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

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  *
  45  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46  *      - Optimize position calculation for the 823x chips.
  47  */
  48
  49 #include <sound/driver.h>
  50 #include <asm/io.h>
  51 #include <linux/delay.h>
  52 #include <linux/interrupt.h>
  53 #include <linux/init.h>
  54 #include <linux/pci.h>
  55 #include <linux/slab.h>
  56 #include <linux/gameport.h>
  57 #include <linux/moduleparam.h>
  58 #include <sound/core.h>
  59 #include <sound/pcm.h>
  60 #include <sound/pcm_params.h>
  61 #include <sound/info.h>
  62 #include <sound/tlv.h>
  63 #include <sound/ac97_codec.h>
  64 #include <sound/mpu401.h>
  65 #include <sound/initval.h>
  66
  67 #if 0
  68 #define POINTER_DEBUG
  69 #endif
  70
  71 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  72 MODULE_DESCRIPTION("VIA VT82xx audio");
  73 MODULE_LICENSE("GPL");
  74 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  75
  76 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  77 #define SUPPORT_JOYSTICK 1
  78 #endif
  79
  80 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  81 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  82 static long mpu_port;
  83 #ifdef SUPPORT_JOYSTICK
  84 static int joystick;
  85 #endif
  86 static int ac97_clock = 48000;
  87 static char *ac97_quirk;
  88 static int dxs_support;
  89
  90 module_param(index, int, 0444);
  91 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  92 module_param(id, charp, 0444);
  93 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  94 module_param(mpu_port, long, 0444);
  95 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  96 #ifdef SUPPORT_JOYSTICK
  97 module_param(joystick, bool, 0444);
  98 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  99 #endif
 100 module_param(ac97_clock, int, 0444);
 101 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 102 module_param(ac97_quirk, charp, 0444);
 103 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 104 module_param(dxs_support, int, 0444);
 105 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 106
 107 /* just for backward compatibility */
 108 static int enable;
 109 module_param(enable, bool, 0444);
 110
 111
 112 /* revision numbers for via686 */
 113 #define VIA_REV_686_A           0x10
 114 #define VIA_REV_686_B           0x11
 115 #define VIA_REV_686_C           0x12
 116 #define VIA_REV_686_D           0x13
 117 #define VIA_REV_686_E           0x14
 118 #define VIA_REV_686_H           0x20
 119
 120 /* revision numbers for via8233 */
 121 #define VIA_REV_PRE_8233        0x10    /* not in market */
 122 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 123 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 124 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 125 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 126 #define VIA_REV_8237            0x60
 127 #define VIA_REV_8251            0x70
 128
 129 /*
 130  *  Direct registers
 131  */
 132
 133 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 134 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 135
 136 /* common offsets */
 137 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 138 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 139 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 140 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 141 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 142 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 143 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 144 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 145 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 146 #define   VIA_REG_CTRL_START            0x80    /* WO */
 147 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 148 #define   VIA_REG_CTRL_AUTOSTART        0x20
 149 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 150 #define   VIA_REG_CTRL_INT_STOP         0x04
 151 #define   VIA_REG_CTRL_INT_EOL          0x02
 152 #define   VIA_REG_CTRL_INT_FLAG         0x01
 153 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 154 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 155 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 156 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 157 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 158 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 159 #define   VIA_REG_TYPE_INT_LLINE        0x00
 160 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 161 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 162 #define   VIA_REG_TYPE_INT_MASK         0x0c
 163 #define   VIA_REG_TYPE_INT_EOL          0x02
 164 #define   VIA_REG_TYPE_INT_FLAG         0x01
 165 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 166 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 167 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 168 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 169 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 170 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 171 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 172
 173 #define DEFINE_VIA_REGSET(name,val) \
 174 enum {\
 175         VIA_REG_##name##_STATUS         = (val),\
 176         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 177         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 178         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 179         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 180         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 181         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 182 }
 183
 184 /* playback block */
 185 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 186 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 187 DEFINE_VIA_REGSET(FM, 0x20);
 188
 189 /* AC'97 */
 190 #define VIA_REG_AC97                    0x80    /* dword */
 191 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 192 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 193 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 194 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 195 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 196 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 197 #define   VIA_REG_AC97_BUSY             (1<<24)
 198 #define   VIA_REG_AC97_READ             (1<<23)
 199 #define   VIA_REG_AC97_CMD_SHIFT        16
 200 #define   VIA_REG_AC97_CMD_MASK         0x7e
 201 #define   VIA_REG_AC97_DATA_SHIFT       0
 202 #define   VIA_REG_AC97_DATA_MASK        0xffff
 203
 204 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 205 /* via686 */
 206 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 207 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 208 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 209 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 210 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 211 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 212 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 213 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 214 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 215 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 216 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 217 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 218 /* via8233 */
 219 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 220 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 221 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 222 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 223 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 224 #define   VIA8233_REG_SGD_CHAN_SDX      0
 225 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 226 #define   VIA8233_REG_SGD_CHAN_REC      6
 227 #define   VIA8233_REG_SGD_CHAN_REC1     7
 228
 229 #define VIA_REG_GPI_STATUS              0x88
 230 #define VIA_REG_GPI_INTR                0x8c
 231
 232 /* multi-channel and capture registers for via8233 */
 233 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 234 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 235
 236 /* via8233-specific registers */
 237 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 238 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 239 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 240 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 241 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 242 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 243 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 244 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 245
 246 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 247
 248 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 249 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 250 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 251 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 252
 253 #define VIA_TBL_BIT_FLAG        0x40000000
 254 #define VIA_TBL_BIT_EOL         0x80000000
 255
 256 /* pci space */
 257 #define VIA_ACLINK_STAT         0x40
 258 #define  VIA_ACLINK_C11_READY   0x20
 259 #define  VIA_ACLINK_C10_READY   0x10
 260 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 261 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 262 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 263 #define VIA_ACLINK_CTRL         0x41
 264 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 265 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 266 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 267 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 268 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 269 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 270 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 271 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 272 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 273                                  VIA_ACLINK_CTRL_RESET|\
 274                                  VIA_ACLINK_CTRL_PCM|\
 275                                  VIA_ACLINK_CTRL_VRA)
 276 #define VIA_FUNC_ENABLE         0x42
 277 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 278 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 279 #define  VIA_FUNC_RX2C_WRITE    0x20
 280 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 281 #define  VIA_FUNC_ENABLE_GAME   0x08
 282 #define  VIA_FUNC_ENABLE_FM     0x04
 283 #define  VIA_FUNC_ENABLE_MIDI   0x02
 284 #define  VIA_FUNC_ENABLE_SB     0x01
 285 #define VIA_PNP_CONTROL         0x43
 286 #define VIA_FM_NMI_CTRL         0x48
 287 #define VIA8233_VOLCHG_CTRL     0x48
 288 #define VIA8233_SPDIF_CTRL      0x49
 289 #define  VIA8233_SPDIF_DX3      0x08
 290 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 291 #define  VIA8233_SPDIF_SLOT_1011        0x00
 292 #define  VIA8233_SPDIF_SLOT_34          0x01
 293 #define  VIA8233_SPDIF_SLOT_78          0x02
 294 #define  VIA8233_SPDIF_SLOT_69          0x03
 295
 296 /*
 297  */
 298
 299 #define VIA_DXS_AUTO    0
 300 #define VIA_DXS_ENABLE  1
 301 #define VIA_DXS_DISABLE 2
 302 #define VIA_DXS_48K     3
 303 #define VIA_DXS_NO_VRA  4
 304 #define VIA_DXS_SRC     5
 305
 306
 307 /*
 308  * pcm stream
 309  */
 310
 311 struct snd_via_sg_table {
 312         unsigned int offset;
 313         unsigned int size;
 314 } ;
 315
 316 #define VIA_TABLE_SIZE  255
 317
 318 struct viadev {
 319         unsigned int reg_offset;
 320         unsigned long port;
 321         int direction;  /* playback = 0, capture = 1 */
