linux/sound/pci/via82xx.c
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   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/module.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
  70MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71MODULE_DESCRIPTION("VIA VT82xx audio");
  72MODULE_LICENSE("GPL");
  73MODULE_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
  79static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81static long mpu_port;
  82#ifdef SUPPORT_JOYSTICK
  83static bool joystick;
  84#endif
  85static int ac97_clock = 48000;
  86static char *ac97_quirk;
  87static int dxs_support;
  88static int dxs_init_volume = 31;
  89static int nodelay;
  90
  91module_param(index, int, 0444);
  92MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  93module_param(id, charp, 0444);
  94MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  95module_param(mpu_port, long, 0444);
  96MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  97#ifdef SUPPORT_JOYSTICK
  98module_param(joystick, bool, 0444);
  99MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
 100#endif
 101module_param(ac97_clock, int, 0444);
 102MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 103module_param(ac97_quirk, charp, 0444);
 104MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 105module_param(dxs_support, int, 0444);
 106MODULE_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)");
 107module_param(dxs_init_volume, int, 0644);
 108MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
 109module_param(nodelay, int, 0444);
 110MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
 111
 112/* just for backward compatibility */
 113static bool enable;
 114module_param(enable, bool, 0444);
 115
 116
 117/* revision numbers for via686 */
 118#define VIA_REV_686_A           0x10
 119#define VIA_REV_686_B           0x11
 120#define VIA_REV_686_C           0x12
 121#define VIA_REV_686_D           0x13
 122#define VIA_REV_686_E           0x14
 123#define VIA_REV_686_H           0x20
 124
 125/* revision numbers for via8233 */
 126#define VIA_REV_PRE_8233        0x10    /* not in market */
 127#define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 128#define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 129#define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 130#define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 131#define VIA_REV_8237            0x60
 132#define VIA_REV_8251            0x70
 133
 134/*
 135 *  Direct registers
 136 */
 137
 138#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 139#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 140
 141/* common offsets */
 142#define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 143#define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 144#define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 145#define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 146#define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 147#define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 148#define   VIA_REG_STAT_EOL              0x02    /* RWC */
 149#define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 150#define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 151#define   VIA_REG_CTRL_START            0x80    /* WO */
 152#define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 153#define   VIA_REG_CTRL_AUTOSTART        0x20
 154#define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 155#define   VIA_REG_CTRL_INT_STOP         0x04            
 156#define   VIA_REG_CTRL_INT_EOL          0x02
 157#define   VIA_REG_CTRL_INT_FLAG         0x01
 158#define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 159#define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 160#define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 161#define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 162#define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 163#define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 164#define   VIA_REG_TYPE_INT_LLINE        0x00
 165#define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 166#define   VIA_REG_TYPE_INT_LESSONE      0x08
 167#define   VIA_REG_TYPE_INT_MASK         0x0c
 168#define   VIA_REG_TYPE_INT_EOL          0x02
 169#define   VIA_REG_TYPE_INT_FLAG         0x01
 170#define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 171#define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 172#define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 173#define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 174#define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 175#define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 176#define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 177
 178#define DEFINE_VIA_REGSET(name,val) \
 179enum {\
 180        VIA_REG_##name##_STATUS         = (val),\
 181        VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 182        VIA_REG_##name##_TYPE           = (val) + 0x02,\
 183        VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 184        VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 185        VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 186        VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 187}
 188
 189/* playback block */
 190DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 191DEFINE_VIA_REGSET(CAPTURE, 0x10);
 192DEFINE_VIA_REGSET(FM, 0x20);
 193
 194/* AC'97 */
 195#define VIA_REG_AC97                    0x80    /* dword */
 196#define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 197#define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 198#define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 199#define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 200#define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 201#define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 202#define   VIA_REG_AC97_BUSY             (1<<24)
 203#define   VIA_REG_AC97_READ             (1<<23)
 204#define   VIA_REG_AC97_CMD_SHIFT        16
 205#define   VIA_REG_AC97_CMD_MASK         0x7e
 206#define   VIA_REG_AC97_DATA_SHIFT       0
 207#define   VIA_REG_AC97_DATA_MASK        0xffff
 208
 209#define VIA_REG_SGD_SHADOW              0x84    /* dword */
 210/* via686 */
 211#define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 212#define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 213#define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 214#define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 215#define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 216#define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 217#define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 218#define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 219#define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 220#define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 221#define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 222#define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 223/* via8233 */
 224#define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 225#define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 226#define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 227#define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 228#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 229#define   VIA8233_REG_SGD_CHAN_SDX      0
 230#define   VIA8233_REG_SGD_CHAN_MULTI    4
 231#define   VIA8233_REG_SGD_CHAN_REC      6
 232#define   VIA8233_REG_SGD_CHAN_REC1     7
 233
 234#define VIA_REG_GPI_STATUS              0x88
 235#define VIA_REG_GPI_INTR                0x8c
 236
 237/* multi-channel and capture registers for via8233 */
 238DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 239DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 240
 241/* via8233-specific registers */
 242#define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 243#define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 244#define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 245#define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 246#define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 247#define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 248#define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 249#define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 250
 251#define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 252
 253#define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 254#define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 255#define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 256#define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 257
 258#define VIA_TBL_BIT_FLAG        0x40000000
 259#define VIA_TBL_BIT_EOL         0x80000000
 260
 261/* pci space */
 262#define VIA_ACLINK_STAT         0x40
 263#define  VIA_ACLINK_C11_READY   0x20
 264#define  VIA_ACLINK_C10_READY   0x10
 265#define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 266#define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 267#define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 268#define VIA_ACLINK_CTRL         0x41
 269#define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 270#define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 271#define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 272#define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 273#define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 274#define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 275#define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 276#define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 277#define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 278                                 VIA_ACLINK_CTRL_RESET|\
 279                                 VIA_ACLINK_CTRL_PCM|\
 280                                 VIA_ACLINK_CTRL_VRA)
 281#define VIA_FUNC_ENABLE         0x42
 282#define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 283#define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 284#define  VIA_FUNC_RX2C_WRITE    0x20
 285#define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 286#define  VIA_FUNC_ENABLE_GAME   0x08
 287#define  VIA_FUNC_ENABLE_FM     0x04
 288#define  VIA_FUNC_ENABLE_MIDI   0x02
 289#define  VIA_FUNC_ENABLE_SB     0x01
 290#define VIA_PNP_CONTROL         0x43
 291#define VIA_FM_NMI_CTRL         0x48
 292#define VIA8233_VOLCHG_CTRL     0x48
 293#define VIA8233_SPDIF_CTRL      0x49
 294#define  VIA8233_SPDIF_DX3      0x08
 295#define  VIA8233_SPDIF_SLOT_MASK        0x03
 296#define  VIA8233_SPDIF_SLOT_1011        0x00
 297#define  VIA8233_SPDIF_SLOT_34          0x01
 298#define  VIA8233_SPDIF_SLOT_78          0x02
 299#define  VIA8233_SPDIF_SLOT_69          0x03
 300
 301/*
 302 */
 303
 304#define VIA_DXS_AUTO    0
 305#define VIA_DXS_ENABLE  1
 306#define VIA_DXS_DISABLE 2
 307#define VIA_DXS_48K     3
 308#define VIA_DXS_NO_VRA  4
 309#define VIA_DXS_SRC     5
 310
 311
 312/*
 313 * pcm stream
 314 */
 315
 316struct snd_via_sg_table {
 317        unsigned int offset;
 318        unsigned int size;
 319} ;
 320
 321#define VIA_TABLE_SIZE  255
 322#define VIA_MAX_BUFSIZE (1<<24)
 323
 324struct viadev {
 325        unsigned int reg_offset;
 326        unsigned long port;
 327        int direction;  /* playback = 0, capture = 1 */
 328        struct snd_pcm_substream *substream;
 329        int running;
 330        unsigned int tbl_entries; /* # descriptors */
 331        struct snd_dma_buffer table;
 332        struct snd_via_sg_table *idx_table;
 333        /* for recovery from the unexpected pointer */
 334        unsigned int lastpos;
 335        unsigned int fragsize;
 336        unsigned int bufsize;
 337        unsigned int bufsize2;
 338        int hwptr_done;         /* processed frame position in the buffer */
 339        int in_interrupt;
 340        int shadow_shift;
 341};
 342
 343
 344enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 345enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 346
 347#define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 348
 349struct via_rate_lock {
 350        spinlock_t lock;
 351        int rate;
 352        int used;
 353};
 354
 355struct via82xx {
 356        int irq;
 357
 358        unsigned long port;
 359        struct resource *mpu_res;
 360        int chip_type;
 361        unsigned char revision;
 362
 363        unsigned char old_legacy;
 364        unsigned char old_legacy_cfg;
 365#ifdef CONFIG_PM_SLEEP
 366        unsigned char legacy_saved;
 367        unsigned char legacy_cfg_saved;
 368        unsigned char spdif_ctrl_saved;
 369        unsigned char capture_src_saved[2];
 370        unsigned int mpu_port_saved;
 371#endif
 372
 373        unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 374        unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 375
 376        unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 377
 378        struct pci_dev *pci;
 379        struct snd_card *card;
 380
 381        unsigned int num_devs;
 382        unsigned int playback_devno, multi_devno, capture_devno;
 383        struct viadev devs[VIA_MAX_DEVS];
 384        struct via_rate_lock rates[2]; /* playback and capture */
 385        unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 386        unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 387        unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 388        unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 389
 390        struct snd_pcm *pcms[2];
 391        struct snd_rawmidi *rmidi;
 392        struct snd_kcontrol *dxs_controls[4];
 393
 394        struct snd_ac97_bus *ac97_bus;
 395        struct snd_ac97 *ac97;
 396        unsigned int ac97_clock;
 397        unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 398
 399        spinlock_t reg_lock;
 400        struct snd_info_entry *proc_entry;
 401
 402#ifdef SUPPORT_JOYSTICK
 403        struct gameport *gameport;
 404#endif
 405};
 406
 407static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_ids) = {
 408        /* 0x1106, 0x3058 */
 409        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 410        /* 0x1106, 0x3059 */
 411        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 412        { 0, }
 413};
 414
 415MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 416
 417/*
 418 */
 419
 420/*
 421 * allocate and initialize the descriptor buffers
 422 * periods = number of periods
 423 * fragsize = period size in bytes
 424 */
 425static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 426                           struct pci_dev *pci,
 427                           unsigned int periods, unsigned int fragsize)
 428{
 429        unsigned int i, idx, ofs, rest;
 430        struct via82xx *chip = snd_pcm_substream_chip(substream);
 431
 432        if (dev->table.area == NULL) {
 433                /* the start of each lists must be aligned to 8 bytes,
 434                 * but the kernel pages are much bigger, so we don't care
 435                 */
 436                if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 437                                        PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 438                                        &dev->table) < 0)
 439                        return -ENOMEM;
 440        }
 441        if (! dev->idx_table) {
 442                dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 443                if (! dev->idx_table)
 444                        return -ENOMEM;
 445        }
 446
 447        /* fill the entries */
 448        idx = 0;
 449        ofs = 0;
 450        for (i = 0; i < periods; i++) {
 451                rest = fragsize;
 452                /* fill descriptors for a period.
