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                 val = snd_via82xx_codec_xread(chip);
 519                 if (!(val & VIA_REG_AC97_BUSY))
 520                         return val & 0xffff;
 521         }
 522         dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
 523                    secondary, snd_via82xx_codec_xread(chip));
 524         return -EIO;
 525 }
 526
 527 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
 528 {
 529         unsigned int timeout = 1000;    /* 1ms */
 530         unsigned int val, val1;
 531         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
 532                                          VIA_REG_AC97_SECONDARY_VALID;
 533
 534         while (timeout-- > 0) {
 535                 val = snd_via82xx_codec_xread(chip);
 536                 val1 = val & (VIA_REG_AC97_BUSY | stat);
 537                 if (val1 == stat)
 538                         return val & 0xffff;
 539                 udelay(1);
 540         }
 541         return -EIO;
 542 }
 543
 544 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
 545 {
 546         struct via82xx *chip = ac97->private_data;
 547         __always_unused int err;
 548         err = snd_via82xx_codec_ready(chip, ac97->num);
 549         /* here we need to wait fairly for long time.. */
 550         if (!nodelay)
 551                 msleep(500);
 552 }
 553
 554 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
 555                                     unsigned short reg,
 556                                     unsigned short val)
 557 {
 558         struct via82xx *chip = ac97->private_data;
 559         unsigned int xval;
 560
 561         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
 562         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
 563         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
 564         xval |= val << VIA_REG_AC97_DATA_SHIFT;
 565         snd_via82xx_codec_xwrite(chip, xval);
 566         snd_via82xx_codec_ready(chip, ac97->num);
 567 }
 568
 569 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
 570 {
 571         struct via82xx *chip = ac97->private_data;
 572         unsigned int xval, val = 0xffff;
 573         int again = 0;
 574
 575         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
 576         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
 577         xval |= VIA_REG_AC97_READ;
 578         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
 579         while (1) {
 580                 if (again++ > 3) {
 581                         dev_err(chip->card->dev,
 582                                 "codec_read: codec %i is not valid [0x%x]\n",
 583                                    ac97->num, snd_via82xx_codec_xread(chip));
 584                         return 0xffff;
 585                 }
 586                 snd_via82xx_codec_xwrite(chip, xval);
 587                 udelay (20);
 588                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
 589                         udelay(25);
 590                         val = snd_via82xx_codec_xread(chip);
 591                         break;
 592                 }
 593         }
 594         return val & 0xffff;
 595 }
 596
 597 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
 598 {
 599         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
 600              VIADEV_REG(viadev, OFFSET_CONTROL));
 601         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
 602         udelay(50);
 603         /* disable interrupts */
 604         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
 605         /* clear interrupts */
 606         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
 607         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
 608         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
 609         viadev->lastpos = 0;
 610         viadev->hwptr_done = 0;
 611 }
 612
 613
 614 /*
 615  *  Interrupt handler
 616  *  Used for 686 and 8233A
 617  */
 618 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
 619 {
 620         struct via82xx *chip = dev_id;
 621         unsigned int status;
 622         unsigned int i;
 623
 624         status = inl(VIAREG(chip, SGD_SHADOW));
 625         if (! (status & chip->intr_mask)) {
 626                 if (chip->rmidi)
 627                         /* check mpu401 interrupt */
 628                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
 629                 return IRQ_NONE;
 630         }
 631
 632         /* check status for each stream */
 633         spin_lock(&chip->reg_lock);
 634         for (i = 0; i < chip->num_devs; i++) {
 635                 struct viadev *viadev = &chip->devs[i];
 636                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 637                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
 638                         continue;
 639                 if (viadev->substream && viadev->running) {
 640                         /*
 641                          * Update hwptr_done based on 'period elapsed'
 642                          * interrupts. We'll use it, when the chip returns 0
 643                          * for OFFSET_CURR_COUNT.
 644                          */
 645                         if (c_status & VIA_REG_STAT_EOL)
 646                                 viadev->hwptr_done = 0;
 647                         else
 648                                 viadev->hwptr_done += viadev->fragsize;
 649                         viadev->in_interrupt = c_status;
 650                         spin_unlock(&chip->reg_lock);
 651                         snd_pcm_period_elapsed(viadev->substream);
 652                         spin_lock(&chip->reg_lock);
 653                         viadev->in_interrupt = 0;
 654                 }
 655                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 656         }
 657         spin_unlock(&chip->reg_lock);
 658         return IRQ_HANDLED;
 659 }
 660
 661 /*
 662  *  Interrupt handler
 663  */
 664 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
 665 {
 666         struct via82xx *chip = dev_id;
 667         unsigned int status;
 668         unsigned int i;
 669         int irqreturn = 0;
 670
 671         /* check status for each stream */
 672         spin_lock(&chip->reg_lock);
 673         status = inl(VIAREG(chip, SGD_SHADOW));
 674
 675         for (i = 0; i < chip->num_devs; i++) {
 676                 struct viadev *viadev = &chip->devs[i];
 677                 struct snd_pcm_substream *substream;
 678                 unsigned char c_status, shadow_status;
 679
 680                 shadow_status = (status >> viadev->shadow_shift) &
 681                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
 682                          VIA_REG_STAT_FLAG);
 683                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
 684                 if (!c_status)
 685                         continue;
 686
 687                 substream = viadev->substream;
 688                 if (substream && viadev->running) {
 689                         /*
 690                          * Update hwptr_done based on 'period elapsed'
 691                          * interrupts. We'll use it, when the chip returns 0
 692                          * for OFFSET_CURR_COUNT.
 693                          */
 694                         if (c_status & VIA_REG_STAT_EOL)
 695                                 viadev->hwptr_done = 0;
 696                         else
 697                                 viadev->hwptr_done += viadev->fragsize;
 698                         viadev->in_interrupt = c_status;
 699                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
 700                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
 701                         spin_unlock(&chip->reg_lock);
 702
 703                         snd_pcm_period_elapsed(substream);
 704
 705                         spin_lock(&chip->reg_lock);
 706                         viadev->in_interrupt = 0;
 707                 }
 708                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
 709                 irqreturn = 1;
 710         }
 711         spin_unlock(&chip->reg_lock);
 712         return IRQ_RETVAL(irqreturn);
 713 }
 714
 715 /*
 716  *  PCM callbacks
 717  */
 718
 719 /*
 720  * trigger callback
 721  */
 722 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 723 {
 724         struct via82xx *chip = snd_pcm_substream_chip(substream);
 725         struct viadev *viadev = substream->runtime->private_data;
 726         unsigned char val;
 727
 728         if (chip->chip_type != TYPE_VIA686)
 729                 val = VIA_REG_CTRL_INT;
 730         else
 731                 val = 0;
 732         switch (cmd) {
 733         case SNDRV_PCM_TRIGGER_START:
 734         case SNDRV_PCM_TRIGGER_RESUME:
 735                 val |= VIA_REG_CTRL_START;
 736                 viadev->running = 1;
 737                 break;
 738         case SNDRV_PCM_TRIGGER_STOP:
 739         case SNDRV_PCM_TRIGGER_SUSPEND:
 740                 val = VIA_REG_CTRL_TERMINATE;
 741                 viadev->running = 0;
 742                 break;
 743         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 744                 val |= VIA_REG_CTRL_PAUSE;
 745                 viadev->running = 0;
 746                 break;
 747         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 748                 viadev->running = 1;
 749                 break;
 750         default:
 751                 return -EINVAL;
 752         }
 753         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
 754         if (cmd == SNDRV_PCM_TRIGGER_STOP)
 755                 snd_via82xx_channel_reset(chip, viadev);
 756         return 0;
 757 }
 758
 759
 760 /*
 761  * pointer callbacks
 762  */
 763
 764 /*
 765  * calculate the linear position at the given sg-buffer index and the rest count
 766  */
 767
 768 #define check_invalid_pos(viadev,pos) \
 769         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
 770                                      viadev->lastpos < viadev->bufsize2))
 771
 772 static inline unsigned int calc_linear_pos(struct via82xx *chip,
 773                                            struct viadev *viadev,
 774                                            unsigned int idx,
 775                                            unsigned int count)
 776 {
 777         unsigned int size, base, res;
 778
 779         size = viadev->idx_table[idx].size;
 780         base = viadev->idx_table[idx].offset;
 781         res = base + size - count;
 782         if (res >= viadev->bufsize)
 783                 res -= viadev->bufsize;
 784
 785         /* check the validity of the calculated position */
 786         if (size < count) {
 787                 dev_dbg(chip->card->dev,
 788                         "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
 789                            (int)size, (int)count);
 790                 res = viadev->lastpos;
 791         } else {
 792                 if (! count) {
 793                         /* Some mobos report count = 0 on the DMA boundary,
 794                          * i.e. count = size indeed.
