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 #ifdef CONFIG_PM_SLEEP
 351         unsigned char legacy_saved;
 352         unsigned char legacy_cfg_saved;
 353         unsigned char spdif_ctrl_saved;
 354         unsigned char capture_src_saved[2];
 355         unsigned int mpu_port_saved;
 356 #endif
 357
 358         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
 359         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
 360
 361         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
 362
 363         struct pci_dev *pci;
 364         struct snd_card *card;
 365
 366         unsigned int num_devs;
 367         unsigned int playback_devno, multi_devno, capture_devno;
 368         struct viadev devs[VIA_MAX_DEVS];
 369         struct via_rate_lock rates[2]; /* playback and capture */
 370         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
 371         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
 372         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
 373         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
 374
 375         struct snd_pcm *pcms[2];
 376         struct snd_rawmidi *rmidi;
 377         struct snd_kcontrol *dxs_controls[4];
 378
 379         struct snd_ac97_bus *ac97_bus;
 380         struct snd_ac97 *ac97;
 381         unsigned int ac97_clock;
 382         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
 383
 384         spinlock_t reg_lock;
 385         struct snd_info_entry *proc_entry;
 386
 387 #ifdef SUPPORT_JOYSTICK
 388         struct gameport *gameport;
 389 #endif
 390 };
 391
 392 static const struct pci_device_id snd_via82xx_ids[] = {
 393         /* 0x1106, 0x3058 */
 394         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
 395         /* 0x1106, 0x3059 */
 396         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
 397         { 0, }
 398 };
 399
 400 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
 401
 402 /*
 403  */
 404
 405 /*
 406  * allocate and initialize the descriptor buffers
 407  * periods = number of periods
 408  * fragsize = period size in bytes
 409  */
 410 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 411                            struct pci_dev *pci,
 412                            unsigned int periods, unsigned int fragsize)
 413 {
 414         unsigned int i, idx, ofs, rest;
 415         struct via82xx *chip = snd_pcm_substream_chip(substream);
 416         __le32 *pgtbl;
 417
 418         if (dev->table.area == NULL) {
 419                 /* the start of each lists must be aligned to 8 bytes,
 420                  * but the kernel pages are much bigger, so we don't care
 421                  */
 422                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
 423                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
 424                                         &dev->table) < 0)
 425                         return -ENOMEM;
 426         }
 427         if (! dev->idx_table) {
 428                 dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
 429                                                sizeof(*dev->idx_table),
 430                                                GFP_KERNEL);
 431                 if (! dev->idx_table)
 432                         return -ENOMEM;
 433         }
 434
 435         /* fill the entries */
 436         idx = 0;
 437         ofs = 0;
 438         pgtbl = (__le32 *)dev->table.area;
 439         for (i = 0; i < periods; i++) {
 440                 rest = fragsize;
 441                 /* fill descriptors for a period.
 442                  * a period can be split to several descriptors if it's
 443                  * over page boundary.
 444                  */
 445                 do {
 446                         unsigned int r;
 447                         unsigned int flag;
 448                         unsigned int addr;
 449
 450                         if (idx >= VIA_TABLE_SIZE) {
 451                                 dev_err(&pci->dev, "too much table size!\n");
 452                                 return -EINVAL;
 453                         }
 454                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
 455                         pgtbl[idx << 1] = cpu_to_le32(addr);
 456                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
 457                         rest -= r;
 458                         if (! rest) {
 459                                 if (i == periods - 1)
 460                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
 461                                 else
 462                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
 463                         } else
 464                                 flag = 0; /* period continues to the next */
 465                         /*
 466                         dev_dbg(&pci->dev,
 467                                 "tbl %d: at %d  size %d (rest %d)\n",
 468                                 idx, ofs, r, rest);
 469                         */
 470                         pgtbl[(idx<<1) + 1] = cpu_to_le32(r | flag);
 471                         dev->idx_table[idx].offset = ofs;
 472                         dev->idx_table[idx].size = r;
 473                         ofs += r;
 474                         idx++;
 475                 } while (rest > 0);
 476         }
 477         dev->tbl_entries = idx;
 478         dev->bufsize = periods * fragsize;
 479         dev->bufsize2 = dev->bufsize / 2;
 480         dev->fragsize = fragsize;
 481         return 0;
 482 }
 483
 484
 485 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
 486                            struct pci_dev *pci)
 487 {
 488         if (dev->table.area) {
 489                 snd_dma_free_pages(&dev->table);
 490                 dev->table.area = NULL;
 491         }
 492         kfree(dev->idx_table);
 493         dev->idx_table = NULL;
 494         return 0;
 495 }
 496
 497 /*
 498  *  Basic I/O
 499  */
 500
 501 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
 502 {
 503         return inl(VIAREG(chip, AC97));
 504 }
 505
 506 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
 507 {
 508         outl(val, VIAREG(chip, AC97));
 509 }
 510
 511 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
 512 {
 513         unsigned int timeout = 1000;    /* 1ms */
 514         unsigned int val;
 515
 516         while (timeout-- > 0) {
 517                 udelay(1);
 518                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
 519                         return val & 0xffff;
 520         }
 521         dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
 522                    secondary, snd_via82xx_codec_xread(chip));
 523         return -EIO;
 524 }
 525
 526 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 527 {
 528         unsigned int timeout = 1000;    /* 1ms */
 529         unsigned int val, val1;
 530         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 531                                          VIA_REG_AC97_SECONDARY_VALID;
 532
 533         while (timeout-- > 0) {
 534                 val = snd_via82xx_codec_xread(chip);
 535                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 536                 if (val1 == stat)
 537                         return val & 0xffff;
 538                 udelay(1);
 539         }
 540         return -EIO;
 541 }
 542
 543 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 544 {
 545         struct via82xx *chip = ac97->private_data;
 546         __always_unused int err;
 547         err = snd_via82xx_codec_ready(chip, ac97->num);
 548         /* here we need to wait fairly for long time.. */
 549         if (!nodelay)
 550                 msleep(500);
 551 }
 552
 553 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 554                                     unsigned short reg,
 555                                     unsigned short val)
 556 {
 557         struct via82xx *chip = ac97->private_data;
 558         unsigned int xval;
 559
 560         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 561         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 562         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 563         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 564         snd_via82xx_codec_xwrite(chip, xval);
 565         snd_via82xx_codec_ready(chip, ac97->num);
 566 }
 567
 568 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 569 {
 570         struct via82xx *chip = ac97->private_data;
 571         unsigned int xval, val = 0xffff;
 572         int again = 0;
 573
 574         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 575         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 576         xval |= VIA_REG_AC97_READ;
 577         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 578         while (1) {
 579                 if (again++ > 3) {
 580                         dev_err(chip->card->dev,
 581                                 "codec_read: codec %i is not valid [0x%x]\n",
 582                                    ac97->num, snd_via82xx_codec_xread(chip));
 583                         return 0xffff;
 584                 }
 585                 snd_via82xx_codec_xwrite(chip, xval);
 586                 udelay (20);
 587                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 588                         udelay(25);
 589                         val = snd_via82xx_codec_xread(chip);
 590                         break;
 591                 }
 592         }
 593         return val & 0xffff;
 594 }
 595
 596 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 597 {
 598         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 599              VIADEV_REG(viadev, OFFSET_CONTROL));
 600         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 601         udelay(50);
 602         /* disable interrupts */
 603         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 604         /* clear interrupts */
 605         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 606         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 607         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 608         viadev->lastpos = 0;
 609         viadev->hwptr_done = 0;
 610 }
 611
 612
 613 /*
 614  *  Interrupt handler
 615  *  Used for 686 and 8233A
 616  */
 617 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 618 {
 619         struct via82xx *chip = dev_id;
 620         unsigned int status;
 621         unsigned int i;
 622
 623         status = inl(VIAREG(chip, SGD_SHADOW));
 624         if (! (status & chip->intr_mask)) {
 625                 if (chip->rmidi)
 626                         /* check mpu401 interrupt */
 627                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 628                 return IRQ_NONE;
 629         }
 630
 631         /* check status for each stream */
 632         spin_lock(&chip->reg_lock);
 633         for (i = 0; i < chip->num_devs; i++) {
 634                 struct viadev *viadev = &chip->devs[i];
 635                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 636                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 637                         continue;
 638                 if (viadev->substream && viadev->running) {
 639                         /*
 640                          * Update hwptr_done based on 'period elapsed'
 641                          * interrupts. We'll use it, when the chip returns 0
 642                          * for OFFSET_CURR_COUNT.
