linux/sound/pci/via82xx.c
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   1/*
   2 *   ALSA driver for VIA VT82xx (South Bridge)
   3 *
   4 *   VT82C686A/B/C, VT8233A/C, VT8235
   5 *
   6 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   7 *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   8 *                    2002 Takashi Iwai <tiwai@suse.de>
   9 *
  10 *   This program is free software; you can redistribute it and/or modify
  11 *   it under the terms of the GNU General Public License as published by
  12 *   the Free Software Foundation; either version 2 of the License, or
  13 *   (at your option) any later version.
  14 *
  15 *   This program is distributed in the hope that it will be useful,
  16 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *   GNU General Public License for more details.
  19 *
  20 *   You should have received a copy of the GNU General Public License
  21 *   along with this program; if not, write to the Free Software
  22 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23 *
  24 */
  25
  26/*
  27 * Changes:
  28 *
  29 * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  30 *      - use the DSX channels for the first pcm playback.
  31 *        (on VIA8233, 8233C and 8235 only)
  32 *        this will allow you play simultaneously up to 4 streams.
  33 *        multi-channel playback is assigned to the second device
  34 *        on these chips.
  35 *      - support the secondary capture (on VIA8233/C,8235)
  36 *      - SPDIF support
  37 *        the DSX3 channel can be used for SPDIF output.
  38 *        on VIA8233A, this channel is assigned to the second pcm
  39 *        playback.
  40 *        the card config of alsa-lib will assign the correct
  41 *        device for applications.
  42 *      - clean up the code, separate low-level initialization
  43 *        routines for each chipset.
  44 *
  45 * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  46 *      - Optimize position calculation for the 823x chips. 
  47 */
  48
  49#include <asm/io.h>
  50#include <linux/delay.h>
  51#include <linux/interrupt.h>
  52#include <linux/init.h>
  53#include <linux/pci.h>
  54#include <linux/slab.h>
  55#include <linux/gameport.h>
  56#include <linux/module.h>
  57#include <sound/core.h>
  58#include <sound/pcm.h>
  59#include <sound/pcm_params.h>
  60#include <sound/info.h>
  61#include <sound/tlv.h>
  62#include <sound/ac97_codec.h>
  63#include <sound/mpu401.h>
  64#include <sound/initval.h>
  65
  66#if 0
  67#define POINTER_DEBUG
  68#endif
  69
  70MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71MODULE_DESCRIPTION("VIA VT82xx audio");
  72MODULE_LICENSE("GPL");
  73MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  74
  75#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  76#define SUPPORT_JOYSTICK 1
  77#endif
  78
  79static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81static long mpu_port;
  82#ifdef SUPPORT_JOYSTICK
  83static bool joystick;
  84#endif
  85static int ac97_clock = 48000;
  86static char *ac97_quirk;
  87static int dxs_support;
  88static int dxs_init_volume = 31;
  89static int nodelay;
  90
  91module_param(index, int, 0444);
  92MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  93module_param(id, charp, 0444);
  94MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  95module_param(mpu_port, long, 0444);
  96MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  97#ifdef SUPPORT_JOYSTICK
  98module_param(joystick, bool, 0444);
  99MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
 100#endif
 101module_param(ac97_clock, int, 0444);
 102MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 103module_param(ac97_quirk, charp, 0444);
 104MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 105module_param(dxs_support, int, 0444);
 106MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 107module_param(dxs_init_volume, int, 0644);
 108MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
 109module_param(nodelay, int, 0444);
 110MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
 111
 112/* just for backward compatibility */
 113static bool enable;
 114module_param(enable, bool, 0444);
 115
 116
 117/* revision numbers for via686 */
 118#define VIA_REV_686_A           0x10
 119#define VIA_REV_686_B           0x11
 120#define VIA_REV_686_C           0x12
 121#define VIA_REV_686_D           0x13
 122#define VIA_REV_686_E           0x14
 123#define VIA_REV_686_H           0x20
 124
 125/* revision numbers for via8233 */
 126#define VIA_REV_PRE_8233        0x10    /* not in market */
 127#define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 128#define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 129#define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 130#define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 131#define VIA_REV_8237            0x60
 132#define VIA_REV_8251            0x70
 133
 134/*
 135 *  Direct registers
 136 */
 137
 138#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 139#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 140
 141/* common offsets */
 142#define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 143#define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 144#define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 145#define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 146#define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 147#define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 148#define   VIA_REG_STAT_EOL              0x02    /* RWC */
 149#define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 150#define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 151#define   VIA_REG_CTRL_START            0x80    /* WO */
 152#define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 153#define   VIA_REG_CTRL_AUTOSTART        0x20
 154#define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 155#define   VIA_REG_CTRL_INT_STOP         0x04            
 156#define   VIA_REG_CTRL_INT_EOL          0x02
 157#define   VIA_REG_CTRL_INT_FLAG         0x01
 158#define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 159#define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 160#define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 161#define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 162#define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 163#define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 164#define   VIA_REG_TYPE_INT_LLINE        0x00
 165#define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 166#define   VIA_REG_TYPE_INT_LESSONE      0x08
 167#define   VIA_REG_TYPE_INT_MASK         0x0c
 168#define   VIA_REG_TYPE_INT_EOL          0x02
 169#define   VIA_REG_TYPE_INT_FLAG         0x01
 170#define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 171#define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 172#define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 173#define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 174#define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 175#define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 176#define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 177
 178#define DEFINE_VIA_REGSET(name,val) \
 179enum {\
 180        VIA_REG_##name##_STATUS         = (val),\
 181        VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 182        VIA_REG_##name##_TYPE           = (val) + 0x02,\
 183        VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 184        VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 185        VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 186        VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 187}
 188
 189/* playback block */
 190DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 191DEFINE_VIA_REGSET(CAPTURE, 0x10);
 192DEFINE_VIA_REGSET(FM, 0x20);
 193
 194/* AC'97 */
 195#define VIA_REG_AC97                    0x80    /* dword */
 196#define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 197#define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 198#define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 199#define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 200#define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 201#define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 202#define   VIA_REG_AC97_BUSY             (1<<24)
 203#define   VIA_REG_AC97_READ             (1<<23)
 204#define   VIA_REG_AC97_CMD_SHIFT        16
 205#define   VIA_REG_AC97_CMD_MASK         0x7e
 206#define   VIA_REG_AC97_DATA_SHIFT       0
 207#define   VIA_REG_AC97_DATA_MASK        0xffff
 208
 209#define VIA_REG_SGD_SHADOW              0x84    /* dword */
 210/* via686 */
 211#define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 212#define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 213#define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 214#define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 215#define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 216#define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 217#define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 218#define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 219#define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 220#define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 221#define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 222#define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 223/* via8233 */
 224#define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 225#define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 226#define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 227#define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 228#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 229#define   VIA8233_REG_SGD_CHAN_SDX      0
 230#define   VIA8233_REG_SGD_CHAN_MULTI    4
 231#define   VIA8233_REG_SGD_CHAN_REC      6
 232#define   VIA8233_REG_SGD_CHAN_REC1     7
 233
 234#define VIA_REG_GPI_STATUS              0x88
 235#define VIA_REG_GPI_INTR                0x8c
 236
 237/* multi-channel and capture registers for via8233 */
 238DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 239DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 240
 241/* via8233-specific registers */
 242#define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 243#define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 244#define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 245#define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 246#define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 247#define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 248#define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 249#define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 250
 251#define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 252
 253#define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 254#define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 255#define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 256#define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 257
 258#define VIA_TBL_BIT_FLAG        0x40000000
 259#define VIA_TBL_BIT_EOL         0x80000000
 260
 261/* pci space */
 262#define VIA_ACLINK_STAT         0x40
 263#define  VIA_ACLINK_C11_READY   0x20
 264#define  VIA_ACLINK_C10_READY   0x10
 265#define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 266#define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 267#define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 268#define VIA_ACLINK_CTRL         0x41
 269#define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 270#define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 271#define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 272#define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 273#define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 274#define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 275#define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 276#define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 277#define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 278                                 VIA_ACLINK_CTRL_RESET|\
 279                                 VIA_ACLINK_CTRL_PCM|\
 280                                 VIA_ACLINK_CTRL_VRA)
 281#define VIA_FUNC_ENABLE         0x42
 282#define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 283#define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 284#define  VIA_FUNC_RX2C_WRITE    0x20
 285#define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 286#define  VIA_FUNC_ENABLE_GAME   0x08
 287#define  VIA_FUNC_ENABLE_FM     0x04
 288#define  VIA_FUNC_ENABLE_MIDI   0x02
 289#define  VIA_FUNC_ENABLE_SB     0x01
 290#define VIA_PNP_CONTROL         0x43
 291#define VIA_FM_NMI_CTRL         0x48
 292#define VIA8233_VOLCHG_CTRL     0x48
 293#define VIA8233_SPDIF_CTRL      0x49
 294#define  VIA8233_SPDIF_DX3      0x08
 295#define  VIA8233_SPDIF_SLOT_MASK        0x03
