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

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  *
  45  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46  *      - Optimize position calculation for the 823x chips.
  47  */
  48
  49 #include <asm/io.h>
  50 #include <linux/delay.h>
  51 #include <linux/interrupt.h>
  52 #include <linux/init.h>
  53 #include <linux/pci.h>
  54 #include <linux/slab.h>
  55 #include <linux/gameport.h>
  56 #include <linux/moduleparam.h>
  57 #include <sound/core.h>
  58 #include <sound/pcm.h>
  59 #include <sound/pcm_params.h>
  60 #include <sound/info.h>
  61 #include <sound/tlv.h>
  62 #include <sound/ac97_codec.h>
  63 #include <sound/mpu401.h>
  64 #include <sound/initval.h>
  65
  66 #if 0
  67 #define POINTER_DEBUG
  68 #endif
  69
  70 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71 MODULE_DESCRIPTION("VIA VT82xx audio");
  72 MODULE_LICENSE("GPL");
  73 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  74
  75 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  76 #define SUPPORT_JOYSTICK 1
  77 #endif
  78
  79 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81 static long mpu_port;
  82 #ifdef SUPPORT_JOYSTICK
  83 static int joystick;
  84 #endif
  85 static int ac97_clock = 48000;
  86 static char *ac97_quirk;
  87 static int dxs_support;
  88 static int nodelay;
  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 module_param(nodelay, int, 0444);
 107 MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
 108
 109 /* just for backward compatibility */
 110 static int enable;
 111 module_param(enable, bool, 0444);
 112
 113
 114 /* revision numbers for via686 */
 115 #define VIA_REV_686_A           0x10
 116 #define VIA_REV_686_B           0x11
 117 #define VIA_REV_686_C           0x12
 118 #define VIA_REV_686_D           0x13
 119 #define VIA_REV_686_E           0x14
 120 #define VIA_REV_686_H           0x20
 121
 122 /* revision numbers for via8233 */
 123 #define VIA_REV_PRE_8233        0x10    /* not in market */
 124 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 125 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 126 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 127 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 128 #define VIA_REV_8237            0x60
 129 #define VIA_REV_8251            0x70
 130
 131 /*
 132  *  Direct registers
 133  */
 134
 135 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 136 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 137
 138 /* common offsets */
 139 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 140 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 141 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 142 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 143 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 144 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 145 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 146 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 147 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 148 #define   VIA_REG_CTRL_START            0x80    /* WO */
 149 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 150 #define   VIA_REG_CTRL_AUTOSTART        0x20
 151 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 152 #define   VIA_REG_CTRL_INT_STOP         0x04
 153 #define   VIA_REG_CTRL_INT_EOL          0x02
 154 #define   VIA_REG_CTRL_INT_FLAG         0x01
 155 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 156 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 157 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 158 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 159 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 160 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 161 #define   VIA_REG_TYPE_INT_LLINE        0x00
 162 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 163 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 164 #define   VIA_REG_TYPE_INT_MASK         0x0c
 165 #define   VIA_REG_TYPE_INT_EOL          0x02
 166 #define   VIA_REG_TYPE_INT_FLAG         0x01
 167 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 168 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 169 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 170 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 171 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 172 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 173 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 174
 175 #define DEFINE_VIA_REGSET(name,val) \
 176 enum {\
 177         VIA_REG_##name##_STATUS         = (val),\
 178         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 179         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 180         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 181         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 182         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 183         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 184 }
 185
 186 /* playback block */
 187 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 188 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 189 DEFINE_VIA_REGSET(FM, 0x20);
 190
 191 /* AC'97 */
 192 #define VIA_REG_AC97                    0x80    /* dword */
 193 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 194 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 195 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 196 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 197 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 198 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 199 #define   VIA_REG_AC97_BUSY             (1<<24)
 200 #define   VIA_REG_AC97_READ             (1<<23)
 201 #define   VIA_REG_AC97_CMD_SHIFT        16
 202 #define   VIA_REG_AC97_CMD_MASK         0x7e
 203 #define   VIA_REG_AC97_DATA_SHIFT       0
 204 #define   VIA_REG_AC97_DATA_MASK        0xffff
 205
 206 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 207 /* via686 */
 208 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 209 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 210 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 211 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 212 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 213 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 214 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 215 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 216 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 217 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 218 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 219 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 220 /* via8233 */
 221 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 222 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 223 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 224 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 225 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 226 #define   VIA8233_REG_SGD_CHAN_SDX      0
 227 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 228 #define   VIA8233_REG_SGD_CHAN_REC      6
 229 #define   VIA8233_REG_SGD_CHAN_REC1     7
 230
 231 #define VIA_REG_GPI_STATUS              0x88
 232 #define VIA_REG_GPI_INTR                0x8c
 233
 234 /* multi-channel and capture registers for via8233 */
 235 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 236 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 237
 238 /* via8233-specific registers */
 239 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 240 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 241 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 242 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 243 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 244 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 245 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 246 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 247
 248 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 249
 250 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 251 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 252 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 253 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 254
 255 #define VIA_TBL_BIT_FLAG        0x40000000
 256 #define VIA_TBL_BIT_EOL         0x80000000
 257
 258 /* pci space */
 259 #define VIA_ACLINK_STAT         0x40
 260 #define  VIA_ACLINK_C11_READY   0x20
 261 #define  VIA_ACLINK_C10_READY   0x10
 262 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 263 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 264 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 265 #define VIA_ACLINK_CTRL         0x41
 266 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 267 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 268 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 269 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 270 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 271 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 272 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 273 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 274 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 275                                  VIA_ACLINK_CTRL_RESET|\
 276                                  VIA_ACLINK_CTRL_PCM|\
 277                                  VIA_ACLINK_CTRL_VRA)
 278 #define VIA_FUNC_ENABLE         0x42
 279 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 280 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 281 #define  VIA_FUNC_RX2C_WRITE    0x20
 282 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 283 #define  VIA_FUNC_ENABLE_GAME   0x08
 284 #define  VIA_FUNC_ENABLE_FM     0x04
 285 #define  VIA_FUNC_ENABLE_MIDI   0x02
 286 #define  VIA_FUNC_ENABLE_SB     0x01
 287 #define VIA_PNP_CONTROL         0x43
 288 #define VIA_FM_NMI_CTRL         0x48
 289 #define VIA8233_VOLCHG_CTRL     0x48
 290 #define VIA8233_SPDIF_CTRL      0x49
 291 #define  VIA8233_SPDIF_DX3      0x08
 292 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 293 #define  VIA8233_SPDIF_SLOT_1011        0x00
 294 #define  VIA8233_SPDIF_SLOT_34          0x01
 295 #define  VIA8233_SPDIF_SLOT_78          0x02
 296 #define  VIA8233_SPDIF_SLOT_69          0x03
 297
 298 /*
 299  */
 300
 301 #define VIA_DXS_AUTO    0
 302 #define VIA_DXS_ENABLE  1
 303 #define VIA_DXS_DISABLE 2
 304 #define VIA_DXS_48K     3
 305 #define VIA_DXS_NO_VRA  4
 306 #define VIA_DXS_SRC     5
 307
 308
 309 /*
 310  * pcm stream
 311  */
 312
 313 struct snd_via_sg_table {
 314         unsigned int offset;
 315         unsigned int size;
 316 } ;
 317
 318 #define VIA_TABLE_SIZE  255
 319 #define VIA_MAX_BUFSIZE (1<<24)
 320
 321 struct viadev {
 322         unsigned int reg_offset;
 323         unsigned long port;
 324         int direction;  /* playback = 0, capture = 1 */
 325         struct snd_pcm_substream *substream;
 326         int running;
 327         unsigned int tbl_entries; /* # descriptors */
 328         struct snd_dma_buffer table;
 329         struct snd_via_sg_table *idx_table;
 330         /* for recovery from the unexpected pointer */
 331         unsigned int lastpos;
 332         unsigned int fragsize;
 333         unsigned int bufsize;
 334         unsigned int bufsize2;
 335         int hwptr_done;         /* processed frame position in the buffer */
 336         int in_interrupt;
 337         int shadow_shift;
 338 };
 339
 340
 341 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 342 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 343