 643                          */
 644                         if (c_status & VIA_REG_STAT_EOL)
 645                                 viadev->hwptr_done = 0;
 646                         else
 647                                 viadev->hwptr_done += viadev->fragsize;
 648                         viadev->in_interrupt = c_status;
 649                         spin_unlock(&chip->reg_lock);
 650                         snd_pcm_period_elapsed(viadev->substream);
 651                         spin_lock(&chip->reg_lock);
 652                         viadev->in_interrupt = 0;
 653                 }
 654                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 655         }
 656         spin_unlock(&chip->reg_lock);
 657         return IRQ_HANDLED;
 658 }
 659
 660 /*
 661  *  Interrupt handler
 662  */
 663 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 664 {
 665         struct via82xx *chip = dev_id;
 666         unsigned int status;
 667         unsigned int i;
 668         int irqreturn = 0;
 669
 670         /* check status for each stream */
 671         spin_lock(&chip->reg_lock);
 672         status = inl(VIAREG(chip, SGD_SHADOW));
 673
 674         for (i = 0; i < chip->num_devs; i++) {
 675                 struct viadev *viadev = &chip->devs[i];
 676                 struct snd_pcm_substream *substream;
 677                 unsigned char c_status, shadow_status;
 678
 679                 shadow_status = (status >> viadev->shadow_shift) &
 680                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 681                          VIA_REG_STAT_FLAG);
 682                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 683                 if (!c_status)
 684                         continue;
 685
 686                 substream = viadev->substream;
 687                 if (substream && viadev->running) {
 688                         /*
 689                          * Update hwptr_done based on 'period elapsed'
 690                          * interrupts. We'll use it, when the chip returns 0
 691                          * for OFFSET_CURR_COUNT.
 692                          */
 693                         if (c_status & VIA_REG_STAT_EOL)
 694                                 viadev->hwptr_done = 0;
 695                         else
 696                                 viadev->hwptr_done += viadev->fragsize;
 697                         viadev->in_interrupt = c_status;
 698                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 699                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 700                         spin_unlock(&chip->reg_lock);
 701
 702                         snd_pcm_period_elapsed(substream);
 703
 704                         spin_lock(&chip->reg_lock);
 705                         viadev->in_interrupt = 0;
 706                 }
 707                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 708                 irqreturn = 1;
 709         }
 710         spin_unlock(&chip->reg_lock);
 711         return IRQ_RETVAL(irqreturn);
 712 }
 713
 714 /*
 715  *  PCM callbacks
 716  */
 717
 718 /*
 719  * trigger callback
 720  */
 721 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 722 {
 723         struct via82xx *chip = snd_pcm_substream_chip(substream);
 724         struct viadev *viadev = substream->runtime->private_data;
 725         unsigned char val;
 726
 727         if (chip->chip_type != TYPE_VIA686)
 728                 val = VIA_REG_CTRL_INT;
 729         else
 730                 val = 0;
 731         switch (cmd) {
 732         case SNDRV_PCM_TRIGGER_START:
 733         case SNDRV_PCM_TRIGGER_RESUME:
 734                 val |= VIA_REG_CTRL_START;
 735                 viadev->running = 1;
 736                 break;
 737         case SNDRV_PCM_TRIGGER_STOP:
 738         case SNDRV_PCM_TRIGGER_SUSPEND:
 739                 val = VIA_REG_CTRL_TERMINATE;
 740                 viadev->running = 0;
 741                 break;
 742         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 743                 val |= VIA_REG_CTRL_PAUSE;
 744                 viadev->running = 0;
 745                 break;
 746         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 747                 viadev->running = 1;
 748                 break;
 749         default:
 750                 return -EINVAL;
 751         }
 752         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 753         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 754                 snd_via82xx_channel_reset(chip, viadev);
 755         return 0;
 756 }
 757
 758
 759 /*
 760  * pointer callbacks
 761  */
 762
 763 /*
 764  * calculate the linear position at the given sg-buffer index and the rest count
 765  */
 766
 767 #define check_invalid_pos(viadev,pos) \
 768         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 769                                      viadev->lastpos < viadev->bufsize2))
 770
 771 static inline unsigned int calc_linear_pos(struct via82xx *chip,
 772                                            struct viadev *viadev,
 773                                            unsigned int idx,
 774                                            unsigned int count)
 775 {
 776         unsigned int size, base, res;
 777
 778         size = viadev->idx_table[idx].size;
 779         base = viadev->idx_table[idx].offset;
 780         res = base + size - count;
 781         if (res >= viadev->bufsize)
 782                 res -= viadev->bufsize;
 783
 784         /* check the validity of the calculated position */
 785         if (size < count) {
 786                 dev_dbg(chip->card->dev,
 787                         "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 788                            (int)size, (int)count);
 789                 res = viadev->lastpos;
 790         } else {
 791                 if (! count) {
 792                         /* Some mobos report count = 0 on the DMA boundary,
 793                          * i.e. count = size indeed.
 794                          * Let's check whether this step is above the expected size.
 795                          */
 796                         int delta = res - viadev->lastpos;
 797                         if (delta < 0)
 798                                 delta += viadev->bufsize;
 799                         if ((unsigned int)delta > viadev->fragsize)
 800                                 res = base;
 801                 }
 802                 if (check_invalid_pos(viadev, res)) {
 803 #ifdef POINTER_DEBUG
 804                         dev_dbg(chip->card->dev,
 805                                 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
 806                                 idx, viadev->tbl_entries,
 807                                viadev->lastpos, viadev->bufsize2,
 808                                viadev->idx_table[idx].offset,
 809                                viadev->idx_table[idx].size, count);
 810 #endif
 811                         /* count register returns full size when end of buffer is reached */
 812                         res = base + size;
 813                         if (check_invalid_pos(viadev, res)) {
 814                                 dev_dbg(chip->card->dev,
 815                                         "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 816                                 res = viadev->lastpos;
 817                         }
 818                 }
 819         }
 820         return res;
 821 }
 822
 823 /*
 824  * get the current pointer on via686
 825  */
 826 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 827 {
 828         struct via82xx *chip = snd_pcm_substream_chip(substream);
 829         struct viadev *viadev = substream->runtime->private_data;
 830         unsigned int idx, ptr, count, res;
 831
 832         if (snd_BUG_ON(!viadev->tbl_entries))
 833                 return 0;
 834         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 835                 return 0;
 836
 837         spin_lock(&chip->reg_lock);
 838         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 839         /* The via686a does not have the current index register,
 840          * so we need to calculate the index from CURR_PTR.