 296#define  VIA8233_SPDIF_SLOT_1011        0x00
 297#define  VIA8233_SPDIF_SLOT_34          0x01
 298#define  VIA8233_SPDIF_SLOT_78          0x02
 299#define  VIA8233_SPDIF_SLOT_69          0x03
 300
 301/*
 302 */
 303
 304#define VIA_DXS_AUTO    0
 305#define VIA_DXS_ENABLE  1
 306#define VIA_DXS_DISABLE 2
 307#define VIA_DXS_48K     3
 308#define VIA_DXS_NO_VRA  4
 309#define VIA_DXS_SRC     5
 310
 311
 312/*
 313 * pcm stream
 314 */
 315
 316struct snd_via_sg_table {
 317        unsigned int offset;
 318        unsigned int size;
 319} ;
 320
 321#define VIA_TABLE_SIZE  255
 322#define VIA_MAX_BUFSIZE (1<<24)
 323
 324struct viadev {
 325        unsigned int reg_offset;
 326        unsigned long port;
 327        int direction;  /* playback = 0, capture = 1 */
 328        struct snd_pcm_substream *substream;
 329        int running;
 330        unsigned int tbl_entries; /* # descriptors */
 331        struct snd_dma_buffer table;
 332        struct snd_via_sg_table *idx_table;
 333        /* for recovery from the unexpected pointer */
 334        unsigned int lastpos;
 335        unsigned int fragsize;
 336        unsigned int bufsize;
 337        unsigned int bufsize2;
 338        int hwptr_done;         /* processed frame position in the buffer */
 339        int in_interrupt;
 340        int shadow_shift;
 341};
 342
 343
 344enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 345enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 346
 347#define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 348
 349struct via_rate_lock {
 350        spinlock_t lock;
 351        int rate;
 352        int used;
 353};
 354
 355struct via82xx {
 356        int irq;
 357
 358        unsigned long port;
 359        struct resource *mpu_res;
 360        int chip_type;
 361        unsigned char revision;
 362
 363        unsigned char old_legacy;
 364        unsigned char old_legacy_cfg;
 365#ifdef CONFIG_PM
 366        unsigned char legacy_saved;
 367        unsigned char legacy_cfg_saved;
 368        unsigned char spdif_ctrl_saved;
 369        unsigned char capture_src_saved[2];
 370        unsigned int mpu_port_saved;
 371#endif
 372
 373        unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 374        unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 375
 376        unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 377
 378        struct pci_dev *pci;
 379        struct snd_card *card;
 380
 381        unsigned int num_devs;
 382        unsigned int playback_devno, multi_devno, capture_devno;
 383        struct viadev devs[VIA_MAX_DEVS];
 384        struct via_rate_lock rates[2]; /* playback and capture */
 385        unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 386        unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 387        unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 388        unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 389
 390        struct snd_pcm *pcms[2];
 391        struct snd_rawmidi *rmidi;
 392        struct snd_kcontrol *dxs_controls[4];
 393
 394        struct snd_ac97_bus *ac97_bus;
 395        struct snd_ac97 *ac97;
 396        unsigned int ac97_clock;
 397        unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 398
 399        spinlock_t reg_lock;
 400        struct snd_info_entry *proc_entry;
 401
 402#ifdef SUPPORT_JOYSTICK
 403        struct gameport *gameport;
 404#endif
 405};
 406
 407static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_ids) = {
 408        /* 0x1106, 0x3058 */
 409        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 410        /* 0x1106, 0x3059 */
 411        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 412        { 0, }
 413};
 414
 415MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 416
 417/*
 418 */
 419
 420/*
 421 * allocate and initialize the descriptor buffers
 422 * periods = number of periods
 423 * fragsize = period size in bytes
 424 */
 425static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 426                           struct pci_dev *pci,
 427                           unsigned int periods, unsigned int fragsize)
 428{
 429        unsigned int i, idx, ofs, rest;
 430        struct via82xx *chip = snd_pcm_substream_chip(substream);
 431
 432        if (dev->table.area == NULL) {
 433                /* the start of each lists must be aligned to 8 bytes,
 434                 * but the kernel pages are much bigger, so we don't care
 435                 */
 436                if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 437                                        PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 438                                        &dev->table) < 0)
 439                        return -ENOMEM;
 440        }
 441        if (! dev->idx_table) {
 442                dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 443                if (! dev->idx_table)
 444                        return -ENOMEM;
 445        }
 446
 447        /* fill the entries */
 448        idx = 0;
 449        ofs = 0;
 450        for (i = 0; i < periods; i++) {
 451                rest = fragsize;
 452                /* fill descriptors for a period.
 453                 * a period can be split to several descriptors if it's
 454                 * over page boundary.
 455                 */
 456                do {
 457                        unsigned int r;
 458                        unsigned int flag;
 459                        unsigned int addr;
 460
 461                        if (idx >= VIA_TABLE_SIZE) {
 462                                snd_printk(KERN_ERR "via82xx: too much table size!\n");
 463                                return -EINVAL;
 464                        }
 465                        addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 466                        ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 467                        r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 468                        rest -= r;
 469                        if (! rest) {
 470                                if (i == periods - 1)
 471                                        flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 472                                else
 473                                        flag = VIA_TBL_BIT_FLAG; /* period boundary */
 474                        } else
 475                                flag = 0; /* period continues to the next */
 476                        /*
 477                        printk(KERN_DEBUG "via: tbl %d: at %d  size %d "
 478                               "(rest %d)\n", idx, ofs, r, rest);
 479                        */
 480                        ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 481                        dev->idx_table[idx].offset = ofs;
 482                        dev->idx_table[idx].size = r;
 483                        ofs += r;
 484                        idx++;
 485                } while (rest > 0);
 486        }
 487        dev->tbl_entries = idx;
 488        dev->bufsize = periods * fragsize;
 489        dev->bufsize2 = dev->bufsize / 2;
 490        dev->fragsize = fragsize;
 491        return 0;
 492}
 493
 494
 495static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 496                           struct pci_dev *pci)
 497{
 498        if (dev->table.area) {
 499                snd_dma_free_pages(&dev->table);
 500                dev->table.area = NULL;
 501        }
 502        kfree(dev->idx_table);
 503        dev->idx_table = NULL;
 504        return 0;
 505}
 506
 507/*
 508 *  Basic I/O
 509 */
 510
 511static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 512{
 513        return inl(VIAREG(chip, AC97));
 514}
 515 
 516static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 517{
 518        outl(val, VIAREG(chip, AC97));
 519}
 520 
 521static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 522{
 523        unsigned int timeout = 1000;    /* 1ms */
 524        unsigned int val;
 525        
 526        while (timeout-- > 0) {
 527                udelay(1);
 528                if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 529                        return val & 0xffff;
 530        }
 531        snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 532                   secondary, snd_via82xx_codec_xread(chip));
 533        return -EIO;
 534}
 535 
 536static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 537{
 538        unsigned int timeout = 1000;    /* 1ms */
 539        unsigned int val, val1;
 540        unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 541                                         VIA_REG_AC97_SECONDARY_VALID;
 542        
 543        while (timeout-- > 0) {
 544                val = snd_via82xx_codec_xread(chip);
 545                val1 = val & (VIA_REG_AC97_BUSY | stat);
 546                if (val1 == stat)
 547                        return val & 0xffff;
 548                udelay(1);
 549        }
 550        return -EIO;
 551}
 552 
 553static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 554{
 555        struct via82xx *chip = ac97->private_data;
 556        int err;
 557        err = snd_via82xx_codec_ready(chip, ac97->num);
 558        /* here we need to wait fairly for long time.. */
 559        if (!nodelay)
 560                msleep(500);
 561}
 562
 563static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 564                                    unsigned short reg,
 565                                    unsigned short val)
 566{
 567        struct via82xx *chip = ac97->private_data;
 568        unsigned int xval;
 569
 570        xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 571        xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 572        xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 573        xval |= val << VIA_REG_AC97_DATA_SHIFT;
 574        snd_via82xx_codec_xwrite(chip, xval);
 575        snd_via82xx_codec_ready(chip, ac97->num);
 576}
 577
 578static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 579{
 580        struct via82xx *chip = ac97->private_data;
 581        unsigned int xval, val = 0xffff;
 582        int again = 0;
 583
 584        xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 585        xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 586        xval |= VIA_REG_AC97_READ;
 587        xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 588        while (1) {
 589                if (again++ > 3) {
 590                        snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 591                                   ac97->num, snd_via82xx_codec_xread(chip));
 592                        return 0xffff;
 593                }
 594                snd_via82xx_codec_xwrite(chip, xval);
 595                udelay (20);
 596                if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 597                        udelay(25);
 598                        val = snd_via82xx_codec_xread(chip);
 599                        break;
 600                }
 601        }
 602        return val & 0xffff;
 603}
 604
 605static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 606{
 607        outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 608             VIADEV_REG(viadev, OFFSET_CONTROL));
 609        inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 610        udelay(50);
 611        /* disable interrupts */
 612        outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 613        /* clear interrupts */
 614        outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 615        outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 616        // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 617        viadev->lastpos = 0;
 618        viadev->hwptr_done = 0;
 619}
 620
 621
 622/*
 623 *  Interrupt handler
 624 *  Used for 686 and 8233A
 625 */
 626static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 627{
 628        struct via82xx *chip = dev_id;
 629        unsigned int status;
 630        unsigned int i;
 631
 632        status = inl(VIAREG(chip, SGD_SHADOW));
 633        if (! (status & chip->intr_mask)) {
 634                if (chip->rmidi)
 635                        /* check mpu401 interrupt */
 636                        return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 637                return IRQ_NONE;
 638        }
 639
 640        /* check status for each stream */
 641        spin_lock(&chip->reg_lock);
 642        for (i = 0; i < chip->num_devs; i++) {
 643                struct viadev *viadev = &chip->devs[i];
 644                unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 645                if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 646                        continue;
 647                if (viadev->substream && viadev->running) {
 648                        /*
 649                         * Update hwptr_done based on 'period elapsed'
 650                         * interrupts. We'll use it, when the chip returns 0 
 651                         * for OFFSET_CURR_COUNT.
