sound/pci/via82xx.c

   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
  56 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  57 MODULE_DESCRIPTION("VIA VT82xx audio");
  58 MODULE_LICENSE("GPL");
  59
  60 #if IS_REACHABLE(CONFIG_GAMEPORT)
  61 #define SUPPORT_JOYSTICK 1
  62 #endif
  63
  64 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
  65 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  66 static long mpu_port;
  67 #ifdef SUPPORT_JOYSTICK
  68 static bool joystick;
  69 #endif
  70 static int ac97_clock = 48000;
  71 static char *ac97_quirk;
  72 static int dxs_support;
  73 static int dxs_init_volume = 31;
  74 static int nodelay;
  75
  76 module_param(index, int, 0444);
  77 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
  78 module_param(id, charp, 0444);
  79 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
  80 module_param_hw(mpu_port, long, ioport, 0444);
  81 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
  82 #ifdef SUPPORT_JOYSTICK
  83 module_param(joystick, bool, 0444);
  84 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
  85 #endif
  86 module_param(ac97_clock, int, 0444);
  87 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
  88 module_param(ac97_quirk, charp, 0444);
  89 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
  90 module_param(dxs_support, int, 0444);
  91 MODULE_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)");
  92 module_param(dxs_init_volume, int, 0644);
  93 MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
  94 module_param(nodelay, int, 0444);
  95 MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
  96
  97 /* just for backward compatibility */
  98 static bool enable;
  99 module_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) \
 164 enum {\
 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 */
 175 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
 176 DEFINE_VIA_REGSET(CAPTURE, 0x10);
 177 DEFINE_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 */
 223 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
 224 DEFINE_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
 301 struct 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
 309 struct 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
 329 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
 330 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
 331
 332 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
 333
 334 struct via_rate_lock {
 335         spinlock_t lock;
 336         int rate;
 337         int used;
 338 };
 339
 340 struct 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         unsigned char legacy_saved;
 351         unsigned char legacy_cfg_saved;
 352         unsigned char spdif_ctrl_saved;
 353         unsigned char capture_src_saved[2];
 354         unsigned int mpu_port_saved;
 355
 356         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 357         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 358
 359         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 360
 361         struct pci_dev *pci;
 362         struct snd_card *card;
 363
 364         unsigned int num_devs;
 365         unsigned int playback_devno, multi_devno, capture_devno;
 366         struct viadev devs[VIA_MAX_DEVS];
 367         struct via_rate_lock rates[2]; /* playback and capture */
 368         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 369         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 370         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 371         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 372
 373         struct snd_pcm *pcms[2];
 374         struct snd_rawmidi *rmidi;
 375         struct snd_kcontrol *dxs_controls[4];
 376
 377         struct snd_ac97_bus *ac97_bus;
 378         struct snd_ac97 *ac97;
 379         unsigned int ac97_clock;
 380         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 381
 382         spinlock_t reg_lock;
 383         struct snd_info_entry *proc_entry;
 384
 385 #ifdef SUPPORT_JOYSTICK
 386         struct gameport *gameport;
 387 #endif
 388 };
 389
 390 static const struct pci_device_id snd_via82xx_ids[] = {
 391         /* 0x1106, 0x3058 */
 392         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 393         /* 0x1106, 0x3059 */
 394         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 395         { 0, }
 396 };
 397
 398 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 399
 400 /*
 401  */
 402
 403 /*
 404  * allocate and initialize the descriptor buffers
 405  * periods = number of periods
 406  * fragsize = period size in bytes
 407  */
 408 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 409                            struct pci_dev *pci,
 410                            unsigned int periods, unsigned int fragsize)
 411 {
 412         unsigned int i, idx, ofs, rest;
 413         struct via82xx *chip = snd_pcm_substream_chip(substream);
 414         __le32 *pgtbl;
 415
 416         if (dev->table.area == NULL) {
 417                 /* the start of each lists must be aligned to 8 bytes,
 418                  * but the kernel pages are much bigger, so we don't care
 419                  */
 420                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
 421                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 422                                         &dev->table) < 0)
 423                         return -ENOMEM;
 424         }
 425         if (! dev->idx_table) {
 426                 dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
 427                                                sizeof(*dev->idx_table),
 428                                                GFP_KERNEL);
 429                 if (! dev->idx_table)
 430                         return -ENOMEM;
 431         }
 432
 433         /* fill the entries */
 434         idx = 0;
 435         ofs = 0;
 436         pgtbl = (__le32 *)dev->table.area;
 437         for (i = 0; i < periods; i++) {
 438                 rest = fragsize;
 439                 /* fill descriptors for a period.
 440                  * a period can be split to several descriptors if it's
 441                  * over page boundary.
 442                  */
 443                 do {
 444                         unsigned int r;
 445                         unsigned int flag;
 446                         unsigned int addr;
 447
 448                         if (idx >= VIA_TABLE_SIZE) {
 449                                 dev_err(&pci->dev, "too much table size!\n");
 450                                 return -EINVAL;
 451                         }
 452                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 453                         pgtbl[idx << 1] = cpu_to_le32(addr);
 454                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 455                         rest -= r;
 456                         if (! rest) {
 457                                 if (i == periods - 1)
 458                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 459                                 else
 460                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 461                         } else
 462                                 flag = 0; /* period continues to the next */
 463                         /*
 464                         dev_dbg(&pci->dev,
 465                                 "tbl %d: at %d  size %d (rest %d)\n",
 466                                 idx, ofs, r, rest);
 467                         */
 468                         pgtbl[(idx<<1) + 1] = cpu_to_le32(r | flag);
 469                         dev->idx_table[idx].offset = ofs;
 470                         dev->idx_table[idx].size = r;
 471                         ofs += r;
 472                         idx++;
 473                 } while (rest > 0);
 474         }
 475         dev->tbl_entries = idx;
 476         dev->bufsize = periods * fragsize;
 477         dev->bufsize2 = dev->bufsize / 2;
 478         dev->fragsize = fragsize;
 479         return 0;
 480 }
 481
 482
 483 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 484                            struct pci_dev *pci)
 485 {
 486         if (dev->table.area) {
 487                 snd_dma_free_pages(&dev->table);
 488                 dev->table.area = NULL;
 489         }
 490         kfree(dev->idx_table);
 491         dev->idx_table = NULL;
 492         return 0;
 493 }
 494
 495 /*
 496  *  Basic I/O
 497  */
 498
 499 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 500 {
 501         return inl(VIAREG(chip, AC97));
 502 }
 503
 504 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 505 {
 506         outl(val, VIAREG(chip, AC97));
 507 }
 508
 509 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 510 {
 511         unsigned int timeout = 1000;    /* 1ms */
 512         unsigned int val;
 513
 514         while (timeout-- > 0) {
 515                 udelay(1);
 516                 val = snd_via82xx_codec_xread(chip);
 517                 if (!(val & VIA_REG_AC97_BUSY))
 518                         return val & 0xffff;
 519         }
 520         dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
 521                    secondary, snd_via82xx_codec_xread(chip));
 522         return -EIO;
 523 }
 524
 525 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 526 {
 527         unsigned int timeout = 1000;    /* 1ms */
 528         unsigned int val, val1;
 529         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 530                                          VIA_REG_AC97_SECONDARY_VALID;
 531
 532         while (timeout-- > 0) {
 533                 val = snd_via82xx_codec_xread(chip);
 534                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 535                 if (val1 == stat)
 536                         return val & 0xffff;
 537                 udelay(1);
 538         }
 539         return -EIO;
 540 }
 541
 542 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 543 {
 544         struct via82xx *chip = ac97->private_data;
 545         __always_unused int err;
 546         err = snd_via82xx_codec_ready(chip, ac97->num);
 547         /* here we need to wait fairly for long time.. */
 548         if (!nodelay)
 549                 msleep(500);
 550 }
 551
 552 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 553                                     unsigned short reg,
 554                                     unsigned short val)
 555 {
 556         struct via82xx *chip = ac97->private_data;
 557         unsigned int xval;
 558
 559         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 560         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 561         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 562         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 563         snd_via82xx_codec_xwrite(chip, xval);
 564         snd_via82xx_codec_ready(chip, ac97->num);
 565 }
 566
 567 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 568 {
 569         struct via82xx *chip = ac97->private_data;
 570         unsigned int xval, val = 0xffff;
 571         int again = 0;
 572
 573         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 574         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 575         xval |= VIA_REG_AC97_READ;
 576         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 577         while (1) {
 578                 if (again++ > 3) {
 579                         dev_err(chip->card->dev,
 580                                 "codec_read: codec %i is not valid [0x%x]\n",
 581                                    ac97->num, snd_via82xx_codec_xread(chip));
 582                         return 0xffff;
 583                 }
 584                 snd_via82xx_codec_xwrite(chip, xval);
 585                 udelay (20);
 586                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 587                         udelay(25);
 588                         val = snd_via82xx_codec_xread(chip);
 589                         break;
 590                 }
 591         }
 592         return val & 0xffff;
 593 }
 594
 595 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 596 {
 597         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 598              VIADEV_REG(viadev, OFFSET_CONTROL));
 599         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 600         udelay(50);
 601         /* disable interrupts */
 602         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 603         /* clear interrupts */
 604         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 605         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 606         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 607         viadev->lastpos = 0;
 608         viadev->hwptr_done = 0;
 609 }
 610
 611
 612 /*
 613  *  Interrupt handler
 614  *  Used for 686 and 8233A
 615  */
 616 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 617 {
 618         struct via82xx *chip = dev_id;
 619         unsigned int status;
 620         unsigned int i;
 621
 622         status = inl(VIAREG(chip, SGD_SHADOW));
 623         if (! (status & chip->intr_mask)) {
 624                 if (chip->rmidi)
 625                         /* check mpu401 interrupt */
 626                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 627                 return IRQ_NONE;
 628         }
 629
 630         /* check status for each stream */
 631         spin_lock(&chip->reg_lock);
 632         for (i = 0; i < chip->num_devs; i++) {
 633                 struct viadev *viadev = &chip->devs[i];
 634                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 635                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 636                         continue;
 637                 if (viadev->substream && viadev->running) {
 638                         /*
 639                          * Update hwptr_done based on 'period elapsed'
 640                          * interrupts. We'll use it, when the chip returns 0
 641                          * for OFFSET_CURR_COUNT.
