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 /* revision numbers for via686 */
 108 #define VIA_REV_686_A           0x10
 109 #define VIA_REV_686_B           0x11
 110 #define VIA_REV_686_C           0x12
 111 #define VIA_REV_686_D           0x13
 112 #define VIA_REV_686_E           0x14
 113 #define VIA_REV_686_H           0x20
 114
 115 /* revision numbers for via8233 */
 116 #define VIA_REV_PRE_8233        0x10    /* not in market */
 117 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 118 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 119 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 120 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 121 #define VIA_REV_8237            0x60
 122
 123 /*
 124  *  Direct registers
 125  */
 126
 127 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 128 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 129
 130 /* common offsets */
 131 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 132 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 133 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 134 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 135 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 136 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 137 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 138 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 139 #define   VIA_REG_CTRL_START            0x80    /* WO */
 140 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 141 #define   VIA_REG_CTRL_AUTOSTART        0x20
 142 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 143 #define   VIA_REG_CTRL_INT_STOP         0x04
 144 #define   VIA_REG_CTRL_INT_EOL          0x02
 145 #define   VIA_REG_CTRL_INT_FLAG         0x01
 146 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 147 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 148 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 149 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 150 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 151 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 152 #define   VIA_REG_TYPE_INT_LLINE        0x00
 153 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 154 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 155 #define   VIA_REG_TYPE_INT_MASK         0x0c
 156 #define   VIA_REG_TYPE_INT_EOL          0x02
 157 #define   VIA_REG_TYPE_INT_FLAG         0x01
 158 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 159 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 160 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 161 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 162 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 163 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 164 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 165
 166 #define DEFINE_VIA_REGSET(name,val) \
 167 enum {\
 168         VIA_REG_##name##_STATUS         = (val),\
 169         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 170         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 171         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 172         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 173         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 174         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 175 }
 176
 177 /* playback block */
 178 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 179 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 180 DEFINE_VIA_REGSET(FM, 0x20);
 181
 182 /* AC'97 */
 183 #define VIA_REG_AC97                    0x80    /* dword */
 184 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 185 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 186 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 187 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 188 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 189 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 190 #define   VIA_REG_AC97_BUSY             (1<<24)
 191 #define   VIA_REG_AC97_READ             (1<<23)
 192 #define   VIA_REG_AC97_CMD_SHIFT        16
 193 #define   VIA_REG_AC97_CMD_MASK         0x7e
 194 #define   VIA_REG_AC97_DATA_SHIFT       0
 195 #define   VIA_REG_AC97_DATA_MASK        0xffff
 196
 197 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 198 /* via686 */
 199 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 200 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 201 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 202 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 203 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 204 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 205 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 206 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 207 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 208 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 209 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 210 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 211 /* via8233 */
 212 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 213 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 214 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 215 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 216 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 217 #define   VIA8233_REG_SGD_CHAN_SDX      0
 218 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 219 #define   VIA8233_REG_SGD_CHAN_REC      6
 220 #define   VIA8233_REG_SGD_CHAN_REC1     7
 221
 222 #define VIA_REG_GPI_STATUS              0x88
 223 #define VIA_REG_GPI_INTR                0x8c
 224
 225 /* multi-channel and capture registers for via8233 */
 226 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 227 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 228
 229 /* via8233-specific registers */
 230 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 231 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 232 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 233 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 234 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 235 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 236 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 237 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 238
 239 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 240
 241 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 242 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 243 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 244 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 245
 246 #define VIA_TBL_BIT_FLAG        0x40000000
 247 #define VIA_TBL_BIT_EOL         0x80000000
 248
 249 /* pci space */
 250 #define VIA_ACLINK_STAT         0x40
 251 #define  VIA_ACLINK_C11_READY   0x20
 252 #define  VIA_ACLINK_C10_READY   0x10
 253 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 254 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 255 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 256 #define VIA_ACLINK_CTRL         0x41
 257 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 258 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 259 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 260 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 261 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 262 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 263 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 264 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 265 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 266                                  VIA_ACLINK_CTRL_RESET|\
 267                                  VIA_ACLINK_CTRL_PCM|\
 268                                  VIA_ACLINK_CTRL_VRA)
 269 #define VIA_FUNC_ENABLE         0x42
 270 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 271 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 272 #define  VIA_FUNC_RX2C_WRITE    0x20
 273 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 274 #define  VIA_FUNC_ENABLE_GAME   0x08
 275 #define  VIA_FUNC_ENABLE_FM     0x04
 276 #define  VIA_FUNC_ENABLE_MIDI   0x02
 277 #define  VIA_FUNC_ENABLE_SB     0x01
 278 #define VIA_PNP_CONTROL         0x43
 279 #define VIA_FM_NMI_CTRL         0x48
 280 #define VIA8233_VOLCHG_CTRL     0x48
 281 #define VIA8233_SPDIF_CTRL      0x49
 282 #define  VIA8233_SPDIF_DX3      0x08
 283 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 284 #define  VIA8233_SPDIF_SLOT_1011        0x00
 285 #define  VIA8233_SPDIF_SLOT_34          0x01
 286 #define  VIA8233_SPDIF_SLOT_78          0x02
 287 #define  VIA8233_SPDIF_SLOT_69          0x03
 288
 289 /*
 290  */
 291
 292 #define VIA_DXS_AUTO    0
 293 #define VIA_DXS_ENABLE  1
 294 #define VIA_DXS_DISABLE 2
 295 #define VIA_DXS_48K     3
 296 #define VIA_DXS_NO_VRA  4
 297 #define VIA_DXS_SRC     5
 298
 299
 300 /*
 301  */
 302
 303 typedef struct _snd_via82xx via82xx_t;
 304 typedef struct via_dev viadev_t;
 305
 306 /*
 307  * pcm stream
 308  */
 309
 310 struct snd_via_sg_table {
 311         unsigned int offset;
 312         unsigned int size;
 313 } ;
 314
 315 #define VIA_TABLE_SIZE  255
 316
 317 struct via_dev {
 318         unsigned int reg_offset;
 319         unsigned long port;
 320         int direction;  /* playback = 0, capture = 1 */
 321         snd_pcm_substream_t *substream;
 322         int running;
 323         unsigned int tbl_entries; /* # descriptors */
 324         struct snd_dma_buffer table;
 325         struct snd_via_sg_table *idx_table;
 326         /* for recovery from the unexpected pointer */
 327         unsigned int lastpos;
 328         unsigned int fragsize;
 329         unsigned int bufsize;
 330         unsigned int bufsize2;
 331 };
 332
 333
 334 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 335 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 336
 337 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 338
 339 struct via_rate_lock {
 340         spinlock_t lock;
 341         int rate;
 342         int used;
 343 };
 344
 345 struct _snd_via82xx {
 346         int irq;
 347
 348         unsigned long port;
 349         struct resource *mpu_res;
 350         int chip_type;
 351         unsigned char revision;
 352
 353         unsigned char old_legacy;
 354         unsigned char old_legacy_cfg;
 355 #ifdef CONFIG_PM
 356         unsigned char legacy_saved;
 357         unsigned char legacy_cfg_saved;
 358         unsigned char spdif_ctrl_saved;
 359         unsigned char capture_src_saved[2];
 360         unsigned int mpu_port_saved;
 361 #endif
 362
 363         unsigned char playback_volume[2]; /* for VIA8233/C/8235; default = 0 */
 364
 365         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 366
 367         struct pci_dev *pci;
 368         snd_card_t *card;
 369
 370         unsigned int num_devs;
 371         unsigned int playback_devno, multi_devno, capture_devno;
 372         viadev_t devs[VIA_MAX_DEVS];
 373         struct via_rate_lock rates[2]; /* playback and capture */
 374         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 375         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 376         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 377         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 378
 379         snd_pcm_t *pcms[2];
 380         snd_rawmidi_t *rmidi;
 381
 382         ac97_bus_t *ac97_bus;
 383         ac97_t *ac97;
 384         unsigned int ac97_clock;
 385         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 386
 387         spinlock_t reg_lock;
 388         snd_info_entry_t *proc_entry;
 389
 390 #ifdef SUPPORT_JOYSTICK
 391         struct gameport *gameport;
 392 #endif
 393 };
 394
 395 static struct pci_device_id snd_via82xx_ids[] = {
 396         { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },    /* 686A */
 397         { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },   /* VT8233 */
 398         { 0, }
 399 };
 400
 401 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 402
 403 /*
 404  */
 405
 406 /*
 407  * allocate and initialize the descriptor buffers
 408  * periods = number of periods
 409  * fragsize = period size in bytes
 410  */
 411 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 412                            struct pci_dev *pci,
 413                            unsigned int periods, unsigned int fragsize)
 414 {
 415         unsigned int i, idx, ofs, rest;
 416         via82xx_t *chip = snd_pcm_substream_chip(substream);
 417         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 418
 419         if (dev->table.area == NULL) {
 420                 /* the start of each lists must be aligned to 8 bytes,
 421                  * but the kernel pages are much bigger, so we don't care
 422                  */
 423                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 424                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 425                                         &dev->table) < 0)
 426                         return -ENOMEM;
 427         }
 428         if (! dev->idx_table) {
 429                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 430                 if (! dev->idx_table)
 431                         return -ENOMEM;
 432         }
 433
 434         /* fill the entries */
 435         idx = 0;
 436         ofs = 0;
 437         for (i = 0; i < periods; i++) {
 438                 rest = fragsize;
 439                 /* fill descriptors for a period.