 795                          * Let's check whether this step is above the expected size.
 796                          */
 797                         int delta = res - viadev->lastpos;
 798                         if (delta < 0)
 799                                 delta += viadev->bufsize;
 800                         if ((unsigned int)delta > viadev->fragsize)
 801                                 res = base;
 802                 }
 803                 if (check_invalid_pos(viadev, res)) {
 804 #ifdef POINTER_DEBUG
 805                         dev_dbg(chip->card->dev,
 806                                 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
 807                                 idx, viadev->tbl_entries,
 808                                viadev->lastpos, viadev->bufsize2,
 809                                viadev->idx_table[idx].offset,
 810                                viadev->idx_table[idx].size, count);
 811 #endif
 812                         /* count register returns full size when end of buffer is reached */
 813                         res = base + size;
 814                         if (check_invalid_pos(viadev, res)) {
 815                                 dev_dbg(chip->card->dev,
 816                                         "invalid via82xx_cur_ptr (2), using last valid pointer\n");
 817                                 res = viadev->lastpos;
 818                         }
 819                 }
 820         }
 821         return res;
 822 }
 823
 824 /*
 825  * get the current pointer on via686
 826  */
 827 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
 828 {
 829         struct via82xx *chip = snd_pcm_substream_chip(substream);
 830         struct viadev *viadev = substream->runtime->private_data;
 831         unsigned int idx, ptr, count, res;
 832
 833         if (snd_BUG_ON(!viadev->tbl_entries))
 834                 return 0;
 835         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
 836                 return 0;
 837
 838         spin_lock(&chip->reg_lock);
 839         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
 840         /* The via686a does not have the current index register,
 841          * so we need to calculate the index from CURR_PTR.
 842          */
 843         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
 844         if (ptr <= (unsigned int)viadev->table.addr)
 845                 idx = 0;
 846         else /* CURR_PTR holds the address + 8 */
 847                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
 848         res = calc_linear_pos(chip, viadev, idx, count);
 849         viadev->lastpos = res; /* remember the last position */
 850         spin_unlock(&chip->reg_lock);
 851
 852         return bytes_to_frames(substream->runtime, res);
 853 }
 854
 855 /*
 856  * get the current pointer on via823x
 857  */
 858 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
 859 {
 860         struct via82xx *chip = snd_pcm_substream_chip(substream);
 861         struct viadev *viadev = substream->runtime->private_data;
 862         unsigned int idx, count, res;
 863         int status;
 864
 865         if (snd_BUG_ON(!viadev->tbl_entries))
 866                 return 0;
 867
 868         spin_lock(&chip->reg_lock);
 869         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
 870         status = viadev->in_interrupt;
 871         if (!status)
 872                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
 873
 874         /* An apparent bug in the 8251 is worked around by sending a
 875          * REG_CTRL_START. */
 876         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
 877                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
 878
 879         if (!(status & VIA_REG_STAT_ACTIVE)) {
 880                 res = 0;
 881                 goto unlock;
 882         }
 883         if (count & 0xffffff) {
 884                 idx = count >> 24;
 885                 if (idx >= viadev->tbl_entries) {
 886 #ifdef POINTER_DEBUG
 887                         dev_dbg(chip->card->dev,
 888                                 "fail: invalid idx = %i/%i\n", idx,
 889                                viadev->tbl_entries);
 890 #endif
 891                         res = viadev->lastpos;
 892                 } else {
 893                         count &= 0xffffff;
 894                         res = calc_linear_pos(chip, viadev, idx, count);
 895                 }
 896         } else {
 897                 res = viadev->hwptr_done;
 898                 if (!viadev->in_interrupt) {
 899                         if (status & VIA_REG_STAT_EOL) {
 900                                 res = 0;
 901                         } else
 902                                 if (status & VIA_REG_STAT_FLAG) {
 903                                         res += viadev->fragsize;
 904                                 }
 905                 }
 906         }
 907 unlock:
 908         viadev->lastpos = res;
 909         spin_unlock(&chip->reg_lock);
 910
 911         return bytes_to_frames(substream->runtime, res);
 912 }
 913
 914
 915 /*
 916  * hw_params callback:
 917  * allocate the buffer and build up the buffer description table
 918  */
 919 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
 920                                  struct snd_pcm_hw_params *hw_params)
 921 {
 922         struct via82xx *chip = snd_pcm_substream_chip(substream);
 923         struct viadev *viadev = substream->runtime->private_data;
 924
 925         return build_via_table(viadev, substream, chip->pci,
 926                                params_periods(hw_params),
 927                                params_period_bytes(hw_params));
 928 }
 929
 930 /*
 931  * hw_free callback:
 932  * clean up the buffer description table and release the buffer
 933  */
 934 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
 935 {
 936         struct via82xx *chip = snd_pcm_substream_chip(substream);
 937         struct viadev *viadev = substream->runtime->private_data;
 938
 939         clean_via_table(viadev, substream, chip->pci);
 940         return 0;
 941 }
 942
 943
 944 /*
 945  * set up the table pointer
 946  */
 947 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
 948 {
 949         snd_via82xx_codec_ready(chip, 0);
 950         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
 951         udelay(20);
 952         snd_via82xx_codec_ready(chip, 0);
 953 }
 954
 955 /*
 956  * prepare callback for playback and capture on via686
 957  */
 958 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
 959                                 struct snd_pcm_runtime *runtime)
 960 {
 961         snd_via82xx_channel_reset(chip, viadev);
 962         /* this must be set after channel_reset */
 963         snd_via82xx_set_table_ptr(chip, viadev);
 964         outb(VIA_REG_TYPE_AUTOSTART |
 965              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
 966              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
 967              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
 968              VIA_REG_TYPE_INT_EOL |
 969              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
 970 }
 971
 972 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
 973 {
 974         struct via82xx *chip = snd_pcm_substream_chip(substream);
 975         struct viadev *viadev = substream->runtime->private_data;
 976         struct snd_pcm_runtime *runtime = substream->runtime;
 977
 978         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
 979         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
 980         via686_setup_format(chip, viadev, runtime);
 981         return 0;
 982 }
 983
 984 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
 985 {
 986         struct via82xx *chip = snd_pcm_substream_chip(substream);
 987         struct viadev *viadev = substream->runtime->private_data;
 988         struct snd_pcm_runtime *runtime = substream->runtime;
 989
 990         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
 991         via686_setup_format(chip, viadev, runtime);
 992         return 0;
 993 }
 994
 995 /*
 996  * lock the current rate
 997  */
 998 static int via_lock_rate(struct via_rate_lock *rec, int rate)
 999 {
1000         int changed = 0;
1001
1002         spin_lock_irq(&rec->lock);
1003         if (rec->rate != rate) {
1004                 if (rec->rate && rec->used > 1) /* already set */
1005                         changed = -EINVAL;
1006                 else {
1007                         rec->rate = rate;
1008                         changed = 1;
1009                 }
1010         }
1011         spin_unlock_irq(&rec->lock);
1012         return changed;
1013 }
1014
1015 /*
1016  * prepare callback for DSX playback on via823x
1017  */
1018 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1019 {
1020         struct via82xx *chip = snd_pcm_substream_chip(substream);
1021         struct viadev *viadev = substream->runtime->private_data;
1022         struct snd_pcm_runtime *runtime = substream->runtime;
1023         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1024         int rate_changed;
1025         u32 rbits;
1026
1027         rate_changed = via_lock_rate(&chip->rates[0], ac97_rate);
1028         if (rate_changed < 0)
1029                 return rate_changed;
1030         if (rate_changed)
1031                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1032                                   chip->no_vra ? 48000 : runtime->rate);
1033         if (chip->spdif_on && viadev->reg_offset == 0x30)
1034                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1035
1036         if (runtime->rate == 48000)
1037                 rbits = 0xfffff;
1038         else
1039                 rbits = (0x100000 / 48000) * runtime->rate +
1040                         ((0x100000 % 48000) * runtime->rate) / 48000;
1041         snd_BUG_ON(rbits & ~0xfffff);
1042         snd_via82xx_channel_reset(chip, viadev);
1043         snd_via82xx_set_table_ptr(chip, viadev);
1044         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1045              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1046         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1047              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1048         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1049              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1050              rbits | /* rate */