 453                 * a period can be split to several descriptors if it's
 454                 * over page boundary.
 455                 */
 456                do {
 457                        unsigned int r;
 458                        unsigned int flag;
 459                        unsigned int addr;
 460
 461                        if (idx >= VIA_TABLE_SIZE) {
 462                                snd_printk(KERN_ERR "via82xx: too much table size!\n");
 463                                return -EINVAL;
 464                        }
 465                        addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 466                        ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 467                        r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 468                        rest -= r;
 469                        if (! rest) {
 470                                if (i == periods - 1)
 471                                        flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 472                                else
 473                                        flag = VIA_TBL_BIT_FLAG; /* period boundary */
 474                        } else
 475                                flag = 0; /* period continues to the next */
 476                        /*
 477                        printk(KERN_DEBUG "via: tbl %d: at %d  size %d "
 478                               "(rest %d)\n", idx, ofs, r, rest);
 479                        */
 480                        ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 481                        dev->idx_table[idx].offset = ofs;
 482                        dev->idx_table[idx].size = r;
 483                        ofs += r;
 484                        idx++;
 485                } while (rest > 0);
 486        }
 487        dev->tbl_entries = idx;
 488        dev->bufsize = periods * fragsize;
 489        dev->bufsize2 = dev->bufsize / 2;
 490        dev->fragsize = fragsize;
 491        return 0;
 492}
 493
 494
 495static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 496                           struct pci_dev *pci)
 497{
 498        if (dev->table.area) {
 499                snd_dma_free_pages(&dev->table);
 500                dev->table.area = NULL;
 501        }
 502        kfree(dev->idx_table);
 503        dev->idx_table = NULL;
 504        return 0;
 505}
 506
 507/*
 508 *  Basic I/O
 509 */
 510
 511static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 512{
 513        return inl(VIAREG(chip, AC97));
 514}
 515 
 516static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 517{
 518        outl(val, VIAREG(chip, AC97));
 519}
 520 
 521static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 522{
 523        unsigned int timeout = 1000;    /* 1ms */
 524        unsigned int val;
 525        
 526        while (timeout-- > 0) {
 527                udelay(1);
 528                if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 529                        return val & 0xffff;
 530        }
 531        snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 532                   secondary, snd_via82xx_codec_xread(chip));
 533        return -EIO;
 534}
 535 
 536static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 537{
 538        unsigned int timeout = 1000;    /* 1ms */
 539        unsigned int val, val1;
 540        unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 541                                         VIA_REG_AC97_SECONDARY_VALID;
 542        
 543        while (timeout-- > 0) {
 544                val = snd_via82xx_codec_xread(chip);
 545                val1 = val & (VIA_REG_AC97_BUSY | stat);
 546                if (val1 == stat)
 547                        return val & 0xffff;
 548                udelay(1);
 549        }
 550        return -EIO;
 551}
 552 
 553static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 554{
 555        struct via82xx *chip = ac97->private_data;
 556        int err;
 557        err = snd_via82xx_codec_ready(chip, ac97->num);
 558        /* here we need to wait fairly for long time.. */
 559        if (!nodelay)
 560                msleep(500);
 561}
 562
 563static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 564                                    unsigned short reg,
 565                                    unsigned short val)
 566{
 567        struct via82xx *chip = ac97->private_data;
 568        unsigned int xval;
 569
 570        xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 571        xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 572        xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 573        xval |= val << VIA_REG_AC97_DATA_SHIFT;
 574        snd_via82xx_codec_xwrite(chip, xval);
 575        snd_via82xx_codec_ready(chip, ac97->num);
 576}
 577
 578static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 579{
 580        struct via82xx *chip = ac97->private_data;
 581        unsigned int xval, val = 0xffff;
 582        int again = 0;
 583
 584        xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 585        xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 586        xval |= VIA_REG_AC97_READ;
 587        xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 588        while (1) {
 589                if (again++ > 3) {
 590                        snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 591                                   ac97->num, snd_via82xx_codec_xread(chip));
 592                        return 0xffff;
 593                }
 594                snd_via82xx_codec_xwrite(chip, xval);
 595                udelay (20);
 596                if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 597                        udelay(25);
 598                        val = snd_via82xx_codec_xread(chip);
 599                        break;
 600                }
 601        }
 602        return val & 0xffff;
 603}
 604
 605static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 606{
 607        outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 608             VIADEV_REG(viadev, OFFSET_CONTROL));
 609        inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 610        udelay(50);
 611        /* disable interrupts */
 612        outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 613        /* clear interrupts */
 614        outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 615        outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 616        // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 617        viadev->lastpos = 0;
 618        viadev->hwptr_done = 0;
 619}
 620
 621
 622/*
 623 *  Interrupt handler
 624 *  Used for 686 and 8233A
 625 */
 626static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 627{
 628        struct via82xx *chip = dev_id;
 629        unsigned int status;
 630        unsigned int i;
 631
 632        status = inl(VIAREG(chip, SGD_SHADOW));
 633        if (! (status & chip->intr_mask)) {
 634                if (chip->rmidi)
 635                        /* check mpu401 interrupt */
 636                        return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 637                return IRQ_NONE;
 638        }
 639
 640        /* check status for each stream */
 641        spin_lock(&chip->reg_lock);
 642        for (i = 0; i < chip->num_devs; i++) {
 643                struct viadev *viadev = &chip->devs[i];
 644                unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 645                if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 646                        continue;
 647                if (viadev->substream && viadev->running) {
 648                        /*
 649                         * Update hwptr_done based on 'period elapsed'
 650                         * interrupts. We'll use it, when the chip returns 0 
 651                         * for OFFSET_CURR_COUNT.
 652                         */
 653                        if (c_status & VIA_REG_STAT_EOL)
 654                                viadev->hwptr_done = 0;
 655                        else
 656                                viadev->hwptr_done += viadev->fragsize;
 657                        viadev->in_interrupt = c_status;
 658                        spin_unlock(&chip->reg_lock);
 659                        snd_pcm_period_elapsed(viadev->substream);
 660                        spin_lock(&chip->reg_lock);
 661                        viadev->in_interrupt = 0;
 662                }
 663                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 664        }
 665        spin_unlock(&chip->reg_lock);
 666        return IRQ_HANDLED;
 667}
 668
 669/*
 670 *  Interrupt handler
 671 */
 672static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 673{
 674        struct via82xx *chip = dev_id;
 675        unsigned int status;
 676        unsigned int i;
 677        int irqreturn = 0;
 678
 679        /* check status for each stream */
 680        spin_lock(&chip->reg_lock);
 681        status = inl(VIAREG(chip, SGD_SHADOW));
 682
 683        for (i = 0; i < chip->num_devs; i++) {
 684                struct viadev *viadev = &chip->devs[i];
 685                struct snd_pcm_substream *substream;
 686                unsigned char c_status, shadow_status;
 687
 688                shadow_status = (status >> viadev->shadow_shift) &
 689                        (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 690                         VIA_REG_STAT_FLAG);
 691                c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 692                if (!c_status)
 693                        continue;
 694
 695                substream = viadev->substream;
 696                if (substream && viadev->running) {
 697                        /*
 698                         * Update hwptr_done based on 'period elapsed'
 699                         * interrupts. We'll use it, when the chip returns 0 
 700                         * for OFFSET_CURR_COUNT.
