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

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  *
  45  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46  *      - Optimize position calculation for the 823x chips.
  47  */
  48
  49 #include <sound/driver.h>
  50 #include <asm/io.h>
  51 #include <linux/delay.h>
  52 #include <linux/interrupt.h>
  53 #include <linux/init.h>
  54 #include <linux/pci.h>
  55 #include <linux/slab.h>
  56 #include <linux/gameport.h>
  57 #include <linux/moduleparam.h>
  58 #include <sound/core.h>
  59 #include <sound/pcm.h>
  60 #include <sound/pcm_params.h>
  61 #include <sound/info.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@suse.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
 127 /*
 128  *  Direct registers
 129  */
 130
 131 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 132 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 133
 134 /* common offsets */
 135 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 136 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 137 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 138 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 139 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 140 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 141 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 142 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 143 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 144 #define   VIA_REG_CTRL_START            0x80    /* WO */
 145 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 146 #define   VIA_REG_CTRL_AUTOSTART        0x20
 147 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 148 #define   VIA_REG_CTRL_INT_STOP         0x04
 149 #define   VIA_REG_CTRL_INT_EOL          0x02
 150 #define   VIA_REG_CTRL_INT_FLAG         0x01
 151 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 152 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 153 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 154 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 155 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 156 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 157 #define   VIA_REG_TYPE_INT_LLINE        0x00
 158 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 159 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 160 #define   VIA_REG_TYPE_INT_MASK         0x0c
 161 #define   VIA_REG_TYPE_INT_EOL          0x02
 162 #define   VIA_REG_TYPE_INT_FLAG         0x01
 163 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 164 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 165 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 166 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 167 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 168 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 169 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 170
 171 #define DEFINE_VIA_REGSET(name,val) \
 172 enum {\
 173         VIA_REG_##name##_STATUS         = (val),\
 174         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 175         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 176         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 177         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 178         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 179         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 180 }
 181
 182 /* playback block */
 183 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 184 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 185 DEFINE_VIA_REGSET(FM, 0x20);
 186
 187 /* AC'97 */
 188 #define VIA_REG_AC97                    0x80    /* dword */
 189 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 190 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 191 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 192 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 193 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 194 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 195 #define   VIA_REG_AC97_BUSY             (1<<24)
 196 #define   VIA_REG_AC97_READ             (1<<23)
 197 #define   VIA_REG_AC97_CMD_SHIFT        16
 198 #define   VIA_REG_AC97_CMD_MASK         0x7e
 199 #define   VIA_REG_AC97_DATA_SHIFT       0
 200 #define   VIA_REG_AC97_DATA_MASK        0xffff
 201
 202 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 203 /* via686 */
 204 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 205 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 206 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 207 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 208 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 209 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 210 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 211 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 212 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 213 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 214 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 215 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 216 /* via8233 */
 217 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 218 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 219 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 220 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 221 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 222 #define   VIA8233_REG_SGD_CHAN_SDX      0
 223 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 224 #define   VIA8233_REG_SGD_CHAN_REC      6
 225 #define   VIA8233_REG_SGD_CHAN_REC1     7
 226
 227 #define VIA_REG_GPI_STATUS              0x88
 228 #define VIA_REG_GPI_INTR                0x8c
 229
 230 /* multi-channel and capture registers for via8233 */
 231 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 232 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 233
 234 /* via8233-specific registers */
 235 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 236 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 237 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 238 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 239 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 240 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 241 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 242 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 243
 244 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 245
 246 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 247 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 248 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 249 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 250
 251 #define VIA_TBL_BIT_FLAG        0x40000000
 252 #define VIA_TBL_BIT_EOL         0x80000000
 253
 254 /* pci space */
 255 #define VIA_ACLINK_STAT         0x40
 256 #define  VIA_ACLINK_C11_READY   0x20
 257 #define  VIA_ACLINK_C10_READY   0x10
 258 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 259 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 260 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 261 #define VIA_ACLINK_CTRL         0x41
 262 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 263 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 264 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 265 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 266 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 267 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 268 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 269 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 270 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 271                                  VIA_ACLINK_CTRL_RESET|\
 272                                  VIA_ACLINK_CTRL_PCM|\
 273                                  VIA_ACLINK_CTRL_VRA)
 274 #define VIA_FUNC_ENABLE         0x42
 275 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 276 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 277 #define  VIA_FUNC_RX2C_WRITE    0x20
 278 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 279 #define  VIA_FUNC_ENABLE_GAME   0x08
 280 #define  VIA_FUNC_ENABLE_FM     0x04
 281 #define  VIA_FUNC_ENABLE_MIDI   0x02
 282 #define  VIA_FUNC_ENABLE_SB     0x01
 283 #define VIA_PNP_CONTROL         0x43
 284 #define VIA_FM_NMI_CTRL         0x48
 285 #define VIA8233_VOLCHG_CTRL     0x48
 286 #define VIA8233_SPDIF_CTRL      0x49
 287 #define  VIA8233_SPDIF_DX3      0x08
 288 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 289 #define  VIA8233_SPDIF_SLOT_1011        0x00
 290 #define  VIA8233_SPDIF_SLOT_34          0x01
 291 #define  VIA8233_SPDIF_SLOT_78          0x02
 292 #define  VIA8233_SPDIF_SLOT_69          0x03
 293
 294 /*
 295  */
 296
 297 #define VIA_DXS_AUTO    0
 298 #define VIA_DXS_ENABLE  1
 299 #define VIA_DXS_DISABLE 2
 300 #define VIA_DXS_48K     3
 301 #define VIA_DXS_NO_VRA  4
 302 #define VIA_DXS_SRC     5
 303
 304
 305 /*
 306  * pcm stream
 307  */
 308
 309 struct snd_via_sg_table {
 310         unsigned int offset;
 311         unsigned int size;
 312 } ;
 313
 314 #define VIA_TABLE_SIZE  255
 315
 316 struct viadev {
 317         unsigned int reg_offset;
 318         unsigned long port;
 319         int direction;  /* playback = 0, capture = 1 */
 320         struct snd_pcm_substream *substream;
 321         int running;
 322         unsigned int tbl_entries; /* # descriptors */
 323         struct snd_dma_buffer table;
 324         struct snd_via_sg_table *idx_table;
 325         /* for recovery from the unexpected pointer */
 326         unsigned int lastpos;
 327         unsigned int fragsize;
 328         unsigned int bufsize;
 329         unsigned int bufsize2;
 330         int hwptr_done;         /* processed frame position in the buffer */
 331         int in_interrupt;
 332         int shadow_shift;
 333 };
 334
 335
 336 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 337 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 338
 339 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 340
 341 struct via_rate_lock {
 342         spinlock_t lock;
 343         int rate;
 344         int used;
 345 };
 346
 347 struct via82xx {
 348         int irq;
 349
 350         unsigned long port;
 351         struct resource *mpu_res;
 352         int chip_type;
 353         unsigned char revision;
 354
 355         unsigned char old_legacy;
 356         unsigned char old_legacy_cfg;
 357 #ifdef CONFIG_PM
 358         unsigned char legacy_saved;
 359         unsigned char legacy_cfg_saved;
 360         unsigned char spdif_ctrl_saved;
 361         unsigned char capture_src_saved[2];
 362         unsigned int mpu_port_saved;
 363 #endif
 364
 365         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 366         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 367
 368         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 369
 370         struct pci_dev *pci;
 371         struct snd_card *card;
 372
 373         unsigned int num_devs;
 374         unsigned int playback_devno, multi_devno, capture_devno;
 375         struct viadev devs[VIA_MAX_DEVS];
 376         struct via_rate_lock rates[2]; /* playback and capture */
 377         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 378         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 379         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 380         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 381
 382         struct snd_pcm *pcms[2];
 383         struct snd_rawmidi *rmidi;
 384
 385         struct snd_ac97_bus *ac97_bus;
 386         struct snd_ac97 *ac97;
 387         unsigned int ac97_clock;
 388         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 389
 390         spinlock_t reg_lock;
 391         struct snd_info_entry *proc_entry;
 392
 393 #ifdef SUPPORT_JOYSTICK
 394         struct gameport *gameport;
 395 #endif
 396 };
 397
 398 static struct pci_device_id snd_via82xx_ids[] = {
 399         /* 0x1106, 0x3058 */
 400         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
 401         /* 0x1106, 0x3059 */
 402         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
 403         { 0, }
 404 };
 405
 406 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 407
 408 /*
 409  */
 410
 411 /*
 412  * allocate and initialize the descriptor buffers
 413  * periods = number of periods
 414  * fragsize = period size in bytes
 415  */
 416 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 417                            struct pci_dev *pci,
 418                            unsigned int periods, unsigned int fragsize)
 419 {
 420         unsigned int i, idx, ofs, rest;
 421         struct via82xx *chip = snd_pcm_substream_chip(substream);
 422         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 423
 424         if (dev->table.area == NULL) {
 425                 /* the start of each lists must be aligned to 8 bytes,
 426                  * but the kernel pages are much bigger, so we don't care
 427                  */
 428                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 429                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 430                                         &dev->table) < 0)
 431                         return -ENOMEM;
 432         }
 433         if (! dev->idx_table) {
 434                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 435                 if (! dev->idx_table)
 436                         return -ENOMEM;
 437         }
 438
 439         /* fill the entries */
 440         idx = 0;
 441         ofs = 0;
 442         for (i = 0; i < periods; i++) {
 443                 rest = fragsize;
 444                 /* fill descriptors for a period.