1051              0xff000000,    /* STOP index is never reached */
1052              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1053         udelay(20);
1054         snd_via82xx_codec_ready(chip, 0);
1055         return 0;
1056 }
1057
1058 /*
1059  * prepare callback for multi-channel playback on via823x
1060  */
1061 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1062 {
1063         struct via82xx *chip = snd_pcm_substream_chip(substream);
1064         struct viadev *viadev = substream->runtime->private_data;
1065         struct snd_pcm_runtime *runtime = substream->runtime;
1066         unsigned int slots;
1067         int fmt;
1068
1069         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1070                 return -EINVAL;
1071         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1072         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1073         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1074         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1075         snd_via82xx_channel_reset(chip, viadev);
1076         snd_via82xx_set_table_ptr(chip, viadev);
1077
1078         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1079                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1080         fmt |= runtime->channels << 4;
1081         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1082 #if 0
1083         if (chip->revision == VIA_REV_8233A)
1084                 slots = 0;
1085         else
1086 #endif
1087         {
1088                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1089                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1090                 switch (runtime->channels) {
1091                 case 1: slots = (1<<0) | (1<<4); break;
1092                 case 2: slots = (1<<0) | (2<<4); break;
1093                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1094                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1095                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1096                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1097                 default: slots = 0; break;
1098                 }
1099         }
1100         /* STOP index is never reached */
1101         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1102         udelay(20);
1103         snd_via82xx_codec_ready(chip, 0);
1104         return 0;
1105 }
1106
1107 /*
1108  * prepare callback for capture on via823x
1109  */
1110 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1111 {
1112         struct via82xx *chip = snd_pcm_substream_chip(substream);
1113         struct viadev *viadev = substream->runtime->private_data;
1114         struct snd_pcm_runtime *runtime = substream->runtime;
1115
1116         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1117                 return -EINVAL;
1118         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1119         snd_via82xx_channel_reset(chip, viadev);
1120         snd_via82xx_set_table_ptr(chip, viadev);
1121         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1122         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1123              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1124              0xff000000,    /* STOP index is never reached */
1125              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1126         udelay(20);
1127         snd_via82xx_codec_ready(chip, 0);
1128         return 0;
1129 }
1130
1131
1132 /*
1133  * pcm hardware definition, identical for both playback and capture
1134  */
1135 static const struct snd_pcm_hardware snd_via82xx_hw =
1136 {
1137         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1138                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1139                                  SNDRV_PCM_INFO_MMAP_VALID |
1140                                  /* SNDRV_PCM_INFO_RESUME | */
1141                                  SNDRV_PCM_INFO_PAUSE),
1142         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1143         .rates =                SNDRV_PCM_RATE_48000,
1144         .rate_min =             48000,
1145         .rate_max =             48000,
1146         .channels_min =         1,
1147         .channels_max =         2,
1148         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1149         .period_bytes_min =     32,
1150         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1151         .periods_min =          2,
1152         .periods_max =          VIA_TABLE_SIZE / 2,
1153         .fifo_size =            0,
1154 };
1155
1156
1157 /*
1158  * open callback skeleton
1159  */
1160 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1161                                 struct snd_pcm_substream *substream)
1162 {
1163         struct snd_pcm_runtime *runtime = substream->runtime;
1164         int err;
1165         struct via_rate_lock *ratep;
1166         bool use_src = false;
1167
1168         runtime->hw = snd_via82xx_hw;
1169
1170         /* set the hw rate condition */
1171         ratep = &chip->rates[viadev->direction];
1172         spin_lock_irq(&ratep->lock);
1173         ratep->used++;
1174         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1175                 /* DXS#3 and spdif is on */
1176                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1177                 snd_pcm_limit_hw_rates(runtime);
1178         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1179                 /* fixed DXS playback rate */
1180                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1181                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1182         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1183                 /* use full SRC capabilities of DXS */
1184                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1185                                      SNDRV_PCM_RATE_8000_48000);
1186                 runtime->hw.rate_min = 8000;
1187                 runtime->hw.rate_max = 48000;
1188                 use_src = true;
1189         } else if (! ratep->rate) {
1190                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1191                 runtime->hw.rates = chip->ac97->rates[idx];
1192                 snd_pcm_limit_hw_rates(runtime);
1193         } else {
1194                 /* a fixed rate */
1195                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1196                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1197         }
1198         spin_unlock_irq(&ratep->lock);
1199
1200         /* we may remove following constaint when we modify table entries
1201            in interrupt */
1202         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
1203         if (err < 0)
1204                 return err;
1205
1206         if (use_src) {
1207                 err = snd_pcm_hw_rule_noresample(runtime, 48000);
1208                 if (err < 0)
1209                         return err;
1210         }
1211
1212         runtime->private_data = viadev;
1213         viadev->substream = substream;
1214
1215         return 0;
1216 }
1217
1218
1219 /*
1220  * open callback for playback on via686
1221  */
1222 static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1223 {
1224         struct via82xx *chip = snd_pcm_substream_chip(substream);
1225         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1226         int err;
1227
1228         err = snd_via82xx_pcm_open(chip, viadev, substream);
1229         if (err < 0)
1230                 return err;
1231         return 0;
1232 }
1233
1234 /*
1235  * open callback for playback on via823x DXS
1236  */
1237 static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1238 {
1239         struct via82xx *chip = snd_pcm_substream_chip(substream);
1240         struct viadev *viadev;
1241         unsigned int stream;
1242         int err;
1243
1244         viadev = &chip->devs[chip->playback_devno + substream->number];
1245         err = snd_via82xx_pcm_open(chip, viadev, substream);
1246         if (err < 0)
1247                 return err;
1248         stream = viadev->reg_offset / 0x10;
1249         if (chip->dxs_controls[stream]) {
1250                 chip->playback_volume[stream][0] =
1251                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1252                 chip->playback_volume[stream][1] =
1253                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1254                 chip->dxs_controls[stream]->vd[0].access &=
1255                         ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1256                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1257                                SNDRV_CTL_EVENT_MASK_INFO,
1258                                &chip->dxs_controls[stream]->id);
1259         }
1260         return 0;
1261 }
1262
1263 /*
1264  * open callback for playback on via823x multi-channel
1265  */
1266 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1267 {
1268         struct via82xx *chip = snd_pcm_substream_chip(substream);
1269         struct viadev *viadev = &chip->devs[chip->multi_devno];
1270         int err;
1271         /* channels constraint for VIA8233A
1272          * 3 and 5 channels are not supported
1273          */
1274         static const unsigned int channels[] = {
1275                 1, 2, 4, 6
1276         };
1277         static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1278                 .count = ARRAY_SIZE(channels),
1279                 .list = channels,
1280                 .mask = 0,
1281         };
1282
1283         err = snd_via82xx_pcm_open(chip, viadev, substream);
1284         if (err < 0)
1285                 return err;
1286         substream->runtime->hw.channels_max = 6;
1287         if (chip->revision == VIA_REV_8233A)
1288                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1289                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1290                                            &hw_constraints_channels);
1291         return 0;
1292 }
1293
1294 /*
1295  * open callback for capture on via686 and via823x