 701                         */
 702                        if (c_status & VIA_REG_STAT_EOL)
 703                                viadev->hwptr_done = 0;
 704                        else
 705                                viadev->hwptr_done += viadev->fragsize;
 706                        viadev->in_interrupt = c_status;
 707                        if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 708                                viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 709                        spin_unlock(&chip->reg_lock);
 710
 711                        snd_pcm_period_elapsed(substream);
 712
 713                        spin_lock(&chip->reg_lock);
 714                        viadev->in_interrupt = 0;
 715                }
 716                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 717                irqreturn = 1;
 718        }
 719        spin_unlock(&chip->reg_lock);
 720        return IRQ_RETVAL(irqreturn);
 721}
 722
 723/*
 724 *  PCM callbacks
 725 */
 726
 727/*
 728 * trigger callback
 729 */
 730static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 731{
 732        struct via82xx *chip = snd_pcm_substream_chip(substream);
 733        struct viadev *viadev = substream->runtime->private_data;
 734        unsigned char val;
 735
 736        if (chip->chip_type != TYPE_VIA686)
 737                val = VIA_REG_CTRL_INT;
 738        else
 739                val = 0;
 740        switch (cmd) {
 741        case SNDRV_PCM_TRIGGER_START:
 742        case SNDRV_PCM_TRIGGER_RESUME:
 743                val |= VIA_REG_CTRL_START;
 744                viadev->running = 1;
 745                break;
 746        case SNDRV_PCM_TRIGGER_STOP:
 747        case SNDRV_PCM_TRIGGER_SUSPEND:
 748                val = VIA_REG_CTRL_TERMINATE;
 749                viadev->running = 0;
 750                break;
 751        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 752                val |= VIA_REG_CTRL_PAUSE;
 753                viadev->running = 0;
 754                break;
 755        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 756                viadev->running = 1;
 757                break;
 758        default:
 759                return -EINVAL;
 760        }
 761        outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 762        if (cmd == SNDRV_PCM_TRIGGER_STOP)
 763                snd_via82xx_channel_reset(chip, viadev);
 764        return 0;
 765}
 766
 767
 768/*
 769 * pointer callbacks
 770 */
 771
 772/*
 773 * calculate the linear position at the given sg-buffer index and the rest count
 774 */
 775
 776#define check_invalid_pos(viadev,pos) \
 777        ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 778                                     viadev->lastpos < viadev->bufsize2))
 779
 780static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 781                                           unsigned int count)
 782{
 783        unsigned int size, base, res;
 784
 785        size = viadev->idx_table[idx].size;
 786        base = viadev->idx_table[idx].offset;
 787        res = base + size - count;
 788        if (res >= viadev->bufsize)
 789                res -= viadev->bufsize;
 790
 791        /* check the validity of the calculated position */
 792        if (size < count) {
 793                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 794                           (int)size, (int)count);
 795                res = viadev->lastpos;
 796        } else {
 797                if (! count) {
 798                        /* Some mobos report count = 0 on the DMA boundary,
 799                         * i.e. count = size indeed.
 800                         * Let's check whether this step is above the expected size.
 801                         */
 802                        int delta = res - viadev->lastpos;
 803                        if (delta < 0)
 804                                delta += viadev->bufsize;
 805                        if ((unsigned int)delta > viadev->fragsize)
 806                                res = base;
 807                }
 808                if (check_invalid_pos(viadev, res)) {
 809#ifdef POINTER_DEBUG
 810                        printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 811                               "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 812                               "count = 0x%x\n", idx, viadev->tbl_entries,
 813                               viadev->lastpos, viadev->bufsize2,
 814                               viadev->idx_table[idx].offset,
 815                               viadev->idx_table[idx].size, count);
 816#endif
 817                        /* count register returns full size when end of buffer is reached */
 818                        res = base + size;
 819                        if (check_invalid_pos(viadev, res)) {
 820                                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 821                                           "using last valid pointer\n");
 822                                res = viadev->lastpos;
 823                        }
 824                }
 825        }
 826        return res;
 827}
 828
 829/*
 830 * get the current pointer on via686
 831 */
 832static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 833{
 834        struct via82xx *chip = snd_pcm_substream_chip(substream);
 835        struct viadev *viadev = substream->runtime->private_data;
 836        unsigned int idx, ptr, count, res;
 837
 838        if (snd_BUG_ON(!viadev->tbl_entries))
 839                return 0;
 840        if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 841                return 0;
 842
 843        spin_lock(&chip->reg_lock);
 844        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 845        /* The via686a does not have the current index register,
 846         * so we need to calculate the index from CURR_PTR.
 847         */
 848        ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 849        if (ptr <= (unsigned int)viadev->table.addr)
 850                idx = 0;
 851        else /* CURR_PTR holds the address + 8 */
 852                idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 853        res = calc_linear_pos(viadev, idx, count);
 854        viadev->lastpos = res; /* remember the last position */
 855        spin_unlock(&chip->reg_lock);
 856
 857        return bytes_to_frames(substream->runtime, res);
 858}
 859
 860/*
 861 * get the current pointer on via823x
 862 */
 863static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 864{
 865        struct via82xx *chip = snd_pcm_substream_chip(substream);
 866        struct viadev *viadev = substream->runtime->private_data;
 867        unsigned int idx, count, res;
 868        int status;
 869        
 870        if (snd_BUG_ON(!viadev->tbl_entries))
 871                return 0;
 872
 873        spin_lock(&chip->reg_lock);
 874        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 875        status = viadev->in_interrupt;
 876        if (!status)
 877                status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 878
 879        /* An apparent bug in the 8251 is worked around by sending a 
 880         * REG_CTRL_START. */
 881        if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 882                snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 883
 884        if (!(status & VIA_REG_STAT_ACTIVE)) {
 885                res = 0;
 886                goto unlock;
 887        }
 888        if (count & 0xffffff) {
 889                idx = count >> 24;
 890                if (idx >= viadev->tbl_entries) {
 891#ifdef POINTER_DEBUG
 892                        printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 893                               viadev->tbl_entries);
 894#endif
 895                        res = viadev->lastpos;
 896                } else {
 897                        count &= 0xffffff;
 898                        res = calc_linear_pos(viadev, idx, count);
 899                }
 900        } else {
 901                res = viadev->hwptr_done;
 902                if (!viadev->in_interrupt) {
 903                        if (status & VIA_REG_STAT_EOL) {
 904                                res = 0;
 905                        } else
 906                                if (status & VIA_REG_STAT_FLAG) {
 907                                        res += viadev->fragsize;
 908                                }
 909                }
 910        }                           
 911unlock:
 912        viadev->lastpos = res;
 913        spin_unlock(&chip->reg_lock);
 914
 915        return bytes_to_frames(substream->runtime, res);
 916}
 917
 918
 919/*
 920 * hw_params callback:
 921 * allocate the buffer and build up the buffer description table
 922 */
 923static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 924                                 struct snd_pcm_hw_params *hw_params)
 925{
 926        struct via82xx *chip = snd_pcm_substream_chip(substream);
 927        struct viadev *viadev = substream->runtime->private_data;
 928        int err;
 929
 930        err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 931        if (err < 0)
 932                return err;
 933        err = build_via_table(viadev, substream, chip->pci,
 934                              params_periods(hw_params),
 935                              params_period_bytes(hw_params));
 936        if (err < 0)
 937                return err;
 938
 939        return 0;
 940}
 941
 942/*
 943 * hw_free callback:
 944 * clean up the buffer description table and release the buffer
 945 */
 946static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 947{
 948        struct via82xx *chip = snd_pcm_substream_chip(substream);
 949        struct viadev *viadev = substream->runtime->private_data;
 950
 951        clean_via_table(viadev, substream, chip->pci);
 952        snd_pcm_lib_free_pages(substream);
 953        return 0;
 954}
 955
 956
 957/*
 958 * set up the table pointer
 959 */
 960static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 961{
 962        snd_via82xx_codec_ready(chip, 0);
 963        outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 964        udelay(20);
 965        snd_via82xx_codec_ready(chip, 0);
 966}
 967
 968/*
 969 * prepare callback for playback and capture on via686
 970 */
 971static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 972                                struct snd_pcm_runtime *runtime)
 973{
 974        snd_via82xx_channel_reset(chip, viadev);
 975        /* this must be set after channel_reset */
 976        snd_via82xx_set_table_ptr(chip, viadev);
 977        outb(VIA_REG_TYPE_AUTOSTART |
 978             (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 979             (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 980             ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 981             VIA_REG_TYPE_INT_EOL |
 982             VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 983}
 984
 985static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 986{
 987        struct via82xx *chip = snd_pcm_substream_chip(substream);
 988        struct viadev *viadev = substream->runtime->private_data;
 989        struct snd_pcm_runtime *runtime = substream->runtime;
 990
 991        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 992        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 993        via686_setup_format(chip, viadev, runtime);
 994        return 0;
 995}
 996
 997static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 998{
 999        struct via82xx *chip = snd_pcm_substream_chip(substream);
1000        struct viadev *viadev = substream->runtime->private_data;
1001        struct snd_pcm_runtime *runtime = substream->runtime;
1002
1003        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1004        via686_setup_format(chip, viadev, runtime);
1005        return 0;
1006}
1007
1008/*
1009 * lock the current rate
1010 */
1011static int via_lock_rate(struct via_rate_lock *rec, int rate)
1012{
1013        int changed = 0;
1014
1015        spin_lock_irq(&rec->lock);
