sound/pci/via82xx.c

   1 /*
   2  *   ALSA driver for VIA VT82xx (South Bridge)
   3  *
   4  *   VT82C686A/B/C, VT8233A/C, VT8235
   5  *
   6  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8  *                    2002 Takashi Iwai <tiwai@suse.de>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 /*
  27  * Changes:
  28  *
  29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30  *      - use the DSX channels for the first pcm playback.
  31  *        (on VIA8233, 8233C and 8235 only)
  32  *        this will allow you play simultaneously up to 4 streams.
  33  *        multi-channel playback is assigned to the second device
  34  *        on these chips.
  35  *      - support the secondary capture (on VIA8233/C,8235)
  36  *      - SPDIF support
  37  *        the DSX3 channel can be used for SPDIF output.
  38  *        on VIA8233A, this channel is assigned to the second pcm
  39  *        playback.
  40  *        the card config of alsa-lib will assign the correct
  41  *        device for applications.
  42  *      - clean up the code, separate low-level initialization
  43  *        routines for each chipset.
  44  *
  45  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46  *      - Optimize position calculation for the 823x chips.
  47  */
  48
  49 #include <asm/io.h>
  50 #include <linux/delay.h>
  51 #include <linux/interrupt.h>
  52 #include <linux/init.h>
  53 #include <linux/pci.h>
  54 #include <linux/slab.h>
  55 #include <linux/gameport.h>
  56 #include <linux/moduleparam.h>
  57 #include <sound/core.h>
  58 #include <sound/pcm.h>
  59 #include <sound/pcm_params.h>
  60 #include <sound/info.h>
  61 #include <sound/tlv.h>
  62 #include <sound/ac97_codec.h>
  63 #include <sound/mpu401.h>
  64 #include <sound/initval.h>
  65
  66 #if 0
  67 #define POINTER_DEBUG
  68 #endif
  69
  70 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71 MODULE_DESCRIPTION("VIA VT82xx audio");
  72 MODULE_LICENSE("GPL");
  73 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  74
  75 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  76 #define SUPPORT_JOYSTICK 1
  77 #endif
  78
  79 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81 static long mpu_port;
  82 #ifdef SUPPORT_JOYSTICK
  83 static int joystick;
  84 #endif
  85 static int ac97_clock = 48000;
  86 static char *ac97_quirk;
  87 static int dxs_support;
  88
  89 module_param(index, int, 0444);
  90 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  91 module_param(id, charp, 0444);
  92 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  93 module_param(mpu_port, long, 0444);
  94 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  95 #ifdef SUPPORT_JOYSTICK
  96 module_param(joystick, bool, 0444);
  97 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  98 #endif
  99 module_param(ac97_clock, int, 0444);
 100 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 101 module_param(ac97_quirk, charp, 0444);
 102 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 103 module_param(dxs_support, int, 0444);
 104 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 105
 106 /* just for backward compatibility */
 107 static int enable;
 108 module_param(enable, bool, 0444);
 109
 110
 111 /* revision numbers for via686 */
 112 #define VIA_REV_686_A           0x10
 113 #define VIA_REV_686_B           0x11
 114 #define VIA_REV_686_C           0x12
 115 #define VIA_REV_686_D           0x13
 116 #define VIA_REV_686_E           0x14
 117 #define VIA_REV_686_H           0x20
 118
 119 /* revision numbers for via8233 */
 120 #define VIA_REV_PRE_8233        0x10    /* not in market */
 121 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 122 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 123 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 124 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 125 #define VIA_REV_8237            0x60
 126 #define VIA_REV_8251            0x70
 127
 128 /*
 129  *  Direct registers
 130  */
 131
 132 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 133 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 134
 135 /* common offsets */
 136 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 137 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 138 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 139 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 140 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 141 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 142 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
 143 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 144 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 145 #define   VIA_REG_CTRL_START            0x80    /* WO */
 146 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 147 #define   VIA_REG_CTRL_AUTOSTART        0x20
 148 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 149 #define   VIA_REG_CTRL_INT_STOP         0x04
 150 #define   VIA_REG_CTRL_INT_EOL          0x02
 151 #define   VIA_REG_CTRL_INT_FLAG         0x01
 152 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 153 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 154 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 155 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 156 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 157 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 158 #define   VIA_REG_TYPE_INT_LLINE        0x00
 159 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 160 #define   VIA_REG_TYPE_INT_LESSONE      0x08
 161 #define   VIA_REG_TYPE_INT_MASK         0x0c
 162 #define   VIA_REG_TYPE_INT_EOL          0x02
 163 #define   VIA_REG_TYPE_INT_FLAG         0x01
 164 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 165 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 166 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 167 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 168 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 169 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 170 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 171
 172 #define DEFINE_VIA_REGSET(name,val) \
 173 enum {\
 174         VIA_REG_##name##_STATUS         = (val),\
 175         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 176         VIA_REG_##name##_TYPE           = (val) + 0x02,\
 177         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 178         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 179         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 180         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 181 }
 182
 183 /* playback block */
 184 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 185 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 186 DEFINE_VIA_REGSET(FM, 0x20);
 187
 188 /* AC'97 */
 189 #define VIA_REG_AC97                    0x80    /* dword */
 190 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 191 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 192 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 193 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 194 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 195 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 196 #define   VIA_REG_AC97_BUSY             (1<<24)
 197 #define   VIA_REG_AC97_READ             (1<<23)
 198 #define   VIA_REG_AC97_CMD_SHIFT        16
 199 #define   VIA_REG_AC97_CMD_MASK         0x7e
 200 #define   VIA_REG_AC97_DATA_SHIFT       0
 201 #define   VIA_REG_AC97_DATA_MASK        0xffff
 202
 203 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
 204 /* via686 */
 205 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 206 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 207 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 208 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 209 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 210 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 211 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 212 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 213 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 214 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 215 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 216 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 217 /* via8233 */
 218 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 219 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 220 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 221 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 222 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 223 #define   VIA8233_REG_SGD_CHAN_SDX      0
 224 #define   VIA8233_REG_SGD_CHAN_MULTI    4
 225 #define   VIA8233_REG_SGD_CHAN_REC      6
 226 #define   VIA8233_REG_SGD_CHAN_REC1     7
 227
 228 #define VIA_REG_GPI_STATUS              0x88
 229 #define VIA_REG_GPI_INTR                0x8c
 230
 231 /* multi-channel and capture registers for via8233 */
 232 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 233 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 234
 235 /* via8233-specific registers */
 236 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 237 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 238 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 239 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 240 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 241 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 242 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 243 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 244
 245 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 246
 247 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 248 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 249 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 250 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 251
 252 #define VIA_TBL_BIT_FLAG        0x40000000
 253 #define VIA_TBL_BIT_EOL         0x80000000
 254
 255 /* pci space */
 256 #define VIA_ACLINK_STAT         0x40
 257 #define  VIA_ACLINK_C11_READY   0x20
 258 #define  VIA_ACLINK_C10_READY   0x10
 259 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 260 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 261 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 262 #define VIA_ACLINK_CTRL         0x41
 263 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 264 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 265 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 266 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 267 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 268 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 269 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 270 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 271 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 272                                  VIA_ACLINK_CTRL_RESET|\
 273                                  VIA_ACLINK_CTRL_PCM|\
 274                                  VIA_ACLINK_CTRL_VRA)
 275 #define VIA_FUNC_ENABLE         0x42
 276 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 277 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 278 #define  VIA_FUNC_RX2C_WRITE    0x20
 279 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 280 #define  VIA_FUNC_ENABLE_GAME   0x08
 281 #define  VIA_FUNC_ENABLE_FM     0x04
 282 #define  VIA_FUNC_ENABLE_MIDI   0x02
 283 #define  VIA_FUNC_ENABLE_SB     0x01
 284 #define VIA_PNP_CONTROL         0x43
 285 #define VIA_FM_NMI_CTRL         0x48
 286 #define VIA8233_VOLCHG_CTRL     0x48
 287 #define VIA8233_SPDIF_CTRL      0x49
 288 #define  VIA8233_SPDIF_DX3      0x08
 289 #define  VIA8233_SPDIF_SLOT_MASK        0x03
 290 #define  VIA8233_SPDIF_SLOT_1011        0x00
 291 #define  VIA8233_SPDIF_SLOT_34          0x01
 292 #define  VIA8233_SPDIF_SLOT_78          0x02
 293 #define  VIA8233_SPDIF_SLOT_69          0x03
 294
 295 /*
 296  */
 297
 298 #define VIA_DXS_AUTO    0