 642                          */
 643                         if (c_status & VIA_REG_STAT_EOL)
 644                                 viadev->hwptr_done = 0;
 645                         else
 646                                 viadev->hwptr_done += viadev->fragsize;
 647                         viadev->in_interrupt = c_status;
 648                         spin_unlock(&chip->reg_lock);
 649                         snd_pcm_period_elapsed(viadev->substream);
 650                         spin_lock(&chip->reg_lock);
 651                         viadev->in_interrupt = 0;
 652                 }
 653                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 654         }
 655         spin_unlock(&chip->reg_lock);
 656         return IRQ_HANDLED;
 657 }
 658
 659 /*
 660  *  Interrupt handler
 661  */
 662 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 663 {
 664         struct via82xx *chip = dev_id;
 665         unsigned int status;
 666         unsigned int i;
 667         int irqreturn = 0;
 668
 669         /* check status for each stream */
 670         spin_lock(&chip->reg_lock);
 671         status = inl(VIAREG(chip, SGD_SHADOW));
 672
 673         for (i = 0; i < chip->num_devs; i++) {
 674                 struct viadev *viadev = &chip->devs[i];
 675                 struct snd_pcm_substream *substream;
 676                 unsigned char c_status, shadow_status;
 677
 678                 shadow_status = (status >> viadev->shadow_shift) &
 679                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 680                          VIA_REG_STAT_FLAG);
 681                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 682                 if (!c_status)
 683                         continue;
 684
 685                 substream = viadev->substream;
 686                 if (substream && viadev->running) {
 687                         /*
 688                          * Update hwptr_done based on 'period elapsed'
 689                          * interrupts. We'll use it, when the chip returns 0
 690                          * for OFFSET_CURR_COUNT.
 691                          */
 692                         if (c_status & VIA_REG_STAT_EOL)
 693                                 viadev->hwptr_done = 0;
 694                         else
 695                                 viadev->hwptr_done += viadev->fragsize;
 696                         viadev->in_interrupt = c_status;
 697                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 698                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 699                         spin_unlock(&chip->reg_lock);
 700
 701                         snd_pcm_period_elapsed(substream);
 702
 703                         spin_lock(&chip->reg_lock);
 704                         viadev->in_interrupt = 0;
 705                 }
 706                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 707                 irqreturn = 1;
 708         }
 709         spin_unlock(&chip->reg_lock);
 710         return IRQ_RETVAL(irqreturn);
 711 }
 712
 713 /*
 714  *  PCM callbacks
 715  */
 716
 717 /*
 718  * trigger callback
 719  */
 720 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 721 {
 722         struct via82xx *chip = snd_pcm_substream_chip(substream);
 723         struct viadev *viadev = substream->runtime->private_data;
 724         unsigned char val;
 725
 726         if (chip->chip_type != TYPE_VIA686)
 727                 val = VIA_REG_CTRL_INT;
 728         else
 729                 val = 0;
 730         switch (cmd) {
 731         case SNDRV_PCM_TRIGGER_START:
 732         case SNDRV_PCM_TRIGGER_RESUME:
 733                 val |= VIA_REG_CTRL_START;
 734                 viadev->running = 1;
 735                 break;
 736         case SNDRV_PCM_TRIGGER_STOP:
 737         case SNDRV_PCM_TRIGGER_SUSPEND:
 738                 val = VIA_REG_CTRL_TERMINATE;
 739                 viadev->running = 0;
 740                 break;
 741         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 742                 val |= VIA_REG_CTRL_PAUSE;
 743                 viadev->running = 0;
 744                 break;
 745         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 746                 viadev->running = 1;
 747                 break;
 748         default:
 749                 return -EINVAL;
 750         }
 751         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 752         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 753                 snd_via82xx_channel_reset(chip, viadev);
 754         return 0;
 755 }
 756
 757
 758 /*
 759  * pointer callbacks
 760  */
 761
 762 /*
 763  * calculate the linear position at the given sg-buffer index and the rest count
 764  */
 765
 766 #define check_invalid_pos(viadev,pos) \
 767         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 768                                      viadev->lastpos < viadev->bufsize2))
 769
 770 static inline unsigned int calc_linear_pos(struct via82xx *chip,
 771                                            struct viadev *viadev,
 772                                            unsigned int idx,
 773                                            unsigned int count)
 774 {
 775         unsigned int size, base, res;
 776
 777         size = viadev->idx_table[idx].size;
 778         base = viadev->idx_table[idx].offset;
 779         res = base + size - count;
 780         if (res >= viadev->bufsize)
 781                 res -= viadev->bufsize;
 782
 783         /* check the validity of the calculated position */
 784         if (size < count) {
 785                 dev_dbg(chip->card->dev,
 786                         "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 787                            (int)size, (int)count);
 788                 res = viadev->lastpos;
 789         } else {
 790                 if (! count) {
 791                         /* Some mobos report count = 0 on the DMA boundary,
 792                          * i.e. count = size indeed.
 793                          * Let's check whether this step is above the expected size.
 794                          */
 795                         int delta = res - viadev->lastpos;
 796                         if (delta < 0)
 797                                 delta += viadev->bufsize;
 798                         if ((unsigned int)delta > viadev->fragsize)
 799                                 res = base;
 800                 }
 801                 if (check_invalid_pos(viadev, res)) {
 802 #ifdef POINTER_DEBUG
 803                         dev_dbg(chip->card->dev,
 804                                 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
 805                                 idx, viadev->tbl_entries,
 806                                viadev->lastpos, viadev->bufsize2,
 807                                viadev->idx_table[idx].offset,
 808                                viadev->idx_table[idx].size, count);
 809 #endif
 810                         /* count register returns full size when end of buffer is reached */
 811                         res = base + size;
 812                         if (check_invalid_pos(viadev, res)) {
 813                                 dev_dbg(chip->card->dev,
 814                                         "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 815                                 res = viadev->lastpos;
 816                         }
 817                 }
 818         }
 819         return res;
 820 }
 821
 822 /*
 823  * get the current pointer on via686
 824  */
 825 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 826 {
 827         struct via82xx *chip = snd_pcm_substream_chip(substream);
 828         struct viadev *viadev = substream->runtime->private_data;
 829         unsigned int idx, ptr, count, res;
 830
 831         if (snd_BUG_ON(!viadev->tbl_entries))
 832                 return 0;
 833         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 834                 return 0;
 835
 836         spin_lock(&chip->reg_lock);
 837         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 838         /* The via686a does not have the current index register,
 839          * so we need to calculate the index from CURR_PTR.
