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

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@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 #define VIA_MAX_BUFSIZE (1<<24)
 317
 318 struct viadev {
 319         unsigned int reg_offset;
 320         unsigned long port;
 321         int direction;  /* playback = 0, capture = 1 */
 322         struct snd_pcm_substream *substream;
 323         int running;
 324         unsigned int tbl_entries; /* # descriptors */
 325         struct snd_dma_buffer table;
 326         struct snd_via_sg_table *idx_table;
 327         /* for recovery from the unexpected pointer */
 328         unsigned int lastpos;
 329         unsigned int fragsize;
 330         unsigned int bufsize;
 331         unsigned int bufsize2;
 332         int hwptr_done;         /* processed frame position in the buffer */
 333         int in_interrupt;
 334         int shadow_shift;
 335 };
 336
 337
 338 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 339 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 340
 341 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 342
 343 struct via_rate_lock {
 344         spinlock_t lock;
 345         int rate;
 346         int used;
 347 };
 348
 349 struct via82xx {
 350         int irq;
 351
 352         unsigned long port;
 353         struct resource *mpu_res;
 354         int chip_type;
 355         unsigned char revision;
 356
 357         unsigned char old_legacy;
 358         unsigned char old_legacy_cfg;
 359 #ifdef CONFIG_PM
 360         unsigned char legacy_saved;
 361         unsigned char legacy_cfg_saved;
 362         unsigned char spdif_ctrl_saved;
 363         unsigned char capture_src_saved[2];
 364         unsigned int mpu_port_saved;
 365 #endif
 366
 367         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 368         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 369
 370         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 371
 372         struct pci_dev *pci;
 373         struct snd_card *card;
 374
 375         unsigned int num_devs;
 376         unsigned int playback_devno, multi_devno, capture_devno;
 377         struct viadev devs[VIA_MAX_DEVS];
 378         struct via_rate_lock rates[2]; /* playback and capture */
 379         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 380         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 381         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 382         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 383
 384         struct snd_pcm *pcms[2];
 385         struct snd_rawmidi *rmidi;
 386
 387         struct snd_ac97_bus *ac97_bus;
 388         struct snd_ac97 *ac97;
 389         unsigned int ac97_clock;
 390         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 391
 392         spinlock_t reg_lock;
 393         struct snd_info_entry *proc_entry;
 394
 395 #ifdef SUPPORT_JOYSTICK
 396         struct gameport *gameport;
 397 #endif
 398 };
 399
 400 static struct pci_device_id snd_via82xx_ids[] = {
 401         /* 0x1106, 0x3058 */
 402         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
 403         /* 0x1106, 0x3059 */
 404         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
 405         { 0, }
 406 };
 407
 408 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 409
 410 /*
 411  */
 412
 413 /*
 414  * allocate and initialize the descriptor buffers
 415  * periods = number of periods
 416  * fragsize = period size in bytes
 417  */
 418 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 419                            struct pci_dev *pci,
 420                            unsigned int periods, unsigned int fragsize)
 421 {
 422         unsigned int i, idx, ofs, rest;
 423         struct via82xx *chip = snd_pcm_substream_chip(substream);
 424
 425         if (dev->table.area == NULL) {
 426                 /* the start of each lists must be aligned to 8 bytes,
 427                  * but the kernel pages are much bigger, so we don't care
 428                  */
 429                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 430                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 431                                         &dev->table) < 0)
 432                         return -ENOMEM;
 433         }
 434         if (! dev->idx_table) {
 435                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 436                 if (! dev->idx_table)
 437                         return -ENOMEM;
 438         }
 439
 440         /* fill the entries */
 441         idx = 0;
 442         ofs = 0;
 443         for (i = 0; i < periods; i++) {
 444                 rest = fragsize;
 445                 /* fill descriptors for a period.
 446                  * a period can be split to several descriptors if it's
 447                  * over page boundary.
 448                  */
 449                 do {
 450                         unsigned int r;
 451                         unsigned int flag;
 452                         unsigned int addr;
 453
 454                         if (idx >= VIA_TABLE_SIZE) {
 455                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 456                                 return -EINVAL;
 457                         }
 458                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 459                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 460                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 461                         rest -= r;
 462                         if (! rest) {
 463                                 if (i == periods - 1)
 464                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 465                                 else
 466                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 467                         } else
 468                                 flag = 0; /* period continues to the next */
 469                         /*
 470                         printk(KERN_DEBUG "via: tbl %d: at %d  size %d "
 471                                "(rest %d)\n", idx, ofs, r, rest);
 472                         */
 473                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 474                         dev->idx_table[idx].offset = ofs;
 475                         dev->idx_table[idx].size = r;
 476                         ofs += r;
 477                         idx++;
 478                 } while (rest > 0);
 479         }
 480         dev->tbl_entries = idx;
 481         dev->bufsize = periods * fragsize;
 482         dev->bufsize2 = dev->bufsize / 2;
 483         dev->fragsize = fragsize;
 484         return 0;
 485 }
 486
 487
 488 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 489                            struct pci_dev *pci)
 490 {
 491         if (dev->table.area) {
 492                 snd_dma_free_pages(&dev->table);
 493                 dev->table.area = NULL;
 494         }
 495         kfree(dev->idx_table);
 496         dev->idx_table = NULL;
 497         return 0;
 498 }
 499
 500 /*
 501  *  Basic I/O
 502  */
 503
 504 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 505 {
 506         return inl(VIAREG(chip, AC97));
 507 }
 508
 509 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 510 {
 511         outl(val, VIAREG(chip, AC97));
 512 }
 513
 514 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 515 {
 516         unsigned int timeout = 1000;    /* 1ms */
 517         unsigned int val;
 518
 519         while (timeout-- > 0) {
 520                 udelay(1);
 521                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 522                         return val & 0xffff;
 523         }
 524         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 525                    secondary, snd_via82xx_codec_xread(chip));
 526         return -EIO;
 527 }
 528
 529 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 530 {
 531         unsigned int timeout = 1000;    /* 1ms */
 532         unsigned int val, val1;
 533         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 534                                          VIA_REG_AC97_SECONDARY_VALID;
 535
 536         while (timeout-- > 0) {
 537                 val = snd_via82xx_codec_xread(chip);
 538                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 539                 if (val1 == stat)
 540                         return val & 0xffff;
 541                 udelay(1);
 542         }
 543         return -EIO;
 544 }
 545
 546 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 547 {
 548         struct via82xx *chip = ac97->private_data;
 549         int err;
 550         err = snd_via82xx_codec_ready(chip, ac97->num);
 551         /* here we need to wait fairly for long time.. */
 552         msleep(500);
 553 }
 554
 555 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 556                                     unsigned short reg,
 557                                     unsigned short val)
 558 {
 559         struct via82xx *chip = ac97->private_data;
 560         unsigned int xval;
 561
 562         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 563         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 564         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 565         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 566         snd_via82xx_codec_xwrite(chip, xval);
 567         snd_via82xx_codec_ready(chip, ac97->num);
 568 }
 569
 570 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 571 {
 572         struct via82xx *chip = ac97->private_data;
 573         unsigned int xval, val = 0xffff;
 574         int again = 0;
 575
 576         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 577         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 578         xval |= VIA_REG_AC97_READ;
 579         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 580         while (1) {
 581                 if (again++ > 3) {
 582                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 583                                    ac97->num, snd_via82xx_codec_xread(chip));
 584                         return 0xffff;
 585                 }
 586                 snd_via82xx_codec_xwrite(chip, xval);
 587                 udelay (20);
 588                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 589                         udelay(25);
 590                         val = snd_via82xx_codec_xread(chip);
 591                         break;
 592                 }
 593         }
 594         return val & 0xffff;
 595 }
 596
 597 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 598 {
 599         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 600              VIADEV_REG(viadev, OFFSET_CONTROL));
 601         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 602         udelay(50);
 603         /* disable interrupts */
 604         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 605         /* clear interrupts */
 606         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 607         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 608         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 609         viadev->lastpos = 0;
 610         viadev->hwptr_done = 0;
 611 }
 612
 613
 614 /*
 615  *  Interrupt handler
 616  *  Used for 686 and 8233A
 617  */
 618 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 619 {
 620         struct via82xx *chip = dev_id;
 621         unsigned int status;
 622         unsigned int i;
 623
 624         status = inl(VIAREG(chip, SGD_SHADOW));
 625         if (! (status & chip->intr_mask)) {
 626                 if (chip->rmidi)
 627                         /* check mpu401 interrupt */
 628                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 629                 return IRQ_NONE;
 630         }
 631
 632         /* check status for each stream */
 633         spin_lock(&chip->reg_lock);
 634         for (i = 0; i < chip->num_devs; i++) {
 635                 struct viadev *viadev = &chip->devs[i];
 636                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 637                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 638                         continue;
 639                 if (viadev->substream && viadev->running) {
 640                         /*
 641                          * Update hwptr_done based on 'period elapsed'
 642                          * interrupts. We'll use it, when the chip returns 0
 643                          * for OFFSET_CURR_COUNT.