 344 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 345
 346 struct via_rate_lock {
 347         spinlock_t lock;
 348         int rate;
 349         int used;
 350 };
 351
 352 struct via82xx {
 353         int irq;
 354
 355         unsigned long port;
 356         struct resource *mpu_res;
 357         int chip_type;
 358         unsigned char revision;
 359
 360         unsigned char old_legacy;
 361         unsigned char old_legacy_cfg;
 362 #ifdef CONFIG_PM
 363         unsigned char legacy_saved;
 364         unsigned char legacy_cfg_saved;
 365         unsigned char spdif_ctrl_saved;
 366         unsigned char capture_src_saved[2];
 367         unsigned int mpu_port_saved;
 368 #endif
 369
 370         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 371         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 372
 373         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 374
 375         struct pci_dev *pci;
 376         struct snd_card *card;
 377
 378         unsigned int num_devs;
 379         unsigned int playback_devno, multi_devno, capture_devno;
 380         struct viadev devs[VIA_MAX_DEVS];
 381         struct via_rate_lock rates[2]; /* playback and capture */
 382         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 383         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 384         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 385         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 386
 387         struct snd_pcm *pcms[2];
 388         struct snd_rawmidi *rmidi;
 389
 390         struct snd_ac97_bus *ac97_bus;
 391         struct snd_ac97 *ac97;
 392         unsigned int ac97_clock;
 393         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 394
 395         spinlock_t reg_lock;
 396         struct snd_info_entry *proc_entry;
 397
 398 #ifdef SUPPORT_JOYSTICK
 399         struct gameport *gameport;
 400 #endif
 401 };
 402
 403 static struct pci_device_id snd_via82xx_ids[] = {
 404         /* 0x1106, 0x3058 */
 405         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 406         /* 0x1106, 0x3059 */
 407         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 408         { 0, }
 409 };
 410
 411 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 412
 413 /*
 414  */
 415
 416 /*
 417  * allocate and initialize the descriptor buffers
 418  * periods = number of periods
 419  * fragsize = period size in bytes
 420  */
 421 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 422                            struct pci_dev *pci,
 423                            unsigned int periods, unsigned int fragsize)
 424 {
 425         unsigned int i, idx, ofs, rest;
 426         struct via82xx *chip = snd_pcm_substream_chip(substream);
 427
 428         if (dev->table.area == NULL) {
 429                 /* the start of each lists must be aligned to 8 bytes,
 430                  * but the kernel pages are much bigger, so we don't care
 431                  */
 432                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 433                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 434                                         &dev->table) < 0)
 435                         return -ENOMEM;
 436         }
 437         if (! dev->idx_table) {
 438                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 439                 if (! dev->idx_table)
 440                         return -ENOMEM;
 441         }
 442
 443         /* fill the entries */
 444         idx = 0;
 445         ofs = 0;
 446         for (i = 0; i < periods; i++) {
 447                 rest = fragsize;
 448                 /* fill descriptors for a period.
 449                  * a period can be split to several descriptors if it's
 450                  * over page boundary.
 451                  */
 452                 do {
 453                         unsigned int r;
 454                         unsigned int flag;
 455                         unsigned int addr;
 456
 457                         if (idx >= VIA_TABLE_SIZE) {
 458                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 459                                 return -EINVAL;
 460                         }
 461                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 462                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 463                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 464                         rest -= r;
 465                         if (! rest) {
 466                                 if (i == periods - 1)
 467                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 468                                 else
 469                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 470                         } else
 471                                 flag = 0; /* period continues to the next */
 472                         /*
 473                         printk(KERN_DEBUG "via: tbl %d: at %d  size %d "
 474                                "(rest %d)\n", idx, ofs, r, rest);
 475                         */
 476                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 477                         dev->idx_table[idx].offset = ofs;
 478                         dev->idx_table[idx].size = r;
 479                         ofs += r;
 480                         idx++;
 481                 } while (rest > 0);
 482         }
 483         dev->tbl_entries = idx;
 484         dev->bufsize = periods * fragsize;
 485         dev->bufsize2 = dev->bufsize / 2;
 486         dev->fragsize = fragsize;
 487         return 0;
 488 }
 489
 490
 491 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 492                            struct pci_dev *pci)
 493 {
 494         if (dev->table.area) {
 495                 snd_dma_free_pages(&dev->table);
 496                 dev->table.area = NULL;
 497         }
 498         kfree(dev->idx_table);
 499         dev->idx_table = NULL;
 500         return 0;
 501 }
 502
 503 /*
 504  *  Basic I/O
 505  */
 506
 507 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 508 {
 509         return inl(VIAREG(chip, AC97));
 510 }
 511
 512 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 513 {
 514         outl(val, VIAREG(chip, AC97));
 515 }
 516
 517 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 518 {
 519         unsigned int timeout = 1000;    /* 1ms */
 520         unsigned int val;
 521
 522         while (timeout-- > 0) {
 523                 udelay(1);
 524                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 525                         return val & 0xffff;
 526         }
 527         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 528                    secondary, snd_via82xx_codec_xread(chip));
 529         return -EIO;
 530 }
 531
 532 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 533 {
 534         unsigned int timeout = 1000;    /* 1ms */
 535         unsigned int val, val1;
 536         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 537                                          VIA_REG_AC97_SECONDARY_VALID;
 538
 539         while (timeout-- > 0) {
 540                 val = snd_via82xx_codec_xread(chip);
 541                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 542                 if (val1 == stat)
 543                         return val & 0xffff;
 544                 udelay(1);
 545         }
 546         return -EIO;
 547 }
 548
 549 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 550 {
 551         struct via82xx *chip = ac97->private_data;
 552         int err;
 553         err = snd_via82xx_codec_ready(chip, ac97->num);
 554         /* here we need to wait fairly for long time.. */
 555         if (!nodelay)
 556                 msleep(500);
 557 }
 558
 559 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 560                                     unsigned short reg,
 561                                     unsigned short val)
 562 {
 563         struct via82xx *chip = ac97->private_data;
 564         unsigned int xval;
 565
 566         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 567         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 568         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 569         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 570         snd_via82xx_codec_xwrite(chip, xval);
 571         snd_via82xx_codec_ready(chip, ac97->num);
 572 }
 573
 574 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 575 {
 576         struct via82xx *chip = ac97->private_data;
 577         unsigned int xval, val = 0xffff;
 578         int again = 0;
 579
 580         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 581         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 582         xval |= VIA_REG_AC97_READ;
 583         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 584         while (1) {
 585                 if (again++ > 3) {
 586                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 587                                    ac97->num, snd_via82xx_codec_xread(chip));
 588                         return 0xffff;
 589                 }
 590                 snd_via82xx_codec_xwrite(chip, xval);
 591                 udelay (20);
 592                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 593                         udelay(25);
 594                         val = snd_via82xx_codec_xread(chip);
 595                         break;
 596                 }
 597         }
 598         return val & 0xffff;
 599 }
 600
 601 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 602 {
 603         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 604              VIADEV_REG(viadev, OFFSET_CONTROL));
 605         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 606         udelay(50);
 607         /* disable interrupts */
 608         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 609         /* clear interrupts */
 610         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 611         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 612         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 613         viadev->lastpos = 0;
 614         viadev->hwptr_done = 0;
 615 }
 616
 617
 618 /*
 619  *  Interrupt handler
 620  *  Used for 686 and 8233A
 621  */
 622 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 623 {
 624         struct via82xx *chip = dev_id;
 625         unsigned int status;
 626         unsigned int i;
 627
 628         status = inl(VIAREG(chip, SGD_SHADOW));
 629         if (! (status & chip->intr_mask)) {
 630                 if (chip->rmidi)
 631                         /* check mpu401 interrupt */
 632                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 633                 return IRQ_NONE;
 634         }
 635
 636         /* check status for each stream */
 637         spin_lock(&chip->reg_lock);
 638         for (i = 0; i < chip->num_devs; i++) {
 639                 struct viadev *viadev = &chip->devs[i];
 640                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 641                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 642                         continue;
 643                 if (viadev->substream && viadev->running) {
 644                         /*
 645                          * Update hwptr_done based on 'period elapsed'
 646                          * interrupts. We'll use it, when the chip returns 0
 647                          * for OFFSET_CURR_COUNT.