1296  */
1297 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1298 {
1299         struct via82xx *chip = snd_pcm_substream_chip(substream);
1300         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1301
1302         return snd_via82xx_pcm_open(chip, viadev, substream);
1303 }
1304
1305 /*
1306  * close callback
1307  */
1308 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1309 {
1310         struct via82xx *chip = snd_pcm_substream_chip(substream);
1311         struct viadev *viadev = substream->runtime->private_data;
1312         struct via_rate_lock *ratep;
1313
1314         /* release the rate lock */
1315         ratep = &chip->rates[viadev->direction];
1316         spin_lock_irq(&ratep->lock);
1317         ratep->used--;
1318         if (! ratep->used)
1319                 ratep->rate = 0;
1320         spin_unlock_irq(&ratep->lock);
1321         if (! ratep->rate) {
1322                 if (! viadev->direction) {
1323                         snd_ac97_update_power(chip->ac97,
1324                                               AC97_PCM_FRONT_DAC_RATE, 0);
1325                         snd_ac97_update_power(chip->ac97,
1326                                               AC97_PCM_SURR_DAC_RATE, 0);
1327                         snd_ac97_update_power(chip->ac97,
1328                                               AC97_PCM_LFE_DAC_RATE, 0);
1329                 } else
1330                         snd_ac97_update_power(chip->ac97,
1331                                               AC97_PCM_LR_ADC_RATE, 0);
1332         }
1333         viadev->substream = NULL;
1334         return 0;
1335 }
1336
1337 static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1338 {
1339         struct via82xx *chip = snd_pcm_substream_chip(substream);
1340         struct viadev *viadev = substream->runtime->private_data;
1341         unsigned int stream;
1342
1343         stream = viadev->reg_offset / 0x10;
1344         if (chip->dxs_controls[stream]) {
1345                 chip->dxs_controls[stream]->vd[0].access |=
1346                         SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1347                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1348                                &chip->dxs_controls[stream]->id);
1349         }
1350         return snd_via82xx_pcm_close(substream);
1351 }
1352
1353
1354 /* via686 playback callbacks */
1355 static const struct snd_pcm_ops snd_via686_playback_ops = {
1356         .open =         snd_via686_playback_open,
1357         .close =        snd_via82xx_pcm_close,
1358         .hw_params =    snd_via82xx_hw_params,
1359         .hw_free =      snd_via82xx_hw_free,
1360         .prepare =      snd_via686_playback_prepare,
1361         .trigger =      snd_via82xx_pcm_trigger,
1362         .pointer =      snd_via686_pcm_pointer,
1363 };
1364
1365 /* via686 capture callbacks */
1366 static const struct snd_pcm_ops snd_via686_capture_ops = {
1367         .open =         snd_via82xx_capture_open,
1368         .close =        snd_via82xx_pcm_close,
1369         .hw_params =    snd_via82xx_hw_params,
1370         .hw_free =      snd_via82xx_hw_free,
1371         .prepare =      snd_via686_capture_prepare,
1372         .trigger =      snd_via82xx_pcm_trigger,
1373         .pointer =      snd_via686_pcm_pointer,
1374 };
1375
1376 /* via823x DSX playback callbacks */
1377 static const struct snd_pcm_ops snd_via8233_playback_ops = {
1378         .open =         snd_via8233_playback_open,
1379         .close =        snd_via8233_playback_close,
1380         .hw_params =    snd_via82xx_hw_params,
1381         .hw_free =      snd_via82xx_hw_free,
1382         .prepare =      snd_via8233_playback_prepare,
1383         .trigger =      snd_via82xx_pcm_trigger,
1384         .pointer =      snd_via8233_pcm_pointer,
1385 };
1386
1387 /* via823x multi-channel playback callbacks */
1388 static const struct snd_pcm_ops snd_via8233_multi_ops = {
1389         .open =         snd_via8233_multi_open,
1390         .close =        snd_via82xx_pcm_close,
1391         .hw_params =    snd_via82xx_hw_params,
1392         .hw_free =      snd_via82xx_hw_free,
1393         .prepare =      snd_via8233_multi_prepare,
1394         .trigger =      snd_via82xx_pcm_trigger,
1395         .pointer =      snd_via8233_pcm_pointer,
1396 };
1397
1398 /* via823x capture callbacks */
1399 static const struct snd_pcm_ops snd_via8233_capture_ops = {
1400         .open =         snd_via82xx_capture_open,
1401         .close =        snd_via82xx_pcm_close,
1402         .hw_params =    snd_via82xx_hw_params,
1403         .hw_free =      snd_via82xx_hw_free,
1404         .prepare =      snd_via8233_capture_prepare,
1405         .trigger =      snd_via82xx_pcm_trigger,
1406         .pointer =      snd_via8233_pcm_pointer,
1407 };
1408
1409
1410 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1411                         int shadow_pos, int direction)
1412 {
1413         chip->devs[idx].reg_offset = reg_offset;
1414         chip->devs[idx].shadow_shift = shadow_pos * 4;
1415         chip->devs[idx].direction = direction;
1416         chip->devs[idx].port = chip->port + reg_offset;
1417 }
1418
1419 /*
1420  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1421  */
1422 static int snd_via8233_pcm_new(struct via82xx *chip)
1423 {
1424         struct snd_pcm *pcm;
1425         struct snd_pcm_chmap *chmap;
1426         int i, err;
1427
1428         chip->playback_devno = 0;       /* x 4 */
1429         chip->multi_devno = 4;          /* x 1 */
1430         chip->capture_devno = 5;        /* x 2 */
1431         chip->num_devs = 7;
1432         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1433
1434         /* PCM #0:  4 DSX playbacks and 1 capture */
1435         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1436         if (err < 0)
1437                 return err;
1438         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1439         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1440         pcm->private_data = chip;
1441         strcpy(pcm->name, chip->card->shortname);
1442         chip->pcms[0] = pcm;
1443         /* set up playbacks */
1444         for (i = 0; i < 4; i++)
1445                 init_viadev(chip, i, 0x10 * i, i, 0);
1446         /* capture */
1447         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1448
1449         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1450                                        &chip->pci->dev,
1451                                        64*1024, VIA_MAX_BUFSIZE);
1452
1453         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1454                                      snd_pcm_std_chmaps, 2, 0,
1455                                      &chmap);
1456         if (err < 0)
1457                 return err;
1458
1459         /* PCM #1:  multi-channel playback and 2nd capture */
1460         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1461         if (err < 0)
1462                 return err;
1463         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1464         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1465         pcm->private_data = chip;
1466         strcpy(pcm->name, chip->card->shortname);
1467         chip->pcms[1] = pcm;
1468         /* set up playback */
1469         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1470         /* set up capture */
1471         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1472
1473         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1474                                        &chip->pci->dev,
1475                                        64*1024, VIA_MAX_BUFSIZE);
1476
1477         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1478                                      snd_pcm_alt_chmaps, 6, 0,
1479                                      &chmap);
1480         if (err < 0)
1481                 return err;
1482         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1483
1484         return 0;
1485 }
1486
1487 /*
1488  * create pcm instances for VIA8233A
1489  */
1490 static int snd_via8233a_pcm_new(struct via82xx *chip)
1491 {
1492         struct snd_pcm *pcm;
1493         struct snd_pcm_chmap *chmap;
1494         int err;
1495
1496         chip->multi_devno = 0;
1497         chip->playback_devno = 1;
1498         chip->capture_devno = 2;
1499         chip->num_devs = 3;
1500         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1501
1502         /* PCM #0:  multi-channel playback and capture */
1503         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1504         if (err < 0)
1505                 return err;
1506         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1507         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1508         pcm->private_data = chip;
1509         strcpy(pcm->name, chip->card->shortname);
1510         chip->pcms[0] = pcm;
1511         /* set up playback */
1512         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1513         /* capture */
1514         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1515
1516         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1517                                        &chip->pci->dev,
1518                                        64*1024, VIA_MAX_BUFSIZE);
1519
1520         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1521                                      snd_pcm_alt_chmaps, 6, 0,
1522                                      &chmap);
1523         if (err < 0)
1524                 return err;
1525         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1526
1527         /* SPDIF supported? */
1528         if (! ac97_can_spdif(chip->ac97))
1529                 return 0;
1530
1531         /* PCM #1:  DXS3 playback (for spdif) */
1532         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1533         if (err < 0)
1534                 return err;
1535         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1536         pcm->private_data = chip;
1537         strcpy(pcm->name, chip->card->shortname);
1538         chip->pcms[1] = pcm;
1539         /* set up playback */
1540         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1541
1542         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1543                                        &chip->pci->dev,
