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  */
 307
 308 typedef struct _snd_via82xx via82xx_t;
 309 typedef struct via_dev viadev_t;
 310
 311 /*
 312  * pcm stream
 313  */
 314
 315 struct snd_via_sg_table {
 316         unsigned int offset;
 317         unsigned int size;
 318 } ;
 319
 320 #define VIA_TABLE_SIZE  255
 321
 322 struct via_dev {
 323         unsigned int reg_offset;
 324         unsigned long port;
 325         int direction;  /* playback = 0, capture = 1 */
 326         snd_pcm_substream_t *substream;
 327         int running;
 328         unsigned int tbl_entries; /* # descriptors */
 329         struct snd_dma_buffer table;
 330         struct snd_via_sg_table *idx_table;
 331         /* for recovery from the unexpected pointer */
 332         unsigned int lastpos;
 333         unsigned int fragsize;
 334         unsigned int bufsize;
 335         unsigned int bufsize2;
 336         int hwptr_done;         /* processed frame position in the buffer */
 337         int in_interrupt;
 338         int shadow_shift;
 339 };
 340
 341
 342 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 343 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 344
 345 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 346
 347 struct via_rate_lock {
 348         spinlock_t lock;
 349         int rate;
 350         int used;
 351 };
 352
 353 struct _snd_via82xx {
 354         int irq;
 355
 356         unsigned long port;
 357         struct resource *mpu_res;
 358         int chip_type;
 359         unsigned char revision;
 360
 361         unsigned char old_legacy;
 362         unsigned char old_legacy_cfg;
 363 #ifdef CONFIG_PM
 364         unsigned char legacy_saved;
 365         unsigned char legacy_cfg_saved;
 366         unsigned char spdif_ctrl_saved;
 367         unsigned char capture_src_saved[2];
 368         unsigned int mpu_port_saved;
 369 #endif
 370
 371         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 372         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 373
 374         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 375
 376         struct pci_dev *pci;
 377         snd_card_t *card;
 378
 379         unsigned int num_devs;
 380         unsigned int playback_devno, multi_devno, capture_devno;
 381         viadev_t devs[VIA_MAX_DEVS];
 382         struct via_rate_lock rates[2]; /* playback and capture */
 383         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 384         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 385         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 386         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 387
 388         snd_pcm_t *pcms[2];
 389         snd_rawmidi_t *rmidi;
 390
 391         ac97_bus_t *ac97_bus;
 392         ac97_t *ac97;
 393         unsigned int ac97_clock;
 394         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 395
 396         spinlock_t reg_lock;
 397         snd_info_entry_t *proc_entry;
 398
 399 #ifdef SUPPORT_JOYSTICK
 400         struct gameport *gameport;
 401 #endif
 402 };
 403
 404 static struct pci_device_id snd_via82xx_ids[] = {
 405         /* 0x1106, 0x3058 */
 406         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
 407         /* 0x1106, 0x3059 */
 408         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
 409         { 0, }
 410 };
 411
 412 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 413
 414 /*
 415  */
 416
 417 /*
 418  * allocate and initialize the descriptor buffers
 419  * periods = number of periods
 420  * fragsize = period size in bytes
 421  */
 422 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 423                            struct pci_dev *pci,
 424                            unsigned int periods, unsigned int fragsize)
 425 {
 426         unsigned int i, idx, ofs, rest;
 427         via82xx_t *chip = snd_pcm_substream_chip(substream);
 428         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 429
 430         if (dev->table.area == NULL) {
 431                 /* the start of each lists must be aligned to 8 bytes,
 432                  * but the kernel pages are much bigger, so we don't care
 433                  */
 434                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 435                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 436                                         &dev->table) < 0)
 437                         return -ENOMEM;
 438         }
 439         if (! dev->idx_table) {
 440                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 441                 if (! dev->idx_table)
 442                         return -ENOMEM;
 443         }
 444
 445         /* fill the entries */
 446         idx = 0;
 447         ofs = 0;
 448         for (i = 0; i < periods; i++) {
 449                 rest = fragsize;
 450                 /* fill descriptors for a period.
 451                  * a period can be split to several descriptors if it's
 452                  * over page boundary.
 453                  */
 454                 do {
 455                         unsigned int r;
 456                         unsigned int flag;
 457
 458                         if (idx >= VIA_TABLE_SIZE) {
 459                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 460                                 return -EINVAL;
 461                         }
 462                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 463                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 464                         if (rest < r)
 465                                 r = rest;
 466                         rest -= r;
 467                         if (! rest) {
 468                                 if (i == periods - 1)
 469                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 470                                 else
 471                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 472                         } else
 473                                 flag = 0; /* period continues to the next */
 474                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 475                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 476                         dev->idx_table[idx].offset = ofs;
 477                         dev->idx_table[idx].size = r;
 478                         ofs += r;
 479                         idx++;
 480                 } while (rest > 0);
 481         }
 482         dev->tbl_entries = idx;
 483         dev->bufsize = periods * fragsize;
 484         dev->bufsize2 = dev->bufsize / 2;
 485         dev->fragsize = fragsize;
 486         return 0;
 487 }
 488
 489
 490 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 491                            struct pci_dev *pci)
 492 {
 493         if (dev->table.area) {
 494                 snd_dma_free_pages(&dev->table);
 495                 dev->table.area = NULL;
 496         }
 497         kfree(dev->idx_table);
 498         dev->idx_table = NULL;
 499         return 0;
 500 }
 501
 502 /*
 503  *  Basic I/O
 504  */
 505
 506 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
 507 {
 508         return inl(VIAREG(chip, AC97));
 509 }
 510
 511 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
 512 {
 513         outl(val, VIAREG(chip, AC97));
 514 }
 515
 516 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
 517 {
 518         unsigned int timeout = 1000;    /* 1ms */
 519         unsigned int val;
 520
 521         while (timeout-- > 0) {
 522                 udelay(1);
 523                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 524                         return val & 0xffff;
 525         }
 526         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
 527         return -EIO;
 528 }
 529
 530 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
 531 {
 532         unsigned int timeout = 1000;    /* 1ms */
 533         unsigned int val, val1;
 534         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 535                                          VIA_REG_AC97_SECONDARY_VALID;
 536
 537         while (timeout-- > 0) {
 538                 val = snd_via82xx_codec_xread(chip);
 539                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 540                 if (val1 == stat)
 541                         return val & 0xffff;
 542                 udelay(1);
 543         }
 544         return -EIO;
 545 }
 546
 547 static void snd_via82xx_codec_wait(ac97_t *ac97)
 548 {
 549         via82xx_t *chip = ac97->private_data;
 550         int err;
 551         err = snd_via82xx_codec_ready(chip, ac97->num);
 552         /* here we need to wait fairly for long time.. */
 553         msleep(500);
 554 }
 555
 556 static void snd_via82xx_codec_write(ac97_t *ac97,
 557                                     unsigned short reg,
 558                                     unsigned short val)
 559 {
 560         via82xx_t *chip = ac97->private_data;
 561         unsigned int xval;
 562
 563         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 564         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 565         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 566         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 567         snd_via82xx_codec_xwrite(chip, xval);
 568         snd_via82xx_codec_ready(chip, ac97->num);
 569 }
 570
 571 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 572 {
 573         via82xx_t *chip = ac97->private_data;
 574         unsigned int xval, val = 0xffff;
 575         int again = 0;
 576
 577         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 578         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 579         xval |= VIA_REG_AC97_READ;
 580         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 581         while (1) {
 582                 if (again++ > 3) {
 583                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 584                         return 0xffff;
 585                 }
 586                 snd_via82xx_codec_xwrite(chip, xval);
 587                 udelay (20);
 588                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 589                         udelay(25);
 590                         val = snd_via82xx_codec_xread(chip);
 591                         break;
 592                 }
 593         }
 594         return val & 0xffff;
 595 }
 596
 597 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 598 {
 599         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 600              VIADEV_REG(viadev, OFFSET_CONTROL));
 601         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 602         udelay(50);
 603         /* disable interrupts */
 604         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 605         /* clear interrupts */
 606         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 607         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 608         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 609         viadev->lastpos = 0;
 610         viadev->hwptr_done = 0;
 611 }
 612
 613
 614 /*
 615  *  Interrupt handler
 616  *  Used for 686 and 8233A
 617  */
 618 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 619 {
 620         via82xx_t *chip = dev_id;
 621         unsigned int status;
 622         unsigned int i;
 623
 624         status = inl(VIAREG(chip, SGD_SHADOW));
 625         if (! (status & chip->intr_mask)) {
 626                 if (chip->rmidi)
 627                         /* check mpu401 interrupt */
 628                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 629                 return IRQ_NONE;
 630         }
 631
 632         /* check status for each stream */
 633         spin_lock(&chip->reg_lock);
 634         for (i = 0; i < chip->num_devs; i++) {
 635                 viadev_t *viadev = &chip->devs[i];
 636                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 637                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 638                         continue;
 639                 if (viadev->substream && viadev->running) {
 640                         /*
 641                          * Update hwptr_done based on 'period elapsed'
 642                          * interrupts. We'll use it, when the chip returns 0
 643                          * for OFFSET_CURR_COUNT.