 440                  * a period can be split to several descriptors if it's
 441                  * over page boundary.
 442                  */
 443                 do {
 444                         unsigned int r;
 445                         unsigned int flag;
 446
 447                         if (idx >= VIA_TABLE_SIZE) {
 448                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 449                                 return -EINVAL;
 450                         }
 451                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 452                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 453                         if (rest < r)
 454                                 r = rest;
 455                         rest -= r;
 456                         if (! rest) {
 457                                 if (i == periods - 1)
 458                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 459                                 else
 460                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 461                         } else
 462                                 flag = 0; /* period continues to the next */
 463                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 464                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 465                         dev->idx_table[idx].offset = ofs;
 466                         dev->idx_table[idx].size = r;
 467                         ofs += r;
 468                         idx++;
 469                 } while (rest > 0);
 470         }
 471         dev->tbl_entries = idx;
 472         dev->bufsize = periods * fragsize;
 473         dev->bufsize2 = dev->bufsize / 2;
 474         dev->fragsize = fragsize;
 475         return 0;
 476 }
 477
 478
 479 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 480                            struct pci_dev *pci)
 481 {
 482         if (dev->table.area) {
 483                 snd_dma_free_pages(&dev->table);
 484                 dev->table.area = NULL;
 485         }
 486         kfree(dev->idx_table);
 487         dev->idx_table = NULL;
 488         return 0;
 489 }
 490
 491 /*
 492  *  Basic I/O
 493  */
 494
 495 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
 496 {
 497         return inl(VIAREG(chip, AC97));
 498 }
 499
 500 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
 501 {
 502         outl(val, VIAREG(chip, AC97));
 503 }
 504
 505 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
 506 {
 507         unsigned int timeout = 1000;    /* 1ms */
 508         unsigned int val;
 509
 510         while (timeout-- > 0) {
 511                 udelay(1);
 512                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 513                         return val & 0xffff;
 514         }
 515         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
 516         return -EIO;
 517 }
 518
 519 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
 520 {
 521         unsigned int timeout = 1000;    /* 1ms */
 522         unsigned int val, val1;
 523         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 524                                          VIA_REG_AC97_SECONDARY_VALID;
 525
 526         while (timeout-- > 0) {
 527                 val = snd_via82xx_codec_xread(chip);
 528                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 529                 if (val1 == stat)
 530                         return val & 0xffff;
 531                 udelay(1);
 532         }
 533         return -EIO;
 534 }
 535
 536 static void snd_via82xx_codec_wait(ac97_t *ac97)
 537 {
 538         via82xx_t *chip = ac97->private_data;
 539         int err;
 540         err = snd_via82xx_codec_ready(chip, ac97->num);
 541         /* here we need to wait fairly for long time.. */
 542         msleep(500);
 543 }
 544
 545 static void snd_via82xx_codec_write(ac97_t *ac97,
 546                                     unsigned short reg,
 547                                     unsigned short val)
 548 {
 549         via82xx_t *chip = ac97->private_data;
 550         unsigned int xval;
 551
 552         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 553         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 554         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 555         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 556         snd_via82xx_codec_xwrite(chip, xval);
 557         snd_via82xx_codec_ready(chip, ac97->num);
 558 }
 559
 560 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 561 {
 562         via82xx_t *chip = ac97->private_data;
 563         unsigned int xval, val = 0xffff;
 564         int again = 0;
 565
 566         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 567         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 568         xval |= VIA_REG_AC97_READ;
 569         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 570         while (1) {
 571                 if (again++ > 3) {
 572                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 573                         return 0xffff;
 574                 }
 575                 snd_via82xx_codec_xwrite(chip, xval);
 576                 udelay (20);
 577                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 578                         udelay(25);
 579                         val = snd_via82xx_codec_xread(chip);
 580                         break;
 581                 }
 582         }
 583         return val & 0xffff;
 584 }
 585
 586 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 587 {
 588         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 589              VIADEV_REG(viadev, OFFSET_CONTROL));
 590         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 591         udelay(50);
 592         /* disable interrupts */
 593         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 594         /* clear interrupts */
 595         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 596         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 597         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 598         viadev->lastpos = 0;
 599 }
 600
 601
 602 /*
 603  *  Interrupt handler
 604  */
 605
 606 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 607 {
 608         via82xx_t *chip = dev_id;
 609         unsigned int status;
 610         unsigned int i;
 611
 612         status = inl(VIAREG(chip, SGD_SHADOW));
 613         if (! (status & chip->intr_mask)) {
 614                 if (chip->rmidi)
 615                         /* check mpu401 interrupt */
 616                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 617                 return IRQ_NONE;
 618         }
 619
 620         /* check status for each stream */
 621         spin_lock(&chip->reg_lock);
 622         for (i = 0; i < chip->num_devs; i++) {
 623                 viadev_t *viadev = &chip->devs[i];
 624                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 625                 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
 626                 if (! c_status)
 627                         continue;
 628                 if (viadev->substream && viadev->running) {
 629                         spin_unlock(&chip->reg_lock);
 630                         snd_pcm_period_elapsed(viadev->substream);
 631                         spin_lock(&chip->reg_lock);
 632                 }
 633                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 634         }
 635         spin_unlock(&chip->reg_lock);
 636         return IRQ_HANDLED;
 637 }
 638
 639 /*
 640  *  PCM callbacks
 641  */
 642
 643 /*
 644  * trigger callback
 645  */
 646 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 647 {
 648         via82xx_t *chip = snd_pcm_substream_chip(substream);
 649         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 650         unsigned char val;
 651
 652         if (chip->chip_type != TYPE_VIA686)
 653                 val = VIA_REG_CTRL_INT;
 654         else
 655                 val = 0;
 656         switch (cmd) {
 657         case SNDRV_PCM_TRIGGER_START:
 658         case SNDRV_PCM_TRIGGER_RESUME:
 659                 val |= VIA_REG_CTRL_START;
 660                 viadev->running = 1;
 661                 break;
 662         case SNDRV_PCM_TRIGGER_STOP:
 663         case SNDRV_PCM_TRIGGER_SUSPEND:
 664                 val = VIA_REG_CTRL_TERMINATE;
 665                 viadev->running = 0;
 666                 break;
 667         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 668                 val |= VIA_REG_CTRL_PAUSE;
 669                 viadev->running = 0;
 670                 break;
 671         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 672                 viadev->running = 1;
 673                 break;
 674         default:
 675                 return -EINVAL;
 676         }
 677         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 678         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 679                 snd_via82xx_channel_reset(chip, viadev);
 680         return 0;
 681 }
 682
 683
 684 /*
 685  * pointer callbacks
 686  */
 687
 688 /*
 689  * calculate the linear position at the given sg-buffer index and the rest count
 690  */
 691
 692 #define check_invalid_pos(viadev,pos) \
 693         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 694
 695 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 696 {
 697         unsigned int size, base, res;
 698
 699         size = viadev->idx_table[idx].size;
 700         base = viadev->idx_table[idx].offset;
 701         res = base + size - count;
 702
 703         /* check the validity of the calculated position */
 704         if (size < count) {
 705                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 706                 res = viadev->lastpos;
 707         } else {
 708                 if (! count) {
 709                         /* Some mobos report count = 0 on the DMA boundary,
 710                          * i.e. count = size indeed.
