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@perex.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  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46  *      - Optimize position calculation for the 823x chips.
  47  */
  48
  49 #include <asm/io.h>
  50 #include <linux/delay.h>
  51 #include <linux/interrupt.h>
  52 #include <linux/init.h>
  53 #include <linux/pci.h>
  54 #include <linux/slab.h>
  55 #include <linux/gameport.h>
  56 #include <linux/moduleparam.h>
  57 #include <sound/core.h>
  58 #include <sound/pcm.h>
  59 #include <sound/pcm_params.h>
  60 #include <sound/info.h>
  61 #include <sound/tlv.h>
  62 #include <sound/ac97_codec.h>
  63 #include <sound/mpu401.h>
  64 #include <sound/initval.h>
  65
  66 #if 0
  67 #define POINTER_DEBUG
  68 #endif
  69
  70 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71 MODULE_DESCRIPTION("VIA VT82xx audio");
  72 MODULE_LICENSE("GPL");
  73 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  74
  75 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  76 #define SUPPORT_JOYSTICK 1
  77 #endif
  78
  79 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81 static long mpu_port;
  82 #ifdef SUPPORT_JOYSTICK
  83 static int joystick;
  84 #endif
  85 static int ac97_clock = 48000;
  86 static char *ac97_quirk;
  87 static int dxs_support;
  88
  89 module_param(index, int, 0444);
  90 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  91 module_param(id, charp, 0444);
  92 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  93 module_param(mpu_port, long, 0444);
  94 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  95 #ifdef SUPPORT_JOYSTICK
  96 module_param(joystick, bool, 0444);
  97 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  98 #endif
  99 module_param(ac97_clock, int, 0444);
 100 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 101 module_param(ac97_quirk, charp, 0444);
 102 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 103 module_param(dxs_support, int, 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 /* just for backward compatibility */
 107 static int enable;
 108 module_param(enable, bool, 0444);
 109
 110
 111 /* revision numbers for via686 */
 112 #define VIA_REV_686_A           0x10
 113 #define VIA_REV_686_B           0x11
 114 #define VIA_REV_686_C           0x12
 115 #define VIA_REV_686_D           0x13
 116 #define VIA_REV_686_E           0x14
 117 #define VIA_REV_686_H           0x20
 118
 119 /* revision numbers for via8233 */
 120 #define VIA_REV_PRE_8233        0x10    /* not in market */
 121 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 122 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 123 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 124 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 125 #define VIA_REV_8237            0x60
 126 #define VIA_REV_8251            0x70
 127
 128 /*
 129  *  Direct registers
 130  */
 131
 132 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 133 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 134
 135 /* common offsets */
 136 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 137 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 138 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 139 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 140 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 141 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 142 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 143 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 144 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 145 #define   VIA_REG_CTRL_START            0x80    /* WO */
 146 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 147 #define   VIA_REG_CTRL_AUTOSTART        0x20
 148 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 149 #define   VIA_REG_CTRL_INT_STOP         0x04
 150 #define   VIA_REG_CTRL_INT_EOL          0x02
 151 #define   VIA_REG_CTRL_INT_FLAG         0x01
 152 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 153 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 154 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 155 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 156 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 157 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 158 #define   VIA_REG_TYPE_INT_LLINE        0x00
 159 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 160 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 161 #define   VIA_REG_TYPE_INT_MASK         0x0c
 162 #define   VIA_REG_TYPE_INT_EOL          0x02
 163 #define   VIA_REG_TYPE_INT_FLAG         0x01
 164 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 165 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 166 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 167 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 168 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 169 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 170 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 171
 172 #define DEFINE_VIA_REGSET(name,val) \
 173 enum {\
 174         VIA_REG_##name##_STATUS         = (val),\
 175         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 176         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 177         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 178         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 179         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 180         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 181 }
 182
 183 /* playback block */
 184 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 185 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 186 DEFINE_VIA_REGSET(FM, 0x20);
 187
 188 /* AC'97 */
 189 #define VIA_REG_AC97                    0x80    /* dword */
 190 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 191 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 192 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 193 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 194 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 195 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 196 #define   VIA_REG_AC97_BUSY             (1<<24)
 197 #define   VIA_REG_AC97_READ             (1<<23)
 198 #define   VIA_REG_AC97_CMD_SHIFT        16
 199 #define   VIA_REG_AC97_CMD_MASK         0x7e
 200 #define   VIA_REG_AC97_DATA_SHIFT       0
 201 #define   VIA_REG_AC97_DATA_MASK        0xffff
 202
 203 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 204 /* via686 */
 205 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 206 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 207 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 208 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 209 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 210 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 211 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 212 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 213 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 214 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 215 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 216 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 217 /* via8233 */
 218 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 219 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 220 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 221 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 222 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 223 #define   VIA8233_REG_SGD_CHAN_SDX      0
 224 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 225 #define   VIA8233_REG_SGD_CHAN_REC      6
 226 #define   VIA8233_REG_SGD_CHAN_REC1     7
 227
 228 #define VIA_REG_GPI_STATUS              0x88
 229 #define VIA_REG_GPI_INTR                0x8c
 230
 231 /* multi-channel and capture registers for via8233 */
 232 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 233 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 234
 235 /* via8233-specific registers */
 236 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 237 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 238 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 239 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 240 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 241 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 242 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 243 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 244
 245 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 246
 247 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 248 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 249 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 250 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 251
 252 #define VIA_TBL_BIT_FLAG        0x40000000
 253 #define VIA_TBL_BIT_EOL         0x80000000
 254
 255 /* pci space */
 256 #define VIA_ACLINK_STAT         0x40
 257 #define  VIA_ACLINK_C11_READY   0x20
 258 #define  VIA_ACLINK_C10_READY   0x10
 259 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 260 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 261 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 262 #define VIA_ACLINK_CTRL         0x41
 263 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 264 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 265 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 266 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 267 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 268 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 269 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 270 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 271 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 272                                  VIA_ACLINK_CTRL_RESET|\
 273                                  VIA_ACLINK_CTRL_PCM|\
 274                                  VIA_ACLINK_CTRL_VRA)
 275 #define VIA_FUNC_ENABLE         0x42
 276 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 277 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 278 #define  VIA_FUNC_RX2C_WRITE    0x20
 279 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 280 #define  VIA_FUNC_ENABLE_GAME   0x08
 281 #define  VIA_FUNC_ENABLE_FM     0x04
 282 #define  VIA_FUNC_ENABLE_MIDI   0x02
 283 #define  VIA_FUNC_ENABLE_SB     0x01
 284 #define VIA_PNP_CONTROL         0x43
 285 #define VIA_FM_NMI_CTRL         0x48
 286 #define VIA8233_VOLCHG_CTRL     0x48
 287 #define VIA8233_SPDIF_CTRL      0x49
 288 #define  VIA8233_SPDIF_DX3      0x08
 289 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 290 #define  VIA8233_SPDIF_SLOT_1011        0x00
 291 #define  VIA8233_SPDIF_SLOT_34          0x01
 292 #define  VIA8233_SPDIF_SLOT_78          0x02
 293 #define  VIA8233_SPDIF_SLOT_69          0x03
 294
 295 /*
 296  */
 297
 298 #define VIA_DXS_AUTO    0
 299 #define VIA_DXS_ENABLE  1
 300 #define VIA_DXS_DISABLE 2
 301 #define VIA_DXS_48K     3
 302 #define VIA_DXS_NO_VRA  4
 303 #define VIA_DXS_SRC     5
 304
 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 viadev {
 318         unsigned int reg_offset;
 319         unsigned long port;
 320         int direction;  /* playback = 0, capture = 1 */
 321         struct snd_pcm_substream *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         int hwptr_done;         /* processed frame position in the buffer */
 332         int in_interrupt;
 333         int shadow_shift;
 334 };
 335
 336
 337 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 338 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 339
 340 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 341
 342 struct via_rate_lock {
 343         spinlock_t lock;
 344         int rate;
 345         int used;
 346 };
 347
 348 struct via82xx {
 349         int irq;
 350
 351         unsigned long port;
 352         struct resource *mpu_res;
 353         int chip_type;
 354         unsigned char revision;
 355
 356         unsigned char old_legacy;
 357         unsigned char old_legacy_cfg;
 358 #ifdef CONFIG_PM
 359         unsigned char legacy_saved;
 360         unsigned char legacy_cfg_saved;
 361         unsigned char spdif_ctrl_saved;
 362         unsigned char capture_src_saved[2];
 363         unsigned int mpu_port_saved;
 364 #endif
 365
 366         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 367         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 368
 369         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 370
 371         struct pci_dev *pci;
 372         struct snd_card *card;
 373
 374         unsigned int num_devs;
 375         unsigned int playback_devno, multi_devno, capture_devno;
 376         struct viadev devs[VIA_MAX_DEVS];
 377         struct via_rate_lock rates[2]; /* playback and capture */
 378         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 379         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 380         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 381         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 382
 383         struct snd_pcm *pcms[2];
 384         struct snd_rawmidi *rmidi;
 385
 386         struct snd_ac97_bus *ac97_bus;
 387         struct snd_ac97 *ac97;
 388         unsigned int ac97_clock;
 389         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 390
 391         spinlock_t reg_lock;
 392         struct snd_info_entry *proc_entry;
 393
 394 #ifdef SUPPORT_JOYSTICK
 395         struct gameport *gameport;
 396 #endif
 397 };
 398
 399 static struct pci_device_id snd_via82xx_ids[] = {
 400         /* 0x1106, 0x3058 */
 401         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
 402         /* 0x1106, 0x3059 */
 403         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
 404         { 0, }
 405 };
 406
 407 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 408
 409 /*
 410  */
 411
 412 /*
 413  * allocate and initialize the descriptor buffers
 414  * periods = number of periods
 415  * fragsize = period size in bytes
 416  */
 417 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 418                            struct pci_dev *pci,
 419                            unsigned int periods, unsigned int fragsize)
 420 {
 421         unsigned int i, idx, ofs, rest;
 422         struct via82xx *chip = snd_pcm_substream_chip(substream);
 423
 424         if (dev->table.area == NULL) {
 425                 /* the start of each lists must be aligned to 8 bytes,
 426                  * but the kernel pages are much bigger, so we don't care
 427                  */
 428                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 429                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 430                                         &dev->table) < 0)
 431                         return -ENOMEM;
 432         }
 433         if (! dev->idx_table) {
 434                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 435                 if (! dev->idx_table)
 436                         return -ENOMEM;
 437         }
 438
 439         /* fill the entries */
 440         idx = 0;
 441         ofs = 0;
 442         for (i = 0; i < periods; i++) {
 443                 rest = fragsize;
 444                 /* fill descriptors for a period.
