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");
  59
  60#if IS_REACHABLE(CONFIG_GAMEPORT)
  61#define SUPPORT_JOYSTICK 1
  62#endif
  63
  64static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  65static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  66static long mpu_port;
  67#ifdef SUPPORT_JOYSTICK
  68static bool joystick;
  69#endif
  70static int ac97_clock = 48000;
  71static char *ac97_quirk;
  72static int dxs_support;
  73static int dxs_init_volume = 31;
  74static int nodelay;
  75
  76module_param(index, int, 0444);
  77MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  78module_param(id, charp, 0444);
  79MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  80module_param_hw(mpu_port, long, ioport, 0444);
  81MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  82#ifdef SUPPORT_JOYSTICK
  83module_param(joystick, bool, 0444);
  84MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  85#endif
  86module_param(ac97_clock, int, 0444);
  87MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
  88module_param(ac97_quirk, charp, 0444);
  89MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
  90module_param(dxs_support, int, 0444);
  91MODULE_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)");
  92module_param(dxs_init_volume, int, 0644);
  93MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
  94module_param(nodelay, int, 0444);
  95MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
  96
  97/* just for backward compatibility */
  98static bool enable;
  99module_param(enable, bool, 0444);
 100
 101
 102/* revision numbers for via686 */
 103#define VIA_REV_686_A           0x10
 104#define VIA_REV_686_B           0x11
 105#define VIA_REV_686_C           0x12
 106#define VIA_REV_686_D           0x13
 107#define VIA_REV_686_E           0x14
 108#define VIA_REV_686_H           0x20
 109
 110/* revision numbers for via8233 */
 111#define VIA_REV_PRE_8233        0x10    /* not in market */
 112#define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
 113#define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 114#define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
 115#define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
 116#define VIA_REV_8237            0x60
 117#define VIA_REV_8251            0x70
 118
 119/*
 120 *  Direct registers
 121 */
 122
 123#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
 124#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
 125
 126/* common offsets */
 127#define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
 128#define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
 129#define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
 130#define   VIA_REG_STAT_PAUSED           0x40    /* RO */
 131#define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
 132#define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
 133#define   VIA_REG_STAT_EOL              0x02    /* RWC */
 134#define   VIA_REG_STAT_FLAG             0x01    /* RWC */
 135#define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
 136#define   VIA_REG_CTRL_START            0x80    /* WO */
 137#define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
 138#define   VIA_REG_CTRL_AUTOSTART        0x20
 139#define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
 140#define   VIA_REG_CTRL_INT_STOP         0x04            
 141#define   VIA_REG_CTRL_INT_EOL          0x02
 142#define   VIA_REG_CTRL_INT_FLAG         0x01
 143#define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
 144#define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
 145#define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
 146#define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
 147#define   VIA_REG_TYPE_16BIT            0x20    /* RW */
 148#define   VIA_REG_TYPE_STEREO           0x10    /* RW */
 149#define   VIA_REG_TYPE_INT_LLINE        0x00
 150#define   VIA_REG_TYPE_INT_LSAMPLE      0x04
 151#define   VIA_REG_TYPE_INT_LESSONE      0x08
 152#define   VIA_REG_TYPE_INT_MASK         0x0c
 153#define   VIA_REG_TYPE_INT_EOL          0x02
 154#define   VIA_REG_TYPE_INT_FLAG         0x01
 155#define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
 156#define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
 157#define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
 158#define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
 159#define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
 160#define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
 161#define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
 162
 163#define DEFINE_VIA_REGSET(name,val) \
 164enum {\
 165        VIA_REG_##name##_STATUS         = (val),\
 166        VIA_REG_##name##_CONTROL        = (val) + 0x01,\
 167        VIA_REG_##name##_TYPE           = (val) + 0x02,\
 168        VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
 169        VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
 170        VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
 171        VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
 172}
 173
 174/* playback block */
 175DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 176DEFINE_VIA_REGSET(CAPTURE, 0x10);
 177DEFINE_VIA_REGSET(FM, 0x20);
 178
 179/* AC'97 */
 180#define VIA_REG_AC97                    0x80    /* dword */
 181#define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
 182#define   VIA_REG_AC97_CODEC_ID_SHIFT   30
 183#define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
 184#define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
 185#define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
 186#define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
 187#define   VIA_REG_AC97_BUSY             (1<<24)
 188#define   VIA_REG_AC97_READ             (1<<23)
 189#define   VIA_REG_AC97_CMD_SHIFT        16
 190#define   VIA_REG_AC97_CMD_MASK         0x7e
 191#define   VIA_REG_AC97_DATA_SHIFT       0
 192#define   VIA_REG_AC97_DATA_MASK        0xffff
 193
 194#define VIA_REG_SGD_SHADOW              0x84    /* dword */
 195/* via686 */
 196#define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
 197#define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
 198#define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
 199#define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
 200#define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
 201#define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
 202#define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
 203#define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
 204#define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
 205#define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
 206#define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
 207#define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
 208/* via8233 */
 209#define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
 210#define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
 211#define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
 212#define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
 213#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
 214#define   VIA8233_REG_SGD_CHAN_SDX      0
 215#define   VIA8233_REG_SGD_CHAN_MULTI    4
 216#define   VIA8233_REG_SGD_CHAN_REC      6
 217#define   VIA8233_REG_SGD_CHAN_REC1     7
 218
 219#define VIA_REG_GPI_STATUS              0x88
 220#define VIA_REG_GPI_INTR                0x8c
 221
 222/* multi-channel and capture registers for via8233 */
 223DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 224DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
 225
 226/* via8233-specific registers */
 227#define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
 228#define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
 229#define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
 230#define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
 231#define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
 232#define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
 233#define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
 234#define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
 235
 236#define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
 237
 238#define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
 239#define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
 240#define   VIA_REG_CAPTURE_CHANNEL_LINE  0
 241#define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
 242
 243#define VIA_TBL_BIT_FLAG        0x40000000
 244#define VIA_TBL_BIT_EOL         0x80000000
 245
 246/* pci space */
 247#define VIA_ACLINK_STAT         0x40
 248#define  VIA_ACLINK_C11_READY   0x20
 249#define  VIA_ACLINK_C10_READY   0x10
 250#define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
 251#define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
 252#define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
 253#define VIA_ACLINK_CTRL         0x41
 254#define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
 255#define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
 256#define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
 257#define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
 258#define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
 259#define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
 260#define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
 261#define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
 262#define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
 263                                 VIA_ACLINK_CTRL_RESET|\
 264                                 VIA_ACLINK_CTRL_PCM|\
 265                                 VIA_ACLINK_CTRL_VRA)
 266#define VIA_FUNC_ENABLE         0x42
 267#define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
 268#define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
 269#define  VIA_FUNC_RX2C_WRITE    0x20
 270#define  VIA_FUNC_SB_FIFO_EMPTY 0x10
 271#define  VIA_FUNC_ENABLE_GAME   0x08
 272#define  VIA_FUNC_ENABLE_FM     0x04
 273#define  VIA_FUNC_ENABLE_MIDI   0x02
 274#define  VIA_FUNC_ENABLE_SB     0x01
 275#define VIA_PNP_CONTROL         0x43
 276#define VIA_FM_NMI_CTRL         0x48
 277#define VIA8233_VOLCHG_CTRL     0x48
 278#define VIA8233_SPDIF_CTRL      0x49
 279#define  VIA8233_SPDIF_DX3      0x08
 280#define  VIA8233_SPDIF_SLOT_MASK        0x03
 281#define  VIA8233_SPDIF_SLOT_1011        0x00