 648                          */
 649                         if (c_status & VIA_REG_STAT_EOL)
 650                                 viadev->hwptr_done = 0;
 651                         else
 652                                 viadev->hwptr_done += viadev->fragsize;
 653                         viadev->in_interrupt = c_status;
 654                         spin_unlock(&chip->reg_lock);
 655                         snd_pcm_period_elapsed(viadev->substream);
 656                         spin_lock(&chip->reg_lock);
 657                         viadev->in_interrupt = 0;
 658                 }
 659                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 660         }
 661         spin_unlock(&chip->reg_lock);
 662         return IRQ_HANDLED;
 663 }
 664
 665 /*
 666  *  Interrupt handler
 667  */
 668 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 669 {
 670         struct via82xx *chip = dev_id;
 671         unsigned int status;
 672         unsigned int i;
 673         int irqreturn = 0;
 674
 675         /* check status for each stream */
 676         spin_lock(&chip->reg_lock);
 677         status = inl(VIAREG(chip, SGD_SHADOW));
 678
 679         for (i = 0; i < chip->num_devs; i++) {
 680                 struct viadev *viadev = &chip->devs[i];
 681                 struct snd_pcm_substream *substream;
 682                 unsigned char c_status, shadow_status;
 683
 684                 shadow_status = (status >> viadev->shadow_shift) &
 685                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 686                          VIA_REG_STAT_FLAG);
 687                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 688                 if (!c_status)
 689                         continue;
 690
 691                 substream = viadev->substream;
 692                 if (substream && viadev->running) {
 693                         /*
 694                          * Update hwptr_done based on 'period elapsed'
 695                          * interrupts. We'll use it, when the chip returns 0
 696                          * for OFFSET_CURR_COUNT.
 697                          */
 698                         if (c_status & VIA_REG_STAT_EOL)
 699                                 viadev->hwptr_done = 0;
 700                         else
 701                                 viadev->hwptr_done += viadev->fragsize;
 702                         viadev->in_interrupt = c_status;
 703                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 704                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 705                         spin_unlock(&chip->reg_lock);
 706
 707                         snd_pcm_period_elapsed(substream);
 708
 709                         spin_lock(&chip->reg_lock);
 710                         viadev->in_interrupt = 0;
 711                 }
 712                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 713                 irqreturn = 1;
 714         }
 715         spin_unlock(&chip->reg_lock);
 716         return IRQ_RETVAL(irqreturn);
 717 }
 718
 719 /*
 720  *  PCM callbacks
 721  */
 722
 723 /*
 724  * trigger callback
 725  */
 726 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 727 {
 728         struct via82xx *chip = snd_pcm_substream_chip(substream);
 729         struct viadev *viadev = substream->runtime->private_data;
 730         unsigned char val;
 731
 732         if (chip->chip_type != TYPE_VIA686)
 733                 val = VIA_REG_CTRL_INT;
 734         else
 735                 val = 0;
 736         switch (cmd) {
 737         case SNDRV_PCM_TRIGGER_START:
 738         case SNDRV_PCM_TRIGGER_RESUME:
 739                 val |= VIA_REG_CTRL_START;
 740                 viadev->running = 1;
 741                 break;
 742         case SNDRV_PCM_TRIGGER_STOP:
 743         case SNDRV_PCM_TRIGGER_SUSPEND:
 744                 val = VIA_REG_CTRL_TERMINATE;
 745                 viadev->running = 0;
 746                 break;
 747         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 748                 val |= VIA_REG_CTRL_PAUSE;
 749                 viadev->running = 0;
 750                 break;
 751         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 752                 viadev->running = 1;
 753                 break;
 754         default:
 755                 return -EINVAL;
 756         }
 757         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 758         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 759                 snd_via82xx_channel_reset(chip, viadev);
 760         return 0;
 761 }
 762
 763
 764 /*
 765  * pointer callbacks
 766  */
 767
 768 /*
 769  * calculate the linear position at the given sg-buffer index and the rest count
 770  */
 771
 772 #define check_invalid_pos(viadev,pos) \
 773         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 774                                      viadev->lastpos < viadev->bufsize2))
 775
 776 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 777                                            unsigned int count)
 778 {
 779         unsigned int size, base, res;
 780
 781         size = viadev->idx_table[idx].size;
 782         base = viadev->idx_table[idx].offset;
 783         res = base + size - count;
 784         if (res >= viadev->bufsize)
 785                 res -= viadev->bufsize;
 786
 787         /* check the validity of the calculated position */
 788         if (size < count) {
 789                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 790                            (int)size, (int)count);
 791                 res = viadev->lastpos;
 792         } else {
 793                 if (! count) {
 794                         /* Some mobos report count = 0 on the DMA boundary,
 795                          * i.e. count = size indeed.
 796                          * Let's check whether this step is above the expected size.
 797                          */
 798                         int delta = res - viadev->lastpos;
 799                         if (delta < 0)
 800                                 delta += viadev->bufsize;
 801                         if ((unsigned int)delta > viadev->fragsize)
 802                                 res = base;
 803                 }
 804                 if (check_invalid_pos(viadev, res)) {
 805 #ifdef POINTER_DEBUG
 806                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 807                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 808                                "count = 0x%x\n", idx, viadev->tbl_entries,
 809                                viadev->lastpos, viadev->bufsize2,
 810                                viadev->idx_table[idx].offset,
 811                                viadev->idx_table[idx].size, count);
 812 #endif
 813                         /* count register returns full size when end of buffer is reached */
 814                         res = base + size;
 815                         if (check_invalid_pos(viadev, res)) {
 816                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 817                                            "using last valid pointer\n");
 818                                 res = viadev->lastpos;
 819                         }
 820                 }
 821         }
 822         return res;
 823 }
 824
 825 /*
 826  * get the current pointer on via686
 827  */
 828 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 829 {
 830         struct via82xx *chip = snd_pcm_substream_chip(substream);
 831         struct viadev *viadev = substream->runtime->private_data;
 832         unsigned int idx, ptr, count, res;
 833
 834         if (snd_BUG_ON(!viadev->tbl_entries))
 835                 return 0;
 836         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 837                 return 0;
 838
 839         spin_lock(&chip->reg_lock);
 840         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 841         /* The via686a does not have the current index register,
 842          * so we need to calculate the index from CURR_PTR.
