linux/sound/pci/via82xx.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *   ALSA driver for VIA VT82xx (South Bridge)
   4 *
   5 *   VT82C686A/B/C, VT8233A/C, VT8235
   6 *
   7 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   8 *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
   9 *                    2002 Takashi Iwai <tiwai@suse.de>
  10 */
  11
  12/*
  13 * Changes:
  14 *
  15 * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
  16 *      - use the DSX channels for the first pcm playback.
  17 *        (on VIA8233, 8233C and 8235 only)
  18 *        this will allow you play simultaneously up to 4 streams.
  19 *        multi-channel playback is assigned to the second device
  20 *        on these chips.
  21 *      - support the secondary capture (on VIA8233/C,8235)
  22 *      - SPDIF support
  23 *        the DSX3 channel can be used for SPDIF output.
  24 *        on VIA8233A, this channel is assigned to the second pcm
  25 *        playback.
  26 *        the card config of alsa-lib will assign the correct
  27 *        device for applications.
  28 *      - clean up the code, separate low-level initialization
  29 *        routines for each chipset.
  30 *
  31 * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
  32 *      - Optimize position calculation for the 823x chips. 
  33 */
  34
  35#include <linux/io.h>
  36#include <linux/delay.h>
  37#include <linux/interrupt.h>
  38#include <linux/init.h>
  39#include <linux/pci.h>
  40#include <linux/slab.h>
  41#include <linux/gameport.h>
  42#include <linux/module.h>
  43#include <sound/core.h>
  44#include <sound/pcm.h>
  45#include <sound/pcm_params.h>
  46#include <sound/info.h>
  47#include <sound/tlv.h>
  48#include <sound/ac97_codec.h>
  49#include <sound/mpu401.h>
  50#include <sound/initval.h>
  51
  52#if 0
  53#define POINTER_DEBUG
  54#endif
  55
  56MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  57MODULE_DESCRIPTION("VIA VT82xx audio");
  58MODULE_LICENSE("GPL");
  59MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
  60
  61#if IS_REACHABLE(CONFIG_GAMEPORT)
  62#define SUPPORT_JOYSTICK 1
  63#endif
  64
  65static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  66static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  67static long mpu_port;
  68#ifdef SUPPORT_JOYSTICK
  69static bool joystick;
  70#endif
  71static int ac97_clock = 48000;
  72static char *ac97_quirk;
  73static int dxs_support;
  74static int dxs_init_volume = 31;
  75static int nodelay;
  76
  77module_param(index, int, 0444);
  78MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  79module_param(id, charp, 0444);
  80MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  81module_param_hw(mpu_port, long, ioport, 0444);
  82MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  83#ifdef SUPPORT_JOYSTICK
  84module_param(joystick, bool, 0444);
  85MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  86#endif
  87module_param(ac97_clock, int, 0444);
  88MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
  89module_param(ac97_quirk, charp, 0444);
  90MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
  91module_param(dxs_support, int, 0444);
  92MODULE_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)");
  93module_param(dxs_init_volume, int, 0644);
  94MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
  95module_param(nodelay, int, 0444);
  96MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
  97
  98/* just for backward compatibility */
  99static bool enable;
 100module_param(enable, bool, 0444);
 101
 102
 103/* revision numbers for via686 */
 104#define VIA_REV_686_A           0x10
 105#define VIA_REV_686_B           0x11
 106#define VIA_REV_686_C           0x12
 107#define VIA_REV_686_D           0x13
 108#define VIA_REV_686_E           0x14
 109#define VIA_REV_686_H           0x20
 110
 111/* revision numbers for via8233 */
 112#define VIA_REV_PRE_8233        0x10    /* not in market */
 113#define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 114#define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 115#define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 116#define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 117#define VIA_REV_8237            0x60
 118#define VIA_REV_8251            0x70
 119
 120/*
 121 *  Direct registers
 122 */
 123
 124#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 125#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 126
 127/* common offsets */
 128#define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 129#define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 130#define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 131#define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 132#define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 133#define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 134#define   VIA_REG_STAT_EOL              0x02    /* RWC */
 135#define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 136#define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 137#define   VIA_REG_CTRL_START            0x80    /* WO */
 138#define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 139#define   VIA_REG_CTRL_AUTOSTART        0x20
 140#define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 141#define   VIA_REG_CTRL_INT_STOP         0x04            
 142#define   VIA_REG_CTRL_INT_EOL          0x02
 143#define   VIA_REG_CTRL_INT_FLAG         0x01
 144#define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 145#define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 146#define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 147#define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 148#define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 149#define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 150#define   VIA_REG_TYPE_INT_LLINE        0x00
 151#define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 152#define   VIA_REG_TYPE_INT_LESSONE      0x08
 153#define   VIA_REG_TYPE_INT_MASK         0x0c
 154#define   VIA_REG_TYPE_INT_EOL          0x02
 155#define   VIA_REG_TYPE_INT_FLAG         0x01
 156#define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 157#define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 158#define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 159#define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 160#define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 161#define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 162#define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 163
 164#define DEFINE_VIA_REGSET(name,val) \
 165enum {\
 166        VIA_REG_##name##_STATUS         = (val),\
 167        VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 168        VIA_REG_##name##_TYPE           = (val) + 0x02,\
 169        VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 170        VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 171        VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 172        VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 173}
 174
 175/* playback block */
 176DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 177DEFINE_VIA_REGSET(CAPTURE, 0x10);
 178DEFINE_VIA_REGSET(FM, 0x20);
 179
 180/* AC'97 */
 181#define VIA_REG_AC97                    0x80    /* dword */
 182#define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 183#define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 184#define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 185#define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 186#define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 187#define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 188#define   VIA_REG_AC97_BUSY             (1<<24)
 189#define   VIA_REG_AC97_READ             (1<<23)
 190#define   VIA_REG_AC97_CMD_SHIFT        16
 191#define   VIA_REG_AC97_CMD_MASK         0x7e
 192#define   VIA_REG_AC97_DATA_SHIFT       0
 193#define   VIA_REG_AC97_DATA_MASK        0xffff
 194
 195#define VIA_REG_SGD_SHADOW              0x84    /* dword */
 196/* via686 */
 197#define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 198#define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 199#define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 200#define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 201#define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 202#define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 203#define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 204#define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 205#define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 206#define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 207#define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 208#define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 209/* via8233 */
 210#define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 211#define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 212#define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 213#define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 214#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 215#define   VIA8233_REG_SGD_CHAN_SDX      0
 216#define   VIA8233_REG_SGD_CHAN_MULTI    4
 217#define   VIA8233_REG_SGD_CHAN_REC      6
 218#define   VIA8233_REG_SGD_CHAN_REC1     7
 219
 220#define VIA_REG_GPI_STATUS              0x88
 221#define VIA_REG_GPI_INTR                0x8c
 222
 223/* multi-channel and capture registers for via8233 */
 224DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 225DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 226
 227/* via8233-specific registers */
 228#define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 229#define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 230#define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 231#define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 232#define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 233#define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 234#define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 235#define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 236
 237#define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 238
 239#define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 240#define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 241#define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 242#define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 243
 244#define VIA_TBL_BIT_FLAG        0x40000000
 245#define VIA_TBL_BIT_EOL         0x80000000
 246
 247/* pci space */
 248#define VIA_ACLINK_STAT         0x40
 249#define  VIA_ACLINK_C11_READY   0x20
 250#define  VIA_ACLINK_C10_READY   0x10
 251#define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 252#define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 253#define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 254#define VIA_ACLINK_CTRL         0x41
 255#define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 256#define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 257#define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 258#define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 259#define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 260#define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 261#define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 262#define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 263#define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 264                                 VIA_ACLINK_CTRL_RESET|\
 265                                 VIA_ACLINK_CTRL_PCM|\
 266                                 VIA_ACLINK_CTRL_VRA)
 267#define VIA_FUNC_ENABLE         0x42
 268#define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 269#define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 270#define  VIA_FUNC_RX2C_WRITE    0x20
 271#define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 272#define  VIA_FUNC_ENABLE_GAME   0x08
 273#define  VIA_FUNC_ENABLE_FM     0x04
 274#define  VIA_FUNC_ENABLE_MIDI   0x02
 275#define  VIA_FUNC_ENABLE_SB     0x01
 276#define VIA_PNP_CONTROL         0x43
 277#define VIA_FM_NMI_CTRL         0x48
 278#define VIA8233_VOLCHG_CTRL     0x48
 279#define VIA8233_SPDIF_CTRL      0x49
 280#define  VIA8233_SPDIF_DX3      0x08
 281#define  VIA8233_SPDIF_SLOT_MASK        0x03
 282#define  VIA8233_SPDIF_SLOT_1011        0x00
 283#define  VIA8233_SPDIF_SLOT_34          0x01
 284#define  VIA8233_SPDIF_SLOT_78          0x02
 285#define  VIA8233_SPDIF_SLOT_69          0x03
 286
 287/*
 288 */
 289
 290#define VIA_DXS_AUTO    0
 291#define VIA_DXS_ENABLE  1
 292#define VIA_DXS_DISABLE 2
 293#define VIA_DXS_48K     3
 294#define VIA_DXS_NO_VRA  4
 295#define VIA_DXS_SRC     5
 296
 297
 298/*
 299 * pcm stream
 300 */
 301