 299 #define VIA_DXS_ENABLE  1
 300 #define VIA_DXS_DISABLE 2
 301 #define VIA_DXS_48K     3
 302 #define VIA_DXS_NO_VRA  4
 303 #define VIA_DXS_SRC     5
 304
 305
 306 /*
 307  * pcm stream
 308  */
 309
 310 struct snd_via_sg_table {
 311         unsigned int offset;
 312         unsigned int size;
 313 } ;
 314
 315 #define VIA_TABLE_SIZE  255
 316 #define VIA_MAX_BUFSIZE (1<<24)
 317
 318 struct viadev {
 319         unsigned int reg_offset;
 320         unsigned long port;
 321         int direction;  /* playback = 0, capture = 1 */
 322         struct snd_pcm_substream *substream;
 323         int running;
 324         unsigned int tbl_entries; /* # descriptors */
 325         struct snd_dma_buffer table;
 326         struct snd_via_sg_table *idx_table;
 327         /* for recovery from the unexpected pointer */
 328         unsigned int lastpos;
 329         unsigned int fragsize;
 330         unsigned int bufsize;
 331         unsigned int bufsize2;
 332         int hwptr_done;         /* processed frame position in the buffer */
 333         int in_interrupt;
 334         int shadow_shift;
 335 };
 336
 337
 338 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 339 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 340
 341 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 342
 343 struct via_rate_lock {
 344         spinlock_t lock;
 345         int rate;
 346         int used;
 347 };
 348
 349 struct via82xx {
 350         int irq;
 351
 352         unsigned long port;
 353         struct resource *mpu_res;
 354         int chip_type;
 355         unsigned char revision;
 356
 357         unsigned char old_legacy;
 358         unsigned char old_legacy_cfg;
 359 #ifdef CONFIG_PM
 360         unsigned char legacy_saved;
 361         unsigned char legacy_cfg_saved;
 362         unsigned char spdif_ctrl_saved;
 363         unsigned char capture_src_saved[2];
 364         unsigned int mpu_port_saved;
 365 #endif
 366
 367         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 368         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 369
 370         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 371
 372         struct pci_dev *pci;
 373         struct snd_card *card;
 374
 375         unsigned int num_devs;
 376         unsigned int playback_devno, multi_devno, capture_devno;
 377         struct viadev devs[VIA_MAX_DEVS];
 378         struct via_rate_lock rates[2]; /* playback and capture */
 379         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 380         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 381         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 382         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 383
 384         struct snd_pcm *pcms[2];
 385         struct snd_rawmidi *rmidi;
 386
 387         struct snd_ac97_bus *ac97_bus;
 388         struct snd_ac97 *ac97;
 389         unsigned int ac97_clock;
 390         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 391
 392         spinlock_t reg_lock;
 393         struct snd_info_entry *proc_entry;
 394
 395 #ifdef SUPPORT_JOYSTICK
 396         struct gameport *gameport;
 397 #endif
 398 };
 399
 400 static struct pci_device_id snd_via82xx_ids[] = {
 401         /* 0x1106, 0x3058 */
 402         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
 403         /* 0x1106, 0x3059 */
 404         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
 405         { 0, }
 406 };
 407
 408 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 409
 410 /*
 411  */
 412
 413 /*
 414  * allocate and initialize the descriptor buffers
 415  * periods = number of periods
 416  * fragsize = period size in bytes
 417  */
 418 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 419                            struct pci_dev *pci,
 420                            unsigned int periods, unsigned int fragsize)
 421 {
 422         unsigned int i, idx, ofs, rest;
 423         struct via82xx *chip = snd_pcm_substream_chip(substream);
 424
 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                         unsigned int addr;
 453
 454                         if (idx >= VIA_TABLE_SIZE) {
 455                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
 456                                 return -EINVAL;
 457                         }
 458                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 459                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 460                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, 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(struct viadev *dev, struct snd_pcm_substream *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         kfree(dev->idx_table);
 493         dev->idx_table = NULL;
 494         return 0;
 495 }
 496
 497 /*
 498  *  Basic I/O
 499  */
 500
 501 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 502 {
 503         return inl(VIAREG(chip, AC97));
 504 }
 505
 506 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 507 {
 508         outl(val, VIAREG(chip, AC97));
 509 }
 510
 511 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 512 {
 513         unsigned int timeout = 1000;    /* 1ms */
 514         unsigned int val;
 515
 516         while (timeout-- > 0) {
 517                 udelay(1);
 518                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 519                         return val & 0xffff;
 520         }
 521         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 522                    secondary, snd_via82xx_codec_xread(chip));
 523         return -EIO;
 524 }
 525
 526 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 527 {
 528         unsigned int timeout = 1000;    /* 1ms */
 529         unsigned int val, val1;
 530         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 531                                          VIA_REG_AC97_SECONDARY_VALID;
 532
 533         while (timeout-- > 0) {
 534                 val = snd_via82xx_codec_xread(chip);
 535                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 536                 if (val1 == stat)
 537                         return val & 0xffff;
 538                 udelay(1);
 539         }
 540         return -EIO;
 541 }
 542
 543 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 544 {
 545         struct via82xx *chip = ac97->private_data;
 546         int err;
 547         err = snd_via82xx_codec_ready(chip, ac97->num);
 548         /* here we need to wait fairly for long time.. */
 549         msleep(500);
 550 }
 551
 552 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 553                                     unsigned short reg,
 554                                     unsigned short val)
 555 {
 556         struct via82xx *chip = ac97->private_data;
 557         unsigned int xval;
 558
 559         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 560         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 561         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 562         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 563         snd_via82xx_codec_xwrite(chip, xval);
 564         snd_via82xx_codec_ready(chip, ac97->num);
 565 }
 566
 567 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 568 {
 569         struct via82xx *chip = ac97->private_data;
 570         unsigned int xval, val = 0xffff;
 571         int again = 0;
 572
 573         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 574         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 575         xval |= VIA_REG_AC97_READ;
 576         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 577         while (1) {
 578                 if (again++ > 3) {
 579                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 580                                    ac97->num, snd_via82xx_codec_xread(chip));
 581                         return 0xffff;
 582                 }
 583                 snd_via82xx_codec_xwrite(chip, xval);
 584                 udelay (20);
 585                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 586                         udelay(25);
 587                         val = snd_via82xx_codec_xread(chip);
 588                         break;
 589                 }
 590         }
 591         return val & 0xffff;
 592 }
 593
 594 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 595 {
 596         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 597              VIADEV_REG(viadev, OFFSET_CONTROL));
 598         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 599         udelay(50);
 600         /* disable interrupts */
 601         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 602         /* clear interrupts */
 603         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 604         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 605         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 606         viadev->lastpos = 0;
 607         viadev->hwptr_done = 0;
 608 }
 609
 610
 611 /*
 612  *  Interrupt handler
 613  *  Used for 686 and 8233A
 614  */
 615 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 616 {
 617         struct via82xx *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);
 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                 struct viadev *viadev = &chip->devs[i];
 633                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 634                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 635                         continue;
 636                 if (viadev->substream && viadev->running) {
 637                         /*
 638                          * Update hwptr_done based on 'period elapsed'
 639                          * interrupts. We'll use it, when the chip returns 0
 640                          * for OFFSET_CURR_COUNT.
 641                          */
 642                         if (c_status & VIA_REG_STAT_EOL)
 643                                 viadev->hwptr_done = 0;
 644                         else
 645                                 viadev->hwptr_done += viadev->fragsize;
 646                         viadev->in_interrupt = c_status;
 647                         spin_unlock(&chip->reg_lock);
 648                         snd_pcm_period_elapsed(viadev->substream);
 649                         spin_lock(&chip->reg_lock);
 650                         viadev->in_interrupt = 0;
 651                 }
 652                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 653         }
 654         spin_unlock(&chip->reg_lock);
 655         return IRQ_HANDLED;
 656 }
 657
 658 /*
 659  *  Interrupt handler
 660  */
 661 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 662 {
 663         struct via82xx *chip = dev_id;
 664         unsigned int status;
 665         unsigned int i;
 666         int irqreturn = 0;
 667
 668         /* check status for each stream */
 669         spin_lock(&chip->reg_lock);
 670         status = inl(VIAREG(chip, SGD_SHADOW));
 671
 672         for (i = 0; i < chip->num_devs; i++) {
 673                 struct viadev *viadev = &chip->devs[i];
 674                 struct snd_pcm_substream *substream;
 675                 unsigned char c_status, shadow_status;
 676
 677                 shadow_status = (status >> viadev->shadow_shift) &
 678                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 679                          VIA_REG_STAT_FLAG);
 680                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 681                 if (!c_status)
 682                         continue;
 683
 684                 substream = viadev->substream;
 685                 if (substream && viadev->running) {
 686                         /*
 687                          * Update hwptr_done based on 'period elapsed'
 688                          * interrupts. We'll use it, when the chip returns 0
 689                          * for OFFSET_CURR_COUNT.