1544                                        64*1024, VIA_MAX_BUFSIZE);
1545         return 0;
1546 }
1547
1548 /*
1549  * create a pcm instance for via686a/b
1550  */
1551 static int snd_via686_pcm_new(struct via82xx *chip)
1552 {
1553         struct snd_pcm *pcm;
1554         int err;
1555
1556         chip->playback_devno = 0;
1557         chip->capture_devno = 1;
1558         chip->num_devs = 2;
1559         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1560
1561         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1562         if (err < 0)
1563                 return err;
1564         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1565         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1566         pcm->private_data = chip;
1567         strcpy(pcm->name, chip->card->shortname);
1568         chip->pcms[0] = pcm;
1569         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1570         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1571
1572         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1573                                        &chip->pci->dev,
1574                                        64*1024, VIA_MAX_BUFSIZE);
1575         return 0;
1576 }
1577
1578
1579 /*
1580  *  Mixer part
1581  */
1582
1583 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1584                                            struct snd_ctl_elem_info *uinfo)
1585 {
1586         /* formerly they were "Line" and "Mic", but it looks like that they
1587          * have nothing to do with the actual physical connections...
1588          */
1589         static const char * const texts[2] = {
1590                 "Input1", "Input2"
1591         };
1592         return snd_ctl_enum_info(uinfo, 1, 2, texts);
1593 }
1594
1595 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1596                                           struct snd_ctl_elem_value *ucontrol)
1597 {
1598         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1599         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1600         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1601         return 0;
1602 }
1603
1604 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1605                                           struct snd_ctl_elem_value *ucontrol)
1606 {
1607         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1608         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1609         u8 val, oval;
1610
1611         spin_lock_irq(&chip->reg_lock);
1612         oval = inb(port);
1613         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1614         if (ucontrol->value.enumerated.item[0])
1615                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1616         if (val != oval)
1617                 outb(val, port);
1618         spin_unlock_irq(&chip->reg_lock);
1619         return val != oval;
1620 }
1621
1622 static struct snd_kcontrol_new snd_via8233_capture_source = {
1623         .name = "Input Source Select",
1624         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1625         .info = snd_via8233_capture_source_info,
1626         .get = snd_via8233_capture_source_get,
1627         .put = snd_via8233_capture_source_put,
1628 };
1629
1630 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1631
1632 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1633                                       struct snd_ctl_elem_value *ucontrol)
1634 {
1635         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1636         u8 val;
1637
1638         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1639         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1640         return 0;
1641 }
1642
1643 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1644                                       struct snd_ctl_elem_value *ucontrol)
1645 {
1646         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1647         u8 val, oval;
1648
1649         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1650         val = oval & ~VIA8233_SPDIF_DX3;
1651         if (ucontrol->value.integer.value[0])
1652                 val |= VIA8233_SPDIF_DX3;
1653         /* save the spdif flag for rate filtering */
1654         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1655         if (val != oval) {
1656                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1657                 return 1;
1658         }
1659         return 0;
1660 }
1661
1662 static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = {
1663         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1664         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1665         .info = snd_via8233_dxs3_spdif_info,
1666         .get = snd_via8233_dxs3_spdif_get,
1667         .put = snd_via8233_dxs3_spdif_put,
1668 };
1669
1670 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1671                                        struct snd_ctl_elem_info *uinfo)
1672 {
1673         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1674         uinfo->count = 2;
1675         uinfo->value.integer.min = 0;
1676         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1677         return 0;
1678 }
1679
1680 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1681                                       struct snd_ctl_elem_value *ucontrol)
1682 {
1683         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1684         unsigned int idx = kcontrol->id.subdevice;
1685
1686         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1687         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1688         return 0;
1689 }
1690
1691 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1692                                          struct snd_ctl_elem_value *ucontrol)
1693 {
1694         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1695         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1696         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1697         return 0;
1698 }
1699
1700 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1701                                       struct snd_ctl_elem_value *ucontrol)
1702 {
1703         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1704         unsigned int idx = kcontrol->id.subdevice;
1705         unsigned long port = chip->port + 0x10 * idx;
1706         unsigned char val;
1707         int i, change = 0;
1708
1709         for (i = 0; i < 2; i++) {
1710                 val = ucontrol->value.integer.value[i];
1711                 if (val > VIA_DXS_MAX_VOLUME)
1712                         val = VIA_DXS_MAX_VOLUME;
1713                 val = VIA_DXS_MAX_VOLUME - val;
1714                 change |= val != chip->playback_volume[idx][i];
1715                 if (change) {
1716                         chip->playback_volume[idx][i] = val;
1717                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1718                 }
1719         }
1720         return change;
1721 }
1722
1723 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1724                                          struct snd_ctl_elem_value *ucontrol)
1725 {
1726         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1727         unsigned int idx;
1728         unsigned char val;
1729         int i, change = 0;
1730
1731         for (i = 0; i < 2; i++) {
1732                 val = ucontrol->value.integer.value[i];
1733                 if (val > VIA_DXS_MAX_VOLUME)
1734                         val = VIA_DXS_MAX_VOLUME;
1735                 val = VIA_DXS_MAX_VOLUME - val;
1736                 if (val != chip->playback_volume_c[i]) {
1737                         change = 1;
1738                         chip->playback_volume_c[i] = val;
1739                         for (idx = 0; idx < 4; idx++) {
1740                                 unsigned long port = chip->port + 0x10 * idx;
1741                                 chip->playback_volume[idx][i] = val;
1742                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1743                         }
1744                 }
1745         }
1746         return change;
1747 }
1748
1749 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1750
1751 static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = {
1752         .name = "PCM Playback Volume",
1753         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1754         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1755                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1756         .info = snd_via8233_dxs_volume_info,
1757         .get = snd_via8233_pcmdxs_volume_get,
1758         .put = snd_via8233_pcmdxs_volume_put,
1759         .tlv = { .p = db_scale_dxs }
1760 };
1761
1762 static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = {
1763         .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1764         .device = 0,
1765         /* .subdevice set later */
1766         .name = "PCM Playback Volume",
1767         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1768                   SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1769                   SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1770         .info = snd_via8233_dxs_volume_info,
1771         .get = snd_via8233_dxs_volume_get,
1772         .put = snd_via8233_dxs_volume_put,
1773         .tlv = { .p = db_scale_dxs }
1774 };
1775
1776 /*
1777  */
1778
1779 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1780 {
1781         struct via82xx *chip = bus->private_data;
1782         chip->ac97_bus = NULL;
1783 }
1784
1785 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1786 {
1787         struct via82xx *chip = ac97->private_data;
1788         chip->ac97 = NULL;
1789 }
1790
1791 static const struct ac97_quirk ac97_quirks[] = {
1792         {
1793                 .subvendor = 0x1106,
1794                 .subdevice = 0x4161,
1795                 .codec_id = 0x56494161, /* VT1612A */
1796                 .name = "Soltek SL-75DRV5",
1797                 .type = AC97_TUNE_NONE
1798         },
1799         {       /* FIXME: which codec? */
1800                 .subvendor = 0x1106,
1801                 .subdevice = 0x4161,
1802                 .name = "ASRock K7VT2",
1803                 .type = AC97_TUNE_HP_ONLY
1804         },
1805         {
