linux/sound/pci/via82xx.c
<<
>>
Prefs
   1/*
   2 *   ALSA driver for VIA VT82xx (South Bridge)
   3 *
   4 *   VT82C686A/B/C, VT8233A/C, VT8235
   5 *
   6 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   7 *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8 *                    2002 Takashi Iwai <tiwai@suse.de>
   9 *
  10 *   This program is free software; you can redistribute it and/or modify
  11 *   it under the terms of the GNU General Public License as published by
  12 *   the Free Software Foundation; either version 2 of the License, or
  13 *   (at your option) any later version.
  14 *
  15 *   This program is distributed in the hope that it will be useful,
  16 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *   GNU General Public License for more details.
  19 *
  20 *   You should have received a copy of the GNU General Public License
  21 *   along with this program; if not, write to the Free Software
  22 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23 *
  24 */
  25
  26/*
  27 * Changes:
  28 *
  29 * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30 *      - use the DSX channels for the first pcm playback.
  31 *        (on VIA8233, 8233C and 8235 only)
  32 *        this will allow you play simultaneously up to 4 streams.
  33 *        multi-channel playback is assigned to the second device
  34 *        on these chips.
  35 *      - support the secondary capture (on VIA8233/C,8235)
  36 *      - SPDIF support
  37 *        the DSX3 channel can be used for SPDIF output.
  38 *        on VIA8233A, this channel is assigned to the second pcm
  39 *        playback.
  40 *        the card config of alsa-lib will assign the correct
  41 *        device for applications.
  42 *      - clean up the code, separate low-level initialization
  43 *        routines for each chipset.
  44 *
  45 * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46 *      - Optimize position calculation for the 823x chips. 
  47 */
  48
  49#include <asm/io.h>
  50#include <linux/delay.h>
  51#include <linux/interrupt.h>
  52#include <linux/init.h>
  53#include <linux/pci.h>
  54#include <linux/slab.h>
  55#include <linux/gameport.h>
  56#include <linux/moduleparam.h>
  57#include <sound/core.h>
  58#include <sound/pcm.h>
  59#include <sound/pcm_params.h>
  60#include <sound/info.h>
  61#include <sound/tlv.h>
  62#include <sound/ac97_codec.h>
  63#include <sound/mpu401.h>
  64#include <sound/initval.h>
  65
  66#if 0
  67#define POINTER_DEBUG
  68#endif
  69
  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 int 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 int 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
 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
1179        runtime->hw = snd_via82xx_hw;
1180        
1181        /* set the hw rate condition */
1182        ratep = &chip->rates[viadev->direction];
1183        spin_lock_irq(&ratep->lock);
1184        ratep->used++;
1185        if (chip->spdif_on && viadev->reg_offset == 0x30) {
1186                /* DXS#3 and spdif is on */
1187                runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1188                snd_pcm_limit_hw_rates(runtime);
1189        } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1190                /* fixed DXS playback rate */
1191                runtime->hw.rates = SNDRV_PCM_RATE_48000;
1192                runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1193        } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1194                /* use full SRC capabilities of DXS */
1195                runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1196                                     SNDRV_PCM_RATE_8000_48000);
1197                runtime->hw.rate_min = 8000;
1198                runtime->hw.rate_max = 48000;
1199        } else if (! ratep->rate) {
1200                int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1201                runtime->hw.rates = chip->ac97->rates[idx];
1202                snd_pcm_limit_hw_rates(runtime);
1203        } else {
1204                /* a fixed rate */
1205                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1206                runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1207        }
1208        spin_unlock_irq(&ratep->lock);
1209
1210        /* we may remove following constaint when we modify table entries
1211           in interrupt */
1212        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1213                return err;
1214
1215        runtime->private_data = viadev;
1216        viadev->substream = substream;
1217
1218        return 0;
1219}
1220
1221
1222/*
1223 * open callback for playback on via686
1224 */
1225static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1226{
1227        struct via82xx *chip = snd_pcm_substream_chip(substream);
1228        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1229        int err;
1230
1231        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1232                return err;
1233        return 0;
1234}
1235
1236/*
1237 * open callback for playback on via823x DXS
1238 */
1239static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1240{
1241        struct via82xx *chip = snd_pcm_substream_chip(substream);
1242        struct viadev *viadev;
1243        unsigned int stream;
1244        int err;
1245
1246        viadev = &chip->devs[chip->playback_devno + substream->number];
1247        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1248                return err;
1249        stream = viadev->reg_offset / 0x10;
1250        if (chip->dxs_controls[stream]) {
1251                chip->playback_volume[stream][0] =
1252                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1253                chip->playback_volume[stream][1] =
1254                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1255                chip->dxs_controls[stream]->vd[0].access &=
1256                        ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1257                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1258                               SNDRV_CTL_EVENT_MASK_INFO,
1259                               &chip->dxs_controls[stream]->id);
1260        }
1261        return 0;
1262}
1263
1264/*
