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

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  */
  45
  46 #include <sound/driver.h>
  47 #include <asm/io.h>
  48 #include <linux/delay.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/init.h>
  51 #include <linux/pci.h>
  52 #include <linux/slab.h>
  53 #include <linux/gameport.h>
  54 #include <linux/moduleparam.h>
  55 #include <sound/core.h>
  56 #include <sound/pcm.h>
  57 #include <sound/pcm_params.h>
  58 #include <sound/info.h>
  59 #include <sound/ac97_codec.h>
  60 #include <sound/mpu401.h>
  61 #include <sound/initval.h>
  62
  63 #if 0
  64 #define POINTER_DEBUG
  65 #endif
  66
  67 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  68 MODULE_DESCRIPTION("VIA VT82xx audio");
  69 MODULE_LICENSE("GPL");
  70 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  71
  72 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  73 #define SUPPORT_JOYSTICK 1
  74 #endif
  75
  76 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  77 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  78 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  79 static long mpu_port[SNDRV_CARDS];
  80 #ifdef SUPPORT_JOYSTICK
  81 static int joystick[SNDRV_CARDS];
  82 #endif
  83 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
  84 static char *ac97_quirk[SNDRV_CARDS];
  85 static int dxs_support[SNDRV_CARDS];
  86
  87 module_param_array(index, int, NULL, 0444);
  88 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  89 module_param_array(id, charp, NULL, 0444);
  90 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  91 module_param_array(enable, bool, NULL, 0444);
  92 MODULE_PARM_DESC(enable, "Enable audio part of VIA 82xx bridge.");
  93 module_param_array(mpu_port, long, NULL, 0444);
  94 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  95 #ifdef SUPPORT_JOYSTICK
  96 module_param_array(joystick, bool, NULL, 0444);
  97 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  98 #endif
  99 module_param_array(ac97_clock, int, NULL, 0444);
 100 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 101 module_param_array(ac97_quirk, charp, NULL, 0444);
 102 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 103 module_param_array(dxs_support, int, NULL, 0444);
 104 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA)");
 105
 106
 107 /* pci ids */
 108 #ifndef PCI_DEVICE_ID_VIA_82C686_5
 109 #define PCI_DEVICE_ID_VIA_82C686_5      0x3058
 110 #endif
 111 #ifndef PCI_DEVICE_ID_VIA_8233_5
 112 #define PCI_DEVICE_ID_VIA_8233_5        0x3059
 113 #endif
 114
 115 /* revision numbers for via686 */
 116 #define VIA_REV_686_A           0x10
 117 #define VIA_REV_686_B           0x11
 118 #define VIA_REV_686_C           0x12
 119 #define VIA_REV_686_D           0x13
 120 #define VIA_REV_686_E           0x14
 121 #define VIA_REV_686_H           0x20
 122
 123 /* revision numbers for via8233 */
 124 #define VIA_REV_PRE_8233        0x10    /* not in market */
 125 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 126 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 127 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 128 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 129 #define VIA_REV_8237            0x60
 130
 131 /*
 132  *  Direct registers
 133  */
 134
 135 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 136 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 137
 138 /* common offsets */
 139 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 140 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 141 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 142 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 143 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 144 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 145 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 146 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 147 #define   VIA_REG_CTRL_START            0x80    /* WO */
 148 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 149 #define   VIA_REG_CTRL_AUTOSTART        0x20
 150 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 151 #define   VIA_REG_CTRL_INT_STOP         0x04
 152 #define   VIA_REG_CTRL_INT_EOL          0x02
 153 #define   VIA_REG_CTRL_INT_FLAG         0x01
 154 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 155 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 156 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 157 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 158 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 159 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 160 #define   VIA_REG_TYPE_INT_LLINE        0x00
 161 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 162 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 163 #define   VIA_REG_TYPE_INT_MASK         0x0c
 164 #define   VIA_REG_TYPE_INT_EOL          0x02
 165 #define   VIA_REG_TYPE_INT_FLAG         0x01
 166 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 167 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 168 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 169 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 170 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 171 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 172 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 173
 174 #define DEFINE_VIA_REGSET(name,val) \
 175 enum {\
 176         VIA_REG_##name##_STATUS         = (val),\
 177         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 178         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 179         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 180         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 181         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 182         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 183 }
 184
 185 /* playback block */
 186 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 187 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 188 DEFINE_VIA_REGSET(FM, 0x20);
 189
 190 /* AC'97 */
 191 #define VIA_REG_AC97                    0x80    /* dword */
 192 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 193 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 194 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 195 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 196 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 197 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 198 #define   VIA_REG_AC97_BUSY             (1<<24)
 199 #define   VIA_REG_AC97_READ             (1<<23)
 200 #define   VIA_REG_AC97_CMD_SHIFT        16
 201 #define   VIA_REG_AC97_CMD_MASK         0x7e
 202 #define   VIA_REG_AC97_DATA_SHIFT       0
 203 #define   VIA_REG_AC97_DATA_MASK        0xffff
 204
 205 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 206 /* via686 */
 207 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 208 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 209 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 210 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 211 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 212 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 213 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 214 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 215 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 216 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 217 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 218 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 219 /* via8233 */
 220 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 221 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 222 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 223 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 224 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 225 #define   VIA8233_REG_SGD_CHAN_SDX      0
 226 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 227 #define   VIA8233_REG_SGD_CHAN_REC      6
 228 #define   VIA8233_REG_SGD_CHAN_REC1     7
 229
 230 #define VIA_REG_GPI_STATUS              0x88
 231 #define VIA_REG_GPI_INTR                0x8c
 232
 233 /* multi-channel and capture registers for via8233 */
 234 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 235 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 236
 237 /* via8233-specific registers */
 238 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 239 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 240 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 241 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 242 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 243 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 244 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 245 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 246
 247 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 248
 249 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 250 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 251 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 252 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 253
 254 #define VIA_TBL_BIT_FLAG        0x40000000
 255 #define VIA_TBL_BIT_EOL         0x80000000
 256
 257 /* pci space */
 258 #define VIA_ACLINK_STAT         0x40
 259 #define  VIA_ACLINK_C11_READY   0x20
 260 #define  VIA_ACLINK_C10_READY   0x10
 261 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 262 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 263 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 264 #define VIA_ACLINK_CTRL         0x41
 265 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 266 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 267 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 268 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 269 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 270 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 271 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 272 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 273 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 274                                  VIA_ACLINK_CTRL_RESET|\
 275                                  VIA_ACLINK_CTRL_PCM|\
 276                                  VIA_ACLINK_CTRL_VRA)
 277 #define VIA_FUNC_ENABLE         0x42
 278 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 279 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 280 #define  VIA_FUNC_RX2C_WRITE    0x20
 281 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 282 #define  VIA_FUNC_ENABLE_GAME   0x08
 283 #define  VIA_FUNC_ENABLE_FM     0x04
 284 #define  VIA_FUNC_ENABLE_MIDI   0x02
 285 #define  VIA_FUNC_ENABLE_SB     0x01
 286 #define VIA_PNP_CONTROL         0x43
 287 #define VIA_FM_NMI_CTRL         0x48
 288 #define VIA8233_VOLCHG_CTRL     0x48
 289 #define VIA8233_SPDIF_CTRL      0x49
 290 #define  VIA8233_SPDIF_DX3      0x08
 291 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 292 #define  VIA8233_SPDIF_SLOT_1011        0x00
 293 #define  VIA8233_SPDIF_SLOT_34          0x01
 294 #define  VIA8233_SPDIF_SLOT_78          0x02
 295 #define  VIA8233_SPDIF_SLOT_69          0x03
 296
 297 /*
 298  */
 299
 300 #define VIA_DXS_AUTO    0
 301 #define VIA_DXS_ENABLE  1
 302 #define VIA_DXS_DISABLE 2
 303 #define VIA_DXS_48K     3
 304 #define VIA_DXS_NO_VRA  4
 305
 306
 307 /*
 308  */
 309
 310 typedef struct _snd_via82xx via82xx_t;
 311 typedef struct via_dev viadev_t;
 312
 313 /*
 314  * pcm stream
 315  */
 316
 317 struct snd_via_sg_table {
 318         unsigned int offset;
 319         unsigned int size;
 320 } ;
 321
 322 #define VIA_TABLE_SIZE  255
 323
 324 struct via_dev {
 325         unsigned int reg_offset;
 326         unsigned long port;
 327         int direction;  /* playback = 0, capture = 1 */
 328         snd_pcm_substream_t *substream;
 329         int running;
 330         unsigned int tbl_entries; /* # descriptors */
 331         struct snd_dma_buffer table;
 332         struct snd_via_sg_table *idx_table;
 333         /* for recovery from the unexpected pointer */
 334         unsigned int lastpos;
 335         unsigned int fragsize;
 336         unsigned int bufsize;
 337         unsigned int bufsize2;
 338 };
 339
 340
 341 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 342 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 343
 344 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 345
 346 struct via_rate_lock {
 347         spinlock_t lock;
 348         int rate;
 349         int used;
 350 };
 351
 352 struct _snd_via82xx {
 353         int irq;
 354
 355         unsigned long port;
 356         struct resource *mpu_res;
 357         int chip_type;
 358         unsigned char revision;
 359
 360         unsigned char old_legacy;
 361         unsigned char old_legacy_cfg;
 362 #ifdef CONFIG_PM
 363         unsigned char legacy_saved;
 364         unsigned char legacy_cfg_saved;
 365         unsigned char spdif_ctrl_saved;