 644                          */
 645                         if (c_status & VIA_REG_STAT_EOL)
 646                                 viadev->hwptr_done = 0;
 647                         else
 648                                 viadev->hwptr_done += viadev->fragsize;
 649                         viadev->in_interrupt = c_status;
 650                         spin_unlock(&chip->reg_lock);
 651                         snd_pcm_period_elapsed(viadev->substream);
 652                         spin_lock(&chip->reg_lock);
 653                         viadev->in_interrupt = 0;
 654                 }
 655                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 656         }
 657         spin_unlock(&chip->reg_lock);
 658         return IRQ_HANDLED;
 659 }
 660
 661 /*
 662  *  Interrupt handler
 663  */
 664 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 665 {
 666         struct via82xx *chip = dev_id;
 667         unsigned int status;
 668         unsigned int i;
 669         int irqreturn = 0;
 670
 671         /* check status for each stream */
 672         spin_lock(&chip->reg_lock);
 673         status = inl(VIAREG(chip, SGD_SHADOW));
 674
 675         for (i = 0; i < chip->num_devs; i++) {
 676                 struct viadev *viadev = &chip->devs[i];
 677                 struct snd_pcm_substream *substream;
 678                 unsigned char c_status, shadow_status;
 679
 680                 shadow_status = (status >> viadev->shadow_shift) &
 681                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 682                          VIA_REG_STAT_FLAG);
 683                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 684                 if (!c_status)
 685                         continue;
 686
 687                 substream = viadev->substream;
 688                 if (substream && viadev->running) {
 689                         /*
 690                          * Update hwptr_done based on 'period elapsed'
 691                          * interrupts. We'll use it, when the chip returns 0
 692                          * for OFFSET_CURR_COUNT.
 693                          */
 694                         if (c_status & VIA_REG_STAT_EOL)
 695                                 viadev->hwptr_done = 0;
 696                         else
 697                                 viadev->hwptr_done += viadev->fragsize;
 698                         viadev->in_interrupt = c_status;
 699                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 700                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 701                         spin_unlock(&chip->reg_lock);
 702
 703                         snd_pcm_period_elapsed(substream);
 704
 705                         spin_lock(&chip->reg_lock);
 706                         viadev->in_interrupt = 0;
 707                 }
 708                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 709                 irqreturn = 1;
 710         }
 711         spin_unlock(&chip->reg_lock);
 712         return IRQ_RETVAL(irqreturn);
 713 }
 714
 715 /*
 716  *  PCM callbacks
 717  */
 718
 719 /*
 720  * trigger callback
 721  */
 722 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 723 {
 724         struct via82xx *chip = snd_pcm_substream_chip(substream);
 725         struct viadev *viadev = substream->runtime->private_data;
 726         unsigned char val;
 727
 728         if (chip->chip_type != TYPE_VIA686)
 729                 val = VIA_REG_CTRL_INT;
 730         else
 731                 val = 0;
 732         switch (cmd) {
 733         case SNDRV_PCM_TRIGGER_START:
 734         case SNDRV_PCM_TRIGGER_RESUME:
 735                 val |= VIA_REG_CTRL_START;
 736                 viadev->running = 1;
 737                 break;
 738         case SNDRV_PCM_TRIGGER_STOP:
 739         case SNDRV_PCM_TRIGGER_SUSPEND:
 740                 val = VIA_REG_CTRL_TERMINATE;
 741                 viadev->running = 0;
 742                 break;
 743         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 744                 val |= VIA_REG_CTRL_PAUSE;
 745                 viadev->running = 0;
 746                 break;
 747         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 748                 viadev->running = 1;
 749                 break;
 750         default:
 751                 return -EINVAL;
 752         }
 753         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 754         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 755                 snd_via82xx_channel_reset(chip, viadev);
 756         return 0;
 757 }
 758
 759
 760 /*
 761  * pointer callbacks
 762  */
 763
 764 /*
 765  * calculate the linear position at the given sg-buffer index and the rest count
 766  */
 767
 768 #define check_invalid_pos(viadev,pos) \
 769         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 770                                      viadev->lastpos < viadev->bufsize2))
 771
 772 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 773                                            unsigned int count)
 774 {
 775         unsigned int size, base, res;
 776
 777         size = viadev->idx_table[idx].size;
 778         base = viadev->idx_table[idx].offset;
 779         res = base + size - count;
 780         if (res >= viadev->bufsize)
 781                 res -= viadev->bufsize;
 782
 783         /* check the validity of the calculated position */
 784         if (size < count) {
 785                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 786                            (int)size, (int)count);
 787                 res = viadev->lastpos;
 788         } else {
 789                 if (! count) {
 790                         /* Some mobos report count = 0 on the DMA boundary,
 791                          * i.e. count = size indeed.
 792                          * Let's check whether this step is above the expected size.
 793                          */
 794                         int delta = res - viadev->lastpos;
 795                         if (delta < 0)
 796                                 delta += viadev->bufsize;
 797                         if ((unsigned int)delta > viadev->fragsize)
 798                                 res = base;
 799                 }
 800                 if (check_invalid_pos(viadev, res)) {
 801 #ifdef POINTER_DEBUG
 802                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 803                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 804                                "count = 0x%x\n", idx, viadev->tbl_entries,
 805                                viadev->lastpos, viadev->bufsize2,
 806                                viadev->idx_table[idx].offset,
 807                                viadev->idx_table[idx].size, count);
 808 #endif
 809                         /* count register returns full size when end of buffer is reached */
 810                         res = base + size;
 811                         if (check_invalid_pos(viadev, res)) {
 812                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 813                                            "using last valid pointer\n");
 814                                 res = viadev->lastpos;
 815                         }
 816                 }
 817         }
 818         return res;
 819 }
 820
 821 /*
 822  * get the current pointer on via686
 823  */
 824 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 825 {
 826         struct via82xx *chip = snd_pcm_substream_chip(substream);
 827         struct viadev *viadev = substream->runtime->private_data;
 828         unsigned int idx, ptr, count, res;
 829
 830         if (snd_BUG_ON(!viadev->tbl_entries))
 831                 return 0;
 832         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 833                 return 0;
 834
 835         spin_lock(&chip->reg_lock);
 836         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 837         /* The via686a does not have the current index register,
 838          * so we need to calculate the index from CURR_PTR.