 322         struct snd_pcm_substream *substream;
 323         int running;
 324         unsigned int tbl_entries; /* # descriptors */
 325         struct snd_dma_buffer table;
 326         struct snd_via_sg_table *idx_table;
 327         /* for recovery from the unexpected pointer */
 328         unsigned int lastpos;
 329         unsigned int fragsize;
 330         unsigned int bufsize;
 331         unsigned int bufsize2;
 332         int hwptr_done;         /* processed frame position in the buffer */
 333         int in_interrupt;
 334         int shadow_shift;
 335 };
 336
 337
 338 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 339 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 340
 341 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 342
 343 struct via_rate_lock {
 344         spinlock_t lock;
 345         int rate;
 346         int used;
 347 };
 348
 349 struct via82xx {
 350         int irq;
 351
 352         unsigned long port;
 353         struct resource *mpu_res;
 354         int chip_type;
 355         unsigned char revision;
 356
 357         unsigned char old_legacy;
 358         unsigned char old_legacy_cfg;
 359 #ifdef CONFIG_PM
 360         unsigned char legacy_saved;
 361         unsigned char legacy_cfg_saved;
 362         unsigned char spdif_ctrl_saved;
 363         unsigned char capture_src_saved[2];
 364         unsigned int mpu_port_saved;
 365 #endif
 366
 367         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 368         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 369
 370         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 371
 372         struct pci_dev *pci;
 373         struct snd_card *card;
 374
 375         unsigned int num_devs;
 376         unsigned int playback_devno, multi_devno, capture_devno;
 377         struct viadev devs[VIA_MAX_DEVS];
 378         struct via_rate_lock rates[2]; /* playback and capture */
 379         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 380         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 381         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 382         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 383
 384         struct snd_pcm *pcms[2];
 385         struct snd_rawmidi *rmidi;
 386
 387         struct snd_ac97_bus *ac97_bus;
 388         struct snd_ac97 *ac97;
 389         unsigned int ac97_clock;
 390         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 391
 392         spinlock_t reg_lock;
 393         struct snd_info_entry *proc_entry;
 394
 395 #ifdef SUPPORT_JOYSTICK
 396         struct gameport *gameport;
 397 #endif
 398 };
 399
 400 static struct pci_device_id snd_via82xx_ids[] = {
 401         /* 0x1106, 0x3058 */
 402         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
 403         /* 0x1106, 0x3059 */
 404         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
 405         { 0, }
 406 };
 407
 408 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 409
 410 /*
 411  */
 412
 413 /*
 414  * allocate and initialize the descriptor buffers
 415  * periods = number of periods
 416  * fragsize = period size in bytes
 417  */
 418 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 419                            struct pci_dev *pci,
 420                            unsigned int periods, unsigned int fragsize)
 421 {
 422         unsigned int i, idx, ofs, rest;
 423         struct via82xx *chip = snd_pcm_substream_chip(substream);
 424         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(struct viadev *dev, struct snd_pcm_substream *substream,
 487                            struct pci_dev *pci)
 488 {
 489         if (dev->table.area) {
 490                 snd_dma_free_pages(&dev->table);
 491                 dev->table.area = NULL;
 492         }
 493         kfree(dev->idx_table);
 494         dev->idx_table = NULL;
 495         return 0;
 496 }
 497
 498 /*
 499  *  Basic I/O
 500  */
 501
 502 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 503 {
 504         return inl(VIAREG(chip, AC97));
 505 }
 506
 507 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 508 {
 509         outl(val, VIAREG(chip, AC97));
 510 }
 511
 512 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 513 {
 514         unsigned int timeout = 1000;    /* 1ms */
 515         unsigned int val;
 516
 517         while (timeout-- > 0) {
 518                 udelay(1);
 519                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 520                         return val & 0xffff;
 521         }
 522         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 523                    secondary, snd_via82xx_codec_xread(chip));
 524         return -EIO;
 525 }
 526
 527 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 528 {
 529         unsigned int timeout = 1000;    /* 1ms */
 530         unsigned int val, val1;
 531         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 532                                          VIA_REG_AC97_SECONDARY_VALID;
 533
 534         while (timeout-- > 0) {
 535                 val = snd_via82xx_codec_xread(chip);
 536                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 537                 if (val1 == stat)
 538                         return val & 0xffff;
 539                 udelay(1);
 540         }
 541         return -EIO;
 542 }
 543
 544 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 545 {
 546         struct via82xx *chip = ac97->private_data;
 547         int err;
 548         err = snd_via82xx_codec_ready(chip, ac97->num);
 549         /* here we need to wait fairly for long time.. */
 550         msleep(500);
 551 }
 552
 553 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 554                                     unsigned short reg,
 555                                     unsigned short val)
 556 {
 557         struct via82xx *chip = ac97->private_data;
 558         unsigned int xval;
 559
 560         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 561         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 562         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 563         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 564         snd_via82xx_codec_xwrite(chip, xval);
 565         snd_via82xx_codec_ready(chip, ac97->num);
 566 }
 567
 568 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 569 {
 570         struct via82xx *chip = ac97->private_data;
 571         unsigned int xval, val = 0xffff;
 572         int again = 0;
 573
 574         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 575         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 576         xval |= VIA_REG_AC97_READ;
 577         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 578         while (1) {
 579                 if (again++ > 3) {
 580                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 581                                    ac97->num, snd_via82xx_codec_xread(chip));
 582                         return 0xffff;
 583                 }
 584                 snd_via82xx_codec_xwrite(chip, xval);
 585                 udelay (20);
 586                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 587                         udelay(25);
 588                         val = snd_via82xx_codec_xread(chip);
 589                         break;
 590                 }
 591         }
 592         return val & 0xffff;
 593 }
 594
 595 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 596 {
 597         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 598              VIADEV_REG(viadev, OFFSET_CONTROL));
 599         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 600         udelay(50);
 601         /* disable interrupts */
 602         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 603         /* clear interrupts */
 604         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 605         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 606         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 607         viadev->lastpos = 0;
 608         viadev->hwptr_done = 0;
 609 }
 610
 611
 612 /*
 613  *  Interrupt handler
 614  *  Used for 686 and 8233A
 615  */
 616 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 617 {
 618         struct via82xx *chip = dev_id;
 619         unsigned int status;
 620         unsigned int i;
 621
 622         status = inl(VIAREG(chip, SGD_SHADOW));
 623         if (! (status & chip->intr_mask)) {
 624                 if (chip->rmidi)
 625                         /* check mpu401 interrupt */
 626                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 627                 return IRQ_NONE;
 628         }
 629
 630         /* check status for each stream */
 631         spin_lock(&chip->reg_lock);
 632         for (i = 0; i < chip->num_devs; i++) {
 633                 struct viadev *viadev = &chip->devs[i];
 634                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 635                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 636                         continue;
 637                 if (viadev->substream && viadev->running) {
 638                         /*
 639                          * Update hwptr_done based on 'period elapsed'
 640                          * interrupts. We'll use it, when the chip returns 0
 641                          * for OFFSET_CURR_COUNT.
 642                          */
 643                         if (c_status & VIA_REG_STAT_EOL)
 644                                 viadev->hwptr_done = 0;
 645                         else
 646                                 viadev->hwptr_done += viadev->fragsize;
 647                         viadev->in_interrupt = c_status;
 648                         spin_unlock(&chip->reg_lock);
 649                         snd_pcm_period_elapsed(viadev->substream);
 650                         spin_lock(&chip->reg_lock);
 651                         viadev->in_interrupt = 0;
 652                 }
 653                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 654         }
 655         spin_unlock(&chip->reg_lock);
 656         return IRQ_HANDLED;
 657 }
 658
 659 /*
 660  *  Interrupt handler
 661  */
 662 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 663 {
 664         struct via82xx *chip = dev_id;
 665         unsigned int status;
 666         unsigned int i;
 667         int irqreturn = 0;
 668
 669         /* check status for each stream */
 670         spin_lock(&chip->reg_lock);
 671         status = inl(VIAREG(chip, SGD_SHADOW));
 672
 673         for (i = 0; i < chip->num_devs; i++) {
 674                 struct viadev *viadev = &chip->devs[i];
 675                 struct snd_pcm_substream *substream;
 676                 unsigned char c_status, shadow_status;
 677
 678                 shadow_status = (status >> viadev->shadow_shift) &
 679                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 680                          VIA_REG_STAT_FLAG);
 681                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 682                 if (!c_status)
 683                         continue;
 684
 685                 substream = viadev->substream;
 686                 if (substream && viadev->running) {
 687                         /*
 688                          * Update hwptr_done based on 'period elapsed'
 689                          * interrupts. We'll use it, when the chip returns 0
 690                          * for OFFSET_CURR_COUNT.