 445                  * a period can be split to several descriptors if it's
 446                  * over page boundary.
 447                  */
 448                 do {
 449                         unsigned int r;
 450                         unsigned int flag;
 451                         unsigned int addr;
 452
 453                         if (idx >= VIA_TABLE_SIZE) {
 454                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 455                                 return -EINVAL;
 456                         }
 457                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 458                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 459                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 460                         if (rest < r)
 461                                 r = rest;
 462                         rest -= r;
 463                         if (! rest) {
 464                                 if (i == periods - 1)
 465                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 466                                 else
 467                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 468                         } else
 469                                 flag = 0; /* period continues to the next */
 470                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 471                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 472                         dev->idx_table[idx].offset = ofs;
 473                         dev->idx_table[idx].size = r;
 474                         ofs += r;
 475                         idx++;
 476                 } while (rest > 0);
 477         }
 478         dev->tbl_entries = idx;
 479         dev->bufsize = periods * fragsize;
 480         dev->bufsize2 = dev->bufsize / 2;
 481         dev->fragsize = fragsize;
 482         return 0;
 483 }
 484
 485
 486 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 487                            struct pci_dev *pci)
 488 {
 489         if (dev->table.area) {
 490                 snd_dma_free_pages(&dev->table);
 491                 dev->table.area = NULL;
 492         }
 493         kfree(dev->idx_table);
 494         dev->idx_table = NULL;
 495         return 0;
 496 }
 497
 498 /*
 499  *  Basic I/O
 500  */
 501
 502 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 503 {
 504         return inl(VIAREG(chip, AC97));
 505 }
 506
 507 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 508 {
 509         outl(val, VIAREG(chip, AC97));
 510 }
 511
 512 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 513 {
 514         unsigned int timeout = 1000;    /* 1ms */
 515         unsigned int val;
 516
 517         while (timeout-- > 0) {
 518                 udelay(1);
 519                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 520                         return val & 0xffff;
 521         }
 522         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 523                    secondary, snd_via82xx_codec_xread(chip));
 524         return -EIO;
 525 }
 526
 527 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 528 {
 529         unsigned int timeout = 1000;    /* 1ms */
 530         unsigned int val, val1;
 531         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 532                                          VIA_REG_AC97_SECONDARY_VALID;
 533
 534         while (timeout-- > 0) {
 535                 val = snd_via82xx_codec_xread(chip);
 536                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 537                 if (val1 == stat)
 538                         return val & 0xffff;
 539                 udelay(1);
 540         }
 541         return -EIO;
 542 }
 543
 544 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 545 {
 546         struct via82xx *chip = ac97->private_data;
 547         int err;
 548         err = snd_via82xx_codec_ready(chip, ac97->num);
 549         /* here we need to wait fairly for long time.. */
 550         msleep(500);
 551 }
 552
 553 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 554                                     unsigned short reg,
 555                                     unsigned short val)
 556 {
 557         struct via82xx *chip = ac97->private_data;
 558         unsigned int xval;
 559
 560         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 561         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 562         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 563         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 564         snd_via82xx_codec_xwrite(chip, xval);
 565         snd_via82xx_codec_ready(chip, ac97->num);
 566 }
 567
 568 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 569 {
 570         struct via82xx *chip = ac97->private_data;
 571         unsigned int xval, val = 0xffff;
 572         int again = 0;
 573
 574         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 575         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 576         xval |= VIA_REG_AC97_READ;
 577         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 578         while (1) {
 579                 if (again++ > 3) {
 580                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 581                                    ac97->num, snd_via82xx_codec_xread(chip));
 582                         return 0xffff;
 583                 }
 584                 snd_via82xx_codec_xwrite(chip, xval);
 585                 udelay (20);
 586                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 587                         udelay(25);
 588                         val = snd_via82xx_codec_xread(chip);
 589                         break;
 590                 }
 591         }
 592         return val & 0xffff;
 593 }
 594
 595 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 596 {
 597         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 598              VIADEV_REG(viadev, OFFSET_CONTROL));
 599         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 600         udelay(50);
 601         /* disable interrupts */
 602         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 603         /* clear interrupts */
 604         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 605         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 606         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 607         viadev->lastpos = 0;
 608         viadev->hwptr_done = 0;
 609 }
 610
 611
 612 /*
 613  *  Interrupt handler
 614  *  Used for 686 and 8233A
 615  */
 616 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 617 {
 618         struct via82xx *chip = dev_id;
 619         unsigned int status;
 620         unsigned int i;
 621
 622         status = inl(VIAREG(chip, SGD_SHADOW));
 623         if (! (status & chip->intr_mask)) {
 624                 if (chip->rmidi)
 625                         /* check mpu401 interrupt */
 626                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 627                 return IRQ_NONE;
 628         }
 629
 630         /* check status for each stream */
 631         spin_lock(&chip->reg_lock);
 632         for (i = 0; i < chip->num_devs; i++) {
 633                 struct viadev *viadev = &chip->devs[i];
 634                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 635                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 636                         continue;
 637                 if (viadev->substream && viadev->running) {
 638                         /*
 639                          * Update hwptr_done based on 'period elapsed'
 640                          * interrupts. We'll use it, when the chip returns 0
 641                          * for OFFSET_CURR_COUNT.
 642                          */
 643                         if (c_status & VIA_REG_STAT_EOL)
 644                                 viadev->hwptr_done = 0;
 645                         else
 646                                 viadev->hwptr_done += viadev->fragsize;
 647                         viadev->in_interrupt = c_status;
 648                         spin_unlock(&chip->reg_lock);
 649                         snd_pcm_period_elapsed(viadev->substream);
 650                         spin_lock(&chip->reg_lock);
 651                         viadev->in_interrupt = 0;
 652                 }
 653                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 654         }
 655         spin_unlock(&chip->reg_lock);
 656         return IRQ_HANDLED;
 657 }
 658
 659 /*
 660  *  Interrupt handler
 661  */
 662 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 663 {
 664         struct via82xx *chip = dev_id;
 665         unsigned int status;
 666         unsigned int i;
 667         int irqreturn = 0;
 668
 669         /* check status for each stream */
 670         spin_lock(&chip->reg_lock);
 671         status = inl(VIAREG(chip, SGD_SHADOW));
 672
 673         for (i = 0; i < chip->num_devs; i++) {
 674                 struct viadev *viadev = &chip->devs[i];
 675                 struct snd_pcm_substream *substream;
 676                 unsigned char c_status, shadow_status;
 677
 678                 shadow_status = (status >> viadev->shadow_shift) &
 679                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 680                          VIA_REG_STAT_FLAG);
 681                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 682                 if (!c_status)
 683                         continue;
 684
 685                 substream = viadev->substream;
 686                 if (substream && viadev->running) {
 687                         /*
 688                          * Update hwptr_done based on 'period elapsed'
 689                          * interrupts. We'll use it, when the chip returns 0
 690                          * for OFFSET_CURR_COUNT.