 282#define  VIA8233_SPDIF_SLOT_34          0x01
 283#define  VIA8233_SPDIF_SLOT_78          0x02
 284#define  VIA8233_SPDIF_SLOT_69          0x03
 285
 286/*
 287 */
 288
 289#define VIA_DXS_AUTO    0
 290#define VIA_DXS_ENABLE  1
 291#define VIA_DXS_DISABLE 2
 292#define VIA_DXS_48K     3
 293#define VIA_DXS_NO_VRA  4
 294#define VIA_DXS_SRC     5
 295
 296
 297/*
 298 * pcm stream
 299 */
 300
 301struct snd_via_sg_table {
 302        unsigned int offset;
 303        unsigned int size;
 304} ;
 305
 306#define VIA_TABLE_SIZE  255
 307#define VIA_MAX_BUFSIZE (1<<24)
 308
 309struct viadev {
 310        unsigned int reg_offset;
 311        unsigned long port;
 312        int direction;  /* playback = 0, capture = 1 */
 313        struct snd_pcm_substream *substream;
 314        int running;
 315        unsigned int tbl_entries; /* # descriptors */
 316        struct snd_dma_buffer table;
 317        struct snd_via_sg_table *idx_table;
 318        /* for recovery from the unexpected pointer */
 319        unsigned int lastpos;
 320        unsigned int fragsize;
 321        unsigned int bufsize;
 322        unsigned int bufsize2;
 323        int hwptr_done;         /* processed frame position in the buffer */
 324        int in_interrupt;
 325        int shadow_shift;
 326};
 327
 328
 329enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 330enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 331
 332#define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 333
 334struct via_rate_lock {
 335        spinlock_t lock;
 336        int rate;
 337        int used;
 338};
 339
 340struct via82xx {
 341        int irq;
 342
 343        unsigned long port;
 344        struct resource *mpu_res;
 345        int chip_type;
 346        unsigned char revision;
 347
 348        unsigned char old_legacy;
 349        unsigned char old_legacy_cfg;
 350#ifdef CONFIG_PM_SLEEP
 351        unsigned char legacy_saved;
 352        unsigned char legacy_cfg_saved;
 353        unsigned char spdif_ctrl_saved;
 354        unsigned char capture_src_saved[2];
 355        unsigned int mpu_port_saved;
 356#endif
 357
 358        unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 359        unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 360
 361        unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 362
 363        struct pci_dev *pci;
 364        struct snd_card *card;
 365
 366        unsigned int num_devs;
 367        unsigned int playback_devno, multi_devno, capture_devno;
 368        struct viadev devs[VIA_MAX_DEVS];
 369        struct via_rate_lock rates[2]; /* playback and capture */
 370        unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 371        unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 372        unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 373        unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 374
 375        struct snd_pcm *pcms[2];
 376        struct snd_rawmidi *rmidi;
 377        struct snd_kcontrol *dxs_controls[4];
 378
 379        struct snd_ac97_bus *ac97_bus;
 380        struct snd_ac97 *ac97;
 381        unsigned int ac97_clock;
 382        unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 383
 384        spinlock_t reg_lock;
 385        struct snd_info_entry *proc_entry;
 386
 387#ifdef SUPPORT_JOYSTICK
 388        struct gameport *gameport;
 389#endif
 390};
 391
 392static const struct pci_device_id snd_via82xx_ids[] = {
 393        /* 0x1106, 0x3058 */
 394        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 395        /* 0x1106, 0x3059 */
 396        { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 397        { 0, }
 398};
 399
 400MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 401
 402/*
 403 */
 404
 405/*
 406 * allocate and initialize the descriptor buffers
 407 * periods = number of periods
 408 * fragsize = period size in bytes
 409 */
 410static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 411                           struct pci_dev *pci,
 412                           unsigned int periods, unsigned int fragsize)
 413{
 414        unsigned int i, idx, ofs, rest;
 415        struct via82xx *chip = snd_pcm_substream_chip(substream);
 416        __le32 *pgtbl;
 417
 418        if (dev->table.area == NULL) {
 419                /* the start of each lists must be aligned to 8 bytes,
 420                 * but the kernel pages are much bigger, so we don't care
 421                 */
 422                if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
 423                                        PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 424                                        &dev->table) < 0)
 425                        return -ENOMEM;
 426        }
 427        if (! dev->idx_table) {
 428                dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
 429                                               sizeof(*dev->idx_table),
 430                                               GFP_KERNEL);
 431                if (! dev->idx_table)
 432                        return -ENOMEM;
 433        }
 434
 435        /* fill the entries */
 436        idx = 0;
 437        ofs = 0;
 438        pgtbl = (__le32 *)dev->table.area;
 439        for (i = 0; i < periods; i++) {
 440                rest = fragsize;
 441                /* fill descriptors for a period.
 442                 * a period can be split to several descriptors if it's
 443                 * over page boundary.
 444                 */
 445                do {
 446                        unsigned int r;
 447                        unsigned int flag;
 448                        unsigned int addr;
 449
 450                        if (idx >= VIA_TABLE_SIZE) {
 451                                dev_err(&pci->dev, "too much table size!\n");
 452                                return -EINVAL;
 453                        }
 454                        addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 455                        pgtbl[idx << 1] = cpu_to_le32(addr);
 456                        r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 457                        rest -= r;
 458                        if (! rest) {
 459                                if (i == periods - 1)
 460                                        flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 461                                else
 462                                        flag = VIA_TBL_BIT_FLAG; /* period boundary */
 463                        } else
 464                                flag = 0; /* period continues to the next */
 465                        /*
 466                        dev_dbg(&pci->dev,
 467                                "tbl %d: at %d  size %d (rest %d)\n",
 468                                idx, ofs, r, rest);
 469                        */
 470                        pgtbl[(idx<<1) + 1] = cpu_to_le32(r | flag);
 471                        dev->idx_table[idx].offset = ofs;
 472                        dev->idx_table[idx].size = r;
 473                        ofs += r;
 474                        idx++;
 475                } while (rest > 0);
 476        }
 477        dev->tbl_entries = idx;
 478        dev->bufsize = periods * fragsize;
 479        dev->bufsize2 = dev->bufsize / 2;
 480        dev->fragsize = fragsize;
 481        return 0;
 482}
 483
 484
 485static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 486                           struct pci_dev *pci)
 487{
 488        if (dev->table.area) {
 489                snd_dma_free_pages(&dev->table);
 490                dev->table.area = NULL;
 491        }
 492        kfree(dev->idx_table);
 493        dev->idx_table = NULL;
 494        return 0;
 495}
 496
 497/*
 498 *  Basic I/O
 499 */
 500
 501static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 502{
 503        return inl(VIAREG(chip, AC97));
 504}
 505 
 506static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 507{
 508        outl(val, VIAREG(chip, AC97));
 509}
 510 
 511static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 512{
 513        unsigned int timeout = 1000;    /* 1ms */
 514        unsigned int val;
 515        
 516        while (timeout-- > 0) {
 517                udelay(1);
 518                val = snd_via82xx_codec_xread(chip);
 519                if (!(val & 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        rate_changed = via_lock_rate(&chip->rates[0], ac97_rate);
1028        if (rate_changed < 0)
1029                return rate_changed;
1030        if (rate_changed)
1031                snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1032                                  chip->no_vra ? 48000 : runtime->rate);
1033        if (chip->spdif_on && viadev->reg_offset == 0x30)
1034                snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1035
1036        if (runtime->rate == 48000)
1037                rbits = 0xfffff;
1038        else
1039                rbits = (0x100000 / 48000) * runtime->rate +
1040                        ((0x100000 % 48000) * runtime->rate) / 48000;
1041        snd_BUG_ON(rbits & ~0xfffff);
1042        snd_via82xx_channel_reset(chip, viadev);
1043        snd_via82xx_set_table_ptr(chip, viadev);
1044        outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1045             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1046        outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1047             VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1048        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1049             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1050             rbits | /* rate */
1051             0xff000000,    /* STOP index is never reached */
1052             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1053        udelay(20);
1054        snd_via82xx_codec_ready(chip, 0);
1055        return 0;
1056}
1057
1058/*
1059 * prepare callback for multi-channel playback on via823x
1060 */
1061static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1062{
1063        struct via82xx *chip = snd_pcm_substream_chip(substream);
1064        struct viadev *viadev = substream->runtime->private_data;
1065        struct snd_pcm_runtime *runtime = substream->runtime;
1066        unsigned int slots;
1067        int fmt;
1068
1069        if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1070                return -EINVAL;