 839          */
 840         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 841         if (ptr <= (unsigned int)viadev->table.addr)
 842                 idx = 0;
 843         else /* CURR_PTR holds the address + 8 */
 844                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 845         res = calc_linear_pos(viadev, idx, count);
 846         viadev->lastpos = res; /* remember the last position */
 847         spin_unlock(&chip->reg_lock);
 848
 849         return bytes_to_frames(substream->runtime, res);
 850 }
 851
 852 /*
 853  * get the current pointer on via823x
 854  */
 855 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 856 {
 857         struct via82xx *chip = snd_pcm_substream_chip(substream);
 858         struct viadev *viadev = substream->runtime->private_data;
 859         unsigned int idx, count, res;
 860         int status;
 861
 862         if (snd_BUG_ON(!viadev->tbl_entries))
 863                 return 0;
 864
 865         spin_lock(&chip->reg_lock);
 866         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 867         status = viadev->in_interrupt;
 868         if (!status)
 869                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 870
 871         /* An apparent bug in the 8251 is worked around by sending a
 872          * REG_CTRL_START. */
 873         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 874                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 875
 876         if (!(status & VIA_REG_STAT_ACTIVE)) {
 877                 res = 0;
 878                 goto unlock;
 879         }
 880         if (count & 0xffffff) {
 881                 idx = count >> 24;
 882                 if (idx >= viadev->tbl_entries) {
 883 #ifdef POINTER_DEBUG
 884                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 885                                viadev->tbl_entries);
 886 #endif
 887                         res = viadev->lastpos;
 888                 } else {
 889                         count &= 0xffffff;
 890                         res = calc_linear_pos(viadev, idx, count);
 891                 }
 892         } else {
 893                 res = viadev->hwptr_done;
 894                 if (!viadev->in_interrupt) {
 895                         if (status & VIA_REG_STAT_EOL) {
 896                                 res = 0;
 897                         } else
 898                                 if (status & VIA_REG_STAT_FLAG) {
 899                                         res += viadev->fragsize;
 900                                 }
 901                 }
 902         }
 903 unlock:
 904         viadev->lastpos = res;
 905         spin_unlock(&chip->reg_lock);
 906
 907         return bytes_to_frames(substream->runtime, res);
 908 }
 909
 910
 911 /*
 912  * hw_params callback:
 913  * allocate the buffer and build up the buffer description table
 914  */
 915 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 916                                  struct snd_pcm_hw_params *hw_params)
 917 {
 918         struct via82xx *chip = snd_pcm_substream_chip(substream);
 919         struct viadev *viadev = substream->runtime->private_data;
 920         int err;
 921
 922         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 923         if (err < 0)
 924                 return err;
 925         err = build_via_table(viadev, substream, chip->pci,
 926                               params_periods(hw_params),
 927                               params_period_bytes(hw_params));
 928         if (err < 0)
 929                 return err;
 930
 931         return 0;
 932 }
 933
 934 /*
 935  * hw_free callback:
 936  * clean up the buffer description table and release the buffer
 937  */
 938 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 939 {
 940         struct via82xx *chip = snd_pcm_substream_chip(substream);
 941         struct viadev *viadev = substream->runtime->private_data;
 942
 943         clean_via_table(viadev, substream, chip->pci);
 944         snd_pcm_lib_free_pages(substream);
 945         return 0;
 946 }
 947
 948
 949 /*
 950  * set up the table pointer
 951  */
 952 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 953 {
 954         snd_via82xx_codec_ready(chip, 0);
 955         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 956         udelay(20);
 957         snd_via82xx_codec_ready(chip, 0);
 958 }
 959
 960 /*
 961  * prepare callback for playback and capture on via686
 962  */
 963 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 964                                 struct snd_pcm_runtime *runtime)
 965 {
 966         snd_via82xx_channel_reset(chip, viadev);
 967         /* this must be set after channel_reset */
 968         snd_via82xx_set_table_ptr(chip, viadev);
 969         outb(VIA_REG_TYPE_AUTOSTART |
 970              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 971              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 972              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 973              VIA_REG_TYPE_INT_EOL |
 974              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 975 }
 976
 977 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 978 {
 979         struct via82xx *chip = snd_pcm_substream_chip(substream);
 980         struct viadev *viadev = substream->runtime->private_data;
 981         struct snd_pcm_runtime *runtime = substream->runtime;
 982
 983         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 984         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 985         via686_setup_format(chip, viadev, runtime);
 986         return 0;
 987 }
 988
 989 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 990 {
 991         struct via82xx *chip = snd_pcm_substream_chip(substream);
 992         struct viadev *viadev = substream->runtime->private_data;
 993         struct snd_pcm_runtime *runtime = substream->runtime;
 994
 995         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 996         via686_setup_format(chip, viadev, runtime);
 997         return 0;
 998 }
 999
1000 /*
1001  * lock the current rate
1002  */
1003 static int via_lock_rate(struct via_rate_lock *rec, int rate)
1004 {
1005         int changed = 0;
1006
1007         spin_lock_irq(&rec->lock);
1008         if (rec->rate != rate) {
1009                 if (rec->rate && rec->used > 1) /* already set */
1010                         changed = -EINVAL;
1011                 else {
1012                         rec->rate = rate;
1013                         changed = 1;
1014                 }
1015         }
1016         spin_unlock_irq(&rec->lock);
1017         return changed;
1018 }
1019
1020 /*
1021  * prepare callback for DSX playback on via823x
1022  */
1023 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1024 {
1025         struct via82xx *chip = snd_pcm_substream_chip(substream);
1026         struct viadev *viadev = substream->runtime->private_data;
1027         struct snd_pcm_runtime *runtime = substream->runtime;
1028         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1029         int rate_changed;
1030         u32 rbits;
1031
1032         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1033                 return rate_changed;
1034         if (rate_changed)
1035                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1036                                   chip->no_vra ? 48000 : runtime->rate);
1037         if (chip->spdif_on && viadev->reg_offset == 0x30)
1038                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1039
1040         if (runtime->rate == 48000)
1041                 rbits = 0xfffff;
1042         else
1043                 rbits = (0x100000 / 48000) * runtime->rate +
1044                         ((0x100000 % 48000) * runtime->rate) / 48000;
1045         snd_BUG_ON(rbits & ~0xfffff);
1046         snd_via82xx_channel_reset(chip, viadev);
1047         snd_via82xx_set_table_ptr(chip, viadev);
1048         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1049              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1050         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1051              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1052         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1053              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1054              rbits | /* rate */
1055              0xff000000,    /* STOP index is never reached */
1056              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1057         udelay(20);
1058         snd_via82xx_codec_ready(chip, 0);
1059         return 0;
1060 }
1061
1062 /*
1063  * prepare callback for multi-channel playback on via823x
1064  */
1065 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1066 {
1067         struct via82xx *chip = snd_pcm_substream_chip(substream);
1068         struct viadev *viadev = substream->runtime->private_data;
1069         struct snd_pcm_runtime *runtime = substream->runtime;
1070         unsigned int slots;
1071         int fmt;
1072
1073         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1074                 return -EINVAL;
1075         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1076         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1077         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1078         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1079         snd_via82xx_channel_reset(chip, viadev);
1080         snd_via82xx_set_table_ptr(chip, viadev);
1081
1082         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1083                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1084         fmt |= runtime->channels << 4;
1085         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1086 #if 0
1087         if (chip->revision == VIA_REV_8233A)
1088                 slots = 0;
1089         else
1090 #endif
1091         {
1092                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1093                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1094                 switch (runtime->channels) {
1095                 case 1: slots = (1<<0) | (1<<4); break;
1096                 case 2: slots = (1<<0) | (2<<4); break;
1097                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1098                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1099                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1100                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1101                 default: slots = 0; break;
1102                 }
1103         }
1104         /* STOP index is never reached */
1105         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1106         udelay(20);
1107         snd_via82xx_codec_ready(chip, 0);
1108         return 0;
1109 }
1110
1111 /*
1112  * prepare callback for capture on via823x
1113  */
1114 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1115 {
1116         struct via82xx *chip = snd_pcm_substream_chip(substream);
1117         struct viadev *viadev = substream->runtime->private_data;
1118         struct snd_pcm_runtime *runtime = substream->runtime;
1119
1120         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1121                 return -EINVAL;
1122         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1123         snd_via82xx_channel_reset(chip, viadev);
1124         snd_via82xx_set_table_ptr(chip, viadev);
1125         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1126         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1127              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1128              0xff000000,    /* STOP index is never reached */