 691                          */
 692                         if (c_status & VIA_REG_STAT_EOL)
 693                                 viadev->hwptr_done = 0;
 694                         else
 695                                 viadev->hwptr_done += viadev->fragsize;
 696                         viadev->in_interrupt = c_status;
 697                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 698                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 699                         spin_unlock(&chip->reg_lock);
 700
 701                         snd_pcm_period_elapsed(substream);
 702
 703                         spin_lock(&chip->reg_lock);
 704                         viadev->in_interrupt = 0;
 705                 }
 706                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 707                 irqreturn = 1;
 708         }
 709         spin_unlock(&chip->reg_lock);
 710         return IRQ_RETVAL(irqreturn);
 711 }
 712
 713 /*
 714  *  PCM callbacks
 715  */
 716
 717 /*
 718  * trigger callback
 719  */
 720 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 721 {
 722         struct via82xx *chip = snd_pcm_substream_chip(substream);
 723         struct viadev *viadev = substream->runtime->private_data;
 724         unsigned char val;
 725
 726         if (chip->chip_type != TYPE_VIA686)
 727                 val = VIA_REG_CTRL_INT;
 728         else
 729                 val = 0;
 730         switch (cmd) {
 731         case SNDRV_PCM_TRIGGER_START:
 732         case SNDRV_PCM_TRIGGER_RESUME:
 733                 val |= VIA_REG_CTRL_START;
 734                 viadev->running = 1;
 735                 break;
 736         case SNDRV_PCM_TRIGGER_STOP:
 737         case SNDRV_PCM_TRIGGER_SUSPEND:
 738                 val = VIA_REG_CTRL_TERMINATE;
 739                 viadev->running = 0;
 740                 break;
 741         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 742                 val |= VIA_REG_CTRL_PAUSE;
 743                 viadev->running = 0;
 744                 break;
 745         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 746                 viadev->running = 1;
 747                 break;
 748         default:
 749                 return -EINVAL;
 750         }
 751         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 752         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 753                 snd_via82xx_channel_reset(chip, viadev);
 754         return 0;
 755 }
 756
 757
 758 /*
 759  * pointer callbacks
 760  */
 761
 762 /*
 763  * calculate the linear position at the given sg-buffer index and the rest count
 764  */
 765
 766 #define check_invalid_pos(viadev,pos) \
 767         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 768                                      viadev->lastpos < viadev->bufsize2))
 769
 770 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 771                                            unsigned int count)
 772 {
 773         unsigned int size, base, res;
 774
 775         size = viadev->idx_table[idx].size;
 776         base = viadev->idx_table[idx].offset;
 777         res = base + size - count;
 778         if (res >= viadev->bufsize)
 779                 res -= viadev->bufsize;
 780
 781         /* check the validity of the calculated position */
 782         if (size < count) {
 783                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 784                            (int)size, (int)count);
 785                 res = viadev->lastpos;
 786         } else {
 787                 if (! count) {
 788                         /* Some mobos report count = 0 on the DMA boundary,
 789                          * i.e. count = size indeed.
 790                          * Let's check whether this step is above the expected size.
 791                          */
 792                         int delta = res - viadev->lastpos;
 793                         if (delta < 0)
 794                                 delta += viadev->bufsize;
 795                         if ((unsigned int)delta > viadev->fragsize)
 796                                 res = base;
 797                 }
 798                 if (check_invalid_pos(viadev, res)) {
 799 #ifdef POINTER_DEBUG
 800                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 801                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 802                                "count = 0x%x\n", idx, viadev->tbl_entries,
 803                                viadev->lastpos, viadev->bufsize2,
 804                                viadev->idx_table[idx].offset,
 805                                viadev->idx_table[idx].size, count);
 806 #endif
 807                         /* count register returns full size when end of buffer is reached */
 808                         res = base + size;
 809                         if (check_invalid_pos(viadev, res)) {
 810                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 811                                            "using last valid pointer\n");
 812                                 res = viadev->lastpos;
 813                         }
 814                 }
 815         }
 816         return res;
 817 }
 818
 819 /*
 820  * get the current pointer on via686
 821  */
 822 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 823 {
 824         struct via82xx *chip = snd_pcm_substream_chip(substream);
 825         struct viadev *viadev = substream->runtime->private_data;
 826         unsigned int idx, ptr, count, res;
 827
 828         snd_assert(viadev->tbl_entries, return 0);
 829         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 830                 return 0;
 831
 832         spin_lock(&chip->reg_lock);
 833         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 834         /* The via686a does not have the current index register,
 835          * so we need to calculate the index from CURR_PTR.
 836          */
 837         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 838         if (ptr <= (unsigned int)viadev->table.addr)
 839                 idx = 0;
 840         else /* CURR_PTR holds the address + 8 */
 841                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 842         res = calc_linear_pos(viadev, idx, count);
 843         viadev->lastpos = res; /* remember the last position */
 844         spin_unlock(&chip->reg_lock);
 845
 846         return bytes_to_frames(substream->runtime, res);
 847 }
 848
 849 /*
 850  * get the current pointer on via823x
 851  */
 852 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 853 {
 854         struct via82xx *chip = snd_pcm_substream_chip(substream);
 855         struct viadev *viadev = substream->runtime->private_data;
 856         unsigned int idx, count, res;
 857         int status;
 858
 859         snd_assert(viadev->tbl_entries, return 0);
 860
 861         spin_lock(&chip->reg_lock);
 862         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 863         status = viadev->in_interrupt;
 864         if (!status)
 865                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 866
 867         /* An apparent bug in the 8251 is worked around by sending a
 868          * REG_CTRL_START. */
 869         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 870                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 871
 872         if (!(status & VIA_REG_STAT_ACTIVE)) {
 873                 res = 0;
 874                 goto unlock;
 875         }
 876         if (count & 0xffffff) {
 877                 idx = count >> 24;
 878                 if (idx >= viadev->tbl_entries) {
 879 #ifdef POINTER_DEBUG
 880                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 881                                viadev->tbl_entries);
 882 #endif
 883                         res = viadev->lastpos;
 884                 } else {
 885                         count &= 0xffffff;
 886                         res = calc_linear_pos(viadev, idx, count);
 887                 }
 888         } else {
 889                 res = viadev->hwptr_done;
 890                 if (!viadev->in_interrupt) {
 891                         if (status & VIA_REG_STAT_EOL) {
 892                                 res = 0;
 893                         } else
 894                                 if (status & VIA_REG_STAT_FLAG) {
 895                                         res += viadev->fragsize;
 896                                 }
 897                 }
 898         }
 899 unlock:
 900         viadev->lastpos = res;
 901         spin_unlock(&chip->reg_lock);
 902
 903         return bytes_to_frames(substream->runtime, res);
 904 }
 905
 906
 907 /*
 908  * hw_params callback:
 909  * allocate the buffer and build up the buffer description table
 910  */
 911 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 912                                  struct snd_pcm_hw_params *hw_params)
 913 {
 914         struct via82xx *chip = snd_pcm_substream_chip(substream);
 915         struct viadev *viadev = substream->runtime->private_data;
 916         int err;
 917
 918         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 919         if (err < 0)
 920                 return err;
 921         err = build_via_table(viadev, substream, chip->pci,
 922                               params_periods(hw_params),
 923                               params_period_bytes(hw_params));
 924         if (err < 0)
 925                 return err;
 926
 927         return 0;
 928 }
 929
 930 /*
 931  * hw_free callback:
 932  * clean up the buffer description table and release the buffer
 933  */
 934 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 935 {
 936         struct via82xx *chip = snd_pcm_substream_chip(substream);
 937         struct viadev *viadev = substream->runtime->private_data;
 938
 939         clean_via_table(viadev, substream, chip->pci);
 940         snd_pcm_lib_free_pages(substream);
 941         return 0;
 942 }
 943
 944
 945 /*
 946  * set up the table pointer
 947  */
 948 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 949 {
 950         snd_via82xx_codec_ready(chip, 0);
 951         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 952         udelay(20);
 953         snd_via82xx_codec_ready(chip, 0);
 954 }
 955
 956 /*
 957  * prepare callback for playback and capture on via686
 958  */
 959 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 960                                 struct snd_pcm_runtime *runtime)
 961 {
 962         snd_via82xx_channel_reset(chip, viadev);
 963         /* this must be set after channel_reset */
 964         snd_via82xx_set_table_ptr(chip, viadev);
 965         outb(VIA_REG_TYPE_AUTOSTART |
 966              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 967              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 968              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 969              VIA_REG_TYPE_INT_EOL |
 970              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 971 }
 972
 973 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 974 {
 975         struct via82xx *chip = snd_pcm_substream_chip(substream);
 976         struct viadev *viadev = substream->runtime->private_data;
 977         struct snd_pcm_runtime *runtime = substream->runtime;