1016        if (rec->rate != rate) {
1017                if (rec->rate && rec->used > 1) /* already set */
1018                        changed = -EINVAL;
1019                else {
1020                        rec->rate = rate;
1021                        changed = 1;
1022                }
1023        }
1024        spin_unlock_irq(&rec->lock);
1025        return changed;
1026}
1027
1028/*
1029 * prepare callback for DSX playback on via823x
1030 */
1031static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1032{
1033        struct via82xx *chip = snd_pcm_substream_chip(substream);
1034        struct viadev *viadev = substream->runtime->private_data;
1035        struct snd_pcm_runtime *runtime = substream->runtime;
1036        int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1037        int rate_changed;
1038        u32 rbits;
1039
1040        if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1041                return rate_changed;
1042        if (rate_changed)
1043                snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1044                                  chip->no_vra ? 48000 : runtime->rate);
1045        if (chip->spdif_on && viadev->reg_offset == 0x30)
1046                snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1047
1048        if (runtime->rate == 48000)
1049                rbits = 0xfffff;
1050        else
1051                rbits = (0x100000 / 48000) * runtime->rate +
1052                        ((0x100000 % 48000) * runtime->rate) / 48000;
1053        snd_BUG_ON(rbits & ~0xfffff);
1054        snd_via82xx_channel_reset(chip, viadev);
1055        snd_via82xx_set_table_ptr(chip, viadev);
1056        outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1057             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1058        outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1059             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1060        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1061             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1062             rbits | /* rate */
1063             0xff000000,    /* STOP index is never reached */
1064             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1065        udelay(20);
1066        snd_via82xx_codec_ready(chip, 0);
1067        return 0;
1068}
1069
1070/*
1071 * prepare callback for multi-channel playback on via823x
1072 */
1073static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1074{
1075        struct via82xx *chip = snd_pcm_substream_chip(substream);
1076        struct viadev *viadev = substream->runtime->private_data;
1077        struct snd_pcm_runtime *runtime = substream->runtime;
1078        unsigned int slots;
1079        int fmt;
1080
1081        if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1082                return -EINVAL;
1083        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1084        snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1085        snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1086        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1087        snd_via82xx_channel_reset(chip, viadev);
1088        snd_via82xx_set_table_ptr(chip, viadev);
1089
1090        fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1091                VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1092        fmt |= runtime->channels << 4;
1093        outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1094#if 0
1095        if (chip->revision == VIA_REV_8233A)
1096                slots = 0;
1097        else
1098#endif
1099        {
1100                /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1101                /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1102                switch (runtime->channels) {
1103                case 1: slots = (1<<0) | (1<<4); break;
1104                case 2: slots = (1<<0) | (2<<4); break;
1105                case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1106                case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1107                case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1108                case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1109                default: slots = 0; break;
1110                }
1111        }
1112        /* STOP index is never reached */
1113        outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1114        udelay(20);
1115        snd_via82xx_codec_ready(chip, 0);
1116        return 0;
1117}
1118
1119/*
1120 * prepare callback for capture on via823x
1121 */
1122static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1123{
1124        struct via82xx *chip = snd_pcm_substream_chip(substream);
1125        struct viadev *viadev = substream->runtime->private_data;
1126        struct snd_pcm_runtime *runtime = substream->runtime;
1127
1128        if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1129                return -EINVAL;
1130        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1131        snd_via82xx_channel_reset(chip, viadev);
1132        snd_via82xx_set_table_ptr(chip, viadev);
1133        outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1134        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1135             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1136             0xff000000,    /* STOP index is never reached */
1137             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1138        udelay(20);
1139        snd_via82xx_codec_ready(chip, 0);
1140        return 0;
1141}
1142
1143
1144/*
1145 * pcm hardware definition, identical for both playback and capture
1146 */
1147static struct snd_pcm_hardware snd_via82xx_hw =
1148{
1149        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1150                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1151                                 SNDRV_PCM_INFO_MMAP_VALID |
1152                                 /* SNDRV_PCM_INFO_RESUME | */
1153                                 SNDRV_PCM_INFO_PAUSE),
1154        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1155        .rates =                SNDRV_PCM_RATE_48000,
1156        .rate_min =             48000,
1157        .rate_max =             48000,
1158        .channels_min =         1,
1159        .channels_max =         2,
1160        .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1161        .period_bytes_min =     32,
1162        .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1163        .periods_min =          2,
1164        .periods_max =          VIA_TABLE_SIZE / 2,
1165        .fifo_size =            0,
1166};
1167
1168
1169/*
1170 * open callback skeleton
1171 */
1172static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1173                                struct snd_pcm_substream *substream)
1174{
1175        struct snd_pcm_runtime *runtime = substream->runtime;
1176        int err;
1177        struct via_rate_lock *ratep;
1178        bool use_src = false;
1179
1180        runtime->hw = snd_via82xx_hw;
1181        
1182        /* set the hw rate condition */
1183        ratep = &chip->rates[viadev->direction];
1184        spin_lock_irq(&ratep->lock);
1185        ratep->used++;
1186        if (chip->spdif_on && viadev->reg_offset == 0x30) {
1187                /* DXS#3 and spdif is on */
1188                runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1189                snd_pcm_limit_hw_rates(runtime);
1190        } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1191                /* fixed DXS playback rate */
1192                runtime->hw.rates = SNDRV_PCM_RATE_48000;
1193                runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1194        } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1195                /* use full SRC capabilities of DXS */
1196                runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1197                                     SNDRV_PCM_RATE_8000_48000);
1198                runtime->hw.rate_min = 8000;
1199                runtime->hw.rate_max = 48000;
1200                use_src = true;
1201        } else if (! ratep->rate) {
1202                int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1203                runtime->hw.rates = chip->ac97->rates[idx];
1204                snd_pcm_limit_hw_rates(runtime);
1205        } else {
1206                /* a fixed rate */
1207                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1208                runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1209        }
1210        spin_unlock_irq(&ratep->lock);
1211
1212        /* we may remove following constaint when we modify table entries
1213           in interrupt */
1214        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1215                return err;
1216
1217        if (use_src) {
1218                err = snd_pcm_hw_rule_noresample(runtime, 48000);
1219                if (err < 0)
1220                        return err;
1221        }
1222
1223        runtime->private_data = viadev;
1224        viadev->substream = substream;
1225
1226        return 0;
1227}
1228
1229
1230/*
1231 * open callback for playback on via686
1232 */
1233static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1234{
1235        struct via82xx *chip = snd_pcm_substream_chip(substream);
1236        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1237        int err;
1238
1239        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1240                return err;
1241        return 0;
1242}
1243
1244/*
1245 * open callback for playback on via823x DXS
1246 */
1247static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1248{
1249        struct via82xx *chip = snd_pcm_substream_chip(substream);
1250        struct viadev *viadev;
1251        unsigned int stream;
1252        int err;
1253
1254        viadev = &chip->devs[chip->playback_devno + substream->number];
1255        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1256                return err;
1257        stream = viadev->reg_offset / 0x10;
1258        if (chip->dxs_controls[stream]) {
1259                chip->playback_volume[stream][0] =
1260                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1261                chip->playback_volume[stream][1] =
1262                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1263                chip->dxs_controls[stream]->vd[0].access &=
1264                        ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1265                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1266                               SNDRV_CTL_EVENT_MASK_INFO,
1267                               &chip->dxs_controls[stream]->id);
1268        }
1269        return 0;
1270}
1271
1272/*
1273 * open callback for playback on via823x multi-channel
1274 */
1275static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1276{
1277        struct via82xx *chip = snd_pcm_substream_chip(substream);
1278        struct viadev *viadev = &chip->devs[chip->multi_devno];
1279        int err;
1280        /* channels constraint for VIA8233A
1281         * 3 and 5 channels are not supported
1282         */
1283        static unsigned int channels[] = {
1284                1, 2, 4, 6
1285        };
1286        static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1287                .count = ARRAY_SIZE(channels),
1288                .list = channels,
1289                .mask = 0,
1290        };
1291
1292        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1293                return err;
1294        substream->runtime->hw.channels_max = 6;
1295        if (chip->revision == VIA_REV_8233A)
1296                snd_pcm_hw_constraint_list(substream->runtime, 0,
1297                                           SNDRV_PCM_HW_PARAM_CHANNELS,
1298                                           &hw_constraints_channels);
1299        return 0;
1300}
1301
1302/*
1303 * open callback for capture on via686 and via823x
1304 */
1305static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1306{
1307        struct via82xx *chip = snd_pcm_substream_chip(substream);