 366         unsigned char capture_src_saved[2];
 367         unsigned int mpu_port_saved;
 368 #endif
 369
 370         unsigned char playback_volume[2]; /* for VIA8233/C/8235; default = 0 */
 371
 372         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 373
 374         struct pci_dev *pci;
 375         snd_card_t *card;
 376
 377         unsigned int num_devs;
 378         unsigned int playback_devno, multi_devno, capture_devno;
 379         viadev_t devs[VIA_MAX_DEVS];
 380         struct via_rate_lock rates[2]; /* playback and capture */
 381         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 382         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 383         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 384
 385         snd_pcm_t *pcms[2];
 386         snd_rawmidi_t *rmidi;
 387
 388         ac97_bus_t *ac97_bus;
 389         ac97_t *ac97;
 390         unsigned int ac97_clock;
 391         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 392
 393         spinlock_t reg_lock;
 394         snd_info_entry_t *proc_entry;
 395
 396 #ifdef SUPPORT_JOYSTICK
 397         struct gameport *gameport;
 398 #endif
 399 };
 400
 401 static struct pci_device_id snd_via82xx_ids[] = {
 402         { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },    /* 686A */
 403         { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },   /* VT8233 */
 404         { 0, }
 405 };
 406
 407 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 408
 409 /*
 410  */
 411
 412 /*
 413  * allocate and initialize the descriptor buffers
 414  * periods = number of periods
 415  * fragsize = period size in bytes
 416  */
 417 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 418                            struct pci_dev *pci,
 419                            unsigned int periods, unsigned int fragsize)
 420 {
 421         unsigned int i, idx, ofs, rest;
 422         via82xx_t *chip = snd_pcm_substream_chip(substream);
 423         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 424
 425         if (dev->table.area == NULL) {
 426                 /* the start of each lists must be aligned to 8 bytes,
 427                  * but the kernel pages are much bigger, so we don't care
 428                  */
 429                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 430                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 431                                         &dev->table) < 0)
 432                         return -ENOMEM;
 433         }
 434         if (! dev->idx_table) {
 435                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 436                 if (! dev->idx_table)
 437                         return -ENOMEM;
 438         }
 439
 440         /* fill the entries */
 441         idx = 0;
 442         ofs = 0;
 443         for (i = 0; i < periods; i++) {
 444                 rest = fragsize;
 445                 /* fill descriptors for a period.
 446                  * a period can be split to several descriptors if it's
 447                  * over page boundary.
 448                  */
 449                 do {
 450                         unsigned int r;
 451                         unsigned int flag;
 452
 453                         if (idx >= VIA_TABLE_SIZE) {
 454                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 455                                 return -EINVAL;
 456                         }
 457                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
 458                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
 459                         if (rest < r)
 460                                 r = rest;
 461                         rest -= r;
 462                         if (! rest) {
 463                                 if (i == periods - 1)
 464                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 465                                 else
 466                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 467                         } else
 468                                 flag = 0; /* period continues to the next */
 469                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 470                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 471                         dev->idx_table[idx].offset = ofs;
 472                         dev->idx_table[idx].size = r;
 473                         ofs += r;
 474                         idx++;
 475                 } while (rest > 0);
 476         }
 477         dev->tbl_entries = idx;
 478         dev->bufsize = periods * fragsize;
 479         dev->bufsize2 = dev->bufsize / 2;
 480         dev->fragsize = fragsize;
 481         return 0;
 482 }
 483
 484
 485 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
 486                            struct pci_dev *pci)
 487 {
 488         if (dev->table.area) {
 489                 snd_dma_free_pages(&dev->table);
 490                 dev->table.area = NULL;
 491         }
 492         if (dev->idx_table) {
 493                 kfree(dev->idx_table);
 494                 dev->idx_table = NULL;
 495         }
 496         return 0;
 497 }
 498
 499 /*
 500  *  Basic I/O
 501  */
 502
 503 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
 504 {
 505         return inl(VIAREG(chip, AC97));
 506 }
 507
 508 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
 509 {
 510         outl(val, VIAREG(chip, AC97));
 511 }
 512
 513 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
 514 {
 515         unsigned int timeout = 1000;    /* 1ms */
 516         unsigned int val;
 517
 518         while (timeout-- > 0) {
 519                 udelay(1);
 520                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 521                         return val & 0xffff;
 522         }
 523         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
 524         return -EIO;
 525 }
 526
 527 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
 528 {
 529         unsigned int timeout = 1000;    /* 1ms */
 530         unsigned int val, val1;
 531         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 532                                          VIA_REG_AC97_SECONDARY_VALID;
 533
 534         while (timeout-- > 0) {
 535                 val = snd_via82xx_codec_xread(chip);
 536                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 537                 if (val1 == stat)
 538                         return val & 0xffff;
 539                 udelay(1);
 540         }
 541         return -EIO;
 542 }
 543
 544 static void snd_via82xx_codec_wait(ac97_t *ac97)
 545 {
 546         via82xx_t *chip = ac97->private_data;
 547         int err;
 548         err = snd_via82xx_codec_ready(chip, ac97->num);
 549         /* here we need to wait fairly for long time.. */
 550         set_current_state(TASK_UNINTERRUPTIBLE);
 551         schedule_timeout(HZ/2);
 552 }
 553
 554 static void snd_via82xx_codec_write(ac97_t *ac97,
 555                                     unsigned short reg,
 556                                     unsigned short val)
 557 {
 558         via82xx_t *chip = ac97->private_data;
 559         unsigned int xval;
 560
 561         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 562         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 563         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 564         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 565         snd_via82xx_codec_xwrite(chip, xval);
 566         snd_via82xx_codec_ready(chip, ac97->num);
 567 }
 568
 569 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
 570 {
 571         via82xx_t *chip = ac97->private_data;
 572         unsigned int xval, val = 0xffff;
 573         int again = 0;
 574
 575         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 576         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 577         xval |= VIA_REG_AC97_READ;
 578         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 579         while (1) {
 580                 if (again++ > 3) {
 581                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
 582                         return 0xffff;
 583                 }
 584                 snd_via82xx_codec_xwrite(chip, xval);
 585                 udelay (20);
 586                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 587                         udelay(25);
 588                         val = snd_via82xx_codec_xread(chip);
 589                         break;
 590                 }
 591         }
 592         return val & 0xffff;
 593 }
 594
 595 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
 596 {
 597         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 598              VIADEV_REG(viadev, OFFSET_CONTROL));
 599         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 600         udelay(50);
 601         /* disable interrupts */
 602         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 603         /* clear interrupts */
 604         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 605         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 606         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 607         viadev->lastpos = 0;
 608 }
 609
 610
 611 /*
 612  *  Interrupt handler
 613  */
 614
 615 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 616 {
 617         via82xx_t *chip = dev_id;
 618         unsigned int status;
 619         unsigned int i;
 620
 621         status = inl(VIAREG(chip, SGD_SHADOW));
 622         if (! (status & chip->intr_mask)) {
 623                 if (chip->rmidi)
 624                         /* check mpu401 interrupt */
 625                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
 626                 return IRQ_NONE;
 627         }
 628
 629         /* check status for each stream */
 630         spin_lock(&chip->reg_lock);
 631         for (i = 0; i < chip->num_devs; i++) {
 632                 viadev_t *viadev = &chip->devs[i];
 633                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 634                 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
 635                 if (! c_status)
 636                         continue;
 637                 if (viadev->substream && viadev->running) {
 638                         spin_unlock(&chip->reg_lock);
 639                         snd_pcm_period_elapsed(viadev->substream);
 640                         spin_lock(&chip->reg_lock);
 641                 }
 642                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 643         }
 644         spin_unlock(&chip->reg_lock);
 645         return IRQ_HANDLED;
 646 }
 647
 648 /*
 649  *  PCM callbacks
 650  */
 651
 652 /*
 653  * trigger callback
 654  */
 655 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
 656 {
 657         via82xx_t *chip = snd_pcm_substream_chip(substream);
 658         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 659         unsigned char val;
 660
 661         if (chip->chip_type != TYPE_VIA686)
 662                 val = VIA_REG_CTRL_INT;
 663         else
 664                 val = 0;
 665         switch (cmd) {
 666         case SNDRV_PCM_TRIGGER_START:
 667                 val |= VIA_REG_CTRL_START;
 668                 viadev->running = 1;
 669                 break;
 670         case SNDRV_PCM_TRIGGER_STOP:
 671                 val = VIA_REG_CTRL_TERMINATE;
 672                 viadev->running = 0;
 673                 break;
 674         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 675                 val |= VIA_REG_CTRL_PAUSE;
 676                 viadev->running = 0;
 677                 break;
 678         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 679                 viadev->running = 1;
 680                 break;
 681         default:
 682                 return -EINVAL;
 683         }
 684         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 685         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 686                 snd_via82xx_channel_reset(chip, viadev);
 687         return 0;
 688 }
 689
 690
 691 /*
 692  * pointer callbacks
 693  */
 694
 695 /*
 696  * calculate the linear position at the given sg-buffer index and the rest count
 697  */
 698
 699 #define check_invalid_pos(viadev,pos) \
 700         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
 701
 702 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
 703 {
 704         unsigned int size, base, res;
 705
 706         size = viadev->idx_table[idx].size;
 707         base = viadev->idx_table[idx].offset;
 708         res = base + size - count;
 709
 710         /* check the validity of the calculated position */
 711         if (size < count) {
 712                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
 713                 res = viadev->lastpos;
 714         } else {
 715                 if (! count) {
 716                         /* Some mobos report count = 0 on the DMA boundary,
 717                          * i.e. count = size indeed.
