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/moduleparam.h>
  57#include <sound/core.h>
  58#include <sound/pcm.h>
  59#include <sound/pcm_params.h>
  60#include <sound/info.h>
  61#include <sound/tlv.h>
  62#include <sound/ac97_codec.h>
  63#include <sound/mpu401.h>
  64#include <sound/initval.h>
  65
  66#if 0
  67#define POINTER_DEBUG
  68#endif
  69
  70MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  71MODULE_DESCRIPTION("VIA VT82xx audio");
  72MODULE_LICENSE("GPL");
  73MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  74
  75#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
  76#define SUPPORT_JOYSTICK 1
  77#endif
  78
  79static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  80static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  81static long mpu_port;
  82#ifdef SUPPORT_JOYSTICK
  83static int joystick;
  84#endif
  85static int ac97_clock = 48000;
  86static char *ac97_quirk;
  87static int dxs_support;
  88
  89module_param(index, int, 0444);
  90MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  91module_param(id, charp, 0444);
  92MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  93module_param(mpu_port, long, 0444);
  94MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  95#ifdef SUPPORT_JOYSTICK
  96module_param(joystick, bool, 0444);
  97MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  98#endif
  99module_param(ac97_clock, int, 0444);
 100MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
 101module_param(ac97_quirk, charp, 0444);
 102MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
 103module_param(dxs_support, int, 0444);
 104MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
 105
 106/* just for backward compatibility */
 107static int enable;
 108module_param(enable, bool, 0444);
 109
 110
 111/* revision numbers for via686 */
 112#define VIA_REV_686_A           0x10
 113#define VIA_REV_686_B           0x11
 114#define VIA_REV_686_C           0x12
 115#define VIA_REV_686_D           0x13
 116#define VIA_REV_686_E           0x14
 117#define VIA_REV_686_H           0x20
 118
 119/* revision numbers for via8233 */
 120#define VIA_REV_PRE_8233        0x10    /* not in market */
 121#define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 122#define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 123#define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 124#define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 125#define VIA_REV_8237            0x60
 126#define VIA_REV_8251            0x70
 127
 128/*
 129 *  Direct registers
 130 */
 131
 132#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 133#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 134
 135/* common offsets */
 136#define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 137#define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 138#define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 139#define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 140#define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 141#define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 142#define   VIA_REG_STAT_EOL              0x02    /* RWC */
 143#define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 144#define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 145#define   VIA_REG_CTRL_START            0x80    /* WO */
 146#define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 147#define   VIA_REG_CTRL_AUTOSTART        0x20
 148#define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 149#define   VIA_REG_CTRL_INT_STOP         0x04            
 150#define   VIA_REG_CTRL_INT_EOL          0x02
 151#define   VIA_REG_CTRL_INT_FLAG         0x01
 152#define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 153#define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 154#define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 155#define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 156#define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 157#define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 158#define   VIA_REG_TYPE_INT_LLINE        0x00
 159#define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 160#define   VIA_REG_TYPE_INT_LESSONE      0x08
 161#define   VIA_REG_TYPE_INT_MASK         0x0c
 162#define   VIA_REG_TYPE_INT_EOL          0x02
 163#define   VIA_REG_TYPE_INT_FLAG         0x01
 164#define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 165#define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 166#define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 167#define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 168#define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 169#define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 170#define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 171
 172#define DEFINE_VIA_REGSET(name,val) \
 173enum {\
 174        VIA_REG_##name##_STATUS         = (val),\
 175        VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 176        VIA_REG_##name##_TYPE           = (val) + 0x02,\
 177        VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 178        VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 179        VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 180        VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 181}
 182
 183/* playback block */
 184DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 185DEFINE_VIA_REGSET(CAPTURE, 0x10);
 186DEFINE_VIA_REGSET(FM, 0x20);
 187
 188/* AC'97 */
 189#define VIA_REG_AC97                    0x80    /* dword */
 190#define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 191#define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 192#define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 193#define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 194#define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 195#define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 196#define   VIA_REG_AC97_BUSY             (1<<24)
 197#define   VIA_REG_AC97_READ             (1<<23)
 198#define   VIA_REG_AC97_CMD_SHIFT        16
 199#define   VIA_REG_AC97_CMD_MASK         0x7e
 200#define   VIA_REG_AC97_DATA_SHIFT       0
 201#define   VIA_REG_AC97_DATA_MASK        0xffff
 202
 203#define VIA_REG_SGD_SHADOW              0x84    /* dword */
 204/* via686 */
 205#define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 206#define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 207#define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 208#define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 209#define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 210#define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 211#define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 212#define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 213#define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 214#define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 215#define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 216#define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 217/* via8233 */
 218#define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 219#define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 220#define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 221#define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 222#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 223#define   VIA8233_REG_SGD_CHAN_SDX      0
 224#define   VIA8233_REG_SGD_CHAN_MULTI    4
 225#define   VIA8233_REG_SGD_CHAN_REC      6
 226#define   VIA8233_REG_SGD_CHAN_REC1     7
 227
 228#define VIA_REG_GPI_STATUS              0x88
 229#define VIA_REG_GPI_INTR                0x8c
 230
 231/* multi-channel and capture registers for via8233 */
 232DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 233DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 234
 235/* via8233-specific registers */
 236#define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 237#define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 238#define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 239#define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 240#define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 241#define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 242#define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 243#define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 244
 245#define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 246
 247#define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 248#define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 249#define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 250#define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 251
 252#define VIA_TBL_BIT_FLAG        0x40000000
 253#define VIA_TBL_BIT_EOL         0x80000000
 254
 255/* pci space */
 256#define VIA_ACLINK_STAT         0x40
 257#define  VIA_ACLINK_C11_READY   0x20
 258#define  VIA_ACLINK_C10_READY   0x10
 259#define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 260#define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 261#define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 262#define VIA_ACLINK_CTRL         0x41
 263#define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 264#define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 265#define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 266#define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 267#define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 268#define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 269#define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 270#define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 271#define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 272                                 VIA_ACLINK_CTRL_RESET|\
 273                                 VIA_ACLINK_CTRL_PCM|\
 274                                 VIA_ACLINK_CTRL_VRA)
 275#define VIA_FUNC_ENABLE         0x42
 276#define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 277#define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 278#define  VIA_FUNC_RX2C_WRITE    0x20
 279#define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 280#define  VIA_FUNC_ENABLE_GAME   0x08
 281#define  VIA_FUNC_ENABLE_FM     0x04
 282#define  VIA_FUNC_ENABLE_MIDI   0x02
 283#define  VIA_FUNC_ENABLE_SB     0x01
 284#define VIA_PNP_CONTROL         0x43
 285#define VIA_FM_NMI_CTRL         0x48
 286#define VIA8233_VOLCHG_CTRL     0x48
 287#define VIA8233_SPDIF_CTRL      0x49
 288#define  VIA8233_SPDIF_DX3      0x08
 289#define  VIA8233_SPDIF_SLOT_MASK        0x03
 290#define  VIA8233_SPDIF_SLOT_1011        0x00
 291#define  VIA8233_SPDIF_SLOT_34          0x01
 292#define  VIA8233_SPDIF_SLOT_78          0x02
 293#define  VIA8233_SPDIF_SLOT_69          0x03
 294
 295/*
 296 */
 297
 298#define VIA_DXS_AUTO    0
 299#define VIA_DXS_ENABLE  1
 300#define VIA_DXS_DISABLE 2
 301#define VIA_DXS_48K     3
 302#define VIA_DXS_NO_VRA  4
 303#define VIA_DXS_SRC     5
 304
 305
 306/*
 307 * pcm stream
 308 */
 309
 310struct snd_via_sg_table {
 311        unsigned int offset;
 312        unsigned int size;
 313} ;
 314
 315#define VIA_TABLE_SIZE  255
 316#define VIA_MAX_BUFSIZE (1<<24)
 317
 318struct viadev {
 319        unsigned int reg_offset;
 320        unsigned long port;
 321        int direction;  /* playback = 0, capture = 1 */
 322        struct snd_pcm_substream *substream;
 323        int running;
 324        unsigned int tbl_entries; /* # descriptors */
 325        struct snd_dma_buffer table;
 326        struct snd_via_sg_table *idx_table;
 327        /* for recovery from the unexpected pointer */
 328        unsigned int lastpos;
 329        unsigned int fragsize;
 330        unsigned int bufsize;
 331        unsigned int bufsize2;
 332        int hwptr_done;         /* processed frame position in the buffer */
 333        int in_interrupt;
 334        int shadow_shift;
 335};
 336
 337
 338enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 339enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 340
 341#define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 342
 343struct via_rate_lock {
 344        spinlock_t lock;
 345        int rate;
 346        int used;
 347};
 348
 349struct via82xx {
 350        int irq;
 351
 352        unsigned long port;
 353        struct resource *mpu_res;
 354        int chip_type;
 355        unsigned char revision;
 356
 357        unsigned char old_legacy;
 358        unsigned char old_legacy_cfg;
 359#ifdef CONFIG_PM
 360        unsigned char legacy_saved;
 361        unsigned char legacy_cfg_saved;
 362        unsigned char spdif_ctrl_saved;
 363        unsigned char capture_src_saved[2];
 364        unsigned int mpu_port_saved;
 365#endif
 366
 367        unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 368        unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 369
 370        unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 371
 372        struct pci_dev *pci;
 373        struct snd_card *card;
 374
 375        unsigned int num_devs;
 376        unsigned int playback_devno, multi_devno, capture_devno;
 377        struct viadev devs[VIA_MAX_DEVS];
 378        struct via_rate_lock rates[2]; /* playback and capture */
 379        unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 380        unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 381        unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 382        unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 383
 384        struct snd_pcm *pcms[2];
 385        struct snd_rawmidi *rmidi;
 386
 387        struct snd_ac97_bus *ac97_bus;
 388        struct snd_ac97 *ac97;
 389        unsigned int ac97_clock;
 390        unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 391
 392        spinlock_t reg_lock;
 393        struct snd_info_entry *proc_entry;
 394
 395#ifdef SUPPORT_JOYSTICK
 396        struct gameport *gameport;
 397#endif
 398};
 399
 400static struct pci_device_id snd_via82xx_ids[] = {
 401        /* 0x1106, 0x3058 */
 402        { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
 403        /* 0x1106, 0x3059 */
 404        { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
 405        { 0, }
 406};
 407
 408MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 409
 410/*
 411 */
 412
 413/*
 414 * allocate and initialize the descriptor buffers
 415 * periods = number of periods
 416 * fragsize = period size in bytes
 417 */
 418static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 419                           struct pci_dev *pci,
 420                           unsigned int periods, unsigned int fragsize)
 421{
 422        unsigned int i, idx, ofs, rest;
 423        struct via82xx *chip = snd_pcm_substream_chip(substream);
 424
 425        if (dev->table.area == NULL) {
 426                /* the start of each lists must be aligned to 8 bytes,
 427                 * but the kernel pages are much bigger, so we don't care
 428                 */
 429                if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
 430                                        PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 431                                        &dev->table) < 0)
 432                        return -ENOMEM;
 433        }
 434        if (! dev->idx_table) {
 435                dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
 436                if (! dev->idx_table)
 437                        return -ENOMEM;
 438        }
 439
 440        /* fill the entries */
 441        idx = 0;
 442        ofs = 0;
 443        for (i = 0; i < periods; i++) {
 444                rest = fragsize;
 445                /* fill descriptors for a period.