 644                          */
 645                         if (c_status & VIA_REG_STAT_EOL)
 646                                 viadev->hwptr_done = 0;
 647                         else
 648                                 viadev->hwptr_done += viadev->fragsize;
 649                         viadev->in_interrupt = c_status;
 650                         spin_unlock(&chip->reg_lock);
 651                         snd_pcm_period_elapsed(viadev->substream);
 652                         spin_lock(&chip->reg_lock);
 653                         viadev->in_interrupt = 0;
 654                 }
 655                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 656         }
 657         spin_unlock(&chip->reg_lock);
 658         return IRQ_HANDLED;
 659 }
 660
 661 /*
 662  *  Interrupt handler
 663  */
 664 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 665 {
 666         via82xx_t *chip = dev_id;
 667         unsigned int status;
 668         unsigned int i;
 669         int irqreturn = 0;
 670
 671         /* check status for each stream */
 672         spin_lock(&chip->reg_lock);
 673         status = inl(VIAREG(chip, SGD_SHADOW));
 674
 675         for (i = 0; i < chip->num_devs; i++) {
 676                 viadev_t *viadev = &chip->devs[i];
 677                 snd_pcm_substream_t *substream;
 678                 unsigned char c_status, shadow_status;
 679
 680                 shadow_status = (status >> viadev->shadow_shift) &
 681                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 682                          VIA_REG_STAT_FLAG);
 683                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 684                 if (!c_status)
 685                         continue;
 686
 687                 substream = viadev->substream;
 688                 if (substream && viadev->running) {
 689                         /*
 690                          * Update hwptr_done based on 'period elapsed'
 691                          * interrupts. We'll use it, when the chip returns 0
 692                          * for OFFSET_CURR_COUNT.
 693                          */
 694                         if (c_status & VIA_REG_STAT_EOL)
 695                                 viadev->hwptr_done = 0;
 696                         else
 697                                 viadev->hwptr_done += viadev->fragsize;
 698                         viadev->in_interrupt = c_status;
 699                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 700                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 701                         spin_unlock(&chip->reg_lock);
 702
 703                         snd_pcm_period_elapsed(substream);
 704
 705                         spin_lock(&chip->reg_lock);
 706                         viadev->in_interrupt = 0;
 707                 }
 708                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 709                 irqreturn = 1;
 710         }
 711         spin_unlock(&chip->reg_lock);
 712         return IRQ_RETVAL(irqreturn);
 713 }
 714
 715 /*
 716  *  PCM callbacks
 717  */
 718
 719 /*
 720  * trigger callback
 721  */
 722 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 723 {
 724         via82xx_t *chip = snd_pcm_substream_chip(substream);
 725         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 726         unsigned char val;
 727
 728         if (chip->chip_type != TYPE_VIA686)
 729                 val = VIA_REG_CTRL_INT;
 730         else
 731                 val = 0;
 732         switch (cmd) {
 733         case SNDRV_PCM_TRIGGER_START:
 734         case SNDRV_PCM_TRIGGER_RESUME:
 735                 val |= VIA_REG_CTRL_START;
 736                 viadev->running = 1;
 737                 break;
 738         case SNDRV_PCM_TRIGGER_STOP:
 739         case SNDRV_PCM_TRIGGER_SUSPEND:
 740                 val = VIA_REG_CTRL_TERMINATE;
 741                 viadev->running = 0;
 742                 break;
 743         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 744                 val |= VIA_REG_CTRL_PAUSE;
 745                 viadev->running = 0;
 746                 break;
 747         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 748                 viadev->running = 1;
 749                 break;
 750         default:
 751                 return -EINVAL;
 752         }
 753         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 754         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 755                 snd_via82xx_channel_reset(chip, viadev);
 756         return 0;
 757 }
 758
 759
 760 /*
 761  * pointer callbacks
 762  */
 763
 764 /*
 765  * calculate the linear position at the given sg-buffer index and the rest count
 766  */
 767
 768 #define check_invalid_pos(viadev,pos) \
 769         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 770
 771 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 772 {
 773         unsigned int size, base, res;
 774
 775         size = viadev->idx_table[idx].size;
 776         base = viadev->idx_table[idx].offset;
 777         res = base + size - count;
 778         if (res >= viadev->bufsize)
 779                 res -= viadev->bufsize;
 780
 781         /* check the validity of the calculated position */
 782         if (size < count) {
 783                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 784                 res = viadev->lastpos;
 785         } else {
 786                 if (! count) {
 787                         /* Some mobos report count = 0 on the DMA boundary,
 788                          * i.e. count = size indeed.
 789                          * Let's check whether this step is above the expected size.
 790                          */
 791                         int delta = res - viadev->lastpos;
 792                         if (delta < 0)
 793                                 delta += viadev->bufsize;
 794                         if ((unsigned int)delta > viadev->fragsize)
 795                                 res = base;
 796                 }
 797                 if (check_invalid_pos(viadev, res)) {
 798 #ifdef POINTER_DEBUG
 799                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count);
 800 #endif
 801                         /* count register returns full size when end of buffer is reached */
 802                         res = base + size;
 803                         if (check_invalid_pos(viadev, res)) {
 804                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 805                                 res = viadev->lastpos;
 806                         }
 807                 }
 808         }
 809         return res;
 810 }
 811
 812 /*
 813  * get the current pointer on via686
 814  */
 815 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 816 {
 817         via82xx_t *chip = snd_pcm_substream_chip(substream);
 818         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 819         unsigned int idx, ptr, count, res;
 820
 821         snd_assert(viadev->tbl_entries, return 0);
 822         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 823                 return 0;
 824
 825         spin_lock(&chip->reg_lock);
 826         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 827         /* The via686a does not have the current index register,
 828          * so we need to calculate the index from CURR_PTR.