 302struct snd_via_sg_table {
 303        unsigned int offset;
 304        unsigned int size;
 305} ;
 306
 307#define VIA_TABLE_SIZE  255
 308#define VIA_MAX_BUFSIZE (1<<24)
 309
 310struct viadev {
 311        unsigned int reg_offset;
 312        unsigned long port;
 313        int direction;  /* playback = 0, capture = 1 */
 314        struct snd_pcm_substream *substream;
 315        int running;
 316        unsigned int tbl_entries; /* # descriptors */
 317        struct snd_dma_buffer table;
 318        struct snd_via_sg_table *idx_table;
 319        /* for recovery from the unexpected pointer */
 320        unsigned int lastpos;
 321        unsigned int fragsize;
 322        unsigned int bufsize;
 323        unsigned int bufsize2;
 324        int hwptr_done;         /* processed frame position in the buffer */
 325        int in_interrupt;
 326        int shadow_shift;
 327};
 328
 329
 330enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 331enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 332
 333#define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 334
 335struct via_rate_lock {
 336        spinlock_t lock;
 337        int rate;
 338        int used;
 339};
 340
 341struct via82xx {
 342        int irq;
 343
 344        unsigned long port;
 345        struct resource *mpu_res;
 346        int chip_type;
 347        unsigned char revision;
 348
 349        unsigned char old_legacy;
 350        unsigned char old_legacy_cfg;
 351#ifdef CONFIG_PM_SLEEP
 352        unsigned char legacy_saved;
 353        unsigned char legacy_cfg_saved;
 354        unsigned char spdif_ctrl_saved;
 355        unsigned char capture_src_saved[2];
 356        unsigned int mpu_port_saved;
 357#endif
 358
 359        unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 360        unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 361
 362        unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 363
 364        struct pci_dev *pci;
 365        struct snd_card *card;
 366
 367        unsigned int num_devs;
 368        unsigned int playback_devno, multi_devno, capture_devno;
 369        struct viadev devs[VIA_MAX_DEVS];
 370        struct via_rate_lock rates[2]; /* playback and capture */
 371        unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 372        unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 373        unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 374        unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 375
 376        struct snd_pcm *pcms[2];
 377        struct snd_rawmidi *rmidi;
 378        struct snd_kcontrol *dxs_controls[4];
 379
 380        struct snd_ac97_bus *ac97_bus;
 381        struct snd_ac97 *ac97;
 382        unsigned int ac97_clock;
 383        unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 384
 385        spinlock_t reg_lock;
 386        struct snd_info_entry *proc_entry;
 387
 388#ifdef SUPPORT_JOYSTICK
 389        struct gameport *gameport;
 390#endif
 391};
 392
 393static const struct pci_device_id snd_via82xx_ids[] = {
 394        /* 0x1106, 0x3058 */
 395        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 396        /* 0x1106, 0x3059 */
 397        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 398        { 0, }
 399};
 400
 401MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 402
 403/*
 404 */
 405
 406/*
 407 * allocate and initialize the descriptor buffers
 408 * periods = number of periods
 409 * fragsize = period size in bytes
 410 */
 411static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 412                           struct pci_dev *pci,
 413                           unsigned int periods, unsigned int fragsize)
 414{
 415        unsigned int i, idx, ofs, rest;
 416        struct via82xx *chip = snd_pcm_substream_chip(substream);
 417        __le32 *pgtbl;
 418
 419        if (dev->table.area == NULL) {
 420                /* the start of each lists must be aligned to 8 bytes,
 421                 * but the kernel pages are much bigger, so we don't care
 422                 */
 423                if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
 424                                        PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 425                                        &dev->table) < 0)
 426                        return -ENOMEM;
 427        }
 428        if (! dev->idx_table) {
 429                dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
 430                                               sizeof(*dev->idx_table),
 431                                               GFP_KERNEL);
 432                if (! dev->idx_table)
 433                        return -ENOMEM;
 434        }
 435
 436        /* fill the entries */
 437        idx = 0;
 438        ofs = 0;
 439        pgtbl = (__le32 *)dev->table.area;
 440        for (i = 0; i < periods; i++) {
 441                rest = fragsize;
 442                /* fill descriptors for a period.
 443                 * a period can be split to several descriptors if it's
 444                 * over page boundary.
 445                 */
 446                do {
 447                        unsigned int r;
 448                        unsigned int flag;
 449                        unsigned int addr;
 450
 451                        if (idx >= VIA_TABLE_SIZE) {
 452                                dev_err(&pci->dev, "too much table size!\n");
 453                                return -EINVAL;
 454                        }
 455                        addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 456                        pgtbl[idx << 1] = cpu_to_le32(addr);
 457                        r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 458                        rest -= r;
 459                        if (! rest) {
 460                                if (i == periods - 1)
 461                                        flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 462                                else
 463                                        flag = VIA_TBL_BIT_FLAG; /* period boundary */
 464                        } else
 465                                flag = 0; /* period continues to the next */
 466                        /*
 467                        dev_dbg(&pci->dev,
 468                                "tbl %d: at %d  size %d (rest %d)\n",
 469                                idx, ofs, r, rest);
 470                        */
 471                        pgtbl[(idx<<1) + 1] = cpu_to_le32(r | flag);
 472                        dev->idx_table[idx].offset = ofs;
 473                        dev->idx_table[idx].size = r;
 474                        ofs += r;
 475                        idx++;
 476                } while (rest > 0);
 477        }
 478        dev->tbl_entries = idx;
 479        dev->bufsize = periods * fragsize;
 480        dev->bufsize2 = dev->bufsize / 2;
 481        dev->fragsize = fragsize;
 482        return 0;
 483}
 484
 485
 486static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 487                           struct pci_dev *pci)
 488{
 489        if (dev->table.area) {
 490                snd_dma_free_pages(&dev->table);
 491                dev->table.area = NULL;
 492        }
 493        kfree(dev->idx_table);
 494        dev->idx_table = NULL;
 495        return 0;
 496}
 497
 498/*
 499 *  Basic I/O
 500 */
 501
 502static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 503{
 504        return inl(VIAREG(chip, AC97));
 505}
 506 
 507static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 508{
 509        outl(val, VIAREG(chip, AC97));
 510}
 511 
 512static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 513{
 514        unsigned int timeout = 1000;    /* 1ms */
 515        unsigned int val;
 516        
 517        while (timeout-- > 0) {
 518                udelay(1);
 519                if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 520                        return val & 0xffff;
 521        }
 522        dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
 523                   secondary, snd_via82xx_codec_xread(chip));
 524        return -EIO;
 525}
 526 
 527static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 528{
 529        unsigned int timeout = 1000;    /* 1ms */
 530        unsigned int val, val1;
 531        unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 532                                         VIA_REG_AC97_SECONDARY_VALID;
 533        
 534        while (timeout-- > 0) {
 535                val = snd_via82xx_codec_xread(chip);
 536                val1 = val & (VIA_REG_AC97_BUSY | stat);
 537                if (val1 == stat)
 538                        return val & 0xffff;
 539                udelay(1);
 540        }
 541        return -EIO;
 542}
 543 
 544static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 545{
 546        struct via82xx *chip = ac97->private_data;
 547        __always_unused int err;
 548        err = snd_via82xx_codec_ready(chip, ac97->num);
 549        /* here we need to wait fairly for long time.. */
 550        if (!nodelay)
 551                msleep(500);
 552}
 553
 554static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 555                                    unsigned short reg,
 556                                    unsigned short val)
 557{
 558        struct via82xx *chip = ac97->private_data;
 559        unsigned int xval;
 560
 561        xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 562        xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 563        xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 564        xval |= val << VIA_REG_AC97_DATA_SHIFT;
 565        snd_via82xx_codec_xwrite(chip, xval);
 566        snd_via82xx_codec_ready(chip, ac97->num);
 567}
 568
 569static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 570{
 571        struct via82xx *chip = ac97->private_data;
 572        unsigned int xval, val = 0xffff;
 573        int again = 0;
 574
 575        xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 576        xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 577        xval |= VIA_REG_AC97_READ;
 578        xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 579        while (1) {
 580                if (again++ > 3) {
 581                        dev_err(chip->card->dev,
 582                                "codec_read: codec %i is not valid [0x%x]\n",
 583                                   ac97->num, snd_via82xx_codec_xread(chip));
 584                        return 0xffff;
 585                }
 586                snd_via82xx_codec_xwrite(chip, xval);
 587                udelay (20);
 588                if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 589                        udelay(25);
 590                        val = snd_via82xx_codec_xread(chip);
 591                        break;
 592                }
 593        }
 594        return val & 0xffff;
 595}
 596
 597static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 598{
 599        outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 600             VIADEV_REG(viadev, OFFSET_CONTROL));
 601        inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 602        udelay(50);
 603        /* disable interrupts */
 604        outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 605        /* clear interrupts */
 606        outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 607        outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 608        // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 609        viadev->lastpos = 0;
 610        viadev->hwptr_done = 0;
 611}
 612
 613
 614/*
 615 *  Interrupt handler
 616 *  Used for 686 and 8233A
 617 */
 618static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 619{
 620        struct via82xx *chip = dev_id;
 621        unsigned int status;
 622        unsigned int i;
 623
 624        status = inl(VIAREG(chip, SGD_SHADOW));
 625        if (! (status & chip->intr_mask)) {
 626                if (chip->rmidi)
 627                        /* check mpu401 interrupt */
 628                        return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 629                return IRQ_NONE;
 630        }
 631
 632        /* check status for each stream */
 633        spin_lock(&chip->reg_lock);
 634        for (i = 0; i < chip->num_devs; i++) {
 635                struct viadev *viadev = &chip->devs[i];
 636                unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 637                if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 638                        continue;
 639                if (viadev->substream && viadev->running) {
 640                        /*
 641                         * Update hwptr_done based on 'period elapsed'
 642                         * interrupts. We'll use it, when the chip returns 0 
 643                         * for OFFSET_CURR_COUNT.