 840          */
 841         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 842         if (ptr <= (unsigned int)viadev->table.addr)
 843                 idx = 0;
 844         else /* CURR_PTR holds the address + 8 */
 845                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 846         res = calc_linear_pos(chip, viadev, idx, count);
 847         viadev->lastpos = res; /* remember the last position */
 848         spin_unlock(&chip->reg_lock);
 849
 850         return bytes_to_frames(substream->runtime, res);
 851 }
 852
 853 /*
 854  * get the current pointer on via823x
 855  */
 856 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 857 {
 858         struct via82xx *chip = snd_pcm_substream_chip(substream);
 859         struct viadev *viadev = substream->runtime->private_data;
 860         unsigned int idx, count, res;
 861         int status;
 862
 863         if (snd_BUG_ON(!viadev->tbl_entries))
 864                 return 0;
 865
 866         spin_lock(&chip->reg_lock);
 867         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 868         status = viadev->in_interrupt;
 869         if (!status)
 870                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 871
 872         /* An apparent bug in the 8251 is worked around by sending a
 873          * REG_CTRL_START. */
 874         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 875                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 876
 877         if (!(status & VIA_REG_STAT_ACTIVE)) {
 878                 res = 0;
 879                 goto unlock;
 880         }
 881         if (count & 0xffffff) {
 882                 idx = count >> 24;
 883                 if (idx >= viadev->tbl_entries) {
 884 #ifdef POINTER_DEBUG
 885                         dev_dbg(chip->card->dev,
 886                                 "fail: invalid idx = %i/%i\n", idx,
 887                                viadev->tbl_entries);
 888 #endif
 889                         res = viadev->lastpos;
 890                 } else {
 891                         count &= 0xffffff;
 892                         res = calc_linear_pos(chip, viadev, idx, count);
 893                 }
 894         } else {
 895                 res = viadev->hwptr_done;
 896                 if (!viadev->in_interrupt) {
 897                         if (status & VIA_REG_STAT_EOL) {
 898                                 res = 0;
 899                         } else
 900                                 if (status & VIA_REG_STAT_FLAG) {
 901                                         res += viadev->fragsize;
 902                                 }
 903                 }
 904         }
 905 unlock:
 906         viadev->lastpos = res;
 907         spin_unlock(&chip->reg_lock);
 908
 909         return bytes_to_frames(substream->runtime, res);
 910 }
 911
 912
 913 /*
 914  * hw_params callback:
 915  * allocate the buffer and build up the buffer description table
 916  */
 917 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 918                                  struct snd_pcm_hw_params *hw_params)
 919 {
 920         struct via82xx *chip = snd_pcm_substream_chip(substream);
 921         struct viadev *viadev = substream->runtime->private_data;
 922
 923         return build_via_table(viadev, substream, chip->pci,
 924                                params_periods(hw_params),
 925                                params_period_bytes(hw_params));
 926 }
 927
 928 /*
 929  * hw_free callback:
 930  * clean up the buffer description table and release the buffer
 931  */
 932 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 933 {
 934         struct via82xx *chip = snd_pcm_substream_chip(substream);
 935         struct viadev *viadev = substream->runtime->private_data;
 936
 937         clean_via_table(viadev, substream, chip->pci);
 938         return 0;
 939 }
 940
 941
 942 /*
 943  * set up the table pointer
 944  */
 945 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 946 {
 947         snd_via82xx_codec_ready(chip, 0);
 948         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 949         udelay(20);
 950         snd_via82xx_codec_ready(chip, 0);
 951 }
 952
 953 /*
 954  * prepare callback for playback and capture on via686
 955  */
 956 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 957                                 struct snd_pcm_runtime *runtime)
 958 {
 959         snd_via82xx_channel_reset(chip, viadev);
 960         /* this must be set after channel_reset */
 961         snd_via82xx_set_table_ptr(chip, viadev);
 962         outb(VIA_REG_TYPE_AUTOSTART |
 963              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 964              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 965              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 966              VIA_REG_TYPE_INT_EOL |
 967              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 968 }
 969
 970 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 971 {
 972         struct via82xx *chip = snd_pcm_substream_chip(substream);
 973         struct viadev *viadev = substream->runtime->private_data;
 974         struct snd_pcm_runtime *runtime = substream->runtime;
 975
 976         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 977         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 978         via686_setup_format(chip, viadev, runtime);
 979         return 0;
 980 }
 981
 982 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 983 {
 984         struct via82xx *chip = snd_pcm_substream_chip(substream);
 985         struct viadev *viadev = substream->runtime->private_data;
 986         struct snd_pcm_runtime *runtime = substream->runtime;
 987
 988         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 989         via686_setup_format(chip, viadev, runtime);
 990         return 0;
 991 }
 992
 993 /*
 994  * lock the current rate
 995  */
 996 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 997 {
 998         int changed = 0;
 999
1000         spin_lock_irq(&rec->lock);
1001         if (rec->rate != rate) {
1002                 if (rec->rate && rec->used > 1) /* already set */
1003                         changed = -EINVAL;
1004                 else {
1005                         rec->rate = rate;
1006                         changed = 1;
1007                 }
1008         }
1009         spin_unlock_irq(&rec->lock);
1010         return changed;
1011 }
1012
1013 /*
1014  * prepare callback for DSX playback on via823x
1015  */
1016 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1017 {
1018         struct via82xx *chip = snd_pcm_substream_chip(substream);
1019         struct viadev *viadev = substream->runtime->private_data;
1020         struct snd_pcm_runtime *runtime = substream->runtime;
1021         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1022         int rate_changed;
1023         u32 rbits;
1024
1025         rate_changed = via_lock_rate(&chip->rates[0], ac97_rate);
1026         if (rate_changed < 0)
1027                 return rate_changed;
1028         if (rate_changed)
1029                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1030                                   chip->no_vra ? 48000 : runtime->rate);
1031         if (chip->spdif_on && viadev->reg_offset == 0x30)
1032                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1033
1034         if (runtime->rate == 48000)
1035                 rbits = 0xfffff;
1036         else
1037                 rbits = (0x100000 / 48000) * runtime->rate +
1038                         ((0x100000 % 48000) * runtime->rate) / 48000;
1039         snd_BUG_ON(rbits & ~0xfffff);
1040         snd_via82xx_channel_reset(chip, viadev);
1041         snd_via82xx_set_table_ptr(chip, viadev);
1042         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1043              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1044         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1045              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1046         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1047              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1048              rbits | /* rate */
1049              0xff000000,    /* STOP index is never reached */
1050              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1051         udelay(20);
1052         snd_via82xx_codec_ready(chip, 0);
1053         return 0;
1054 }
1055
1056 /*
1057  * prepare callback for multi-channel playback on via823x
1058  */
1059 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1060 {
1061         struct via82xx *chip = snd_pcm_substream_chip(substream);
1062         struct viadev *viadev = substream->runtime->private_data;
1063         struct snd_pcm_runtime *runtime = substream->runtime;
1064         unsigned int slots;
1065         int fmt;
1066
1067         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1068                 return -EINVAL;
1069         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1070         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1071         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1072         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1073         snd_via82xx_channel_reset(chip, viadev);
1074         snd_via82xx_set_table_ptr(chip, viadev);
1075
1076         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1077                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1078         fmt |= runtime->channels << 4;
1079         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1080 #if 0
1081         if (chip->revision == VIA_REV_8233A)
1082                 slots = 0;
1083         else
1084 #endif
1085         {
1086                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1087                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1088                 switch (runtime->channels) {
1089                 case 1: slots = (1<<0) | (1<<4); break;
1090                 case 2: slots = (1<<0) | (2<<4); break;
1091                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1092                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1093                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1094                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1095                 default: slots = 0; break;
1096                 }
1097         }
1098         /* STOP index is never reached */
1099         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1100         udelay(20);
1101         snd_via82xx_codec_ready(chip, 0);
1102         return 0;
1103 }
1104
1105 /*
1106  * prepare callback for capture on via823x
1107  */
1108 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1109 {
1110         struct via82xx *chip = snd_pcm_substream_chip(substream);
1111         struct viadev *viadev = substream->runtime->private_data;
1112         struct snd_pcm_runtime *runtime = substream->runtime;
1113
1114         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1115                 return -EINVAL;
1116         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1117         snd_via82xx_channel_reset(chip, viadev);
1118         snd_via82xx_set_table_ptr(chip, viadev);
1119         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1120         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1121              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1122              0xff000000,    /* STOP index is never reached */
1123              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1124         udelay(20);
1125         snd_via82xx_codec_ready(chip, 0);
1126         return 0;
1127 }
1128
1129
1130 /*
1131  * pcm hardware definition, identical for both playback and capture
1132  */
1133 static const struct snd_pcm_hardware snd_via82xx_hw =
1134 {
1135         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1136                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1137                                  SNDRV_PCM_INFO_MMAP_VALID |