1265 * open callback for playback on via823x multi-channel
1266 */
1267static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1268{
1269        struct via82xx *chip = snd_pcm_substream_chip(substream);
1270        struct viadev *viadev = &chip->devs[chip->multi_devno];
1271        int err;
1272        /* channels constraint for VIA8233A
1273         * 3 and 5 channels are not supported
1274         */
1275        static unsigned int channels[] = {
1276                1, 2, 4, 6
1277        };
1278        static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1279                .count = ARRAY_SIZE(channels),
1280                .list = channels,
1281                .mask = 0,
1282        };
1283
1284        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1285                return err;
1286        substream->runtime->hw.channels_max = 6;
1287        if (chip->revision == VIA_REV_8233A)
1288                snd_pcm_hw_constraint_list(substream->runtime, 0,
1289                                           SNDRV_PCM_HW_PARAM_CHANNELS,
1290                                           &hw_constraints_channels);
1291        return 0;
1292}
1293
1294/*
1295 * open callback for capture on via686 and via823x
1296 */
1297static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1298{
1299        struct via82xx *chip = snd_pcm_substream_chip(substream);
1300        struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1301
1302        return snd_via82xx_pcm_open(chip, viadev, substream);
1303}
1304
1305/*
1306 * close callback
1307 */
1308static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1309{
1310        struct via82xx *chip = snd_pcm_substream_chip(substream);
1311        struct viadev *viadev = substream->runtime->private_data;
1312        struct via_rate_lock *ratep;
1313
1314        /* release the rate lock */
1315        ratep = &chip->rates[viadev->direction];
1316        spin_lock_irq(&ratep->lock);
1317        ratep->used--;
1318        if (! ratep->used)
1319                ratep->rate = 0;
1320        spin_unlock_irq(&ratep->lock);
1321        if (! ratep->rate) {
1322                if (! viadev->direction) {
1323                        snd_ac97_update_power(chip->ac97,
1324                                              AC97_PCM_FRONT_DAC_RATE, 0);
1325                        snd_ac97_update_power(chip->ac97,
1326                                              AC97_PCM_SURR_DAC_RATE, 0);
1327                        snd_ac97_update_power(chip->ac97,
1328                                              AC97_PCM_LFE_DAC_RATE, 0);
1329                } else
1330                        snd_ac97_update_power(chip->ac97,
1331                                              AC97_PCM_LR_ADC_RATE, 0);
1332        }
1333        viadev->substream = NULL;
1334        return 0;
1335}
1336
1337static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1338{
1339        struct via82xx *chip = snd_pcm_substream_chip(substream);
1340        struct viadev *viadev = substream->runtime->private_data;
1341        unsigned int stream;
1342
1343        stream = viadev->reg_offset / 0x10;
1344        if (chip->dxs_controls[stream]) {
1345                chip->dxs_controls[stream]->vd[0].access |=
1346                        SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1347                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1348                               &chip->dxs_controls[stream]->id);
1349        }
1350        return snd_via82xx_pcm_close(substream);
1351}
1352
1353
1354/* via686 playback callbacks */
1355static struct snd_pcm_ops snd_via686_playback_ops = {
1356        .open =         snd_via686_playback_open,
1357        .close =        snd_via82xx_pcm_close,
1358        .ioctl =        snd_pcm_lib_ioctl,
1359        .hw_params =    snd_via82xx_hw_params,
1360        .hw_free =      snd_via82xx_hw_free,
1361        .prepare =      snd_via686_playback_prepare,
1362        .trigger =      snd_via82xx_pcm_trigger,
1363        .pointer =      snd_via686_pcm_pointer,
1364        .page =         snd_pcm_sgbuf_ops_page,
1365};
1366
1367/* via686 capture callbacks */
1368static struct snd_pcm_ops snd_via686_capture_ops = {
1369        .open =         snd_via82xx_capture_open,
1370        .close =        snd_via82xx_pcm_close,
1371        .ioctl =        snd_pcm_lib_ioctl,
1372        .hw_params =    snd_via82xx_hw_params,
1373        .hw_free =      snd_via82xx_hw_free,
1374        .prepare =      snd_via686_capture_prepare,
1375        .trigger =      snd_via82xx_pcm_trigger,
1376        .pointer =      snd_via686_pcm_pointer,
1377        .page =         snd_pcm_sgbuf_ops_page,
1378};
1379
1380/* via823x DSX playback callbacks */
1381static struct snd_pcm_ops snd_via8233_playback_ops = {
1382        .open =         snd_via8233_playback_open,
1383        .close =        snd_via8233_playback_close,
1384        .ioctl =        snd_pcm_lib_ioctl,
1385        .hw_params =    snd_via82xx_hw_params,
1386        .hw_free =      snd_via82xx_hw_free,
1387        .prepare =      snd_via8233_playback_prepare,
1388        .trigger =      snd_via82xx_pcm_trigger,
1389        .pointer =      snd_via8233_pcm_pointer,
1390        .page =         snd_pcm_sgbuf_ops_page,
1391};
1392
1393/* via823x multi-channel playback callbacks */
1394static struct snd_pcm_ops snd_via8233_multi_ops = {
1395        .open =         snd_via8233_multi_open,
1396        .close =        snd_via82xx_pcm_close,
1397        .ioctl =        snd_pcm_lib_ioctl,
1398        .hw_params =    snd_via82xx_hw_params,
1399        .hw_free =      snd_via82xx_hw_free,
1400        .prepare =      snd_via8233_multi_prepare,
1401        .trigger =      snd_via82xx_pcm_trigger,
1402        .pointer =      snd_via8233_pcm_pointer,
1403        .page =         snd_pcm_sgbuf_ops_page,
1404};
1405
1406/* via823x capture callbacks */
1407static struct snd_pcm_ops snd_via8233_capture_ops = {
1408        .open =         snd_via82xx_capture_open,
1409        .close =        snd_via82xx_pcm_close,
1410        .ioctl =        snd_pcm_lib_ioctl,
1411        .hw_params =    snd_via82xx_hw_params,
1412        .hw_free =      snd_via82xx_hw_free,
1413        .prepare =      snd_via8233_capture_prepare,
1414        .trigger =      snd_via82xx_pcm_trigger,