 690                          */
 691                         if (c_status & VIA_REG_STAT_EOL)
 692                                 viadev->hwptr_done = 0;
 693                         else
 694                                 viadev->hwptr_done += viadev->fragsize;
 695                         viadev->in_interrupt = c_status;
 696                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 697                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 698                         spin_unlock(&chip->reg_lock);
 699
 700                         snd_pcm_period_elapsed(substream);
 701
 702                         spin_lock(&chip->reg_lock);
 703                         viadev->in_interrupt = 0;
 704                 }
 705                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 706                 irqreturn = 1;
 707         }
 708         spin_unlock(&chip->reg_lock);
 709         return IRQ_RETVAL(irqreturn);
 710 }
 711
 712 /*
 713  *  PCM callbacks
 714  */
 715
 716 /*
 717  * trigger callback
 718  */
 719 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 720 {
 721         struct via82xx *chip = snd_pcm_substream_chip(substream);
 722         struct viadev *viadev = substream->runtime->private_data;
 723         unsigned char val;
 724
 725         if (chip->chip_type != TYPE_VIA686)
 726                 val = VIA_REG_CTRL_INT;
 727         else
 728                 val = 0;
 729         switch (cmd) {
 730         case SNDRV_PCM_TRIGGER_START:
 731         case SNDRV_PCM_TRIGGER_RESUME:
 732                 val |= VIA_REG_CTRL_START;
 733                 viadev->running = 1;
 734                 break;
 735         case SNDRV_PCM_TRIGGER_STOP:
 736         case SNDRV_PCM_TRIGGER_SUSPEND:
 737                 val = VIA_REG_CTRL_TERMINATE;
 738                 viadev->running = 0;
 739                 break;
 740         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 741                 val |= VIA_REG_CTRL_PAUSE;
 742                 viadev->running = 0;
 743                 break;
 744         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 745                 viadev->running = 1;
 746                 break;
 747         default:
 748                 return -EINVAL;
 749         }
 750         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 751         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 752                 snd_via82xx_channel_reset(chip, viadev);
 753         return 0;
 754 }
 755
 756
 757 /*
 758  * pointer callbacks
 759  */
 760
 761 /*
 762  * calculate the linear position at the given sg-buffer index and the rest count
 763  */
 764
 765 #define check_invalid_pos(viadev,pos) \
 766         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 767                                      viadev->lastpos < viadev->bufsize2))
 768
 769 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 770                                            unsigned int count)
 771 {
 772         unsigned int size, base, res;
 773
 774         size = viadev->idx_table[idx].size;
 775         base = viadev->idx_table[idx].offset;
 776         res = base + size - count;
 777         if (res >= viadev->bufsize)
 778                 res -= viadev->bufsize;
 779
 780         /* check the validity of the calculated position */
 781         if (size < count) {
 782                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 783                            (int)size, (int)count);
 784                 res = viadev->lastpos;
 785         } else {
 786                 if (! count) {
 787                         /* Some mobos report count = 0 on the DMA boundary,
 788                          * i.e. count = size indeed.
 789                          * Let's check whether this step is above the expected size.
 790                          */
 791                         int delta = res - viadev->lastpos;
 792                         if (delta < 0)
 793                                 delta += viadev->bufsize;
 794                         if ((unsigned int)delta > viadev->fragsize)
 795                                 res = base;
 796                 }
 797                 if (check_invalid_pos(viadev, res)) {
 798 #ifdef POINTER_DEBUG
 799                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 800                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 801                                "count = 0x%x\n", idx, viadev->tbl_entries,
 802                                viadev->lastpos, viadev->bufsize2,
 803                                viadev->idx_table[idx].offset,
 804                                viadev->idx_table[idx].size, count);
 805 #endif
 806                         /* count register returns full size when end of buffer is reached */
 807                         res = base + size;
 808                         if (check_invalid_pos(viadev, res)) {
 809                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 810                                            "using last valid pointer\n");
 811                                 res = viadev->lastpos;
 812                         }
 813                 }
 814         }
 815         return res;
 816 }
 817
 818 /*
 819  * get the current pointer on via686
 820  */
 821 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 822 {
 823         struct via82xx *chip = snd_pcm_substream_chip(substream);
 824         struct viadev *viadev = substream->runtime->private_data;
 825         unsigned int idx, ptr, count, res;
 826
 827         if (snd_BUG_ON(!viadev->tbl_entries))
 828                 return 0;
 829         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 830                 return 0;
 831
 832         spin_lock(&chip->reg_lock);
 833         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 834         /* The via686a does not have the current index register,
 835          * so we need to calculate the index from CURR_PTR.
 836          */
 837         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 838         if (ptr <= (unsigned int)viadev->table.addr)
 839                 idx = 0;
 840         else /* CURR_PTR holds the address + 8 */
 841                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 842         res = calc_linear_pos(viadev, idx, count);
 843         viadev->lastpos = res; /* remember the last position */
 844         spin_unlock(&chip->reg_lock);
 845
 846         return bytes_to_frames(substream->runtime, res);
 847 }
 848
 849 /*
 850  * get the current pointer on via823x
 851  */
 852 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 853 {
 854         struct via82xx *chip = snd_pcm_substream_chip(substream);
 855         struct viadev *viadev = substream->runtime->private_data;
 856         unsigned int idx, count, res;
 857         int status;
 858
 859         if (snd_BUG_ON(!viadev->tbl_entries))
 860                 return 0;
 861
 862         spin_lock(&chip->reg_lock);
 863         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 864         status = viadev->in_interrupt;
 865         if (!status)
 866                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 867
 868         /* An apparent bug in the 8251 is worked around by sending a
 869          * REG_CTRL_START. */
 870         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 871                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 872
 873         if (!(status & VIA_REG_STAT_ACTIVE)) {
 874                 res = 0;
 875                 goto unlock;
 876         }
 877         if (count & 0xffffff) {
 878                 idx = count >> 24;
 879                 if (idx >= viadev->tbl_entries) {
 880 #ifdef POINTER_DEBUG
 881                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 882                                viadev->tbl_entries);
 883 #endif
 884                         res = viadev->lastpos;
 885                 } else {
 886                         count &= 0xffffff;
 887                         res = calc_linear_pos(viadev, idx, count);
 888                 }
 889         } else {
 890                 res = viadev->hwptr_done;
 891                 if (!viadev->in_interrupt) {
 892                         if (status & VIA_REG_STAT_EOL) {
 893                                 res = 0;
 894                         } else
 895                                 if (status & VIA_REG_STAT_FLAG) {
 896                                         res += viadev->fragsize;
 897                                 }
 898                 }
 899         }
 900 unlock:
 901         viadev->lastpos = res;
 902         spin_unlock(&chip->reg_lock);
 903
 904         return bytes_to_frames(substream->runtime, res);
 905 }
 906
 907
 908 /*
 909  * hw_params callback:
 910  * allocate the buffer and build up the buffer description table
 911  */
 912 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 913                                  struct snd_pcm_hw_params *hw_params)
 914 {
 915         struct via82xx *chip = snd_pcm_substream_chip(substream);
 916         struct viadev *viadev = substream->runtime->private_data;
 917         int err;
 918
 919         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 920         if (err < 0)
 921                 return err;
 922         err = build_via_table(viadev, substream, chip->pci,
 923                               params_periods(hw_params),
 924                               params_period_bytes(hw_params));
 925         if (err < 0)
 926                 return err;
 927
 928         return 0;
 929 }
 930
 931 /*
 932  * hw_free callback:
 933  * clean up the buffer description table and release the buffer
 934  */
 935 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 936 {
 937         struct via82xx *chip = snd_pcm_substream_chip(substream);
 938         struct viadev *viadev = substream->runtime->private_data;
 939
 940         clean_via_table(viadev, substream, chip->pci);
 941         snd_pcm_lib_free_pages(substream);
 942         return 0;
 943 }
 944
 945
 946 /*
 947  * set up the table pointer
 948  */
 949 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 950 {
 951         snd_via82xx_codec_ready(chip, 0);
 952         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 953         udelay(20);
 954         snd_via82xx_codec_ready(chip, 0);
 955 }
 956
 957 /*
 958  * prepare callback for playback and capture on via686
 959  */
 960 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 961                                 struct snd_pcm_runtime *runtime)
 962 {
 963         snd_via82xx_channel_reset(chip, viadev);
 964         /* this must be set after channel_reset */
 965         snd_via82xx_set_table_ptr(chip, viadev);
 966         outb(VIA_REG_TYPE_AUTOSTART |
 967              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 968              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 969              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 970              VIA_REG_TYPE_INT_EOL |
 971              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 972 }
 973
 974 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 975 {
 976         struct via82xx *chip = snd_pcm_substream_chip(substream);