1138                                  /* SNDRV_PCM_INFO_RESUME | */
1139                                  SNDRV_PCM_INFO_PAUSE),
1140         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1141         .rates =                SNDRV_PCM_RATE_48000,
1142         .rate_min =             48000,
1143         .rate_max =             48000,
1144         .channels_min =         1,
1145         .channels_max =         2,
1146         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1147         .period_bytes_min =     32,
1148         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1149         .periods_min =          2,
1150         .periods_max =          VIA_TABLE_SIZE / 2,
1151         .fifo_size =            0,
1152 };
1153
1154
1155 /*
1156  * open callback skeleton
1157  */
1158 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1159                                 struct snd_pcm_substream *substream)
1160 {
1161         struct snd_pcm_runtime *runtime = substream->runtime;
1162         int err;
1163         struct via_rate_lock *ratep;
1164         bool use_src = false;
1165
1166         runtime->hw = snd_via82xx_hw;
1167
1168         /* set the hw rate condition */
1169         ratep = &chip->rates[viadev->direction];
1170         spin_lock_irq(&ratep->lock);
1171         ratep->used++;
1172         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1173                 /* DXS#3 and spdif is on */
1174                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1175                 snd_pcm_limit_hw_rates(runtime);
1176         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1177                 /* fixed DXS playback rate */
1178                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1179                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1180         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1181                 /* use full SRC capabilities of DXS */
1182                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1183                                      SNDRV_PCM_RATE_8000_48000);
1184                 runtime->hw.rate_min = 8000;
1185                 runtime->hw.rate_max = 48000;
1186                 use_src = true;
1187         } else if (! ratep->rate) {
1188                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1189                 runtime->hw.rates = chip->ac97->rates[idx];
1190                 snd_pcm_limit_hw_rates(runtime);
1191         } else {
1192                 /* a fixed rate */
1193                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1194                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1195         }
1196         spin_unlock_irq(&ratep->lock);
1197
1198         /* we may remove following constaint when we modify table entries
1199            in interrupt */
1200         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
1201         if (err < 0)
1202                 return err;
1203
1204         if (use_src) {
1205                 err = snd_pcm_hw_rule_noresample(runtime, 48000);
1206                 if (err < 0)
1207                         return err;
1208         }
1209
1210         runtime->private_data = viadev;
1211         viadev->substream = substream;
1212
1213         return 0;
1214 }
1215
1216
1217 /*
1218  * open callback for playback on via686
1219  */
1220 static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1221 {
1222         struct via82xx *chip = snd_pcm_substream_chip(substream);
1223         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1224         int err;
1225
1226         err = snd_via82xx_pcm_open(chip, viadev, substream);
1227         if (err < 0)
1228                 return err;
1229         return 0;
1230 }
1231
1232 /*
1233  * open callback for playback on via823x DXS
1234  */
1235 static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1236 {
1237         struct via82xx *chip = snd_pcm_substream_chip(substream);
1238         struct viadev *viadev;
1239         unsigned int stream;
1240         int err;
1241
1242         viadev = &chip->devs[chip->playback_devno + substream->number];
1243         err = snd_via82xx_pcm_open(chip, viadev, substream);
1244         if (err < 0)
1245                 return err;
1246         stream = viadev->reg_offset / 0x10;
1247         if (chip->dxs_controls[stream]) {
1248                 chip->playback_volume[stream][0] =
1249                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1250                 chip->playback_volume[stream][1] =
1251                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1252                 chip->dxs_controls[stream]->vd[0].access &=
1253                         ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1254                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1255                                SNDRV_CTL_EVENT_MASK_INFO,
1256                                &chip->dxs_controls[stream]->id);
1257         }
1258         return 0;
1259 }
1260
1261 /*
1262  * open callback for playback on via823x multi-channel
1263  */
1264 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1265 {
1266         struct via82xx *chip = snd_pcm_substream_chip(substream);
1267         struct viadev *viadev = &chip->devs[chip->multi_devno];
1268         int err;
1269         /* channels constraint for VIA8233A
1270          * 3 and 5 channels are not supported
1271          */
1272         static const unsigned int channels[] = {
1273                 1, 2, 4, 6
1274         };
1275         static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1276                 .count = ARRAY_SIZE(channels),
1277                 .list = channels,
1278                 .mask = 0,
1279         };
1280
1281         err = snd_via82xx_pcm_open(chip, viadev, substream);
1282         if (err < 0)
1283                 return err;
1284         substream->runtime->hw.channels_max = 6;
1285         if (chip->revision == VIA_REV_8233A)
1286                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1287                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1288                                            &hw_constraints_channels);
1289         return 0;
1290 }
1291
1292 /*
1293  * open callback for capture on via686 and via823x
1294  */
1295 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1296 {
1297         struct via82xx *chip = snd_pcm_substream_chip(substream);
1298         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1299
1300         return snd_via82xx_pcm_open(chip, viadev, substream);
1301 }
1302
1303 /*
1304  * close callback
1305  */
1306 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1307 {
1308         struct via82xx *chip = snd_pcm_substream_chip(substream);
1309         struct viadev *viadev = substream->runtime->private_data;
1310         struct via_rate_lock *ratep;
1311
1312         /* release the rate lock */
1313         ratep = &chip->rates[viadev->direction];
1314         spin_lock_irq(&ratep->lock);
1315         ratep->used--;
1316         if (! ratep->used)
1317                 ratep->rate = 0;
1318         spin_unlock_irq(&ratep->lock);
1319         if (! ratep->rate) {
1320                 if (! viadev->direction) {
1321                         snd_ac97_update_power(chip->ac97,
1322                                               AC97_PCM_FRONT_DAC_RATE, 0);
1323                         snd_ac97_update_power(chip->ac97,
1324                                               AC97_PCM_SURR_DAC_RATE, 0);
1325                         snd_ac97_update_power(chip->ac97,
1326                                               AC97_PCM_LFE_DAC_RATE, 0);
1327                 } else
1328                         snd_ac97_update_power(chip->ac97,
1329                                               AC97_PCM_LR_ADC_RATE, 0);
1330         }
1331         viadev->substream = NULL;
1332         return 0;
1333 }
1334
1335 static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1336 {
1337         struct via82xx *chip = snd_pcm_substream_chip(substream);
1338         struct viadev *viadev = substream->runtime->private_data;
1339         unsigned int stream;
1340
1341         stream = viadev->reg_offset / 0x10;
1342         if (chip->dxs_controls[stream]) {
1343                 chip->dxs_controls[stream]->vd[0].access |=
1344                         SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1345                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1346                                &chip->dxs_controls[stream]->id);
1347         }
1348         return snd_via82xx_pcm_close(substream);
1349 }
1350
1351
1352 /* via686 playback callbacks */
1353 static const struct snd_pcm_ops snd_via686_playback_ops = {
1354         .open =         snd_via686_playback_open,
1355         .close =        snd_via82xx_pcm_close,
1356         .hw_params =    snd_via82xx_hw_params,
1357         .hw_free =      snd_via82xx_hw_free,
1358         .prepare =      snd_via686_playback_prepare,
1359         .trigger =      snd_via82xx_pcm_trigger,
1360         .pointer =      snd_via686_pcm_pointer,
1361 };
1362
1363 /* via686 capture callbacks */
1364 static const struct snd_pcm_ops snd_via686_capture_ops = {
1365         .open =         snd_via82xx_capture_open,
1366         .close =        snd_via82xx_pcm_close,
1367         .hw_params =    snd_via82xx_hw_params,
1368         .hw_free =      snd_via82xx_hw_free,
1369         .prepare =      snd_via686_capture_prepare,
1370         .trigger =      snd_via82xx_pcm_trigger,
1371         .pointer =      snd_via686_pcm_pointer,
1372 };
1373
1374 /* via823x DSX playback callbacks */
1375 static const struct snd_pcm_ops snd_via8233_playback_ops = {
1376         .open =         snd_via8233_playback_open,
1377         .close =        snd_via8233_playback_close,
1378         .hw_params =    snd_via82xx_hw_params,
1379         .hw_free =      snd_via82xx_hw_free,
1380         .prepare =      snd_via8233_playback_prepare,
1381         .trigger =      snd_via82xx_pcm_trigger,
1382         .pointer =      snd_via8233_pcm_pointer,
1383 };
1384
1385 /* via823x multi-channel playback callbacks */
1386 static const struct snd_pcm_ops snd_via8233_multi_ops = {
1387         .open =         snd_via8233_multi_open,
1388         .close =        snd_via82xx_pcm_close,
1389         .hw_params =    snd_via82xx_hw_params,
1390         .hw_free =      snd_via82xx_hw_free,
1391         .prepare =      snd_via8233_multi_prepare,
1392         .trigger =      snd_via82xx_pcm_trigger,
1393         .pointer =      snd_via8233_pcm_pointer,
1394 };
1395
1396 /* via823x capture callbacks */
1397 static const struct snd_pcm_ops snd_via8233_capture_ops = {
1398         .open =         snd_via82xx_capture_open,
1399         .close =        snd_via82xx_pcm_close,
1400         .hw_params =    snd_via82xx_hw_params,
1401         .hw_free =      snd_via82xx_hw_free,
1402         .prepare =      snd_via8233_capture_prepare,
1403         .trigger =      snd_via82xx_pcm_trigger,
1404         .pointer =      snd_via8233_pcm_pointer,
1405 };
1406
1407
1408 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1409                         int shadow_pos, int direction)
1410 {
1411         chip->devs[idx].reg_offset = reg_offset;
1412         chip->devs[idx].shadow_shift = shadow_pos * 4;
1413         chip->devs[idx].direction = direction;
1414         chip->devs[idx].port = chip->port + reg_offset;
1415 }
1416
1417 /*
1418  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1419  */
1420 static int snd_via8233_pcm_new(struct via82xx *chip)
1421 {
1422         struct snd_pcm *pcm;
1423         struct snd_pcm_chmap *chmap;
1424         int i, err;
1425
1426         chip->playback_devno = 0;       /* x 4 */
1427         chip->multi_devno = 4;          /* x 1 */
1428         chip->capture_devno = 5;        /* x 2 */
1429         chip->num_devs = 7;
1430         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1431