 718                          * Let's check whether this step is above the expected size.
 719                          */
 720                         int delta = res - viadev->lastpos;
 721                         if (delta < 0)
 722                                 delta += viadev->bufsize;
 723                         if ((unsigned int)delta > viadev->fragsize)
 724                                 res = base;
 725                 }
 726                 if (check_invalid_pos(viadev, res)) {
 727 #ifdef POINTER_DEBUG
 728                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count);
 729 #endif
 730                         /* count register returns full size when end of buffer is reached */
 731                         res = base + size;
 732                         if (check_invalid_pos(viadev, res)) {
 733                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 734                                 res = viadev->lastpos;
 735                         }
 736                 }
 737         }
 738         viadev->lastpos = res; /* remember the last position */
 739         if (res >= viadev->bufsize)
 740                 res -= viadev->bufsize;
 741         return res;
 742 }
 743
 744 /*
 745  * get the current pointer on via686
 746  */
 747 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
 748 {
 749         via82xx_t *chip = snd_pcm_substream_chip(substream);
 750         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 751         unsigned int idx, ptr, count, res;
 752
 753         snd_assert(viadev->tbl_entries, return 0);
 754         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 755                 return 0;
 756
 757         spin_lock(&chip->reg_lock);
 758         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 759         /* The via686a does not have the current index register,
 760          * so we need to calculate the index from CURR_PTR.
 761          */
 762         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 763         if (ptr <= (unsigned int)viadev->table.addr)
 764                 idx = 0;
 765         else /* CURR_PTR holds the address + 8 */
 766                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 767         res = calc_linear_pos(viadev, idx, count);
 768         spin_unlock(&chip->reg_lock);
 769
 770         return bytes_to_frames(substream->runtime, res);
 771 }
 772
 773 /*
 774  * get the current pointer on via823x
 775  */
 776 static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream)
 777 {
 778         via82xx_t *chip = snd_pcm_substream_chip(substream);
 779         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 780         unsigned int idx, count, res;
 781         int timeout = 5000;
 782
 783         snd_assert(viadev->tbl_entries, return 0);
 784         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 785                 return 0;
 786         spin_lock(&chip->reg_lock);
 787         do {
 788                 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 789                 /* some mobos read 0 count */
 790                 if ((count & 0xffffff) || ! viadev->running)
 791                         break;
 792         } while (--timeout);
 793         if (! timeout)
 794                 snd_printd(KERN_ERR "zero position is read\n");
 795         idx = count >> 24;
 796         if (idx >= viadev->tbl_entries) {
 797 #ifdef POINTER_DEBUG
 798                 printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries);
 799 #endif
 800                 res = viadev->lastpos;
 801         } else {
 802                 count &= 0xffffff;
 803                 res = calc_linear_pos(viadev, idx, count);
 804         }
 805         spin_unlock(&chip->reg_lock);
 806
 807         return bytes_to_frames(substream->runtime, res);
 808 }
 809
 810
 811 /*
 812  * hw_params callback:
 813  * allocate the buffer and build up the buffer description table
 814  */
 815 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
 816                                  snd_pcm_hw_params_t * hw_params)
 817 {
 818         via82xx_t *chip = snd_pcm_substream_chip(substream);
 819         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 820         int err;
 821
 822         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 823         if (err < 0)
 824                 return err;
 825         err = build_via_table(viadev, substream, chip->pci,
 826                               params_periods(hw_params),
 827                               params_period_bytes(hw_params));
 828         if (err < 0)
 829                 return err;
 830
 831         return 0;
 832 }
 833
 834 /*
 835  * hw_free callback:
 836  * clean up the buffer description table and release the buffer
 837  */
 838 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
 839 {
 840         via82xx_t *chip = snd_pcm_substream_chip(substream);
 841         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 842
 843         clean_via_table(viadev, substream, chip->pci);
 844         snd_pcm_lib_free_pages(substream);
 845         return 0;
 846 }
 847
 848
 849 /*
 850  * set up the table pointer
 851  */
 852 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
 853 {
 854         snd_via82xx_codec_ready(chip, 0);
 855         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 856         udelay(20);
 857         snd_via82xx_codec_ready(chip, 0);
 858 }
 859
 860 /*
 861  * prepare callback for playback and capture on via686
 862  */
 863 static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime)
 864 {
 865         snd_via82xx_channel_reset(chip, viadev);
 866         /* this must be set after channel_reset */
 867         snd_via82xx_set_table_ptr(chip, viadev);
 868         outb(VIA_REG_TYPE_AUTOSTART |
 869              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 870              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 871              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 872              VIA_REG_TYPE_INT_EOL |
 873              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 874 }
 875
 876 static int snd_via686_playback_prepare(snd_pcm_substream_t *substream)
 877 {
 878         via82xx_t *chip = snd_pcm_substream_chip(substream);
 879         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 880         snd_pcm_runtime_t *runtime = substream->runtime;
 881
 882         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 883         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 884         via686_setup_format(chip, viadev, runtime);
 885         return 0;
 886 }
 887
 888 static int snd_via686_capture_prepare(snd_pcm_substream_t *substream)
 889 {
 890         via82xx_t *chip = snd_pcm_substream_chip(substream);
 891         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 892         snd_pcm_runtime_t *runtime = substream->runtime;
 893
 894         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 895         via686_setup_format(chip, viadev, runtime);
 896         return 0;
 897 }
 898
 899 /*
 900  * lock the current rate
 901  */
 902 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 903 {
 904         int changed = 0;
 905
 906         spin_lock_irq(&rec->lock);
 907         if (rec->rate != rate) {
 908                 if (rec->rate && rec->used > 1) /* already set */
 909                         changed = -EINVAL;
 910                 else {
 911                         rec->rate = rate;
 912                         changed = 1;
 913                 }
 914         }
 915         spin_unlock_irq(&rec->lock);
 916         return changed;
 917 }
 918
 919 /*
 920  * prepare callback for DSX playback on via823x
 921  */
 922 static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream)
 923 {
 924         via82xx_t *chip = snd_pcm_substream_chip(substream);
 925         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 926         snd_pcm_runtime_t *runtime = substream->runtime;
 927         int rate_changed;
 928         u32 rbits;
 929
 930         if ((rate_changed = via_lock_rate(&chip->rates[0], runtime->rate)) < 0)
 931                 return rate_changed;
 932         if (rate_changed) {
 933                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
 934                                   chip->no_vra ? 48000 : runtime->rate);
 935                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 936         }
 937         if (runtime->rate == 48000)
 938                 rbits = 0xfffff;
 939         else
 940                 rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000;
 941         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
 942         snd_via82xx_channel_reset(chip, viadev);
 943         snd_via82xx_set_table_ptr(chip, viadev);
 944         outb(chip->playback_volume[0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
 945         outb(chip->playback_volume[1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
 946         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
 947              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
 948              rbits | /* rate */
 949              0xff000000,    /* STOP index is never reached */
 950              VIADEV_REG(viadev, OFFSET_STOP_IDX));
 951         udelay(20);
 952         snd_via82xx_codec_ready(chip, 0);
 953         return 0;
 954 }
 955
 956 /*
 957  * prepare callback for multi-channel playback on via823x
 958  */
 959 static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream)
 960 {
 961         via82xx_t *chip = snd_pcm_substream_chip(substream);
 962         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
 963         snd_pcm_runtime_t *runtime = substream->runtime;
 964         unsigned int slots;
 965         int fmt;
 966
 967         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
 968                 return -EINVAL;
 969         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 970         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
 971         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
 972         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 973         snd_via82xx_channel_reset(chip, viadev);
 974         snd_via82xx_set_table_ptr(chip, viadev);
 975
 976         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
 977         fmt |= runtime->channels << 4;
 978         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
 979 #if 0
 980         if (chip->revision == VIA_REV_8233A)
 981                 slots = 0;
 982         else
 983 #endif
 984         {
 985                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
 986                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
 987                 switch (runtime->channels) {
 988                 case 1: slots = (1<<0) | (1<<4); break;
 989                 case 2: slots = (1<<0) | (2<<4); break;
