sound/pci/via82xx.c

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  */
  45
  46 #include <sound/driver.h>
  47 #include <asm/io.h>
  48 #include <linux/delay.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/init.h>
  51 #include <linux/pci.h>
  52 #include <linux/slab.h>
  53 #include <linux/gameport.h>
  54 #include <linux/moduleparam.h>
  55 #include <sound/core.h>
  56 #include <sound/pcm.h>
  57 #include <sound/pcm_params.h>
  58 #include <sound/info.h>
  59 #include <sound/ac97_codec.h>
  60 #include <sound/mpu401.h>
  61 #include <sound/initval.h>
  62
  63 #if 0
  64 #define POINTER_DEBUG
  65 #endif
  66
  67 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  68 MODULE_DESCRIPTION("VIA VT82xx audio");
  69 MODULE_LICENSE("GPL");
  70 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  71
  72 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  73 #define SUPPORT_JOYSTICK 1
  74 #endif
  75
  76 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  77 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  78 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  79 static long mpu_port[SNDRV_CARDS];
  80 #ifdef SUPPORT_JOYSTICK
  81 static int joystick[SNDRV_CARDS];
  82 #endif
  83 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
  84 static char *ac97_quirk[SNDRV_CARDS];
  85 static int dxs_support[SNDRV_CARDS];
  86
  87 module_param_array(index, int, NULL, 0444);
  88 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  89 module_param_array(id, charp, NULL, 0444);
  90 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  91 module_param_array(enable, bool, NULL, 0444);
  92 MODULE_PARM_DESC(enable, "Enable audio part of VIA 82xx bridge.");
  93 module_param_array(mpu_port, long, NULL, 0444);
  94 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  95 #ifdef SUPPORT_JOYSTICK
  96 module_param_array(joystick, bool, NULL, 0444);
  97 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  98 #endif
  99 module_param_array(ac97_clock, int, NULL, 0444);
 100 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 101 module_param_array(ac97_quirk, charp, NULL, 0444);
 102 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 103 module_param_array(dxs_support, int, NULL, 0444);
 104 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA)");
 105
 106
 107 /* pci ids */
 108 #ifndef PCI_DEVICE_ID_VIA_82C686_5
 109 #define PCI_DEVICE_ID_VIA_82C686_5      0x3058
 110 #endif
 111 #ifndef PCI_DEVICE_ID_VIA_8233_5
 112 #define PCI_DEVICE_ID_VIA_8233_5        0x3059
 113 #endif
 114
 115 /* revision numbers for via686 */
 116 #define VIA_REV_686_A           0x10
 117 #define VIA_REV_686_B           0x11
 118 #define VIA_REV_686_C           0x12
 119 #define VIA_REV_686_D           0x13
 120 #define VIA_REV_686_E           0x14
 121 #define VIA_REV_686_H           0x20
 122
 123 /* revision numbers for via8233 */
 124 #define VIA_REV_PRE_8233        0x10    /* not in market */
 125 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 126 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 127 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 128 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 129 #define VIA_REV_8237            0x60
 130
 131 /*
 132  *  Direct registers
 133  */
 134
 135 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 136 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 137
 138 /* common offsets */
 139 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 140 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 141 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 142 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 143 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 144 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 145 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 146 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 147 #define   VIA_REG_CTRL_START            0x80    /* WO */
 148 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 149 #define   VIA_REG_CTRL_AUTOSTART        0x20
 150 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 151 #define   VIA_REG_CTRL_INT_STOP         0x04
 152 #define   VIA_REG_CTRL_INT_EOL          0x02
 153 #define   VIA_REG_CTRL_INT_FLAG         0x01
 154 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 155 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 156 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 157 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 158 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 159 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 160 #define   VIA_REG_TYPE_INT_LLINE        0x00
 161 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 162 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 163 #define   VIA_REG_TYPE_INT_MASK         0x0c
 164 #define   VIA_REG_TYPE_INT_EOL          0x02
 165 #define   VIA_REG_TYPE_INT_FLAG         0x01
 166 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 167 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 168 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 169 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 170 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 171 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 172 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 173
 174 #define DEFINE_VIA_REGSET(name,val) \
 175 enum {\
 176         VIA_REG_##name##_STATUS         = (val),\
 177         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 178         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 179         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 180         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 181         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 182         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 183 }
 184
 185 /* playback block */
 186 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 187 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 188 DEFINE_VIA_REGSET(FM, 0x20);
 189
 190 /* AC'97 */
 191 #define VIA_REG_AC97                    0x80    /* dword */
 192 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 193 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 194 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 195 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 196 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 197 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 198 #define   VIA_REG_AC97_BUSY             (1<<24)
 199 #define   VIA_REG_AC97_READ             (1<<23)
 200 #define   VIA_REG_AC97_CMD_SHIFT        16
 201 #define   VIA_REG_AC97_CMD_MASK         0x7e
 202 #define   VIA_REG_AC97_DATA_SHIFT       0
 203 #define   VIA_REG_AC97_DATA_MASK        0xffff
 204
 205 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 206 /* via686 */
 207 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 208 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 209 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 210 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 211 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 212 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 213 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 214 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 215 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 216 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 217 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 218 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 219 /* via8233 */
 220 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 221 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 222 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 223 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 224 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 225 #define   VIA8233_REG_SGD_CHAN_SDX      0
 226 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 227 #define   VIA8233_REG_SGD_CHAN_REC      6
 228 #define   VIA8233_REG_SGD_CHAN_REC1     7
 229
 230 #define VIA_REG_GPI_STATUS              0x88
 231 #define VIA_REG_GPI_INTR                0x8c
 232
 233 /* multi-channel and capture registers for via8233 */
 234 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 235 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 236
 237 /* via8233-specific registers */
 238 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 239 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 240 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 241 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 242 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 243 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 244 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 245 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 246
 247 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 248
 249 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 250 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 251 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 252 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 253
 254 #define VIA_TBL_BIT_FLAG        0x40000000
 255 #define VIA_TBL_BIT_EOL         0x80000000
 256
 257 /* pci space */
 258 #define VIA_ACLINK_STAT         0x40
 259 #define  VIA_ACLINK_C11_READY   0x20
 260 #define  VIA_ACLINK_C10_READY   0x10
 261 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 262 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 263 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 264 #define VIA_ACLINK_CTRL         0x41
 265 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 266 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 267 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 268 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 269 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 270 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 271 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 272 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 273 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 274                                  VIA_ACLINK_CTRL_RESET|\
 275                                  VIA_ACLINK_CTRL_PCM|\
 276                                  VIA_ACLINK_CTRL_VRA)
 277 #define VIA_FUNC_ENABLE         0x42
 278 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 279 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 280 #define  VIA_FUNC_RX2C_WRITE    0x20