 445                  * a period can be split to several descriptors if it's
 446                  * over page boundary.
 447                  */
 448                 do {
 449                         unsigned int r;
 450                         unsigned int flag;
 451
 452                         if (idx >= VIA_TABLE_SIZE) {
 453                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 454                                 return -EINVAL;
 455                         }
 456                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 457                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 458                         if (rest < r)
 459                                 r = rest;
 460                         rest -= r;
 461                         if (! rest) {
 462                                 if (i == periods - 1)
 463                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 464                                 else
 465                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 466                         } else
 467                                 flag = 0; /* period continues to the next */
 468                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 469                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 470                         dev->idx_table[idx].offset = ofs;
 471                         dev->idx_table[idx].size = r;
 472                         ofs += r;
 473                         idx++;
 474                 } while (rest > 0);
 475         }
 476         dev->tbl_entries = idx;
 477         dev->bufsize = periods * fragsize;
 478         dev->bufsize2 = dev->bufsize / 2;
 479         dev->fragsize = fragsize;
 480         return 0;
 481 }
 482
 483
 484 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 485                            struct pci_dev *pci)
 486 {
 487         if (dev->table.area) {
 488                 snd_dma_free_pages(&dev->table);
 489                 dev->table.area = NULL;
 490         }
 491         kfree(dev->idx_table);
 492         dev->idx_table = NULL;
 493         return 0;
 494 }
 495
 496 /*
 497  *  Basic I/O
 498  */
 499
 500 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 501 {
 502         return inl(VIAREG(chip, AC97));
 503 }
 504
 505 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 506 {
 507         outl(val, VIAREG(chip, AC97));
 508 }
 509
 510 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 511 {
 512         unsigned int timeout = 1000;    /* 1ms */
 513         unsigned int val;
 514
 515         while (timeout-- > 0) {
 516                 udelay(1);
 517                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 518                         return val & 0xffff;
 519         }
 520         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 521                    secondary, snd_via82xx_codec_xread(chip));
 522         return -EIO;
 523 }
 524
 525 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 526 {
 527         unsigned int timeout = 1000;    /* 1ms */
 528         unsigned int val, val1;
 529         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 530                                          VIA_REG_AC97_SECONDARY_VALID;
 531
 532         while (timeout-- > 0) {
 533                 val = snd_via82xx_codec_xread(chip);
 534                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 535                 if (val1 == stat)
 536                         return val & 0xffff;
 537                 udelay(1);
 538         }
 539         return -EIO;
 540 }
 541
 542 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 543 {
 544         struct via82xx *chip = ac97->private_data;
 545         int err;
 546         err = snd_via82xx_codec_ready(chip, ac97->num);
 547         /* here we need to wait fairly for long time.. */
 548         msleep(500);
 549 }
 550
 551 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 552                                     unsigned short reg,
 553                                     unsigned short val)
 554 {
 555         struct via82xx *chip = ac97->private_data;
 556         unsigned int xval;
 557
 558         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 559         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 560         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 561         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 562         snd_via82xx_codec_xwrite(chip, xval);
 563         snd_via82xx_codec_ready(chip, ac97->num);
 564 }
 565
 566 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 567 {
 568         struct via82xx *chip = ac97->private_data;
 569         unsigned int xval, val = 0xffff;
 570         int again = 0;
 571
 572         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 573         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 574         xval |= VIA_REG_AC97_READ;
 575         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 576         while (1) {
 577                 if (again++ > 3) {
 578                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 579                                    ac97->num, snd_via82xx_codec_xread(chip));
 580                         return 0xffff;
 581                 }
 582                 snd_via82xx_codec_xwrite(chip, xval);
 583                 udelay (20);
 584                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 585                         udelay(25);
 586                         val = snd_via82xx_codec_xread(chip);
 587                         break;
 588                 }
 589         }
 590         return val & 0xffff;
 591 }
 592
 593 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 594 {
 595         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 596              VIADEV_REG(viadev, OFFSET_CONTROL));
 597         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 598         udelay(50);
 599         /* disable interrupts */
 600         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 601         /* clear interrupts */
 602         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 603         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 604         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 605         viadev->lastpos = 0;
 606         viadev->hwptr_done = 0;
 607 }
 608
 609
 610 /*
 611  *  Interrupt handler
 612  *  Used for 686 and 8233A
 613  */
 614 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 615 {
 616         struct via82xx *chip = dev_id;
 617         unsigned int status;
 618         unsigned int i;
 619
 620         status = inl(VIAREG(chip, SGD_SHADOW));
 621         if (! (status & chip->intr_mask)) {
 622                 if (chip->rmidi)
 623                         /* check mpu401 interrupt */
 624                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 625                 return IRQ_NONE;
 626         }
 627
 628         /* check status for each stream */
 629         spin_lock(&chip->reg_lock);
 630         for (i = 0; i < chip->num_devs; i++) {
 631                 struct viadev *viadev = &chip->devs[i];
 632                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 633                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 634                         continue;
 635                 if (viadev->substream && viadev->running) {
 636                         /*
 637                          * Update hwptr_done based on 'period elapsed'
 638                          * interrupts. We'll use it, when the chip returns 0
 639                          * for OFFSET_CURR_COUNT.
 640                          */
 641                         if (c_status & VIA_REG_STAT_EOL)
 642                                 viadev->hwptr_done = 0;
 643                         else
 644                                 viadev->hwptr_done += viadev->fragsize;
 645                         viadev->in_interrupt = c_status;
 646                         spin_unlock(&chip->reg_lock);
 647                         snd_pcm_period_elapsed(viadev->substream);
 648                         spin_lock(&chip->reg_lock);
 649                         viadev->in_interrupt = 0;
 650                 }
 651                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 652         }
 653         spin_unlock(&chip->reg_lock);
 654         return IRQ_HANDLED;
 655 }
 656
 657 /*
 658  *  Interrupt handler
 659  */
 660 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 661 {
 662         struct via82xx *chip = dev_id;
 663         unsigned int status;
 664         unsigned int i;
 665         int irqreturn = 0;
 666
 667         /* check status for each stream */
 668         spin_lock(&chip->reg_lock);
 669         status = inl(VIAREG(chip, SGD_SHADOW));
 670
 671         for (i = 0; i < chip->num_devs; i++) {
 672                 struct viadev *viadev = &chip->devs[i];
 673                 struct snd_pcm_substream *substream;
 674                 unsigned char c_status, shadow_status;
 675
 676                 shadow_status = (status >> viadev->shadow_shift) &
 677                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 678                          VIA_REG_STAT_FLAG);
 679                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 680                 if (!c_status)
 681                         continue;
 682
 683                 substream = viadev->substream;
 684                 if (substream && viadev->running) {
 685                         /*
 686                          * Update hwptr_done based on 'period elapsed'
 687                          * interrupts. We'll use it, when the chip returns 0
 688                          * for OFFSET_CURR_COUNT.
 689                          */
 690                         if (c_status & VIA_REG_STAT_EOL)
 691                                 viadev->hwptr_done = 0;
 692                         else
 693                                 viadev->hwptr_done += viadev->fragsize;
 694                         viadev->in_interrupt = c_status;
 695                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 696                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 697                         spin_unlock(&chip->reg_lock);
 698
 699                         snd_pcm_period_elapsed(substream);
 700
 701                         spin_lock(&chip->reg_lock);
 702                         viadev->in_interrupt = 0;
 703                 }
 704                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 705                 irqreturn = 1;
 706         }
 707         spin_unlock(&chip->reg_lock);
 708         return IRQ_RETVAL(irqreturn);
 709 }
 710
 711 /*
 712  *  PCM callbacks
 713  */
 714
 715 /*
 716  * trigger callback
 717  */
 718 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 719 {
 720         struct via82xx *chip = snd_pcm_substream_chip(substream);
 721         struct viadev *viadev = substream->runtime->private_data;
 722         unsigned char val;
 723
 724         if (chip->chip_type != TYPE_VIA686)
 725                 val = VIA_REG_CTRL_INT;
 726         else
 727                 val = 0;
 728         switch (cmd) {
 729         case SNDRV_PCM_TRIGGER_START:
 730         case SNDRV_PCM_TRIGGER_RESUME:
 731                 val |= VIA_REG_CTRL_START;
 732                 viadev->running = 1;
 733                 break;
 734         case SNDRV_PCM_TRIGGER_STOP:
 735         case SNDRV_PCM_TRIGGER_SUSPEND:
 736                 val = VIA_REG_CTRL_TERMINATE;
 737                 viadev->running = 0;
 738                 break;
 739         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 740                 val |= VIA_REG_CTRL_PAUSE;
 741                 viadev->running = 0;
 742                 break;
 743         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 744                 viadev->running = 1;
 745                 break;
 746         default:
 747                 return -EINVAL;
 748         }
 749         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 750         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 751                 snd_via82xx_channel_reset(chip, viadev);
 752         return 0;
 753 }
 754
 755
 756 /*
 757  * pointer callbacks
 758  */
 759
 760 /*
 761  * calculate the linear position at the given sg-buffer index and the rest count
 762  */
 763
 764 #define check_invalid_pos(viadev,pos) \
 765         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 766                                      viadev->lastpos < viadev->bufsize2))
 767
 768 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 769                                            unsigned int count)
 770 {
 771         unsigned int size, base, res;
 772
 773         size = viadev->idx_table[idx].size;
 774         base = viadev->idx_table[idx].offset;
 775         res = base + size - count;
 776         if (res >= viadev->bufsize)
 777                 res -= viadev->bufsize;
 778
 779         /* check the validity of the calculated position */
 780         if (size < count) {
 781                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 782                            (int)size, (int)count);
 783                 res = viadev->lastpos;
 784         } else {
 785                 if (! count) {
 786                         /* Some mobos report count = 0 on the DMA boundary,
 787                          * i.e. count = size indeed.