 978
 979         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 980         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 981         via686_setup_format(chip, viadev, runtime);
 982         return 0;
 983 }
 984
 985 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 986 {
 987         struct via82xx *chip = snd_pcm_substream_chip(substream);
 988         struct viadev *viadev = substream->runtime->private_data;
 989         struct snd_pcm_runtime *runtime = substream->runtime;
 990
 991         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 992         via686_setup_format(chip, viadev, runtime);
 993         return 0;
 994 }
 995
 996 /*
 997  * lock the current rate
 998  */
 999 static int via_lock_rate(struct via_rate_lock *rec, int rate)
1000 {
1001         int changed = 0;
1002
1003         spin_lock_irq(&rec->lock);
1004         if (rec->rate != rate) {
1005                 if (rec->rate && rec->used > 1) /* already set */
1006                         changed = -EINVAL;
1007                 else {
1008                         rec->rate = rate;
1009                         changed = 1;
1010                 }
1011         }
1012         spin_unlock_irq(&rec->lock);
1013         return changed;
1014 }
1015
1016 /*
1017  * prepare callback for DSX playback on via823x
1018  */
1019 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1020 {
1021         struct via82xx *chip = snd_pcm_substream_chip(substream);
1022         struct viadev *viadev = substream->runtime->private_data;
1023         struct snd_pcm_runtime *runtime = substream->runtime;
1024         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1025         int rate_changed;
1026         u32 rbits;
1027
1028         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1029                 return rate_changed;
1030         if (rate_changed)
1031                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1032                                   chip->no_vra ? 48000 : runtime->rate);
1033         if (chip->spdif_on && viadev->reg_offset == 0x30)
1034                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1035
1036         if (runtime->rate == 48000)
1037                 rbits = 0xfffff;
1038         else
1039                 rbits = (0x100000 / 48000) * runtime->rate +
1040                         ((0x100000 % 48000) * runtime->rate) / 48000;
1041         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
1042         snd_via82xx_channel_reset(chip, viadev);
1043         snd_via82xx_set_table_ptr(chip, viadev);
1044         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1045              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1046         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1047              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1048         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1049              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1050              rbits | /* rate */
1051              0xff000000,    /* STOP index is never reached */
1052              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1053         udelay(20);
1054         snd_via82xx_codec_ready(chip, 0);
1055         return 0;
1056 }
1057
1058 /*
1059  * prepare callback for multi-channel playback on via823x
1060  */
1061 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1062 {
1063         struct via82xx *chip = snd_pcm_substream_chip(substream);
1064         struct viadev *viadev = substream->runtime->private_data;
1065         struct snd_pcm_runtime *runtime = substream->runtime;
1066         unsigned int slots;
1067         int fmt;
1068
1069         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1070                 return -EINVAL;
1071         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1072         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1073         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1074         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1075         snd_via82xx_channel_reset(chip, viadev);
1076         snd_via82xx_set_table_ptr(chip, viadev);
1077
1078         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1079                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1080         fmt |= runtime->channels << 4;
1081         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1082 #if 0
1083         if (chip->revision == VIA_REV_8233A)
1084                 slots = 0;
1085         else
1086 #endif
1087         {
1088                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1089                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1090                 switch (runtime->channels) {
1091                 case 1: slots = (1<<0) | (1<<4); break;
1092                 case 2: slots = (1<<0) | (2<<4); break;
1093                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1094                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1095                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1096                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1097                 default: slots = 0; break;
1098                 }
1099         }
1100         /* STOP index is never reached */
1101         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1102         udelay(20);
1103         snd_via82xx_codec_ready(chip, 0);
1104         return 0;
1105 }
1106
1107 /*
1108  * prepare callback for capture on via823x
1109  */
1110 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1111 {
1112         struct via82xx *chip = snd_pcm_substream_chip(substream);
1113         struct viadev *viadev = substream->runtime->private_data;
1114         struct snd_pcm_runtime *runtime = substream->runtime;
1115
1116         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1117                 return -EINVAL;
1118         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1119         snd_via82xx_channel_reset(chip, viadev);
1120         snd_via82xx_set_table_ptr(chip, viadev);
1121         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1122         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1123              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1124              0xff000000,    /* STOP index is never reached */
1125              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1126         udelay(20);
1127         snd_via82xx_codec_ready(chip, 0);
1128         return 0;
1129 }
1130
1131
1132 /*
1133  * pcm hardware definition, identical for both playback and capture
1134  */
1135 static struct snd_pcm_hardware snd_via82xx_hw =
1136 {
1137         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1138                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1139                                  SNDRV_PCM_INFO_MMAP_VALID |
1140                                  /* SNDRV_PCM_INFO_RESUME | */
1141                                  SNDRV_PCM_INFO_PAUSE),
1142         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1143         .rates =                SNDRV_PCM_RATE_48000,
1144         .rate_min =             48000,
1145         .rate_max =             48000,
1146         .channels_min =         1,
1147         .channels_max =         2,
1148         .buffer_bytes_max =     128 * 1024,
1149         .period_bytes_min =     32,
1150         .period_bytes_max =     128 * 1024,
1151         .periods_min =          2,
1152         .periods_max =          VIA_TABLE_SIZE / 2,
1153         .fifo_size =            0,
1154 };
1155
1156
1157 /*
1158  * open callback skeleton
1159  */
1160 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1161                                 struct snd_pcm_substream *substream)
1162 {
1163         struct snd_pcm_runtime *runtime = substream->runtime;
1164         int err;
1165         struct via_rate_lock *ratep;
1166
1167         runtime->hw = snd_via82xx_hw;
1168
1169         /* set the hw rate condition */
1170         ratep = &chip->rates[viadev->direction];
1171         spin_lock_irq(&ratep->lock);
1172         ratep->used++;
1173         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1174                 /* DXS#3 and spdif is on */
1175                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1176                 snd_pcm_limit_hw_rates(runtime);
1177         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1178                 /* fixed DXS playback rate */
1179                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1180                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1181         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1182                 /* use full SRC capabilities of DXS */
1183                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1184                                      SNDRV_PCM_RATE_8000_48000);
1185                 runtime->hw.rate_min = 8000;
1186                 runtime->hw.rate_max = 48000;
1187         } else if (! ratep->rate) {
1188                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1189                 runtime->hw.rates = chip->ac97->rates[idx];
1190                 snd_pcm_limit_hw_rates(runtime);
1191         } else {
1192                 /* a fixed rate */
1193                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1194                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1195         }
1196         spin_unlock_irq(&ratep->lock);
1197
1198         /* we may remove following constaint when we modify table entries
1199            in interrupt */
1200         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1201                 return err;
1202
1203         runtime->private_data = viadev;
1204         viadev->substream = substream;
1205
1206         return 0;
1207 }
1208
1209
1210 /*
1211  * open callback for playback on via686 and via823x DSX
1212  */
1213 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1214 {
1215         struct via82xx *chip = snd_pcm_substream_chip(substream);
1216         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1217         int err;
1218
1219         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1220                 return err;
1221         return 0;
1222 }
1223
1224 /*
1225  * open callback for playback on via823x multi-channel
1226  */
1227 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1228 {
1229         struct via82xx *chip = snd_pcm_substream_chip(substream);
1230         struct viadev *viadev = &chip->devs[chip->multi_devno];
1231         int err;
1232         /* channels constraint for VIA8233A
1233          * 3 and 5 channels are not supported
1234          */
1235         static unsigned int channels[] = {
1236                 1, 2, 4, 6
1237         };
1238         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1239                 .count = ARRAY_SIZE(channels),
1240                 .list = channels,
1241                 .mask = 0,
1242         };
1243
1244         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1245                 return err;
1246         substream->runtime->hw.channels_max = 6;
1247         if (chip->revision == VIA_REV_8233A)