 711                          * Let's check whether this step is above the expected size.
 712                          */
 713                         int delta = res - viadev->lastpos;
 714                         if (delta < 0)
 715                                 delta += viadev->bufsize;
 716                         if ((unsigned int)delta > viadev->fragsize)
 717                                 res = base;
 718                 }
 719                 if (check_invalid_pos(viadev, res)) {
 720 #ifdef POINTER_DEBUG
 721                         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);
 722 #endif
 723                         /* count register returns full size when end of buffer is reached */
 724                         res = base + size;
 725                         if (check_invalid_pos(viadev, res)) {
 726                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 727                                 res = viadev->lastpos;
 728                         }
 729                 }
 730         }
 731         viadev->lastpos = res; /* remember the last position */
 732         if (res >= viadev->bufsize)
 733                 res -= viadev->bufsize;
 734         return res;
 735 }
 736
 737 /*
 738  * get the current pointer on via686
 739  */
 740 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 741 {
 742         via82xx_t *chip = snd_pcm_substream_chip(substream);
 743         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 744         unsigned int idx, ptr, count, res;
 745
 746         snd_assert(viadev->tbl_entries, return 0);
 747         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 748                 return 0;
 749
 750         spin_lock(&chip->reg_lock);
 751         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 752         /* The via686a does not have the current index register,
 753          * so we need to calculate the index from CURR_PTR.
 754          */
 755         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 756         if (ptr <= (unsigned int)viadev->table.addr)
 757                 idx = 0;
 758         else /* CURR_PTR holds the address + 8 */
 759                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 760         res = calc_linear_pos(viadev, idx, count);
 761         spin_unlock(&chip->reg_lock);
 762
 763         return bytes_to_frames(substream->runtime, res);
 764 }
 765
 766 /*
 767  * get the current pointer on via823x
 768  */
 769 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 770 {
 771         via82xx_t *chip = snd_pcm_substream_chip(substream);
 772         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 773         unsigned int idx, count, res;
 774         int timeout = 5000;
 775
 776         snd_assert(viadev->tbl_entries, return 0);
 777         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 778                 return 0;
 779         spin_lock(&chip->reg_lock);
 780         do {
 781                 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 782                 /* some mobos read 0 count */
 783                 if ((count & 0xffffff) || ! viadev->running)
 784                         break;
 785         } while (--timeout);
 786         if (! timeout)
 787                 snd_printd(KERN_ERR "zero position is read\n");
 788         idx = count >> 24;
 789         if (idx >= viadev->tbl_entries) {
 790 #ifdef POINTER_DEBUG
 791                 printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 792 #endif
 793                 res = viadev->lastpos;
 794         } else {
 795                 count &= 0xffffff;
 796                 res = calc_linear_pos(viadev, idx, count);
 797         }
 798         spin_unlock(&chip->reg_lock);
 799
 800         return bytes_to_frames(substream->runtime, res);
 801 }
 802
 803
 804 /*
 805  * hw_params callback:
 806  * allocate the buffer and build up the buffer description table
 807  */
 808 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 809                                  snd_pcm_hw_params_t * hw_params)
 810 {
 811         via82xx_t *chip = snd_pcm_substream_chip(substream);
 812         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 813         int err;
 814
 815         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 816         if (err < 0)
 817                 return err;
 818         err = build_via_table(viadev, substream, chip->pci,
 819                               params_periods(hw_params),
 820                               params_period_bytes(hw_params));
 821         if (err < 0)
 822                 return err;
 823
 824         return 0;
 825 }
 826
 827 /*
 828  * hw_free callback:
 829  * clean up the buffer description table and release the buffer
 830  */
 831 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 832 {
 833         via82xx_t *chip = snd_pcm_substream_chip(substream);
 834         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 835
 836         clean_via_table(viadev, substream, chip->pci);
 837         snd_pcm_lib_free_pages(substream);
 838         return 0;
 839 }
 840
 841
 842 /*
 843  * set up the table pointer
 844  */
 845 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 846 {
 847         snd_via82xx_codec_ready(chip, 0);
 848         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 849         udelay(20);
 850         snd_via82xx_codec_ready(chip, 0);
 851 }
 852
 853 /*
 854  * prepare callback for playback and capture on via686
 855  */
 856 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 857 {
 858         snd_via82xx_channel_reset(chip, viadev);
 859         /* this must be set after channel_reset */
 860         snd_via82xx_set_table_ptr(chip, viadev);
 861         outb(VIA_REG_TYPE_AUTOSTART |
 862              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 863              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 864              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 865              VIA_REG_TYPE_INT_EOL |
 866              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 867 }
 868
 869 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 870 {
 871         via82xx_t *chip = snd_pcm_substream_chip(substream);
 872         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 873         snd_pcm_runtime_t *runtime = substream->runtime;
 874
 875         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 876         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 877         via686_setup_format(chip, viadev, runtime);
 878         return 0;
 879 }
 880
 881 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 882 {
 883         via82xx_t *chip = snd_pcm_substream_chip(substream);
 884         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 885         snd_pcm_runtime_t *runtime = substream->runtime;
 886
 887         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 888         via686_setup_format(chip, viadev, runtime);
 889         return 0;
 890 }
 891
 892 /*
 893  * lock the current rate
 894  */
 895 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 896 {
 897         int changed = 0;
 898
 899         spin_lock_irq(&rec->lock);
 900         if (rec->rate != rate) {
 901                 if (rec->rate && rec->used > 1) /* already set */
 902                         changed = -EINVAL;
 903                 else {
 904                         rec->rate = rate;
 905                         changed = 1;
 906                 }
 907         }
 908         spin_unlock_irq(&rec->lock);
 909         return changed;
 910 }
 911
 912 /*
 913  * prepare callback for DSX playback on via823x
 914  */
 915 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
 916 {
 917         via82xx_t *chip = snd_pcm_substream_chip(substream);
 918         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 919         snd_pcm_runtime_t *runtime = substream->runtime;
 920         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
 921         int rate_changed;
 922         u32 rbits;
 923
 924         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
 925                 return rate_changed;
 926         if (rate_changed)
 927                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
 928                                   chip->no_vra ? 48000 : runtime->rate);
 929         if (chip->spdif_on && viadev->reg_offset == 0x30)
 930                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 931
 932         if (runtime->rate == 48000)
 933                 rbits = 0xfffff;
 934         else
 935                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
 936         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
 937         snd_via82xx_channel_reset(chip, viadev);
 938         snd_via82xx_set_table_ptr(chip, viadev);
 939         outb(chip->playback_volume[0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
 940         outb(chip->playback_volume[1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