 841          */
 842         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 843         if (ptr <= (unsigned int)viadev->table.addr)
 844                 idx = 0;
 845         else /* CURR_PTR holds the address + 8 */
 846                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 847         res = calc_linear_pos(chip, viadev, idx, count);
 848         viadev->lastpos = res; /* remember the last position */
 849         spin_unlock(&chip->reg_lock);
 850
 851         return bytes_to_frames(substream->runtime, res);
 852 }
 853
 854 /*
 855  * get the current pointer on via823x
 856  */
 857 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 858 {
 859         struct via82xx *chip = snd_pcm_substream_chip(substream);
 860         struct viadev *viadev = substream->runtime->private_data;
 861         unsigned int idx, count, res;
 862         int status;
 863
 864         if (snd_BUG_ON(!viadev->tbl_entries))
 865                 return 0;
 866
 867         spin_lock(&chip->reg_lock);
 868         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 869         status = viadev->in_interrupt;
 870         if (!status)
 871                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 872
 873         /* An apparent bug in the 8251 is worked around by sending a
 874          * REG_CTRL_START. */
 875         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 876                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 877
 878         if (!(status & VIA_REG_STAT_ACTIVE)) {
 879                 res = 0;
 880                 goto unlock;
 881         }
 882         if (count & 0xffffff) {
 883                 idx = count >> 24;
 884                 if (idx >= viadev->tbl_entries) {
 885 #ifdef POINTER_DEBUG
 886                         dev_dbg(chip->card->dev,
 887                                 "fail: invalid idx = %i/%i\n", idx,
 888                                viadev->tbl_entries);
 889 #endif
 890                         res = viadev->lastpos;
 891                 } else {
 892                         count &= 0xffffff;
 893                         res = calc_linear_pos(chip, viadev, idx, count);
 894                 }
 895         } else {
 896                 res = viadev->hwptr_done;
 897                 if (!viadev->in_interrupt) {
 898                         if (status & VIA_REG_STAT_EOL) {
 899                                 res = 0;
 900                         } else
 901                                 if (status & VIA_REG_STAT_FLAG) {
 902                                         res += viadev->fragsize;
 903                                 }
 904                 }
 905         }
 906 unlock:
 907         viadev->lastpos = res;
 908         spin_unlock(&chip->reg_lock);
 909
 910         return bytes_to_frames(substream->runtime, res);
 911 }
 912
 913
 914 /*
 915  * hw_params callback:
 916  * allocate the buffer and build up the buffer description table
 917  */
 918 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 919                                  struct snd_pcm_hw_params *hw_params)
 920 {
 921         struct via82xx *chip = snd_pcm_substream_chip(substream);
 922         struct viadev *viadev = substream->runtime->private_data;
 923
 924         return build_via_table(viadev, substream, chip->pci,
 925                                params_periods(hw_params),
 926                                params_period_bytes(hw_params));
 927 }
 928
 929 /*
 930  * hw_free callback:
 931  * clean up the buffer description table and release the buffer
 932  */
 933 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 934 {
 935         struct via82xx *chip = snd_pcm_substream_chip(substream);
 936         struct viadev *viadev = substream->runtime->private_data;
 937
 938         clean_via_table(viadev, substream, chip->pci);
 939         return 0;
 940 }
 941
 942
 943 /*
 944  * set up the table pointer
 945  */
 946 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 947 {
 948         snd_via82xx_codec_ready(chip, 0);
 949         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 950         udelay(20);
 951         snd_via82xx_codec_ready(chip, 0);
 952 }
 953
 954 /*
 955  * prepare callback for playback and capture on via686
 956  */
 957 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 958                                 struct snd_pcm_runtime *runtime)
 959 {
 960         snd_via82xx_channel_reset(chip, viadev);
 961         /* this must be set after channel_reset */
 962         snd_via82xx_set_table_ptr(chip, viadev);
 963         outb(VIA_REG_TYPE_AUTOSTART |
 964              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 965              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 966              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 967              VIA_REG_TYPE_INT_EOL |
 968              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 969 }
 970
 971 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 972 {
 973         struct via82xx *chip = snd_pcm_substream_chip(substream);
 974         struct viadev *viadev = substream->runtime->private_data;
 975         struct snd_pcm_runtime *runtime = substream->runtime;
 976
 977         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 978         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 979         via686_setup_format(chip, viadev, runtime);
 980         return 0;
 981 }
 982
 983 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 984 {
 985         struct via82xx *chip = snd_pcm_substream_chip(substream);
 986         struct viadev *viadev = substream->runtime->private_data;
 987         struct snd_pcm_runtime *runtime = substream->runtime;
 988
 989         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 990         via686_setup_format(chip, viadev, runtime);
 991         return 0;
 992 }
 993
 994 /*
 995  * lock the current rate
 996  */
 997 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 998 {
 999         int changed = 0;
1000
1001         spin_lock_irq(&rec->lock);
1002         if (rec->rate != rate) {
1003                 if (rec->rate && rec->used > 1) /* already set */
1004                         changed = -EINVAL;
1005                 else {
1006                         rec->rate = rate;
1007                         changed = 1;
1008                 }
1009         }
1010         spin_unlock_irq(&rec->lock);
1011         return changed;
1012 }
1013
1014 /*
1015  * prepare callback for DSX playback on via823x
1016  */
1017 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1018 {
1019         struct via82xx *chip = snd_pcm_substream_chip(substream);
1020         struct viadev *viadev = substream->runtime->private_data;
1021         struct snd_pcm_runtime *runtime = substream->runtime;
1022         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1023         int rate_changed;
1024         u32 rbits;
1025
1026         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 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         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1201                 return err;
1202
1203         if (use_src) {
1204                 err = snd_pcm_hw_rule_noresample(runtime, 48000);
1205                 if (err < 0)
1206                         return err;
1207         }
1208
1209         runtime->private_data = viadev;
1210         viadev->substream = substream;
1211
1212         return 0;
1213 }
1214
1215
1216 /*
1217  * open callback for playback on via686
1218  */
1219 static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1220 {
1221         struct via82xx *chip = snd_pcm_substream_chip(substream);
1222         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1223         int err;
1224
1225         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1226                 return err;
1227         return 0;
1228 }
1229
1230 /*
1231  * open callback for playback on via823x DXS
1232  */
1233 static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1234 {
1235         struct via82xx *chip = snd_pcm_substream_chip(substream);
1236         struct viadev *viadev;
1237         unsigned int stream;
1238         int err;
1239
1240         viadev = &chip->devs[chip->playback_devno + substream->number];
1241         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1242                 return err;
1243         stream = viadev->reg_offset / 0x10;
1244         if (chip->dxs_controls[stream]) {
1245                 chip->playback_volume[stream][0] =
1246                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1247                 chip->playback_volume[stream][1] =
1248                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1249                 chip->dxs_controls[stream]->vd[0].access &=
1250                         ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1251                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1252                                SNDRV_CTL_EVENT_MASK_INFO,
1253                                &chip->dxs_controls[stream]->id);
1254         }
1255         return 0;
1256 }
1257
1258 /*
1259  * open callback for playback on via823x multi-channel
1260  */
1261 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1262 {
1263         struct via82xx *chip = snd_pcm_substream_chip(substream);
1264         struct viadev *viadev = &chip->devs[chip->multi_devno];
1265         int err;
1266         /* channels constraint for VIA8233A
1267          * 3 and 5 channels are not supported
1268          */
1269         static const unsigned int channels[] = {
1270                 1, 2, 4, 6
1271         };
1272         static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1273                 .count = ARRAY_SIZE(channels),
1274                 .list = channels,
1275                 .mask = 0,
1276         };
1277
1278         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1279                 return err;
1280         substream->runtime->hw.channels_max = 6;
1281         if (chip->revision == VIA_REV_8233A)
1282                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1283                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1284                                            &hw_constraints_channels);
1285         return 0;
1286 }
1287
1288 /*
1289  * open callback for capture on via686 and via823x
1290  */
1291 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1292 {
1293         struct via82xx *chip = snd_pcm_substream_chip(substream);
1294         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1295
1296         return snd_via82xx_pcm_open(chip, viadev, substream);
1297 }
1298
1299 /*
1300  * close callback
1301  */
1302 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1303 {
1304         struct via82xx *chip = snd_pcm_substream_chip(substream);
1305         struct viadev *viadev = substream->runtime->private_data;
1306         struct via_rate_lock *ratep;
1307
1308         /* release the rate lock */
1309         ratep = &chip->rates[viadev->direction];
1310         spin_lock_irq(&ratep->lock);
1311         ratep->used--;