 829          */
 830         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 831         if (ptr <= (unsigned int)viadev->table.addr)
 832                 idx = 0;
 833         else /* CURR_PTR holds the address + 8 */
 834                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 835         res = calc_linear_pos(viadev, idx, count);
 836         viadev->lastpos = res; /* remember the last position */
 837         spin_unlock(&chip->reg_lock);
 838
 839         return bytes_to_frames(substream->runtime, res);
 840 }
 841
 842 /*
 843  * get the current pointer on via823x
 844  */
 845 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 846 {
 847         via82xx_t *chip = snd_pcm_substream_chip(substream);
 848         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 849         unsigned int idx, count, res;
 850         int status;
 851
 852         snd_assert(viadev->tbl_entries, return 0);
 853
 854         spin_lock(&chip->reg_lock);
 855         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 856         status = viadev->in_interrupt;
 857         if (!status)
 858                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 859
 860         if (!(status & VIA_REG_STAT_ACTIVE)) {
 861                 res = 0;
 862                 goto unlock;
 863         }
 864         if (count & 0xffffff) {
 865                 idx = count >> 24;
 866                 if (idx >= viadev->tbl_entries) {
 867 #ifdef POINTER_DEBUG
 868                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 869 #endif
 870                         res = viadev->lastpos;
 871                 } else {
 872                         count &= 0xffffff;
 873                         res = calc_linear_pos(viadev, idx, count);
 874                 }
 875         } else {
 876                 res = viadev->hwptr_done;
 877                 if (!viadev->in_interrupt) {
 878                         if (status & VIA_REG_STAT_EOL) {
 879                                 res = 0;
 880                         } else
 881                                 if (status & VIA_REG_STAT_FLAG) {
 882                                         res += viadev->fragsize;
 883                                 }
 884                 }
 885         }
 886 unlock:
 887         viadev->lastpos = res;
 888         spin_unlock(&chip->reg_lock);
 889
 890         return bytes_to_frames(substream->runtime, res);
 891 }
 892
 893
 894 /*
 895  * hw_params callback:
 896  * allocate the buffer and build up the buffer description table
 897  */
 898 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 899                                  snd_pcm_hw_params_t * hw_params)
 900 {
 901         via82xx_t *chip = snd_pcm_substream_chip(substream);
 902         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 903         int err;
 904
 905         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 906         if (err < 0)
 907                 return err;
 908         err = build_via_table(viadev, substream, chip->pci,
 909                               params_periods(hw_params),
 910                               params_period_bytes(hw_params));
 911         if (err < 0)
 912                 return err;
 913
 914         return 0;
 915 }
 916
 917 /*
 918  * hw_free callback:
 919  * clean up the buffer description table and release the buffer
 920  */
 921 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 922 {
 923         via82xx_t *chip = snd_pcm_substream_chip(substream);
 924         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 925
 926         clean_via_table(viadev, substream, chip->pci);
 927         snd_pcm_lib_free_pages(substream);
 928         return 0;
 929 }
 930
 931
 932 /*
 933  * set up the table pointer
 934  */
 935 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 936 {
 937         snd_via82xx_codec_ready(chip, 0);
 938         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 939         udelay(20);
 940         snd_via82xx_codec_ready(chip, 0);
 941 }
 942
 943 /*
 944  * prepare callback for playback and capture on via686
 945  */
 946 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 947 {
 948         snd_via82xx_channel_reset(chip, viadev);
 949         /* this must be set after channel_reset */
 950         snd_via82xx_set_table_ptr(chip, viadev);
 951         outb(VIA_REG_TYPE_AUTOSTART |
 952              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 953              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 954              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 955              VIA_REG_TYPE_INT_EOL |
 956              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 957 }
 958
 959 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 960 {
 961         via82xx_t *chip = snd_pcm_substream_chip(substream);
 962         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 963         snd_pcm_runtime_t *runtime = substream->runtime;
 964
 965         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 966         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 967         via686_setup_format(chip, viadev, runtime);
 968         return 0;
 969 }
 970
 971 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 972 {
 973         via82xx_t *chip = snd_pcm_substream_chip(substream);
 974         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 975         snd_pcm_runtime_t *runtime = substream->runtime;
 976
 977         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 978         via686_setup_format(chip, viadev, runtime);
 979         return 0;
 980 }
 981
 982 /*
 983  * lock the current rate
 984  */
 985 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 986 {
 987         int changed = 0;
 988
 989         spin_lock_irq(&rec->lock);
 990         if (rec->rate != rate) {
 991                 if (rec->rate && rec->used > 1) /* already set */
 992                         changed = -EINVAL;
 993                 else {
 994                         rec->rate = rate;
 995                         changed = 1;
 996                 }
 997         }
 998         spin_unlock_irq(&rec->lock);
 999         return changed;
1000 }
1001
1002 /*
1003  * prepare callback for DSX playback on via823x
1004  */
1005 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
1006 {
1007         via82xx_t *chip = snd_pcm_substream_chip(substream);
1008         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1009         snd_pcm_runtime_t *runtime = substream->runtime;
1010         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1011         int rate_changed;
1012         u32 rbits;
1013
1014         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1015                 return rate_changed;
1016         if (rate_changed)
1017                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1018                                   chip->no_vra ? 48000 : runtime->rate);
1019         if (chip->spdif_on && viadev->reg_offset == 0x30)
1020                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1021
1022         if (runtime->rate == 48000)
1023                 rbits = 0xfffff;
1024         else
1025                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
1026         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
1027         snd_via82xx_channel_reset(chip, viadev);
1028         snd_via82xx_set_table_ptr(chip, viadev);
1029         outb(chip->playback_volume[viadev->reg_offset / 0x10][0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1030         outb(chip->playback_volume[viadev->reg_offset / 0x10][1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1031         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1032              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1033              rbits | /* rate */
1034              0xff000000,    /* STOP index is never reached */
1035              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1036         udelay(20);
1037         snd_via82xx_codec_ready(chip, 0);
1038         return 0;
1039 }
1040
1041 /*
1042  * prepare callback for multi-channel playback on via823x
1043  */
1044 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
1045 {
1046         via82xx_t *chip = snd_pcm_substream_chip(substream);
1047         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1048         snd_pcm_runtime_t *runtime = substream->runtime;
1049         unsigned int slots;
1050         int fmt;
1051
1052         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1053                 return -EINVAL;
1054         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1055         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1056         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1057         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1058         snd_via82xx_channel_reset(chip, viadev);
1059         snd_via82xx_set_table_ptr(chip, viadev);
1060
1061         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1062         fmt |= runtime->channels << 4;
1063         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1064 #if 0
1065         if (chip->revision == VIA_REV_8233A)
1066                 slots = 0;
1067         else
1068 #endif
1069         {
1070                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1071                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1072                 switch (runtime->channels) {
1073                 case 1: slots = (1<<0) | (1<<4); break;
1074                 case 2: slots = (1<<0) | (2<<4); break;
1075                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1076                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1077                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1078                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1079                 default: slots = 0; break;
1080                 }
1081         }
1082         /* STOP index is never reached */
1083         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1084         udelay(20);
1085         snd_via82xx_codec_ready(chip, 0);
1086         return 0;
1087 }
1088
1089 /*
1090  * prepare callback for capture on via823x
1091  */
1092 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1093 {
1094         via82xx_t *chip = snd_pcm_substream_chip(substream);
1095         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1096         snd_pcm_runtime_t *runtime = substream->runtime;
1097
1098         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1099                 return -EINVAL;
1100         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1101         snd_via82xx_channel_reset(chip, viadev);
1102         snd_via82xx_set_table_ptr(chip, viadev);
1103         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1104         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1105              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1106              0xff000000,    /* STOP index is never reached */
1107              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1108         udelay(20);
1109         snd_via82xx_codec_ready(chip, 0);
1110         return 0;
1111 }
1112
1113
1114 /*
1115  * pcm hardware definition, identical for both playback and capture
1116  */
1117 static snd_pcm_hardware_t snd_via82xx_hw =
1118 {
1119         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1120                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1121                                  SNDRV_PCM_INFO_MMAP_VALID |
1122                                  /* SNDRV_PCM_INFO_RESUME | */
1123                                  SNDRV_PCM_INFO_PAUSE),
1124         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1125         .rates =                SNDRV_PCM_RATE_48000,
1126         .rate_min =             48000,
1127         .rate_max =             48000,
1128         .channels_min =         1,
1129         .channels_max =         2,
1130         .buffer_bytes_max =     128 * 1024,
1131         .period_bytes_min =     32,
1132         .period_bytes_max =     128 * 1024,
1133         .periods_min =          2,
1134         .periods_max =          VIA_TABLE_SIZE / 2,
1135         .fifo_size =            0,
1136 };
1137
1138
1139 /*
1140  * open callback skeleton
1141  */
1142 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1143 {
1144         snd_pcm_runtime_t *runtime = substream->runtime;
1145         int err;
1146         struct via_rate_lock *ratep;
1147
1148         runtime->hw = snd_via82xx_hw;
1149
1150         /* set the hw rate condition */
1151         ratep = &chip->rates[viadev->direction];
1152         spin_lock_irq(&ratep->lock);
1153         ratep->used++;
1154         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1155                 /* DXS#3 and spdif is on */