1071        snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1072        snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1073        snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1074        snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1075        snd_via82xx_channel_reset(chip, viadev);
1076        snd_via82xx_set_table_ptr(chip, viadev);
1077
1078        fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1079                VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1080        fmt |= runtime->channels << 4;
1081        outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1082#if 0
1083        if (chip->revision == VIA_REV_8233A)
1084                slots = 0;
1085        else
1086#endif
1087        {
1088                /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1089                /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1090                switch (runtime->channels) {
1091                case 1: slots = (1<<0) | (1<<4); break;
1092                case 2: slots = (1<<0) | (2<<4); break;
1093                case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1094                case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1095                case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1096                case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1097                default: slots = 0; break;
1098                }
1099        }
1100        /* STOP index is never reached */
1101        outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1102        udelay(20);
1103        snd_via82xx_codec_ready(chip, 0);
1104        return 0;
1105}
1106
1107/*
1108 * prepare callback for capture on via823x
1109 */
1110static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1111{
1112        struct via82xx *chip = snd_pcm_substream_chip(substream);
1113        struct viadev *viadev = substream->runtime->private_data;
1114        struct snd_pcm_runtime *runtime = substream->runtime;
1115
1116        if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1117                return -EINVAL;
1118        snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1119        snd_via82xx_channel_reset(chip, viadev);
1120        snd_via82xx_set_table_ptr(chip, viadev);
1121        outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1122        outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1123             (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1124             0xff000000,    /* STOP index is never reached */
1125             VIADEV_REG(viadev, OFFSET_STOP_IDX));
1126        udelay(20);
1127        snd_via82xx_codec_ready(chip, 0);
1128        return 0;
1129}
1130
1131
1132/*
1133 * pcm hardware definition, identical for both playback and capture
1134 */
1135static const struct snd_pcm_hardware snd_via82xx_hw =
1136{
1137        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1138                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1139                                 SNDRV_PCM_INFO_MMAP_VALID |
1140                                 /* SNDRV_PCM_INFO_RESUME | */
1141                                 SNDRV_PCM_INFO_PAUSE),
1142        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1143        .rates =                SNDRV_PCM_RATE_48000,
1144        .rate_min =             48000,
1145        .rate_max =             48000,
1146        .channels_min =         1,
1147        .channels_max =         2,
1148        .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1149        .period_bytes_min =     32,
1150        .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1151        .periods_min =          2,
1152        .periods_max =          VIA_TABLE_SIZE / 2,
1153        .fifo_size =            0,
1154};
1155
1156
1157/*
1158 * open callback skeleton
1159 */
1160static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1161                                struct snd_pcm_substream *substream)
1162{
1163        struct snd_pcm_runtime *runtime = substream->runtime;
1164        int err;
1165        struct via_rate_lock *ratep;
1166        bool use_src = false;
1167
1168        runtime->hw = snd_via82xx_hw;
1169        
1170        /* set the hw rate condition */
1171        ratep = &chip->rates[viadev->direction];
1172        spin_lock_irq(&ratep->lock);
1173        ratep->used++;
1174        if (chip->spdif_on && viadev->reg_offset == 0x30) {
1175                /* DXS#3 and spdif is on */
1176                runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1177                snd_pcm_limit_hw_rates(runtime);
1178        } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1179                /* fixed DXS playback rate */
1180                runtime->hw.rates = SNDRV_PCM_RATE_48000;
1181                runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1182        } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1183                /* use full SRC capabilities of DXS */
1184                runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1185                                     SNDRV_PCM_RATE_8000_48000);
1186                runtime->hw.rate_min = 8000;
1187                runtime->hw.rate_max = 48000;
1188                use_src = true;
1189        } else if (! ratep->rate) {
1190                int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1191                runtime->hw.rates = chip->ac97->rates[idx];
1192                snd_pcm_limit_hw_rates(runtime);
1193        } else {
1194                /* a fixed rate */
1195                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1196                runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1197        }
1198        spin_unlock_irq(&ratep->lock);
1199
1200        /* we may remove following constaint when we modify table entries
1201           in interrupt */
1202        err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
1203        if (err < 0)
1204                return err;
1205
1206        if (use_src) {
1207                err = snd_pcm_hw_rule_noresample(runtime, 48000);
1208                if (err < 0)
1209                        return err;
1210        }
1211
1212        runtime->private_data = viadev;
1213        viadev->substream = substream;
1214
1215        return 0;
1216}
1217
1218
1219/*
1220 * open callback for playback on via686
1221 */
1222static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1223{
1224        struct via82xx *chip = snd_pcm_substream_chip(substream);
1225        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1226        int err;
1227
1228        err = snd_via82xx_pcm_open(chip, viadev, substream);
1229        if (err < 0)
1230                return err;
1231        return 0;
1232}
1233
1234/*
1235 * open callback for playback on via823x DXS
1236 */
1237static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1238{
1239        struct via82xx *chip = snd_pcm_substream_chip(substream);
1240        struct viadev *viadev;
1241        unsigned int stream;
1242        int err;
1243
1244        viadev = &chip->devs[chip->playback_devno + substream->number];
1245        err = snd_via82xx_pcm_open(chip, viadev, substream);
1246        if (err < 0)
1247                return err;
1248        stream = viadev->reg_offset / 0x10;
1249        if (chip->dxs_controls[stream]) {
1250                chip->playback_volume[stream][0] =
1251                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1252                chip->playback_volume[stream][1] =
1253                                VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1254                chip->dxs_controls[stream]->vd[0].access &=
1255                        ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1256                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1257                               SNDRV_CTL_EVENT_MASK_INFO,
1258                               &chip->dxs_controls[stream]->id);
1259        }
1260        return 0;
1261}
1262
1263/*
1264 * open callback for playback on via823x multi-channel
1265 */
1266static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1267{
1268        struct via82xx *chip = snd_pcm_substream_chip(substream);
1269        struct viadev *viadev = &chip->devs[chip->multi_devno];
1270        int err;
1271        /* channels constraint for VIA8233A
1272         * 3 and 5 channels are not supported
1273         */
1274        static const unsigned int channels[] = {
1275                1, 2, 4, 6
1276        };
1277        static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1278                .count = ARRAY_SIZE(channels),
1279                .list = channels,
1280                .mask = 0,
1281        };
1282
1283        err = snd_via82xx_pcm_open(chip, viadev, substream);
1284        if (err < 0)
1285                return err;
1286        substream->runtime->hw.channels_max = 6;
1287        if (chip->revision == VIA_REV_8233A)
1288                snd_pcm_hw_constraint_list(substream->runtime, 0,
1289                                           SNDRV_PCM_HW_PARAM_CHANNELS,
1290                                           &hw_constraints_channels);
1291        return 0;
1292}
1293
1294/*
1295 * open callback for capture on via686 and via823x
1296 */
1297static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1298{
1299        struct via82xx *chip = snd_pcm_substream_chip(substream);
1300        struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1301
1302        return snd_via82xx_pcm_open(chip, viadev, substream);
1303}
1304
1305/*
1306 * close callback
1307 */
1308static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1309{
1310        struct via82xx *chip = snd_pcm_substream_chip(substream);
1311        struct viadev *viadev = substream->runtime->private_data;
1312        struct via_rate_lock *ratep;
1313
1314        /* release the rate lock */
1315        ratep = &chip->rates[viadev->direction];
1316        spin_lock_irq(&ratep->lock);
1317        ratep->used--;
1318        if (! ratep->used)
1319                ratep->rate = 0;
1320        spin_unlock_irq(&ratep->lock);
1321        if (! ratep->rate) {
1322                if (! viadev->direction) {
1323                        snd_ac97_update_power(chip->ac97,
1324                                              AC97_PCM_FRONT_DAC_RATE, 0);
1325                        snd_ac97_update_power(chip->ac97,
1326                                              AC97_PCM_SURR_DAC_RATE, 0);