1312         if (! ratep->used)
1313                 ratep->rate = 0;
1314         spin_unlock_irq(&ratep->lock);
1315         if (! ratep->rate) {
1316                 if (! viadev->direction) {
1317                         snd_ac97_update_power(chip->ac97,
1318                                               AC97_PCM_FRONT_DAC_RATE, 0);
1319                         snd_ac97_update_power(chip->ac97,
1320                                               AC97_PCM_SURR_DAC_RATE, 0);
1321                         snd_ac97_update_power(chip->ac97,
1322                                               AC97_PCM_LFE_DAC_RATE, 0);
1323                 } else
1324                         snd_ac97_update_power(chip->ac97,
1325                                               AC97_PCM_LR_ADC_RATE, 0);
1326         }
1327         viadev->substream = NULL;
1328         return 0;
1329 }
1330
1331 static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1332 {
1333         struct via82xx *chip = snd_pcm_substream_chip(substream);
1334         struct viadev *viadev = substream->runtime->private_data;
1335         unsigned int stream;
1336
1337         stream = viadev->reg_offset / 0x10;
1338         if (chip->dxs_controls[stream]) {
1339                 chip->dxs_controls[stream]->vd[0].access |=
1340                         SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1341                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1342                                &chip->dxs_controls[stream]->id);
1343         }
1344         return snd_via82xx_pcm_close(substream);
1345 }
1346
1347
1348 /* via686 playback callbacks */
1349 static const struct snd_pcm_ops snd_via686_playback_ops = {
1350         .open =         snd_via686_playback_open,
1351         .close =        snd_via82xx_pcm_close,
1352         .hw_params =    snd_via82xx_hw_params,
1353         .hw_free =      snd_via82xx_hw_free,
1354         .prepare =      snd_via686_playback_prepare,
1355         .trigger =      snd_via82xx_pcm_trigger,
1356         .pointer =      snd_via686_pcm_pointer,
1357 };
1358
1359 /* via686 capture callbacks */
1360 static const struct snd_pcm_ops snd_via686_capture_ops = {
1361         .open =         snd_via82xx_capture_open,
1362         .close =        snd_via82xx_pcm_close,
1363         .hw_params =    snd_via82xx_hw_params,
1364         .hw_free =      snd_via82xx_hw_free,
1365         .prepare =      snd_via686_capture_prepare,
1366         .trigger =      snd_via82xx_pcm_trigger,
1367         .pointer =      snd_via686_pcm_pointer,
1368 };
1369
1370 /* via823x DSX playback callbacks */
1371 static const struct snd_pcm_ops snd_via8233_playback_ops = {
1372         .open =         snd_via8233_playback_open,
1373         .close =        snd_via8233_playback_close,
1374         .hw_params =    snd_via82xx_hw_params,
1375         .hw_free =      snd_via82xx_hw_free,
1376         .prepare =      snd_via8233_playback_prepare,
1377         .trigger =      snd_via82xx_pcm_trigger,
1378         .pointer =      snd_via8233_pcm_pointer,
1379 };
1380
1381 /* via823x multi-channel playback callbacks */
1382 static const struct snd_pcm_ops snd_via8233_multi_ops = {
1383         .open =         snd_via8233_multi_open,
1384         .close =        snd_via82xx_pcm_close,
1385         .hw_params =    snd_via82xx_hw_params,
1386         .hw_free =      snd_via82xx_hw_free,
1387         .prepare =      snd_via8233_multi_prepare,
1388         .trigger =      snd_via82xx_pcm_trigger,
1389         .pointer =      snd_via8233_pcm_pointer,
1390 };
1391
1392 /* via823x capture callbacks */
1393 static const struct snd_pcm_ops snd_via8233_capture_ops = {
1394         .open =         snd_via82xx_capture_open,
1395         .close =        snd_via82xx_pcm_close,
1396         .hw_params =    snd_via82xx_hw_params,
1397         .hw_free =      snd_via82xx_hw_free,
1398         .prepare =      snd_via8233_capture_prepare,
1399         .trigger =      snd_via82xx_pcm_trigger,
1400         .pointer =      snd_via8233_pcm_pointer,
1401 };
1402
1403
1404 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1405                         int shadow_pos, int direction)
1406 {
1407         chip->devs[idx].reg_offset = reg_offset;
1408         chip->devs[idx].shadow_shift = shadow_pos * 4;
1409         chip->devs[idx].direction = direction;
1410         chip->devs[idx].port = chip->port + reg_offset;
1411 }
1412
1413 /*
1414  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1415  */
1416 static int snd_via8233_pcm_new(struct via82xx *chip)
1417 {
1418         struct snd_pcm *pcm;
1419         struct snd_pcm_chmap *chmap;
1420         int i, err;
1421
1422         chip->playback_devno = 0;       /* x 4 */
1423         chip->multi_devno = 4;          /* x 1 */
1424         chip->capture_devno = 5;        /* x 2 */
1425         chip->num_devs = 7;
1426         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1427
1428         /* PCM #0:  4 DSX playbacks and 1 capture */
1429         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1430         if (err < 0)
1431                 return err;
1432         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1433         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1434         pcm->private_data = chip;
1435         strcpy(pcm->name, chip->card->shortname);
1436         chip->pcms[0] = pcm;
1437         /* set up playbacks */
1438         for (i = 0; i < 4; i++)
1439                 init_viadev(chip, i, 0x10 * i, i, 0);
1440         /* capture */
1441         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1442
1443         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1444                                        &chip->pci->dev,
1445                                        64*1024, VIA_MAX_BUFSIZE);
1446
1447         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1448                                      snd_pcm_std_chmaps, 2, 0,
1449                                      &chmap);
1450         if (err < 0)
1451                 return err;
1452
1453         /* PCM #1:  multi-channel playback and 2nd capture */
1454         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1455         if (err < 0)
1456                 return err;
1457         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1458         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1459         pcm->private_data = chip;
1460         strcpy(pcm->name, chip->card->shortname);
1461         chip->pcms[1] = pcm;
1462         /* set up playback */
1463         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1464         /* set up capture */
1465         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1466
1467         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1468                                        &chip->pci->dev,
1469                                        64*1024, VIA_MAX_BUFSIZE);
1470
1471         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1472                                      snd_pcm_alt_chmaps, 6, 0,
1473                                      &chmap);
1474         if (err < 0)
1475                 return err;
1476         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1477
1478         return 0;
1479 }
1480
1481 /*
1482  * create pcm instances for VIA8233A
1483  */
1484 static int snd_via8233a_pcm_new(struct via82xx *chip)
1485 {
1486         struct snd_pcm *pcm;
1487         struct snd_pcm_chmap *chmap;
1488         int err;
1489
1490         chip->multi_devno = 0;
1491         chip->playback_devno = 1;
1492         chip->capture_devno = 2;
1493         chip->num_devs = 3;
1494         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1495
1496         /* PCM #0:  multi-channel playback and capture */
1497         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1498         if (err < 0)
1499                 return err;
1500         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1501         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1502         pcm->private_data = chip;
1503         strcpy(pcm->name, chip->card->shortname);
1504         chip->pcms[0] = pcm;
1505         /* set up playback */
1506         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1507         /* capture */
1508         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1509
1510         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1511                                        &chip->pci->dev,
1512                                        64*1024, VIA_MAX_BUFSIZE);
1513
1514         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1515                                      snd_pcm_alt_chmaps, 6, 0,
1516                                      &chmap);
1517         if (err < 0)
1518                 return err;
1519         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1520
1521         /* SPDIF supported? */
1522         if (! ac97_can_spdif(chip->ac97))
1523                 return 0;
1524
1525         /* PCM #1:  DXS3 playback (for spdif) */
1526         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1527         if (err < 0)
1528                 return err;
1529         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1530         pcm->private_data = chip;
1531         strcpy(pcm->name, chip->card->shortname);
1532         chip->pcms[1] = pcm;
1533         /* set up playback */
1534         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1535
1536         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1537                                        &chip->pci->dev,
1538                                        64*1024, VIA_MAX_BUFSIZE);
1539         return 0;
1540 }
1541
1542 /*
1543  * create a pcm instance for via686a/b
1544  */
1545 static int snd_via686_pcm_new(struct via82xx *chip)
1546 {
1547         struct snd_pcm *pcm;
1548         int err;
1549
1550         chip->playback_devno = 0;
1551         chip->capture_devno = 1;
1552         chip->num_devs = 2;
1553         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1554
1555         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1556         if (err < 0)
1557                 return err;
1558         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1559         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1560         pcm->private_data = chip;
1561         strcpy(pcm->name, chip->card->shortname);
1562         chip->pcms[0] = pcm;
1563         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1564         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1565
1566         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1567                                        &chip->pci->dev,
1568                                        64*1024, VIA_MAX_BUFSIZE);
1569         return 0;
1570 }
1571
1572
1573 /*
1574  *  Mixer part
1575  */
1576
1577 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1578                                            struct snd_ctl_elem_info *uinfo)
1579 {
1580         /* formerly they were "Line" and "Mic", but it looks like that they
1581          * have nothing to do with the actual physical connections...
