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->flags & FORMAT_FLAGS_RAW) {
2885                         /* VIDIOCMCAPTURE uses gbufsize, not RAW_BPL *
2886                            RAW_LINES * 2. F1 is stored at offset 0, F2
2887                            at buffer size / 2. */
2888                         fh->width = RAW_BPL;
2889                         fh->height = gbufsize / RAW_BPL;
2890                         btv->init.width  = RAW_BPL;
2891                         btv->init.height = gbufsize / RAW_BPL;
2892                 }
2893                 fh->ovfmt   = fmt;
2894                 fh->fmt     = fmt;
2895                 btv->init.ovfmt   = fmt;
2896                 btv->init.fmt     = fmt;
2897                 if (bigendian) {
2898                         /* dirty hack time:  swap bytes for overlay if the
2899                            display adaptor is big endian (insmod option) */
2900                         if (fmt->palette == VIDEO_PALETTE_RGB555 ||
2901                             fmt->palette == VIDEO_PALETTE_RGB565 ||
2902                             fmt->palette == VIDEO_PALETTE_RGB32) {
2903                                 fh->ovfmt = fmt+1;
2904                         }
2905                 }
2906                 bt848_bright(btv,pic->brightness);
2907                 bt848_contrast(btv,pic->contrast);
2908                 bt848_hue(btv,pic->hue);
2909                 bt848_sat(btv,pic->colour);
2910                 mutex_unlock(&fh->cap.lock);
2911                 return 0;
2912         }
2913
2914         case VIDIOCGWIN:
2915         {
2916                 struct video_window *win = arg;
2917
2918                 memset(win,0,sizeof(*win));
2919                 win->x      = fh->ov.w.left;
2920                 win->y      = fh->ov.w.top;
2921                 win->width  = fh->ov.w.width;
2922                 win->height = fh->ov.w.height;
2923                 return 0;
2924         }
2925         case VIDIOCSWIN:
2926         {
2927                 struct video_window *win = arg;
2928                 struct v4l2_window w2;
2929
2930                 if (no_overlay > 0) {
2931                         printk ("VIDIOCSWIN: no_overlay\n");
2932                         return -EINVAL;
2933                 }
2934
2935                 w2.field = V4L2_FIELD_ANY;
2936                 w2.w.left    = win->x;
2937                 w2.w.top     = win->y;
2938                 w2.w.width   = win->width;
2939                 w2.w.height  = win->height;
2940                 w2.clipcount = win->clipcount;
2941                 w2.clips     = (struct v4l2_clip __user *)win->clips;
2942                 retval = setup_window(fh, btv, &w2, 0);
2943                 if (0 == retval) {
2944                         /* on v4l1 this ioctl affects the read() size too */
2945                         fh->width  = fh->ov.w.width;
2946                         fh->height = fh->ov.w.height;
2947                         btv->init.width  = fh->ov.w.width;
2948                         btv->init.height = fh->ov.w.height;
2949                 }
2950                 return retval;
2951         }
2952
2953         case VIDIOCGFBUF:
2954         {
2955                 struct video_buffer *fbuf = arg;
2956
2957                 fbuf->base          = btv->fbuf.base;
2958                 fbuf->width         = btv->fbuf.fmt.width;
2959                 fbuf->height        = btv->fbuf.fmt.height;
2960                 fbuf->bytesperline  = btv->fbuf.fmt.bytesperline;
2961                 if (fh->ovfmt)
2962                         fbuf->depth = fh->ovfmt->depth;
2963                 else {
2964                         if (fbuf->width)
2965                                 fbuf->depth   = ((fbuf->bytesperline<<3)
2966                                                   + (fbuf->width-1) )
2967                                                   /fbuf->width;
2968                         else
2969                                 fbuf->depth = 0;
2970                 }
2971                 return 0;
2972         }
2973         case VIDIOCSFBUF:
2974         {
2975                 struct video_buffer *fbuf = arg;
2976                 const struct bttv_format *fmt;
2977                 unsigned long end;
2978
2979                 if(!capable(CAP_SYS_ADMIN) &&
2980                    !capable(CAP_SYS_RAWIO))
2981                         return -EPERM;
2982                 end = (unsigned long)fbuf->base +
2983                         fbuf->height * fbuf->bytesperline;
2984                 mutex_lock(&fh->cap.lock);
2985                 retval = -EINVAL;
2986
2987                 switch (fbuf->depth) {