 977         struct viadev *viadev = substream->runtime->private_data;
 978         struct snd_pcm_runtime *runtime = substream->runtime;
 979
 980         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 981         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 982         via686_setup_format(chip, viadev, runtime);
 983         return 0;
 984 }
 985
 986 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 987 {
 988         struct via82xx *chip = snd_pcm_substream_chip(substream);
 989         struct viadev *viadev = substream->runtime->private_data;
 990         struct snd_pcm_runtime *runtime = substream->runtime;
 991
 992         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 993         via686_setup_format(chip, viadev, runtime);
 994         return 0;
 995 }
 996
 997 /*
 998  * lock the current rate
 999  */
1000 static int via_lock_rate(struct via_rate_lock *rec, int rate)
1001 {
1002         int changed = 0;
1003
1004         spin_lock_irq(&rec->lock);
1005         if (rec->rate != rate) {
1006                 if (rec->rate && rec->used > 1) /* already set */
1007                         changed = -EINVAL;
1008                 else {
1009                         rec->rate = rate;
1010                         changed = 1;
1011                 }
1012         }
1013         spin_unlock_irq(&rec->lock);
1014         return changed;
1015 }
1016
1017 /*
1018  * prepare callback for DSX playback on via823x
1019  */
1020 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1021 {
1022         struct via82xx *chip = snd_pcm_substream_chip(substream);
1023         struct viadev *viadev = substream->runtime->private_data;
1024         struct snd_pcm_runtime *runtime = substream->runtime;
1025         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1026         int rate_changed;
1027         u32 rbits;
1028
1029         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1030                 return rate_changed;
1031         if (rate_changed)
1032                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1033                                   chip->no_vra ? 48000 : runtime->rate);
1034         if (chip->spdif_on && viadev->reg_offset == 0x30)
1035                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1036
1037         if (runtime->rate == 48000)
1038                 rbits = 0xfffff;
1039         else
1040                 rbits = (0x100000 / 48000) * runtime->rate +
1041                         ((0x100000 % 48000) * runtime->rate) / 48000;
1042         snd_BUG_ON(rbits & ~0xfffff);
1043         snd_via82xx_channel_reset(chip, viadev);
1044         snd_via82xx_set_table_ptr(chip, viadev);
1045         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1046              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1047         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1048              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1049         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1050              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1051              rbits | /* rate */
1052              0xff000000,    /* STOP index is never reached */
1053              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1054         udelay(20);
1055         snd_via82xx_codec_ready(chip, 0);
1056         return 0;
1057 }
1058
1059 /*
1060  * prepare callback for multi-channel playback on via823x
1061  */
1062 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1063 {
1064         struct via82xx *chip = snd_pcm_substream_chip(substream);
1065         struct viadev *viadev = substream->runtime->private_data;
1066         struct snd_pcm_runtime *runtime = substream->runtime;
1067         unsigned int slots;
1068         int fmt;
1069
1070         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1071                 return -EINVAL;
1072         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1073         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1074         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1075         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1076         snd_via82xx_channel_reset(chip, viadev);
1077         snd_via82xx_set_table_ptr(chip, viadev);
1078
1079         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1080                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1081         fmt |= runtime->channels << 4;
1082         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1083 #if 0
1084         if (chip->revision == VIA_REV_8233A)
1085                 slots = 0;
1086         else
1087 #endif
1088         {
1089                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1090                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1091                 switch (runtime->channels) {
1092                 case 1: slots = (1<<0) | (1<<4); break;
1093                 case 2: slots = (1<<0) | (2<<4); break;
1094                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1095                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1096                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1097                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1098                 default: slots = 0; break;
1099                 }
1100         }
1101         /* STOP index is never reached */
1102         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1103         udelay(20);
1104         snd_via82xx_codec_ready(chip, 0);
1105         return 0;
1106 }
1107
1108 /*
1109  * prepare callback for capture on via823x
1110  */
1111 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1112 {
1113         struct via82xx *chip = snd_pcm_substream_chip(substream);
1114         struct viadev *viadev = substream->runtime->private_data;
1115         struct snd_pcm_runtime *runtime = substream->runtime;
1116
1117         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1118                 return -EINVAL;
1119         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1120         snd_via82xx_channel_reset(chip, viadev);
1121         snd_via82xx_set_table_ptr(chip, viadev);
1122         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1123         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1124              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1125              0xff000000,    /* STOP index is never reached */
1126              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1127         udelay(20);
1128         snd_via82xx_codec_ready(chip, 0);
1129         return 0;
1130 }
1131
1132
1133 /*
1134  * pcm hardware definition, identical for both playback and capture
1135  */
1136 static struct snd_pcm_hardware snd_via82xx_hw =
1137 {
1138         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1139                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1140                                  SNDRV_PCM_INFO_MMAP_VALID |
1141                                  /* SNDRV_PCM_INFO_RESUME | */
1142                                  SNDRV_PCM_INFO_PAUSE),
1143         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1144         .rates =                SNDRV_PCM_RATE_48000,
1145         .rate_min =             48000,
1146         .rate_max =             48000,
1147         .channels_min =         1,
1148         .channels_max =         2,
1149         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1150         .period_bytes_min =     32,
1151         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1152         .periods_min =          2,
1153         .periods_max =          VIA_TABLE_SIZE / 2,
1154         .fifo_size =            0,
1155 };
1156
1157
1158 /*
1159  * open callback skeleton
1160  */
1161 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1162                                 struct snd_pcm_substream *substream)
1163 {
1164         struct snd_pcm_runtime *runtime = substream->runtime;
1165         int err;
1166         struct via_rate_lock *ratep;
1167
1168         runtime->hw = snd_via82xx_hw;
1169
1170         /* set the hw rate condition */
1171         ratep = &chip->rates[viadev->direction];
1172         spin_lock_irq(&ratep->lock);
1173         ratep->used++;
1174         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1175                 /* DXS#3 and spdif is on */
1176                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1177                 snd_pcm_limit_hw_rates(runtime);
1178         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1179                 /* fixed DXS playback rate */
1180                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1181                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1182         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1183                 /* use full SRC capabilities of DXS */
1184                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1185                                      SNDRV_PCM_RATE_8000_48000);
1186                 runtime->hw.rate_min = 8000;
1187                 runtime->hw.rate_max = 48000;
1188         } else if (! ratep->rate) {
1189                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1190                 runtime->hw.rates = chip->ac97->rates[idx];
1191                 snd_pcm_limit_hw_rates(runtime);
1192         } else {
1193                 /* a fixed rate */
1194                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1195                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1196         }
1197         spin_unlock_irq(&ratep->lock);
1198
1199         /* we may remove following constaint when we modify table entries
1200            in interrupt */
1201         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1202                 return err;
1203
1204         runtime->private_data = viadev;
1205         viadev->substream = substream;
1206
1207         return 0;
1208 }
1209
1210
1211 /*
1212  * open callback for playback on via686 and via823x DSX
1213  */
1214 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1215 {
1216         struct via82xx *chip = snd_pcm_substream_chip(substream);
1217         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1218         int err;
1219
1220         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1221                 return err;
1222         return 0;
1223 }
1224
1225 /*
1226  * open callback for playback on via823x multi-channel
1227  */
1228 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1229 {
1230         struct via82xx *chip = snd_pcm_substream_chip(substream);
1231         struct viadev *viadev = &chip->devs[chip->multi_devno];
1232         int err;
1233         /* channels constraint for VIA8233A
1234          * 3 and 5 channels are not supported
1235          */
1236         static unsigned int channels[] = {
1237                 1, 2, 4, 6
1238         };
1239         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1240                 .count = ARRAY_SIZE(channels),
1241                 .list = channels,
1242                 .mask = 0,
1243         };
1244
1245         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1246                 return err;