1156                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1157                 snd_pcm_limit_hw_rates(runtime);
1158         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1159                 /* fixed DXS playback rate */
1160                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1161                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1162         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1163                 /* use full SRC capabilities of DXS */
1164                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1165                                      SNDRV_PCM_RATE_8000_48000);
1166                 runtime->hw.rate_min = 8000;
1167                 runtime->hw.rate_max = 48000;
1168         } else if (! ratep->rate) {
1169                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1170                 runtime->hw.rates = chip->ac97->rates[idx];
1171                 snd_pcm_limit_hw_rates(runtime);
1172         } else {
1173                 /* a fixed rate */
1174                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1175                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1176         }
1177         spin_unlock_irq(&ratep->lock);
1178
1179         /* we may remove following constaint when we modify table entries
1180            in interrupt */
1181         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1182                 return err;
1183
1184         runtime->private_data = viadev;
1185         viadev->substream = substream;
1186
1187         return 0;
1188 }
1189
1190
1191 /*
1192  * open callback for playback on via686 and via823x DSX
1193  */
1194 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1195 {
1196         via82xx_t *chip = snd_pcm_substream_chip(substream);
1197         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1198         int err;
1199
1200         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1201                 return err;
1202         return 0;
1203 }
1204
1205 /*
1206  * open callback for playback on via823x multi-channel
1207  */
1208 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1209 {
1210         via82xx_t *chip = snd_pcm_substream_chip(substream);
1211         viadev_t *viadev = &chip->devs[chip->multi_devno];
1212         int err;
1213         /* channels constraint for VIA8233A
1214          * 3 and 5 channels are not supported
1215          */
1216         static unsigned int channels[] = {
1217                 1, 2, 4, 6
1218         };
1219         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1220                 .count = ARRAY_SIZE(channels),
1221                 .list = channels,
1222                 .mask = 0,
1223         };
1224
1225         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1226                 return err;
1227         substream->runtime->hw.channels_max = 6;
1228         if (chip->revision == VIA_REV_8233A)
1229                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1230         return 0;
1231 }
1232
1233 /*
1234  * open callback for capture on via686 and via823x
1235  */
1236 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1237 {
1238         via82xx_t *chip = snd_pcm_substream_chip(substream);
1239         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1240
1241         return snd_via82xx_pcm_open(chip, viadev, substream);
1242 }
1243
1244 /*
1245  * close callback
1246  */
1247 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1248 {
1249         via82xx_t *chip = snd_pcm_substream_chip(substream);
1250         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1251         struct via_rate_lock *ratep;
1252
1253         /* release the rate lock */
1254         ratep = &chip->rates[viadev->direction];
1255         spin_lock_irq(&ratep->lock);
1256         ratep->used--;
1257         if (! ratep->used)
1258                 ratep->rate = 0;
1259         spin_unlock_irq(&ratep->lock);
1260
1261         viadev->substream = NULL;
1262         return 0;
1263 }
1264
1265
1266 /* via686 playback callbacks */
1267 static snd_pcm_ops_t snd_via686_playback_ops = {
1268         .open =         snd_via82xx_playback_open,
1269         .close =        snd_via82xx_pcm_close,
1270         .ioctl =        snd_pcm_lib_ioctl,
1271         .hw_params =    snd_via82xx_hw_params,
1272         .hw_free =      snd_via82xx_hw_free,
1273         .prepare =      snd_via686_playback_prepare,
1274         .trigger =      snd_via82xx_pcm_trigger,
1275         .pointer =      snd_via686_pcm_pointer,
1276         .page =         snd_pcm_sgbuf_ops_page,
1277 };
1278
1279 /* via686 capture callbacks */
1280 static snd_pcm_ops_t snd_via686_capture_ops = {
1281         .open =         snd_via82xx_capture_open,
1282         .close =        snd_via82xx_pcm_close,
1283         .ioctl =        snd_pcm_lib_ioctl,
1284         .hw_params =    snd_via82xx_hw_params,
1285         .hw_free =      snd_via82xx_hw_free,
1286         .prepare =      snd_via686_capture_prepare,
1287         .trigger =      snd_via82xx_pcm_trigger,
1288         .pointer =      snd_via686_pcm_pointer,
1289         .page =         snd_pcm_sgbuf_ops_page,
1290 };
1291
1292 /* via823x DSX playback callbacks */
1293 static snd_pcm_ops_t snd_via8233_playback_ops = {
1294         .open =         snd_via82xx_playback_open,
1295         .close =        snd_via82xx_pcm_close,
1296         .ioctl =        snd_pcm_lib_ioctl,
1297         .hw_params =    snd_via82xx_hw_params,
1298         .hw_free =      snd_via82xx_hw_free,
1299         .prepare =      snd_via8233_playback_prepare,
1300         .trigger =      snd_via82xx_pcm_trigger,
1301         .pointer =      snd_via8233_pcm_pointer,
1302         .page =         snd_pcm_sgbuf_ops_page,
1303 };
1304
1305 /* via823x multi-channel playback callbacks */
1306 static snd_pcm_ops_t snd_via8233_multi_ops = {
1307         .open =         snd_via8233_multi_open,
1308         .close =        snd_via82xx_pcm_close,
1309         .ioctl =        snd_pcm_lib_ioctl,
1310         .hw_params =    snd_via82xx_hw_params,
1311         .hw_free =      snd_via82xx_hw_free,
1312         .prepare =      snd_via8233_multi_prepare,
1313         .trigger =      snd_via82xx_pcm_trigger,
1314         .pointer =      snd_via8233_pcm_pointer,
1315         .page =         snd_pcm_sgbuf_ops_page,
1316 };
1317
1318 /* via823x capture callbacks */
1319 static snd_pcm_ops_t snd_via8233_capture_ops = {
1320         .open =         snd_via82xx_capture_open,
1321         .close =        snd_via82xx_pcm_close,
1322         .ioctl =        snd_pcm_lib_ioctl,
1323         .hw_params =    snd_via82xx_hw_params,
1324         .hw_free =      snd_via82xx_hw_free,
1325         .prepare =      snd_via8233_capture_prepare,
1326         .trigger =      snd_via82xx_pcm_trigger,
1327         .pointer =      snd_via8233_pcm_pointer,
1328         .page =         snd_pcm_sgbuf_ops_page,
1329 };
1330
1331
1332 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int shadow_pos, int direction)
1333 {
1334         chip->devs[idx].reg_offset = reg_offset;
1335         chip->devs[idx].shadow_shift = shadow_pos * 4;
1336         chip->devs[idx].direction = direction;
1337         chip->devs[idx].port = chip->port + reg_offset;
1338 }
1339
1340 /*
1341  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1342  */
1343 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1344 {
1345         snd_pcm_t *pcm;
1346         int i, err;
1347
1348         chip->playback_devno = 0;       /* x 4 */
1349         chip->multi_devno = 4;          /* x 1 */
1350         chip->capture_devno = 5;        /* x 2 */
1351         chip->num_devs = 7;
1352         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1353
1354         /* PCM #0:  4 DSX playbacks and 1 capture */
1355         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1356         if (err < 0)
1357                 return err;
1358         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1359         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1360         pcm->private_data = chip;
1361         strcpy(pcm->name, chip->card->shortname);
1362         chip->pcms[0] = pcm;
1363         /* set up playbacks */
1364         for (i = 0; i < 4; i++)
1365                 init_viadev(chip, i, 0x10 * i, i, 0);
1366         /* capture */
1367         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1368
1369         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1370                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1371                 return err;
1372
1373         /* PCM #1:  multi-channel playback and 2nd capture */
1374         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1375         if (err < 0)
1376                 return err;
1377         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1378         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1379         pcm->private_data = chip;
1380         strcpy(pcm->name, chip->card->shortname);
1381         chip->pcms[1] = pcm;
1382         /* set up playback */
1383         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1384         /* set up capture */
1385         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1386
1387         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1388                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1389                 return err;
1390
1391         return 0;
1392 }
1393
1394 /*
1395  * create pcm instances for VIA8233A
1396  */
1397 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1398 {
1399         snd_pcm_t *pcm;
1400         int err;
1401
1402         chip->multi_devno = 0;
1403         chip->playback_devno = 1;
1404         chip->capture_devno = 2;
1405         chip->num_devs = 3;
1406         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1407
1408         /* PCM #0:  multi-channel playback and capture */
1409         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1410         if (err < 0)
1411                 return err;
1412         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1413         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1414         pcm->private_data = chip;
1415         strcpy(pcm->name, chip->card->shortname);
1416         chip->pcms[0] = pcm;
1417         /* set up playback */
1418         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1419         /* capture */
1420         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1421
1422         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1423                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1424                 return err;
1425
1426         /* SPDIF supported? */
1427         if (! ac97_can_spdif(chip->ac97))
1428                 return 0;
1429
1430         /* PCM #1:  DXS3 playback (for spdif) */
1431         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1432         if (err < 0)
1433                 return err;
1434         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1435         pcm->private_data = chip;
1436         strcpy(pcm->name, chip->card->shortname);
1437         chip->pcms[1] = pcm;
1438         /* set up playback */
1439         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1440
1441         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1442                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1443                 return err;
1444
1445         return 0;
1446 }
1447
1448 /*
1449  * create a pcm instance for via686a/b
1450  */
1451 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1452 {
1453         snd_pcm_t *pcm;
1454         int err;
1455
1456         chip->playback_devno = 0;
1457         chip->capture_devno = 1;
1458         chip->num_devs = 2;
1459         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1460
1461         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1462         if (err < 0)
1463                 return err;
1464         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1465         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1466         pcm->private_data = chip;
1467         strcpy(pcm->name, chip->card->shortname);
1468         chip->pcms[0] = pcm;
1469         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1470         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1471
1472         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1473                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1474                 return err;
1475
1476         return 0;
1477 }
1478
1479
1480 /*
1481  *  Mixer part
1482  */
1483
1484 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1485 {
1486         /* formerly they were "Line" and "Mic", but it looks like that they
1487          * have nothing to do with the actual physical connections...