1806                 .subvendor = 0x110a,
1807                 .subdevice = 0x0079,
1808                 .name = "Fujitsu Siemens D1289",
1809                 .type = AC97_TUNE_HP_ONLY
1810         },
1811         {
1812                 .subvendor = 0x1019,
1813                 .subdevice = 0x0a81,
1814                 .name = "ECS K7VTA3",
1815                 .type = AC97_TUNE_HP_ONLY
1816         },
1817         {
1818                 .subvendor = 0x1019,
1819                 .subdevice = 0x0a85,
1820                 .name = "ECS L7VMM2",
1821                 .type = AC97_TUNE_HP_ONLY
1822         },
1823         {
1824                 .subvendor = 0x1019,
1825                 .subdevice = 0x1841,
1826                 .name = "ECS K7VTA3",
1827                 .type = AC97_TUNE_HP_ONLY
1828         },
1829         {
1830                 .subvendor = 0x1849,
1831                 .subdevice = 0x3059,
1832                 .name = "ASRock K7VM2",
1833                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1834         },
1835         {
1836                 .subvendor = 0x14cd,
1837                 .subdevice = 0x7002,
1838                 .name = "Unknown",
1839                 .type = AC97_TUNE_ALC_JACK
1840         },
1841         {
1842                 .subvendor = 0x1071,
1843                 .subdevice = 0x8590,
1844                 .name = "Mitac Mobo",
1845                 .type = AC97_TUNE_ALC_JACK
1846         },
1847         {
1848                 .subvendor = 0x161f,
1849                 .subdevice = 0x202b,
1850                 .name = "Arima Notebook",
1851                 .type = AC97_TUNE_HP_ONLY,
1852         },
1853         {
1854                 .subvendor = 0x161f,
1855                 .subdevice = 0x2032,
1856                 .name = "Targa Traveller 811",
1857                 .type = AC97_TUNE_HP_ONLY,
1858         },
1859         {
1860                 .subvendor = 0x161f,
1861                 .subdevice = 0x2032,
1862                 .name = "m680x",
1863                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1864         },
1865         {
1866                 .subvendor = 0x1297,
1867                 .subdevice = 0xa232,
1868                 .name = "Shuttle AK32VN",
1869                 .type = AC97_TUNE_HP_ONLY
1870         },
1871         { } /* terminator */
1872 };
1873
1874 static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1875 {
1876         struct snd_ac97_template ac97;
1877         int err;
1878         static const struct snd_ac97_bus_ops ops = {
1879                 .write = snd_via82xx_codec_write,
1880                 .read = snd_via82xx_codec_read,
1881                 .wait = snd_via82xx_codec_wait,
1882         };
1883
1884         err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
1885         if (err < 0)
1886                 return err;
1887         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1888         chip->ac97_bus->clock = chip->ac97_clock;
1889
1890         memset(&ac97, 0, sizeof(ac97));
1891         ac97.private_data = chip;
1892         ac97.private_free = snd_via82xx_mixer_free_ac97;
1893         ac97.pci = chip->pci;
1894         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1895         err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
1896         if (err < 0)
1897                 return err;
1898
1899         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1900
1901         if (chip->chip_type != TYPE_VIA686) {
1902                 /* use slot 10/11 */
1903                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1904         }
1905
1906         return 0;
1907 }
1908
1909 #ifdef SUPPORT_JOYSTICK
1910 #define JOYSTICK_ADDR   0x200
1911 static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1912 {
1913         struct gameport *gp;
1914
1915         if (!joystick)
1916                 return -ENODEV;
1917
1918         if (!devm_request_region(chip->card->dev, JOYSTICK_ADDR, 8,
1919                                  "VIA686 gameport")) {
1920                 dev_warn(chip->card->dev, "cannot reserve joystick port %#x\n",
1921                        JOYSTICK_ADDR);
1922                 return -EBUSY;
1923         }
1924
1925         chip->gameport = gp = gameport_allocate_port();
1926         if (!gp) {
1927                 dev_err(chip->card->dev,
1928                         "cannot allocate memory for gameport\n");
1929                 return -ENOMEM;
1930         }
1931
1932         gameport_set_name(gp, "VIA686 Gameport");
1933         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1934         gameport_set_dev_parent(gp, &chip->pci->dev);
1935         gp->io = JOYSTICK_ADDR;
1936
1937         /* Enable legacy joystick port */
1938         *legacy |= VIA_FUNC_ENABLE_GAME;
1939         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1940
1941         gameport_register_port(chip->gameport);
1942
1943         return 0;
1944 }
1945
1946 static void snd_via686_free_gameport(struct via82xx *chip)
1947 {
1948         if (chip->gameport) {
1949                 gameport_unregister_port(chip->gameport);
1950                 chip->gameport = NULL;
1951         }
1952 }
1953 #else
1954 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1955 {
1956         return -ENOSYS;
1957 }
1958 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1959 #endif
1960
1961
1962 /*
1963  *
1964  */
1965
1966 static int snd_via8233_init_misc(struct via82xx *chip)
1967 {
1968         int i, err, caps;
1969         unsigned char val;
1970
1971         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1972         for (i = 0; i < caps; i++) {
1973                 snd_via8233_capture_source.index = i;
1974                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1975                 if (err < 0)
1976                         return err;
1977         }
1978         if (ac97_can_spdif(chip->ac97)) {
1979                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1980                 if (err < 0)
1981                         return err;
1982         }
1983         if (chip->chip_type != TYPE_VIA8233A) {
1984                 /* when no h/w PCM volume control is found, use DXS volume control
1985                  * as the PCM vol control
1986                  */
1987                 if (!snd_ctl_find_id_mixer(chip->card, "PCM Playback Volume")) {
1988                         dev_info(chip->card->dev,
1989                                  "Using DXS as PCM Playback\n");
1990                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1991                         if (err < 0)
1992                                 return err;
1993                 }
1994                 else /* Using DXS when PCM emulation is enabled is really weird */
1995                 {
1996                         for (i = 0; i < 4; ++i) {
1997                                 struct snd_kcontrol *kctl;
1998
1999                                 kctl = snd_ctl_new1(
2000                                         &snd_via8233_dxs_volume_control, chip);
2001                                 if (!kctl)
2002                                         return -ENOMEM;
2003                                 kctl->id.subdevice = i;
2004                                 err = snd_ctl_add(chip->card, kctl);
2005                                 if (err < 0)
2006                                         return err;
2007                                 chip->dxs_controls[i] = kctl;
2008                         }
2009                 }
2010         }
2011         /* select spdif data slot 10/11 */
2012         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2013         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2014         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2015         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2016
2017         return 0;
2018 }
2019
2020 static int snd_via686_init_misc(struct via82xx *chip)
2021 {
2022         unsigned char legacy, legacy_cfg;
2023         int rev_h = 0;
2024
2025         legacy = chip->old_legacy;
2026         legacy_cfg = chip->old_legacy_cfg;
2027         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2028         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2029         if (chip->revision >= VIA_REV_686_H) {
2030                 rev_h = 1;
2031                 if (mpu_port >= 0x200) {        /* force MIDI */
2032                         mpu_port &= 0xfffc;
2033                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2034 #ifdef CONFIG_PM_SLEEP
2035                         chip->mpu_port_saved = mpu_port;
2036 #endif
2037                 } else {
2038                         mpu_port = pci_resource_start(chip->pci, 2);
2039                 }
2040         } else {
2041                 switch (mpu_port) {     /* force MIDI */
2042                 case 0x300:
2043                 case 0x310:
2044                 case 0x320:
2045                 case 0x330:
2046                         legacy_cfg &= ~(3 << 2);
2047                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
2048                         break;
2049                 default:                        /* no, use BIOS settings */
2050                         if (legacy & VIA_FUNC_ENABLE_MIDI)
2051                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2052                         break;
2053                 }
2054         }
2055         if (mpu_port >= 0x200)
2056                 chip->mpu_res = devm_request_region(&chip->pci->dev, mpu_port,
2057                                                     2, "VIA82xx MPU401");
2058         if (chip->mpu_res) {
2059                 if (rev_h)
2060                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2061                 legacy |= VIA_FUNC_ENABLE_MIDI;
2062         } else {
2063                 if (rev_h)
2064                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2065                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
2066                 mpu_port = 0;
2067         }
2068
2069         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2070         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2071         if (chip->mpu_res) {
2072                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2073                                         mpu_port, MPU401_INFO_INTEGRATED |