 644                         */
 645                        if (c_status & VIA_REG_STAT_EOL)
 646                                viadev->hwptr_done = 0;
 647                        else
 648                                viadev->hwptr_done += viadev->fragsize;
 649                        viadev->in_interrupt = c_status;
 650                        spin_unlock(&chip->reg_lock);
 651                        snd_pcm_period_elapsed(viadev->substream);
 652                        spin_lock(&chip->reg_lock);
 653                        viadev->in_interrupt = 0;
 654                }
 655                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 656        }
 657        spin_unlock(&chip->reg_lock);
 658        return IRQ_HANDLED;
 659}
 660
 661/*
 662 *  Interrupt handler
 663 */
 664static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 665{
 666        struct via82xx *chip = dev_id;
 667        unsigned int status;
 668        unsigned int i;
 669        int irqreturn = 0;
 670
 671        /* check status for each stream */
 672        spin_lock(&chip->reg_lock);
 673        status = inl(VIAREG(chip, SGD_SHADOW));
 674
 675        for (i = 0; i < chip->num_devs; i++) {
 676                struct viadev *viadev = &chip->devs[i];
 677                struct snd_pcm_substream *substream;
 678                unsigned char c_status, shadow_status;
 679
 680                shadow_status = (status >> viadev->shadow_shift) &
 681                        (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 682                         VIA_REG_STAT_FLAG);
 683                c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 684                if (!c_status)
 685                        continue;
 686
 687                substream = viadev->substream;
 688                if (substream && viadev->running) {
 689                        /*
 690                         * Update hwptr_done based on 'period elapsed'
 691                         * interrupts. We'll use it, when the chip returns 0 
 692                         * for OFFSET_CURR_COUNT.
 693                         */
 694                        if (c_status & VIA_REG_STAT_EOL)
 695                                viadev->hwptr_done = 0;
 696                        else
 697                                viadev->hwptr_done += viadev->fragsize;
 698                        viadev->in_interrupt = c_status;
 699                        if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 700                                viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 701                        spin_unlock(&chip->reg_lock);
 702
 703                        snd_pcm_period_elapsed(substream);
 704
 705                        spin_lock(&chip->reg_lock);
 706                        viadev->in_interrupt = 0;
 707                }
 708                outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 709                irqreturn = 1;
 710        }
 711        spin_unlock(&chip->reg_lock);
 712        return IRQ_RETVAL(irqreturn);
 713}
 714
 715/*
 716 *  PCM callbacks
 717 */
 718
 719/*
 720 * trigger callback
 721 */
 722static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 723{
 724        struct via82xx *chip = snd_pcm_substream_chip(substream);
 725        struct viadev *viadev = substream->runtime->private_data;
 726        unsigned char val;
 727
 728        if (chip->chip_type != TYPE_VIA686)
 729                val = VIA_REG_CTRL_INT;
 730        else
 731                val = 0;
 732        switch (cmd) {
 733        case SNDRV_PCM_TRIGGER_START:
 734        case SNDRV_PCM_TRIGGER_RESUME:
 735                val |= VIA_REG_CTRL_START;
 736                viadev->running = 1;
 737                break;
 738        case SNDRV_PCM_TRIGGER_STOP:
 739        case SNDRV_PCM_TRIGGER_SUSPEND:
 740                val = VIA_REG_CTRL_TERMINATE;
 741                viadev->running = 0;
 742                break;
 743        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 744                val |= VIA_REG_CTRL_PAUSE;
 745                viadev->running = 0;
 746                break;
 747        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 748                viadev->running = 1;
 749                break;
 750        default:
 751                return -EINVAL;
 752        }
 753        outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 754        if (cmd == SNDRV_PCM_TRIGGER_STOP)
 755                snd_via82xx_channel_reset(chip, viadev);
 756        return 0;
 757}
 758
 759
 760/*
 761 * pointer callbacks
 762 */
 763
 764/*
 765 * calculate the linear position at the given sg-buffer index and the rest count
 766 */
 767
 768#define check_invalid_pos(viadev,pos) \
 769        ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 770                                     viadev->lastpos < viadev->bufsize2))
 771
 772static inline unsigned int calc_linear_pos(struct via82xx *chip,
 773                                           struct viadev *viadev,
 774                                           unsigned int idx,
 775                                           unsigned int count)
 776{
 777        unsigned int size, base, res;
 778
 779        size = viadev->idx_table[idx].size;
 780        base = viadev->idx_table[idx].offset;
 781        res = base + size - count;
 782        if (res >= viadev->bufsize)
 783                res -= viadev->bufsize;
 784
 785        /* check the validity of the calculated position */
 786        if (size < count) {
 787                dev_dbg(chip->card->dev,
 788                        "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 789                           (int)size, (int)count);
 790                res = viadev->lastpos;
 791        } else {
 792                if (! count) {
 793                        /* Some mobos report count = 0 on the DMA boundary,
 794                         * i.e. count = size indeed.
 795                         * Let's check whether this step is above the expected size.
 796                         */
 797                        int delta = res - viadev->lastpos;
 798                        if (delta < 0)
 799                                delta += viadev->bufsize;
 800                        if ((unsigned int)delta > viadev->fragsize)
 801                                res = base;
 802                }
 803                if (check_invalid_pos(viadev, res)) {
 804#ifdef POINTER_DEBUG
 805                        dev_dbg(chip->card->dev,
 806                                "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
 807                                idx, viadev->tbl_entries,
 808                               viadev->lastpos, viadev->bufsize2,
 809                               viadev->idx_table[idx].offset,
 810                               viadev->idx_table[idx].size, count);
 811#endif
 812                        /* count register returns full size when end of buffer is reached */
 813                        res = base + size;
 814                        if (check_invalid_pos(viadev, res)) {
 815                                dev_dbg(chip->card->dev,
 816                                        "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 817                                res = viadev->lastpos;
 818                        }
 819                }
 820        }
 821        return res;
 822}
 823
 824/*
 825 * get the current pointer on via686
 826 */
 827static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 828{
 829        struct via82xx *chip = snd_pcm_substream_chip(substream);
 830        struct viadev *viadev = substream->runtime->private_data;
 831        unsigned int idx, ptr, count, res;
 832
 833        if (snd_BUG_ON(!viadev->tbl_entries))
 834                return 0;
 835        if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 836                return 0;
 837
 838        spin_lock(&chip->reg_lock);
 839        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 840        /* The via686a does not have the current index register,
 841         * so we need to calculate the index from CURR_PTR.
 842         */
 843        ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 844        if (ptr <= (unsigned int)viadev->table.addr)
 845                idx = 0;
 846        else /* CURR_PTR holds the address + 8 */
 847                idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 848        res = calc_linear_pos(chip, viadev, idx, count);
 849        viadev->lastpos = res; /* remember the last position */
 850        spin_unlock(&chip->reg_lock);
 851
 852        return bytes_to_frames(substream->runtime, res);
 853}
 854
 855/*
 856 * get the current pointer on via823x
 857 */
 858static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 859{
 860        struct via82xx *chip = snd_pcm_substream_chip(substream);
 861        struct viadev *viadev = substream->runtime->private_data;
 862        unsigned int idx, count, res;
 863        int status;
 864        
 865        if (snd_BUG_ON(!viadev->tbl_entries))
 866                return 0;
 867
 868        spin_lock(&chip->reg_lock);
 869        count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 870        status = viadev->in_interrupt;
 871        if (!status)
 872                status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 873
 874        /* An apparent bug in the 8251 is worked around by sending a 
 875         * REG_CTRL_START. */
 876        if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 877                snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 878
 879        if (!(status & VIA_REG_STAT_ACTIVE)) {
 880                res = 0;
 881                goto unlock;
 882        }
 883        if (count & 0xffffff) {
 884                idx = count >> 24;
 885                if (idx >= viadev->tbl_entries) {
 886#ifdef POINTER_DEBUG
 887                        dev_dbg(chip->card->dev,
 888                                "fail: invalid idx = %i/%i\n", idx,
 889                               viadev->tbl_entries);
 890#endif
 891                        res = viadev->lastpos;
 892                } else {
 893                        count &= 0xffffff;
 894                        res = calc_linear_pos(chip, viadev, idx, count);
 895                }
 896        } else {
 897                res = viadev->hwptr_done;
 898                if (!viadev->in_interrupt) {
 899                        if (status & VIA_REG_STAT_EOL) {
 900                                res = 0;
 901                        } else
 902                                if (status & VIA_REG_STAT_FLAG) {
 903                                        res += viadev->fragsize;
 904                                }
 905                }
 906        }                           
 907unlock:
 908        viadev->lastpos = res;
 909        spin_unlock(&chip->reg_lock);
 910
 911        return bytes_to_frames(substream->runtime, res);
 912}
 913
 914
 915/*
 916 * hw_params callback:
 917 * allocate the buffer and build up the buffer description table
 918 */
 919static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 920                                 struct snd_pcm_hw_params *hw_params)
 921{
 922        struct via82xx *chip = snd_pcm_substream_chip(substream);
 923        struct viadev *viadev = substream->runtime->private_data;
 924
 925        return build_via_table(viadev, substream, chip->pci,
 926                               params_periods(hw_params),
 927                               params_period_bytes(hw_params));
 928}
 929
 930/*
 931 * hw_free callback:
 932 * clean up the buffer description table and release the buffer
 933 */
 934static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 935{
 936        struct via82xx *chip = snd_pcm_substream_chip(substream);
 937        struct viadev *viadev = substream->runtime->private_data;
 938
 939        clean_via_table(viadev, substream, chip->pci);
 940        return 0;
 941}
 942
 943
 944/*
 945 * set up the table pointer
 946 */
 947static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 948{
 949        snd_via82xx_codec_ready(chip, 0);
 950        outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 951        udelay(20);
 952        snd_via82xx_codec_ready(chip, 0);
 953}
 954
 955/*
 956 * prepare callback for playback and capture on via686
 957 */