 843          */
 844         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 845         if (ptr <= (unsigned int)viadev->table.addr)
 846                 idx = 0;
 847         else /* CURR_PTR holds the address + 8 */
 848                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 849         res = calc_linear_pos(viadev, idx, count);
 850         viadev->lastpos = res; /* remember the last position */
 851         spin_unlock(&chip->reg_lock);
 852
 853         return bytes_to_frames(substream->runtime, res);
 854 }
 855
 856 /*
 857  * get the current pointer on via823x
 858  */
 859 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 860 {
 861         struct via82xx *chip = snd_pcm_substream_chip(substream);
 862         struct viadev *viadev = substream->runtime->private_data;
 863         unsigned int idx, count, res;
 864         int status;
 865
 866         if (snd_BUG_ON(!viadev->tbl_entries))
 867                 return 0;
 868
 869         spin_lock(&chip->reg_lock);
 870         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 871         status = viadev->in_interrupt;
 872         if (!status)
 873                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 874
 875         /* An apparent bug in the 8251 is worked around by sending a
 876          * REG_CTRL_START. */
 877         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 878                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 879
 880         if (!(status & VIA_REG_STAT_ACTIVE)) {
 881                 res = 0;
 882                 goto unlock;
 883         }
 884         if (count & 0xffffff) {
 885                 idx = count >> 24;
 886                 if (idx >= viadev->tbl_entries) {
 887 #ifdef POINTER_DEBUG
 888                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 889                                viadev->tbl_entries);
 890 #endif
 891                         res = viadev->lastpos;
 892                 } else {
 893                         count &= 0xffffff;
 894                         res = calc_linear_pos(viadev, idx, count);
 895                 }
 896         } else {
 897                 res = viadev->hwptr_done;
 898                 if (!viadev->in_interrupt) {
 899                         if (status & VIA_REG_STAT_EOL) {
 900                                 res = 0;
 901                         } else
 902                                 if (status & VIA_REG_STAT_FLAG) {
 903                                         res += viadev->fragsize;
 904                                 }
 905                 }
 906         }
 907 unlock:
 908         viadev->lastpos = res;
 909         spin_unlock(&chip->reg_lock);
 910
 911         return bytes_to_frames(substream->runtime, res);
 912 }
 913
 914
 915 /*
 916  * hw_params callback:
 917  * allocate the buffer and build up the buffer description table
 918  */
 919 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 920                                  struct snd_pcm_hw_params *hw_params)
 921 {
 922         struct via82xx *chip = snd_pcm_substream_chip(substream);
 923         struct viadev *viadev = substream->runtime->private_data;
 924         int err;
 925
 926         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 927         if (err < 0)
 928                 return err;
 929         err = build_via_table(viadev, substream, chip->pci,
 930                               params_periods(hw_params),
 931                               params_period_bytes(hw_params));
 932         if (err < 0)
 933                 return err;
 934
 935         return 0;
 936 }
 937
 938 /*
 939  * hw_free callback:
 940  * clean up the buffer description table and release the buffer
 941  */
 942 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 943 {
 944         struct via82xx *chip = snd_pcm_substream_chip(substream);
 945         struct viadev *viadev = substream->runtime->private_data;
 946
 947         clean_via_table(viadev, substream, chip->pci);
 948         snd_pcm_lib_free_pages(substream);
 949         return 0;
 950 }
 951
 952
 953 /*
 954  * set up the table pointer
 955  */
 956 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 957 {
 958         snd_via82xx_codec_ready(chip, 0);
 959         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 960         udelay(20);
 961         snd_via82xx_codec_ready(chip, 0);
 962 }
 963
 964 /*
 965  * prepare callback for playback and capture on via686
 966  */
 967 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 968                                 struct snd_pcm_runtime *runtime)
 969 {
 970         snd_via82xx_channel_reset(chip, viadev);
 971         /* this must be set after channel_reset */
 972         snd_via82xx_set_table_ptr(chip, viadev);
 973         outb(VIA_REG_TYPE_AUTOSTART |
 974              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 975              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 976              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 977              VIA_REG_TYPE_INT_EOL |
 978              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 979 }
 980
 981 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 982 {
 983         struct via82xx *chip = snd_pcm_substream_chip(substream);
 984         struct viadev *viadev = substream->runtime->private_data;
 985         struct snd_pcm_runtime *runtime = substream->runtime;
 986
 987         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 988         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 989         via686_setup_format(chip, viadev, runtime);
 990         return 0;
 991 }
 992
 993 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 994 {
 995         struct via82xx *chip = snd_pcm_substream_chip(substream);
 996         struct viadev *viadev = substream->runtime->private_data;
 997         struct snd_pcm_runtime *runtime = substream->runtime;
 998
 999         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1000         via686_setup_format(chip, viadev, runtime);
1001         return 0;
1002 }
1003
1004 /*
1005  * lock the current rate
1006  */
1007 static int via_lock_rate(struct via_rate_lock *rec, int rate)
1008 {
1009         int changed = 0;
1010
1011         spin_lock_irq(&rec->lock);
1012         if (rec->rate != rate) {
1013                 if (rec->rate && rec->used > 1) /* already set */
1014                         changed = -EINVAL;
1015                 else {
1016                         rec->rate = rate;
1017                         changed = 1;
1018                 }
1019         }
1020         spin_unlock_irq(&rec->lock);
1021         return changed;
1022 }
1023
1024 /*
1025  * prepare callback for DSX playback on via823x
1026  */
1027 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1028 {
1029         struct via82xx *chip = snd_pcm_substream_chip(substream);
1030         struct viadev *viadev = substream->runtime->private_data;
1031         struct snd_pcm_runtime *runtime = substream->runtime;
1032         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1033         int rate_changed;
1034         u32 rbits;
1035
1036         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1037                 return rate_changed;
1038         if (rate_changed)
1039                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1040                                   chip->no_vra ? 48000 : runtime->rate);
1041         if (chip->spdif_on && viadev->reg_offset == 0x30)
1042                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1043
1044         if (runtime->rate == 48000)
1045                 rbits = 0xfffff;
1046         else
1047                 rbits = (0x100000 / 48000) * runtime->rate +
1048                         ((0x100000 % 48000) * runtime->rate) / 48000;
1049         snd_BUG_ON(rbits & ~0xfffff);
1050         snd_via82xx_channel_reset(chip, viadev);
1051         snd_via82xx_set_table_ptr(chip, viadev);
1052         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1053              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1054         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1055              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1056         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1057              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1058              rbits | /* rate */
1059              0xff000000,    /* STOP index is never reached */
1060              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1061         udelay(20);
1062         snd_via82xx_codec_ready(chip, 0);
1063         return 0;
1064 }
1065
1066 /*
1067  * prepare callback for multi-channel playback on via823x
1068  */
1069 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1070 {
1071         struct via82xx *chip = snd_pcm_substream_chip(substream);
1072         struct viadev *viadev = substream->runtime->private_data;
1073         struct snd_pcm_runtime *runtime = substream->runtime;
1074         unsigned int slots;
1075         int fmt;
1076
1077         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1078                 return -EINVAL;
1079         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1080         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1081         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1082         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1083         snd_via82xx_channel_reset(chip, viadev);
1084         snd_via82xx_set_table_ptr(chip, viadev);
1085
1086         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1087                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1088         fmt |= runtime->channels << 4;
1089         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1090 #if 0
1091         if (chip->revision == VIA_REV_8233A)
1092                 slots = 0;
1093         else
1094 #endif
1095         {
1096                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1097                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1098                 switch (runtime->channels) {
1099                 case 1: slots = (1<<0) | (1<<4); break;
1100                 case 2: slots = (1<<0) | (2<<4); break;
1101                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1102                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1103                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1104                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1105                 default: slots = 0; break;
1106                 }
1107         }
1108         /* STOP index is never reached */
1109         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1110         udelay(20);
1111         snd_via82xx_codec_ready(chip, 0);
1112         return 0;
1113 }
1114
1115 /*
1116  * prepare callback for capture on via823x
1117  */
1118 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1119 {
1120         struct via82xx *chip = snd_pcm_substream_chip(substream);
1121         struct viadev *viadev = substream->runtime->private_data;
1122         struct snd_pcm_runtime *runtime = substream->runtime;
1123
1124         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1125                 return -EINVAL;
1126         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1127         snd_via82xx_channel_reset(chip, viadev);
1128         snd_via82xx_set_table_ptr(chip, viadev);
1129         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1130         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1131              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1132              0xff000000,    /* STOP index is never reached */
1133              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1134         udelay(20);
1135         snd_via82xx_codec_ready(chip, 0);
1136         return 0;
1137 }
1138
1139
1140 /*
1141  * pcm hardware definition, identical for both playback and capture
1142  */
1143 static struct snd_pcm_hardware snd_via82xx_hw =
1144 {
1145         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1146                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1147                                  SNDRV_PCM_INFO_MMAP_VALID |
