drivers/media/video/bt8xx/bttv-driver.c

   1 /*
   2
   3     bttv - Bt848 frame grabber driver
   4
   5     Copyright (C) 1996,97,98 Ralph  Metzler <rjkm@thp.uni-koeln.de>
   6                            & Marcus Metzler <mocm@thp.uni-koeln.de>
   7     (c) 1999-2002 Gerd Knorr <kraxel@bytesex.org>
   8
   9     some v4l2 code lines are taken from Justin's bttv2 driver which is
  10     (c) 2000 Justin Schoeman <justin@suntiger.ee.up.ac.za>
  11
  12     Cropping and overscan support
  13     Copyright (C) 2005, 2006 Michael H. Schimek <mschimek@gmx.at>
  14     Sponsored by OPQ Systems AB
  15
  16     This program is free software; you can redistribute it and/or modify
  17     it under the terms of the GNU General Public License as published by
  18     the Free Software Foundation; either version 2 of the License, or
  19     (at your option) any later version.
  20
  21     This program is distributed in the hope that it will be useful,
  22     but WITHOUT ANY WARRANTY; without even the implied warranty of
  23     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24     GNU General Public License for more details.
  25
  26     You should have received a copy of the GNU General Public License
  27     along with this program; if not, write to the Free Software
  28     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  29 */
  30
  31 #include <linux/init.h>
  32 #include <linux/module.h>
  33 #include <linux/delay.h>
  34 #include <linux/errno.h>
  35 #include <linux/fs.h>
  36 #include <linux/kernel.h>
  37 #include <linux/sched.h>
  38 #include <linux/interrupt.h>
  39 #include <linux/kdev_t.h>
  40 #include "bttvp.h"
  41 #include <media/v4l2-common.h>
  42 #include <media/tvaudio.h>
  43 #include <media/msp3400.h>
  44
  45 #include <linux/dma-mapping.h>
  46
  47 #include <asm/io.h>
  48 #include <asm/byteorder.h>
  49
  50 #include <media/rds.h>
  51
  52
  53 unsigned int bttv_num;                  /* number of Bt848s in use */
  54 struct bttv bttvs[BTTV_MAX];
  55
  56 unsigned int bttv_debug;
  57 unsigned int bttv_verbose = 1;
  58 unsigned int bttv_gpio;
  59
  60 /* config variables */
  61 #ifdef __BIG_ENDIAN
  62 static unsigned int bigendian=1;
  63 #else
  64 static unsigned int bigendian;
  65 #endif
  66 static unsigned int radio[BTTV_MAX];
  67 static unsigned int irq_debug;
  68 static unsigned int gbuffers = 8;
  69 static unsigned int gbufsize = 0x208000;
  70 static unsigned int reset_crop = 1;
  71
  72 static int video_nr = -1;
  73 static int radio_nr = -1;
  74 static int vbi_nr = -1;
  75 static int debug_latency;
  76
  77 static unsigned int fdsr;
  78
  79 /* options */
  80 static unsigned int combfilter;
  81 static unsigned int lumafilter;
  82 static unsigned int automute    = 1;
  83 static unsigned int chroma_agc;
  84 static unsigned int adc_crush   = 1;
  85 static unsigned int whitecrush_upper = 0xCF;
  86 static unsigned int whitecrush_lower = 0x7F;
  87 static unsigned int vcr_hack;
  88 static unsigned int irq_iswitch;
  89 static unsigned int uv_ratio    = 50;
  90 static unsigned int full_luma_range;
  91 static unsigned int coring;
  92 extern int no_overlay;
  93
  94 /* API features (turn on/off stuff for testing) */
  95 static unsigned int v4l2        = 1;
  96
  97 /* insmod args */
  98 module_param(bttv_verbose,      int, 0644);
  99 module_param(bttv_gpio,         int, 0644);
 100 module_param(bttv_debug,        int, 0644);
 101 module_param(irq_debug,         int, 0644);
 102 module_param(debug_latency,     int, 0644);
 103
 104 module_param(fdsr,              int, 0444);
 105 module_param(video_nr,          int, 0444);
 106 module_param(radio_nr,          int, 0444);
 107 module_param(vbi_nr,            int, 0444);
 108 module_param(gbuffers,          int, 0444);
 109 module_param(gbufsize,          int, 0444);
 110 module_param(reset_crop,        int, 0444);
 111
 112 module_param(v4l2,              int, 0644);
 113 module_param(bigendian,         int, 0644);
 114 module_param(irq_iswitch,       int, 0644);
 115 module_param(combfilter,        int, 0444);
 116 module_param(lumafilter,        int, 0444);
 117 module_param(automute,          int, 0444);
 118 module_param(chroma_agc,        int, 0444);
 119 module_param(adc_crush,         int, 0444);
 120 module_param(whitecrush_upper,  int, 0444);
 121 module_param(whitecrush_lower,  int, 0444);
 122 module_param(vcr_hack,          int, 0444);
 123 module_param(uv_ratio,          int, 0444);
 124 module_param(full_luma_range,   int, 0444);
 125 module_param(coring,            int, 0444);
 126
 127 module_param_array(radio, int, NULL, 0444);
 128
 129 MODULE_PARM_DESC(radio,"The TV card supports radio, default is 0 (no)");
 130 MODULE_PARM_DESC(bigendian,"byte order of the framebuffer, default is native endian");
 131 MODULE_PARM_DESC(bttv_verbose,"verbose startup messages, default is 1 (yes)");
 132 MODULE_PARM_DESC(bttv_gpio,"log gpio changes, default is 0 (no)");
 133 MODULE_PARM_DESC(bttv_debug,"debug messages, default is 0 (no)");
 134 MODULE_PARM_DESC(irq_debug,"irq handler debug messages, default is 0 (no)");
 135 MODULE_PARM_DESC(gbuffers,"number of capture buffers. range 2-32, default 8");
 136 MODULE_PARM_DESC(gbufsize,"size of the capture buffers, default is 0x208000");
 137 MODULE_PARM_DESC(reset_crop,"reset cropping parameters at open(), default "
 138                  "is 1 (yes) for compatibility with older applications");
 139 MODULE_PARM_DESC(automute,"mute audio on bad/missing video signal, default is 1 (yes)");
 140 MODULE_PARM_DESC(chroma_agc,"enables the AGC of chroma signal, default is 0 (no)");
 141 MODULE_PARM_DESC(adc_crush,"enables the luminance ADC crush, default is 1 (yes)");
 142 MODULE_PARM_DESC(whitecrush_upper,"sets the white crush upper value, default is 207");
 143 MODULE_PARM_DESC(whitecrush_lower,"sets the white crush lower value, default is 127");
 144 MODULE_PARM_DESC(vcr_hack,"enables the VCR hack (improves synch on poor VCR tapes), default is 0 (no)");
 145 MODULE_PARM_DESC(irq_iswitch,"switch inputs in irq handler");
 146 MODULE_PARM_DESC(uv_ratio,"ratio between u and v gains, default is 50");
 147 MODULE_PARM_DESC(full_luma_range,"use the full luma range, default is 0 (no)");
 148 MODULE_PARM_DESC(coring,"set the luma coring level, default is 0 (no)");
 149
 150 MODULE_DESCRIPTION("bttv - v4l/v4l2 driver module for bt848/878 based cards");
 151 MODULE_AUTHOR("Ralph Metzler & Marcus Metzler & Gerd Knorr");
 152 MODULE_LICENSE("GPL");
 153
 154 /* ----------------------------------------------------------------------- */
 155 /* sysfs                                                                   */
 156
 157 static ssize_t show_card(struct device *cd,
 158                          struct device_attribute *attr, char *buf)
 159 {
 160         struct video_device *vfd = to_video_device(cd);
 161         struct bttv *btv = dev_get_drvdata(vfd->dev);
 162         return sprintf(buf, "%d\n", btv ? btv->c.type : UNSET);
 163 }
 164 static DEVICE_ATTR(card, S_IRUGO, show_card, NULL);
 165
 166 /* ----------------------------------------------------------------------- */
 167 /* dvb auto-load setup                                                     */
 168 #if defined(CONFIG_MODULES) && defined(MODULE)
 169 static void request_module_async(struct work_struct *work)
 170 {
 171         request_module("dvb-bt8xx");
 172 }
 173
 174 static void request_modules(struct bttv *dev)
 175 {
 176         INIT_WORK(&dev->request_module_wk, request_module_async);
 177         schedule_work(&dev->request_module_wk);
 178 }
 179 #else
 180 #define request_modules(dev)
 181 #endif /* CONFIG_MODULES */
 182
 183
 184 /* ----------------------------------------------------------------------- */
 185 /* static data                                                             */
 186
 187 /* special timing tables from conexant... */
 188 static u8 SRAM_Table[][60] =
 189 {
 190         /* PAL digital input over GPIO[7:0] */
 191         {
 192                 45, // 45 bytes following
 193                 0x36,0x11,0x01,0x00,0x90,0x02,0x05,0x10,0x04,0x16,
 194                 0x12,0x05,0x11,0x00,0x04,0x12,0xC0,0x00,0x31,0x00,
 195                 0x06,0x51,0x08,0x03,0x89,0x08,0x07,0xC0,0x44,0x00,
 196                 0x81,0x01,0x01,0xA9,0x0D,0x02,0x02,0x50,0x03,0x37,
 197                 0x37,0x00,0xAF,0x21,0x00
 198         },
 199         /* NTSC digital input over GPIO[7:0] */
 200         {
 201                 51, // 51 bytes following
 202                 0x0C,0xC0,0x00,0x00,0x90,0x02,0x03,0x10,0x03,0x06,
 203                 0x10,0x04,0x12,0x12,0x05,0x02,0x13,0x04,0x19,0x00,
 204                 0x04,0x39,0x00,0x06,0x59,0x08,0x03,0x83,0x08,0x07,
 205                 0x03,0x50,0x00,0xC0,0x40,0x00,0x86,0x01,0x01,0xA6,
 206                 0x0D,0x02,0x03,0x11,0x01,0x05,0x37,0x00,0xAC,0x21,
 207                 0x00,
 208         },
 209         // TGB_NTSC392 // quartzsight
 210         // This table has been modified to be used for Fusion Rev D
 211         {
 212                 0x2A, // size of table = 42
 213                 0x06, 0x08, 0x04, 0x0a, 0xc0, 0x00, 0x18, 0x08, 0x03, 0x24,
 214                 0x08, 0x07, 0x02, 0x90, 0x02, 0x08, 0x10, 0x04, 0x0c, 0x10,
 215                 0x05, 0x2c, 0x11, 0x04, 0x55, 0x48, 0x00, 0x05, 0x50, 0x00,
 216                 0xbf, 0x0c, 0x02, 0x2f, 0x3d, 0x00, 0x2f, 0x3f, 0x00, 0xc3,
 217                 0x20, 0x00
 218         }
 219 };
 220
 221 /* minhdelayx1  first video pixel we can capture on a line and
 222    hdelayx1     start of active video, both relative to rising edge of
 223                 /HRESET pulse (0H) in 1 / fCLKx1.
 224    swidth       width of active video and
 225    totalwidth   total line width, both in 1 / fCLKx1.
 226    sqwidth      total line width in square pixels.
 227    vdelay       start of active video in 2 * field lines relative to
 228                 trailing edge of /VRESET pulse (VDELAY register).
 229    sheight      height of active video in 2 * field lines.
 230    videostart0  ITU-R frame line number of the line corresponding
 231                 to vdelay in the first field. */
 232 #define CROPCAP(minhdelayx1, hdelayx1, swidth, totalwidth, sqwidth,      \
 233                 vdelay, sheight, videostart0)                            \
 234         .cropcap.bounds.left = minhdelayx1,                              \
 235         /* * 2 because vertically we count field lines times two, */     \
 236         /* e.g. 23 * 2 to 23 * 2 + 576 in PAL-BGHI defrect. */           \
 237         .cropcap.bounds.top = (videostart0) * 2 - (vdelay) + MIN_VDELAY, \
 238         /* 4 is a safety margin at the end of the line. */               \
 239         .cropcap.bounds.width = (totalwidth) - (minhdelayx1) - 4,        \
 240         .cropcap.bounds.height = (sheight) + (vdelay) - MIN_VDELAY,      \
 241         .cropcap.defrect.left = hdelayx1,                                \
 242         .cropcap.defrect.top = (videostart0) * 2,                        \
 243         .cropcap.defrect.width = swidth,                                 \
 244         .cropcap.defrect.height = sheight,                               \
 245         .cropcap.pixelaspect.numerator = totalwidth,                     \
 246         .cropcap.pixelaspect.denominator = sqwidth,
 247
 248 const struct bttv_tvnorm bttv_tvnorms[] = {
 249         /* PAL-BDGHI */
 250         /* max. active video is actually 922, but 924 is divisible by 4 and 3! */
 251         /* actually, max active PAL with HSCALE=0 is 948, NTSC is 768 - nil */
 252         {
 253                 .v4l2_id        = V4L2_STD_PAL,
 254                 .name           = "PAL",
 255                 .Fsc            = 35468950,
 256                 .swidth         = 924,
 257                 .sheight        = 576,
 258                 .totalwidth     = 1135,
 259                 .adelay         = 0x7f,
 260                 .bdelay         = 0x72,
 261                 .iform          = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1),
 262                 .scaledtwidth   = 1135,
 263                 .hdelayx1       = 186,
 264                 .hactivex1      = 924,
 265                 .vdelay         = 0x20,
 266                 .vbipack        = 255, /* min (2048 / 4, 0x1ff) & 0xff */
 267                 .sram           = 0,
 268                 /* ITU-R frame line number of the first VBI line
 269                    we can capture, of the first and second field.
 270                    The last line is determined by cropcap.bounds. */
 271                 .vbistart       = { 7, 320 },
 272                 CROPCAP(/* minhdelayx1 */ 68,
 273                         /* hdelayx1 */ 186,
 274                         /* Should be (768 * 1135 + 944 / 2) / 944.
 275                            cropcap.defrect is used for image width
 276                            checks, so we keep the old value 924. */
 277                         /* swidth */ 924,
 278                         /* totalwidth */ 1135,
 279                         /* sqwidth */ 944,
 280                         /* vdelay */ 0x20,
 281                         /* sheight */ 576,
 282                         /* videostart0 */ 23)
 283                 /* bt878 (and bt848?) can capture another
 284                    line below active video. */
 285                 .cropcap.bounds.height = (576 + 2) + 0x20 - 2,
 286         },{
 287                 .v4l2_id        = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR,
 288                 .name           = "NTSC",
 289                 .Fsc            = 28636363,
 290                 .swidth         = 768,
 291                 .sheight        = 480,
 292                 .totalwidth     = 910,
 293                 .adelay         = 0x68,
 294                 .bdelay         = 0x5d,
 295                 .iform          = (BT848_IFORM_NTSC|BT848_IFORM_XT0),
 296                 .scaledtwidth   = 910,
 297                 .hdelayx1       = 128,
 298                 .hactivex1      = 910,
 299                 .vdelay         = 0x1a,
 300                 .vbipack        = 144, /* min (1600 / 4, 0x1ff) & 0xff */
 301                 .sram           = 1,
 302                 .vbistart       = { 10, 273 },
 303                 CROPCAP(/* minhdelayx1 */ 68,
 304                         /* hdelayx1 */ 128,
 305                         /* Should be (640 * 910 + 780 / 2) / 780? */
 306                         /* swidth */ 768,
 307                         /* totalwidth */ 910,
 308                         /* sqwidth */ 780,
 309                         /* vdelay */ 0x1a,
 310                         /* sheight */ 480,
 311                         /* videostart0 */ 23)
 312         },{
 313                 .v4l2_id        = V4L2_STD_SECAM,
 314                 .name           = "SECAM",
 315                 .Fsc            = 35468950,
 316                 .swidth         = 924,
 317                 .sheight        = 576,
 318                 .totalwidth     = 1135,
 319                 .adelay         = 0x7f,
 320                 .bdelay         = 0xb0,
 321                 .iform          = (BT848_IFORM_SECAM|BT848_IFORM_XT1),
 322                 .scaledtwidth   = 1135,
 323                 .hdelayx1       = 186,
 324                 .hactivex1      = 922,
 325                 .vdelay         = 0x20,
 326                 .vbipack        = 255,
 327                 .sram           = 0, /* like PAL, correct? */
 328                 .vbistart       = { 7, 320 },
 329                 CROPCAP(/* minhdelayx1 */ 68,
 330                         /* hdelayx1 */ 186,
 331                         /* swidth */ 924,
 332                         /* totalwidth */ 1135,
 333                         /* sqwidth */ 944,
 334                         /* vdelay */ 0x20,
 335                         /* sheight */ 576,
 336                         /* videostart0 */ 23)
 337         },{
 338                 .v4l2_id        = V4L2_STD_PAL_Nc,
 339                 .name           = "PAL-Nc",
 340                 .Fsc            = 28636363,
 341                 .swidth         = 640,
 342                 .sheight        = 576,
 343                 .totalwidth     = 910,
 344                 .adelay         = 0x68,
 345                 .bdelay         = 0x5d,
 346                 .iform          = (BT848_IFORM_PAL_NC|BT848_IFORM_XT0),
 347                 .scaledtwidth   = 780,
 348                 .hdelayx1       = 130,
 349                 .hactivex1      = 734,
 350                 .vdelay         = 0x1a,
 351                 .vbipack        = 144,
 352                 .sram           = -1,
 353                 .vbistart       = { 7, 320 },
 354                 CROPCAP(/* minhdelayx1 */ 68,
 355                         /* hdelayx1 */ 130,
 356                         /* swidth */ (640 * 910 + 780 / 2) / 780,
 357                         /* totalwidth */ 910,
 358                         /* sqwidth */ 780,
 359                         /* vdelay */ 0x1a,
 360                         /* sheight */ 576,
 361                         /* videostart0 */ 23)
 362         },{
 363                 .v4l2_id        = V4L2_STD_PAL_M,
 364                 .name           = "PAL-M",
 365                 .Fsc            = 28636363,
 366                 .swidth         = 640,
 367                 .sheight        = 480,
 368                 .totalwidth     = 910,
 369                 .adelay         = 0x68,
 370                 .bdelay         = 0x5d,
 371                 .iform          = (BT848_IFORM_PAL_M|BT848_IFORM_XT0),
 372                 .scaledtwidth   = 780,
 373                 .hdelayx1       = 135,
 374                 .hactivex1      = 754,
 375                 .vdelay         = 0x1a,
 376                 .vbipack        = 144,
 377                 .sram           = -1,
 378                 .vbistart       = { 10, 273 },
 379                 CROPCAP(/* minhdelayx1 */ 68,
 380                         /* hdelayx1 */ 135,
 381                         /* swidth */ (640 * 910 + 780 / 2) / 780,
 382                         /* totalwidth */ 910,
 383                         /* sqwidth */ 780,
 384                         /* vdelay */ 0x1a,
 385                         /* sheight */ 480,
 386                         /* videostart0 */ 23)
 387         },{
 388                 .v4l2_id        = V4L2_STD_PAL_N,
 389                 .name           = "PAL-N",
 390                 .Fsc            = 35468950,
 391                 .swidth         = 768,
 392                 .sheight        = 576,
 393                 .totalwidth     = 1135,
 394                 .adelay         = 0x7f,
 395                 .bdelay         = 0x72,
 396                 .iform          = (BT848_IFORM_PAL_N|BT848_IFORM_XT1),
 397                 .scaledtwidth   = 944,
 398                 .hdelayx1       = 186,
 399                 .hactivex1      = 922,
 400                 .vdelay         = 0x20,
 401                 .vbipack        = 144,
 402                 .sram           = -1,
 403                 .vbistart       = { 7, 320 },
 404                 CROPCAP(/* minhdelayx1 */ 68,
 405                         /* hdelayx1 */ 186,
 406                         /* swidth */ (768 * 1135 + 944 / 2) / 944,
 407                         /* totalwidth */ 1135,
 408                         /* sqwidth */ 944,
 409                         /* vdelay */ 0x20,
 410                         /* sheight */ 576,
 411                         /* videostart0 */ 23)
 412         },{
 413                 .v4l2_id        = V4L2_STD_NTSC_M_JP,
 414                 .name           = "NTSC-JP",
 415                 .Fsc            = 28636363,
 416                 .swidth         = 640,
 417                 .sheight        = 480,
 418                 .totalwidth     = 910,
 419                 .adelay         = 0x68,
 420                 .bdelay         = 0x5d,
 421                 .iform          = (BT848_IFORM_NTSC_J|BT848_IFORM_XT0),
 422                 .scaledtwidth   = 780,
 423                 .hdelayx1       = 135,
 424                 .hactivex1      = 754,
 425                 .vdelay         = 0x16,
 426                 .vbipack        = 144,
 427                 .sram           = -1,
 428                 .vbistart       = { 10, 273 },
 429                 CROPCAP(/* minhdelayx1 */ 68,
 430                         /* hdelayx1 */ 135,
 431                         /* swidth */ (640 * 910 + 780 / 2) / 780,
 432                         /* totalwidth */ 910,
 433                         /* sqwidth */ 780,
 434                         /* vdelay */ 0x16,
 435                         /* sheight */ 480,
 436                         /* videostart0 */ 23)
 437         },{
 438                 /* that one hopefully works with the strange timing
 439                  * which video recorders produce when playing a NTSC
 440                  * tape on a PAL TV ... */
 441                 .v4l2_id        = V4L2_STD_PAL_60,
 442                 .name           = "PAL-60",
 443                 .Fsc            = 35468950,
 444                 .swidth         = 924,
 445                 .sheight        = 480,
 446                 .totalwidth     = 1135,
 447                 .adelay         = 0x7f,
 448                 .bdelay         = 0x72,
 449                 .iform          = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1),
 450                 .scaledtwidth   = 1135,
 451                 .hdelayx1       = 186,
 452                 .hactivex1      = 924,
 453                 .vdelay         = 0x1a,
 454                 .vbipack        = 255,
 455                 .vtotal         = 524,
 456                 .sram           = -1,
 457                 .vbistart       = { 10, 273 },
 458                 CROPCAP(/* minhdelayx1 */ 68,
 459                         /* hdelayx1 */ 186,
 460                         /* swidth */ 924,
 461                         /* totalwidth */ 1135,
 462                         /* sqwidth */ 944,
 463                         /* vdelay */ 0x1a,
 464                         /* sheight */ 480,
 465                         /* videostart0 */ 23)
 466         }
 467 };
 468 static const unsigned int BTTV_TVNORMS = ARRAY_SIZE(bttv_tvnorms);
 469
 470 /* ----------------------------------------------------------------------- */
 471 /* bttv format list
 472    packed pixel formats must come first */
 473 static const struct bttv_format bttv_formats[] = {
 474         {
 475                 .name     = "8 bpp, gray",
 476                 .palette  = VIDEO_PALETTE_GREY,
 477                 .fourcc   = V4L2_PIX_FMT_GREY,
 478                 .btformat = BT848_COLOR_FMT_Y8,
 479                 .depth    = 8,
 480                 .flags    = FORMAT_FLAGS_PACKED,
 481         },{
 482                 .name     = "8 bpp, dithered color",
 483                 .palette  = VIDEO_PALETTE_HI240,
 484                 .fourcc   = V4L2_PIX_FMT_HI240,
 485                 .btformat = BT848_COLOR_FMT_RGB8,
 486                 .depth    = 8,
 487                 .flags    = FORMAT_FLAGS_PACKED | FORMAT_FLAGS_DITHER,
 488         },{
 489                 .name     = "15 bpp RGB, le",
 490                 .palette  = VIDEO_PALETTE_RGB555,
 491                 .fourcc   = V4L2_PIX_FMT_RGB555,
 492                 .btformat = BT848_COLOR_FMT_RGB15,
 493                 .depth    = 16,
 494                 .flags    = FORMAT_FLAGS_PACKED,
 495         },{
 496                 .name     = "15 bpp RGB, be",
 497                 .palette  = -1,
 498                 .fourcc   = V4L2_PIX_FMT_RGB555X,
 499                 .btformat = BT848_COLOR_FMT_RGB15,
 500                 .btswap   = 0x03, /* byteswap */
 501                 .depth    = 16,
 502                 .flags    = FORMAT_FLAGS_PACKED,
 503         },{
 504                 .name     = "16 bpp RGB, le",
 505                 .palette  = VIDEO_PALETTE_RGB565,
 506                 .fourcc   = V4L2_PIX_FMT_RGB565,
 507                 .btformat = BT848_COLOR_FMT_RGB16,
 508                 .depth    = 16,
 509                 .flags    = FORMAT_FLAGS_PACKED,
 510         },{
 511                 .name     = "16 bpp RGB, be",
 512                 .palette  = -1,
 513                 .fourcc   = V4L2_PIX_FMT_RGB565X,
 514                 .btformat = BT848_COLOR_FMT_RGB16,
 515                 .btswap   = 0x03, /* byteswap */
 516                 .depth    = 16,
 517                 .flags    = FORMAT_FLAGS_PACKED,
 518         },{
 519                 .name     = "24 bpp RGB, le",
 520                 .palette  = VIDEO_PALETTE_RGB24,
 521                 .fourcc   = V4L2_PIX_FMT_BGR24,
 522                 .btformat = BT848_COLOR_FMT_RGB24,
 523                 .depth    = 24,
 524                 .flags    = FORMAT_FLAGS_PACKED,
 525         },{
 526                 .name     = "32 bpp RGB, le",
 527                 .palette  = VIDEO_PALETTE_RGB32,
 528                 .fourcc   = V4L2_PIX_FMT_BGR32,
 529                 .btformat = BT848_COLOR_FMT_RGB32,
 530                 .depth    = 32,
 531                 .flags    = FORMAT_FLAGS_PACKED,
 532         },{
 533                 .name     = "32 bpp RGB, be",
 534                 .palette  = -1,
 535                 .fourcc   = V4L2_PIX_FMT_RGB32,
 536                 .btformat = BT848_COLOR_FMT_RGB32,
 537                 .btswap   = 0x0f, /* byte+word swap */
 538                 .depth    = 32,
 539                 .flags    = FORMAT_FLAGS_PACKED,
 540         },{
 541                 .name     = "4:2:2, packed, YUYV",
 542                 .palette  = VIDEO_PALETTE_YUV422,
 543                 .fourcc   = V4L2_PIX_FMT_YUYV,
 544                 .btformat = BT848_COLOR_FMT_YUY2,
 545                 .depth    = 16,
 546                 .flags    = FORMAT_FLAGS_PACKED,