 958static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 959                                struct snd_pcm_runtime *runtime)
 960{
 961        snd_via82xx_channel_reset(chip, viadev);
 962        /* this must be set after channel_reset */
 963        snd_via82xx_set_table_ptr(chip, viadev);
 964        outb(VIA_REG_TYPE_AUTOSTART |
 965             (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 966             (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 967             ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 968             VIA_REG_TYPE_INT_EOL |
 969             VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 970}
 971
 972static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 973{
 974        struct via82xx *chip = snd_pcm_substream_chip(substream);
 975        struct viadev *viadev = substream->runtime->private_data;
 976        struct snd_pcm_runtime *runtime = substream->runtime;
 977
 978        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 979        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 980        via686_setup_format(chip, viadev, runtime);
 981        return 0;
 982}
 983
 984static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 985{
 986        struct via82xx *chip = snd_pcm_substream_chip(substream);
 987        struct viadev *viadev = substream->runtime->private_data;
 988        struct snd_pcm_runtime *runtime = substream->runtime;
 989
 990        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 991        via686_setup_format(chip, viadev, runtime);
 992        return 0;
 993}
 994
 995/*
 996 * lock the current rate
 997 */
 998static int via_lock_rate(struct via_rate_lock *rec, int rate)
 999{
1000        int changed = 0;
1001
1002        spin_lock_irq(&rec->lock);
1003        if (rec->rate != rate) {
1004                if (rec->rate && rec->used > 1) /* already set */
1005                        changed = -EINVAL;
1006                else {
1007                        rec->rate = rate;
1008                        changed = 1;
1009                }
1010        }
1011        spin_unlock_irq(&rec->lock);
1012        return changed;
1013}
1014
1015/*
1016 * prepare callback for DSX playback on via823x
1017 */
1018static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1019{
1020        struct via82xx *chip = snd_pcm_substream_chip(substream);
1021        struct viadev *viadev = substream->runtime->private_data;
1022        struct snd_pcm_runtime *runtime = substream->runtime;
1023        int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1024        int rate_changed;
1025        u32 rbits;
1026
1027        if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1028                return rate_changed;
1029        if (rate_changed)
1030                snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1031                                  chip->no_vra ? 48000 : runtime->rate);
1032        if (chip->spdif_on && viadev->reg_offset == 0x30)
1033                snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1034
1035        if (runtime->rate == 48000)
1036                rbits = 0xfffff;
1037        else
1038                rbits = (0x100000 / 48000) * runtime->rate +
1039                        ((0x100000 % 48000) * runtime->rate) / 48000;
1040        snd_BUG_ON(rbits & ~0xfffff);
1041        snd_via82xx_channel_reset(chip, viadev);
1042        snd_via82xx_set_table_ptr(chip, viadev);
1043        outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1044             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1045        outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1046             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1047        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1048             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1049             rbits | /* rate */
1050             0xff000000,    /* STOP index is never reached */
1051             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1052        udelay(20);
1053        snd_via82xx_codec_ready(chip, 0);
1054        return 0;
1055}
1056
1057/*
1058 * prepare callback for multi-channel playback on via823x
1059 */
1060static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1061{
1062        struct via82xx *chip = snd_pcm_substream_chip(substream);
1063        struct viadev *viadev = substream->runtime->private_data;
1064        struct snd_pcm_runtime *runtime = substream->runtime;
1065        unsigned int slots;
1066        int fmt;
1067
1068        if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1069                return -EINVAL;
1070        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1071        snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1072        snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1073        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1074        snd_via82xx_channel_reset(chip, viadev);
1075        snd_via82xx_set_table_ptr(chip, viadev);
1076
1077        fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1078                VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1079        fmt |= runtime->channels << 4;
1080        outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1081#if 0
1082        if (chip->revision == VIA_REV_8233A)
1083                slots = 0;
1084        else
1085#endif
1086        {
1087                /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1088                /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1089                switch (runtime->channels) {
1090                case 1: slots = (1<<0) | (1<<4); break;
1091                case 2: slots = (1<<0) | (2<<4); break;
1092                case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1093                case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1094                case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1095                case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1096                default: slots = 0; break;
1097                }
1098        }
1099        /* STOP index is never reached */
1100        outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1101        udelay(20);
1102        snd_via82xx_codec_ready(chip, 0);
1103        return 0;
1104}
1105
1106/*
1107 * prepare callback for capture on via823x
1108 */
1109static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1110{
1111        struct via82xx *chip = snd_pcm_substream_chip(substream);
1112        struct viadev *viadev = substream->runtime->private_data;
1113        struct snd_pcm_runtime *runtime = substream->runtime;
1114
1115        if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1116                return -EINVAL;
1117        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1118        snd_via82xx_channel_reset(chip, viadev);
1119        snd_via82xx_set_table_ptr(chip, viadev);
1120        outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1121        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1122             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1123             0xff000000,    /* STOP index is never reached */
1124             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1125        udelay(20);
1126        snd_via82xx_codec_ready(chip, 0);
1127        return 0;
1128}
1129
1130
1131/*
1132 * pcm hardware definition, identical for both playback and capture
1133 */
1134static const struct snd_pcm_hardware snd_via82xx_hw =
1135{
1136        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1137                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1138                                 SNDRV_PCM_INFO_MMAP_VALID |
1139                                 /* SNDRV_PCM_INFO_RESUME | */
1140                                 SNDRV_PCM_INFO_PAUSE),
1141        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1142        .rates =                SNDRV_PCM_RATE_48000,
1143        .rate_min =             48000,
1144        .rate_max =             48000,
1145        .channels_min =         1,
1146        .channels_max =         2,
1147        .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1148        .period_bytes_min =     32,
1149        .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1150        .periods_min =          2,
1151        .periods_max =          VIA_TABLE_SIZE / 2,
1152        .fifo_size =            0,
1153};
1154
1155
1156/*
1157 * open callback skeleton
1158 */
1159static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1160                                struct snd_pcm_substream *substream)
1161{
1162        struct snd_pcm_runtime *runtime = substream->runtime;
1163        int err;
1164        struct via_rate_lock *ratep;
1165        bool use_src = false;
1166
1167        runtime->hw = snd_via82xx_hw;
1168        
1169        /* set the hw rate condition */
1170        ratep = &chip->rates[viadev->direction];
1171        spin_lock_irq(&ratep->lock);
1172        ratep->used++;
1173        if (chip->spdif_on && viadev->reg_offset == 0x30) {
1174                /* DXS#3 and spdif is on */
1175                runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1176                snd_pcm_limit_hw_rates(runtime);
1177        } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1178                /* fixed DXS playback rate */
1179                runtime->hw.rates = SNDRV_PCM_RATE_48000;
1180                runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1181        } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1182                /* use full SRC capabilities of DXS */
1183                runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1184                                     SNDRV_PCM_RATE_8000_48000);
1185                runtime->hw.rate_min = 8000;
1186                runtime->hw.rate_max = 48000;
1187                use_src = true;
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        if (use_src) {
1205                err = snd_pcm_hw_rule_noresample(runtime, 48000);
1206                if (err < 0)
1207                        return err;
1208        }
1209
1210        runtime->private_data = viadev;
1211        viadev->substream = substream;
1212
1213        return 0;
1214}
1215
1216
1217/*
1218 * open callback for playback on via686
1219 */
1220static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1221{
1222        struct via82xx *chip = snd_pcm_substream_chip(substream);
1223        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1224        int err;
1225
1226        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1227                return err;
1228        return 0;
1229}
1230
1231/*
1232 * open callback for playback on via823x DXS
1233 */
1234static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1235{
1236        struct via82xx *chip = snd_pcm_substream_chip(substream);
1237        struct viadev *viadev;
1238        unsigned int stream;
1239        int err;
1240
1241        viadev = &chip->devs[chip->playback_devno + substream->number];
1242        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1243                return err;
1244        stream = viadev->reg_offset / 0x10;
1245        if (chip->dxs_controls[stream]) {
1246                chip->playback_volume[stream][0] =
1247                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1248                chip->playback_volume[stream][1] =
1249                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1250                chip->dxs_controls[stream]->vd[0].access &=
1251                        ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1252                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1253                               SNDRV_CTL_EVENT_MASK_INFO,
1254                               &chip->dxs_controls[stream]->id);
1255        }
1256        return 0;
1257}
1258
1259/*
1260 * open callback for playback on via823x multi-channel
1261 */
1262static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1263{
1264        struct via82xx *chip = snd_pcm_substream_chip(substream);
1265        struct viadev *viadev = &chip->devs[chip->multi_devno];
1266        int err;
1267        /* channels constraint for VIA8233A
1268         * 3 and 5 channels are not supported
1269         */
1270        static const unsigned int channels[] = {
1271                1, 2, 4, 6
1272        };