 788                          * Let's check whether this step is above the expected size.
 789                          */
 790                         int delta = res - viadev->lastpos;
 791                         if (delta < 0)
 792                                 delta += viadev->bufsize;
 793                         if ((unsigned int)delta > viadev->fragsize)
 794                                 res = base;
 795                 }
 796                 if (check_invalid_pos(viadev, res)) {
 797 #ifdef POINTER_DEBUG
 798                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 799                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 800                                "count = 0x%x\n", idx, viadev->tbl_entries,
 801                                viadev->lastpos, viadev->bufsize2,
 802                                viadev->idx_table[idx].offset,
 803                                viadev->idx_table[idx].size, count);
 804 #endif
 805                         /* count register returns full size when end of buffer is reached */
 806                         res = base + size;
 807                         if (check_invalid_pos(viadev, res)) {
 808                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 809                                            "using last valid pointer\n");
 810                                 res = viadev->lastpos;
 811                         }
 812                 }
 813         }
 814         return res;
 815 }
 816
 817 /*
 818  * get the current pointer on via686
 819  */
 820 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 821 {
 822         struct via82xx *chip = snd_pcm_substream_chip(substream);
 823         struct viadev *viadev = substream->runtime->private_data;
 824         unsigned int idx, ptr, count, res;
 825
 826         snd_assert(viadev->tbl_entries, return 0);
 827         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 828                 return 0;
 829
 830         spin_lock(&chip->reg_lock);
 831         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 832         /* The via686a does not have the current index register,
 833          * so we need to calculate the index from CURR_PTR.
 834          */
 835         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 836         if (ptr <= (unsigned int)viadev->table.addr)
 837                 idx = 0;
 838         else /* CURR_PTR holds the address + 8 */
 839                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 840         res = calc_linear_pos(viadev, idx, count);
 841         viadev->lastpos = res; /* remember the last position */
 842         spin_unlock(&chip->reg_lock);
 843
 844         return bytes_to_frames(substream->runtime, res);
 845 }
 846
 847 /*
 848  * get the current pointer on via823x
 849  */
 850 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 851 {
 852         struct via82xx *chip = snd_pcm_substream_chip(substream);
 853         struct viadev *viadev = substream->runtime->private_data;
 854         unsigned int idx, count, res;
 855         int status;
 856
 857         snd_assert(viadev->tbl_entries, return 0);
 858
 859         spin_lock(&chip->reg_lock);
 860         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 861         status = viadev->in_interrupt;
 862         if (!status)
 863                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 864
 865         if (!(status & VIA_REG_STAT_ACTIVE)) {
 866                 res = 0;
 867                 goto unlock;
 868         }
 869         if (count & 0xffffff) {
 870                 idx = count >> 24;
 871                 if (idx >= viadev->tbl_entries) {
 872 #ifdef POINTER_DEBUG
 873                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 874                                viadev->tbl_entries);
 875 #endif
 876                         res = viadev->lastpos;
 877                 } else {
 878                         count &= 0xffffff;
 879                         res = calc_linear_pos(viadev, idx, count);
 880                 }
 881         } else {
 882                 res = viadev->hwptr_done;
 883                 if (!viadev->in_interrupt) {
 884                         if (status & VIA_REG_STAT_EOL) {
 885                                 res = 0;
 886                         } else
 887                                 if (status & VIA_REG_STAT_FLAG) {
 888                                         res += viadev->fragsize;
 889                                 }
 890                 }
 891         }
 892 unlock:
 893         viadev->lastpos = res;
 894         spin_unlock(&chip->reg_lock);
 895
 896         return bytes_to_frames(substream->runtime, res);
 897 }
 898
 899
 900 /*
 901  * hw_params callback:
 902  * allocate the buffer and build up the buffer description table
 903  */
 904 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 905                                  struct snd_pcm_hw_params *hw_params)
 906 {
 907         struct via82xx *chip = snd_pcm_substream_chip(substream);
 908         struct viadev *viadev = substream->runtime->private_data;
 909         int err;
 910
 911         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 912         if (err < 0)
 913                 return err;
 914         err = build_via_table(viadev, substream, chip->pci,
 915                               params_periods(hw_params),
 916                               params_period_bytes(hw_params));
 917         if (err < 0)
 918                 return err;
 919
 920         return 0;
 921 }
 922
 923 /*
 924  * hw_free callback:
 925  * clean up the buffer description table and release the buffer
 926  */
 927 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 928 {
 929         struct via82xx *chip = snd_pcm_substream_chip(substream);
 930         struct viadev *viadev = substream->runtime->private_data;
 931
 932         clean_via_table(viadev, substream, chip->pci);
 933         snd_pcm_lib_free_pages(substream);
 934         return 0;
 935 }
 936
 937
 938 /*
 939  * set up the table pointer
 940  */
 941 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 942 {
 943         snd_via82xx_codec_ready(chip, 0);
 944         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 945         udelay(20);
 946         snd_via82xx_codec_ready(chip, 0);
 947 }
 948
 949 /*
 950  * prepare callback for playback and capture on via686
 951  */
 952 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 953                                 struct snd_pcm_runtime *runtime)
 954 {
 955         snd_via82xx_channel_reset(chip, viadev);
 956         /* this must be set after channel_reset */
 957         snd_via82xx_set_table_ptr(chip, viadev);
 958         outb(VIA_REG_TYPE_AUTOSTART |
 959              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 960              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 961              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 962              VIA_REG_TYPE_INT_EOL |
 963              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 964 }
 965
 966 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 967 {
 968         struct via82xx *chip = snd_pcm_substream_chip(substream);
 969         struct viadev *viadev = substream->runtime->private_data;
 970         struct snd_pcm_runtime *runtime = substream->runtime;
 971
 972         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 973         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 974         via686_setup_format(chip, viadev, runtime);
 975         return 0;
 976 }
 977
 978 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 979 {
 980         struct via82xx *chip = snd_pcm_substream_chip(substream);
 981         struct viadev *viadev = substream->runtime->private_data;
 982         struct snd_pcm_runtime *runtime = substream->runtime;
 983
 984         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 985         via686_setup_format(chip, viadev, runtime);
 986         return 0;
 987 }
 988
 989 /*
 990  * lock the current rate
 991  */
 992 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 993 {
 994         int changed = 0;
 995
 996         spin_lock_irq(&rec->lock);
 997         if (rec->rate != rate) {
 998                 if (rec->rate && rec->used > 1) /* already set */
 999                         changed = -EINVAL;
1000                 else {
1001                         rec->rate = rate;
1002                         changed = 1;
1003                 }
1004         }
1005         spin_unlock_irq(&rec->lock);
1006         return changed;
1007 }
1008
1009 /*
1010  * prepare callback for DSX playback on via823x
1011  */
1012 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1013 {
1014         struct via82xx *chip = snd_pcm_substream_chip(substream);
1015         struct viadev *viadev = substream->runtime->private_data;
1016         struct snd_pcm_runtime *runtime = substream->runtime;
1017         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1018         int rate_changed;
1019         u32 rbits;
1020
1021         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1022                 return rate_changed;
1023         if (rate_changed)
1024                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1025                                   chip->no_vra ? 48000 : runtime->rate);
1026         if (chip->spdif_on && viadev->reg_offset == 0x30)
1027                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1028
1029         if (runtime->rate == 48000)
1030                 rbits = 0xfffff;
1031         else
1032                 rbits = (0x100000 / 48000) * runtime->rate +
1033                         ((0x100000 % 48000) * runtime->rate) / 48000;
1034         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
1035         snd_via82xx_channel_reset(chip, viadev);
1036         snd_via82xx_set_table_ptr(chip, viadev);
1037         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1038              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1039         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1040              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1041         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1042              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1043              rbits | /* rate */
1044              0xff000000,    /* STOP index is never reached */
1045              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1046         udelay(20);
1047         snd_via82xx_codec_ready(chip, 0);
1048         return 0;
1049 }
1050
1051 /*
1052  * prepare callback for multi-channel playback on via823x
1053  */
1054 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1055 {
1056         struct via82xx *chip = snd_pcm_substream_chip(substream);
1057         struct viadev *viadev = substream->runtime->private_data;
1058         struct snd_pcm_runtime *runtime = substream->runtime;
1059         unsigned int slots;
1060         int fmt;
1061
1062         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1063                 return -EINVAL;
1064         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1065         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1066         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1067         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1068         snd_via82xx_channel_reset(chip, viadev);
1069         snd_via82xx_set_table_ptr(chip, viadev);
1070
1071         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1072                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1073         fmt |= runtime->channels << 4;
1074         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1075 #if 0
1076         if (chip->revision == VIA_REV_8233A)
1077                 slots = 0;
1078         else
1079 #endif
1080         {
1081                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1082                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1083                 switch (runtime->channels) {
1084                 case 1: slots = (1<<0) | (1<<4); break;
1085                 case 2: slots = (1<<0) | (2<<4); break;
1086                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1087                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1088                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1089                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1090                 default: slots = 0; break;
1091                 }
1092         }
1093         /* STOP index is never reached */
1094         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1095         udelay(20);
1096         snd_via82xx_codec_ready(chip, 0);
1097         return 0;
1098 }
1099
1100 /*
1101  * prepare callback for capture on via823x
1102  */
1103 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1104 {
1105         struct via82xx *chip = snd_pcm_substream_chip(substream);
1106         struct viadev *viadev = substream->runtime->private_data;
1107         struct snd_pcm_runtime *runtime = substream->runtime;
1108
1109         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1110                 return -EINVAL;