2988                 case 8:
2989                         fmt = format_by_palette(VIDEO_PALETTE_HI240);
2990                         break;
2991                 case 16:
2992                         fmt = format_by_palette(VIDEO_PALETTE_RGB565);
2993                         break;
2994                 case 24:
2995                         fmt = format_by_palette(VIDEO_PALETTE_RGB24);
2996                         break;
2997                 case 32:
2998                         fmt = format_by_palette(VIDEO_PALETTE_RGB32);
2999                         break;
3000                 case 15:
3001                         fbuf->depth = 16;
3002                         fmt = format_by_palette(VIDEO_PALETTE_RGB555);
3003                         break;
3004                 default:
3005                         fmt = NULL;
3006                         break;
3007                 }
3008                 if (NULL == fmt)
3009                         goto fh_unlock_and_return;
3010
3011                 fh->ovfmt = fmt;
3012                 fh->fmt   = fmt;
3013                 btv->init.ovfmt = fmt;
3014                 btv->init.fmt   = fmt;
3015                 btv->fbuf.base             = fbuf->base;
3016                 btv->fbuf.fmt.width        = fbuf->width;
3017                 btv->fbuf.fmt.height       = fbuf->height;
3018                 if (fbuf->bytesperline)
3019                         btv->fbuf.fmt.bytesperline = fbuf->bytesperline;
3020                 else
3021                         btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fbuf->depth/8;
3022                 mutex_unlock(&fh->cap.lock);
3023                 return 0;
3024         }
3025
3026         case VIDIOCCAPTURE:
3027         case VIDIOC_OVERLAY:
3028         {
3029                 struct bttv_buffer *new;
3030                 int *on = arg;
3031
3032                 if (*on) {
3033                         /* verify args */
3034                         if (NULL == btv->fbuf.base)
3035                                 return -EINVAL;
3036                         if (!fh->ov.setup_ok) {
3037                                 dprintk("bttv%d: overlay: !setup_ok\n",btv->c.nr);
3038                                 return -EINVAL;
3039                         }
3040                 }
3041
3042                 if (!check_alloc_btres(btv,fh,RESOURCE_OVERLAY))
3043                         return -EBUSY;
3044
3045                 mutex_lock(&fh->cap.lock);
3046                 if (*on) {
3047                         fh->ov.tvnorm = btv->tvnorm;
3048                         new = videobuf_pci_alloc(sizeof(*new));
3049                         new->crop = btv->crop[!!fh->do_crop].rect;
3050                         bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
3051                 } else {
3052                         new = NULL;
3053                 }
3054
3055                 /* switch over */
3056                 retval = bttv_switch_overlay(btv,fh,new);
3057                 mutex_unlock(&fh->cap.lock);
3058                 return retval;
3059         }
3060
3061         case VIDIOCGMBUF:
3062         {
3063                 struct video_mbuf *mbuf = arg;
3064                 unsigned int i;
3065
3066                 mutex_lock(&fh->cap.lock);
3067                 retval = videobuf_mmap_setup(&fh->cap,gbuffers,gbufsize,
3068                                              V4L2_MEMORY_MMAP);
3069                 if (retval < 0)
3070                         goto fh_unlock_and_return;
3071
3072                 gbuffers = retval;
3073                 memset(mbuf,0,sizeof(*mbuf));
3074                 mbuf->frames = gbuffers;
3075                 mbuf->size   = gbuffers * gbufsize;
3076                 for (i = 0; i < gbuffers; i++)
3077                         mbuf->offsets[i] = i * gbufsize;
3078                 mutex_unlock(&fh->cap.lock);
3079                 return 0;
3080         }
3081         case VIDIOCMCAPTURE:
3082         {
3083                 struct video_mmap *vm = arg;
3084                 struct bttv_buffer *buf;
3085                 enum v4l2_field field;
3086                 __s32 height2;
3087                 int res;
3088
3089                 if (vm->frame >= VIDEO_MAX_FRAME)
3090                         return -EINVAL;
3091
3092                 res = bttv_resource(fh);
3093                 if (!check_alloc_btres(btv, fh, res))
3094                         return -EBUSY;
3095
3096                 mutex_lock(&fh->cap.lock);
3097                 retval = -EINVAL;
3098                 buf = (struct bttv_buffer *)fh->cap.bufs[vm->frame];
3099                 if (NULL == buf)