1129              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1130         udelay(20);
1131         snd_via82xx_codec_ready(chip, 0);
1132         return 0;
1133 }
1134
1135
1136 /*
1137  * pcm hardware definition, identical for both playback and capture
1138  */
1139 static struct snd_pcm_hardware snd_via82xx_hw =
1140 {
1141         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1142                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1143                                  SNDRV_PCM_INFO_MMAP_VALID |
1144                                  /* SNDRV_PCM_INFO_RESUME | */
1145                                  SNDRV_PCM_INFO_PAUSE),
1146         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1147         .rates =                SNDRV_PCM_RATE_48000,
1148         .rate_min =             48000,
1149         .rate_max =             48000,
1150         .channels_min =         1,
1151         .channels_max =         2,
1152         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1153         .period_bytes_min =     32,
1154         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1155         .periods_min =          2,
1156         .periods_max =          VIA_TABLE_SIZE / 2,
1157         .fifo_size =            0,
1158 };
1159
1160
1161 /*
1162  * open callback skeleton
1163  */
1164 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1165                                 struct snd_pcm_substream *substream)
1166 {
1167         struct snd_pcm_runtime *runtime = substream->runtime;
1168         int err;
1169         struct via_rate_lock *ratep;
1170
1171         runtime->hw = snd_via82xx_hw;
1172
1173         /* set the hw rate condition */
1174         ratep = &chip->rates[viadev->direction];
1175         spin_lock_irq(&ratep->lock);
1176         ratep->used++;
1177         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1178                 /* DXS#3 and spdif is on */
1179                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1180                 snd_pcm_limit_hw_rates(runtime);
1181         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1182                 /* fixed DXS playback rate */
1183                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1184                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1185         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1186                 /* use full SRC capabilities of DXS */
1187                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1188                                      SNDRV_PCM_RATE_8000_48000);
1189                 runtime->hw.rate_min = 8000;
1190                 runtime->hw.rate_max = 48000;
1191         } else if (! ratep->rate) {
1192                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1193                 runtime->hw.rates = chip->ac97->rates[idx];
1194                 snd_pcm_limit_hw_rates(runtime);
1195         } else {
1196                 /* a fixed rate */
1197                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1198                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1199         }
1200         spin_unlock_irq(&ratep->lock);
1201
1202         /* we may remove following constaint when we modify table entries
1203            in interrupt */
1204         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1205                 return err;
1206
1207         runtime->private_data = viadev;
1208         viadev->substream = substream;
1209
1210         return 0;
1211 }
1212
1213
1214 /*
1215  * open callback for playback on via686 and via823x DSX
1216  */
1217 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1218 {
1219         struct via82xx *chip = snd_pcm_substream_chip(substream);
1220         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1221         int err;
1222
1223         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1224                 return err;
1225         return 0;
1226 }
1227
1228 /*
1229  * open callback for playback on via823x multi-channel
1230  */
1231 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1232 {
1233         struct via82xx *chip = snd_pcm_substream_chip(substream);
1234         struct viadev *viadev = &chip->devs[chip->multi_devno];
1235         int err;
1236         /* channels constraint for VIA8233A
1237          * 3 and 5 channels are not supported
1238          */
1239         static unsigned int channels[] = {
1240                 1, 2, 4, 6
1241         };
1242         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1243                 .count = ARRAY_SIZE(channels),
1244                 .list = channels,
1245                 .mask = 0,
1246         };
1247
1248         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1249                 return err;
1250         substream->runtime->hw.channels_max = 6;
1251         if (chip->revision == VIA_REV_8233A)
1252                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1253                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1254                                            &hw_constraints_channels);
1255         return 0;
1256 }
1257
1258 /*
1259  * open callback for capture on via686 and via823x
1260  */
1261 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1262 {
1263         struct via82xx *chip = snd_pcm_substream_chip(substream);
1264         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1265
1266         return snd_via82xx_pcm_open(chip, viadev, substream);
1267 }
1268
1269 /*
1270  * close callback
1271  */
1272 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1273 {
1274         struct via82xx *chip = snd_pcm_substream_chip(substream);
1275         struct viadev *viadev = substream->runtime->private_data;
1276         struct via_rate_lock *ratep;
1277
1278         /* release the rate lock */
1279         ratep = &chip->rates[viadev->direction];
1280         spin_lock_irq(&ratep->lock);
1281         ratep->used--;
1282         if (! ratep->used)
1283                 ratep->rate = 0;
1284         spin_unlock_irq(&ratep->lock);
1285         if (! ratep->rate) {
1286                 if (! viadev->direction) {
1287                         snd_ac97_update_power(chip->ac97,
1288                                               AC97_PCM_FRONT_DAC_RATE, 0);
1289                         snd_ac97_update_power(chip->ac97,
1290                                               AC97_PCM_SURR_DAC_RATE, 0);
1291                         snd_ac97_update_power(chip->ac97,
1292                                               AC97_PCM_LFE_DAC_RATE, 0);
1293                 } else
1294                         snd_ac97_update_power(chip->ac97,
1295                                               AC97_PCM_LR_ADC_RATE, 0);
1296         }
1297         viadev->substream = NULL;
1298         return 0;
1299 }
1300
1301
1302 /* via686 playback callbacks */
1303 static struct snd_pcm_ops snd_via686_playback_ops = {
1304         .open =         snd_via82xx_playback_open,
1305         .close =        snd_via82xx_pcm_close,
1306         .ioctl =        snd_pcm_lib_ioctl,
1307         .hw_params =    snd_via82xx_hw_params,
1308         .hw_free =      snd_via82xx_hw_free,
1309         .prepare =      snd_via686_playback_prepare,
1310         .trigger =      snd_via82xx_pcm_trigger,
1311         .pointer =      snd_via686_pcm_pointer,
1312         .page =         snd_pcm_sgbuf_ops_page,
1313 };
1314
1315 /* via686 capture callbacks */
1316 static struct snd_pcm_ops snd_via686_capture_ops = {
1317         .open =         snd_via82xx_capture_open,
1318         .close =        snd_via82xx_pcm_close,
1319         .ioctl =        snd_pcm_lib_ioctl,
1320         .hw_params =    snd_via82xx_hw_params,
1321         .hw_free =      snd_via82xx_hw_free,
1322         .prepare =      snd_via686_capture_prepare,
1323         .trigger =      snd_via82xx_pcm_trigger,
1324         .pointer =      snd_via686_pcm_pointer,
1325         .page =         snd_pcm_sgbuf_ops_page,
1326 };
1327
1328 /* via823x DSX playback callbacks */
1329 static struct snd_pcm_ops snd_via8233_playback_ops = {
1330         .open =         snd_via82xx_playback_open,
1331         .close =        snd_via82xx_pcm_close,
1332         .ioctl =        snd_pcm_lib_ioctl,
1333         .hw_params =    snd_via82xx_hw_params,
1334         .hw_free =      snd_via82xx_hw_free,
1335         .prepare =      snd_via8233_playback_prepare,
1336         .trigger =      snd_via82xx_pcm_trigger,
1337         .pointer =      snd_via8233_pcm_pointer,
1338         .page =         snd_pcm_sgbuf_ops_page,
1339 };
1340
1341 /* via823x multi-channel playback callbacks */
1342 static struct snd_pcm_ops snd_via8233_multi_ops = {
1343         .open =         snd_via8233_multi_open,
1344         .close =        snd_via82xx_pcm_close,
1345         .ioctl =        snd_pcm_lib_ioctl,
1346         .hw_params =    snd_via82xx_hw_params,
1347         .hw_free =      snd_via82xx_hw_free,
1348         .prepare =      snd_via8233_multi_prepare,
1349         .trigger =      snd_via82xx_pcm_trigger,
1350         .pointer =      snd_via8233_pcm_pointer,
1351         .page =         snd_pcm_sgbuf_ops_page,
1352 };
1353
1354 /* via823x capture callbacks */
1355 static struct snd_pcm_ops snd_via8233_capture_ops = {
1356         .open =         snd_via82xx_capture_open,
1357         .close =        snd_via82xx_pcm_close,
1358         .ioctl =        snd_pcm_lib_ioctl,
1359         .hw_params =    snd_via82xx_hw_params,
1360         .hw_free =      snd_via82xx_hw_free,
1361         .prepare =      snd_via8233_capture_prepare,
1362         .trigger =      snd_via82xx_pcm_trigger,
1363         .pointer =      snd_via8233_pcm_pointer,
1364         .page =         snd_pcm_sgbuf_ops_page,
1365 };
1366
1367
1368 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1369                         int shadow_pos, int direction)
1370 {
1371         chip->devs[idx].reg_offset = reg_offset;
1372         chip->devs[idx].shadow_shift = shadow_pos * 4;
1373         chip->devs[idx].direction = direction;
1374         chip->devs[idx].port = chip->port + reg_offset;
1375 }
1376
1377 /*
1378  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1379  */
1380 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1381 {
1382         struct snd_pcm *pcm;
1383         int i, err;
1384
1385         chip->playback_devno = 0;       /* x 4 */
1386         chip->multi_devno = 4;          /* x 1 */
1387         chip->capture_devno = 5;        /* x 2 */
1388         chip->num_devs = 7;
1389         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1390
1391         /* PCM #0:  4 DSX playbacks and 1 capture */
1392         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1393         if (err < 0)
1394                 return err;
1395         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1396         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1397         pcm->private_data = chip;
1398         strcpy(pcm->name, chip->card->shortname);
1399         chip->pcms[0] = pcm;
1400         /* set up playbacks */
1401         for (i = 0; i < 4; i++)
1402                 init_viadev(chip, i, 0x10 * i, i, 0);
1403         /* capture */
1404         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1405
1406         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1407                                               snd_dma_pci_data(chip->pci),
1408                                               64*1024, VIA_MAX_BUFSIZE);
1409
1410         /* PCM #1:  multi-channel playback and 2nd capture */
1411         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1412         if (err < 0)
1413                 return err;