1415        .pointer =      snd_via8233_pcm_pointer,
1416        .page =         snd_pcm_sgbuf_ops_page,
1417};
1418
1419
1420static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1421                        int shadow_pos, int direction)
1422{
1423        chip->devs[idx].reg_offset = reg_offset;
1424        chip->devs[idx].shadow_shift = shadow_pos * 4;
1425        chip->devs[idx].direction = direction;
1426        chip->devs[idx].port = chip->port + reg_offset;
1427}
1428
1429/*
1430 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1431 */
1432static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1433{
1434        struct snd_pcm *pcm;
1435        int i, err;
1436
1437        chip->playback_devno = 0;       /* x 4 */
1438        chip->multi_devno = 4;          /* x 1 */
1439        chip->capture_devno = 5;        /* x 2 */
1440        chip->num_devs = 7;
1441        chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1442
1443        /* PCM #0:  4 DSX playbacks and 1 capture */
1444        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1445        if (err < 0)
1446                return err;
1447        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1448        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1449        pcm->private_data = chip;
1450        strcpy(pcm->name, chip->card->shortname);
1451        chip->pcms[0] = pcm;
1452        /* set up playbacks */
1453        for (i = 0; i < 4; i++)
1454                init_viadev(chip, i, 0x10 * i, i, 0);
1455        /* capture */
1456        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1457
1458        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1459                                              snd_dma_pci_data(chip->pci),
1460                                              64*1024, VIA_MAX_BUFSIZE);
1461
1462        /* PCM #1:  multi-channel playback and 2nd capture */
1463        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1464        if (err < 0)
1465                return err;
1466        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1467        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1468        pcm->private_data = chip;
1469        strcpy(pcm->name, chip->card->shortname);
1470        chip->pcms[1] = pcm;
1471        /* set up playback */
1472        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1473        /* set up capture */
1474        init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1475
1476        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1477                                              snd_dma_pci_data(chip->pci),
1478                                              64*1024, VIA_MAX_BUFSIZE);
1479        return 0;
1480}
1481
1482/*
1483 * create pcm instances for VIA8233A
1484 */
1485static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1486{
1487        struct snd_pcm *pcm;
1488        int err;
1489
1490        chip->multi_devno = 0;
1491        chip->playback_devno = 1;
1492        chip->capture_devno = 2;
1493        chip->num_devs = 3;
1494        chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1495
1496        /* PCM #0:  multi-channel playback and capture */
1497        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1498        if (err < 0)
1499                return err;
1500        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1501        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1502        pcm->private_data = chip;
1503        strcpy(pcm->name, chip->card->shortname);
1504        chip->pcms[0] = pcm;
1505        /* set up playback */
1506        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1507        /* capture */
1508        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1509
1510        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1511                                              snd_dma_pci_data(chip->pci),
1512                                              64*1024, VIA_MAX_BUFSIZE);
1513
1514        /* SPDIF supported? */
1515        if (! ac97_can_spdif(chip->ac97))
1516                return 0;
1517
1518        /* PCM #1:  DXS3 playback (for spdif) */
1519        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1520        if (err < 0)
1521                return err;
1522        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1523        pcm->private_data = chip;
1524        strcpy(pcm->name, chip->card->shortname);
1525        chip->pcms[1] = pcm;
1526        /* set up playback */
1527        init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1528
1529        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1530                                              snd_dma_pci_data(chip->pci),
1531                                              64*1024, VIA_MAX_BUFSIZE);
1532        return 0;
1533}
1534
1535/*
1536 * create a pcm instance for via686a/b
1537 */
1538static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1539{
1540        struct snd_pcm *pcm;
1541        int err;
1542
1543        chip->playback_devno = 0;
1544        chip->capture_devno = 1;
1545        chip->num_devs = 2;
1546        chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1547
1548        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1549        if (err < 0)
1550                return err;
1551        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1552        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1553        pcm->private_data = chip;
1554        strcpy(pcm->name, chip->card->shortname);
1555        chip->pcms[0] = pcm;
1556        init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1557        init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1558
1559        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1560                                              snd_dma_pci_data(chip->pci),
1561                                              64*1024, VIA_MAX_BUFSIZE);
1562        return 0;
1563}
1564
1565
1566/*
1567 *  Mixer part
1568 */
1569
1570static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1571                                           struct snd_ctl_elem_info *uinfo)
1572{
1573        /* formerly they were "Line" and "Mic", but it looks like that they
1574         * have nothing to do with the actual physical connections...