 281 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 282 #define  VIA_FUNC_ENABLE_GAME   0x08
 283 #define  VIA_FUNC_ENABLE_FM     0x04
 284 #define  VIA_FUNC_ENABLE_MIDI   0x02
 285 #define  VIA_FUNC_ENABLE_SB     0x01
 286 #define VIA_PNP_CONTROL         0x43
 287 #define VIA_FM_NMI_CTRL         0x48
 288 #define VIA8233_VOLCHG_CTRL     0x48
 289 #define VIA8233_SPDIF_CTRL      0x49
 290 #define  VIA8233_SPDIF_DX3      0x08
 291 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 292 #define  VIA8233_SPDIF_SLOT_1011        0x00
 293 #define  VIA8233_SPDIF_SLOT_34          0x01
 294 #define  VIA8233_SPDIF_SLOT_78          0x02
 295 #define  VIA8233_SPDIF_SLOT_69          0x03
 296
 297 /*
 298  */
 299
 300 #define VIA_DXS_AUTO    0
 301 #define VIA_DXS_ENABLE  1
 302 #define VIA_DXS_DISABLE 2
 303 #define VIA_DXS_48K     3
 304 #define VIA_DXS_NO_VRA  4
 305
 306
 307 /*
 308  */
 309
 310 typedef struct _snd_via82xx via82xx_t;
 311 typedef struct via_dev viadev_t;
 312
 313 /*
 314  * pcm stream
 315  */
 316
 317 struct snd_via_sg_table {
 318         unsigned int offset;
 319         unsigned int size;
 320 } ;
 321
 322 #define VIA_TABLE_SIZE  255
 323
 324 struct via_dev {
 325         unsigned int reg_offset;
 326         unsigned long port;
 327         int direction;  /* playback = 0, capture = 1 */
 328         snd_pcm_substream_t *substream;
 329         int running;
 330         unsigned int tbl_entries; /* # descriptors */
 331         struct snd_dma_buffer table;
 332         struct snd_via_sg_table *idx_table;
 333         /* for recovery from the unexpected pointer */
 334         unsigned int lastpos;
 335         unsigned int fragsize;
 336         unsigned int bufsize;
 337         unsigned int bufsize2;
 338 };
 339
 340
 341 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 342 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 343
 344 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 345
 346 struct via_rate_lock {
 347         spinlock_t lock;
 348         int rate;
 349         int used;
 350 };
 351
 352 struct _snd_via82xx {
 353         int irq;
 354
 355         unsigned long port;
 356         struct resource *mpu_res;
 357         int chip_type;
 358         unsigned char revision;
 359
 360         unsigned char old_legacy;
 361         unsigned char old_legacy_cfg;
 362 #ifdef CONFIG_PM
 363         unsigned char legacy_saved;
 364         unsigned char legacy_cfg_saved;
 365         unsigned char spdif_ctrl_saved;
 366         unsigned char capture_src_saved[2];
 367         unsigned int mpu_port_saved;
 368 #endif
 369
 370         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 371
 372         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 373
 374         struct pci_dev *pci;
 375         snd_card_t *card;
 376
 377         unsigned int num_devs;
 378         unsigned int playback_devno, multi_devno, capture_devno;
 379         viadev_t devs[VIA_MAX_DEVS];
 380         struct via_rate_lock rates[2]; /* playback and capture */
 381         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 382         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 383         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 384
 385         snd_pcm_t *pcms[2];
 386         snd_rawmidi_t *rmidi;
 387
 388         ac97_bus_t *ac97_bus;
 389         ac97_t *ac97;
 390         unsigned int ac97_clock;
 391         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 392
 393         spinlock_t reg_lock;
 394         snd_info_entry_t *proc_entry;
 395
 396 #ifdef SUPPORT_JOYSTICK
 397         struct gameport gameport;
 398         struct resource *res_joystick;
 399 #endif
 400 };
 401
 402 static struct pci_device_id snd_via82xx_ids[] = {
 403         { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },    /* 686A */
 404         { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },   /* VT8233 */
 405         { 0, }
 406 };
 407
 408 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 409
 410 /*
 411  */
 412
 413 /*
 414  * allocate and initialize the descriptor buffers
 415  * periods = number of periods
 416  * fragsize = period size in bytes
 417  */
 418 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 419                            struct pci_dev *pci,
 420                            unsigned int periods, unsigned int fragsize)
 421 {
 422         unsigned int i, idx, ofs, rest;
 423         via82xx_t *chip = snd_pcm_substream_chip(substream);
 424         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 425
 426         if (dev->table.area == NULL) {
 427                 /* the start of each lists must be aligned to 8 bytes,
 428                  * but the kernel pages are much bigger, so we don't care
 429                  */
 430                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 431                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 432                                         &dev->table) < 0)
 433                         return -ENOMEM;
 434         }
 435         if (! dev->idx_table) {
 436                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 437                 if (! dev->idx_table)
 438                         return -ENOMEM;
 439         }
 440
 441         /* fill the entries */
 442         idx = 0;
 443         ofs = 0;
 444         for (i = 0; i < periods; i++) {
 445                 rest = fragsize;
 446                 /* fill descriptors for a period.
 447                  * a period can be split to several descriptors if it's
 448                  * over page boundary.
 449                  */
 450                 do {
 451                         unsigned int r;
 452                         unsigned int flag;
 453
 454                         if (idx >= VIA_TABLE_SIZE) {
 455                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 456                                 return -EINVAL;
 457                         }
 458                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 459                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 460                         if (rest < r)
 461                                 r = rest;
 462                         rest -= r;
 463                         if (! rest) {
 464                                 if (i == periods - 1)
 465                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 466                                 else
 467                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 468                         } else
 469                                 flag = 0; /* period continues to the next */
 470                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 471                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 472                         dev->idx_table[idx].offset = ofs;
 473                         dev->idx_table[idx].size = r;
 474                         ofs += r;
 475                         idx++;
 476                 } while (rest > 0);
 477         }
 478         dev->tbl_entries = idx;
 479         dev->bufsize = periods * fragsize;
 480         dev->bufsize2 = dev->bufsize / 2;
 481         dev->fragsize = fragsize;
 482         return 0;
 483 }
 484
 485
 486 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 487                            struct pci_dev *pci)
 488 {
 489         if (dev->table.area) {
 490                 snd_dma_free_pages(&dev->table);
 491                 dev->table.area = NULL;
 492         }
 493         if (dev->idx_table) {
 494                 kfree(dev->idx_table);
 495                 dev->idx_table = NULL;
 496         }
 497         return 0;
 498 }
 499
 500 /*
 501  *  Basic I/O
 502  */
 503
 504 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
 505 {
 506         return inl(VIAREG(chip, AC97));
 507 }
 508
 509 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
 510 {
 511         outl(val, VIAREG(chip, AC97));
 512 }
 513
 514 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
 515 {
 516         unsigned int timeout = 1000;    /* 1ms */
 517         unsigned int val;
 518
 519         while (timeout-- > 0) {
 520                 udelay(1);
 521                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 522                         return val & 0xffff;
 523         }
 524         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
 525         return -EIO;
 526 }
 527
 528 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
 529 {
 530         unsigned int timeout = 1000;    /* 1ms */
 531         unsigned int val, val1;
 532         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 533                                          VIA_REG_AC97_SECONDARY_VALID;
 534
 535         while (timeout-- > 0) {
 536                 val = snd_via82xx_codec_xread(chip);
 537                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 538                 if (val1 == stat)
 539                         return val & 0xffff;
 540                 udelay(1);
 541         }
 542         return -EIO;
 543 }
 544
 545 static void snd_via82xx_codec_wait(ac97_t *ac97)
 546 {
 547         via82xx_t *chip = ac97->private_data;
 548         int err;
 549         err = snd_via82xx_codec_ready(chip, ac97->num);
 550         /* here we need to wait fairly for long time.. */
 551         set_current_state(TASK_UNINTERRUPTIBLE);
 552         schedule_timeout(HZ/2);
 553 }
 554
 555 static void snd_via82xx_codec_write(ac97_t *ac97,
 556                                     unsigned short reg,
 557                                     unsigned short val)
 558 {
 559         via82xx_t *chip = ac97->private_data;
 560         unsigned int xval;
 561
 562         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 563         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 564         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 565         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 566         snd_via82xx_codec_xwrite(chip, xval);
 567         snd_via82xx_codec_ready(chip, ac97->num);
 568 }
 569
 570 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 571 {
 572         via82xx_t *chip = ac97->private_data;
 573         unsigned int xval, val = 0xffff;
 574         int again = 0;
 575
 576         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 577         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 578         xval |= VIA_REG_AC97_READ;
 579         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 580         while (1) {