1432         /* PCM #0:  4 DSX playbacks and 1 capture */
1433         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1434         if (err < 0)
1435                 return err;
1436         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1437         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1438         pcm->private_data = chip;
1439         strcpy(pcm->name, chip->card->shortname);
1440         chip->pcms[0] = pcm;
1441         /* set up playbacks */
1442         for (i = 0; i < 4; i++)
1443                 init_viadev(chip, i, 0x10 * i, i, 0);
1444         /* capture */
1445         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1446
1447         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1448                                        &chip->pci->dev,
1449                                        64*1024, VIA_MAX_BUFSIZE);
1450
1451         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1452                                      snd_pcm_std_chmaps, 2, 0,
1453                                      &chmap);
1454         if (err < 0)
1455                 return err;
1456
1457         /* PCM #1:  multi-channel playback and 2nd capture */
1458         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1459         if (err < 0)
1460                 return err;
1461         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1462         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1463         pcm->private_data = chip;
1464         strcpy(pcm->name, chip->card->shortname);
1465         chip->pcms[1] = pcm;
1466         /* set up playback */
1467         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1468         /* set up capture */
1469         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1470
1471         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1472                                        &chip->pci->dev,
1473                                        64*1024, VIA_MAX_BUFSIZE);
1474
1475         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1476                                      snd_pcm_alt_chmaps, 6, 0,
1477                                      &chmap);
1478         if (err < 0)
1479                 return err;
1480         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1481
1482         return 0;
1483 }
1484
1485 /*
1486  * create pcm instances for VIA8233A
1487  */
1488 static int snd_via8233a_pcm_new(struct via82xx *chip)
1489 {
1490         struct snd_pcm *pcm;
1491         struct snd_pcm_chmap *chmap;
1492         int err;
1493
1494         chip->multi_devno = 0;
1495         chip->playback_devno = 1;
1496         chip->capture_devno = 2;
1497         chip->num_devs = 3;
1498         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1499
1500         /* PCM #0:  multi-channel playback and capture */
1501         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1502         if (err < 0)
1503                 return err;
1504         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1505         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1506         pcm->private_data = chip;
1507         strcpy(pcm->name, chip->card->shortname);
1508         chip->pcms[0] = pcm;
1509         /* set up playback */
1510         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1511         /* capture */
1512         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1513
1514         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1515                                        &chip->pci->dev,
1516                                        64*1024, VIA_MAX_BUFSIZE);
1517
1518         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1519                                      snd_pcm_alt_chmaps, 6, 0,
1520                                      &chmap);
1521         if (err < 0)
1522                 return err;
1523         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1524
1525         /* SPDIF supported? */
1526         if (! ac97_can_spdif(chip->ac97))
1527                 return 0;
1528
1529         /* PCM #1:  DXS3 playback (for spdif) */
1530         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1531         if (err < 0)
1532                 return err;
1533         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1534         pcm->private_data = chip;
1535         strcpy(pcm->name, chip->card->shortname);
1536         chip->pcms[1] = pcm;
1537         /* set up playback */
1538         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1539
1540         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1541                                        &chip->pci->dev,
1542                                        64*1024, VIA_MAX_BUFSIZE);
1543         return 0;
1544 }
1545
1546 /*
1547  * create a pcm instance for via686a/b
1548  */
1549 static int snd_via686_pcm_new(struct via82xx *chip)
1550 {
1551         struct snd_pcm *pcm;
1552         int err;
1553
1554         chip->playback_devno = 0;
1555         chip->capture_devno = 1;
1556         chip->num_devs = 2;
1557         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1558
1559         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1560         if (err < 0)
1561                 return err;
1562         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1563         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1564         pcm->private_data = chip;
1565         strcpy(pcm->name, chip->card->shortname);
1566         chip->pcms[0] = pcm;
1567         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1568         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1569
1570         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1571                                        &chip->pci->dev,
1572                                        64*1024, VIA_MAX_BUFSIZE);
1573         return 0;
1574 }
1575
1576
1577 /*
1578  *  Mixer part
1579  */
1580
1581 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1582                                            struct snd_ctl_elem_info *uinfo)
1583 {
1584         /* formerly they were "Line" and "Mic", but it looks like that they
1585          * have nothing to do with the actual physical connections...
1586          */
1587         static const char * const texts[2] = {
1588                 "Input1", "Input2"
1589         };
1590         return snd_ctl_enum_info(uinfo, 1, 2, texts);
1591 }
1592
1593 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1594                                           struct snd_ctl_elem_value *ucontrol)
1595 {
1596         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1597         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1598         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1599         return 0;
1600 }
1601
1602 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1603                                           struct snd_ctl_elem_value *ucontrol)
1604 {
1605         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1606         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1607         u8 val, oval;
1608
1609         spin_lock_irq(&chip->reg_lock);
1610         oval = inb(port);
1611         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1612         if (ucontrol->value.enumerated.item[0])
1613                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1614         if (val != oval)
1615                 outb(val, port);
1616         spin_unlock_irq(&chip->reg_lock);
1617         return val != oval;
1618 }
1619
1620 static struct snd_kcontrol_new snd_via8233_capture_source = {
1621         .name = "Input Source Select",
1622         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1623         .info = snd_via8233_capture_source_info,
1624         .get = snd_via8233_capture_source_get,
1625         .put = snd_via8233_capture_source_put,
1626 };
1627
1628 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1629
1630 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1631                                       struct snd_ctl_elem_value *ucontrol)
1632 {
1633         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1634         u8 val;
1635
1636         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1637         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1638         return 0;
1639 }
1640
1641 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1642                                       struct snd_ctl_elem_value *ucontrol)
1643 {
1644         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1645         u8 val, oval;
1646
1647         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1648         val = oval & ~VIA8233_SPDIF_DX3;
1649         if (ucontrol->value.integer.value[0])
1650                 val |= VIA8233_SPDIF_DX3;
1651         /* save the spdif flag for rate filtering */
1652         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1653         if (val != oval) {
1654                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1655                 return 1;
1656         }
1657         return 0;
1658 }
1659
1660 static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = {
1661         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1662         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1663         .info = snd_via8233_dxs3_spdif_info,
1664         .get = snd_via8233_dxs3_spdif_get,
1665         .put = snd_via8233_dxs3_spdif_put,
1666 };
1667
1668 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1669                                        struct snd_ctl_elem_info *uinfo)
1670 {
1671         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1672         uinfo->count = 2;
1673         uinfo->value.integer.min = 0;
1674         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1675         return 0;
1676 }
1677
1678 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1679                                       struct snd_ctl_elem_value *ucontrol)
1680 {
1681         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1682         unsigned int idx = kcontrol->id.subdevice;
1683
1684         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1685         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1686         return 0;
1687 }
1688
1689 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1690                                          struct snd_ctl_elem_value *ucontrol)
1691 {
1692         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1693         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1694         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1695         return 0;
1696 }
1697
1698 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1699                                       struct snd_ctl_elem_value *ucontrol)
1700 {
1701         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1702         unsigned int idx = kcontrol->id.subdevice;
1703         unsigned long port = chip->port + 0x10 * idx;
1704         unsigned char val;
1705         int i, change = 0;
1706
1707         for (i = 0; i < 2; i++) {
1708                 val = ucontrol->value.integer.value[i];
1709                 if (val > VIA_DXS_MAX_VOLUME)
1710                         val = VIA_DXS_MAX_VOLUME;
1711                 val = VIA_DXS_MAX_VOLUME - val;
1712                 change |= val != chip->playback_volume[idx][i];
1713                 if (change) {
1714                         chip->playback_volume[idx][i] = val;
1715                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1716                 }
1717         }
1718         return change;
1719 }
1720
1721 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1722                                          struct snd_ctl_elem_value *ucontrol)
1723 {
1724         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1725         unsigned int idx;
1726         unsigned char val;
1727         int i, change = 0;
1728
1729         for (i = 0; i < 2; i++) {
1730                 val = ucontrol->value.integer.value[i];