3100                         goto fh_unlock_and_return;
3101                 if (0 == buf->vb.baddr)
3102                         goto fh_unlock_and_return;
3103                 if (buf->vb.state == STATE_QUEUED ||
3104                     buf->vb.state == STATE_ACTIVE)
3105                         goto fh_unlock_and_return;
3106
3107                 height2 = btv->crop[!!fh->do_crop].rect.height >> 1;
3108                 field = (vm->height > height2)
3109                         ? V4L2_FIELD_INTERLACED
3110                         : V4L2_FIELD_BOTTOM;
3111                 retval = bttv_prepare_buffer(&fh->cap,btv,buf,
3112                                              format_by_palette(vm->format),
3113                                              vm->width,vm->height,field);
3114                 if (0 != retval)
3115                         goto fh_unlock_and_return;
3116                 spin_lock_irqsave(&btv->s_lock,flags);
3117                 buffer_queue(&fh->cap,&buf->vb);
3118                 spin_unlock_irqrestore(&btv->s_lock,flags);
3119                 mutex_unlock(&fh->cap.lock);
3120                 return 0;
3121         }
3122         case VIDIOCSYNC:
3123         {
3124                 int *frame = arg;
3125                 struct bttv_buffer *buf;
3126
3127                 if (*frame >= VIDEO_MAX_FRAME)
3128                         return -EINVAL;
3129
3130                 mutex_lock(&fh->cap.lock);
3131                 retval = -EINVAL;
3132                 buf = (struct bttv_buffer *)fh->cap.bufs[*frame];
3133                 if (NULL == buf)
3134                         goto fh_unlock_and_return;
3135                 retval = videobuf_waiton(&buf->vb,0,1);
3136                 if (0 != retval)
3137                         goto fh_unlock_and_return;
3138                 switch (buf->vb.state) {
3139                 case STATE_ERROR:
3140                         retval = -EIO;
3141                         /* fall through */
3142                 case STATE_DONE:
3143                 {
3144                         struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
3145                         videobuf_dma_sync(&fh->cap,dma);
3146                         bttv_dma_free(&fh->cap,btv,buf);
3147                         break;
3148                 }
3149                 default:
3150                         retval = -EINVAL;
3151                         break;
3152                 }
3153                 mutex_unlock(&fh->cap.lock);
3154                 return retval;
3155         }
3156
3157         case VIDIOCGVBIFMT:
3158                 if (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE) {
3159                         retval = bttv_switch_type(fh,V4L2_BUF_TYPE_VBI_CAPTURE);
3160                         if (0 != retval)
3161                                 return retval;
3162                 }
3163
3164                 /* fall through */
3165
3166         case VIDIOCSVBIFMT:
3167                 return v4l_compat_translate_ioctl(inode, file, cmd,
3168                                                   arg, bttv_do_ioctl);
3169
3170         case BTTV_VERSION:
3171         case VIDIOCGFREQ:
3172         case VIDIOCSFREQ:
3173         case VIDIOCGTUNER:
3174         case VIDIOCSTUNER:
3175         case VIDIOCGCHAN:
3176         case VIDIOCSCHAN:
3177         case VIDIOCGAUDIO:
3178         case VIDIOCSAUDIO:
3179                 return bttv_common_ioctls(btv,cmd,arg);
3180
3181         /* ***  v4l2  *** ************************************************ */
3182         case VIDIOC_QUERYCAP:
3183         {
3184                 struct v4l2_capability *cap = arg;
3185
3186                 if (0 == v4l2)
3187                         return -EINVAL;
3188                 memset(cap, 0, sizeof (*cap));
3189                 strlcpy(cap->driver, "bttv", sizeof (cap->driver));
3190                 strlcpy(cap->card, btv->video_dev->name, sizeof (cap->card));
3191                 snprintf(cap->bus_info, sizeof (cap->bus_info),
3192                          "PCI:%s", pci_name(btv->c.pci));
3193                 cap->version = BTTV_VERSION_CODE;
3194                 cap->capabilities =
3195                         V4L2_CAP_VIDEO_CAPTURE |
3196                         V4L2_CAP_VBI_CAPTURE |
3197                         V4L2_CAP_READWRITE |
3198                         V4L2_CAP_STREAMING;
3199                 if (no_overlay <= 0)
3200                         cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY;
3201
3202                 if (bttv_tvcards[btv->c.type].tuner != UNSET &&
3203                     bttv_tvcards[btv->c.type].tuner != TUNER_ABSENT)