1111         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1112         snd_via82xx_channel_reset(chip, viadev);
1113         snd_via82xx_set_table_ptr(chip, viadev);
1114         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1115         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1116              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1117              0xff000000,    /* STOP index is never reached */
1118              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1119         udelay(20);
1120         snd_via82xx_codec_ready(chip, 0);
1121         return 0;
1122 }
1123
1124
1125 /*
1126  * pcm hardware definition, identical for both playback and capture
1127  */
1128 static struct snd_pcm_hardware snd_via82xx_hw =
1129 {
1130         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1131                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1132                                  SNDRV_PCM_INFO_MMAP_VALID |
1133                                  /* SNDRV_PCM_INFO_RESUME | */
1134                                  SNDRV_PCM_INFO_PAUSE),
1135         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1136         .rates =                SNDRV_PCM_RATE_48000,
1137         .rate_min =             48000,
1138         .rate_max =             48000,
1139         .channels_min =         1,
1140         .channels_max =         2,
1141         .buffer_bytes_max =     128 * 1024,
1142         .period_bytes_min =     32,
1143         .period_bytes_max =     128 * 1024,
1144         .periods_min =          2,
1145         .periods_max =          VIA_TABLE_SIZE / 2,
1146         .fifo_size =            0,
1147 };
1148
1149
1150 /*
1151  * open callback skeleton
1152  */
1153 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1154                                 struct snd_pcm_substream *substream)
1155 {
1156         struct snd_pcm_runtime *runtime = substream->runtime;
1157         int err;
1158         struct via_rate_lock *ratep;
1159
1160         runtime->hw = snd_via82xx_hw;
1161
1162         /* set the hw rate condition */
1163         ratep = &chip->rates[viadev->direction];
1164         spin_lock_irq(&ratep->lock);
1165         ratep->used++;
1166         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1167                 /* DXS#3 and spdif is on */
1168                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1169                 snd_pcm_limit_hw_rates(runtime);
1170         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1171                 /* fixed DXS playback rate */
1172                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1173                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1174         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1175                 /* use full SRC capabilities of DXS */
1176                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1177                                      SNDRV_PCM_RATE_8000_48000);
1178                 runtime->hw.rate_min = 8000;
1179                 runtime->hw.rate_max = 48000;
1180         } else if (! ratep->rate) {
1181                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1182                 runtime->hw.rates = chip->ac97->rates[idx];
1183                 snd_pcm_limit_hw_rates(runtime);
1184         } else {
1185                 /* a fixed rate */
1186                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1187                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1188         }
1189         spin_unlock_irq(&ratep->lock);
1190
1191         /* we may remove following constaint when we modify table entries
1192            in interrupt */
1193         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1194                 return err;
1195
1196         runtime->private_data = viadev;
1197         viadev->substream = substream;
1198
1199         return 0;
1200 }
1201
1202
1203 /*
1204  * open callback for playback on via686 and via823x DSX
1205  */
1206 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1207 {
1208         struct via82xx *chip = snd_pcm_substream_chip(substream);
1209         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1210         int err;
1211
1212         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1213                 return err;
1214         return 0;
1215 }
1216
1217 /*
1218  * open callback for playback on via823x multi-channel
1219  */
1220 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1221 {
1222         struct via82xx *chip = snd_pcm_substream_chip(substream);
1223         struct viadev *viadev = &chip->devs[chip->multi_devno];
1224         int err;
1225         /* channels constraint for VIA8233A
1226          * 3 and 5 channels are not supported
1227          */
1228         static unsigned int channels[] = {
1229                 1, 2, 4, 6
1230         };
1231         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1232                 .count = ARRAY_SIZE(channels),
1233                 .list = channels,
1234                 .mask = 0,
1235         };
1236
1237         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1238                 return err;
1239         substream->runtime->hw.channels_max = 6;
1240         if (chip->revision == VIA_REV_8233A)
1241                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1242                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1243                                            &hw_constraints_channels);
1244         return 0;
1245 }
1246
1247 /*
1248  * open callback for capture on via686 and via823x
1249  */
1250 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1251 {
1252         struct via82xx *chip = snd_pcm_substream_chip(substream);
1253         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1254
1255         return snd_via82xx_pcm_open(chip, viadev, substream);
1256 }
1257
1258 /*
1259  * close callback
1260  */
1261 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1262 {
1263         struct via82xx *chip = snd_pcm_substream_chip(substream);
1264         struct viadev *viadev = substream->runtime->private_data;
1265         struct via_rate_lock *ratep;
1266
1267         /* release the rate lock */
1268         ratep = &chip->rates[viadev->direction];
1269         spin_lock_irq(&ratep->lock);
1270         ratep->used--;
1271         if (! ratep->used)
1272                 ratep->rate = 0;
1273         spin_unlock_irq(&ratep->lock);
1274
1275         viadev->substream = NULL;
1276         return 0;
1277 }
1278
1279
1280 /* via686 playback callbacks */
1281 static struct snd_pcm_ops snd_via686_playback_ops = {
1282         .open =         snd_via82xx_playback_open,
1283         .close =        snd_via82xx_pcm_close,
1284         .ioctl =        snd_pcm_lib_ioctl,
1285         .hw_params =    snd_via82xx_hw_params,
1286         .hw_free =      snd_via82xx_hw_free,
1287         .prepare =      snd_via686_playback_prepare,
1288         .trigger =      snd_via82xx_pcm_trigger,
1289         .pointer =      snd_via686_pcm_pointer,
1290         .page =         snd_pcm_sgbuf_ops_page,
1291 };
1292
1293 /* via686 capture callbacks */
1294 static struct snd_pcm_ops snd_via686_capture_ops = {
1295         .open =         snd_via82xx_capture_open,
1296         .close =        snd_via82xx_pcm_close,
1297         .ioctl =        snd_pcm_lib_ioctl,
1298         .hw_params =    snd_via82xx_hw_params,
1299         .hw_free =      snd_via82xx_hw_free,
1300         .prepare =      snd_via686_capture_prepare,
1301         .trigger =      snd_via82xx_pcm_trigger,
1302         .pointer =      snd_via686_pcm_pointer,
1303         .page =         snd_pcm_sgbuf_ops_page,
1304 };
1305
1306 /* via823x DSX playback callbacks */
1307 static struct snd_pcm_ops snd_via8233_playback_ops = {
1308         .open =         snd_via82xx_playback_open,
1309         .close =        snd_via82xx_pcm_close,
1310         .ioctl =        snd_pcm_lib_ioctl,
1311         .hw_params =    snd_via82xx_hw_params,
1312         .hw_free =      snd_via82xx_hw_free,
1313         .prepare =      snd_via8233_playback_prepare,
1314         .trigger =      snd_via82xx_pcm_trigger,
1315         .pointer =      snd_via8233_pcm_pointer,
1316         .page =         snd_pcm_sgbuf_ops_page,
1317 };
1318
1319 /* via823x multi-channel playback callbacks */
1320 static struct snd_pcm_ops snd_via8233_multi_ops = {
1321         .open =         snd_via8233_multi_open,
1322         .close =        snd_via82xx_pcm_close,
1323         .ioctl =        snd_pcm_lib_ioctl,
1324         .hw_params =    snd_via82xx_hw_params,
1325         .hw_free =      snd_via82xx_hw_free,
1326         .prepare =      snd_via8233_multi_prepare,
1327         .trigger =      snd_via82xx_pcm_trigger,
1328         .pointer =      snd_via8233_pcm_pointer,
1329         .page =         snd_pcm_sgbuf_ops_page,
1330 };
1331
1332 /* via823x capture callbacks */
1333 static struct snd_pcm_ops snd_via8233_capture_ops = {
1334         .open =         snd_via82xx_capture_open,
1335         .close =        snd_via82xx_pcm_close,
1336         .ioctl =        snd_pcm_lib_ioctl,
1337         .hw_params =    snd_via82xx_hw_params,
1338         .hw_free =      snd_via82xx_hw_free,
1339         .prepare =      snd_via8233_capture_prepare,
1340         .trigger =      snd_via82xx_pcm_trigger,
1341         .pointer =      snd_via8233_pcm_pointer,
1342         .page =         snd_pcm_sgbuf_ops_page,
1343 };
1344
1345
1346 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1347                         int shadow_pos, int direction)
1348 {
1349         chip->devs[idx].reg_offset = reg_offset;
1350         chip->devs[idx].shadow_shift = shadow_pos * 4;
1351         chip->devs[idx].direction = direction;
1352         chip->devs[idx].port = chip->port + reg_offset;
1353 }
1354
1355 /*
1356  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1357  */
1358 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1359 {
1360         struct snd_pcm *pcm;
1361         int i, err;
1362
1363         chip->playback_devno = 0;       /* x 4 */
1364         chip->multi_devno = 4;          /* x 1 */
1365         chip->capture_devno = 5;        /* x 2 */
1366         chip->num_devs = 7;
1367         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1368
1369         /* PCM #0:  4 DSX playbacks and 1 capture */
1370         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1371         if (err < 0)
1372                 return err;
1373         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1374         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1375         pcm->private_data = chip;
1376         strcpy(pcm->name, chip->card->shortname);
1377         chip->pcms[0] = pcm;
1378         /* set up playbacks */
1379         for (i = 0; i < 4; i++)
1380                 init_viadev(chip, i, 0x10 * i, i, 0);
1381         /* capture */
1382         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1383
1384         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1385                                                          snd_dma_pci_data(chip->pci),
1386                                                          64*1024, 128*1024)) < 0)
1387                 return err;
1388
1389         /* PCM #1:  multi-channel playback and 2nd capture */
1390         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1391         if (err < 0)
1392                 return err;
1393         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1394         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1395         pcm->private_data = chip;
1396         strcpy(pcm->name, chip->card->shortname);
1397         chip->pcms[1] = pcm;
1398         /* set up playback */
1399         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1400         /* set up capture */
1401         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1402
1403         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1404                                                          snd_dma_pci_data(chip->pci),
1405                                                          64*1024, 128*1024)) < 0)
1406                 return err;
1407
1408         return 0;
1409 }
1410
1411 /*
1412  * create pcm instances for VIA8233A
1413  */
1414 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1415 {
1416         struct snd_pcm *pcm;
1417         int err;
1418
1419         chip->multi_devno = 0;
1420         chip->playback_devno = 1;
1421         chip->capture_devno = 2;
1422         chip->num_devs = 3;
1423         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1424
1425         /* PCM #0:  multi-channel playback and capture */
1426         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1427         if (err < 0)
1428                 return err;
1429         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1430         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1431         pcm->private_data = chip;
1432         strcpy(pcm->name, chip->card->shortname);
1433         chip->pcms[0] = pcm;
1434         /* set up playback */
1435         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1436         /* capture */