1327                        snd_ac97_update_power(chip->ac97,
1328                                              AC97_PCM_LFE_DAC_RATE, 0);
1329                } else
1330                        snd_ac97_update_power(chip->ac97,
1331                                              AC97_PCM_LR_ADC_RATE, 0);
1332        }
1333        viadev->substream = NULL;
1334        return 0;
1335}
1336
1337static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1338{
1339        struct via82xx *chip = snd_pcm_substream_chip(substream);
1340        struct viadev *viadev = substream->runtime->private_data;
1341        unsigned int stream;
1342
1343        stream = viadev->reg_offset / 0x10;
1344        if (chip->dxs_controls[stream]) {
1345                chip->dxs_controls[stream]->vd[0].access |=
1346                        SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1347                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1348                               &chip->dxs_controls[stream]->id);
1349        }
1350        return snd_via82xx_pcm_close(substream);
1351}
1352
1353
1354/* via686 playback callbacks */
1355static const struct snd_pcm_ops snd_via686_playback_ops = {
1356        .open =         snd_via686_playback_open,
1357        .close =        snd_via82xx_pcm_close,
1358        .hw_params =    snd_via82xx_hw_params,
1359        .hw_free =      snd_via82xx_hw_free,
1360        .prepare =      snd_via686_playback_prepare,
1361        .trigger =      snd_via82xx_pcm_trigger,
1362        .pointer =      snd_via686_pcm_pointer,
1363};
1364
1365/* via686 capture callbacks */
1366static const struct snd_pcm_ops snd_via686_capture_ops = {
1367        .open =         snd_via82xx_capture_open,
1368        .close =        snd_via82xx_pcm_close,
1369        .hw_params =    snd_via82xx_hw_params,
1370        .hw_free =      snd_via82xx_hw_free,
1371        .prepare =      snd_via686_capture_prepare,
1372        .trigger =      snd_via82xx_pcm_trigger,
1373        .pointer =      snd_via686_pcm_pointer,
1374};
1375
1376/* via823x DSX playback callbacks */
1377static const struct snd_pcm_ops snd_via8233_playback_ops = {
1378        .open =         snd_via8233_playback_open,
1379        .close =        snd_via8233_playback_close,
1380        .hw_params =    snd_via82xx_hw_params,
1381        .hw_free =      snd_via82xx_hw_free,
1382        .prepare =      snd_via8233_playback_prepare,
1383        .trigger =      snd_via82xx_pcm_trigger,
1384        .pointer =      snd_via8233_pcm_pointer,
1385};
1386
1387/* via823x multi-channel playback callbacks */
1388static const struct snd_pcm_ops snd_via8233_multi_ops = {
1389        .open =         snd_via8233_multi_open,
1390        .close =        snd_via82xx_pcm_close,
1391        .hw_params =    snd_via82xx_hw_params,
1392        .hw_free =      snd_via82xx_hw_free,
1393        .prepare =      snd_via8233_multi_prepare,
1394        .trigger =      snd_via82xx_pcm_trigger,
1395        .pointer =      snd_via8233_pcm_pointer,
1396};
1397
1398/* via823x capture callbacks */
1399static const struct snd_pcm_ops snd_via8233_capture_ops = {
1400        .open =         snd_via82xx_capture_open,
1401        .close =        snd_via82xx_pcm_close,
1402        .hw_params =    snd_via82xx_hw_params,
1403        .hw_free =      snd_via82xx_hw_free,
1404        .prepare =      snd_via8233_capture_prepare,
1405        .trigger =      snd_via82xx_pcm_trigger,
1406        .pointer =      snd_via8233_pcm_pointer,
1407};
1408
1409
1410static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1411                        int shadow_pos, int direction)
1412{
1413        chip->devs[idx].reg_offset = reg_offset;
1414        chip->devs[idx].shadow_shift = shadow_pos * 4;
1415        chip->devs[idx].direction = direction;
1416        chip->devs[idx].port = chip->port + reg_offset;
1417}
1418
1419/*
1420 * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1421 */
1422static int snd_via8233_pcm_new(struct via82xx *chip)
1423{
1424        struct snd_pcm *pcm;
1425        struct snd_pcm_chmap *chmap;
1426        int i, err;
1427
1428        chip->playback_devno = 0;       /* x 4 */
1429        chip->multi_devno = 4;          /* x 1 */
1430        chip->capture_devno = 5;        /* x 2 */
1431        chip->num_devs = 7;
1432        chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1433
1434        /* PCM #0:  4 DSX playbacks and 1 capture */
1435        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1436        if (err < 0)
1437                return err;
1438        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1439        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1440        pcm->private_data = chip;
1441        strcpy(pcm->name, chip->card->shortname);
1442        chip->pcms[0] = pcm;
1443        /* set up playbacks */
1444        for (i = 0; i < 4; i++)
1445                init_viadev(chip, i, 0x10 * i, i, 0);
1446        /* capture */
1447        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1448
1449        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1450                                       &chip->pci->dev,
1451                                       64*1024, VIA_MAX_BUFSIZE);
1452
1453        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1454                                     snd_pcm_std_chmaps, 2, 0,
1455                                     &chmap);
1456        if (err < 0)
1457                return err;
1458
1459        /* PCM #1:  multi-channel playback and 2nd capture */
1460        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1461        if (err < 0)
1462                return err;
1463        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1464        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1465        pcm->private_data = chip;
1466        strcpy(pcm->name, chip->card->shortname);
1467        chip->pcms[1] = pcm;
1468        /* set up playback */
1469        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1470        /* set up capture */
1471        init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1472
1473        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1474                                       &chip->pci->dev,
1475                                       64*1024, VIA_MAX_BUFSIZE);
1476
1477        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1478                                     snd_pcm_alt_chmaps, 6, 0,
1479                                     &chmap);
1480        if (err < 0)
1481                return err;
1482        chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1483
1484        return 0;
1485}
1486
1487/*
1488 * create pcm instances for VIA8233A
1489 */
1490static int snd_via8233a_pcm_new(struct via82xx *chip)
1491{
1492        struct snd_pcm *pcm;
1493        struct snd_pcm_chmap *chmap;
1494        int err;
1495
1496        chip->multi_devno = 0;
1497        chip->playback_devno = 1;
1498        chip->capture_devno = 2;
1499        chip->num_devs = 3;
1500        chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1501
1502        /* PCM #0:  multi-channel playback and capture */
1503        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1504        if (err < 0)
1505                return err;
1506        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1507        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1508        pcm->private_data = chip;
1509        strcpy(pcm->name, chip->card->shortname);
1510        chip->pcms[0] = pcm;
1511        /* set up playback */
1512        init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1513        /* capture */
1514        init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1515
1516        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1517                                       &chip->pci->dev,
1518                                       64*1024, VIA_MAX_BUFSIZE);
1519
1520        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1521                                     snd_pcm_alt_chmaps, 6, 0,
1522                                     &chmap);
1523        if (err < 0)
1524                return err;
1525        chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1526
1527        /* SPDIF supported? */
1528        if (! ac97_can_spdif(chip->ac97))
1529                return 0;
1530
1531        /* PCM #1:  DXS3 playback (for spdif) */
1532        err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1533        if (err < 0)
1534                return err;
1535        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1536        pcm->private_data = chip;
1537        strcpy(pcm->name, chip->card->shortname);
1538        chip->pcms[1] = pcm;
1539        /* set up playback */
1540        init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1541
1542        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1543                                       &chip->pci->dev,
1544                                       64*1024, VIA_MAX_BUFSIZE);
1545        return 0;
1546}
1547
1548/*
1549 * create a pcm instance for via686a/b
1550 */
1551static int snd_via686_pcm_new(struct via82xx *chip)
1552{
1553        struct snd_pcm *pcm;
1554        int err;
1555
1556        chip->playback_devno = 0;
1557        chip->capture_devno = 1;
1558        chip->num_devs = 2;
1559        chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1560
1561        err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1562        if (err < 0)
1563                return err;
1564        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1565        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1566        pcm->private_data = chip;
1567        strcpy(pcm->name, chip->card->shortname);
1568        chip->pcms[0] = pcm;
1569        init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1570        init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1571
1572        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1573                                       &chip->pci->dev,
1574                                       64*1024, VIA_MAX_BUFSIZE);
1575        return 0;
1576}
1577
1578
1579/*
1580 *  Mixer part
1581 */
1582
1583static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1584                                           struct snd_ctl_elem_info *uinfo)
1585{
1586        /* formerly they were "Line" and "Mic", but it looks like that they
1587         * have nothing to do with the actual physical connections...