1273        static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1274                .count = ARRAY_SIZE(channels),
1275                .list = channels,
1276                .mask = 0,
1277        };
1278
1279        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1280                return err;
1281        substream->runtime->hw.channels_max = 6;
1282        if (chip->revision == VIA_REV_8233A)
1283                snd_pcm_hw_constraint_list(substream->runtime, 0,
1284                                           SNDRV_PCM_HW_PARAM_CHANNELS,
1285                                           &hw_constraints_channels);
1286        return 0;
1287}
1288
1289/*
1290 * open callback for capture on via686 and via823x
1291 */
1292static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1293{
1294        struct via82xx *chip = snd_pcm_substream_chip(substream);
1295        struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1296
1297        return snd_via82xx_pcm_open(chip, viadev, substream);
1298}
1299
1300/*
1301 * close callback
1302 */
1303static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1304{
1305        struct via82xx *chip = snd_pcm_substream_chip(substream);
1306        struct viadev *viadev = substream->runtime->private_data;
1307        struct via_rate_lock *ratep;
1308
1309        /* release the rate lock */
1310        ratep = &chip->rates[viadev->direction];
1311        spin_lock_irq(&ratep->lock);
1312        ratep->used--;
1313        if (! ratep->used)
1314                ratep->rate = 0;
1315        spin_unlock_irq(&ratep->lock);
1316        if (! ratep->rate) {
1317                if (! viadev->direction) {
1318                        snd_ac97_update_power(chip->ac97,
1319                                              AC97_PCM_FRONT_DAC_RATE, 0);
1320                        snd_ac97_update_power(chip->ac97,
1321                                              AC97_PCM_SURR_DAC_RATE, 0);
1322                        snd_ac97_update_power(chip->ac97,
1323                                              AC97_PCM_LFE_DAC_RATE, 0);
1324                } else
1325                        snd_ac97_update_power(chip->ac97,
1326                                              AC97_PCM_LR_ADC_RATE, 0);
1327        }
1328        viadev->substream = NULL;
1329        return 0;
1330}
1331
1332static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1333{
1334        struct via82xx *chip = snd_pcm_substream_chip(substream);
1335        struct viadev *viadev = substream->runtime->private_data;
1336        unsigned int stream;
1337
1338        stream = viadev->reg_offset / 0x10;
1339        if (chip->dxs_controls[stream]) {
1340                chip->dxs_controls[stream]->vd[0].access |=
1341                        SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1342                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1343                               &chip->dxs_controls[stream]->id);
1344        }
1345        return snd_via82xx_pcm_close(substream);
1346}
1347
1348
1349/* via686 playback callbacks */
1350static const struct snd_pcm_ops snd_via686_playback_ops = {
1351        .open =         snd_via686_playback_open,
1352        .close =        snd_via82xx_pcm_close,
1353        .hw_params =    snd_via82xx_hw_params,
1354        .hw_free =      snd_via82xx_hw_free,
1355        .prepare =      snd_via686_playback_prepare,
1356        .trigger =      snd_via82xx_pcm_trigger,
1357        .pointer =      snd_via686_pcm_pointer,
1358};
1359
1360/* via686 capture callbacks */
1361static const struct snd_pcm_ops snd_via686_capture_ops = {
1362        .open =         snd_via82xx_capture_open,
1363        .close =        snd_via82xx_pcm_close,
1364        .hw_params =    snd_via82xx_hw_params,
1365        .hw_free =      snd_via82xx_hw_free,
1366        .prepare =      snd_via686_capture_prepare,
1367        .trigger =      snd_via82xx_pcm_trigger,
1368        .pointer =      snd_via686_pcm_pointer,
1369};
1370
1371/* via823x DSX playback callbacks */
1372static const struct snd_pcm_ops snd_via8233_playback_ops = {
1373        .open =         snd_via8233_playback_open,
1374        .close =        snd_via8233_playback_close,
1375        .hw_params =    snd_via82xx_hw_params,
1376        .hw_free =      snd_via82xx_hw_free,
1377        .prepare =      snd_via8233_playback_prepare,
1378        .trigger =      snd_via82xx_pcm_trigger,
1379        .pointer =      snd_via8233_pcm_pointer,
1380};
1381
1382/* via823x multi-channel playback callbacks */
1383static const struct snd_pcm_ops snd_via8233_multi_ops = {
1384        .open =         snd_via8233_multi_open,
1385        .close =        snd_via82xx_pcm_close,
1386        .hw_params =    snd_via82xx_hw_params,
1387        .hw_free =      snd_via82xx_hw_free,
1388        .prepare =      snd_via8233_multi_prepare,
1389        .trigger =      snd_via82xx_pcm_trigger,
1390        .pointer =      snd_via8233_pcm_pointer,
1391};
1392
1393/* via823x capture callbacks */
1394static const struct snd_pcm_ops snd_via8233_capture_ops = {
1395        .open =         snd_via82xx_capture_open,
1396        .close =        snd_via82xx_pcm_close,
1397        .hw_params =    snd_via82xx_hw_params,
1398        .hw_free =      snd_via82xx_hw_free,
1399        .prepare =      snd_via8233_capture_prepare,
1400        .trigger =      snd_via82xx_pcm_trigger,
1401        .pointer =      snd_via8233_pcm_pointer,
1402};
1403
1404
1405static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1406                        int shadow_pos, int direction)
1407{
1408        chip->devs[idx].reg_offset = reg_offset;
1409        chip->devs[idx].shadow_shift = shadow_pos * 4;
1410        chip->devs[idx].direction = direction;
1411        chip->devs[idx].port = chip->port + reg_offset;
1412}
1413
1414/*
1415 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1416 */
1417static int snd_via8233_pcm_new(struct via82xx *chip)
1418{
1419        struct snd_pcm *pcm;
1420        struct snd_pcm_chmap *chmap;
1421        int i, err;
1422
1423        chip->playback_devno = 0;       /* x 4 */
1424        chip->multi_devno = 4;          /* x 1 */
1425        chip->capture_devno = 5;        /* x 2 */
1426        chip->num_devs = 7;
1427        chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1428
1429        /* PCM #0:  4 DSX playbacks and 1 capture */
1430        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1431        if (err < 0)
1432                return err;
1433        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1434        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1435        pcm->private_data = chip;
1436        strcpy(pcm->name, chip->card->shortname);
1437        chip->pcms[0] = pcm;
1438        /* set up playbacks */
1439        for (i = 0; i < 4; i++)
1440                init_viadev(chip, i, 0x10 * i, i, 0);
1441        /* capture */
1442        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1443
1444        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1445                                       &chip->pci->dev,
1446                                       64*1024, VIA_MAX_BUFSIZE);
1447
1448        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1449                                     snd_pcm_std_chmaps, 2, 0,
1450                                     &chmap);
1451        if (err < 0)
1452                return err;
1453
1454        /* PCM #1:  multi-channel playback and 2nd capture */
1455        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1456        if (err < 0)
1457                return err;
1458        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1459        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1460        pcm->private_data = chip;
1461        strcpy(pcm->name, chip->card->shortname);
1462        chip->pcms[1] = pcm;
1463        /* set up playback */
1464        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1465        /* set up capture */
1466        init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1467
1468        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1469                                       &chip->pci->dev,
1470                                       64*1024, VIA_MAX_BUFSIZE);
1471
1472        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1473                                     snd_pcm_alt_chmaps, 6, 0,
1474                                     &chmap);
1475        if (err < 0)
1476                return err;
1477        chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1478
1479        return 0;
1480}
1481
1482/*
1483 * create pcm instances for VIA8233A
1484 */
1485static int snd_via8233a_pcm_new(struct via82xx *chip)
1486{
1487        struct snd_pcm *pcm;
1488        struct snd_pcm_chmap *chmap;
1489        int err;
1490
1491        chip->multi_devno = 0;
1492        chip->playback_devno = 1;
1493        chip->capture_devno = 2;
1494        chip->num_devs = 3;
1495        chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1496
1497        /* PCM #0:  multi-channel playback and capture */
1498        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1499        if (err < 0)
1500                return err;
1501        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1502        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1503        pcm->private_data = chip;
1504        strcpy(pcm->name, chip->card->shortname);
1505        chip->pcms[0] = pcm;
1506        /* set up playback */
1507        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1508        /* capture */
1509        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1510
1511        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1512                                       &chip->pci->dev,
1513                                       64*1024, VIA_MAX_BUFSIZE);
1514
1515        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1516                                     snd_pcm_alt_chmaps, 6, 0,
1517                                     &chmap);
1518        if (err < 0)
1519                return err;
1520        chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1521
1522        /* SPDIF supported? */
1523        if (! ac97_can_spdif(chip->ac97))
1524                return 0;
1525
1526        /* PCM #1:  DXS3 playback (for spdif) */
1527        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1528        if (err < 0)
1529                return err;
1530        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1531        pcm->private_data = chip;
1532        strcpy(pcm->name, chip->card->shortname);
1533        chip->pcms[1] = pcm;
1534        /* set up playback */
1535        init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1536
1537        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1538                                       &chip->pci->dev,
1539                                       64*1024, VIA_MAX_BUFSIZE);
1540        return 0;
1541}
1542
1543/*
1544 * create a pcm instance for via686a/b
1545 */
1546static int snd_via686_pcm_new(struct via82xx *chip)
1547{
1548        struct snd_pcm *pcm;
1549        int err;
1550
1551        chip->playback_devno = 0;
1552        chip->capture_devno = 1;
1553        chip->num_devs = 2;
1554        chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1555
1556        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1557        if (err < 0)
1558                return err;
1559        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1560        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1561        pcm->private_data = chip;
1562        strcpy(pcm->name, chip->card->shortname);
1563        chip->pcms[0] = pcm;
1564        init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1565        init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1566
1567        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1568                                       &chip->pci->dev,
1569                                       64*1024, VIA_MAX_BUFSIZE);
1570        return 0;
1571}
1572
1573
1574/*
1575 *  Mixer part
1576 */
1577
1578static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1579                                           struct snd_ctl_elem_info *uinfo)
1580{
1581        /* formerly they were "Line" and "Mic", but it looks like that they
1582         * have nothing to do with the actual physical connections...