1437         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1438
1439         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1440                                                          snd_dma_pci_data(chip->pci),
1441                                                          64*1024, 128*1024)) < 0)
1442                 return err;
1443
1444         /* SPDIF supported? */
1445         if (! ac97_can_spdif(chip->ac97))
1446                 return 0;
1447
1448         /* PCM #1:  DXS3 playback (for spdif) */
1449         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1450         if (err < 0)
1451                 return err;
1452         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1453         pcm->private_data = chip;
1454         strcpy(pcm->name, chip->card->shortname);
1455         chip->pcms[1] = pcm;
1456         /* set up playback */
1457         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1458
1459         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1460                                                          snd_dma_pci_data(chip->pci),
1461                                                          64*1024, 128*1024)) < 0)
1462                 return err;
1463
1464         return 0;
1465 }
1466
1467 /*
1468  * create a pcm instance for via686a/b
1469  */
1470 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1471 {
1472         struct snd_pcm *pcm;
1473         int err;
1474
1475         chip->playback_devno = 0;
1476         chip->capture_devno = 1;
1477         chip->num_devs = 2;
1478         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1479
1480         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1481         if (err < 0)
1482                 return err;
1483         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1484         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1485         pcm->private_data = chip;
1486         strcpy(pcm->name, chip->card->shortname);
1487         chip->pcms[0] = pcm;
1488         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1489         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1490
1491         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1492                                                          snd_dma_pci_data(chip->pci),
1493                                                          64*1024, 128*1024)) < 0)
1494                 return err;
1495
1496         return 0;
1497 }
1498
1499
1500 /*
1501  *  Mixer part
1502  */
1503
1504 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1505                                            struct snd_ctl_elem_info *uinfo)
1506 {
1507         /* formerly they were "Line" and "Mic", but it looks like that they
1508          * have nothing to do with the actual physical connections...
1509          */
1510         static char *texts[2] = {
1511                 "Input1", "Input2"
1512         };
1513         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1514         uinfo->count = 1;
1515         uinfo->value.enumerated.items = 2;
1516         if (uinfo->value.enumerated.item >= 2)
1517                 uinfo->value.enumerated.item = 1;
1518         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1519         return 0;
1520 }
1521
1522 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1523                                           struct snd_ctl_elem_value *ucontrol)
1524 {
1525         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1526         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1527         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1528         return 0;
1529 }
1530
1531 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1532                                           struct snd_ctl_elem_value *ucontrol)
1533 {
1534         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1535         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1536         u8 val, oval;
1537
1538         spin_lock_irq(&chip->reg_lock);
1539         oval = inb(port);
1540         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1541         if (ucontrol->value.enumerated.item[0])
1542                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1543         if (val != oval)
1544                 outb(val, port);
1545         spin_unlock_irq(&chip->reg_lock);
1546         return val != oval;
1547 }
1548
1549 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1550         .name = "Input Source Select",
1551         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1552         .info = snd_via8233_capture_source_info,
1553         .get = snd_via8233_capture_source_get,
1554         .put = snd_via8233_capture_source_put,
1555 };
1556
1557 static int snd_via8233_dxs3_spdif_info(struct snd_kcontrol *kcontrol,
1558                                        struct snd_ctl_elem_info *uinfo)
1559 {
1560         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1561         uinfo->count = 1;
1562         uinfo->value.integer.min = 0;
1563         uinfo->value.integer.max = 1;
1564         return 0;
1565 }
1566
1567 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1568                                       struct snd_ctl_elem_value *ucontrol)
1569 {
1570         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1571         u8 val;
1572
1573         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1574         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1575         return 0;
1576 }
1577
1578 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1579                                       struct snd_ctl_elem_value *ucontrol)
1580 {
1581         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1582         u8 val, oval;
1583
1584         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1585         val = oval & ~VIA8233_SPDIF_DX3;
1586         if (ucontrol->value.integer.value[0])
1587                 val |= VIA8233_SPDIF_DX3;
1588         /* save the spdif flag for rate filtering */
1589         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1590         if (val != oval) {
1591                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1592                 return 1;
1593         }
1594         return 0;
1595 }
1596
1597 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1598         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1599         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1600         .info = snd_via8233_dxs3_spdif_info,
1601         .get = snd_via8233_dxs3_spdif_get,
1602         .put = snd_via8233_dxs3_spdif_put,
1603 };
1604
1605 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1606                                        struct snd_ctl_elem_info *uinfo)
1607 {
1608         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1609         uinfo->count = 2;
1610         uinfo->value.integer.min = 0;
1611         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1612         return 0;
1613 }
1614
1615 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1616                                       struct snd_ctl_elem_value *ucontrol)
1617 {
1618         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1619         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1620
1621         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1622         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1623         return 0;
1624 }
1625
1626 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1627                                          struct snd_ctl_elem_value *ucontrol)
1628 {
1629         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1630         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1631         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1632         return 0;
1633 }
1634
1635 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1636                                       struct snd_ctl_elem_value *ucontrol)
1637 {
1638         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1639         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1640         unsigned long port = chip->port + 0x10 * idx;
1641         unsigned char val;
1642         int i, change = 0;
1643
1644         for (i = 0; i < 2; i++) {
1645                 val = ucontrol->value.integer.value[i];
1646                 if (val > VIA_DXS_MAX_VOLUME)
1647                         val = VIA_DXS_MAX_VOLUME;
1648                 val = VIA_DXS_MAX_VOLUME - val;
1649                 change |= val != chip->playback_volume[idx][i];
1650                 if (change) {
1651                         chip->playback_volume[idx][i] = val;
1652                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1653                 }
1654         }
1655         return change;
1656 }
1657
1658 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1659                                          struct snd_ctl_elem_value *ucontrol)
1660 {
1661         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1662         unsigned int idx;
1663         unsigned char val;
1664         int i, change = 0;
1665
1666         for (i = 0; i < 2; i++) {
1667                 val = ucontrol->value.integer.value[i];
1668                 if (val > VIA_DXS_MAX_VOLUME)
1669                         val = VIA_DXS_MAX_VOLUME;
1670                 val = VIA_DXS_MAX_VOLUME - val;
1671                 if (val != chip->playback_volume_c[i]) {
1672                         change = 1;
1673                         chip->playback_volume_c[i] = val;
1674                         for (idx = 0; idx < 4; idx++) {
1675                                 unsigned long port = chip->port + 0x10 * idx;
1676                                 chip->playback_volume[idx][i] = val;
1677                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1678                         }
1679                 }
1680         }
1681         return change;
1682 }
1683
1684 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1685         .name = "PCM Playback Volume",
1686         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1687         .info = snd_via8233_dxs_volume_info,
1688         .get = snd_via8233_pcmdxs_volume_get,
1689         .put = snd_via8233_pcmdxs_volume_put,
1690 };
1691
1692 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1693         .name = "VIA DXS Playback Volume",
1694         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1695         .count = 4,
1696         .info = snd_via8233_dxs_volume_info,
1697         .get = snd_via8233_dxs_volume_get,
1698         .put = snd_via8233_dxs_volume_put,
1699 };
1700
1701 /*
1702  */
1703
1704 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1705 {
1706         struct via82xx *chip = bus->private_data;
1707         chip->ac97_bus = NULL;
1708 }
1709
1710 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1711 {
1712         struct via82xx *chip = ac97->private_data;
1713         chip->ac97 = NULL;
1714 }
1715
1716 static struct ac97_quirk ac97_quirks[] = {
1717         {
1718                 .subvendor = 0x1106,
1719                 .subdevice = 0x4161,
1720                 .codec_id = 0x56494161, /* VT1612A */
1721                 .name = "Soltek SL-75DRV5",
1722                 .type = AC97_TUNE_NONE
1723         },
1724         {       /* FIXME: which codec? */
1725                 .subvendor = 0x1106,
1726                 .subdevice = 0x4161,
1727                 .name = "ASRock K7VT2",
1728                 .type = AC97_TUNE_HP_ONLY
1729         },
1730         {
1731                 .subvendor = 0x1019,
1732                 .subdevice = 0x0a81,
1733                 .name = "ECS K7VTA3",
1734                 .type = AC97_TUNE_HP_ONLY
1735         },
1736         {
1737                 .subvendor = 0x1019,
1738                 .subdevice = 0x0a85,
1739                 .name = "ECS L7VMM2",
1740                 .type = AC97_TUNE_HP_ONLY
1741         },
1742         {
1743                 .subvendor = 0x1849,
1744                 .subdevice = 0x3059,
1745                 .name = "ASRock K7VM2",
1746                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1747         },
1748         {
1749                 .subvendor = 0x14cd,
1750                 .subdevice = 0x7002,
1751                 .name = "Unknown",
1752                 .type = AC97_TUNE_ALC_JACK
1753         },
1754         {
1755                 .subvendor = 0x1071,
1756                 .subdevice = 0x8590,
1757                 .name = "Mitac Mobo",
1758                 .type = AC97_TUNE_ALC_JACK
1759         },
1760         {
1761                 .subvendor = 0x161f,
1762                 .subdevice = 0x202b,
1763                 .name = "Arima Notebook",
1764                 .type = AC97_TUNE_HP_ONLY,
1765         },
1766         {
1767                 .subvendor = 0x161f,
1768                 .subdevice = 0x2032,
1769                 .name = "Targa Traveller 811",
1770                 .type = AC97_TUNE_HP_ONLY,
1771         },
1772         { } /* terminator */
1773 };
1774
1775 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1776 {
1777         struct snd_ac97_template ac97;
1778         int err;