1582          */
1583         static const char * const texts[2] = {
1584                 "Input1", "Input2"
1585         };
1586         return snd_ctl_enum_info(uinfo, 1, 2, texts);
1587 }
1588
1589 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1590                                           struct snd_ctl_elem_value *ucontrol)
1591 {
1592         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1593         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1594         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1595         return 0;
1596 }
1597
1598 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1599                                           struct snd_ctl_elem_value *ucontrol)
1600 {
1601         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1602         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1603         u8 val, oval;
1604
1605         spin_lock_irq(&chip->reg_lock);
1606         oval = inb(port);
1607         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1608         if (ucontrol->value.enumerated.item[0])
1609                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1610         if (val != oval)
1611                 outb(val, port);
1612         spin_unlock_irq(&chip->reg_lock);
1613         return val != oval;
1614 }
1615
1616 static struct snd_kcontrol_new snd_via8233_capture_source = {
1617         .name = "Input Source Select",
1618         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1619         .info = snd_via8233_capture_source_info,
1620         .get = snd_via8233_capture_source_get,
1621         .put = snd_via8233_capture_source_put,
1622 };
1623
1624 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1625
1626 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1627                                       struct snd_ctl_elem_value *ucontrol)
1628 {
1629         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1630         u8 val;
1631
1632         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1633         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1634         return 0;
1635 }
1636
1637 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1638                                       struct snd_ctl_elem_value *ucontrol)
1639 {
1640         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1641         u8 val, oval;
1642
1643         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1644         val = oval & ~VIA8233_SPDIF_DX3;
1645         if (ucontrol->value.integer.value[0])
1646                 val |= VIA8233_SPDIF_DX3;
1647         /* save the spdif flag for rate filtering */
1648         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1649         if (val != oval) {
1650                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1651                 return 1;
1652         }
1653         return 0;
1654 }
1655
1656 static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = {
1657         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1658         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1659         .info = snd_via8233_dxs3_spdif_info,
1660         .get = snd_via8233_dxs3_spdif_get,
1661         .put = snd_via8233_dxs3_spdif_put,
1662 };
1663
1664 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1665                                        struct snd_ctl_elem_info *uinfo)
1666 {
1667         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1668         uinfo->count = 2;
1669         uinfo->value.integer.min = 0;
1670         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1671         return 0;
1672 }
1673
1674 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1675                                       struct snd_ctl_elem_value *ucontrol)
1676 {
1677         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1678         unsigned int idx = kcontrol->id.subdevice;
1679
1680         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1681         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1682         return 0;
1683 }
1684
1685 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1686                                          struct snd_ctl_elem_value *ucontrol)
1687 {
1688         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1689         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1690         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1691         return 0;
1692 }
1693
1694 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1695                                       struct snd_ctl_elem_value *ucontrol)
1696 {
1697         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1698         unsigned int idx = kcontrol->id.subdevice;
1699         unsigned long port = chip->port + 0x10 * idx;
1700         unsigned char val;
1701         int i, change = 0;
1702
1703         for (i = 0; i < 2; i++) {
1704                 val = ucontrol->value.integer.value[i];
1705                 if (val > VIA_DXS_MAX_VOLUME)
1706                         val = VIA_DXS_MAX_VOLUME;
1707                 val = VIA_DXS_MAX_VOLUME - val;
1708                 change |= val != chip->playback_volume[idx][i];
1709                 if (change) {
1710                         chip->playback_volume[idx][i] = val;
1711                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1712                 }
1713         }
1714         return change;
1715 }
1716
1717 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1718                                          struct snd_ctl_elem_value *ucontrol)
1719 {
1720         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1721         unsigned int idx;
1722         unsigned char val;
1723         int i, change = 0;
1724
1725         for (i = 0; i < 2; i++) {
1726                 val = ucontrol->value.integer.value[i];
1727                 if (val > VIA_DXS_MAX_VOLUME)
1728                         val = VIA_DXS_MAX_VOLUME;
1729                 val = VIA_DXS_MAX_VOLUME - val;
1730                 if (val != chip->playback_volume_c[i]) {
1731                         change = 1;
1732                         chip->playback_volume_c[i] = val;
1733                         for (idx = 0; idx < 4; idx++) {
1734                                 unsigned long port = chip->port + 0x10 * idx;
1735                                 chip->playback_volume[idx][i] = val;
1736                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1737                         }
1738                 }
1739         }
1740         return change;
1741 }
1742
1743 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1744
1745 static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = {
1746         .name = "PCM Playback Volume",
1747         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1748         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1749                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1750         .info = snd_via8233_dxs_volume_info,
1751         .get = snd_via8233_pcmdxs_volume_get,
1752         .put = snd_via8233_pcmdxs_volume_put,
1753         .tlv = { .p = db_scale_dxs }
1754 };
1755
1756 static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = {
1757         .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1758         .device = 0,
1759         /* .subdevice set later */
1760         .name = "PCM Playback Volume",
1761         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1762                   SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1763                   SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1764         .info = snd_via8233_dxs_volume_info,
1765         .get = snd_via8233_dxs_volume_get,
1766         .put = snd_via8233_dxs_volume_put,
1767         .tlv = { .p = db_scale_dxs }
1768 };
1769
1770 /*
1771  */
1772
1773 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1774 {
1775         struct via82xx *chip = bus->private_data;
1776         chip->ac97_bus = NULL;
1777 }
1778
1779 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1780 {
1781         struct via82xx *chip = ac97->private_data;
1782         chip->ac97 = NULL;
1783 }
1784
1785 static const struct ac97_quirk ac97_quirks[] = {
1786         {
1787                 .subvendor = 0x1106,
1788                 .subdevice = 0x4161,
1789                 .codec_id = 0x56494161, /* VT1612A */
1790                 .name = "Soltek SL-75DRV5",
1791                 .type = AC97_TUNE_NONE
1792         },
1793         {       /* FIXME: which codec? */
1794                 .subvendor = 0x1106,
1795                 .subdevice = 0x4161,
1796                 .name = "ASRock K7VT2",
1797                 .type = AC97_TUNE_HP_ONLY
1798         },
1799         {
1800                 .subvendor = 0x110a,
1801                 .subdevice = 0x0079,
1802                 .name = "Fujitsu Siemens D1289",
1803                 .type = AC97_TUNE_HP_ONLY
1804         },
1805         {
1806                 .subvendor = 0x1019,
1807                 .subdevice = 0x0a81,
1808                 .name = "ECS K7VTA3",
1809                 .type = AC97_TUNE_HP_ONLY
1810         },
1811         {
1812                 .subvendor = 0x1019,
1813                 .subdevice = 0x0a85,
1814                 .name = "ECS L7VMM2",
1815                 .type = AC97_TUNE_HP_ONLY
1816         },
1817         {
1818                 .subvendor = 0x1019,
1819                 .subdevice = 0x1841,
1820                 .name = "ECS K7VTA3",
1821                 .type = AC97_TUNE_HP_ONLY
1822         },
1823         {
1824                 .subvendor = 0x1849,
1825                 .subdevice = 0x3059,
1826                 .name = "ASRock K7VM2",
1827                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1828         },
1829         {
1830                 .subvendor = 0x14cd,
1831                 .subdevice = 0x7002,
1832                 .name = "Unknown",
1833                 .type = AC97_TUNE_ALC_JACK
1834         },
1835         {
1836                 .subvendor = 0x1071,