 446                 * a period can be split to several descriptors if it's
 447                 * over page boundary.
 448                 */
 449                do {
 450                        unsigned int r;
 451                        unsigned int flag;
 452                        unsigned int addr;
 453
 454                        if (idx >= VIA_TABLE_SIZE) {
 455                                snd_printk(KERN_ERR "via82xx: too much table size!\n");
 456                                return -EINVAL;
 457                        }
 458                        addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 459                        ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
 460                        r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 461                        rest -= r;
 462                        if (! rest) {
 463                                if (i == periods - 1)
 464                                        flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 465                                else
 466                                        flag = VIA_TBL_BIT_FLAG; /* period boundary */
 467                        } else
 468                                flag = 0; /* period continues to the next */
 469                        // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
 470                        ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
 471                        dev->idx_table[idx].offset = ofs;
 472                        dev->idx_table[idx].size = r;
 473                        ofs += r;
 474                        idx++;
 475                } while (rest > 0);
 476        }
 477        dev->tbl_entries = idx;
 478        dev->bufsize = periods * fragsize;
 479        dev->bufsize2 = dev->bufsize / 2;
 480        dev->fragsize = fragsize;
 481        return 0;
 482}
 483
 484
 485static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 486                           struct pci_dev *pci)
 487{
 488        if (dev->table.area) {
 489                snd_dma_free_pages(&dev->table);
 490                dev->table.area = NULL;
 491        }
 492        kfree(dev->idx_table);
 493        dev->idx_table = NULL;
 494        return 0;
 495}
 496
 497/*
 498 *  Basic I/O
 499 */
 500
 501static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 502{
 503        return inl(VIAREG(chip, AC97));
 504}
 505 
 506static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 507{
 508        outl(val, VIAREG(chip, AC97));
 509}
 510 
 511static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 512{
 513        unsigned int timeout = 1000;    /* 1ms */
 514        unsigned int val;
 515        
 516        while (timeout-- > 0) {
 517                udelay(1);
 518                if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 519                        return val & 0xffff;
 520        }
 521        snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
 522                   secondary, snd_via82xx_codec_xread(chip));
 523        return -EIO;
 524}
 525 
 526static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 527{
 528        unsigned int timeout = 1000;    /* 1ms */
 529        unsigned int val, val1;
 530        unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 531                                         VIA_REG_AC97_SECONDARY_VALID;
 532        
 533        while (timeout-- > 0) {
 534                val = snd_via82xx_codec_xread(chip);
 535                val1 = val & (VIA_REG_AC97_BUSY | stat);
 536                if (val1 == stat)
 537                        return val & 0xffff;
 538                udelay(1);
 539        }
 540        return -EIO;
 541}
 542 
 543static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 544{
 545        struct via82xx *chip = ac97->private_data;
 546        int err;
 547        err = snd_via82xx_codec_ready(chip, ac97->num);
 548        /* here we need to wait fairly for long time.. */
 549        msleep(500);
 550}
 551
 552static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 553                                    unsigned short reg,
 554                                    unsigned short val)
 555{
 556        struct via82xx *chip = ac97->private_data;
 557        unsigned int xval;
 558
 559        xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 560        xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 561        xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 562        xval |= val << VIA_REG_AC97_DATA_SHIFT;
 563        snd_via82xx_codec_xwrite(chip, xval);
 564        snd_via82xx_codec_ready(chip, ac97->num);
 565}
 566
 567static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 568{
 569        struct via82xx *chip = ac97->private_data;
 570        unsigned int xval, val = 0xffff;
 571        int again = 0;
 572
 573        xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 574        xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 575        xval |= VIA_REG_AC97_READ;
 576        xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 577        while (1) {
 578                if (again++ > 3) {
 579                        snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
 580                                   ac97->num, snd_via82xx_codec_xread(chip));
 581                        return 0xffff;
 582                }
 583                snd_via82xx_codec_xwrite(chip, xval);
 584                udelay (20);
 585                if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 586                        udelay(25);
 587                        val = snd_via82xx_codec_xread(chip);
 588                        break;
 589                }
 590        }
 591        return val & 0xffff;
 592}
 593
 594static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 595{
 596        outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 597             VIADEV_REG(viadev, OFFSET_CONTROL));
 598        inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 599        udelay(50);
 600        /* disable interrupts */
 601        outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 602        /* clear interrupts */
 603        outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 604        outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 605        // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 606        viadev->lastpos = 0;
 607        viadev->hwptr_done = 0;
 608}
 609
 610
 611/*
 612 *  Interrupt handler
 613 *  Used for 686 and 8233A
 614 */
 615static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 616{
 617        struct via82xx *chip = dev_id;
 618        unsigned int status;
 619        unsigned int i;
 620
 621        status = inl(VIAREG(chip, SGD_SHADOW));
 622        if (! (status & chip->intr_mask)) {
 623                if (chip->rmidi)
 624                        /* check mpu401 interrupt */
 625                        return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 626                return IRQ_NONE;
 627        }
 628
 629        /* check status for each stream */
 630        spin_lock(&chip->reg_lock);
 631        for (i = 0; i < chip->num_devs; i++) {
 632                struct viadev *viadev = &chip->devs[i];
 633                unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 634                if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 635                        continue;
 636                if (viadev->substream && viadev->running) {
 637                        /*
 638                         * Update hwptr_done based on 'period elapsed'
 639                         * interrupts. We'll use it, when the chip returns 0 
 640                         * for OFFSET_CURR_COUNT.
 641                         */
 642                        if (c_status & VIA_REG_STAT_EOL)
 643                                viadev->hwptr_done = 0;
 644                        else
 645                                viadev->hwptr_done += viadev->fragsize;
 646                        viadev->in_interrupt = c_status;
 647                        spin_unlock(&chip->reg_lock);
 648                        snd_pcm_period_elapsed(viadev->substream);
 649                        spin_lock(&chip->reg_lock);
 650                        viadev->in_interrupt = 0;
 651                }
 652                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 653        }
 654        spin_unlock(&chip->reg_lock);
 655        return IRQ_HANDLED;
 656}
 657
 658/*
 659 *  Interrupt handler
 660 */
 661static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 662{
 663        struct via82xx *chip = dev_id;
 664        unsigned int status;
 665        unsigned int i;
 666        int irqreturn = 0;
 667
 668        /* check status for each stream */
 669        spin_lock(&chip->reg_lock);
 670        status = inl(VIAREG(chip, SGD_SHADOW));
 671
 672        for (i = 0; i < chip->num_devs; i++) {
 673                struct viadev *viadev = &chip->devs[i];
 674                struct snd_pcm_substream *substream;
 675                unsigned char c_status, shadow_status;
 676
 677                shadow_status = (status >> viadev->shadow_shift) &
 678                        (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 679                         VIA_REG_STAT_FLAG);
 680                c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 681                if (!c_status)
 682                        continue;
 683
 684                substream = viadev->substream;
 685                if (substream && viadev->running) {
 686                        /*
 687                         * Update hwptr_done based on 'period elapsed'
 688                         * interrupts. We'll use it, when the chip returns 0 
 689                         * for OFFSET_CURR_COUNT.