1247         substream->runtime->hw.channels_max = 6;
1248         if (chip->revision == VIA_REV_8233A)
1249                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1250                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1251                                            &hw_constraints_channels);
1252         return 0;
1253 }
1254
1255 /*
1256  * open callback for capture on via686 and via823x
1257  */
1258 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1259 {
1260         struct via82xx *chip = snd_pcm_substream_chip(substream);
1261         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1262
1263         return snd_via82xx_pcm_open(chip, viadev, substream);
1264 }
1265
1266 /*
1267  * close callback
1268  */
1269 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1270 {
1271         struct via82xx *chip = snd_pcm_substream_chip(substream);
1272         struct viadev *viadev = substream->runtime->private_data;
1273         struct via_rate_lock *ratep;
1274
1275         /* release the rate lock */
1276         ratep = &chip->rates[viadev->direction];
1277         spin_lock_irq(&ratep->lock);
1278         ratep->used--;
1279         if (! ratep->used)
1280                 ratep->rate = 0;
1281         spin_unlock_irq(&ratep->lock);
1282         if (! ratep->rate) {
1283                 if (! viadev->direction) {
1284                         snd_ac97_update_power(chip->ac97,
1285                                               AC97_PCM_FRONT_DAC_RATE, 0);
1286                         snd_ac97_update_power(chip->ac97,
1287                                               AC97_PCM_SURR_DAC_RATE, 0);
1288                         snd_ac97_update_power(chip->ac97,
1289                                               AC97_PCM_LFE_DAC_RATE, 0);
1290                 } else
1291                         snd_ac97_update_power(chip->ac97,
1292                                               AC97_PCM_LR_ADC_RATE, 0);
1293         }
1294         viadev->substream = NULL;
1295         return 0;
1296 }
1297
1298
1299 /* via686 playback callbacks */
1300 static struct snd_pcm_ops snd_via686_playback_ops = {
1301         .open =         snd_via82xx_playback_open,
1302         .close =        snd_via82xx_pcm_close,
1303         .ioctl =        snd_pcm_lib_ioctl,
1304         .hw_params =    snd_via82xx_hw_params,
1305         .hw_free =      snd_via82xx_hw_free,
1306         .prepare =      snd_via686_playback_prepare,
1307         .trigger =      snd_via82xx_pcm_trigger,
1308         .pointer =      snd_via686_pcm_pointer,
1309         .page =         snd_pcm_sgbuf_ops_page,
1310 };
1311
1312 /* via686 capture callbacks */
1313 static struct snd_pcm_ops snd_via686_capture_ops = {
1314         .open =         snd_via82xx_capture_open,
1315         .close =        snd_via82xx_pcm_close,
1316         .ioctl =        snd_pcm_lib_ioctl,
1317         .hw_params =    snd_via82xx_hw_params,
1318         .hw_free =      snd_via82xx_hw_free,
1319         .prepare =      snd_via686_capture_prepare,
1320         .trigger =      snd_via82xx_pcm_trigger,
1321         .pointer =      snd_via686_pcm_pointer,
1322         .page =         snd_pcm_sgbuf_ops_page,
1323 };
1324
1325 /* via823x DSX playback callbacks */
1326 static struct snd_pcm_ops snd_via8233_playback_ops = {
1327         .open =         snd_via82xx_playback_open,
1328         .close =        snd_via82xx_pcm_close,
1329         .ioctl =        snd_pcm_lib_ioctl,
1330         .hw_params =    snd_via82xx_hw_params,
1331         .hw_free =      snd_via82xx_hw_free,
1332         .prepare =      snd_via8233_playback_prepare,
1333         .trigger =      snd_via82xx_pcm_trigger,
1334         .pointer =      snd_via8233_pcm_pointer,
1335         .page =         snd_pcm_sgbuf_ops_page,
1336 };
1337
1338 /* via823x multi-channel playback callbacks */
1339 static struct snd_pcm_ops snd_via8233_multi_ops = {
1340         .open =         snd_via8233_multi_open,
1341         .close =        snd_via82xx_pcm_close,
1342         .ioctl =        snd_pcm_lib_ioctl,
1343         .hw_params =    snd_via82xx_hw_params,
1344         .hw_free =      snd_via82xx_hw_free,
1345         .prepare =      snd_via8233_multi_prepare,
1346         .trigger =      snd_via82xx_pcm_trigger,
1347         .pointer =      snd_via8233_pcm_pointer,
1348         .page =         snd_pcm_sgbuf_ops_page,
1349 };
1350
1351 /* via823x capture callbacks */
1352 static struct snd_pcm_ops snd_via8233_capture_ops = {
1353         .open =         snd_via82xx_capture_open,
1354         .close =        snd_via82xx_pcm_close,
1355         .ioctl =        snd_pcm_lib_ioctl,
1356         .hw_params =    snd_via82xx_hw_params,
1357         .hw_free =      snd_via82xx_hw_free,
1358         .prepare =      snd_via8233_capture_prepare,
1359         .trigger =      snd_via82xx_pcm_trigger,
1360         .pointer =      snd_via8233_pcm_pointer,
1361         .page =         snd_pcm_sgbuf_ops_page,
1362 };
1363
1364
1365 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1366                         int shadow_pos, int direction)
1367 {
1368         chip->devs[idx].reg_offset = reg_offset;
1369         chip->devs[idx].shadow_shift = shadow_pos * 4;
1370         chip->devs[idx].direction = direction;
1371         chip->devs[idx].port = chip->port + reg_offset;
1372 }
1373
1374 /*
1375  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1376  */
1377 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1378 {
1379         struct snd_pcm *pcm;
1380         int i, err;
1381
1382         chip->playback_devno = 0;       /* x 4 */
1383         chip->multi_devno = 4;          /* x 1 */
1384         chip->capture_devno = 5;        /* x 2 */
1385         chip->num_devs = 7;
1386         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1387
1388         /* PCM #0:  4 DSX playbacks and 1 capture */
1389         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1390         if (err < 0)
1391                 return err;
1392         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1393         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1394         pcm->private_data = chip;
1395         strcpy(pcm->name, chip->card->shortname);
1396         chip->pcms[0] = pcm;
1397         /* set up playbacks */
1398         for (i = 0; i < 4; i++)
1399                 init_viadev(chip, i, 0x10 * i, i, 0);
1400         /* capture */
1401         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1402
1403         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1404                                               snd_dma_pci_data(chip->pci),
1405                                               64*1024, VIA_MAX_BUFSIZE);
1406
1407         /* PCM #1:  multi-channel playback and 2nd capture */
1408         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1409         if (err < 0)
1410                 return err;
1411         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1412         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1413         pcm->private_data = chip;
1414         strcpy(pcm->name, chip->card->shortname);
1415         chip->pcms[1] = pcm;
1416         /* set up playback */
1417         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1418         /* set up capture */
1419         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1420
1421         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1422                                               snd_dma_pci_data(chip->pci),
1423                                               64*1024, VIA_MAX_BUFSIZE);
1424         return 0;
1425 }
1426
1427 /*
1428  * create pcm instances for VIA8233A
1429  */
1430 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1431 {
1432         struct snd_pcm *pcm;
1433         int err;
1434
1435         chip->multi_devno = 0;
1436         chip->playback_devno = 1;
1437         chip->capture_devno = 2;
1438         chip->num_devs = 3;
1439         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1440
1441         /* PCM #0:  multi-channel playback and capture */
1442         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1443         if (err < 0)
1444                 return err;
1445         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1446         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1447         pcm->private_data = chip;
1448         strcpy(pcm->name, chip->card->shortname);
1449         chip->pcms[0] = pcm;
1450         /* set up playback */
1451         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1452         /* capture */
1453         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1454
1455         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1456                                               snd_dma_pci_data(chip->pci),
1457                                               64*1024, VIA_MAX_BUFSIZE);
1458
1459         /* SPDIF supported? */
1460         if (! ac97_can_spdif(chip->ac97))
1461                 return 0;
1462
1463         /* PCM #1:  DXS3 playback (for spdif) */
1464         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1465         if (err < 0)
1466                 return err;
1467         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1468         pcm->private_data = chip;
1469         strcpy(pcm->name, chip->card->shortname);
1470         chip->pcms[1] = pcm;
1471         /* set up playback */
1472         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1473
1474         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1475                                               snd_dma_pci_data(chip->pci),
1476                                               64*1024, VIA_MAX_BUFSIZE);
1477         return 0;
1478 }
1479
1480 /*
1481  * create a pcm instance for via686a/b
1482  */
1483 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1484 {
1485         struct snd_pcm *pcm;
1486         int err;
1487
1488         chip->playback_devno = 0;
1489         chip->capture_devno = 1;
1490         chip->num_devs = 2;
1491         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1492
1493         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1494         if (err < 0)
1495                 return err;
1496         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1497         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1498         pcm->private_data = chip;
1499         strcpy(pcm->name, chip->card->shortname);
1500         chip->pcms[0] = pcm;
1501         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1502         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1503
1504         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1505                                               snd_dma_pci_data(chip->pci),
1506                                               64*1024, VIA_MAX_BUFSIZE);
1507         return 0;
1508 }
1509
1510
1511 /*
1512  *  Mixer part
1513  */
1514
1515 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1516                                            struct snd_ctl_elem_info *uinfo)
1517 {
1518         /* formerly they were "Line" and "Mic", but it looks like that they
1519          * have nothing to do with the actual physical connections...