 941         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 942              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
 943              rbits | /* rate */
 944              0xff000000,    /* STOP index is never reached */
 945              VIADEV_REG(viadev, OFFSET_STOP_IDX));
 946         udelay(20);
 947         snd_via82xx_codec_ready(chip, 0);
 948         return 0;
 949 }
 950
 951 /*
 952  * prepare callback for multi-channel playback on via823x
 953  */
 954 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
 955 {
 956         via82xx_t *chip = snd_pcm_substream_chip(substream);
 957         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 958         snd_pcm_runtime_t *runtime = substream->runtime;
 959         unsigned int slots;
 960         int fmt;
 961
 962         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
 963                 return -EINVAL;
 964         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 965         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
 966         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
 967         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 968         snd_via82xx_channel_reset(chip, viadev);
 969         snd_via82xx_set_table_ptr(chip, viadev);
 970
 971         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
 972         fmt |= runtime->channels << 4;
 973         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
 974 #if 0
 975         if (chip->revision == VIA_REV_8233A)
 976                 slots = 0;
 977         else
 978 #endif
 979         {
 980                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
 981                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
 982                 switch (runtime->channels) {
 983                 case 1: slots = (1<<0) | (1<<4); break;
 984                 case 2: slots = (1<<0) | (2<<4); break;
 985                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
 986                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
 987                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
 988                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
 989                 default: slots = 0; break;
 990                 }
 991         }
 992         /* STOP index is never reached */
 993         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
 994         udelay(20);
 995         snd_via82xx_codec_ready(chip, 0);
 996         return 0;
 997 }
 998
 999 /*
1000  * prepare callback for capture on via823x
1001  */
1002 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1003 {
1004         via82xx_t *chip = snd_pcm_substream_chip(substream);
1005         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1006         snd_pcm_runtime_t *runtime = substream->runtime;
1007
1008         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1009                 return -EINVAL;
1010         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1011         snd_via82xx_channel_reset(chip, viadev);
1012         snd_via82xx_set_table_ptr(chip, viadev);
1013         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1014         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1015              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1016              0xff000000,    /* STOP index is never reached */
1017              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1018         udelay(20);
1019         snd_via82xx_codec_ready(chip, 0);
1020         return 0;
1021 }
1022
1023
1024 /*
1025  * pcm hardware definition, identical for both playback and capture
1026  */
1027 static snd_pcm_hardware_t snd_via82xx_hw =
1028 {
1029         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1030                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1031                                  SNDRV_PCM_INFO_MMAP_VALID |
1032                                  /* SNDRV_PCM_INFO_RESUME | */
1033                                  SNDRV_PCM_INFO_PAUSE),
1034         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1035         .rates =                SNDRV_PCM_RATE_48000,
1036         .rate_min =             48000,
1037         .rate_max =             48000,
1038         .channels_min =         1,
1039         .channels_max =         2,
1040         .buffer_bytes_max =     128 * 1024,
1041         .period_bytes_min =     32,
1042         .period_bytes_max =     128 * 1024,
1043         .periods_min =          2,
1044         .periods_max =          VIA_TABLE_SIZE / 2,
1045         .fifo_size =            0,
1046 };
1047
1048
1049 /*
1050  * open callback skeleton
1051  */
1052 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1053 {
1054         snd_pcm_runtime_t *runtime = substream->runtime;
1055         int err;
1056         struct via_rate_lock *ratep;
1057
1058         runtime->hw = snd_via82xx_hw;
1059
1060         /* set the hw rate condition */
1061         ratep = &chip->rates[viadev->direction];
1062         spin_lock_irq(&ratep->lock);
1063         ratep->used++;
1064         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1065                 /* DXS#3 and spdif is on */
1066                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1067                 snd_pcm_limit_hw_rates(runtime);
1068         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1069                 /* fixed DXS playback rate */
1070                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1071                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1072         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1073                 /* use full SRC capabilities of DXS */
1074                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1075                                      SNDRV_PCM_RATE_8000_48000);
1076                 runtime->hw.rate_min = 8000;
1077                 runtime->hw.rate_max = 48000;
1078         } else if (! ratep->rate) {
1079                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1080                 runtime->hw.rates = chip->ac97->rates[idx];
1081                 snd_pcm_limit_hw_rates(runtime);
1082         } else {
1083                 /* a fixed rate */
1084                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1085                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1086         }
1087         spin_unlock_irq(&ratep->lock);
1088
1089         /* we may remove following constaint when we modify table entries
1090            in interrupt */
1091         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1092                 return err;
1093
1094         runtime->private_data = viadev;
1095         viadev->substream = substream;
1096
1097         return 0;
1098 }
1099
1100
1101 /*
1102  * open callback for playback on via686 and via823x DSX
1103  */
1104 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1105 {
1106         via82xx_t *chip = snd_pcm_substream_chip(substream);
1107         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1108         int err;
1109
1110         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1111                 return err;
1112         return 0;
1113 }
1114
1115 /*
1116  * open callback for playback on via823x multi-channel
1117  */
1118 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1119 {
1120         via82xx_t *chip = snd_pcm_substream_chip(substream);
1121         viadev_t *viadev = &chip->devs[chip->multi_devno];
1122         int err;
1123         /* channels constraint for VIA8233A
1124          * 3 and 5 channels are not supported
1125          */
1126         static unsigned int channels[] = {
1127                 1, 2, 4, 6
1128         };
1129         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1130                 .count = ARRAY_SIZE(channels),
1131                 .list = channels,
1132                 .mask = 0,
1133         };
1134
1135         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1136                 return err;
1137         substream->runtime->hw.channels_max = 6;
1138         if (chip->revision == VIA_REV_8233A)
1139                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1140         return 0;
1141 }
1142
1143 /*
1144  * open callback for capture on via686 and via823x
1145  */
1146 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1147 {
1148         via82xx_t *chip = snd_pcm_substream_chip(substream);
1149         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1150
1151         return snd_via82xx_pcm_open(chip, viadev, substream);
1152 }
1153
1154 /*
1155  * close callback
1156  */
1157 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1158 {
1159         via82xx_t *chip = snd_pcm_substream_chip(substream);
1160         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1161         struct via_rate_lock *ratep;
1162
1163         /* release the rate lock */
1164         ratep = &chip->rates[viadev->direction];