 990                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
 991                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
 992                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
 993                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
 994                 default: slots = 0; break;
 995                 }
 996         }
 997         /* STOP index is never reached */
 998         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
 999         udelay(20);
1000         snd_via82xx_codec_ready(chip, 0);
1001         return 0;
1002 }
1003
1004 /*
1005  * prepare callback for capture on via823x
1006  */
1007 static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream)
1008 {
1009         via82xx_t *chip = snd_pcm_substream_chip(substream);
1010         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1011         snd_pcm_runtime_t *runtime = substream->runtime;
1012
1013         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1014                 return -EINVAL;
1015         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1016         snd_via82xx_channel_reset(chip, viadev);
1017         snd_via82xx_set_table_ptr(chip, viadev);
1018         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1019         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1020              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1021              0xff000000,    /* STOP index is never reached */
1022              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1023         udelay(20);
1024         snd_via82xx_codec_ready(chip, 0);
1025         return 0;
1026 }
1027
1028
1029 /*
1030  * pcm hardware definition, identical for both playback and capture
1031  */
1032 static snd_pcm_hardware_t snd_via82xx_hw =
1033 {
1034         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1035                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1036                                  SNDRV_PCM_INFO_MMAP_VALID |
1037                                  SNDRV_PCM_INFO_RESUME |
1038                                  SNDRV_PCM_INFO_PAUSE),
1039         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1040         .rates =                SNDRV_PCM_RATE_48000,
1041         .rate_min =             48000,
1042         .rate_max =             48000,
1043         .channels_min =         1,
1044         .channels_max =         2,
1045         .buffer_bytes_max =     128 * 1024,
1046         .period_bytes_min =     32,
1047         .period_bytes_max =     128 * 1024,
1048         .periods_min =          2,
1049         .periods_max =          VIA_TABLE_SIZE / 2,
1050         .fifo_size =            0,
1051 };
1052
1053
1054 /*
1055  * open callback skeleton
1056  */
1057 static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
1058 {
1059         snd_pcm_runtime_t *runtime = substream->runtime;
1060         int err;
1061         struct via_rate_lock *ratep;
1062
1063         runtime->hw = snd_via82xx_hw;
1064
1065         /* set the hw rate condition */
1066         ratep = &chip->rates[viadev->direction];
1067         spin_lock_irq(&ratep->lock);
1068         ratep->used++;
1069         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1070                 /* DXS#3 and spdif is on */
1071                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1072                 snd_pcm_limit_hw_rates(runtime);
1073         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1074                 /* fixed DXS playback rate */
1075                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1076                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1077         } else if (! ratep->rate) {
1078                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1079                 runtime->hw.rates = chip->ac97->rates[idx];
1080                 snd_pcm_limit_hw_rates(runtime);
1081         } else {
1082                 /* a fixed rate */
1083                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1084                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1085         }
1086         spin_unlock_irq(&ratep->lock);
1087
1088         /* we may remove following constaint when we modify table entries
1089            in interrupt */
1090         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1091                 return err;
1092
1093         runtime->private_data = viadev;
1094         viadev->substream = substream;
1095
1096         return 0;
1097 }
1098
1099
1100 /*
1101  * open callback for playback on via686 and via823x DSX
1102  */
1103 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
1104 {
1105         via82xx_t *chip = snd_pcm_substream_chip(substream);
1106         viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
1107         int err;
1108
1109         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1110                 return err;
1111         return 0;
1112 }
1113
1114 /*
1115  * open callback for playback on via823x multi-channel
1116  */
1117 static int snd_via8233_multi_open(snd_pcm_substream_t * substream)
1118 {
1119         via82xx_t *chip = snd_pcm_substream_chip(substream);
1120         viadev_t *viadev = &chip->devs[chip->multi_devno];
1121         int err;
1122         /* channels constraint for VIA8233A
1123          * 3 and 5 channels are not supported
1124          */
1125         static unsigned int channels[] = {
1126                 1, 2, 4, 6
1127         };
1128         static snd_pcm_hw_constraint_list_t hw_constraints_channels = {
1129                 .count = ARRAY_SIZE(channels),
1130                 .list = channels,
1131                 .mask = 0,
1132         };
1133
1134         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1135                 return err;
1136         substream->runtime->hw.channels_max = 6;
1137         if (chip->revision == VIA_REV_8233A)
1138                 snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, &hw_constraints_channels);
1139         return 0;
1140 }
1141
1142 /*
1143  * open callback for capture on via686 and via823x
1144  */
1145 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
1146 {
1147         via82xx_t *chip = snd_pcm_substream_chip(substream);
1148         viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1149
1150         return snd_via82xx_pcm_open(chip, viadev, substream);
1151 }
1152
1153 /*
1154  * close callback
1155  */
1156 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
1157 {
1158         via82xx_t *chip = snd_pcm_substream_chip(substream);
1159         viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
1160         struct via_rate_lock *ratep;
1161
1162         /* release the rate lock */
1163         ratep = &chip->rates[viadev->direction];
1164         spin_lock_irq(&ratep->lock);
1165         ratep->used--;
1166         if (! ratep->used)
1167                 ratep->rate = 0;
1168         spin_unlock_irq(&ratep->lock);
1169
1170         viadev->substream = NULL;
1171         return 0;
1172 }
1173
1174
1175 /* via686 playback callbacks */
1176 static snd_pcm_ops_t snd_via686_playback_ops = {
1177         .open =         snd_via82xx_playback_open,
1178         .close =        snd_via82xx_pcm_close,
1179         .ioctl =        snd_pcm_lib_ioctl,
1180         .hw_params =    snd_via82xx_hw_params,
1181         .hw_free =      snd_via82xx_hw_free,
1182         .prepare =      snd_via686_playback_prepare,
1183         .trigger =      snd_via82xx_pcm_trigger,
1184         .pointer =      snd_via686_pcm_pointer,
1185         .page =         snd_pcm_sgbuf_ops_page,
1186 };
1187
1188 /* via686 capture callbacks */
1189 static snd_pcm_ops_t snd_via686_capture_ops = {
1190         .open =         snd_via82xx_capture_open,
1191         .close =        snd_via82xx_pcm_close,
1192         .ioctl =        snd_pcm_lib_ioctl,
1193         .hw_params =    snd_via82xx_hw_params,
1194         .hw_free =      snd_via82xx_hw_free,
1195         .prepare =      snd_via686_capture_prepare,
1196         .trigger =      snd_via82xx_pcm_trigger,
1197         .pointer =      snd_via686_pcm_pointer,
1198         .page =         snd_pcm_sgbuf_ops_page,
1199 };
1200
1201 /* via823x DSX playback callbacks */
1202 static snd_pcm_ops_t snd_via8233_playback_ops = {
1203         .open =         snd_via82xx_playback_open,
1204         .close =        snd_via82xx_pcm_close,
1205         .ioctl =        snd_pcm_lib_ioctl,
1206         .hw_params =    snd_via82xx_hw_params,
1207         .hw_free =      snd_via82xx_hw_free,
1208         .prepare =      snd_via8233_playback_prepare,
1209         .trigger =      snd_via82xx_pcm_trigger,
1210         .pointer =      snd_via8233_pcm_pointer,
1211         .page =         snd_pcm_sgbuf_ops_page,
1212 };
1213
1214 /* via823x multi-channel playback callbacks */
1215 static snd_pcm_ops_t snd_via8233_multi_ops = {
1216         .open =         snd_via8233_multi_open,
1217         .close =        snd_via82xx_pcm_close,
1218         .ioctl =        snd_pcm_lib_ioctl,
1219         .hw_params =    snd_via82xx_hw_params,
1220         .hw_free =      snd_via82xx_hw_free,
1221         .prepare =      snd_via8233_multi_prepare,
1222         .trigger =      snd_via82xx_pcm_trigger,
1223         .pointer =      snd_via8233_pcm_pointer,
1224         .page =         snd_pcm_sgbuf_ops_page,
1225 };
1226
1227 /* via823x capture callbacks */
1228 static snd_pcm_ops_t snd_via8233_capture_ops = {
1229         .open =         snd_via82xx_capture_open,
1230         .close =        snd_via82xx_pcm_close,
1231         .ioctl =        snd_pcm_lib_ioctl,
1232         .hw_params =    snd_via82xx_hw_params,
1233         .hw_free =      snd_via82xx_hw_free,
1234         .prepare =      snd_via8233_capture_prepare,
1235         .trigger =      snd_via82xx_pcm_trigger,
1236         .pointer =      snd_via8233_pcm_pointer,
1237         .page =         snd_pcm_sgbuf_ops_page,
1238 };
1239
1240
1241 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
1242 {
1243         chip->devs[idx].reg_offset = reg_offset;
1244         chip->devs[idx].direction = direction;
1245         chip->devs[idx].port = chip->port + reg_offset;
1246 }
1247
1248 /*
1249  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1250  */
1251 static int __devinit snd_via8233_pcm_new(via82xx_t *chip)
1252 {
1253         snd_pcm_t *pcm;
1254         int i, err;
1255
1256         chip->playback_devno = 0;       /* x 4 */
1257         chip->multi_devno = 4;          /* x 1 */
1258         chip->capture_devno = 5;        /* x 2 */
1259         chip->num_devs = 7;
1260         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1261
1262         /* PCM #0:  4 DSX playbacks and 1 capture */
1263         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1264         if (err < 0)
1265                 return err;