1731                 if (val > VIA_DXS_MAX_VOLUME)
1732                         val = VIA_DXS_MAX_VOLUME;
1733                 val = VIA_DXS_MAX_VOLUME - val;
1734                 if (val != chip->playback_volume_c[i]) {
1735                         change = 1;
1736                         chip->playback_volume_c[i] = val;
1737                         for (idx = 0; idx < 4; idx++) {
1738                                 unsigned long port = chip->port + 0x10 * idx;
1739                                 chip->playback_volume[idx][i] = val;
1740                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1741                         }
1742                 }
1743         }
1744         return change;
1745 }
1746
1747 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1748
1749 static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = {
1750         .name = "PCM Playback Volume",
1751         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1752         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1753                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1754         .info = snd_via8233_dxs_volume_info,
1755         .get = snd_via8233_pcmdxs_volume_get,
1756         .put = snd_via8233_pcmdxs_volume_put,
1757         .tlv = { .p = db_scale_dxs }
1758 };
1759
1760 static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = {
1761         .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1762         .device = 0,
1763         /* .subdevice set later */
1764         .name = "PCM Playback Volume",
1765         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1766                   SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1767                   SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1768         .info = snd_via8233_dxs_volume_info,
1769         .get = snd_via8233_dxs_volume_get,
1770         .put = snd_via8233_dxs_volume_put,
1771         .tlv = { .p = db_scale_dxs }
1772 };
1773
1774 /*
1775  */
1776
1777 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1778 {
1779         struct via82xx *chip = bus->private_data;
1780         chip->ac97_bus = NULL;
1781 }
1782
1783 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1784 {
1785         struct via82xx *chip = ac97->private_data;
1786         chip->ac97 = NULL;
1787 }
1788
1789 static const struct ac97_quirk ac97_quirks[] = {
1790         {
1791                 .subvendor = 0x1106,
1792                 .subdevice = 0x4161,
1793                 .codec_id = 0x56494161, /* VT1612A */
1794                 .name = "Soltek SL-75DRV5",
1795                 .type = AC97_TUNE_NONE
1796         },
1797         {       /* FIXME: which codec? */
1798                 .subvendor = 0x1106,
1799                 .subdevice = 0x4161,
1800                 .name = "ASRock K7VT2",
1801                 .type = AC97_TUNE_HP_ONLY
1802         },
1803         {
1804                 .subvendor = 0x110a,
1805                 .subdevice = 0x0079,
1806                 .name = "Fujitsu Siemens D1289",
1807                 .type = AC97_TUNE_HP_ONLY
1808         },
1809         {
1810                 .subvendor = 0x1019,
1811                 .subdevice = 0x0a81,
1812                 .name = "ECS K7VTA3",
1813                 .type = AC97_TUNE_HP_ONLY
1814         },
1815         {
1816                 .subvendor = 0x1019,
1817                 .subdevice = 0x0a85,
1818                 .name = "ECS L7VMM2",
1819                 .type = AC97_TUNE_HP_ONLY
1820         },
1821         {
1822                 .subvendor = 0x1019,
1823                 .subdevice = 0x1841,
1824                 .name = "ECS K7VTA3",
1825                 .type = AC97_TUNE_HP_ONLY
1826         },
1827         {
1828                 .subvendor = 0x1849,
1829                 .subdevice = 0x3059,
1830                 .name = "ASRock K7VM2",
1831                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1832         },
1833         {
1834                 .subvendor = 0x14cd,
1835                 .subdevice = 0x7002,
1836                 .name = "Unknown",
1837                 .type = AC97_TUNE_ALC_JACK
1838         },
1839         {
1840                 .subvendor = 0x1071,
1841                 .subdevice = 0x8590,
1842                 .name = "Mitac Mobo",
1843                 .type = AC97_TUNE_ALC_JACK
1844         },
1845         {
1846                 .subvendor = 0x161f,
1847                 .subdevice = 0x202b,
1848                 .name = "Arima Notebook",
1849                 .type = AC97_TUNE_HP_ONLY,
1850         },
1851         {
1852                 .subvendor = 0x161f,
1853                 .subdevice = 0x2032,
1854                 .name = "Targa Traveller 811",
1855                 .type = AC97_TUNE_HP_ONLY,
1856         },
1857         {
1858                 .subvendor = 0x161f,
1859                 .subdevice = 0x2032,
1860                 .name = "m680x",
1861                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1862         },
1863         {
1864                 .subvendor = 0x1297,
1865                 .subdevice = 0xa232,
1866                 .name = "Shuttle AK32VN",
1867                 .type = AC97_TUNE_HP_ONLY
1868         },
1869         { } /* terminator */
1870 };
1871
1872 static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1873 {
1874         struct snd_ac97_template ac97;
1875         int err;
1876         static const struct snd_ac97_bus_ops ops = {
1877                 .write = snd_via82xx_codec_write,
1878                 .read = snd_via82xx_codec_read,
1879                 .wait = snd_via82xx_codec_wait,
1880         };
1881
1882         err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
1883         if (err < 0)
1884                 return err;
1885         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1886         chip->ac97_bus->clock = chip->ac97_clock;
1887
1888         memset(&ac97, 0, sizeof(ac97));
1889         ac97.private_data = chip;
1890         ac97.private_free = snd_via82xx_mixer_free_ac97;
1891         ac97.pci = chip->pci;
1892         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1893         err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
1894         if (err < 0)
1895                 return err;
1896
1897         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1898
1899         if (chip->chip_type != TYPE_VIA686) {
1900                 /* use slot 10/11 */
1901                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1902         }
1903
1904         return 0;
1905 }
1906
1907 #ifdef SUPPORT_JOYSTICK
1908 #define JOYSTICK_ADDR   0x200
1909 static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1910 {
1911         struct gameport *gp;
1912
1913         if (!joystick)
1914                 return -ENODEV;
1915
1916         if (!devm_request_region(chip->card->dev, JOYSTICK_ADDR, 8,
1917                                  "VIA686 gameport")) {
1918                 dev_warn(chip->card->dev, "cannot reserve joystick port %#x\n",
1919                        JOYSTICK_ADDR);
1920                 return -EBUSY;
1921         }
1922
1923         chip->gameport = gp = gameport_allocate_port();
1924         if (!gp) {
1925                 dev_err(chip->card->dev,
1926                         "cannot allocate memory for gameport\n");
1927                 return -ENOMEM;
1928         }
1929
1930         gameport_set_name(gp, "VIA686 Gameport");
1931         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1932         gameport_set_dev_parent(gp, &chip->pci->dev);
1933         gp->io = JOYSTICK_ADDR;
1934
1935         /* Enable legacy joystick port */
1936         *legacy |= VIA_FUNC_ENABLE_GAME;
1937         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1938
1939         gameport_register_port(chip->gameport);
1940
1941         return 0;
1942 }
1943
1944 static void snd_via686_free_gameport(struct via82xx *chip)
1945 {
1946         if (chip->gameport) {
1947                 gameport_unregister_port(chip->gameport);
1948                 chip->gameport = NULL;
1949         }
1950 }
1951 #else
1952 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1953 {
1954         return -ENOSYS;
1955 }
1956 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1957 #endif
1958
1959
1960 /*
1961  *
1962  */
1963
1964 static int snd_via8233_init_misc(struct via82xx *chip)
1965 {
1966         int i, err, caps;
1967         unsigned char val;
1968
1969         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1970         for (i = 0; i < caps; i++) {
1971                 snd_via8233_capture_source.index = i;
1972                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1973                 if (err < 0)
1974                         return err;
1975         }
1976         if (ac97_can_spdif(chip->ac97)) {
1977                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1978                 if (err < 0)
1979                         return err;
1980         }
1981         if (chip->chip_type != TYPE_VIA8233A) {
1982                 /* when no h/w PCM volume control is found, use DXS volume control
1983                  * as the PCM vol control
1984                  */
1985                 if (!snd_ctl_find_id_mixer(chip->card, "PCM Playback Volume")) {
1986                         dev_info(chip->card->dev,
1987                                  "Using DXS as PCM Playback\n");
1988                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1989                         if (err < 0)
1990                                 return err;
1991                 }
1992                 else /* Using DXS when PCM emulation is enabled is really weird */
1993                 {
1994                         for (i = 0; i < 4; ++i) {
1995                                 struct snd_kcontrol *kctl;
1996
1997                                 kctl = snd_ctl_new1(
1998                                         &snd_via8233_dxs_volume_control, chip);
1999                                 if (!kctl)
2000                                         return -ENOMEM;
2001                                 kctl->id.subdevice = i;
2002                                 err = snd_ctl_add(chip->card, kctl);
2003                                 if (err < 0)
2004                                         return err;
2005                                 chip->dxs_controls[i] = kctl;
2006                         }
2007                 }
2008         }
2009         /* select spdif data slot 10/11 */
2010         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2011         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2012         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2013         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2014
2015         return 0;
2016 }
2017
2018 static int snd_via686_init_misc(struct via82xx *chip)
2019 {
2020         unsigned char legacy, legacy_cfg;
2021         int rev_h = 0;
2022
2023         legacy = chip->old_legacy;
2024         legacy_cfg = chip->old_legacy_cfg;
2025         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2026         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2027         if (chip->revision >= VIA_REV_686_H) {
2028                 rev_h = 1;
2029                 if (mpu_port >= 0x200) {        /* force MIDI */
2030                         mpu_port &= 0xfffc;
2031                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2032                         chip->mpu_port_saved = mpu_port;
2033                 } else {
2034                         mpu_port = pci_resource_start(chip->pci, 2);
2035                 }
2036         } else {
2037                 switch (mpu_port) {     /* force MIDI */
2038                 case 0x300:
2039                 case 0x310:
2040                 case 0x320:
2041                 case 0x330:
2042                         legacy_cfg &= ~(3 << 2);
2043                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
2044                         break;
2045                 default:                        /* no, use BIOS settings */