1165         spin_lock_irq(&ratep->lock);
1166         ratep->used--;
1167         if (! ratep->used)
1168                 ratep->rate = 0;
1169         spin_unlock_irq(&ratep->lock);
1170
1171         viadev->substream = NULL;
1172         return 0;
1173 }
1174
1175
1176 /* via686 playback callbacks */
1177 static snd_pcm_ops_t snd_via686_playback_ops = {
1178         .open =         snd_via82xx_playback_open,
1179         .close =        snd_via82xx_pcm_close,
1180         .ioctl =        snd_pcm_lib_ioctl,
1181         .hw_params =    snd_via82xx_hw_params,
1182         .hw_free =      snd_via82xx_hw_free,
1183         .prepare =      snd_via686_playback_prepare,
1184         .trigger =      snd_via82xx_pcm_trigger,
1185         .pointer =      snd_via686_pcm_pointer,
1186         .page =         snd_pcm_sgbuf_ops_page,
1187 };
1188
1189 /* via686 capture callbacks */
1190 static snd_pcm_ops_t snd_via686_capture_ops = {
1191         .open =         snd_via82xx_capture_open,
1192         .close =        snd_via82xx_pcm_close,
1193         .ioctl =        snd_pcm_lib_ioctl,
1194         .hw_params =    snd_via82xx_hw_params,
1195         .hw_free =      snd_via82xx_hw_free,
1196         .prepare =      snd_via686_capture_prepare,
1197         .trigger =      snd_via82xx_pcm_trigger,
1198         .pointer =      snd_via686_pcm_pointer,
1199         .page =         snd_pcm_sgbuf_ops_page,
1200 };
1201
1202 /* via823x DSX playback callbacks */
1203 static snd_pcm_ops_t snd_via8233_playback_ops = {
1204         .open =         snd_via82xx_playback_open,
1205         .close =        snd_via82xx_pcm_close,
1206         .ioctl =        snd_pcm_lib_ioctl,
1207         .hw_params =    snd_via82xx_hw_params,
1208         .hw_free =      snd_via82xx_hw_free,
1209         .prepare =      snd_via8233_playback_prepare,
1210         .trigger =      snd_via82xx_pcm_trigger,
1211         .pointer =      snd_via8233_pcm_pointer,
1212         .page =         snd_pcm_sgbuf_ops_page,
1213 };
1214
1215 /* via823x multi-channel playback callbacks */
1216 static snd_pcm_ops_t snd_via8233_multi_ops = {
1217         .open =         snd_via8233_multi_open,
1218         .close =        snd_via82xx_pcm_close,
1219         .ioctl =        snd_pcm_lib_ioctl,
1220         .hw_params =    snd_via82xx_hw_params,
1221         .hw_free =      snd_via82xx_hw_free,
1222         .prepare =      snd_via8233_multi_prepare,
1223         .trigger =      snd_via82xx_pcm_trigger,
1224         .pointer =      snd_via8233_pcm_pointer,
1225         .page =         snd_pcm_sgbuf_ops_page,
1226 };
1227
1228 /* via823x capture callbacks */
1229 static snd_pcm_ops_t snd_via8233_capture_ops = {
1230         .open =         snd_via82xx_capture_open,
1231         .close =        snd_via82xx_pcm_close,
1232         .ioctl =        snd_pcm_lib_ioctl,
1233         .hw_params =    snd_via82xx_hw_params,
1234         .hw_free =      snd_via82xx_hw_free,
1235         .prepare =      snd_via8233_capture_prepare,
1236         .trigger =      snd_via82xx_pcm_trigger,
1237         .pointer =      snd_via8233_pcm_pointer,
1238         .page =         snd_pcm_sgbuf_ops_page,
1239 };
1240
1241
1242 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
1243 {
1244         chip->devs[idx].reg_offset = reg_offset;
1245         chip->devs[idx].direction = direction;
1246         chip->devs[idx].port = chip->port + reg_offset;
1247 }
1248
1249 /*
1250  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1251  */
1252 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1253 {
1254         snd_pcm_t *pcm;
1255         int i, err;
1256
1257         chip->playback_devno = 0;       /* x 4 */
1258         chip->multi_devno = 4;          /* x 1 */
1259         chip->capture_devno = 5;        /* x 2 */
1260         chip->num_devs = 7;
1261         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1262
1263         /* PCM #0:  4 DSX playbacks and 1 capture */
1264         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1265         if (err < 0)
1266                 return err;
1267         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1268         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1269         pcm->private_data = chip;
1270         strcpy(pcm->name, chip->card->shortname);
1271         chip->pcms[0] = pcm;
1272         /* set up playbacks */
1273         for (i = 0; i < 4; i++)
1274                 init_viadev(chip, i, 0x10 * i, 0);
1275         /* capture */
1276         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1277
1278         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1279                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1280                 return err;
1281
1282         /* PCM #1:  multi-channel playback and 2nd capture */
1283         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1284         if (err < 0)
1285                 return err;
1286         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1287         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1288         pcm->private_data = chip;
1289         strcpy(pcm->name, chip->card->shortname);
1290         chip->pcms[1] = pcm;
1291         /* set up playback */
1292         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1293         /* set up capture */
1294         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 1);
1295
1296         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1297                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1298                 return err;
1299
1300         return 0;
1301 }
1302
1303 /*
1304  * create pcm instances for VIA8233A
1305  */
1306 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1307 {
1308         snd_pcm_t *pcm;
1309         int err;
1310
1311         chip->multi_devno = 0;
1312         chip->playback_devno = 1;
1313         chip->capture_devno = 2;
1314         chip->num_devs = 3;
1315         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1316
1317         /* PCM #0:  multi-channel playback and capture */
1318         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1319         if (err < 0)
1320                 return err;
1321         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1322         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1323         pcm->private_data = chip;
1324         strcpy(pcm->name, chip->card->shortname);
1325         chip->pcms[0] = pcm;
1326         /* set up playback */
1327         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1328         /* capture */
1329         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1330
1331         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1332                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1333                 return err;
1334
1335         /* SPDIF supported? */
1336         if (! ac97_can_spdif(chip->ac97))
1337                 return 0;
1338
1339         /* PCM #1:  DXS3 playback (for spdif) */
1340         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1341         if (err < 0)
1342                 return err;
1343         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1344         pcm->private_data = chip;
1345         strcpy(pcm->name, chip->card->shortname);
1346         chip->pcms[1] = pcm;
1347         /* set up playback */
1348         init_viadev(chip, chip->playback_devno, 0x30, 0);
1349
1350         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1351                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1352                 return err;
1353
1354         return 0;
1355 }
1356
1357 /*
1358  * create a pcm instance for via686a/b
1359  */
1360 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1361 {
1362         snd_pcm_t *pcm;
1363         int err;
1364
1365         chip->playback_devno = 0;
1366         chip->capture_devno = 1;
1367         chip->num_devs = 2;
1368         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1369
1370         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1371         if (err < 0)
1372                 return err;
1373         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1374         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1375         pcm->private_data = chip;
1376         strcpy(pcm->name, chip->card->shortname);
1377         chip->pcms[0] = pcm;
1378         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0);
1379         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 1);
1380
1381         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1382                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1383                 return err;
1384
1385         return 0;
1386 }
1387
1388
1389 /*
1390  *  Mixer part
1391  */
1392
1393 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1394 {
1395         /* formerly they were "Line" and "Mic", but it looks like that they
1396          * have nothing to do with the actual physical connections...