1779         static struct snd_ac97_bus_ops ops = {
1780                 .write = snd_via82xx_codec_write,
1781                 .read = snd_via82xx_codec_read,
1782                 .wait = snd_via82xx_codec_wait,
1783         };
1784
1785         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1786                 return err;
1787         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1788         chip->ac97_bus->clock = chip->ac97_clock;
1789
1790         memset(&ac97, 0, sizeof(ac97));
1791         ac97.private_data = chip;
1792         ac97.private_free = snd_via82xx_mixer_free_ac97;
1793         ac97.pci = chip->pci;
1794         ac97.scaps = AC97_SCAP_SKIP_MODEM;
1795         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1796                 return err;
1797
1798         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1799
1800         if (chip->chip_type != TYPE_VIA686) {
1801                 /* use slot 10/11 */
1802                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1803         }
1804
1805         return 0;
1806 }
1807
1808 #ifdef SUPPORT_JOYSTICK
1809 #define JOYSTICK_ADDR   0x200
1810 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1811 {
1812         struct gameport *gp;
1813         struct resource *r;
1814
1815         if (!joystick)
1816                 return -ENODEV;
1817
1818         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1819         if (!r) {
1820                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1821                        JOYSTICK_ADDR);
1822                 return -EBUSY;
1823         }
1824
1825         chip->gameport = gp = gameport_allocate_port();
1826         if (!gp) {
1827                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1828                 release_and_free_resource(r);
1829                 return -ENOMEM;
1830         }
1831
1832         gameport_set_name(gp, "VIA686 Gameport");
1833         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1834         gameport_set_dev_parent(gp, &chip->pci->dev);
1835         gp->io = JOYSTICK_ADDR;
1836         gameport_set_port_data(gp, r);
1837
1838         /* Enable legacy joystick port */
1839         *legacy |= VIA_FUNC_ENABLE_GAME;
1840         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1841
1842         gameport_register_port(chip->gameport);
1843
1844         return 0;
1845 }
1846
1847 static void snd_via686_free_gameport(struct via82xx *chip)
1848 {
1849         if (chip->gameport) {
1850                 struct resource *r = gameport_get_port_data(chip->gameport);
1851
1852                 gameport_unregister_port(chip->gameport);
1853                 chip->gameport = NULL;
1854                 release_and_free_resource(r);
1855         }
1856 }
1857 #else
1858 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1859 {
1860         return -ENOSYS;
1861 }
1862 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1863 #endif
1864
1865
1866 /*
1867  *
1868  */
1869
1870 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1871 {
1872         int i, err, caps;
1873         unsigned char val;
1874
1875         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1876         for (i = 0; i < caps; i++) {
1877                 snd_via8233_capture_source.index = i;
1878                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1879                 if (err < 0)
1880                         return err;
1881         }
1882         if (ac97_can_spdif(chip->ac97)) {
1883                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1884                 if (err < 0)
1885                         return err;
1886         }
1887         if (chip->chip_type != TYPE_VIA8233A) {
1888                 /* when no h/w PCM volume control is found, use DXS volume control
1889                  * as the PCM vol control
1890                  */
1891                 struct snd_ctl_elem_id sid;
1892                 memset(&sid, 0, sizeof(sid));
1893                 strcpy(sid.name, "PCM Playback Volume");
1894                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1895                 if (! snd_ctl_find_id(chip->card, &sid)) {
1896                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1897                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1898                         if (err < 0)
1899                                 return err;
1900                 }
1901                 else /* Using DXS when PCM emulation is enabled is really weird */
1902                 {
1903                         /* Standalone DXS controls */
1904                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1905                         if (err < 0)
1906                                 return err;
1907                 }
1908         }
1909         /* select spdif data slot 10/11 */
1910         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1911         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1912         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1913         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1914
1915         return 0;
1916 }
1917
1918 static int __devinit snd_via686_init_misc(struct via82xx *chip)
1919 {
1920         unsigned char legacy, legacy_cfg;
1921         int rev_h = 0;
1922
1923         legacy = chip->old_legacy;
1924         legacy_cfg = chip->old_legacy_cfg;
1925         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1926         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1927         if (chip->revision >= VIA_REV_686_H) {
1928                 rev_h = 1;
1929                 if (mpu_port >= 0x200) {        /* force MIDI */
1930                         mpu_port &= 0xfffc;
1931                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1932 #ifdef CONFIG_PM
1933                         chip->mpu_port_saved = mpu_port;
1934 #endif
1935                 } else {
1936                         mpu_port = pci_resource_start(chip->pci, 2);
1937                 }
1938         } else {
1939                 switch (mpu_port) {     /* force MIDI */
1940                 case 0x300:
1941                 case 0x310:
1942                 case 0x320:
1943                 case 0x330:
1944                         legacy_cfg &= ~(3 << 2);
1945                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1946                         break;
1947                 default:                        /* no, use BIOS settings */
1948                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1949                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1950                         break;
1951                 }
1952         }
1953         if (mpu_port >= 0x200 &&
1954             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1955             != NULL) {
1956                 if (rev_h)
1957                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1958                 legacy |= VIA_FUNC_ENABLE_MIDI;
1959         } else {
1960                 if (rev_h)
1961                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1962                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1963                 mpu_port = 0;
1964         }
1965
1966         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1967         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1968         if (chip->mpu_res) {
1969                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1970                                         mpu_port, 1,
1971                                         chip->irq, 0, &chip->rmidi) < 0) {
1972                         printk(KERN_WARNING "unable to initialize MPU-401"
1973                                " at 0x%lx, skipping\n", mpu_port);
1974                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1975                 } else {
1976                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1977                 }
1978                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1979         }
1980
1981         snd_via686_create_gameport(chip, &legacy);
1982
1983 #ifdef CONFIG_PM
1984         chip->legacy_saved = legacy;
1985         chip->legacy_cfg_saved = legacy_cfg;
1986 #endif
1987
1988         return 0;
1989 }
1990
1991
1992 /*
1993  * proc interface
1994  */
1995 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
1996                                   struct snd_info_buffer *buffer)
1997 {
1998         struct via82xx *chip = entry->private_data;
1999         int i;
2000
2001         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2002         for (i = 0; i < 0xa0; i += 4) {
2003                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2004         }
2005 }
2006
2007 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2008 {
2009         struct snd_info_entry *entry;
2010
2011         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2012                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
2013 }
2014
2015 /*
2016  *
2017  */
2018
2019 static int snd_via82xx_chip_init(struct via82xx *chip)
2020 {
2021         unsigned int val;
2022         unsigned long end_time;
2023         unsigned char pval;
2024
2025 #if 0 /* broken on K7M? */
2026         if (chip->chip_type == TYPE_VIA686)
2027                 /* disable all legacy ports */
2028                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2029 #endif
2030         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2031         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2032                 /* deassert ACLink reset, force SYNC */
2033                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2034                                       VIA_ACLINK_CTRL_ENABLE |
2035                                       VIA_ACLINK_CTRL_RESET |
2036                                       VIA_ACLINK_CTRL_SYNC);
2037                 udelay(100);
2038 #if 1 /* FIXME: should we do full reset here for all chip models? */
2039                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2040                 udelay(100);
2041 #else
2042                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2043                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2044                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2045                 udelay(2);
2046 #endif
2047                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2048                 /* note - FM data out has trouble with non VRA codecs !! */
2049                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2050                 udelay(100);
2051         }
2052
2053         /* Make sure VRA is enabled, in case we didn't do a
2054          * complete codec reset, above */
2055         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2056         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2057                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2058                 /* note - FM data out has trouble with non VRA codecs !! */
2059                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2060                 udelay(100);
2061         }
2062
2063         /* wait until codec ready */
2064         end_time = jiffies + msecs_to_jiffies(750);
2065         do {
2066                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2067                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2068                         break;
2069                 schedule_timeout_uninterruptible(1);
2070         } while (time_before(jiffies, end_time));
2071
2072         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2073                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2074
2075 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2076         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2077                                  VIA_REG_AC97_SECONDARY_VALID |
2078                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2079         end_time = jiffies + msecs_to_jiffies(750);
2080         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2081                                  VIA_REG_AC97_SECONDARY_VALID |
2082                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2083         do {
2084                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2085                         chip->ac97_secondary = 1;
2086                         goto __ac97_ok2;
2087                 }
2088                 schedule_timeout_interruptible(1);
2089         } while (time_before(jiffies, end_time));
2090         /* This is ok, the most of motherboards have only one codec */
2091
2092       __ac97_ok2:
2093 #endif
2094
2095         if (chip->chip_type == TYPE_VIA686) {
2096                 /* route FM trap to IRQ, disable FM trap */
2097                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2098                 /* disable all GPI interrupts */
2099                 outl(0, VIAREG(chip, GPI_INTR));
2100         }
2101
2102         if (chip->chip_type != TYPE_VIA686) {
2103                 /* Workaround for Award BIOS bug:
2104                  * DXS channels don't work properly with VRA if MC97 is disabled.