 690                         */
 691                        if (c_status & VIA_REG_STAT_EOL)
 692                                viadev->hwptr_done = 0;
 693                        else
 694                                viadev->hwptr_done += viadev->fragsize;
 695                        viadev->in_interrupt = c_status;
 696                        if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 697                                viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 698                        spin_unlock(&chip->reg_lock);
 699
 700                        snd_pcm_period_elapsed(substream);
 701
 702                        spin_lock(&chip->reg_lock);
 703                        viadev->in_interrupt = 0;
 704                }
 705                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 706                irqreturn = 1;
 707        }
 708        spin_unlock(&chip->reg_lock);
 709        return IRQ_RETVAL(irqreturn);
 710}
 711
 712/*
 713 *  PCM callbacks
 714 */
 715
 716/*
 717 * trigger callback
 718 */
 719static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 720{
 721        struct via82xx *chip = snd_pcm_substream_chip(substream);
 722        struct viadev *viadev = substream->runtime->private_data;
 723        unsigned char val;
 724
 725        if (chip->chip_type != TYPE_VIA686)
 726                val = VIA_REG_CTRL_INT;
 727        else
 728                val = 0;
 729        switch (cmd) {
 730        case SNDRV_PCM_TRIGGER_START:
 731        case SNDRV_PCM_TRIGGER_RESUME:
 732                val |= VIA_REG_CTRL_START;
 733                viadev->running = 1;
 734                break;
 735        case SNDRV_PCM_TRIGGER_STOP:
 736        case SNDRV_PCM_TRIGGER_SUSPEND:
 737                val = VIA_REG_CTRL_TERMINATE;
 738                viadev->running = 0;
 739                break;
 740        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 741                val |= VIA_REG_CTRL_PAUSE;
 742                viadev->running = 0;
 743                break;
 744        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 745                viadev->running = 1;
 746                break;
 747        default:
 748                return -EINVAL;
 749        }
 750        outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 751        if (cmd == SNDRV_PCM_TRIGGER_STOP)
 752                snd_via82xx_channel_reset(chip, viadev);
 753        return 0;
 754}
 755
 756
 757/*
 758 * pointer callbacks
 759 */
 760
 761/*
 762 * calculate the linear position at the given sg-buffer index and the rest count
 763 */
 764
 765#define check_invalid_pos(viadev,pos) \
 766        ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 767                                     viadev->lastpos < viadev->bufsize2))
 768
 769static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
 770                                           unsigned int count)
 771{
 772        unsigned int size, base, res;
 773
 774        size = viadev->idx_table[idx].size;
 775        base = viadev->idx_table[idx].offset;
 776        res = base + size - count;
 777        if (res >= viadev->bufsize)
 778                res -= viadev->bufsize;
 779
 780        /* check the validity of the calculated position */
 781        if (size < count) {
 782                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 783                           (int)size, (int)count);
 784                res = viadev->lastpos;
 785        } else {
 786                if (! count) {
 787                        /* Some mobos report count = 0 on the DMA boundary,
 788                         * i.e. count = size indeed.
 789                         * Let's check whether this step is above the expected size.
 790                         */
 791                        int delta = res - viadev->lastpos;
 792                        if (delta < 0)
 793                                delta += viadev->bufsize;
 794                        if ((unsigned int)delta > viadev->fragsize)
 795                                res = base;
 796                }
 797                if (check_invalid_pos(viadev, res)) {
 798#ifdef POINTER_DEBUG
 799                        printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
 800                               "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
 801                               "count = 0x%x\n", idx, viadev->tbl_entries,
 802                               viadev->lastpos, viadev->bufsize2,
 803                               viadev->idx_table[idx].offset,
 804                               viadev->idx_table[idx].size, count);
 805#endif
 806                        /* count register returns full size when end of buffer is reached */
 807                        res = base + size;
 808                        if (check_invalid_pos(viadev, res)) {
 809                                snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
 810                                           "using last valid pointer\n");
 811                                res = viadev->lastpos;
 812                        }
 813                }
 814        }
 815        return res;
 816}
 817
 818/*
 819 * get the current pointer on via686
 820 */
 821static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 822{
 823        struct via82xx *chip = snd_pcm_substream_chip(substream);
 824        struct viadev *viadev = substream->runtime->private_data;
 825        unsigned int idx, ptr, count, res;
 826
 827        if (snd_BUG_ON(!viadev->tbl_entries))
 828                return 0;
 829        if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 830                return 0;
 831
 832        spin_lock(&chip->reg_lock);
 833        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 834        /* The via686a does not have the current index register,
 835         * so we need to calculate the index from CURR_PTR.
 836         */
 837        ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 838        if (ptr <= (unsigned int)viadev->table.addr)
 839                idx = 0;
 840        else /* CURR_PTR holds the address + 8 */
 841                idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 842        res = calc_linear_pos(viadev, idx, count);
 843        viadev->lastpos = res; /* remember the last position */
 844        spin_unlock(&chip->reg_lock);
 845
 846        return bytes_to_frames(substream->runtime, res);
 847}
 848
 849/*
 850 * get the current pointer on via823x
 851 */
 852static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 853{
 854        struct via82xx *chip = snd_pcm_substream_chip(substream);
 855        struct viadev *viadev = substream->runtime->private_data;
 856        unsigned int idx, count, res;
 857        int status;
 858        
 859        if (snd_BUG_ON(!viadev->tbl_entries))
 860                return 0;
 861
 862        spin_lock(&chip->reg_lock);
 863        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 864        status = viadev->in_interrupt;
 865        if (!status)
 866                status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 867
 868        /* An apparent bug in the 8251 is worked around by sending a 
 869         * REG_CTRL_START. */
 870        if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 871                snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 872
 873        if (!(status & VIA_REG_STAT_ACTIVE)) {
 874                res = 0;
 875                goto unlock;
 876        }
 877        if (count & 0xffffff) {
 878                idx = count >> 24;
 879                if (idx >= viadev->tbl_entries) {
 880#ifdef POINTER_DEBUG
 881                        printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
 882                               viadev->tbl_entries);
 883#endif
 884                        res = viadev->lastpos;
 885                } else {
 886                        count &= 0xffffff;
 887                        res = calc_linear_pos(viadev, idx, count);
 888                }
 889        } else {
 890                res = viadev->hwptr_done;
 891                if (!viadev->in_interrupt) {
 892                        if (status & VIA_REG_STAT_EOL) {
 893                                res = 0;
 894                        } else
 895                                if (status & VIA_REG_STAT_FLAG) {
 896                                        res += viadev->fragsize;
 897                                }
 898                }
 899        }                           
 900unlock:
 901        viadev->lastpos = res;
 902        spin_unlock(&chip->reg_lock);
 903
 904        return bytes_to_frames(substream->runtime, res);
 905}
 906
 907
 908/*
 909 * hw_params callback:
 910 * allocate the buffer and build up the buffer description table
 911 */
 912static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 913                                 struct snd_pcm_hw_params *hw_params)
 914{
 915        struct via82xx *chip = snd_pcm_substream_chip(substream);
 916        struct viadev *viadev = substream->runtime->private_data;
 917        int err;
 918
 919        err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 920        if (err < 0)
 921                return err;
 922        err = build_via_table(viadev, substream, chip->pci,
 923                              params_periods(hw_params),
 924                              params_period_bytes(hw_params));
 925        if (err < 0)
 926                return err;
 927
 928        return 0;
 929}
 930
 931/*
 932 * hw_free callback:
 933 * clean up the buffer description table and release the buffer
 934 */
 935static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 936{
 937        struct via82xx *chip = snd_pcm_substream_chip(substream);
 938        struct viadev *viadev = substream->runtime->private_data;
 939
 940        clean_via_table(viadev, substream, chip->pci);
 941        snd_pcm_lib_free_pages(substream);
 942        return 0;
 943}
 944
 945
 946/*
 947 * set up the table pointer
 948 */
 949static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 950{
 951        snd_via82xx_codec_ready(chip, 0);
 952        outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 953        udelay(20);
 954        snd_via82xx_codec_ready(chip, 0);
 955}
 956
 957/*
 958 * prepare callback for playback and capture on via686
 959 */
 960static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 961                                struct snd_pcm_runtime *runtime)
 962{
 963        snd_via82xx_channel_reset(chip, viadev);
 964        /* this must be set after channel_reset */
 965        snd_via82xx_set_table_ptr(chip, viadev);
 966        outb(VIA_REG_TYPE_AUTOSTART |
 967             (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 968             (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 969             ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 970             VIA_REG_TYPE_INT_EOL |
 971             VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 972}
 973
 974static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 975{