 652                         */
 653                        if (c_status & VIA_REG_STAT_EOL)
 654                                viadev->hwptr_done = 0;
 655                        else
 656                                viadev->hwptr_done += viadev->fragsize;
 657                        viadev->in_interrupt = c_status;
 658                        spin_unlock(&chip->reg_lock);
 659                        snd_pcm_period_elapsed(viadev->substream);
 660                        spin_lock(&chip->reg_lock);
 661                        viadev->in_interrupt = 0;
 662                }
 663                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 664        }
 665        spin_unlock(&chip->reg_lock);
 666        return IRQ_HANDLED;
 667}
 668
 669/*
 670 *  Interrupt handler
 671 */
 672static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 673{
 674        struct via82xx *chip = dev_id;
 675        unsigned int status;
 676        unsigned int i;
 677        int irqreturn = 0;
 678
 679        /* check status for each stream */
 680        spin_lock(&chip->reg_lock);
 681        status = inl(VIAREG(chip, SGD_SHADOW));
 682
 683        for (i = 0; i < chip->num_devs; i++) {
 684                struct viadev *viadev = &chip->devs[i];
 685                struct snd_pcm_substream *substream;
 686                unsigned char c_status, shadow_status;
 687
 688                shadow_status = (status >> viadev->shadow_shift) &
 689                        (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 690                         VIA_REG_STAT_FLAG);
 691                c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 692                if (!c_status)
 693                        continue;
 694
 695                substream = viadev->substream;
 696                if (substream && viadev->running) {
 697                        /*
 698                         * Update hwptr_done based on 'period elapsed'
 699                         * interrupts. We'll use it, when the chip returns 0 
 700                         * for OFFSET_CURR_COUNT.
 701                         */
 702                        if (c_status & VIA_REG_STAT_EOL)
 703                                viadev->hwptr_done = 0;
 704                        else
 705                                viadev->hwptr_done += viadev->fragsize;
 706                        viadev->in_interrupt = c_status;
 707                        if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 708                                viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 709                        spin_unlock(&chip->reg_lock);
 710
 711                        snd_pcm_period_elapsed(substream);
 712
 713                        spin_lock(&chip->reg_lock);
 714                        viadev->in_interrupt = 0;
 715                }
 716                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 717                irqreturn = 1;
 718        }
 719        spin_unlock(&chip->reg_lock);
 720        return IRQ_RETVAL(irqreturn);
 721}
 722
 723/*
 724 *  PCM callbacks
 725 */
 726
 727/*
 728 * trigger callback
 729 */
 730static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 731{
 732        struct via82xx *chip = snd_pcm_substream_chip(substream);
 733        struct viadev *viadev = substream->runtime->private_data;
 734        unsigned char val;
 735
 736        if (chip->chip_type != TYPE_VIA686)
 737                val = VIA_REG_CTRL_INT;
 738        else
 739                val = 0;
 740        switch (cmd) {
 741        case SNDRV_PCM_TRIGGER_START:
 742        case SNDRV_PCM_TRIGGER_RESUME:
 743                val |= VIA_REG_CTRL_START;
 744                viadev->running = 1;
 745                break;
 746        case SNDRV_PCM_TRIGGER_STOP:
 747        case SNDRV_PCM_TRIGGER_SUSPEND:
 748                val = VIA_REG_CTRL_TERMINATE;
 749                viadev->running = 0;
 750                break;
 751        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 752                val |= VIA_REG_CTRL_PAUSE;
 753                viadev->running = 0;
 754                break;
 755        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 756                viadev->running = 1;
 757                break;
 758        default:
 759                return -EINVAL;
 760        }
 761        outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 762        if (cmd == SNDRV_PCM_TRIGGER_STOP)
 763                snd_via82xx_channel_reset(chip, viadev);
 764        return 0;
 765}
 766
 767
 768/*
 769 * pointer callbacks
 770 */
 771
 772/*
 773 * calculate the linear position at the given sg-buffer index and the rest count
 774 */
 775
 776#define check_invalid_pos(viadev,pos) \
 777        ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 778                                     viadev->lastpos < viadev->bufsize2))
 779
 780static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 781                                           unsigned int count)
 782{
 783        unsigned int size, base, res;
 784
 785        size = viadev->idx_table[idx].size;
 786        base = viadev->idx_table[idx].offset;
 787        res = base + size - count;
 788        if (res >= viadev->bufsize)
 789                res -= viadev->bufsize;
 790
 791        /* check the validity of the calculated position */
 792        if (size < count) {
 793                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 794                           (int)size, (int)count);
 795                res = viadev->lastpos;
 796        } else {
 797                if (! count) {
 798                        /* Some mobos report count = 0 on the DMA boundary,
 799                         * i.e. count = size indeed.
 800                         * Let's check whether this step is above the expected size.
 801                         */
 802                        int delta = res - viadev->lastpos;
 803                        if (delta < 0)
 804                                delta += viadev->bufsize;
 805                        if ((unsigned int)delta > viadev->fragsize)
 806                                res = base;
 807                }
 808                if (check_invalid_pos(viadev, res)) {
 809#ifdef POINTER_DEBUG
 810                        printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 811                               "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 812                               "count = 0x%x\n", idx, viadev->tbl_entries,
 813                               viadev->lastpos, viadev->bufsize2,
 814                               viadev->idx_table[idx].offset,
 815                               viadev->idx_table[idx].size, count);
 816#endif
 817                        /* count register returns full size when end of buffer is reached */
 818                        res = base + size;
 819                        if (check_invalid_pos(viadev, res)) {
 820                                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 821                                           "using last valid pointer\n");
 822                                res = viadev->lastpos;
 823                        }
 824                }
 825        }
 826        return res;
 827}
 828
 829/*
 830 * get the current pointer on via686
 831 */
 832static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 833{
 834        struct via82xx *chip = snd_pcm_substream_chip(substream);
 835        struct viadev *viadev = substream->runtime->private_data;
 836        unsigned int idx, ptr, count, res;
 837
 838        if (snd_BUG_ON(!viadev->tbl_entries))
 839                return 0;
 840        if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 841                return 0;
 842
 843        spin_lock(&chip->reg_lock);
 844        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 845        /* The via686a does not have the current index register,
 846         * so we need to calculate the index from CURR_PTR.
 847         */
 848        ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 849        if (ptr <= (unsigned int)viadev->table.addr)
 850                idx = 0;
 851        else /* CURR_PTR holds the address + 8 */
 852                idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 853        res = calc_linear_pos(viadev, idx, count);
 854        viadev->lastpos = res; /* remember the last position */
 855        spin_unlock(&chip->reg_lock);
 856
 857        return bytes_to_frames(substream->runtime, res);
 858}
 859
 860/*
 861 * get the current pointer on via823x
 862 */
 863static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 864{
 865        struct via82xx *chip = snd_pcm_substream_chip(substream);
 866        struct viadev *viadev = substream->runtime->private_data;
 867        unsigned int idx, count, res;
 868        int status;
 869        
 870        if (snd_BUG_ON(!viadev->tbl_entries))
 871                return 0;
 872
 873        spin_lock(&chip->reg_lock);
 874        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 875        status = viadev->in_interrupt;
 876        if (!status)
 877                status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 878
 879        /* An apparent bug in the 8251 is worked around by sending a 
 880         * REG_CTRL_START. */
 881        if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 882                snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 883
 884        if (!(status & VIA_REG_STAT_ACTIVE)) {
 885                res = 0;
 886                goto unlock;
 887        }
 888        if (count & 0xffffff) {
 889                idx = count >> 24;
 890                if (idx >= viadev->tbl_entries) {
 891#ifdef POINTER_DEBUG
 892                        printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 893                               viadev->tbl_entries);
 894#endif
 895                        res = viadev->lastpos;
 896                } else {
 897                        count &= 0xffffff;
 898                        res = calc_linear_pos(viadev, idx, count);
 899                }
 900        } else {
 901                res = viadev->hwptr_done;
 902                if (!viadev->in_interrupt) {
 903                        if (status & VIA_REG_STAT_EOL) {
 904                                res = 0;
 905                        } else
 906                                if (status & VIA_REG_STAT_FLAG) {
 907                                        res += viadev->fragsize;
 908                                }
 909                }
 910        }                           
 911unlock:
 912        viadev->lastpos = res;
 913        spin_unlock(&chip->reg_lock);
 914
 915        return bytes_to_frames(substream->runtime, res);
 916}
 917
 918
 919/*
 920 * hw_params callback:
 921 * allocate the buffer and build up the buffer description table
 922 */
 923static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 924                                 struct snd_pcm_hw_params *hw_params)
 925{
 926        struct via82xx *chip = snd_pcm_substream_chip(substream);
 927        struct viadev *viadev = substream->runtime->private_data;
 928        int err;
 929
 930        err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 931        if (err < 0)
 932                return err;
 933        err = build_via_table(viadev, substream, chip->pci,
 934                              params_periods(hw_params),
 935                              params_period_bytes(hw_params));
 936        if (err < 0)
 937                return err;
 938
 939        return 0;
 940}
 941
 942/*
 943 * hw_free callback:
 944 * clean up the buffer description table and release the buffer
 945 */
 946static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 947{
 948        struct via82xx *chip = snd_pcm_substream_chip(substream);
 949        struct viadev *viadev = substream->runtime->private_data;
 950
 951        clean_via_table(viadev, substream, chip->pci);
 952        snd_pcm_lib_free_pages(substream);
 953        return 0;
 954}
 955
 956
 957/*
 958 * set up the table pointer
 959 */
 960static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 961{
 962        snd_via82xx_codec_ready(chip, 0);
 963        outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 964        udelay(20);
 965        snd_via82xx_codec_ready(chip, 0);
 966}
 967
 968/*
 969 * prepare callback for playback and capture on via686
 970 */
 971static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 972                                struct snd_pcm_runtime *runtime)
