata = {
2131         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2132         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2133         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2134         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2135         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2136         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2137 };
2138
2139 /*
2140  * auto detection of DXS channel supports.
2141  */
2142 struct dxs_whitelist {
2143         unsigned short subvendor;
2144         unsigned short subdevice;
2145         unsigned short mask;
2146         short action;   /* new dxs_support value */
2147 };
2148
2149 static int __devinit check_dxs_list(struct pci_dev *pci)
2150 {
2151         static struct dxs_whitelist whitelist[] = {
2152                 { .subvendor = 0x1005, .subdevice = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2153                 { .subvendor = 0x1019, .subdevice = 0x0996, .action = VIA_DXS_48K },
2154                 { .subvendor = 0x1019, .subdevice = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2155                 { .subvendor = 0x1019, .subdevice = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2156                 { .subvendor = 0x1025, .subdevice = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2157                 { .subvendor = 0x1043, .subdevice = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2158                 { .subvendor = 0x1043, .subdevice = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2159                 { .subvendor = 0x1043, .subdevice = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2160                 { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC    }, /* ASUS A8V Deluxe */
2161                 { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2162                 { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */
2163                 { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2164                 { .subvendor = 0x1106, .subdevice = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2165                 { .subvendor = 0x1106, .subdevice = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2166                 { .subvendor = 0x1106, .subdevice = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2167                 { .subvendor = 0x1106, .subdevice = 0xc001, .action = VIA_DXS_SRC }, /* Insight P4-ITX */
2168                 { .subvendor = 0x1297, .subdevice = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2169                 { .subvendor = 0x1297, .subdevice = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2170                 { .subvendor = 0x1458, .subdevice = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2171                 { .subvendor = 0x1462, .subdevice = 0x0080, .action = VIA_DXS_SRC }, /* MSI K8T Neo-FIS2R */
2172                 { .subvendor = 0x1462, .subdevice = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2173                 { .subvendor = 0x1462, .subdevice = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2174                 { .subvendor = 0x1462, .subdevice = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2175                 { .subvendor = 0x1462, .subdevice = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2176                 { .subvendor = 0x147b, .subdevice = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2177                 { .subvendor = 0x147b, .subdevice = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2178                 { .subvendor = 0x147b, .subdevice = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2179                 { .subvendor = 0x147b, .subdevice = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2180                 { .subvendor = 0x14ff, .subdevice = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2181                 { .subvendor = 0x14ff, .subdevice = 0x0408, .action = VIA_DXS_NO_VRA }, /* Twinhead mobo */
2182                 { .subvendor = 0x1584, .subdevice = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2183                 { .subvendor = 0x1584, .subdevice = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2184                 { .subvendor = 0x161f, .subdevice = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2185                 { .subvendor = 0x161f, .subdevice = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2186                 { .subvendor = 0x1631, .subdevice = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2187                 { .subvendor = 0x1695, .subdevice = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2188                 { .subvendor = 0x1849, .subdevice = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2189                 { .subvendor = 0x1919, .subdevice = 0x200a, .action = VIA_DXS_NO_VRA }, /* Soltek SL-K8Tpro-939 */
2190                 { } /* terminator */
2191         };
2192         struct dxs_whitelist *w;
2193         unsigned short subsystem_vendor;
2194         unsigned short subsystem_device;
2195
2196         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2197         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2198
2199         for (w = whitelist; w->subvendor; w++) {
2200                 if (w->subvendor != subsystem_vendor)
2201                         continue;
2202                 if (w->mask) {
2203                         if ((w->mask & subsystem_device) == w->subdevice)
2204                                 return w->action;
2205                 } else {
2206                         if (subsystem_device == w->subdevice)
2207                                 return w->action;
2208                 }
2209         }
2210
2211         /*
2212          * not detected, try 48k rate only to be sure.