2105                  */
2106                 struct pci_dev *pci;
2107                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2108                 if (pci) {
2109                         unsigned char data;
2110                         pci_read_config_byte(pci, 0x44, &data);
2111                         pci_write_config_byte(pci, 0x44, data | 0x40);
2112                         pci_dev_put(pci);
2113                 }
2114         }
2115
2116         if (chip->chip_type != TYPE_VIA8233A) {
2117                 int i, idx;
2118                 for (idx = 0; idx < 4; idx++) {
2119                         unsigned long port = chip->port + 0x10 * idx;
2120                         for (i = 0; i < 2; i++) {
2121                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2122                                 outb(chip->playback_volume_c[i],
2123                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2124                         }
2125                 }
2126         }
2127
2128         return 0;
2129 }
2130
2131 #ifdef CONFIG_PM
2132 /*
2133  * power management
2134  */
2135 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2136 {
2137         struct snd_card *card = pci_get_drvdata(pci);
2138         struct via82xx *chip = card->private_data;
2139         int i;
2140
2141         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2142         for (i = 0; i < 2; i++)
2143                 snd_pcm_suspend_all(chip->pcms[i]);
2144         for (i = 0; i < chip->num_devs; i++)
2145                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2146         synchronize_irq(chip->irq);
2147         snd_ac97_suspend(chip->ac97);
2148
2149         /* save misc values */
2150         if (chip->chip_type != TYPE_VIA686) {
2151                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2152                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2153                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2154         }
2155
2156         pci_set_power_state(pci, PCI_D3hot);
2157         pci_disable_device(pci);
2158         pci_save_state(pci);
2159         return 0;
2160 }
2161
2162 static int snd_via82xx_resume(struct pci_dev *pci)
2163 {
2164         struct snd_card *card = pci_get_drvdata(pci);
2165         struct via82xx *chip = card->private_data;
2166         int i;
2167
2168         pci_restore_state(pci);
2169         pci_enable_device(pci);
2170         pci_set_power_state(pci, PCI_D0);
2171
2172         snd_via82xx_chip_init(chip);
2173
2174         if (chip->chip_type == TYPE_VIA686) {
2175                 if (chip->mpu_port_saved)
2176                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2177                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2178                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2179         } else {
2180                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2181                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2182                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2183         }
2184
2185         snd_ac97_resume(chip->ac97);
2186
2187         for (i = 0; i < chip->num_devs; i++)
2188                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2189
2190         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2191         return 0;
2192 }
2193 #endif /* CONFIG_PM */
2194
2195 static int snd_via82xx_free(struct via82xx *chip)
2196 {
2197         unsigned int i;
2198
2199         if (chip->irq < 0)
2200                 goto __end_hw;
2201         /* disable interrupts */
2202         for (i = 0; i < chip->num_devs; i++)
2203                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2204         synchronize_irq(chip->irq);
2205       __end_hw:
2206         if (chip->irq >= 0)
2207                 free_irq(chip->irq, chip);
2208         release_and_free_resource(chip->mpu_res);
2209         pci_release_regions(chip->pci);
2210
2211         if (chip->chip_type == TYPE_VIA686) {
2212                 snd_via686_free_gameport(chip);
2213                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2214                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2215         }
2216         pci_disable_device(chip->pci);
2217         kfree(chip);
2218         return 0;
2219 }
2220
2221 static int snd_via82xx_dev_free(struct snd_device *device)
2222 {
2223         struct via82xx *chip = device->device_data;
2224         return snd_via82xx_free(chip);
2225 }
2226
2227 static int __devinit snd_via82xx_create(struct snd_card *card,
2228                                         struct pci_dev *pci,
2229                                         int chip_type,
2230                                         int revision,
2231                                         unsigned int ac97_clock,
2232                                         struct via82xx ** r_via)
2233 {
2234         struct via82xx *chip;
2235         int err;
2236         static struct snd_device_ops ops = {
2237                 .dev_free =     snd_via82xx_dev_free,
2238         };
2239
2240         if ((err = pci_enable_device(pci)) < 0)
2241                 return err;
2242
2243         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2244                 pci_disable_device(pci);
2245                 return -ENOMEM;
2246         }
2247
2248         chip->chip_type = chip_type;
2249         chip->revision = revision;
2250
2251         spin_lock_init(&chip->reg_lock);
2252         spin_lock_init(&chip->rates[0].lock);
2253         spin_lock_init(&chip->rates[1].lock);
2254         chip->card = card;
2255         chip->pci = pci;
2256         chip->irq = -1;
2257
2258         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2259         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2260         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2261                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2262
2263         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2264                 kfree(chip);
2265                 pci_disable_device(pci);
2266                 return err;
2267         }
2268         chip->port = pci_resource_start(pci, 0);
2269         if (request_irq(pci->irq,
2270                         chip_type == TYPE_VIA8233 ?
2271                         snd_via8233_interrupt : snd_via686_interrupt,
2272                         SA_INTERRUPT|SA_SHIRQ,
2273                         card->driver, chip)) {
2274                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2275                 snd_via82xx_free(chip);
2276                 return -EBUSY;
2277         }
2278         chip->irq = pci->irq;
2279         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2280                 chip->ac97_clock = ac97_clock;
2281         synchronize_irq(chip->irq);
2282
2283         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2284                 snd_via82xx_free(chip);
2285                 return err;
2286         }
2287
2288         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2289                 snd_via82xx_free(chip);
2290                 return err;
2291         }
2292
2293         /* The 8233 ac97 controller does not implement the master bit
2294          * in the pci command register. IMHO this is a violation of the PCI spec.
2295          * We call pci_set_master here because it does not hurt. */
2296         pci_set_master(pci);
2297
2298         snd_card_set_dev(card, &pci->dev);
2299
2300         *r_via = chip;
2301         return 0;
2302 }
2303
2304 struct via823x_info {
2305         int revision;
2306         char *name;
2307         int type;
2308 };
2309 static struct via823x_info via823x_cards[] __devinitdata = {
2310         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2311         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2312         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2313         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2314         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2315         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2316 };
2317
2318 /*
2319  * auto detection of DXS channel supports.