1397          */
1398         static char *texts[2] = {
1399                 "Input1", "Input2"
1400         };
1401         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1402         uinfo->count = 1;
1403         uinfo->value.enumerated.items = 2;
1404         if (uinfo->value.enumerated.item >= 2)
1405                 uinfo->value.enumerated.item = 1;
1406         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1407         return 0;
1408 }
1409
1410 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1411 {
1412         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1413         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1414         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1415         return 0;
1416 }
1417
1418 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1419 {
1420         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1421         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1422         u8 val, oval;
1423
1424         spin_lock_irq(&chip->reg_lock);
1425         oval = inb(port);
1426         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1427         if (ucontrol->value.enumerated.item[0])
1428                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1429         if (val != oval)
1430                 outb(val, port);
1431         spin_unlock_irq(&chip->reg_lock);
1432         return val != oval;
1433 }
1434
1435 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1436         .name = "Input Source Select",
1437         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1438         .info = snd_via8233_capture_source_info,
1439         .get = snd_via8233_capture_source_get,
1440         .put = snd_via8233_capture_source_put,
1441 };
1442
1443 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1444 {
1445         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1446         uinfo->count = 1;
1447         uinfo->value.integer.min = 0;
1448         uinfo->value.integer.max = 1;
1449         return 0;
1450 }
1451
1452 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1453 {
1454         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1455         u8 val;
1456
1457         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1458         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1459         return 0;
1460 }
1461
1462 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1463 {
1464         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1465         u8 val, oval;
1466
1467         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1468         val = oval & ~VIA8233_SPDIF_DX3;
1469         if (ucontrol->value.integer.value[0])
1470                 val |= VIA8233_SPDIF_DX3;
1471         /* save the spdif flag for rate filtering */
1472         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1473         if (val != oval) {
1474                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1475                 return 1;
1476         }
1477         return 0;
1478 }
1479
1480 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1481         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1482         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1483         .info = snd_via8233_dxs3_spdif_info,
1484         .get = snd_via8233_dxs3_spdif_get,
1485         .put = snd_via8233_dxs3_spdif_put,
1486 };
1487
1488 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1489 {
1490         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1491         uinfo->count = 2;
1492         uinfo->value.integer.min = 0;
1493         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1494         return 0;
1495 }
1496
1497 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1498 {
1499         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1500         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[0];
1501         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[1];
1502         return 0;
1503 }
1504
1505 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1506 {
1507         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1508         unsigned int idx;
1509         unsigned char val;
1510         int i, change = 0;
1511
1512         for (i = 0; i < 2; i++) {
1513                 val = ucontrol->value.integer.value[i];
1514                 if (val > VIA_DXS_MAX_VOLUME)
1515                         val = VIA_DXS_MAX_VOLUME;
1516                 val = VIA_DXS_MAX_VOLUME - val;
1517                 if (val != chip->playback_volume[i]) {
1518                         change = 1;
1519                         chip->playback_volume[i] = val;
1520                         for (idx = 0; idx < 4; idx++) {
1521                                 unsigned long port = chip->port + 0x10 * idx;
1522                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1523                         }
1524                 }
1525         }
1526         return change;
1527 }
1528
1529 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1530         .name = "PCM Playback Volume",
1531         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1532         .info = snd_via8233_dxs_volume_info,
1533         .get = snd_via8233_dxs_volume_get,
1534         .put = snd_via8233_dxs_volume_put,
1535 };
1536
1537 /*
1538  */
1539
1540 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1541 {
1542         via82xx_t *chip = bus->private_data;
1543         chip->ac97_bus = NULL;
1544 }
1545
1546 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1547 {
1548         via82xx_t *chip = ac97->private_data;
1549         chip->ac97 = NULL;
1550 }
1551
1552 static struct ac97_quirk ac97_quirks[] = {
1553         {
1554                 .subvendor = 0x1106,
1555                 .subdevice = 0x4161,
1556                 .codec_id = 0x56494161, /* VT1612A */
1557                 .name = "Soltek SL-75DRV5",
1558                 .type = AC97_TUNE_NONE
1559         },
1560         {       /* FIXME: which codec? */
1561                 .subvendor = 0x1106,
1562                 .subdevice = 0x4161,
1563                 .name = "ASRock K7VT2",
1564                 .type = AC97_TUNE_HP_ONLY
1565         },
1566         {
1567                 .subvendor = 0x1019,
1568                 .subdevice = 0x0a81,
1569                 .name = "ECS K7VTA3",
1570                 .type = AC97_TUNE_HP_ONLY
1571         },
1572         {
1573                 .subvendor = 0x1019,
1574                 .subdevice = 0x0a85,
1575                 .name = "ECS L7VMM2",
1576                 .type = AC97_TUNE_HP_ONLY
1577         },
1578         {
1579                 .subvendor = 0x1849,
1580                 .subdevice = 0x3059,
1581                 .name = "ASRock K7VM2",
1582                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1583         },
1584         {
1585                 .subvendor = 0x14cd,
1586                 .subdevice = 0x7002,
1587                 .name = "Unknown",
1588                 .type = AC97_TUNE_ALC_JACK
1589         },
1590         {
1591                 .subvendor = 0x1071,
1592                 .subdevice = 0x8590,
1593                 .name = "Mitac Mobo",
1594                 .type = AC97_TUNE_ALC_JACK
1595         },
1596         {
1597                 .subvendor = 0x161f,
1598                 .subdevice = 0x202b,
1599                 .name = "Arima Notebook",
1600                 .type = AC97_TUNE_HP_ONLY,
1601         },
1602         { } /* terminator */
1603 };
1604
1605 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_override)
1606 {
1607         ac97_template_t ac97;
1608         int err;
1609         static ac97_bus_ops_t ops = {
1610                 .write = snd_via82xx_codec_write,
1611                 .read = snd_via82xx_codec_read,
1612                 .wait = snd_via82xx_codec_wait,
1613         };
1614
1615         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1616                 return err;
1617         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1618         chip->ac97_bus->clock = chip->ac97_clock;
1619         chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
1620
1621         memset(&ac97, 0, sizeof(ac97));
1622         ac97.private_data = chip;
1623         ac97.private_free = snd_via82xx_mixer_free_ac97;
1624         ac97.pci = chip->pci;
1625         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1626                 return err;
1627
1628         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1629
1630         if (chip->chip_type != TYPE_VIA686) {
1631                 /* use slot 10/11 */
1632                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1633         }
1634
1635         return 0;
1636 }
1637
1638 #ifdef SUPPORT_JOYSTICK
1639 #define JOYSTICK_ADDR   0x200
1640 static int __devinit snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1641 {
1642         struct gameport *gp;
1643         struct resource *r;
1644
1645         if (!joystick[dev])
1646                 return -ENODEV;
1647
1648         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1649         if (!r) {
1650                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n", JOYSTICK_ADDR);
1651                 return -EBUSY;
1652         }
1653
1654         chip->gameport = gp = gameport_allocate_port();
1655         if (!gp) {
1656                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1657                 release_resource(r);
1658                 kfree_nocheck(r);
1659                 return -ENOMEM;
1660         }
1661
1662         gameport_set_name(gp, "VIA686 Gameport");
1663         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1664         gameport_set_dev_parent(gp, &chip->pci->dev);
1665         gp->io = JOYSTICK_ADDR;
1666         gameport_set_port_data(gp, r);
1667
1668         /* Enable legacy joystick port */
1669         *legacy |= VIA_FUNC_ENABLE_GAME;
1670         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1671
1672         gameport_register_port(chip->gameport);
1673
1674         return 0;
1675 }
1676
1677 static void snd_via686_free_gameport(via82xx_t *chip)
1678 {
1679         if (chip->gameport) {
1680                 struct resource *r = gameport_get_port_data(chip->gameport);
1681
1682                 gameport_unregister_port(chip->gameport);
1683                 chip->gameport = NULL;
1684                 release_resource(r);
1685                 kfree_nocheck(r);
1686         }
1687 }
1688 #else
1689 static inline int snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1690 {
1691         return -ENOSYS;
1692 }
1693 static inline void snd_via686_free_gameport(via82xx_t *chip) { }
1694 #endif
1695
1696
1697 /*
1698  *
1699  */
1700
1701 static int __devinit snd_via8233_init_misc(via82xx_t *chip, int dev)
1702 {
1703         int i, err, caps;
1704         unsigned char val;
1705
1706         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1707         for (i = 0; i < caps; i++) {
1708                 snd_via8233_capture_source.index = i;
1709                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1710                 if (err < 0)
1711                         return err;
1712         }
1713         if (ac97_can_spdif(chip->ac97)) {
1714                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1715                 if (err < 0)