1308        struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1309
1310        return snd_via82xx_pcm_open(chip, viadev, substream);
1311}
1312
1313/*
1314 * close callback
1315 */
1316static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1317{
1318        struct via82xx *chip = snd_pcm_substream_chip(substream);
1319        struct viadev *viadev = substream->runtime->private_data;
1320        struct via_rate_lock *ratep;
1321
1322        /* release the rate lock */
1323        ratep = &chip->rates[viadev->direction];
1324        spin_lock_irq(&ratep->lock);
1325        ratep->used--;
1326        if (! ratep->used)
1327                ratep->rate = 0;
1328        spin_unlock_irq(&ratep->lock);
1329        if (! ratep->rate) {
1330                if (! viadev->direction) {
1331                        snd_ac97_update_power(chip->ac97,
1332                                              AC97_PCM_FRONT_DAC_RATE, 0);
1333                        snd_ac97_update_power(chip->ac97,
1334                                              AC97_PCM_SURR_DAC_RATE, 0);
1335                        snd_ac97_update_power(chip->ac97,
1336                                              AC97_PCM_LFE_DAC_RATE, 0);
1337                } else
1338                        snd_ac97_update_power(chip->ac97,
1339                                              AC97_PCM_LR_ADC_RATE, 0);
1340        }
1341        viadev->substream = NULL;
1342        return 0;
1343}
1344
1345static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1346{
1347        struct via82xx *chip = snd_pcm_substream_chip(substream);
1348        struct viadev *viadev = substream->runtime->private_data;
1349        unsigned int stream;
1350
1351        stream = viadev->reg_offset / 0x10;
1352        if (chip->dxs_controls[stream]) {
1353                chip->dxs_controls[stream]->vd[0].access |=
1354                        SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1355                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1356                               &chip->dxs_controls[stream]->id);
1357        }
1358        return snd_via82xx_pcm_close(substream);
1359}
1360
1361
1362/* via686 playback callbacks */
1363static struct snd_pcm_ops snd_via686_playback_ops = {
1364        .open =         snd_via686_playback_open,
1365        .close =        snd_via82xx_pcm_close,
1366        .ioctl =        snd_pcm_lib_ioctl,
1367        .hw_params =    snd_via82xx_hw_params,
1368        .hw_free =      snd_via82xx_hw_free,
1369        .prepare =      snd_via686_playback_prepare,
1370        .trigger =      snd_via82xx_pcm_trigger,
1371        .pointer =      snd_via686_pcm_pointer,
1372        .page =         snd_pcm_sgbuf_ops_page,
1373};
1374
1375/* via686 capture callbacks */
1376static struct snd_pcm_ops snd_via686_capture_ops = {
1377        .open =         snd_via82xx_capture_open,
1378        .close =        snd_via82xx_pcm_close,
1379        .ioctl =        snd_pcm_lib_ioctl,
1380        .hw_params =    snd_via82xx_hw_params,
1381        .hw_free =      snd_via82xx_hw_free,
1382        .prepare =      snd_via686_capture_prepare,
1383        .trigger =      snd_via82xx_pcm_trigger,
1384        .pointer =      snd_via686_pcm_pointer,
1385        .page =         snd_pcm_sgbuf_ops_page,
1386};
1387
1388/* via823x DSX playback callbacks */
1389static struct snd_pcm_ops snd_via8233_playback_ops = {
1390        .open =         snd_via8233_playback_open,
1391        .close =        snd_via8233_playback_close,
1392        .ioctl =        snd_pcm_lib_ioctl,
1393        .hw_params =    snd_via82xx_hw_params,
1394        .hw_free =      snd_via82xx_hw_free,
1395        .prepare =      snd_via8233_playback_prepare,
1396        .trigger =      snd_via82xx_pcm_trigger,
1397        .pointer =      snd_via8233_pcm_pointer,
1398        .page =         snd_pcm_sgbuf_ops_page,
1399};
1400
1401/* via823x multi-channel playback callbacks */
1402static struct snd_pcm_ops snd_via8233_multi_ops = {
1403        .open =         snd_via8233_multi_open,
1404        .close =        snd_via82xx_pcm_close,
1405        .ioctl =        snd_pcm_lib_ioctl,
1406        .hw_params =    snd_via82xx_hw_params,
1407        .hw_free =      snd_via82xx_hw_free,
1408        .prepare =      snd_via8233_multi_prepare,
1409        .trigger =      snd_via82xx_pcm_trigger,
1410        .pointer =      snd_via8233_pcm_pointer,
1411        .page =         snd_pcm_sgbuf_ops_page,
1412};
1413
1414/* via823x capture callbacks */
1415static struct snd_pcm_ops snd_via8233_capture_ops = {
1416        .open =         snd_via82xx_capture_open,
1417        .close =        snd_via82xx_pcm_close,
1418        .ioctl =        snd_pcm_lib_ioctl,
1419        .hw_params =    snd_via82xx_hw_params,
1420        .hw_free =      snd_via82xx_hw_free,
1421        .prepare =      snd_via8233_capture_prepare,
1422        .trigger =      snd_via82xx_pcm_trigger,
1423        .pointer =      snd_via8233_pcm_pointer,
1424        .page =         snd_pcm_sgbuf_ops_page,
1425};
1426
1427
1428static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1429                        int shadow_pos, int direction)
1430{
1431        chip->devs[idx].reg_offset = reg_offset;
1432        chip->devs[idx].shadow_shift = shadow_pos * 4;
1433        chip->devs[idx].direction = direction;
1434        chip->devs[idx].port = chip->port + reg_offset;
1435}
1436
1437/*
1438 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1439 */
1440static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1441{
1442        struct snd_pcm *pcm;
1443        struct snd_pcm_chmap *chmap;
1444        int i, err;
1445
1446        chip->playback_devno = 0;       /* x 4 */
1447        chip->multi_devno = 4;          /* x 1 */
1448        chip->capture_devno = 5;        /* x 2 */
1449        chip->num_devs = 7;
1450        chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1451
1452        /* PCM #0:  4 DSX playbacks and 1 capture */
1453        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1454        if (err < 0)
1455                return err;
1456        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1457        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1458        pcm->private_data = chip;
1459        strcpy(pcm->name, chip->card->shortname);
1460        chip->pcms[0] = pcm;
1461        /* set up playbacks */
1462        for (i = 0; i < 4; i++)
1463                init_viadev(chip, i, 0x10 * i, i, 0);
1464        /* capture */
1465        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1466
1467        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1468                                              snd_dma_pci_data(chip->pci),
1469                                              64*1024, VIA_MAX_BUFSIZE);
1470
1471        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1472                                     snd_pcm_std_chmaps, 2, 0,
1473                                     &chmap);
1474        if (err < 0)
1475                return err;
1476
1477        /* PCM #1:  multi-channel playback and 2nd capture */
1478        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1479        if (err < 0)
1480                return err;
1481        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1482        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1483        pcm->private_data = chip;
1484        strcpy(pcm->name, chip->card->shortname);
1485        chip->pcms[1] = pcm;
1486        /* set up playback */
1487        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1488        /* set up capture */
1489        init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1490
1491        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1492                                              snd_dma_pci_data(chip->pci),
1493                                              64*1024, VIA_MAX_BUFSIZE);
1494
1495        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1496                                     snd_pcm_alt_chmaps, 6, 0,
1497                                     &chmap);
1498        if (err < 0)
1499                return err;
1500        chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1501
1502        return 0;
1503}
1504
1505/*
1506 * create pcm instances for VIA8233A
1507 */
1508static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1509{
1510        struct snd_pcm *pcm;
1511        struct snd_pcm_chmap *chmap;
1512        int err;
1513
1514        chip->multi_devno = 0;
1515        chip->playback_devno = 1;
1516        chip->capture_devno = 2;
1517        chip->num_devs = 3;
1518        chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1519
1520        /* PCM #0:  multi-channel playback and capture */
1521        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1522        if (err < 0)
1523                return err;
1524        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1525        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1526        pcm->private_data = chip;
1527        strcpy(pcm->name, chip->card->shortname);
1528        chip->pcms[0] = pcm;
1529        /* set up playback */
1530        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1531        /* capture */
1532        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1533
1534        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1535                                              snd_dma_pci_data(chip->pci),
1536                                              64*1024, VIA_MAX_BUFSIZE);
1537
1538        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1539                                     snd_pcm_alt_chmaps, 6, 0,
1540                                     &chmap);
1541        if (err < 0)
1542                return err;
1543        chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1544
1545        /* SPDIF supported? */
1546        if (! ac97_can_spdif(chip->ac97))
1547                return 0;
1548
1549        /* PCM #1:  DXS3 playback (for spdif) */
1550        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1551        if (err < 0)
1552                return err;
1553        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1554        pcm->private_data = chip;
1555        strcpy(pcm->name, chip->card->shortname);
1556        chip->pcms[1] = pcm;
1557        /* set up playback */
1558        init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1559
1560        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1561                                              snd_dma_pci_data(chip->pci),
1562                                              64*1024, VIA_MAX_BUFSIZE);
1563        return 0;
1564}
1565
1566/*
1567 * create a pcm instance for via686a/b
1568 */
1569static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1570{
1571        struct snd_pcm *pcm;
1572        int err;
1573
1574        chip->playback_devno = 0;
1575        chip->capture_devno = 1;
1576        chip->num_devs = 2;
1577        chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1578
1579        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1580        if (err < 0)
1581                return err;
1582        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1583        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1584        pcm->private_data = chip;
1585        strcpy(pcm->name, chip->card->shortname);
1586        chip->pcms[0] = pcm;
1587        init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1588        init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1589
1590        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1591                                              snd_dma_pci_data(chip->pci),
1592                                              64*1024, VIA_MAX_BUFSIZE);
1593        return 0;
1594}
1595
1596
1597/*
1598 *  Mixer part
1599 */
1600
1601static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1602                                           struct snd_ctl_elem_info *uinfo)
1603{
1604        /* formerly they were "Line" and "Mic", but it looks like that they
1605         * have nothing to do with the actual physical connections...