1520          */
1521         static char *texts[2] = {
1522                 "Input1", "Input2"
1523         };
1524         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1525         uinfo->count = 1;
1526         uinfo->value.enumerated.items = 2;
1527         if (uinfo->value.enumerated.item >= 2)
1528                 uinfo->value.enumerated.item = 1;
1529         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1530         return 0;
1531 }
1532
1533 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1534                                           struct snd_ctl_elem_value *ucontrol)
1535 {
1536         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1537         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1538         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1539         return 0;
1540 }
1541
1542 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1543                                           struct snd_ctl_elem_value *ucontrol)
1544 {
1545         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1546         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1547         u8 val, oval;
1548
1549         spin_lock_irq(&chip->reg_lock);
1550         oval = inb(port);
1551         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1552         if (ucontrol->value.enumerated.item[0])
1553                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1554         if (val != oval)
1555                 outb(val, port);
1556         spin_unlock_irq(&chip->reg_lock);
1557         return val != oval;
1558 }
1559
1560 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1561         .name = "Input Source Select",
1562         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1563         .info = snd_via8233_capture_source_info,
1564         .get = snd_via8233_capture_source_get,
1565         .put = snd_via8233_capture_source_put,
1566 };
1567
1568 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1569
1570 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1571                                       struct snd_ctl_elem_value *ucontrol)
1572 {
1573         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1574         u8 val;
1575
1576         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1577         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1578         return 0;
1579 }
1580
1581 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1582                                       struct snd_ctl_elem_value *ucontrol)
1583 {
1584         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1585         u8 val, oval;
1586
1587         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1588         val = oval & ~VIA8233_SPDIF_DX3;
1589         if (ucontrol->value.integer.value[0])
1590                 val |= VIA8233_SPDIF_DX3;
1591         /* save the spdif flag for rate filtering */
1592         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1593         if (val != oval) {
1594                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1595                 return 1;
1596         }
1597         return 0;
1598 }
1599
1600 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1601         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1602         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1603         .info = snd_via8233_dxs3_spdif_info,
1604         .get = snd_via8233_dxs3_spdif_get,
1605         .put = snd_via8233_dxs3_spdif_put,
1606 };
1607
1608 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1609                                        struct snd_ctl_elem_info *uinfo)
1610 {
1611         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1612         uinfo->count = 2;
1613         uinfo->value.integer.min = 0;
1614         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1615         return 0;
1616 }
1617
1618 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1619                                       struct snd_ctl_elem_value *ucontrol)
1620 {
1621         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1622         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1623
1624         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1625         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1626         return 0;
1627 }
1628
1629 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1630                                          struct snd_ctl_elem_value *ucontrol)
1631 {
1632         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1633         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1634         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1635         return 0;
1636 }
1637
1638 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1639                                       struct snd_ctl_elem_value *ucontrol)
1640 {
1641         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1642         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1643         unsigned long port = chip->port + 0x10 * idx;
1644         unsigned char val;
1645         int i, change = 0;
1646
1647         for (i = 0; i < 2; i++) {
1648                 val = ucontrol->value.integer.value[i];
1649                 if (val > VIA_DXS_MAX_VOLUME)
1650                         val = VIA_DXS_MAX_VOLUME;
1651                 val = VIA_DXS_MAX_VOLUME - val;
1652                 change |= val != chip->playback_volume[idx][i];
1653                 if (change) {
1654                         chip->playback_volume[idx][i] = val;
1655                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1656                 }
1657         }
1658         return change;
1659 }
1660
1661 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1662                                          struct snd_ctl_elem_value *ucontrol)
1663 {
1664         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1665         unsigned int idx;
1666         unsigned char val;
1667         int i, change = 0;
1668
1669         for (i = 0; i < 2; i++) {
1670                 val = ucontrol->value.integer.value[i];
1671                 if (val > VIA_DXS_MAX_VOLUME)
1672                         val = VIA_DXS_MAX_VOLUME;
1673                 val = VIA_DXS_MAX_VOLUME - val;
1674                 if (val != chip->playback_volume_c[i]) {
1675                         change = 1;
1676                         chip->playback_volume_c[i] = val;
1677                         for (idx = 0; idx < 4; idx++) {
1678                                 unsigned long port = chip->port + 0x10 * idx;
1679                                 chip->playback_volume[idx][i] = val;
1680                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1681                         }
1682                 }
1683         }
1684         return change;
1685 }
1686
1687 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -9450, 150, 1);
1688
1689 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1690         .name = "PCM Playback Volume",
1691         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1692         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1693                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1694         .info = snd_via8233_dxs_volume_info,
1695         .get = snd_via8233_pcmdxs_volume_get,
1696         .put = snd_via8233_pcmdxs_volume_put,
1697         .tlv = { .p = db_scale_dxs }
1698 };
1699
1700 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1701         .name = "VIA DXS Playback Volume",
1702         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1703         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1704                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1705         .count = 4,
1706         .info = snd_via8233_dxs_volume_info,
1707         .get = snd_via8233_dxs_volume_get,
1708         .put = snd_via8233_dxs_volume_put,
1709         .tlv = { .p = db_scale_dxs }
1710 };
1711
1712 /*
1713  */
1714
1715 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1716 {
1717         struct via82xx *chip = bus->private_data;
1718         chip->ac97_bus = NULL;
1719 }
1720
1721 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1722 {
1723         struct via82xx *chip = ac97->private_data;
1724         chip->ac97 = NULL;
1725 }
1726
1727 static struct ac97_quirk ac97_quirks[] = {
1728         {
1729                 .subvendor = 0x1106,
1730                 .subdevice = 0x4161,
1731                 .codec_id = 0x56494161, /* VT1612A */
1732                 .name = "Soltek SL-75DRV5",
1733                 .type = AC97_TUNE_NONE
1734         },
1735         {       /* FIXME: which codec? */
1736                 .subvendor = 0x1106,
1737                 .subdevice = 0x4161,
1738                 .name = "ASRock K7VT2",
1739                 .type = AC97_TUNE_HP_ONLY
1740         },
1741         {
1742                 .subvendor = 0x1019,
1743                 .subdevice = 0x0a81,
1744                 .name = "ECS K7VTA3",
1745                 .type = AC97_TUNE_HP_ONLY
1746         },
1747         {
1748                 .subvendor = 0x1019,
1749                 .subdevice = 0x0a85,
1750                 .name = "ECS L7VMM2",
1751                 .type = AC97_TUNE_HP_ONLY
1752         },
1753         {
1754                 .subvendor = 0x1019,
1755                 .subdevice = 0x1841,
1756                 .name = "ECS K7VTA3",
1757                 .type = AC97_TUNE_HP_ONLY
1758         },
1759         {
1760                 .subvendor = 0x1849,
1761                 .subdevice = 0x3059,
1762                 .name = "ASRock K7VM2",
1763                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1764         },
1765         {
1766                 .subvendor = 0x14cd,
1767                 .subdevice = 0x7002,
1768                 .name = "Unknown",
1769                 .type = AC97_TUNE_ALC_JACK
1770         },
1771         {
1772                 .subvendor = 0x1071,
1773                 .subdevice = 0x8590,
1774                 .name = "Mitac Mobo",
1775                 .type = AC97_TUNE_ALC_JACK
1776         },
1777         {
1778                 .subvendor = 0x161f,
1779                 .subdevice = 0x202b,
1780                 .name = "Arima Notebook",
1781                 .type = AC97_TUNE_HP_ONLY,
1782         },
1783         {
1784                 .subvendor = 0x161f,
1785                 .subdevice = 0x2032,
1786                 .name = "Targa Traveller 811",
1787                 .type = AC97_TUNE_HP_ONLY,
1788         },
1789         {
1790                 .subvendor = 0x161f,
1791                 .subdevice = 0x2032,
1792                 .name = "m680x",
1793                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1794         },
1795         {
1796                 .subvendor = 0x1297,
1797                 .subdevice = 0xa232,
1798                 .name = "Shuttle AK32VN",
1799                 .type = AC97_TUNE_HP_ONLY
1800         },
1801         { } /* terminator */
1802 };
1803
1804 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1805 {
1806         struct snd_ac97_template ac97;
1807         int err;
1808         static struct snd_ac97_bus_ops ops = {
1809                 .write = snd_via82xx_codec_write,
1810                 .read = snd_via82xx_codec_read,
1811                 .wait = snd_via82xx_codec_wait,
1812         };
1813
1814         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1815                 return err;
1816         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1817         chip->ac97_bus->clock = chip->ac97_clock;
1818
1819         memset(&ac97, 0, sizeof(ac97));
1820         ac97.private_data = chip;
1821         ac97.private_free = snd_via82xx_mixer_free_ac97;
1822         ac97.pci = chip->pci;
1823         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1824         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1825                 return err;
1826
1827         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1828
1829         if (chip->chip_type != TYPE_VIA686) {
1830                 /* use slot 10/11 */
1831                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1832         }
1833
1834         return 0;
1835 }
1836
1837 #ifdef SUPPORT_JOYSTICK
1838 #define JOYSTICK_ADDR   0x200
1839 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1840 {
1841         struct gameport *gp;
1842         struct resource *r;
1843
1844         if (!joystick)
1845                 return -ENODEV;
1846
1847         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1848         if (!r) {
1849                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1850                        JOYSTICK_ADDR);
1851                 return -EBUSY;
1852         }
1853
1854         chip->gameport = gp = gameport_allocate_port();
1855         if (!gp) {
1856                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1857                 release_and_free_resource(r);
1858                 return -ENOMEM;
1859         }
1860
1861         gameport_set_name(gp, "VIA686 Gameport");
1862         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1863         gameport_set_dev_parent(gp, &chip->pci->dev);
1864         gp->io = JOYSTICK_ADDR;
1865         gameport_set_port_data(gp, r);
1866
1867         /* Enable legacy joystick port */
1868         *legacy |= VIA_FUNC_ENABLE_GAME;
1869         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1870
1871         gameport_register_port(chip->gameport);
1872
1873         return 0;
1874 }
1875
1876 static void snd_via686_free_gameport(struct via82xx *chip)
1877 {
1878         if (chip->gameport) {
1879                 struct resource *r = gameport_get_port_data(chip->gameport);
1880
1881                 gameport_unregister_port(chip->gameport);
1882                 chip->gameport = NULL;
1883                 release_and_free_resource(r);
1884         }
1885 }
1886 #else
1887 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1888 {
1889         return -ENOSYS;
1890 }
1891 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1892 #endif
1893
1894
1895 /*
1896  *
1897  */
1898
1899 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1900 {
1901         int i, err, caps;
1902         unsigned char val;
1903
1904         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1905         for (i = 0; i < caps; i++) {
1906                 snd_via8233_capture_source.index = i;
1907                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1908                 if (err < 0)
1909                         return err;
1910         }
1911         if (ac97_can_spdif(chip->ac97)) {
1912                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1913                 if (err < 0)
1914                         return err;
1915         }
1916         if (chip->chip_type != TYPE_VIA8233A) {
1917                 /* when no h/w PCM volume control is found, use DXS volume control
1918                  * as the PCM vol control
1919                  */
1920                 struct snd_ctl_elem_id sid;
1921                 memset(&sid, 0, sizeof(sid));
1922                 strcpy(sid.name, "PCM Playback Volume");
1923                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1924                 if (! snd_ctl_find_id(chip->card, &sid)) {
1925                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1926                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1927                         if (err < 0)