1148                                  /* SNDRV_PCM_INFO_RESUME | */
1149                                  SNDRV_PCM_INFO_PAUSE),
1150         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1151         .rates =                SNDRV_PCM_RATE_48000,
1152         .rate_min =             48000,
1153         .rate_max =             48000,
1154         .channels_min =         1,
1155         .channels_max =         2,
1156         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1157         .period_bytes_min =     32,
1158         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1159         .periods_min =          2,
1160         .periods_max =          VIA_TABLE_SIZE / 2,
1161         .fifo_size =            0,
1162 };
1163
1164
1165 /*
1166  * open callback skeleton
1167  */
1168 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1169                                 struct snd_pcm_substream *substream)
1170 {
1171         struct snd_pcm_runtime *runtime = substream->runtime;
1172         int err;
1173         struct via_rate_lock *ratep;
1174
1175         runtime->hw = snd_via82xx_hw;
1176
1177         /* set the hw rate condition */
1178         ratep = &chip->rates[viadev->direction];
1179         spin_lock_irq(&ratep->lock);
1180         ratep->used++;
1181         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1182                 /* DXS#3 and spdif is on */
1183                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1184                 snd_pcm_limit_hw_rates(runtime);
1185         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1186                 /* fixed DXS playback rate */
1187                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1188                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1189         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1190                 /* use full SRC capabilities of DXS */
1191                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1192                                      SNDRV_PCM_RATE_8000_48000);
1193                 runtime->hw.rate_min = 8000;
1194                 runtime->hw.rate_max = 48000;
1195         } else if (! ratep->rate) {
1196                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1197                 runtime->hw.rates = chip->ac97->rates[idx];
1198                 snd_pcm_limit_hw_rates(runtime);
1199         } else {
1200                 /* a fixed rate */
1201                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1202                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1203         }
1204         spin_unlock_irq(&ratep->lock);
1205
1206         /* we may remove following constaint when we modify table entries
1207            in interrupt */
1208         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1209                 return err;
1210
1211         runtime->private_data = viadev;
1212         viadev->substream = substream;
1213
1214         return 0;
1215 }
1216
1217
1218 /*
1219  * open callback for playback on via686 and via823x DSX
1220  */
1221 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1222 {
1223         struct via82xx *chip = snd_pcm_substream_chip(substream);
1224         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1225         int err;
1226
1227         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1228                 return err;
1229         return 0;
1230 }
1231
1232 /*
1233  * open callback for playback on via823x multi-channel
1234  */
1235 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1236 {
1237         struct via82xx *chip = snd_pcm_substream_chip(substream);
1238         struct viadev *viadev = &chip->devs[chip->multi_devno];
1239         int err;
1240         /* channels constraint for VIA8233A
1241          * 3 and 5 channels are not supported
1242          */
1243         static unsigned int channels[] = {
1244                 1, 2, 4, 6
1245         };
1246         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1247                 .count = ARRAY_SIZE(channels),
1248                 .list = channels,
1249                 .mask = 0,
1250         };
1251
1252         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1253                 return err;
1254         substream->runtime->hw.channels_max = 6;
1255         if (chip->revision == VIA_REV_8233A)
1256                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1257                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1258                                            &hw_constraints_channels);
1259         return 0;
1260 }
1261
1262 /*
1263  * open callback for capture on via686 and via823x
1264  */
1265 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1266 {
1267         struct via82xx *chip = snd_pcm_substream_chip(substream);
1268         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1269
1270         return snd_via82xx_pcm_open(chip, viadev, substream);
1271 }
1272
1273 /*
1274  * close callback
1275  */
1276 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1277 {
1278         struct via82xx *chip = snd_pcm_substream_chip(substream);
1279         struct viadev *viadev = substream->runtime->private_data;
1280         struct via_rate_lock *ratep;
1281
1282         /* release the rate lock */
1283         ratep = &chip->rates[viadev->direction];
1284         spin_lock_irq(&ratep->lock);
1285         ratep->used--;
1286         if (! ratep->used)
1287                 ratep->rate = 0;
1288         spin_unlock_irq(&ratep->lock);
1289         if (! ratep->rate) {
1290                 if (! viadev->direction) {
1291                         snd_ac97_update_power(chip->ac97,
1292                                               AC97_PCM_FRONT_DAC_RATE, 0);
1293                         snd_ac97_update_power(chip->ac97,
1294                                               AC97_PCM_SURR_DAC_RATE, 0);
1295                         snd_ac97_update_power(chip->ac97,
1296                                               AC97_PCM_LFE_DAC_RATE, 0);
1297                 } else
1298                         snd_ac97_update_power(chip->ac97,
1299                                               AC97_PCM_LR_ADC_RATE, 0);
1300         }
1301         viadev->substream = NULL;
1302         return 0;
1303 }
1304
1305
1306 /* via686 playback callbacks */
1307 static struct snd_pcm_ops snd_via686_playback_ops = {
1308         .open =         snd_via82xx_playback_open,
1309         .close =        snd_via82xx_pcm_close,
1310         .ioctl =        snd_pcm_lib_ioctl,
1311         .hw_params =    snd_via82xx_hw_params,
1312         .hw_free =      snd_via82xx_hw_free,
1313         .prepare =      snd_via686_playback_prepare,
1314         .trigger =      snd_via82xx_pcm_trigger,
1315         .pointer =      snd_via686_pcm_pointer,
1316         .page =         snd_pcm_sgbuf_ops_page,
1317 };
1318
1319 /* via686 capture callbacks */
1320 static struct snd_pcm_ops snd_via686_capture_ops = {
1321         .open =         snd_via82xx_capture_open,
1322         .close =        snd_via82xx_pcm_close,
1323         .ioctl =        snd_pcm_lib_ioctl,
1324         .hw_params =    snd_via82xx_hw_params,
1325         .hw_free =      snd_via82xx_hw_free,
1326         .prepare =      snd_via686_capture_prepare,
1327         .trigger =      snd_via82xx_pcm_trigger,
1328         .pointer =      snd_via686_pcm_pointer,
1329         .page =         snd_pcm_sgbuf_ops_page,
1330 };
1331
1332 /* via823x DSX playback callbacks */
1333 static struct snd_pcm_ops snd_via8233_playback_ops = {
1334         .open =         snd_via82xx_playback_open,
1335         .close =        snd_via82xx_pcm_close,
1336         .ioctl =        snd_pcm_lib_ioctl,
1337         .hw_params =    snd_via82xx_hw_params,
1338         .hw_free =      snd_via82xx_hw_free,
1339         .prepare =      snd_via8233_playback_prepare,
1340         .trigger =      snd_via82xx_pcm_trigger,
1341         .pointer =      snd_via8233_pcm_pointer,
1342         .page =         snd_pcm_sgbuf_ops_page,
1343 };
1344
1345 /* via823x multi-channel playback callbacks */
1346 static struct snd_pcm_ops snd_via8233_multi_ops = {
1347         .open =         snd_via8233_multi_open,
1348         .close =        snd_via82xx_pcm_close,
1349         .ioctl =        snd_pcm_lib_ioctl,
1350         .hw_params =    snd_via82xx_hw_params,
1351         .hw_free =      snd_via82xx_hw_free,
1352         .prepare =      snd_via8233_multi_prepare,
1353         .trigger =      snd_via82xx_pcm_trigger,
1354         .pointer =      snd_via8233_pcm_pointer,
1355         .page =         snd_pcm_sgbuf_ops_page,
1356 };
1357
1358 /* via823x capture callbacks */
1359 static struct snd_pcm_ops snd_via8233_capture_ops = {
1360         .open =         snd_via82xx_capture_open,
1361         .close =        snd_via82xx_pcm_close,
1362         .ioctl =        snd_pcm_lib_ioctl,
1363         .hw_params =    snd_via82xx_hw_params,
1364         .hw_free =      snd_via82xx_hw_free,
1365         .prepare =      snd_via8233_capture_prepare,
1366         .trigger =      snd_via82xx_pcm_trigger,
1367         .pointer =      snd_via8233_pcm_pointer,
1368         .page =         snd_pcm_sgbuf_ops_page,
1369 };
1370
1371
1372 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1373                         int shadow_pos, int direction)
1374 {
1375         chip->devs[idx].reg_offset = reg_offset;
1376         chip->devs[idx].shadow_shift = shadow_pos * 4;
1377         chip->devs[idx].direction = direction;
1378         chip->devs[idx].port = chip->port + reg_offset;
1379 }
1380
1381 /*
1382  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1383  */
1384 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1385 {
1386         struct snd_pcm *pcm;
1387         int i, err;
1388
1389         chip->playback_devno = 0;       /* x 4 */
1390         chip->multi_devno = 4;          /* x 1 */
1391         chip->capture_devno = 5;        /* x 2 */
1392         chip->num_devs = 7;
1393         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1394
1395         /* PCM #0:  4 DSX playbacks and 1 capture */
1396         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1397         if (err < 0)
1398                 return err;
1399         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1400         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1401         pcm->private_data = chip;
1402         strcpy(pcm->name, chip->card->shortname);
1403         chip->pcms[0] = pcm;
1404         /* set up playbacks */
1405         for (i = 0; i < 4; i++)
1406                 init_viadev(chip, i, 0x10 * i, i, 0);
1407         /* capture */
1408         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1409
1410         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1411                                               snd_dma_pci_data(chip->pci),
1412                                               64*1024, VIA_MAX_BUFSIZE);
1413
1414         /* PCM #1:  multi-channel playback and 2nd capture */
1415         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1416         if (err < 0)
1417                 return err;
1418         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1419         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1420         pcm->private_data = chip;
1421         strcpy(pcm->name, chip->card->shortname);
1422         chip->pcms[1] = pcm;
1423         /* set up playback */
1424         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1425         /* set up capture */
1426         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1427
1428         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1429                                               snd_dma_pci_data(chip->pci),
1430                                               64*1024, VIA_MAX_BUFSIZE);
1431         return 0;
1432 }
1433
1434 /*
1435  * create pcm instances for VIA8233A
1436  */
1437 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1438 {
1439         struct snd_pcm *pcm;
1440         int err;
1441
1442         chip->multi_devno = 0;
1443         chip->playback_devno = 1;
1444         chip->capture_devno = 2;
1445         chip->num_devs = 3;
1446         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1447
1448         /* PCM #0:  multi-channel playback and capture */