 973{
 974        snd_via82xx_channel_reset(chip, viadev);
 975        /* this must be set after channel_reset */
 976        snd_via82xx_set_table_ptr(chip, viadev);
 977        outb(VIA_REG_TYPE_AUTOSTART |
 978             (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 979             (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 980             ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 981             VIA_REG_TYPE_INT_EOL |
 982             VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 983}
 984
 985static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 986{
 987        struct via82xx *chip = snd_pcm_substream_chip(substream);
 988        struct viadev *viadev = substream->runtime->private_data;
 989        struct snd_pcm_runtime *runtime = substream->runtime;
 990
 991        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 992        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 993        via686_setup_format(chip, viadev, runtime);
 994        return 0;
 995}
 996
 997static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 998{
 999        struct via82xx *chip = snd_pcm_substream_chip(substream);
1000        struct viadev *viadev = substream->runtime->private_data;
1001        struct snd_pcm_runtime *runtime = substream->runtime;
1002
1003        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1004        via686_setup_format(chip, viadev, runtime);
1005        return 0;
1006}
1007
1008/*
1009 * lock the current rate
1010 */
1011static int via_lock_rate(struct via_rate_lock *rec, int rate)
1012{
1013        int changed = 0;
1014
1015        spin_lock_irq(&rec->lock);
1016        if (rec->rate != rate) {
1017                if (rec->rate && rec->used > 1) /* already set */
1018                        changed = -EINVAL;
1019                else {
1020                        rec->rate = rate;
1021                        changed = 1;
1022                }
1023        }
1024        spin_unlock_irq(&rec->lock);
1025        return changed;
1026}
1027
1028/*
1029 * prepare callback for DSX playback on via823x
1030 */
1031static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1032{
1033        struct via82xx *chip = snd_pcm_substream_chip(substream);
1034        struct viadev *viadev = substream->runtime->private_data;
1035        struct snd_pcm_runtime *runtime = substream->runtime;
1036        int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1037        int rate_changed;
1038        u32 rbits;
1039
1040        if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1041                return rate_changed;
1042        if (rate_changed)
1043                snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1044                                  chip->no_vra ? 48000 : runtime->rate);
1045        if (chip->spdif_on && viadev->reg_offset == 0x30)
1046                snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1047
1048        if (runtime->rate == 48000)
1049                rbits = 0xfffff;
1050        else
1051                rbits = (0x100000 / 48000) * runtime->rate +
1052                        ((0x100000 % 48000) * runtime->rate) / 48000;
1053        snd_BUG_ON(rbits & ~0xfffff);
1054        snd_via82xx_channel_reset(chip, viadev);
1055        snd_via82xx_set_table_ptr(chip, viadev);
1056        outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1057             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1058        outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1059             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1060        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1061             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1062             rbits | /* rate */
1063             0xff000000,    /* STOP index is never reached */
1064             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1065        udelay(20);
1066        snd_via82xx_codec_ready(chip, 0);
1067        return 0;
1068}
1069
1070/*
1071 * prepare callback for multi-channel playback on via823x
1072 */
1073static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1074{
1075        struct via82xx *chip = snd_pcm_substream_chip(substream);
1076        struct viadev *viadev = substream->runtime->private_data;
1077        struct snd_pcm_runtime *runtime = substream->runtime;
1078        unsigned int slots;
1079        int fmt;
1080
1081        if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1082                return -EINVAL;
1083        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1084        snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1085        snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1086        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1087        snd_via82xx_channel_reset(chip, viadev);
1088        snd_via82xx_set_table_ptr(chip, viadev);
1089
1090        fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1091                VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1092        fmt |= runtime->channels << 4;
1093        outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1094#if 0
1095        if (chip->revision == VIA_REV_8233A)
1096                slots = 0;
1097        else
1098#endif
1099        {
1100                /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1101                /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1102                switch (runtime->channels) {
1103                case 1: slots = (1<<0) | (1<<4); break;
1104                case 2: slots = (1<<0) | (2<<4); break;
1105                case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1106                case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1107                case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1108                case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1109                default: slots = 0; break;
1110                }
1111        }
1112        /* STOP index is never reached */
1113        outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1114        udelay(20);
1115        snd_via82xx_codec_ready(chip, 0);
1116        return 0;
1117}
1118
1119/*
1120 * prepare callback for capture on via823x
1121 */
1122static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1123{
1124        struct via82xx *chip = snd_pcm_substream_chip(substream);
1125        struct viadev *viadev = substream->runtime->private_data;
1126        struct snd_pcm_runtime *runtime = substream->runtime;
1127
1128        if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1129                return -EINVAL;
1130        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1131        snd_via82xx_channel_reset(chip, viadev);
1132        snd_via82xx_set_table_ptr(chip, viadev);
1133        outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1134        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1135             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1136             0xff000000,    /* STOP index is never reached */
1137             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1138        udelay(20);
1139        snd_via82xx_codec_ready(chip, 0);
1140        return 0;
1141}
1142
1143
1144/*
1145 * pcm hardware definition, identical for both playback and capture
1146 */
1147static struct snd_pcm_hardware snd_via82xx_hw =
1148{
1149        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1150                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1151                                 SNDRV_PCM_INFO_MMAP_VALID |
1152                                 /* SNDRV_PCM_INFO_RESUME | */
1153                                 SNDRV_PCM_INFO_PAUSE),
1154        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1155        .rates =                SNDRV_PCM_RATE_48000,
1156        .rate_min =             48000,
1157        .rate_max =             48000,
1158        .channels_min =         1,
1159        .channels_max =         2,
1160        .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1161        .period_bytes_min =     32,
1162        .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1163        .periods_min =          2,
1164        .periods_max =          VIA_TABLE_SIZE / 2,
1165        .fifo_size =            0,
1166};
1167
1168
1169/*
1170 * open callback skeleton
1171 */
1172static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1173                                struct snd_pcm_substream *substream)
1174{
1175        struct snd_pcm_runtime *runtime = substream->runtime;
1176        int err;
1177        struct via_rate_lock *ratep;
1178        bool use_src = false;
1179
1180        runtime->hw = snd_via82xx_hw;
1181        
1182        /* set the hw rate condition */
1183        ratep = &chip->rates[viadev->direction];
1184        spin_lock_irq(&ratep->lock);
1185        ratep->used++;
1186        if (chip->spdif_on && viadev->reg_offset == 0x30) {
1187                /* DXS#3 and spdif is on */
1188                runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1189                snd_pcm_limit_hw_rates(runtime);
1190        } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1191                /* fixed DXS playback rate */
1192                runtime->hw.rates = SNDRV_PCM_RATE_48000;
1193                runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1194        } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1195                /* use full SRC capabilities of DXS */
1196                runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1197                                     SNDRV_PCM_RATE_8000_48000);
1198                runtime->hw.rate_min = 8000;
1199                runtime->hw.rate_max = 48000;
1200                use_src = true;
1201        } else if (! ratep->rate) {
1202                int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1203                runtime->hw.rates = chip->ac97->rates[idx];
1204                snd_pcm_limit_hw_rates(runtime);
1205        } else {
1206                /* a fixed rate */
1207                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1208                runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1209        }
1210        spin_unlock_irq(&ratep->lock);
1211
1212        /* we may remove following constaint when we modify table entries
1213           in interrupt */
1214        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1215                return err;
1216
1217        if (use_src) {
1218                err = snd_pcm_hw_rule_noresample(runtime, 48000);
1219                if (err < 0)
1220                        return err;
1221        }
1222
1223        runtime->private_data = viadev;
1224        viadev->substream = substream;
1225
1226        return 0;
1227}
1228
1229
1230/*
1231 * open callback for playback on via686
1232 */
1233static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1234{
1235        struct via82xx *chip = snd_pcm_substream_chip(substream);
1236        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1237        int err;
1238
1239        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1240                return err;
1241        return 0;
1242}
1243
1244/*
1245 * open callback for playback on via823x DXS
1246 */
1247static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1248{
1249        struct via82xx *chip = snd_pcm_substream_chip(substream);
1250        struct viadev *viadev;
1251        unsigned int stream;
1252        int err;
1253
1254        viadev = &chip->devs[chip->playback_devno + substream->number];
1255        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1256                return err;
1257        stream = viadev->reg_offset / 0x10;
1258        if (chip->dxs_controls[stream]) {
1259                chip->playback_volume[stream][0] =
1260                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1261                chip->playback_volume[stream][1] =
1262                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1263                chip->dxs_controls[stream]->vd[0].access &=
1264                        ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1265                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1266                               SNDRV_CTL_EVENT_MASK_INFO,
1267                               &chip->dxs_controls[stream]->id);
1268        }
1269        return 0;
1270}
1271
1272/*
1273 * open callback for playback on via823x multi-channel