 547         },{
 548                 .name     = "4:2:2, packed, YUYV",
 549                 .palette  = VIDEO_PALETTE_YUYV,
 550                 .fourcc   = V4L2_PIX_FMT_YUYV,
 551                 .btformat = BT848_COLOR_FMT_YUY2,
 552                 .depth    = 16,
 553                 .flags    = FORMAT_FLAGS_PACKED,
 554         },{
 555                 .name     = "4:2:2, packed, UYVY",
 556                 .palette  = VIDEO_PALETTE_UYVY,
 557                 .fourcc   = V4L2_PIX_FMT_UYVY,
 558                 .btformat = BT848_COLOR_FMT_YUY2,
 559                 .btswap   = 0x03, /* byteswap */
 560                 .depth    = 16,
 561                 .flags    = FORMAT_FLAGS_PACKED,
 562         },{
 563                 .name     = "4:2:2, planar, Y-Cb-Cr",
 564                 .palette  = VIDEO_PALETTE_YUV422P,
 565                 .fourcc   = V4L2_PIX_FMT_YUV422P,
 566                 .btformat = BT848_COLOR_FMT_YCrCb422,
 567                 .depth    = 16,
 568                 .flags    = FORMAT_FLAGS_PLANAR,
 569                 .hshift   = 1,
 570                 .vshift   = 0,
 571         },{
 572                 .name     = "4:2:0, planar, Y-Cb-Cr",
 573                 .palette  = VIDEO_PALETTE_YUV420P,
 574                 .fourcc   = V4L2_PIX_FMT_YUV420,
 575                 .btformat = BT848_COLOR_FMT_YCrCb422,
 576                 .depth    = 12,
 577                 .flags    = FORMAT_FLAGS_PLANAR,
 578                 .hshift   = 1,
 579                 .vshift   = 1,
 580         },{
 581                 .name     = "4:2:0, planar, Y-Cr-Cb",
 582                 .palette  = -1,
 583                 .fourcc   = V4L2_PIX_FMT_YVU420,
 584                 .btformat = BT848_COLOR_FMT_YCrCb422,
 585                 .depth    = 12,
 586                 .flags    = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb,
 587                 .hshift   = 1,
 588                 .vshift   = 1,
 589         },{
 590                 .name     = "4:1:1, planar, Y-Cb-Cr",
 591                 .palette  = VIDEO_PALETTE_YUV411P,
 592                 .fourcc   = V4L2_PIX_FMT_YUV411P,
 593                 .btformat = BT848_COLOR_FMT_YCrCb411,
 594                 .depth    = 12,
 595                 .flags    = FORMAT_FLAGS_PLANAR,
 596                 .hshift   = 2,
 597                 .vshift   = 0,
 598         },{
 599                 .name     = "4:1:0, planar, Y-Cb-Cr",
 600                 .palette  = VIDEO_PALETTE_YUV410P,
 601                 .fourcc   = V4L2_PIX_FMT_YUV410,
 602                 .btformat = BT848_COLOR_FMT_YCrCb411,
 603                 .depth    = 9,
 604                 .flags    = FORMAT_FLAGS_PLANAR,
 605                 .hshift   = 2,
 606                 .vshift   = 2,
 607         },{
 608                 .name     = "4:1:0, planar, Y-Cr-Cb",
 609                 .palette  = -1,
 610                 .fourcc   = V4L2_PIX_FMT_YVU410,
 611                 .btformat = BT848_COLOR_FMT_YCrCb411,
 612                 .depth    = 9,
 613                 .flags    = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb,
 614                 .hshift   = 2,
 615                 .vshift   = 2,
 616         },{
 617                 .name     = "raw scanlines",
 618                 .palette  = VIDEO_PALETTE_RAW,
 619                 .fourcc   = -1,
 620                 .btformat = BT848_COLOR_FMT_RAW,
 621                 .depth    = 8,
 622                 .flags    = FORMAT_FLAGS_RAW,
 623         }
 624 };
 625 static const unsigned int BTTV_FORMATS = ARRAY_SIZE(bttv_formats);
 626
 627 /* ----------------------------------------------------------------------- */
 628
 629 #define V4L2_CID_PRIVATE_CHROMA_AGC  (V4L2_CID_PRIVATE_BASE + 0)
 630 #define V4L2_CID_PRIVATE_COMBFILTER  (V4L2_CID_PRIVATE_BASE + 1)
 631 #define V4L2_CID_PRIVATE_AUTOMUTE    (V4L2_CID_PRIVATE_BASE + 2)
 632 #define V4L2_CID_PRIVATE_LUMAFILTER  (V4L2_CID_PRIVATE_BASE + 3)
 633 #define V4L2_CID_PRIVATE_AGC_CRUSH   (V4L2_CID_PRIVATE_BASE + 4)
 634 #define V4L2_CID_PRIVATE_VCR_HACK    (V4L2_CID_PRIVATE_BASE + 5)
 635 #define V4L2_CID_PRIVATE_WHITECRUSH_UPPER   (V4L2_CID_PRIVATE_BASE + 6)
 636 #define V4L2_CID_PRIVATE_WHITECRUSH_LOWER   (V4L2_CID_PRIVATE_BASE + 7)
 637 #define V4L2_CID_PRIVATE_UV_RATIO    (V4L2_CID_PRIVATE_BASE + 8)
 638 #define V4L2_CID_PRIVATE_FULL_LUMA_RANGE    (V4L2_CID_PRIVATE_BASE + 9)
 639 #define V4L2_CID_PRIVATE_CORING      (V4L2_CID_PRIVATE_BASE + 10)
 640 #define V4L2_CID_PRIVATE_LASTP1      (V4L2_CID_PRIVATE_BASE + 11)
 641
 642 static const struct v4l2_queryctrl no_ctl = {
 643         .name  = "42",
 644         .flags = V4L2_CTRL_FLAG_DISABLED,
 645 };
 646 static const struct v4l2_queryctrl bttv_ctls[] = {
 647         /* --- video --- */
 648         {
 649                 .id            = V4L2_CID_BRIGHTNESS,
 650                 .name          = "Brightness",
 651                 .minimum       = 0,
 652                 .maximum       = 65535,
 653                 .step          = 256,
 654                 .default_value = 32768,
 655                 .type          = V4L2_CTRL_TYPE_INTEGER,
 656         },{
 657                 .id            = V4L2_CID_CONTRAST,
 658                 .name          = "Contrast",
 659                 .minimum       = 0,
 660                 .maximum       = 65535,
 661                 .step          = 128,
 662                 .default_value = 32768,
 663                 .type          = V4L2_CTRL_TYPE_INTEGER,
 664         },{
 665                 .id            = V4L2_CID_SATURATION,
 666                 .name          = "Saturation",
 667                 .minimum       = 0,
 668                 .maximum       = 65535,
 669                 .step          = 128,
 670                 .default_value = 32768,
 671                 .type          = V4L2_CTRL_TYPE_INTEGER,
 672         },{
 673                 .id            = V4L2_CID_HUE,
 674                 .name          = "Hue",
 675                 .minimum       = 0,
 676                 .maximum       = 65535,
 677                 .step          = 256,
 678                 .default_value = 32768,
 679                 .type          = V4L2_CTRL_TYPE_INTEGER,
 680         },
 681         /* --- audio --- */
 682         {
 683                 .id            = V4L2_CID_AUDIO_MUTE,
 684                 .name          = "Mute",
 685                 .minimum       = 0,
 686                 .maximum       = 1,
 687                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 688         },{
 689                 .id            = V4L2_CID_AUDIO_VOLUME,
 690                 .name          = "Volume",
 691                 .minimum       = 0,
 692                 .maximum       = 65535,
 693                 .step          = 65535/100,
 694                 .default_value = 65535,
 695                 .type          = V4L2_CTRL_TYPE_INTEGER,
 696         },{
 697                 .id            = V4L2_CID_AUDIO_BALANCE,
 698                 .name          = "Balance",
 699                 .minimum       = 0,
 700                 .maximum       = 65535,
 701                 .step          = 65535/100,
 702                 .default_value = 32768,
 703                 .type          = V4L2_CTRL_TYPE_INTEGER,
 704         },{
 705                 .id            = V4L2_CID_AUDIO_BASS,
 706                 .name          = "Bass",
 707                 .minimum       = 0,
 708                 .maximum       = 65535,
 709                 .step          = 65535/100,
 710                 .default_value = 32768,
 711                 .type          = V4L2_CTRL_TYPE_INTEGER,
 712         },{
 713                 .id            = V4L2_CID_AUDIO_TREBLE,
 714                 .name          = "Treble",
 715                 .minimum       = 0,
 716                 .maximum       = 65535,
 717                 .step          = 65535/100,
 718                 .default_value = 32768,
 719                 .type          = V4L2_CTRL_TYPE_INTEGER,
 720         },
 721         /* --- private --- */
 722         {
 723                 .id            = V4L2_CID_PRIVATE_CHROMA_AGC,
 724                 .name          = "chroma agc",
 725                 .minimum       = 0,
 726                 .maximum       = 1,
 727                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 728         },{
 729                 .id            = V4L2_CID_PRIVATE_COMBFILTER,
 730                 .name          = "combfilter",
 731                 .minimum       = 0,
 732                 .maximum       = 1,
 733                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 734         },{
 735                 .id            = V4L2_CID_PRIVATE_AUTOMUTE,
 736                 .name          = "automute",
 737                 .minimum       = 0,
 738                 .maximum       = 1,
 739                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 740         },{
 741                 .id            = V4L2_CID_PRIVATE_LUMAFILTER,
 742                 .name          = "luma decimation filter",
 743                 .minimum       = 0,
 744                 .maximum       = 1,
 745                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 746         },{
 747                 .id            = V4L2_CID_PRIVATE_AGC_CRUSH,
 748                 .name          = "agc crush",
 749                 .minimum       = 0,
 750                 .maximum       = 1,
 751                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 752         },{
 753                 .id            = V4L2_CID_PRIVATE_VCR_HACK,
 754                 .name          = "vcr hack",
 755                 .minimum       = 0,
 756                 .maximum       = 1,
 757                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 758         },{
 759                 .id            = V4L2_CID_PRIVATE_WHITECRUSH_UPPER,
 760                 .name          = "whitecrush upper",
 761                 .minimum       = 0,
 762                 .maximum       = 255,
 763                 .step          = 1,
 764                 .default_value = 0xCF,
 765                 .type          = V4L2_CTRL_TYPE_INTEGER,
 766         },{
 767                 .id            = V4L2_CID_PRIVATE_WHITECRUSH_LOWER,
 768                 .name          = "whitecrush lower",
 769                 .minimum       = 0,
 770                 .maximum       = 255,
 771                 .step          = 1,
 772                 .default_value = 0x7F,
 773                 .type          = V4L2_CTRL_TYPE_INTEGER,
 774         },{
 775                 .id            = V4L2_CID_PRIVATE_UV_RATIO,
 776                 .name          = "uv ratio",
 777                 .minimum       = 0,
 778                 .maximum       = 100,
 779                 .step          = 1,
 780                 .default_value = 50,
 781                 .type          = V4L2_CTRL_TYPE_INTEGER,
 782         },{
 783                 .id            = V4L2_CID_PRIVATE_FULL_LUMA_RANGE,
 784                 .name          = "full luma range",
 785                 .minimum       = 0,
 786                 .maximum       = 1,
 787                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 788         },{
 789                 .id            = V4L2_CID_PRIVATE_CORING,
 790                 .name          = "coring",
 791                 .minimum       = 0,
 792                 .maximum       = 3,
 793                 .step          = 1,
 794                 .default_value = 0,
 795                 .type          = V4L2_CTRL_TYPE_INTEGER,
 796         }
 797
 798
 799
 800 };
 801 static const int BTTV_CTLS = ARRAY_SIZE(bttv_ctls);
 802
 803 /* ----------------------------------------------------------------------- */
 804 /* resource management                                                     */
 805
 806 /*
 807    RESOURCE_    allocated by                freed by
 808
 809    VIDEO_READ   bttv_read 1)                bttv_read 2)
 810
 811    VIDEO_STREAM VIDIOC_STREAMON             VIDIOC_STREAMOFF
 812                  VIDIOC_QBUF 1)              bttv_release
 813                  VIDIOCMCAPTURE 1)
 814
 815    OVERLAY       VIDIOCCAPTURE on            VIDIOCCAPTURE off
 816                  VIDIOC_OVERLAY on           VIDIOC_OVERLAY off
 817                  3)                          bttv_release
 818
 819    VBI           VIDIOC_STREAMON             VIDIOC_STREAMOFF
 820                  VIDIOC_QBUF 1)              bttv_release
 821                  bttv_read, bttv_poll 1) 4)
 822
 823    1) The resource must be allocated when we enter buffer prepare functions
 824       and remain allocated while buffers are in the DMA queue.
 825    2) This is a single frame read.
 826    3) VIDIOC_S_FBUF and VIDIOC_S_FMT (OVERLAY) still work when
 827       RESOURCE_OVERLAY is allocated.
 828    4) This is a continuous read, implies VIDIOC_STREAMON.
 829
 830    Note this driver permits video input and standard changes regardless if
 831    resources are allocated.
 832 */
 833
 834 #define VBI_RESOURCES (RESOURCE_VBI)
 835 #define VIDEO_RESOURCES (RESOURCE_VIDEO_READ | \
 836                          RESOURCE_VIDEO_STREAM | \
 837                          RESOURCE_OVERLAY)
 838
 839 static
 840 int check_alloc_btres(struct bttv *btv, struct bttv_fh *fh, int bit)
 841 {
 842         int xbits; /* mutual exclusive resources */
 843
 844         if (fh->resources & bit)
 845                 /* have it already allocated */
 846                 return 1;
 847
 848         xbits = bit;
 849         if (bit & (RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM))
 850                 xbits |= RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM;
 851
 852         /* is it free? */
 853         mutex_lock(&btv->lock);
 854         if (btv->resources & xbits) {
 855                 /* no, someone else uses it */
 856                 goto fail;
 857         }
 858
 859         if ((bit & VIDEO_RESOURCES)
 860             && 0 == (btv->resources & VIDEO_RESOURCES)) {
 861                 /* Do crop - use current, don't - use default parameters. */
 862                 __s32 top = btv->crop[!!fh->do_crop].rect.top;
 863
 864                 if (btv->vbi_end > top)
 865                         goto fail;
 866
 867                 /* We cannot capture the same line as video and VBI data.
 868                    Claim scan lines crop[].rect.top to bottom. */
 869                 btv->crop_start = top;
 870         } else if (bit & VBI_RESOURCES) {
 871                 __s32 end = fh->vbi_fmt.end;
 872
 873                 if (end > btv->crop_start)
 874                         goto fail;
 875
 876                 /* Claim scan lines above fh->vbi_fmt.end. */
 877                 btv->vbi_end = end;
 878         }
 879
 880         /* it's free, grab it */
 881         fh->resources  |= bit;
 882         btv->resources |= bit;
 883         mutex_unlock(&btv->lock);
 884         return 1;
 885
 886  fail:
 887         mutex_unlock(&btv->lock);
 888         return 0;
 889 }
 890
 891 static
 892 int check_btres(struct bttv_fh *fh, int bit)
 893 {
 894         return (fh->resources & bit);
 895 }
 896
 897 static
 898 int locked_btres(struct bttv *btv, int bit)
 899 {
 900         return (btv->resources & bit);
 901 }
 902
 903 /* Call with btv->lock down. */
 904 static void
 905 disclaim_vbi_lines(struct bttv *btv)
 906 {
 907         btv->vbi_end = 0;
 908 }
 909
 910 /* Call with btv->lock down. */
 911 static void
 912 disclaim_video_lines(struct bttv *btv)
 913 {
 914         const struct bttv_tvnorm *tvnorm;
 915         u8 crop;
 916
 917         tvnorm = &bttv_tvnorms[btv->tvnorm];
 918         btv->crop_start = tvnorm->cropcap.bounds.top
 919                 + tvnorm->cropcap.bounds.height;
 920
 921         /* VBI capturing ends at VDELAY, start of video capturing, no
 922            matter how many lines the VBI RISC program expects. When video
 923            capturing is off, it shall no longer "preempt" VBI capturing,
 924            so we set VDELAY to maximum. */
 925         crop = btread(BT848_E_CROP) | 0xc0;
 926         btwrite(crop, BT848_E_CROP);
 927         btwrite(0xfe, BT848_E_VDELAY_LO);
 928         btwrite(crop, BT848_O_CROP);
 929         btwrite(0xfe, BT848_O_VDELAY_LO);
 930 }
 931
 932 static
 933 void free_btres(struct bttv *btv, struct bttv_fh *fh, int bits)
 934 {
 935         if ((fh->resources & bits) != bits) {
 936                 /* trying to free ressources not allocated by us ... */
 937                 printk("bttv: BUG! (btres)\n");
 938         }
 939         mutex_lock(&btv->lock);
 940         fh->resources  &= ~bits;
 941         btv->resources &= ~bits;
 942
 943         bits = btv->resources;
 944
 945         if (0 == (bits & VIDEO_RESOURCES))
 946                 disclaim_video_lines(btv);
 947
 948         if (0 == (bits & VBI_RESOURCES))
 949                 disclaim_vbi_lines(btv);
 950
 951         mutex_unlock(&btv->lock);
 952 }
 953
 954 /* ----------------------------------------------------------------------- */
 955 /* If Bt848a or Bt849, use PLL for PAL/SECAM and crystal for NTSC          */
 956
 957 /* Frequency = (F_input / PLL_X) * PLL_I.PLL_F/PLL_C
 958    PLL_X = Reference pre-divider (0=1, 1=2)
 959    PLL_C = Post divider (0=6, 1=4)
 960    PLL_I = Integer input
 961    PLL_F = Fractional input
 962
 963    F_input = 28.636363 MHz:
 964    PAL (CLKx2 = 35.46895 MHz): PLL_X = 1, PLL_I = 0x0E, PLL_F = 0xDCF9, PLL_C = 0
 965 */
 966
 967 static void set_pll_freq(struct bttv *btv, unsigned int fin, unsigned int fout)
 968 {
 969         unsigned char fl, fh, fi;
 970
 971         /* prevent overflows */
 972         fin/=4;
 973         fout/=4;
 974
 975         fout*=12;
 976         fi=fout/fin;
 977
 978         fout=(fout%fin)*256;
 979         fh=fout/fin;
 980
 981         fout=(fout%fin)*256;
 982         fl=fout/fin;
 983
 984         btwrite(fl, BT848_PLL_F_LO);
 985         btwrite(fh, BT848_PLL_F_HI);
 986         btwrite(fi|BT848_PLL_X, BT848_PLL_XCI);
 987 }
 988
 989 static void set_pll(struct bttv *btv)
 990 {
 991         int i;
 992
 993         if (!btv->pll.pll_crystal)
 994                 return;
 995
 996         if (btv->pll.pll_ofreq == btv->pll.pll_current) {
 997                 dprintk("bttv%d: PLL: no change required\n",btv->c.nr);
 998                 return;
 999         }
1000
1001         if (btv->pll.pll_ifreq == btv->pll.pll_ofreq) {
1002                 /* no PLL needed */
1003                 if (btv->pll.pll_current == 0)
1004                         return;
1005                 bttv_printk(KERN_INFO "bttv%d: PLL can sleep, using XTAL (%d).\n",
1006                         btv->c.nr,btv->pll.pll_ifreq);
1007                 btwrite(0x00,BT848_TGCTRL);
1008                 btwrite(0x00,BT848_PLL_XCI);
1009                 btv->pll.pll_current = 0;
1010                 return;
1011         }
1012
1013         bttv_printk(KERN_INFO "bttv%d: PLL: %d => %d ",btv->c.nr,
1014                 btv->pll.pll_ifreq, btv->pll.pll_ofreq);
1015         set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq);
1016
1017         for (i=0; i<10; i++) {
1018                 /*  Let other people run while the PLL stabilizes */
1019                 bttv_printk(".");
1020                 msleep(10);
1021
1022                 if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
1023                         btwrite(0,BT848_DSTATUS);
1024                 } else {
1025                         btwrite(0x08,BT848_TGCTRL);
1026                         btv->pll.pll_current = btv->pll.pll_ofreq;
1027                         bttv_printk(" ok\n");
1028                         return;
1029                 }
1030         }
1031         btv->pll.pll_current = -1;
1032         bttv_printk("failed\n");
1033         return;
1034 }
1035
1036 /* used to switch between the bt848's analog/digital video capture modes */
1037 static void bt848A_set_timing(struct bttv *btv)
1038 {
1039         int i, len;
1040         int table_idx = bttv_tvnorms[btv->tvnorm].sram;
1041         int fsc       = bttv_tvnorms[btv->tvnorm].Fsc;
1042
1043         if (UNSET == bttv_tvcards[btv->c.type].muxsel[btv->input]) {
1044                 dprintk("bttv%d: load digital timing table (table_idx=%d)\n",
1045                         btv->c.nr,table_idx);
1046
1047                 /* timing change...reset timing generator address */
1048                 btwrite(0x00, BT848_TGCTRL);
1049                 btwrite(0x02, BT848_TGCTRL);
1050                 btwrite(0x00, BT848_TGCTRL);
1051
1052                 len=SRAM_Table[table_idx][0];
1053                 for(i = 1; i <= len; i++)
1054                         btwrite(SRAM_Table[table_idx][i],BT848_TGLB);
1055                 btv->pll.pll_ofreq = 27000000;
1056
1057                 set_pll(btv);
1058                 btwrite(0x11, BT848_TGCTRL);
1059                 btwrite(0x41, BT848_DVSIF);
1060         } else {
1061                 btv->pll.pll_ofreq = fsc;
1062                 set_pll(btv);
1063                 btwrite(0x0, BT848_DVSIF);
1064         }
1065 }
1066
1067 /* ----------------------------------------------------------------------- */
1068
1069 static void bt848_bright(struct bttv *btv, int bright)
1070 {
1071         int value;
1072
1073         // printk("bttv: set bright: %d\n",bright); // DEBUG
1074         btv->bright = bright;
1075
1076         /* We want -128 to 127 we get 0-65535 */
1077         value = (bright >> 8) - 128;
1078         btwrite(value & 0xff, BT848_BRIGHT);
1079 }
1080
1081 static void bt848_hue(struct bttv *btv, int hue)
1082 {
1083         int value;
1084
1085         btv->hue = hue;
1086
1087         /* -128 to 127 */
1088         value = (hue >> 8) - 128;
1089         btwrite(value & 0xff, BT848_HUE);
1090 }
1091
1092 static void bt848_contrast(struct bttv *btv, int cont)
1093 {
1094         int value,hibit;
1095
1096         btv->contrast = cont;
1097
1098         /* 0-511 */
1099         value = (cont  >> 7);
1100         hibit = (value >> 6) & 4;
1101         btwrite(value & 0xff, BT848_CONTRAST_LO);
1102         btaor(hibit, ~4, BT848_E_CONTROL);
1103         btaor(hibit, ~4, BT848_O_CONTROL);
1104 }
1105
1106 static void bt848_sat(struct bttv *btv, int color)
1107 {
1108         int val_u,val_v,hibits;
1109
1110         btv->saturation = color;
1111
1112         /* 0-511 for the color */
1113         val_u   = ((color * btv->opt_uv_ratio) / 50) >> 7;
1114         val_v   = (((color * (100 - btv->opt_uv_ratio) / 50) >>7)*180L)/254;
1115         hibits  = (val_u >> 7) & 2;
1116         hibits |= (val_v >> 8) & 1;
1117         btwrite(val_u & 0xff, BT848_SAT_U_LO);
1118         btwrite(val_v & 0xff, BT848_SAT_V_LO);
1119         btaor(hibits, ~3, BT848_E_CONTROL);
1120         btaor(hibits, ~3, BT848_O_CONTROL);
1121 }
1122
1123 /* ----------------------------------------------------------------------- */
1124
1125 static int
1126 video_mux(struct bttv *btv, unsigned int input)
1127 {
1128         int mux,mask2;
1129
1130         if (input >= bttv_tvcards[btv->c.type].video_inputs)
1131                 return -EINVAL;
1132
1133         /* needed by RemoteVideo MX */
1134         mask2 = bttv_tvcards[btv->c.type].gpiomask2;
1135         if (mask2)
1136                 gpio_inout(mask2,mask2);
1137
1138         if (input == btv->svhs)  {
1139                 btor(BT848_CONTROL_COMP, BT848_E_CONTROL);
1140                 btor(BT848_CONTROL_COMP, BT848_O_CONTROL);
1141         } else {
1142                 btand(~BT848_CONTROL_COMP, BT848_E_CONTROL);
1143                 btand(~BT848_CONTROL_COMP, BT848_O_CONTROL);
1144         }
1145         mux = bttv_tvcards[btv->c.type].muxsel[input] & 3;
1146         btaor(mux<<5, ~(3<<5), BT848_IFORM);
1147         dprintk(KERN_DEBUG "bttv%d: video mux: input=%d mux=%d\n",
1148                 btv->c.nr,input,mux);
1149
1150         /* card specific hook */
1151         if(bttv_tvcards[btv->c.type].muxsel_hook)
1152                 bttv_tvcards[btv->c.type].muxsel_hook (btv, input);
1153         return 0;
1154 }
1155
1156 static char *audio_modes[] = {
1157         "audio: tuner", "audio: radio", "audio: extern",
1158         "audio: intern", "audio: mute"
1159 };
1160
1161 static int
1162 audio_mux(struct bttv *btv, int input, int mute)
1163 {
1164         int gpio_val, signal;
1165         struct v4l2_control ctrl;
1166         struct i2c_client *c;
1167
1168         gpio_inout(bttv_tvcards[btv->c.type].gpiomask,
1169                    bttv_tvcards[btv->c.type].gpiomask);
1170         signal = btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC;
1171
1172         btv->mute = mute;
1173         btv->audio = input;
1174
1175         /* automute */
1176         mute = mute || (btv->opt_automute && !signal && !btv->radio_user);
1177
1178         if (mute)
1179                 gpio_val = bttv_tvcards[btv->c.type].gpiomute;
1180         else
1181                 gpio_val = bttv_tvcards[btv->c.type].gpiomux[input];
1182
1183         gpio_bits(bttv_tvcards[btv->c.type].gpiomask, gpio_val);
1184         if (bttv_gpio)
1185                 bttv_gpio_tracking(btv, audio_modes[mute ? 4 : input]);
1186         if (in_interrupt())
1187                 return 0;
1188
1189         ctrl.id = V4L2_CID_AUDIO_MUTE;
1190         ctrl.value = btv->mute;
1191         bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, &ctrl);
1192         c = btv->i2c_msp34xx_client;
1193         if (c) {
1194                 struct v4l2_routing route;
1195
1196                 /* Note: the inputs tuner/radio/extern/intern are translated
1197                    to msp routings. This assumes common behavior for all msp3400
1198                    based TV cards. When this assumption fails, then the
1199                    specific MSP routing must be added to the card table.