 976        struct via82xx *chip = snd_pcm_substream_chip(substream);
 977        struct viadev *viadev = substream->runtime->private_data;
 978        struct snd_pcm_runtime *runtime = substream->runtime;
 979
 980        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 981        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 982        via686_setup_format(chip, viadev, runtime);
 983        return 0;
 984}
 985
 986static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 987{
 988        struct via82xx *chip = snd_pcm_substream_chip(substream);
 989        struct viadev *viadev = substream->runtime->private_data;
 990        struct snd_pcm_runtime *runtime = substream->runtime;
 991
 992        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 993        via686_setup_format(chip, viadev, runtime);
 994        return 0;
 995}
 996
 997/*
 998 * lock the current rate
 999 */
1000static int via_lock_rate(struct via_rate_lock *rec, int rate)
1001{
1002        int changed = 0;
1003
1004        spin_lock_irq(&rec->lock);
1005        if (rec->rate != rate) {
1006                if (rec->rate && rec->used > 1) /* already set */
1007                        changed = -EINVAL;
1008                else {
1009                        rec->rate = rate;
1010                        changed = 1;
1011                }
1012        }
1013        spin_unlock_irq(&rec->lock);
1014        return changed;
1015}
1016
1017/*
1018 * prepare callback for DSX playback on via823x
1019 */
1020static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1021{
1022        struct via82xx *chip = snd_pcm_substream_chip(substream);
1023        struct viadev *viadev = substream->runtime->private_data;
1024        struct snd_pcm_runtime *runtime = substream->runtime;
1025        int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1026        int rate_changed;
1027        u32 rbits;
1028
1029        if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1030                return rate_changed;
1031        if (rate_changed)
1032                snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1033                                  chip->no_vra ? 48000 : runtime->rate);
1034        if (chip->spdif_on && viadev->reg_offset == 0x30)
1035                snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1036
1037        if (runtime->rate == 48000)
1038                rbits = 0xfffff;
1039        else
1040                rbits = (0x100000 / 48000) * runtime->rate +
1041                        ((0x100000 % 48000) * runtime->rate) / 48000;
1042        snd_BUG_ON(rbits & ~0xfffff);
1043        snd_via82xx_channel_reset(chip, viadev);
1044        snd_via82xx_set_table_ptr(chip, viadev);
1045        outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1046             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1047        outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1048             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1049        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1050             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1051             rbits | /* rate */
1052             0xff000000,    /* STOP index is never reached */
1053             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1054        udelay(20);
1055        snd_via82xx_codec_ready(chip, 0);
1056        return 0;
1057}
1058
1059/*
1060 * prepare callback for multi-channel playback on via823x
1061 */
1062static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1063{
1064        struct via82xx *chip = snd_pcm_substream_chip(substream);
1065        struct viadev *viadev = substream->runtime->private_data;
1066        struct snd_pcm_runtime *runtime = substream->runtime;
1067        unsigned int slots;
1068        int fmt;
1069
1070        if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1071                return -EINVAL;
1072        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1073        snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1074        snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1075        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1076        snd_via82xx_channel_reset(chip, viadev);
1077        snd_via82xx_set_table_ptr(chip, viadev);
1078
1079        fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1080                VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1081        fmt |= runtime->channels << 4;
1082        outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1083#if 0
1084        if (chip->revision == VIA_REV_8233A)
1085                slots = 0;
1086        else
1087#endif
1088        {
1089                /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1090                /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1091                switch (runtime->channels) {
1092                case 1: slots = (1<<0) | (1<<4); break;
1093                case 2: slots = (1<<0) | (2<<4); break;
1094                case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1095                case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1096                case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1097                case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1098                default: slots = 0; break;
1099                }
1100        }
1101        /* STOP index is never reached */
1102        outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1103        udelay(20);
1104        snd_via82xx_codec_ready(chip, 0);
1105        return 0;
1106}
1107
1108/*
1109 * prepare callback for capture on via823x
1110 */
1111static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1112{
1113        struct via82xx *chip = snd_pcm_substream_chip(substream);
1114        struct viadev *viadev = substream->runtime->private_data;
1115        struct snd_pcm_runtime *runtime = substream->runtime;
1116
1117        if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1118                return -EINVAL;
1119        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1120        snd_via82xx_channel_reset(chip, viadev);
1121        snd_via82xx_set_table_ptr(chip, viadev);
1122        outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1123        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1124             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1125             0xff000000,    /* STOP index is never reached */
1126             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1127        udelay(20);
1128        snd_via82xx_codec_ready(chip, 0);
1129        return 0;
1130}
1131
1132
1133/*
1134 * pcm hardware definition, identical for both playback and capture
1135 */
1136static struct snd_pcm_hardware snd_via82xx_hw =
1137{
1138        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1139                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1140                                 SNDRV_PCM_INFO_MMAP_VALID |
1141                                 /* SNDRV_PCM_INFO_RESUME | */
1142                                 SNDRV_PCM_INFO_PAUSE),
1143        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1144        .rates =                SNDRV_PCM_RATE_48000,
1145        .rate_min =             48000,
1146        .rate_max =             48000,
1147        .channels_min =         1,
1148        .channels_max =         2,
1149        .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1150        .period_bytes_min =     32,
1151        .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1152        .periods_min =          2,
1153        .periods_max =          VIA_TABLE_SIZE / 2,
1154        .fifo_size =            0,
1155};
1156
1157
1158/*
1159 * open callback skeleton
1160 */
1161static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1162                                struct snd_pcm_substream *substream)
1163{
1164        struct snd_pcm_runtime *runtime = substream->runtime;
1165        int err;
1166        struct via_rate_lock *ratep;
1167
1168        runtime->hw = snd_via82xx_hw;
1169        
1170        /* set the hw rate condition */
1171        ratep = &chip->rates[viadev->direction];
1172        spin_lock_irq(&ratep->lock);
1173        ratep->used++;
1174        if (chip->spdif_on && viadev->reg_offset == 0x30) {
1175                /* DXS#3 and spdif is on */
1176                runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1177                snd_pcm_limit_hw_rates(runtime);
1178        } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1179                /* fixed DXS playback rate */
1180                runtime->hw.rates = SNDRV_PCM_RATE_48000;
1181                runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1182        } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1183                /* use full SRC capabilities of DXS */
1184                runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1185                                     SNDRV_PCM_RATE_8000_48000);
1186                runtime->hw.rate_min = 8000;
1187                runtime->hw.rate_max = 48000;
1188        } else if (! ratep->rate) {
1189                int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1190                runtime->hw.rates = chip->ac97->rates[idx];
1191                snd_pcm_limit_hw_rates(runtime);
1192        } else {
1193                /* a fixed rate */
1194                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1195                runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1196        }
1197        spin_unlock_irq(&ratep->lock);
1198
1199        /* we may remove following constaint when we modify table entries
1200           in interrupt */
1201        if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1202                return err;
1203
1204        runtime->private_data = viadev;
1205        viadev->substream = substream;
1206
1207        return 0;
1208}
1209
1210
1211/*
1212 * open callback for playback on via686 and via823x DSX
1213 */
1214static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1215{
1216        struct via82xx *chip = snd_pcm_substream_chip(substream);
1217        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1218        int err;
1219
1220        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1221                return err;
1222        return 0;
1223}
1224
1225/*
1226 * open callback for playback on via823x multi-channel
1227 */
1228static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1229{
1230        struct via82xx *chip = snd_pcm_substream_chip(substream);
1231        struct viadev *viadev = &chip->devs[chip->multi_devno];
1232        int err;
1233        /* channels constraint for VIA8233A
1234         * 3 and 5 channels are not supported
1235         */
1236        static unsigned int channels[] = {
1237                1, 2, 4, 6
1238        };
1239        static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1240                .count = ARRAY_SIZE(channels),
1241                .list = channels,
1242                .mask = 0,
1243        };
1244