2320  */
2321 struct dxs_whitelist {
2322         unsigned short subvendor;
2323         unsigned short subdevice;
2324         unsigned short mask;
2325         short action;   /* new dxs_support value */
2326 };
2327
2328 static int __devinit check_dxs_list(struct pci_dev *pci)
2329 {
2330         static struct dxs_whitelist whitelist[] = {
2331                 { .subvendor = 0x1005, .subdevice = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2332                 { .subvendor = 0x1019, .subdevice = 0x0996, .action = VIA_DXS_48K },
2333                 { .subvendor = 0x1019, .subdevice = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2334                 { .subvendor = 0x1019, .subdevice = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2335                 { .subvendor = 0x1019, .subdevice = 0xa101, .action = VIA_DXS_SRC },
2336                 { .subvendor = 0x1025, .subdevice = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2337                 { .subvendor = 0x1025, .subdevice = 0x0046, .action = VIA_DXS_SRC }, /* Acer Aspire 1524 WLMi */
2338                 { .subvendor = 0x1043, .subdevice = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2339                 { .subvendor = 0x1043, .subdevice = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2340                 { .subvendor = 0x1043, .subdevice = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2341                 { .subvendor = 0x1043, .subdevice = 0x810d, .action = VIA_DXS_SRC }, /* ASUS */
2342                 { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC    }, /* ASUS A8V Deluxe */
2343                 { .subvendor = 0x1043, .subdevice = 0x8174, .action = VIA_DXS_SRC    }, /* ASUS */
2344                 { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2345                 { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */
2346                 { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2347                 { .subvendor = 0x1106, .subdevice = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2348                 { .subvendor = 0x1106, .subdevice = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2349                 { .subvendor = 0x1106, .subdevice = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2350                 { .subvendor = 0x1106, .subdevice = 0xc001, .action = VIA_DXS_SRC }, /* Insight P4-ITX */
2351                 { .subvendor = 0x1297, .subdevice = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2352                 { .subvendor = 0x1297, .subdevice = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2353                 { .subvendor = 0x1458, .subdevice = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2354                 { .subvendor = 0x1462, .subdevice = 0x0080, .action = VIA_DXS_SRC }, /* MSI K8T Neo-FIS2R */
2355                 { .subvendor = 0x1462, .subdevice = 0x0430, .action = VIA_DXS_SRC }, /* MSI 7142 (K8MM-V) */
2356                 { .subvendor = 0x1462, .subdevice = 0x0470, .action = VIA_DXS_SRC }, /* MSI KT880 Delta-FSR */
2357                 { .subvendor = 0x1462, .subdevice = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2358                 { .subvendor = 0x1462, .subdevice = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2359                 { .subvendor = 0x1462, .subdevice = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2360                 { .subvendor = 0x1462, .subdevice = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2361                 { .subvendor = 0x1462, .subdevice = 0x7142, .action = VIA_DXS_ENABLE }, /* MSI K8MM-V */
2362                 { .subvendor = 0x1462, .subdevice = 0xb012, .action = VIA_DXS_SRC }, /* P4M800/VIA8237R */
2363                 { .subvendor = 0x147b, .subdevice = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2364                 { .subvendor = 0x147b, .subdevice = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2365                 { .subvendor = 0x147b, .subdevice = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2366                 { .subvendor = 0x147b, .subdevice = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2367                 { .subvendor = 0x14ff, .subdevice = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2368                 { .subvendor = 0x14ff, .subdevice = 0x0408, .action = VIA_DXS_SRC }, /* Twinhead laptop */
2369                 { .subvendor = 0x1558, .subdevice = 0x4701, .action = VIA_DXS_SRC }, /* Clevo D470 */
2370                 { .subvendor = 0x1584, .subdevice = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2371                 { .subvendor = 0x1584, .subdevice = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2372                 { .subvendor = 0x161f, .subdevice = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2373                 { .subvendor = 0x161f, .subdevice = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2374                 { .subvendor = 0x1631, .subdevice = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2375                 { .subvendor = 0x1695, .subdevice = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2376                 { .subvendor = 0x1695, .subdevice = 0x300e, .action = VIA_DXS_SRC }, /* EPoX 9HEAI */
2377                 { .subvendor = 0x16f3, .subdevice = 0x6405, .action = VIA_DXS_SRC }, /* Jetway K8M8MS */
2378                 { .subvendor = 0x1734, .subdevice = 0x1093, .action = VIA_DXS_SRC }, /* FSC */
2379                 { .subvendor = 0x1849, .subdevice = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2380                 { .subvendor = 0x1849, .subdevice = 0x9761, .action = VIA_DXS_SRC }, /* ASRock mobo(?) */
2381                 { .subvendor = 0x1919, .subdevice = 0x200a, .action = VIA_DXS_NO_VRA }, /* Soltek SL-K8Tpro-939 */
2382                 { .subvendor = 0x4005, .subdevice = 0x4710, .action = VIA_DXS_SRC },    /* MSI K7T266 Pro2 (MS-6380 V2.0) BIOS 3.7 */
2383                 { } /* terminator */
2384         };
2385         struct dxs_whitelist *w;
2386         unsigned short subsystem_vendor;
2387         unsigned short subsystem_device;
2388
2389         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2390         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2391
2392         for (w = whitelist; w->subvendor; w++) {
2393                 if (w->subvendor != subsystem_vendor)
2394                         continue;
2395                 if (w->mask) {
2396                         if ((w->mask & subsystem_device) == w->subdevice)
2397                                 return w->action;
2398                 } else {
2399                         if (subsystem_device == w->subdevice)
2400                                 return w->action;
2401                 }
2402         }
2403
2404         /*
2405          * not detected, try 48k rate only to be sure.
2406          */
2407         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2408         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2409         printk(KERN_INFO "         and report if it works on your machine.\n");
2410         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2411         return VIA_DXS_48K;
2412 };
2413
2414 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2415                                        const struct pci_device_id *pci_id)
2416 {
2417         struct snd_card *card;
2418         struct via82xx *chip;
2419         unsigned char revision;
2420         int chip_type = 0, card_type;
2421         unsigned int i;
2422         int err;
2423
2424         card = snd_card_new(index, id, THIS_MODULE, 0);
2425         if (card == NULL)
2426                 return -ENOMEM;
2427
2428         card_type = pci_id->driver_data;
2429         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2430         switch (card_type) {
2431         case TYPE_CARD_VIA686:
2432                 strcpy(card->driver, "VIA686A");
2433                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2434                 chip_type = TYPE_VIA686;
2435                 break;
2436         case TYPE_CARD_VIA8233:
2437                 chip_type = TYPE_VIA8233;
2438                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2439                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2440                         if (revision == via823x_cards[i].revision) {
2441                                 chip_type = via823x_cards[i].type;
2442                                 strcpy(card->shortname, via823x_cards[i].name);
2443                                 break;
2444                         }
2445                 }
2446                 if (chip_type != TYPE_VIA8233A) {
2447                         if (dxs_support == VIA_DXS_AUTO)
2448                                 dxs_support = check_dxs_list(pci);
2449                         /* force to use VIA8233 or 8233A model according to
2450                          * dxs_support module option
2451                          */
2452                         if (dxs_support == VIA_DXS_DISABLE)
2453                                 chip_type = TYPE_VIA8233A;
2454                         else
2455                                 chip_type = TYPE_VIA8233;
2456                 }
2457                 if (chip_type == TYPE_VIA8233A)
2458                         strcpy(card->driver, "VIA8233A");
2459                 else if (revision >= VIA_REV_8237)
2460                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2461                 else
2462                         strcpy(card->driver, "VIA8233");
2463                 break;
2464         default:
2465                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2466                 err = -EINVAL;
2467                 goto __error;
2468         }
2469
2470         if ((err = snd_via82xx_create(card, pci, chip_type, revision,
2471                                       ac97_clock, &chip)) < 0)
2472                 goto __error;
2473         card->private_data = chip;
2474         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2475                 goto __error;
2476
2477         if (chip_type == TYPE_VIA686) {
2478                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2479                     (err = snd_via686_init_misc(chip)) < 0)
2480                         goto __error;
2481         } else {
2482                 if (chip_type == TYPE_VIA8233A) {
2483                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2484                                 goto __error;
2485                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2486                 } else {
2487                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2488                                 goto __error;
2489                         if (dxs_support == VIA_DXS_48K)
2490                                 chip->dxs_fixed = 1;
2491                         else if (dxs_support == VIA_DXS_NO_VRA)
2492                                 chip->no_vra = 1;
2493                         else if (dxs_support == VIA_DXS_SRC) {
2494                                 chip->no_vra = 1;
2495                                 chip->dxs_src = 1;
2496                         }
2497                 }
2498                 if ((err = snd_via8233_init_misc(chip)) < 0)
2499                         goto __error;
2500         }
2501
2502         /* disable interrupts */
2503         for (i = 0; i < chip->num_devs; i++)
2504                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2505
2506         snprintf(card->longname, sizeof(card->longname),
2507                  "%s with %s at %#lx, irq %d", card->shortname,
2508                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2509
2510         snd_via82xx_proc_init(chip);
2511
2512         if ((err = snd_card_register(card)) < 0) {
2513                 snd_card_free(card);
2514                 return err;
2515         }
2516         pci_set_drvdata(pci, card);
2517         return 0;
2518
2519  __error:
2520         snd_card_free(card);
2521         return err;
2522 }
2523
2524 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2525 {
2526         snd_card_free(pci_get_drvdata(pci));
2527         pci_set_drvdata(pci, NULL);
2528 }
2529
2530 static struct pci_driver driver = {
2531         .name = "VIA 82xx Audio",
2532         .id_table = snd_via82xx_ids,
2533         .probe = snd_via82xx_probe,
2534         .remove = __devexit_p(snd_via82xx_remove),
2535 #ifdef CONFIG_PM
2536         .suspend = snd_via82xx_suspend,
2537         .resume = snd_via82xx_resume,
2538 #endif
2539 };
2540
2541 static int __init alsa_card_via82xx_init(void)
2542 {
2543         return pci_register_driver(&driver);
2544 }
2545
2546 static void __exit alsa_card_via82xx_exit(void)
2547 {
2548         pci_unregister_driver(&driver);
2549 }
2550
2551 module_init(alsa_card_via82xx_init)
2552 module_exit(alsa_card_via82xx_exit)