1414         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1415         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1416         pcm->private_data = chip;
1417         strcpy(pcm->name, chip->card->shortname);
1418         chip->pcms[1] = pcm;
1419         /* set up playback */
1420         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1421         /* set up capture */
1422         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1423
1424         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1425                                               snd_dma_pci_data(chip->pci),
1426                                               64*1024, VIA_MAX_BUFSIZE);
1427         return 0;
1428 }
1429
1430 /*
1431  * create pcm instances for VIA8233A
1432  */
1433 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1434 {
1435         struct snd_pcm *pcm;
1436         int err;
1437
1438         chip->multi_devno = 0;
1439         chip->playback_devno = 1;
1440         chip->capture_devno = 2;
1441         chip->num_devs = 3;
1442         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1443
1444         /* PCM #0:  multi-channel playback and capture */
1445         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1446         if (err < 0)
1447                 return err;
1448         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1449         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1450         pcm->private_data = chip;
1451         strcpy(pcm->name, chip->card->shortname);
1452         chip->pcms[0] = pcm;
1453         /* set up playback */
1454         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1455         /* capture */
1456         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1457
1458         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1459                                               snd_dma_pci_data(chip->pci),
1460                                               64*1024, VIA_MAX_BUFSIZE);
1461
1462         /* SPDIF supported? */
1463         if (! ac97_can_spdif(chip->ac97))
1464                 return 0;
1465
1466         /* PCM #1:  DXS3 playback (for spdif) */
1467         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1468         if (err < 0)
1469                 return err;
1470         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1471         pcm->private_data = chip;
1472         strcpy(pcm->name, chip->card->shortname);
1473         chip->pcms[1] = pcm;
1474         /* set up playback */
1475         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1476
1477         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1478                                               snd_dma_pci_data(chip->pci),
1479                                               64*1024, VIA_MAX_BUFSIZE);
1480         return 0;
1481 }
1482
1483 /*
1484  * create a pcm instance for via686a/b
1485  */
1486 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1487 {
1488         struct snd_pcm *pcm;
1489         int err;
1490
1491         chip->playback_devno = 0;
1492         chip->capture_devno = 1;
1493         chip->num_devs = 2;
1494         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1495
1496         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1497         if (err < 0)
1498                 return err;
1499         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1500         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1501         pcm->private_data = chip;
1502         strcpy(pcm->name, chip->card->shortname);
1503         chip->pcms[0] = pcm;
1504         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1505         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1506
1507         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1508                                               snd_dma_pci_data(chip->pci),
1509                                               64*1024, VIA_MAX_BUFSIZE);
1510         return 0;
1511 }
1512
1513
1514 /*
1515  *  Mixer part
1516  */
1517
1518 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1519                                            struct snd_ctl_elem_info *uinfo)
1520 {
1521         /* formerly they were "Line" and "Mic", but it looks like that they
1522          * have nothing to do with the actual physical connections...
1523          */
1524         static char *texts[2] = {
1525                 "Input1", "Input2"
1526         };
1527         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1528         uinfo->count = 1;
1529         uinfo->value.enumerated.items = 2;
1530         if (uinfo->value.enumerated.item >= 2)
1531                 uinfo->value.enumerated.item = 1;
1532         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1533         return 0;
1534 }
1535
1536 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1537                                           struct snd_ctl_elem_value *ucontrol)
1538 {
1539         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1540         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1541         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1542         return 0;
1543 }
1544
1545 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1546                                           struct snd_ctl_elem_value *ucontrol)
1547 {
1548         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1549         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1550         u8 val, oval;
1551
1552         spin_lock_irq(&chip->reg_lock);
1553         oval = inb(port);
1554         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1555         if (ucontrol->value.enumerated.item[0])
1556                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1557         if (val != oval)
1558                 outb(val, port);
1559         spin_unlock_irq(&chip->reg_lock);
1560         return val != oval;
1561 }
1562
1563 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1564         .name = "Input Source Select",
1565         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1566         .info = snd_via8233_capture_source_info,
1567         .get = snd_via8233_capture_source_get,
1568         .put = snd_via8233_capture_source_put,
1569 };
1570
1571 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1572
1573 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1574                                       struct snd_ctl_elem_value *ucontrol)
1575 {
1576         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1577         u8 val;
1578
1579         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1580         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1581         return 0;
1582 }
1583
1584 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1585                                       struct snd_ctl_elem_value *ucontrol)
1586 {
1587         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1588         u8 val, oval;
1589
1590         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1591         val = oval & ~VIA8233_SPDIF_DX3;
1592         if (ucontrol->value.integer.value[0])
1593                 val |= VIA8233_SPDIF_DX3;
1594         /* save the spdif flag for rate filtering */
1595         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1596         if (val != oval) {
1597                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1598                 return 1;
1599         }
1600         return 0;
1601 }
1602
1603 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1604         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1605         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1606         .info = snd_via8233_dxs3_spdif_info,
1607         .get = snd_via8233_dxs3_spdif_get,
1608         .put = snd_via8233_dxs3_spdif_put,
1609 };
1610
1611 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1612                                        struct snd_ctl_elem_info *uinfo)
1613 {
1614         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1615         uinfo->count = 2;
1616         uinfo->value.integer.min = 0;
1617         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1618         return 0;
1619 }
1620
1621 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1622                                       struct snd_ctl_elem_value *ucontrol)
1623 {
1624         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1625         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1626
1627         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1628         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1629         return 0;
1630 }
1631
1632 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1633                                          struct snd_ctl_elem_value *ucontrol)
1634 {
1635         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1636         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1637         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1638         return 0;
1639 }
1640
1641 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1642                                       struct snd_ctl_elem_value *ucontrol)
1643 {
1644         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1645         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1646         unsigned long port = chip->port + 0x10 * idx;
1647         unsigned char val;
1648         int i, change = 0;
1649
1650         for (i = 0; i < 2; i++) {
1651                 val = ucontrol->value.integer.value[i];
1652                 if (val > VIA_DXS_MAX_VOLUME)
1653                         val = VIA_DXS_MAX_VOLUME;
1654                 val = VIA_DXS_MAX_VOLUME - val;
1655                 change |= val != chip->playback_volume[idx][i];
1656                 if (change) {
1657                         chip->playback_volume[idx][i] = val;
1658                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1659                 }
1660         }
1661         return change;
1662 }
1663
1664 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1665                                          struct snd_ctl_elem_value *ucontrol)
1666 {
1667         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1668         unsigned int idx;
1669         unsigned char val;
1670         int i, change = 0;
1671
1672         for (i = 0; i < 2; i++) {
1673                 val = ucontrol->value.integer.value[i];
1674                 if (val > VIA_DXS_MAX_VOLUME)
1675                         val = VIA_DXS_MAX_VOLUME;
1676                 val = VIA_DXS_MAX_VOLUME - val;
1677                 if (val != chip->playback_volume_c[i]) {
1678                         change = 1;
1679                         chip->playback_volume_c[i] = val;
1680                         for (idx = 0; idx < 4; idx++) {
1681                                 unsigned long port = chip->port + 0x10 * idx;
1682                                 chip->playback_volume[idx][i] = val;
1683                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1684                         }
1685                 }
1686         }
1687         return change;
1688 }
1689
1690 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -9450, 150, 1);
1691
1692 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1693         .name = "PCM Playback Volume",
1694         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1695         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1696                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1697         .info = snd_via8233_dxs_volume_info,
1698         .get = snd_via8233_pcmdxs_volume_get,
1699         .put = snd_via8233_pcmdxs_volume_put,
1700         .tlv = { .p = db_scale_dxs }
1701 };
1702
1703 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1704         .name = "VIA DXS Playback Volume",