1575         */
1576        static char *texts[2] = {
1577                "Input1", "Input2"
1578        };
1579        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1580        uinfo->count = 1;
1581        uinfo->value.enumerated.items = 2;
1582        if (uinfo->value.enumerated.item >= 2)
1583                uinfo->value.enumerated.item = 1;
1584        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1585        return 0;
1586}
1587
1588static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1589                                          struct snd_ctl_elem_value *ucontrol)
1590{
1591        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1592        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1593        ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1594        return 0;
1595}
1596
1597static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1598                                          struct snd_ctl_elem_value *ucontrol)
1599{
1600        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1601        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1602        u8 val, oval;
1603
1604        spin_lock_irq(&chip->reg_lock);
1605        oval = inb(port);
1606        val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1607        if (ucontrol->value.enumerated.item[0])
1608                val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1609        if (val != oval)
1610                outb(val, port);
1611        spin_unlock_irq(&chip->reg_lock);
1612        return val != oval;
1613}
1614
1615static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1616        .name = "Input Source Select",
1617        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1618        .info = snd_via8233_capture_source_info,
1619        .get = snd_via8233_capture_source_get,
1620        .put = snd_via8233_capture_source_put,
1621};
1622
1623#define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1624
1625static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1626                                      struct snd_ctl_elem_value *ucontrol)
1627{
1628        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1629        u8 val;
1630
1631        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1632        ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1633        return 0;
1634}
1635
1636static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1637                                      struct snd_ctl_elem_value *ucontrol)
1638{
1639        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1640        u8 val, oval;
1641
1642        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1643        val = oval & ~VIA8233_SPDIF_DX3;
1644        if (ucontrol->value.integer.value[0])
1645                val |= VIA8233_SPDIF_DX3;
1646        /* save the spdif flag for rate filtering */
1647        chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1648        if (val != oval) {
1649                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1650                return 1;
1651        }
1652        return 0;
1653}
1654
1655static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1656        .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1657        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1658        .info = snd_via8233_dxs3_spdif_info,
1659        .get = snd_via8233_dxs3_spdif_get,
1660        .put = snd_via8233_dxs3_spdif_put,
1661};
1662
1663static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1664                                       struct snd_ctl_elem_info *uinfo)
1665{
1666        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1667        uinfo->count = 2;
1668        uinfo->value.integer.min = 0;
1669        uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1670        return 0;
1671}
1672
1673static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1674                                      struct snd_ctl_elem_value *ucontrol)
1675{
1676        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1677        unsigned int idx = kcontrol->id.subdevice;
1678
1679        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1680        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1681        return 0;
1682}
1683
1684static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1685                                         struct snd_ctl_elem_value *ucontrol)
1686{
1687        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1688        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1689        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1690        return 0;
1691}
1692
1693static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1694                                      struct snd_ctl_elem_value *ucontrol)
1695{
1696        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1697        unsigned int idx = kcontrol->id.subdevice;
1698        unsigned long port = chip->port + 0x10 * idx;
1699        unsigned char val;
1700        int i, change = 0;
1701
1702        for (i = 0; i < 2; i++) {
1703                val = ucontrol->value.integer.value[i];
1704                if (val > VIA_DXS_MAX_VOLUME)
1705                        val = VIA_DXS_MAX_VOLUME;
1706                val = VIA_DXS_MAX_VOLUME - val;
1707                change |= val != chip->playback_volume[idx][i];
1708                if (change) {
1709                        chip->playback_volume[idx][i] = val;
1710                        outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1711                }
1712        }
1713        return change;
1714}
1715
1716static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1717                                         struct snd_ctl_elem_value *ucontrol)
1718{
1719        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1720        unsigned int idx;
1721        unsigned char val;
1722        int i, change = 0;
1723
1724        for (i = 0; i < 2; i++) {
1725                val = ucontrol->value.integer.value[i];
1726                if (val > VIA_DXS_MAX_VOLUME)
1727                        val = VIA_DXS_MAX_VOLUME;
1728                val = VIA_DXS_MAX_VOLUME - val;
1729                if (val != chip->playback_volume_c[i]) {
1730                        change = 1;
1731                        chip->playback_volume_c[i] = val;
1732                        for (idx = 0; idx < 4; idx++) {
1733                                unsigned long port = chip->port + 0x10 * idx;
1734                                chip->playback_volume[idx][i] = val;
1735                                outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1736                        }
1737                }
1738        }
1739        return change;
1740}
1741
1742static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1743
1744static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1745        .name = "PCM Playback Volume",
1746        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1747        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1748                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1749        .info = snd_via8233_dxs_volume_info,
1750        .get = snd_via8233_pcmdxs_volume_get,
1751        .put = snd_via8233_pcmdxs_volume_put,
1752        .tlv = { .p = db_scale_dxs }
1753};
1754
1755static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1756        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1757        .device = 0,
1758        /* .subdevice set later */
1759        .name = "PCM Playback Volume",
1760        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1761                  SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1762                  SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1763        .info = snd_via8233_dxs_volume_info,
1764        .get = snd_via8233_dxs_volume_get,
1765        .put = snd_via8233_dxs_volume_put,
1766        .tlv = { .p = db_scale_dxs }
1767};
1768
1769/*
1770 */
1771
1772static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1773{
1774        struct via82xx *chip = bus->private_data;
1775        chip->ac97_bus = NULL;
1776}
1777
1778static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1779{
1780        struct via82xx *chip = ac97->private_data;
1781        chip->ac97 = NULL;