1200                    For now this is sufficient. */
1201                 switch (input) {
1202                 case TVAUDIO_INPUT_RADIO:
1203                         route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1204                                     MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1205                         break;
1206                 case TVAUDIO_INPUT_EXTERN:
1207                         route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
1208                                     MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1209                         break;
1210                 case TVAUDIO_INPUT_INTERN:
1211                         /* Yes, this is the same input as for RADIO. I doubt
1212                            if this is ever used. The only board with an INTERN
1213                            input is the BTTV_BOARD_AVERMEDIA98. I wonder how
1214                            that was tested. My guess is that the whole INTERN
1215                            input does not work. */
1216                         route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1217                                     MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1218                         break;
1219                 case TVAUDIO_INPUT_TUNER:
1220                 default:
1221                         /* This is the only card that uses TUNER2, and afaik,
1222                            is the only difference between the VOODOOTV_FM
1223                            and VOODOOTV_200 */
1224                         if (btv->c.type == BTTV_BOARD_VOODOOTV_200)
1225                                 route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER2, \
1226                                         MSP_DSP_IN_TUNER, MSP_DSP_IN_TUNER);
1227                         else
1228                                 route.input = MSP_INPUT_DEFAULT;
1229                         break;
1230                 }
1231                 route.output = MSP_OUTPUT_DEFAULT;
1232                 c->driver->command(c, VIDIOC_INT_S_AUDIO_ROUTING, &route);
1233         }
1234         c = btv->i2c_tvaudio_client;
1235         if (c) {
1236                 struct v4l2_routing route;
1237
1238                 route.input = input;
1239                 route.output = 0;
1240                 c->driver->command(c, VIDIOC_INT_S_AUDIO_ROUTING, &route);
1241         }
1242         return 0;
1243 }
1244
1245 static inline int
1246 audio_mute(struct bttv *btv, int mute)
1247 {
1248         return audio_mux(btv, btv->audio, mute);
1249 }
1250
1251 static inline int
1252 audio_input(struct bttv *btv, int input)
1253 {
1254         return audio_mux(btv, input, btv->mute);
1255 }
1256
1257 static void
1258 i2c_vidiocschan(struct bttv *btv)
1259 {
1260         v4l2_std_id std = bttv_tvnorms[btv->tvnorm].v4l2_id;
1261
1262         bttv_call_i2c_clients(btv, VIDIOC_S_STD, &std);
1263         if (btv->c.type == BTTV_BOARD_VOODOOTV_FM || btv->c.type == BTTV_BOARD_VOODOOTV_200)
1264                 bttv_tda9880_setnorm(btv,btv->tvnorm);
1265 }
1266
1267 static void
1268 bttv_crop_calc_limits(struct bttv_crop *c)
1269 {
1270         /* Scale factor min. 1:1, max. 16:1. Min. image size
1271            48 x 32. Scaled width must be a multiple of 4. */
1272
1273         if (1) {
1274                 /* For bug compatibility with VIDIOCGCAP and image
1275                    size checks in earlier driver versions. */
1276                 c->min_scaled_width = 48;
1277                 c->min_scaled_height = 32;
1278         } else {
1279                 c->min_scaled_width =
1280                         (max(48, c->rect.width >> 4) + 3) & ~3;
1281                 c->min_scaled_height =
1282                         max(32, c->rect.height >> 4);
1283         }
1284
1285         c->max_scaled_width  = c->rect.width & ~3;
1286         c->max_scaled_height = c->rect.height;
1287 }
1288
1289 static void
1290 bttv_crop_reset(struct bttv_crop *c, int norm)
1291 {
1292         c->rect = bttv_tvnorms[norm].cropcap.defrect;
1293         bttv_crop_calc_limits(c);
1294 }
1295
1296 /* Call with btv->lock down. */
1297 static int
1298 set_tvnorm(struct bttv *btv, unsigned int norm)
1299 {
1300         const struct bttv_tvnorm *tvnorm;
1301
1302         if (norm < 0 || norm >= BTTV_TVNORMS)
1303                 return -EINVAL;
1304
1305         tvnorm = &bttv_tvnorms[norm];
1306
1307         if (btv->tvnorm < 0 ||
1308             btv->tvnorm >= BTTV_TVNORMS ||
1309             0 != memcmp(&bttv_tvnorms[btv->tvnorm].cropcap,
1310                         &tvnorm->cropcap,
1311                         sizeof (tvnorm->cropcap))) {
1312                 bttv_crop_reset(&btv->crop[0], norm);
1313                 btv->crop[1] = btv->crop[0]; /* current = default */
1314
1315                 if (0 == (btv->resources & VIDEO_RESOURCES)) {
1316                         btv->crop_start = tvnorm->cropcap.bounds.top
1317                                 + tvnorm->cropcap.bounds.height;
1318                 }
1319         }
1320
1321         btv->tvnorm = norm;
1322
1323         btwrite(tvnorm->adelay, BT848_ADELAY);
1324         btwrite(tvnorm->bdelay, BT848_BDELAY);
1325         btaor(tvnorm->iform,~(BT848_IFORM_NORM|BT848_IFORM_XTBOTH),
1326               BT848_IFORM);
1327         btwrite(tvnorm->vbipack, BT848_VBI_PACK_SIZE);
1328         btwrite(1, BT848_VBI_PACK_DEL);
1329         bt848A_set_timing(btv);
1330
1331         switch (btv->c.type) {
1332         case BTTV_BOARD_VOODOOTV_FM:
1333         case BTTV_BOARD_VOODOOTV_200:
1334                 bttv_tda9880_setnorm(btv,norm);
1335                 break;
1336         }
1337         return 0;
1338 }
1339
1340 /* Call with btv->lock down. */
1341 static void
1342 set_input(struct bttv *btv, unsigned int input, unsigned int norm)
1343 {
1344         unsigned long flags;
1345
1346         btv->input = input;
1347         if (irq_iswitch) {
1348                 spin_lock_irqsave(&btv->s_lock,flags);
1349                 if (btv->curr.frame_irq) {
1350                         /* active capture -> delayed input switch */
1351                         btv->new_input = input;
1352                 } else {
1353                         video_mux(btv,input);
1354                 }
1355                 spin_unlock_irqrestore(&btv->s_lock,flags);
1356         } else {
1357                 video_mux(btv,input);
1358         }
1359         audio_input(btv,(input == bttv_tvcards[btv->c.type].tuner ?
1360                        TVAUDIO_INPUT_TUNER : TVAUDIO_INPUT_EXTERN));
1361         set_tvnorm(btv, norm);
1362         i2c_vidiocschan(btv);
1363 }
1364
1365 static void init_irqreg(struct bttv *btv)
1366 {
1367         /* clear status */
1368         btwrite(0xfffffUL, BT848_INT_STAT);
1369
1370         if (bttv_tvcards[btv->c.type].no_video) {
1371                 /* i2c only */
1372                 btwrite(BT848_INT_I2CDONE,
1373                         BT848_INT_MASK);
1374         } else {
1375                 /* full video */
1376                 btwrite((btv->triton1)  |
1377                         (btv->gpioirq ? BT848_INT_GPINT : 0) |
1378                         BT848_INT_SCERR |
1379                         (fdsr ? BT848_INT_FDSR : 0) |
1380                         BT848_INT_RISCI|BT848_INT_OCERR|BT848_INT_VPRES|
1381                         BT848_INT_FMTCHG|BT848_INT_HLOCK|
1382                         BT848_INT_I2CDONE,
1383                         BT848_INT_MASK);
1384         }
1385 }
1386
1387 static void init_bt848(struct bttv *btv)
1388 {
1389         int val;
1390
1391         if (bttv_tvcards[btv->c.type].no_video) {
1392                 /* very basic init only */
1393                 init_irqreg(btv);
1394                 return;
1395         }
1396
1397         btwrite(0x00, BT848_CAP_CTL);
1398         btwrite(BT848_COLOR_CTL_GAMMA, BT848_COLOR_CTL);
1399         btwrite(BT848_IFORM_XTAUTO | BT848_IFORM_AUTO, BT848_IFORM);
1400
1401         /* set planar and packed mode trigger points and         */
1402         /* set rising edge of inverted GPINTR pin as irq trigger */
1403         btwrite(BT848_GPIO_DMA_CTL_PKTP_32|
1404                 BT848_GPIO_DMA_CTL_PLTP1_16|
1405                 BT848_GPIO_DMA_CTL_PLTP23_16|
1406                 BT848_GPIO_DMA_CTL_GPINTC|
1407                 BT848_GPIO_DMA_CTL_GPINTI,
1408                 BT848_GPIO_DMA_CTL);
1409
1410         val = btv->opt_chroma_agc ? BT848_SCLOOP_CAGC : 0;
1411         btwrite(val, BT848_E_SCLOOP);
1412         btwrite(val, BT848_O_SCLOOP);
1413
1414         btwrite(0x20, BT848_E_VSCALE_HI);
1415         btwrite(0x20, BT848_O_VSCALE_HI);
1416         btwrite(BT848_ADC_RESERVED | (btv->opt_adc_crush ? BT848_ADC_CRUSH : 0),
1417                 BT848_ADC);
1418
1419         btwrite(whitecrush_upper, BT848_WC_UP);
1420         btwrite(whitecrush_lower, BT848_WC_DOWN);
1421
1422         if (btv->opt_lumafilter) {
1423                 btwrite(0, BT848_E_CONTROL);
1424                 btwrite(0, BT848_O_CONTROL);
1425         } else {
1426                 btwrite(BT848_CONTROL_LDEC, BT848_E_CONTROL);
1427                 btwrite(BT848_CONTROL_LDEC, BT848_O_CONTROL);
1428         }
1429
1430         bt848_bright(btv,   btv->bright);
1431         bt848_hue(btv,      btv->hue);
1432         bt848_contrast(btv, btv->contrast);
1433         bt848_sat(btv,      btv->saturation);
1434
1435         /* interrupt */
1436         init_irqreg(btv);
1437 }
1438
1439 static void bttv_reinit_bt848(struct bttv *btv)
1440 {
1441         unsigned long flags;
1442
1443         if (bttv_verbose)
1444                 printk(KERN_INFO "bttv%d: reset, reinitialize\n",btv->c.nr);
1445         spin_lock_irqsave(&btv->s_lock,flags);
1446         btv->errors=0;
1447         bttv_set_dma(btv,0);
1448         spin_unlock_irqrestore(&btv->s_lock,flags);
1449
1450         init_bt848(btv);
1451         btv->pll.pll_current = -1;
1452         set_input(btv, btv->input, btv->tvnorm);
1453 }
1454
1455 static int get_control(struct bttv *btv, struct v4l2_control *c)
1456 {
1457         struct video_audio va;
1458         int i;
1459
1460         for (i = 0; i < BTTV_CTLS; i++)
1461                 if (bttv_ctls[i].id == c->id)
1462                         break;
1463         if (i == BTTV_CTLS)
1464                 return -EINVAL;
1465         if (btv->audio_hook && i >= 4 && i <= 8) {
1466                 memset(&va,0,sizeof(va));
1467                 btv->audio_hook(btv,&va,0);
1468                 switch (c->id) {
1469                 case V4L2_CID_AUDIO_MUTE:
1470                         c->value = (VIDEO_AUDIO_MUTE & va.flags) ? 1 : 0;
1471                         break;
1472                 case V4L2_CID_AUDIO_VOLUME:
1473                         c->value = va.volume;
1474                         break;
1475                 case V4L2_CID_AUDIO_BALANCE:
1476                         c->value = va.balance;
1477                         break;
1478                 case V4L2_CID_AUDIO_BASS:
1479                         c->value = va.bass;
1480                         break;
1481                 case V4L2_CID_AUDIO_TREBLE:
1482                         c->value = va.treble;
1483                         break;
1484                 }
1485                 return 0;
1486         }
1487         switch (c->id) {
1488         case V4L2_CID_BRIGHTNESS:
1489                 c->value = btv->bright;
1490                 break;
1491         case V4L2_CID_HUE:
1492                 c->value = btv->hue;
1493                 break;
1494         case V4L2_CID_CONTRAST:
1495                 c->value = btv->contrast;
1496                 break;
1497         case V4L2_CID_SATURATION:
1498                 c->value = btv->saturation;
1499                 break;
1500
1501         case V4L2_CID_AUDIO_MUTE:
1502         case V4L2_CID_AUDIO_VOLUME:
1503         case V4L2_CID_AUDIO_BALANCE:
1504         case V4L2_CID_AUDIO_BASS:
1505         case V4L2_CID_AUDIO_TREBLE:
1506                 bttv_call_i2c_clients(btv,VIDIOC_G_CTRL,c);
1507                 break;
1508
1509         case V4L2_CID_PRIVATE_CHROMA_AGC:
1510                 c->value = btv->opt_chroma_agc;
1511                 break;
1512         case V4L2_CID_PRIVATE_COMBFILTER:
1513                 c->value = btv->opt_combfilter;
1514                 break;
1515         case V4L2_CID_PRIVATE_LUMAFILTER:
1516                 c->value = btv->opt_lumafilter;
1517                 break;
1518         case V4L2_CID_PRIVATE_AUTOMUTE:
1519                 c->value = btv->opt_automute;
1520                 break;
1521         case V4L2_CID_PRIVATE_AGC_CRUSH:
1522                 c->value = btv->opt_adc_crush;
1523                 break;
1524         case V4L2_CID_PRIVATE_VCR_HACK:
1525                 c->value = btv->opt_vcr_hack;
1526                 break;
1527         case V4L2_CID_PRIVATE_WHITECRUSH_UPPER:
1528                 c->value = btv->opt_whitecrush_upper;
1529                 break;
1530         case V4L2_CID_PRIVATE_WHITECRUSH_LOWER:
1531                 c->value = btv->opt_whitecrush_lower;
1532                 break;
1533         case V4L2_CID_PRIVATE_UV_RATIO:
1534                 c->value = btv->opt_uv_ratio;
1535                 break;
1536         case V4L2_CID_PRIVATE_FULL_LUMA_RANGE:
1537                 c->value = btv->opt_full_luma_range;
1538                 break;
1539         case V4L2_CID_PRIVATE_CORING:
1540                 c->value = btv->opt_coring;
1541                 break;
1542         default:
1543                 return -EINVAL;
1544         }
1545         return 0;
1546 }
1547
1548 static int set_control(struct bttv *btv, struct v4l2_control *c)
1549 {
1550         struct video_audio va;
1551         int i,val;
1552
1553         for (i = 0; i < BTTV_CTLS; i++)
1554                 if (bttv_ctls[i].id == c->id)
1555                         break;
1556         if (i == BTTV_CTLS)
1557                 return -EINVAL;
1558         if (btv->audio_hook && i >= 4 && i <= 8) {
1559                 memset(&va,0,sizeof(va));
1560                 btv->audio_hook(btv,&va,0);
1561                 switch (c->id) {
1562                 case V4L2_CID_AUDIO_MUTE:
1563                         if (c->value) {
1564                                 va.flags |= VIDEO_AUDIO_MUTE;
1565                                 audio_mute(btv, 1);
1566                         } else {
1567                                 va.flags &= ~VIDEO_AUDIO_MUTE;
1568                                 audio_mute(btv, 0);
1569                         }
1570                         break;
1571
1572                 case V4L2_CID_AUDIO_VOLUME:
1573                         va.volume = c->value;
1574                         break;
1575                 case V4L2_CID_AUDIO_BALANCE:
1576                         va.balance = c->value;
1577                         break;
1578                 case V4L2_CID_AUDIO_BASS:
1579                         va.bass = c->value;
1580                         break;
1581                 case V4L2_CID_AUDIO_TREBLE:
1582                         va.treble = c->value;
1583                         break;
1584                 }
1585                 btv->audio_hook(btv,&va,1);
1586                 return 0;
1587         }
1588         switch (c->id) {
1589         case V4L2_CID_BRIGHTNESS:
1590                 bt848_bright(btv,c->value);
1591                 break;
1592         case V4L2_CID_HUE:
1593                 bt848_hue(btv,c->value);
1594                 break;
1595         case V4L2_CID_CONTRAST:
1596                 bt848_contrast(btv,c->value);
1597                 break;
1598         case V4L2_CID_SATURATION:
1599                 bt848_sat(btv,c->value);
1600                 break;
1601         case V4L2_CID_AUDIO_MUTE:
1602                 audio_mute(btv, c->value);
1603                 /* fall through */
1604         case V4L2_CID_AUDIO_VOLUME:
1605         case V4L2_CID_AUDIO_BALANCE:
1606         case V4L2_CID_AUDIO_BASS:
1607         case V4L2_CID_AUDIO_TREBLE:
1608                 bttv_call_i2c_clients(btv,VIDIOC_S_CTRL,c);
1609                 break;
1610
1611         case V4L2_CID_PRIVATE_CHROMA_AGC:
1612                 btv->opt_chroma_agc = c->value;
1613                 val = btv->opt_chroma_agc ? BT848_SCLOOP_CAGC : 0;
1614                 btwrite(val, BT848_E_SCLOOP);
1615                 btwrite(val, BT848_O_SCLOOP);
1616                 break;
1617         case V4L2_CID_PRIVATE_COMBFILTER:
1618                 btv->opt_combfilter = c->value;
1619                 break;
1620         case V4L2_CID_PRIVATE_LUMAFILTER:
1621                 btv->opt_lumafilter = c->value;
1622                 if (btv->opt_lumafilter) {
1623                         btand(~BT848_CONTROL_LDEC, BT848_E_CONTROL);
1624                         btand(~BT848_CONTROL_LDEC, BT848_O_CONTROL);
1625                 } else {
1626                         btor(BT848_CONTROL_LDEC, BT848_E_CONTROL);
1627                         btor(BT848_CONTROL_LDEC, BT848_O_CONTROL);
1628                 }
1629                 break;
1630         case V4L2_CID_PRIVATE_AUTOMUTE:
1631                 btv->opt_automute = c->value;
1632                 break;
1633         case V4L2_CID_PRIVATE_AGC_CRUSH:
1634                 btv->opt_adc_crush = c->value;
1635                 btwrite(BT848_ADC_RESERVED | (btv->opt_adc_crush ? BT848_ADC_CRUSH : 0),
1636                         BT848_ADC);
1637                 break;
1638         case V4L2_CID_PRIVATE_VCR_HACK:
1639                 btv->opt_vcr_hack = c->value;
1640                 break;
1641         case V4L2_CID_PRIVATE_WHITECRUSH_UPPER:
1642                 btv->opt_whitecrush_upper = c->value;
1643                 btwrite(c->value, BT848_WC_UP);
1644                 break;
1645         case V4L2_CID_PRIVATE_WHITECRUSH_LOWER:
1646                 btv->opt_whitecrush_lower = c->value;
1647                 btwrite(c->value, BT848_WC_DOWN);
1648                 break;
1649         case V4L2_CID_PRIVATE_UV_RATIO:
1650                 btv->opt_uv_ratio = c->value;
1651                 bt848_sat(btv, btv->saturation);
1652                 break;
1653         case V4L2_CID_PRIVATE_FULL_LUMA_RANGE:
1654                 btv->opt_full_luma_range = c->value;
1655                 btaor((c->value<<7), ~BT848_OFORM_RANGE, BT848_OFORM);
1656                 break;
1657         case V4L2_CID_PRIVATE_CORING:
1658                 btv->opt_coring = c->value;
1659                 btaor((c->value<<5), ~BT848_OFORM_CORE32, BT848_OFORM);
1660                 break;
1661         default:
1662                 return -EINVAL;
1663         }
1664         return 0;
1665 }
1666
1667 /* ----------------------------------------------------------------------- */
1668
1669 void bttv_gpio_tracking(struct bttv *btv, char *comment)
1670 {
1671         unsigned int outbits, data;
1672         outbits = btread(BT848_GPIO_OUT_EN);
1673         data    = btread(BT848_GPIO_DATA);
1674         printk(KERN_DEBUG "bttv%d: gpio: en=%08x, out=%08x in=%08x [%s]\n",
1675                btv->c.nr,outbits,data & outbits, data & ~outbits, comment);
1676 }
1677
1678 static void bttv_field_count(struct bttv *btv)
1679 {
1680         int need_count = 0;
1681
1682         if (btv->users)
1683                 need_count++;
1684
1685         if (need_count) {
1686                 /* start field counter */
1687                 btor(BT848_INT_VSYNC,BT848_INT_MASK);
1688         } else {
1689                 /* stop field counter */
1690                 btand(~BT848_INT_VSYNC,BT848_INT_MASK);
1691                 btv->field_count = 0;
1692         }
1693 }
1694
1695 static const struct bttv_format*
1696 format_by_palette(int palette)
1697 {
1698         unsigned int i;
1699
1700         for (i = 0; i < BTTV_FORMATS; i++) {
1701                 if (-1 == bttv_formats[i].palette)
1702                         continue;
1703                 if (bttv_formats[i].palette == palette)
1704                         return bttv_formats+i;
1705         }
1706         return NULL;
1707 }
1708
1709 static const struct bttv_format*
1710 format_by_fourcc(int fourcc)
1711 {
1712         unsigned int i;
1713
1714         for (i = 0; i < BTTV_FORMATS; i++) {
1715                 if (-1 == bttv_formats[i].fourcc)
1716                         continue;
1717                 if (bttv_formats[i].fourcc == fourcc)
1718                         return bttv_formats+i;
1719         }
1720         return NULL;
1721 }
1722
1723 /* ----------------------------------------------------------------------- */
1724 /* misc helpers                                                            */
1725
1726 static int
1727 bttv_switch_overlay(struct bttv *btv, struct bttv_fh *fh,
1728                     struct bttv_buffer *new)
1729 {
1730         struct bttv_buffer *old;
1731         unsigned long flags;
1732         int retval = 0;
1733
1734         dprintk("switch_overlay: enter [new=%p]\n",new);
1735         if (new)
1736                 new->vb.state = STATE_DONE;
1737         spin_lock_irqsave(&btv->s_lock,flags);
1738         old = btv->screen;
1739         btv->screen = new;
1740         btv->loop_irq |= 1;
1741         bttv_set_dma(btv, 0x03);
1742         spin_unlock_irqrestore(&btv->s_lock,flags);
1743         if (NULL != old) {
1744                 dprintk("switch_overlay: old=%p state is %d\n",old,old->vb.state);
1745                 bttv_dma_free(&fh->cap,btv, old);
1746                 kfree(old);
1747         }
1748         if (NULL == new)
1749                 free_btres(btv,fh,RESOURCE_OVERLAY);
1750         dprintk("switch_overlay: done\n");
1751         return retval;
1752 }
1753
1754 /* ----------------------------------------------------------------------- */
1755 /* video4linux (1) interface                                               */
1756
1757 static int bttv_prepare_buffer(struct videobuf_queue *q,struct bttv *btv,
1758                                struct bttv_buffer *buf,
1759                                const struct bttv_format *fmt,
1760                                unsigned int width, unsigned int height,
1761                                enum v4l2_field field)
1762 {
1763         struct bttv_fh *fh = q->priv_data;
1764         int redo_dma_risc = 0;
1765         struct bttv_crop c;
1766         int norm;
1767         int rc;
1768
1769         /* check settings */
1770         if (NULL == fmt)
1771                 return -EINVAL;
1772         if (fmt->btformat == BT848_COLOR_FMT_RAW) {
1773                 width  = RAW_BPL;
1774                 height = RAW_LINES*2;
1775                 if (width*height > buf->vb.bsize)
1776                         return -EINVAL;
1777                 buf->vb.size = buf->vb.bsize;
1778
1779                 /* Make sure tvnorm and vbi_end remain consistent
1780                    until we're done. */
1781                 mutex_lock(&btv->lock);
1782
1783                 norm = btv->tvnorm;
1784
1785                 /* In this mode capturing always starts at defrect.top
1786                    (default VDELAY), ignoring cropping parameters. */
1787                 if (btv->vbi_end > bttv_tvnorms[norm].cropcap.defrect.top) {
1788                         mutex_unlock(&btv->lock);
1789                         return -EINVAL;
1790                 }
1791
1792                 mutex_unlock(&btv->lock);
1793
1794                 c.rect = bttv_tvnorms[norm].cropcap.defrect;
1795         } else {
1796                 mutex_lock(&btv->lock);
1797
1798                 norm = btv->tvnorm;
1799                 c = btv->crop[!!fh->do_crop];
1800
1801                 mutex_unlock(&btv->lock);
1802
1803                 if (width < c.min_scaled_width ||
1804                     width > c.max_scaled_width ||