1274 */
1275static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1276{
1277        struct via82xx *chip = snd_pcm_substream_chip(substream);
1278        struct viadev *viadev = &chip->devs[chip->multi_devno];
1279        int err;
1280        /* channels constraint for VIA8233A
1281         * 3 and 5 channels are not supported
1282         */
1283        static unsigned int channels[] = {
1284                1, 2, 4, 6
1285        };
1286        static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1287                .count = ARRAY_SIZE(channels),
1288                .list = channels,
1289                .mask = 0,
1290        };
1291
1292        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1293                return err;
1294        substream->runtime->hw.channels_max = 6;
1295        if (chip->revision == VIA_REV_8233A)
1296                snd_pcm_hw_constraint_list(substream->runtime, 0,
1297                                           SNDRV_PCM_HW_PARAM_CHANNELS,
1298                                           &hw_constraints_channels);
1299        return 0;
1300}
1301
1302/*
1303 * open callback for capture on via686 and via823x
1304 */
1305static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1306{
1307        struct via82xx *chip = snd_pcm_substream_chip(substream);
1308        struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1309
1310        return snd_via82xx_pcm_open(chip, viadev, substream);
1311}
1312
1313/*
1314 * close callback
1315 */
1316static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1317{
1318        struct via82xx *chip = snd_pcm_substream_chip(substream);
1319        struct viadev *viadev = substream->runtime->private_data;
1320        struct via_rate_lock *ratep;
1321
1322        /* release the rate lock */
1323        ratep = &chip->rates[viadev->direction];
1324        spin_lock_irq(&ratep->lock);
1325        ratep->used--;
1326        if (! ratep->used)
1327                ratep->rate = 0;
1328        spin_unlock_irq(&ratep->lock);
1329        if (! ratep->rate) {
1330                if (! viadev->direction) {
1331                        snd_ac97_update_power(chip->ac97,
1332                                              AC97_PCM_FRONT_DAC_RATE, 0);
1333                        snd_ac97_update_power(chip->ac97,
1334                                              AC97_PCM_SURR_DAC_RATE, 0);
1335                        snd_ac97_update_power(chip->ac97,
1336                                              AC97_PCM_LFE_DAC_RATE, 0);
1337                } else
1338                        snd_ac97_update_power(chip->ac97,
1339                                              AC97_PCM_LR_ADC_RATE, 0);
1340        }
1341        viadev->substream = NULL;
1342        return 0;
1343}
1344
1345static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1346{
1347        struct via82xx *chip = snd_pcm_substream_chip(substream);
1348        struct viadev *viadev = substream->runtime->private_data;
1349        unsigned int stream;
1350
1351        stream = viadev->reg_offset / 0x10;
1352        if (chip->dxs_controls[stream]) {
1353                chip->dxs_controls[stream]->vd[0].access |=
1354                        SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1355                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1356                               &chip->dxs_controls[stream]->id);
1357        }
1358        return snd_via82xx_pcm_close(substream);
1359}
1360
1361
1362/* via686 playback callbacks */
1363static struct snd_pcm_ops snd_via686_playback_ops = {
1364        .open =         snd_via686_playback_open,
1365        .close =        snd_via82xx_pcm_close,
1366        .ioctl =        snd_pcm_lib_ioctl,
1367        .hw_params =    snd_via82xx_hw_params,
1368        .hw_free =      snd_via82xx_hw_free,
1369        .prepare =      snd_via686_playback_prepare,
1370        .trigger =      snd_via82xx_pcm_trigger,
1371        .pointer =      snd_via686_pcm_pointer,
1372        .page =         snd_pcm_sgbuf_ops_page,
1373};
1374
1375/* via686 capture callbacks */
1376static struct snd_pcm_ops snd_via686_capture_ops = {
1377        .open =         snd_via82xx_capture_open,
1378        .close =        snd_via82xx_pcm_close,
1379        .ioctl =        snd_pcm_lib_ioctl,
1380        .hw_params =    snd_via82xx_hw_params,
1381        .hw_free =      snd_via82xx_hw_free,
1382        .prepare =      snd_via686_capture_prepare,
1383        .trigger =      snd_via82xx_pcm_trigger,
1384        .pointer =      snd_via686_pcm_pointer,
1385        .page =         snd_pcm_sgbuf_ops_page,
1386};
1387
1388/* via823x DSX playback callbacks */
1389static struct snd_pcm_ops snd_via8233_playback_ops = {
1390        .open =         snd_via8233_playback_open,
1391        .close =        snd_via8233_playback_close,
1392        .ioctl =        snd_pcm_lib_ioctl,
1393        .hw_params =    snd_via82xx_hw_params,
1394        .hw_free =      snd_via82xx_hw_free,
1395        .prepare =      snd_via8233_playback_prepare,
1396        .trigger =      snd_via82xx_pcm_trigger,
1397        .pointer =      snd_via8233_pcm_pointer,
1398        .page =         snd_pcm_sgbuf_ops_page,
1399};
1400
1401/* via823x multi-channel playback callbacks */
1402static struct snd_pcm_ops snd_via8233_multi_ops = {
1403        .open =         snd_via8233_multi_open,
1404        .close =        snd_via82xx_pcm_close,
1405        .ioctl =        snd_pcm_lib_ioctl,
1406        .hw_params =    snd_via82xx_hw_params,
1407        .hw_free =      snd_via82xx_hw_free,
1408        .prepare =      snd_via8233_multi_prepare,
1409        .trigger =      snd_via82xx_pcm_trigger,
1410        .pointer =      snd_via8233_pcm_pointer,
1411        .page =         snd_pcm_sgbuf_ops_page,
1412};
1413
1414/* via823x capture callbacks */
1415static struct snd_pcm_ops snd_via8233_capture_ops = {
1416        .open =         snd_via82xx_capture_open,
1417        .close =        snd_via82xx_pcm_close,
1418        .ioctl =        snd_pcm_lib_ioctl,
1419        .hw_params =    snd_via82xx_hw_params,
1420        .hw_free =      snd_via82xx_hw_free,
1421        .prepare =      snd_via8233_capture_prepare,
1422        .trigger =      snd_via82xx_pcm_trigger,
1423        .pointer =      snd_via8233_pcm_pointer,
1424        .page =         snd_pcm_sgbuf_ops_page,
1425};
1426
1427
1428static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1429                        int shadow_pos, int direction)
1430{
1431        chip->devs[idx].reg_offset = reg_offset;
1432        chip->devs[idx].shadow_shift = shadow_pos * 4;
1433        chip->devs[idx].direction = direction;
1434        chip->devs[idx].port = chip->port + reg_offset;
1435}
1436
1437/*
1438 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1439 */
1440static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1441{
1442        struct snd_pcm *pcm;
1443        int i, err;
1444
1445        chip->playback_devno = 0;       /* x 4 */
1446        chip->multi_devno = 4;          /* x 1 */
1447        chip->capture_devno = 5;        /* x 2 */
1448        chip->num_devs = 7;
1449        chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1450
1451        /* PCM #0:  4 DSX playbacks and 1 capture */
1452        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1453        if (err < 0)
1454                return err;
1455        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1456        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1457        pcm->private_data = chip;
1458        strcpy(pcm->name, chip->card->shortname);
1459        chip->pcms[0] = pcm;
1460        /* set up playbacks */
1461        for (i = 0; i < 4; i++)
1462                init_viadev(chip, i, 0x10 * i, i, 0);
1463        /* capture */
1464        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1465
1466        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1467                                              snd_dma_pci_data(chip->pci),
1468                                              64*1024, VIA_MAX_BUFSIZE);
1469
1470        /* PCM #1:  multi-channel playback and 2nd capture */
1471        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1472        if (err < 0)
1473                return err;
1474        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1475        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1476        pcm->private_data = chip;
1477        strcpy(pcm->name, chip->card->shortname);
1478        chip->pcms[1] = pcm;
1479        /* set up playback */
1480        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1481        /* set up capture */
1482        init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1483
1484        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1485                                              snd_dma_pci_data(chip->pci),
1486                                              64*1024, VIA_MAX_BUFSIZE);
1487        return 0;
1488}
1489
1490/*
1491 * create pcm instances for VIA8233A
1492 */
1493static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1494{
1495        struct snd_pcm *pcm;
1496        int err;
1497
1498        chip->multi_devno = 0;
1499        chip->playback_devno = 1;
1500        chip->capture_devno = 2;
1501        chip->num_devs = 3;
1502        chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1503
1504        /* PCM #0:  multi-channel playback and capture */
1505        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1506        if (err < 0)
1507                return err;
1508        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1509        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1510        pcm->private_data = chip;
1511        strcpy(pcm->name, chip->card->shortname);
1512        chip->pcms[0] = pcm;
1513        /* set up playback */
1514        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1515        /* capture */
1516        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1517
1518        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1519                                              snd_dma_pci_data(chip->pci),
1520                                              64*1024, VIA_MAX_BUFSIZE);
1521
1522        /* SPDIF supported? */
1523        if (! ac97_can_spdif(chip->ac97))
1524                return 0;
1525
1526        /* PCM #1:  DXS3 playback (for spdif) */
1527        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1528        if (err < 0)
1529                return err;
1530        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1531        pcm->private_data = chip;
1532        strcpy(pcm->name, chip->card->shortname);
1533        chip->pcms[1] = pcm;
1534        /* set up playback */
1535        init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1536
1537        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1538                                              snd_dma_pci_data(chip->pci),
1539                                              64*1024, VIA_MAX_BUFSIZE);
1540        return 0;
1541}
1542
1543/*
1544 * create a pcm instance for via686a/b
1545 */
1546static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1547{
1548        struct snd_pcm *pcm;
1549        int err;
1550
1551        chip->playback_devno = 0;
1552        chip->capture_devno = 1;
1553        chip->num_devs = 2;
1554        chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1555
1556        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1557        if (err < 0)
1558                return err;
1559        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1560        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1561        pcm->private_data = chip;
1562        strcpy(pcm->name, chip->card->shortname);
1563        chip->pcms[0] = pcm;
1564        init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1565        init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1566
1567        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1568                                              snd_dma_pci_data(chip->pci),
1569                                              64*1024, VIA_MAX_BUFSIZE);
1570        return 0;
1571}
1572
1573
1574/*
1575 *  Mixer part
1576 */
1577
1578static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1579                                           struct snd_ctl_elem_info *uinfo)
1580{
1581        /* formerly they were "Line" and "Mic", but it looks like that they
1582         * have nothing to do with the actual physical connections...