1782}
1783
1784static struct ac97_quirk ac97_quirks[] = {
1785        {
1786                .subvendor = 0x1106,
1787                .subdevice = 0x4161,
1788                .codec_id = 0x56494161, /* VT1612A */
1789                .name = "Soltek SL-75DRV5",
1790                .type = AC97_TUNE_NONE
1791        },
1792        {       /* FIXME: which codec? */
1793                .subvendor = 0x1106,
1794                .subdevice = 0x4161,
1795                .name = "ASRock K7VT2",
1796                .type = AC97_TUNE_HP_ONLY
1797        },
1798        {
1799                .subvendor = 0x110a,
1800                .subdevice = 0x0079,
1801                .name = "Fujitsu Siemens D1289",
1802                .type = AC97_TUNE_HP_ONLY
1803        },
1804        {
1805                .subvendor = 0x1019,
1806                .subdevice = 0x0a81,
1807                .name = "ECS K7VTA3",
1808                .type = AC97_TUNE_HP_ONLY
1809        },
1810        {
1811                .subvendor = 0x1019,
1812                .subdevice = 0x0a85,
1813                .name = "ECS L7VMM2",
1814                .type = AC97_TUNE_HP_ONLY
1815        },
1816        {
1817                .subvendor = 0x1019,
1818                .subdevice = 0x1841,
1819                .name = "ECS K7VTA3",
1820                .type = AC97_TUNE_HP_ONLY
1821        },
1822        {
1823                .subvendor = 0x1849,
1824                .subdevice = 0x3059,
1825                .name = "ASRock K7VM2",
1826                .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1827        },
1828        {
1829                .subvendor = 0x14cd,
1830                .subdevice = 0x7002,
1831                .name = "Unknown",
1832                .type = AC97_TUNE_ALC_JACK
1833        },
1834        {
1835                .subvendor = 0x1071,
1836                .subdevice = 0x8590,
1837                .name = "Mitac Mobo",
1838                .type = AC97_TUNE_ALC_JACK
1839        },
1840        {
1841                .subvendor = 0x161f,
1842                .subdevice = 0x202b,
1843                .name = "Arima Notebook",
1844                .type = AC97_TUNE_HP_ONLY,
1845        },
1846        {
1847                .subvendor = 0x161f,
1848                .subdevice = 0x2032,
1849                .name = "Targa Traveller 811",
1850                .type = AC97_TUNE_HP_ONLY,
1851        },
1852        {
1853                .subvendor = 0x161f,
1854                .subdevice = 0x2032,
1855                .name = "m680x",
1856                .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1857        },
1858        {
1859                .subvendor = 0x1297,
1860                .subdevice = 0xa232,
1861                .name = "Shuttle AK32VN",
1862                .type = AC97_TUNE_HP_ONLY
1863        },
1864        { } /* terminator */
1865};
1866
1867static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1868{
1869        struct snd_ac97_template ac97;
1870        int err;
1871        static struct snd_ac97_bus_ops ops = {
1872                .write = snd_via82xx_codec_write,
1873                .read = snd_via82xx_codec_read,
1874                .wait = snd_via82xx_codec_wait,
1875        };
1876
1877        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1878                return err;
1879        chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1880        chip->ac97_bus->clock = chip->ac97_clock;
1881
1882        memset(&ac97, 0, sizeof(ac97));
1883        ac97.private_data = chip;
1884        ac97.private_free = snd_via82xx_mixer_free_ac97;
1885        ac97.pci = chip->pci;
1886        ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1887        if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1888                return err;
1889
1890        snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1891
1892        if (chip->chip_type != TYPE_VIA686) {
1893                /* use slot 10/11 */
1894                snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1895        }
1896
1897        return 0;
1898}
1899
1900#ifdef SUPPORT_JOYSTICK
1901#define JOYSTICK_ADDR   0x200
1902static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1903{
1904        struct gameport *gp;
1905        struct resource *r;
1906
1907        if (!joystick)
1908                return -ENODEV;
1909
1910        r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1911        if (!r) {
1912                printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1913                       JOYSTICK_ADDR);
1914                return -EBUSY;
1915        }
1916
1917        chip->gameport = gp = gameport_allocate_port();
1918        if (!gp) {
1919                printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1920                release_and_free_resource(r);
1921                return -ENOMEM;
1922        }
1923
1924        gameport_set_name(gp, "VIA686 Gameport");
1925        gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1926        gameport_set_dev_parent(gp, &chip->pci->dev);
1927        gp->io = JOYSTICK_ADDR;
1928        gameport_set_port_data(gp, r);
1929
1930        /* Enable legacy joystick port */
1931        *legacy |= VIA_FUNC_ENABLE_GAME;
1932        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1933
1934        gameport_register_port(chip->gameport);
1935
1936        return 0;
1937}
1938
1939static void snd_via686_free_gameport(struct via82xx *chip)
1940{
1941        if (chip->gameport) {
1942                struct resource *r = gameport_get_port_data(chip->gameport);
1943
1944                gameport_unregister_port(chip->gameport);
1945                chip->gameport = NULL;
1946                release_and_free_resource(r);
1947        }
1948}
1949#else
1950static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1951{
1952        return -ENOSYS;
1953}
1954static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1955#endif
1956
1957
1958/*
1959 *
1960 */
1961
1962static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1963{
1964        int i, err, caps;
1965        unsigned char val;
1966
1967        caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1968        for (i = 0; i < caps; i++) {
1969                snd_via8233_capture_source.index = i;
1970                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1971                if (err < 0)
1972                        return err;
1973        }
1974        if (ac97_can_spdif(chip->ac97)) {
1975                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1976                if (err < 0)
1977                        return err;
1978        }
1979        if (chip->chip_type != TYPE_VIA8233A) {
1980                /* when no h/w PCM volume control is found, use DXS volume control
1981                 * as the PCM vol control
1982                 */
1983                struct snd_ctl_elem_id sid;
1984                memset(&sid, 0, sizeof(sid));
1985                strcpy(sid.name, "PCM Playback Volume");
1986                sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1987                if (! snd_ctl_find_id(chip->card, &sid)) {
1988                        snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1989                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1990                        if (err < 0)
1991                                return err;
1992                }
1993                else /* Using DXS when PCM emulation is enabled is really weird */
1994                {
1995                        for (i = 0; i < 4; ++i) {
1996                                struct snd_kcontrol *kctl;
1997
1998                                kctl = snd_ctl_new1(
1999                                        &snd_via8233_dxs_volume_control, chip);
2000                                if (!kctl)
2001                                        return -ENOMEM;
2002                                kctl->id.subdevice = i;
2003                                err = snd_ctl_add(chip->card, kctl);
2004                                if (err < 0)
2005                                        return err;
2006                                chip->dxs_controls[i] = kctl;
2007                        }
2008                }
2009        }
2010        /* select spdif data slot 10/11 */