1248                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1249                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1250                                            &hw_constraints_channels);
1251         return 0;
1252 }
1253
1254 /*
1255  * open callback for capture on via686 and via823x
1256  */
1257 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1258 {
1259         struct via82xx *chip = snd_pcm_substream_chip(substream);
1260         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1261
1262         return snd_via82xx_pcm_open(chip, viadev, substream);
1263 }
1264
1265 /*
1266  * close callback
1267  */
1268 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1269 {
1270         struct via82xx *chip = snd_pcm_substream_chip(substream);
1271         struct viadev *viadev = substream->runtime->private_data;
1272         struct via_rate_lock *ratep;
1273
1274         /* release the rate lock */
1275         ratep = &chip->rates[viadev->direction];
1276         spin_lock_irq(&ratep->lock);
1277         ratep->used--;
1278         if (! ratep->used)
1279                 ratep->rate = 0;
1280         spin_unlock_irq(&ratep->lock);
1281         if (! ratep->rate) {
1282                 if (! viadev->direction) {
1283                         snd_ac97_update_power(chip->ac97,
1284                                               AC97_PCM_FRONT_DAC_RATE, 0);
1285                         snd_ac97_update_power(chip->ac97,
1286                                               AC97_PCM_SURR_DAC_RATE, 0);
1287                         snd_ac97_update_power(chip->ac97,
1288                                               AC97_PCM_LFE_DAC_RATE, 0);
1289                 } else
1290                         snd_ac97_update_power(chip->ac97,
1291                                               AC97_PCM_LR_ADC_RATE, 0);
1292         }
1293         viadev->substream = NULL;
1294         return 0;
1295 }
1296
1297
1298 /* via686 playback callbacks */
1299 static struct snd_pcm_ops snd_via686_playback_ops = {
1300         .open =         snd_via82xx_playback_open,
1301         .close =        snd_via82xx_pcm_close,
1302         .ioctl =        snd_pcm_lib_ioctl,
1303         .hw_params =    snd_via82xx_hw_params,
1304         .hw_free =      snd_via82xx_hw_free,
1305         .prepare =      snd_via686_playback_prepare,
1306         .trigger =      snd_via82xx_pcm_trigger,
1307         .pointer =      snd_via686_pcm_pointer,
1308         .page =         snd_pcm_sgbuf_ops_page,
1309 };
1310
1311 /* via686 capture callbacks */
1312 static struct snd_pcm_ops snd_via686_capture_ops = {
1313         .open =         snd_via82xx_capture_open,
1314         .close =        snd_via82xx_pcm_close,
1315         .ioctl =        snd_pcm_lib_ioctl,
1316         .hw_params =    snd_via82xx_hw_params,
1317         .hw_free =      snd_via82xx_hw_free,
1318         .prepare =      snd_via686_capture_prepare,
1319         .trigger =      snd_via82xx_pcm_trigger,
1320         .pointer =      snd_via686_pcm_pointer,
1321         .page =         snd_pcm_sgbuf_ops_page,
1322 };
1323
1324 /* via823x DSX playback callbacks */
1325 static struct snd_pcm_ops snd_via8233_playback_ops = {
1326         .open =         snd_via82xx_playback_open,
1327         .close =        snd_via82xx_pcm_close,
1328         .ioctl =        snd_pcm_lib_ioctl,
1329         .hw_params =    snd_via82xx_hw_params,
1330         .hw_free =      snd_via82xx_hw_free,
1331         .prepare =      snd_via8233_playback_prepare,
1332         .trigger =      snd_via82xx_pcm_trigger,
1333         .pointer =      snd_via8233_pcm_pointer,
1334         .page =         snd_pcm_sgbuf_ops_page,
1335 };
1336
1337 /* via823x multi-channel playback callbacks */
1338 static struct snd_pcm_ops snd_via8233_multi_ops = {
1339         .open =         snd_via8233_multi_open,
1340         .close =        snd_via82xx_pcm_close,
1341         .ioctl =        snd_pcm_lib_ioctl,
1342         .hw_params =    snd_via82xx_hw_params,
1343         .hw_free =      snd_via82xx_hw_free,
1344         .prepare =      snd_via8233_multi_prepare,
1345         .trigger =      snd_via82xx_pcm_trigger,
1346         .pointer =      snd_via8233_pcm_pointer,
1347         .page =         snd_pcm_sgbuf_ops_page,
1348 };
1349
1350 /* via823x capture callbacks */
1351 static struct snd_pcm_ops snd_via8233_capture_ops = {
1352         .open =         snd_via82xx_capture_open,
1353         .close =        snd_via82xx_pcm_close,
1354         .ioctl =        snd_pcm_lib_ioctl,
1355         .hw_params =    snd_via82xx_hw_params,
1356         .hw_free =      snd_via82xx_hw_free,
1357         .prepare =      snd_via8233_capture_prepare,
1358         .trigger =      snd_via82xx_pcm_trigger,
1359         .pointer =      snd_via8233_pcm_pointer,
1360         .page =         snd_pcm_sgbuf_ops_page,
1361 };
1362
1363
1364 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1365                         int shadow_pos, int direction)
1366 {
1367         chip->devs[idx].reg_offset = reg_offset;
1368         chip->devs[idx].shadow_shift = shadow_pos * 4;
1369         chip->devs[idx].direction = direction;
1370         chip->devs[idx].port = chip->port + reg_offset;
1371 }
1372
1373 /*
1374  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1375  */
1376 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1377 {
1378         struct snd_pcm *pcm;
1379         int i, err;
1380
1381         chip->playback_devno = 0;       /* x 4 */
1382         chip->multi_devno = 4;          /* x 1 */
1383         chip->capture_devno = 5;        /* x 2 */
1384         chip->num_devs = 7;
1385         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1386
1387         /* PCM #0:  4 DSX playbacks and 1 capture */
1388         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1389         if (err < 0)
1390                 return err;
1391         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1392         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1393         pcm->private_data = chip;
1394         strcpy(pcm->name, chip->card->shortname);
1395         chip->pcms[0] = pcm;
1396         /* set up playbacks */
1397         for (i = 0; i < 4; i++)
1398                 init_viadev(chip, i, 0x10 * i, i, 0);
1399         /* capture */
1400         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1401
1402         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1403                                                          snd_dma_pci_data(chip->pci),
1404                                                          64*1024, 128*1024)) < 0)
1405                 return err;
1406
1407         /* PCM #1:  multi-channel playback and 2nd capture */
1408         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1409         if (err < 0)
1410                 return err;
1411         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1412         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1413         pcm->private_data = chip;
1414         strcpy(pcm->name, chip->card->shortname);
1415         chip->pcms[1] = pcm;
1416         /* set up playback */
1417         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1418         /* set up capture */
1419         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1420
1421         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1422                                                          snd_dma_pci_data(chip->pci),
1423                                                          64*1024, 128*1024)) < 0)
1424                 return err;
1425
1426         return 0;
1427 }
1428
1429 /*
1430  * create pcm instances for VIA8233A
1431  */
1432 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1433 {
1434         struct snd_pcm *pcm;
1435         int err;
1436
1437         chip->multi_devno = 0;
1438         chip->playback_devno = 1;
1439         chip->capture_devno = 2;
1440         chip->num_devs = 3;
1441         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1442
1443         /* PCM #0:  multi-channel playback and capture */
1444         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1445         if (err < 0)
1446                 return err;
1447         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1448         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1449         pcm->private_data = chip;
1450         strcpy(pcm->name, chip->card->shortname);
1451         chip->pcms[0] = pcm;
1452         /* set up playback */
1453         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1454         /* capture */
1455         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1456
1457         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1458                                                          snd_dma_pci_data(chip->pci),
1459                                                          64*1024, 128*1024)) < 0)
1460                 return err;
1461
1462         /* SPDIF supported? */
1463         if (! ac97_can_spdif(chip->ac97))
1464                 return 0;
1465
1466         /* PCM #1:  DXS3 playback (for spdif) */
1467         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1468         if (err < 0)
1469                 return err;
1470         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1471         pcm->private_data = chip;
1472         strcpy(pcm->name, chip->card->shortname);
1473         chip->pcms[1] = pcm;
1474         /* set up playback */
1475         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1476
1477         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1478                                                          snd_dma_pci_data(chip->pci),
1479                                                          64*1024, 128*1024)) < 0)
1480                 return err;
1481
1482         return 0;
1483 }
1484
1485 /*
1486  * create a pcm instance for via686a/b
1487  */
1488 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1489 {
1490         struct snd_pcm *pcm;
1491         int err;
1492
1493         chip->playback_devno = 0;
1494         chip->capture_devno = 1;
1495         chip->num_devs = 2;
1496         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1497
1498         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1499         if (err < 0)
1500                 return err;
1501         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1502         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1503         pcm->private_data = chip;
1504         strcpy(pcm->name, chip->card->shortname);
1505         chip->pcms[0] = pcm;
1506         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1507         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1508
1509         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1510                                                          snd_dma_pci_data(chip->pci),
1511                                                          64*1024, 128*1024)) < 0)
1512                 return err;
1513
1514         return 0;
1515 }
1516
1517
1518 /*
1519  *  Mixer part
1520  */
1521
1522 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1523                                            struct snd_ctl_elem_info *uinfo)
1524 {
1525         /* formerly they were "Line" and "Mic", but it looks like that they
1526          * have nothing to do with the actual physical connections...