1583         */
1584        static char *texts[2] = {
1585                "Input1", "Input2"
1586        };
1587        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1588        uinfo->count = 1;
1589        uinfo->value.enumerated.items = 2;
1590        if (uinfo->value.enumerated.item >= 2)
1591                uinfo->value.enumerated.item = 1;
1592        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1593        return 0;
1594}
1595
1596static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1597                                          struct snd_ctl_elem_value *ucontrol)
1598{
1599        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1600        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1601        ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1602        return 0;
1603}
1604
1605static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1606                                          struct snd_ctl_elem_value *ucontrol)
1607{
1608        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1609        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1610        u8 val, oval;
1611
1612        spin_lock_irq(&chip->reg_lock);
1613        oval = inb(port);
1614        val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1615        if (ucontrol->value.enumerated.item[0])
1616                val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1617        if (val != oval)
1618                outb(val, port);
1619        spin_unlock_irq(&chip->reg_lock);
1620        return val != oval;
1621}
1622
1623static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1624        .name = "Input Source Select",
1625        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1626        .info = snd_via8233_capture_source_info,
1627        .get = snd_via8233_capture_source_get,
1628        .put = snd_via8233_capture_source_put,
1629};
1630
1631#define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1632
1633static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1634                                      struct snd_ctl_elem_value *ucontrol)
1635{
1636        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1637        u8 val;
1638
1639        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1640        ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1641        return 0;
1642}
1643
1644static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1645                                      struct snd_ctl_elem_value *ucontrol)
1646{
1647        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1648        u8 val, oval;
1649
1650        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1651        val = oval & ~VIA8233_SPDIF_DX3;
1652        if (ucontrol->value.integer.value[0])
1653                val |= VIA8233_SPDIF_DX3;
1654        /* save the spdif flag for rate filtering */
1655        chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1656        if (val != oval) {
1657                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1658                return 1;
1659        }
1660        return 0;
1661}
1662
1663static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1664        .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1665        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1666        .info = snd_via8233_dxs3_spdif_info,
1667        .get = snd_via8233_dxs3_spdif_get,
1668        .put = snd_via8233_dxs3_spdif_put,
1669};
1670
1671static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1672                                       struct snd_ctl_elem_info *uinfo)
1673{
1674        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1675        uinfo->count = 2;
1676        uinfo->value.integer.min = 0;
1677        uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1678        return 0;
1679}
1680
1681static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1682                                      struct snd_ctl_elem_value *ucontrol)
1683{
1684        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1685        unsigned int idx = kcontrol->id.subdevice;
1686
1687        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1688        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1689        return 0;
1690}
1691
1692static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1693                                         struct snd_ctl_elem_value *ucontrol)
1694{
1695        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1696        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1697        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1698        return 0;
1699}
1700
1701static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1702                                      struct snd_ctl_elem_value *ucontrol)
1703{
1704        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1705        unsigned int idx = kcontrol->id.subdevice;
1706        unsigned long port = chip->port + 0x10 * idx;
1707        unsigned char val;
1708        int i, change = 0;
1709
1710        for (i = 0; i < 2; i++) {
1711                val = ucontrol->value.integer.value[i];
1712                if (val > VIA_DXS_MAX_VOLUME)
1713                        val = VIA_DXS_MAX_VOLUME;
1714                val = VIA_DXS_MAX_VOLUME - val;
1715                change |= val != chip->playback_volume[idx][i];
1716                if (change) {
1717                        chip->playback_volume[idx][i] = val;
1718                        outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1719                }
1720        }
1721        return change;
1722}
1723
1724static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1725                                         struct snd_ctl_elem_value *ucontrol)
1726{
1727        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1728        unsigned int idx;
1729        unsigned char val;
1730        int i, change = 0;
1731
1732        for (i = 0; i < 2; i++) {
1733                val = ucontrol->value.integer.value[i];
1734                if (val > VIA_DXS_MAX_VOLUME)
1735                        val = VIA_DXS_MAX_VOLUME;
1736                val = VIA_DXS_MAX_VOLUME - val;
1737                if (val != chip->playback_volume_c[i]) {
1738                        change = 1;
1739                        chip->playback_volume_c[i] = val;
1740                        for (idx = 0; idx < 4; idx++) {
1741                                unsigned long port = chip->port + 0x10 * idx;
1742                                chip->playback_volume[idx][i] = val;
1743                                outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1744                        }
1745                }
1746        }
1747        return change;
1748}
1749
1750static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1751
1752static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1753        .name = "PCM Playback Volume",
1754        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1755        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1756                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1757        .info = snd_via8233_dxs_volume_info,
1758        .get = snd_via8233_pcmdxs_volume_get,
1759        .put = snd_via8233_pcmdxs_volume_put,
1760        .tlv = { .p = db_scale_dxs }
1761};
1762
1763static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1764        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1765        .device = 0,
1766        /* .subdevice set later */
1767        .name = "PCM Playback Volume",
1768        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1769                  SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1770                  SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1771        .info = snd_via8233_dxs_volume_info,
1772        .get = snd_via8233_dxs_volume_get,
1773        .put = snd_via8233_dxs_volume_put,
1774        .tlv = { .p = db_scale_dxs }
1775};
1776
1777/*
1778 */
1779
1780static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1781{
1782        struct via82xx *chip = bus->private_data;
1783        chip->ac97_bus = NULL;
1784}
1785
1786static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1787{
1788        struct via82xx *chip = ac97->private_data;
1789        chip->ac97 = NULL;
1790}
1791
1792static struct ac97_quirk ac97_quirks[] = {
1793        {
1794                .subvendor = 0x1106,
1795                .subdevice = 0x4161,
1796                .codec_id = 0x56494161, /* VT1612A */
1797                .name = "Soltek SL-75DRV5",
1798                .type = AC97_TUNE_NONE
1799        },
1800        {       /* FIXME: which codec? */
1801                .subvendor = 0x1106,
1802                .subdevice = 0x4161,
1803                .name = "ASRock K7VT2",
1804                .type = AC97_TUNE_HP_ONLY
1805        },
1806        {
1807                .subvendor = 0x110a,
1808                .subdevice = 0x0079,
1809                .name = "Fujitsu Siemens D1289",
1810                .type = AC97_TUNE_HP_ONLY
1811        },
1812        {
1813                .subvendor = 0x1019,
1814                .subdevice = 0x0a81,
1815                .name = "ECS K7VTA3",
1816                .type = AC97_TUNE_HP_ONLY
1817        },
1818        {
1819                .subvendor = 0x1019,
1820                .subdevice = 0x0a85,
1821                .name = "ECS L7VMM2",
1822                .type = AC97_TUNE_HP_ONLY
1823        },
1824        {
1825                .subvendor = 0x1019,
1826                .subdevice = 0x1841,
1827                .name = "ECS K7VTA3",
1828                .type = AC97_TUNE_HP_ONLY
1829        },
1830        {
1831                .subvendor = 0x1849,
1832                .subdevice = 0x3059,
1833                .name = "ASRock K7VM2",
1834                .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1835        },
1836        {
1837                .subvendor = 0x14cd,
1838                .subdevice = 0x7002,
1839                .name = "Unknown",
1840                .type = AC97_TUNE_ALC_JACK
1841        },
1842        {
1843                .subvendor = 0x1071,
1844                .subdevice = 0x8590,
1845                .name = "Mitac Mobo",
1846                .type = AC97_TUNE_ALC_JACK
1847        },
1848        {
1849                .subvendor = 0x161f,
1850                .subdevice = 0x202b,
1851                .name = "Arima Notebook",
1852                .type = AC97_TUNE_HP_ONLY,
1853        },
1854        {
1855                .subvendor = 0x161f,
1856                .subdevice = 0x2032,
1857                .name = "Targa Traveller 811",
1858                .type = AC97_TUNE_HP_ONLY,
1859        },
1860        {
1861                .subvendor = 0x161f,
1862                .subdevice = 0x2032,
1863                .name = "m680x",
1864                .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1865        },
1866        {
1867                .subvendor = 0x1297,
1868                .subdevice = 0xa232,
1869                .name = "Shuttle AK32VN",
1870                .type = AC97_TUNE_HP_ONLY
1871        },
1872        { } /* terminator */
1873};
1874
1875static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1876{
1877        struct snd_ac97_template ac97;
1878        int err;
1879        static struct snd_ac97_bus_ops ops = {
1880                .write = snd_via82xx_codec_write,
1881                .read = snd_via82xx_codec_read,
1882                .wait = snd_via82xx_codec_wait,
1883        };
1884
1885        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1886                return err;
1887        chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1888        chip->ac97_bus->clock = chip->ac97_clock;
1889
1890        memset(&ac97, 0, sizeof(ac97));
1891        ac97.private_data = chip;
1892        ac97.private_free = snd_via82xx_mixer_free_ac97;
1893        ac97.pci = chip->pci;
1894        ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1895        if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1896                return err;
1897
1898        snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1899
1900        if (chip->chip_type != TYPE_VIA686) {
1901                /* use slot 10/11 */
1902                snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1903        }
1904
1905        return 0;
1906}
1907
1908#ifdef SUPPORT_JOYSTICK
1909#define JOYSTICK_ADDR   0x200
1910static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1911{