1805                     height < c.min_scaled_height)
1806                         return -EINVAL;
1807
1808                 switch (field) {
1809                 case V4L2_FIELD_TOP:
1810                 case V4L2_FIELD_BOTTOM:
1811                 case V4L2_FIELD_ALTERNATE:
1812                         /* btv->crop counts frame lines. Max. scale
1813                            factor is 16:1 for frames, 8:1 for fields. */
1814                         if (height * 2 > c.max_scaled_height)
1815                                 return -EINVAL;
1816                         break;
1817
1818                 default:
1819                         if (height > c.max_scaled_height)
1820                                 return -EINVAL;
1821                         break;
1822                 }
1823
1824                 buf->vb.size = (width * height * fmt->depth) >> 3;
1825                 if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
1826                         return -EINVAL;
1827         }
1828
1829         /* alloc + fill struct bttv_buffer (if changed) */
1830         if (buf->vb.width != width || buf->vb.height != height ||
1831             buf->vb.field != field ||
1832             buf->tvnorm != norm || buf->fmt != fmt ||
1833             buf->crop.top != c.rect.top ||
1834             buf->crop.left != c.rect.left ||
1835             buf->crop.width != c.rect.width ||
1836             buf->crop.height != c.rect.height) {
1837                 buf->vb.width  = width;
1838                 buf->vb.height = height;
1839                 buf->vb.field  = field;
1840                 buf->tvnorm    = norm;
1841                 buf->fmt       = fmt;
1842                 buf->crop      = c.rect;
1843                 redo_dma_risc = 1;
1844         }
1845
1846         /* alloc risc memory */
1847         if (STATE_NEEDS_INIT == buf->vb.state) {
1848                 redo_dma_risc = 1;
1849                 if (0 != (rc = videobuf_iolock(q,&buf->vb,&btv->fbuf)))
1850                         goto fail;
1851         }
1852
1853         if (redo_dma_risc)
1854                 if (0 != (rc = bttv_buffer_risc(btv,buf)))
1855                         goto fail;
1856
1857         buf->vb.state = STATE_PREPARED;
1858         return 0;
1859
1860  fail:
1861         bttv_dma_free(q,btv,buf);
1862         return rc;
1863 }
1864
1865 static int
1866 buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
1867 {
1868         struct bttv_fh *fh = q->priv_data;
1869
1870         *size = fh->fmt->depth*fh->width*fh->height >> 3;
1871         if (0 == *count)
1872                 *count = gbuffers;
1873         while (*size * *count > gbuffers * gbufsize)
1874                 (*count)--;
1875         return 0;
1876 }
1877
1878 static int
1879 buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
1880                enum v4l2_field field)
1881 {
1882         struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1883         struct bttv_fh *fh = q->priv_data;
1884
1885         return bttv_prepare_buffer(q,fh->btv, buf, fh->fmt,
1886                                    fh->width, fh->height, field);
1887 }
1888
1889 static void
1890 buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
1891 {
1892         struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1893         struct bttv_fh *fh = q->priv_data;
1894         struct bttv    *btv = fh->btv;
1895
1896         buf->vb.state = STATE_QUEUED;
1897         list_add_tail(&buf->vb.queue,&btv->capture);
1898         if (!btv->curr.frame_irq) {
1899                 btv->loop_irq |= 1;
1900                 bttv_set_dma(btv, 0x03);
1901         }
1902 }
1903
1904 static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
1905 {
1906         struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1907         struct bttv_fh *fh = q->priv_data;
1908
1909         bttv_dma_free(q,fh->btv,buf);
1910 }
1911
1912 static struct videobuf_queue_ops bttv_video_qops = {
1913         .buf_setup    = buffer_setup,
1914         .buf_prepare  = buffer_prepare,
1915         .buf_queue    = buffer_queue,
1916         .buf_release  = buffer_release,
1917 };
1918
1919 static int bttv_common_ioctls(struct bttv *btv, unsigned int cmd, void *arg)
1920 {
1921         switch (cmd) {
1922         case BTTV_VERSION:
1923                 return BTTV_VERSION_CODE;
1924
1925         /* ***  v4l1  *** ************************************************ */
1926         case VIDIOCGFREQ:
1927         {
1928                 unsigned long *freq = arg;
1929                 *freq = btv->freq;
1930                 return 0;
1931         }
1932         case VIDIOCSFREQ:
1933         {
1934                 struct v4l2_frequency freq;
1935
1936                 memset(&freq, 0, sizeof(freq));
1937                 freq.frequency = *(unsigned long *)arg;
1938                 mutex_lock(&btv->lock);
1939                 freq.type = btv->radio_user ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1940                 btv->freq = *(unsigned long *)arg;
1941                 bttv_call_i2c_clients(btv,VIDIOC_S_FREQUENCY,&freq);
1942                 if (btv->has_matchbox && btv->radio_user)
1943                         tea5757_set_freq(btv,*(unsigned long *)arg);
1944                 mutex_unlock(&btv->lock);
1945                 return 0;
1946         }
1947
1948         case VIDIOCGTUNER:
1949         {
1950                 struct video_tuner *v = arg;
1951
1952                 if (UNSET == bttv_tvcards[btv->c.type].tuner)
1953                         return -EINVAL;
1954                 if (v->tuner) /* Only tuner 0 */
1955                         return -EINVAL;
1956                 strcpy(v->name, "Television");
1957                 v->rangelow  = 0;
1958                 v->rangehigh = 0x7FFFFFFF;
1959                 v->flags     = VIDEO_TUNER_PAL|VIDEO_TUNER_NTSC|VIDEO_TUNER_SECAM;
1960                 v->mode      = btv->tvnorm;
1961                 v->signal    = (btread(BT848_DSTATUS)&BT848_DSTATUS_HLOC) ? 0xFFFF : 0;
1962                 bttv_call_i2c_clients(btv,cmd,v);
1963                 return 0;
1964         }
1965         case VIDIOCSTUNER:
1966         {
1967                 struct video_tuner *v = arg;
1968
1969                 if (v->tuner) /* Only tuner 0 */
1970                         return -EINVAL;
1971                 if (v->mode >= BTTV_TVNORMS)
1972                         return -EINVAL;
1973
1974                 mutex_lock(&btv->lock);
1975                 set_tvnorm(btv,v->mode);
1976                 bttv_call_i2c_clients(btv,cmd,v);
1977                 mutex_unlock(&btv->lock);
1978                 return 0;
1979         }
1980
1981         case VIDIOCGCHAN:
1982         {
1983                 struct video_channel *v = arg;
1984                 unsigned int channel = v->channel;
1985
1986                 if (channel >= bttv_tvcards[btv->c.type].video_inputs)
1987                         return -EINVAL;
1988                 v->tuners=0;
1989                 v->flags = VIDEO_VC_AUDIO;
1990                 v->type = VIDEO_TYPE_CAMERA;
1991                 v->norm = btv->tvnorm;
1992                 if (channel == bttv_tvcards[btv->c.type].tuner)  {
1993                         strcpy(v->name,"Television");
1994                         v->flags|=VIDEO_VC_TUNER;
1995                         v->type=VIDEO_TYPE_TV;
1996                         v->tuners=1;
1997                 } else if (channel == btv->svhs) {
1998                         strcpy(v->name,"S-Video");
1999                 } else {
2000                         sprintf(v->name,"Composite%d",channel);
2001                 }
2002                 return 0;
2003         }
2004         case VIDIOCSCHAN:
2005         {
2006                 struct video_channel *v = arg;
2007                 unsigned int channel = v->channel;
2008
2009                 if (channel >= bttv_tvcards[btv->c.type].video_inputs)
2010                         return -EINVAL;
2011                 if (v->norm >= BTTV_TVNORMS)
2012                         return -EINVAL;
2013
2014                 mutex_lock(&btv->lock);
2015                 if (channel == btv->input &&
2016                     v->norm == btv->tvnorm) {
2017                         /* nothing to do */
2018                         mutex_unlock(&btv->lock);
2019                         return 0;
2020                 }
2021
2022                 set_input(btv, v->channel, v->norm);
2023                 mutex_unlock(&btv->lock);
2024                 return 0;
2025         }
2026
2027         case VIDIOCGAUDIO:
2028         {
2029                 struct video_audio *v = arg;
2030
2031                 memset(v,0,sizeof(*v));
2032                 strcpy(v->name,"Television");
2033                 v->flags |= VIDEO_AUDIO_MUTABLE;
2034                 v->mode  = VIDEO_SOUND_MONO;
2035
2036                 mutex_lock(&btv->lock);
2037                 bttv_call_i2c_clients(btv,cmd,v);
2038
2039                 /* card specific hooks */
2040                 if (btv->audio_hook)
2041                         btv->audio_hook(btv,v,0);
2042
2043                 mutex_unlock(&btv->lock);
2044                 return 0;
2045         }
2046         case VIDIOCSAUDIO:
2047         {
2048                 struct video_audio *v = arg;
2049                 unsigned int audio = v->audio;
2050
2051                 if (audio >= bttv_tvcards[btv->c.type].audio_inputs)
2052                         return -EINVAL;
2053
2054                 mutex_lock(&btv->lock);
2055                 audio_mute(btv, (v->flags&VIDEO_AUDIO_MUTE) ? 1 : 0);
2056                 bttv_call_i2c_clients(btv,cmd,v);
2057
2058                 /* card specific hooks */
2059                 if (btv->audio_hook)
2060                         btv->audio_hook(btv,v,1);
2061
2062                 mutex_unlock(&btv->lock);
2063                 return 0;
2064         }
2065
2066         /* ***  v4l2  *** ************************************************ */
2067         case VIDIOC_ENUMSTD:
2068         {
2069                 struct v4l2_standard *e = arg;
2070                 unsigned int index = e->index;
2071
2072                 if (index >= BTTV_TVNORMS)
2073                         return -EINVAL;
2074                 v4l2_video_std_construct(e, bttv_tvnorms[e->index].v4l2_id,
2075                                          bttv_tvnorms[e->index].name);
2076                 e->index = index;
2077                 return 0;
2078         }
2079         case VIDIOC_G_STD:
2080         {
2081                 v4l2_std_id *id = arg;
2082                 *id = bttv_tvnorms[btv->tvnorm].v4l2_id;
2083                 return 0;
2084         }
2085         case VIDIOC_S_STD:
2086         {
2087                 v4l2_std_id *id = arg;
2088                 unsigned int i;
2089
2090                 for (i = 0; i < BTTV_TVNORMS; i++)
2091                         if (*id & bttv_tvnorms[i].v4l2_id)
2092                                 break;
2093                 if (i == BTTV_TVNORMS)
2094                         return -EINVAL;
2095
2096                 mutex_lock(&btv->lock);
2097                 set_tvnorm(btv,i);
2098                 i2c_vidiocschan(btv);
2099                 mutex_unlock(&btv->lock);
2100                 return 0;
2101         }
2102         case VIDIOC_QUERYSTD:
2103         {
2104                 v4l2_std_id *id = arg;
2105
2106                 if (btread(BT848_DSTATUS) & BT848_DSTATUS_NUML)
2107                         *id = V4L2_STD_625_50;
2108                 else
2109                         *id = V4L2_STD_525_60;
2110                 return 0;
2111         }
2112
2113         case VIDIOC_ENUMINPUT:
2114         {
2115                 struct v4l2_input *i = arg;
2116                 unsigned int n;
2117
2118                 n = i->index;
2119                 if (n >= bttv_tvcards[btv->c.type].video_inputs)
2120                         return -EINVAL;
2121                 memset(i,0,sizeof(*i));
2122                 i->index    = n;
2123                 i->type     = V4L2_INPUT_TYPE_CAMERA;
2124                 i->audioset = 1;
2125                 if (i->index == bttv_tvcards[btv->c.type].tuner) {
2126                         sprintf(i->name, "Television");
2127                         i->type  = V4L2_INPUT_TYPE_TUNER;
2128                         i->tuner = 0;
2129                 } else if (i->index == btv->svhs) {
2130                         sprintf(i->name, "S-Video");
2131                 } else {
2132                         sprintf(i->name,"Composite%d",i->index);
2133                 }
2134                 if (i->index == btv->input) {
2135                         __u32 dstatus = btread(BT848_DSTATUS);
2136                         if (0 == (dstatus & BT848_DSTATUS_PRES))
2137                                 i->status |= V4L2_IN_ST_NO_SIGNAL;
2138                         if (0 == (dstatus & BT848_DSTATUS_HLOC))
2139                                 i->status |= V4L2_IN_ST_NO_H_LOCK;
2140                 }
2141                 for (n = 0; n < BTTV_TVNORMS; n++)
2142                         i->std |= bttv_tvnorms[n].v4l2_id;
2143                 return 0;
2144         }
2145         case VIDIOC_G_INPUT:
2146         {
2147                 int *i = arg;
2148                 *i = btv->input;
2149                 return 0;
2150         }
2151         case VIDIOC_S_INPUT:
2152         {
2153                 unsigned int *i = arg;
2154
2155                 if (*i > bttv_tvcards[btv->c.type].video_inputs)
2156                         return -EINVAL;
2157                 mutex_lock(&btv->lock);
2158                 set_input(btv, *i, btv->tvnorm);
2159                 mutex_unlock(&btv->lock);
2160                 return 0;
2161         }
2162
2163         case VIDIOC_G_TUNER:
2164         {
2165                 struct v4l2_tuner *t = arg;
2166
2167                 if (UNSET == bttv_tvcards[btv->c.type].tuner)
2168                         return -EINVAL;
2169                 if (0 != t->index)
2170                         return -EINVAL;
2171                 mutex_lock(&btv->lock);
2172                 memset(t,0,sizeof(*t));
2173                 t->rxsubchans = V4L2_TUNER_SUB_MONO;
2174                 bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t);
2175                 strcpy(t->name, "Television");
2176                 t->capability = V4L2_TUNER_CAP_NORM;
2177                 t->type       = V4L2_TUNER_ANALOG_TV;
2178                 if (btread(BT848_DSTATUS)&BT848_DSTATUS_HLOC)
2179                         t->signal = 0xffff;
2180
2181                 if (btv->audio_hook) {
2182                         /* Hmmm ... */
2183                         struct video_audio va;
2184                         memset(&va, 0, sizeof(struct video_audio));
2185                         btv->audio_hook(btv,&va,0);
2186                         t->audmode    = V4L2_TUNER_MODE_MONO;
2187                         t->rxsubchans = V4L2_TUNER_SUB_MONO;
2188                         if(va.mode & VIDEO_SOUND_STEREO) {
2189                                 t->audmode    = V4L2_TUNER_MODE_STEREO;
2190                                 t->rxsubchans = V4L2_TUNER_SUB_STEREO;
2191                         }
2192                         if(va.mode & VIDEO_SOUND_LANG2) {
2193                                 t->audmode    = V4L2_TUNER_MODE_LANG1;
2194                                 t->rxsubchans = V4L2_TUNER_SUB_LANG1
2195                                         | V4L2_TUNER_SUB_LANG2;
2196                         }
2197                 }
2198                 /* FIXME: fill capability+audmode */
2199                 mutex_unlock(&btv->lock);
2200                 return 0;
2201         }
2202         case VIDIOC_S_TUNER:
2203         {
2204                 struct v4l2_tuner *t = arg;
2205
2206                 if (UNSET == bttv_tvcards[btv->c.type].tuner)
2207                         return -EINVAL;
2208                 if (0 != t->index)
2209                         return -EINVAL;
2210                 mutex_lock(&btv->lock);
2211                 bttv_call_i2c_clients(btv, VIDIOC_S_TUNER, t);
2212                 if (btv->audio_hook) {
2213                         struct video_audio va;
2214                         memset(&va, 0, sizeof(struct video_audio));
2215                         if (t->audmode == V4L2_TUNER_MODE_MONO)
2216                                 va.mode = VIDEO_SOUND_MONO;
2217                         else if (t->audmode == V4L2_TUNER_MODE_STEREO ||
2218                                  t->audmode == V4L2_TUNER_MODE_LANG1_LANG2)
2219                                 va.mode = VIDEO_SOUND_STEREO;
2220                         else if (t->audmode == V4L2_TUNER_MODE_LANG1)
2221                                 va.mode = VIDEO_SOUND_LANG1;
2222                         else if (t->audmode == V4L2_TUNER_MODE_LANG2)
2223                                 va.mode = VIDEO_SOUND_LANG2;
2224                         btv->audio_hook(btv,&va,1);
2225                 }
2226                 mutex_unlock(&btv->lock);
2227                 return 0;
2228         }
2229
2230         case VIDIOC_G_FREQUENCY:
2231         {
2232                 struct v4l2_frequency *f = arg;
2233
2234                 memset(f,0,sizeof(*f));
2235                 f->type = V4L2_TUNER_ANALOG_TV;
2236                 f->frequency = btv->freq;
2237                 return 0;
2238         }
2239         case VIDIOC_S_FREQUENCY:
2240         {
2241                 struct v4l2_frequency *f = arg;
2242
2243                 if (unlikely(f->tuner != 0))
2244                         return -EINVAL;
2245                 if (unlikely (f->type != V4L2_TUNER_ANALOG_TV))
2246                         return -EINVAL;
2247                 mutex_lock(&btv->lock);
2248                 btv->freq = f->frequency;
2249                 bttv_call_i2c_clients(btv,VIDIOC_S_FREQUENCY,f);
2250                 if (btv->has_matchbox && btv->radio_user)
2251                         tea5757_set_freq(btv,btv->freq);
2252                 mutex_unlock(&btv->lock);
2253                 return 0;
2254         }
2255         case VIDIOC_LOG_STATUS:
2256         {
2257                 printk(KERN_INFO "bttv%d: =================  START STATUS CARD #%d  =================\n", btv->c.nr, btv->c.nr);
2258                 bttv_call_i2c_clients(btv, VIDIOC_LOG_STATUS, NULL);
2259                 printk(KERN_INFO "bttv%d: ==================  END STATUS CARD #%d  ==================\n", btv->c.nr, btv->c.nr);
2260                 return 0;
2261         }
2262 #ifdef CONFIG_VIDEO_ADV_DEBUG
2263         case VIDIOC_DBG_G_REGISTER:
2264         case VIDIOC_DBG_S_REGISTER:
2265         {
2266                 struct v4l2_register *reg = arg;
2267                 if (!capable(CAP_SYS_ADMIN))
2268                         return -EPERM;
2269                 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
2270                         return -EINVAL;
2271                 /* bt848 has a 12-bit register space */
2272                 reg->reg &= 0xfff;
2273                 if (cmd == VIDIOC_DBG_G_REGISTER)
2274                         reg->val = btread(reg->reg);
2275                 else
2276                         btwrite(reg->val, reg->reg);
2277                 return 0;
2278         }
2279 #endif
2280
2281         default:
2282                 return -ENOIOCTLCMD;
2283
2284         }
2285         return 0;
2286 }
2287
2288 /* Given cropping boundaries b and the scaled width and height of a
2289    single field or frame, which must not exceed hardware limits, this
2290    function adjusts the cropping parameters c. */
2291 static void
2292 bttv_crop_adjust        (struct bttv_crop *             c,
2293                          const struct v4l2_rect *       b,
2294                          __s32                          width,
2295                          __s32                          height,
2296                          enum v4l2_field                field)
2297 {
2298         __s32 frame_height = height << !V4L2_FIELD_HAS_BOTH(field);
2299         __s32 max_left;
2300         __s32 max_top;
2301
2302         if (width < c->min_scaled_width) {
2303                 /* Max. hor. scale factor 16:1. */
2304                 c->rect.width = width * 16;
2305         } else if (width > c->max_scaled_width) {
2306                 /* Min. hor. scale factor 1:1. */
2307                 c->rect.width = width;
2308
2309                 max_left = b->left + b->width - width;
2310                 max_left = min(max_left, (__s32) MAX_HDELAY);
2311                 if (c->rect.left > max_left)
2312                         c->rect.left = max_left;
2313         }
2314
2315         if (height < c->min_scaled_height) {
2316                 /* Max. vert. scale factor 16:1, single fields 8:1. */
2317                 c->rect.height = height * 16;
2318         } else if (frame_height > c->max_scaled_height) {
2319                 /* Min. vert. scale factor 1:1.
2320                    Top and height count field lines times two. */
2321                 c->rect.height = (frame_height + 1) & ~1;
2322
2323                 max_top = b->top + b->height - c->rect.height;
2324                 if (c->rect.top > max_top)
2325                         c->rect.top = max_top;
2326         }
2327
2328         bttv_crop_calc_limits(c);
2329 }
2330
2331 /* Returns an error if scaling to a frame or single field with the given
2332    width and height is not possible with the current cropping parameters
2333    and width aligned according to width_mask. If adjust_size is TRUE the
2334    function may adjust the width and/or height instead, rounding width
2335    to (width + width_bias) & width_mask. If adjust_crop is TRUE it may
2336    also adjust the current cropping parameters to get closer to the
2337    desired image size. */
2338 static int
2339 limit_scaled_size       (struct bttv_fh *               fh,
2340                          __s32 *                        width,
2341                          __s32 *                        height,
2342                          enum v4l2_field                field,
2343                          unsigned int                   width_mask,
2344                          unsigned int                   width_bias,
2345                          int                            adjust_size,
2346                          int                            adjust_crop)
2347 {
2348         struct bttv *btv = fh->btv;
2349         const struct v4l2_rect *b;
2350         struct bttv_crop *c;
2351         __s32 min_width;
2352         __s32 min_height;
2353         __s32 max_width;
2354         __s32 max_height;
2355         int rc;
2356
2357         BUG_ON((int) width_mask >= 0 ||
2358                width_bias >= (unsigned int) -width_mask);
2359
2360         /* Make sure tvnorm, vbi_end and the current cropping parameters
2361            remain consistent until we're done. */
2362         mutex_lock(&btv->lock);
2363
2364         b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
2365
2366         /* Do crop - use current, don't - use default parameters. */
2367         c = &btv->crop[!!fh->do_crop];
2368
2369         if (fh->do_crop
2370             && adjust_size
2371             && adjust_crop
2372             && !locked_btres(btv, VIDEO_RESOURCES)) {
2373                 min_width = 48;
2374                 min_height = 32;
2375
2376                 /* We cannot scale up. When the scaled image is larger
2377                    than crop.rect we adjust the crop.rect as required
2378                    by the V4L2 spec, hence cropcap.bounds are our limit. */
2379                 max_width = min(b->width, (__s32) MAX_HACTIVE);
2380                 max_height = b->height;
2381
2382                 /* We cannot capture the same line as video and VBI data.