1527          */
1528         static char *texts[2] = {
1529                 "Input1", "Input2"
1530         };
1531         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1532         uinfo->count = 1;
1533         uinfo->value.enumerated.items = 2;
1534         if (uinfo->value.enumerated.item >= 2)
1535                 uinfo->value.enumerated.item = 1;
1536         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1537         return 0;
1538 }
1539
1540 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1541                                           struct snd_ctl_elem_value *ucontrol)
1542 {
1543         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1544         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1545         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1546         return 0;
1547 }
1548
1549 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1550                                           struct snd_ctl_elem_value *ucontrol)
1551 {
1552         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1553         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1554         u8 val, oval;
1555
1556         spin_lock_irq(&chip->reg_lock);
1557         oval = inb(port);
1558         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1559         if (ucontrol->value.enumerated.item[0])
1560                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1561         if (val != oval)
1562                 outb(val, port);
1563         spin_unlock_irq(&chip->reg_lock);
1564         return val != oval;
1565 }
1566
1567 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1568         .name = "Input Source Select",
1569         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1570         .info = snd_via8233_capture_source_info,
1571         .get = snd_via8233_capture_source_get,
1572         .put = snd_via8233_capture_source_put,
1573 };
1574
1575 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1576
1577 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1578                                       struct snd_ctl_elem_value *ucontrol)
1579 {
1580         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1581         u8 val;
1582
1583         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1584         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1585         return 0;
1586 }
1587
1588 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1589                                       struct snd_ctl_elem_value *ucontrol)
1590 {
1591         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1592         u8 val, oval;
1593
1594         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1595         val = oval & ~VIA8233_SPDIF_DX3;
1596         if (ucontrol->value.integer.value[0])
1597                 val |= VIA8233_SPDIF_DX3;
1598         /* save the spdif flag for rate filtering */
1599         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1600         if (val != oval) {
1601                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1602                 return 1;
1603         }
1604         return 0;
1605 }
1606
1607 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1608         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1609         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1610         .info = snd_via8233_dxs3_spdif_info,
1611         .get = snd_via8233_dxs3_spdif_get,
1612         .put = snd_via8233_dxs3_spdif_put,
1613 };
1614
1615 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1616                                        struct snd_ctl_elem_info *uinfo)
1617 {
1618         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1619         uinfo->count = 2;
1620         uinfo->value.integer.min = 0;
1621         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1622         return 0;
1623 }
1624
1625 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1626                                       struct snd_ctl_elem_value *ucontrol)
1627 {
1628         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1629         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1630
1631         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1632         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1633         return 0;
1634 }
1635
1636 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1637                                          struct snd_ctl_elem_value *ucontrol)
1638 {
1639         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1640         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1641         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1642         return 0;
1643 }
1644
1645 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1646                                       struct snd_ctl_elem_value *ucontrol)
1647 {
1648         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1649         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1650         unsigned long port = chip->port + 0x10 * idx;
1651         unsigned char val;
1652         int i, change = 0;
1653
1654         for (i = 0; i < 2; i++) {
1655                 val = ucontrol->value.integer.value[i];
1656                 if (val > VIA_DXS_MAX_VOLUME)
1657                         val = VIA_DXS_MAX_VOLUME;
1658                 val = VIA_DXS_MAX_VOLUME - val;
1659                 change |= val != chip->playback_volume[idx][i];
1660                 if (change) {
1661                         chip->playback_volume[idx][i] = val;
1662                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1663                 }
1664         }
1665         return change;
1666 }
1667
1668 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1669                                          struct snd_ctl_elem_value *ucontrol)
1670 {
1671         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1672         unsigned int idx;
1673         unsigned char val;
1674         int i, change = 0;
1675
1676         for (i = 0; i < 2; i++) {
1677                 val = ucontrol->value.integer.value[i];
1678                 if (val > VIA_DXS_MAX_VOLUME)
1679                         val = VIA_DXS_MAX_VOLUME;
1680                 val = VIA_DXS_MAX_VOLUME - val;
1681                 if (val != chip->playback_volume_c[i]) {
1682                         change = 1;
1683                         chip->playback_volume_c[i] = val;
1684                         for (idx = 0; idx < 4; idx++) {
1685                                 unsigned long port = chip->port + 0x10 * idx;
1686                                 chip->playback_volume[idx][i] = val;
1687                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1688                         }
1689                 }
1690         }
1691         return change;
1692 }
1693
1694 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -9450, 150, 1);
1695
1696 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1697         .name = "PCM Playback Volume",
1698         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1699         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1700                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1701         .info = snd_via8233_dxs_volume_info,
1702         .get = snd_via8233_pcmdxs_volume_get,
1703         .put = snd_via8233_pcmdxs_volume_put,
1704         .tlv = { .p = db_scale_dxs }
1705 };
1706
1707 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1708         .name = "VIA DXS Playback Volume",
1709         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1710         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1711                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1712         .count = 4,
1713         .info = snd_via8233_dxs_volume_info,
1714         .get = snd_via8233_dxs_volume_get,
1715         .put = snd_via8233_dxs_volume_put,
1716         .tlv = { .p = db_scale_dxs }
1717 };
1718
1719 /*
1720  */
1721
1722 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1723 {
1724         struct via82xx *chip = bus->private_data;
1725         chip->ac97_bus = NULL;
1726 }
1727
1728 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1729 {
1730         struct via82xx *chip = ac97->private_data;
1731         chip->ac97 = NULL;
1732 }
1733
1734 static struct ac97_quirk ac97_quirks[] = {
1735         {
1736                 .subvendor = 0x1106,
1737                 .subdevice = 0x4161,
1738                 .codec_id = 0x56494161, /* VT1612A */
1739                 .name = "Soltek SL-75DRV5",
1740                 .type = AC97_TUNE_NONE
1741         },
1742         {       /* FIXME: which codec? */
1743                 .subvendor = 0x1106,
1744                 .subdevice = 0x4161,
1745                 .name = "ASRock K7VT2",
1746                 .type = AC97_TUNE_HP_ONLY
1747         },
1748         {
1749                 .subvendor = 0x1019,
1750                 .subdevice = 0x0a81,
1751                 .name = "ECS K7VTA3",
1752                 .type = AC97_TUNE_HP_ONLY
1753         },
1754         {
1755                 .subvendor = 0x1019,
1756                 .subdevice = 0x0a85,
1757                 .name = "ECS L7VMM2",
1758                 .type = AC97_TUNE_HP_ONLY
1759         },
1760         {
1761                 .subvendor = 0x1849,
1762                 .subdevice = 0x3059,
1763                 .name = "ASRock K7VM2",
1764                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1765         },
1766         {
1767                 .subvendor = 0x14cd,
1768                 .subdevice = 0x7002,
1769                 .name = "Unknown",
1770                 .type = AC97_TUNE_ALC_JACK
1771         },
1772         {
1773                 .subvendor = 0x1071,
1774                 .subdevice = 0x8590,
1775                 .name = "Mitac Mobo",
1776                 .type = AC97_TUNE_ALC_JACK
1777         },
1778         {
1779                 .subvendor = 0x161f,
1780                 .subdevice = 0x202b,
1781                 .name = "Arima Notebook",
1782                 .type = AC97_TUNE_HP_ONLY,
1783         },
1784         {
1785                 .subvendor = 0x161f,
1786                 .subdevice = 0x2032,
1787                 .name = "Targa Traveller 811",
1788                 .type = AC97_TUNE_HP_ONLY,
1789         },
1790         {
1791                 .subvendor = 0x161f,
1792                 .subdevice = 0x2032,
1793                 .name = "m680x",
1794                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1795         },
1796         { } /* terminator */
1797 };
1798
1799 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1800 {
1801         struct snd_ac97_template ac97;
1802         int err;
1803         static struct snd_ac97_bus_ops ops = {
1804                 .write = snd_via82xx_codec_write,
1805                 .read = snd_via82xx_codec_read,
1806                 .wait = snd_via82xx_codec_wait,
1807         };
1808
1809         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1810                 return err;
1811         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1812         chip->ac97_bus->clock = chip->ac97_clock;
1813
1814         memset(&ac97, 0, sizeof(ac97));
1815         ac97.private_data = chip;
1816         ac97.private_free = snd_via82xx_mixer_free_ac97;
1817         ac97.pci = chip->pci;
1818         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1819         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1820                 return err;
1821
1822         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1823
1824         if (chip->chip_type != TYPE_VIA686) {
1825                 /* use slot 10/11 */
1826                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1827         }
1828
1829         return 0;
1830 }
1831
1832 #ifdef SUPPORT_JOYSTICK
1833 #define JOYSTICK_ADDR   0x200
1834 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1835 {
1836         struct gameport *gp;
1837         struct resource *r;
1838
1839         if (!joystick)
1840                 return -ENODEV;
1841
1842         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1843         if (!r) {
1844                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1845                        JOYSTICK_ADDR);
1846                 return -EBUSY;
1847         }
1848
1849         chip->gameport = gp = gameport_allocate_port();
1850         if (!gp) {
1851                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1852                 release_and_free_resource(r);
1853                 return -ENOMEM;
1854         }
1855
1856         gameport_set_name(gp, "VIA686 Gameport");
1857         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1858         gameport_set_dev_parent(gp, &chip->pci->dev);
1859         gp->io = JOYSTICK_ADDR;
1860         gameport_set_port_data(gp, r);
1861
1862         /* Enable legacy joystick port */
1863         *legacy |= VIA_FUNC_ENABLE_GAME;
1864         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1865
1866         gameport_register_port(chip->gameport);
1867
1868         return 0;
1869 }
1870
1871 static void snd_via686_free_gameport(struct via82xx *chip)
1872 {
1873         if (chip->gameport) {
1874                 struct resource *r = gameport_get_port_data(chip->gameport);
1875
1876                 gameport_unregister_port(chip->gameport);
1877                 chip->gameport = NULL;
1878                 release_and_free_resource(r);
1879         }
1880 }
1881 #else
1882 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1883 {
1884         return -ENOSYS;
1885 }
1886 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1887 #endif
1888
1889
1890 /*
1891  *
1892  */
1893
1894 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1895 {
1896         int i, err, caps;
1897         unsigned char val;
1898
1899         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1900         for (i = 0; i < caps; i++) {
1901                 snd_via8233_capture_source.index = i;
1902                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1903                 if (err < 0)
1904                         return err;
1905         }
1906         if (ac97_can_spdif(chip->ac97)) {
1907                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1908                 if (err < 0)
1909                         return err;
1910         }
1911         if (chip->chip_type != TYPE_VIA8233A) {
1912                 /* when no h/w PCM volume control is found, use DXS volume control
1913                  * as the PCM vol control
1914                  */
1915                 struct snd_ctl_elem_id sid;
1916                 memset(&sid, 0, sizeof(sid));
1917                 strcpy(sid.name, "PCM Playback Volume");
1918                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1919                 if (! snd_ctl_find_id(chip->card, &sid)) {
1920                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1921                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1922                         if (err < 0)
1923                                 return err;
1924                 }
1925                 else /* Using DXS when PCM emulation is enabled is really weird */
1926                 {