1583         */
1584        static const char * const texts[2] = {
1585                "Input1", "Input2"
1586        };
1587        return snd_ctl_enum_info(uinfo, 1, 2, texts);
1588}
1589
1590static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1591                                          struct snd_ctl_elem_value *ucontrol)
1592{
1593        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1594        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1595        ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1596        return 0;
1597}
1598
1599static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1600                                          struct snd_ctl_elem_value *ucontrol)
1601{
1602        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1603        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1604        u8 val, oval;
1605
1606        spin_lock_irq(&chip->reg_lock);
1607        oval = inb(port);
1608        val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1609        if (ucontrol->value.enumerated.item[0])
1610                val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1611        if (val != oval)
1612                outb(val, port);
1613        spin_unlock_irq(&chip->reg_lock);
1614        return val != oval;
1615}
1616
1617static struct snd_kcontrol_new snd_via8233_capture_source = {
1618        .name = "Input Source Select",
1619        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1620        .info = snd_via8233_capture_source_info,
1621        .get = snd_via8233_capture_source_get,
1622        .put = snd_via8233_capture_source_put,
1623};
1624
1625#define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1626
1627static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1628                                      struct snd_ctl_elem_value *ucontrol)
1629{
1630        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1631        u8 val;
1632
1633        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1634        ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1635        return 0;
1636}
1637
1638static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1639                                      struct snd_ctl_elem_value *ucontrol)
1640{
1641        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1642        u8 val, oval;
1643
1644        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1645        val = oval & ~VIA8233_SPDIF_DX3;
1646        if (ucontrol->value.integer.value[0])
1647                val |= VIA8233_SPDIF_DX3;
1648        /* save the spdif flag for rate filtering */
1649        chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1650        if (val != oval) {
1651                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1652                return 1;
1653        }
1654        return 0;
1655}
1656
1657static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = {
1658        .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1659        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1660        .info = snd_via8233_dxs3_spdif_info,
1661        .get = snd_via8233_dxs3_spdif_get,
1662        .put = snd_via8233_dxs3_spdif_put,
1663};
1664
1665static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1666                                       struct snd_ctl_elem_info *uinfo)
1667{
1668        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1669        uinfo->count = 2;
1670        uinfo->value.integer.min = 0;
1671        uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1672        return 0;
1673}
1674
1675static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1676                                      struct snd_ctl_elem_value *ucontrol)
1677{
1678        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1679        unsigned int idx = kcontrol->id.subdevice;
1680
1681        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1682        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1683        return 0;
1684}
1685
1686static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1687                                         struct snd_ctl_elem_value *ucontrol)
1688{
1689        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1690        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1691        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1692        return 0;
1693}
1694
1695static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1696                                      struct snd_ctl_elem_value *ucontrol)
1697{
1698        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1699        unsigned int idx = kcontrol->id.subdevice;
1700        unsigned long port = chip->port + 0x10 * idx;
1701        unsigned char val;
1702        int i, change = 0;
1703
1704        for (i = 0; i < 2; i++) {
1705                val = ucontrol->value.integer.value[i];
1706                if (val > VIA_DXS_MAX_VOLUME)
1707                        val = VIA_DXS_MAX_VOLUME;
1708                val = VIA_DXS_MAX_VOLUME - val;
1709                change |= val != chip->playback_volume[idx][i];
1710                if (change) {
1711                        chip->playback_volume[idx][i] = val;
1712                        outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1713                }
1714        }
1715        return change;
1716}
1717
1718static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1719                                         struct snd_ctl_elem_value *ucontrol)
1720{
1721        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1722        unsigned int idx;
1723        unsigned char val;
1724        int i, change = 0;
1725
1726        for (i = 0; i < 2; i++) {
1727                val = ucontrol->value.integer.value[i];
1728                if (val > VIA_DXS_MAX_VOLUME)
1729                        val = VIA_DXS_MAX_VOLUME;
1730                val = VIA_DXS_MAX_VOLUME - val;
1731                if (val != chip->playback_volume_c[i]) {
1732                        change = 1;
1733                        chip->playback_volume_c[i] = val;
1734                        for (idx = 0; idx < 4; idx++) {
1735                                unsigned long port = chip->port + 0x10 * idx;
1736                                chip->playback_volume[idx][i] = val;
1737                                outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1738                        }
1739                }
1740        }
1741        return change;
1742}
1743
1744static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1745
1746static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = {
1747        .name = "PCM Playback Volume",
1748        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1749        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1750                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1751        .info = snd_via8233_dxs_volume_info,
1752        .get = snd_via8233_pcmdxs_volume_get,
1753        .put = snd_via8233_pcmdxs_volume_put,
1754        .tlv = { .p = db_scale_dxs }
1755};
1756
1757static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = {
1758        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1759        .device = 0,
1760        /* .subdevice set later */
1761        .name = "PCM Playback Volume",
1762        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1763                  SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1764                  SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1765        .info = snd_via8233_dxs_volume_info,
1766        .get = snd_via8233_dxs_volume_get,
1767        .put = snd_via8233_dxs_volume_put,
1768        .tlv = { .p = db_scale_dxs }
1769};
1770
1771/*
1772 */
1773
1774static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1775{
1776        struct via82xx *chip = bus->private_data;
1777        chip->ac97_bus = NULL;
1778}
1779
1780static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1781{
1782        struct via82xx *chip = ac97->private_data;
1783        chip->ac97 = NULL;
1784}
1785
1786static const struct ac97_quirk ac97_quirks[] = {
1787        {
1788                .subvendor = 0x1106,
1789                .subdevice = 0x4161,
1790                .codec_id = 0x56494161, /* VT1612A */
1791                .name = "Soltek SL-75DRV5",
1792                .type = AC97_TUNE_NONE
1793        },
1794        {       /* FIXME: which codec? */
1795                .subvendor = 0x1106,
1796                .subdevice = 0x4161,
1797                .name = "ASRock K7VT2",
1798                .type = AC97_TUNE_HP_ONLY
1799        },
1800        {
1801                .subvendor = 0x110a,
1802                .subdevice = 0x0079,
1803                .name = "Fujitsu Siemens D1289",
1804                .type = AC97_TUNE_HP_ONLY
1805        },
1806        {
1807                .subvendor = 0x1019,
1808                .subdevice = 0x0a81,
1809                .name = "ECS K7VTA3",
1810                .type = AC97_TUNE_HP_ONLY
1811        },
1812        {
1813                .subvendor = 0x1019,
1814                .subdevice = 0x0a85,
1815                .name = "ECS L7VMM2",
1816                .type = AC97_TUNE_HP_ONLY
1817        },
1818        {
1819                .subvendor = 0x1019,
1820                .subdevice = 0x1841,
1821                .name = "ECS K7VTA3",
1822                .type = AC97_TUNE_HP_ONLY
1823        },
1824        {
1825                .subvendor = 0x1849,
1826                .subdevice = 0x3059,
1827                .name = "ASRock K7VM2",
1828                .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1829        },
1830        {
1831                .subvendor = 0x14cd,
1832                .subdevice = 0x7002,
1833                .name = "Unknown",
1834                .type = AC97_TUNE_ALC_JACK
1835        },
1836        {
1837                .subvendor = 0x1071,
1838                .subdevice = 0x8590,
1839                .name = "Mitac Mobo",
1840                .type = AC97_TUNE_ALC_JACK
1841        },
1842        {
1843                .subvendor = 0x161f,
1844                .subdevice = 0x202b,
1845                .name = "Arima Notebook",
1846                .type = AC97_TUNE_HP_ONLY,
1847        },
1848        {
1849                .subvendor = 0x161f,
1850                .subdevice = 0x2032,
1851                .name = "Targa Traveller 811",
1852                .type = AC97_TUNE_HP_ONLY,
1853        },
1854        {
1855                .subvendor = 0x161f,
1856                .subdevice = 0x2032,
1857                .name = "m680x",
1858                .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1859        },
1860        {
1861                .subvendor = 0x1297,
1862                .subdevice = 0xa232,
1863                .name = "Shuttle AK32VN",
1864                .type = AC97_TUNE_HP_ONLY
1865        },
1866        { } /* terminator */
1867};
1868
1869static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1870{
1871        struct snd_ac97_template ac97;
1872        int err;
1873        static const struct snd_ac97_bus_ops ops = {
1874                .write = snd_via82xx_codec_write,
1875                .read = snd_via82xx_codec_read,
1876                .wait = snd_via82xx_codec_wait,
1877        };
1878
1879        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1880                return err;
1881        chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1882        chip->ac97_bus->clock = chip->ac97_clock;
1883
1884        memset(&ac97, 0, sizeof(ac97));
1885        ac97.private_data = chip;
1886        ac97.private_free = snd_via82xx_mixer_free_ac97;
1887        ac97.pci = chip->pci;
1888        ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1889        if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1890                return err;
1891
1892        snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1893
1894        if (chip->chip_type != TYPE_VIA686) {
1895                /* use slot 10/11 */
1896                snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1897        }
1898
1899        return 0;
1900}
1901
1902#ifdef SUPPORT_JOYSTICK
1903#define JOYSTICK_ADDR   0x200
1904static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1905{
1906        struct gameport *gp;
1907        struct resource *r;
1908
1909        if (!joystick)
1910                return -ENODEV;
1911