1837                 .subdevice = 0x8590,
1838                 .name = "Mitac Mobo",
1839                 .type = AC97_TUNE_ALC_JACK
1840         },
1841         {
1842                 .subvendor = 0x161f,
1843                 .subdevice = 0x202b,
1844                 .name = "Arima Notebook",
1845                 .type = AC97_TUNE_HP_ONLY,
1846         },
1847         {
1848                 .subvendor = 0x161f,
1849                 .subdevice = 0x2032,
1850                 .name = "Targa Traveller 811",
1851                 .type = AC97_TUNE_HP_ONLY,
1852         },
1853         {
1854                 .subvendor = 0x161f,
1855                 .subdevice = 0x2032,
1856                 .name = "m680x",
1857                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1858         },
1859         {
1860                 .subvendor = 0x1297,
1861                 .subdevice = 0xa232,
1862                 .name = "Shuttle AK32VN",
1863                 .type = AC97_TUNE_HP_ONLY
1864         },
1865         { } /* terminator */
1866 };
1867
1868 static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1869 {
1870         struct snd_ac97_template ac97;
1871         int err;
1872         static const struct snd_ac97_bus_ops ops = {
1873                 .write = snd_via82xx_codec_write,
1874                 .read = snd_via82xx_codec_read,
1875                 .wait = snd_via82xx_codec_wait,
1876         };
1877
1878         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1879                 return err;
1880         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1881         chip->ac97_bus->clock = chip->ac97_clock;
1882
1883         memset(&ac97, 0, sizeof(ac97));
1884         ac97.private_data = chip;
1885         ac97.private_free = snd_via82xx_mixer_free_ac97;
1886         ac97.pci = chip->pci;
1887         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1888         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1889                 return err;
1890
1891         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1892
1893         if (chip->chip_type != TYPE_VIA686) {
1894                 /* use slot 10/11 */
1895                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1896         }
1897
1898         return 0;
1899 }
1900
1901 #ifdef SUPPORT_JOYSTICK
1902 #define JOYSTICK_ADDR   0x200
1903 static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1904 {
1905         struct gameport *gp;
1906         struct resource *r;
1907
1908         if (!joystick)
1909                 return -ENODEV;
1910
1911         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1912         if (!r) {
1913                 dev_warn(chip->card->dev, "cannot reserve joystick port %#x\n",
1914                        JOYSTICK_ADDR);
1915                 return -EBUSY;
1916         }
1917
1918         chip->gameport = gp = gameport_allocate_port();
1919         if (!gp) {
1920                 dev_err(chip->card->dev,
1921                         "cannot allocate memory for gameport\n");
1922                 release_and_free_resource(r);
1923                 return -ENOMEM;
1924         }
1925
1926         gameport_set_name(gp, "VIA686 Gameport");
1927         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1928         gameport_set_dev_parent(gp, &chip->pci->dev);
1929         gp->io = JOYSTICK_ADDR;
1930         gameport_set_port_data(gp, r);
1931
1932         /* Enable legacy joystick port */
1933         *legacy |= VIA_FUNC_ENABLE_GAME;
1934         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1935
1936         gameport_register_port(chip->gameport);
1937
1938         return 0;
1939 }
1940
1941 static void snd_via686_free_gameport(struct via82xx *chip)
1942 {
1943         if (chip->gameport) {
1944                 struct resource *r = gameport_get_port_data(chip->gameport);
1945
1946                 gameport_unregister_port(chip->gameport);
1947                 chip->gameport = NULL;
1948                 release_and_free_resource(r);
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                 struct snd_ctl_elem_id sid;
1986                 memset(&sid, 0, sizeof(sid));
1987                 strcpy(sid.name, "PCM Playback Volume");
1988                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1989                 if (! snd_ctl_find_id(chip->card, &sid)) {
1990                         dev_info(chip->card->dev,
1991                                  "Using DXS as PCM Playback\n");
1992                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1993                         if (err < 0)
1994                                 return err;
1995                 }
1996                 else /* Using DXS when PCM emulation is enabled is really weird */
1997                 {
1998                         for (i = 0; i < 4; ++i) {
1999                                 struct snd_kcontrol *kctl;
2000
2001                                 kctl = snd_ctl_new1(
2002                                         &snd_via8233_dxs_volume_control, chip);
2003                                 if (!kctl)
2004                                         return -ENOMEM;
2005                                 kctl->id.subdevice = i;
2006                                 err = snd_ctl_add(chip->card, kctl);
2007                                 if (err < 0)
2008                                         return err;
2009                                 chip->dxs_controls[i] = kctl;
2010                         }
2011                 }
2012         }
2013         /* select spdif data slot 10/11 */
2014         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2015         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2016         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2017         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2018
2019         return 0;
2020 }
2021
2022 static int snd_via686_init_misc(struct via82xx *chip)
2023 {
2024         unsigned char legacy, legacy_cfg;
2025         int rev_h = 0;
2026
2027         legacy = chip->old_legacy;
2028         legacy_cfg = chip->old_legacy_cfg;
2029         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2030         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2031         if (chip->revision >= VIA_REV_686_H) {
2032                 rev_h = 1;
2033                 if (mpu_port >= 0x200) {        /* force MIDI */
2034                         mpu_port &= 0xfffc;
2035                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2036 #ifdef CONFIG_PM_SLEEP
2037                         chip->mpu_port_saved = mpu_port;
2038 #endif
2039                 } else {
2040                         mpu_port = pci_resource_start(chip->pci, 2);
2041                 }
2042         } else {
2043                 switch (mpu_port) {     /* force MIDI */
2044                 case 0x300:
2045                 case 0x310:
2046                 case 0x320:
2047                 case 0x330:
2048                         legacy_cfg &= ~(3 << 2);
2049                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
2050                         break;
2051                 default:                        /* no, use BIOS settings */
2052                         if (legacy & VIA_FUNC_ENABLE_MIDI)
2053                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2054                         break;
2055                 }
2056         }
2057         if (mpu_port >= 0x200 &&
2058             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2059             != NULL) {
2060                 if (rev_h)
2061                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2062                 legacy |= VIA_FUNC_ENABLE_MIDI;
2063         } else {
2064                 if (rev_h)
2065                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2066                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
2067                 mpu_port = 0;
2068         }
2069
2070         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2071         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2072         if (chip->mpu_res) {
2073                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2074                                         mpu_port, MPU401_INFO_INTEGRATED |
2075                                         MPU401_INFO_IRQ_HOOK, -1,
2076                                         &chip->rmidi) < 0) {
2077                         dev_warn(chip->card->dev,
2078                                  "unable to initialize MPU-401 at 0x%lx, skipping\n",
2079                                  mpu_port);
2080                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2081                 } else {
2082                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2083                 }
2084                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2085         }
2086
2087         snd_via686_create_gameport(chip, &legacy);
2088
2089 #ifdef CONFIG_PM_SLEEP
2090         chip->legacy_saved = legacy;
2091         chip->legacy_cfg_saved = legacy_cfg;
2092 #endif
2093
2094         return 0;
2095 }
2096
2097
2098 /*
2099  * proc interface
2100  */
2101 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2102                                   struct snd_info_buffer *buffer)
2103 {
2104         struct via82xx *chip = entry->private_data;
2105         int i;
2106
2107         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2108         for (i = 0; i < 0xa0; i += 4) {
2109                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2110         }
2111 }
2112
2113 static void snd_via82xx_proc_init(struct via82xx *chip)
2114 {
2115         snd_card_ro_proc_new(chip->card, "via82xx", chip,
2116                              snd_via82xx_proc_read);
2117 }
2118
2119 /*
2120  *
2121  */
2122
2123 static int snd_via82xx_chip_init(struct via82xx *chip)
2124 {
2125         unsigned int val;
2126         unsigned long end_time;
2127         unsigned char pval;
2128
2129 #if 0 /* broken on K7M? */