2074                                         MPU401_INFO_IRQ_HOOK, -1,
2075                                         &chip->rmidi) < 0) {
2076                         dev_warn(chip->card->dev,
2077                                  "unable to initialize MPU-401 at 0x%lx, skipping\n",
2078                                  mpu_port);
2079                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2080                 } else {
2081                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2082                 }
2083                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2084         }
2085
2086         snd_via686_create_gameport(chip, &legacy);
2087
2088 #ifdef CONFIG_PM_SLEEP
2089         chip->legacy_saved = legacy;
2090         chip->legacy_cfg_saved = legacy_cfg;
2091 #endif
2092
2093         return 0;
2094 }
2095
2096
2097 /*
2098  * proc interface
2099  */
2100 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2101                                   struct snd_info_buffer *buffer)
2102 {
2103         struct via82xx *chip = entry->private_data;
2104         int i;
2105
2106         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2107         for (i = 0; i < 0xa0; i += 4) {
2108                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2109         }
2110 }
2111
2112 static void snd_via82xx_proc_init(struct via82xx *chip)
2113 {
2114         snd_card_ro_proc_new(chip->card, "via82xx", chip,
2115                              snd_via82xx_proc_read);
2116 }
2117
2118 /*
2119  *
2120  */
2121
2122 static int snd_via82xx_chip_init(struct via82xx *chip)
2123 {
2124         unsigned int val;
2125         unsigned long end_time;
2126         unsigned char pval;
2127
2128 #if 0 /* broken on K7M? */
2129         if (chip->chip_type == TYPE_VIA686)
2130                 /* disable all legacy ports */
2131                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2132 #endif
2133         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2134         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2135                 /* deassert ACLink reset, force SYNC */
2136                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2137                                       VIA_ACLINK_CTRL_ENABLE |
2138                                       VIA_ACLINK_CTRL_RESET |
2139                                       VIA_ACLINK_CTRL_SYNC);
2140                 udelay(100);
2141 #if 1 /* FIXME: should we do full reset here for all chip models? */
2142                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2143                 udelay(100);
2144 #else
2145                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2146                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2147                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2148                 udelay(2);
2149 #endif
2150                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2151                 /* note - FM data out has trouble with non VRA codecs !! */
2152                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2153                 udelay(100);
2154         }
2155
2156         /* Make sure VRA is enabled, in case we didn't do a
2157          * complete codec reset, above */
2158         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2159         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2160                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2161                 /* note - FM data out has trouble with non VRA codecs !! */
2162                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2163                 udelay(100);
2164         }
2165
2166         /* wait until codec ready */
2167         end_time = jiffies + msecs_to_jiffies(750);
2168         do {
2169                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2170                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2171                         break;
2172                 schedule_timeout_uninterruptible(1);
2173         } while (time_before(jiffies, end_time));
2174
2175         val = snd_via82xx_codec_xread(chip);
2176         if (val & 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                 val = snd_via82xx_codec_xread(chip);
2190                 if (val & VIA_REG_AC97_SECONDARY_VALID) {
2191                         chip->ac97_secondary = 1;
2192                         goto __ac97_ok2;
2193                 }
2194                 schedule_timeout_uninterruptible(1);
2195         } while (time_before(jiffies, end_time));
2196         /* This is ok, the most of motherboards have only one codec */
2197
2198       __ac97_ok2:
2199 #endif
2200
2201         if (chip->chip_type == TYPE_VIA686) {
2202                 /* route FM trap to IRQ, disable FM trap */
2203                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2204                 /* disable all GPI interrupts */
2205                 outl(0, VIAREG(chip, GPI_INTR));
2206         }
2207
2208         if (chip->chip_type != TYPE_VIA686) {
2209                 /* Workaround for Award BIOS bug:
2210                  * DXS channels don't work properly with VRA if MC97 is disabled.
2211                  */
2212                 struct pci_dev *pci;
2213                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2214                 if (pci) {
2215                         unsigned char data;
2216                         pci_read_config_byte(pci, 0x44, &data);
2217                         pci_write_config_byte(pci, 0x44, data | 0x40);
2218                         pci_dev_put(pci);
2219                 }
2220         }
2221
2222         if (chip->chip_type != TYPE_VIA8233A) {
2223                 int i, idx;
2224                 for (idx = 0; idx < 4; idx++) {
2225                         unsigned long port = chip->port + 0x10 * idx;
2226                         for (i = 0; i < 2; i++) {
2227                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2228                                 outb(chip->playback_volume_c[i],
2229                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2230                         }
2231                 }
2232         }
2233
2234         return 0;
2235 }
2236
2237 #ifdef CONFIG_PM_SLEEP
2238 /*
2239  * power management
2240  */
2241 static int snd_via82xx_suspend(struct device *dev)
2242 {
2243         struct snd_card *card = dev_get_drvdata(dev);
2244         struct via82xx *chip = card->private_data;
2245         int i;
2246
2247         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2248         for (i = 0; i < chip->num_devs; i++)
2249                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2250         snd_ac97_suspend(chip->ac97);
2251
2252         /* save misc values */
2253         if (chip->chip_type != TYPE_VIA686) {
2254                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2255                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2256                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2257         }
2258
2259         return 0;
2260 }
2261
2262 static int snd_via82xx_resume(struct device *dev)
2263 {
2264         struct snd_card *card = dev_get_drvdata(dev);
2265         struct via82xx *chip = card->private_data;
2266         int i;
2267
2268         snd_via82xx_chip_init(chip);
2269
2270         if (chip->chip_type == TYPE_VIA686) {
2271                 if (chip->mpu_port_saved)
2272                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2273                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2274                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2275         } else {
2276                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2277                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2278                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2279         }
2280
2281         snd_ac97_resume(chip->ac97);
2282
2283         for (i = 0; i < chip->num_devs; i++)
2284                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2285
2286         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2287         return 0;
2288 }
2289
2290 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2291 #define SND_VIA82XX_PM_OPS      &snd_via82xx_pm
2292 #else
2293 #define SND_VIA82XX_PM_OPS      NULL
2294 #endif /* CONFIG_PM_SLEEP */
2295
2296 static void snd_via82xx_free(struct snd_card *card)
2297 {
2298         struct via82xx *chip = card->private_data;
2299         unsigned int i;
2300
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->chip_type == TYPE_VIA686) {
2306                 snd_via686_free_gameport(chip);
2307                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2308                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2309         }
2310 }
2311
2312 static int snd_via82xx_create(struct snd_card *card,
2313                               struct pci_dev *pci,
2314                               int chip_type,
2315                               int revision,
2316                               unsigned int ac97_clock)
2317 {
2318         struct via82xx *chip = card->private_data;
2319         int err;
2320
2321         err = pcim_enable_device(pci);
2322         if (err < 0)
2323                 return err;
2324
2325         chip->chip_type = chip_type;
2326         chip->revision = revision;
2327
2328         spin_lock_init(&chip->reg_lock);
2329         spin_lock_init(&chip->rates[0].lock);
2330         spin_lock_init(&chip->rates[1].lock);
2331         chip->card = card;
2332         chip->pci = pci;
2333         chip->irq = -1;
2334
2335         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2336         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2337         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2338                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2339
2340         err = pci_request_regions(pci, card->driver);
2341         if (err < 0)
2342                 return err;
2343         chip->port = pci_resource_start(pci, 0);
2344         if (devm_request_irq(&pci->dev, pci->irq,
2345                              chip_type == TYPE_VIA8233 ?