1588         */
1589        static const char * const texts[2] = {
1590                "Input1", "Input2"
1591        };
1592        return snd_ctl_enum_info(uinfo, 1, 2, texts);
1593}
1594
1595static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1596                                          struct snd_ctl_elem_value *ucontrol)
1597{
1598        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1599        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1600        ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1601        return 0;
1602}
1603
1604static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1605                                          struct snd_ctl_elem_value *ucontrol)
1606{
1607        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1608        unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1609        u8 val, oval;
1610
1611        spin_lock_irq(&chip->reg_lock);
1612        oval = inb(port);
1613        val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1614        if (ucontrol->value.enumerated.item[0])
1615                val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1616        if (val != oval)
1617                outb(val, port);
1618        spin_unlock_irq(&chip->reg_lock);
1619        return val != oval;
1620}
1621
1622static struct snd_kcontrol_new snd_via8233_capture_source = {
1623        .name = "Input Source Select",
1624        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1625        .info = snd_via8233_capture_source_info,
1626        .get = snd_via8233_capture_source_get,
1627        .put = snd_via8233_capture_source_put,
1628};
1629
1630#define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1631
1632static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1633                                      struct snd_ctl_elem_value *ucontrol)
1634{
1635        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1636        u8 val;
1637
1638        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1639        ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1640        return 0;
1641}
1642
1643static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1644                                      struct snd_ctl_elem_value *ucontrol)
1645{
1646        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1647        u8 val, oval;
1648
1649        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1650        val = oval & ~VIA8233_SPDIF_DX3;
1651        if (ucontrol->value.integer.value[0])
1652                val |= VIA8233_SPDIF_DX3;
1653        /* save the spdif flag for rate filtering */
1654        chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1655        if (val != oval) {
1656                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1657                return 1;
1658        }
1659        return 0;
1660}
1661
1662static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = {
1663        .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1664        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1665        .info = snd_via8233_dxs3_spdif_info,
1666        .get = snd_via8233_dxs3_spdif_get,
1667        .put = snd_via8233_dxs3_spdif_put,
1668};
1669
1670static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1671                                       struct snd_ctl_elem_info *uinfo)
1672{
1673        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1674        uinfo->count = 2;
1675        uinfo->value.integer.min = 0;
1676        uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1677        return 0;
1678}
1679
1680static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1681                                      struct snd_ctl_elem_value *ucontrol)
1682{
1683        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1684        unsigned int idx = kcontrol->id.subdevice;
1685
1686        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1687        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1688        return 0;
1689}
1690
1691static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1692                                         struct snd_ctl_elem_value *ucontrol)
1693{
1694        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1695        ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1696        ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1697        return 0;
1698}
1699
1700static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1701                                      struct snd_ctl_elem_value *ucontrol)
1702{
1703        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1704        unsigned int idx = kcontrol->id.subdevice;
1705        unsigned long port = chip->port + 0x10 * idx;
1706        unsigned char val;
1707        int i, change = 0;
1708
1709        for (i = 0; i < 2; i++) {
1710                val = ucontrol->value.integer.value[i];
1711                if (val > VIA_DXS_MAX_VOLUME)
1712                        val = VIA_DXS_MAX_VOLUME;
1713                val = VIA_DXS_MAX_VOLUME - val;
1714                change |= val != chip->playback_volume[idx][i];
1715                if (change) {
1716                        chip->playback_volume[idx][i] = val;
1717                        outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1718                }
1719        }
1720        return change;
1721}
1722
1723static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1724                                         struct snd_ctl_elem_value *ucontrol)
1725{
1726        struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1727        unsigned int idx;
1728        unsigned char val;
1729        int i, change = 0;
1730
1731        for (i = 0; i < 2; i++) {
1732                val = ucontrol->value.integer.value[i];
1733                if (val > VIA_DXS_MAX_VOLUME)
1734                        val = VIA_DXS_MAX_VOLUME;
1735                val = VIA_DXS_MAX_VOLUME - val;
1736                if (val != chip->playback_volume_c[i]) {
1737                        change = 1;
1738                        chip->playback_volume_c[i] = val;
1739                        for (idx = 0; idx < 4; idx++) {
1740                                unsigned long port = chip->port + 0x10 * idx;
1741                                chip->playback_volume[idx][i] = val;
1742                                outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1743                        }
1744                }
1745        }
1746        return change;
1747}
1748
1749static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1750
1751static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = {
1752        .name = "PCM Playback Volume",
1753        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1754        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1755                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1756        .info = snd_via8233_dxs_volume_info,
1757        .get = snd_via8233_pcmdxs_volume_get,
1758        .put = snd_via8233_pcmdxs_volume_put,
1759        .tlv = { .p = db_scale_dxs }
1760};
1761
1762static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = {
1763        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1764        .device = 0,
1765        /* .subdevice set later */
1766        .name = "PCM Playback Volume",
1767        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1768                  SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1769                  SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1770        .info = snd_via8233_dxs_volume_info,
1771        .get = snd_via8233_dxs_volume_get,
1772        .put = snd_via8233_dxs_volume_put,
1773        .tlv = { .p = db_scale_dxs }
1774};
1775
1776/*
1777 */
1778
1779static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1780{
1781        struct via82xx *chip = bus->private_data;
1782        chip->ac97_bus = NULL;
1783}
1784
1785static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1786{
1787        struct via82xx *chip = ac97->private_data;
1788        chip->ac97 = NULL;
1789}
1790
1791static const struct ac97_quirk ac97_quirks[] = {
1792        {
1793                .subvendor = 0x1106,
1794                .subdevice = 0x4161,
1795                .codec_id = 0x56494161, /* VT1612A */
1796                .name = "Soltek SL-75DRV5",
1797                .type = AC97_TUNE_NONE
1798        },
1799        {       /* FIXME: which codec? */
1800                .subvendor = 0x1106,
1801                .subdevice = 0x4161,
1802                .name = "ASRock K7VT2",
1803                .type = AC97_TUNE_HP_ONLY
1804        },
1805        {
1806                .subvendor = 0x110a,
1807                .subdevice = 0x0079,
1808                .name = "Fujitsu Siemens D1289",
1809                .type = AC97_TUNE_HP_ONLY
1810        },
1811        {
1812                .subvendor = 0x1019,
1813                .subdevice = 0x0a81,
1814                .name = "ECS K7VTA3",
1815                .type = AC97_TUNE_HP_ONLY
1816        },
1817        {
1818                .subvendor = 0x1019,
1819                .subdevice = 0x0a85,
1820                .name = "ECS L7VMM2",
1821                .type = AC97_TUNE_HP_ONLY
1822        },
1823        {
1824                .subvendor = 0x1019,
1825                .subdevice = 0x1841,
1826                .name = "ECS K7VTA3",
1827                .type = AC97_TUNE_HP_ONLY
1828        },
1829        {
1830                .subvendor = 0x1849,
1831                .subdevice = 0x3059,
1832                .name = "ASRock K7VM2",
1833                .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1834        },
1835        {
1836                .subvendor = 0x14cd,
1837                .subdevice = 0x7002,
1838                .name = "Unknown",
1839                .type = AC97_TUNE_ALC_JACK
1840        },
1841        {
1842                .subvendor = 0x1071,
1843                .subdevice = 0x8590,
1844                .name = "Mitac Mobo",
1845                .type = AC97_TUNE_ALC_JACK
1846        },
1847        {
1848                .subvendor = 0x161f,
1849                .subdevice = 0x202b,
1850                .name = "Arima Notebook",
1851                .type = AC97_TUNE_HP_ONLY,
1852        },
1853        {
1854                .subvendor = 0x161f,
1855                .subdevice = 0x2032,