1927                         /* Standalone DXS controls */
1928                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1929                         if (err < 0)
1930                                 return err;
1931                 }
1932         }
1933         /* select spdif data slot 10/11 */
1934         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1935         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1936         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1937         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1938
1939         return 0;
1940 }
1941
1942 static int __devinit snd_via686_init_misc(struct via82xx *chip)
1943 {
1944         unsigned char legacy, legacy_cfg;
1945         int rev_h = 0;
1946
1947         legacy = chip->old_legacy;
1948         legacy_cfg = chip->old_legacy_cfg;
1949         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1950         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1951         if (chip->revision >= VIA_REV_686_H) {
1952                 rev_h = 1;
1953                 if (mpu_port >= 0x200) {        /* force MIDI */
1954                         mpu_port &= 0xfffc;
1955                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1956 #ifdef CONFIG_PM
1957                         chip->mpu_port_saved = mpu_port;
1958 #endif
1959                 } else {
1960                         mpu_port = pci_resource_start(chip->pci, 2);
1961                 }
1962         } else {
1963                 switch (mpu_port) {     /* force MIDI */
1964                 case 0x300:
1965                 case 0x310:
1966                 case 0x320:
1967                 case 0x330:
1968                         legacy_cfg &= ~(3 << 2);
1969                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1970                         break;
1971                 default:                        /* no, use BIOS settings */
1972                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1973                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1974                         break;
1975                 }
1976         }
1977         if (mpu_port >= 0x200 &&
1978             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1979             != NULL) {
1980                 if (rev_h)
1981                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1982                 legacy |= VIA_FUNC_ENABLE_MIDI;
1983         } else {
1984                 if (rev_h)
1985                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1986                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1987                 mpu_port = 0;
1988         }
1989
1990         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1991         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1992         if (chip->mpu_res) {
1993                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1994                                         mpu_port, MPU401_INFO_INTEGRATED,
1995                                         chip->irq, 0, &chip->rmidi) < 0) {
1996                         printk(KERN_WARNING "unable to initialize MPU-401"
1997                                " at 0x%lx, skipping\n", mpu_port);
1998                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1999                 } else {
2000                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2001                 }
2002                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2003         }
2004
2005         snd_via686_create_gameport(chip, &legacy);
2006
2007 #ifdef CONFIG_PM
2008         chip->legacy_saved = legacy;
2009         chip->legacy_cfg_saved = legacy_cfg;
2010 #endif
2011
2012         return 0;
2013 }
2014
2015
2016 /*
2017  * proc interface
2018  */
2019 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2020                                   struct snd_info_buffer *buffer)
2021 {
2022         struct via82xx *chip = entry->private_data;
2023         int i;
2024
2025         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2026         for (i = 0; i < 0xa0; i += 4) {
2027                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2028         }
2029 }
2030
2031 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2032 {
2033         struct snd_info_entry *entry;
2034
2035         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2036                 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2037 }
2038
2039 /*
2040  *
2041  */
2042
2043 static int snd_via82xx_chip_init(struct via82xx *chip)
2044 {
2045         unsigned int val;
2046         unsigned long end_time;
2047         unsigned char pval;
2048
2049 #if 0 /* broken on K7M? */
2050         if (chip->chip_type == TYPE_VIA686)
2051                 /* disable all legacy ports */
2052                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2053 #endif
2054         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2055         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2056                 /* deassert ACLink reset, force SYNC */
2057                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2058                                       VIA_ACLINK_CTRL_ENABLE |
2059                                       VIA_ACLINK_CTRL_RESET |
2060                                       VIA_ACLINK_CTRL_SYNC);
2061                 udelay(100);
2062 #if 1 /* FIXME: should we do full reset here for all chip models? */
2063                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2064                 udelay(100);
2065 #else
2066                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2067                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2068                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2069                 udelay(2);
2070 #endif
2071                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2072                 /* note - FM data out has trouble with non VRA codecs !! */
2073                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2074                 udelay(100);
2075         }
2076
2077         /* Make sure VRA is enabled, in case we didn't do a
2078          * complete codec reset, above */
2079         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2080         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2081                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2082                 /* note - FM data out has trouble with non VRA codecs !! */
2083                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2084                 udelay(100);
2085         }
2086
2087         /* wait until codec ready */
2088         end_time = jiffies + msecs_to_jiffies(750);
2089         do {
2090                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2091                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2092                         break;
2093                 schedule_timeout(1);
2094         } while (time_before(jiffies, end_time));
2095
2096         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2097                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2098
2099 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2100         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2101                                  VIA_REG_AC97_SECONDARY_VALID |
2102                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2103         end_time = jiffies + msecs_to_jiffies(750);
2104         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2105                                  VIA_REG_AC97_SECONDARY_VALID |
2106                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2107         do {
2108                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2109                         chip->ac97_secondary = 1;
2110                         goto __ac97_ok2;
2111                 }
2112                 schedule_timeout(1);
2113         } while (time_before(jiffies, end_time));
2114         /* This is ok, the most of motherboards have only one codec */
2115
2116       __ac97_ok2:
2117 #endif
2118
2119         if (chip->chip_type == TYPE_VIA686) {
2120                 /* route FM trap to IRQ, disable FM trap */
2121                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2122                 /* disable all GPI interrupts */
2123                 outl(0, VIAREG(chip, GPI_INTR));
2124         }
2125
2126         if (chip->chip_type != TYPE_VIA686) {
2127                 /* Workaround for Award BIOS bug:
2128                  * DXS channels don't work properly with VRA if MC97 is disabled.
2129                  */
2130                 struct pci_dev *pci;
2131                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2132                 if (pci) {
2133                         unsigned char data;
2134                         pci_read_config_byte(pci, 0x44, &data);
2135                         pci_write_config_byte(pci, 0x44, data | 0x40);
2136                         pci_dev_put(pci);
2137                 }
2138         }
2139
2140         if (chip->chip_type != TYPE_VIA8233A) {
2141                 int i, idx;
2142                 for (idx = 0; idx < 4; idx++) {
2143                         unsigned long port = chip->port + 0x10 * idx;
2144                         for (i = 0; i < 2; i++) {
2145                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2146                                 outb(chip->playback_volume_c[i],
2147                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2148                         }
2149                 }
2150         }
2151
2152         return 0;
2153 }
2154
2155 #ifdef CONFIG_PM
2156 /*
2157  * power management
2158  */
2159 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2160 {
2161         struct snd_card *card = pci_get_drvdata(pci);
2162         struct via82xx *chip = card->private_data;
2163         int i;
2164
2165         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2166         for (i = 0; i < 2; i++)
2167                 snd_pcm_suspend_all(chip->pcms[i]);
2168         for (i = 0; i < chip->num_devs; i++)
2169                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2170         synchronize_irq(chip->irq);
2171         snd_ac97_suspend(chip->ac97);
2172
2173         /* save misc values */
2174         if (chip->chip_type != TYPE_VIA686) {
2175                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2176                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2177                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2178         }
2179
2180         pci_disable_device(pci);
2181         pci_save_state(pci);
2182         pci_set_power_state(pci, pci_choose_state(pci, state));
2183         return 0;
2184 }
2185
2186 static int snd_via82xx_resume(struct pci_dev *pci)
2187 {
2188         struct snd_card *card = pci_get_drvdata(pci);
2189         struct via82xx *chip = card->private_data;
2190         int i;
2191
2192         pci_set_power_state(pci, PCI_D0);
2193         pci_restore_state(pci);
2194         if (pci_enable_device(pci) < 0) {
2195                 printk(KERN_ERR "via82xx: pci_enable_device failed, "
2196                        "disabling device\n");
2197                 snd_card_disconnect(card);
2198                 return -EIO;
2199         }
2200         pci_set_master(pci);
2201
2202         snd_via82xx_chip_init(chip);
2203
2204         if (chip->chip_type == TYPE_VIA686) {
2205                 if (chip->mpu_port_saved)
2206                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2207                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2208                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2209         } else {
2210                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2211                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2212                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2213         }
2214
2215         snd_ac97_resume(chip->ac97);
2216
2217         for (i = 0; i < chip->num_devs; i++)
2218                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2219
2220         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2221         return 0;
2222 }
2223 #endif /* CONFIG_PM */
2224
2225 static int snd_via82xx_free(struct via82xx *chip)
2226 {
2227         unsigned int i;
2228
2229         if (chip->irq < 0)
2230                 goto __end_hw;
2231         /* disable interrupts */
2232         for (i = 0; i < chip->num_devs; i++)
2233                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2234         synchronize_irq(chip->irq);
2235       __end_hw:
2236         if (chip->irq >= 0)
2237                 free_irq(chip->irq, chip);
2238         release_and_free_resource(chip->mpu_res);
2239         pci_release_regions(chip->pci);
2240
2241         if (chip->chip_type == TYPE_VIA686) {
2242                 snd_via686_free_gameport(chip);
2243                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2244                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2245         }
2246         pci_disable_device(chip->pci);
2247         kfree(chip);
2248         return 0;
2249 }
2250
2251 static int snd_via82xx_dev_free(struct snd_device *device)
2252 {
2253         struct via82xx *chip = device->device_data;
2254         return snd_via82xx_free(chip);
2255 }
2256
2257 static int __devinit snd_via82xx_create(struct snd_card *card,
2258                                         struct pci_dev *pci,
2259                                         int chip_type,
2260                                         int revision,
2261                                         unsigned int ac97_clock,
2262                                         struct via82xx ** r_via)
2263 {
2264         struct via82xx *chip;
2265         int err;
2266         static struct snd_device_ops ops = {
2267                 .dev_free =     snd_via82xx_dev_free,
2268         };
2269
2270         if ((err = pci_enable_device(pci)) < 0)
2271                 return err;
2272
2273         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2274                 pci_disable_device(pci);
2275                 return -ENOMEM;
2276         }
2277
2278         chip->chip_type = chip_type;
2279         chip->revision = revision;
2280
2281         spin_lock_init(&chip->reg_lock);
2282         spin_lock_init(&chip->rates[0].lock);
2283         spin_lock_init(&chip->rates[1].lock);
2284         chip->card = card;
2285         chip->pci = pci;
2286         chip->irq = -1;
2287
2288         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2289         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2290         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2291                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2292
2293         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2294                 kfree(chip);
2295                 pci_disable_device(pci);
2296                 return err;
2297         }
2298         chip->port = pci_resource_start(pci, 0);
2299         if (request_irq(pci->irq,
2300                         chip_type == TYPE_VIA8233 ?