1705         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1706         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1707                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1708         .count = 4,
1709         .info = snd_via8233_dxs_volume_info,
1710         .get = snd_via8233_dxs_volume_get,
1711         .put = snd_via8233_dxs_volume_put,
1712         .tlv = { .p = db_scale_dxs }
1713 };
1714
1715 /*
1716  */
1717
1718 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1719 {
1720         struct via82xx *chip = bus->private_data;
1721         chip->ac97_bus = NULL;
1722 }
1723
1724 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1725 {
1726         struct via82xx *chip = ac97->private_data;
1727         chip->ac97 = NULL;
1728 }
1729
1730 static struct ac97_quirk ac97_quirks[] = {
1731         {
1732                 .subvendor = 0x1106,
1733                 .subdevice = 0x4161,
1734                 .codec_id = 0x56494161, /* VT1612A */
1735                 .name = "Soltek SL-75DRV5",
1736                 .type = AC97_TUNE_NONE
1737         },
1738         {       /* FIXME: which codec? */
1739                 .subvendor = 0x1106,
1740                 .subdevice = 0x4161,
1741                 .name = "ASRock K7VT2",
1742                 .type = AC97_TUNE_HP_ONLY
1743         },
1744         {
1745                 .subvendor = 0x1019,
1746                 .subdevice = 0x0a81,
1747                 .name = "ECS K7VTA3",
1748                 .type = AC97_TUNE_HP_ONLY
1749         },
1750         {
1751                 .subvendor = 0x1019,
1752                 .subdevice = 0x0a85,
1753                 .name = "ECS L7VMM2",
1754                 .type = AC97_TUNE_HP_ONLY
1755         },
1756         {
1757                 .subvendor = 0x1019,
1758                 .subdevice = 0x1841,
1759                 .name = "ECS K7VTA3",
1760                 .type = AC97_TUNE_HP_ONLY
1761         },
1762         {
1763                 .subvendor = 0x1849,
1764                 .subdevice = 0x3059,
1765                 .name = "ASRock K7VM2",
1766                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1767         },
1768         {
1769                 .subvendor = 0x14cd,
1770                 .subdevice = 0x7002,
1771                 .name = "Unknown",
1772                 .type = AC97_TUNE_ALC_JACK
1773         },
1774         {
1775                 .subvendor = 0x1071,
1776                 .subdevice = 0x8590,
1777                 .name = "Mitac Mobo",
1778                 .type = AC97_TUNE_ALC_JACK
1779         },
1780         {
1781                 .subvendor = 0x161f,
1782                 .subdevice = 0x202b,
1783                 .name = "Arima Notebook",
1784                 .type = AC97_TUNE_HP_ONLY,
1785         },
1786         {
1787                 .subvendor = 0x161f,
1788                 .subdevice = 0x2032,
1789                 .name = "Targa Traveller 811",
1790                 .type = AC97_TUNE_HP_ONLY,
1791         },
1792         {
1793                 .subvendor = 0x161f,
1794                 .subdevice = 0x2032,
1795                 .name = "m680x",
1796                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1797         },
1798         {
1799                 .subvendor = 0x1297,
1800                 .subdevice = 0xa232,
1801                 .name = "Shuttle AK32VN",
1802                 .type = AC97_TUNE_HP_ONLY
1803         },
1804         { } /* terminator */
1805 };
1806
1807 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1808 {
1809         struct snd_ac97_template ac97;
1810         int err;
1811         static struct snd_ac97_bus_ops ops = {
1812                 .write = snd_via82xx_codec_write,
1813                 .read = snd_via82xx_codec_read,
1814                 .wait = snd_via82xx_codec_wait,
1815         };
1816
1817         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1818                 return err;
1819         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1820         chip->ac97_bus->clock = chip->ac97_clock;
1821
1822         memset(&ac97, 0, sizeof(ac97));
1823         ac97.private_data = chip;
1824         ac97.private_free = snd_via82xx_mixer_free_ac97;
1825         ac97.pci = chip->pci;
1826         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1827         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1828                 return err;
1829
1830         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1831
1832         if (chip->chip_type != TYPE_VIA686) {
1833                 /* use slot 10/11 */
1834                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1835         }
1836
1837         return 0;
1838 }
1839
1840 #ifdef SUPPORT_JOYSTICK
1841 #define JOYSTICK_ADDR   0x200
1842 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1843 {
1844         struct gameport *gp;
1845         struct resource *r;
1846
1847         if (!joystick)
1848                 return -ENODEV;
1849
1850         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1851         if (!r) {
1852                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1853                        JOYSTICK_ADDR);
1854                 return -EBUSY;
1855         }
1856
1857         chip->gameport = gp = gameport_allocate_port();
1858         if (!gp) {
1859                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1860                 release_and_free_resource(r);
1861                 return -ENOMEM;
1862         }
1863
1864         gameport_set_name(gp, "VIA686 Gameport");
1865         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1866         gameport_set_dev_parent(gp, &chip->pci->dev);
1867         gp->io = JOYSTICK_ADDR;
1868         gameport_set_port_data(gp, r);
1869
1870         /* Enable legacy joystick port */
1871         *legacy |= VIA_FUNC_ENABLE_GAME;
1872         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1873
1874         gameport_register_port(chip->gameport);
1875
1876         return 0;
1877 }
1878
1879 static void snd_via686_free_gameport(struct via82xx *chip)
1880 {
1881         if (chip->gameport) {
1882                 struct resource *r = gameport_get_port_data(chip->gameport);
1883
1884                 gameport_unregister_port(chip->gameport);
1885                 chip->gameport = NULL;
1886                 release_and_free_resource(r);
1887         }
1888 }
1889 #else
1890 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1891 {
1892         return -ENOSYS;
1893 }
1894 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1895 #endif
1896
1897
1898 /*
1899  *
1900  */
1901
1902 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1903 {
1904         int i, err, caps;
1905         unsigned char val;
1906
1907         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1908         for (i = 0; i < caps; i++) {
1909                 snd_via8233_capture_source.index = i;
1910                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1911                 if (err < 0)
1912                         return err;
1913         }
1914         if (ac97_can_spdif(chip->ac97)) {
1915                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1916                 if (err < 0)
1917                         return err;
1918         }
1919         if (chip->chip_type != TYPE_VIA8233A) {
1920                 /* when no h/w PCM volume control is found, use DXS volume control
1921                  * as the PCM vol control
1922                  */
1923                 struct snd_ctl_elem_id sid;
1924                 memset(&sid, 0, sizeof(sid));
1925                 strcpy(sid.name, "PCM Playback Volume");
1926                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1927                 if (! snd_ctl_find_id(chip->card, &sid)) {
1928                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1929                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1930                         if (err < 0)
1931                                 return err;
1932                 }
1933                 else /* Using DXS when PCM emulation is enabled is really weird */
1934                 {
1935                         /* Standalone DXS controls */
1936                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1937                         if (err < 0)
1938                                 return err;
1939                 }
1940         }
1941         /* select spdif data slot 10/11 */
1942         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1943         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1944         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1945         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1946
1947         return 0;
1948 }
1949
1950 static int __devinit snd_via686_init_misc(struct via82xx *chip)
1951 {
1952         unsigned char legacy, legacy_cfg;
1953         int rev_h = 0;
1954
1955         legacy = chip->old_legacy;
1956         legacy_cfg = chip->old_legacy_cfg;
1957         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1958         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1959         if (chip->revision >= VIA_REV_686_H) {
1960                 rev_h = 1;
1961                 if (mpu_port >= 0x200) {        /* force MIDI */
1962                         mpu_port &= 0xfffc;
1963                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1964 #ifdef CONFIG_PM
1965                         chip->mpu_port_saved = mpu_port;
1966 #endif
1967                 } else {
1968                         mpu_port = pci_resource_start(chip->pci, 2);
1969                 }
1970         } else {
1971                 switch (mpu_port) {     /* force MIDI */
1972                 case 0x300:
1973                 case 0x310:
1974                 case 0x320:
1975                 case 0x330:
1976                         legacy_cfg &= ~(3 << 2);
1977                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1978                         break;
1979                 default:                        /* no, use BIOS settings */
1980                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1981                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1982                         break;
1983                 }
1984         }
1985         if (mpu_port >= 0x200 &&
1986             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1987             != NULL) {
1988                 if (rev_h)
1989                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1990                 legacy |= VIA_FUNC_ENABLE_MIDI;
1991         } else {
1992                 if (rev_h)
1993                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1994                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1995                 mpu_port = 0;
1996         }
1997
1998         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1999         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2000         if (chip->mpu_res) {
2001                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2002                                         mpu_port, MPU401_INFO_INTEGRATED,
2003                                         chip->irq, 0, &chip->rmidi) < 0) {
2004                         printk(KERN_WARNING "unable to initialize MPU-401"
2005                                " at 0x%lx, skipping\n", mpu_port);
2006                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2007                 } else {
2008                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2009                 }
2010                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2011         }
2012