 691                          */
 692                         if (c_status & VIA_REG_STAT_EOL)
 693                                 viadev->hwptr_done = 0;
 694                         else
 695                                 viadev->hwptr_done += viadev->fragsize;
 696                         viadev->in_interrupt = c_status;
 697                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 698                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 699                         spin_unlock(&chip->reg_lock);
 700
 701                         snd_pcm_period_elapsed(substream);
 702
 703                         spin_lock(&chip->reg_lock);
 704                         viadev->in_interrupt = 0;
 705                 }
 706                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 707                 irqreturn = 1;
 708         }
 709         spin_unlock(&chip->reg_lock);
 710         return IRQ_RETVAL(irqreturn);
 711 }
 712
 713 /*
 714  *  PCM callbacks
 715  */
 716
 717 /*
 718  * trigger callback
 719  */
 720 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 721 {
 722         struct via82xx *chip = snd_pcm_substream_chip(substream);
 723         struct viadev *viadev = substream->runtime->private_data;
 724         unsigned char val;
 725
 726         if (chip->chip_type != TYPE_VIA686)
 727                 val = VIA_REG_CTRL_INT;
 728         else
 729                 val = 0;
 730         switch (cmd) {
 731         case SNDRV_PCM_TRIGGER_START:
 732         case SNDRV_PCM_TRIGGER_RESUME:
 733                 val |= VIA_REG_CTRL_START;
 734                 viadev->running = 1;
 735                 break;
 736         case SNDRV_PCM_TRIGGER_STOP:
 737         case SNDRV_PCM_TRIGGER_SUSPEND:
 738                 val = VIA_REG_CTRL_TERMINATE;
 739                 viadev->running = 0;
 740                 break;
 741         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 742                 val |= VIA_REG_CTRL_PAUSE;
 743                 viadev->running = 0;
 744                 break;
 745         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 746                 viadev->running = 1;
 747                 break;
 748         default:
 749                 return -EINVAL;
 750         }
 751         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 752         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 753                 snd_via82xx_channel_reset(chip, viadev);
 754         return 0;
 755 }
 756
 757
 758 /*
 759  * pointer callbacks
 760  */
 761
 762 /*
 763  * calculate the linear position at the given sg-buffer index and the rest count
 764  */
 765
 766 #define check_invalid_pos(viadev,pos) \
 767         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 768                                      viadev->lastpos < viadev->bufsize2))
 769
 770 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 771                                            unsigned int count)
 772 {
 773         unsigned int size, base, res;
 774
 775         size = viadev->idx_table[idx].size;
 776         base = viadev->idx_table[idx].offset;
 777         res = base + size - count;
 778         if (res >= viadev->bufsize)
 779                 res -= viadev->bufsize;
 780
 781         /* check the validity of the calculated position */
 782         if (size < count) {
 783                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 784                            (int)size, (int)count);
 785                 res = viadev->lastpos;
 786         } else {
 787                 if (! count) {
 788                         /* Some mobos report count = 0 on the DMA boundary,
 789                          * i.e. count = size indeed.
 790                          * Let's check whether this step is above the expected size.
 791                          */
 792                         int delta = res - viadev->lastpos;
 793                         if (delta < 0)
 794                                 delta += viadev->bufsize;
 795                         if ((unsigned int)delta > viadev->fragsize)
 796                                 res = base;
 797                 }
 798                 if (check_invalid_pos(viadev, res)) {
 799 #ifdef POINTER_DEBUG
 800                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 801                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 802                                "count = 0x%x\n", idx, viadev->tbl_entries,
 803                                viadev->lastpos, viadev->bufsize2,
 804                                viadev->idx_table[idx].offset,
 805                                viadev->idx_table[idx].size, count);
 806 #endif
 807                         /* count register returns full size when end of buffer is reached */
 808                         res = base + size;
 809                         if (check_invalid_pos(viadev, res)) {
 810                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 811                                            "using last valid pointer\n");
 812                                 res = viadev->lastpos;
 813                         }
 814                 }
 815         }
 816         return res;
 817 }
 818
 819 /*
 820  * get the current pointer on via686
 821  */
 822 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 823 {
 824         struct via82xx *chip = snd_pcm_substream_chip(substream);
 825         struct viadev *viadev = substream->runtime->private_data;
 826         unsigned int idx, ptr, count, res;
 827
 828         if (snd_BUG_ON(!viadev->tbl_entries))
 829                 return 0;
 830         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 831                 return 0;
 832
 833         spin_lock(&chip->reg_lock);
 834         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 835         /* The via686a does not have the current index register,
 836          * so we need to calculate the index from CURR_PTR.
 837          */
 838         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 839         if (ptr <= (unsigned int)viadev->table.addr)
 840                 idx = 0;
 841         else /* CURR_PTR holds the address + 8 */
 842                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 843         res = calc_linear_pos(viadev, idx, count);
 844         viadev->lastpos = res; /* remember the last position */
 845         spin_unlock(&chip->reg_lock);
 846
 847         return bytes_to_frames(substream->runtime, res);
 848 }
 849
 850 /*
 851  * get the current pointer on via823x
 852  */
 853 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 854 {
 855         struct via82xx *chip = snd_pcm_substream_chip(substream);
 856         struct viadev *viadev = substream->runtime->private_data;
 857         unsigned int idx, count, res;
 858         int status;
 859
 860         if (snd_BUG_ON(!viadev->tbl_entries))
 861                 return 0;
 862
 863         spin_lock(&chip->reg_lock);
 864         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 865         status = viadev->in_interrupt;
 866         if (!status)
 867                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 868
 869         /* An apparent bug in the 8251 is worked around by sending a
 870          * REG_CTRL_START. */
 871         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 872                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 873
 874         if (!(status & VIA_REG_STAT_ACTIVE)) {
 875                 res = 0;
 876                 goto unlock;
 877         }
 878         if (count & 0xffffff) {
 879                 idx = count >> 24;
 880                 if (idx >= viadev->tbl_entries) {
 881 #ifdef POINTER_DEBUG
 882                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 883                                viadev->tbl_entries);
 884 #endif
 885                         res = viadev->lastpos;
 886                 } else {
 887                         count &= 0xffffff;
 888                         res = calc_linear_pos(viadev, idx, count);
 889                 }
 890         } else {
 891                 res = viadev->hwptr_done;
 892                 if (!viadev->in_interrupt) {
 893                         if (status & VIA_REG_STAT_EOL) {
 894                                 res = 0;
 895                         } else
 896                                 if (status & VIA_REG_STAT_FLAG) {
 897                                         res += viadev->fragsize;
 898                                 }
 899                 }
 900         }
 901 unlock:
 902         viadev->lastpos = res;
 903         spin_unlock(&chip->reg_lock);
 904
 905         return bytes_to_frames(substream->runtime, res);
 906 }
 907
 908
 909 /*
 910  * hw_params callback:
 911  * allocate the buffer and build up the buffer description table
 912  */
 913 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 914                                  struct snd_pcm_hw_params *hw_params)
 915 {
 916         struct via82xx *chip = snd_pcm_substream_chip(substream);
 917         struct viadev *viadev = substream->runtime->private_data;
 918         int err;
 919
 920         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 921         if (err < 0)
 922                 return err;
 923         err = build_via_table(viadev, substream, chip->pci,
 924                               params_periods(hw_params),
 925                               params_period_bytes(hw_params));
 926         if (err < 0)
 927                 return err;
 928
 929         return 0;
 930 }
 931
 932 /*
 933  * hw_free callback:
 934  * clean up the buffer description table and release the buffer
 935  */
 936 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 937 {
 938         struct via82xx *chip = snd_pcm_substream_chip(substream);
 939         struct viadev *viadev = substream->runtime->private_data;
 940
 941         clean_via_table(viadev, substream, chip->pci);
 942         snd_pcm_lib_free_pages(substream);
 943         return 0;
 944 }
 945
 946
 947 /*
 948  * set up the table pointer
 949  */
 950 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 951 {
 952         snd_via82xx_codec_ready(chip, 0);
 953         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 954         udelay(20);
 955         snd_via82xx_codec_ready(chip, 0);
 956 }
 957
 958 /*
 959  * prepare callback for playback and capture on via686
 960  */
 961 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 962                                 struct snd_pcm_runtime *runtime)
 963 {
 964         snd_via82xx_channel_reset(chip, viadev);
 965         /* this must be set after channel_reset */
 966         snd_via82xx_set_table_ptr(chip, viadev);
 967         outb(VIA_REG_TYPE_AUTOSTART |
 968              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 969              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 970              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 971              VIA_REG_TYPE_INT_EOL |
 972              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 973 }
 974
 975 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 976 {
 977         struct via82xx *chip = snd_pcm_substream_chip(substream);