1716                         return err;
1717         }
1718         if (chip->chip_type != TYPE_VIA8233A) {
1719                 /* when no h/w PCM volume control is found, use DXS volume control
1720                  * as the PCM vol control
1721                  */
1722                 snd_ctl_elem_id_t sid;
1723                 memset(&sid, 0, sizeof(sid));
1724                 strcpy(sid.name, "PCM Playback Volume");
1725                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1726                 if (! snd_ctl_find_id(chip->card, &sid)) {
1727                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1728                         if (err < 0)
1729                                 return err;
1730                 }
1731         }
1732
1733         /* select spdif data slot 10/11 */
1734         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1735         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1736         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1737         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1738
1739         return 0;
1740 }
1741
1742 static int __devinit snd_via686_init_misc(via82xx_t *chip, int dev)
1743 {
1744         unsigned char legacy, legacy_cfg;
1745         int rev_h = 0;
1746
1747         legacy = chip->old_legacy;
1748         legacy_cfg = chip->old_legacy_cfg;
1749         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1750         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1751         if (chip->revision >= VIA_REV_686_H) {
1752                 rev_h = 1;
1753                 if (mpu_port[dev] >= 0x200) {   /* force MIDI */
1754                         mpu_port[dev] &= 0xfffc;
1755                         pci_write_config_dword(chip->pci, 0x18, mpu_port[dev] | 0x01);
1756 #ifdef CONFIG_PM
1757                         chip->mpu_port_saved = mpu_port[dev];
1758 #endif
1759                 } else {
1760                         mpu_port[dev] = pci_resource_start(chip->pci, 2);
1761                 }
1762         } else {
1763                 switch (mpu_port[dev]) {        /* force MIDI */
1764                 case 0x300:
1765                 case 0x310:
1766                 case 0x320:
1767                 case 0x330:
1768                         legacy_cfg &= ~(3 << 2);
1769                         legacy_cfg |= (mpu_port[dev] & 0x0030) >> 2;
1770                         break;
1771                 default:                        /* no, use BIOS settings */
1772                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1773                                 mpu_port[dev] = 0x300 + ((legacy_cfg & 0x000c) << 2);
1774                         break;
1775                 }
1776         }
1777         if (mpu_port[dev] >= 0x200 &&
1778             (chip->mpu_res = request_region(mpu_port[dev], 2, "VIA82xx MPU401")) != NULL) {
1779                 if (rev_h)
1780                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1781                 legacy |= VIA_FUNC_ENABLE_MIDI;
1782         } else {
1783                 if (rev_h)
1784                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1785                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1786                 mpu_port[dev] = 0;
1787         }
1788
1789         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1790         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1791         if (chip->mpu_res) {
1792                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1793                                         mpu_port[dev], 1,
1794                                         chip->irq, 0, &chip->rmidi) < 0) {
1795                         printk(KERN_WARNING "unable to initialize MPU-401 at 0x%lx, skipping\n", mpu_port[dev]);
1796                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1797                 } else {
1798                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1799                 }
1800                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1801         }
1802
1803         snd_via686_create_gameport(chip, dev, &legacy);
1804
1805 #ifdef CONFIG_PM
1806         chip->legacy_saved = legacy;
1807         chip->legacy_cfg_saved = legacy_cfg;
1808 #endif
1809
1810         return 0;
1811 }
1812
1813
1814 /*
1815  * proc interface
1816  */
1817 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1818 {
1819         via82xx_t *chip = entry->private_data;
1820         int i;
1821
1822         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1823         for (i = 0; i < 0xa0; i += 4) {
1824                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1825         }
1826 }
1827
1828 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1829 {
1830         snd_info_entry_t *entry;
1831
1832         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1833                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1834 }
1835
1836 /*
1837  *
1838  */
1839
1840 static int snd_via82xx_chip_init(via82xx_t *chip)
1841 {
1842         unsigned int val;
1843         unsigned long end_time;
1844         unsigned char pval;
1845
1846 #if 0 /* broken on K7M? */
1847         if (chip->chip_type == TYPE_VIA686)
1848                 /* disable all legacy ports */
1849                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1850 #endif
1851         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1852         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1853                 /* deassert ACLink reset, force SYNC */
1854                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1855                                       VIA_ACLINK_CTRL_ENABLE |
1856                                       VIA_ACLINK_CTRL_RESET |
1857                                       VIA_ACLINK_CTRL_SYNC);
1858                 udelay(100);
1859 #if 1 /* FIXME: should we do full reset here for all chip models? */
1860                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
1861                 udelay(100);
1862 #else
1863                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
1864                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1865                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
1866                 udelay(2);
1867 #endif
1868                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1869                 /* note - FM data out has trouble with non VRA codecs !! */
1870                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1871                 udelay(100);
1872         }
1873
1874         /* Make sure VRA is enabled, in case we didn't do a
1875          * complete codec reset, above */
1876         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
1877         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
1878                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1879                 /* note - FM data out has trouble with non VRA codecs !! */
1880                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1881                 udelay(100);
1882         }
1883
1884         /* wait until codec ready */
1885         end_time = jiffies + msecs_to_jiffies(750);
1886         do {
1887                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1888                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
1889                         break;
1890                 set_current_state(TASK_UNINTERRUPTIBLE);
1891                 schedule_timeout(1);
1892         } while (time_before(jiffies, end_time));
1893
1894         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1895                 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
1896
1897 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
1898         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1899                                  VIA_REG_AC97_SECONDARY_VALID |
1900                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1901         end_time = jiffies + msecs_to_jiffies(750);
1902         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1903                                  VIA_REG_AC97_SECONDARY_VALID |
1904                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1905         do {
1906                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1907                         chip->ac97_secondary = 1;
1908                         goto __ac97_ok2;
1909                 }
1910                 set_current_state(TASK_INTERRUPTIBLE);
1911                 schedule_timeout(1);
1912         } while (time_before(jiffies, end_time));
1913         /* This is ok, the most of motherboards have only one codec */
1914
1915       __ac97_ok2:
1916 #endif
1917
1918         if (chip->chip_type == TYPE_VIA686) {
1919                 /* route FM trap to IRQ, disable FM trap */
1920                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1921                 /* disable all GPI interrupts */
1922                 outl(0, VIAREG(chip, GPI_INTR));
1923         }
1924
1925         if (chip->chip_type != TYPE_VIA686) {
1926                 /* Workaround for Award BIOS bug:
1927                  * DXS channels don't work properly with VRA if MC97 is disabled.
1928                  */
1929                 struct pci_dev *pci;
1930                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
1931                 if (pci) {
1932                         unsigned char data;
1933                         pci_read_config_byte(pci, 0x44, &data);
1934                         pci_write_config_byte(pci, 0x44, data | 0x40);
1935                         pci_dev_put(pci);
1936                 }
1937         }
1938
1939         if (chip->chip_type != TYPE_VIA8233A) {
1940                 int i, idx;
1941                 for (idx = 0; idx < 4; idx++) {
1942                         unsigned long port = chip->port + 0x10 * idx;
1943                         for (i = 0; i < 2; i++)
1944                                 outb(chip->playback_volume[i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1945                 }
1946         }
1947
1948         return 0;
1949 }
1950
1951 #ifdef CONFIG_PM
1952 /*
1953  * power management
1954  */
1955 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
1956 {
1957         via82xx_t *chip = card->pm_private_data;
1958         int i;
1959
1960         for (i = 0; i < 2; i++)
1961                 if (chip->pcms[i])
1962                         snd_pcm_suspend_all(chip->pcms[i]);
1963         for (i = 0; i < chip->num_devs; i++)
1964                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1965         synchronize_irq(chip->irq);
1966         snd_ac97_suspend(chip->ac97);
1967
1968         /* save misc values */
1969         if (chip->chip_type != TYPE_VIA686) {
1970                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
1971                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
1972                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1973         }
1974
1975         pci_set_power_state(chip->pci, 3);
1976         pci_disable_device(chip->pci);
1977         return 0;
1978 }
1979
1980 static int snd_via82xx_resume(snd_card_t *card)
1981 {
1982         via82xx_t *chip = card->pm_private_data;