1606         */
1607        static char *texts[2] = {
1608                "Input1", "Input2"
1609        };
1610        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1611        uinfo->count = 1;
1612        uinfo->value.enumerated.items = 2;
1613        if (uinfo->value.enumerated.item >= 2)
1614                uinfo->value.enumerated.item = 1;
1615        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1616        return 0;
1617}
1618
1619static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1620                                          struct snd_ctl_elem_value *ucontrol)
1621{
1622        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1623        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1624        ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1625        return 0;
1626}
1627
1628static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1629                                          struct snd_ctl_elem_value *ucontrol)
1630{
1631        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1632        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1633        u8 val, oval;
1634
1635        spin_lock_irq(&chip->reg_lock);
1636        oval = inb(port);
1637        val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1638        if (ucontrol->value.enumerated.item[0])
1639                val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1640        if (val != oval)
1641                outb(val, port);
1642        spin_unlock_irq(&chip->reg_lock);
1643        return val != oval;
1644}
1645
1646static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1647        .name = "Input Source Select",
1648        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1649        .info = snd_via8233_capture_source_info,
1650        .get = snd_via8233_capture_source_get,
1651        .put = snd_via8233_capture_source_put,
1652};
1653
1654#define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1655
1656static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1657                                      struct snd_ctl_elem_value *ucontrol)
1658{
1659        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1660        u8 val;
1661
1662        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1663        ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1664        return 0;
1665}
1666
1667static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1668                                      struct snd_ctl_elem_value *ucontrol)
1669{
1670        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1671        u8 val, oval;
1672
1673        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1674        val = oval & ~VIA8233_SPDIF_DX3;
1675        if (ucontrol->value.integer.value[0])
1676                val |= VIA8233_SPDIF_DX3;
1677        /* save the spdif flag for rate filtering */
1678        chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1679        if (val != oval) {
1680                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1681                return 1;
1682        }
1683        return 0;
1684}
1685
1686static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1687        .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1688        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1689        .info = snd_via8233_dxs3_spdif_info,
1690        .get = snd_via8233_dxs3_spdif_get,
1691        .put = snd_via8233_dxs3_spdif_put,
1692};
1693
1694static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1695                                       struct snd_ctl_elem_info *uinfo)
1696{
1697        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1698        uinfo->count = 2;
1699        uinfo->value.integer.min = 0;
1700        uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1701        return 0;
1702}
1703
1704static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1705                                      struct snd_ctl_elem_value *ucontrol)
1706{
1707        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1708        unsigned int idx = kcontrol->id.subdevice;
1709
1710        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1711        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1712        return 0;
1713}
1714
1715static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1716                                         struct snd_ctl_elem_value *ucontrol)
1717{
1718        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1719        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1720        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1721        return 0;
1722}
1723
1724static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1725                                      struct snd_ctl_elem_value *ucontrol)
1726{
1727        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1728        unsigned int idx = kcontrol->id.subdevice;
1729        unsigned long port = chip->port + 0x10 * idx;
1730        unsigned char val;
1731        int i, change = 0;
1732
1733        for (i = 0; i < 2; i++) {
1734                val = ucontrol->value.integer.value[i];
1735                if (val > VIA_DXS_MAX_VOLUME)
1736                        val = VIA_DXS_MAX_VOLUME;
1737                val = VIA_DXS_MAX_VOLUME - val;
1738                change |= val != chip->playback_volume[idx][i];
1739                if (change) {
1740                        chip->playback_volume[idx][i] = val;
1741                        outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1742                }
1743        }
1744        return change;
1745}
1746
1747static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1748                                         struct snd_ctl_elem_value *ucontrol)
1749{
1750        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1751        unsigned int idx;
1752        unsigned char val;
1753        int i, change = 0;
1754
1755        for (i = 0; i < 2; i++) {
1756                val = ucontrol->value.integer.value[i];
1757                if (val > VIA_DXS_MAX_VOLUME)
1758                        val = VIA_DXS_MAX_VOLUME;
1759                val = VIA_DXS_MAX_VOLUME - val;
1760                if (val != chip->playback_volume_c[i]) {
1761                        change = 1;
1762                        chip->playback_volume_c[i] = val;
1763                        for (idx = 0; idx < 4; idx++) {
1764                                unsigned long port = chip->port + 0x10 * idx;
1765                                chip->playback_volume[idx][i] = val;
1766                                outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1767                        }
1768                }
1769        }
1770        return change;
1771}
1772
1773static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1774
1775static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1776        .name = "PCM Playback Volume",
1777        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1778        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1779                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1780        .info = snd_via8233_dxs_volume_info,
1781        .get = snd_via8233_pcmdxs_volume_get,
1782        .put = snd_via8233_pcmdxs_volume_put,
1783        .tlv = { .p = db_scale_dxs }
1784};
1785
1786static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1787        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1788        .device = 0,
1789        /* .subdevice set later */
1790        .name = "PCM Playback Volume",
1791        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1792                  SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1793                  SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1794        .info = snd_via8233_dxs_volume_info,
1795        .get = snd_via8233_dxs_volume_get,
1796        .put = snd_via8233_dxs_volume_put,
1797        .tlv = { .p = db_scale_dxs }
1798};
1799
1800/*
1801 */
1802
1803static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1804{
1805        struct via82xx *chip = bus->private_data;
1806        chip->ac97_bus = NULL;
1807}
1808
1809static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1810{
1811        struct via82xx *chip = ac97->private_data;
1812        chip->ac97 = NULL;
1813}
1814
1815static struct ac97_quirk ac97_quirks[] = {
1816        {
1817                .subvendor = 0x1106,
1818                .subdevice = 0x4161,
1819                .codec_id = 0x56494161, /* VT1612A */
1820                .name = "Soltek SL-75DRV5",
1821                .type = AC97_TUNE_NONE
1822        },
1823        {       /* FIXME: which codec? */
1824                .subvendor = 0x1106,
1825                .subdevice = 0x4161,
1826                .name = "ASRock K7VT2",
1827                .type = AC97_TUNE_HP_ONLY
1828        },
1829        {
1830                .subvendor = 0x110a,
1831                .subdevice = 0x0079,
1832                .name = "Fujitsu Siemens D1289",
1833                .type = AC97_TUNE_HP_ONLY
1834        },
1835        {
1836                .subvendor = 0x1019,
1837                .subdevice = 0x0a81,
1838                .name = "ECS K7VTA3",
1839                .type = AC97_TUNE_HP_ONLY
1840        },
1841        {
1842                .subvendor = 0x1019,
1843                .subdevice = 0x0a85,
1844                .name = "ECS L7VMM2",
1845                .type = AC97_TUNE_HP_ONLY
1846        },
1847        {
1848                .subvendor = 0x1019,
1849                .subdevice = 0x1841,
1850                .name = "ECS K7VTA3",
1851                .type = AC97_TUNE_HP_ONLY
1852        },
1853        {
1854                .subvendor = 0x1849,
1855                .subdevice = 0x3059,
1856                .name = "ASRock K7VM2",
1857                .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1858        },
1859        {
1860                .subvendor = 0x14cd,
1861                .subdevice = 0x7002,
1862                .name = "Unknown",
1863                .type = AC97_TUNE_ALC_JACK
1864        },
1865        {
1866                .subvendor = 0x1071,
1867                .subdevice = 0x8590,
1868                .name = "Mitac Mobo",
1869                .type = AC97_TUNE_ALC_JACK
1870        },
1871        {
1872                .subvendor = 0x161f,
1873                .subdevice = 0x202b,
1874                .name = "Arima Notebook",
1875                .type = AC97_TUNE_HP_ONLY,
1876        },
1877        {
1878                .subvendor = 0x161f,
1879                .subdevice = 0x2032,
1880                .name = "Targa Traveller 811",
1881                .type = AC97_TUNE_HP_ONLY,
1882        },
1883        {
1884                .subvendor = 0x161f,
1885                .subdevice = 0x2032,
1886                .name = "m680x",
1887                .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1888        },
1889        {
1890                .subvendor = 0x1297,
1891                .subdevice = 0xa232,
1892                .name = "Shuttle AK32VN",
1893                .type = AC97_TUNE_HP_ONLY
1894        },
1895        { } /* terminator */
1896};
1897
1898static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1899{
1900        struct snd_ac97_template ac97;
1901        int err;
1902        static struct snd_ac97_bus_ops ops = {
1903                .write = snd_via82xx_codec_write,
1904                .read = snd_via82xx_codec_read,
1905                .wait = snd_via82xx_codec_wait,
1906        };
1907
1908        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1909                return err;
1910        chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1911        chip->ac97_bus->clock = chip->ac97_clock;
1912
1913        memset(&ac97, 0, sizeof(ac97));
1914        ac97.private_data = chip;
1915        ac97.private_free = snd_via82xx_mixer_free_ac97;
1916        ac97.pci = chip->pci;
1917        ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1918        if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1919                return err;
1920
1921        snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1922
1923        if (chip->chip_type != TYPE_VIA686) {
1924                /* use slot 10/11 */
1925                snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1926        }
1927
1928        return 0;
1929}
1930
1931#ifdef SUPPORT_JOYSTICK
1932#define JOYSTICK_ADDR   0x200
1933static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1934{