2130         if (chip->chip_type == TYPE_VIA686)
2131                 /* disable all legacy ports */
2132                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2133 #endif
2134         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2135         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2136                 /* deassert ACLink reset, force SYNC */
2137                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2138                                       VIA_ACLINK_CTRL_ENABLE |
2139                                       VIA_ACLINK_CTRL_RESET |
2140                                       VIA_ACLINK_CTRL_SYNC);
2141                 udelay(100);
2142 #if 1 /* FIXME: should we do full reset here for all chip models? */
2143                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2144                 udelay(100);
2145 #else
2146                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2147                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2148                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2149                 udelay(2);
2150 #endif
2151                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2152                 /* note - FM data out has trouble with non VRA codecs !! */
2153                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2154                 udelay(100);
2155         }
2156
2157         /* Make sure VRA is enabled, in case we didn't do a
2158          * complete codec reset, above */
2159         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2160         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2161                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2162                 /* note - FM data out has trouble with non VRA codecs !! */
2163                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2164                 udelay(100);
2165         }
2166
2167         /* wait until codec ready */
2168         end_time = jiffies + msecs_to_jiffies(750);
2169         do {
2170                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2171                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2172                         break;
2173                 schedule_timeout_uninterruptible(1);
2174         } while (time_before(jiffies, end_time));
2175
2176         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2177                 dev_err(chip->card->dev,
2178                         "AC'97 codec is not ready [0x%x]\n", val);
2179
2180 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2181         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2182                                  VIA_REG_AC97_SECONDARY_VALID |
2183                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2184         end_time = jiffies + msecs_to_jiffies(750);
2185         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2186                                  VIA_REG_AC97_SECONDARY_VALID |
2187                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2188         do {
2189                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2190                         chip->ac97_secondary = 1;
2191                         goto __ac97_ok2;
2192                 }
2193                 schedule_timeout_uninterruptible(1);
2194         } while (time_before(jiffies, end_time));
2195         /* This is ok, the most of motherboards have only one codec */
2196
2197       __ac97_ok2:
2198 #endif
2199
2200         if (chip->chip_type == TYPE_VIA686) {
2201                 /* route FM trap to IRQ, disable FM trap */
2202                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2203                 /* disable all GPI interrupts */
2204                 outl(0, VIAREG(chip, GPI_INTR));
2205         }
2206
2207         if (chip->chip_type != TYPE_VIA686) {
2208                 /* Workaround for Award BIOS bug:
2209                  * DXS channels don't work properly with VRA if MC97 is disabled.
2210                  */
2211                 struct pci_dev *pci;
2212                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2213                 if (pci) {
2214                         unsigned char data;
2215                         pci_read_config_byte(pci, 0x44, &data);
2216                         pci_write_config_byte(pci, 0x44, data | 0x40);
2217                         pci_dev_put(pci);
2218                 }
2219         }
2220
2221         if (chip->chip_type != TYPE_VIA8233A) {
2222                 int i, idx;
2223                 for (idx = 0; idx < 4; idx++) {
2224                         unsigned long port = chip->port + 0x10 * idx;
2225                         for (i = 0; i < 2; i++) {
2226                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2227                                 outb(chip->playback_volume_c[i],
2228                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2229                         }
2230                 }
2231         }
2232
2233         return 0;
2234 }
2235
2236 #ifdef CONFIG_PM_SLEEP
2237 /*
2238  * power management
2239  */
2240 static int snd_via82xx_suspend(struct device *dev)
2241 {
2242         struct snd_card *card = dev_get_drvdata(dev);
2243         struct via82xx *chip = card->private_data;
2244         int i;
2245
2246         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2247         for (i = 0; i < chip->num_devs; i++)
2248                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2249         snd_ac97_suspend(chip->ac97);
2250
2251         /* save misc values */
2252         if (chip->chip_type != TYPE_VIA686) {
2253                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2254                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2255                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2256         }
2257
2258         return 0;
2259 }
2260
2261 static int snd_via82xx_resume(struct device *dev)
2262 {
2263         struct snd_card *card = dev_get_drvdata(dev);
2264         struct via82xx *chip = card->private_data;
2265         int i;
2266
2267         snd_via82xx_chip_init(chip);
2268
2269         if (chip->chip_type == TYPE_VIA686) {
2270                 if (chip->mpu_port_saved)
2271                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2272                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2273                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2274         } else {
2275                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2276                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2277                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2278         }
2279
2280         snd_ac97_resume(chip->ac97);
2281
2282         for (i = 0; i < chip->num_devs; i++)
2283                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2284
2285         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2286         return 0;
2287 }
2288
2289 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2290 #define SND_VIA82XX_PM_OPS      &snd_via82xx_pm
2291 #else
2292 #define SND_VIA82XX_PM_OPS      NULL
2293 #endif /* CONFIG_PM_SLEEP */
2294
2295 static int snd_via82xx_free(struct via82xx *chip)
2296 {
2297         unsigned int i;
2298
2299         if (chip->irq < 0)
2300                 goto __end_hw;
2301         /* disable interrupts */
2302         for (i = 0; i < chip->num_devs; i++)
2303                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2304
2305         if (chip->irq >= 0)
2306                 free_irq(chip->irq, chip);
2307  __end_hw:
2308         release_and_free_resource(chip->mpu_res);
2309         pci_release_regions(chip->pci);
2310
2311         if (chip->chip_type == TYPE_VIA686) {
2312                 snd_via686_free_gameport(chip);
2313                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2314                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2315         }
2316         pci_disable_device(chip->pci);
2317         kfree(chip);
2318         return 0;
2319 }
2320
2321 static int snd_via82xx_dev_free(struct snd_device *device)
2322 {
2323         struct via82xx *chip = device->device_data;
2324         return snd_via82xx_free(chip);
2325 }
2326
2327 static int snd_via82xx_create(struct snd_card *card,
2328                               struct pci_dev *pci,
2329                               int chip_type,
2330                               int revision,
2331                               unsigned int ac97_clock,
2332                               struct via82xx **r_via)
2333 {
2334         struct via82xx *chip;
2335         int err;
2336         static const struct snd_device_ops ops = {
2337                 .dev_free =     snd_via82xx_dev_free,
2338         };
2339
2340         if ((err = pci_enable_device(pci)) < 0)
2341                 return err;
2342
2343         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2344                 pci_disable_device(pci);
2345                 return -ENOMEM;
2346         }
2347
2348         chip->chip_type = chip_type;
2349         chip->revision = revision;
2350
2351         spin_lock_init(&chip->reg_lock);
2352         spin_lock_init(&chip->rates[0].lock);
2353         spin_lock_init(&chip->rates[1].lock);
2354         chip->card = card;
2355         chip->pci = pci;
2356         chip->irq = -1;
2357
2358         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2359         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2360         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2361                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2362
2363         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2364                 kfree(chip);
2365                 pci_disable_device(pci);
2366                 return err;
2367         }
2368         chip->port = pci_resource_start(pci, 0);
2369         if (request_irq(pci->irq,
2370                         chip_type == TYPE_VIA8233 ?