2213          */
2214         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2215         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2216         printk(KERN_INFO "         and report if it works on your machine.\n");
2217         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2218         return VIA_DXS_48K;
2219 };
2220
2221 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2222                                        const struct pci_device_id *pci_id)
2223 {
2224         static int dev;
2225         snd_card_t *card;
2226         via82xx_t *chip;
2227         unsigned char revision;
2228         int chip_type = 0, card_type;
2229         unsigned int i;
2230         int err;
2231
2232         if (dev >= SNDRV_CARDS)
2233                 return -ENODEV;
2234         if (!enable[dev]) {
2235                 dev++;
2236                 return -ENOENT;
2237         }
2238
2239         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
2240         if (card == NULL)
2241                 return -ENOMEM;
2242
2243         card_type = pci_id->driver_data;
2244         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2245         switch (card_type) {
2246         case TYPE_CARD_VIA686:
2247                 strcpy(card->driver, "VIA686A");
2248                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2249                 chip_type = TYPE_VIA686;
2250                 break;
2251         case TYPE_CARD_VIA8233:
2252                 chip_type = TYPE_VIA8233;
2253                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2254                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2255                         if (revision == via823x_cards[i].revision) {
2256                                 chip_type = via823x_cards[i].type;
2257                                 strcpy(card->shortname, via823x_cards[i].name);
2258                                 break;
2259                         }
2260                 }
2261                 if (chip_type != TYPE_VIA8233A) {
2262                         if (dxs_support[dev] == VIA_DXS_AUTO)
2263                                 dxs_support[dev] = check_dxs_list(pci);
2264                         /* force to use VIA8233 or 8233A model according to
2265                          * dxs_support module option
2266                          */
2267                         if (dxs_support[dev] == VIA_DXS_DISABLE)
2268                                 chip_type = TYPE_VIA8233A;
2269                         else
2270                                 chip_type = TYPE_VIA8233;
2271                 }
2272                 if (chip_type == TYPE_VIA8233A)
2273                         strcpy(card->driver, "VIA8233A");
2274                 else if (revision >= VIA_REV_8237)
2275                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2276                 else
2277                         strcpy(card->driver, "VIA8233");
2278                 break;
2279         default:
2280                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2281                 err = -EINVAL;
2282                 goto __error;
2283         }
2284
2285         if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
2286                 goto __error;
2287         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk[dev])) < 0)
2288                 goto __error;
2289
2290         if (chip_type == TYPE_VIA686) {
2291                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2292                     (err = snd_via686_init_misc(chip, dev)) < 0)
2293                         goto __error;
2294         } else {
2295                 if (chip_type == TYPE_VIA8233A) {
2296                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2297                                 goto __error;
2298                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2299                 } else {
2300                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2301                                 goto __error;
2302                         if (dxs_support[dev] == VIA_DXS_48K)
2303                                 chip->dxs_fixed = 1;
2304                         else if (dxs_support[dev] == VIA_DXS_NO_VRA)
2305                                 chip->no_vra = 1;
2306                         else if (dxs_support[dev] == VIA_DXS_SRC) {
2307                                 chip->no_vra = 1;
2308                                 chip->dxs_src = 1;
2309                         }
2310                 }
2311                 if ((err = snd_via8233_init_misc(chip, dev)) < 0)
2312                         goto __error;
2313         }
2314
2315         snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
2316
2317         /* disable interrupts */
2318         for (i = 0; i < chip->num_devs; i++)
2319                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2320
2321         snprintf(card->longname, sizeof(card->longname),
2322                  "%s with %s at %#lx, irq %d", card->shortname,
2323                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2324
2325         snd_via82xx_proc_init(chip);
2326
2327         if ((err = snd_card_register(card)) < 0) {
2328                 snd_card_free(card);
2329                 return err;
2330         }
2331         pci_set_drvdata(pci, card);
2332         dev++;
2333         return 0;
2334
2335  __error:
2336         snd_card_free(card);
2337         return err;
2338 }
2339
2340 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2341 {
2342         snd_card_free(pci_get_drvdata(pci));
2343         pci_set_drvdata(pci, NULL);
2344 }
2345
2346 static struct pci_driver driver = {
2347         .name = "VIA 82xx Audio",
2348         .id_table = snd_via82xx_ids,
2349         .probe = snd_via82xx_probe,
2350         .remove = __devexit_p(snd_via82xx_remove),
2351         SND_PCI_PM_CALLBACKS
2352 };
2353
2354 static int __init alsa_card_via82xx_init(void)
2355 {
2356         return pci_register_driver(&driver);
2357 }
2358
2359 static void __exit alsa_card_via82xx_exit(void)
2360 {
2361         pci_unregister_driver(&driver);
2362 }
2363
2364 module_init(alsa_card_via82xx_init)
2365 module_exit(alsa_card_via82xx_exit)