1928                                 return err;
1929                 }
1930                 else /* Using DXS when PCM emulation is enabled is really weird */
1931                 {
1932                         /* Standalone DXS controls */
1933                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1934                         if (err < 0)
1935                                 return err;
1936                 }
1937         }
1938         /* select spdif data slot 10/11 */
1939         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1940         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1941         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1942         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1943
1944         return 0;
1945 }
1946
1947 static int __devinit snd_via686_init_misc(struct via82xx *chip)
1948 {
1949         unsigned char legacy, legacy_cfg;
1950         int rev_h = 0;
1951
1952         legacy = chip->old_legacy;
1953         legacy_cfg = chip->old_legacy_cfg;
1954         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1955         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1956         if (chip->revision >= VIA_REV_686_H) {
1957                 rev_h = 1;
1958                 if (mpu_port >= 0x200) {        /* force MIDI */
1959                         mpu_port &= 0xfffc;
1960                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1961 #ifdef CONFIG_PM
1962                         chip->mpu_port_saved = mpu_port;
1963 #endif
1964                 } else {
1965                         mpu_port = pci_resource_start(chip->pci, 2);
1966                 }
1967         } else {
1968                 switch (mpu_port) {     /* force MIDI */
1969                 case 0x300:
1970                 case 0x310:
1971                 case 0x320:
1972                 case 0x330:
1973                         legacy_cfg &= ~(3 << 2);
1974                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1975                         break;
1976                 default:                        /* no, use BIOS settings */
1977                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1978                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1979                         break;
1980                 }
1981         }
1982         if (mpu_port >= 0x200 &&
1983             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1984             != NULL) {
1985                 if (rev_h)
1986                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1987                 legacy |= VIA_FUNC_ENABLE_MIDI;
1988         } else {
1989                 if (rev_h)
1990                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1991                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1992                 mpu_port = 0;
1993         }
1994
1995         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1996         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1997         if (chip->mpu_res) {
1998                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1999                                         mpu_port, MPU401_INFO_INTEGRATED,
2000                                         chip->irq, 0, &chip->rmidi) < 0) {
2001                         printk(KERN_WARNING "unable to initialize MPU-401"
2002                                " at 0x%lx, skipping\n", mpu_port);
2003                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2004                 } else {
2005                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2006                 }
2007                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2008         }
2009
2010         snd_via686_create_gameport(chip, &legacy);
2011
2012 #ifdef CONFIG_PM
2013         chip->legacy_saved = legacy;
2014         chip->legacy_cfg_saved = legacy_cfg;
2015 #endif
2016
2017         return 0;
2018 }
2019
2020
2021 /*
2022  * proc interface
2023  */
2024 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2025                                   struct snd_info_buffer *buffer)
2026 {
2027         struct via82xx *chip = entry->private_data;
2028         int i;
2029
2030         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2031         for (i = 0; i < 0xa0; i += 4) {
2032                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2033         }
2034 }
2035
2036 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2037 {
2038         struct snd_info_entry *entry;
2039
2040         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2041                 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2042 }
2043
2044 /*
2045  *
2046  */
2047
2048 static int snd_via82xx_chip_init(struct via82xx *chip)
2049 {
2050         unsigned int val;
2051         unsigned long end_time;
2052         unsigned char pval;
2053
2054 #if 0 /* broken on K7M? */
2055         if (chip->chip_type == TYPE_VIA686)
2056                 /* disable all legacy ports */
2057                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2058 #endif
2059         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2060         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2061                 /* deassert ACLink reset, force SYNC */
2062                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2063                                       VIA_ACLINK_CTRL_ENABLE |
2064                                       VIA_ACLINK_CTRL_RESET |
2065                                       VIA_ACLINK_CTRL_SYNC);
2066                 udelay(100);
2067 #if 1 /* FIXME: should we do full reset here for all chip models? */
2068                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2069                 udelay(100);
2070 #else
2071                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2072                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2073                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2074                 udelay(2);
2075 #endif
2076                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2077                 /* note - FM data out has trouble with non VRA codecs !! */
2078                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2079                 udelay(100);
2080         }
2081
2082         /* Make sure VRA is enabled, in case we didn't do a
2083          * complete codec reset, above */
2084         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2085         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2086                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2087                 /* note - FM data out has trouble with non VRA codecs !! */
2088                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2089                 udelay(100);
2090         }
2091
2092         /* wait until codec ready */
2093         end_time = jiffies + msecs_to_jiffies(750);
2094         do {
2095                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2096                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2097                         break;
2098                 schedule_timeout_uninterruptible(1);
2099         } while (time_before(jiffies, end_time));
2100
2101         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2102                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2103
2104 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2105         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2106                                  VIA_REG_AC97_SECONDARY_VALID |
2107                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2108         end_time = jiffies + msecs_to_jiffies(750);
2109         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2110                                  VIA_REG_AC97_SECONDARY_VALID |
2111                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2112         do {
2113                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2114                         chip->ac97_secondary = 1;
2115                         goto __ac97_ok2;
2116                 }
2117                 schedule_timeout_uninterruptible(1);
2118         } while (time_before(jiffies, end_time));
2119         /* This is ok, the most of motherboards have only one codec */
2120
2121       __ac97_ok2:
2122 #endif
2123
2124         if (chip->chip_type == TYPE_VIA686) {
2125                 /* route FM trap to IRQ, disable FM trap */
2126                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2127                 /* disable all GPI interrupts */
2128                 outl(0, VIAREG(chip, GPI_INTR));
2129         }
2130
2131         if (chip->chip_type != TYPE_VIA686) {
2132                 /* Workaround for Award BIOS bug:
2133                  * DXS channels don't work properly with VRA if MC97 is disabled.
2134                  */
2135                 struct pci_dev *pci;
2136                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2137                 if (pci) {
2138                         unsigned char data;
2139                         pci_read_config_byte(pci, 0x44, &data);
2140                         pci_write_config_byte(pci, 0x44, data | 0x40);
2141                         pci_dev_put(pci);
2142                 }
2143         }
2144
2145         if (chip->chip_type != TYPE_VIA8233A) {
2146                 int i, idx;
2147                 for (idx = 0; idx < 4; idx++) {
2148                         unsigned long port = chip->port + 0x10 * idx;
2149                         for (i = 0; i < 2; i++) {
2150                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2151                                 outb(chip->playback_volume_c[i],
2152                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2153                         }
2154                 }
2155         }
2156
2157         return 0;
2158 }
2159
2160 #ifdef CONFIG_PM
2161 /*
2162  * power management
2163  */
2164 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2165 {
2166         struct snd_card *card = pci_get_drvdata(pci);
2167         struct via82xx *chip = card->private_data;
2168         int i;
2169
2170         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2171         for (i = 0; i < 2; i++)
2172                 snd_pcm_suspend_all(chip->pcms[i]);
2173         for (i = 0; i < chip->num_devs; i++)
2174                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2175         synchronize_irq(chip->irq);
2176         snd_ac97_suspend(chip->ac97);
2177
2178         /* save misc values */
2179         if (chip->chip_type != TYPE_VIA686) {
2180                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2181                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2182                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2183         }
2184
2185         pci_disable_device(pci);
2186         pci_save_state(pci);
2187         pci_set_power_state(pci, pci_choose_state(pci, state));
2188         return 0;
2189 }
2190
2191 static int snd_via82xx_resume(struct pci_dev *pci)
2192 {
2193         struct snd_card *card = pci_get_drvdata(pci);
2194         struct via82xx *chip = card->private_data;
2195         int i;
2196
2197         pci_set_power_state(pci, PCI_D0);
2198         pci_restore_state(pci);
2199         if (pci_enable_device(pci) < 0) {
2200                 printk(KERN_ERR "via82xx: pci_enable_device failed, "
2201                        "disabling device\n");
2202                 snd_card_disconnect(card);
2203                 return -EIO;
2204         }
2205         pci_set_master(pci);
2206
2207         snd_via82xx_chip_init(chip);
2208
2209         if (chip->chip_type == TYPE_VIA686) {
2210                 if (chip->mpu_port_saved)
2211                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2212                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2213                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2214         } else {
2215                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2216                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2217                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2218         }
2219
2220         snd_ac97_resume(chip->ac97);
2221
2222         for (i = 0; i < chip->num_devs; i++)
2223                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2224
2225         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2226         return 0;
2227 }
2228 #endif /* CONFIG_PM */
2229
2230 static int snd_via82xx_free(struct via82xx *chip)
2231 {
2232         unsigned int i;
2233
2234         if (chip->irq < 0)
2235                 goto __end_hw;
2236         /* disable interrupts */
2237         for (i = 0; i < chip->num_devs; i++)
2238                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2239
2240         if (chip->irq >= 0)
2241                 free_irq(chip->irq, chip);
2242  __end_hw:
2243         release_and_free_resource(chip->mpu_res);
2244         pci_release_regions(chip->pci);
2245
2246         if (chip->chip_type == TYPE_VIA686) {
2247                 snd_via686_free_gameport(chip);
2248                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2249                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2250         }
2251         pci_disable_device(chip->pci);
2252         kfree(chip);
2253         return 0;
2254 }
2255
2256 static int snd_via82xx_dev_free(struct snd_device *device)
2257 {
2258         struct via82xx *chip = device->device_data;
2259         return snd_via82xx_free(chip);
2260 }
2261
2262 static int __devinit snd_via82xx_create(struct snd_card *card,
2263                                         struct pci_dev *pci,
2264                                         int chip_type,
2265                                         int revision,
2266                                         unsigned int ac97_clock,
2267                                         struct via82xx ** r_via)
2268 {
2269         struct via82xx *chip;
2270         int err;
2271         static struct snd_device_ops ops = {
2272                 .dev_free =     snd_via82xx_dev_free,
2273         };
2274
2275         if ((err = pci_enable_device(pci)) < 0)
2276                 return err;
2277
2278         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2279                 pci_disable_device(pci);
2280                 return -ENOMEM;
2281         }
2282
2283         chip->chip_type = chip_type;
2284         chip->revision = revision;
2285
2286         spin_lock_init(&chip->reg_lock);
2287         spin_lock_init(&chip->rates[0].lock);
2288         spin_lock_init(&chip->rates[1].lock);
2289         chip->card = card;
2290         chip->pci = pci;
2291         chip->irq = -1;
2292
2293         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2294         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2295         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2296                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2297
2298         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2299                 kfree(chip);
2300                 pci_disable_device(pci);
2301                 return err;
2302         }
2303         chip->port = pci_resource_start(pci, 0);
2304         if (request_irq(pci->irq,
2305                         chip_type == TYPE_VIA8233 ?