1856                .name = "Targa Traveller 811",
1857                .type = AC97_TUNE_HP_ONLY,
1858        },
1859        {
1860                .subvendor = 0x161f,
1861                .subdevice = 0x2032,
1862                .name = "m680x",
1863                .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1864        },
1865        {
1866                .subvendor = 0x1297,
1867                .subdevice = 0xa232,
1868                .name = "Shuttle AK32VN",
1869                .type = AC97_TUNE_HP_ONLY
1870        },
1871        { } /* terminator */
1872};
1873
1874static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1875{
1876        struct snd_ac97_template ac97;
1877        int err;
1878        static const struct snd_ac97_bus_ops ops = {
1879                .write = snd_via82xx_codec_write,
1880                .read = snd_via82xx_codec_read,
1881                .wait = snd_via82xx_codec_wait,
1882        };
1883
1884        err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
1885        if (err < 0)
1886                return err;
1887        chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1888        chip->ac97_bus->clock = chip->ac97_clock;
1889
1890        memset(&ac97, 0, sizeof(ac97));
1891        ac97.private_data = chip;
1892        ac97.private_free = snd_via82xx_mixer_free_ac97;
1893        ac97.pci = chip->pci;
1894        ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1895        err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
1896        if (err < 0)
1897                return err;
1898
1899        snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1900
1901        if (chip->chip_type != TYPE_VIA686) {
1902                /* use slot 10/11 */
1903                snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1904        }
1905
1906        return 0;
1907}
1908
1909#ifdef SUPPORT_JOYSTICK
1910#define JOYSTICK_ADDR   0x200
1911static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1912{
1913        struct gameport *gp;
1914        struct resource *r;
1915
1916        if (!joystick)
1917                return -ENODEV;
1918
1919        r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1920        if (!r) {
1921                dev_warn(chip->card->dev, "cannot reserve joystick port %#x\n",
1922                       JOYSTICK_ADDR);
1923                return -EBUSY;
1924        }
1925
1926        chip->gameport = gp = gameport_allocate_port();
1927        if (!gp) {
1928                dev_err(chip->card->dev,
1929                        "cannot allocate memory for gameport\n");
1930                release_and_free_resource(r);
1931                return -ENOMEM;
1932        }
1933
1934        gameport_set_name(gp, "VIA686 Gameport");
1935        gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1936        gameport_set_dev_parent(gp, &chip->pci->dev);
1937        gp->io = JOYSTICK_ADDR;
1938        gameport_set_port_data(gp, r);
1939
1940        /* Enable legacy joystick port */
1941        *legacy |= VIA_FUNC_ENABLE_GAME;
1942        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1943
1944        gameport_register_port(chip->gameport);
1945
1946        return 0;
1947}
1948
1949static void snd_via686_free_gameport(struct via82xx *chip)
1950{
1951        if (chip->gameport) {
1952                struct resource *r = gameport_get_port_data(chip->gameport);
1953
1954                gameport_unregister_port(chip->gameport);
1955                chip->gameport = NULL;
1956                release_and_free_resource(r);
1957        }
1958}
1959#else
1960static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1961{
1962        return -ENOSYS;
1963}
1964static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1965#endif
1966
1967
1968/*
1969 *
1970 */
1971
1972static int snd_via8233_init_misc(struct via82xx *chip)
1973{
1974        int i, err, caps;
1975        unsigned char val;
1976
1977        caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1978        for (i = 0; i < caps; i++) {
1979                snd_via8233_capture_source.index = i;
1980                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1981                if (err < 0)
1982                        return err;
1983        }
1984        if (ac97_can_spdif(chip->ac97)) {
1985                err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1986                if (err < 0)
1987                        return err;
1988        }
1989        if (chip->chip_type != TYPE_VIA8233A) {
1990                /* when no h/w PCM volume control is found, use DXS volume control
1991                 * as the PCM vol control
1992                 */
1993                struct snd_ctl_elem_id sid;
1994                memset(&sid, 0, sizeof(sid));
1995                strcpy(sid.name, "PCM Playback Volume");
1996                sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1997                if (! snd_ctl_find_id(chip->card, &sid)) {
1998                        dev_info(chip->card->dev,
1999                                 "Using DXS as PCM Playback\n");
2000                        err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
2001                        if (err < 0)
2002                                return err;
2003                }
2004                else /* Using DXS when PCM emulation is enabled is really weird */
2005                {
2006                        for (i = 0; i < 4; ++i) {
2007                                struct snd_kcontrol *kctl;
2008
2009                                kctl = snd_ctl_new1(
2010                                        &snd_via8233_dxs_volume_control, chip);
2011                                if (!kctl)
2012                                        return -ENOMEM;
2013                                kctl->id.subdevice = i;
2014                                err = snd_ctl_add(chip->card, kctl);
2015                                if (err < 0)
2016                                        return err;
2017                                chip->dxs_controls[i] = kctl;
2018                        }
2019                }
2020        }
2021        /* select spdif data slot 10/11 */
2022        pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2023        val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2024        val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2025        pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2026
2027        return 0;
2028}
2029
2030static int snd_via686_init_misc(struct via82xx *chip)
2031{
2032        unsigned char legacy, legacy_cfg;
2033        int rev_h = 0;
2034
2035        legacy = chip->old_legacy;
2036        legacy_cfg = chip->old_legacy_cfg;
2037        legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2038        legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2039        if (chip->revision >= VIA_REV_686_H) {
2040                rev_h = 1;
2041                if (mpu_port >= 0x200) {        /* force MIDI */
2042                        mpu_port &= 0xfffc;
2043                        pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2044#ifdef CONFIG_PM_SLEEP
2045                        chip->mpu_port_saved = mpu_port;
2046#endif
2047                } else {
2048                        mpu_port = pci_resource_start(chip->pci, 2);
2049                }
2050        } else {
2051                switch (mpu_port) {     /* force MIDI */
2052                case 0x300:
2053                case 0x310:
2054                case 0x320:
2055                case 0x330:
2056                        legacy_cfg &= ~(3 << 2);
2057                        legacy_cfg |= (mpu_port & 0x0030) >> 2;
2058                        break;
2059                default:                        /* no, use BIOS settings */
2060                        if (legacy & VIA_FUNC_ENABLE_MIDI)
2061                                mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2062                        break;
2063                }
2064        }
2065        if (mpu_port >= 0x200)
2066                chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401");
2067        if (chip->mpu_res) {
2068                if (rev_h)
2069                        legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2070                legacy |= VIA_FUNC_ENABLE_MIDI;
2071        } else {
2072                if (rev_h)
2073                        legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2074                legacy &= ~VIA_FUNC_ENABLE_MIDI;
2075                mpu_port = 0;
2076        }
2077
2078        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2079        pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2080        if (chip->mpu_res) {
2081                if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2082                                        mpu_port, MPU401_INFO_INTEGRATED |
2083                                        MPU401_INFO_IRQ_HOOK, -1,
2084                                        &chip->rmidi) < 0) {
2085                        dev_warn(chip->card->dev,
2086                                 "unable to initialize MPU-401 at 0x%lx, skipping\n",
2087                                 mpu_port);
2088                        legacy &= ~VIA_FUNC_ENABLE_MIDI;
2089                } else {
2090                        legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2091                }
2092                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2093        }
2094
2095        snd_via686_create_gameport(chip, &legacy);
2096
2097#ifdef CONFIG_PM_SLEEP
2098        chip->legacy_saved = legacy;
2099        chip->legacy_cfg_saved = legacy_cfg;
2100#endif
2101
2102        return 0;
2103}
2104
2105
2106/*
2107 * proc interface
2108 */
2109static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2110                                  struct snd_info_buffer *buffer)
2111{
2112        struct via82xx *chip = entry->private_data;
2113        int i;
2114        
2115        snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2116        for (i = 0; i < 0xa0; i += 4) {
2117                snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2118        }
2119}
2120
2121static void snd_via82xx_proc_init(struct via82xx *chip)
2122{
2123        snd_card_ro_proc_new(chip->card, "via82xx", chip,
2124                             snd_via82xx_proc_read);
2125}
2126
2127/*
2128 *