1266         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1267         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1268         pcm->private_data = chip;
1269         strcpy(pcm->name, chip->card->shortname);
1270         chip->pcms[0] = pcm;
1271         /* set up playbacks */
1272         for (i = 0; i < 4; i++)
1273                 init_viadev(chip, i, 0x10 * i, 0);
1274         /* capture */
1275         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1276
1277         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1278                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1279                 return err;
1280
1281         /* PCM #1:  multi-channel playback and 2nd capture */
1282         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1283         if (err < 0)
1284                 return err;
1285         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1286         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1287         pcm->private_data = chip;
1288         strcpy(pcm->name, chip->card->shortname);
1289         chip->pcms[1] = pcm;
1290         /* set up playback */
1291         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1292         /* set up capture */
1293         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 1);
1294
1295         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1296                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1297                 return err;
1298
1299         return 0;
1300 }
1301
1302 /*
1303  * create pcm instances for VIA8233A
1304  */
1305 static int __devinit snd_via8233a_pcm_new(via82xx_t *chip)
1306 {
1307         snd_pcm_t *pcm;
1308         int err;
1309
1310         chip->multi_devno = 0;
1311         chip->playback_devno = 1;
1312         chip->capture_devno = 2;
1313         chip->num_devs = 3;
1314         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1315
1316         /* PCM #0:  multi-channel playback and capture */
1317         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1318         if (err < 0)
1319                 return err;
1320         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1321         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1322         pcm->private_data = chip;
1323         strcpy(pcm->name, chip->card->shortname);
1324         chip->pcms[0] = pcm;
1325         /* set up playback */
1326         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 0);
1327         /* capture */
1328         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 1);
1329
1330         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1331                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1332                 return err;
1333
1334         /* SPDIF supported? */
1335         if (! ac97_can_spdif(chip->ac97))
1336                 return 0;
1337
1338         /* PCM #1:  DXS3 playback (for spdif) */
1339         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1340         if (err < 0)
1341                 return err;
1342         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1343         pcm->private_data = chip;
1344         strcpy(pcm->name, chip->card->shortname);
1345         chip->pcms[1] = pcm;
1346         /* set up playback */
1347         init_viadev(chip, chip->playback_devno, 0x30, 0);
1348
1349         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1350                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1351                 return err;
1352
1353         return 0;
1354 }
1355
1356 /*
1357  * create a pcm instance for via686a/b
1358  */
1359 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
1360 {
1361         snd_pcm_t *pcm;
1362         int err;
1363
1364         chip->playback_devno = 0;
1365         chip->capture_devno = 1;
1366         chip->num_devs = 2;
1367         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1368
1369         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1370         if (err < 0)
1371                 return err;
1372         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1373         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1374         pcm->private_data = chip;
1375         strcpy(pcm->name, chip->card->shortname);
1376         chip->pcms[0] = pcm;
1377         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0);
1378         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 1);
1379
1380         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1381                                                          snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
1382                 return err;
1383
1384         return 0;
1385 }
1386
1387
1388 /*
1389  *  Mixer part
1390  */
1391
1392 static int snd_via8233_capture_source_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1393 {
1394         /* formerly they were "Line" and "Mic", but it looks like that they
1395          * have nothing to do with the actual physical connections...
1396          */
1397         static char *texts[2] = {
1398                 "Input1", "Input2"
1399         };
1400         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1401         uinfo->count = 1;
1402         uinfo->value.enumerated.items = 2;
1403         if (uinfo->value.enumerated.item >= 2)
1404                 uinfo->value.enumerated.item = 1;
1405         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1406         return 0;
1407 }
1408
1409 static int snd_via8233_capture_source_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1410 {
1411         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1412         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1413         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1414         return 0;
1415 }
1416
1417 static int snd_via8233_capture_source_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1418 {
1419         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1420         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1421         u8 val, oval;
1422
1423         spin_lock_irq(&chip->reg_lock);
1424         oval = inb(port);
1425         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1426         if (ucontrol->value.enumerated.item[0])
1427                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1428         if (val != oval)
1429                 outb(val, port);
1430         spin_unlock_irq(&chip->reg_lock);
1431         return val != oval;
1432 }
1433
1434 static snd_kcontrol_new_t snd_via8233_capture_source __devinitdata = {
1435         .name = "Input Source Select",
1436         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1437         .info = snd_via8233_capture_source_info,
1438         .get = snd_via8233_capture_source_get,
1439         .put = snd_via8233_capture_source_put,
1440 };
1441
1442 static int snd_via8233_dxs3_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1443 {
1444         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1445         uinfo->count = 1;
1446         uinfo->value.integer.min = 0;
1447         uinfo->value.integer.max = 1;
1448         return 0;
1449 }
1450
1451 static int snd_via8233_dxs3_spdif_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1452 {
1453         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1454         u8 val;
1455
1456         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1457         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1458         return 0;
1459 }
1460
1461 static int snd_via8233_dxs3_spdif_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1462 {
1463         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1464         u8 val, oval;
1465
1466         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1467         val = oval & ~VIA8233_SPDIF_DX3;
1468         if (ucontrol->value.integer.value[0])
1469                 val |= VIA8233_SPDIF_DX3;
1470         /* save the spdif flag for rate filtering */
1471         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1472         if (val != oval) {
1473                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1474                 return 1;
1475         }
1476         return 0;
1477 }
1478
1479 static snd_kcontrol_new_t snd_via8233_dxs3_spdif_control __devinitdata = {
1480         .name = "IEC958 Output Switch",
1481         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1482         .info = snd_via8233_dxs3_spdif_info,
1483         .get = snd_via8233_dxs3_spdif_get,
1484         .put = snd_via8233_dxs3_spdif_put,
1485 };
1486
1487 static int snd_via8233_dxs_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1488 {
1489         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1490         uinfo->count = 2;
1491         uinfo->value.integer.min = 0;
1492         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1493         return 0;
1494 }
1495
1496 static int snd_via8233_dxs_volume_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1497 {
1498         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1499         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[0];
1500         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[1];
1501         return 0;
1502 }
1503
1504 static int snd_via8233_dxs_volume_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1505 {
1506         via82xx_t *chip = snd_kcontrol_chip(kcontrol);
1507         unsigned int idx;
1508         unsigned char val;
1509         int i, change = 0;
1510
1511         for (i = 0; i < 2; i++) {
1512                 val = ucontrol->value.integer.value[i];
1513                 if (val > VIA_DXS_MAX_VOLUME)
1514                         val = VIA_DXS_MAX_VOLUME;
1515                 val = VIA_DXS_MAX_VOLUME - val;
1516                 if (val != chip->playback_volume[i]) {
1517                         change = 1;
1518                         chip->playback_volume[i] = val;
1519                         for (idx = 0; idx < 4; idx++) {
1520                                 unsigned long port = chip->port + 0x10 * idx;
1521                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1522                         }
1523                 }
1524         }
1525         return change;
1526 }
1527
1528 static snd_kcontrol_new_t snd_via8233_dxs_volume_control __devinitdata = {
1529         .name = "PCM Playback Volume",
1530         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1531         .info = snd_via8233_dxs_volume_info,
1532         .get = snd_via8233_dxs_volume_get,
1533         .put = snd_via8233_dxs_volume_put,
1534 };
1535
1536 /*
1537  */
1538
1539 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
1540 {
1541         via82xx_t *chip = bus->private_data;
1542         chip->ac97_bus = NULL;
1543 }
1544
1545 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
1546 {
1547         via82xx_t *chip = ac97->private_data;
1548         chip->ac97 = NULL;