3204                         cap->capabilities |= V4L2_CAP_TUNER;
3205                 return 0;
3206         }
3207
3208         case VIDIOC_ENUM_FMT:
3209         {
3210                 struct v4l2_fmtdesc *f = arg;
3211                 enum v4l2_buf_type type;
3212                 unsigned int i;
3213                 int index;
3214
3215                 type  = f->type;
3216                 if (V4L2_BUF_TYPE_VBI_CAPTURE == type) {
3217                         /* vbi */
3218                         index = f->index;
3219                         if (0 != index)
3220                                 return -EINVAL;
3221                         memset(f,0,sizeof(*f));
3222                         f->index       = index;
3223                         f->type        = type;
3224                         f->pixelformat = V4L2_PIX_FMT_GREY;
3225                         strcpy(f->description,"vbi data");
3226                         return 0;
3227                 }
3228
3229                 /* video capture + overlay */
3230                 index = -1;
3231                 for (i = 0; i < BTTV_FORMATS; i++) {
3232                         if (bttv_formats[i].fourcc != -1)
3233                                 index++;
3234                         if ((unsigned int)index == f->index)
3235                                 break;
3236                 }
3237                 if (BTTV_FORMATS == i)
3238                         return -EINVAL;
3239
3240                 switch (f->type) {
3241                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3242                         break;
3243                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3244                         if (!(bttv_formats[i].flags & FORMAT_FLAGS_PACKED))
3245                                 return -EINVAL;
3246                         break;
3247                 default:
3248                         return -EINVAL;
3249                 }
3250                 memset(f,0,sizeof(*f));
3251                 f->index       = index;
3252                 f->type        = type;
3253                 f->pixelformat = bttv_formats[i].fourcc;
3254                 strlcpy(f->description,bttv_formats[i].name,sizeof(f->description));
3255                 return 0;
3256         }
3257
3258         case VIDIOC_TRY_FMT:
3259         {
3260                 struct v4l2_format *f = arg;
3261                 return bttv_try_fmt(fh,btv,f, /* adjust_crop */ 0);
3262         }
3263         case VIDIOC_G_FMT:
3264         {
3265                 struct v4l2_format *f = arg;
3266                 return bttv_g_fmt(fh,f);
3267         }
3268         case VIDIOC_S_FMT:
3269         {
3270                 struct v4l2_format *f = arg;
3271                 return bttv_s_fmt(fh,btv,f);
3272         }
3273
3274         case VIDIOC_G_FBUF:
3275         {
3276                 struct v4l2_framebuffer *fb = arg;
3277
3278                 *fb = btv->fbuf;
3279                 fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
3280                 if (fh->ovfmt)
3281                         fb->fmt.pixelformat  = fh->ovfmt->fourcc;
3282                 return 0;
3283         }
3284         case VIDIOC_S_FBUF:
3285         {
3286                 struct v4l2_framebuffer *fb = arg;
3287                 const struct bttv_format *fmt;
3288
3289                 if(!capable(CAP_SYS_ADMIN) &&
3290                    !capable(CAP_SYS_RAWIO))
3291                         return -EPERM;
3292
3293                 /* check args */
3294                 fmt = format_by_fourcc(fb->fmt.pixelformat);
3295                 if (NULL == fmt)
3296                         return -EINVAL;
3297                 if (0 == (fmt->flags & FORMAT_FLAGS_PACKED))
3298                         return -EINVAL;
3299
3300                 retval = -EINVAL;
3301                 if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
3302                         __s32 width = fb->fmt.width;
3303                         __s32 height = fb->fmt.height;
3304
3305                         retval = limit_scaled_size(fh, &width, &height,
3306                                                    V4L2_FIELD_INTERLACED,
3307                                                    /* width_mask */ ~3,
3308                                                    /* width_bias */ 2,
3309                                                    /* adjust_size */ 0,
3310                                                    /* adjust_crop */ 0);
3311                         if (0 != retval)
3312                                 return retval;
3313                 }
3314