2046                         if (legacy & VIA_FUNC_ENABLE_MIDI)
2047                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2048                         break;
2049                 }
2050         }
2051         if (mpu_port >= 0x200)
2052                 chip->mpu_res = devm_request_region(&chip->pci->dev, mpu_port,
2053                                                     2, "VIA82xx MPU401");
2054         if (chip->mpu_res) {
2055                 if (rev_h)
2056                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2057                 legacy |= VIA_FUNC_ENABLE_MIDI;
2058         } else {
2059                 if (rev_h)
2060                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2061                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
2062                 mpu_port = 0;
2063         }
2064
2065         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2066         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2067         if (chip->mpu_res) {
2068                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2069                                         mpu_port, MPU401_INFO_INTEGRATED |
2070                                         MPU401_INFO_IRQ_HOOK, -1,
2071                                         &chip->rmidi) < 0) {
2072                         dev_warn(chip->card->dev,
2073                                  "unable to initialize MPU-401 at 0x%lx, skipping\n",
2074                                  mpu_port);
2075                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2076                 } else {
2077                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2078                 }
2079                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2080         }
2081
2082         snd_via686_create_gameport(chip, &legacy);
2083
2084         chip->legacy_saved = legacy;
2085         chip->legacy_cfg_saved = legacy_cfg;
2086
2087         return 0;
2088 }
2089
2090
2091 /*
2092  * proc interface
2093  */
2094 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2095                                   struct snd_info_buffer *buffer)
2096 {
2097         struct via82xx *chip = entry->private_data;
2098         int i;
2099
2100         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2101         for (i = 0; i < 0xa0; i += 4) {
2102                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2103         }
2104 }
2105
2106 static void snd_via82xx_proc_init(struct via82xx *chip)
2107 {
2108         snd_card_ro_proc_new(chip->card, "via82xx", chip,
2109                              snd_via82xx_proc_read);
2110 }
2111
2112 /*
2113  *
2114  */
2115
2116 static int snd_via82xx_chip_init(struct via82xx *chip)
2117 {
2118         unsigned int val;
2119         unsigned long end_time;
2120         unsigned char pval;
2121
2122 #if 0 /* broken on K7M? */
2123         if (chip->chip_type == TYPE_VIA686)
2124                 /* disable all legacy ports */
2125                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2126 #endif
2127         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2128         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2129                 /* deassert ACLink reset, force SYNC */
2130                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2131                                       VIA_ACLINK_CTRL_ENABLE |
2132                                       VIA_ACLINK_CTRL_RESET |
2133                                       VIA_ACLINK_CTRL_SYNC);
2134                 udelay(100);
2135 #if 1 /* FIXME: should we do full reset here for all chip models? */
2136                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2137                 udelay(100);
2138 #else
2139                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2140                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2141                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2142                 udelay(2);
2143 #endif
2144                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2145                 /* note - FM data out has trouble with non VRA codecs !! */
2146                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2147                 udelay(100);
2148         }
2149
2150         /* Make sure VRA is enabled, in case we didn't do a
2151          * complete codec reset, above */
2152         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2153         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2154                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2155                 /* note - FM data out has trouble with non VRA codecs !! */
2156                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2157                 udelay(100);
2158         }
2159
2160         /* wait until codec ready */
2161         end_time = jiffies + msecs_to_jiffies(750);
2162         do {
2163                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2164                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2165                         break;
2166                 schedule_timeout_uninterruptible(1);
2167         } while (time_before(jiffies, end_time));
2168
2169         val = snd_via82xx_codec_xread(chip);
2170         if (val & VIA_REG_AC97_BUSY)
2171                 dev_err(chip->card->dev,
2172                         "AC'97 codec is not ready [0x%x]\n", val);
2173
2174 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2175         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2176                                  VIA_REG_AC97_SECONDARY_VALID |
2177                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2178         end_time = jiffies + msecs_to_jiffies(750);
2179         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2180                                  VIA_REG_AC97_SECONDARY_VALID |
2181                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2182         do {
2183                 val = snd_via82xx_codec_xread(chip);
2184                 if (val & VIA_REG_AC97_SECONDARY_VALID) {
2185                         chip->ac97_secondary = 1;
2186                         goto __ac97_ok2;
2187                 }
2188                 schedule_timeout_uninterruptible(1);
2189         } while (time_before(jiffies, end_time));
2190         /* This is ok, the most of motherboards have only one codec */
2191
2192       __ac97_ok2:
2193 #endif
2194
2195         if (chip->chip_type == TYPE_VIA686) {
2196                 /* route FM trap to IRQ, disable FM trap */
2197                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2198                 /* disable all GPI interrupts */
2199                 outl(0, VIAREG(chip, GPI_INTR));
2200         }
2201
2202         if (chip->chip_type != TYPE_VIA686) {
2203                 /* Workaround for Award BIOS bug:
2204                  * DXS channels don't work properly with VRA if MC97 is disabled.
2205                  */
2206                 struct pci_dev *pci;
2207                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2208                 if (pci) {
2209                         unsigned char data;
2210                         pci_read_config_byte(pci, 0x44, &data);
2211                         pci_write_config_byte(pci, 0x44, data | 0x40);
2212                         pci_dev_put(pci);
2213                 }
2214         }
2215
2216         if (chip->chip_type != TYPE_VIA8233A) {
2217                 int i, idx;
2218                 for (idx = 0; idx < 4; idx++) {
2219                         unsigned long port = chip->port + 0x10 * idx;
2220                         for (i = 0; i < 2; i++) {
2221                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2222                                 outb(chip->playback_volume_c[i],
2223                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2224                         }
2225                 }
2226         }
2227
2228         return 0;
2229 }
2230
2231 /*
2232  * power management
2233  */
2234 static int snd_via82xx_suspend(struct device *dev)
2235 {
2236         struct snd_card *card = dev_get_drvdata(dev);
2237         struct via82xx *chip = card->private_data;
2238         int i;
2239
2240         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2241         for (i = 0; i < chip->num_devs; i++)
2242                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2243         snd_ac97_suspend(chip->ac97);
2244
2245         /* save misc values */
2246         if (chip->chip_type != TYPE_VIA686) {
2247                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2248                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2249                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2250         }
2251
2252         return 0;
2253 }
2254
2255 static int snd_via82xx_resume(struct device *dev)
2256 {
2257         struct snd_card *card = dev_get_drvdata(dev);
2258         struct via82xx *chip = card->private_data;
2259         int i;
2260
2261         snd_via82xx_chip_init(chip);
2262
2263         if (chip->chip_type == TYPE_VIA686) {
2264                 if (chip->mpu_port_saved)
2265                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2266                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2267                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2268         } else {
2269                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2270                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2271                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2272         }
2273
2274         snd_ac97_resume(chip->ac97);
2275
2276         for (i = 0; i < chip->num_devs; i++)
2277                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2278
2279         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2280         return 0;
2281 }
2282
2283 static DEFINE_SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2284
2285 static void snd_via82xx_free(struct snd_card *card)
2286 {
2287         struct via82xx *chip = card->private_data;
2288         unsigned int i;
2289
2290         /* disable interrupts */
2291         for (i = 0; i < chip->num_devs; i++)
2292                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2293
2294         if (chip->chip_type == TYPE_VIA686) {
2295                 snd_via686_free_gameport(chip);
2296                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2297                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2298         }
2299 }
2300
2301 static int snd_via82xx_create(struct snd_card *card,
2302                               struct pci_dev *pci,
2303                               int chip_type,
2304                               int revision,
2305                               unsigned int ac97_clock)
2306 {
2307         struct via82xx *chip = card->private_data;
2308         int err;
2309
2310         err = pcim_enable_device(pci);
2311         if (err < 0)
2312                 return err;
2313
2314         chip->chip_type = chip_type;
2315         chip->revision = revision;
2316
2317         spin_lock_init(&chip->reg_lock);
2318         spin_lock_init(&chip->rates[0].lock);
2319         spin_lock_init(&chip->rates[1].lock);
2320         chip->card = card;
2321         chip->pci = pci;
2322         chip->irq = -1;
2323
2324         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2325         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2326         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2327                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2328
2329         err = pci_request_regions(pci, card->driver);
2330         if (err < 0)
2331                 return err;
2332         chip->port = pci_resource_start(pci, 0);
2333         if (devm_request_irq(&pci->dev, pci->irq,
2334                              chip_type == TYPE_VIA8233 ?