2383                    Note btv->vbi_end is really a minimum, see
2384                    bttv_vbi_try_fmt(). */
2385                 if (btv->vbi_end > b->top) {
2386                         max_height -= btv->vbi_end - b->top;
2387                         rc = -EBUSY;
2388                         if (min_height > max_height)
2389                                 goto fail;
2390                 }
2391         } else {
2392                 rc = -EBUSY;
2393                 if (btv->vbi_end > c->rect.top)
2394                         goto fail;
2395
2396                 min_width  = c->min_scaled_width;
2397                 min_height = c->min_scaled_height;
2398                 max_width  = c->max_scaled_width;
2399                 max_height = c->max_scaled_height;
2400
2401                 adjust_crop = 0;
2402         }
2403
2404         min_width = (min_width - width_mask - 1) & width_mask;
2405         max_width = max_width & width_mask;
2406
2407         /* Max. scale factor is 16:1 for frames, 8:1 for fields. */
2408         min_height = min_height;
2409         /* Min. scale factor is 1:1. */
2410         max_height >>= !V4L2_FIELD_HAS_BOTH(field);
2411
2412         if (adjust_size) {
2413                 *width = clamp(*width, min_width, max_width);
2414                 *height = clamp(*height, min_height, max_height);
2415
2416                 /* Round after clamping to avoid overflow. */
2417                 *width = (*width + width_bias) & width_mask;
2418
2419                 if (adjust_crop) {
2420                         bttv_crop_adjust(c, b, *width, *height, field);
2421
2422                         if (btv->vbi_end > c->rect.top) {
2423                                 /* Move the crop window out of the way. */
2424                                 c->rect.top = btv->vbi_end;
2425                         }
2426                 }
2427         } else {
2428                 rc = -EINVAL;
2429                 if (*width  < min_width ||
2430                     *height < min_height ||
2431                     *width  > max_width ||
2432                     *height > max_height ||
2433                     0 != (*width & ~width_mask))
2434                         goto fail;
2435         }
2436
2437         rc = 0; /* success */
2438
2439  fail:
2440         mutex_unlock(&btv->lock);
2441
2442         return rc;
2443 }
2444
2445 /* Returns an error if the given overlay window dimensions are not
2446    possible with the current cropping parameters. If adjust_size is
2447    TRUE the function may adjust the window width and/or height
2448    instead, however it always rounds the horizontal position and
2449    width as btcx_align() does. If adjust_crop is TRUE the function
2450    may also adjust the current cropping parameters to get closer
2451    to the desired window size. */
2452 static int
2453 verify_window           (struct bttv_fh *               fh,
2454                          struct v4l2_window *           win,
2455                          int                            adjust_size,
2456                          int                            adjust_crop)
2457 {
2458         enum v4l2_field field;
2459         unsigned int width_mask;
2460         int rc;
2461
2462         if (win->w.width  < 48 || win->w.height < 32)
2463                 return -EINVAL;
2464         if (win->clipcount > 2048)
2465                 return -EINVAL;
2466
2467         field = win->field;
2468
2469         if (V4L2_FIELD_ANY == field) {
2470                 __s32 height2;
2471
2472                 height2 = fh->btv->crop[!!fh->do_crop].rect.height >> 1;
2473                 field = (win->w.height > height2)
2474                         ? V4L2_FIELD_INTERLACED
2475                         : V4L2_FIELD_TOP;
2476         }
2477         switch (field) {
2478         case V4L2_FIELD_TOP:
2479         case V4L2_FIELD_BOTTOM:
2480         case V4L2_FIELD_INTERLACED:
2481                 break;
2482         default:
2483                 return -EINVAL;
2484         }
2485
2486         /* 4-byte alignment. */
2487         if (NULL == fh->ovfmt)
2488                 return -EINVAL;
2489         width_mask = ~0;
2490         switch (fh->ovfmt->depth) {
2491         case 8:
2492         case 24:
2493                 width_mask = ~3;
2494                 break;
2495         case 16:
2496                 width_mask = ~1;
2497                 break;
2498         case 32:
2499                 break;
2500         default:
2501                 BUG();
2502         }
2503
2504         win->w.width -= win->w.left & ~width_mask;
2505         win->w.left = (win->w.left - width_mask - 1) & width_mask;
2506
2507         rc = limit_scaled_size(fh, &win->w.width, &win->w.height,
2508                                field, width_mask,
2509                                /* width_bias: round down */ 0,
2510                                adjust_size, adjust_crop);
2511         if (0 != rc)
2512                 return rc;
2513
2514         win->field = field;
2515         return 0;
2516 }
2517
2518 static int setup_window(struct bttv_fh *fh, struct bttv *btv,
2519                         struct v4l2_window *win, int fixup)
2520 {
2521         struct v4l2_clip *clips = NULL;
2522         int n,size,retval = 0;
2523
2524         if (NULL == fh->ovfmt)
2525                 return -EINVAL;
2526         if (!(fh->ovfmt->flags & FORMAT_FLAGS_PACKED))
2527                 return -EINVAL;
2528         retval = verify_window(fh, win,
2529                                /* adjust_size */ fixup,
2530                                /* adjust_crop */ fixup);
2531         if (0 != retval)
2532                 return retval;
2533
2534         /* copy clips  --  luckily v4l1 + v4l2 are binary
2535            compatible here ...*/
2536         n = win->clipcount;
2537         size = sizeof(*clips)*(n+4);
2538         clips = kmalloc(size,GFP_KERNEL);
2539         if (NULL == clips)
2540                 return -ENOMEM;
2541         if (n > 0) {
2542                 if (copy_from_user(clips,win->clips,sizeof(struct v4l2_clip)*n)) {
2543                         kfree(clips);
2544                         return -EFAULT;
2545                 }
2546         }
2547         /* clip against screen */
2548         if (NULL != btv->fbuf.base)
2549                 n = btcx_screen_clips(btv->fbuf.fmt.width, btv->fbuf.fmt.height,
2550                                       &win->w, clips, n);
2551         btcx_sort_clips(clips,n);
2552
2553         /* 4-byte alignments */
2554         switch (fh->ovfmt->depth) {
2555         case 8:
2556         case 24:
2557                 btcx_align(&win->w, clips, n, 3);
2558                 break;
2559         case 16:
2560                 btcx_align(&win->w, clips, n, 1);
2561                 break;
2562         case 32:
2563                 /* no alignment fixups needed */
2564                 break;
2565         default:
2566                 BUG();
2567         }
2568
2569         mutex_lock(&fh->cap.lock);
2570                 kfree(fh->ov.clips);
2571         fh->ov.clips    = clips;
2572         fh->ov.nclips   = n;
2573
2574         fh->ov.w        = win->w;
2575         fh->ov.field    = win->field;
2576         fh->ov.setup_ok = 1;
2577         btv->init.ov.w.width   = win->w.width;
2578         btv->init.ov.w.height  = win->w.height;
2579         btv->init.ov.field     = win->field;
2580
2581         /* update overlay if needed */
2582         retval = 0;
2583         if (check_btres(fh, RESOURCE_OVERLAY)) {
2584                 struct bttv_buffer *new;
2585
2586                 new = videobuf_pci_alloc(sizeof(*new));
2587                 new->crop = btv->crop[!!fh->do_crop].rect;
2588                 bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
2589                 retval = bttv_switch_overlay(btv,fh,new);
2590         }
2591         mutex_unlock(&fh->cap.lock);
2592         return retval;
2593 }
2594
2595 /* ----------------------------------------------------------------------- */
2596
2597 static struct videobuf_queue* bttv_queue(struct bttv_fh *fh)
2598 {
2599         struct videobuf_queue* q = NULL;
2600
2601         switch (fh->type) {
2602         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2603                 q = &fh->cap;
2604                 break;
2605         case V4L2_BUF_TYPE_VBI_CAPTURE:
2606                 q = &fh->vbi;
2607                 break;
2608         default:
2609                 BUG();
2610         }
2611         return q;
2612 }
2613
2614 static int bttv_resource(struct bttv_fh *fh)
2615 {
2616         int res = 0;
2617
2618         switch (fh->type) {
2619         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2620                 res = RESOURCE_VIDEO_STREAM;
2621                 break;
2622         case V4L2_BUF_TYPE_VBI_CAPTURE:
2623                 res = RESOURCE_VBI;
2624                 break;
2625         default:
2626                 BUG();
2627         }
2628         return res;
2629 }
2630
2631 static int bttv_switch_type(struct bttv_fh *fh, enum v4l2_buf_type type)
2632 {
2633         struct videobuf_queue *q = bttv_queue(fh);
2634         int res = bttv_resource(fh);
2635
2636         if (check_btres(fh,res))
2637                 return -EBUSY;
2638         if (videobuf_queue_is_busy(q))
2639                 return -EBUSY;
2640         fh->type = type;
2641         return 0;
2642 }
2643
2644 static void
2645 pix_format_set_size     (struct v4l2_pix_format *       f,
2646                          const struct bttv_format *     fmt,
2647                          unsigned int                   width,
2648                          unsigned int                   height)
2649 {
2650         f->width = width;
2651         f->height = height;
2652
2653         if (fmt->flags & FORMAT_FLAGS_PLANAR) {
2654                 f->bytesperline = width; /* Y plane */
2655                 f->sizeimage = (width * height * fmt->depth) >> 3;
2656         } else {
2657                 f->bytesperline = (width * fmt->depth) >> 3;
2658                 f->sizeimage = height * f->bytesperline;
2659         }
2660 }
2661
2662 static int bttv_g_fmt(struct bttv_fh *fh, struct v4l2_format *f)
2663 {
2664         switch (f->type) {
2665         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2666                 memset(&f->fmt.pix,0,sizeof(struct v4l2_pix_format));
2667                 pix_format_set_size (&f->fmt.pix, fh->fmt,
2668                                      fh->width, fh->height);
2669                 f->fmt.pix.field        = fh->cap.field;
2670                 f->fmt.pix.pixelformat  = fh->fmt->fourcc;
2671                 return 0;
2672         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2673                 memset(&f->fmt.win,0,sizeof(struct v4l2_window));
2674                 f->fmt.win.w     = fh->ov.w;
2675                 f->fmt.win.field = fh->ov.field;
2676                 return 0;
2677         case V4L2_BUF_TYPE_VBI_CAPTURE:
2678                 bttv_vbi_get_fmt(fh, &f->fmt.vbi);
2679                 return 0;
2680         default:
2681                 return -EINVAL;
2682         }
2683 }
2684
2685 static int bttv_try_fmt(struct bttv_fh *fh, struct bttv *btv,
2686                         struct v4l2_format *f, int adjust_crop)
2687 {
2688         switch (f->type) {
2689         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2690         {
2691                 const struct bttv_format *fmt;
2692                 enum v4l2_field field;
2693                 __s32 width, height;
2694                 int rc;
2695
2696                 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2697                 if (NULL == fmt)
2698                         return -EINVAL;
2699
2700                 field = f->fmt.pix.field;
2701                 if (V4L2_FIELD_ANY == field) {
2702                         __s32 height2;
2703
2704                         height2 = btv->crop[!!fh->do_crop].rect.height >> 1;
2705                         field = (f->fmt.pix.height > height2)
2706                                 ? V4L2_FIELD_INTERLACED
2707                                 : V4L2_FIELD_BOTTOM;
2708                 }
2709                 if (V4L2_FIELD_SEQ_BT == field)
2710                         field = V4L2_FIELD_SEQ_TB;
2711                 switch (field) {
2712                 case V4L2_FIELD_TOP:
2713                 case V4L2_FIELD_BOTTOM:
2714                 case V4L2_FIELD_ALTERNATE:
2715                 case V4L2_FIELD_INTERLACED:
2716                         break;
2717                 case V4L2_FIELD_SEQ_TB:
2718                         if (fmt->flags & FORMAT_FLAGS_PLANAR)
2719                                 return -EINVAL;
2720                         break;
2721                 default:
2722                         return -EINVAL;
2723                 }
2724
2725                 width = f->fmt.pix.width;
2726                 height = f->fmt.pix.height;
2727
2728                 rc = limit_scaled_size(fh, &width, &height, field,
2729                                        /* width_mask: 4 pixels */ ~3,
2730                                        /* width_bias: nearest */ 2,
2731                                        /* adjust_size */ 1,
2732                                        adjust_crop);
2733                 if (0 != rc)
2734                         return rc;
2735
2736                 /* update data for the application */
2737                 f->fmt.pix.field = field;
2738                 pix_format_set_size(&f->fmt.pix, fmt, width, height);
2739
2740                 return 0;
2741         }
2742         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2743                 return verify_window(fh, &f->fmt.win,
2744                                      /* adjust_size */ 1,
2745                                      /* adjust_crop */ 0);
2746         case V4L2_BUF_TYPE_VBI_CAPTURE:
2747                 return bttv_vbi_try_fmt(fh, &f->fmt.vbi);
2748         default:
2749                 return -EINVAL;
2750         }
2751 }
2752
2753 static int bttv_s_fmt(struct bttv_fh *fh, struct bttv *btv,
2754                       struct v4l2_format *f)
2755 {
2756         int retval;
2757
2758         switch (f->type) {
2759         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2760         {
2761                 const struct bttv_format *fmt;
2762
2763                 retval = bttv_switch_type(fh,f->type);
2764                 if (0 != retval)
2765                         return retval;
2766                 retval = bttv_try_fmt(fh,btv,f, /* adjust_crop */ 1);
2767                 if (0 != retval)
2768                         return retval;
2769                 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2770
2771                 /* update our state informations */
2772                 mutex_lock(&fh->cap.lock);
2773                 fh->fmt              = fmt;
2774                 fh->cap.field        = f->fmt.pix.field;
2775                 fh->cap.last         = V4L2_FIELD_NONE;
2776                 fh->width            = f->fmt.pix.width;
2777                 fh->height           = f->fmt.pix.height;
2778                 btv->init.fmt        = fmt;
2779                 btv->init.width      = f->fmt.pix.width;
2780                 btv->init.height     = f->fmt.pix.height;
2781                 mutex_unlock(&fh->cap.lock);
2782
2783                 return 0;
2784         }
2785         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2786                 if (no_overlay > 0) {
2787                         printk ("V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
2788                         return -EINVAL;
2789                 }
2790                 return setup_window(fh, btv, &f->fmt.win, 1);
2791         case V4L2_BUF_TYPE_VBI_CAPTURE:
2792                 retval = bttv_switch_type(fh,f->type);
2793                 if (0 != retval)
2794                         return retval;
2795                 return bttv_vbi_set_fmt(fh, &f->fmt.vbi);
2796         default:
2797                 return -EINVAL;
2798         }
2799 }
2800
2801 static int bttv_do_ioctl(struct inode *inode, struct file *file,
2802                          unsigned int cmd, void *arg)
2803 {
2804         struct bttv_fh *fh  = file->private_data;
2805         struct bttv    *btv = fh->btv;
2806         unsigned long flags;
2807         int retval = 0;
2808
2809         if (bttv_debug > 1)
2810                 v4l_print_ioctl(btv->c.name, cmd);
2811
2812         if (btv->errors)
2813                 bttv_reinit_bt848(btv);
2814
2815         switch (cmd) {
2816         case VIDIOCSFREQ:
2817         case VIDIOCSTUNER:
2818         case VIDIOCSCHAN:
2819         case VIDIOC_S_CTRL:
2820         case VIDIOC_S_STD:
2821         case VIDIOC_S_INPUT:
2822         case VIDIOC_S_TUNER:
2823         case VIDIOC_S_FREQUENCY:
2824                 retval = v4l2_prio_check(&btv->prio,&fh->prio);
2825                 if (0 != retval)
2826                         return retval;
2827         };
2828
2829         switch (cmd) {
2830
2831         /* ***  v4l1  *** ************************************************ */
2832         case VIDIOCGCAP:
2833         {
2834                 struct video_capability *cap = arg;
2835
2836                 memset(cap,0,sizeof(*cap));
2837                 strcpy(cap->name,btv->video_dev->name);
2838                 if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
2839                         /* vbi */
2840                         cap->type = VID_TYPE_TUNER|VID_TYPE_TELETEXT;
2841                 } else {
2842                         /* others */
2843                         cap->type = VID_TYPE_CAPTURE|
2844                                 VID_TYPE_TUNER|
2845                                 VID_TYPE_CLIPPING|
2846                                 VID_TYPE_SCALES;
2847                         if (no_overlay <= 0)
2848                                 cap->type |= VID_TYPE_OVERLAY;
2849
2850                         cap->maxwidth  = bttv_tvnorms[btv->tvnorm].swidth;
2851                         cap->maxheight = bttv_tvnorms[btv->tvnorm].sheight;
2852                         cap->minwidth  = 48;
2853                         cap->minheight = 32;
2854                 }
2855                 cap->channels  = bttv_tvcards[btv->c.type].video_inputs;
2856                 cap->audios    = bttv_tvcards[btv->c.type].audio_inputs;
2857                 return 0;
2858         }
2859
2860         case VIDIOCGPICT:
2861         {
2862                 struct video_picture *pic = arg;
2863
2864                 memset(pic,0,sizeof(*pic));
2865                 pic->brightness = btv->bright;
2866                 pic->contrast   = btv->contrast;
2867                 pic->hue        = btv->hue;
2868                 pic->colour     = btv->saturation;
2869                 if (fh->fmt) {
2870                         pic->depth   = fh->fmt->depth;
2871                         pic->palette = fh->fmt->palette;
2872                 }
2873                 return 0;
2874         }
2875         case VIDIOCSPICT:
2876         {
2877                 struct video_picture *pic = arg;
2878                 const struct bttv_format *fmt;
2879
2880                 fmt = format_by_palette(pic->palette);
2881                 if (NULL == fmt)
2882                         return -EINVAL;
2883                 mutex_lock(&fh->cap.lock);
2884                 if (fmt->depth != pic->depth) {
2885                         retval = -EINVAL;
2886                         goto fh_unlock_and_return;
2887                 }
2888                 if (fmt->flags & FORMAT_FLAGS_RAW) {
2889                         /* VIDIOCMCAPTURE uses gbufsize, not RAW_BPL *
2890                            RAW_LINES * 2. F1 is stored at offset 0, F2
2891                            at buffer size / 2. */
2892                         fh->width = RAW_BPL;
2893                         fh->height = gbufsize / RAW_BPL;
2894                         btv->init.width  = RAW_BPL;
2895                         btv->init.height = gbufsize / RAW_BPL;
2896                 }
2897                 fh->ovfmt   = fmt;
2898                 fh->fmt     = fmt;
2899                 btv->init.ovfmt   = fmt;
2900                 btv->init.fmt     = fmt;
2901                 if (bigendian) {
2902                         /* dirty hack time:  swap bytes for overlay if the
2903                            display adaptor is big endian (insmod option) */
2904                         if (fmt->palette == VIDEO_PALETTE_RGB555 ||
2905                             fmt->palette == VIDEO_PALETTE_RGB565 ||
2906                             fmt->palette == VIDEO_PALETTE_RGB32) {
2907                                 fh->ovfmt = fmt+1;
2908                         }
2909                 }
2910                 bt848_bright(btv,pic->brightness);
2911                 bt848_contrast(btv,pic->contrast);
2912                 bt848_hue(btv,pic->hue);
2913                 bt848_sat(btv,pic->colour);
2914                 mutex_unlock(&fh->cap.lock);
2915                 return 0;
2916         }
2917
2918         case VIDIOCGWIN:
2919         {
2920                 struct video_window *win = arg;
2921
2922                 memset(win,0,sizeof(*win));
2923                 win->x      = fh->ov.w.left;
2924                 win->y      = fh->ov.w.top;
2925                 win->width  = fh->ov.w.width;
2926                 win->height = fh->ov.w.height;
2927                 return 0;
2928         }
2929         case VIDIOCSWIN:
2930         {
2931                 struct video_window *win = arg;
2932                 struct v4l2_window w2;
2933
2934                 if (no_overlay > 0) {
2935                         printk ("VIDIOCSWIN: no_overlay\n");
2936                         return -EINVAL;
2937                 }
2938
2939                 w2.field = V4L2_FIELD_ANY;
2940                 w2.w.left    = win->x;
2941                 w2.w.top     = win->y;
2942                 w2.w.width   = win->width;
2943                 w2.w.height  = win->height;
2944                 w2.clipcount = win->clipcount;
2945                 w2.clips     = (struct v4l2_clip __user *)win->clips;
2946                 retval = setup_window(fh, btv, &w2, 0);
2947                 if (0 == retval) {
2948                         /* on v4l1 this ioctl affects the read() size too */
2949                         fh->width  = fh->ov.w.width;
2950                         fh->height = fh->ov.w.height;
2951                         btv->init.width  = fh->ov.w.width;
2952                         btv->init.height = fh->ov.w.height;
2953                 }
2954                 return retval;
2955         }
2956
2957         case VIDIOCGFBUF:
2958         {
2959                 struct video_buffer *fbuf = arg;
2960
2961                 fbuf->base          = btv->fbuf.base;
2962                 fbuf->width         = btv->fbuf.fmt.width;
2963                 fbuf->height        = btv->fbuf.fmt.height;
2964                 fbuf->bytesperline  = btv->fbuf.fmt.bytesperline;
2965                 if (fh->ovfmt)
2966                         fbuf->depth = fh->ovfmt->depth;
2967                 else {
2968                         if (fbuf->width)
2969                                 fbuf->depth   = ((fbuf->bytesperline<<3)
2970                                                   + (fbuf->width-1) )
2971                                                   /fbuf->width;
2972                         else
2973                                 fbuf->depth = 0;
2974                 }
2975                 return 0;
2976         }
2977         case VIDIOCSFBUF:
2978         {
2979                 struct video_buffer *fbuf = arg;
2980                 const struct bttv_format *fmt;
2981                 unsigned long end;
2982
2983                 if(!capable(CAP_SYS_ADMIN) &&
2984                    !capable(CAP_SYS_RAWIO))
2985                         return -EPERM;
2986                 end = (unsigned long)fbuf->base +
2987                         fbuf->height * fbuf->bytesperline;
2988                 mutex_lock(&fh->cap.lock);
2989                 retval = -EINVAL;
2990
2991                 switch (fbuf->depth) {
2992                 case 8:
2993                         fmt = format_by_palette(VIDEO_PALETTE_HI240);
2994                         break;
2995                 case 16:
2996                         fmt = format_by_palette(VIDEO_PALETTE_RGB565);
2997                         break;
2998                 case 24:
2999                         fmt = format_by_palette(VIDEO_PALETTE_RGB24);
3000                         break;
3001                 case 32:
3002                         fmt = format_by_palette(VIDEO_PALETTE_RGB32);
3003                         break;
3004                 case 15:
3005                         fbuf->depth = 16;
3006                         fmt = format_by_palette(VIDEO_PALETTE_RGB555);
3007                         break;
3008                 default:
3009                         fmt = NULL;
3010                         break;
3011                 }
3012                 if (NULL == fmt)
3013                         goto fh_unlock_and_return;
3014
3015                 fh->ovfmt = fmt;
3016                 fh->fmt   = fmt;
3017                 btv->init.ovfmt = fmt;
3018                 btv->init.fmt   = fmt;
3019                 btv->fbuf.base             = fbuf->base;
3020                 btv->fbuf.fmt.width        = fbuf->width;
3021                 btv->fbuf.fmt.height       = fbuf->height;
3022                 if (fbuf->bytesperline)
3023                         btv->fbuf.fmt.bytesperline = fbuf->bytesperline;
3024                 else
3025                         btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fbuf->depth/8;
3026                 mutex_unlock(&fh->cap.lock);
3027                 return 0;
3028         }
3029
3030         case VIDIOCCAPTURE:
3031         case VIDIOC_OVERLAY:
3032         {
3033                 struct bttv_buffer *new;
3034                 int *on = arg;
3035
3036                 if (*on) {
3037                         /* verify args */
3038                         if (NULL == btv->fbuf.base)
3039                                 return -EINVAL;
3040                         if (!fh->ov.setup_ok) {
3041                                 dprintk("bttv%d: overlay: !setup_ok\n",btv->c.nr);
3042                                 return -EINVAL;
3043                         }
3044                 }
3045
3046                 if (!check_alloc_btres(btv,fh,RESOURCE_OVERLAY))
3047                         return -EBUSY;
3048
3049                 mutex_lock(&fh->cap.lock);
3050                 if (*on) {
3051                         fh->ov.tvnorm = btv->tvnorm;
3052                         new = videobuf_pci_alloc(sizeof(*new));
3053                         new->crop = btv->crop[!!fh->do_crop].rect;
3054                         bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
3055                 } else {
3056                         new = NULL;
3057                 }
3058
3059                 /* switch over */
3060                 retval = bttv_switch_overlay(btv,fh,new);
3061                 mutex_unlock(&fh->cap.lock);
3062                 return retval;
3063         }
3064
3065         case VIDIOCGMBUF:
3066         {
3067                 struct video_mbuf *mbuf = arg;
3068                 unsigned int i;
3069
3070                 mutex_lock(&fh->cap.lock);
3071                 retval = videobuf_mmap_setup(&fh->cap,gbuffers,gbufsize,
3072                                              V4L2_MEMORY_MMAP);
3073                 if (retval < 0)
3074                         goto fh_unlock_and_return;
3075                 memset(mbuf,0,sizeof(*mbuf));
3076                 mbuf->frames = gbuffers;
3077                 mbuf->size   = gbuffers * gbufsize;
3078                 for (i = 0; i < gbuffers; i++)
3079                         mbuf->offsets[i] = i * gbufsize;
3080                 mutex_unlock(&fh->cap.lock);
3081                 return 0;
3082         }
3083         case VIDIOCMCAPTURE:
3084         {
3085                 struct video_mmap *vm = arg;
3086                 struct bttv_buffer *buf;
3087                 enum v4l2_field field;
3088                 __s32 height2;
3089                 int res;
3090
3091                 if (vm->frame >= VIDEO_MAX_FRAME)
3092                         return -EINVAL;
3093
3094                 res = bttv_resource(fh);
3095                 if (!check_alloc_btres(btv, fh, res))
3096                         return -EBUSY;
3097
3098                 mutex_lock(&fh->cap.lock);
3099                 retval = -EINVAL;
3100                 buf = (struct bttv_buffer *)fh->cap.bufs[vm->frame];
3101                 if (NULL == buf)
3102                         goto fh_unlock_and_return;
3103                 if (0 == buf->vb.baddr)