 581                 if (again++ > 3) {
 582                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 583                         return 0xffff;
 584                 }
 585                 snd_via82xx_codec_xwrite(chip, xval);
 586                 udelay (20);
 587                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 588                         udelay(25);
 589                         val = snd_via82xx_codec_xread(chip);
 590                         break;
 591                 }
 592         }
 593         return val & 0xffff;
 594 }
 595
 596 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 597 {
 598         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 599              VIADEV_REG(viadev, OFFSET_CONTROL));
 600         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 601         udelay(50);
 602         /* disable interrupts */
 603         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 604         /* clear interrupts */
 605         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 606         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 607         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 608         viadev->lastpos = 0;
 609 }
 610
 611
 612 /*
 613  *  Interrupt handler
 614  */
 615
 616 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 617 {
 618         via82xx_t *chip = dev_id;
 619         unsigned int status;
 620         unsigned int i;
 621
 622         status = inl(VIAREG(chip, SGD_SHADOW));
 623         if (! (status & chip->intr_mask)) {
 624                 if (chip->rmidi)
 625                         /* check mpu401 interrupt */
 626                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 627                 return IRQ_NONE;
 628         }
 629
 630         /* check status for each stream */
 631         spin_lock(&chip->reg_lock);
 632         for (i = 0; i < chip->num_devs; i++) {
 633                 viadev_t *viadev = &chip->devs[i];
 634                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 635                 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
 636                 if (! c_status)
 637                         continue;
 638                 if (viadev->substream && viadev->running) {
 639                         spin_unlock(&chip->reg_lock);
 640                         snd_pcm_period_elapsed(viadev->substream);
 641                         spin_lock(&chip->reg_lock);
 642                 }
 643                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 644         }
 645         spin_unlock(&chip->reg_lock);
 646         return IRQ_HANDLED;
 647 }
 648
 649 /*
 650  *  PCM callbacks
 651  */
 652
 653 /*
 654  * trigger callback
 655  */
 656 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 657 {
 658         via82xx_t *chip = snd_pcm_substream_chip(substream);
 659         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 660         unsigned char val;
 661
 662         if (chip->chip_type != TYPE_VIA686)
 663                 val = VIA_REG_CTRL_INT;
 664         else
 665                 val = 0;
 666         switch (cmd) {
 667         case SNDRV_PCM_TRIGGER_START:
 668                 val |= VIA_REG_CTRL_START;
 669                 viadev->running = 1;
 670                 break;
 671         case SNDRV_PCM_TRIGGER_STOP:
 672                 val = VIA_REG_CTRL_TERMINATE;
 673                 viadev->running = 0;
 674                 break;
 675         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 676                 val |= VIA_REG_CTRL_PAUSE;
 677                 viadev->running = 0;
 678                 break;
 679         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 680                 viadev->running = 1;
 681                 break;
 682         default:
 683                 return -EINVAL;
 684         }
 685         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 686         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 687                 snd_via82xx_channel_reset(chip, viadev);
 688         return 0;
 689 }
 690
 691
 692 /*
 693  * pointer callbacks
 694  */
 695
 696 /*
 697  * calculate the linear position at the given sg-buffer index and the rest count
 698  */
 699
 700 #define check_invalid_pos(viadev,pos) \
 701         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 702
 703 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 704 {
 705         unsigned int size, base, res;
 706
 707         size = viadev->idx_table[idx].size;
 708         base = viadev->idx_table[idx].offset;
 709         res = base + size - count;
 710
 711         /* check the validity of the calculated position */
 712         if (size < count) {
 713                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 714                 res = viadev->lastpos;
 715         } else {
 716                 if (! count) {
 717                         /* Some mobos report count = 0 on the DMA boundary,
 718                          * i.e. count = size indeed.
 719                          * Let's check whether this step is above the expected size.
 720                          */
 721                         int delta = res - viadev->lastpos;
 722                         if (delta < 0)
 723                                 delta += viadev->bufsize;
 724                         if ((unsigned int)delta > viadev->fragsize)
 725                                 res = base;
 726                 }
 727                 if (check_invalid_pos(viadev, res)) {
 728 #ifdef POINTER_DEBUG
 729                         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);
 730 #endif
 731                         /* count register returns full size when end of buffer is reached */
 732                         res = base + size;
 733                         if (check_invalid_pos(viadev, res)) {
 734                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 735                                 res = viadev->lastpos;
 736                         }
 737                 }
 738         }
 739         viadev->lastpos = res; /* remember the last position */
 740         if (res >= viadev->bufsize)
 741                 res -= viadev->bufsize;
 742         return res;
 743 }
 744
 745 /*
 746  * get the current pointer on via686
 747  */
 748 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 749 {
 750         via82xx_t *chip = snd_pcm_substream_chip(substream);
 751         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 752         unsigned int idx, ptr, count, res;
 753
 754         snd_assert(viadev->tbl_entries, return 0);
 755         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 756                 return 0;
 757
 758         spin_lock(&chip->reg_lock);
 759         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 760         /* The via686a does not have the current index register,
 761          * so we need to calculate the index from CURR_PTR.
 762          */
 763         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 764         if (ptr <= (unsigned int)viadev->table.addr)
 765                 idx = 0;
 766         else /* CURR_PTR holds the address + 8 */
 767                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 768         res = calc_linear_pos(viadev, idx, count);
 769         spin_unlock(&chip->reg_lock);
 770
 771         return bytes_to_frames(substream->runtime, res);
 772 }
 773
 774 /*
 775  * get the current pointer on via823x
 776  */
 777 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 778 {
 779         via82xx_t *chip = snd_pcm_substream_chip(substream);
 780         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 781         unsigned int idx, count, res;
 782         int timeout = 5000;
 783
 784         snd_assert(viadev->tbl_entries, return 0);
 785         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 786                 return 0;
 787         spin_lock(&chip->reg_lock);
 788         do {
 789                 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 790                 /* some mobos read 0 count */
 791                 if ((count & 0xffffff) || ! viadev->running)
 792                         break;
 793         } while (--timeout);
 794         if (! timeout)
 795                 snd_printd(KERN_ERR "zero position is read\n");
 796         idx = count >> 24;
 797         if (idx >= viadev->tbl_entries) {
 798 #ifdef POINTER_DEBUG
 799                 printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 800 #endif
 801                 res = viadev->lastpos;
 802         } else {
 803                 count &= 0xffffff;
 804                 res = calc_linear_pos(viadev, idx, count);
 805         }
 806         spin_unlock(&chip->reg_lock);
 807
 808         return bytes_to_frames(substream->runtime, res);
 809 }
 810
 811
 812 /*
 813  * hw_params callback:
 814  * allocate the buffer and build up the buffer description table
 815  */
 816 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 817                                  snd_pcm_hw_params_t * hw_params)
 818 {
 819         via82xx_t *chip = snd_pcm_substream_chip(substream);
 820         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 821         int err;
 822
 823         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 824         if (err < 0)
 825                 return err;
 826         err = build_via_table(viadev, substream, chip->pci,
 827                               params_periods(hw_params),
 828                               params_period_bytes(hw_params));
 829         if (err < 0)
 830                 return err;
 831
 832         return 0;
 833 }
 834
 835 /*
 836  * hw_free callback:
 837  * clean up the buffer description table and release the buffer
 838  */
 839 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 840 {
 841         via82xx_t *chip = snd_pcm_substream_chip(substream);
 842         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 843
 844         clean_via_table(viadev, substream, chip->pci);
 845         snd_pcm_lib_free_pages(substream);
 846         return 0;
 847 }
 848
 849
 850 /*
 851  * set up the table pointer
 852  */
 853 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 854 {
 855         snd_via82xx_codec_ready(chip, 0);
 856         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 857         udelay(20);
 858         snd_via82xx_codec_ready(chip, 0);
 859 }
 860
 861 /*
 862  * prepare callback for playback and capture on via686
 863  */