1245        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1246                return err;
1247        substream->runtime->hw.channels_max = 6;
1248        if (chip->revision == VIA_REV_8233A)
1249                snd_pcm_hw_constraint_list(substream->runtime, 0,
1250                                           SNDRV_PCM_HW_PARAM_CHANNELS,
1251                                           &hw_constraints_channels);
1252        return 0;
1253}
1254
1255/*
1256 * open callback for capture on via686 and via823x
1257 */
1258static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1259{
1260        struct via82xx *chip = snd_pcm_substream_chip(substream);
1261        struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1262
1263        return snd_via82xx_pcm_open(chip, viadev, substream);
1264}
1265
1266/*
1267 * close callback
1268 */
1269static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1270{
1271        struct via82xx *chip = snd_pcm_substream_chip(substream);
1272        struct viadev *viadev = substream->runtime->private_data;
1273        struct via_rate_lock *ratep;
1274
1275        /* release the rate lock */
1276        ratep = &chip->rates[viadev->direction];
1277        spin_lock_irq(&ratep->lock);
1278        ratep->used--;
1279        if (! ratep->used)
1280                ratep->rate = 0;
1281        spin_unlock_irq(&ratep->lock);
1282        if (! ratep->rate) {
1283                if (! viadev->direction) {
1284                        snd_ac97_update_power(chip->ac97,
1285                                              AC97_PCM_FRONT_DAC_RATE, 0);
1286                        snd_ac97_update_power(chip->ac97,
1287                                              AC97_PCM_SURR_DAC_RATE, 0);
1288                        snd_ac97_update_power(chip->ac97,
1289                                              AC97_PCM_LFE_DAC_RATE, 0);
1290                } else
1291                        snd_ac97_update_power(chip->ac97,
1292                                              AC97_PCM_LR_ADC_RATE, 0);
1293        }
1294        viadev->substream = NULL;
1295        return 0;
1296}
1297
1298
1299/* via686 playback callbacks */
1300static struct snd_pcm_ops snd_via686_playback_ops = {
1301        .open =         snd_via82xx_playback_open,
1302        .close =        snd_via82xx_pcm_close,
1303        .ioctl =        snd_pcm_lib_ioctl,
1304        .hw_params =    snd_via82xx_hw_params,
1305        .hw_free =      snd_via82xx_hw_free,
1306        .prepare =      snd_via686_playback_prepare,
1307        .trigger =      snd_via82xx_pcm_trigger,
1308        .pointer =      snd_via686_pcm_pointer,
1309        .page =         snd_pcm_sgbuf_ops_page,
1310};
1311
1312/* via686 capture callbacks */
1313static struct snd_pcm_ops snd_via686_capture_ops = {
1314        .open =         snd_via82xx_capture_open,
1315        .close =        snd_via82xx_pcm_close,
1316        .ioctl =        snd_pcm_lib_ioctl,
1317        .hw_params =    snd_via82xx_hw_params,
1318        .hw_free =      snd_via82xx_hw_free,
1319        .prepare =      snd_via686_capture_prepare,
1320        .trigger =      snd_via82xx_pcm_trigger,
1321        .pointer =      snd_via686_pcm_pointer,
1322        .page =         snd_pcm_sgbuf_ops_page,
1323};
1324
1325/* via823x DSX playback callbacks */
1326static struct snd_pcm_ops snd_via8233_playback_ops = {
1327        .open =         snd_via82xx_playback_open,
1328        .close =        snd_via82xx_pcm_close,
1329        .ioctl =        snd_pcm_lib_ioctl,
1330        .hw_params =    snd_via82xx_hw_params,
1331        .hw_free =      snd_via82xx_hw_free,
1332        .prepare =      snd_via8233_playback_prepare,
1333        .trigger =      snd_via82xx_pcm_trigger,
1334        .pointer =      snd_via8233_pcm_pointer,
1335        .page =         snd_pcm_sgbuf_ops_page,
1336};
1337
1338/* via823x multi-channel playback callbacks */
1339static struct snd_pcm_ops snd_via8233_multi_ops = {
1340        .open =         snd_via8233_multi_open,
1341        .close =        snd_via82xx_pcm_close,
1342        .ioctl =        snd_pcm_lib_ioctl,
1343        .hw_params =    snd_via82xx_hw_params,
1344        .hw_free =      snd_via82xx_hw_free,
1345        .prepare =      snd_via8233_multi_prepare,
1346        .trigger =      snd_via82xx_pcm_trigger,
1347        .pointer =      snd_via8233_pcm_pointer,
1348        .page =         snd_pcm_sgbuf_ops_page,
1349};
1350
1351/* via823x capture callbacks */
1352static struct snd_pcm_ops snd_via8233_capture_ops = {
1353        .open =         snd_via82xx_capture_open,
1354        .close =        snd_via82xx_pcm_close,
1355        .ioctl =        snd_pcm_lib_ioctl,
1356        .hw_params =    snd_via82xx_hw_params,
1357        .hw_free =      snd_via82xx_hw_free,
1358        .prepare =      snd_via8233_capture_prepare,
1359        .trigger =      snd_via82xx_pcm_trigger,
1360        .pointer =      snd_via8233_pcm_pointer,
1361        .page =         snd_pcm_sgbuf_ops_page,
1362};
1363
1364
1365static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1366                        int shadow_pos, int direction)
1367{
1368        chip->devs[idx].reg_offset = reg_offset;
1369        chip->devs[idx].shadow_shift = shadow_pos * 4;
1370        chip->devs[idx].direction = direction;
1371        chip->devs[idx].port = chip->port + reg_offset;
1372}
1373
1374/*
1375 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1376 */
1377static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1378{
1379        struct snd_pcm *pcm;
1380        int i, err;
1381
1382        chip->playback_devno = 0;       /* x 4 */
1383        chip->multi_devno = 4;          /* x 1 */
1384        chip->capture_devno = 5;        /* x 2 */
1385        chip->num_devs = 7;
1386        chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1387
1388        /* PCM #0:  4 DSX playbacks and 1 capture */
1389        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1390        if (err < 0)
1391                return err;
1392        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1393        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1394        pcm->private_data = chip;
1395        strcpy(pcm->name, chip->card->shortname);
1396        chip->pcms[0] = pcm;
1397        /* set up playbacks */
1398        for (i = 0; i < 4; i++)
1399                init_viadev(chip, i, 0x10 * i, i, 0);
1400        /* capture */
1401        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1402
1403        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1404                                              snd_dma_pci_data(chip->pci),
1405                                              64*1024, VIA_MAX_BUFSIZE);
1406
1407        /* PCM #1:  multi-channel playback and 2nd capture */
1408        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1409        if (err < 0)
1410                return err;
1411        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1412        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1413        pcm->private_data = chip;
1414        strcpy(pcm->name, chip->card->shortname);
1415        chip->pcms[1] = pcm;
1416        /* set up playback */
1417        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1418        /* set up capture */
1419        init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1420
1421        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1422                                              snd_dma_pci_data(chip->pci),
1423                                              64*1024, VIA_MAX_BUFSIZE);
1424        return 0;
1425}
1426
1427/*
1428 * create pcm instances for VIA8233A
1429 */
1430static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1431{
1432        struct snd_pcm *pcm;
1433        int err;
1434
1435        chip->multi_devno = 0;
1436        chip->playback_devno = 1;
1437        chip->capture_devno = 2;
1438        chip->num_devs = 3;
1439        chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1440
1441        /* PCM #0:  multi-channel playback and capture */
1442        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1443        if (err < 0)
1444                return err;
1445        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1446        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1447        pcm->private_data = chip;
1448        strcpy(pcm->name, chip->card->shortname);
1449        chip->pcms[0] = pcm;
1450        /* set up playback */
1451        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1452        /* capture */
1453        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1454
1455        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1456                                              snd_dma_pci_data(chip->pci),
1457                                              64*1024, VIA_MAX_BUFSIZE);
1458
1459        /* SPDIF supported? */
1460        if (! ac97_can_spdif(chip->ac97))
1461                return 0;
1462
1463        /* PCM #1:  DXS3 playback (for spdif) */
1464        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1465        if (err < 0)
1466                return err;
1467        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1468        pcm->private_data = chip;
1469        strcpy(pcm->name, chip->card->shortname);
1470        chip->pcms[1] = pcm;
1471        /* set up playback */
1472        init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1473
1474        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1475                                              snd_dma_pci_data(chip->pci),
1476                                              64*1024, VIA_MAX_BUFSIZE);
1477        return 0;
1478}
1479
1480/*
1481 * create a pcm instance for via686a/b
1482 */
1483static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1484{
1485        struct snd_pcm *pcm;
1486        int err;
1487
1488        chip->playback_devno = 0;
1489        chip->capture_devno = 1;
1490        chip->num_devs = 2;
1491        chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1492
1493        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1494        if (err < 0)
1495                return err;
1496        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1497        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1498        pcm->private_data = chip;
1499        strcpy(pcm->name, chip->card->shortname);
1500        chip->pcms[0] = pcm;
1501        init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1502        init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1503
1504        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1505                                              snd_dma_pci_data(chip->pci),
1506                                              64*1024, VIA_MAX_BUFSIZE);
1507        return 0;
1508}
1509
1510
1511/*
1512 *  Mixer part
1513 */
1514
1515static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1516                                           struct snd_ctl_elem_info *uinfo)
1517{
1518        /* formerly they were "Line" and "Mic", but it looks like that they
1519         * have nothing to do with the actual physical connections...