2335                              snd_via8233_interrupt : snd_via686_interrupt,
2336                              IRQF_SHARED,
2337                              KBUILD_MODNAME, chip)) {
2338                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2339                 return -EBUSY;
2340         }
2341         chip->irq = pci->irq;
2342         card->sync_irq = chip->irq;
2343         card->private_free = snd_via82xx_free;
2344         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2345                 chip->ac97_clock = ac97_clock;
2346
2347         err = snd_via82xx_chip_init(chip);
2348         if (err < 0)
2349                 return err;
2350
2351         /* The 8233 ac97 controller does not implement the master bit
2352          * in the pci command register. IMHO this is a violation of the PCI spec.
2353          * We call pci_set_master here because it does not hurt. */
2354         pci_set_master(pci);
2355         return 0;
2356 }
2357
2358 struct via823x_info {
2359         int revision;
2360         char *name;
2361         int type;
2362 };
2363 static const struct via823x_info via823x_cards[] = {
2364         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2365         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2366         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2367         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2368         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2369         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2370         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2371 };
2372
2373 /*
2374  * auto detection of DXS channel supports.
2375  */
2376
2377 static const struct snd_pci_quirk dxs_allowlist[] = {
2378         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2379         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2380         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2381         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2382         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2383         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2384         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2385         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2386         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2387         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2388         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2389         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2390         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2391         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2392         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2393         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2394         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2395         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2396         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2397         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2398         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2399         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2400         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2401         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2402         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2403         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2404         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2405         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2406         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2407         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2408         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2409         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2410         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2411         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2412         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2413         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2414         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2415         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2416         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2417         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2418         { } /* terminator */
2419 };
2420
2421 static int check_dxs_list(struct pci_dev *pci, int revision)
2422 {
2423         const struct snd_pci_quirk *w;
2424
2425         w = snd_pci_quirk_lookup(pci, dxs_allowlist);
2426         if (w) {
2427                 dev_dbg(&pci->dev, "DXS allow list for %s found\n",
2428                             snd_pci_quirk_name(w));
2429                 return w->value;
2430         }
2431
2432         /* for newer revision, default to DXS_SRC */
2433         if (revision >= VIA_REV_8235)
2434                 return VIA_DXS_SRC;
2435
2436         /*
2437          * not detected, try 48k rate only to be sure.
2438          */
2439         dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n");
2440         dev_info(&pci->dev, "         Please try dxs_support=5 option\n");
2441         dev_info(&pci->dev, "         and report if it works on your machine.\n");
2442         dev_info(&pci->dev, "         For more details, read ALSA-Configuration.txt.\n");
2443         return VIA_DXS_48K;
2444 };
2445
2446 static int __snd_via82xx_probe(struct pci_dev *pci,
2447                                const struct pci_device_id *pci_id)
2448 {
2449         struct snd_card *card;
2450         struct via82xx *chip;
2451         int chip_type = 0, card_type;
2452         unsigned int i;
2453         int err;
2454
2455         err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE,
2456                                 sizeof(*chip), &card);
2457         if (err < 0)
2458                 return err;
2459         chip = card->private_data;
2460
2461         card_type = pci_id->driver_data;
2462         switch (card_type) {
2463         case TYPE_CARD_VIA686:
2464                 strcpy(card->driver, "VIA686A");
2465                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2466                 chip_type = TYPE_VIA686;
2467                 break;
2468         case TYPE_CARD_VIA8233:
2469                 chip_type = TYPE_VIA8233;
2470                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2471                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2472                         if (pci->revision == via823x_cards[i].revision) {
2473                                 chip_type = via823x_cards[i].type;
2474                                 strcpy(card->shortname, via823x_cards[i].name);
2475                                 break;
2476                         }
2477                 }
2478                 if (chip_type != TYPE_VIA8233A) {
2479                         if (dxs_support == VIA_DXS_AUTO)
2480                                 dxs_support = check_dxs_list(pci, pci->revision);
2481                         /* force to use VIA8233 or 8233A model according to
2482                          * dxs_support module option
2483                          */
2484                         if (dxs_support == VIA_DXS_DISABLE)
2485                                 chip_type = TYPE_VIA8233A;
2486                         else
2487                                 chip_type = TYPE_VIA8233;
2488                 }
2489                 if (chip_type == TYPE_VIA8233A)
2490                         strcpy(card->driver, "VIA8233A");
2491                 else if (pci->revision >= VIA_REV_8237)
2492                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2493                 else
2494                         strcpy(card->driver, "VIA8233");
2495                 break;
2496         default:
2497                 dev_err(card->dev, "invalid card type %d\n", card_type);
2498                 return -EINVAL;
2499         }
2500
2501         err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2502                                  ac97_clock);
2503         if (err < 0)
2504                 return err;
2505         err = snd_via82xx_mixer_new(chip, ac97_quirk);
2506         if (err < 0)
2507                 return err;
2508
2509         if (chip_type == TYPE_VIA686) {
2510                 err = snd_via686_pcm_new(chip);
2511                 if (err < 0)
2512                         return err;
2513                 err = snd_via686_init_misc(chip);
2514                 if (err < 0)
2515                         return err;
2516         } else {
2517                 if (chip_type == TYPE_VIA8233A) {
2518                         err = snd_via8233a_pcm_new(chip);
2519                         if (err < 0)
2520                                 return err;
2521                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2522                 } else {
2523                         err = snd_via8233_pcm_new(chip);
2524                         if (err < 0)
2525                                 return err;
2526                         if (dxs_support == VIA_DXS_48K)
2527                                 chip->dxs_fixed = 1;
2528                         else if (dxs_support == VIA_DXS_NO_VRA)
2529                                 chip->no_vra = 1;
2530                         else if (dxs_support == VIA_DXS_SRC) {
2531                                 chip->no_vra = 1;
2532                                 chip->dxs_src = 1;
2533                         }
2534                 }
2535                 err = snd_via8233_init_misc(chip);
2536                 if (err < 0)
2537                         return err;
2538         }
2539
2540         /* disable interrupts */
2541         for (i = 0; i < chip->num_devs; i++)
2542                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2543
2544         snprintf(card->longname, sizeof(card->longname),
2545                  "%s with %s at %#lx, irq %d", card->shortname,
2546                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2547
2548         snd_via82xx_proc_init(chip);
2549
2550         err = snd_card_register(card);
2551         if (err < 0)
2552                 return err;
2553         pci_set_drvdata(pci, card);
2554         return 0;
2555 }
2556
2557 static int snd_via82xx_probe(struct pci_dev *pci,
2558                              const struct pci_device_id *pci_id)
2559 {
2560         return snd_card_free_on_error(&pci->dev, __snd_via82xx_probe(pci, pci_id));
2561 }
2562
2563 static struct pci_driver via82xx_driver = {
2564         .name = KBUILD_MODNAME,
2565         .id_table = snd_via82xx_ids,
2566         .probe = snd_via82xx_probe,
2567         .driver = {
2568                 .pm = &snd_via82xx_pm,
2569         },
2570 };
2571
2572 module_pci_driver(via82xx_driver);