 864 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 865 {
 866         snd_via82xx_channel_reset(chip, viadev);
 867         /* this must be set after channel_reset */
 868         snd_via82xx_set_table_ptr(chip, viadev);
 869         outb(VIA_REG_TYPE_AUTOSTART |
 870              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 871              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 872              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 873              VIA_REG_TYPE_INT_EOL |
 874              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 875 }
 876
 877 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 878 {
 879         via82xx_t *chip = snd_pcm_substream_chip(substream);
 880         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 881         snd_pcm_runtime_t *runtime = substream->runtime;
 882
 883         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 884         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 885         via686_setup_format(chip, viadev, runtime);
 886         return 0;
 887 }
 888
 889 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 890 {
 891         via82xx_t *chip = snd_pcm_substream_chip(substream);
 892         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 893         snd_pcm_runtime_t *runtime = substream->runtime;
 894
 895         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 896         via686_setup_format(chip, viadev, runtime);
 897         return 0;
 898 }
 899
 900 /*
 901  * lock the current rate
 902  */
 903 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 904 {
 905         int changed = 0;
 906
 907         spin_lock_irq(&rec->lock);
 908         if (rec->rate != rate) {
 909                 if (rec->rate && rec->used > 1) /* already set */
 910                         changed = -EINVAL;
 911                 else {
 912                         rec->rate = rate;
 913                         changed = 1;
 914                 }
 915         }
 916         spin_unlock_irq(&rec->lock);
 917         return changed;
 918 }
 919
 920 /*
 921  * prepare callback for DSX playback on via823x
 922  */
 923 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
 924 {
 925         via82xx_t *chip = snd_pcm_substream_chip(substream);
 926         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 927         snd_pcm_runtime_t *runtime = substream->runtime;
 928         int rate_changed;
 929         u32 rbits;
 930
 931         if ((rate_changed = via_lock_rate(&chip->rates[0], runtime->rate)) < 0)
 932                 return rate_changed;
 933         if (rate_changed) {
 934                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
 935                                   chip->no_vra ? 48000 : runtime->rate);
 936                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 937         }
 938         if (runtime->rate == 48000)
 939                 rbits = 0xfffff;
 940         else
 941                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
 942         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
 943         snd_via82xx_channel_reset(chip, viadev);
 944         snd_via82xx_set_table_ptr(chip, viadev);
 945         outb(chip->playback_volume[viadev->reg_offset / 0x10][0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
 946         outb(chip->playback_volume[viadev->reg_offset / 0x10][1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
 947         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 948              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
 949              rbits | /* rate */
 950              0xff000000,    /* STOP index is never reached */
 951              VIADEV_REG(viadev, OFFSET_STOP_IDX));
 952         udelay(20);
 953         snd_via82xx_codec_ready(chip, 0);
 954         return 0;
 955 }
 956
 957 /*
 958  * prepare callback for multi-channel playback on via823x
 959  */
 960 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
 961 {
 962         via82xx_t *chip = snd_pcm_substream_chip(substream);
 963         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 964         snd_pcm_runtime_t *runtime = substream->runtime;
 965         unsigned int slots;
 966         int fmt;
 967
 968         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
 969                 return -EINVAL;
 970         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 971         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
 972         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
 973         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 974         snd_via82xx_channel_reset(chip, viadev);
 975         snd_via82xx_set_table_ptr(chip, viadev);
 976
 977         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
 978         fmt |= runtime->channels << 4;
 979         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
 980 #if 0
 981         if (chip->revision == VIA_REV_8233A)
 982                 slots = 0;
 983         else
 984 #endif
 985         {
 986                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
 987                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
 988                 switch (runtime->channels) {
 989                 case 1: slots = (1<<0) | (1<<4); break;
 990                 case 2: slots = (1<<0) | (2<<4); break;
 991                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
 992                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
 993                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
 994                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
 995                 default: slots = 0; break;
 996                 }
 997         }
 998         /* STOP index is never reached */
 999         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1000         udelay(20);
1001         snd_via82xx_codec_ready(chip, 0);
1002         return 0;
1003 }
1004
1005 /*
1006  * prepare callback for capture on via823x
1007  */
1008 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1009 {
1010         via82xx_t *chip = snd_pcm_substream_chip(substream);
1011         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1012         snd_pcm_runtime_t *runtime = substream->runtime;
1013
1014         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1015                 return -EINVAL;
1016         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1017         snd_via82xx_channel_reset(chip, viadev);
1018         snd_via82xx_set_table_ptr(chip, viadev);
1019         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1020         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1021              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1022              0xff000000,    /* STOP index is never reached */
1023              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1024         udelay(20);
1025         snd_via82xx_codec_ready(chip, 0);
1026         return 0;
1027 }
1028
1029
1030 /*
1031  * pcm hardware definition, identical for both playback and capture
1032  */
1033 static snd_pcm_hardware_t snd_via82xx_hw =
1034 {
1035         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1036                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1037                                  SNDRV_PCM_INFO_MMAP_VALID |
1038                                  SNDRV_PCM_INFO_RESUME |
1039                                  SNDRV_PCM_INFO_PAUSE),
1040         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1041         .rates =                SNDRV_PCM_RATE_48000,
1042         .rate_min =             48000,
1043         .rate_max =             48000,
1044         .channels_min =         1,
1045         .channels_max =         2,
1046         .buffer_bytes_max =     128 * 1024,
1047         .period_bytes_min =     32,
1048         .period_bytes_max =     128 * 1024,
1049         .periods_min =          2,
1050         .periods_max =          VIA_TABLE_SIZE / 2,
1051         .fifo_size =            0,
1052 };
1053
1054
1055 /*
1056  * open callback skeleton
1057  */
1058 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1059 {
1060         snd_pcm_runtime_t *runtime = substream->runtime;
1061         int err;
1062         struct via_rate_lock *ratep;
1063
1064         runtime->hw = snd_via82xx_hw;
1065
1066         /* set the hw rate condition */
1067         ratep = &chip->rates[viadev->direction];
1068         spin_lock_irq(&ratep->lock);
1069         ratep->used++;
1070         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1071                 /* DXS#3 and spdif is on */
1072                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1073                 snd_pcm_limit_hw_rates(runtime);
1074         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1075                 /* fixed DXS playback rate */
1076                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1077                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1078         } else if (! ratep->rate) {
1079                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1080                 runtime->hw.rates = chip->ac97->rates[idx];
1081                 snd_pcm_limit_hw_rates(runtime);
1082         } else {
1083                 /* a fixed rate */
1084                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1085                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1086         }
1087         spin_unlock_irq(&ratep->lock);
1088
1089         /* we may remove following constaint when we modify table entries
1090            in interrupt */
1091         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1092                 return err;
1093
1094         runtime->private_data = viadev;
1095         viadev->substream = substream;
1096
1097         return 0;
1098 }
1099
1100
1101 /*
1102  * open callback for playback on via686 and via823x DSX
1103  */
1104 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1105 {
1106         via82xx_t *chip = snd_pcm_substream_chip(substream);
1107         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1108         int err;
1109
1110         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1111                 return err;
1112         return 0;
1113 }
1114
1115 /*
1116  * open callback for playback on via823x multi-channel
1117  */
1118 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1119 {
1120         via82xx_t *chip = snd_pcm_substream_chip(substream);