1520         */
1521        static char *texts[2] = {
1522                "Input1", "Input2"
1523        };
1524        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1525        uinfo->count = 1;
1526        uinfo->value.enumerated.items = 2;
1527        if (uinfo->value.enumerated.item >= 2)
1528                uinfo->value.enumerated.item = 1;
1529        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1530        return 0;
1531}
1532
1533static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1534                                          struct snd_ctl_elem_value *ucontrol)
1535{
1536        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1537        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1538        ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1539        return 0;
1540}
1541
1542static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1543                                          struct snd_ctl_elem_value *ucontrol)
1544{
1545        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1546        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1547        u8 val, oval;
1548
1549        spin_lock_irq(&chip->reg_lock);
1550        oval = inb(port);
1551        val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1552        if (ucontrol->value.enumerated.item[0])
1553                val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1554        if (val != oval)
1555                outb(val, port);
1556        spin_unlock_irq(&chip->reg_lock);
1557        return val != oval;
1558}
1559
1560static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1561        .name = "Input Source Select",
1562        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1563        .info = snd_via8233_capture_source_info,
1564        .get = snd_via8233_capture_source_get,
1565        .put = snd_via8233_capture_source_put,
1566};
1567
1568#define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1569
1570static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1571                                      struct snd_ctl_elem_value *ucontrol)
1572{
1573        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1574        u8 val;
1575
1576        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1577        ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1578        return 0;
1579}
1580
1581static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1582                                      struct snd_ctl_elem_value *ucontrol)
1583{
1584        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1585        u8 val, oval;
1586
1587        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1588        val = oval & ~VIA8233_SPDIF_DX3;
1589        if (ucontrol->value.integer.value[0])
1590                val |= VIA8233_SPDIF_DX3;
1591        /* save the spdif flag for rate filtering */
1592        chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1593        if (val != oval) {
1594                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1595                return 1;
1596        }
1597        return 0;
1598}
1599
1600static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1601        .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1602        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1603        .info = snd_via8233_dxs3_spdif_info,
1604        .get = snd_via8233_dxs3_spdif_get,
1605        .put = snd_via8233_dxs3_spdif_put,
1606};
1607
1608static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1609                                       struct snd_ctl_elem_info *uinfo)
1610{
1611        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1612        uinfo->count = 2;
1613        uinfo->value.integer.min = 0;
1614        uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1615        return 0;
1616}
1617
1618static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1619                                      struct snd_ctl_elem_value *ucontrol)
1620{
1621        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1622        unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1623
1624        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1625        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1626        return 0;
1627}
1628
1629static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1630                                         struct snd_ctl_elem_value *ucontrol)
1631{
1632        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1633        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1634        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1635        return 0;
1636}
1637
1638static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1639                                      struct snd_ctl_elem_value *ucontrol)
1640{
1641        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1642        unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1643        unsigned long port = chip->port + 0x10 * idx;
1644        unsigned char val;
1645        int i, change = 0;
1646
1647        for (i = 0; i < 2; i++) {
1648                val = ucontrol->value.integer.value[i];
1649                if (val > VIA_DXS_MAX_VOLUME)
1650                        val = VIA_DXS_MAX_VOLUME;
1651                val = VIA_DXS_MAX_VOLUME - val;
1652                change |= val != chip->playback_volume[idx][i];
1653                if (change) {
1654                        chip->playback_volume[idx][i] = val;
1655                        outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1656                }
1657        }
1658        return change;
1659}
1660
1661static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1662                                         struct snd_ctl_elem_value *ucontrol)
1663{
1664        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1665        unsigned int idx;
1666        unsigned char val;
1667        int i, change = 0;
1668
1669        for (i = 0; i < 2; i++) {
1670                val = ucontrol->value.integer.value[i];
1671                if (val > VIA_DXS_MAX_VOLUME)
1672                        val = VIA_DXS_MAX_VOLUME;
1673                val = VIA_DXS_MAX_VOLUME - val;
1674                if (val != chip->playback_volume_c[i]) {
1675                        change = 1;
1676                        chip->playback_volume_c[i] = val;
1677                        for (idx = 0; idx < 4; idx++) {
1678                                unsigned long port = chip->port + 0x10 * idx;
1679                                chip->playback_volume[idx][i] = val;
1680                                outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1681                        }
1682                }
1683        }
1684        return change;
1685}
1686
1687static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -9450, 150, 1);
1688
1689static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1690        .name = "PCM Playback Volume",
1691        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1692        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1693                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1694        .info = snd_via8233_dxs_volume_info,
1695        .get = snd_via8233_pcmdxs_volume_get,
1696        .put = snd_via8233_pcmdxs_volume_put,
1697        .tlv = { .p = db_scale_dxs }
1698};
1699
1700static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1701        .name = "VIA DXS Playback Volume",
1702        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1703        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1704                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1705        .count = 4,
1706        .info = snd_via8233_dxs_volume_info,
1707        .get = snd_via8233_dxs_volume_get,
1708        .put = snd_via8233_dxs_volume_put,
1709        .tlv = { .p = db_scale_dxs }
1710};
1711
1712/*
1713 */
1714
1715static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1716{
1717        struct via82xx *chip = bus->private_data;
1718        chip->ac97_bus = NULL;
1719}
1720
1721static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1722{
1723        struct via82xx *chip = ac97->private_data;
1724        chip->ac97 = NULL;
1725}
1726
1727static struct ac97_quirk ac97_quirks[] = {
1728        {
1729                .subvendor = 0x1106,
1730                .subdevice = 0x4161,
1731                .codec_id = 0x56494161, /* VT1612A */
1732                .name = "Soltek SL-75DRV5",
1733                .type = AC97_TUNE_NONE
1734        },
1735        {       /* FIXME: which codec? */
1736                .subvendor = 0x1106,
1737                .subdevice = 0x4161,
1738                .name = "ASRock K7VT2",
1739                .type = AC97_TUNE_HP_ONLY
1740        },
1741        {
1742                .subvendor = 0x1019,
1743                .subdevice = 0x0a81,
1744                .name = "ECS K7VTA3",
1745                .type = AC97_TUNE_HP_ONLY
1746        },
1747        {
1748                .subvendor = 0x1019,
1749                .subdevice = 0x0a85,
1750                .name = "ECS L7VMM2",
1751                .type = AC97_TUNE_HP_ONLY
1752        },
1753        {
1754                .subvendor = 0x1019,
1755                .subdevice = 0x1841,
1756                .name = "ECS K7VTA3",
1757                .type = AC97_TUNE_HP_ONLY
1758        },
1759        {
1760                .subvendor = 0x1849,
1761                .subdevice = 0x3059,
1762                .name = "ASRock K7VM2",
1763                .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1764        },
1765        {
1766                .subvendor = 0x14cd,
1767                .subdevice = 0x7002,
1768                .name = "Unknown",
1769                .type = AC97_TUNE_ALC_JACK
1770        },
1771        {
1772                .subvendor = 0x1071,
1773                .subdevice = 0x8590,
1774                .name = "Mitac Mobo",
1775                .type = AC97_TUNE_ALC_JACK
1776        },
1777        {
1778                .subvendor = 0x161f,
1779                .subdevice = 0x202b,
1780                .name = "Arima Notebook",
1781                .type = AC97_TUNE_HP_ONLY,
1782        },
1783        {
1784                .subvendor = 0x161f,
1785                .subdevice = 0x2032,
1786                .name = "Targa Traveller 811",
1787                .type = AC97_TUNE_HP_ONLY,
1788        },
1789        {
1790                .subvendor = 0x161f,
1791                .subdevice = 0x2032,
1792                .name = "m680x",
1793                .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1794        },
1795        {
1796                .subvendor = 0x1297,
1797                .subdevice = 0xa232,
1798                .name = "Shuttle AK32VN",
1799                .type = AC97_TUNE_HP_ONLY
1800        },
1801        { } /* terminator */
1802};
1803
1804static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1805{
1806        struct snd_ac97_template ac97;
1807        int err;
1808        static struct snd_ac97_bus_ops ops = {
1809                .write = snd_via82xx_codec_write,
1810                .read = snd_via82xx_codec_read,
1811                .wait = snd_via82xx_codec_wait,
1812        };
1813
1814        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1815                return err;
1816        chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1817        chip->ac97_bus->clock = chip->ac97_clock;
1818
1819        memset(&ac97, 0, sizeof(ac97));
1820        ac97.private_data = chip;
1821        ac97.private_free = snd_via82xx_mixer_free_ac97;
1822        ac97.pci = chip->pci;
1823        ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1824        if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1825                return err;
1826
1827        snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1828
1829        if (chip->chip_type != TYPE_VIA686) {
1830                /* use slot 10/11 */
1831                snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1832        }
1833
1834        return 0;
1835}
1836
1837#ifdef SUPPORT_JOYSTICK
1838#define JOYSTICK_ADDR   0x200
1839static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1840{
1841        struct gameport *gp;
1842        struct resource *r;
1843
1844        if (!joystick)
1845                return -ENODEV;
1846
1847        r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1848        if (!r) {
1849                printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1850                       JOYSTICK_ADDR);
1851                return -EBUSY;
1852        }
1853
1854        chip->gameport = gp = gameport_allocate_port();
1855        if (!gp) {
1856                printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1857                release_and_free_resource(r);
1858                return -ENOMEM;
1859        }
1860
1861        gameport_set_name(gp, "VIA686 Gameport");
1862        gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1863        gameport_set_dev_parent(gp, &chip->pci->dev);
1864        gp->io = JOYSTICK_ADDR;
1865        gameport_set_port_data(gp, r);
1866
1867        /* Enable legacy joystick port */
1868        *legacy |= VIA_FUNC_ENABLE_GAME;
1869        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1870
1871        gameport_register_port(chip->gameport);
1872
1873        return 0;
1874}
1875
1876static void snd_via686_free_gameport(struct via82xx *chip)
1877{
1878        if (chip->gameport) {
1879                struct resource *r = gameport_get_port_data(chip->gameport);
1880
1881                gameport_unregister_port(chip->gameport);
1882                chip->gameport = NULL;
1883                release_and_free_resource(r);
1884        }
1885}
1886#else
1887static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1888{
1889        return -ENOSYS;
1890}
1891static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1892#endif
1893
1894
1895/*
1896 *
1897 */
1898
1899static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1900{
1901        int i, err, caps;
1902        unsigned char val;
1903
1904        caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1905        for (i = 0; i < caps; i++) {
1906                snd_via8233_capture_source.index = i;
1907                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1908                if (err < 0)
1909                        return err;
1910        }
1911        if (ac97_can_spdif(chip->ac97)) {
1912                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1913                if (err < 0)
1914                        return err;
1915        }
1916        if (chip->chip_type != TYPE_VIA8233A) {
1917                /* when no h/w PCM volume control is found, use DXS volume control
1918                 * as the PCM vol control
1919                 */
1920                struct snd_ctl_elem_id sid;
1921                memset(&sid, 0, sizeof(sid));
1922                strcpy(sid.name, "PCM Playback Volume");
1923                sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1924                if (! snd_ctl_find_id(chip->card, &sid)) {
1925                        snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1926                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1927                        if (err < 0)