 978         struct viadev *viadev = substream->runtime->private_data;
 979         struct snd_pcm_runtime *runtime = substream->runtime;
 980
 981         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 982         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 983         via686_setup_format(chip, viadev, runtime);
 984         return 0;
 985 }
 986
 987 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 988 {
 989         struct via82xx *chip = snd_pcm_substream_chip(substream);
 990         struct viadev *viadev = substream->runtime->private_data;
 991         struct snd_pcm_runtime *runtime = substream->runtime;
 992
 993         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 994         via686_setup_format(chip, viadev, runtime);
 995         return 0;
 996 }
 997
 998 /*
 999  * lock the current rate
1000  */
1001 static int via_lock_rate(struct via_rate_lock *rec, int rate)
1002 {
1003         int changed = 0;
1004
1005         spin_lock_irq(&rec->lock);
1006         if (rec->rate != rate) {
1007                 if (rec->rate && rec->used > 1) /* already set */
1008                         changed = -EINVAL;
1009                 else {
1010                         rec->rate = rate;
1011                         changed = 1;
1012                 }
1013         }
1014         spin_unlock_irq(&rec->lock);
1015         return changed;
1016 }
1017
1018 /*
1019  * prepare callback for DSX playback on via823x
1020  */
1021 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1022 {
1023         struct via82xx *chip = snd_pcm_substream_chip(substream);
1024         struct viadev *viadev = substream->runtime->private_data;
1025         struct snd_pcm_runtime *runtime = substream->runtime;
1026         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1027         int rate_changed;
1028         u32 rbits;
1029
1030         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1031                 return rate_changed;
1032         if (rate_changed)
1033                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1034                                   chip->no_vra ? 48000 : runtime->rate);
1035         if (chip->spdif_on && viadev->reg_offset == 0x30)
1036                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1037
1038         if (runtime->rate == 48000)
1039                 rbits = 0xfffff;
1040         else
1041                 rbits = (0x100000 / 48000) * runtime->rate +
1042                         ((0x100000 % 48000) * runtime->rate) / 48000;
1043         snd_BUG_ON(rbits & ~0xfffff);
1044         snd_via82xx_channel_reset(chip, viadev);
1045         snd_via82xx_set_table_ptr(chip, viadev);
1046         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1047              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1048         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1049              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1050         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1051              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1052              rbits | /* rate */
1053              0xff000000,    /* STOP index is never reached */
1054              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1055         udelay(20);
1056         snd_via82xx_codec_ready(chip, 0);
1057         return 0;
1058 }
1059
1060 /*
1061  * prepare callback for multi-channel playback on via823x
1062  */
1063 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1064 {
1065         struct via82xx *chip = snd_pcm_substream_chip(substream);
1066         struct viadev *viadev = substream->runtime->private_data;
1067         struct snd_pcm_runtime *runtime = substream->runtime;
1068         unsigned int slots;
1069         int fmt;
1070
1071         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1072                 return -EINVAL;
1073         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1074         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1075         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1076         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1077         snd_via82xx_channel_reset(chip, viadev);
1078         snd_via82xx_set_table_ptr(chip, viadev);
1079
1080         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1081                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1082         fmt |= runtime->channels << 4;
1083         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1084 #if 0
1085         if (chip->revision == VIA_REV_8233A)
1086                 slots = 0;
1087         else
1088 #endif
1089         {
1090                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1091                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1092                 switch (runtime->channels) {
1093                 case 1: slots = (1<<0) | (1<<4); break;
1094                 case 2: slots = (1<<0) | (2<<4); break;
1095                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1096                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1097                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1098                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1099                 default: slots = 0; break;
1100                 }
1101         }
1102         /* STOP index is never reached */
1103         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1104         udelay(20);
1105         snd_via82xx_codec_ready(chip, 0);
1106         return 0;
1107 }
1108
1109 /*
1110  * prepare callback for capture on via823x
1111  */
1112 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1113 {
1114         struct via82xx *chip = snd_pcm_substream_chip(substream);
1115         struct viadev *viadev = substream->runtime->private_data;
1116         struct snd_pcm_runtime *runtime = substream->runtime;
1117
1118         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1119                 return -EINVAL;
1120         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1121         snd_via82xx_channel_reset(chip, viadev);
1122         snd_via82xx_set_table_ptr(chip, viadev);
1123         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1124         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1125              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1126              0xff000000,    /* STOP index is never reached */
1127              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1128         udelay(20);
1129         snd_via82xx_codec_ready(chip, 0);
1130         return 0;
1131 }
1132
1133
1134 /*
1135  * pcm hardware definition, identical for both playback and capture
1136  */
1137 static struct snd_pcm_hardware snd_via82xx_hw =
1138 {
1139         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1140                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1141                                  SNDRV_PCM_INFO_MMAP_VALID |
1142                                  /* SNDRV_PCM_INFO_RESUME | */
1143                                  SNDRV_PCM_INFO_PAUSE),
1144         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1145         .rates =                SNDRV_PCM_RATE_48000,
1146         .rate_min =             48000,
1147         .rate_max =             48000,
1148         .channels_min =         1,
1149         .channels_max =         2,
1150         .buffer_bytes_max =     128 * 1024,
1151         .period_bytes_min =     32,
1152         .period_bytes_max =     128 * 1024,
1153         .periods_min =          2,
1154         .periods_max =          VIA_TABLE_SIZE / 2,
1155         .fifo_size =            0,
1156 };
1157
1158
1159 /*
1160  * open callback skeleton
1161  */
1162 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1163                                 struct snd_pcm_substream *substream)
1164 {
1165         struct snd_pcm_runtime *runtime = substream->runtime;
1166         int err;
1167         struct via_rate_lock *ratep;
1168
1169         runtime->hw = snd_via82xx_hw;
1170
1171         /* set the hw rate condition */
1172         ratep = &chip->rates[viadev->direction];
1173         spin_lock_irq(&ratep->lock);
1174         ratep->used++;
1175         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1176                 /* DXS#3 and spdif is on */
1177                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1178                 snd_pcm_limit_hw_rates(runtime);
1179         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1180                 /* fixed DXS playback rate */
1181                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1182                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1183         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1184                 /* use full SRC capabilities of DXS */
1185                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1186                                      SNDRV_PCM_RATE_8000_48000);
1187                 runtime->hw.rate_min = 8000;
1188                 runtime->hw.rate_max = 48000;
1189         } else if (! ratep->rate) {
1190                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1191                 runtime->hw.rates = chip->ac97->rates[idx];
1192                 snd_pcm_limit_hw_rates(runtime);
1193         } else {
1194                 /* a fixed rate */
1195                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1196                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1197         }
1198         spin_unlock_irq(&ratep->lock);
1199
1200         /* we may remove following constaint when we modify table entries
1201            in interrupt */
1202         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1203                 return err;
1204
1205         runtime->private_data = viadev;
1206         viadev->substream = substream;
1207
1208         return 0;
1209 }
1210
1211
1212 /*
1213  * open callback for playback on via686 and via823x DSX
1214  */
1215 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1216 {
1217         struct via82xx *chip = snd_pcm_substream_chip(substream);
1218         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1219         int err;
1220
1221         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1222                 return err;
1223         return 0;
1224 }
1225
1226 /*
1227  * open callback for playback on via823x multi-channel
1228  */
1229 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1230 {
1231         struct via82xx *chip = snd_pcm_substream_chip(substream);
1232         struct viadev *viadev = &chip->devs[chip->multi_devno];
1233         int err;
1234         /* channels constraint for VIA8233A
1235          * 3 and 5 channels are not supported
1236          */
1237         static unsigned int channels[] = {
1238                 1, 2, 4, 6
1239         };
1240         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1241                 .count = ARRAY_SIZE(channels),
1242                 .list = channels,
1243                 .mask = 0,
1244         };
1245
1246         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1247                 return err;