1935        struct gameport *gp;
1936        struct resource *r;
1937
1938        if (!joystick)
1939                return -ENODEV;
1940
1941        r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1942        if (!r) {
1943                printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1944                       JOYSTICK_ADDR);
1945                return -EBUSY;
1946        }
1947
1948        chip->gameport = gp = gameport_allocate_port();
1949        if (!gp) {
1950                printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1951                release_and_free_resource(r);
1952                return -ENOMEM;
1953        }
1954
1955        gameport_set_name(gp, "VIA686 Gameport");
1956        gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1957        gameport_set_dev_parent(gp, &chip->pci->dev);
1958        gp->io = JOYSTICK_ADDR;
1959        gameport_set_port_data(gp, r);
1960
1961        /* Enable legacy joystick port */
1962        *legacy |= VIA_FUNC_ENABLE_GAME;
1963        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1964
1965        gameport_register_port(chip->gameport);
1966
1967        return 0;
1968}
1969
1970static void snd_via686_free_gameport(struct via82xx *chip)
1971{
1972        if (chip->gameport) {
1973                struct resource *r = gameport_get_port_data(chip->gameport);
1974
1975                gameport_unregister_port(chip->gameport);
1976                chip->gameport = NULL;
1977                release_and_free_resource(r);
1978        }
1979}
1980#else
1981static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1982{
1983        return -ENOSYS;
1984}
1985static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1986#endif
1987
1988
1989/*
1990 *
1991 */
1992
1993static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1994{
1995        int i, err, caps;
1996        unsigned char val;
1997
1998        caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1999        for (i = 0; i < caps; i++) {
2000                snd_via8233_capture_source.index = i;
2001                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
2002                if (err < 0)
2003                        return err;
2004        }
2005        if (ac97_can_spdif(chip->ac97)) {
2006                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
2007                if (err < 0)
2008                        return err;
2009        }
2010        if (chip->chip_type != TYPE_VIA8233A) {
2011                /* when no h/w PCM volume control is found, use DXS volume control
2012                 * as the PCM vol control
2013                 */
2014                struct snd_ctl_elem_id sid;
2015                memset(&sid, 0, sizeof(sid));
2016                strcpy(sid.name, "PCM Playback Volume");
2017                sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
2018                if (! snd_ctl_find_id(chip->card, &sid)) {
2019                        snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
2020                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
2021                        if (err < 0)
2022                                return err;
2023                }
2024                else /* Using DXS when PCM emulation is enabled is really weird */
2025                {
2026                        for (i = 0; i < 4; ++i) {
2027                                struct snd_kcontrol *kctl;
2028
2029                                kctl = snd_ctl_new1(
2030                                        &snd_via8233_dxs_volume_control, chip);
2031                                if (!kctl)
2032                                        return -ENOMEM;
2033                                kctl->id.subdevice = i;
2034                                err = snd_ctl_add(chip->card, kctl);
2035                                if (err < 0)
2036                                        return err;
2037                                chip->dxs_controls[i] = kctl;
2038                        }
2039                }
2040        }
2041        /* select spdif data slot 10/11 */
2042        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2043        val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2044        val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2045        pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2046
2047        return 0;
2048}
2049
2050static int __devinit snd_via686_init_misc(struct via82xx *chip)
2051{
2052        unsigned char legacy, legacy_cfg;
2053        int rev_h = 0;
2054
2055        legacy = chip->old_legacy;
2056        legacy_cfg = chip->old_legacy_cfg;
2057        legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2058        legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2059        if (chip->revision >= VIA_REV_686_H) {
2060                rev_h = 1;
2061                if (mpu_port >= 0x200) {        /* force MIDI */
2062                        mpu_port &= 0xfffc;
2063                        pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2064#ifdef CONFIG_PM_SLEEP
2065                        chip->mpu_port_saved = mpu_port;
2066#endif
2067                } else {
2068                        mpu_port = pci_resource_start(chip->pci, 2);
2069                }
2070        } else {
2071                switch (mpu_port) {     /* force MIDI */
2072                case 0x300:
2073                case 0x310:
2074                case 0x320:
2075                case 0x330:
2076                        legacy_cfg &= ~(3 << 2);
2077                        legacy_cfg |= (mpu_port & 0x0030) >> 2;
2078                        break;
2079                default:                        /* no, use BIOS settings */
2080                        if (legacy & VIA_FUNC_ENABLE_MIDI)
2081                                mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2082                        break;
2083                }
2084        }
2085        if (mpu_port >= 0x200 &&
2086            (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2087            != NULL) {
2088                if (rev_h)
2089                        legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2090                legacy |= VIA_FUNC_ENABLE_MIDI;
2091        } else {
2092                if (rev_h)
2093                        legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2094                legacy &= ~VIA_FUNC_ENABLE_MIDI;
2095                mpu_port = 0;
2096        }
2097
2098        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2099        pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2100        if (chip->mpu_res) {
2101                if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2102                                        mpu_port, MPU401_INFO_INTEGRATED |
2103                                        MPU401_INFO_IRQ_HOOK, -1,
2104                                        &chip->rmidi) < 0) {
2105                        printk(KERN_WARNING "unable to initialize MPU-401"
2106                               " at 0x%lx, skipping\n", mpu_port);
2107                        legacy &= ~VIA_FUNC_ENABLE_MIDI;
2108                } else {
2109                        legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2110                }
2111                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2112        }
2113
2114        snd_via686_create_gameport(chip, &legacy);
2115
2116#ifdef CONFIG_PM_SLEEP
2117        chip->legacy_saved = legacy;
2118        chip->legacy_cfg_saved = legacy_cfg;
2119#endif
2120
2121        return 0;
2122}
2123
2124
2125/*
2126 * proc interface
2127 */
2128static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2129                                  struct snd_info_buffer *buffer)
2130{
2131        struct via82xx *chip = entry->private_data;
2132        int i;
2133        
2134        snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2135        for (i = 0; i < 0xa0; i += 4) {
2136                snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2137        }
2138}
2139
2140static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2141{
2142        struct snd_info_entry *entry;
2143
2144        if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2145                snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2146}
2147
2148/*
2149 *
2150 */
2151
2152static int snd_via82xx_chip_init(struct via82xx *chip)
2153{
2154        unsigned int val;
2155        unsigned long end_time;
2156        unsigned char pval;
2157
2158#if 0 /* broken on K7M? */
2159        if (chip->chip_type == TYPE_VIA686)
2160                /* disable all legacy ports */
2161                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2162#endif
2163        pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2164        if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2165                /* deassert ACLink reset, force SYNC */
2166                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2167                                      VIA_ACLINK_CTRL_ENABLE |
2168                                      VIA_ACLINK_CTRL_RESET |
2169                                      VIA_ACLINK_CTRL_SYNC);
2170                udelay(100);
2171#if 1 /* FIXME: should we do full reset here for all chip models? */
2172                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2173                udelay(100);
2174#else
2175                /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2176                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2177                                      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2178                udelay(2);
2179#endif
2180                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2181                /* note - FM data out has trouble with non VRA codecs !! */
2182                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2183                udelay(100);
2184        }
2185        
2186        /* Make sure VRA is enabled, in case we didn't do a
2187         * complete codec reset, above */
2188        pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2189        if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2190                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2191                /* note - FM data out has trouble with non VRA codecs !! */
2192                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2193                udelay(100);
2194        }
2195
2196        /* wait until codec ready */
2197        end_time = jiffies + msecs_to_jiffies(750);
2198        do {
2199                pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2200                if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2201                        break;
2202                schedule_timeout_uninterruptible(1);
2203        } while (time_before(jiffies, end_time));
2204
2205        if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2206                snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2207
2208#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2209        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2210                                 VIA_REG_AC97_SECONDARY_VALID |
2211                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2212        end_time = jiffies + msecs_to_jiffies(750);
2213        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2214                                 VIA_REG_AC97_SECONDARY_VALID |
2215                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2216        do {
2217                if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2218                        chip->ac97_secondary = 1;
2219                        goto __ac97_ok2;
2220                }
2221                schedule_timeout_uninterruptible(1);
2222        } while (time_before(jiffies, end_time));
2223        /* This is ok, the most of motherboards have only one codec */
2224
2225      __ac97_ok2:
2226#endif
2227
2228        if (chip->chip_type == TYPE_VIA686) {
2229                /* route FM trap to IRQ, disable FM trap */
2230                pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2231                /* disable all GPI interrupts */
2232                outl(0, VIAREG(chip, GPI_INTR));
2233        }
2234
2235        if (chip->chip_type != TYPE_VIA686) {
2236                /* Workaround for Award BIOS bug:
2237                 * DXS channels don't work properly with VRA if MC97 is disabled.