1983         int i;
1984
1985         pci_enable_device(chip->pci);
1986         pci_set_power_state(chip->pci, 0);
1987
1988         snd_via82xx_chip_init(chip);
1989
1990         if (chip->chip_type == TYPE_VIA686) {
1991                 if (chip->mpu_port_saved)
1992                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
1993                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
1994                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
1995         } else {
1996                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
1997                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
1998                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1999         }
2000
2001         snd_ac97_resume(chip->ac97);
2002
2003         for (i = 0; i < chip->num_devs; i++)
2004                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2005
2006         return 0;
2007 }
2008 #endif /* CONFIG_PM */
2009
2010 static int snd_via82xx_free(via82xx_t *chip)
2011 {
2012         unsigned int i;
2013
2014         if (chip->irq < 0)
2015                 goto __end_hw;
2016         /* disable interrupts */
2017         for (i = 0; i < chip->num_devs; i++)
2018                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2019         synchronize_irq(chip->irq);
2020       __end_hw:
2021         if (chip->irq >= 0)
2022                 free_irq(chip->irq, (void *)chip);
2023         if (chip->mpu_res) {
2024                 release_resource(chip->mpu_res);
2025                 kfree_nocheck(chip->mpu_res);
2026         }
2027         pci_release_regions(chip->pci);
2028
2029         if (chip->chip_type == TYPE_VIA686) {
2030                 snd_via686_free_gameport(chip);
2031                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2032                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2033         }
2034         pci_disable_device(chip->pci);
2035         kfree(chip);
2036         return 0;
2037 }
2038
2039 static int snd_via82xx_dev_free(snd_device_t *device)
2040 {
2041         via82xx_t *chip = device->device_data;
2042         return snd_via82xx_free(chip);
2043 }
2044
2045 static int __devinit snd_via82xx_create(snd_card_t * card,
2046                                         struct pci_dev *pci,
2047                                         int chip_type,
2048                                         int revision,
2049                                         unsigned int ac97_clock,
2050                                         via82xx_t ** r_via)
2051 {
2052         via82xx_t *chip;
2053         int err;
2054         static snd_device_ops_t ops = {
2055                 .dev_free =     snd_via82xx_dev_free,
2056         };
2057
2058         if ((err = pci_enable_device(pci)) < 0)
2059                 return err;
2060
2061         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2062                 pci_disable_device(pci);
2063                 return -ENOMEM;
2064         }
2065
2066         chip->chip_type = chip_type;
2067         chip->revision = revision;
2068
2069         spin_lock_init(&chip->reg_lock);
2070         spin_lock_init(&chip->rates[0].lock);
2071         spin_lock_init(&chip->rates[1].lock);
2072         chip->card = card;
2073         chip->pci = pci;
2074         chip->irq = -1;
2075
2076         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2077         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2078         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2079                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2080
2081         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2082                 kfree(chip);
2083                 pci_disable_device(pci);
2084                 return err;
2085         }
2086         chip->port = pci_resource_start(pci, 0);
2087         if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
2088                         card->driver, (void *)chip)) {
2089                 snd_printk("unable to grab IRQ %d\n", pci->irq);
2090                 snd_via82xx_free(chip);
2091                 return -EBUSY;
2092         }
2093         chip->irq = pci->irq;
2094         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2095                 chip->ac97_clock = ac97_clock;
2096         synchronize_irq(chip->irq);
2097
2098         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2099                 snd_via82xx_free(chip);
2100                 return err;
2101         }
2102
2103         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2104                 snd_via82xx_free(chip);
2105                 return err;
2106         }
2107
2108         /* The 8233 ac97 controller does not implement the master bit
2109          * in the pci command register. IMHO this is a violation of the PCI spec.
2110          * We call pci_set_master here because it does not hurt. */
2111         pci_set_master(pci);
2112
2113         snd_card_set_dev(card, &pci->dev);
2114
2115         *r_via = chip;
2116         return 0;
2117 }
2118
2119 struct via823x_info {
2120         int revision;
2121         char *name;
2122         int type;
2123 };
2124 static struct via823x_info via823x_cards[] __devinitdata = {
2125         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2126         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2127         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2128         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2129         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2130         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2131 };
2132
2133 /*
2134  * auto detection of DXS channel supports.
2135  */
2136 struct dxs_whitelist {
2137         unsigned short subvendor;
2138         unsigned short subdevice;
2139         unsigned short mask;
2140         short action;   /* new dxs_support value */
2141 };
2142
2143 static int __devinit check_dxs_list(struct pci_dev *pci)
2144 {
2145         static struct dxs_whitelist whitelist[] = {
2146                 { .subvendor = 0x1005, .subdevice = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2147                 { .subvendor = 0x1019, .subdevice = 0x0996, .action = VIA_DXS_48K },
2148                 { .subvendor = 0x1019, .subdevice = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2149                 { .subvendor = 0x1019, .subdevice = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2150                 { .subvendor = 0x1019, .subdevice = 0xa101, .action = VIA_DXS_SRC },
2151                 { .subvendor = 0x1025, .subdevice = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2152                 { .subvendor = 0x1025, .subdevice = 0x0046, .action = VIA_DXS_SRC }, /* Acer Aspire 1524 WLMi */
2153                 { .subvendor = 0x1043, .subdevice = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2154                 { .subvendor = 0x1043, .subdevice = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2155                 { .subvendor = 0x1043, .subdevice = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2156                 { .subvendor = 0x1043, .subdevice = 0x810d, .action = VIA_DXS_SRC }, /* ASUS */
2157                 { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC    }, /* ASUS A8V Deluxe */
2158                 { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2159                 { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */
2160                 { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2161                 { .subvendor = 0x1106, .subdevice = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2162                 { .subvendor = 0x1106, .subdevice = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2163                 { .subvendor = 0x1106, .subdevice = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2164                 { .subvendor = 0x1106, .subdevice = 0xc001, .action = VIA_DXS_SRC }, /* Insight P4-ITX */
2165                 { .subvendor = 0x1297, .subdevice = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2166                 { .subvendor = 0x1297, .subdevice = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2167                 { .subvendor = 0x1458, .subdevice = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2168                 { .subvendor = 0x1462, .subdevice = 0x0080, .action = VIA_DXS_SRC }, /* MSI K8T Neo-FIS2R */
2169                 { .subvendor = 0x1462, .subdevice = 0x0430, .action = VIA_DXS_SRC }, /* MSI 7142 (K8MM-V) */
2170                 { .subvendor = 0x1462, .subdevice = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2171                 { .subvendor = 0x1462, .subdevice = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2172                 { .subvendor = 0x1462, .subdevice = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2173                 { .subvendor = 0x1462, .subdevice = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2174                 { .subvendor = 0x1462, .subdevice = 0x7142, .action = VIA_DXS_ENABLE }, /* MSI K8MM-V */
2175                 { .subvendor = 0x147b, .subdevice = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2176                 { .subvendor = 0x147b, .subdevice = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2177                 { .subvendor = 0x147b, .subdevice = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2178                 { .subvendor = 0x147b, .subdevice = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2179                 { .subvendor = 0x14ff, .subdevice = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2180                 { .subvendor = 0x14ff, .subdevice = 0x0408, .action = VIA_DXS_SRC }, /* Twinhead laptop */
2181                 { .subvendor = 0x1584, .subdevice = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2182                 { .subvendor = 0x1584, .subdevice = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2183                 { .subvendor = 0x161f, .subdevice = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2184                 { .subvendor = 0x161f, .subdevice = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2185                 { .subvendor = 0x1631, .subdevice = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2186                 { .subvendor = 0x1695, .subdevice = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2187                 { .subvendor = 0x1849, .subdevice = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2188                 { .subvendor = 0x1919, .subdevice = 0x200a, .action = VIA_DXS_NO_VRA }, /* Soltek SL-K8Tpro-939 */
2189                 { .subvendor = 0x4005, .subdevice = 0x4710, .action = VIA_DXS_SRC },    /* MSI K7T266 Pro2 (MS-6380 V2.0) BIOS 3.7 */
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         .owner = THIS_MODULE,
2349         .id_table = snd_via82xx_ids,
2350         .probe = snd_via82xx_probe,
2351         .remove = __devexit_p(snd_via82xx_remove),
2352         SND_PCI_PM_CALLBACKS
2353 };
2354
2355 static int __init alsa_card_via82xx_init(void)
2356 {
2357         return pci_register_driver(&driver);
2358 }
2359
2360 static void __exit alsa_card_via82xx_exit(void)
2361 {
2362         pci_unregister_driver(&driver);
2363 }
2364
2365 module_init(alsa_card_via82xx_init)
2366 module_exit(alsa_card_via82xx_exit)