1449         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1450         if (err < 0)
1451                 return err;
1452         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1453         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1454         pcm->private_data = chip;
1455         strcpy(pcm->name, chip->card->shortname);
1456         chip->pcms[0] = pcm;
1457         /* set up playback */
1458         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1459         /* capture */
1460         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1461
1462         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1463                                               snd_dma_pci_data(chip->pci),
1464                                               64*1024, VIA_MAX_BUFSIZE);
1465
1466         /* SPDIF supported? */
1467         if (! ac97_can_spdif(chip->ac97))
1468                 return 0;
1469
1470         /* PCM #1:  DXS3 playback (for spdif) */
1471         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1472         if (err < 0)
1473                 return err;
1474         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1475         pcm->private_data = chip;
1476         strcpy(pcm->name, chip->card->shortname);
1477         chip->pcms[1] = pcm;
1478         /* set up playback */
1479         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1480
1481         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1482                                               snd_dma_pci_data(chip->pci),
1483                                               64*1024, VIA_MAX_BUFSIZE);
1484         return 0;
1485 }
1486
1487 /*
1488  * create a pcm instance for via686a/b
1489  */
1490 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1491 {
1492         struct snd_pcm *pcm;
1493         int err;
1494
1495         chip->playback_devno = 0;
1496         chip->capture_devno = 1;
1497         chip->num_devs = 2;
1498         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1499
1500         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1501         if (err < 0)
1502                 return err;
1503         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1504         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1505         pcm->private_data = chip;
1506         strcpy(pcm->name, chip->card->shortname);
1507         chip->pcms[0] = pcm;
1508         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1509         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1510
1511         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1512                                               snd_dma_pci_data(chip->pci),
1513                                               64*1024, VIA_MAX_BUFSIZE);
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, -4650, 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 = 0x1019,
1762                 .subdevice = 0x1841,
1763                 .name = "ECS K7VTA3",
1764                 .type = AC97_TUNE_HP_ONLY
1765         },
1766         {
1767                 .subvendor = 0x1849,
1768                 .subdevice = 0x3059,
1769                 .name = "ASRock K7VM2",
1770                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1771         },
1772         {
1773                 .subvendor = 0x14cd,
1774                 .subdevice = 0x7002,
1775                 .name = "Unknown",
1776                 .type = AC97_TUNE_ALC_JACK
1777         },
1778         {
1779                 .subvendor = 0x1071,
1780                 .subdevice = 0x8590,
1781                 .name = "Mitac Mobo",
1782                 .type = AC97_TUNE_ALC_JACK
1783         },
1784         {
1785                 .subvendor = 0x161f,
1786                 .subdevice = 0x202b,
1787                 .name = "Arima Notebook",
1788                 .type = AC97_TUNE_HP_ONLY,
1789         },
1790         {
1791                 .subvendor = 0x161f,
1792                 .subdevice = 0x2032,
1793                 .name = "Targa Traveller 811",
1794                 .type = AC97_TUNE_HP_ONLY,
1795         },
1796         {
1797                 .subvendor = 0x161f,
1798                 .subdevice = 0x2032,
1799                 .name = "m680x",
1800                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1801         },
1802         {
1803                 .subvendor = 0x1297,
1804                 .subdevice = 0xa232,
1805                 .name = "Shuttle AK32VN",
1806                 .type = AC97_TUNE_HP_ONLY
1807         },
1808         { } /* terminator */
1809 };
1810
1811 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1812 {
1813         struct snd_ac97_template ac97;
1814         int err;
1815         static struct snd_ac97_bus_ops ops = {
1816                 .write = snd_via82xx_codec_write,
1817                 .read = snd_via82xx_codec_read,
1818                 .wait = snd_via82xx_codec_wait,
1819         };
1820
1821         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1822                 return err;
1823         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1824         chip->ac97_bus->clock = chip->ac97_clock;
1825
1826         memset(&ac97, 0, sizeof(ac97));
1827         ac97.private_data = chip;
1828         ac97.private_free = snd_via82xx_mixer_free_ac97;
1829         ac97.pci = chip->pci;
1830         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1831         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1832                 return err;
1833
1834         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1835
1836         if (chip->chip_type != TYPE_VIA686) {
1837                 /* use slot 10/11 */
1838                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1839         }
1840
1841         return 0;
1842 }
1843
1844 #ifdef SUPPORT_JOYSTICK
1845 #define JOYSTICK_ADDR   0x200
1846 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1847 {
1848         struct gameport *gp;
1849         struct resource *r;
1850
1851         if (!joystick)
1852                 return -ENODEV;
1853
1854         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1855         if (!r) {
1856                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1857                        JOYSTICK_ADDR);
1858                 return -EBUSY;
1859         }
1860
1861         chip->gameport = gp = gameport_allocate_port();
1862         if (!gp) {
1863                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1864                 release_and_free_resource(r);
1865                 return -ENOMEM;
1866         }
1867
1868         gameport_set_name(gp, "VIA686 Gameport");
1869         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1870         gameport_set_dev_parent(gp, &chip->pci->dev);
1871         gp->io = JOYSTICK_ADDR;
1872         gameport_set_port_data(gp, r);
1873
1874         /* Enable legacy joystick port */
1875         *legacy |= VIA_FUNC_ENABLE_GAME;
1876         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1877
1878         gameport_register_port(chip->gameport);
1879
1880         return 0;
1881 }
1882
1883 static void snd_via686_free_gameport(struct via82xx *chip)
1884 {
1885         if (chip->gameport) {
1886                 struct resource *r = gameport_get_port_data(chip->gameport);
1887
1888                 gameport_unregister_port(chip->gameport);
1889                 chip->gameport = NULL;
1890                 release_and_free_resource(r);
1891         }
1892 }
1893 #else
1894 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1895 {
1896         return -ENOSYS;
1897 }
1898 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1899 #endif
1900
1901
1902 /*
1903  *
1904  */
1905
1906 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1907 {
1908         int i, err, caps;
1909         unsigned char val;
1910
1911         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1912         for (i = 0; i < caps; i++) {
1913                 snd_via8233_capture_source.index = i;
1914                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1915                 if (err < 0)
1916                         return err;
1917         }
1918         if (ac97_can_spdif(chip->ac97)) {
1919                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1920                 if (err < 0)
1921                         return err;
1922         }
1923         if (chip->chip_type != TYPE_VIA8233A) {
1924                 /* when no h/w PCM volume control is found, use DXS volume control
1925                  * as the PCM vol control
1926                  */
1927                 struct snd_ctl_elem_id sid;
1928                 memset(&sid, 0, sizeof(sid));
1929                 strcpy(sid.name, "PCM Playback Volume");
1930                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1931                 if (! snd_ctl_find_id(chip->card, &sid)) {
1932                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1933                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1934                         if (err < 0)
1935                                 return err;
1936                 }
1937                 else /* Using DXS when PCM emulation is enabled is really weird */
1938                 {
1939                         /* Standalone DXS controls */
1940                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1941                         if (err < 0)
1942                                 return err;
1943                 }
1944         }
1945         /* select spdif data slot 10/11 */
1946         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1947         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1948         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1949         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1950
1951         return 0;
1952 }
1953
1954 static int __devinit snd_via686_init_misc(struct via82xx *chip)
1955 {
1956         unsigned char legacy, legacy_cfg;
1957         int rev_h = 0;
1958
1959         legacy = chip->old_legacy;
1960         legacy_cfg = chip->old_legacy_cfg;
1961         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1962         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1963         if (chip->revision >= VIA_REV_686_H) {
1964                 rev_h = 1;
1965                 if (mpu_port >= 0x200) {        /* force MIDI */
1966                         mpu_port &= 0xfffc;
1967                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1968 #ifdef CONFIG_PM
1969                         chip->mpu_port_saved = mpu_port;
1970 #endif
1971                 } else {
1972                         mpu_port = pci_resource_start(chip->pci, 2);
1973                 }
1974         } else {
1975                 switch (mpu_port) {     /* force MIDI */
1976                 case 0x300:
1977                 case 0x310:
1978                 case 0x320:
1979                 case 0x330:
1980                         legacy_cfg &= ~(3 << 2);
1981                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1982                         break;
1983                 default:                        /* no, use BIOS settings */
1984                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1985                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1986                         break;
1987                 }
1988         }
1989         if (mpu_port >= 0x200 &&
1990             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1991             != NULL) {
1992                 if (rev_h)
1993                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1994                 legacy |= VIA_FUNC_ENABLE_MIDI;
1995         } else {
1996                 if (rev_h)
1997                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1998                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1999                 mpu_port = 0;
2000         }
2001
2002         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2003         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2004         if (chip->mpu_res) {
2005                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2006                                         mpu_port, MPU401_INFO_INTEGRATED,