2011        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2012        val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2013        val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2014        pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2015
2016        return 0;
2017}
2018
2019static int __devinit snd_via686_init_misc(struct via82xx *chip)
2020{
2021        unsigned char legacy, legacy_cfg;
2022        int rev_h = 0;
2023
2024        legacy = chip->old_legacy;
2025        legacy_cfg = chip->old_legacy_cfg;
2026        legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2027        legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2028        if (chip->revision >= VIA_REV_686_H) {
2029                rev_h = 1;
2030                if (mpu_port >= 0x200) {        /* force MIDI */
2031                        mpu_port &= 0xfffc;
2032                        pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2033#ifdef CONFIG_PM
2034                        chip->mpu_port_saved = mpu_port;
2035#endif
2036                } else {
2037                        mpu_port = pci_resource_start(chip->pci, 2);
2038                }
2039        } else {
2040                switch (mpu_port) {     /* force MIDI */
2041                case 0x300:
2042                case 0x310:
2043                case 0x320:
2044                case 0x330:
2045                        legacy_cfg &= ~(3 << 2);
2046                        legacy_cfg |= (mpu_port & 0x0030) >> 2;
2047                        break;
2048                default:                        /* no, use BIOS settings */
2049                        if (legacy & VIA_FUNC_ENABLE_MIDI)
2050                                mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2051                        break;
2052                }
2053        }
2054        if (mpu_port >= 0x200 &&
2055            (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2056            != NULL) {
2057                if (rev_h)
2058                        legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2059                legacy |= VIA_FUNC_ENABLE_MIDI;
2060        } else {
2061                if (rev_h)
2062                        legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2063                legacy &= ~VIA_FUNC_ENABLE_MIDI;
2064                mpu_port = 0;
2065        }
2066
2067        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2068        pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2069        if (chip->mpu_res) {
2070                if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2071                                        mpu_port, MPU401_INFO_INTEGRATED,
2072                                        chip->irq, 0, &chip->rmidi) < 0) {
2073                        printk(KERN_WARNING "unable to initialize MPU-401"
2074                               " at 0x%lx, skipping\n", mpu_port);
2075                        legacy &= ~VIA_FUNC_ENABLE_MIDI;
2076                } else {
2077                        legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2078                }
2079                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2080        }
2081
2082        snd_via686_create_gameport(chip, &legacy);
2083
2084#ifdef CONFIG_PM
2085        chip->legacy_saved = legacy;
2086        chip->legacy_cfg_saved = legacy_cfg;
2087#endif
2088
2089        return 0;
2090}
2091
2092
2093/*
2094 * proc interface
2095 */
2096static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2097                                  struct snd_info_buffer *buffer)
2098{
2099        struct via82xx *chip = entry->private_data;
2100        int i;
2101        
2102        snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2103        for (i = 0; i < 0xa0; i += 4) {
2104                snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2105        }
2106}
2107
2108static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2109{
2110        struct snd_info_entry *entry;
2111
2112        if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2113                snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2114}
2115
2116/*
2117 *
2118 */
2119
2120static int snd_via82xx_chip_init(struct via82xx *chip)
2121{
2122        unsigned int val;
2123        unsigned long end_time;
2124        unsigned char pval;
2125
2126#if 0 /* broken on K7M? */
2127        if (chip->chip_type == TYPE_VIA686)
2128                /* disable all legacy ports */
2129                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2130#endif
2131        pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2132        if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2133                /* deassert ACLink reset, force SYNC */
2134                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2135                                      VIA_ACLINK_CTRL_ENABLE |
2136                                      VIA_ACLINK_CTRL_RESET |
2137                                      VIA_ACLINK_CTRL_SYNC);
2138                udelay(100);
2139#if 1 /* FIXME: should we do full reset here for all chip models? */
2140                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2141                udelay(100);
2142#else
2143                /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2144                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2145                                      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2146                udelay(2);
2147#endif
2148                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2149                /* note - FM data out has trouble with non VRA codecs !! */
2150                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2151                udelay(100);
2152        }
2153        
2154        /* Make sure VRA is enabled, in case we didn't do a
2155         * complete codec reset, above */
2156        pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2157        if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2158                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2159                /* note - FM data out has trouble with non VRA codecs !! */
2160                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2161                udelay(100);
2162        }
2163
2164        /* wait until codec ready */
2165        end_time = jiffies + msecs_to_jiffies(750);
2166        do {
2167                pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2168                if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2169                        break;
2170                schedule_timeout_uninterruptible(1);
2171        } while (time_before(jiffies, end_time));
2172
2173        if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2174                snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2175
2176#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2177        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2178                                 VIA_REG_AC97_SECONDARY_VALID |
2179                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2180        end_time = jiffies + msecs_to_jiffies(750);
2181        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2182                                 VIA_REG_AC97_SECONDARY_VALID |
2183                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2184        do {
2185                if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2186                        chip->ac97_secondary = 1;
2187                        goto __ac97_ok2;
2188                }
2189                schedule_timeout_uninterruptible(1);
2190        } while (time_before(jiffies, end_time));
2191        /* This is ok, the most of motherboards have only one codec */
2192
2193      __ac97_ok2:
2194#endif
2195
2196        if (chip->chip_type == TYPE_VIA686) {
2197                /* route FM trap to IRQ, disable FM trap */
2198                pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2199                /* disable all GPI interrupts */
2200                outl(0, VIAREG(chip, GPI_INTR));
2201        }
2202
2203        if (chip->chip_type != TYPE_VIA686) {
2204                /* Workaround for Award BIOS bug:
2205                 * DXS channels don't work properly with VRA if MC97 is disabled.