1248         substream->runtime->hw.channels_max = 6;
1249         if (chip->revision == VIA_REV_8233A)
1250                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1251                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1252                                            &hw_constraints_channels);
1253         return 0;
1254 }
1255
1256 /*
1257  * open callback for capture on via686 and via823x
1258  */
1259 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1260 {
1261         struct via82xx *chip = snd_pcm_substream_chip(substream);
1262         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1263
1264         return snd_via82xx_pcm_open(chip, viadev, substream);
1265 }
1266
1267 /*
1268  * close callback
1269  */
1270 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1271 {
1272         struct via82xx *chip = snd_pcm_substream_chip(substream);
1273         struct viadev *viadev = substream->runtime->private_data;
1274         struct via_rate_lock *ratep;
1275
1276         /* release the rate lock */
1277         ratep = &chip->rates[viadev->direction];
1278         spin_lock_irq(&ratep->lock);
1279         ratep->used--;
1280         if (! ratep->used)
1281                 ratep->rate = 0;
1282         spin_unlock_irq(&ratep->lock);
1283         if (! ratep->rate) {
1284                 if (! viadev->direction) {
1285                         snd_ac97_update_power(chip->ac97,
1286                                               AC97_PCM_FRONT_DAC_RATE, 0);
1287                         snd_ac97_update_power(chip->ac97,
1288                                               AC97_PCM_SURR_DAC_RATE, 0);
1289                         snd_ac97_update_power(chip->ac97,
1290                                               AC97_PCM_LFE_DAC_RATE, 0);
1291                 } else
1292                         snd_ac97_update_power(chip->ac97,
1293                                               AC97_PCM_LR_ADC_RATE, 0);
1294         }
1295         viadev->substream = NULL;
1296         return 0;
1297 }
1298
1299
1300 /* via686 playback callbacks */
1301 static struct snd_pcm_ops snd_via686_playback_ops = {
1302         .open =         snd_via82xx_playback_open,
1303         .close =        snd_via82xx_pcm_close,
1304         .ioctl =        snd_pcm_lib_ioctl,
1305         .hw_params =    snd_via82xx_hw_params,
1306         .hw_free =      snd_via82xx_hw_free,
1307         .prepare =      snd_via686_playback_prepare,
1308         .trigger =      snd_via82xx_pcm_trigger,
1309         .pointer =      snd_via686_pcm_pointer,
1310         .page =         snd_pcm_sgbuf_ops_page,
1311 };
1312
1313 /* via686 capture callbacks */
1314 static struct snd_pcm_ops snd_via686_capture_ops = {
1315         .open =         snd_via82xx_capture_open,
1316         .close =        snd_via82xx_pcm_close,
1317         .ioctl =        snd_pcm_lib_ioctl,
1318         .hw_params =    snd_via82xx_hw_params,
1319         .hw_free =      snd_via82xx_hw_free,
1320         .prepare =      snd_via686_capture_prepare,
1321         .trigger =      snd_via82xx_pcm_trigger,
1322         .pointer =      snd_via686_pcm_pointer,
1323         .page =         snd_pcm_sgbuf_ops_page,
1324 };
1325
1326 /* via823x DSX playback callbacks */
1327 static struct snd_pcm_ops snd_via8233_playback_ops = {
1328         .open =         snd_via82xx_playback_open,
1329         .close =        snd_via82xx_pcm_close,
1330         .ioctl =        snd_pcm_lib_ioctl,
1331         .hw_params =    snd_via82xx_hw_params,
1332         .hw_free =      snd_via82xx_hw_free,
1333         .prepare =      snd_via8233_playback_prepare,
1334         .trigger =      snd_via82xx_pcm_trigger,
1335         .pointer =      snd_via8233_pcm_pointer,
1336         .page =         snd_pcm_sgbuf_ops_page,
1337 };
1338
1339 /* via823x multi-channel playback callbacks */
1340 static struct snd_pcm_ops snd_via8233_multi_ops = {
1341         .open =         snd_via8233_multi_open,
1342         .close =        snd_via82xx_pcm_close,
1343         .ioctl =        snd_pcm_lib_ioctl,
1344         .hw_params =    snd_via82xx_hw_params,
1345         .hw_free =      snd_via82xx_hw_free,
1346         .prepare =      snd_via8233_multi_prepare,
1347         .trigger =      snd_via82xx_pcm_trigger,
1348         .pointer =      snd_via8233_pcm_pointer,
1349         .page =         snd_pcm_sgbuf_ops_page,
1350 };
1351
1352 /* via823x capture callbacks */
1353 static struct snd_pcm_ops snd_via8233_capture_ops = {
1354         .open =         snd_via82xx_capture_open,
1355         .close =        snd_via82xx_pcm_close,
1356         .ioctl =        snd_pcm_lib_ioctl,
1357         .hw_params =    snd_via82xx_hw_params,
1358         .hw_free =      snd_via82xx_hw_free,
1359         .prepare =      snd_via8233_capture_prepare,
1360         .trigger =      snd_via82xx_pcm_trigger,
1361         .pointer =      snd_via8233_pcm_pointer,
1362         .page =         snd_pcm_sgbuf_ops_page,
1363 };
1364
1365
1366 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1367                         int shadow_pos, int direction)
1368 {
1369         chip->devs[idx].reg_offset = reg_offset;
1370         chip->devs[idx].shadow_shift = shadow_pos * 4;
1371         chip->devs[idx].direction = direction;
1372         chip->devs[idx].port = chip->port + reg_offset;
1373 }
1374
1375 /*
1376  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1377  */
1378 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1379 {
1380         struct snd_pcm *pcm;
1381         int i, err;
1382
1383         chip->playback_devno = 0;       /* x 4 */
1384         chip->multi_devno = 4;          /* x 1 */
1385         chip->capture_devno = 5;        /* x 2 */
1386         chip->num_devs = 7;
1387         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1388
1389         /* PCM #0:  4 DSX playbacks and 1 capture */
1390         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1391         if (err < 0)
1392                 return err;
1393         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1394         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1395         pcm->private_data = chip;
1396         strcpy(pcm->name, chip->card->shortname);
1397         chip->pcms[0] = pcm;
1398         /* set up playbacks */
1399         for (i = 0; i < 4; i++)
1400                 init_viadev(chip, i, 0x10 * i, i, 0);
1401         /* capture */
1402         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1403
1404         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1405                                               snd_dma_pci_data(chip->pci),
1406                                               64*1024, 128*1024);
1407
1408         /* PCM #1:  multi-channel playback and 2nd capture */
1409         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1410         if (err < 0)
1411                 return err;
1412         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1413         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1414         pcm->private_data = chip;
1415         strcpy(pcm->name, chip->card->shortname);
1416         chip->pcms[1] = pcm;
1417         /* set up playback */
1418         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1419         /* set up capture */
1420         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1421
1422         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1423                                               snd_dma_pci_data(chip->pci),
1424                                               64*1024, 128*1024);
1425         return 0;
1426 }
1427
1428 /*
1429  * create pcm instances for VIA8233A
1430  */
1431 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1432 {
1433         struct snd_pcm *pcm;
1434         int err;
1435
1436         chip->multi_devno = 0;
1437         chip->playback_devno = 1;
1438         chip->capture_devno = 2;
1439         chip->num_devs = 3;
1440         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1441
1442         /* PCM #0:  multi-channel playback and capture */
1443         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1444         if (err < 0)
1445                 return err;
1446         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1447         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1448         pcm->private_data = chip;
1449         strcpy(pcm->name, chip->card->shortname);
1450         chip->pcms[0] = pcm;
1451         /* set up playback */
1452         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1453         /* capture */
1454         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1455
1456         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1457                                               snd_dma_pci_data(chip->pci),
1458                                               64*1024, 128*1024);
1459
1460         /* SPDIF supported? */
1461         if (! ac97_can_spdif(chip->ac97))
1462                 return 0;
1463
1464         /* PCM #1:  DXS3 playback (for spdif) */
1465         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1466         if (err < 0)
1467                 return err;
1468         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1469         pcm->private_data = chip;
1470         strcpy(pcm->name, chip->card->shortname);
1471         chip->pcms[1] = pcm;
1472         /* set up playback */
1473         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1474
1475         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1476                                               snd_dma_pci_data(chip->pci),
1477                                               64*1024, 128*1024)
1478         return 0;
1479 }
1480
1481 /*
1482  * create a pcm instance for via686a/b
1483  */
1484 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1485 {
1486         struct snd_pcm *pcm;
1487         int err;
1488
1489         chip->playback_devno = 0;
1490         chip->capture_devno = 1;
1491         chip->num_devs = 2;
1492         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1493
1494         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1495         if (err < 0)
1496                 return err;
1497         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1498         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1499         pcm->private_data = chip;
1500         strcpy(pcm->name, chip->card->shortname);
1501         chip->pcms[0] = pcm;
1502         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1503         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1504
1505         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1506                                               snd_dma_pci_data(chip->pci),
1507                                               64*1024, 128*1024);
1508         return 0;
1509 }
1510
1511
1512 /*
1513  *  Mixer part
1514  */
1515
1516 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1517                                            struct snd_ctl_elem_info *uinfo)
1518 {
1519         /* formerly they were "Line" and "Mic", but it looks like that they
1520          * have nothing to do with the actual physical connections...