1928                                return err;
1929                }
1930                else /* Using DXS when PCM emulation is enabled is really weird */
1931                {
1932                        /* Standalone DXS controls */
1933                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1934                        if (err < 0)
1935                                return err;
1936                }
1937        }
1938        /* select spdif data slot 10/11 */
1939        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1940        val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1941        val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1942        pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1943
1944        return 0;
1945}
1946
1947static int __devinit snd_via686_init_misc(struct via82xx *chip)
1948{
1949        unsigned char legacy, legacy_cfg;
1950        int rev_h = 0;
1951
1952        legacy = chip->old_legacy;
1953        legacy_cfg = chip->old_legacy_cfg;
1954        legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1955        legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1956        if (chip->revision >= VIA_REV_686_H) {
1957                rev_h = 1;
1958                if (mpu_port >= 0x200) {        /* force MIDI */
1959                        mpu_port &= 0xfffc;
1960                        pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1961#ifdef CONFIG_PM
1962                        chip->mpu_port_saved = mpu_port;
1963#endif
1964                } else {
1965                        mpu_port = pci_resource_start(chip->pci, 2);
1966                }
1967        } else {
1968                switch (mpu_port) {     /* force MIDI */
1969                case 0x300:
1970                case 0x310:
1971                case 0x320:
1972                case 0x330:
1973                        legacy_cfg &= ~(3 << 2);
1974                        legacy_cfg |= (mpu_port & 0x0030) >> 2;
1975                        break;
1976                default:                        /* no, use BIOS settings */
1977                        if (legacy & VIA_FUNC_ENABLE_MIDI)
1978                                mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1979                        break;
1980                }
1981        }
1982        if (mpu_port >= 0x200 &&
1983            (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1984            != NULL) {
1985                if (rev_h)
1986                        legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1987                legacy |= VIA_FUNC_ENABLE_MIDI;
1988        } else {
1989                if (rev_h)
1990                        legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1991                legacy &= ~VIA_FUNC_ENABLE_MIDI;
1992                mpu_port = 0;
1993        }
1994
1995        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1996        pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1997        if (chip->mpu_res) {
1998                if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1999                                        mpu_port, MPU401_INFO_INTEGRATED,
2000                                        chip->irq, 0, &chip->rmidi) < 0) {
2001                        printk(KERN_WARNING "unable to initialize MPU-401"
2002                               " at 0x%lx, skipping\n", mpu_port);
2003                        legacy &= ~VIA_FUNC_ENABLE_MIDI;
2004                } else {
2005                        legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2006                }
2007                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2008        }
2009
2010        snd_via686_create_gameport(chip, &legacy);
2011
2012#ifdef CONFIG_PM
2013        chip->legacy_saved = legacy;
2014        chip->legacy_cfg_saved = legacy_cfg;
2015#endif
2016
2017        return 0;
2018}
2019
2020
2021/*
2022 * proc interface
2023 */
2024static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2025                                  struct snd_info_buffer *buffer)
2026{
2027        struct via82xx *chip = entry->private_data;
2028        int i;
2029        
2030        snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2031        for (i = 0; i < 0xa0; i += 4) {
2032                snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2033        }
2034}
2035
2036static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2037{
2038        struct snd_info_entry *entry;
2039
2040        if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2041                snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2042}
2043
2044/*
2045 *
2046 */
2047
2048static int snd_via82xx_chip_init(struct via82xx *chip)
2049{
2050        unsigned int val;
2051        unsigned long end_time;
2052        unsigned char pval;
2053
2054#if 0 /* broken on K7M? */
2055        if (chip->chip_type == TYPE_VIA686)
2056                /* disable all legacy ports */
2057                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2058#endif
2059        pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2060        if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2061                /* deassert ACLink reset, force SYNC */
2062                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2063                                      VIA_ACLINK_CTRL_ENABLE |
2064                                      VIA_ACLINK_CTRL_RESET |
2065                                      VIA_ACLINK_CTRL_SYNC);
2066                udelay(100);
2067#if 1 /* FIXME: should we do full reset here for all chip models? */
2068                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2069                udelay(100);
2070#else
2071                /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2072                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2073                                      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2074                udelay(2);
2075#endif
2076                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2077                /* note - FM data out has trouble with non VRA codecs !! */
2078                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2079                udelay(100);
2080        }
2081        
2082        /* Make sure VRA is enabled, in case we didn't do a
2083         * complete codec reset, above */
2084        pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2085        if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2086                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2087                /* note - FM data out has trouble with non VRA codecs !! */
2088                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2089                udelay(100);
2090        }
2091
2092        /* wait until codec ready */
2093        end_time = jiffies + msecs_to_jiffies(750);
2094        do {
2095                pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2096                if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2097                        break;
2098                schedule_timeout_uninterruptible(1);
2099        } while (time_before(jiffies, end_time));
2100
2101        if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2102                snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2103
2104#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2105        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2106                                 VIA_REG_AC97_SECONDARY_VALID |
2107                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2108        end_time = jiffies + msecs_to_jiffies(750);
2109        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2110                                 VIA_REG_AC97_SECONDARY_VALID |
2111                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2112        do {
2113                if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2114                        chip->ac97_secondary = 1;
2115                        goto __ac97_ok2;
2116                }
2117                schedule_timeout_uninterruptible(1);
2118        } while (time_before(jiffies, end_time));
2119        /* This is ok, the most of motherboards have only one codec */
2120
2121      __ac97_ok2:
2122#endif
2123
2124        if (chip->chip_type == TYPE_VIA686) {
2125                /* route FM trap to IRQ, disable FM trap */
2126                pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2127                /* disable all GPI interrupts */
2128                outl(0, VIAREG(chip, GPI_INTR));
2129        }
2130
2131        if (chip->chip_type != TYPE_VIA686) {
2132                /* Workaround for Award BIOS bug:
2133                 * DXS channels don't work properly with VRA if MC97 is disabled.
2134                 */
2135                struct pci_dev *pci;
2136                pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2137                if (pci) {
2138                        unsigned char data;
2139                        pci_read_config_byte(pci, 0x44, &data);
2140                        pci_write_config_byte(pci, 0x44, data | 0x40);
2141                        pci_dev_put(pci);
2142                }
2143        }
2144
2145        if (chip->chip_type != TYPE_VIA8233A) {
2146                int i, idx;
2147                for (idx = 0; idx < 4; idx++) {
2148                        unsigned long port = chip->port + 0x10 * idx;
2149                        for (i = 0; i < 2; i++) {
2150                                chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2151                                outb(chip->playback_volume_c[i],
2152                                     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2153                        }
2154                }
2155        }
2156
2157        return 0;
2158}
2159
2160#ifdef CONFIG_PM
2161/*
2162 * power management
2163 */
2164static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2165{
2166        struct snd_card *card = pci_get_drvdata(pci);
2167        struct via82xx *chip = card->private_data;
2168        int i;
2169
2170        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2171        for (i = 0; i < 2; i++)
2172                snd_pcm_suspend_all(chip->pcms[i]);
2173        for (i = 0; i < chip->num_devs; i++)
2174                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2175        synchronize_irq(chip->irq);
2176        snd_ac97_suspend(chip->ac97);
2177
2178        /* save misc values */
2179        if (chip->chip_type != TYPE_VIA686) {
2180                pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2181                chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2182                chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2183        }
2184
2185        pci_disable_device(pci);
2186        pci_save_state(pci);
2187        pci_set_power_state(pci, pci_choose_state(pci, state));
2188        return 0;
2189}
2190
2191static int snd_via82xx_resume(struct pci_dev *pci)
2192{
2193        struct snd_card *card = pci_get_drvdata(pci);
2194        struct via82xx *chip = card->private_data;
2195        int i;
2196
2197        pci_set_power_state(pci, PCI_D0);
2198        pci_restore_state(pci);
2199        if (pci_enable_device(pci) < 0) {
2200                printk(KERN_ERR "via82xx: pci_enable_device failed, "
2201                       "disabling device\n");
2202                snd_card_disconnect(card);
2203                return -EIO;
2204        }
2205        pci_set_master(pci);
2206
2207        snd_via82xx_chip_init(chip);
2208
2209        if (chip->chip_type == TYPE_VIA686) {
2210                if (chip->mpu_port_saved)
2211                        pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2212                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2213                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2214        } else {
2215                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2216                outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2217                outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2218        }
2219
2220        snd_ac97_resume(chip->ac97);
2221
2222        for (i = 0; i < chip->num_devs; i++)
2223                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2224
2225        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2226        return 0;
2227}
2228#endif /* CONFIG_PM */
2229
2230static int snd_via82xx_free(struct via82xx *chip)
2231{
2232        unsigned int i;
2233
2234        if (chip->irq < 0)
2235                goto __end_hw;
2236        /* disable interrupts */
2237        for (i = 0; i < chip->num_devs; i++)
2238                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2239
2240        if (chip->irq >= 0)
2241                free_irq(chip->irq, chip);
2242 __end_hw:
2243        release_and_free_resource(chip->mpu_res);
2244        pci_release_regions(chip->pci);
2245
2246        if (chip->chip_type == TYPE_VIA686) {
2247                snd_via686_free_gameport(chip);
2248                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2249                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2250        }
2251        pci_disable_device(chip->pci);
2252        kfree(chip);
2253        return 0;
2254}
2255
2256static int snd_via82xx_dev_free(struct snd_device *device)
2257{
2258        struct via82xx *chip = device->device_data;
2259        return snd_via82xx_free(chip);
2260}
2261
2262static int __devinit snd_via82xx_create(struct snd_card *card,
2263                                        struct pci_dev *pci,
2264                                        int chip_type,
2265                                        int revision,
2266                                        unsigned int ac97_clock,
2267                                        struct via82xx ** r_via)
2268{
2269        struct via82xx *chip;
2270        int err;
2271        static struct snd_device_ops ops = {
2272                .dev_free =     snd_via82xx_dev_free,
2273        };
2274
2275        if ((err = pci_enable_device(pci)) < 0)
2276                return err;
2277
2278        if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2279                pci_disable_device(pci);
2280                return -ENOMEM;
2281        }
2282
2283        chip->chip_type = chip_type;
2284        chip->revision = revision;
2285
2286        spin_lock_init(&chip->reg_lock);
2287        spin_lock_init(&chip->rates[0].lock);
2288        spin_lock_init(&chip->rates[1].lock);
2289        chip->card = card;
2290        chip->pci = pci;
2291        chip->irq = -1;
2292
2293        pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2294        pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2295        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2296                              chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2297
2298        if ((err = pci_request_regions(pci, card->driver)) < 0) {
2299                kfree(chip);
2300                pci_disable_device(pci);
2301                return err;
2302        }
2303        chip->port = pci_resource_start(pci, 0);
2304        if (request_irq(pci->irq,
2305                        chip_type == TYPE_VIA8233 ?