1121         viadev_t *viadev = &chip->devs[chip->multi_devno];
1122         int err;
1123         /* channels constraint for VIA8233A
1124          * 3 and 5 channels are not supported
1125          */
1126         static unsigned int channels[] = {
1127                 1, 2, 4, 6
1128         };
1129         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1130                 .count = ARRAY_SIZE(channels),
1131                 .list = channels,
1132                 .mask = 0,
1133         };
1134
1135         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1136                 return err;
1137         substream->runtime->hw.channels_max = 6;
1138         if (chip->revision == VIA_REV_8233A)
1139                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1140         return 0;
1141 }
1142
1143 /*
1144  * open callback for capture on via686 and via823x
1145  */
1146 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1147 {
1148         via82xx_t *chip = snd_pcm_substream_chip(substream);
1149         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1150
1151         return snd_via82xx_pcm_open(chip, viadev, substream);
1152 }
1153
1154 /*
1155  * close callback
1156  */
1157 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1158 {
1159         via82xx_t *chip = snd_pcm_substream_chip(substream);
1160         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1161         struct via_rate_lock *ratep;
1162
1163         /* release the rate lock */
1164         ratep = &chip->rates[viadev->direction];
1165         spin_lock_irq(&ratep->lock);
1166         ratep->used--;
1167         if (! ratep->used)
1168                 ratep->rate = 0;
1169         spin_unlock_irq(&ratep->lock);
1170
1171         viadev->substream = NULL;
1172         return 0;
1173 }
1174
1175
1176 /* via686 playback callbacks */
1177 static snd_pcm_ops_t snd_via686_playback_ops = {
1178         .open =         snd_via82xx_playback_open,
1179         .close =        snd_via82xx_pcm_close,
1180         .ioctl =        snd_pcm_lib_ioctl,
1181         .hw_params =    snd_via82xx_hw_params,
1182         .hw_free =      snd_via82xx_hw_free,
1183         .prepare =      snd_via686_playback_prepare,
1184         .trigger =      snd_via82xx_pcm_trigger,
1185         .pointer =      snd_via686_pcm_pointer,
1186         .page =         snd_pcm_sgbuf_ops_page,
1187 };
1188
1189 /* via686 capture callbacks */
1190 static snd_pcm_ops_t snd_via686_capture_ops = {
1191         .open =         snd_via82xx_capture_open,
1192         .close =        snd_via82xx_pcm_close,
1193         .ioctl =        snd_pcm_lib_ioctl,
1194         .hw_params =    snd_via82xx_hw_params,
1195         .hw_free =      snd_via82xx_hw_free,
1196         .prepare =      snd_via686_capture_prepare,
1197         .trigger =      snd_via82xx_pcm_trigger,
1198         .pointer =      snd_via686_pcm_pointer,
1199         .page =         snd_pcm_sgbuf_ops_page,
1200 };
1201
1202 /* via823x DSX playback callbacks */
1203 static snd_pcm_ops_t snd_via8233_playback_ops = {
1204         .open =         snd_via82xx_playback_open,
1205         .close =        snd_via82xx_pcm_close,
1206         .ioctl =        snd_pcm_lib_ioctl,
1207         .hw_params =    snd_via82xx_hw_params,
1208         .hw_free =      snd_via82xx_hw_free,
1209         .prepare =      snd_via8233_playback_prepare,
1210         .trigger =      snd_via82xx_pcm_trigger,
1211         .pointer =      snd_via8233_pcm_pointer,
1212         .page =         snd_pcm_sgbuf_ops_page,
1213 };
1214
1215 /* via823x multi-channel playback callbacks */
1216 static snd_pcm_ops_t snd_via8233_multi_ops = {
1217         .open =         snd_via8233_multi_open,
1218         .close =        snd_via82xx_pcm_close,
1219         .ioctl =        snd_pcm_lib_ioctl,
1220         .hw_params =    snd_via82xx_hw_params,
1221         .hw_free =      snd_via82xx_hw_free,
1222         .prepare =      snd_via8233_multi_prepare,
1223         .trigger =      snd_via82xx_pcm_trigger,
1224         .pointer =      snd_via8233_pcm_pointer,
1225         .page =         snd_pcm_sgbuf_ops_page,
1226 };
1227
1228 /* via823x capture callbacks */
1229 static snd_pcm_ops_t snd_via8233_capture_ops = {
1230         .open =         snd_via82xx_capture_open,
1231         .close =        snd_via82xx_pcm_close,
1232         .ioctl =        snd_pcm_lib_ioctl,
1233         .hw_params =    snd_via82xx_hw_params,
1234         .hw_free =      snd_via82xx_hw_free,
1235         .prepare =      snd_via8233_capture_prepare,
1236         .trigger =      snd_via82xx_pcm_trigger,
1237         .pointer =      snd_via8233_pcm_pointer,
1238         .page =         snd_pcm_sgbuf_ops_page,
1239 };
1240
1241
1242 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
1243 {
1244         chip->devs[idx].reg_offset = reg_offset;
1245         chip->devs[idx].direction = direction;
1246         chip->devs[idx].port = chip->port + reg_offset;
1247 }
1248
1249 /*
1250  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1251  */
1252 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1253 {
1254         snd_pcm_t *pcm;
1255         int i, err;
1256
1257         chip->playback_devno = 0;       /* x 4 */
1258         chip->multi_devno = 4;          /* x 1 */
1259         chip->capture_devno = 5;        /* x 2 */
1260         chip->num_devs = 7;
1261         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1262
1263         /* PCM #0:  4 DSX playbacks and 1 capture */
1264         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1265         if (err < 0)
1266                 return err;
1267         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1268         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1269         pcm->private_data = chip;
1270         strcpy(pcm->name, chip->card->shortname);
1271         chip->pcms[0] = pcm;
1272         /* set up playbacks */
1273         for (i = 0; i < 4; i++)
1274                 init_viadev(chip, i, 0x10 * i, 0);
1275         /* capture */
1276         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1277
1278         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1279                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1280                 return err;
1281
1282         /* PCM #1:  multi-channel playback and 2nd capture */
1283         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1284         if (err < 0)
1285                 return err;
1286         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1287         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1288         pcm->private_data = chip;
1289         strcpy(pcm->name, chip->card->shortname);
1290         chip->pcms[1] = pcm;
1291         /* set up playback */
1292         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1293         /* set up capture */
1294         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 1);
1295
1296         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1297                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1298                 return err;
1299
1300         return 0;
1301 }
1302
1303 /*
1304  * create pcm instances for VIA8233A
1305  */
1306 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1307 {
1308         snd_pcm_t *pcm;
1309         int err;
1310
1311         chip->multi_devno = 0;
1312         chip->playback_devno = 1;
1313         chip->capture_devno = 2;
1314         chip->num_devs = 3;
1315         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1316
1317         /* PCM #0:  multi-channel playback and capture */
1318         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1319         if (err < 0)
1320                 return err;
1321         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1322         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1323         pcm->private_data = chip;
1324         strcpy(pcm->name, chip->card->shortname);
1325         chip->pcms[0] = pcm;
1326         /* set up playback */
1327         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1328         /* capture */
1329         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1330
1331         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1332                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1333                 return err;
1334
1335         /* SPDIF supported? */
1336         if (! ac97_can_spdif(chip->ac97))
1337                 return 0;
1338
1339         /* PCM #1:  DXS3 playback (for spdif) */
1340         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1341         if (err < 0)
1342                 return err;
1343         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1344         pcm->private_data = chip;
1345         strcpy(pcm->name, chip->card->shortname);
1346         chip->pcms[1] = pcm;
1347         /* set up playback */
1348         init_viadev(chip, chip->playback_devno, 0x30, 0);
1349
1350         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1351                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1352                 return err;
1353
1354         return 0;
1355 }
1356
1357 /*
1358  * create a pcm instance for via686a/b
1359  */
1360 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1361 {
1362         snd_pcm_t *pcm;
1363         int err;
1364
1365         chip->playback_devno = 0;
1366         chip->capture_devno = 1;
1367         chip->num_devs = 2;
1368         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1369
1370         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1371         if (err < 0)
1372                 return err;
1373         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1374         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1375         pcm->private_data = chip;
1376         strcpy(pcm->name, chip->card->shortname);
1377         chip->pcms[0] = pcm;
1378         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0);
1379         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 1);
1380
1381         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1382                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1383                 return err;
1384
1385         return 0;
1386 }
1387
1388
1389 /*
1390  *  Mixer part
1391  */
1392
1393 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1394 {
1395         /* formerly they were "Line" and "Mic", but it looks like that they
1396          * have nothing to do with the actual physical connections...