2013         snd_via686_create_gameport(chip, &legacy);
2014
2015 #ifdef CONFIG_PM
2016         chip->legacy_saved = legacy;
2017         chip->legacy_cfg_saved = legacy_cfg;
2018 #endif
2019
2020         return 0;
2021 }
2022
2023
2024 /*
2025  * proc interface
2026  */
2027 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2028                                   struct snd_info_buffer *buffer)
2029 {
2030         struct via82xx *chip = entry->private_data;
2031         int i;
2032
2033         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2034         for (i = 0; i < 0xa0; i += 4) {
2035                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2036         }
2037 }
2038
2039 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2040 {
2041         struct snd_info_entry *entry;
2042
2043         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2044                 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2045 }
2046
2047 /*
2048  *
2049  */
2050
2051 static int snd_via82xx_chip_init(struct via82xx *chip)
2052 {
2053         unsigned int val;
2054         unsigned long end_time;
2055         unsigned char pval;
2056
2057 #if 0 /* broken on K7M? */
2058         if (chip->chip_type == TYPE_VIA686)
2059                 /* disable all legacy ports */
2060                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2061 #endif
2062         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2063         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2064                 /* deassert ACLink reset, force SYNC */
2065                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2066                                       VIA_ACLINK_CTRL_ENABLE |
2067                                       VIA_ACLINK_CTRL_RESET |
2068                                       VIA_ACLINK_CTRL_SYNC);
2069                 udelay(100);
2070 #if 1 /* FIXME: should we do full reset here for all chip models? */
2071                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2072                 udelay(100);
2073 #else
2074                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2075                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2076                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2077                 udelay(2);
2078 #endif
2079                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2080                 /* note - FM data out has trouble with non VRA codecs !! */
2081                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2082                 udelay(100);
2083         }
2084
2085         /* Make sure VRA is enabled, in case we didn't do a
2086          * complete codec reset, above */
2087         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2088         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2089                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2090                 /* note - FM data out has trouble with non VRA codecs !! */
2091                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2092                 udelay(100);
2093         }
2094
2095         /* wait until codec ready */
2096         end_time = jiffies + msecs_to_jiffies(750);
2097         do {
2098                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2099                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2100                         break;
2101                 schedule_timeout_uninterruptible(1);
2102         } while (time_before(jiffies, end_time));
2103
2104         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2105                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2106
2107 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2108         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2109                                  VIA_REG_AC97_SECONDARY_VALID |
2110                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2111         end_time = jiffies + msecs_to_jiffies(750);
2112         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2113                                  VIA_REG_AC97_SECONDARY_VALID |
2114                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2115         do {
2116                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2117                         chip->ac97_secondary = 1;
2118                         goto __ac97_ok2;
2119                 }
2120                 schedule_timeout_uninterruptible(1);
2121         } while (time_before(jiffies, end_time));
2122         /* This is ok, the most of motherboards have only one codec */
2123
2124       __ac97_ok2:
2125 #endif
2126
2127         if (chip->chip_type == TYPE_VIA686) {
2128                 /* route FM trap to IRQ, disable FM trap */
2129                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2130                 /* disable all GPI interrupts */
2131                 outl(0, VIAREG(chip, GPI_INTR));
2132         }
2133
2134         if (chip->chip_type != TYPE_VIA686) {
2135                 /* Workaround for Award BIOS bug:
2136                  * DXS channels don't work properly with VRA if MC97 is disabled.
2137                  */
2138                 struct pci_dev *pci;
2139                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2140                 if (pci) {
2141                         unsigned char data;
2142                         pci_read_config_byte(pci, 0x44, &data);
2143                         pci_write_config_byte(pci, 0x44, data | 0x40);
2144                         pci_dev_put(pci);
2145                 }
2146         }
2147
2148         if (chip->chip_type != TYPE_VIA8233A) {
2149                 int i, idx;
2150                 for (idx = 0; idx < 4; idx++) {
2151                         unsigned long port = chip->port + 0x10 * idx;
2152                         for (i = 0; i < 2; i++) {
2153                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2154                                 outb(chip->playback_volume_c[i],
2155                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2156                         }
2157                 }
2158         }
2159
2160         return 0;
2161 }
2162
2163 #ifdef CONFIG_PM
2164 /*
2165  * power management
2166  */
2167 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2168 {
2169         struct snd_card *card = pci_get_drvdata(pci);
2170         struct via82xx *chip = card->private_data;
2171         int i;
2172
2173         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2174         for (i = 0; i < 2; i++)
2175                 snd_pcm_suspend_all(chip->pcms[i]);
2176         for (i = 0; i < chip->num_devs; i++)
2177                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2178         synchronize_irq(chip->irq);
2179         snd_ac97_suspend(chip->ac97);
2180
2181         /* save misc values */
2182         if (chip->chip_type != TYPE_VIA686) {
2183                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2184                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2185                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2186         }
2187
2188         pci_disable_device(pci);
2189         pci_save_state(pci);
2190         pci_set_power_state(pci, pci_choose_state(pci, state));
2191         return 0;
2192 }
2193
2194 static int snd_via82xx_resume(struct pci_dev *pci)
2195 {
2196         struct snd_card *card = pci_get_drvdata(pci);
2197         struct via82xx *chip = card->private_data;
2198         int i;
2199
2200         pci_set_power_state(pci, PCI_D0);
2201         pci_restore_state(pci);
2202         if (pci_enable_device(pci) < 0) {
2203                 printk(KERN_ERR "via82xx: pci_enable_device failed, "
2204                        "disabling device\n");
2205                 snd_card_disconnect(card);
2206                 return -EIO;
2207         }
2208         pci_set_master(pci);
2209
2210         snd_via82xx_chip_init(chip);
2211
2212         if (chip->chip_type == TYPE_VIA686) {
2213                 if (chip->mpu_port_saved)
2214                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2215                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2216                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2217         } else {
2218                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2219                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2220                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2221         }
2222
2223         snd_ac97_resume(chip->ac97);
2224
2225         for (i = 0; i < chip->num_devs; i++)
2226                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2227
2228         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2229         return 0;
2230 }
2231 #endif /* CONFIG_PM */
2232
2233 static int snd_via82xx_free(struct via82xx *chip)
2234 {
2235         unsigned int i;
2236
2237         if (chip->irq < 0)
2238                 goto __end_hw;
2239         /* disable interrupts */
2240         for (i = 0; i < chip->num_devs; i++)
2241                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2242
2243         if (chip->irq >= 0)
2244                 free_irq(chip->irq, chip);
2245  __end_hw:
2246         release_and_free_resource(chip->mpu_res);
2247         pci_release_regions(chip->pci);
2248
2249         if (chip->chip_type == TYPE_VIA686) {
2250                 snd_via686_free_gameport(chip);
2251                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2252                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2253         }
2254         pci_disable_device(chip->pci);
2255         kfree(chip);
2256         return 0;
2257 }
2258
2259 static int snd_via82xx_dev_free(struct snd_device *device)
2260 {
2261         struct via82xx *chip = device->device_data;
2262         return snd_via82xx_free(chip);
2263 }
2264
2265 static int __devinit snd_via82xx_create(struct snd_card *card,
2266                                         struct pci_dev *pci,
2267                                         int chip_type,
2268                                         int revision,
2269                                         unsigned int ac97_clock,
2270                                         struct via82xx ** r_via)
2271 {
2272         struct via82xx *chip;
2273         int err;
2274         static struct snd_device_ops ops = {
2275                 .dev_free =     snd_via82xx_dev_free,
2276         };
2277
2278         if ((err = pci_enable_device(pci)) < 0)
2279                 return err;
2280
2281         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2282                 pci_disable_device(pci);
2283                 return -ENOMEM;
2284         }
2285
2286         chip->chip_type = chip_type;
2287         chip->revision = revision;
2288
2289         spin_lock_init(&chip->reg_lock);
2290         spin_lock_init(&chip->rates[0].lock);
2291         spin_lock_init(&chip->rates[1].lock);
2292         chip->card = card;
2293         chip->pci = pci;
2294         chip->irq = -1;
2295
2296         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2297         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2298         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2299                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2300
2301         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2302                 kfree(chip);
2303                 pci_disable_device(pci);
2304                 return err;
2305         }
2306         chip->port = pci_resource_start(pci, 0);
2307         if (request_irq(pci->irq,
2308                         chip_type == TYPE_VIA8233 ?