2206                 */
2207                struct pci_dev *pci;
2208                pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2209                if (pci) {
2210                        unsigned char data;
2211                        pci_read_config_byte(pci, 0x44, &data);
2212                        pci_write_config_byte(pci, 0x44, data | 0x40);
2213                        pci_dev_put(pci);
2214                }
2215        }
2216
2217        if (chip->chip_type != TYPE_VIA8233A) {
2218                int i, idx;
2219                for (idx = 0; idx < 4; idx++) {
2220                        unsigned long port = chip->port + 0x10 * idx;
2221                        for (i = 0; i < 2; i++) {
2222                                chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2223                                outb(chip->playback_volume_c[i],
2224                                     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2225                        }
2226                }
2227        }
2228
2229        return 0;
2230}
2231
2232#ifdef CONFIG_PM
2233/*
2234 * power management
2235 */
2236static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2237{
2238        struct snd_card *card = pci_get_drvdata(pci);
2239        struct via82xx *chip = card->private_data;
2240        int i;
2241
2242        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2243        for (i = 0; i < 2; i++)
2244                snd_pcm_suspend_all(chip->pcms[i]);
2245        for (i = 0; i < chip->num_devs; i++)
2246                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2247        synchronize_irq(chip->irq);
2248        snd_ac97_suspend(chip->ac97);
2249
2250        /* save misc values */
2251        if (chip->chip_type != TYPE_VIA686) {
2252                pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2253                chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2254                chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2255        }
2256
2257        pci_disable_device(pci);
2258        pci_save_state(pci);
2259        pci_set_power_state(pci, pci_choose_state(pci, state));
2260        return 0;
2261}
2262
2263static int snd_via82xx_resume(struct pci_dev *pci)
2264{
2265        struct snd_card *card = pci_get_drvdata(pci);
2266        struct via82xx *chip = card->private_data;
2267        int i;
2268
2269        pci_set_power_state(pci, PCI_D0);
2270        pci_restore_state(pci);
2271        if (pci_enable_device(pci) < 0) {
2272                printk(KERN_ERR "via82xx: pci_enable_device failed, "
2273                       "disabling device\n");
2274                snd_card_disconnect(card);
2275                return -EIO;
2276        }
2277        pci_set_master(pci);
2278
2279        snd_via82xx_chip_init(chip);
2280
2281        if (chip->chip_type == TYPE_VIA686) {
2282                if (chip->mpu_port_saved)
2283                        pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2284                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2285                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2286        } else {
2287                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2288                outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2289                outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2290        }
2291
2292        snd_ac97_resume(chip->ac97);
2293
2294        for (i = 0; i < chip->num_devs; i++)
2295                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2296
2297        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2298        return 0;
2299}
2300#endif /* CONFIG_PM */
2301
2302static int snd_via82xx_free(struct via82xx *chip)
2303{
2304        unsigned int i;
2305
2306        if (chip->irq < 0)
2307                goto __end_hw;
2308        /* disable interrupts */
2309        for (i = 0; i < chip->num_devs; i++)
2310                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2311
2312        if (chip->irq >= 0)
2313                free_irq(chip->irq, chip);
2314 __end_hw:
2315        release_and_free_resource(chip->mpu_res);
2316        pci_release_regions(chip->pci);
2317
2318        if (chip->chip_type == TYPE_VIA686) {
2319                snd_via686_free_gameport(chip);
2320                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2321                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2322        }
2323        pci_disable_device(chip->pci);
2324        kfree(chip);
2325        return 0;
2326}
2327
2328static int snd_via82xx_dev_free(struct snd_device *device)
2329{
2330        struct via82xx *chip = device->device_data;
2331        return snd_via82xx_free(chip);
2332}
2333
2334static int __devinit snd_via82xx_create(struct snd_card *card,
2335                                        struct pci_dev *pci,
2336                                        int chip_type,
2337                                        int revision,
2338                                        unsigned int ac97_clock,
2339                                        struct via82xx ** r_via)
2340{
2341        struct via82xx *chip;
2342        int err;
2343        static struct snd_device_ops ops = {
2344                .dev_free =     snd_via82xx_dev_free,
2345        };
2346
2347        if ((err = pci_enable_device(pci)) < 0)
2348                return err;
2349
2350        if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2351                pci_disable_device(pci);
2352                return -ENOMEM;
2353        }
2354
2355        chip->chip_type = chip_type;
2356        chip->revision = revision;
2357
2358        spin_lock_init(&chip->reg_lock);
2359        spin_lock_init(&chip->rates[0].lock);
2360        spin_lock_init(&chip->rates[1].lock);
2361        chip->card = card;
2362        chip->pci = pci;
2363        chip->irq = -1;
2364
2365        pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2366        pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2367        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2368                              chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2369
2370        if ((err = pci_request_regions(pci, card->driver)) < 0) {
2371                kfree(chip);
2372                pci_disable_device(pci);
2373                return err;
2374        }
2375        chip->port = pci_resource_start(pci, 0);
2376        if (request_irq(pci->irq,
2377                        chip_type == TYPE_VIA8233 ?
2378                        snd_via8233_interrupt : snd_via686_interrupt,
2379                        IRQF_SHARED,
2380                        card->driver, chip)) {
2381                snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2382                snd_via82xx_free(chip);
2383                return -EBUSY;
2384        }
2385        chip->irq = pci->irq;
2386        if (ac97_clock >= 8000 && ac97_clock <= 48000)
2387                chip->ac97_clock = ac97_clock;
2388        synchronize_irq(chip->irq);
2389
2390        if ((err = snd_via82xx_chip_init(chip)) < 0) {
2391                snd_via82xx_free(chip);
2392                return err;
2393        }
2394
2395        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2396                snd_via82xx_free(chip);
2397                return err;
2398        }
2399
2400        /* The 8233 ac97 controller does not implement the master bit
2401         * in the pci command register. IMHO this is a violation of the PCI spec.
2402         * We call pci_set_master here because it does not hurt. */
2403        pci_set_master(pci);
2404
2405        snd_card_set_dev(card, &pci->dev);
2406
2407        *r_via = chip;
2408        return 0;
2409}
2410
2411struct via823x_info {
2412        int revision;
2413        char *name;
2414        int type;
2415};
2416static struct via823x_info via823x_cards[] __devinitdata = {
2417        { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2418        { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2419        { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2420        { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2421        { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2422        { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2423        { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2424};
2425
2426/*
2427 * auto detection of DXS channel supports.