3104                         goto fh_unlock_and_return;
3105                 if (buf->vb.state == STATE_QUEUED ||
3106                     buf->vb.state == STATE_ACTIVE)
3107                         goto fh_unlock_and_return;
3108
3109                 height2 = btv->crop[!!fh->do_crop].rect.height >> 1;
3110                 field = (vm->height > height2)
3111                         ? V4L2_FIELD_INTERLACED
3112                         : V4L2_FIELD_BOTTOM;
3113                 retval = bttv_prepare_buffer(&fh->cap,btv,buf,
3114                                              format_by_palette(vm->format),
3115                                              vm->width,vm->height,field);
3116                 if (0 != retval)
3117                         goto fh_unlock_and_return;
3118                 spin_lock_irqsave(&btv->s_lock,flags);
3119                 buffer_queue(&fh->cap,&buf->vb);
3120                 spin_unlock_irqrestore(&btv->s_lock,flags);
3121                 mutex_unlock(&fh->cap.lock);
3122                 return 0;
3123         }
3124         case VIDIOCSYNC:
3125         {
3126                 int *frame = arg;
3127                 struct bttv_buffer *buf;
3128
3129                 if (*frame >= VIDEO_MAX_FRAME)
3130                         return -EINVAL;
3131
3132                 mutex_lock(&fh->cap.lock);
3133                 retval = -EINVAL;
3134                 buf = (struct bttv_buffer *)fh->cap.bufs[*frame];
3135                 if (NULL == buf)
3136                         goto fh_unlock_and_return;
3137                 retval = videobuf_waiton(&buf->vb,0,1);
3138                 if (0 != retval)
3139                         goto fh_unlock_and_return;
3140                 switch (buf->vb.state) {
3141                 case STATE_ERROR:
3142                         retval = -EIO;
3143                         /* fall through */
3144                 case STATE_DONE:
3145                 {
3146                         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
3147                         videobuf_dma_sync(&fh->cap,dma);
3148                         bttv_dma_free(&fh->cap,btv,buf);
3149                         break;
3150                 }
3151                 default:
3152                         retval = -EINVAL;
3153                         break;
3154                 }
3155                 mutex_unlock(&fh->cap.lock);
3156                 return retval;
3157         }
3158
3159         case VIDIOCGVBIFMT:
3160                 if (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE) {
3161                         retval = bttv_switch_type(fh,V4L2_BUF_TYPE_VBI_CAPTURE);
3162                         if (0 != retval)
3163                                 return retval;
3164                 }
3165
3166                 /* fall through */
3167
3168         case VIDIOCSVBIFMT:
3169                 return v4l_compat_translate_ioctl(inode, file, cmd,
3170                                                   arg, bttv_do_ioctl);
3171
3172         case BTTV_VERSION:
3173         case VIDIOCGFREQ:
3174         case VIDIOCSFREQ:
3175         case VIDIOCGTUNER:
3176         case VIDIOCSTUNER:
3177         case VIDIOCGCHAN:
3178         case VIDIOCSCHAN:
3179         case VIDIOCGAUDIO:
3180         case VIDIOCSAUDIO:
3181                 return bttv_common_ioctls(btv,cmd,arg);
3182
3183         /* ***  v4l2  *** ************************************************ */
3184         case VIDIOC_QUERYCAP:
3185         {
3186                 struct v4l2_capability *cap = arg;
3187
3188                 if (0 == v4l2)
3189                         return -EINVAL;
3190                 memset(cap, 0, sizeof (*cap));
3191                 strlcpy(cap->driver, "bttv", sizeof (cap->driver));
3192                 strlcpy(cap->card, btv->video_dev->name, sizeof (cap->card));
3193                 snprintf(cap->bus_info, sizeof (cap->bus_info),
3194                          "PCI:%s", pci_name(btv->c.pci));
3195                 cap->version = BTTV_VERSION_CODE;
3196                 cap->capabilities =
3197                         V4L2_CAP_VIDEO_CAPTURE |
3198                         V4L2_CAP_VBI_CAPTURE |
3199                         V4L2_CAP_READWRITE |
3200                         V4L2_CAP_STREAMING;
3201                 if (no_overlay <= 0)
3202                         cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY;
3203
3204                 if (bttv_tvcards[btv->c.type].tuner != UNSET &&
3205                     bttv_tvcards[btv->c.type].tuner != TUNER_ABSENT)
3206                         cap->capabilities |= V4L2_CAP_TUNER;
3207                 return 0;
3208         }
3209
3210         case VIDIOC_ENUM_FMT:
3211         {
3212                 struct v4l2_fmtdesc *f = arg;
3213                 enum v4l2_buf_type type;
3214                 unsigned int i;
3215                 int index;
3216
3217                 type  = f->type;
3218                 if (V4L2_BUF_TYPE_VBI_CAPTURE == type) {
3219                         /* vbi */
3220                         index = f->index;
3221                         if (0 != index)
3222                                 return -EINVAL;
3223                         memset(f,0,sizeof(*f));
3224                         f->index       = index;
3225                         f->type        = type;
3226                         f->pixelformat = V4L2_PIX_FMT_GREY;
3227                         strcpy(f->description,"vbi data");
3228                         return 0;
3229                 }
3230
3231                 /* video capture + overlay */
3232                 index = -1;
3233                 for (i = 0; i < BTTV_FORMATS; i++) {
3234                         if (bttv_formats[i].fourcc != -1)
3235                                 index++;
3236                         if ((unsigned int)index == f->index)
3237                                 break;
3238                 }
3239                 if (BTTV_FORMATS == i)
3240                         return -EINVAL;
3241
3242                 switch (f->type) {
3243                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3244                         break;
3245                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3246                         if (!(bttv_formats[i].flags & FORMAT_FLAGS_PACKED))
3247                                 return -EINVAL;
3248                         break;
3249                 default:
3250                         return -EINVAL;
3251                 }
3252                 memset(f,0,sizeof(*f));
3253                 f->index       = index;
3254                 f->type        = type;
3255                 f->pixelformat = bttv_formats[i].fourcc;
3256                 strlcpy(f->description,bttv_formats[i].name,sizeof(f->description));
3257                 return 0;
3258         }
3259
3260         case VIDIOC_TRY_FMT:
3261         {
3262                 struct v4l2_format *f = arg;
3263                 return bttv_try_fmt(fh,btv,f, /* adjust_crop */ 0);
3264         }
3265         case VIDIOC_G_FMT:
3266         {
3267                 struct v4l2_format *f = arg;
3268                 return bttv_g_fmt(fh,f);
3269         }
3270         case VIDIOC_S_FMT:
3271         {
3272                 struct v4l2_format *f = arg;
3273                 return bttv_s_fmt(fh,btv,f);
3274         }
3275
3276         case VIDIOC_G_FBUF:
3277         {
3278                 struct v4l2_framebuffer *fb = arg;
3279
3280                 *fb = btv->fbuf;
3281                 fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
3282                 if (fh->ovfmt)
3283                         fb->fmt.pixelformat  = fh->ovfmt->fourcc;
3284                 return 0;
3285         }
3286         case VIDIOC_S_FBUF:
3287         {
3288                 struct v4l2_framebuffer *fb = arg;
3289                 const struct bttv_format *fmt;
3290
3291                 if(!capable(CAP_SYS_ADMIN) &&
3292                    !capable(CAP_SYS_RAWIO))
3293                         return -EPERM;
3294
3295                 /* check args */
3296                 fmt = format_by_fourcc(fb->fmt.pixelformat);
3297                 if (NULL == fmt)
3298                         return -EINVAL;
3299                 if (0 == (fmt->flags & FORMAT_FLAGS_PACKED))
3300                         return -EINVAL;
3301
3302                 retval = -EINVAL;
3303                 if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
3304                         __s32 width = fb->fmt.width;
3305                         __s32 height = fb->fmt.height;
3306
3307                         retval = limit_scaled_size(fh, &width, &height,
3308                                                    V4L2_FIELD_INTERLACED,
3309                                                    /* width_mask */ ~3,
3310                                                    /* width_bias */ 2,
3311                                                    /* adjust_size */ 0,
3312                                                    /* adjust_crop */ 0);
3313                         if (0 != retval)
3314                                 return retval;
3315                 }
3316
3317                 /* ok, accept it */
3318                 mutex_lock(&fh->cap.lock);
3319                 btv->fbuf.base       = fb->base;
3320                 btv->fbuf.fmt.width  = fb->fmt.width;
3321                 btv->fbuf.fmt.height = fb->fmt.height;
3322                 if (0 != fb->fmt.bytesperline)
3323                         btv->fbuf.fmt.bytesperline = fb->fmt.bytesperline;
3324                 else
3325                         btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fmt->depth/8;
3326
3327                 retval = 0;
3328                 fh->ovfmt = fmt;
3329                 btv->init.ovfmt = fmt;
3330                 if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
3331                         fh->ov.w.left   = 0;
3332                         fh->ov.w.top    = 0;
3333                         fh->ov.w.width  = fb->fmt.width;
3334                         fh->ov.w.height = fb->fmt.height;
3335                         btv->init.ov.w.width  = fb->fmt.width;
3336                         btv->init.ov.w.height = fb->fmt.height;
3337                                 kfree(fh->ov.clips);
3338                         fh->ov.clips = NULL;
3339                         fh->ov.nclips = 0;
3340
3341                         if (check_btres(fh, RESOURCE_OVERLAY)) {
3342                                 struct bttv_buffer *new;
3343
3344                                 new = videobuf_pci_alloc(sizeof(*new));
3345                                 new->crop = btv->crop[!!fh->do_crop].rect;
3346                                 bttv_overlay_risc(btv,&fh->ov,fh->ovfmt,new);
3347                                 retval = bttv_switch_overlay(btv,fh,new);
3348                         }
3349                 }
3350                 mutex_unlock(&fh->cap.lock);
3351                 return retval;
3352         }
3353
3354         case VIDIOC_REQBUFS:
3355                 return videobuf_reqbufs(bttv_queue(fh),arg);
3356
3357         case VIDIOC_QUERYBUF:
3358                 return videobuf_querybuf(bttv_queue(fh),arg);
3359
3360         case VIDIOC_QBUF:
3361         {
3362                 int res = bttv_resource(fh);
3363
3364                 if (!check_alloc_btres(btv, fh, res))
3365                         return -EBUSY;
3366                 return videobuf_qbuf(bttv_queue(fh),arg);
3367         }
3368
3369         case VIDIOC_DQBUF:
3370                 return videobuf_dqbuf(bttv_queue(fh),arg,
3371                                       file->f_flags & O_NONBLOCK);
3372
3373         case VIDIOC_STREAMON:
3374         {
3375                 int res = bttv_resource(fh);
3376
3377                 if (!check_alloc_btres(btv,fh,res))
3378                         return -EBUSY;
3379                 return videobuf_streamon(bttv_queue(fh));
3380         }
3381         case VIDIOC_STREAMOFF:
3382         {
3383                 int res = bttv_resource(fh);
3384
3385                 retval = videobuf_streamoff(bttv_queue(fh));
3386                 if (retval < 0)
3387                         return retval;
3388                 free_btres(btv,fh,res);
3389                 return 0;
3390         }
3391
3392         case VIDIOC_QUERYCTRL:
3393         {
3394                 struct v4l2_queryctrl *c = arg;
3395                 int i;
3396
3397                 if ((c->id <  V4L2_CID_BASE ||
3398                      c->id >= V4L2_CID_LASTP1) &&
3399                     (c->id <  V4L2_CID_PRIVATE_BASE ||
3400                      c->id >= V4L2_CID_PRIVATE_LASTP1))
3401                         return -EINVAL;
3402                 for (i = 0; i < BTTV_CTLS; i++)
3403                         if (bttv_ctls[i].id == c->id)
3404                                 break;
3405                 if (i == BTTV_CTLS) {
3406                         *c = no_ctl;
3407                         return 0;
3408                 }
3409                 *c = bttv_ctls[i];
3410                 if (btv->audio_hook && i >= 4 && i <= 8) {
3411                         struct video_audio va;
3412                         memset(&va,0,sizeof(va));
3413                         btv->audio_hook(btv,&va,0);
3414                         switch (bttv_ctls[i].id) {
3415                         case V4L2_CID_AUDIO_VOLUME:
3416                                 if (!(va.flags & VIDEO_AUDIO_VOLUME))
3417                                         *c = no_ctl;
3418                                 break;
3419                         case V4L2_CID_AUDIO_BALANCE:
3420                                 if (!(va.flags & VIDEO_AUDIO_BALANCE))
3421                                         *c = no_ctl;
3422                                 break;
3423                         case V4L2_CID_AUDIO_BASS:
3424                                 if (!(va.flags & VIDEO_AUDIO_BASS))
3425                                         *c = no_ctl;
3426                                 break;
3427                         case V4L2_CID_AUDIO_TREBLE:
3428                                 if (!(va.flags & VIDEO_AUDIO_TREBLE))
3429                                         *c = no_ctl;
3430                                 break;
3431                         }
3432                 }
3433                 return 0;
3434         }
3435         case VIDIOC_G_CTRL:
3436                 return get_control(btv,arg);
3437         case VIDIOC_S_CTRL:
3438                 return set_control(btv,arg);
3439         case VIDIOC_G_PARM:
3440         {
3441                 struct v4l2_streamparm *parm = arg;
3442                 struct v4l2_standard s;
3443                 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
3444                         return -EINVAL;
3445                 memset(parm,0,sizeof(*parm));
3446                 v4l2_video_std_construct(&s, bttv_tvnorms[btv->tvnorm].v4l2_id,
3447                                          bttv_tvnorms[btv->tvnorm].name);
3448                 parm->parm.capture.timeperframe = s.frameperiod;
3449                 return 0;
3450         }
3451
3452         case VIDIOC_G_PRIORITY:
3453         {
3454                 enum v4l2_priority *p = arg;
3455
3456                 *p = v4l2_prio_max(&btv->prio);
3457                 return 0;
3458         }
3459         case VIDIOC_S_PRIORITY:
3460         {
3461                 enum v4l2_priority *prio = arg;
3462
3463                 return v4l2_prio_change(&btv->prio, &fh->prio, *prio);
3464         }
3465
3466         case VIDIOC_CROPCAP:
3467         {
3468                 struct v4l2_cropcap *cap = arg;
3469                 enum v4l2_buf_type type;
3470
3471                 type = cap->type;
3472
3473                 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3474                     type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3475                         return -EINVAL;
3476
3477                 *cap = bttv_tvnorms[btv->tvnorm].cropcap;
3478                 cap->type = type;
3479
3480                 return 0;
3481         }
3482         case VIDIOC_G_CROP:
3483         {
3484                 struct v4l2_crop * crop = arg;
3485
3486                 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3487                     crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3488                         return -EINVAL;
3489
3490                 /* No fh->do_crop = 1; because btv->crop[1] may be
3491                    inconsistent with fh->width or fh->height and apps
3492                    do not expect a change here. */
3493
3494                 crop->c = btv->crop[!!fh->do_crop].rect;
3495
3496                 return 0;
3497         }
3498         case VIDIOC_S_CROP:
3499         {
3500                 struct v4l2_crop *crop = arg;
3501                 const struct v4l2_rect *b;
3502                 struct bttv_crop c;
3503                 __s32 b_left;
3504                 __s32 b_top;
3505                 __s32 b_right;
3506                 __s32 b_bottom;
3507
3508                 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3509                     crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3510                         return -EINVAL;
3511
3512                 retval = v4l2_prio_check(&btv->prio,&fh->prio);
3513                 if (0 != retval)
3514                         return retval;
3515
3516                 /* Make sure tvnorm, vbi_end and the current cropping
3517                    parameters remain consistent until we're done. Note
3518                    read() may change vbi_end in check_alloc_btres(). */
3519                 mutex_lock(&btv->lock);
3520
3521                 retval = -EBUSY;
3522
3523                 if (locked_btres(fh->btv, VIDEO_RESOURCES))
3524                         goto btv_unlock_and_return;
3525
3526                 b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
3527
3528                 b_left = b->left;
3529                 b_right = b_left + b->width;
3530                 b_bottom = b->top + b->height;
3531
3532                 b_top = max(b->top, btv->vbi_end);
3533                 if (b_top + 32 >= b_bottom)
3534                         goto btv_unlock_and_return;
3535
3536                 /* Min. scaled size 48 x 32. */
3537                 c.rect.left = clamp(crop->c.left, b_left, b_right - 48);
3538                 c.rect.left = min(c.rect.left, (__s32) MAX_HDELAY);
3539
3540                 c.rect.width = clamp(crop->c.width,
3541                                      48, b_right - c.rect.left);
3542
3543                 c.rect.top = clamp(crop->c.top, b_top, b_bottom - 32);
3544                 /* Top and height must be a multiple of two. */
3545                 c.rect.top = (c.rect.top + 1) & ~1;
3546
3547                 c.rect.height = clamp(crop->c.height,
3548                                       32, b_bottom - c.rect.top);
3549                 c.rect.height = (c.rect.height + 1) & ~1;
3550
3551                 bttv_crop_calc_limits(&c);
3552
3553                 btv->crop[1] = c;
3554
3555                 mutex_unlock(&btv->lock);
3556
3557                 fh->do_crop = 1;
3558
3559                 mutex_lock(&fh->cap.lock);
3560
3561                 if (fh->width < c.min_scaled_width) {
3562                         fh->width = c.min_scaled_width;
3563                         btv->init.width = c.min_scaled_width;
3564                 } else if (fh->width > c.max_scaled_width) {
3565                         fh->width = c.max_scaled_width;
3566                         btv->init.width = c.max_scaled_width;
3567                 }
3568
3569                 if (fh->height < c.min_scaled_height) {
3570                         fh->height = c.min_scaled_height;
3571                         btv->init.height = c.min_scaled_height;
3572                 } else if (fh->height > c.max_scaled_height) {
3573                         fh->height = c.max_scaled_height;
3574                         btv->init.height = c.max_scaled_height;
3575                 }
3576
3577                 mutex_unlock(&fh->cap.lock);
3578
3579                 return 0;
3580         }
3581
3582         case VIDIOC_ENUMSTD:
3583         case VIDIOC_G_STD:
3584         case VIDIOC_S_STD:
3585         case VIDIOC_ENUMINPUT:
3586         case VIDIOC_G_INPUT:
3587         case VIDIOC_S_INPUT:
3588         case VIDIOC_G_TUNER:
3589         case VIDIOC_S_TUNER:
3590         case VIDIOC_G_FREQUENCY:
3591         case VIDIOC_S_FREQUENCY:
3592         case VIDIOC_LOG_STATUS:
3593         case VIDIOC_DBG_G_REGISTER:
3594         case VIDIOC_DBG_S_REGISTER:
3595                 return bttv_common_ioctls(btv,cmd,arg);
3596
3597         default:
3598                 return -ENOIOCTLCMD;
3599         }
3600         return 0;
3601
3602  fh_unlock_and_return:
3603         mutex_unlock(&fh->cap.lock);
3604         return retval;
3605
3606  btv_unlock_and_return:
3607         mutex_unlock(&btv->lock);
3608         return retval;
3609 }
3610
3611 static int bttv_ioctl(struct inode *inode, struct file *file,
3612                       unsigned int cmd, unsigned long arg)
3613 {
3614         struct bttv_fh *fh  = file->private_data;
3615
3616         switch (cmd) {
3617         case BTTV_VBISIZE:
3618         {
3619                 const struct bttv_tvnorm *tvnorm;
3620
3621                 tvnorm = fh->vbi_fmt.tvnorm;
3622
3623                 if (fh->vbi_fmt.fmt.start[0] != tvnorm->vbistart[0] ||
3624                     fh->vbi_fmt.fmt.start[1] != tvnorm->vbistart[1] ||
3625                     fh->vbi_fmt.fmt.count[0] != fh->vbi_fmt.fmt.count[1]) {
3626                         /* BTTV_VBISIZE cannot express these parameters,
3627                            however open() resets the paramters to defaults
3628                            and apps shouldn't call BTTV_VBISIZE after
3629                            VIDIOC_S_FMT. */
3630                         return -EINVAL;
3631                 }
3632
3633                 bttv_switch_type(fh,V4L2_BUF_TYPE_VBI_CAPTURE);
3634                 return (fh->vbi_fmt.fmt.count[0] * 2
3635                         * fh->vbi_fmt.fmt.samples_per_line);
3636         }
3637
3638         default:
3639                 return video_usercopy(inode, file, cmd, arg, bttv_do_ioctl);
3640         }
3641 }
3642
3643 static ssize_t bttv_read(struct file *file, char __user *data,
3644                          size_t count, loff_t *ppos)
3645 {
3646         struct bttv_fh *fh = file->private_data;
3647         int retval = 0;
3648
3649         if (fh->btv->errors)
3650                 bttv_reinit_bt848(fh->btv);
3651         dprintk("bttv%d: read count=%d type=%s\n",
3652                 fh->btv->c.nr,(int)count,v4l2_type_names[fh->type]);
3653
3654         switch (fh->type) {
3655         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3656                 if (!check_alloc_btres(fh->btv, fh, RESOURCE_VIDEO_READ)) {
3657                         /* VIDEO_READ in use by another fh,
3658                            or VIDEO_STREAM by any fh. */
3659                         return -EBUSY;
3660                 }
3661                 retval = videobuf_read_one(&fh->cap, data, count, ppos,
3662                                            file->f_flags & O_NONBLOCK);
3663                 free_btres(fh->btv, fh, RESOURCE_VIDEO_READ);
3664                 break;
3665         case V4L2_BUF_TYPE_VBI_CAPTURE:
3666                 if (!check_alloc_btres(fh->btv,fh,RESOURCE_VBI))
3667                         return -EBUSY;
3668                 retval = videobuf_read_stream(&fh->vbi, data, count, ppos, 1,
3669                                               file->f_flags & O_NONBLOCK);
3670                 break;
3671         default:
3672                 BUG();
3673         }
3674         return retval;
3675 }
3676
3677 static unsigned int bttv_poll(struct file *file, poll_table *wait)
3678 {
3679         struct bttv_fh *fh = file->private_data;
3680         struct bttv_buffer *buf;
3681         enum v4l2_field field;
3682
3683         if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
3684                 if (!check_alloc_btres(fh->btv,fh,RESOURCE_VBI))
3685                         return POLLERR;
3686                 return videobuf_poll_stream(file, &fh->vbi, wait);
3687         }
3688
3689         if (check_btres(fh,RESOURCE_VIDEO_STREAM)) {
3690                 /* streaming capture */
3691                 if (list_empty(&fh->cap.stream))
3692                         return POLLERR;
3693                 buf = list_entry(fh->cap.stream.next,struct bttv_buffer,vb.stream);
3694         } else {
3695                 /* read() capture */
3696                 mutex_lock(&fh->cap.lock);
3697                 if (NULL == fh->cap.read_buf) {
3698                         /* need to capture a new frame */
3699                         if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM)) {
3700                                 mutex_unlock(&fh->cap.lock);
3701                                 return POLLERR;
3702                         }
3703                         fh->cap.read_buf = videobuf_pci_alloc(fh->cap.msize);
3704                         if (NULL == fh->cap.read_buf) {
3705                                 mutex_unlock(&fh->cap.lock);
3706                                 return POLLERR;
3707                         }
3708                         fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR;
3709                         field = videobuf_next_field(&fh->cap);
3710                         if (0 != fh->cap.ops->buf_prepare(&fh->cap,fh->cap.read_buf,field)) {
3711                                 kfree (fh->cap.read_buf);
3712                                 fh->cap.read_buf = NULL;
3713                                 mutex_unlock(&fh->cap.lock);
3714                                 return POLLERR;
3715                         }
3716                         fh->cap.ops->buf_queue(&fh->cap,fh->cap.read_buf);
3717                         fh->cap.read_off = 0;
3718                 }
3719                 mutex_unlock(&fh->cap.lock);
3720                 buf = (struct bttv_buffer*)fh->cap.read_buf;
3721         }
3722
3723         poll_wait(file, &buf->vb.done, wait);
3724         if (buf->vb.state == STATE_DONE ||
3725             buf->vb.state == STATE_ERROR)
3726                 return POLLIN|POLLRDNORM;
3727         return 0;
3728 }
3729
3730 static int bttv_open(struct inode *inode, struct file *file)
3731 {
3732         int minor = iminor(inode);
3733         struct bttv *btv = NULL;
3734         struct bttv_fh *fh;
3735         enum v4l2_buf_type type = 0;
3736         unsigned int i;
3737
3738         dprintk(KERN_DEBUG "bttv: open minor=%d\n",minor);
3739
3740         for (i = 0; i < bttv_num; i++) {
3741                 if (bttvs[i].video_dev &&
3742                     bttvs[i].video_dev->minor == minor) {
3743                         btv = &bttvs[i];
3744                         type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
3745                         break;
3746                 }
3747                 if (bttvs[i].vbi_dev &&
3748                     bttvs[i].vbi_dev->minor == minor) {
3749                         btv = &bttvs[i];
3750                         type = V4L2_BUF_TYPE_VBI_CAPTURE;
3751                         break;
3752                 }
3753         }
3754         if (NULL == btv)
3755                 return -ENODEV;
3756
3757         dprintk(KERN_DEBUG "bttv%d: open called (type=%s)\n",
3758                 btv->c.nr,v4l2_type_names[type]);
3759
3760         /* allocate per filehandle data */
3761         fh = kmalloc(sizeof(*fh),GFP_KERNEL);
3762         if (NULL == fh)
3763                 return -ENOMEM;
3764         file->private_data = fh;
3765         *fh = btv->init;
3766         fh->type = type;
3767         fh->ov.setup_ok = 0;
3768         v4l2_prio_open(&btv->prio,&fh->prio);
3769
3770         videobuf_queue_pci_init(&fh->cap, &bttv_video_qops,
3771                             btv->c.pci, &btv->s_lock,
3772                             V4L2_BUF_TYPE_VIDEO_CAPTURE,
3773                             V4L2_FIELD_INTERLACED,
3774                             sizeof(struct bttv_buffer),
3775                             fh);
3776         videobuf_queue_pci_init(&fh->vbi, &bttv_vbi_qops,
3777                             btv->c.pci, &btv->s_lock,
3778                             V4L2_BUF_TYPE_VBI_CAPTURE,
3779                             V4L2_FIELD_SEQ_TB,
3780                             sizeof(struct bttv_buffer),
3781                             fh);
3782         i2c_vidiocschan(btv);
3783
3784         btv->users++;
3785
3786         /* The V4L2 spec requires one global set of cropping parameters
3787            which only change on request. These are stored in btv->crop[1].