2129 */
2130
2131static int snd_via82xx_chip_init(struct via82xx *chip)
2132{
2133        unsigned int val;
2134        unsigned long end_time;
2135        unsigned char pval;
2136
2137#if 0 /* broken on K7M? */
2138        if (chip->chip_type == TYPE_VIA686)
2139                /* disable all legacy ports */
2140                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2141#endif
2142        pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2143        if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2144                /* deassert ACLink reset, force SYNC */
2145                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2146                                      VIA_ACLINK_CTRL_ENABLE |
2147                                      VIA_ACLINK_CTRL_RESET |
2148                                      VIA_ACLINK_CTRL_SYNC);
2149                udelay(100);
2150#if 1 /* FIXME: should we do full reset here for all chip models? */
2151                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2152                udelay(100);
2153#else
2154                /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2155                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2156                                      VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2157                udelay(2);
2158#endif
2159                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2160                /* note - FM data out has trouble with non VRA codecs !! */
2161                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2162                udelay(100);
2163        }
2164        
2165        /* Make sure VRA is enabled, in case we didn't do a
2166         * complete codec reset, above */
2167        pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2168        if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2169                /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2170                /* note - FM data out has trouble with non VRA codecs !! */
2171                pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2172                udelay(100);
2173        }
2174
2175        /* wait until codec ready */
2176        end_time = jiffies + msecs_to_jiffies(750);
2177        do {
2178                pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2179                if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2180                        break;
2181                schedule_timeout_uninterruptible(1);
2182        } while (time_before(jiffies, end_time));
2183
2184        val = snd_via82xx_codec_xread(chip);
2185        if (val & VIA_REG_AC97_BUSY)
2186                dev_err(chip->card->dev,
2187                        "AC'97 codec is not ready [0x%x]\n", val);
2188
2189#if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2190        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2191                                 VIA_REG_AC97_SECONDARY_VALID |
2192                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2193        end_time = jiffies + msecs_to_jiffies(750);
2194        snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2195                                 VIA_REG_AC97_SECONDARY_VALID |
2196                                 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2197        do {
2198                val = snd_via82xx_codec_xread(chip);
2199                if (val & VIA_REG_AC97_SECONDARY_VALID) {
2200                        chip->ac97_secondary = 1;
2201                        goto __ac97_ok2;
2202                }
2203                schedule_timeout_uninterruptible(1);
2204        } while (time_before(jiffies, end_time));
2205        /* This is ok, the most of motherboards have only one codec */
2206
2207      __ac97_ok2:
2208#endif
2209
2210        if (chip->chip_type == TYPE_VIA686) {
2211                /* route FM trap to IRQ, disable FM trap */
2212                pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2213                /* disable all GPI interrupts */
2214                outl(0, VIAREG(chip, GPI_INTR));
2215        }
2216
2217        if (chip->chip_type != TYPE_VIA686) {
2218                /* Workaround for Award BIOS bug:
2219                 * DXS channels don't work properly with VRA if MC97 is disabled.
2220                 */
2221                struct pci_dev *pci;
2222                pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2223                if (pci) {
2224                        unsigned char data;
2225                        pci_read_config_byte(pci, 0x44, &data);
2226                        pci_write_config_byte(pci, 0x44, data | 0x40);
2227                        pci_dev_put(pci);
2228                }
2229        }
2230
2231        if (chip->chip_type != TYPE_VIA8233A) {
2232                int i, idx;
2233                for (idx = 0; idx < 4; idx++) {
2234                        unsigned long port = chip->port + 0x10 * idx;
2235                        for (i = 0; i < 2; i++) {
2236                                chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2237                                outb(chip->playback_volume_c[i],
2238                                     port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2239                        }
2240                }
2241        }
2242
2243        return 0;
2244}
2245
2246#ifdef CONFIG_PM_SLEEP
2247/*
2248 * power management
2249 */
2250static int snd_via82xx_suspend(struct device *dev)
2251{
2252        struct snd_card *card = dev_get_drvdata(dev);
2253        struct via82xx *chip = card->private_data;
2254        int i;
2255
2256        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2257        for (i = 0; i < chip->num_devs; i++)
2258                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2259        snd_ac97_suspend(chip->ac97);
2260
2261        /* save misc values */
2262        if (chip->chip_type != TYPE_VIA686) {
2263                pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2264                chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2265                chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2266        }
2267
2268        return 0;
2269}
2270
2271static int snd_via82xx_resume(struct device *dev)
2272{
2273        struct snd_card *card = dev_get_drvdata(dev);
2274        struct via82xx *chip = card->private_data;
2275        int i;
2276
2277        snd_via82xx_chip_init(chip);
2278
2279        if (chip->chip_type == TYPE_VIA686) {
2280                if (chip->mpu_port_saved)
2281                        pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2282                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2283                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2284        } else {
2285                pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2286                outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2287                outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2288        }
2289
2290        snd_ac97_resume(chip->ac97);
2291
2292        for (i = 0; i < chip->num_devs; i++)
2293                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2294
2295        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2296        return 0;
2297}
2298
2299static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2300#define SND_VIA82XX_PM_OPS      &snd_via82xx_pm
2301#else
2302#define SND_VIA82XX_PM_OPS      NULL
2303#endif /* CONFIG_PM_SLEEP */
2304
2305static int snd_via82xx_free(struct via82xx *chip)
2306{
2307        unsigned int i;
2308
2309        if (chip->irq < 0)
2310                goto __end_hw;
2311        /* disable interrupts */
2312        for (i = 0; i < chip->num_devs; i++)
2313                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2314
2315        if (chip->irq >= 0)
2316                free_irq(chip->irq, chip);
2317 __end_hw:
2318        release_and_free_resource(chip->mpu_res);
2319        pci_release_regions(chip->pci);
2320
2321        if (chip->chip_type == TYPE_VIA686) {
2322                snd_via686_free_gameport(chip);
2323                pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2324                pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2325        }
2326        pci_disable_device(chip->pci);
2327        kfree(chip);
2328        return 0;
2329}
2330
2331static int snd_via82xx_dev_free(struct snd_device *device)
2332{
2333        struct via82xx *chip = device->device_data;
2334        return snd_via82xx_free(chip);
2335}
2336
2337static int snd_via82xx_create(struct snd_card *card,
2338                              struct pci_dev *pci,
2339                              int chip_type,
2340                              int revision,
2341                              unsigned int ac97_clock,
2342                              struct via82xx **r_via)
2343{
2344        struct via82xx *chip;
2345        int err;
2346        static const struct snd_device_ops ops = {
2347                .dev_free =     snd_via82xx_dev_free,
2348        };
2349
2350        err = pci_enable_device(pci);
2351        if (err < 0)
2352                return err;
2353
2354        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2355        if (!chip) {
2356                pci_disable_device(pci);
2357                return -ENOMEM;
2358        }
2359
2360        chip->chip_type = chip_type;
2361        chip->revision = revision;
2362
2363        spin_lock_init(&chip->reg_lock);
2364        spin_lock_init(&chip->rates[0].lock);
2365        spin_lock_init(&chip->rates[1].lock);
2366        chip->card = card;
2367        chip->pci = pci;
2368        chip->irq = -1;
2369
2370        pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2371        pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2372        pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2373                              chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2374
2375        err = pci_request_regions(pci, card->driver);
2376        if (err < 0) {
2377                kfree(chip);
2378                pci_disable_device(pci);
2379                return err;
2380        }
2381        chip->port = pci_resource_start(pci, 0);
2382        if (request_irq(pci->irq,
2383                        chip_type == TYPE_VIA8233 ?