1397          */
1398         static char *texts[2] = {
1399                 "Input1", "Input2"
1400         };
1401         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1402         uinfo->count = 1;
1403         uinfo->value.enumerated.items = 2;
1404         if (uinfo->value.enumerated.item >= 2)
1405                 uinfo->value.enumerated.item = 1;
1406         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1407         return 0;
1408 }
1409
1410 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1411 {
1412         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1413         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1414         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1415         return 0;
1416 }
1417
1418 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1419 {
1420         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1421         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1422         u8 val, oval;
1423
1424         spin_lock_irq(&chip->reg_lock);
1425         oval = inb(port);
1426         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1427         if (ucontrol->value.enumerated.item[0])
1428                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1429         if (val != oval)
1430                 outb(val, port);
1431         spin_unlock_irq(&chip->reg_lock);
1432         return val != oval;
1433 }
1434
1435 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1436         .name = "Input Source Select",
1437         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1438         .info = snd_via8233_capture_source_info,
1439         .get = snd_via8233_capture_source_get,
1440         .put = snd_via8233_capture_source_put,
1441 };
1442
1443 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1444 {
1445         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1446         uinfo->count = 1;
1447         uinfo->value.integer.min = 0;
1448         uinfo->value.integer.max = 1;
1449         return 0;
1450 }
1451
1452 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1453 {
1454         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1455         u8 val;
1456
1457         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1458         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1459         return 0;
1460 }
1461
1462 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1463 {
1464         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1465         u8 val, oval;
1466
1467         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1468         val = oval & ~VIA8233_SPDIF_DX3;
1469         if (ucontrol->value.integer.value[0])
1470                 val |= VIA8233_SPDIF_DX3;
1471         /* save the spdif flag for rate filtering */
1472         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1473         if (val != oval) {
1474                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1475                 return 1;
1476         }
1477         return 0;
1478 }
1479
1480 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1481         .name = "IEC958 Output Switch",
1482         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1483         .info = snd_via8233_dxs3_spdif_info,
1484         .get = snd_via8233_dxs3_spdif_get,
1485         .put = snd_via8233_dxs3_spdif_put,
1486 };
1487
1488 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1489 {
1490         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1491         uinfo->count = 2;
1492         uinfo->value.integer.min = 0;
1493         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1494         return 0;
1495 }
1496
1497 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1498 {
1499         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1500         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1501         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1502         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1503         return 0;
1504 }
1505
1506 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1507 {
1508         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1509         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1510         unsigned long port = chip->port + 0x10 * idx;
1511         unsigned char val;
1512         int i, change = 0;
1513
1514         for (i = 0; i < 2; i++) {
1515                 val = ucontrol->value.integer.value[i];
1516                 if (val > VIA_DXS_MAX_VOLUME)
1517                         val = VIA_DXS_MAX_VOLUME;
1518                 val = VIA_DXS_MAX_VOLUME - val;
1519                 change |= val != chip->playback_volume[idx][i];
1520                 if (change) {
1521                         chip->playback_volume[idx][i] = val;
1522                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1523                 }
1524         }
1525         return change;
1526 }
1527
1528 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1529         .name = "VIA DXS Playback Volume",
1530         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1531         .count = 4,
1532         .info = snd_via8233_dxs_volume_info,
1533         .get = snd_via8233_dxs_volume_get,
1534         .put = snd_via8233_dxs_volume_put,
1535 };
1536
1537 /*
1538  */
1539
1540 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1541 {
1542         via82xx_t *chip = bus->private_data;
1543         chip->ac97_bus = NULL;
1544 }
1545
1546 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1547 {
1548         via82xx_t *chip = ac97->private_data;
1549         chip->ac97 = NULL;
1550 }
1551
1552 static struct ac97_quirk ac97_quirks[] = {
1553         {
1554                 .vendor = 0x1106,
1555                 .device = 0x4161,
1556                 .codec_id = 0x56494161, /* VT1612A */
1557                 .name = "Soltek SL-75DRV5",
1558                 .type = AC97_TUNE_NONE
1559         },
1560         {       /* FIXME: which codec? */
1561                 .vendor = 0x1106,
1562                 .device = 0x4161,
1563                 .name = "ASRock K7VT2",
1564                 .type = AC97_TUNE_HP_ONLY
1565         },
1566         {
1567                 .vendor = 0x1019,
1568                 .device = 0x0a81,
1569                 .name = "ECS K7VTA3",
1570                 .type = AC97_TUNE_HP_ONLY
1571         },
1572         {
1573                 .vendor = 0x1019,
1574                 .device = 0x0a85,
1575                 .name = "ECS L7VMM2",
1576                 .type = AC97_TUNE_HP_ONLY
1577         },
1578         {
1579                 .vendor = 0x1849,
1580                 .device = 0x3059,
1581                 .name = "ASRock K7VM2",
1582                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1583         },
1584         {
1585                 .vendor = 0x14cd,
1586                 .device = 0x7002,
1587                 .name = "Unknown",
1588                 .type = AC97_TUNE_ALC_JACK
1589         },
1590         {
1591                 .vendor = 0x1071,
1592                 .device = 0x8590,
1593                 .name = "Mitac Mobo",
1594                 .type = AC97_TUNE_ALC_JACK
1595         },
1596         {
1597                 .vendor = 0x161f,
1598                 .device = 0x202b,
1599                 .name = "Arima Notebook",
1600                 .type = AC97_TUNE_HP_ONLY,
1601         },
1602         { } /* terminator */
1603 };
1604
1605 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_override)
1606 {
1607         ac97_template_t ac97;
1608         int err;
1609         static ac97_bus_ops_t ops = {
1610                 .write = snd_via82xx_codec_write,
1611                 .read = snd_via82xx_codec_read,
1612                 .wait = snd_via82xx_codec_wait,
1613         };
1614
1615         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1616                 return err;
1617         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1618         chip->ac97_bus->clock = chip->ac97_clock;
1619         chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
1620
1621         memset(&ac97, 0, sizeof(ac97));
1622         ac97.private_data = chip;
1623         ac97.private_free = snd_via82xx_mixer_free_ac97;
1624         ac97.pci = chip->pci;
1625         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1626                 return err;
1627
1628         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1629
1630         if (chip->chip_type != TYPE_VIA686) {
1631                 /* use slot 10/11 */
1632                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1633         }
1634
1635         return 0;
1636 }
1637
1638 /*
1639  *
1640  */
1641
1642 static int snd_via8233_init_misc(via82xx_t *chip, int dev)
1643 {
1644         int i, err, caps;
1645         unsigned char val;
1646
1647         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1648         for (i = 0; i < caps; i++) {
1649                 snd_via8233_capture_source.index = i;
1650                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1651                 if (err < 0)
1652                         return err;
1653         }
1654         if (ac97_can_spdif(chip->ac97)) {
1655                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1656                 if (err < 0)
1657                         return err;
1658         }
1659         if (chip->chip_type != TYPE_VIA8233A) {
1660                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1661                 if (err < 0)
1662                         return err;
1663         }
1664
1665         /* select spdif data slot 10/11 */
1666         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1667         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1668         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1669         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1670
1671         return 0;
1672 }
1673
1674 static int snd_via686_init_misc(via82xx_t *chip, int dev)
1675 {
1676         unsigned char legacy, legacy_cfg;
1677         int rev_h = 0;
1678
1679         legacy = chip->old_legacy;
1680         legacy_cfg = chip->old_legacy_cfg;
1681         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1682         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1683         if (chip->revision >= VIA_REV_686_H) {
1684                 rev_h = 1;
1685                 if (mpu_port[dev] >= 0x200) {   /* force MIDI */
1686                         mpu_port[dev] &= 0xfffc;
1687                         pci_write_config_dword(chip->pci, 0x18, mpu_port[dev] | 0x01);
1688 #ifdef CONFIG_PM
1689                         chip->mpu_port_saved = mpu_port[dev];
1690 #endif
1691                 } else {
1692                         mpu_port[dev] = pci_resource_start(chip->pci, 2);
1693                 }
1694         } else {
1695                 switch (mpu_port[dev]) {        /* force MIDI */
1696                 case 0x300:
1697                 case 0x310:
1698                 case 0x320:
1699                 case 0x330:
1700                         legacy_cfg &= ~(3 << 2);
1701                         legacy_cfg |= (mpu_port[dev] & 0x0030) >> 2;
1702                         break;
1703                 default:                        /* no, use BIOS settings */
1704                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1705                                 mpu_port[dev] = 0x300 + ((legacy_cfg & 0x000c) << 2);
1706                         break;
1707                 }
1708         }
1709         if (mpu_port[dev] >= 0x200 &&
1710             (chip->mpu_res = request_region(mpu_port[dev], 2, "VIA82xx MPU401")) != NULL) {
1711                 if (rev_h)
1712                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1713                 legacy |= VIA_FUNC_ENABLE_MIDI;
1714         } else {
1715                 if (rev_h)
1716                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1717                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1718                 mpu_port[dev] = 0;
1719         }
1720
1721 #ifdef SUPPORT_JOYSTICK
1722 #define JOYSTICK_ADDR   0x200
1723         if (joystick[dev] &&
1724             (chip->res_joystick = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport")) != NULL) {
1725                 legacy |= VIA_FUNC_ENABLE_GAME;
1726                 chip->gameport.io = JOYSTICK_ADDR;
1727         }
1728 #endif
1729
1730         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1731         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1732         if (chip->mpu_res) {
1733                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1734                                         mpu_port[dev], 1,
1735                                         chip->irq, 0, &chip->rmidi) < 0) {
1736                         printk(KERN_WARNING "unable to initialize MPU-401 at 0x%lx, skipping\n", mpu_port[dev]);