3788            However for compatibility with V4L apps and cropping unaware
3789            V4L2 apps we now reset the cropping parameters as seen through
3790            this fh, which is to say VIDIOC_G_CROP and scaling limit checks
3791            will use btv->crop[0], the default cropping parameters for the
3792            current video standard, and VIDIOC_S_FMT will not implicitely
3793            change the cropping parameters until VIDIOC_S_CROP has been
3794            called. */
3795         fh->do_crop = !reset_crop; /* module parameter */
3796
3797         /* Likewise there should be one global set of VBI capture
3798            parameters, but for compatibility with V4L apps and earlier
3799            driver versions each fh has its own parameters. */
3800         bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm);
3801
3802         bttv_field_count(btv);
3803         return 0;
3804 }
3805
3806 static int bttv_release(struct inode *inode, struct file *file)
3807 {
3808         struct bttv_fh *fh = file->private_data;
3809         struct bttv *btv = fh->btv;
3810
3811         /* turn off overlay */
3812         if (check_btres(fh, RESOURCE_OVERLAY))
3813                 bttv_switch_overlay(btv,fh,NULL);
3814
3815         /* stop video capture */
3816         if (check_btres(fh, RESOURCE_VIDEO_STREAM)) {
3817                 videobuf_streamoff(&fh->cap);
3818                 free_btres(btv,fh,RESOURCE_VIDEO_STREAM);
3819         }
3820         if (fh->cap.read_buf) {
3821                 buffer_release(&fh->cap,fh->cap.read_buf);
3822                 kfree(fh->cap.read_buf);
3823         }
3824         if (check_btres(fh, RESOURCE_VIDEO_READ)) {
3825                 free_btres(btv, fh, RESOURCE_VIDEO_READ);
3826         }
3827
3828         /* stop vbi capture */
3829         if (check_btres(fh, RESOURCE_VBI)) {
3830                 if (fh->vbi.streaming)
3831                         videobuf_streamoff(&fh->vbi);
3832                 if (fh->vbi.reading)
3833                         videobuf_read_stop(&fh->vbi);
3834                 free_btres(btv,fh,RESOURCE_VBI);
3835         }
3836
3837         /* free stuff */
3838         videobuf_mmap_free(&fh->cap);
3839         videobuf_mmap_free(&fh->vbi);
3840         v4l2_prio_close(&btv->prio,&fh->prio);
3841         file->private_data = NULL;
3842         kfree(fh);
3843
3844         btv->users--;
3845         bttv_field_count(btv);
3846         return 0;
3847 }
3848
3849 static int
3850 bttv_mmap(struct file *file, struct vm_area_struct *vma)
3851 {
3852         struct bttv_fh *fh = file->private_data;
3853
3854         dprintk("bttv%d: mmap type=%s 0x%lx+%ld\n",
3855                 fh->btv->c.nr, v4l2_type_names[fh->type],
3856                 vma->vm_start, vma->vm_end - vma->vm_start);
3857         return videobuf_mmap_mapper(bttv_queue(fh),vma);
3858 }
3859
3860 static const struct file_operations bttv_fops =
3861 {
3862         .owner    = THIS_MODULE,
3863         .open     = bttv_open,
3864         .release  = bttv_release,
3865         .ioctl    = bttv_ioctl,
3866         .compat_ioctl   = v4l_compat_ioctl32,
3867         .llseek   = no_llseek,
3868         .read     = bttv_read,
3869         .mmap     = bttv_mmap,
3870         .poll     = bttv_poll,
3871 };
3872
3873 static struct video_device bttv_video_template =
3874 {
3875         .name     = "UNSET",
3876         .type     = VID_TYPE_CAPTURE|VID_TYPE_TUNER|
3877                     VID_TYPE_CLIPPING|VID_TYPE_SCALES,
3878         .hardware = VID_HARDWARE_BT848,
3879         .fops     = &bttv_fops,
3880         .minor    = -1,
3881 };
3882
3883 static struct video_device bttv_vbi_template =
3884 {
3885         .name     = "bt848/878 vbi",
3886         .type     = VID_TYPE_TUNER|VID_TYPE_TELETEXT,
3887         .hardware = VID_HARDWARE_BT848,
3888         .fops     = &bttv_fops,
3889         .minor    = -1,
3890 };
3891
3892 /* ----------------------------------------------------------------------- */
3893 /* radio interface                                                         */
3894
3895 static int radio_open(struct inode *inode, struct file *file)
3896 {
3897         int minor = iminor(inode);
3898         struct bttv *btv = NULL;
3899         unsigned int i;
3900
3901         dprintk("bttv: open minor=%d\n",minor);
3902
3903         for (i = 0; i < bttv_num; i++) {
3904                 if (bttvs[i].radio_dev->minor == minor) {
3905                         btv = &bttvs[i];
3906                         break;
3907                 }
3908         }
3909         if (NULL == btv)
3910                 return -ENODEV;
3911
3912         dprintk("bttv%d: open called (radio)\n",btv->c.nr);
3913         mutex_lock(&btv->lock);
3914
3915         btv->radio_user++;
3916
3917         file->private_data = btv;
3918
3919         bttv_call_i2c_clients(btv,AUDC_SET_RADIO,NULL);
3920         audio_input(btv,TVAUDIO_INPUT_RADIO);
3921
3922         mutex_unlock(&btv->lock);
3923         return 0;
3924 }
3925
3926 static int radio_release(struct inode *inode, struct file *file)
3927 {
3928         struct bttv        *btv = file->private_data;
3929         struct rds_command cmd;
3930
3931         btv->radio_user--;
3932
3933         bttv_call_i2c_clients(btv, RDS_CMD_CLOSE, &cmd);
3934
3935         return 0;
3936 }
3937
3938 static int radio_do_ioctl(struct inode *inode, struct file *file,
3939                           unsigned int cmd, void *arg)
3940 {
3941         struct bttv    *btv = file->private_data;
3942
3943         switch (cmd) {
3944         case VIDIOCGCAP:
3945         {
3946                 struct video_capability *cap = arg;
3947
3948                 memset(cap,0,sizeof(*cap));
3949                 strcpy(cap->name,btv->radio_dev->name);
3950                 cap->type = VID_TYPE_TUNER;
3951                 cap->channels = 1;
3952                 cap->audios = 1;
3953                 return 0;
3954         }
3955
3956         case VIDIOCGTUNER:
3957         {
3958                 struct video_tuner *v = arg;
3959
3960                 if(v->tuner)
3961                         return -EINVAL;
3962                 memset(v,0,sizeof(*v));
3963                 strcpy(v->name, "Radio");
3964                 bttv_call_i2c_clients(btv,cmd,v);
3965                 return 0;
3966         }
3967         case VIDIOCSTUNER:
3968                 /* nothing to do */
3969                 return 0;
3970
3971         case BTTV_VERSION:
3972         case VIDIOCGFREQ:
3973         case VIDIOCSFREQ:
3974         case VIDIOCGAUDIO:
3975         case VIDIOCSAUDIO:
3976         case VIDIOC_LOG_STATUS:
3977         case VIDIOC_DBG_G_REGISTER:
3978         case VIDIOC_DBG_S_REGISTER:
3979                 return bttv_common_ioctls(btv,cmd,arg);
3980
3981         default:
3982                 return -ENOIOCTLCMD;
3983         }
3984         return 0;
3985 }
3986
3987 static int radio_ioctl(struct inode *inode, struct file *file,
3988                        unsigned int cmd, unsigned long arg)
3989 {
3990         return video_usercopy(inode, file, cmd, arg, radio_do_ioctl);
3991 }
3992
3993 static ssize_t radio_read(struct file *file, char __user *data,
3994                          size_t count, loff_t *ppos)
3995 {
3996         struct bttv    *btv = file->private_data;
3997         struct rds_command cmd;
3998         cmd.block_count = count/3;
3999         cmd.buffer = data;
4000         cmd.instance = file;
4001         cmd.result = -ENODEV;
4002
4003         bttv_call_i2c_clients(btv, RDS_CMD_READ, &cmd);
4004
4005         return cmd.result;
4006 }
4007
4008 static unsigned int radio_poll(struct file *file, poll_table *wait)
4009 {
4010         struct bttv    *btv = file->private_data;
4011         struct rds_command cmd;
4012         cmd.instance = file;
4013         cmd.event_list = wait;
4014         cmd.result = -ENODEV;
4015         bttv_call_i2c_clients(btv, RDS_CMD_POLL, &cmd);
4016
4017         return cmd.result;
4018 }
4019
4020 static const struct file_operations radio_fops =
4021 {
4022         .owner    = THIS_MODULE,
4023         .open     = radio_open,
4024         .read     = radio_read,
4025         .release  = radio_release,
4026         .ioctl    = radio_ioctl,
4027         .llseek   = no_llseek,
4028         .poll     = radio_poll,
4029 };
4030
4031 static struct video_device radio_template =
4032 {
4033         .name     = "bt848/878 radio",
4034         .type     = VID_TYPE_TUNER,
4035         .hardware = VID_HARDWARE_BT848,
4036         .fops     = &radio_fops,
4037         .minor    = -1,
4038 };
4039
4040 /* ----------------------------------------------------------------------- */
4041 /* some debug code                                                         */
4042
4043 static int bttv_risc_decode(u32 risc)
4044 {
4045         static char *instr[16] = {
4046                 [ BT848_RISC_WRITE     >> 28 ] = "write",
4047                 [ BT848_RISC_SKIP      >> 28 ] = "skip",
4048                 [ BT848_RISC_WRITEC    >> 28 ] = "writec",
4049                 [ BT848_RISC_JUMP      >> 28 ] = "jump",
4050                 [ BT848_RISC_SYNC      >> 28 ] = "sync",
4051                 [ BT848_RISC_WRITE123  >> 28 ] = "write123",
4052                 [ BT848_RISC_SKIP123   >> 28 ] = "skip123",
4053                 [ BT848_RISC_WRITE1S23 >> 28 ] = "write1s23",
4054         };
4055         static int incr[16] = {
4056                 [ BT848_RISC_WRITE     >> 28 ] = 2,
4057                 [ BT848_RISC_JUMP      >> 28 ] = 2,
4058                 [ BT848_RISC_SYNC      >> 28 ] = 2,
4059                 [ BT848_RISC_WRITE123  >> 28 ] = 5,
4060                 [ BT848_RISC_SKIP123   >> 28 ] = 2,
4061                 [ BT848_RISC_WRITE1S23 >> 28 ] = 3,
4062         };
4063         static char *bits[] = {
4064                 "be0",  "be1",  "be2",  "be3/resync",
4065                 "set0", "set1", "set2", "set3",
4066                 "clr0", "clr1", "clr2", "clr3",
4067                 "irq",  "res",  "eol",  "sol",
4068         };
4069         int i;
4070
4071         printk("0x%08x [ %s", risc,
4072                instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
4073         for (i = ARRAY_SIZE(bits)-1; i >= 0; i--)
4074                 if (risc & (1 << (i + 12)))
4075                         printk(" %s",bits[i]);
4076         printk(" count=%d ]\n", risc & 0xfff);
4077         return incr[risc >> 28] ? incr[risc >> 28] : 1;
4078 }
4079
4080 static void bttv_risc_disasm(struct bttv *btv,
4081                              struct btcx_riscmem *risc)
4082 {
4083         unsigned int i,j,n;
4084
4085         printk("%s: risc disasm: %p [dma=0x%08lx]\n",
4086                btv->c.name, risc->cpu, (unsigned long)risc->dma);
4087         for (i = 0; i < (risc->size >> 2); i += n) {
4088                 printk("%s:   0x%lx: ", btv->c.name,
4089                        (unsigned long)(risc->dma + (i<<2)));
4090                 n = bttv_risc_decode(risc->cpu[i]);
4091                 for (j = 1; j < n; j++)
4092                         printk("%s:   0x%lx: 0x%08x [ arg #%d ]\n",
4093                                btv->c.name, (unsigned long)(risc->dma + ((i+j)<<2)),
4094                                risc->cpu[i+j], j);
4095                 if (0 == risc->cpu[i])
4096                         break;
4097         }
4098 }
4099
4100 static void bttv_print_riscaddr(struct bttv *btv)
4101 {
4102         printk("  main: %08Lx\n",
4103                (unsigned long long)btv->main.dma);
4104         printk("  vbi : o=%08Lx e=%08Lx\n",
4105                btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0,
4106                btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0);
4107         printk("  cap : o=%08Lx e=%08Lx\n",
4108                btv->curr.top    ? (unsigned long long)btv->curr.top->top.dma : 0,
4109                btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
4110         printk("  scr : o=%08Lx e=%08Lx\n",
4111                btv->screen ? (unsigned long long)btv->screen->top.dma : 0,
4112                btv->screen ? (unsigned long long)btv->screen->bottom.dma : 0);
4113         bttv_risc_disasm(btv, &btv->main);
4114 }
4115
4116 /* ----------------------------------------------------------------------- */
4117 /* irq handler                                                             */
4118
4119 static char *irq_name[] = {
4120         "FMTCHG",  // format change detected (525 vs. 625)
4121         "VSYNC",   // vertical sync (new field)
4122         "HSYNC",   // horizontal sync
4123         "OFLOW",   // chroma/luma AGC overflow
4124         "HLOCK",   // horizontal lock changed
4125         "VPRES",   // video presence changed
4126         "6", "7",
4127         "I2CDONE", // hw irc operation finished
4128         "GPINT",   // gpio port triggered irq
4129         "10",
4130         "RISCI",   // risc instruction triggered irq
4131         "FBUS",    // pixel data fifo dropped data (high pci bus latencies)
4132         "FTRGT",   // pixel data fifo overrun
4133         "FDSR",    // fifo data stream resyncronisation
4134         "PPERR",   // parity error (data transfer)
4135         "RIPERR",  // parity error (read risc instructions)
4136         "PABORT",  // pci abort
4137         "OCERR",   // risc instruction error
4138         "SCERR",   // syncronisation error
4139 };
4140
4141 static void bttv_print_irqbits(u32 print, u32 mark)
4142 {
4143         unsigned int i;
4144
4145         printk("bits:");
4146         for (i = 0; i < ARRAY_SIZE(irq_name); i++) {
4147                 if (print & (1 << i))
4148                         printk(" %s",irq_name[i]);
4149                 if (mark & (1 << i))
4150                         printk("*");
4151         }
4152 }
4153
4154 static void bttv_irq_debug_low_latency(struct bttv *btv, u32 rc)
4155 {
4156         printk("bttv%d: irq: skipped frame [main=%lx,o_vbi=%lx,o_field=%lx,rc=%lx]\n",
4157                btv->c.nr,
4158                (unsigned long)btv->main.dma,
4159                (unsigned long)btv->main.cpu[RISC_SLOT_O_VBI+1],
4160                (unsigned long)btv->main.cpu[RISC_SLOT_O_FIELD+1],
4161                (unsigned long)rc);
4162
4163         if (0 == (btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC)) {
4164                 printk("bttv%d: Oh, there (temporarely?) is no input signal. "
4165                        "Ok, then this is harmless, don't worry ;)\n",
4166                        btv->c.nr);
4167                 return;
4168         }
4169         printk("bttv%d: Uhm. Looks like we have unusual high IRQ latencies.\n",
4170                btv->c.nr);
4171         printk("bttv%d: Lets try to catch the culpit red-handed ...\n",
4172                btv->c.nr);
4173         dump_stack();
4174 }
4175
4176 static int
4177 bttv_irq_next_video(struct bttv *btv, struct bttv_buffer_set *set)
4178 {
4179         struct bttv_buffer *item;
4180
4181         memset(set,0,sizeof(*set));
4182
4183         /* capture request ? */
4184         if (!list_empty(&btv->capture)) {
4185                 set->frame_irq = 1;
4186                 item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
4187                 if (V4L2_FIELD_HAS_TOP(item->vb.field))
4188                         set->top    = item;
4189                 if (V4L2_FIELD_HAS_BOTTOM(item->vb.field))
4190                         set->bottom = item;
4191
4192                 /* capture request for other field ? */
4193                 if (!V4L2_FIELD_HAS_BOTH(item->vb.field) &&
4194                     (item->vb.queue.next != &btv->capture)) {
4195                         item = list_entry(item->vb.queue.next, struct bttv_buffer, vb.queue);
4196                         if (!V4L2_FIELD_HAS_BOTH(item->vb.field)) {
4197                                 if (NULL == set->top &&
4198                                     V4L2_FIELD_TOP == item->vb.field) {
4199                                         set->top = item;
4200                                 }
4201                                 if (NULL == set->bottom &&
4202                                     V4L2_FIELD_BOTTOM == item->vb.field) {
4203                                         set->bottom = item;
4204                                 }
4205                                 if (NULL != set->top  &&  NULL != set->bottom)
4206                                         set->top_irq = 2;
4207                         }
4208                 }
4209         }
4210
4211         /* screen overlay ? */
4212         if (NULL != btv->screen) {
4213                 if (V4L2_FIELD_HAS_BOTH(btv->screen->vb.field)) {
4214                         if (NULL == set->top && NULL == set->bottom) {
4215                                 set->top    = btv->screen;
4216                                 set->bottom = btv->screen;
4217                         }
4218                 } else {
4219                         if (V4L2_FIELD_TOP == btv->screen->vb.field &&
4220                             NULL == set->top) {
4221                                 set->top = btv->screen;
4222                         }
4223                         if (V4L2_FIELD_BOTTOM == btv->screen->vb.field &&
4224                             NULL == set->bottom) {
4225                                 set->bottom = btv->screen;
4226                         }
4227                 }
4228         }
4229
4230         dprintk("bttv%d: next set: top=%p bottom=%p [screen=%p,irq=%d,%d]\n",
4231                 btv->c.nr,set->top, set->bottom,
4232                 btv->screen,set->frame_irq,set->top_irq);
4233         return 0;
4234 }
4235
4236 static void
4237 bttv_irq_wakeup_video(struct bttv *btv, struct bttv_buffer_set *wakeup,
4238                       struct bttv_buffer_set *curr, unsigned int state)
4239 {
4240         struct timeval ts;
4241
4242         do_gettimeofday(&ts);
4243
4244         if (wakeup->top == wakeup->bottom) {
4245                 if (NULL != wakeup->top && curr->top != wakeup->top) {
4246                         if (irq_debug > 1)
4247                                 printk("bttv%d: wakeup: both=%p\n",btv->c.nr,wakeup->top);
4248                         wakeup->top->vb.ts = ts;
4249                         wakeup->top->vb.field_count = btv->field_count;
4250                         wakeup->top->vb.state = state;
4251                         wake_up(&wakeup->top->vb.done);
4252                 }
4253         } else {
4254                 if (NULL != wakeup->top && curr->top != wakeup->top) {
4255                         if (irq_debug > 1)
4256                                 printk("bttv%d: wakeup: top=%p\n",btv->c.nr,wakeup->top);
4257                         wakeup->top->vb.ts = ts;
4258                         wakeup->top->vb.field_count = btv->field_count;
4259                         wakeup->top->vb.state = state;
4260                         wake_up(&wakeup->top->vb.done);
4261                 }
4262                 if (NULL != wakeup->bottom && curr->bottom != wakeup->bottom) {
4263                         if (irq_debug > 1)
4264                                 printk("bttv%d: wakeup: bottom=%p\n",btv->c.nr,wakeup->bottom);
4265                         wakeup->bottom->vb.ts = ts;
4266                         wakeup->bottom->vb.field_count = btv->field_count;
4267                         wakeup->bottom->vb.state = state;
4268                         wake_up(&wakeup->bottom->vb.done);
4269                 }
4270         }
4271 }
4272
4273 static void
4274 bttv_irq_wakeup_vbi(struct bttv *btv, struct bttv_buffer *wakeup,
4275                     unsigned int state)
4276 {
4277         struct timeval ts;
4278
4279         if (NULL == wakeup)
4280                 return;
4281
4282         do_gettimeofday(&ts);
4283         wakeup->vb.ts = ts;
4284         wakeup->vb.field_count = btv->field_count;
4285         wakeup->vb.state = state;
4286         wake_up(&wakeup->vb.done);
4287 }
4288
4289 static void bttv_irq_timeout(unsigned long data)
4290 {
4291         struct bttv *btv = (struct bttv *)data;
4292         struct bttv_buffer_set old,new;
4293         struct bttv_buffer *ovbi;
4294         struct bttv_buffer *item;
4295         unsigned long flags;
4296
4297         if (bttv_verbose) {
4298                 printk(KERN_INFO "bttv%d: timeout: drop=%d irq=%d/%d, risc=%08x, ",
4299                        btv->c.nr, btv->framedrop, btv->irq_me, btv->irq_total,
4300                        btread(BT848_RISC_COUNT));
4301                 bttv_print_irqbits(btread(BT848_INT_STAT),0);
4302                 printk("\n");
4303         }
4304
4305         spin_lock_irqsave(&btv->s_lock,flags);
4306
4307         /* deactivate stuff */
4308         memset(&new,0,sizeof(new));
4309         old  = btv->curr;
4310         ovbi = btv->cvbi;
4311         btv->curr = new;
4312         btv->cvbi = NULL;
4313         btv->loop_irq = 0;
4314         bttv_buffer_activate_video(btv, &new);
4315         bttv_buffer_activate_vbi(btv,   NULL);
4316         bttv_set_dma(btv, 0);
4317
4318         /* wake up */
4319         bttv_irq_wakeup_video(btv, &old, &new, STATE_ERROR);
4320         bttv_irq_wakeup_vbi(btv, ovbi, STATE_ERROR);
4321
4322         /* cancel all outstanding capture / vbi requests */
4323         while (!list_empty(&btv->capture)) {
4324                 item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
4325                 list_del(&item->vb.queue);
4326                 item->vb.state = STATE_ERROR;
4327                 wake_up(&item->vb.done);
4328         }
4329         while (!list_empty(&btv->vcapture)) {
4330                 item = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
4331                 list_del(&item->vb.queue);
4332                 item->vb.state = STATE_ERROR;
4333                 wake_up(&item->vb.done);
4334         }
4335
4336         btv->errors++;
4337         spin_unlock_irqrestore(&btv->s_lock,flags);
4338 }
4339
4340 static void
4341 bttv_irq_wakeup_top(struct bttv *btv)
4342 {
4343         struct bttv_buffer *wakeup = btv->curr.top;
4344
4345         if (NULL == wakeup)
4346                 return;
4347
4348         spin_lock(&btv->s_lock);
4349         btv->curr.top_irq = 0;
4350         btv->curr.top = NULL;
4351         bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
4352
4353         do_gettimeofday(&wakeup->vb.ts);
4354         wakeup->vb.field_count = btv->field_count;
4355         wakeup->vb.state = STATE_DONE;
4356         wake_up(&wakeup->vb.done);
4357         spin_unlock(&btv->s_lock);
4358 }
4359
4360 static inline int is_active(struct btcx_riscmem *risc, u32 rc)
4361 {
4362         if (rc < risc->dma)
4363                 return 0;
4364         if (rc > risc->dma + risc->size)
4365                 return 0;
4366         return 1;
4367 }
4368
4369 static void
4370 bttv_irq_switch_video(struct bttv *btv)
4371 {
4372         struct bttv_buffer_set new;
4373         struct bttv_buffer_set old;
4374         dma_addr_t rc;
4375
4376         spin_lock(&btv->s_lock);
4377
4378         /* new buffer set */
4379         bttv_irq_next_video(btv, &new);
4380         rc = btread(BT848_RISC_COUNT);
4381         if ((btv->curr.top    && is_active(&btv->curr.top->top,       rc)) ||
4382             (btv->curr.bottom && is_active(&btv->curr.bottom->bottom, rc))) {
4383                 btv->framedrop++;
4384                 if (debug_latency)
4385                         bttv_irq_debug_low_latency(btv, rc);
4386                 spin_unlock(&btv->s_lock);
4387                 return;
4388         }
4389
4390         /* switch over */
4391         old = btv->curr;
4392         btv->curr = new;
4393         btv->loop_irq &= ~1;
4394         bttv_buffer_activate_video(btv, &new);
4395         bttv_set_dma(btv, 0);
4396
4397         /* switch input */
4398         if (UNSET != btv->new_input) {
4399                 video_mux(btv,btv->new_input);
4400                 btv->new_input = UNSET;
4401         }
4402
4403         /* wake up finished buffers */
4404         bttv_irq_wakeup_video(btv, &old, &new, STATE_DONE);
4405         spin_unlock(&btv->s_lock);
4406 }
4407
4408 static void
4409 bttv_irq_switch_vbi(struct bttv *btv)
4410 {
4411         struct bttv_buffer *new = NULL;
4412         struct bttv_buffer *old;
4413         u32 rc;
4414
4415         spin_lock(&btv->s_lock);
4416