2371                         snd_via8233_interrupt : snd_via686_interrupt,
2372                         IRQF_SHARED,
2373                         KBUILD_MODNAME, chip)) {
2374                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2375                 snd_via82xx_free(chip);
2376                 return -EBUSY;
2377         }
2378         chip->irq = pci->irq;
2379         card->sync_irq = chip->irq;
2380         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2381                 chip->ac97_clock = ac97_clock;
2382
2383         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2384                 snd_via82xx_free(chip);
2385                 return err;
2386         }
2387
2388         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2389                 snd_via82xx_free(chip);
2390                 return err;
2391         }
2392
2393         /* The 8233 ac97 controller does not implement the master bit
2394          * in the pci command register. IMHO this is a violation of the PCI spec.
2395          * We call pci_set_master here because it does not hurt. */
2396         pci_set_master(pci);
2397
2398         *r_via = chip;
2399         return 0;
2400 }
2401
2402 struct via823x_info {
2403         int revision;
2404         char *name;
2405         int type;
2406 };
2407 static const struct via823x_info via823x_cards[] = {
2408         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2409         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2410         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2411         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2412         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2413         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2414         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2415 };
2416
2417 /*
2418  * auto detection of DXS channel supports.
2419  */
2420
2421 static const struct snd_pci_quirk dxs_allowlist[] = {
2422         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2423         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2424         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2425         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2426         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2427         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2428         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2429         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2430         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2431         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2432         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2433         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2434         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2435         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2436         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2437         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2438         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2439         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2440         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2441         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2442         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2443         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2444         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2445         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2446         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2447         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2448         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2449         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2450         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2451         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2452         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2453         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2454         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2455         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2456         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2457         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2458         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2459         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2460         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2461         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2462         { } /* terminator */
2463 };
2464
2465 static int check_dxs_list(struct pci_dev *pci, int revision)
2466 {
2467         const struct snd_pci_quirk *w;
2468
2469         w = snd_pci_quirk_lookup(pci, dxs_allowlist);
2470         if (w) {
2471                 dev_dbg(&pci->dev, "DXS allow list for %s found\n",
2472                             snd_pci_quirk_name(w));
2473                 return w->value;
2474         }
2475
2476         /* for newer revision, default to DXS_SRC */
2477         if (revision >= VIA_REV_8235)
2478                 return VIA_DXS_SRC;
2479
2480         /*
2481          * not detected, try 48k rate only to be sure.
2482          */
2483         dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n");
2484         dev_info(&pci->dev, "         Please try dxs_support=5 option\n");
2485         dev_info(&pci->dev, "         and report if it works on your machine.\n");
2486         dev_info(&pci->dev, "         For more details, read ALSA-Configuration.txt.\n");
2487         return VIA_DXS_48K;
2488 };
2489
2490 static int snd_via82xx_probe(struct pci_dev *pci,
2491                              const struct pci_device_id *pci_id)
2492 {
2493         struct snd_card *card;
2494         struct via82xx *chip;
2495         int chip_type = 0, card_type;
2496         unsigned int i;
2497         int err;
2498
2499         err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2500         if (err < 0)
2501                 return err;
2502
2503         card_type = pci_id->driver_data;
2504         switch (card_type) {
2505         case TYPE_CARD_VIA686:
2506                 strcpy(card->driver, "VIA686A");
2507                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2508                 chip_type = TYPE_VIA686;
2509                 break;
2510         case TYPE_CARD_VIA8233:
2511                 chip_type = TYPE_VIA8233;
2512                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2513                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2514                         if (pci->revision == via823x_cards[i].revision) {
2515                                 chip_type = via823x_cards[i].type;
2516                                 strcpy(card->shortname, via823x_cards[i].name);
2517                                 break;
2518                         }
2519                 }
2520                 if (chip_type != TYPE_VIA8233A) {
2521                         if (dxs_support == VIA_DXS_AUTO)
2522                                 dxs_support = check_dxs_list(pci, pci->revision);
2523                         /* force to use VIA8233 or 8233A model according to
2524                          * dxs_support module option
2525                          */
2526                         if (dxs_support == VIA_DXS_DISABLE)
2527                                 chip_type = TYPE_VIA8233A;
2528                         else
2529                                 chip_type = TYPE_VIA8233;
2530                 }
2531                 if (chip_type == TYPE_VIA8233A)
2532                         strcpy(card->driver, "VIA8233A");
2533                 else if (pci->revision >= VIA_REV_8237)
2534                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2535                 else
2536                         strcpy(card->driver, "VIA8233");
2537                 break;
2538         default:
2539                 dev_err(card->dev, "invalid card type %d\n", card_type);
2540                 err = -EINVAL;
2541                 goto __error;
2542         }
2543
2544         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2545                                       ac97_clock, &chip)) < 0)
2546                 goto __error;
2547         card->private_data = chip;
2548         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2549                 goto __error;
2550
2551         if (chip_type == TYPE_VIA686) {
2552                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2553                     (err = snd_via686_init_misc(chip)) < 0)
2554                         goto __error;
2555         } else {
2556                 if (chip_type == TYPE_VIA8233A) {
2557                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2558                                 goto __error;
2559                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2560                 } else {
2561                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2562                                 goto __error;
2563                         if (dxs_support == VIA_DXS_48K)
2564                                 chip->dxs_fixed = 1;
2565                         else if (dxs_support == VIA_DXS_NO_VRA)
2566                                 chip->no_vra = 1;
2567                         else if (dxs_support == VIA_DXS_SRC) {
2568                                 chip->no_vra = 1;
2569                                 chip->dxs_src = 1;
2570                         }
2571                 }
2572                 if ((err = snd_via8233_init_misc(chip)) < 0)
2573                         goto __error;
2574         }
2575
2576         /* disable interrupts */
2577         for (i = 0; i < chip->num_devs; i++)
2578                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2579
2580         snprintf(card->longname, sizeof(card->longname),
2581                  "%s with %s at %#lx, irq %d", card->shortname,
2582                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2583
2584         snd_via82xx_proc_init(chip);
2585
2586         if ((err = snd_card_register(card)) < 0) {
2587                 snd_card_free(card);
2588                 return err;
2589         }
2590         pci_set_drvdata(pci, card);
2591         return 0;
2592
2593  __error:
2594         snd_card_free(card);
2595         return err;
2596 }
2597
2598 static void snd_via82xx_remove(struct pci_dev *pci)
2599 {
2600         snd_card_free(pci_get_drvdata(pci));
2601 }
2602
2603 static struct pci_driver via82xx_driver = {
2604         .name = KBUILD_MODNAME,
2605         .id_table = snd_via82xx_ids,
2606         .probe = snd_via82xx_probe,
2607         .remove = snd_via82xx_remove,
2608         .driver = {
2609                 .pm = SND_VIA82XX_PM_OPS,
2610         },
2611 };
2612
2613 module_pci_driver(via82xx_driver);