1488          */
1489         static char *texts[2] = {
1490                 "Input1", "Input2"
1491         };
1492         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1493         uinfo->count = 1;
1494         uinfo->value.enumerated.items = 2;
1495         if (uinfo->value.enumerated.item >= 2)
1496                 uinfo->value.enumerated.item = 1;
1497         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1498         return 0;
1499 }
1500
1501 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1502 {
1503         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1504         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1505         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1506         return 0;
1507 }
1508
1509 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1510 {
1511         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1512         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1513         u8 val, oval;
1514
1515         spin_lock_irq(&chip->reg_lock);
1516         oval = inb(port);
1517         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1518         if (ucontrol->value.enumerated.item[0])
1519                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1520         if (val != oval)
1521                 outb(val, port);
1522         spin_unlock_irq(&chip->reg_lock);
1523         return val != oval;
1524 }
1525
1526 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1527         .name = "Input Source Select",
1528         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1529         .info = snd_via8233_capture_source_info,
1530         .get = snd_via8233_capture_source_get,
1531         .put = snd_via8233_capture_source_put,
1532 };
1533
1534 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1535 {
1536         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1537         uinfo->count = 1;
1538         uinfo->value.integer.min = 0;
1539         uinfo->value.integer.max = 1;
1540         return 0;
1541 }
1542
1543 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1544 {
1545         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1546         u8 val;
1547
1548         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1549         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1550         return 0;
1551 }
1552
1553 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1554 {
1555         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1556         u8 val, oval;
1557
1558         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1559         val = oval & ~VIA8233_SPDIF_DX3;
1560         if (ucontrol->value.integer.value[0])
1561                 val |= VIA8233_SPDIF_DX3;
1562         /* save the spdif flag for rate filtering */
1563         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1564         if (val != oval) {
1565                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1566                 return 1;
1567         }
1568         return 0;
1569 }
1570
1571 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1572         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1573         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1574         .info = snd_via8233_dxs3_spdif_info,
1575         .get = snd_via8233_dxs3_spdif_get,
1576         .put = snd_via8233_dxs3_spdif_put,
1577 };
1578
1579 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1580 {
1581         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1582         uinfo->count = 2;
1583         uinfo->value.integer.min = 0;
1584         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1585         return 0;
1586 }
1587
1588 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1589 {
1590         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1591         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1592
1593         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1594         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1595         return 0;
1596 }
1597
1598 static int snd_via8233_pcmdxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1599 {
1600         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1601         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1602         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1603         return 0;
1604 }
1605
1606 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1607 {
1608         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1609         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1610         unsigned long port = chip->port + 0x10 * idx;
1611         unsigned char val;
1612         int i, change = 0;
1613
1614         for (i = 0; i < 2; i++) {
1615                 val = ucontrol->value.integer.value[i];
1616                 if (val > VIA_DXS_MAX_VOLUME)
1617                         val = VIA_DXS_MAX_VOLUME;
1618                 val = VIA_DXS_MAX_VOLUME - val;
1619                 change |= val != chip->playback_volume[idx][i];
1620                 if (change) {
1621                         chip->playback_volume[idx][i] = val;
1622                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1623                 }
1624         }
1625         return change;
1626 }
1627
1628 static int snd_via8233_pcmdxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1629 {
1630         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1631         unsigned int idx;
1632         unsigned char val;
1633         int i, change = 0;
1634
1635         for (i = 0; i < 2; i++) {
1636                 val = ucontrol->value.integer.value[i];
1637                 if (val > VIA_DXS_MAX_VOLUME)
1638                         val = VIA_DXS_MAX_VOLUME;
1639                 val = VIA_DXS_MAX_VOLUME - val;
1640                 if (val != chip->playback_volume_c[i]) {
1641                         change = 1;
1642                         chip->playback_volume_c[i] = val;
1643                         for (idx = 0; idx < 4; idx++) {
1644                                 unsigned long port = chip->port + 0x10 * idx;
1645                                 chip->playback_volume[idx][i] = val;
1646                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1647                         }
1648                 }
1649         }
1650         return change;
1651 }
1652
1653 static snd_kcontrol_new_t snd_via8233_pcmdxs_volume_control __devinitdata = {
1654         .name = "PCM Playback Volume",
1655         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1656         .info = snd_via8233_dxs_volume_info,
1657         .get = snd_via8233_pcmdxs_volume_get,
1658         .put = snd_via8233_pcmdxs_volume_put,
1659 };
1660
1661 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1662         .name = "VIA DXS Playback Volume",
1663         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1664         .count = 4,
1665         .info = snd_via8233_dxs_volume_info,
1666         .get = snd_via8233_dxs_volume_get,
1667         .put = snd_via8233_dxs_volume_put,
1668 };
1669
1670 /*
1671  */
1672
1673 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1674 {
1675         via82xx_t *chip = bus->private_data;
1676         chip->ac97_bus = NULL;
1677 }
1678
1679 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1680 {
1681         via82xx_t *chip = ac97->private_data;
1682         chip->ac97 = NULL;
1683 }
1684
1685 static struct ac97_quirk ac97_quirks[] = {
1686         {
1687                 .subvendor = 0x1106,
1688                 .subdevice = 0x4161,
1689                 .codec_id = 0x56494161, /* VT1612A */
1690                 .name = "Soltek SL-75DRV5",
1691                 .type = AC97_TUNE_NONE
1692         },
1693         {       /* FIXME: which codec? */
1694                 .subvendor = 0x1106,
1695                 .subdevice = 0x4161,
1696                 .name = "ASRock K7VT2",
1697                 .type = AC97_TUNE_HP_ONLY
1698         },
1699         {
1700                 .subvendor = 0x1019,
1701                 .subdevice = 0x0a81,
1702                 .name = "ECS K7VTA3",
1703                 .type = AC97_TUNE_HP_ONLY
1704         },
1705         {
1706                 .subvendor = 0x1019,
1707                 .subdevice = 0x0a85,
1708                 .name = "ECS L7VMM2",
1709                 .type = AC97_TUNE_HP_ONLY
1710         },
1711         {
1712                 .subvendor = 0x1849,
1713                 .subdevice = 0x3059,
1714                 .name = "ASRock K7VM2",
1715                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1716         },
1717         {
1718                 .subvendor = 0x14cd,
1719                 .subdevice = 0x7002,
1720                 .name = "Unknown",
1721                 .type = AC97_TUNE_ALC_JACK
1722         },
1723         {
1724                 .subvendor = 0x1071,
1725                 .subdevice = 0x8590,
1726                 .name = "Mitac Mobo",
1727                 .type = AC97_TUNE_ALC_JACK
1728         },
1729         {
1730                 .subvendor = 0x161f,
1731                 .subdevice = 0x202b,
1732                 .name = "Arima Notebook",
1733                 .type = AC97_TUNE_HP_ONLY,
1734         },
1735         { } /* terminator */
1736 };
1737
1738 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_override)
1739 {
1740         ac97_template_t ac97;
1741         int err;
1742         static ac97_bus_ops_t ops = {
1743                 .write = snd_via82xx_codec_write,
1744                 .read = snd_via82xx_codec_read,
1745                 .wait = snd_via82xx_codec_wait,
1746         };
1747
1748         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1749                 return err;
1750         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1751         chip->ac97_bus->clock = chip->ac97_clock;
1752
1753         memset(&ac97, 0, sizeof(ac97));
1754         ac97.private_data = chip;
1755         ac97.private_free = snd_via82xx_mixer_free_ac97;
1756         ac97.pci = chip->pci;
1757         ac97.scaps = AC97_SCAP_SKIP_MODEM;
1758         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1759                 return err;
1760
1761         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1762
1763         if (chip->chip_type != TYPE_VIA686) {
1764                 /* use slot 10/11 */
1765                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1766         }
1767
1768         return 0;
1769 }
1770
1771 #ifdef SUPPORT_JOYSTICK
1772 #define JOYSTICK_ADDR   0x200
1773 static int __devinit snd_via686_create_gameport(via82xx_t *chip, unsigned char *legacy)
1774 {
1775         struct gameport *gp;
1776         struct resource *r;
1777
1778         if (!joystick)
1779                 return -ENODEV;
1780
1781         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1782         if (!r) {
1783                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n", JOYSTICK_ADDR);
1784                 return -EBUSY;
1785         }
1786
1787         chip->gameport = gp = gameport_allocate_port();
1788         if (!gp) {
1789                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1790                 release_and_free_resource(r);
1791                 return -ENOMEM;
1792         }
1793