2346                              snd_via8233_interrupt : snd_via686_interrupt,
2347                              IRQF_SHARED,
2348                              KBUILD_MODNAME, chip)) {
2349                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2350                 return -EBUSY;
2351         }
2352         chip->irq = pci->irq;
2353         card->sync_irq = chip->irq;
2354         card->private_free = snd_via82xx_free;
2355         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2356                 chip->ac97_clock = ac97_clock;
2357
2358         err = snd_via82xx_chip_init(chip);
2359         if (err < 0)
2360                 return err;
2361
2362         /* The 8233 ac97 controller does not implement the master bit
2363          * in the pci command register. IMHO this is a violation of the PCI spec.
2364          * We call pci_set_master here because it does not hurt. */
2365         pci_set_master(pci);
2366         return 0;
2367 }
2368
2369 struct via823x_info {
2370         int revision;
2371         char *name;
2372         int type;
2373 };
2374 static const struct via823x_info via823x_cards[] = {
2375         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2376         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2377         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2378         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2379         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2380         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2381         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2382 };
2383
2384 /*
2385  * auto detection of DXS channel supports.
2386  */
2387
2388 static const struct snd_pci_quirk dxs_allowlist[] = {
2389         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2390         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2391         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2392         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2393         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2394         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2395         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2396         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2397         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2398         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2399         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2400         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2401         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2402         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2403         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2404         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2405         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2406         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2407         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2408         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2409         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2410         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2411         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2412         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2413         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2414         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2415         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2416         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2417         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2418         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2419         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2420         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2421         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2422         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2423         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2424         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2425         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2426         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2427         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2428         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2429         { } /* terminator */
2430 };
2431
2432 static int check_dxs_list(struct pci_dev *pci, int revision)
2433 {
2434         const struct snd_pci_quirk *w;
2435
2436         w = snd_pci_quirk_lookup(pci, dxs_allowlist);
2437         if (w) {
2438                 dev_dbg(&pci->dev, "DXS allow list for %s found\n",
2439                             snd_pci_quirk_name(w));
2440                 return w->value;
2441         }
2442
2443         /* for newer revision, default to DXS_SRC */
2444         if (revision >= VIA_REV_8235)
2445                 return VIA_DXS_SRC;
2446
2447         /*
2448          * not detected, try 48k rate only to be sure.
2449          */
2450         dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n");
2451         dev_info(&pci->dev, "         Please try dxs_support=5 option\n");
2452         dev_info(&pci->dev, "         and report if it works on your machine.\n");
2453         dev_info(&pci->dev, "         For more details, read ALSA-Configuration.txt.\n");
2454         return VIA_DXS_48K;
2455 };
2456
2457 static int __snd_via82xx_probe(struct pci_dev *pci,
2458                                const struct pci_device_id *pci_id)
2459 {
2460         struct snd_card *card;
2461         struct via82xx *chip;
2462         int chip_type = 0, card_type;
2463         unsigned int i;
2464         int err;
2465
2466         err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE,
2467                                 sizeof(*chip), &card);
2468         if (err < 0)
2469                 return err;
2470         chip = card->private_data;
2471
2472         card_type = pci_id->driver_data;
2473         switch (card_type) {
2474         case TYPE_CARD_VIA686:
2475                 strcpy(card->driver, "VIA686A");
2476                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2477                 chip_type = TYPE_VIA686;
2478                 break;
2479         case TYPE_CARD_VIA8233:
2480                 chip_type = TYPE_VIA8233;
2481                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2482                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2483                         if (pci->revision == via823x_cards[i].revision) {
2484                                 chip_type = via823x_cards[i].type;
2485                                 strcpy(card->shortname, via823x_cards[i].name);
2486                                 break;
2487                         }
2488                 }
2489                 if (chip_type != TYPE_VIA8233A) {
2490                         if (dxs_support == VIA_DXS_AUTO)
2491                                 dxs_support = check_dxs_list(pci, pci->revision);
2492                         /* force to use VIA8233 or 8233A model according to
2493                          * dxs_support module option
2494                          */
2495                         if (dxs_support == VIA_DXS_DISABLE)
2496                                 chip_type = TYPE_VIA8233A;
2497                         else
2498                                 chip_type = TYPE_VIA8233;
2499                 }
2500                 if (chip_type == TYPE_VIA8233A)
2501                         strcpy(card->driver, "VIA8233A");
2502                 else if (pci->revision >= VIA_REV_8237)
2503                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2504                 else
2505                         strcpy(card->driver, "VIA8233");
2506                 break;
2507         default:
2508                 dev_err(card->dev, "invalid card type %d\n", card_type);
2509                 return -EINVAL;
2510         }
2511
2512         err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2513                                  ac97_clock);
2514         if (err < 0)
2515                 return err;
2516         err = snd_via82xx_mixer_new(chip, ac97_quirk);
2517         if (err < 0)
2518                 return err;
2519
2520         if (chip_type == TYPE_VIA686) {
2521                 err = snd_via686_pcm_new(chip);
2522                 if (err < 0)
2523                         return err;
2524                 err = snd_via686_init_misc(chip);
2525                 if (err < 0)
2526                         return err;
2527         } else {
2528                 if (chip_type == TYPE_VIA8233A) {
2529                         err = snd_via8233a_pcm_new(chip);
2530                         if (err < 0)
2531                                 return err;
2532                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2533                 } else {
2534                         err = snd_via8233_pcm_new(chip);
2535                         if (err < 0)
2536                                 return err;
2537                         if (dxs_support == VIA_DXS_48K)
2538                                 chip->dxs_fixed = 1;
2539                         else if (dxs_support == VIA_DXS_NO_VRA)
2540                                 chip->no_vra = 1;
2541                         else if (dxs_support == VIA_DXS_SRC) {
2542                                 chip->no_vra = 1;
2543                                 chip->dxs_src = 1;
2544                         }
2545                 }
2546                 err = snd_via8233_init_misc(chip);
2547                 if (err < 0)
2548                         return err;
2549         }
2550
2551         /* disable interrupts */
2552         for (i = 0; i < chip->num_devs; i++)
2553                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2554
2555         snprintf(card->longname, sizeof(card->longname),
2556                  "%s with %s at %#lx, irq %d", card->shortname,
2557                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2558
2559         snd_via82xx_proc_init(chip);
2560
2561         err = snd_card_register(card);
2562         if (err < 0)
2563                 return err;
2564         pci_set_drvdata(pci, card);
2565         return 0;
2566 }
2567
2568 static int snd_via82xx_probe(struct pci_dev *pci,
2569                              const struct pci_device_id *pci_id)
2570 {
2571         return snd_card_free_on_error(&pci->dev, __snd_via82xx_probe(pci, pci_id));
2572 }
2573
2574 static struct pci_driver via82xx_driver = {
2575         .name = KBUILD_MODNAME,
2576         .id_table = snd_via82xx_ids,
2577         .probe = snd_via82xx_probe,
2578         .driver = {
2579                 .pm = SND_VIA82XX_PM_OPS,
2580         },
2581 };
2582
2583 module_pci_driver(via82xx_driver);