1549 }
1550
1551 static struct ac97_quirk ac97_quirks[] = {
1552         {
1553                 .vendor = 0x1106,
1554                 .device = 0x4161,
1555                 .codec_id = 0x56494161, /* VT1612A */
1556                 .name = "Soltek SL-75DRV5",
1557                 .type = AC97_TUNE_NONE
1558         },
1559         {       /* FIXME: which codec? */
1560                 .vendor = 0x1106,
1561                 .device = 0x4161,
1562                 .name = "ASRock K7VT2",
1563                 .type = AC97_TUNE_HP_ONLY
1564         },
1565         {
1566                 .vendor = 0x1019,
1567                 .device = 0x0a81,
1568                 .name = "ECS K7VTA3",
1569                 .type = AC97_TUNE_HP_ONLY
1570         },
1571         {
1572                 .vendor = 0x1019,
1573                 .device = 0x0a85,
1574                 .name = "ECS L7VMM2",
1575                 .type = AC97_TUNE_HP_ONLY
1576         },
1577         {
1578                 .vendor = 0x1849,
1579                 .device = 0x3059,
1580                 .name = "ASRock K7VM2",
1581                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1582         },
1583         {
1584                 .vendor = 0x14cd,
1585                 .device = 0x7002,
1586                 .name = "Unknown",
1587                 .type = AC97_TUNE_ALC_JACK
1588         },
1589         {
1590                 .vendor = 0x1071,
1591                 .device = 0x8590,
1592                 .name = "Mitac Mobo",
1593                 .type = AC97_TUNE_ALC_JACK
1594         },
1595         {
1596                 .vendor = 0x161f,
1597                 .device = 0x202b,
1598                 .name = "Arima Notebook",
1599                 .type = AC97_TUNE_HP_ONLY,
1600         },
1601         { } /* terminator */
1602 };
1603
1604 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip, const char *quirk_override)
1605 {
1606         ac97_template_t ac97;
1607         int err;
1608         static ac97_bus_ops_t ops = {
1609                 .write = snd_via82xx_codec_write,
1610                 .read = snd_via82xx_codec_read,
1611                 .wait = snd_via82xx_codec_wait,
1612         };
1613
1614         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1615                 return err;
1616         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1617         chip->ac97_bus->clock = chip->ac97_clock;
1618         chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
1619
1620         memset(&ac97, 0, sizeof(ac97));
1621         ac97.private_data = chip;
1622         ac97.private_free = snd_via82xx_mixer_free_ac97;
1623         ac97.pci = chip->pci;
1624         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1625                 return err;
1626
1627         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1628
1629         if (chip->chip_type != TYPE_VIA686) {
1630                 /* use slot 10/11 */
1631                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1632         }
1633
1634         return 0;
1635 }
1636
1637 #ifdef SUPPORT_JOYSTICK
1638 #define JOYSTICK_ADDR   0x200
1639 static int __devinit snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1640 {
1641         struct gameport *gp;
1642         struct resource *r;
1643
1644         if (!joystick[dev])
1645                 return -ENODEV;
1646
1647         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1648         if (!r) {
1649                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n", JOYSTICK_ADDR);
1650                 return -EBUSY;
1651         }
1652
1653         chip->gameport = gp = gameport_allocate_port();
1654         if (!gp) {
1655                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1656                 release_resource(r);
1657                 kfree_nocheck(r);
1658                 return -ENOMEM;
1659         }
1660
1661         gameport_set_name(gp, "VIA686 Gameport");
1662         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1663         gameport_set_dev_parent(gp, &chip->pci->dev);
1664         gp->io = JOYSTICK_ADDR;
1665         gameport_set_port_data(gp, r);
1666
1667         /* Enable legacy joystick port */
1668         *legacy |= VIA_FUNC_ENABLE_GAME;
1669         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1670
1671         gameport_register_port(chip->gameport);
1672
1673         return 0;
1674 }
1675
1676 static void snd_via686_free_gameport(via82xx_t *chip)
1677 {
1678         if (chip->gameport) {
1679                 struct resource *r = gameport_get_port_data(chip->gameport);
1680
1681                 gameport_unregister_port(chip->gameport);
1682                 chip->gameport = NULL;
1683                 release_resource(r);
1684                 kfree_nocheck(r);
1685         }
1686 }
1687 #else
1688 static inline int snd_via686_create_gameport(via82xx_t *chip, int dev, unsigned char *legacy)
1689 {
1690         return -ENOSYS;
1691 }
1692 static inline void snd_via686_free_gameport(via82xx_t *chip) { }
1693 #endif
1694
1695
1696 /*
1697  *
1698  */
1699
1700 static int __devinit snd_via8233_init_misc(via82xx_t *chip, int dev)
1701 {
1702         int i, err, caps;
1703         unsigned char val;
1704
1705         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1706         for (i = 0; i < caps; i++) {
1707                 snd_via8233_capture_source.index = i;
1708                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1709                 if (err < 0)
1710                         return err;
1711         }
1712         if (ac97_can_spdif(chip->ac97)) {
1713                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1714                 if (err < 0)
1715                         return err;
1716         }
1717         if (chip->chip_type != TYPE_VIA8233A) {
1718                 /* when no h/w PCM volume control is found, use DXS volume control
1719                  * as the PCM vol control
1720                  */
1721                 snd_ctl_elem_id_t sid;
1722                 memset(&sid, 0, sizeof(sid));
1723                 strcpy(sid.name, "PCM Playback Volume");
1724                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1725                 if (! snd_ctl_find_id(chip->card, &sid)) {
1726                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1727                         if (err < 0)
1728                                 return err;
1729                 }
1730         }
1731
1732         /* select spdif data slot 10/11 */
1733         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1734         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1735         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1736         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1737
1738         return 0;
1739 }
1740
1741 static int __devinit snd_via686_init_misc(via82xx_t *chip, int dev)
1742 {
1743         unsigned char legacy, legacy_cfg;
1744         int rev_h = 0;
1745
1746         legacy = chip->old_legacy;
1747         legacy_cfg = chip->old_legacy_cfg;
1748         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1749         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1750         if (chip->revision >= VIA_REV_686_H) {
1751                 rev_h = 1;
1752                 if (mpu_port[dev] >= 0x200) {   /* force MIDI */
1753                         mpu_port[dev] &= 0xfffc;
1754                         pci_write_config_dword(chip->pci, 0x18, mpu_port[dev] | 0x01);
1755 #ifdef CONFIG_PM
1756                         chip->mpu_port_saved = mpu_port[dev];
1757 #endif
1758                 } else {
1759                         mpu_port[dev] = pci_resource_start(chip->pci, 2);
1760                 }
1761         } else {
1762                 switch (mpu_port[dev]) {        /* force MIDI */
1763                 case 0x300:
1764                 case 0x310:
1765                 case 0x320:
1766                 case 0x330:
1767                         legacy_cfg &= ~(3 << 2);
1768                         legacy_cfg |= (mpu_port[dev] & 0x0030) >> 2;
1769                         break;
1770                 default:                        /* no, use BIOS settings */
1771                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1772                                 mpu_port[dev] = 0x300 + ((legacy_cfg & 0x000c) << 2);
1773                         break;
1774                 }
1775         }
1776         if (mpu_port[dev] >= 0x200 &&
1777             (chip->mpu_res = request_region(mpu_port[dev], 2, "VIA82xx MPU401")) != NULL) {
1778                 if (rev_h)
1779                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1780                 legacy |= VIA_FUNC_ENABLE_MIDI;
1781         } else {
1782                 if (rev_h)
1783                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1784                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1785                 mpu_port[dev] = 0;
1786         }
1787
1788         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1789         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1790         if (chip->mpu_res) {
1791                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1792                                         mpu_port[dev], 1,
1793                                         chip->irq, 0, &chip->rmidi) < 0) {
1794                         printk(KERN_WARNING "unable to initialize MPU-401 at 0x%lx, skipping\n", mpu_port[dev]);
1795                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1796                 } else {
1797                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1798                 }
1799                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1800         }
1801
1802         snd_via686_create_gameport(chip, dev, &legacy);
1803
1804 #ifdef CONFIG_PM
1805         chip->legacy_saved = legacy;
1806         chip->legacy_cfg_saved = legacy_cfg;
1807 #endif
1808
1809         return 0;
1810 }
1811
1812
1813 /*
1814  * proc interface
1815  */
1816 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
1817 {
1818         via82xx_t *chip = entry->private_data;
1819         int i;
1820
1821         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
1822         for (i = 0; i < 0xa0; i += 4) {
1823                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
1824         }
1825 }
1826
1827 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
1828 {
1829         snd_info_entry_t *entry;
1830
1831         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
1832                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
1833 }
1834
1835 /*
1836  *
1837  */
1838
1839 static int snd_via82xx_chip_init(via82xx_t *chip)
1840 {
1841         unsigned int val;
1842         int max_count;
1843         unsigned char pval;
1844
1845 #if 0 /* broken on K7M? */