1794         gameport_set_name(gp, "VIA686 Gameport");
1795         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1796         gameport_set_dev_parent(gp, &chip->pci->dev);
1797         gp->io = JOYSTICK_ADDR;
1798         gameport_set_port_data(gp, r);
1799
1800         /* Enable legacy joystick port */
1801         *legacy |= VIA_FUNC_ENABLE_GAME;
1802         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1803
1804         gameport_register_port(chip->gameport);
1805
1806         return 0;
1807 }
1808
1809 static void snd_via686_free_gameport(via82xx_t *chip)
1810 {
1811         if (chip->gameport) {
1812                 struct resource *r = gameport_get_port_data(chip->gameport);
1813
1814                 gameport_unregister_port(chip->gameport);
1815                 chip->gameport = NULL;
1816                 release_and_free_resource(r);
1817         }
1818 }
1819 #else
1820 static inline int snd_via686_create_gameport(via82xx_t *chip, unsigned char *legacy)
1821 {
1822         return -ENOSYS;
1823 }
1824 static inline void snd_via686_free_gameport(via82xx_t *chip) { }
1825 #endif
1826
1827
1828 /*
1829  *
1830  */
1831
1832 static int __devinit snd_via8233_init_misc(via82xx_t *chip)
1833 {
1834         int i, err, caps;
1835         unsigned char val;
1836
1837         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1838         for (i = 0; i < caps; i++) {
1839                 snd_via8233_capture_source.index = i;
1840                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1841                 if (err < 0)
1842                         return err;
1843         }
1844         if (ac97_can_spdif(chip->ac97)) {
1845                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1846                 if (err < 0)
1847                         return err;
1848         }
1849         if (chip->chip_type != TYPE_VIA8233A) {
1850                 /* when no h/w PCM volume control is found, use DXS volume control
1851                  * as the PCM vol control
1852                  */
1853                 snd_ctl_elem_id_t sid;
1854                 memset(&sid, 0, sizeof(sid));
1855                 strcpy(sid.name, "PCM Playback Volume");
1856                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1857                 if (! snd_ctl_find_id(chip->card, &sid)) {
1858                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1859                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1860                         if (err < 0)
1861                                 return err;
1862                 }
1863                 else /* Using DXS when PCM emulation is enabled is really weird */
1864                 {
1865                         /* Standalone DXS controls */
1866                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1867                         if (err < 0)
1868                                 return err;
1869                 }
1870         }
1871         /* select spdif data slot 10/11 */
1872         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1873         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1874         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1875         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1876
1877         return 0;
1878 }
1879
1880 static int __devinit snd_via686_init_misc(via82xx_t *chip)
1881 {
1882         unsigned char legacy, legacy_cfg;
1883         int rev_h = 0;
1884
1885         legacy = chip->old_legacy;
1886         legacy_cfg = chip->old_legacy_cfg;
1887         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1888         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1889         if (chip->revision >= VIA_REV_686_H) {
1890                 rev_h = 1;
1891                 if (mpu_port >= 0x200) {        /* force MIDI */
1892                         mpu_port &= 0xfffc;
1893                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1894 #ifdef CONFIG_PM
1895                         chip->mpu_port_saved = mpu_port;
1896 #endif
1897                 } else {
1898                         mpu_port = pci_resource_start(chip->pci, 2);
1899                 }
1900         } else {
1901                 switch (mpu_port) {     /* force MIDI */
1902                 case 0x300:
1903                 case 0x310:
1904                 case 0x320:
1905                 case 0x330:
1906                         legacy_cfg &= ~(3 << 2);
1907                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1908                         break;
1909                 default:                        /* no, use BIOS settings */
1910                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1911                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1912                         break;
1913                 }
1914         }
1915         if (mpu_port >= 0x200 &&
1916             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1917             != NULL) {
1918                 if (rev_h)
1919                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1920                 legacy |= VIA_FUNC_ENABLE_MIDI;
1921         } else {
1922                 if (rev_h)
1923                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1924                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1925                 mpu_port = 0;
1926         }
1927
1928         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1929         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1930         if (chip->mpu_res) {
1931                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1932                                         mpu_port, 1,
1933                                         chip->irq, 0, &chip->rmidi) < 0) {
1934                         printk(KERN_WARNING "unable to initialize MPU-401"
1935                                " at 0x%lx, skipping\n", mpu_port);
1936                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1937                 } else {
1938                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1939                 }
1940                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1941         }
1942
1943         snd_via686_create_gameport(chip, &legacy);
1944
1945 #ifdef CONFIG_PM
1946         chip->legacy_saved = legacy;
1947         chip->legacy_cfg_saved = legacy_cfg;
1948 #endif
1949
1950         return 0;
1951 }
1952
1953
1954 /*
1955  * proc interface
1956  */
1957 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1958 {
1959         via82xx_t *chip = entry->private_data;
1960         int i;
1961
1962         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1963         for (i = 0; i < 0xa0; i += 4) {
1964                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1965         }
1966 }
1967
1968 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1969 {
1970         snd_info_entry_t *entry;
1971
1972         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1973                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1974 }
1975
1976 /*
1977  *
1978  */
1979
1980 static int snd_via82xx_chip_init(via82xx_t *chip)
1981 {
1982         unsigned int val;
1983         unsigned long end_time;
1984         unsigned char pval;
1985
1986 #if 0 /* broken on K7M? */
1987         if (chip->chip_type == TYPE_VIA686)
1988                 /* disable all legacy ports */
1989                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1990 #endif
1991         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1992         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1993                 /* deassert ACLink reset, force SYNC */
1994                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1995                                       VIA_ACLINK_CTRL_ENABLE |
1996                                       VIA_ACLINK_CTRL_RESET |
1997                                       VIA_ACLINK_CTRL_SYNC);
1998                 udelay(100);
1999 #if 1 /* FIXME: should we do full reset here for all chip models? */
2000                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2001                 udelay(100);
2002 #else
2003                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2004                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2005                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2006                 udelay(2);
2007 #endif
2008                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2009                 /* note - FM data out has trouble with non VRA codecs !! */
2010                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2011                 udelay(100);
2012         }
2013
2014         /* Make sure VRA is enabled, in case we didn't do a
2015          * complete codec reset, above */
2016         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2017         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2018                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2019                 /* note - FM data out has trouble with non VRA codecs !! */
2020                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2021                 udelay(100);
2022         }
2023
2024         /* wait until codec ready */
2025         end_time = jiffies + msecs_to_jiffies(750);
2026         do {
2027                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2028                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2029                         break;
2030                 schedule_timeout_uninterruptible(1);
2031         } while (time_before(jiffies, end_time));
2032
2033         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2034                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2035
2036 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2037         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2038                                  VIA_REG_AC97_SECONDARY_VALID |
2039                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2040         end_time = jiffies + msecs_to_jiffies(750);
2041         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2042                                  VIA_REG_AC97_SECONDARY_VALID |
2043                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2044         do {
2045                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2046                         chip->ac97_secondary = 1;
2047                         goto __ac97_ok2;
2048                 }
2049                 schedule_timeout_interruptible(1);
2050         } while (time_before(jiffies, end_time));
2051         /* This is ok, the most of motherboards have only one codec */
2052
2053       __ac97_ok2:
2054 #endif
2055
2056         if (chip->chip_type == TYPE_VIA686) {
2057                 /* route FM trap to IRQ, disable FM trap */
2058                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2059                 /* disable all GPI interrupts */
2060                 outl(0, VIAREG(chip, GPI_INTR));
2061         }
2062
2063         if (chip->chip_type != TYPE_VIA686) {
2064                 /* Workaround for Award BIOS bug:
2065                  * DXS channels don't work properly with VRA if MC97 is disabled.