1521          */
1522         static char *texts[2] = {
1523                 "Input1", "Input2"
1524         };
1525         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1526         uinfo->count = 1;
1527         uinfo->value.enumerated.items = 2;
1528         if (uinfo->value.enumerated.item >= 2)
1529                 uinfo->value.enumerated.item = 1;
1530         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1531         return 0;
1532 }
1533
1534 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1535                                           struct snd_ctl_elem_value *ucontrol)
1536 {
1537         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1538         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1539         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1540         return 0;
1541 }
1542
1543 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1544                                           struct snd_ctl_elem_value *ucontrol)
1545 {
1546         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1547         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1548         u8 val, oval;
1549
1550         spin_lock_irq(&chip->reg_lock);
1551         oval = inb(port);
1552         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1553         if (ucontrol->value.enumerated.item[0])
1554                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1555         if (val != oval)
1556                 outb(val, port);
1557         spin_unlock_irq(&chip->reg_lock);
1558         return val != oval;
1559 }
1560
1561 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1562         .name = "Input Source Select",
1563         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1564         .info = snd_via8233_capture_source_info,
1565         .get = snd_via8233_capture_source_get,
1566         .put = snd_via8233_capture_source_put,
1567 };
1568
1569 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1570
1571 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1572                                       struct snd_ctl_elem_value *ucontrol)
1573 {
1574         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1575         u8 val;
1576
1577         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1578         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1579         return 0;
1580 }
1581
1582 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1583                                       struct snd_ctl_elem_value *ucontrol)
1584 {
1585         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1586         u8 val, oval;
1587
1588         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1589         val = oval & ~VIA8233_SPDIF_DX3;
1590         if (ucontrol->value.integer.value[0])
1591                 val |= VIA8233_SPDIF_DX3;
1592         /* save the spdif flag for rate filtering */
1593         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1594         if (val != oval) {
1595                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1596                 return 1;
1597         }
1598         return 0;
1599 }
1600
1601 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1602         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1603         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1604         .info = snd_via8233_dxs3_spdif_info,
1605         .get = snd_via8233_dxs3_spdif_get,
1606         .put = snd_via8233_dxs3_spdif_put,
1607 };
1608
1609 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1610                                        struct snd_ctl_elem_info *uinfo)
1611 {
1612         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1613         uinfo->count = 2;
1614         uinfo->value.integer.min = 0;
1615         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1616         return 0;
1617 }
1618
1619 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1620                                       struct snd_ctl_elem_value *ucontrol)
1621 {
1622         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1623         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1624
1625         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1626         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1627         return 0;
1628 }
1629
1630 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1631                                          struct snd_ctl_elem_value *ucontrol)
1632 {
1633         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1634         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1635         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1636         return 0;
1637 }
1638
1639 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1640                                       struct snd_ctl_elem_value *ucontrol)
1641 {
1642         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1643         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1644         unsigned long port = chip->port + 0x10 * idx;
1645         unsigned char val;
1646         int i, change = 0;
1647
1648         for (i = 0; i < 2; i++) {
1649                 val = ucontrol->value.integer.value[i];
1650                 if (val > VIA_DXS_MAX_VOLUME)
1651                         val = VIA_DXS_MAX_VOLUME;
1652                 val = VIA_DXS_MAX_VOLUME - val;
1653                 change |= val != chip->playback_volume[idx][i];
1654                 if (change) {
1655                         chip->playback_volume[idx][i] = val;
1656                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1657                 }
1658         }
1659         return change;
1660 }
1661
1662 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1663                                          struct snd_ctl_elem_value *ucontrol)
1664 {
1665         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1666         unsigned int idx;
1667         unsigned char val;
1668         int i, change = 0;
1669
1670         for (i = 0; i < 2; i++) {
1671                 val = ucontrol->value.integer.value[i];
1672                 if (val > VIA_DXS_MAX_VOLUME)
1673                         val = VIA_DXS_MAX_VOLUME;
1674                 val = VIA_DXS_MAX_VOLUME - val;
1675                 if (val != chip->playback_volume_c[i]) {
1676                         change = 1;
1677                         chip->playback_volume_c[i] = val;
1678                         for (idx = 0; idx < 4; idx++) {
1679                                 unsigned long port = chip->port + 0x10 * idx;
1680                                 chip->playback_volume[idx][i] = val;
1681                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1682                         }
1683                 }
1684         }
1685         return change;
1686 }
1687
1688 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -9450, 150, 1);
1689
1690 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1691         .name = "PCM Playback Volume",
1692         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1693         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1694                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1695         .info = snd_via8233_dxs_volume_info,
1696         .get = snd_via8233_pcmdxs_volume_get,
1697         .put = snd_via8233_pcmdxs_volume_put,
1698         .tlv = { .p = db_scale_dxs }
1699 };
1700
1701 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1702         .name = "VIA DXS Playback Volume",
1703         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1704         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1705                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1706         .count = 4,
1707         .info = snd_via8233_dxs_volume_info,
1708         .get = snd_via8233_dxs_volume_get,
1709         .put = snd_via8233_dxs_volume_put,
1710         .tlv = { .p = db_scale_dxs }
1711 };
1712
1713 /*
1714  */
1715
1716 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1717 {
1718         struct via82xx *chip = bus->private_data;
1719         chip->ac97_bus = NULL;
1720 }
1721
1722 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1723 {
1724         struct via82xx *chip = ac97->private_data;
1725         chip->ac97 = NULL;
1726 }
1727
1728 static struct ac97_quirk ac97_quirks[] = {
1729         {
1730                 .subvendor = 0x1106,
1731                 .subdevice = 0x4161,
1732                 .codec_id = 0x56494161, /* VT1612A */
1733                 .name = "Soltek SL-75DRV5",
1734                 .type = AC97_TUNE_NONE
1735         },
1736         {       /* FIXME: which codec? */
1737                 .subvendor = 0x1106,
1738                 .subdevice = 0x4161,
1739                 .name = "ASRock K7VT2",
1740                 .type = AC97_TUNE_HP_ONLY
1741         },
1742         {
1743                 .subvendor = 0x1019,
1744                 .subdevice = 0x0a81,
1745                 .name = "ECS K7VTA3",
1746                 .type = AC97_TUNE_HP_ONLY
1747         },
1748         {
1749                 .subvendor = 0x1019,
1750                 .subdevice = 0x0a85,
1751                 .name = "ECS L7VMM2",
1752                 .type = AC97_TUNE_HP_ONLY
1753         },
1754         {
1755                 .subvendor = 0x1019,
1756                 .subdevice = 0x1841,
1757                 .name = "ECS K7VTA3",
1758                 .type = AC97_TUNE_HP_ONLY
1759         },
1760         {
1761                 .subvendor = 0x1849,
1762                 .subdevice = 0x3059,
1763                 .name = "ASRock K7VM2",
1764                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1765         },
1766         {
1767                 .subvendor = 0x14cd,
1768                 .subdevice = 0x7002,
1769                 .name = "Unknown",
1770                 .type = AC97_TUNE_ALC_JACK
1771         },
1772         {
1773                 .subvendor = 0x1071,
1774                 .subdevice = 0x8590,
1775                 .name = "Mitac Mobo",
1776                 .type = AC97_TUNE_ALC_JACK
1777         },
1778         {
1779                 .subvendor = 0x161f,
1780                 .subdevice = 0x202b,
1781                 .name = "Arima Notebook",
1782                 .type = AC97_TUNE_HP_ONLY,
1783         },
1784         {
1785                 .subvendor = 0x161f,
1786                 .subdevice = 0x2032,
1787                 .name = "Targa Traveller 811",
1788                 .type = AC97_TUNE_HP_ONLY,
1789         },
1790         {
1791                 .subvendor = 0x161f,
1792                 .subdevice = 0x2032,
1793                 .name = "m680x",
1794                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1795         },
1796         {
1797                 .subvendor = 0x1297,
1798                 .subdevice = 0xa232,
1799                 .name = "Shuttle AK32VN",
1800                 .type = AC97_TUNE_HP_ONLY
1801         },
1802         { } /* terminator */
1803 };
1804
1805 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1806 {
1807         struct snd_ac97_template ac97;
1808         int err;
1809         static struct snd_ac97_bus_ops ops = {
1810                 .write = snd_via82xx_codec_write,
1811                 .read = snd_via82xx_codec_read,
1812                 .wait = snd_via82xx_codec_wait,
1813         };
1814
1815         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1816                 return err;
1817         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1818         chip->ac97_bus->clock = chip->ac97_clock;
1819
1820         memset(&ac97, 0, sizeof(ac97));
1821         ac97.private_data = chip;
1822         ac97.private_free = snd_via82xx_mixer_free_ac97;
1823         ac97.pci = chip->pci;
1824         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1825         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1826                 return err;
1827
1828         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1829
1830         if (chip->chip_type != TYPE_VIA686) {
1831                 /* use slot 10/11 */
1832                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1833         }
1834
1835         return 0;
1836 }
1837
1838 #ifdef SUPPORT_JOYSTICK
1839 #define JOYSTICK_ADDR   0x200
1840 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1841 {
1842         struct gameport *gp;
1843         struct resource *r;
1844
1845         if (!joystick)
1846                 return -ENODEV;
1847
1848         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1849         if (!r) {
1850                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1851                        JOYSTICK_ADDR);
1852                 return -EBUSY;
1853         }
1854
1855         chip->gameport = gp = gameport_allocate_port();
1856         if (!gp) {
1857                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1858                 release_and_free_resource(r);
1859                 return -ENOMEM;
1860         }
1861
1862         gameport_set_name(gp, "VIA686 Gameport");
1863         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1864         gameport_set_dev_parent(gp, &chip->pci->dev);
1865         gp->io = JOYSTICK_ADDR;
1866         gameport_set_port_data(gp, r);
1867
1868         /* Enable legacy joystick port */
1869         *legacy |= VIA_FUNC_ENABLE_GAME;
1870         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1871
1872         gameport_register_port(chip->gameport);
1873
1874         return 0;
1875 }
1876
1877 static void snd_via686_free_gameport(struct via82xx *chip)
1878 {
1879         if (chip->gameport) {
1880                 struct resource *r = gameport_get_port_data(chip->gameport);
1881
1882                 gameport_unregister_port(chip->gameport);
1883                 chip->gameport = NULL;
1884                 release_and_free_resource(r);
1885         }
1886 }
1887 #else
1888 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1889 {
1890         return -ENOSYS;
1891 }
1892 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1893 #endif
1894
1895
1896 /*
1897  *
1898  */
1899
1900 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1901 {
1902         int i, err, caps;
1903         unsigned char val;
1904
1905         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1906         for (i = 0; i < caps; i++) {
1907                 snd_via8233_capture_source.index = i;
1908                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1909                 if (err < 0)
1910                         return err;
1911         }
1912         if (ac97_can_spdif(chip->ac97)) {
1913                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1914                 if (err < 0)
1915                         return err;
1916         }
1917         if (chip->chip_type != TYPE_VIA8233A) {
1918                 /* when no h/w PCM volume control is found, use DXS volume control
1919                  * as the PCM vol control
1920                  */
1921                 struct snd_ctl_elem_id sid;
1922                 memset(&sid, 0, sizeof(sid));
1923                 strcpy(sid.name, "PCM Playback Volume");
1924                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1925                 if (! snd_ctl_find_id(chip->card, &sid)) {
1926                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1927                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1928                         if (err < 0)