1912        struct gameport *gp;
1913        struct resource *r;
1914
1915        if (!joystick)
1916                return -ENODEV;
1917
1918        r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1919        if (!r) {
1920                printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1921                       JOYSTICK_ADDR);
1922                return -EBUSY;
1923        }
1924
1925        chip->gameport = gp = gameport_allocate_port();
1926        if (!gp) {
1927                printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1928                release_and_free_resource(r);
1929                return -ENOMEM;
1930        }
1931
1932        gameport_set_name(gp, "VIA686 Gameport");
1933        gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1934        gameport_set_dev_parent(gp, &chip->pci->dev);
1935        gp->io = JOYSTICK_ADDR;
1936        gameport_set_port_data(gp, r);
1937
1938        /* Enable legacy joystick port */
1939        *legacy |= VIA_FUNC_ENABLE_GAME;
1940        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1941
1942        gameport_register_port(chip->gameport);
1943
1944        return 0;
1945}
1946
1947static void snd_via686_free_gameport(struct via82xx *chip)
1948{
1949        if (chip->gameport) {
1950                struct resource *r = gameport_get_port_data(chip->gameport);
1951
1952                gameport_unregister_port(chip->gameport);
1953                chip->gameport = NULL;
1954                release_and_free_resource(r);
1955        }
1956}
1957#else
1958static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1959{
1960        return -ENOSYS;
1961}
1962static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1963#endif
1964
1965
1966/*
1967 *
1968 */
1969
1970static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1971{
1972        int i, err, caps;
1973        unsigned char val;
1974
1975        caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1976        for (i = 0; i < caps; i++) {
1977                snd_via8233_capture_source.index = i;
1978                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1979                if (err < 0)
1980                        return err;
1981        }
1982        if (ac97_can_spdif(chip->ac97)) {
1983                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1984                if (err < 0)
1985                        return err;
1986        }
1987        if (chip->chip_type != TYPE_VIA8233A) {
1988                /* when no h/w PCM volume control is found, use DXS volume control
1989                 * as the PCM vol control
1990                 */
1991                struct snd_ctl_elem_id sid;
1992                memset(&sid, 0, sizeof(sid));
1993                strcpy(sid.name, "PCM Playback Volume");
1994                sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1995                if (! snd_ctl_find_id(chip->card, &sid)) {
1996                        snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1997                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1998                        if (err < 0)
1999                                return err;
2000                }
2001                else /* Using DXS when PCM emulation is enabled is really weird */
2002                {
2003                        for (i = 0; i < 4; ++i) {
2004                                struct snd_kcontrol *kctl;
2005
2006                                kctl = snd_ctl_new1(
2007                                        &snd_via8233_dxs_volume_control, chip);
2008                                if (!kctl)
2009                                        return -ENOMEM;
2010                                kctl->id.subdevice = i;
2011                                err = snd_ctl_add(chip->card, kctl);
2012                                if (err < 0)
2013                                        return err;
2014                                chip->dxs_controls[i] = kctl;
2015                        }
2016                }
2017        }
2018        /* select spdif data slot 10/11 */
2019        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2020        val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2021        val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2022        pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2023
2024        return 0;
2025}
2026
2027static int __devinit snd_via686_init_misc(struct via82xx *chip)
2028{
2029        unsigned char legacy, legacy_cfg;
2030        int rev_h = 0;
2031
2032        legacy = chip->old_legacy;
2033        legacy_cfg = chip->old_legacy_cfg;
2034        legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2035        legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2036        if (chip->revision >= VIA_REV_686_H) {
2037                rev_h = 1;
2038                if (mpu_port >= 0x200) {        /* force MIDI */
2039                        mpu_port &= 0xfffc;
2040                        pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2041#ifdef CONFIG_PM
2042                        chip->mpu_port_saved = mpu_port;
2043#endif
2044                } else {
2045                        mpu_port = pci_resource_start(chip->pci, 2);
2046                }
2047        } else {
2048                switch (mpu_port) {     /* force MIDI */
2049                case 0x300:
2050                case 0x310:
2051                case 0x320:
2052                case 0x330:
2053                        legacy_cfg &= ~(3 << 2);
2054                        legacy_cfg |= (mpu_port & 0x0030) >> 2;
2055                        break;
2056                default:                        /* no, use BIOS settings */
2057                        if (legacy & VIA_FUNC_ENABLE_MIDI)
2058                                mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2059                        break;
2060                }
2061        }
2062        if (mpu_port >= 0x200 &&
2063            (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2064            != NULL) {
2065                if (rev_h)
2066                        legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2067                legacy |= VIA_FUNC_ENABLE_MIDI;
2068        } else {
2069                if (rev_h)
2070                        legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2071                legacy &= ~VIA_FUNC_ENABLE_MIDI;
2072                mpu_port = 0;
2073        }
2074
2075        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2076        pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2077        if (chip->mpu_res) {
2078                if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2079                                        mpu_port, MPU401_INFO_INTEGRATED |
2080                                        MPU401_INFO_IRQ_HOOK, -1,
2081                                        &chip->rmidi) < 0) {
2082                        printk(KERN_WARNING "unable to initialize MPU-401"
2083                               " at 0x%lx, skipping\n", mpu_port);
2084                        legacy &= ~VIA_FUNC_ENABLE_MIDI;
2085                } else {
2086                        legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2087                }
2088                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2089        }
2090
2091        snd_via686_create_gameport(chip, &legacy);
2092
2093#ifdef CONFIG_PM
2094        chip->legacy_saved = legacy;
2095        chip->legacy_cfg_saved = legacy_cfg;
2096#endif
2097
2098        return 0;
2099}
2100
2101
2102/*
2103 * proc interface
2104 */
2105static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2106                                  struct snd_info_buffer *buffer)
2107{
2108        struct via82xx *chip = entry->private_data;
2109        int i;
2110        
2111        snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2112        for (i = 0; i < 0xa0; i += 4) {
2113                snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2114        }
2115}
2116
2117static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2118{
2119        struct snd_info_entry *entry;
2120
2121        if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2122                snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2123}
2124
2125/*
2126 *
2127 */
2128
2129static int snd_via82xx_chip_init(struct via82xx *chip)
2130{
2131        unsigned int val;
2132        unsigned long end_time;
2133        unsigned char pval;
2134
2135#if 0 /* broken on K7M? */
2136        if (chip->chip_type == TYPE_VIA686)
2137                /* disable all legacy ports */
2138                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2139#endif
2140        pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2141        if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2142                /* deassert ACLink reset, force SYNC */
2143                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2144                                      VIA_ACLINK_CTRL_ENABLE |
2145                                      VIA_ACLINK_CTRL_RESET |
2146                                      VIA_ACLINK_CTRL_SYNC);
2147                udelay(100);
2148#if 1 /* FIXME: should we do full reset here for all chip models? */
2149                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2150                udelay(100);
2151#else
2152                /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2153                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2154                                      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2155                udelay(2);
2156#endif
2157                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2158                /* note - FM data out has trouble with non VRA codecs !! */
2159                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2160                udelay(100);
2161        }
2162        
2163        /* Make sure VRA is enabled, in case we didn't do a
2164         * complete codec reset, above */
2165        pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2166        if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2167                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2168                /* note - FM data out has trouble with non VRA codecs !! */
2169                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2170                udelay(100);
2171        }
2172
2173        /* wait until codec ready */
2174        end_time = jiffies + msecs_to_jiffies(750);
2175        do {
2176                pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2177                if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2178                        break;
2179                schedule_timeout_uninterruptible(1);
2180        } while (time_before(jiffies, end_time));
2181
2182        if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2183                snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2184
2185#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2186        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2187                                 VIA_REG_AC97_SECONDARY_VALID |
2188                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2189        end_time = jiffies + msecs_to_jiffies(750);
2190        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2191                                 VIA_REG_AC97_SECONDARY_VALID |
2192                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2193        do {
2194                if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2195                        chip->ac97_secondary = 1;
2196                        goto __ac97_ok2;
2197                }
2198                schedule_timeout_uninterruptible(1);
2199        } while (time_before(jiffies, end_time));
2200        /* This is ok, the most of motherboards have only one codec */
2201
2202      __ac97_ok2:
2203#endif
2204
2205        if (chip->chip_type == TYPE_VIA686) {
2206                /* route FM trap to IRQ, disable FM trap */
2207                pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2208                /* disable all GPI interrupts */
2209                outl(0, VIAREG(chip, GPI_INTR));
2210        }
2211
2212        if (chip->chip_type != TYPE_VIA686) {
2213                /* Workaround for Award BIOS bug:
2214                 * DXS channels don't work properly with VRA if MC97 is disabled.