2007                                         chip->irq, 0, &chip->rmidi) < 0) {
2008                         printk(KERN_WARNING "unable to initialize MPU-401"
2009                                " at 0x%lx, skipping\n", mpu_port);
2010                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2011                 } else {
2012                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2013                 }
2014                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2015         }
2016
2017         snd_via686_create_gameport(chip, &legacy);
2018
2019 #ifdef CONFIG_PM
2020         chip->legacy_saved = legacy;
2021         chip->legacy_cfg_saved = legacy_cfg;
2022 #endif
2023
2024         return 0;
2025 }
2026
2027
2028 /*
2029  * proc interface
2030  */
2031 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2032                                   struct snd_info_buffer *buffer)
2033 {
2034         struct via82xx *chip = entry->private_data;
2035         int i;
2036
2037         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2038         for (i = 0; i < 0xa0; i += 4) {
2039                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2040         }
2041 }
2042
2043 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2044 {
2045         struct snd_info_entry *entry;
2046
2047         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2048                 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2049 }
2050
2051 /*
2052  *
2053  */
2054
2055 static int snd_via82xx_chip_init(struct via82xx *chip)
2056 {
2057         unsigned int val;
2058         unsigned long end_time;
2059         unsigned char pval;
2060
2061 #if 0 /* broken on K7M? */
2062         if (chip->chip_type == TYPE_VIA686)
2063                 /* disable all legacy ports */
2064                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2065 #endif
2066         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2067         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2068                 /* deassert ACLink reset, force SYNC */
2069                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2070                                       VIA_ACLINK_CTRL_ENABLE |
2071                                       VIA_ACLINK_CTRL_RESET |
2072                                       VIA_ACLINK_CTRL_SYNC);
2073                 udelay(100);
2074 #if 1 /* FIXME: should we do full reset here for all chip models? */
2075                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2076                 udelay(100);
2077 #else
2078                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2079                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2080                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2081                 udelay(2);
2082 #endif
2083                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2084                 /* note - FM data out has trouble with non VRA codecs !! */
2085                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2086                 udelay(100);
2087         }
2088
2089         /* Make sure VRA is enabled, in case we didn't do a
2090          * complete codec reset, above */
2091         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2092         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2093                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2094                 /* note - FM data out has trouble with non VRA codecs !! */
2095                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2096                 udelay(100);
2097         }
2098
2099         /* wait until codec ready */
2100         end_time = jiffies + msecs_to_jiffies(750);
2101         do {
2102                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2103                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2104                         break;
2105                 schedule_timeout_uninterruptible(1);
2106         } while (time_before(jiffies, end_time));
2107
2108         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2109                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2110
2111 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2112         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2113                                  VIA_REG_AC97_SECONDARY_VALID |
2114                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2115         end_time = jiffies + msecs_to_jiffies(750);
2116         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2117                                  VIA_REG_AC97_SECONDARY_VALID |
2118                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2119         do {
2120                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2121                         chip->ac97_secondary = 1;
2122                         goto __ac97_ok2;
2123                 }
2124                 schedule_timeout_uninterruptible(1);
2125         } while (time_before(jiffies, end_time));
2126         /* This is ok, the most of motherboards have only one codec */
2127
2128       __ac97_ok2:
2129 #endif
2130
2131         if (chip->chip_type == TYPE_VIA686) {
2132                 /* route FM trap to IRQ, disable FM trap */
2133                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2134                 /* disable all GPI interrupts */
2135                 outl(0, VIAREG(chip, GPI_INTR));
2136         }
2137
2138         if (chip->chip_type != TYPE_VIA686) {
2139                 /* Workaround for Award BIOS bug:
2140                  * DXS channels don't work properly with VRA if MC97 is disabled.
2141                  */
2142                 struct pci_dev *pci;
2143                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2144                 if (pci) {
2145                         unsigned char data;
2146                         pci_read_config_byte(pci, 0x44, &data);
2147                         pci_write_config_byte(pci, 0x44, data | 0x40);
2148                         pci_dev_put(pci);
2149                 }
2150         }
2151
2152         if (chip->chip_type != TYPE_VIA8233A) {
2153                 int i, idx;
2154                 for (idx = 0; idx < 4; idx++) {
2155                         unsigned long port = chip->port + 0x10 * idx;
2156                         for (i = 0; i < 2; i++) {
2157                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2158                                 outb(chip->playback_volume_c[i],
2159                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2160                         }
2161                 }
2162         }
2163
2164         return 0;
2165 }
2166
2167 #ifdef CONFIG_PM
2168 /*
2169  * power management
2170  */
2171 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2172 {
2173         struct snd_card *card = pci_get_drvdata(pci);
2174         struct via82xx *chip = card->private_data;
2175         int i;
2176
2177         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2178         for (i = 0; i < 2; i++)
2179                 snd_pcm_suspend_all(chip->pcms[i]);
2180         for (i = 0; i < chip->num_devs; i++)
2181                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2182         synchronize_irq(chip->irq);
2183         snd_ac97_suspend(chip->ac97);
2184
2185         /* save misc values */
2186         if (chip->chip_type != TYPE_VIA686) {
2187                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2188                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2189                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2190         }
2191
2192         pci_disable_device(pci);
2193         pci_save_state(pci);
2194         pci_set_power_state(pci, pci_choose_state(pci, state));
2195         return 0;
2196 }
2197
2198 static int snd_via82xx_resume(struct pci_dev *pci)
2199 {
2200         struct snd_card *card = pci_get_drvdata(pci);
2201         struct via82xx *chip = card->private_data;
2202         int i;
2203
2204         pci_set_power_state(pci, PCI_D0);
2205         pci_restore_state(pci);
2206         if (pci_enable_device(pci) < 0) {
2207                 printk(KERN_ERR "via82xx: pci_enable_device failed, "
2208                        "disabling device\n");
2209                 snd_card_disconnect(card);
2210                 return -EIO;
2211         }
2212         pci_set_master(pci);
2213
2214         snd_via82xx_chip_init(chip);
2215
2216         if (chip->chip_type == TYPE_VIA686) {
2217                 if (chip->mpu_port_saved)
2218                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2219                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2220                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2221         } else {
2222                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2223                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2224                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2225         }
2226
2227         snd_ac97_resume(chip->ac97);
2228
2229         for (i = 0; i < chip->num_devs; i++)
2230                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2231
2232         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2233         return 0;
2234 }
2235 #endif /* CONFIG_PM */
2236
2237 static int snd_via82xx_free(struct via82xx *chip)
2238 {
2239         unsigned int i;
2240
2241         if (chip->irq < 0)
2242                 goto __end_hw;
2243         /* disable interrupts */
2244         for (i = 0; i < chip->num_devs; i++)
2245                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2246
2247         if (chip->irq >= 0)
2248                 free_irq(chip->irq, chip);
2249  __end_hw:
2250         release_and_free_resource(chip->mpu_res);
2251         pci_release_regions(chip->pci);
2252
2253         if (chip->chip_type == TYPE_VIA686) {
2254                 snd_via686_free_gameport(chip);
2255                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2256                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2257         }
2258         pci_disable_device(chip->pci);
2259         kfree(chip);
2260         return 0;
2261 }
2262
2263 static int snd_via82xx_dev_free(struct snd_device *device)
2264 {
2265         struct via82xx *chip = device->device_data;
2266         return snd_via82xx_free(chip);
2267 }
2268
2269 static int __devinit snd_via82xx_create(struct snd_card *card,
2270                                         struct pci_dev *pci,
2271                                         int chip_type,
2272                                         int revision,
2273                                         unsigned int ac97_clock,
2274                                         struct via82xx ** r_via)
2275 {
2276         struct via82xx *chip;
2277         int err;
2278         static struct snd_device_ops ops = {
2279                 .dev_free =     snd_via82xx_dev_free,
2280         };
2281
2282         if ((err = pci_enable_device(pci)) < 0)
2283                 return err;
2284
2285         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2286                 pci_disable_device(pci);
2287                 return -ENOMEM;
2288         }
2289
2290         chip->chip_type = chip_type;
2291         chip->revision = revision;
2292
2293         spin_lock_init(&chip->reg_lock);
2294         spin_lock_init(&chip->rates[0].lock);
2295         spin_lock_init(&chip->rates[1].lock);
2296         chip->card = card;
2297         chip->pci = pci;
2298         chip->irq = -1;
2299
2300         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2301         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2302         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2303                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2304
2305         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2306                 kfree(chip);
2307                 pci_disable_device(pci);
2308                 return err;
2309         }
2310         chip->port = pci_resource_start(pci, 0);
2311         if (request_irq(pci->irq,
2312                         chip_type == TYPE_VIA8233 ?