1929                                 return err;
1930                 }
1931                 else /* Using DXS when PCM emulation is enabled is really weird */
1932                 {
1933                         /* Standalone DXS controls */
1934                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1935                         if (err < 0)
1936                                 return err;
1937                 }
1938         }
1939         /* select spdif data slot 10/11 */
1940         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1941         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1942         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1943         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1944
1945         return 0;
1946 }
1947
1948 static int __devinit snd_via686_init_misc(struct via82xx *chip)
1949 {
1950         unsigned char legacy, legacy_cfg;
1951         int rev_h = 0;
1952
1953         legacy = chip->old_legacy;
1954         legacy_cfg = chip->old_legacy_cfg;
1955         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1956         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1957         if (chip->revision >= VIA_REV_686_H) {
1958                 rev_h = 1;
1959                 if (mpu_port >= 0x200) {        /* force MIDI */
1960                         mpu_port &= 0xfffc;
1961                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1962 #ifdef CONFIG_PM
1963                         chip->mpu_port_saved = mpu_port;
1964 #endif
1965                 } else {
1966                         mpu_port = pci_resource_start(chip->pci, 2);
1967                 }
1968         } else {
1969                 switch (mpu_port) {     /* force MIDI */
1970                 case 0x300:
1971                 case 0x310:
1972                 case 0x320:
1973                 case 0x330:
1974                         legacy_cfg &= ~(3 << 2);
1975                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1976                         break;
1977                 default:                        /* no, use BIOS settings */
1978                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1979                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1980                         break;
1981                 }
1982         }
1983         if (mpu_port >= 0x200 &&
1984             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1985             != NULL) {
1986                 if (rev_h)
1987                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1988                 legacy |= VIA_FUNC_ENABLE_MIDI;
1989         } else {
1990                 if (rev_h)
1991                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1992                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1993                 mpu_port = 0;
1994         }
1995
1996         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1997         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1998         if (chip->mpu_res) {
1999                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2000                                         mpu_port, MPU401_INFO_INTEGRATED,
2001                                         chip->irq, 0, &chip->rmidi) < 0) {
2002                         printk(KERN_WARNING "unable to initialize MPU-401"
2003                                " at 0x%lx, skipping\n", mpu_port);
2004                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2005                 } else {
2006                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2007                 }
2008                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2009         }
2010
2011         snd_via686_create_gameport(chip, &legacy);
2012
2013 #ifdef CONFIG_PM
2014         chip->legacy_saved = legacy;
2015         chip->legacy_cfg_saved = legacy_cfg;
2016 #endif
2017
2018         return 0;
2019 }
2020
2021
2022 /*
2023  * proc interface
2024  */
2025 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2026                                   struct snd_info_buffer *buffer)
2027 {
2028         struct via82xx *chip = entry->private_data;
2029         int i;
2030
2031         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2032         for (i = 0; i < 0xa0; i += 4) {
2033                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2034         }
2035 }
2036
2037 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2038 {
2039         struct snd_info_entry *entry;
2040
2041         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2042                 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2043 }
2044
2045 /*
2046  *
2047  */
2048
2049 static int snd_via82xx_chip_init(struct via82xx *chip)
2050 {
2051         unsigned int val;
2052         unsigned long end_time;
2053         unsigned char pval;
2054
2055 #if 0 /* broken on K7M? */
2056         if (chip->chip_type == TYPE_VIA686)
2057                 /* disable all legacy ports */
2058                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2059 #endif
2060         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2061         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2062                 /* deassert ACLink reset, force SYNC */
2063                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2064                                       VIA_ACLINK_CTRL_ENABLE |
2065                                       VIA_ACLINK_CTRL_RESET |
2066                                       VIA_ACLINK_CTRL_SYNC);
2067                 udelay(100);
2068 #if 1 /* FIXME: should we do full reset here for all chip models? */
2069                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2070                 udelay(100);
2071 #else
2072                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2073                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2074                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2075                 udelay(2);
2076 #endif
2077                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2078                 /* note - FM data out has trouble with non VRA codecs !! */
2079                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2080                 udelay(100);
2081         }
2082
2083         /* Make sure VRA is enabled, in case we didn't do a
2084          * complete codec reset, above */
2085         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2086         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2087                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2088                 /* note - FM data out has trouble with non VRA codecs !! */
2089                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2090                 udelay(100);
2091         }
2092
2093         /* wait until codec ready */
2094         end_time = jiffies + msecs_to_jiffies(750);
2095         do {
2096                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2097                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2098                         break;
2099                 schedule_timeout_uninterruptible(1);
2100         } while (time_before(jiffies, end_time));
2101
2102         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2103                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2104
2105 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2106         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2107                                  VIA_REG_AC97_SECONDARY_VALID |
2108                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2109         end_time = jiffies + msecs_to_jiffies(750);
2110         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2111                                  VIA_REG_AC97_SECONDARY_VALID |
2112                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2113         do {
2114                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2115                         chip->ac97_secondary = 1;
2116                         goto __ac97_ok2;
2117                 }
2118                 schedule_timeout_uninterruptible(1);
2119         } while (time_before(jiffies, end_time));
2120         /* This is ok, the most of motherboards have only one codec */
2121
2122       __ac97_ok2:
2123 #endif
2124
2125         if (chip->chip_type == TYPE_VIA686) {
2126                 /* route FM trap to IRQ, disable FM trap */
2127                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2128                 /* disable all GPI interrupts */
2129                 outl(0, VIAREG(chip, GPI_INTR));
2130         }
2131
2132         if (chip->chip_type != TYPE_VIA686) {
2133                 /* Workaround for Award BIOS bug:
2134                  * DXS channels don't work properly with VRA if MC97 is disabled.
2135                  */
2136                 struct pci_dev *pci;
2137                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2138                 if (pci) {
2139                         unsigned char data;
2140                         pci_read_config_byte(pci, 0x44, &data);
2141                         pci_write_config_byte(pci, 0x44, data | 0x40);
2142                         pci_dev_put(pci);
2143                 }
2144         }
2145
2146         if (chip->chip_type != TYPE_VIA8233A) {
2147                 int i, idx;
2148                 for (idx = 0; idx < 4; idx++) {
2149                         unsigned long port = chip->port + 0x10 * idx;
2150                         for (i = 0; i < 2; i++) {
2151                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2152                                 outb(chip->playback_volume_c[i],
2153                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2154                         }
2155                 }
2156         }
2157
2158         return 0;
2159 }
2160
2161 #ifdef CONFIG_PM
2162 /*
2163  * power management
2164  */
2165 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2166 {
2167         struct snd_card *card = pci_get_drvdata(pci);
2168         struct via82xx *chip = card->private_data;
2169         int i;
2170
2171         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2172         for (i = 0; i < 2; i++)
2173                 snd_pcm_suspend_all(chip->pcms[i]);
2174         for (i = 0; i < chip->num_devs; i++)
2175                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2176         synchronize_irq(chip->irq);
2177         snd_ac97_suspend(chip->ac97);
2178
2179         /* save misc values */
2180         if (chip->chip_type != TYPE_VIA686) {
2181                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2182                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2183                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2184         }
2185
2186         pci_disable_device(pci);
2187         pci_save_state(pci);
2188         pci_set_power_state(pci, pci_choose_state(pci, state));
2189         return 0;
2190 }
2191
2192 static int snd_via82xx_resume(struct pci_dev *pci)
2193 {
2194         struct snd_card *card = pci_get_drvdata(pci);
2195         struct via82xx *chip = card->private_data;
2196         int i;
2197
2198         pci_set_power_state(pci, PCI_D0);
2199         pci_restore_state(pci);
2200         if (pci_enable_device(pci) < 0) {
2201                 printk(KERN_ERR "via82xx: pci_enable_device failed, "
2202                        "disabling device\n");
2203                 snd_card_disconnect(card);
2204                 return -EIO;
2205         }
2206         pci_set_master(pci);
2207
2208         snd_via82xx_chip_init(chip);
2209
2210         if (chip->chip_type == TYPE_VIA686) {
2211                 if (chip->mpu_port_saved)
2212                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2213                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2214                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2215         } else {
2216                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2217                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2218                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2219         }
2220
2221         snd_ac97_resume(chip->ac97);
2222
2223         for (i = 0; i < chip->num_devs; i++)
2224                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2225
2226         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2227         return 0;
2228 }
2229 #endif /* CONFIG_PM */
2230
2231 static int snd_via82xx_free(struct via82xx *chip)
2232 {
2233         unsigned int i;
2234
2235         if (chip->irq < 0)
2236                 goto __end_hw;
2237         /* disable interrupts */
2238         for (i = 0; i < chip->num_devs; i++)
2239                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2240
2241         if (chip->irq >= 0)
2242                 free_irq(chip->irq, chip);
2243  __end_hw:
2244         release_and_free_resource(chip->mpu_res);
2245         pci_release_regions(chip->pci);
2246
2247         if (chip->chip_type == TYPE_VIA686) {
2248                 snd_via686_free_gameport(chip);
2249                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2250                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2251         }
2252         pci_disable_device(chip->pci);
2253         kfree(chip);
2254         return 0;
2255 }
2256
2257 static int snd_via82xx_dev_free(struct snd_device *device)
2258 {
2259         struct via82xx *chip = device->device_data;
2260         return snd_via82xx_free(chip);
2261 }
2262
2263 static int __devinit snd_via82xx_create(struct snd_card *card,
2264                                         struct pci_dev *pci,
2265                                         int chip_type,
2266                                         int revision,
2267                                         unsigned int ac97_clock,
2268                                         struct via82xx ** r_via)
2269 {
2270         struct via82xx *chip;
2271         int err;
2272         static struct snd_device_ops ops = {
2273                 .dev_free =     snd_via82xx_dev_free,
2274         };
2275
2276         if ((err = pci_enable_device(pci)) < 0)
2277                 return err;
2278
2279         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2280                 pci_disable_device(pci);
2281                 return -ENOMEM;
2282         }
2283
2284         chip->chip_type = chip_type;
2285         chip->revision = revision;
2286
2287         spin_lock_init(&chip->reg_lock);
2288         spin_lock_init(&chip->rates[0].lock);
2289         spin_lock_init(&chip->rates[1].lock);
2290         chip->card = card;
2291         chip->pci = pci;
2292         chip->irq = -1;
2293
2294         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2295         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2296         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2297                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2298
2299         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2300                 kfree(chip);
2301                 pci_disable_device(pci);
2302                 return err;
2303         }
2304         chip->port = pci_resource_start(pci, 0);
2305         if (request_irq(pci->irq,
2306                         chip_type == TYPE_VIA8233 ?