2306                         snd_via8233_interrupt : snd_via686_interrupt,
2307                         IRQF_SHARED,
2308                         card->driver, chip)) {
2309                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2310                 snd_via82xx_free(chip);
2311                 return -EBUSY;
2312         }
2313         chip->irq = pci->irq;
2314         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2315                 chip->ac97_clock = ac97_clock;
2316         synchronize_irq(chip->irq);
2317
2318         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2319                 snd_via82xx_free(chip);
2320                 return err;
2321         }
2322
2323         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2324                 snd_via82xx_free(chip);
2325                 return err;
2326         }
2327
2328         /* The 8233 ac97 controller does not implement the master bit
2329          * in the pci command register. IMHO this is a violation of the PCI spec.
2330          * We call pci_set_master here because it does not hurt. */
2331         pci_set_master(pci);
2332
2333         snd_card_set_dev(card, &pci->dev);
2334
2335         *r_via = chip;
2336         return 0;
2337 }
2338
2339 struct via823x_info {
2340         int revision;
2341         char *name;
2342         int type;
2343 };
2344 static struct via823x_info via823x_cards[] __devinitdata = {
2345         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2346         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2347         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2348         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2349         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2350         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2351         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2352 };
2353
2354 /*
2355  * auto detection of DXS channel supports.
2356  */
2357
2358 static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2359         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2360         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2361         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2362         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2363         SND_PCI_QUIRK(0x1019, 0, "ESC K8", VIA_DXS_SRC),
2364         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2365         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2366         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2367         SND_PCI_QUIRK(0x1043, 0, "ASUS A7/A8", VIA_DXS_NO_VRA),
2368         SND_PCI_QUIRK(0x1071, 0, "Diverse Notebook", VIA_DXS_NO_VRA),
2369         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2370         SND_PCI_QUIRK(0x1106, 0, "ASRock", VIA_DXS_SRC),
2371         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2372         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2373         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2374         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2375         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2376         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2377         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2378         SND_PCI_QUIRK(0x1462, 0, "MSI Mobo", VIA_DXS_SRC),
2379         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2380         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2381         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2382         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2383         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2384         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2385         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2386         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2387         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2388         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2389         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2390         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2391         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2392         SND_PCI_QUIRK(0x1695, 0, "EPoX mobo", VIA_DXS_SRC),
2393         SND_PCI_QUIRK(0x16f3, 0, "Jetway K8", VIA_DXS_SRC),
2394         SND_PCI_QUIRK(0x1734, 0, "FSC Laptop", VIA_DXS_SRC),
2395         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2396         SND_PCI_QUIRK(0x1849, 0, "ASRock mobo", VIA_DXS_SRC),
2397         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2398         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2399         { } /* terminator */
2400 };
2401
2402 static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2403 {
2404         const struct snd_pci_quirk *w;
2405
2406         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2407         if (w) {
2408                 snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2409                             w->name);
2410                 return w->value;
2411         }
2412
2413         /* for newer revision, default to DXS_SRC */
2414         if (revision >= VIA_REV_8235)
2415                 return VIA_DXS_SRC;
2416
2417         /*
2418          * not detected, try 48k rate only to be sure.
2419          */
2420         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2421         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2422         printk(KERN_INFO "         and report if it works on your machine.\n");
2423         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2424         return VIA_DXS_48K;
2425 };
2426
2427 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2428                                        const struct pci_device_id *pci_id)
2429 {
2430         struct snd_card *card;
2431         struct via82xx *chip;
2432         int chip_type = 0, card_type;
2433         unsigned int i;
2434         int err;
2435
2436         card = snd_card_new(index, id, THIS_MODULE, 0);
2437         if (card == NULL)
2438                 return -ENOMEM;
2439
2440         card_type = pci_id->driver_data;
2441         switch (card_type) {
2442         case TYPE_CARD_VIA686:
2443                 strcpy(card->driver, "VIA686A");
2444                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2445                 chip_type = TYPE_VIA686;
2446                 break;
2447         case TYPE_CARD_VIA8233:
2448                 chip_type = TYPE_VIA8233;
2449                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2450                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2451                         if (pci->revision == via823x_cards[i].revision) {
2452                                 chip_type = via823x_cards[i].type;
2453                                 strcpy(card->shortname, via823x_cards[i].name);
2454                                 break;
2455                         }
2456                 }
2457                 if (chip_type != TYPE_VIA8233A) {
2458                         if (dxs_support == VIA_DXS_AUTO)
2459                                 dxs_support = check_dxs_list(pci, pci->revision);
2460                         /* force to use VIA8233 or 8233A model according to
2461                          * dxs_support module option
2462                          */
2463                         if (dxs_support == VIA_DXS_DISABLE)
2464                                 chip_type = TYPE_VIA8233A;
2465                         else
2466                                 chip_type = TYPE_VIA8233;
2467                 }
2468                 if (chip_type == TYPE_VIA8233A)
2469                         strcpy(card->driver, "VIA8233A");
2470                 else if (pci->revision >= VIA_REV_8237)
2471                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2472                 else
2473                         strcpy(card->driver, "VIA8233");
2474                 break;
2475         default:
2476                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2477                 err = -EINVAL;
2478                 goto __error;
2479         }
2480
2481         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2482                                       ac97_clock, &chip)) < 0)
2483                 goto __error;
2484         card->private_data = chip;
2485         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2486                 goto __error;
2487
2488         if (chip_type == TYPE_VIA686) {
2489                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2490                     (err = snd_via686_init_misc(chip)) < 0)
2491                         goto __error;
2492         } else {
2493                 if (chip_type == TYPE_VIA8233A) {
2494                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2495                                 goto __error;
2496                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2497                 } else {
2498                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2499                                 goto __error;
2500                         if (dxs_support == VIA_DXS_48K)
2501                                 chip->dxs_fixed = 1;
2502                         else if (dxs_support == VIA_DXS_NO_VRA)
2503                                 chip->no_vra = 1;
2504                         else if (dxs_support == VIA_DXS_SRC) {
2505                                 chip->no_vra = 1;
2506                                 chip->dxs_src = 1;
2507                         }
2508                 }
2509                 if ((err = snd_via8233_init_misc(chip)) < 0)
2510                         goto __error;
2511         }
2512
2513         /* disable interrupts */
2514         for (i = 0; i < chip->num_devs; i++)
2515                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2516
2517         snprintf(card->longname, sizeof(card->longname),
2518                  "%s with %s at %#lx, irq %d", card->shortname,
2519                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2520
2521         snd_via82xx_proc_init(chip);
2522
2523         if ((err = snd_card_register(card)) < 0) {
2524                 snd_card_free(card);
2525                 return err;
2526         }
2527         pci_set_drvdata(pci, card);
2528         return 0;
2529
2530  __error:
2531         snd_card_free(card);
2532         return err;
2533 }
2534
2535 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2536 {
2537         snd_card_free(pci_get_drvdata(pci));
2538         pci_set_drvdata(pci, NULL);
2539 }
2540
2541 static struct pci_driver driver = {
2542         .name = "VIA 82xx Audio",
2543         .id_table = snd_via82xx_ids,
2544         .probe = snd_via82xx_probe,
2545         .remove = __devexit_p(snd_via82xx_remove),
2546 #ifdef CONFIG_PM
2547         .suspend = snd_via82xx_suspend,
2548         .resume = snd_via82xx_resume,
2549 #endif
2550 };
2551
2552 static int __init alsa_card_via82xx_init(void)
2553 {
2554         return pci_register_driver(&driver);
2555 }
2556
2557 static void __exit alsa_card_via82xx_exit(void)
2558 {
2559         pci_unregister_driver(&driver);
2560 }
2561
2562 module_init(alsa_card_via82xx_init)
2563 module_exit(alsa_card_via82xx_exit)