1912        r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1913        if (!r) {
1914                dev_warn(chip->card->dev, "cannot reserve joystick port %#x\n",
1915                       JOYSTICK_ADDR);
1916                return -EBUSY;
1917        }
1918
1919        chip->gameport = gp = gameport_allocate_port();
1920        if (!gp) {
1921                dev_err(chip->card->dev,
1922                        "cannot allocate memory for gameport\n");
1923                release_and_free_resource(r);
1924                return -ENOMEM;
1925        }
1926
1927        gameport_set_name(gp, "VIA686 Gameport");
1928        gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1929        gameport_set_dev_parent(gp, &chip->pci->dev);
1930        gp->io = JOYSTICK_ADDR;
1931        gameport_set_port_data(gp, r);
1932
1933        /* Enable legacy joystick port */
1934        *legacy |= VIA_FUNC_ENABLE_GAME;
1935        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1936
1937        gameport_register_port(chip->gameport);
1938
1939        return 0;
1940}
1941
1942static void snd_via686_free_gameport(struct via82xx *chip)
1943{
1944        if (chip->gameport) {
1945                struct resource *r = gameport_get_port_data(chip->gameport);
1946
1947                gameport_unregister_port(chip->gameport);
1948                chip->gameport = NULL;
1949                release_and_free_resource(r);
1950        }
1951}
1952#else
1953static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1954{
1955        return -ENOSYS;
1956}
1957static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1958#endif
1959
1960
1961/*
1962 *
1963 */
1964
1965static int snd_via8233_init_misc(struct via82xx *chip)
1966{
1967        int i, err, caps;
1968        unsigned char val;
1969
1970        caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1971        for (i = 0; i < caps; i++) {
1972                snd_via8233_capture_source.index = i;
1973                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1974                if (err < 0)
1975                        return err;
1976        }
1977        if (ac97_can_spdif(chip->ac97)) {
1978                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1979                if (err < 0)
1980                        return err;
1981        }
1982        if (chip->chip_type != TYPE_VIA8233A) {
1983                /* when no h/w PCM volume control is found, use DXS volume control
1984                 * as the PCM vol control
1985                 */
1986                struct snd_ctl_elem_id sid;
1987                memset(&sid, 0, sizeof(sid));
1988                strcpy(sid.name, "PCM Playback Volume");
1989                sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1990                if (! snd_ctl_find_id(chip->card, &sid)) {
1991                        dev_info(chip->card->dev,
1992                                 "Using DXS as PCM Playback\n");
1993                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1994                        if (err < 0)
1995                                return err;
1996                }
1997                else /* Using DXS when PCM emulation is enabled is really weird */
1998                {
1999                        for (i = 0; i < 4; ++i) {
2000                                struct snd_kcontrol *kctl;
2001
2002                                kctl = snd_ctl_new1(
2003                                        &snd_via8233_dxs_volume_control, chip);
2004                                if (!kctl)
2005                                        return -ENOMEM;
2006                                kctl->id.subdevice = i;
2007                                err = snd_ctl_add(chip->card, kctl);
2008                                if (err < 0)
2009                                        return err;
2010                                chip->dxs_controls[i] = kctl;
2011                        }
2012                }
2013        }
2014        /* select spdif data slot 10/11 */
2015        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2016        val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2017        val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2018        pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2019
2020        return 0;
2021}
2022
2023static int snd_via686_init_misc(struct via82xx *chip)
2024{
2025        unsigned char legacy, legacy_cfg;
2026        int rev_h = 0;
2027
2028        legacy = chip->old_legacy;
2029        legacy_cfg = chip->old_legacy_cfg;
2030        legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2031        legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2032        if (chip->revision >= VIA_REV_686_H) {
2033                rev_h = 1;
2034                if (mpu_port >= 0x200) {        /* force MIDI */
2035                        mpu_port &= 0xfffc;
2036                        pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2037#ifdef CONFIG_PM_SLEEP
2038                        chip->mpu_port_saved = mpu_port;
2039#endif
2040                } else {
2041                        mpu_port = pci_resource_start(chip->pci, 2);
2042                }
2043        } else {
2044                switch (mpu_port) {     /* force MIDI */
2045                case 0x300:
2046                case 0x310:
2047                case 0x320:
2048                case 0x330:
2049                        legacy_cfg &= ~(3 << 2);
2050                        legacy_cfg |= (mpu_port & 0x0030) >> 2;
2051                        break;
2052                default:                        /* no, use BIOS settings */
2053                        if (legacy & VIA_FUNC_ENABLE_MIDI)
2054                                mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2055                        break;
2056                }
2057        }
2058        if (mpu_port >= 0x200 &&
2059            (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2060            != NULL) {
2061                if (rev_h)
2062                        legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2063                legacy |= VIA_FUNC_ENABLE_MIDI;
2064        } else {
2065                if (rev_h)
2066                        legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2067                legacy &= ~VIA_FUNC_ENABLE_MIDI;
2068                mpu_port = 0;
2069        }
2070
2071        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2072        pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2073        if (chip->mpu_res) {
2074                if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2075                                        mpu_port, MPU401_INFO_INTEGRATED |
2076                                        MPU401_INFO_IRQ_HOOK, -1,
2077                                        &chip->rmidi) < 0) {
2078                        dev_warn(chip->card->dev,
2079                                 "unable to initialize MPU-401 at 0x%lx, skipping\n",
2080                                 mpu_port);
2081                        legacy &= ~VIA_FUNC_ENABLE_MIDI;
2082                } else {
2083                        legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2084                }
2085                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2086        }
2087
2088        snd_via686_create_gameport(chip, &legacy);
2089
2090#ifdef CONFIG_PM_SLEEP
2091        chip->legacy_saved = legacy;
2092        chip->legacy_cfg_saved = legacy_cfg;
2093#endif
2094
2095        return 0;
2096}
2097
2098
2099/*
2100 * proc interface
2101 */
2102static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2103                                  struct snd_info_buffer *buffer)
2104{
2105        struct via82xx *chip = entry->private_data;
2106        int i;
2107        
2108        snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2109        for (i = 0; i < 0xa0; i += 4) {
2110                snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2111        }
2112}
2113
2114static void snd_via82xx_proc_init(struct via82xx *chip)
2115{
2116        snd_card_ro_proc_new(chip->card, "via82xx", chip,
2117                             snd_via82xx_proc_read);
2118}
2119
2120/*
2121 *
2122 */
2123
2124static int snd_via82xx_chip_init(struct via82xx *chip)
2125{
2126        unsigned int val;
2127        unsigned long end_time;
2128        unsigned char pval;
2129
2130#if 0 /* broken on K7M? */
2131        if (chip->chip_type == TYPE_VIA686)
2132                /* disable all legacy ports */
2133                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2134#endif
2135        pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2136        if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2137                /* deassert ACLink reset, force SYNC */
2138                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2139                                      VIA_ACLINK_CTRL_ENABLE |
2140                                      VIA_ACLINK_CTRL_RESET |
2141                                      VIA_ACLINK_CTRL_SYNC);
2142                udelay(100);
2143#if 1 /* FIXME: should we do full reset here for all chip models? */
2144                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2145                udelay(100);
2146#else
2147                /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2148                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2149                                      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2150                udelay(2);
2151#endif
2152                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2153                /* note - FM data out has trouble with non VRA codecs !! */
2154                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2155                udelay(100);
2156        }
2157        
2158        /* Make sure VRA is enabled, in case we didn't do a
2159         * complete codec reset, above */
2160        pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2161        if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2162                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2163                /* note - FM data out has trouble with non VRA codecs !! */
2164                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2165                udelay(100);
2166        }
2167
2168        /* wait until codec ready */
2169        end_time = jiffies + msecs_to_jiffies(750);
2170        do {
2171                pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2172                if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2173                        break;
2174                schedule_timeout_uninterruptible(1);
2175        } while (time_before(jiffies, end_time));
2176
2177        if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2178                dev_err(chip->card->dev,
2179                        "AC'97 codec is not ready [0x%x]\n", val);
2180
2181#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2182        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2183                                 VIA_REG_AC97_SECONDARY_VALID |
2184                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2185        end_time = jiffies + msecs_to_jiffies(750);
2186        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2187                                 VIA_REG_AC97_SECONDARY_VALID |
2188                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2189        do {
2190                if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2191                        chip->ac97_secondary = 1;
2192                        goto __ac97_ok2;
2193                }
2194                schedule_timeout_uninterruptible(1);
2195        } while (time_before(jiffies, end_time));
2196        /* This is ok, the most of motherboards have only one codec */
2197
2198      __ac97_ok2:
2199#endif
2200
2201        if (chip->chip_type == TYPE_VIA686) {
2202                /* route FM trap to IRQ, disable FM trap */
2203                pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2204                /* disable all GPI interrupts */
2205                outl(0, VIAREG(chip, GPI_INTR));
2206        }
2207
2208        if (chip->chip_type != TYPE_VIA686) {
2209                /* Workaround for Award BIOS bug:
2210                 * DXS channels don't work properly with VRA if MC97 is disabled.