2306                        snd_via8233_interrupt : snd_via686_interrupt,
2307                        IRQF_SHARED,
2308                        card->driver, chip)) {
2309                snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2310                snd_via82xx_free(chip);
2311                return -EBUSY;
2312        }
2313        chip->irq = pci->irq;
2314        if (ac97_clock >= 8000 && ac97_clock <= 48000)
2315                chip->ac97_clock = ac97_clock;
2316        synchronize_irq(chip->irq);
2317
2318        if ((err = snd_via82xx_chip_init(chip)) < 0) {
2319                snd_via82xx_free(chip);
2320                return err;
2321        }
2322
2323        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2324                snd_via82xx_free(chip);
2325                return err;
2326        }
2327
2328        /* The 8233 ac97 controller does not implement the master bit
2329         * in the pci command register. IMHO this is a violation of the PCI spec.
2330         * We call pci_set_master here because it does not hurt. */
2331        pci_set_master(pci);
2332
2333        snd_card_set_dev(card, &pci->dev);
2334
2335        *r_via = chip;
2336        return 0;
2337}
2338
2339struct via823x_info {
2340        int revision;
2341        char *name;
2342        int type;
2343};
2344static struct via823x_info via823x_cards[] __devinitdata = {
2345        { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2346        { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2347        { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2348        { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2349        { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2350        { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2351        { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2352};
2353
2354/*
2355 * auto detection of DXS channel supports.
2356 */
2357
2358static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2359        SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2360        SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2361        SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2362        SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2363        SND_PCI_QUIRK(0x1019, 0, "ESC K8", VIA_DXS_SRC),
2364        SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2365        SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2366        SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2367        SND_PCI_QUIRK(0x1043, 0, "ASUS A7/A8", VIA_DXS_NO_VRA),
2368        SND_PCI_QUIRK(0x1071, 0, "Diverse Notebook", VIA_DXS_NO_VRA),
2369        SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2370        SND_PCI_QUIRK(0x1106, 0, "ASRock", VIA_DXS_SRC),
2371        SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2372        SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2373        SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2374        SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2375        SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2376        SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2377        SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2378        SND_PCI_QUIRK(0x1462, 0, "MSI Mobo", VIA_DXS_SRC),
2379        SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2380        SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2381        SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2382        SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2383        SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2384        SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2385        SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2386        SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2387        SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2388        SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2389        SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2390        SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2391        SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2392        SND_PCI_QUIRK(0x1695, 0, "EPoX mobo", VIA_DXS_SRC),
2393        SND_PCI_QUIRK(0x16f3, 0, "Jetway K8", VIA_DXS_SRC),
2394        SND_PCI_QUIRK(0x1734, 0, "FSC Laptop", VIA_DXS_SRC),
2395        SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2396        SND_PCI_QUIRK(0x1849, 0, "ASRock mobo", VIA_DXS_SRC),
2397        SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2398        SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2399        { } /* terminator */
2400};
2401
2402static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2403{
2404        const struct snd_pci_quirk *w;
2405
2406        w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2407        if (w) {
2408                snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2409                            w->name);
2410                return w->value;
2411        }
2412
2413        /* for newer revision, default to DXS_SRC */
2414        if (revision >= VIA_REV_8235)
2415                return VIA_DXS_SRC;
2416
2417        /*
2418         * not detected, try 48k rate only to be sure.
2419         */
2420        printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2421        printk(KERN_INFO "         Please try dxs_support=5 option\n");
2422        printk(KERN_INFO "         and report if it works on your machine.\n");
2423        printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2424        return VIA_DXS_48K;
2425};
2426
2427static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2428                                       const struct pci_device_id *pci_id)
2429{
2430        struct snd_card *card;
2431        struct via82xx *chip;
2432        int chip_type = 0, card_type;
2433        unsigned int i;
2434        int err;
2435
2436        card = snd_card_new(index, id, THIS_MODULE, 0);
2437        if (card == NULL)
2438                return -ENOMEM;
2439
2440        card_type = pci_id->driver_data;
2441        switch (card_type) {
2442        case TYPE_CARD_VIA686:
2443                strcpy(card->driver, "VIA686A");
2444                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2445                chip_type = TYPE_VIA686;
2446                break;
2447        case TYPE_CARD_VIA8233:
2448                chip_type = TYPE_VIA8233;
2449                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2450                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2451                        if (pci->revision == via823x_cards[i].revision) {
2452                                chip_type = via823x_cards[i].type;
2453                                strcpy(card->shortname, via823x_cards[i].name);
2454                                break;
2455                        }
2456                }
2457                if (chip_type != TYPE_VIA8233A) {
2458                        if (dxs_support == VIA_DXS_AUTO)
2459                                dxs_support = check_dxs_list(pci, pci->revision);
2460                        /* force to use VIA8233 or 8233A model according to
2461                         * dxs_support module option
2462                         */
2463                        if (dxs_support == VIA_DXS_DISABLE)
2464                                chip_type = TYPE_VIA8233A;
2465                        else
2466                                chip_type = TYPE_VIA8233;
2467                }
2468                if (chip_type == TYPE_VIA8233A)
2469                        strcpy(card->driver, "VIA8233A");
2470                else if (pci->revision >= VIA_REV_8237)
2471                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
2472                else
2473                        strcpy(card->driver, "VIA8233");
2474                break;
2475        default:
2476                snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2477                err = -EINVAL;
2478                goto __error;
2479        }
2480                
2481        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2482                                      ac97_clock, &chip)) < 0)
2483                goto __error;
2484        card->private_data = chip;
2485        if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2486                goto __error;
2487
2488        if (chip_type == TYPE_VIA686) {
2489                if ((err = snd_via686_pcm_new(chip)) < 0 ||
2490                    (err = snd_via686_init_misc(chip)) < 0)
2491                        goto __error;
2492        } else {
2493                if (chip_type == TYPE_VIA8233A) {
2494                        if ((err = snd_via8233a_pcm_new(chip)) < 0)
2495                                goto __error;
2496                        // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2497                } else {
2498                        if ((err = snd_via8233_pcm_new(chip)) < 0)
2499                                goto __error;
2500                        if (dxs_support == VIA_DXS_48K)
2501                                chip->dxs_fixed = 1;
2502                        else if (dxs_support == VIA_DXS_NO_VRA)
2503                                chip->no_vra = 1;
2504                        else if (dxs_support == VIA_DXS_SRC) {
2505                                chip->no_vra = 1;
2506                                chip->dxs_src = 1;
2507                        }
2508                }
2509                if ((err = snd_via8233_init_misc(chip)) < 0)
2510                        goto __error;
2511        }
2512
2513        /* disable interrupts */
2514        for (i = 0; i < chip->num_devs; i++)
2515                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2516
2517        snprintf(card->longname, sizeof(card->longname),
2518                 "%s with %s at %#lx, irq %d", card->shortname,
2519                 snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2520
2521        snd_via82xx_proc_init(chip);
2522
2523        if ((err = snd_card_register(card)) < 0) {
2524                snd_card_free(card);
2525                return err;
2526        }
2527        pci_set_drvdata(pci, card);
2528        return 0;
2529
2530 __error:
2531        snd_card_free(card);
2532        return err;
2533}
2534
2535static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2536{
2537        snd_card_free(pci_get_drvdata(pci));
2538        pci_set_drvdata(pci, NULL);
2539}
2540
2541static struct pci_driver driver = {
2542        .name = "VIA 82xx Audio",
2543        .id_table = snd_via82xx_ids,
2544        .probe = snd_via82xx_probe,
2545        .remove = __devexit_p(snd_via82xx_remove),
2546#ifdef CONFIG_PM
2547        .suspend = snd_via82xx_suspend,
2548        .resume = snd_via82xx_resume,
2549#endif
2550};
2551
2552static int __init alsa_card_via82xx_init(void)
2553{
2554        return pci_register_driver(&driver);
2555}
2556
2557static void __exit alsa_card_via82xx_exit(void)
2558{
2559        pci_unregister_driver(&driver);
2560}
2561
2562module_init(alsa_card_via82xx_init)
2563module_exit(alsa_card_via82xx_exit)
2564