1846         if (chip->chip_type == TYPE_VIA686)
1847                 /* disable all legacy ports */
1848                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
1849 #endif
1850         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1851         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
1852                 /* deassert ACLink reset, force SYNC */
1853                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1854                                       VIA_ACLINK_CTRL_ENABLE |
1855                                       VIA_ACLINK_CTRL_RESET |
1856                                       VIA_ACLINK_CTRL_SYNC);
1857                 udelay(100);
1858 #if 1 /* FIXME: should we do full reset here for all chip models? */
1859                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
1860                 udelay(100);
1861 #else
1862                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
1863                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
1864                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
1865                 udelay(2);
1866 #endif
1867                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1868                 /* note - FM data out has trouble with non VRA codecs !! */
1869                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1870                 udelay(100);
1871         }
1872
1873         /* Make sure VRA is enabled, in case we didn't do a
1874          * complete codec reset, above */
1875         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
1876         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
1877                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
1878                 /* note - FM data out has trouble with non VRA codecs !! */
1879                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
1880                 udelay(100);
1881         }
1882
1883         /* wait until codec ready */
1884         max_count = ((3 * HZ) / 4) + 1;
1885         do {
1886                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
1887                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
1888                         break;
1889                 set_current_state(TASK_UNINTERRUPTIBLE);
1890                 schedule_timeout(1);
1891         } while (--max_count > 0);
1892
1893         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1894                 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
1895
1896 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
1897         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1898                                  VIA_REG_AC97_SECONDARY_VALID |
1899                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1900         max_count = ((3 * HZ) / 4) + 1;
1901         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1902                                  VIA_REG_AC97_SECONDARY_VALID |
1903                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1904         do {
1905                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1906                         chip->ac97_secondary = 1;
1907                         goto __ac97_ok2;
1908                 }
1909                 set_current_state(TASK_INTERRUPTIBLE);
1910                 schedule_timeout(1);
1911         } while (--max_count > 0);
1912         /* This is ok, the most of motherboards have only one codec */
1913
1914       __ac97_ok2:
1915 #endif
1916
1917         if (chip->chip_type == TYPE_VIA686) {
1918                 /* route FM trap to IRQ, disable FM trap */
1919                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1920                 /* disable all GPI interrupts */
1921                 outl(0, VIAREG(chip, GPI_INTR));
1922         }
1923
1924         if (chip->chip_type != TYPE_VIA686) {
1925                 /* Workaround for Award BIOS bug:
1926                  * DXS channels don't work properly with VRA if MC97 is disabled.
1927                  */
1928                 struct pci_dev *pci;
1929                 pci = pci_find_device(0x1106, 0x3068, NULL); /* MC97 */
1930                 if (pci) {
1931                         unsigned char data;
1932                         pci_read_config_byte(pci, 0x44, &data);
1933                         pci_write_config_byte(pci, 0x44, data | 0x40);
1934                 }
1935         }
1936
1937         if (chip->chip_type != TYPE_VIA8233A) {
1938                 int i, idx;
1939                 for (idx = 0; idx < 4; idx++) {
1940                         unsigned long port = chip->port + 0x10 * idx;
1941                         for (i = 0; i < 2; i++)
1942                                 outb(chip->playback_volume[i], port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1943                 }
1944         }
1945
1946         return 0;
1947 }
1948
1949 #ifdef CONFIG_PM
1950 /*
1951  * power management
1952  */
1953 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
1954 {
1955         via82xx_t *chip = card->pm_private_data;
1956         int i;
1957
1958         for (i = 0; i < 2; i++)
1959                 if (chip->pcms[i])
1960                         snd_pcm_suspend_all(chip->pcms[i]);
1961         for (i = 0; i < chip->num_devs; i++)
1962                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1963         synchronize_irq(chip->irq);
1964         snd_ac97_suspend(chip->ac97);
1965
1966         /* save misc values */
1967         if (chip->chip_type != TYPE_VIA686) {
1968                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
1969                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
1970                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1971         }
1972
1973         pci_set_power_state(chip->pci, 3);
1974         pci_disable_device(chip->pci);
1975         return 0;
1976 }
1977
1978 static int snd_via82xx_resume(snd_card_t *card)
1979 {
1980         via82xx_t *chip = card->pm_private_data;
1981         int i;
1982
1983         pci_enable_device(chip->pci);
1984         pci_set_power_state(chip->pci, 0);
1985
1986         snd_via82xx_chip_init(chip);
1987
1988         if (chip->chip_type == TYPE_VIA686) {
1989                 if (chip->mpu_port_saved)
1990                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
1991                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
1992                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
1993         } else {
1994                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
1995                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
1996                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
1997         }
1998
1999         snd_ac97_resume(chip->ac97);
2000
2001         for (i = 0; i < chip->num_devs; i++)
2002                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2003
2004         return 0;
2005 }
2006 #endif /* CONFIG_PM */
2007
2008 static int snd_via82xx_free(via82xx_t *chip)
2009 {
2010         unsigned int i;
2011
2012         if (chip->irq < 0)
2013                 goto __end_hw;
2014         /* disable interrupts */
2015         for (i = 0; i < chip->num_devs; i++)
2016                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2017         synchronize_irq(chip->irq);
2018       __end_hw:
2019         if (chip->irq >= 0)
2020                 free_irq(chip->irq, (void *)chip);
2021         if (chip->mpu_res) {
2022                 release_resource(chip->mpu_res);
2023                 kfree_nocheck(chip->mpu_res);
2024         }
2025         pci_release_regions(chip->pci);
2026
2027         if (chip->chip_type == TYPE_VIA686) {
2028                 snd_via686_free_gameport(chip);
2029                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2030                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2031         }
2032         pci_disable_device(chip->pci);
2033         kfree(chip);
2034         return 0;
2035 }
2036
2037 static int snd_via82xx_dev_free(snd_device_t *device)
2038 {
2039         via82xx_t *chip = device->device_data;
2040         return snd_via82xx_free(chip);
2041 }
2042
2043 static int __devinit snd_via82xx_create(snd_card_t * card,
2044                                         struct pci_dev *pci,
2045                                         int chip_type,
2046                                         int revision,
2047                                         unsigned int ac97_clock,
2048                                         via82xx_t ** r_via)
2049 {
2050         via82xx_t *chip;
2051         int err;
2052         static snd_device_ops_t ops = {
2053                 .dev_free =     snd_via82xx_dev_free,
2054         };
2055
2056         if ((err = pci_enable_device(pci)) < 0)
2057                 return err;
2058
2059         if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
2060                 pci_disable_device(pci);
2061                 return -ENOMEM;
2062         }
2063
2064         chip->chip_type = chip_type;
2065         chip->revision = revision;
2066
2067         spin_lock_init(&chip->reg_lock);
2068         spin_lock_init(&chip->rates[0].lock);
2069         spin_lock_init(&chip->rates[1].lock);
2070         chip->card = card;
2071         chip->pci = pci;
2072         chip->irq = -1;
2073
2074         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2075         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2076         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2077                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2078
2079         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2080                 kfree(chip);
2081                 pci_disable_device(pci);
2082                 return err;
2083         }
2084         chip->port = pci_resource_start(pci, 0);
2085         if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
2086                         card->driver, (void *)chip)) {
2087                 snd_printk("unable to grab IRQ %d\n", pci->irq);
2088                 snd_via82xx_free(chip);
2089                 return -EBUSY;
2090         }
2091         chip->irq = pci->irq;
2092         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2093                 chip->ac97_clock = ac97_clock;
2094         synchronize_irq(chip->irq);
2095
2096         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2097                 snd_via82xx_free(chip);
2098                 return err;
2099         }
2100
2101         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2102                 snd_via82xx_free(chip);
2103                 return err;
2104         }
2105
2106         /* The 8233 ac97 controller does not implement the master bit
2107          * in the pci command register. IMHO this is a violation of the PCI spec.