2301                         snd_via8233_interrupt : snd_via686_interrupt,
2302                         IRQF_SHARED,
2303                         card->driver, chip)) {
2304                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2305                 snd_via82xx_free(chip);
2306                 return -EBUSY;
2307         }
2308         chip->irq = pci->irq;
2309         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2310                 chip->ac97_clock = ac97_clock;
2311         synchronize_irq(chip->irq);
2312
2313         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2314                 snd_via82xx_free(chip);
2315                 return err;
2316         }
2317
2318         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2319                 snd_via82xx_free(chip);
2320                 return err;
2321         }
2322
2323         /* The 8233 ac97 controller does not implement the master bit
2324          * in the pci command register. IMHO this is a violation of the PCI spec.
2325          * We call pci_set_master here because it does not hurt. */
2326         pci_set_master(pci);
2327
2328         snd_card_set_dev(card, &pci->dev);
2329
2330         *r_via = chip;
2331         return 0;
2332 }
2333
2334 struct via823x_info {
2335         int revision;
2336         char *name;
2337         int type;
2338 };
2339 static struct via823x_info via823x_cards[] __devinitdata = {
2340         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2341         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2342         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2343         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2344         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2345         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2346         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2347 };
2348
2349 /*
2350  * auto detection of DXS channel supports.
2351  */
2352
2353 static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2354         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2355         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2356         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2357         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2358         SND_PCI_QUIRK(0x1019, 0, "ESC K8", VIA_DXS_SRC),
2359         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2360         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2361         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2362         SND_PCI_QUIRK(0x1043, 0, "ASUS A7/A8", VIA_DXS_NO_VRA),
2363         SND_PCI_QUIRK(0x1071, 0, "Diverse Notebook", VIA_DXS_NO_VRA),
2364         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2365         SND_PCI_QUIRK(0x1106, 0, "ASRock", VIA_DXS_SRC),
2366         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_ENABLE),
2367         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_ENABLE),
2368         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2369         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2370         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2371         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2372         SND_PCI_QUIRK(0x1462, 0, "MSI Mobo", VIA_DXS_SRC),
2373         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2374         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2375         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2376         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2377         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2378         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2379         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2380         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2381         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2382         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2383         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2384         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2385         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2386         SND_PCI_QUIRK(0x1695, 0, "EPoX mobo", VIA_DXS_SRC),
2387         SND_PCI_QUIRK(0x16f3, 0, "Jetway K8", VIA_DXS_SRC),
2388         SND_PCI_QUIRK(0x1734, 0, "FSC Laptop", VIA_DXS_SRC),
2389         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2390         SND_PCI_QUIRK(0x1849, 0, "ASRock mobo", VIA_DXS_SRC),
2391         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2392         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2393         { } /* terminator */
2394 };
2395
2396 static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2397 {
2398         const struct snd_pci_quirk *w;
2399
2400         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2401         if (w) {
2402                 snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2403                             w->name);
2404                 return w->value;
2405         }
2406
2407         /* for newer revision, default to DXS_SRC */
2408         if (revision >= VIA_REV_8235)
2409                 return VIA_DXS_SRC;
2410
2411         /*
2412          * not detected, try 48k rate only to be sure.
2413          */
2414         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2415         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2416         printk(KERN_INFO "         and report if it works on your machine.\n");
2417         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2418         return VIA_DXS_48K;
2419 };
2420
2421 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2422                                        const struct pci_device_id *pci_id)
2423 {
2424         struct snd_card *card;
2425         struct via82xx *chip;
2426         int chip_type = 0, card_type;
2427         unsigned int i;
2428         int err;
2429
2430         card = snd_card_new(index, id, THIS_MODULE, 0);
2431         if (card == NULL)
2432                 return -ENOMEM;
2433
2434         card_type = pci_id->driver_data;
2435         switch (card_type) {
2436         case TYPE_CARD_VIA686:
2437                 strcpy(card->driver, "VIA686A");
2438                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2439                 chip_type = TYPE_VIA686;
2440                 break;
2441         case TYPE_CARD_VIA8233:
2442                 chip_type = TYPE_VIA8233;
2443                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2444                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2445                         if (pci->revision == via823x_cards[i].revision) {
2446                                 chip_type = via823x_cards[i].type;
2447                                 strcpy(card->shortname, via823x_cards[i].name);
2448                                 break;
2449                         }
2450                 }
2451                 if (chip_type != TYPE_VIA8233A) {
2452                         if (dxs_support == VIA_DXS_AUTO)
2453                                 dxs_support = check_dxs_list(pci, pci->revision);
2454                         /* force to use VIA8233 or 8233A model according to
2455                          * dxs_support module option
2456                          */
2457                         if (dxs_support == VIA_DXS_DISABLE)
2458                                 chip_type = TYPE_VIA8233A;
2459                         else
2460                                 chip_type = TYPE_VIA8233;
2461                 }
2462                 if (chip_type == TYPE_VIA8233A)
2463                         strcpy(card->driver, "VIA8233A");
2464                 else if (pci->revision >= VIA_REV_8237)
2465                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2466                 else
2467                         strcpy(card->driver, "VIA8233");
2468                 break;
2469         default:
2470                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2471                 err = -EINVAL;
2472                 goto __error;
2473         }
2474
2475         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2476                                       ac97_clock, &chip)) < 0)
2477                 goto __error;
2478         card->private_data = chip;
2479         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2480                 goto __error;
2481
2482         if (chip_type == TYPE_VIA686) {
2483                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2484                     (err = snd_via686_init_misc(chip)) < 0)
2485                         goto __error;
2486         } else {
2487                 if (chip_type == TYPE_VIA8233A) {
2488                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2489                                 goto __error;
2490                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2491                 } else {
2492                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2493                                 goto __error;
2494                         if (dxs_support == VIA_DXS_48K)
2495                                 chip->dxs_fixed = 1;
2496                         else if (dxs_support == VIA_DXS_NO_VRA)
2497                                 chip->no_vra = 1;
2498                         else if (dxs_support == VIA_DXS_SRC) {
2499                                 chip->no_vra = 1;
2500                                 chip->dxs_src = 1;
2501                         }
2502                 }
2503                 if ((err = snd_via8233_init_misc(chip)) < 0)
2504                         goto __error;
2505         }
2506
2507         /* disable interrupts */
2508         for (i = 0; i < chip->num_devs; i++)
2509                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2510
2511         snprintf(card->longname, sizeof(card->longname),
2512                  "%s with %s at %#lx, irq %d", card->shortname,
2513                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2514
2515         snd_via82xx_proc_init(chip);
2516
2517         if ((err = snd_card_register(card)) < 0) {
2518                 snd_card_free(card);
2519                 return err;
2520         }
2521         pci_set_drvdata(pci, card);
2522         return 0;
2523
2524  __error:
2525         snd_card_free(card);
2526         return err;
2527 }
2528
2529 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2530 {
2531         snd_card_free(pci_get_drvdata(pci));
2532         pci_set_drvdata(pci, NULL);
2533 }
2534
2535 static struct pci_driver driver = {
2536         .name = "VIA 82xx Audio",
2537         .id_table = snd_via82xx_ids,
2538         .probe = snd_via82xx_probe,
2539         .remove = __devexit_p(snd_via82xx_remove),
2540 #ifdef CONFIG_PM
2541         .suspend = snd_via82xx_suspend,
2542         .resume = snd_via82xx_resume,
2543 #endif
2544 };
2545
2546 static int __init alsa_card_via82xx_init(void)
2547 {
2548         return pci_register_driver(&driver);
2549 }
2550
2551 static void __exit alsa_card_via82xx_exit(void)
2552 {
2553         pci_unregister_driver(&driver);
2554 }
2555
2556 module_init(alsa_card_via82xx_init)
2557 module_exit(alsa_card_via82xx_exit)