4417         if (!list_empty(&btv->vcapture))
4418                 new = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
4419         old = btv->cvbi;
4420
4421         rc = btread(BT848_RISC_COUNT);
4422         if (NULL != old && (is_active(&old->top,    rc) ||
4423                             is_active(&old->bottom, rc))) {
4424                 btv->framedrop++;
4425                 if (debug_latency)
4426                         bttv_irq_debug_low_latency(btv, rc);
4427                 spin_unlock(&btv->s_lock);
4428                 return;
4429         }
4430
4431         /* switch */
4432         btv->cvbi = new;
4433         btv->loop_irq &= ~4;
4434         bttv_buffer_activate_vbi(btv, new);
4435         bttv_set_dma(btv, 0);
4436
4437         bttv_irq_wakeup_vbi(btv, old, STATE_DONE);
4438         spin_unlock(&btv->s_lock);
4439 }
4440
4441 static irqreturn_t bttv_irq(int irq, void *dev_id)
4442 {
4443         u32 stat,astat;
4444         u32 dstat;
4445         int count;
4446         struct bttv *btv;
4447         int handled = 0;
4448
4449         btv=(struct bttv *)dev_id;
4450
4451         if (btv->custom_irq)
4452                 handled = btv->custom_irq(btv);
4453
4454         count=0;
4455         while (1) {
4456                 /* get/clear interrupt status bits */
4457                 stat=btread(BT848_INT_STAT);
4458                 astat=stat&btread(BT848_INT_MASK);
4459                 if (!astat)
4460                         break;
4461                 handled = 1;
4462                 btwrite(stat,BT848_INT_STAT);
4463
4464                 /* get device status bits */
4465                 dstat=btread(BT848_DSTATUS);
4466
4467                 if (irq_debug) {
4468                         printk(KERN_DEBUG "bttv%d: irq loop=%d fc=%d "
4469                                "riscs=%x, riscc=%08x, ",
4470                                btv->c.nr, count, btv->field_count,
4471                                stat>>28, btread(BT848_RISC_COUNT));
4472                         bttv_print_irqbits(stat,astat);
4473                         if (stat & BT848_INT_HLOCK)
4474                                 printk("   HLOC => %s", (dstat & BT848_DSTATUS_HLOC)
4475                                        ? "yes" : "no");
4476                         if (stat & BT848_INT_VPRES)
4477                                 printk("   PRES => %s", (dstat & BT848_DSTATUS_PRES)
4478                                        ? "yes" : "no");
4479                         if (stat & BT848_INT_FMTCHG)
4480                                 printk("   NUML => %s", (dstat & BT848_DSTATUS_NUML)
4481                                        ? "625" : "525");
4482                         printk("\n");
4483                 }
4484
4485                 if (astat&BT848_INT_VSYNC)
4486                         btv->field_count++;
4487
4488                 if ((astat & BT848_INT_GPINT) && btv->remote) {
4489                         wake_up(&btv->gpioq);
4490                         bttv_input_irq(btv);
4491                 }
4492
4493                 if (astat & BT848_INT_I2CDONE) {
4494                         btv->i2c_done = stat;
4495                         wake_up(&btv->i2c_queue);
4496                 }
4497
4498                 if ((astat & BT848_INT_RISCI)  &&  (stat & (4<<28)))
4499                         bttv_irq_switch_vbi(btv);
4500
4501                 if ((astat & BT848_INT_RISCI)  &&  (stat & (2<<28)))
4502                         bttv_irq_wakeup_top(btv);
4503
4504                 if ((astat & BT848_INT_RISCI)  &&  (stat & (1<<28)))
4505                         bttv_irq_switch_video(btv);
4506
4507                 if ((astat & BT848_INT_HLOCK)  &&  btv->opt_automute)
4508                         audio_mute(btv, btv->mute);  /* trigger automute */
4509
4510                 if (astat & (BT848_INT_SCERR|BT848_INT_OCERR)) {
4511                         printk(KERN_INFO "bttv%d: %s%s @ %08x,",btv->c.nr,
4512                                (astat & BT848_INT_SCERR) ? "SCERR" : "",
4513                                (astat & BT848_INT_OCERR) ? "OCERR" : "",
4514                                btread(BT848_RISC_COUNT));
4515                         bttv_print_irqbits(stat,astat);
4516                         printk("\n");
4517                         if (bttv_debug)
4518                                 bttv_print_riscaddr(btv);
4519                 }
4520                 if (fdsr && astat & BT848_INT_FDSR) {
4521                         printk(KERN_INFO "bttv%d: FDSR @ %08x\n",
4522                                btv->c.nr,btread(BT848_RISC_COUNT));
4523                         if (bttv_debug)
4524                                 bttv_print_riscaddr(btv);
4525                 }
4526
4527                 count++;
4528                 if (count > 4) {
4529
4530                         if (count > 8 || !(astat & BT848_INT_GPINT)) {
4531                                 btwrite(0, BT848_INT_MASK);
4532
4533                                 printk(KERN_ERR
4534                                            "bttv%d: IRQ lockup, cleared int mask [", btv->c.nr);
4535                         } else {
4536                                 printk(KERN_ERR
4537                                            "bttv%d: IRQ lockup, clearing GPINT from int mask [", btv->c.nr);
4538
4539                                 btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT),
4540                                                 BT848_INT_MASK);
4541                         };
4542
4543                         bttv_print_irqbits(stat,astat);
4544
4545                         printk("]\n");
4546                 }
4547         }
4548         btv->irq_total++;
4549         if (handled)
4550                 btv->irq_me++;
4551         return IRQ_RETVAL(handled);
4552 }
4553
4554
4555 /* ----------------------------------------------------------------------- */
4556 /* initialitation                                                          */
4557
4558 static struct video_device *vdev_init(struct bttv *btv,
4559                                       struct video_device *template,
4560                                       char *type)
4561 {
4562         struct video_device *vfd;
4563
4564         vfd = video_device_alloc();
4565         if (NULL == vfd)
4566                 return NULL;
4567         *vfd = *template;
4568         vfd->minor   = -1;
4569         vfd->dev     = &btv->c.pci->dev;
4570         vfd->release = video_device_release;
4571         snprintf(vfd->name, sizeof(vfd->name), "BT%d%s %s (%s)",
4572                  btv->id, (btv->id==848 && btv->revision==0x12) ? "A" : "",
4573                  type, bttv_tvcards[btv->c.type].name);
4574         return vfd;
4575 }
4576
4577 static void bttv_unregister_video(struct bttv *btv)
4578 {
4579         if (btv->video_dev) {
4580                 if (-1 != btv->video_dev->minor)
4581                         video_unregister_device(btv->video_dev);
4582                 else
4583                         video_device_release(btv->video_dev);
4584                 btv->video_dev = NULL;
4585         }
4586         if (btv->vbi_dev) {
4587                 if (-1 != btv->vbi_dev->minor)
4588                         video_unregister_device(btv->vbi_dev);
4589                 else
4590                         video_device_release(btv->vbi_dev);
4591                 btv->vbi_dev = NULL;
4592         }
4593         if (btv->radio_dev) {
4594                 if (-1 != btv->radio_dev->minor)
4595                         video_unregister_device(btv->radio_dev);
4596                 else
4597                         video_device_release(btv->radio_dev);
4598                 btv->radio_dev = NULL;
4599         }
4600 }
4601
4602 /* register video4linux devices */
4603 static int __devinit bttv_register_video(struct bttv *btv)
4604 {
4605         if (no_overlay <= 0) {
4606                 bttv_video_template.type |= VID_TYPE_OVERLAY;
4607         } else {
4608                 printk("bttv: Overlay support disabled.\n");
4609         }
4610
4611         /* video */
4612         btv->video_dev = vdev_init(btv, &bttv_video_template, "video");
4613         if (NULL == btv->video_dev)
4614                 goto err;
4615         if (video_register_device(btv->video_dev,VFL_TYPE_GRABBER,video_nr)<0)
4616                 goto err;
4617         printk(KERN_INFO "bttv%d: registered device video%d\n",
4618                btv->c.nr,btv->video_dev->minor & 0x1f);
4619         if (device_create_file(&btv->video_dev->class_dev,
4620                                      &dev_attr_card)<0) {
4621                 printk(KERN_ERR "bttv%d: device_create_file 'card' "
4622                        "failed\n", btv->c.nr);
4623                 goto err;
4624         }
4625
4626         /* vbi */
4627         btv->vbi_dev = vdev_init(btv, &bttv_vbi_template, "vbi");
4628         if (NULL == btv->vbi_dev)
4629                 goto err;
4630         if (video_register_device(btv->vbi_dev,VFL_TYPE_VBI,vbi_nr)<0)
4631                 goto err;
4632         printk(KERN_INFO "bttv%d: registered device vbi%d\n",
4633                btv->c.nr,btv->vbi_dev->minor & 0x1f);
4634
4635         if (!btv->has_radio)
4636                 return 0;
4637         /* radio */
4638         btv->radio_dev = vdev_init(btv, &radio_template, "radio");
4639         if (NULL == btv->radio_dev)
4640                 goto err;
4641         if (video_register_device(btv->radio_dev, VFL_TYPE_RADIO,radio_nr)<0)
4642                 goto err;
4643         printk(KERN_INFO "bttv%d: registered device radio%d\n",
4644                btv->c.nr,btv->radio_dev->minor & 0x1f);
4645
4646         /* all done */
4647         return 0;
4648
4649  err:
4650         bttv_unregister_video(btv);
4651         return -1;
4652 }
4653
4654
4655 /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
4656 /* response on cards with no firmware is not enabled by OF */
4657 static void pci_set_command(struct pci_dev *dev)
4658 {
4659 #if defined(__powerpc__)
4660         unsigned int cmd;
4661
4662         pci_read_config_dword(dev, PCI_COMMAND, &cmd);
4663         cmd = (cmd | PCI_COMMAND_MEMORY );
4664         pci_write_config_dword(dev, PCI_COMMAND, cmd);
4665 #endif
4666 }
4667
4668 static int __devinit bttv_probe(struct pci_dev *dev,
4669                                 const struct pci_device_id *pci_id)
4670 {
4671         int result;
4672         unsigned char lat;
4673         struct bttv *btv;
4674
4675         if (bttv_num == BTTV_MAX)
4676                 return -ENOMEM;
4677         printk(KERN_INFO "bttv: Bt8xx card found (%d).\n", bttv_num);
4678         btv=&bttvs[bttv_num];
4679         memset(btv,0,sizeof(*btv));
4680         btv->c.nr  = bttv_num;
4681         sprintf(btv->c.name,"bttv%d",btv->c.nr);
4682
4683         /* initialize structs / fill in defaults */
4684         mutex_init(&btv->lock);
4685         spin_lock_init(&btv->s_lock);
4686         spin_lock_init(&btv->gpio_lock);
4687         init_waitqueue_head(&btv->gpioq);
4688         init_waitqueue_head(&btv->i2c_queue);
4689         INIT_LIST_HEAD(&btv->c.subs);
4690         INIT_LIST_HEAD(&btv->capture);
4691         INIT_LIST_HEAD(&btv->vcapture);
4692         v4l2_prio_init(&btv->prio);
4693
4694         init_timer(&btv->timeout);
4695         btv->timeout.function = bttv_irq_timeout;
4696         btv->timeout.data     = (unsigned long)btv;
4697
4698         btv->i2c_rc = -1;
4699         btv->tuner_type  = UNSET;
4700         btv->new_input   = UNSET;
4701         btv->has_radio=radio[btv->c.nr];
4702
4703         /* pci stuff (init, get irq/mmio, ... */
4704         btv->c.pci = dev;
4705         btv->id  = dev->device;
4706         if (pci_enable_device(dev)) {
4707                 printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4708                        btv->c.nr);
4709                 return -EIO;
4710         }
4711         if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
4712                 printk(KERN_WARNING "bttv%d: No suitable DMA available.\n",
4713                        btv->c.nr);
4714                 return -EIO;
4715         }
4716         if (!request_mem_region(pci_resource_start(dev,0),
4717                                 pci_resource_len(dev,0),
4718                                 btv->c.name)) {
4719                 printk(KERN_WARNING "bttv%d: can't request iomem (0x%llx).\n",
4720                        btv->c.nr,
4721                        (unsigned long long)pci_resource_start(dev,0));
4722                 return -EBUSY;
4723         }
4724         pci_set_master(dev);
4725         pci_set_command(dev);
4726         pci_set_drvdata(dev,btv);
4727
4728         pci_read_config_byte(dev, PCI_CLASS_REVISION, &btv->revision);
4729         pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
4730         printk(KERN_INFO "bttv%d: Bt%d (rev %d) at %s, ",
4731                bttv_num,btv->id, btv->revision, pci_name(dev));
4732         printk("irq: %d, latency: %d, mmio: 0x%llx\n",
4733                btv->c.pci->irq, lat,
4734                (unsigned long long)pci_resource_start(dev,0));
4735         schedule();
4736
4737         btv->bt848_mmio = ioremap(pci_resource_start(dev, 0), 0x1000);
4738         if (NULL == btv->bt848_mmio) {
4739                 printk("bttv%d: ioremap() failed\n", btv->c.nr);
4740                 result = -EIO;
4741                 goto fail1;
4742         }
4743
4744         /* identify card */
4745         bttv_idcard(btv);
4746
4747         /* disable irqs, register irq handler */
4748         btwrite(0, BT848_INT_MASK);
4749         result = request_irq(btv->c.pci->irq, bttv_irq,
4750                              IRQF_SHARED | IRQF_DISABLED,btv->c.name,(void *)btv);
4751         if (result < 0) {
4752                 printk(KERN_ERR "bttv%d: can't get IRQ %d\n",
4753                        bttv_num,btv->c.pci->irq);
4754                 goto fail1;
4755         }
4756
4757         if (0 != bttv_handle_chipset(btv)) {
4758                 result = -EIO;
4759                 goto fail2;
4760         }
4761
4762         /* init options from insmod args */
4763         btv->opt_combfilter = combfilter;
4764         btv->opt_lumafilter = lumafilter;
4765         btv->opt_automute   = automute;
4766         btv->opt_chroma_agc = chroma_agc;
4767         btv->opt_adc_crush  = adc_crush;
4768         btv->opt_vcr_hack   = vcr_hack;
4769         btv->opt_whitecrush_upper  = whitecrush_upper;
4770         btv->opt_whitecrush_lower  = whitecrush_lower;
4771         btv->opt_uv_ratio   = uv_ratio;
4772         btv->opt_full_luma_range   = full_luma_range;
4773         btv->opt_coring     = coring;
4774
4775         /* fill struct bttv with some useful defaults */
4776         btv->init.btv         = btv;
4777         btv->init.ov.w.width  = 320;
4778         btv->init.ov.w.height = 240;
4779         btv->init.fmt         = format_by_palette(VIDEO_PALETTE_RGB24);
4780         btv->init.width       = 320;
4781         btv->init.height      = 240;
4782         btv->input = 0;
4783
4784         /* initialize hardware */
4785         if (bttv_gpio)
4786                 bttv_gpio_tracking(btv,"pre-init");
4787
4788         bttv_risc_init_main(btv);
4789         init_bt848(btv);
4790
4791         /* gpio */
4792         btwrite(0x00, BT848_GPIO_REG_INP);
4793         btwrite(0x00, BT848_GPIO_OUT_EN);
4794         if (bttv_verbose)
4795                 bttv_gpio_tracking(btv,"init");
4796
4797         /* needs to be done before i2c is registered */
4798         bttv_init_card1(btv);
4799
4800         /* register i2c + gpio */
4801         init_bttv_i2c(btv);
4802
4803         /* some card-specific stuff (needs working i2c) */
4804         bttv_init_card2(btv);
4805         init_irqreg(btv);
4806
4807         /* register video4linux + input */
4808         if (!bttv_tvcards[btv->c.type].no_video) {
4809                 bttv_register_video(btv);
4810                 bt848_bright(btv,32768);
4811                 bt848_contrast(btv,32768);
4812                 bt848_hue(btv,32768);
4813                 bt848_sat(btv,32768);
4814                 audio_mute(btv, 1);
4815                 set_input(btv, 0, btv->tvnorm);
4816                 bttv_crop_reset(&btv->crop[0], btv->tvnorm);
4817                 btv->crop[1] = btv->crop[0]; /* current = default */
4818                 disclaim_vbi_lines(btv);
4819                 disclaim_video_lines(btv);
4820         }
4821
4822         /* add subdevices and autoload dvb-bt8xx if needed */
4823         if (bttv_tvcards[btv->c.type].has_dvb) {
4824                 bttv_sub_add_device(&btv->c, "dvb");
4825                 request_modules(btv);
4826         }
4827
4828         bttv_input_init(btv);
4829
4830         /* everything is fine */
4831         bttv_num++;
4832         return 0;
4833
4834  fail2:
4835         free_irq(btv->c.pci->irq,btv);
4836
4837  fail1:
4838         if (btv->bt848_mmio)
4839                 iounmap(btv->bt848_mmio);
4840         release_mem_region(pci_resource_start(btv->c.pci,0),
4841                            pci_resource_len(btv->c.pci,0));
4842         pci_set_drvdata(dev,NULL);
4843         return result;
4844 }
4845
4846 static void __devexit bttv_remove(struct pci_dev *pci_dev)
4847 {
4848         struct bttv *btv = pci_get_drvdata(pci_dev);
4849
4850         if (bttv_verbose)
4851                 printk("bttv%d: unloading\n",btv->c.nr);
4852
4853         /* shutdown everything (DMA+IRQs) */
4854         btand(~15, BT848_GPIO_DMA_CTL);
4855         btwrite(0, BT848_INT_MASK);
4856         btwrite(~0x0, BT848_INT_STAT);
4857         btwrite(0x0, BT848_GPIO_OUT_EN);
4858         if (bttv_gpio)
4859                 bttv_gpio_tracking(btv,"cleanup");
4860
4861         /* tell gpio modules we are leaving ... */
4862         btv->shutdown=1;
4863         wake_up(&btv->gpioq);
4864         bttv_input_fini(btv);
4865         bttv_sub_del_devices(&btv->c);
4866
4867         /* unregister i2c_bus + input */
4868         fini_bttv_i2c(btv);
4869
4870         /* unregister video4linux */
4871         bttv_unregister_video(btv);
4872
4873         /* free allocated memory */
4874         btcx_riscmem_free(btv->c.pci,&btv->main);
4875
4876         /* free ressources */
4877         free_irq(btv->c.pci->irq,btv);
4878         iounmap(btv->bt848_mmio);
4879         release_mem_region(pci_resource_start(btv->c.pci,0),
4880                            pci_resource_len(btv->c.pci,0));
4881
4882         pci_set_drvdata(pci_dev, NULL);
4883         return;
4884 }
4885
4886 #ifdef CONFIG_PM
4887 static int bttv_suspend(struct pci_dev *pci_dev, pm_message_t state)
4888 {
4889         struct bttv *btv = pci_get_drvdata(pci_dev);
4890         struct bttv_buffer_set idle;
4891         unsigned long flags;
4892
4893         dprintk("bttv%d: suspend %d\n", btv->c.nr, state.event);
4894
4895         /* stop dma + irqs */
4896         spin_lock_irqsave(&btv->s_lock,flags);
4897         memset(&idle, 0, sizeof(idle));
4898         btv->state.video = btv->curr;
4899         btv->state.vbi   = btv->cvbi;
4900         btv->state.loop_irq = btv->loop_irq;
4901         btv->curr = idle;
4902         btv->loop_irq = 0;
4903         bttv_buffer_activate_video(btv, &idle);
4904         bttv_buffer_activate_vbi(btv, NULL);
4905         bttv_set_dma(btv, 0);
4906         btwrite(0, BT848_INT_MASK);
4907         spin_unlock_irqrestore(&btv->s_lock,flags);
4908
4909         /* save bt878 state */
4910         btv->state.gpio_enable = btread(BT848_GPIO_OUT_EN);
4911         btv->state.gpio_data   = gpio_read();
4912
4913         /* save pci state */
4914         pci_save_state(pci_dev);
4915         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
4916                 pci_disable_device(pci_dev);
4917                 btv->state.disabled = 1;
4918         }
4919         return 0;
4920 }
4921
4922 static int bttv_resume(struct pci_dev *pci_dev)
4923 {
4924         struct bttv *btv = pci_get_drvdata(pci_dev);
4925         unsigned long flags;
4926         int err;
4927
4928         dprintk("bttv%d: resume\n", btv->c.nr);
4929
4930         /* restore pci state */
4931         if (btv->state.disabled) {
4932                 err=pci_enable_device(pci_dev);
4933                 if (err) {
4934                         printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4935                                                                 btv->c.nr);
4936                         return err;
4937                 }
4938                 btv->state.disabled = 0;
4939         }
4940         err=pci_set_power_state(pci_dev, PCI_D0);
4941         if (err) {
4942                 pci_disable_device(pci_dev);
4943                 printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4944                                                         btv->c.nr);
4945                 btv->state.disabled = 1;
4946                 return err;
4947         }
4948
4949         pci_restore_state(pci_dev);
4950
4951         /* restore bt878 state */
4952         bttv_reinit_bt848(btv);
4953         gpio_inout(0xffffff, btv->state.gpio_enable);
4954         gpio_write(btv->state.gpio_data);
4955
4956         /* restart dma */
4957         spin_lock_irqsave(&btv->s_lock,flags);
4958         btv->curr = btv->state.video;
4959         btv->cvbi = btv->state.vbi;
4960         btv->loop_irq = btv->state.loop_irq;
4961         bttv_buffer_activate_video(btv, &btv->curr);
4962         bttv_buffer_activate_vbi(btv, btv->cvbi);
4963         bttv_set_dma(btv, 0);
4964         spin_unlock_irqrestore(&btv->s_lock,flags);
4965         return 0;
4966 }
4967 #endif
4968
4969 static struct pci_device_id bttv_pci_tbl[] = {
4970         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT848,
4971          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4972         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT849,
4973          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4974         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT878,
4975          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4976         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT879,
4977          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4978         {0,}
4979 };
4980
4981 MODULE_DEVICE_TABLE(pci, bttv_pci_tbl);
4982
4983 static struct pci_driver bttv_pci_driver = {
4984         .name     = "bttv",
4985         .id_table = bttv_pci_tbl,
4986         .probe    = bttv_probe,
4987         .remove   = __devexit_p(bttv_remove),
4988 #ifdef CONFIG_PM
4989         .suspend  = bttv_suspend,
4990         .resume   = bttv_resume,
4991 #endif
4992 };
4993
4994 static int bttv_init_module(void)
4995 {
4996         int ret;
4997
4998         bttv_num = 0;
4999
5000         printk(KERN_INFO "bttv: driver version %d.%d.%d loaded\n",
5001                (BTTV_VERSION_CODE >> 16) & 0xff,
5002                (BTTV_VERSION_CODE >> 8) & 0xff,
5003                BTTV_VERSION_CODE & 0xff);
5004 #ifdef SNAPSHOT
5005         printk(KERN_INFO "bttv: snapshot date %04d-%02d-%02d\n",
5006                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
5007 #endif
5008         if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
5009                 gbuffers = 2;
5010         if (gbufsize < 0 || gbufsize > BTTV_MAX_FBUF)
5011                 gbufsize = BTTV_MAX_FBUF;
5012         gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;
5013         if (bttv_verbose)
5014                 printk(KERN_INFO "bttv: using %d buffers with %dk (%d pages) each for capture\n",
5015                        gbuffers, gbufsize >> 10, gbufsize >> PAGE_SHIFT);
5016
5017         bttv_check_chipset();
5018
5019         ret = bus_register(&bttv_sub_bus_type);
5020         if (ret < 0) {
5021                 printk(KERN_WARNING "bttv: bus_register error: %d\n", ret);
5022                 return ret;
5023         }
5024         return pci_register_driver(&bttv_pci_driver);
5025 }
5026
5027 static void bttv_cleanup_module(void)
5028 {
5029         pci_unregister_driver(&bttv_pci_driver);
5030         bus_unregister(&bttv_sub_bus_type);
5031         return;
5032 }
5033
5034 module_init(bttv_init_module);
5035 module_exit(bttv_cleanup_module);
5036
5037 /*
5038  * Local variables:
5039  * c-basic-offset: 8
5040  * End:
5041  */