2211                 */
2212                struct pci_dev *pci;
2213                pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2214                if (pci) {
2215                        unsigned char data;
2216                        pci_read_config_byte(pci, 0x44, &data);
2217                        pci_write_config_byte(pci, 0x44, data | 0x40);
2218                        pci_dev_put(pci);
2219                }
2220        }
2221
2222        if (chip->chip_type != TYPE_VIA8233A) {
2223                int i, idx;
2224                for (idx = 0; idx < 4; idx++) {
2225                        unsigned long port = chip->port + 0x10 * idx;
2226                        for (i = 0; i < 2; i++) {
2227                                chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2228                                outb(chip->playback_volume_c[i],
2229                                     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2230                        }
2231                }
2232        }
2233
2234        return 0;
2235}
2236
2237#ifdef CONFIG_PM_SLEEP
2238/*
2239 * power management
2240 */
2241static int snd_via82xx_suspend(struct device *dev)
2242{
2243        struct snd_card *card = dev_get_drvdata(dev);
2244        struct via82xx *chip = card->private_data;
2245        int i;
2246
2247        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2248        for (i = 0; i < chip->num_devs; i++)
2249                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2250        snd_ac97_suspend(chip->ac97);
2251
2252        /* save misc values */
2253        if (chip->chip_type != TYPE_VIA686) {
2254                pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2255                chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2256                chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2257        }
2258
2259        return 0;
2260}
2261
2262static int snd_via82xx_resume(struct device *dev)
2263{
2264        struct snd_card *card = dev_get_drvdata(dev);
2265        struct via82xx *chip = card->private_data;
2266        int i;
2267
2268        snd_via82xx_chip_init(chip);
2269
2270        if (chip->chip_type == TYPE_VIA686) {
2271                if (chip->mpu_port_saved)
2272                        pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2273                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2274                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2275        } else {
2276                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2277                outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2278                outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2279        }
2280
2281        snd_ac97_resume(chip->ac97);
2282
2283        for (i = 0; i < chip->num_devs; i++)
2284                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2285
2286        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2287        return 0;
2288}
2289
2290static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2291#define SND_VIA82XX_PM_OPS      &snd_via82xx_pm
2292#else
2293#define SND_VIA82XX_PM_OPS      NULL
2294#endif /* CONFIG_PM_SLEEP */
2295
2296static int snd_via82xx_free(struct via82xx *chip)
2297{
2298        unsigned int i;
2299
2300        if (chip->irq < 0)
2301                goto __end_hw;
2302        /* disable interrupts */
2303        for (i = 0; i < chip->num_devs; i++)
2304                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2305
2306        if (chip->irq >= 0)
2307                free_irq(chip->irq, chip);
2308 __end_hw:
2309        release_and_free_resource(chip->mpu_res);
2310        pci_release_regions(chip->pci);
2311
2312        if (chip->chip_type == TYPE_VIA686) {
2313                snd_via686_free_gameport(chip);
2314                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2315                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2316        }
2317        pci_disable_device(chip->pci);
2318        kfree(chip);
2319        return 0;
2320}
2321
2322static int snd_via82xx_dev_free(struct snd_device *device)
2323{
2324        struct via82xx *chip = device->device_data;
2325        return snd_via82xx_free(chip);
2326}
2327
2328static int snd_via82xx_create(struct snd_card *card,
2329                              struct pci_dev *pci,
2330                              int chip_type,
2331                              int revision,
2332                              unsigned int ac97_clock,
2333                              struct via82xx **r_via)
2334{
2335        struct via82xx *chip;
2336        int err;
2337        static const struct snd_device_ops ops = {
2338                .dev_free =     snd_via82xx_dev_free,
2339        };
2340
2341        if ((err = pci_enable_device(pci)) < 0)
2342                return err;
2343
2344        if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2345                pci_disable_device(pci);
2346                return -ENOMEM;
2347        }
2348
2349        chip->chip_type = chip_type;
2350        chip->revision = revision;
2351
2352        spin_lock_init(&chip->reg_lock);
2353        spin_lock_init(&chip->rates[0].lock);
2354        spin_lock_init(&chip->rates[1].lock);
2355        chip->card = card;
2356        chip->pci = pci;
2357        chip->irq = -1;
2358
2359        pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2360        pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2361        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2362                              chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2363
2364        if ((err = pci_request_regions(pci, card->driver)) < 0) {
2365                kfree(chip);
2366                pci_disable_device(pci);
2367                return err;
2368        }
2369        chip->port = pci_resource_start(pci, 0);
2370        if (request_irq(pci->irq,
2371                        chip_type == TYPE_VIA8233 ?
2372                        snd_via8233_interrupt : snd_via686_interrupt,
2373                        IRQF_SHARED,
2374                        KBUILD_MODNAME, chip)) {
2375                dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2376                snd_via82xx_free(chip);
2377                return -EBUSY;
2378        }
2379        chip->irq = pci->irq;
2380        card->sync_irq = chip->irq;
2381        if (ac97_clock >= 8000 && ac97_clock <= 48000)
2382                chip->ac97_clock = ac97_clock;
2383
2384        if ((err = snd_via82xx_chip_init(chip)) < 0) {
2385                snd_via82xx_free(chip);
2386                return err;
2387        }
2388
2389        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2390                snd_via82xx_free(chip);
2391                return err;
2392        }
2393
2394        /* The 8233 ac97 controller does not implement the master bit
2395         * in the pci command register. IMHO this is a violation of the PCI spec.
2396         * We call pci_set_master here because it does not hurt. */
2397        pci_set_master(pci);
2398
2399        *r_via = chip;
2400        return 0;
2401}
2402
2403struct via823x_info {
2404        int revision;
2405        char *name;
2406        int type;
2407};
2408static const struct via823x_info via823x_cards[] = {
2409        { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2410        { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2411        { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2412        { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2413        { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2414        { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2415        { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2416};
2417
2418/*
2419 * auto detection of DXS channel supports.
2420 */
2421
2422static const struct snd_pci_quirk dxs_allowlist[] = {
2423        SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2424        SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2425        SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2426        SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2427        SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2428        SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2429        SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2430        SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2431        SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2432        SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2433        SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2434        SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2435        SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2436        SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2437        SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2438        SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2439        SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2440        SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2441        SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2442        SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2443        SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2444        SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2445        SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2446        SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2447        SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2448        SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2449        SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2450        SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2451        SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2452        SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2453        SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2454        SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2455        SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2456        SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2457        SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2458        SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2459        SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2460        SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2461        SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2462        SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2463        { } /* terminator */
2464};
2465
2466static int check_dxs_list(struct pci_dev *pci, int revision)
2467{
2468        const struct snd_pci_quirk *w;
2469
2470        w = snd_pci_quirk_lookup(pci, dxs_allowlist);
2471        if (w) {
2472                dev_dbg(&pci->dev, "DXS allow list for %s found\n",
2473                            snd_pci_quirk_name(w));
2474                return w->value;
2475        }
2476
2477        /* for newer revision, default to DXS_SRC */
2478        if (revision >= VIA_REV_8235)
2479                return VIA_DXS_SRC;
2480
2481        /*
2482         * not detected, try 48k rate only to be sure.
2483         */
2484        dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n");
2485        dev_info(&pci->dev, "         Please try dxs_support=5 option\n");
2486        dev_info(&pci->dev, "         and report if it works on your machine.\n");
2487        dev_info(&pci->dev, "         For more details, read ALSA-Configuration.txt.\n");
2488        return VIA_DXS_48K;
2489};
2490
2491static int snd_via82xx_probe(struct pci_dev *pci,
2492                             const struct pci_device_id *pci_id)
2493{
2494        struct snd_card *card;
2495        struct via82xx *chip;
2496        int chip_type = 0, card_type;
2497        unsigned int i;
2498        int err;
2499
2500        err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2501        if (err < 0)
2502                return err;
2503
2504        card_type = pci_id->driver_data;
2505        switch (card_type) {
2506        case TYPE_CARD_VIA686:
2507                strcpy(card->driver, "VIA686A");
2508                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2509                chip_type = TYPE_VIA686;
2510                break;
2511        case TYPE_CARD_VIA8233:
2512                chip_type = TYPE_VIA8233;
2513                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2514                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2515                        if (pci->revision == via823x_cards[i].revision) {
2516                                chip_type = via823x_cards[i].type;
2517                                strcpy(card->shortname, via823x_cards[i].name);
2518                                break;
2519                        }
2520                }
2521                if (chip_type != TYPE_VIA8233A) {
2522                        if (dxs_support == VIA_DXS_AUTO)
2523                                dxs_support = check_dxs_list(pci, pci->revision);
2524                        /* force to use VIA8233 or 8233A model according to
2525                         * dxs_support module option
2526                         */
2527                        if (dxs_support == VIA_DXS_DISABLE)
2528                                chip_type = TYPE_VIA8233A;
2529                        else
2530                                chip_type = TYPE_VIA8233;
2531                }
2532                if (chip_type == TYPE_VIA8233A)
2533                        strcpy(card->driver, "VIA8233A");
2534                else if (pci->revision >= VIA_REV_8237)
2535                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
2536                else
2537                        strcpy(card->driver, "VIA8233");
2538                break;
2539        default:
2540                dev_err(card->dev, "invalid card type %d\n", card_type);
2541                err = -EINVAL;
2542                goto __error;
2543        }
2544                
2545        if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2546                                      ac97_clock, &chip)) < 0)
2547                goto __error;
2548        card->private_data = chip;
2549        if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2550                goto __error;
2551
2552        if (chip_type == TYPE_VIA686) {
2553                if ((err = snd_via686_pcm_new(chip)) < 0 ||
2554                    (err = snd_via686_init_misc(chip)) < 0)
2555                        goto __error;
2556        } else {
2557                if (chip_type == TYPE_VIA8233A) {
2558                        if ((err = snd_via8233a_pcm_new(chip)) < 0)
2559                                goto __error;
2560                        // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2561                } else {
2562                        if ((err = snd_via8233_pcm_new(chip)) < 0)
2563                                goto __error;
2564                        if (dxs_support == VIA_DXS_48K)
2565                                chip->dxs_fixed = 1;
2566                        else if (dxs_support == VIA_DXS_NO_VRA)
2567                                chip->no_vra = 1;
2568                        else if (dxs_support == VIA_DXS_SRC) {
2569                                chip->no_vra = 1;
2570                                chip->dxs_src = 1;
2571                        }
2572                }
2573                if ((err = snd_via8233_init_misc(chip)) < 0)
2574                        goto __error;
2575        }
2576
2577        /* disable interrupts */
2578        for (i = 0; i < chip->num_devs; i++)
2579                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2580
2581        snprintf(card->longname, sizeof(card->longname),
2582                 "%s with %s at %#lx, irq %d", card->shortname,
2583                 snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2584
2585        snd_via82xx_proc_init(chip);
2586
2587        if ((err = snd_card_register(card)) < 0) {
2588                snd_card_free(card);
2589                return err;
2590        }
2591        pci_set_drvdata(pci, card);
2592        return 0;
2593
2594 __error:
2595        snd_card_free(card);
2596        return err;
2597}
2598
2599static void snd_via82xx_remove(struct pci_dev *pci)
2600{
2601        snd_card_free(pci_get_drvdata(pci));
2602}
2603
2604static struct pci_driver via82xx_driver = {
2605        .name = KBUILD_MODNAME,
2606        .id_table = snd_via82xx_ids,
2607        .probe = snd_via82xx_probe,
2608        .remove = snd_via82xx_remove,
2609        .driver = {
2610                .pm = SND_VIA82XX_PM_OPS,
2611        },
2612};
2613
2614module_pci_driver(via82xx_driver);
2615