2309                         snd_via8233_interrupt : snd_via686_interrupt,
2310                         IRQF_SHARED,
2311                         card->driver, chip)) {
2312                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2313                 snd_via82xx_free(chip);
2314                 return -EBUSY;
2315         }
2316         chip->irq = pci->irq;
2317         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2318                 chip->ac97_clock = ac97_clock;
2319         synchronize_irq(chip->irq);
2320
2321         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2322                 snd_via82xx_free(chip);
2323                 return err;
2324         }
2325
2326         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2327                 snd_via82xx_free(chip);
2328                 return err;
2329         }
2330
2331         /* The 8233 ac97 controller does not implement the master bit
2332          * in the pci command register. IMHO this is a violation of the PCI spec.
2333          * We call pci_set_master here because it does not hurt. */
2334         pci_set_master(pci);
2335
2336         snd_card_set_dev(card, &pci->dev);
2337
2338         *r_via = chip;
2339         return 0;
2340 }
2341
2342 struct via823x_info {
2343         int revision;
2344         char *name;
2345         int type;
2346 };
2347 static struct via823x_info via823x_cards[] __devinitdata = {
2348         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2349         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2350         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2351         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2352         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2353         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2354         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2355 };
2356
2357 /*
2358  * auto detection of DXS channel supports.
2359  */
2360
2361 static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2362         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2363         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2364         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2365         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2366         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2367         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2368         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2369         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2370         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2371         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2372         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2373         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2374         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2375         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2376         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2377         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2378         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2379         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2380         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2381         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2382         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2383         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2384         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2385         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2386         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2387         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2388         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2389         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2390         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2391         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2392         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2393         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2394         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2395         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2396         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2397         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2398         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2399         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2400         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2401         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2402         { } /* terminator */
2403 };
2404
2405 static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2406 {
2407         const struct snd_pci_quirk *w;
2408
2409         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2410         if (w) {
2411                 snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2412                             w->name);
2413                 return w->value;
2414         }
2415
2416         /* for newer revision, default to DXS_SRC */
2417         if (revision >= VIA_REV_8235)
2418                 return VIA_DXS_SRC;
2419
2420         /*
2421          * not detected, try 48k rate only to be sure.
2422          */
2423         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2424         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2425         printk(KERN_INFO "         and report if it works on your machine.\n");
2426         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2427         return VIA_DXS_48K;
2428 };
2429
2430 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2431                                        const struct pci_device_id *pci_id)
2432 {
2433         struct snd_card *card;
2434         struct via82xx *chip;
2435         int chip_type = 0, card_type;
2436         unsigned int i;
2437         int err;
2438
2439         err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2440         if (err < 0)
2441                 return err;
2442
2443         card_type = pci_id->driver_data;
2444         switch (card_type) {
2445         case TYPE_CARD_VIA686:
2446                 strcpy(card->driver, "VIA686A");
2447                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2448                 chip_type = TYPE_VIA686;
2449                 break;
2450         case TYPE_CARD_VIA8233:
2451                 chip_type = TYPE_VIA8233;
2452                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2453                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2454                         if (pci->revision == via823x_cards[i].revision) {
2455                                 chip_type = via823x_cards[i].type;
2456                                 strcpy(card->shortname, via823x_cards[i].name);
2457                                 break;
2458                         }
2459                 }
2460                 if (chip_type != TYPE_VIA8233A) {
2461                         if (dxs_support == VIA_DXS_AUTO)
2462                                 dxs_support = check_dxs_list(pci, pci->revision);
2463                         /* force to use VIA8233 or 8233A model according to
2464                          * dxs_support module option
2465                          */
2466                         if (dxs_support == VIA_DXS_DISABLE)
2467                                 chip_type = TYPE_VIA8233A;
2468                         else
2469                                 chip_type = TYPE_VIA8233;
2470                 }
2471                 if (chip_type == TYPE_VIA8233A)
2472                         strcpy(card->driver, "VIA8233A");
2473                 else if (pci->revision >= VIA_REV_8237)
2474                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2475                 else
2476                         strcpy(card->driver, "VIA8233");
2477                 break;
2478         default:
2479                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2480                 err = -EINVAL;
2481                 goto __error;
2482         }
2483
2484         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2485                                       ac97_clock, &chip)) < 0)
2486                 goto __error;
2487         card->private_data = chip;
2488         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2489                 goto __error;
2490
2491         if (chip_type == TYPE_VIA686) {
2492                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2493                     (err = snd_via686_init_misc(chip)) < 0)
2494                         goto __error;
2495         } else {
2496                 if (chip_type == TYPE_VIA8233A) {
2497                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2498                                 goto __error;
2499                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2500                 } else {
2501                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2502                                 goto __error;
2503                         if (dxs_support == VIA_DXS_48K)
2504                                 chip->dxs_fixed = 1;
2505                         else if (dxs_support == VIA_DXS_NO_VRA)
2506                                 chip->no_vra = 1;
2507                         else if (dxs_support == VIA_DXS_SRC) {
2508                                 chip->no_vra = 1;
2509                                 chip->dxs_src = 1;
2510                         }
2511                 }
2512                 if ((err = snd_via8233_init_misc(chip)) < 0)
2513                         goto __error;
2514         }
2515
2516         /* disable interrupts */
2517         for (i = 0; i < chip->num_devs; i++)
2518                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2519
2520         snprintf(card->longname, sizeof(card->longname),
2521                  "%s with %s at %#lx, irq %d", card->shortname,
2522                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2523
2524         snd_via82xx_proc_init(chip);
2525
2526         if ((err = snd_card_register(card)) < 0) {
2527                 snd_card_free(card);
2528                 return err;
2529         }
2530         pci_set_drvdata(pci, card);
2531         return 0;
2532
2533  __error:
2534         snd_card_free(card);
2535         return err;
2536 }
2537
2538 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2539 {
2540         snd_card_free(pci_get_drvdata(pci));
2541         pci_set_drvdata(pci, NULL);
2542 }
2543
2544 static struct pci_driver driver = {
2545         .name = "VIA 82xx Audio",
2546         .id_table = snd_via82xx_ids,
2547         .probe = snd_via82xx_probe,
2548         .remove = __devexit_p(snd_via82xx_remove),
2549 #ifdef CONFIG_PM
2550         .suspend = snd_via82xx_suspend,
2551         .resume = snd_via82xx_resume,
2552 #endif
2553 };
2554
2555 static int __init alsa_card_via82xx_init(void)
2556 {
2557         return pci_register_driver(&driver);
2558 }
2559
2560 static void __exit alsa_card_via82xx_exit(void)
2561 {
2562         pci_unregister_driver(&driver);
2563 }
2564
2565 module_init(alsa_card_via82xx_init)
2566 module_exit(alsa_card_via82xx_exit)