2313                         snd_via8233_interrupt : snd_via686_interrupt,
2314                         IRQF_SHARED,
2315                         card->driver, chip)) {
2316                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2317                 snd_via82xx_free(chip);
2318                 return -EBUSY;
2319         }
2320         chip->irq = pci->irq;
2321         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2322                 chip->ac97_clock = ac97_clock;
2323         synchronize_irq(chip->irq);
2324
2325         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2326                 snd_via82xx_free(chip);
2327                 return err;
2328         }
2329
2330         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2331                 snd_via82xx_free(chip);
2332                 return err;
2333         }
2334
2335         /* The 8233 ac97 controller does not implement the master bit
2336          * in the pci command register. IMHO this is a violation of the PCI spec.
2337          * We call pci_set_master here because it does not hurt. */
2338         pci_set_master(pci);
2339
2340         snd_card_set_dev(card, &pci->dev);
2341
2342         *r_via = chip;
2343         return 0;
2344 }
2345
2346 struct via823x_info {
2347         int revision;
2348         char *name;
2349         int type;
2350 };
2351 static struct via823x_info via823x_cards[] __devinitdata = {
2352         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2353         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2354         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2355         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2356         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2357         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2358         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2359 };
2360
2361 /*
2362  * auto detection of DXS channel supports.
2363  */
2364
2365 static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2366         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2367         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2368         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2369         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2370         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2371         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2372         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2373         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2374         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2375         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2376         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2377         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2378         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2379         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2380         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2381         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2382         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2383         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2384         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2385         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2386         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2387         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2388         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2389         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2390         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2391         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2392         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2393         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2394         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2395         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2396         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2397         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2398         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2399         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2400         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2401         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2402         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2403         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2404         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2405         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2406         { } /* terminator */
2407 };
2408
2409 static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2410 {
2411         const struct snd_pci_quirk *w;
2412
2413         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2414         if (w) {
2415                 snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2416                             w->name);
2417                 return w->value;
2418         }
2419
2420         /* for newer revision, default to DXS_SRC */
2421         if (revision >= VIA_REV_8235)
2422                 return VIA_DXS_SRC;
2423
2424         /*
2425          * not detected, try 48k rate only to be sure.
2426          */
2427         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2428         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2429         printk(KERN_INFO "         and report if it works on your machine.\n");
2430         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2431         return VIA_DXS_48K;
2432 };
2433
2434 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2435                                        const struct pci_device_id *pci_id)
2436 {
2437         struct snd_card *card;
2438         struct via82xx *chip;
2439         int chip_type = 0, card_type;
2440         unsigned int i;
2441         int err;
2442
2443         err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2444         if (err < 0)
2445                 return err;
2446
2447         card_type = pci_id->driver_data;
2448         switch (card_type) {
2449         case TYPE_CARD_VIA686:
2450                 strcpy(card->driver, "VIA686A");
2451                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2452                 chip_type = TYPE_VIA686;
2453                 break;
2454         case TYPE_CARD_VIA8233:
2455                 chip_type = TYPE_VIA8233;
2456                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2457                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2458                         if (pci->revision == via823x_cards[i].revision) {
2459                                 chip_type = via823x_cards[i].type;
2460                                 strcpy(card->shortname, via823x_cards[i].name);
2461                                 break;
2462                         }
2463                 }
2464                 if (chip_type != TYPE_VIA8233A) {
2465                         if (dxs_support == VIA_DXS_AUTO)
2466                                 dxs_support = check_dxs_list(pci, pci->revision);
2467                         /* force to use VIA8233 or 8233A model according to
2468                          * dxs_support module option
2469                          */
2470                         if (dxs_support == VIA_DXS_DISABLE)
2471                                 chip_type = TYPE_VIA8233A;
2472                         else
2473                                 chip_type = TYPE_VIA8233;
2474                 }
2475                 if (chip_type == TYPE_VIA8233A)
2476                         strcpy(card->driver, "VIA8233A");
2477                 else if (pci->revision >= VIA_REV_8237)
2478                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2479                 else
2480                         strcpy(card->driver, "VIA8233");
2481                 break;
2482         default:
2483                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2484                 err = -EINVAL;
2485                 goto __error;
2486         }
2487
2488         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2489                                       ac97_clock, &chip)) < 0)
2490                 goto __error;
2491         card->private_data = chip;
2492         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2493                 goto __error;
2494
2495         if (chip_type == TYPE_VIA686) {
2496                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2497                     (err = snd_via686_init_misc(chip)) < 0)
2498                         goto __error;
2499         } else {
2500                 if (chip_type == TYPE_VIA8233A) {
2501                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2502                                 goto __error;
2503                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2504                 } else {
2505                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2506                                 goto __error;
2507                         if (dxs_support == VIA_DXS_48K)
2508                                 chip->dxs_fixed = 1;
2509                         else if (dxs_support == VIA_DXS_NO_VRA)
2510                                 chip->no_vra = 1;
2511                         else if (dxs_support == VIA_DXS_SRC) {
2512                                 chip->no_vra = 1;
2513                                 chip->dxs_src = 1;
2514                         }
2515                 }
2516                 if ((err = snd_via8233_init_misc(chip)) < 0)
2517                         goto __error;
2518         }
2519
2520         /* disable interrupts */
2521         for (i = 0; i < chip->num_devs; i++)
2522                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2523
2524         snprintf(card->longname, sizeof(card->longname),
2525                  "%s with %s at %#lx, irq %d", card->shortname,
2526                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2527
2528         snd_via82xx_proc_init(chip);
2529
2530         if ((err = snd_card_register(card)) < 0) {
2531                 snd_card_free(card);
2532                 return err;
2533         }
2534         pci_set_drvdata(pci, card);
2535         return 0;
2536
2537  __error:
2538         snd_card_free(card);
2539         return err;
2540 }
2541
2542 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2543 {
2544         snd_card_free(pci_get_drvdata(pci));
2545         pci_set_drvdata(pci, NULL);
2546 }
2547
2548 static struct pci_driver driver = {
2549         .name = "VIA 82xx Audio",
2550         .id_table = snd_via82xx_ids,
2551         .probe = snd_via82xx_probe,
2552         .remove = __devexit_p(snd_via82xx_remove),
2553 #ifdef CONFIG_PM
2554         .suspend = snd_via82xx_suspend,
2555         .resume = snd_via82xx_resume,
2556 #endif
2557 };
2558
2559 static int __init alsa_card_via82xx_init(void)
2560 {
2561         return pci_register_driver(&driver);
2562 }
2563
2564 static void __exit alsa_card_via82xx_exit(void)
2565 {
2566         pci_unregister_driver(&driver);
2567 }
2568
2569 module_init(alsa_card_via82xx_init)
2570 module_exit(alsa_card_via82xx_exit)