2066                  */
2067                 struct pci_dev *pci;
2068                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2069                 if (pci) {
2070                         unsigned char data;
2071                         pci_read_config_byte(pci, 0x44, &data);
2072                         pci_write_config_byte(pci, 0x44, data | 0x40);
2073                         pci_dev_put(pci);
2074                 }
2075         }
2076
2077         if (chip->chip_type != TYPE_VIA8233A) {
2078                 int i, idx;
2079                 for (idx = 0; idx < 4; idx++) {
2080                         unsigned long port = chip->port + 0x10 * idx;
2081                         for (i = 0; i < 2; i++) {
2082                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2083                                 outb(chip->playback_volume_c[i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2084                         }
2085                 }
2086         }
2087
2088         return 0;
2089 }
2090
2091 #ifdef CONFIG_PM
2092 /*
2093  * power management
2094  */
2095 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
2096 {
2097         via82xx_t *chip = card->pm_private_data;
2098         int i;
2099
2100         for (i = 0; i < 2; i++)
2101                 if (chip->pcms[i])
2102                         snd_pcm_suspend_all(chip->pcms[i]);
2103         for (i = 0; i < chip->num_devs; i++)
2104                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2105         synchronize_irq(chip->irq);
2106         snd_ac97_suspend(chip->ac97);
2107
2108         /* save misc values */
2109         if (chip->chip_type != TYPE_VIA686) {
2110                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2111                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2112                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2113         }
2114
2115         pci_set_power_state(chip->pci, 3);
2116         pci_disable_device(chip->pci);
2117         return 0;
2118 }
2119
2120 static int snd_via82xx_resume(snd_card_t *card)
2121 {
2122         via82xx_t *chip = card->pm_private_data;
2123         int i;
2124
2125         pci_enable_device(chip->pci);
2126         pci_set_power_state(chip->pci, 0);
2127
2128         snd_via82xx_chip_init(chip);
2129
2130         if (chip->chip_type == TYPE_VIA686) {
2131                 if (chip->mpu_port_saved)
2132                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2133                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2134                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2135         } else {
2136                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2137                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2138                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2139         }
2140
2141         snd_ac97_resume(chip->ac97);
2142
2143         for (i = 0; i < chip->num_devs; i++)
2144                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2145
2146         return 0;
2147 }
2148 #endif /* CONFIG_PM */
2149
2150 static int snd_via82xx_free(via82xx_t *chip)
2151 {
2152         unsigned int i;
2153
2154         if (chip->irq < 0)
2155                 goto __end_hw;
2156         /* disable interrupts */
2157         for (i = 0; i < chip->num_devs; i++)
2158                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2159         synchronize_irq(chip->irq);
2160       __end_hw:
2161         if (chip->irq >= 0)
2162                 free_irq(chip->irq, (void *)chip);
2163         release_and_free_resource(chip->mpu_res);
2164         pci_release_regions(chip->pci);
2165
2166         if (chip->chip_type == TYPE_VIA686) {
2167                 snd_via686_free_gameport(chip);
2168                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2169                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2170         }
2171         pci_disable_device(chip->pci);
2172         kfree(chip);
2173         return 0;
2174 }
2175
2176 static int snd_via82xx_dev_free(snd_device_t *device)
2177 {
2178         via82xx_t *chip = device->device_data;
2179         return snd_via82xx_free(chip);
2180 }
2181
2182 static int __devinit snd_via82xx_create(snd_card_t * card,
2183                                         struct pci_dev *pci,
2184                                         int chip_type,
2185                                         int revision,
2186                                         unsigned int ac97_clock,
2187                                         via82xx_t ** r_via)
2188 {
2189         via82xx_t *chip;
2190         int err;
2191         static snd_device_ops_t ops = {
2192                 .dev_free =     snd_via82xx_dev_free,
2193         };
2194
2195         if ((err = pci_enable_device(pci)) < 0)
2196                 return err;
2197
2198         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2199                 pci_disable_device(pci);
2200                 return -ENOMEM;
2201         }
2202
2203         chip->chip_type = chip_type;
2204         chip->revision = revision;
2205
2206         spin_lock_init(&chip->reg_lock);
2207         spin_lock_init(&chip->rates[0].lock);
2208         spin_lock_init(&chip->rates[1].lock);
2209         chip->card = card;
2210         chip->pci = pci;
2211         chip->irq = -1;
2212
2213         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2214         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2215         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2216                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2217
2218         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2219                 kfree(chip);
2220                 pci_disable_device(pci);
2221                 return err;
2222         }
2223         chip->port = pci_resource_start(pci, 0);
2224         if (request_irq(pci->irq,
2225                         chip_type == TYPE_VIA8233 ?
2226                         snd_via8233_interrupt : snd_via686_interrupt,
2227                         SA_INTERRUPT|SA_SHIRQ,
2228                         card->driver, (void *)chip)) {
2229                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2230                 snd_via82xx_free(chip);
2231                 return -EBUSY;
2232         }
2233         chip->irq = pci->irq;
2234         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2235                 chip->ac97_clock = ac97_clock;
2236         synchronize_irq(chip->irq);
2237
2238         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2239                 snd_via82xx_free(chip);
2240                 return err;
2241         }
2242
2243         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2244                 snd_via82xx_free(chip);
2245                 return err;
2246         }
2247
2248         /* The 8233 ac97 controller does not implement the master bit
2249          * in the pci command register. IMHO this is a violation of the PCI spec.
2250          * We call pci_set_master here because it does not hurt. */
2251         pci_set_master(pci);
2252
2253         snd_card_set_dev(card, &pci->dev);
2254
2255         *r_via = chip;
2256         return 0;
2257 }
2258
2259 struct via823x_info {
2260         int revision;
2261         char *name;
2262         int type;
2263 };
2264 static struct via823x_info via823x_cards[] __devinitdata = {
2265         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2266         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2267         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2268         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2269         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2270         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2271 };
2272
2273 /*
2274  * auto detection of DXS channel supports.