2238                 */
2239                struct pci_dev *pci;
2240                pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2241                if (pci) {
2242                        unsigned char data;
2243                        pci_read_config_byte(pci, 0x44, &data);
2244                        pci_write_config_byte(pci, 0x44, data | 0x40);
2245                        pci_dev_put(pci);
2246                }
2247        }
2248
2249        if (chip->chip_type != TYPE_VIA8233A) {
2250                int i, idx;
2251                for (idx = 0; idx < 4; idx++) {
2252                        unsigned long port = chip->port + 0x10 * idx;
2253                        for (i = 0; i < 2; i++) {
2254                                chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2255                                outb(chip->playback_volume_c[i],
2256                                     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2257                        }
2258                }
2259        }
2260
2261        return 0;
2262}
2263
2264#ifdef CONFIG_PM_SLEEP
2265/*
2266 * power management
2267 */
2268static int snd_via82xx_suspend(struct device *dev)
2269{
2270        struct pci_dev *pci = to_pci_dev(dev);
2271        struct snd_card *card = dev_get_drvdata(dev);
2272        struct via82xx *chip = card->private_data;
2273        int i;
2274
2275        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2276        for (i = 0; i < 2; i++)
2277                snd_pcm_suspend_all(chip->pcms[i]);
2278        for (i = 0; i < chip->num_devs; i++)
2279                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2280        synchronize_irq(chip->irq);
2281        snd_ac97_suspend(chip->ac97);
2282
2283        /* save misc values */
2284        if (chip->chip_type != TYPE_VIA686) {
2285                pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2286                chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2287                chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2288        }
2289
2290        pci_disable_device(pci);
2291        pci_save_state(pci);
2292        pci_set_power_state(pci, PCI_D3hot);
2293        return 0;
2294}
2295
2296static int snd_via82xx_resume(struct device *dev)
2297{
2298        struct pci_dev *pci = to_pci_dev(dev);
2299        struct snd_card *card = dev_get_drvdata(dev);
2300        struct via82xx *chip = card->private_data;
2301        int i;
2302
2303        pci_set_power_state(pci, PCI_D0);
2304        pci_restore_state(pci);
2305        if (pci_enable_device(pci) < 0) {
2306                printk(KERN_ERR "via82xx: pci_enable_device failed, "
2307                       "disabling device\n");
2308                snd_card_disconnect(card);
2309                return -EIO;
2310        }
2311        pci_set_master(pci);
2312
2313        snd_via82xx_chip_init(chip);
2314
2315        if (chip->chip_type == TYPE_VIA686) {
2316                if (chip->mpu_port_saved)
2317                        pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2318                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2319                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2320        } else {
2321                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2322                outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2323                outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2324        }
2325
2326        snd_ac97_resume(chip->ac97);
2327
2328        for (i = 0; i < chip->num_devs; i++)
2329                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2330
2331        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2332        return 0;
2333}
2334
2335static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2336#define SND_VIA82XX_PM_OPS      &snd_via82xx_pm
2337#else
2338#define SND_VIA82XX_PM_OPS      NULL
2339#endif /* CONFIG_PM_SLEEP */
2340
2341static int snd_via82xx_free(struct via82xx *chip)
2342{
2343        unsigned int i;
2344
2345        if (chip->irq < 0)
2346                goto __end_hw;
2347        /* disable interrupts */
2348        for (i = 0; i < chip->num_devs; i++)
2349                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2350
2351        if (chip->irq >= 0)
2352                free_irq(chip->irq, chip);
2353 __end_hw:
2354        release_and_free_resource(chip->mpu_res);
2355        pci_release_regions(chip->pci);
2356
2357        if (chip->chip_type == TYPE_VIA686) {
2358                snd_via686_free_gameport(chip);
2359                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2360                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2361        }
2362        pci_disable_device(chip->pci);
2363        kfree(chip);
2364        return 0;
2365}
2366
2367static int snd_via82xx_dev_free(struct snd_device *device)
2368{
2369        struct via82xx *chip = device->device_data;
2370        return snd_via82xx_free(chip);
2371}
2372
2373static int __devinit snd_via82xx_create(struct snd_card *card,
2374                                        struct pci_dev *pci,
2375                                        int chip_type,
2376                                        int revision,
2377                                        unsigned int ac97_clock,
2378                                        struct via82xx ** r_via)
2379{
2380        struct via82xx *chip;
2381        int err;
2382        static struct snd_device_ops ops = {
2383                .dev_free =     snd_via82xx_dev_free,
2384        };
2385
2386        if ((err = pci_enable_device(pci)) < 0)
2387                return err;
2388
2389        if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2390                pci_disable_device(pci);
2391                return -ENOMEM;
2392        }
2393
2394        chip->chip_type = chip_type;
2395        chip->revision = revision;
2396
2397        spin_lock_init(&chip->reg_lock);
2398        spin_lock_init(&chip->rates[0].lock);
2399        spin_lock_init(&chip->rates[1].lock);
2400        chip->card = card;
2401        chip->pci = pci;
2402        chip->irq = -1;
2403
2404        pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2405        pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2406        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2407                              chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2408
2409        if ((err = pci_request_regions(pci, card->driver)) < 0) {
2410                kfree(chip);
2411                pci_disable_device(pci);
2412                return err;
2413        }
2414        chip->port = pci_resource_start(pci, 0);
2415        if (request_irq(pci->irq,
2416                        chip_type == TYPE_VIA8233 ?
2417                        snd_via8233_interrupt : snd_via686_interrupt,
2418                        IRQF_SHARED,
2419                        KBUILD_MODNAME, chip)) {
2420                snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2421                snd_via82xx_free(chip);
2422                return -EBUSY;
2423        }
2424        chip->irq = pci->irq;
2425        if (ac97_clock >= 8000 && ac97_clock <= 48000)
2426                chip->ac97_clock = ac97_clock;
2427        synchronize_irq(chip->irq);
2428
2429        if ((err = snd_via82xx_chip_init(chip)) < 0) {
2430                snd_via82xx_free(chip);
2431                return err;
2432        }
2433
2434        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2435                snd_via82xx_free(chip);
2436                return err;
2437        }
2438
2439        /* The 8233 ac97 controller does not implement the master bit
2440         * in the pci command register. IMHO this is a violation of the PCI spec.
2441         * We call pci_set_master here because it does not hurt. */
2442        pci_set_master(pci);
2443
2444        snd_card_set_dev(card, &pci->dev);
2445
2446        *r_via = chip;
2447        return 0;
2448}
2449
2450struct via823x_info {
2451        int revision;
2452        char *name;
2453        int type;
2454};
2455static struct via823x_info via823x_cards[] __devinitdata = {
2456        { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2457        { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2458        { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2459        { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2460        { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2461        { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2462        { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2463};
2464
2465/*
2466 * auto detection of DXS channel supports.
2467 */
2468
2469static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2470        SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2471        SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2472        SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2473        SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2474        SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2475        SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2476        SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2477        SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2478        SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2479        SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2480        SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2481        SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2482        SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2483        SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2484        SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2485        SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2486        SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2487        SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2488        SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2489        SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2490        SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2491        SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2492        SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2493        SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2494        SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2495        SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2496        SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2497        SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2498        SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2499        SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2500        SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2501        SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2502        SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2503        SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2504        SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2505        SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2506        SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2507        SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2508        SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2509        SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2510        { } /* terminator */
2511};
2512
2513static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2514{
2515        const struct snd_pci_quirk *w;
2516
2517        w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2518        if (w) {
2519                snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2520                            w->name);
2521                return w->value;
2522        }
2523
2524        /* for newer revision, default to DXS_SRC */
2525        if (revision >= VIA_REV_8235)
2526                return VIA_DXS_SRC;
2527
2528        /*
2529         * not detected, try 48k rate only to be sure.
2530         */
2531        printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2532        printk(KERN_INFO "         Please try dxs_support=5 option\n");
2533        printk(KERN_INFO "         and report if it works on your machine.\n");
2534        printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2535        return VIA_DXS_48K;
2536};
2537
2538static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2539                                       const struct pci_device_id *pci_id)
2540{
2541        struct snd_card *card;
2542        struct via82xx *chip;
2543        int chip_type = 0, card_type;
2544        unsigned int i;
2545        int err;
2546
2547        err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2548        if (err < 0)
2549                return err;
2550
2551        card_type = pci_id->driver_data;
2552        switch (card_type) {
2553        case TYPE_CARD_VIA686:
2554                strcpy(card->driver, "VIA686A");
2555                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2556                chip_type = TYPE_VIA686;
2557                break;
2558        case TYPE_CARD_VIA8233:
2559                chip_type = TYPE_VIA8233;
2560                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2561                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2562                        if (pci->revision == via823x_cards[i].revision) {
2563                                chip_type = via823x_cards[i].type;
2564                                strcpy(card->shortname, via823x_cards[i].name);
2565                                break;
2566                        }
2567                }
2568                if (chip_type != TYPE_VIA8233A) {
2569                        if (dxs_support == VIA_DXS_AUTO)
2570                                dxs_support = check_dxs_list(pci, pci->revision);
2571                        /* force to use VIA8233 or 8233A model according to
2572                         * dxs_support module option
2573                         */
2574                        if (dxs_support == VIA_DXS_DISABLE)
2575                                chip_type = TYPE_VIA8233A;
2576                        else
2577                                chip_type = TYPE_VIA8233;
2578                }
2579                if (chip_type == TYPE_VIA8233A)
2580                        strcpy(card->driver, "VIA8233A");
2581                else if (pci->revision >= VIA_REV_8237)
2582                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
2583                else
2584                        strcpy(card->driver, "VIA8233");
2585                break;
2586        default:
2587                snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2588                err = -EINVAL;
2589                goto __error;
2590        }
2591                
2592        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2593                                      ac97_clock, &chip)) < 0)
2594                goto __error;
2595        card->private_data = chip;
2596        if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2597                goto __error;
2598
2599        if (chip_type == TYPE_VIA686) {
2600                if ((err = snd_via686_pcm_new(chip)) < 0 ||
2601                    (err = snd_via686_init_misc(chip)) < 0)
2602                        goto __error;
2603        } else {
2604                if (chip_type == TYPE_VIA8233A) {
2605                        if ((err = snd_via8233a_pcm_new(chip)) < 0)
2606                                goto __error;
2607                        // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2608                } else {
2609                        if ((err = snd_via8233_pcm_new(chip)) < 0)
2610                                goto __error;
2611                        if (dxs_support == VIA_DXS_48K)
2612                                chip->dxs_fixed = 1;
2613                        else if (dxs_support == VIA_DXS_NO_VRA)
2614                                chip->no_vra = 1;
2615                        else if (dxs_support == VIA_DXS_SRC) {
2616                                chip->no_vra = 1;
2617                                chip->dxs_src = 1;
2618                        }
2619                }
2620                if ((err = snd_via8233_init_misc(chip)) < 0)
2621                        goto __error;
2622        }
2623
2624        /* disable interrupts */
2625        for (i = 0; i < chip->num_devs; i++)
2626                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2627
2628        snprintf(card->longname, sizeof(card->longname),
2629                 "%s with %s at %#lx, irq %d", card->shortname,
2630                 snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2631
2632        snd_via82xx_proc_init(chip);
2633
2634        if ((err = snd_card_register(card)) < 0) {
2635                snd_card_free(card);
2636                return err;
2637        }
2638        pci_set_drvdata(pci, card);
2639        return 0;
2640
2641 __error:
2642        snd_card_free(card);
2643        return err;
2644}
2645
2646static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2647{
2648        snd_card_free(pci_get_drvdata(pci));
2649        pci_set_drvdata(pci, NULL);
2650}
2651
2652static struct pci_driver via82xx_driver = {
2653        .name = KBUILD_MODNAME,
2654        .id_table = snd_via82xx_ids,
2655        .probe = snd_via82xx_probe,
2656        .remove = __devexit_p(snd_via82xx_remove),
2657        .driver = {
2658                .pm = SND_VIA82XX_PM_OPS,
2659        },
2660};
2661
2662module_pci_driver(via82xx_driver);
2663
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