2307                         snd_via8233_interrupt : snd_via686_interrupt,
2308                         IRQF_SHARED,
2309                         card->driver, chip)) {
2310                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2311                 snd_via82xx_free(chip);
2312                 return -EBUSY;
2313         }
2314         chip->irq = pci->irq;
2315         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2316                 chip->ac97_clock = ac97_clock;
2317         synchronize_irq(chip->irq);
2318
2319         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2320                 snd_via82xx_free(chip);
2321                 return err;
2322         }
2323
2324         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2325                 snd_via82xx_free(chip);
2326                 return err;
2327         }
2328
2329         /* The 8233 ac97 controller does not implement the master bit
2330          * in the pci command register. IMHO this is a violation of the PCI spec.
2331          * We call pci_set_master here because it does not hurt. */
2332         pci_set_master(pci);
2333
2334         snd_card_set_dev(card, &pci->dev);
2335
2336         *r_via = chip;
2337         return 0;
2338 }
2339
2340 struct via823x_info {
2341         int revision;
2342         char *name;
2343         int type;
2344 };
2345 static struct via823x_info via823x_cards[] __devinitdata = {
2346         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2347         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2348         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2349         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2350         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2351         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2352         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2353 };
2354
2355 /*
2356  * auto detection of DXS channel supports.
2357  */
2358
2359 static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2360         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2361         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2362         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2363         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2364         SND_PCI_QUIRK(0x1019, 0, "ESC K8", VIA_DXS_SRC),
2365         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2366         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2367         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2368         SND_PCI_QUIRK(0x1043, 0, "ASUS A7/A8", VIA_DXS_NO_VRA),
2369         SND_PCI_QUIRK(0x1071, 0, "Diverse Notebook", VIA_DXS_NO_VRA),
2370         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2371         SND_PCI_QUIRK(0x1106, 0, "ASRock", VIA_DXS_SRC),
2372         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2373         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2374         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2375         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2376         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2377         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2378         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2379         SND_PCI_QUIRK(0x1462, 0, "MSI Mobo", VIA_DXS_SRC),
2380         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2381         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2382         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2383         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2384         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2385         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2386         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2387         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2388         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2389         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2390         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2391         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2392         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2393         SND_PCI_QUIRK(0x1695, 0, "EPoX mobo", VIA_DXS_SRC),
2394         SND_PCI_QUIRK(0x16f3, 0, "Jetway K8", VIA_DXS_SRC),
2395         SND_PCI_QUIRK(0x1734, 0, "FSC Laptop", VIA_DXS_SRC),
2396         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2397         SND_PCI_QUIRK(0x1849, 0, "ASRock mobo", VIA_DXS_SRC),
2398         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2399         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2400         { } /* terminator */
2401 };
2402
2403 static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2404 {
2405         const struct snd_pci_quirk *w;
2406
2407         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2408         if (w) {
2409                 snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2410                             w->name);
2411                 return w->value;
2412         }
2413
2414         /* for newer revision, default to DXS_SRC */
2415         if (revision >= VIA_REV_8235)
2416                 return VIA_DXS_SRC;
2417
2418         /*
2419          * not detected, try 48k rate only to be sure.
2420          */
2421         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2422         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2423         printk(KERN_INFO "         and report if it works on your machine.\n");
2424         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2425         return VIA_DXS_48K;
2426 };
2427
2428 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2429                                        const struct pci_device_id *pci_id)
2430 {
2431         struct snd_card *card;
2432         struct via82xx *chip;
2433         int chip_type = 0, card_type;
2434         unsigned int i;
2435         int err;
2436
2437         card = snd_card_new(index, id, THIS_MODULE, 0);
2438         if (card == NULL)
2439                 return -ENOMEM;
2440
2441         card_type = pci_id->driver_data;
2442         switch (card_type) {
2443         case TYPE_CARD_VIA686:
2444                 strcpy(card->driver, "VIA686A");
2445                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2446                 chip_type = TYPE_VIA686;
2447                 break;
2448         case TYPE_CARD_VIA8233:
2449                 chip_type = TYPE_VIA8233;
2450                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2451                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2452                         if (pci->revision == via823x_cards[i].revision) {
2453                                 chip_type = via823x_cards[i].type;
2454                                 strcpy(card->shortname, via823x_cards[i].name);
2455                                 break;
2456                         }
2457                 }
2458                 if (chip_type != TYPE_VIA8233A) {
2459                         if (dxs_support == VIA_DXS_AUTO)
2460                                 dxs_support = check_dxs_list(pci, pci->revision);
2461                         /* force to use VIA8233 or 8233A model according to
2462                          * dxs_support module option
2463                          */
2464                         if (dxs_support == VIA_DXS_DISABLE)
2465                                 chip_type = TYPE_VIA8233A;
2466                         else
2467                                 chip_type = TYPE_VIA8233;
2468                 }
2469                 if (chip_type == TYPE_VIA8233A)
2470                         strcpy(card->driver, "VIA8233A");
2471                 else if (pci->revision >= VIA_REV_8237)
2472                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2473                 else
2474                         strcpy(card->driver, "VIA8233");
2475                 break;
2476         default:
2477                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2478                 err = -EINVAL;
2479                 goto __error;
2480         }
2481
2482         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2483                                       ac97_clock, &chip)) < 0)
2484                 goto __error;
2485         card->private_data = chip;
2486         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2487                 goto __error;
2488
2489         if (chip_type == TYPE_VIA686) {
2490                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2491                     (err = snd_via686_init_misc(chip)) < 0)
2492                         goto __error;
2493         } else {
2494                 if (chip_type == TYPE_VIA8233A) {
2495                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2496                                 goto __error;
2497                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2498                 } else {
2499                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2500                                 goto __error;
2501                         if (dxs_support == VIA_DXS_48K)
2502                                 chip->dxs_fixed = 1;
2503                         else if (dxs_support == VIA_DXS_NO_VRA)
2504                                 chip->no_vra = 1;
2505                         else if (dxs_support == VIA_DXS_SRC) {
2506                                 chip->no_vra = 1;
2507                                 chip->dxs_src = 1;
2508                         }
2509                 }
2510                 if ((err = snd_via8233_init_misc(chip)) < 0)
2511                         goto __error;
2512         }
2513
2514         /* disable interrupts */
2515         for (i = 0; i < chip->num_devs; i++)
2516                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2517
2518         snprintf(card->longname, sizeof(card->longname),
2519                  "%s with %s at %#lx, irq %d", card->shortname,
2520                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2521
2522         snd_via82xx_proc_init(chip);
2523
2524         if ((err = snd_card_register(card)) < 0) {
2525                 snd_card_free(card);
2526                 return err;
2527         }
2528         pci_set_drvdata(pci, card);
2529         return 0;
2530
2531  __error:
2532         snd_card_free(card);
2533         return err;
2534 }
2535
2536 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2537 {
2538         snd_card_free(pci_get_drvdata(pci));
2539         pci_set_drvdata(pci, NULL);
2540 }
2541
2542 static struct pci_driver driver = {
2543         .name = "VIA 82xx Audio",
2544         .id_table = snd_via82xx_ids,
2545         .probe = snd_via82xx_probe,
2546         .remove = __devexit_p(snd_via82xx_remove),
2547 #ifdef CONFIG_PM
2548         .suspend = snd_via82xx_suspend,
2549         .resume = snd_via82xx_resume,
2550 #endif
2551 };
2552
2553 static int __init alsa_card_via82xx_init(void)
2554 {
2555         return pci_register_driver(&driver);
2556 }
2557
2558 static void __exit alsa_card_via82xx_exit(void)
2559 {
2560         pci_unregister_driver(&driver);
2561 }
2562
2563 module_init(alsa_card_via82xx_init)
2564 module_exit(alsa_card_via82xx_exit)