1737                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1738                 } else {
1739                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1740                 }
1741                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1742         }
1743
1744 #ifdef SUPPORT_JOYSTICK
1745         if (chip->res_joystick)
1746                 gameport_register_port(&chip->gameport);
1747 #endif
1748
1749 #ifdef CONFIG_PM
1750         chip->legacy_saved = legacy;
1751         chip->legacy_cfg_saved = legacy_cfg;
1752 #endif
1753
1754         return 0;
1755 }
1756
1757
1758 /*
1759  * proc interface
1760  */
1761 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1762 {
1763         via82xx_t *chip = entry->private_data;
1764         int i;
1765
1766         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1767         for (i = 0; i < 0xa0; i += 4) {
1768                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1769         }
1770 }
1771
1772 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1773 {
1774         snd_info_entry_t *entry;
1775
1776         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1777                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1778 }
1779
1780 /*
1781  *
1782  */
1783
1784 static int __devinit snd_via82xx_chip_init(via82xx_t *chip)
1785 {
1786         ac97_t ac97;
1787         unsigned int val;
1788         int max_count;
1789         unsigned char pval;
1790
1791         memset(&ac97, 0, sizeof(ac97));
1792         ac97.private_data = chip;
1793
1794 #if 0 /* broken on K7M? */
1795         if (chip->chip_type == TYPE_VIA686)
1796                 /* disable all legacy ports */
1797                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1798 #endif
1799         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1800         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1801                 /* deassert ACLink reset, force SYNC */
1802                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1803                                       VIA_ACLINK_CTRL_ENABLE |
1804                                       VIA_ACLINK_CTRL_RESET |
1805                                       VIA_ACLINK_CTRL_SYNC);
1806                 udelay(100);
1807 #if 1 /* FIXME: should we do full reset here for all chip models? */
1808                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
1809                 udelay(100);
1810 #else
1811                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
1812                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1813                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
1814                 udelay(2);
1815 #endif
1816                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1817                 /* note - FM data out has trouble with non VRA codecs !! */
1818                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1819                 udelay(100);
1820         }
1821
1822         /* Make sure VRA is enabled, in case we didn't do a
1823          * complete codec reset, above */
1824         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
1825         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
1826                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1827                 /* note - FM data out has trouble with non VRA codecs !! */
1828                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1829                 udelay(100);
1830         }
1831
1832         /* wait until codec ready */
1833         max_count = ((3 * HZ) / 4) + 1;
1834         do {
1835                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1836                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
1837                         break;
1838                 set_current_state(TASK_UNINTERRUPTIBLE);
1839                 schedule_timeout(1);
1840         } while (--max_count > 0);
1841
1842         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1843                 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
1844
1845         /* and then reset codec.. */
1846         snd_via82xx_codec_ready(chip, 0);
1847         snd_via82xx_codec_write(&ac97, AC97_RESET, 0x0000);
1848         snd_via82xx_codec_read(&ac97, 0);
1849
1850 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
1851         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1852                                  VIA_REG_AC97_SECONDARY_VALID |
1853                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1854         max_count = ((3 * HZ) / 4) + 1;
1855         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1856                                  VIA_REG_AC97_SECONDARY_VALID |
1857                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1858         do {
1859                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1860                         chip->ac97_secondary = 1;
1861                         goto __ac97_ok2;
1862                 }
1863                 set_current_state(TASK_INTERRUPTIBLE);
1864                 schedule_timeout(1);
1865         } while (--max_count > 0);
1866         /* This is ok, the most of motherboards have only one codec */
1867
1868       __ac97_ok2:
1869 #endif
1870
1871         if (chip->chip_type == TYPE_VIA686) {
1872                 /* route FM trap to IRQ, disable FM trap */
1873                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1874                 /* disable all GPI interrupts */
1875                 outl(0, VIAREG(chip, GPI_INTR));
1876         }
1877
1878         if (chip->chip_type != TYPE_VIA686) {
1879                 /* Workaround for Award BIOS bug:
1880                  * DXS channels don't work properly with VRA if MC97 is disabled.
1881                  */
1882                 struct pci_dev *pci;
1883                 pci = pci_find_device(0x1106, 0x3068, NULL); /* MC97 */
1884                 if (pci) {
1885                         unsigned char data;
1886                         pci_read_config_byte(pci, 0x44, &data);
1887                         pci_write_config_byte(pci, 0x44, data | 0x40);
1888                 }
1889         }
1890
1891         return 0;
1892 }
1893
1894 #ifdef CONFIG_PM
1895 /*
1896  * power management
1897  */
1898 static int snd_via82xx_suspend(snd_card_t *card, unsigned int state)
1899 {
1900         via82xx_t *chip = card->pm_private_data;
1901         int i;
1902
1903         for (i = 0; i < 2; i++)
1904                 if (chip->pcms[i])
1905                         snd_pcm_suspend_all(chip->pcms[i]);
1906         for (i = 0; i < chip->num_devs; i++)
1907                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1908         synchronize_irq(chip->irq);
1909         snd_ac97_suspend(chip->ac97);
1910
1911         /* save misc values */
1912         if (chip->chip_type != TYPE_VIA686) {
1913                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
1914                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
1915                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1916         }
1917
1918         pci_set_power_state(chip->pci, 3);
1919         pci_disable_device(chip->pci);
1920         return 0;
1921 }
1922
1923 static int snd_via82xx_resume(snd_card_t *card, unsigned int state)
1924 {
1925         via82xx_t *chip = card->pm_private_data;
1926         int idx, i;
1927
1928         pci_enable_device(chip->pci);
1929         pci_set_power_state(chip->pci, 0);
1930
1931         snd_via82xx_chip_init(chip);
1932
1933         if (chip->chip_type == TYPE_VIA686) {
1934                 if (chip->mpu_port_saved)
1935                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
1936                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
1937                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
1938         } else {
1939                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
1940                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
1941                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1942                 for (idx = 0; idx < 4; idx++) {
1943                         unsigned long port = chip->port + 0x10 * idx;
1944                         for (i = 0; i < 2; i++)
1945                                 outb(chip->playback_volume[idx][i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1946                 }
1947         }
1948
1949         snd_ac97_resume(chip->ac97);
1950
1951         for (i = 0; i < chip->num_devs; i++)
1952                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1953
1954         return 0;
1955 }
1956 #endif /* CONFIG_PM */
1957
1958 static int snd_via82xx_free(via82xx_t *chip)
1959 {
1960         unsigned int i;
1961
1962         if (chip->irq < 0)
1963                 goto __end_hw;
1964         /* disable interrupts */
1965         for (i = 0; i < chip->num_devs; i++)
1966                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1967         synchronize_irq(chip->irq);
1968       __end_hw:
1969         if (chip->irq >= 0)
1970                 free_irq(chip->irq, (void *)chip);
1971         if (chip->mpu_res) {
1972                 release_resource(chip->mpu_res);
1973                 kfree_nocheck(chip->mpu_res);
1974         }
1975         pci_release_regions(chip->pci);
1976         if (chip->chip_type == TYPE_VIA686) {
1977 #ifdef SUPPORT_JOYSTICK
1978                 if (chip->res_joystick) {
1979                         gameport_unregister_port(&chip->gameport);
1980                         release_resource(chip->res_joystick);
1981                         kfree_nocheck(chip->res_joystick);
1982                 }
1983 #endif
1984                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
1985                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
1986         }
1987         pci_disable_device(chip->pci);
1988         kfree(chip);
1989         return 0;
1990 }
1991
1992 static int snd_via82xx_dev_free(snd_device_t *device)
1993 {
1994         via82xx_t *chip = device->device_data;
1995         return snd_via82xx_free(chip);
1996 }
1997
1998 static int __devinit snd_via82xx_create(snd_card_t * card,
1999                                         struct pci_dev *pci,
2000                                         int chip_type,
2001                                         int revision,
2002                                         unsigned int ac97_clock,
2003                                         via82xx_t ** r_via)
2004 {
2005         via82xx_t *chip;
2006         int err;
2007         static snd_device_ops_t ops = {
2008                 .dev_free =     snd_via82xx_dev_free,
2009         };
2010
2011         if ((err = pci_enable_device(pci)) < 0)
2012                 return err;
2013
2014         if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
2015                 pci_disable_device(pci);
2016                 return -ENOMEM;
2017         }
2018
2019         chip->chip_type = chip_type;
2020         chip->revision = revision;
2021
2022         spin_lock_init(&chip->reg_lock);
2023         spin_lock_init(&chip->rates[0].lock);
2024         spin_lock_init(&chip->rates[1].lock);
2025         chip->card = card;
2026         chip->pci = pci;
2027         chip->irq = -1;
2028
2029         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2030         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2031         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2032                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2033
2034         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2035                 kfree(chip);
2036                 pci_disable_device(pci);
2037                 return err;
2038         }
2039         chip->port = pci_resource_start(pci, 0);
2040         if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
2041                         card->driver, (void *)chip)) {
2042                 snd_printk("unable to grab IRQ %d\n", pci->irq);
2043                 snd_via82xx_free(chip);
2044                 return -EBUSY;
2045         }
2046         chip->irq = pci->irq;
2047         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2048                 chip->ac97_clock = ac97_clock;
2049         synchronize_irq(chip->irq);
2050
2051         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2052                 snd_via82xx_free(chip);
2053                 return err;
2054         }
2055
2056         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2057                 snd_via82xx_free(chip);
2058                 return err;
2059         }
2060
2061         /* The 8233 ac97 controller does not implement the master bit
2062          * in the pci command register. IMHO this is a violation of the PCI spec.