2428 */
2429
2430static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2431        SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2432        SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2433        SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2434        SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2435        SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2436        SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2437        SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2438        SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2439        SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2440        SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2441        SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2442        SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2443        SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2444        SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2445        SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2446        SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2447        SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2448        SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2449        SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2450        SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2451        SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2452        SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2453        SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2454        SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2455        SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2456        SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2457        SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2458        SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2459        SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2460        SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2461        SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2462        SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2463        SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2464        SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2465        SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2466        SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2467        SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2468        SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2469        SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2470        SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2471        { } /* terminator */
2472};
2473
2474static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2475{
2476        const struct snd_pci_quirk *w;
2477
2478        w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2479        if (w) {
2480                snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2481                            w->name);
2482                return w->value;
2483        }
2484
2485        /* for newer revision, default to DXS_SRC */
2486        if (revision >= VIA_REV_8235)
2487                return VIA_DXS_SRC;
2488
2489        /*
2490         * not detected, try 48k rate only to be sure.
2491         */
2492        printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2493        printk(KERN_INFO "         Please try dxs_support=5 option\n");
2494        printk(KERN_INFO "         and report if it works on your machine.\n");
2495        printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2496        return VIA_DXS_48K;
2497};
2498
2499static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2500                                       const struct pci_device_id *pci_id)
2501{
2502        struct snd_card *card;
2503        struct via82xx *chip;
2504        int chip_type = 0, card_type;
2505        unsigned int i;
2506        int err;
2507
2508        err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2509        if (err < 0)
2510                return err;
2511
2512        card_type = pci_id->driver_data;
2513        switch (card_type) {
2514        case TYPE_CARD_VIA686:
2515                strcpy(card->driver, "VIA686A");
2516                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2517                chip_type = TYPE_VIA686;
2518                break;
2519        case TYPE_CARD_VIA8233:
2520                chip_type = TYPE_VIA8233;
2521                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2522                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2523                        if (pci->revision == via823x_cards[i].revision) {
2524                                chip_type = via823x_cards[i].type;
2525                                strcpy(card->shortname, via823x_cards[i].name);
2526                                break;
2527                        }
2528                }
2529                if (chip_type != TYPE_VIA8233A) {
2530                        if (dxs_support == VIA_DXS_AUTO)
2531                                dxs_support = check_dxs_list(pci, pci->revision);
2532                        /* force to use VIA8233 or 8233A model according to
2533                         * dxs_support module option
2534                         */
2535                        if (dxs_support == VIA_DXS_DISABLE)
2536                                chip_type = TYPE_VIA8233A;
2537                        else
2538                                chip_type = TYPE_VIA8233;
2539                }
2540                if (chip_type == TYPE_VIA8233A)
2541                        strcpy(card->driver, "VIA8233A");
2542                else if (pci->revision >= VIA_REV_8237)
2543                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
2544                else
2545                        strcpy(card->driver, "VIA8233");
2546                break;
2547        default:
2548                snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2549                err = -EINVAL;
2550                goto __error;
2551        }
2552                
2553        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2554                                      ac97_clock, &chip)) < 0)
2555                goto __error;
2556        card->private_data = chip;
2557        if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2558                goto __error;
2559
2560        if (chip_type == TYPE_VIA686) {
2561                if ((err = snd_via686_pcm_new(chip)) < 0 ||
2562                    (err = snd_via686_init_misc(chip)) < 0)
2563                        goto __error;
2564        } else {
2565                if (chip_type == TYPE_VIA8233A) {
2566                        if ((err = snd_via8233a_pcm_new(chip)) < 0)
2567                                goto __error;
2568                        // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2569                } else {
2570                        if ((err = snd_via8233_pcm_new(chip)) < 0)
2571                                goto __error;
2572                        if (dxs_support == VIA_DXS_48K)
2573                                chip->dxs_fixed = 1;
2574                        else if (dxs_support == VIA_DXS_NO_VRA)
2575                                chip->no_vra = 1;
2576                        else if (dxs_support == VIA_DXS_SRC) {
2577                                chip->no_vra = 1;
2578                                chip->dxs_src = 1;
2579                        }
2580                }
2581                if ((err = snd_via8233_init_misc(chip)) < 0)
2582                        goto __error;
2583        }
2584
2585        /* disable interrupts */
2586        for (i = 0; i < chip->num_devs; i++)
2587                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2588
2589        snprintf(card->longname, sizeof(card->longname),
2590                 "%s with %s at %#lx, irq %d", card->shortname,
2591                 snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2592
2593        snd_via82xx_proc_init(chip);
2594
2595        if ((err = snd_card_register(card)) < 0) {
2596                snd_card_free(card);
2597                return err;
2598        }
2599        pci_set_drvdata(pci, card);
2600        return 0;
2601
2602 __error:
2603        snd_card_free(card);
2604        return err;
2605}
2606
2607static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2608{
2609        snd_card_free(pci_get_drvdata(pci));
2610        pci_set_drvdata(pci, NULL);
2611}
2612
2613static struct pci_driver driver = {
2614        .name = "VIA 82xx Audio",
2615        .id_table = snd_via82xx_ids,
2616        .probe = snd_via82xx_probe,
2617        .remove = __devexit_p(snd_via82xx_remove),
2618#ifdef CONFIG_PM
2619        .suspend = snd_via82xx_suspend,
2620        .resume = snd_via82xx_resume,
2621#endif
2622};
2623
2624static int __init alsa_card_via82xx_init(void)
2625{
2626        return pci_register_driver(&driver);
2627}
2628
2629static void __exit alsa_card_via82xx_exit(void)
2630{
2631        pci_unregister_driver(&driver);
2632}
2633
2634module_init(alsa_card_via82xx_init)
2635module_exit(alsa_card_via82xx_exit)
2636