2384                        snd_via8233_interrupt : snd_via686_interrupt,
2385                        IRQF_SHARED,
2386                        KBUILD_MODNAME, chip)) {
2387                dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2388                snd_via82xx_free(chip);
2389                return -EBUSY;
2390        }
2391        chip->irq = pci->irq;
2392        card->sync_irq = chip->irq;
2393        if (ac97_clock >= 8000 && ac97_clock <= 48000)
2394                chip->ac97_clock = ac97_clock;
2395
2396        err = snd_via82xx_chip_init(chip);
2397        if (err < 0) {
2398                snd_via82xx_free(chip);
2399                return err;
2400        }
2401
2402        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
2403        if (err < 0) {
2404                snd_via82xx_free(chip);
2405                return err;
2406        }
2407
2408        /* The 8233 ac97 controller does not implement the master bit
2409         * in the pci command register. IMHO this is a violation of the PCI spec.
2410         * We call pci_set_master here because it does not hurt. */
2411        pci_set_master(pci);
2412
2413        *r_via = chip;
2414        return 0;
2415}
2416
2417struct via823x_info {
2418        int revision;
2419        char *name;
2420        int type;
2421};
2422static const struct via823x_info via823x_cards[] = {
2423        { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2424        { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2425        { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2426        { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2427        { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2428        { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2429        { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2430};
2431
2432/*
2433 * auto detection of DXS channel supports.
2434 */
2435
2436static const struct snd_pci_quirk dxs_allowlist[] = {
2437        SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2438        SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2439        SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2440        SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2441        SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2442        SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2443        SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2444        SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2445        SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2446        SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2447        SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2448        SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2449        SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2450        SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2451        SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2452        SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2453        SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2454        SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2455        SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2456        SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2457        SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2458        SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2459        SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2460        SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2461        SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2462        SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2463        SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2464        SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2465        SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2466        SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2467        SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2468        SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2469        SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2470        SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2471        SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2472        SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2473        SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2474        SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2475        SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2476        SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2477        { } /* terminator */
2478};
2479
2480static int check_dxs_list(struct pci_dev *pci, int revision)
2481{
2482        const struct snd_pci_quirk *w;
2483
2484        w = snd_pci_quirk_lookup(pci, dxs_allowlist);
2485        if (w) {
2486                dev_dbg(&pci->dev, "DXS allow list for %s found\n",
2487                            snd_pci_quirk_name(w));
2488                return w->value;
2489        }
2490
2491        /* for newer revision, default to DXS_SRC */
2492        if (revision >= VIA_REV_8235)
2493                return VIA_DXS_SRC;
2494
2495        /*
2496         * not detected, try 48k rate only to be sure.
2497         */
2498        dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n");
2499        dev_info(&pci->dev, "         Please try dxs_support=5 option\n");
2500        dev_info(&pci->dev, "         and report if it works on your machine.\n");
2501        dev_info(&pci->dev, "         For more details, read ALSA-Configuration.txt.\n");
2502        return VIA_DXS_48K;
2503};
2504
2505static int snd_via82xx_probe(struct pci_dev *pci,
2506                             const struct pci_device_id *pci_id)
2507{
2508        struct snd_card *card;
2509        struct via82xx *chip;
2510        int chip_type = 0, card_type;
2511        unsigned int i;
2512        int err;
2513
2514        err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2515        if (err < 0)
2516                return err;
2517
2518        card_type = pci_id->driver_data;
2519        switch (card_type) {
2520        case TYPE_CARD_VIA686:
2521                strcpy(card->driver, "VIA686A");
2522                sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2523                chip_type = TYPE_VIA686;
2524                break;
2525        case TYPE_CARD_VIA8233:
2526                chip_type = TYPE_VIA8233;
2527                sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2528                for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2529                        if (pci->revision == via823x_cards[i].revision) {
2530                                chip_type = via823x_cards[i].type;
2531                                strcpy(card->shortname, via823x_cards[i].name);
2532                                break;
2533                        }
2534                }
2535                if (chip_type != TYPE_VIA8233A) {
2536                        if (dxs_support == VIA_DXS_AUTO)
2537                                dxs_support = check_dxs_list(pci, pci->revision);
2538                        /* force to use VIA8233 or 8233A model according to
2539                         * dxs_support module option
2540                         */
2541                        if (dxs_support == VIA_DXS_DISABLE)
2542                                chip_type = TYPE_VIA8233A;
2543                        else
2544                                chip_type = TYPE_VIA8233;
2545                }
2546                if (chip_type == TYPE_VIA8233A)
2547                        strcpy(card->driver, "VIA8233A");
2548                else if (pci->revision >= VIA_REV_8237)
2549                        strcpy(card->driver, "VIA8237"); /* no slog assignment */
2550                else
2551                        strcpy(card->driver, "VIA8233");
2552                break;
2553        default:
2554                dev_err(card->dev, "invalid card type %d\n", card_type);
2555                err = -EINVAL;
2556                goto __error;
2557        }
2558                
2559        err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2560                                 ac97_clock, &chip);
2561        if (err < 0)
2562                goto __error;
2563        card->private_data = chip;
2564        err = snd_via82xx_mixer_new(chip, ac97_quirk);
2565        if (err < 0)
2566                goto __error;
2567
2568        if (chip_type == TYPE_VIA686) {
2569                err = snd_via686_pcm_new(chip);
2570                if (err < 0)
2571                        goto __error;
2572                err = snd_via686_init_misc(chip);
2573                if (err < 0)
2574                        goto __error;
2575        } else {
2576                if (chip_type == TYPE_VIA8233A) {
2577                        err = snd_via8233a_pcm_new(chip);
2578                        if (err < 0)
2579                                goto __error;
2580                        // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2581                } else {
2582                        err = snd_via8233_pcm_new(chip);
2583                        if (err < 0)
2584                                goto __error;
2585                        if (dxs_support == VIA_DXS_48K)
2586                                chip->dxs_fixed = 1;
2587                        else if (dxs_support == VIA_DXS_NO_VRA)
2588                                chip->no_vra = 1;
2589                        else if (dxs_support == VIA_DXS_SRC) {
2590                                chip->no_vra = 1;
2591                                chip->dxs_src = 1;
2592                        }
2593                }
2594                err = snd_via8233_init_misc(chip);
2595                if (err < 0)
2596                        goto __error;
2597        }
2598
2599        /* disable interrupts */
2600        for (i = 0; i < chip->num_devs; i++)
2601                snd_via82xx_channel_reset(chip, &chip->devs[i]);
2602
2603        snprintf(card->longname, sizeof(card->longname),
2604                 "%s with %s at %#lx, irq %d", card->shortname,
2605                 snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2606
2607        snd_via82xx_proc_init(chip);
2608
2609        err = snd_card_register(card);
2610        if (err < 0) {
2611                snd_card_free(card);
2612                return err;
2613        }
2614        pci_set_drvdata(pci, card);
2615        return 0;
2616
2617 __error:
2618        snd_card_free(card);
2619        return err;
2620}
2621
2622static void snd_via82xx_remove(struct pci_dev *pci)
2623{
2624        snd_card_free(pci_get_drvdata(pci));
2625}
2626
2627static struct pci_driver via82xx_driver = {
2628        .name = KBUILD_MODNAME,
2629        .id_table = snd_via82xx_ids,
2630        .probe = snd_via82xx_probe,
2631        .remove = snd_via82xx_remove,
2632        .driver = {
2633                .pm = SND_VIA82XX_PM_OPS,
2634        },
2635};
2636
2637module_pci_driver(via82xx_driver);
2638