2063          * We call pci_set_master here because it does not hurt. */
2064         pci_set_master(pci);
2065
2066         snd_card_set_dev(card, &pci->dev);
2067
2068         *r_via = chip;
2069         return 0;
2070 }
2071
2072 struct via823x_info {
2073         int revision;
2074         char *name;
2075         int type;
2076 };
2077 static struct via823x_info via823x_cards[] __devinitdata = {
2078         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2079         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2080         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2081         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2082         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2083         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2084 };
2085
2086 /*
2087  * auto detection of DXS channel supports.
2088  */
2089 struct dxs_whitelist {
2090         unsigned short vendor;
2091         unsigned short device;
2092         unsigned short mask;
2093         short action;   /* new dxs_support value */
2094 };
2095
2096 static int __devinit check_dxs_list(struct pci_dev *pci)
2097 {
2098         static struct dxs_whitelist whitelist[] = {
2099                 { .vendor = 0x1005, .device = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2100                 { .vendor = 0x1019, .device = 0x0996, .action = VIA_DXS_48K },
2101                 { .vendor = 0x1019, .device = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2102                 { .vendor = 0x1019, .device = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2103                 { .vendor = 0x1025, .device = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2104                 { .vendor = 0x1043, .device = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2105                 { .vendor = 0x1043, .device = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2106                 { .vendor = 0x1043, .device = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2107                 { .vendor = 0x1071, .device = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2108                 { .vendor = 0x10cf, .device = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2109                 { .vendor = 0x1106, .device = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2110                 { .vendor = 0x1106, .device = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2111                 { .vendor = 0x1106, .device = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2112                 { .vendor = 0x1297, .device = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2113                 { .vendor = 0x1297, .device = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2114                 { .vendor = 0x1458, .device = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2115                 { .vendor = 0x1462, .device = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2116                 { .vendor = 0x1462, .device = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2117                 { .vendor = 0x1462, .device = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2118                 { .vendor = 0x147b, .device = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2119                 { .vendor = 0x147b, .device = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2120                 { .vendor = 0x147b, .device = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2121                 { .vendor = 0x147b, .device = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2122                 { .vendor = 0x14ff, .device = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2123                 { .vendor = 0x1584, .device = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2124                 { .vendor = 0x1584, .device = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2125                 { .vendor = 0x161f, .device = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2126                 { .vendor = 0x161f, .device = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2127                 { .vendor = 0x1631, .device = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2128                 { .vendor = 0x1695, .device = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2129                 { .vendor = 0x1849, .device = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2130                 { } /* terminator */
2131         };
2132         struct dxs_whitelist *w;
2133         unsigned short subsystem_vendor;
2134         unsigned short subsystem_device;
2135
2136         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2137         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2138
2139         for (w = whitelist; w->vendor; w++) {
2140                 if (w->vendor != subsystem_vendor)
2141                         continue;
2142                 if (w->mask) {
2143                         if ((w->mask & subsystem_device) == w->device)
2144                                 return w->action;
2145                 } else {
2146                         if (subsystem_device == w->device)
2147                                 return w->action;
2148                 }
2149         }
2150
2151         /*
2152          * not detected, try 48k rate only to be sure.
2153          */
2154         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2155         printk(KERN_INFO "         Please try dxs_support=1 or dxs_support=4 option\n");
2156         printk(KERN_INFO "         and report if it works on your machine.\n");
2157         return VIA_DXS_48K;
2158 };
2159
2160 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2161                                        const struct pci_device_id *pci_id)
2162 {
2163         static int dev;
2164         snd_card_t *card;
2165         via82xx_t *chip;
2166         unsigned char revision;
2167         int chip_type = 0, card_type;
2168         unsigned int i;
2169         int err;
2170
2171         if (dev >= SNDRV_CARDS)
2172                 return -ENODEV;
2173         if (!enable[dev]) {
2174                 dev++;
2175                 return -ENOENT;
2176         }
2177
2178         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
2179         if (card == NULL)
2180                 return -ENOMEM;
2181
2182         card_type = pci_id->driver_data;
2183         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2184         switch (card_type) {
2185         case TYPE_CARD_VIA686:
2186                 strcpy(card->driver, "VIA686A");
2187                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2188                 chip_type = TYPE_VIA686;
2189                 break;
2190         case TYPE_CARD_VIA8233:
2191                 chip_type = TYPE_VIA8233;
2192                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2193                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2194                         if (revision == via823x_cards[i].revision) {
2195                                 chip_type = via823x_cards[i].type;
2196                                 strcpy(card->shortname, via823x_cards[i].name);
2197                                 break;
2198                         }
2199                 }
2200                 if (chip_type != TYPE_VIA8233A) {
2201                         if (dxs_support[dev] == VIA_DXS_AUTO)
2202                                 dxs_support[dev] = check_dxs_list(pci);
2203                         /* force to use VIA8233 or 8233A model according to
2204                          * dxs_support module option
2205                          */
2206                         if (dxs_support[dev] == VIA_DXS_DISABLE)
2207                                 chip_type = TYPE_VIA8233A;
2208                         else
2209                                 chip_type = TYPE_VIA8233;
2210                 }
2211                 if (chip_type == TYPE_VIA8233A)
2212                         strcpy(card->driver, "VIA8233A");
2213                 else if (revision >= VIA_REV_8237)
2214                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2215                 else
2216                         strcpy(card->driver, "VIA8233");
2217                 break;
2218         default:
2219                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2220                 err = -EINVAL;
2221                 goto __error;
2222         }
2223
2224         if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
2225                 goto __error;
2226         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk[dev])) < 0)
2227                 goto __error;
2228
2229         if (chip_type == TYPE_VIA686) {
2230                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2231                     (err = snd_via686_init_misc(chip, dev)) < 0)
2232                         goto __error;
2233         } else {
2234                 if (chip_type == TYPE_VIA8233A) {
2235                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2236                                 goto __error;
2237                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2238                 } else {
2239                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2240                                 goto __error;
2241                         if (dxs_support[dev] == VIA_DXS_48K)
2242                                 chip->dxs_fixed = 1;
2243                         else if (dxs_support[dev] == VIA_DXS_NO_VRA)
2244                                 chip->no_vra = 1;
2245                 }
2246                 if ((err = snd_via8233_init_misc(chip, dev)) < 0)
2247                         goto __error;
2248         }
2249
2250         snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
2251
2252         /* disable interrupts */
2253         for (i = 0; i < chip->num_devs; i++)
2254                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2255
2256         snprintf(card->longname, sizeof(card->longname),
2257                  "%s with %s at %#lx, irq %d", card->shortname,
2258                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2259
2260         snd_via82xx_proc_init(chip);
2261
2262         if ((err = snd_card_register(card)) < 0) {
2263                 snd_card_free(card);
2264                 return err;
2265         }
2266         pci_set_drvdata(pci, card);
2267         dev++;
2268         return 0;
2269
2270  __error:
2271         snd_card_free(card);
2272         return err;
2273 }
2274
2275 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2276 {
2277         snd_card_free(pci_get_drvdata(pci));
2278         pci_set_drvdata(pci, NULL);
2279 }
2280
2281 static struct pci_driver driver = {
2282         .name = "VIA 82xx Audio",
2283         .id_table = snd_via82xx_ids,
2284         .probe = snd_via82xx_probe,
2285         .remove = __devexit_p(snd_via82xx_remove),
2286         SND_PCI_PM_CALLBACKS
2287 };
2288
2289 static int __init alsa_card_via82xx_init(void)
2290 {
2291         return pci_module_init(&driver);
2292 }
2293
2294 static void __exit alsa_card_via82xx_exit(void)
2295 {
2296         pci_unregister_driver(&driver);
2297 }
2298
2299 module_init(alsa_card_via82xx_init)
2300 module_exit(alsa_card_via82xx_exit)