2108          * We call pci_set_master here because it does not hurt. */
2109         pci_set_master(pci);
2110
2111         snd_card_set_dev(card, &pci->dev);
2112
2113         *r_via = chip;
2114         return 0;
2115 }
2116
2117 struct via823x_info {
2118         int revision;
2119         char *name;
2120         int type;
2121 };
2122 static struct via823x_info via823x_cards[] __devinitdata = {
2123         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2124         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2125         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2126         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2127         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2128         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2129 };
2130
2131 /*
2132  * auto detection of DXS channel supports.
2133  */
2134 struct dxs_whitelist {
2135         unsigned short vendor;
2136         unsigned short device;
2137         unsigned short mask;
2138         short action;   /* new dxs_support value */
2139 };
2140
2141 static int __devinit check_dxs_list(struct pci_dev *pci)
2142 {
2143         static struct dxs_whitelist whitelist[] = {
2144                 { .vendor = 0x1005, .device = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2145                 { .vendor = 0x1019, .device = 0x0996, .action = VIA_DXS_48K },
2146                 { .vendor = 0x1019, .device = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2147                 { .vendor = 0x1019, .device = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2148                 { .vendor = 0x1025, .device = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2149                 { .vendor = 0x1043, .device = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2150                 { .vendor = 0x1043, .device = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2151                 { .vendor = 0x1043, .device = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/
2152                 { .vendor = 0x1071, .device = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2153                 { .vendor = 0x10cf, .device = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2154                 { .vendor = 0x1106, .device = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2155                 { .vendor = 0x1106, .device = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2156                 { .vendor = 0x1106, .device = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2157                 { .vendor = 0x1297, .device = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2158                 { .vendor = 0x1297, .device = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2159                 { .vendor = 0x1458, .device = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2160                 { .vendor = 0x1462, .device = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2161                 { .vendor = 0x1462, .device = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2162                 { .vendor = 0x1462, .device = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2163                 { .vendor = 0x1462, .device = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2164                 { .vendor = 0x147b, .device = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2165                 { .vendor = 0x147b, .device = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2166                 { .vendor = 0x147b, .device = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2167                 { .vendor = 0x147b, .device = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2168                 { .vendor = 0x14ff, .device = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2169                 { .vendor = 0x1584, .device = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2170                 { .vendor = 0x1584, .device = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2171                 { .vendor = 0x161f, .device = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2172                 { .vendor = 0x161f, .device = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2173                 { .vendor = 0x1631, .device = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2174                 { .vendor = 0x1695, .device = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2175                 { .vendor = 0x1849, .device = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2176                 { } /* terminator */
2177         };
2178         struct dxs_whitelist *w;
2179         unsigned short subsystem_vendor;
2180         unsigned short subsystem_device;
2181
2182         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2183         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2184
2185         for (w = whitelist; w->vendor; w++) {
2186                 if (w->vendor != subsystem_vendor)
2187                         continue;
2188                 if (w->mask) {
2189                         if ((w->mask & subsystem_device) == w->device)
2190                                 return w->action;
2191                 } else {
2192                         if (subsystem_device == w->device)
2193                                 return w->action;
2194                 }
2195         }
2196
2197         /*
2198          * not detected, try 48k rate only to be sure.
2199          */
2200         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2201         printk(KERN_INFO "         Please try dxs_support=1 or dxs_support=4 option\n");
2202         printk(KERN_INFO "         and report if it works on your machine.\n");
2203         return VIA_DXS_48K;
2204 };
2205
2206 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2207                                        const struct pci_device_id *pci_id)
2208 {
2209         static int dev;
2210         snd_card_t *card;
2211         via82xx_t *chip;
2212         unsigned char revision;
2213         int chip_type = 0, card_type;
2214         unsigned int i;
2215         int err;
2216
2217         if (dev >= SNDRV_CARDS)
2218                 return -ENODEV;
2219         if (!enable[dev]) {
2220                 dev++;
2221                 return -ENOENT;
2222         }
2223
2224         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
2225         if (card == NULL)
2226                 return -ENOMEM;
2227
2228         card_type = pci_id->driver_data;
2229         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2230         switch (card_type) {
2231         case TYPE_CARD_VIA686:
2232                 strcpy(card->driver, "VIA686A");
2233                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2234                 chip_type = TYPE_VIA686;
2235                 break;
2236         case TYPE_CARD_VIA8233:
2237                 chip_type = TYPE_VIA8233;
2238                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2239                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2240                         if (revision == via823x_cards[i].revision) {
2241                                 chip_type = via823x_cards[i].type;
2242                                 strcpy(card->shortname, via823x_cards[i].name);
2243                                 break;
2244                         }
2245                 }
2246                 if (chip_type != TYPE_VIA8233A) {
2247                         if (dxs_support[dev] == VIA_DXS_AUTO)
2248                                 dxs_support[dev] = check_dxs_list(pci);
2249                         /* force to use VIA8233 or 8233A model according to
2250                          * dxs_support module option
2251                          */
2252                         if (dxs_support[dev] == VIA_DXS_DISABLE)
2253                                 chip_type = TYPE_VIA8233A;
2254                         else
2255                                 chip_type = TYPE_VIA8233;
2256                 }
2257                 if (chip_type == TYPE_VIA8233A)
2258                         strcpy(card->driver, "VIA8233A");
2259                 else if (revision >= VIA_REV_8237)
2260                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2261                 else
2262                         strcpy(card->driver, "VIA8233");
2263                 break;
2264         default:
2265                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2266                 err = -EINVAL;
2267                 goto __error;
2268         }
2269
2270         if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
2271                 goto __error;
2272         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk[dev])) < 0)
2273                 goto __error;
2274
2275         if (chip_type == TYPE_VIA686) {
2276                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2277                     (err = snd_via686_init_misc(chip, dev)) < 0)
2278                         goto __error;
2279         } else {
2280                 if (chip_type == TYPE_VIA8233A) {
2281                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2282                                 goto __error;
2283                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2284                 } else {
2285                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2286                                 goto __error;
2287                         if (dxs_support[dev] == VIA_DXS_48K)
2288                                 chip->dxs_fixed = 1;
2289                         else if (dxs_support[dev] == VIA_DXS_NO_VRA)
2290                                 chip->no_vra = 1;
2291                 }
2292                 if ((err = snd_via8233_init_misc(chip, dev)) < 0)
2293                         goto __error;
2294         }
2295
2296         snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
2297
2298         /* disable interrupts */
2299         for (i = 0; i < chip->num_devs; i++)
2300                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2301
2302         snprintf(card->longname, sizeof(card->longname),
2303                  "%s with %s at %#lx, irq %d", card->shortname,
2304                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2305
2306         snd_via82xx_proc_init(chip);
2307
2308         if ((err = snd_card_register(card)) < 0) {
2309                 snd_card_free(card);
2310                 return err;
2311         }
2312         pci_set_drvdata(pci, card);
2313         dev++;
2314         return 0;
2315
2316  __error:
2317         snd_card_free(card);
2318         return err;
2319 }
2320
2321 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2322 {
2323         snd_card_free(pci_get_drvdata(pci));
2324         pci_set_drvdata(pci, NULL);
2325 }
2326
2327 static struct pci_driver driver = {
2328         .name = "VIA 82xx Audio",
2329         .id_table = snd_via82xx_ids,
2330         .probe = snd_via82xx_probe,
2331         .remove = __devexit_p(snd_via82xx_remove),
2332         SND_PCI_PM_CALLBACKS
2333 };
2334
2335 static int __init alsa_card_via82xx_init(void)
2336 {
2337         return pci_module_init(&driver);
2338 }
2339
2340 static void __exit alsa_card_via82xx_exit(void)
2341 {
2342         pci_unregister_driver(&driver);
2343 }
2344
2345 module_init(alsa_card_via82xx_init)
2346 module_exit(alsa_card_via82xx_exit)