2275  */
2276 struct dxs_whitelist {
2277         unsigned short subvendor;
2278         unsigned short subdevice;
2279         unsigned short mask;
2280         short action;   /* new dxs_support value */
2281 };
2282
2283 static int __devinit check_dxs_list(struct pci_dev *pci)
2284 {
2285         static struct dxs_whitelist whitelist[] = {
2286                 { .subvendor = 0x1005, .subdevice = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2287                 { .subvendor = 0x1019, .subdevice = 0x0996, .action = VIA_DXS_48K },
2288                 { .subvendor = 0x1019, .subdevice = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2289                 { .subvendor = 0x1019, .subdevice = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2290                 { .subvendor = 0x1019, .subdevice = 0xa101, .action = VIA_DXS_SRC },
2291                 { .subvendor = 0x1025, .subdevice = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2292                 { .subvendor = 0x1025, .subdevice = 0x0046, .action = VIA_DXS_SRC }, /* Acer Aspire 1524 WLMi */
2293                 { .subvendor = 0x1043, .subdevice = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2294                 { .subvendor = 0x1043, .subdevice = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2295                 { .subvendor = 0x1043, .subdevice = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2296                 { .subvendor = 0x1043, .subdevice = 0x810d, .action = VIA_DXS_SRC }, /* ASUS */
2297                 { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC    }, /* ASUS A8V Deluxe */
2298                 { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2299                 { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */
2300                 { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2301                 { .subvendor = 0x1106, .subdevice = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2302                 { .subvendor = 0x1106, .subdevice = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2303                 { .subvendor = 0x1106, .subdevice = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2304                 { .subvendor = 0x1106, .subdevice = 0xc001, .action = VIA_DXS_SRC }, /* Insight P4-ITX */
2305                 { .subvendor = 0x1297, .subdevice = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2306                 { .subvendor = 0x1297, .subdevice = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2307                 { .subvendor = 0x1458, .subdevice = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2308                 { .subvendor = 0x1462, .subdevice = 0x0080, .action = VIA_DXS_SRC }, /* MSI K8T Neo-FIS2R */
2309                 { .subvendor = 0x1462, .subdevice = 0x0430, .action = VIA_DXS_SRC }, /* MSI 7142 (K8MM-V) */
2310                 { .subvendor = 0x1462, .subdevice = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2311                 { .subvendor = 0x1462, .subdevice = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2312                 { .subvendor = 0x1462, .subdevice = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2313                 { .subvendor = 0x1462, .subdevice = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2314                 { .subvendor = 0x1462, .subdevice = 0x7142, .action = VIA_DXS_ENABLE }, /* MSI K8MM-V */
2315                 { .subvendor = 0x147b, .subdevice = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2316                 { .subvendor = 0x147b, .subdevice = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2317                 { .subvendor = 0x147b, .subdevice = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2318                 { .subvendor = 0x147b, .subdevice = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2319                 { .subvendor = 0x14ff, .subdevice = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2320                 { .subvendor = 0x14ff, .subdevice = 0x0408, .action = VIA_DXS_SRC }, /* Twinhead laptop */
2321                 { .subvendor = 0x1558, .subdevice = 0x4701, .action = VIA_DXS_SRC }, /* Clevo D470 */
2322                 { .subvendor = 0x1584, .subdevice = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2323                 { .subvendor = 0x1584, .subdevice = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2324                 { .subvendor = 0x161f, .subdevice = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2325                 { .subvendor = 0x161f, .subdevice = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2326                 { .subvendor = 0x1631, .subdevice = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2327                 { .subvendor = 0x1695, .subdevice = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2328                 { .subvendor = 0x1849, .subdevice = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2329                 { .subvendor = 0x1919, .subdevice = 0x200a, .action = VIA_DXS_NO_VRA }, /* Soltek SL-K8Tpro-939 */
2330                 { .subvendor = 0x4005, .subdevice = 0x4710, .action = VIA_DXS_SRC },    /* MSI K7T266 Pro2 (MS-6380 V2.0) BIOS 3.7 */
2331                 { } /* terminator */
2332         };
2333         struct dxs_whitelist *w;
2334         unsigned short subsystem_vendor;
2335         unsigned short subsystem_device;
2336
2337         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2338         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2339
2340         for (w = whitelist; w->subvendor; w++) {
2341                 if (w->subvendor != subsystem_vendor)
2342                         continue;
2343                 if (w->mask) {
2344                         if ((w->mask & subsystem_device) == w->subdevice)
2345                                 return w->action;
2346                 } else {
2347                         if (subsystem_device == w->subdevice)
2348                                 return w->action;
2349                 }
2350         }
2351
2352         /*
2353          * not detected, try 48k rate only to be sure.
2354          */
2355         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2356         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2357         printk(KERN_INFO "         and report if it works on your machine.\n");
2358         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2359         return VIA_DXS_48K;
2360 };
2361
2362 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2363                                        const struct pci_device_id *pci_id)
2364 {
2365         snd_card_t *card;
2366         via82xx_t *chip;
2367         unsigned char revision;
2368         int chip_type = 0, card_type;
2369         unsigned int i;
2370         int err;
2371
2372         card = snd_card_new(index, id, THIS_MODULE, 0);
2373         if (card == NULL)
2374                 return -ENOMEM;
2375
2376         card_type = pci_id->driver_data;
2377         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2378         switch (card_type) {
2379         case TYPE_CARD_VIA686:
2380                 strcpy(card->driver, "VIA686A");
2381                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2382                 chip_type = TYPE_VIA686;
2383                 break;
2384         case TYPE_CARD_VIA8233:
2385                 chip_type = TYPE_VIA8233;
2386                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2387                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2388                         if (revision == via823x_cards[i].revision) {
2389                                 chip_type = via823x_cards[i].type;
2390                                 strcpy(card->shortname, via823x_cards[i].name);
2391                                 break;
2392                         }
2393                 }
2394                 if (chip_type != TYPE_VIA8233A) {
2395                         if (dxs_support == VIA_DXS_AUTO)
2396                                 dxs_support = check_dxs_list(pci);
2397                         /* force to use VIA8233 or 8233A model according to
2398                          * dxs_support module option
2399                          */
2400                         if (dxs_support == VIA_DXS_DISABLE)
2401                                 chip_type = TYPE_VIA8233A;
2402                         else
2403                                 chip_type = TYPE_VIA8233;
2404                 }
2405                 if (chip_type == TYPE_VIA8233A)
2406                         strcpy(card->driver, "VIA8233A");
2407                 else if (revision >= VIA_REV_8237)
2408                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2409                 else
2410                         strcpy(card->driver, "VIA8233");
2411                 break;
2412         default:
2413                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2414                 err = -EINVAL;
2415                 goto __error;
2416         }
2417
2418         if ((err = snd_via82xx_create(card, pci, chip_type, revision,
2419                                       ac97_clock, &chip)) < 0)
2420                 goto __error;
2421         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2422                 goto __error;
2423
2424         if (chip_type == TYPE_VIA686) {
2425                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2426                     (err = snd_via686_init_misc(chip)) < 0)
2427                         goto __error;
2428         } else {
2429                 if (chip_type == TYPE_VIA8233A) {
2430                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2431                                 goto __error;
2432                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2433                 } else {
2434                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2435                                 goto __error;
2436                         if (dxs_support == VIA_DXS_48K)
2437                                 chip->dxs_fixed = 1;
2438                         else if (dxs_support == VIA_DXS_NO_VRA)
2439                                 chip->no_vra = 1;
2440                         else if (dxs_support == VIA_DXS_SRC) {
2441                                 chip->no_vra = 1;
2442                                 chip->dxs_src = 1;
2443                         }
2444                 }
2445                 if ((err = snd_via8233_init_misc(chip)) < 0)
2446                         goto __error;
2447         }
2448
2449         snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
2450
2451         /* disable interrupts */
2452         for (i = 0; i < chip->num_devs; i++)
2453                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2454
2455         snprintf(card->longname, sizeof(card->longname),
2456                  "%s with %s at %#lx, irq %d", card->shortname,
2457                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2458
2459         snd_via82xx_proc_init(chip);
2460
2461         if ((err = snd_card_register(card)) < 0) {
2462                 snd_card_free(card);
2463                 return err;
2464         }
2465         pci_set_drvdata(pci, card);
2466         return 0;
2467
2468  __error:
2469         snd_card_free(card);
2470         return err;
2471 }
2472
2473 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2474 {
2475         snd_card_free(pci_get_drvdata(pci));
2476         pci_set_drvdata(pci, NULL);
2477 }
2478
2479 static struct pci_driver driver = {
2480         .name = "VIA 82xx Audio",
2481         .owner = THIS_MODULE,
2482         .id_table = snd_via82xx_ids,
2483         .probe = snd_via82xx_probe,
2484         .remove = __devexit_p(snd_via82xx_remove),
2485         SND_PCI_PM_CALLBACKS
2486 };
2487
2488 static int __init alsa_card_via82xx_init(void)
2489 {
2490         return pci_register_driver(&driver);
2491 }
2492
2493 static void __exit alsa_card_via82xx_exit(void)
2494 {
2495         pci_unregister_driver(&driver);
2496 }
2497
2498 module_init(alsa_card_via82xx_init)
2499 module_exit(alsa_card_via82xx_exit)