2215                 */
2216                struct pci_dev *pci;
2217                pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2218                if (pci) {
2219                        unsigned char data;
2220                        pci_read_config_byte(pci, 0x44, &data);
2221                        pci_write_config_byte(pci, 0x44, data | 0x40);
2222                        pci_dev_put(pci);
2223                }
2224        }
2225
2226        if (chip->chip_type != TYPE_VIA8233A) {
2227                int i, idx;
2228                for (idx = 0; idx < 4; idx++) {
2229                        unsigned long port = chip->port + 0x10 * idx;
2230                        for (i = 0; i < 2; i++) {
2231                                chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2232                                outb(chip->playback_volume_c[i],
2233                                     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2234                        }
2235                }
2236        }
2237
2238        return 0;
2239}
2240
2241#ifdef CONFIG_PM
2242/*
2243 * power management
2244 */
2245static int snd_via82xx_suspend(struct device *dev)
2246{
2247        struct pci_dev *pci = to_pci_dev(dev);
2248        struct snd_card *card = dev_get_drvdata(dev);
2249        struct via82xx *chip = card->private_data;
2250        int i;
2251
2252        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2253        for (i = 0; i < 2; i++)
2254                snd_pcm_suspend_all(chip->pcms[i]);
2255        for (i = 0; i < chip->num_devs; i++)
2256                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2257        synchronize_irq(chip->irq);
2258        snd_ac97_suspend(chip->ac97);
2259
2260        /* save misc values */
2261        if (chip->chip_type != TYPE_VIA686) {
2262                pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2263                chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2264                chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2265        }
2266
2267        pci_disable_device(pci);
2268        pci_save_state(pci);
2269        pci_set_power_state(pci, PCI_D3hot);
2270        return 0;
2271}
2272
2273static int snd_via82xx_resume(struct device *dev)
2274{
2275        struct pci_dev *pci = to_pci_dev(dev);
2276        struct snd_card *card = dev_get_drvdata(dev);
2277        struct via82xx *chip = card->private_data;
2278        int i;
2279
2280        pci_set_power_state(pci, PCI_D0);
2281        pci_restore_state(pci);
2282        if (pci_enable_device(pci) < 0) {
2283                printk(KERN_ERR "via82xx: pci_enable_device failed, "
2284                       "disabling device\n");
2285                snd_card_disconnect(card);
2286                return -EIO;
2287        }
2288        pci_set_master(pci);
2289
2290        snd_via82xx_chip_init(chip);
2291
2292        if (chip->chip_type == TYPE_VIA686) {
2293                if (chip->mpu_port_saved)
2294                        pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2295                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2296                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2297        } else {
2298                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2299                outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2300                outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2301        }
2302
2303        snd_ac97_resume(chip->ac97);
2304
2305        for (i = 0; i < chip->num_devs; i++)
2306                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2307
2308        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2309        return 0;
2310}
2311
2312static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2313#define SND_VIA82XX_PM_OPS      &snd_via82xx_pm
2314#else
2315#define SND_VIA82XX_PM_OPS      NULL
2316#endif /* CONFIG_PM */
2317
2318static int snd_via82xx_free(struct via82xx *chip)
2319{
2320        unsigned int i;
2321
2322        if (chip->irq < 0)
2323                goto __end_hw;
2324        /* disable interrupts */
2325        for (i = 0; i < chip->num_devs; i++)
2326                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2327
2328        if (chip->irq >= 0)
2329                free_irq(chip->irq, chip);
2330 __end_hw:
2331        release_and_free_resource(chip->mpu_res);
2332        pci_release_regions(chip->pci);
2333
2334        if (chip->chip_type == TYPE_VIA686) {
2335                snd_via686_free_gameport(chip);
2336                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2337                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2338        }
2339        pci_disable_device(chip->pci);
2340        kfree(chip);
2341        return 0;
2342}
2343
2344static int snd_via82xx_dev_free(struct snd_device *device)
2345{
2346        struct via82xx *chip = device->device_data;
2347        return snd_via82xx_free(chip);
2348}
2349
2350static int __devinit snd_via82xx_create(struct snd_card *card,
2351                                        struct pci_dev *pci,
2352                                        int chip_type,
2353                                        int revision,
2354                                        unsigned int ac97_clock,
2355                                        struct via82xx ** r_via)
2356{
2357        struct via82xx *chip;
2358        int err;
2359        static struct snd_device_ops ops = {
2360                .dev_free =     snd_via82xx_dev_free,
2361        };
2362
2363        if ((err = pci_enable_device(pci)) < 0)
2364                return err;
2365
2366        if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2367                pci_disable_device(pci);
2368                return -ENOMEM;
2369        }
2370
2371        chip->chip_type = chip_type;
2372        chip->revision = revision;
2373
2374        spin_lock_init(&chip->reg_lock);
2375        spin_lock_init(&chip->rates[0].lock);
2376        spin_lock_init(&chip->rates[1].lock);
2377        chip->card = card;
2378        chip->pci = pci;
2379        chip->irq = -1;
2380
2381        pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2382        pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2383        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2384                              chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2385
2386        if ((err = pci_request_regions(pci, card->driver)) < 0) {
2387                kfree(chip);
2388                pci_disable_device(pci);
2389                return err;
2390        }
2391        chip->port = pci_resource_start(pci, 0);
2392        if (request_irq(pci->irq,
2393                        chip_type == TYPE_VIA8233 ?
2394                        snd_via8233_interrupt : snd_via686_interrupt,
2395                        IRQF_SHARED,
2396                        KBUILD_MODNAME, chip)) {
2397                snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2398                snd_via82xx_free(chip);
2399                return -EBUSY;
2400        }
2401        chip->irq = pci->irq;
2402        if (ac97_clock >= 8000 && ac97_clock <= 48000)
2403                chip->ac97_clock = ac97_clock;
2404        synchronize_irq(chip->irq);
2405
2406        if ((err = snd_via82xx_chip_init(chip)) < 0) {
2407                snd_via82xx_free(chip);
2408                return err;
2409        }
2410
2411        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2412                snd_via82xx_free(chip);
2413                return err;
2414        }
2415
2416        /* The 8233 ac97 controller does not implement the master bit
2417         * in the pci command register. IMHO this is a violation of the PCI spec.
2418         * We call pci_set_master here because it does not hurt. */
2419        pci_set_master(pci);
2420
2421        snd_card_set_dev(card, &pci->dev);
2422
2423        *r_via = chip;
2424        return 0;
2425}
2426
2427struct via823x_info {
2428        int revision;
2429        char *name;
2430        int type;
2431};
2432static struct via823x_info via823x_cards[] __devinitdata = {
2433        { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2434        { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2435        { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2436        { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2437        { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2438        { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2439        { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2440};
2441
2442/*
2443 * auto detection of DXS channel supports.
2444 */
2445
2446static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2447        SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2448        SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2449        SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2450        SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2451        SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2452        SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2453        SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2454        SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2455        SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2456        SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2457        SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2458        SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2459        SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2460        SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2461        SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2462        SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2463        SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2464        SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2465        SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2466        SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2467        SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2468        SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2469        SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2470        SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2471        SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2472        SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2473        SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2474        SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2475        SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2476        SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2477        SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2478        SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2479        SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2480        SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2481        SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2482        SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2483        SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2484        SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2485        SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2486        SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2487        { } /* terminator */
2488};
2489
2490static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2491{
2492        const struct snd_pci_quirk *w;
2493
2494        w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2495        if (w) {
2496                snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2497                            w->name);
2498                return w->value;
2499        }
2500
2501        /* for newer revision, default to DXS_SRC */
2502        if (revision >= VIA_REV_8235)
2503                return VIA_DXS_SRC;
2504
2505        /*
2506         * not detected, try 48k rate only to be sure.
2507         */
2508        printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2509        printk(KERN_INFO "         Please try dxs_support=5 option\n");
2510        printk(KERN_INFO "         and report if it works on your machine.\n");
2511        printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2512        return VIA_DXS_48K;
2513};
2514
2515static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2516                                       const struct pci_device_id *pci_id)
2517{
2518        struct snd_card *card;
2519        struct via82xx *chip;
2520        int chip_type = 0, card_type;
2521        unsigned int i;
2522        int err;
2523
2524        err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2525        if (err < 0)
2526                return err;
2527
2528        card_type = pci_id->driver_data;
2529        switch (card_type) {
2530        case TYPE_CARD_VIA686:
2531                strcpy(card->driver, "VIA686A");
2532                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2533                chip_type = TYPE_VIA686;
2534                break;
2535        case TYPE_CARD_VIA8233:
2536                chip_type = TYPE_VIA8233;
2537                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2538                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2539                        if (pci->revision == via823x_cards[i].revision) {
2540                                chip_type = via823x_cards[i].type;
2541                                strcpy(card->shortname, via823x_cards[i].name);
2542                                break;
2543                        }
2544                }
2545                if (chip_type != TYPE_VIA8233A) {
2546                        if (dxs_support == VIA_DXS_AUTO)
2547                                dxs_support = check_dxs_list(pci, pci->revision);
2548                        /* force to use VIA8233 or 8233A model according to
2549                         * dxs_support module option
2550                         */
2551                        if (dxs_support == VIA_DXS_DISABLE)
2552                                chip_type = TYPE_VIA8233A;
2553                        else
2554                                chip_type = TYPE_VIA8233;
2555                }
2556                if (chip_type == TYPE_VIA8233A)
2557                        strcpy(card->driver, "VIA8233A");
2558                else if (pci->revision >= VIA_REV_8237)
2559                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
2560                else
2561                        strcpy(card->driver, "VIA8233");
2562                break;
2563        default:
2564                snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2565                err = -EINVAL;
2566                goto __error;
2567        }
2568                
2569        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2570                                      ac97_clock, &chip)) < 0)
2571                goto __error;
2572        card->private_data = chip;
2573        if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2574                goto __error;
2575
2576        if (chip_type == TYPE_VIA686) {
2577                if ((err = snd_via686_pcm_new(chip)) < 0 ||
2578                    (err = snd_via686_init_misc(chip)) < 0)
2579                        goto __error;
2580        } else {
2581                if (chip_type == TYPE_VIA8233A) {
2582                        if ((err = snd_via8233a_pcm_new(chip)) < 0)
2583                                goto __error;
2584                        // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2585                } else {
2586                        if ((err = snd_via8233_pcm_new(chip)) < 0)
2587                                goto __error;
2588                        if (dxs_support == VIA_DXS_48K)
2589                                chip->dxs_fixed = 1;
2590                        else if (dxs_support == VIA_DXS_NO_VRA)
2591                                chip->no_vra = 1;
2592                        else if (dxs_support == VIA_DXS_SRC) {
2593                                chip->no_vra = 1;
2594                                chip->dxs_src = 1;
2595                        }
2596                }
2597                if ((err = snd_via8233_init_misc(chip)) < 0)
2598                        goto __error;
2599        }
2600
2601        /* disable interrupts */
2602        for (i = 0; i < chip->num_devs; i++)
2603                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2604
2605        snprintf(card->longname, sizeof(card->longname),
2606                 "%s with %s at %#lx, irq %d", card->shortname,
2607                 snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2608
2609        snd_via82xx_proc_init(chip);
2610
2611        if ((err = snd_card_register(card)) < 0) {
2612                snd_card_free(card);
2613                return err;
2614        }
2615        pci_set_drvdata(pci, card);
2616        return 0;
2617
2618 __error:
2619        snd_card_free(card);
2620        return err;
2621}
2622
2623static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2624{
2625        snd_card_free(pci_get_drvdata(pci));
2626        pci_set_drvdata(pci, NULL);
2627}
2628
2629static struct pci_driver via82xx_driver = {
2630        .name = KBUILD_MODNAME,
2631        .id_table = snd_via82xx_ids,
2632        .probe = snd_via82xx_probe,
2633        .remove = __devexit_p(snd_via82xx_remove),
2634        .driver = {
2635                .pm = SND_VIA82XX_PM_OPS,
2636        },
2637};
2638
2639module_pci_driver(via82xx_driver);
2640
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