3315                 /* ok, accept it */
3316                 mutex_lock(&fh->cap.lock);
3317                 btv->fbuf.base       = fb->base;
3318                 btv->fbuf.fmt.width  = fb->fmt.width;
3319                 btv->fbuf.fmt.height = fb->fmt.height;
3320                 if (0 != fb->fmt.bytesperline)
3321                         btv->fbuf.fmt.bytesperline = fb->fmt.bytesperline;
3322                 else
3323                         btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fmt->depth/8;
3324
3325                 retval = 0;
3326                 fh->ovfmt = fmt;
3327                 btv->init.ovfmt = fmt;
3328                 if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
3329                         fh->ov.w.left   = 0;
3330                         fh->ov.w.top    = 0;
3331                         fh->ov.w.width  = fb->fmt.width;
3332                         fh->ov.w.height = fb->fmt.height;
3333                         btv->init.ov.w.width  = fb->fmt.width;
3334                         btv->init.ov.w.height = fb->fmt.height;
3335                                 kfree(fh->ov.clips);
3336                         fh->ov.clips = NULL;
3337                         fh->ov.nclips = 0;
3338
3339                         if (check_btres(fh, RESOURCE_OVERLAY)) {
3340                                 struct bttv_buffer *new;
3341
3342                                 new = videobuf_pci_alloc(sizeof(*new));
3343                                 new->crop = btv->crop[!!fh->do_crop].rect;
3344                                 bttv_overlay_risc(btv,&fh->ov,fh->ovfmt,new);
3345                                 retval = bttv_switch_overlay(btv,fh,new);
3346                         }
3347                 }
3348                 mutex_unlock(&fh->cap.lock);
3349                 return retval;
3350         }
3351
3352         case VIDIOC_REQBUFS:
3353                 return videobuf_reqbufs(bttv_queue(fh),arg);
3354
3355         case VIDIOC_QUERYBUF:
3356                 return videobuf_querybuf(bttv_queue(fh),arg);
3357
3358         case VIDIOC_QBUF:
3359         {
3360                 int res = bttv_resource(fh);
3361
3362                 if (!check_alloc_btres(btv, fh, res))
3363                         return -EBUSY;
3364                 return videobuf_qbuf(bttv_queue(fh),arg);
3365         }
3366
3367         case VIDIOC_DQBUF:
3368                 return videobuf_dqbuf(bttv_queue(fh),arg,
3369                                       file->f_flags & O_NONBLOCK);
3370
3371         case VIDIOC_STREAMON:
3372         {
3373                 int res = bttv_resource(fh);
3374
3375                 if (!check_alloc_btres(btv,fh,res))
3376                         return -EBUSY;
3377                 return videobuf_streamon(bttv_queue(fh));
3378         }
3379         case VIDIOC_STREAMOFF:
3380         {
3381                 int res = bttv_resource(fh);
3382
3383                 retval = videobuf_streamoff(bttv_queue(fh));
3384                 if (retval < 0)
3385                         return retval;
3386                 free_btres(btv,fh,res);
3387                 return 0;
3388         }
3389
3390         case VIDIOC_QUERYCTRL:
3391         {
3392                 struct v4l2_queryctrl *c = arg;
3393                 int i;
3394
3395                 if ((c->id <  V4L2_CID_BASE ||
3396                      c->id >= V4L2_CID_LASTP1) &&
3397                     (c->id <  V4L2_CID_PRIVATE_BASE ||
3398                      c->id >= V4L2_CID_PRIVATE_LASTP1))
3399                         return -EINVAL;
3400                 for (i = 0; i < BTTV_CTLS; i++)
3401                         if (bttv_ctls[i].id == c->id)
3402                                 break;
3403                 if (i == BTTV_CTLS) {
3404                         *c = no_ctl;
3405                         return 0;
3406                 }
3407                 *c = bttv_ctls[i];
3408                 if (btv->audio_hook && i >= 4 && i <= 8) {
3409                         struct video_audio va;
3410                         memset(&va,0,sizeof(va));
3411                         btv->audio_hook(btv,&va,0);
3412                         switch (bttv_ctls[i].id) {
3413                         case V4L2_CID_AUDIO_VOLUME:
3414                                 if (!(va.flags & VIDEO_AUDIO_VOLUME))
3415                                         *c = no_ctl;
3416                                 break;
3417                         case V4L2_CID_AUDIO_BALANCE:
3418                                 if (!(va.flags & VIDEO_AUDIO_BALANCE))
3419                                         *c = no_ctl;
3420                                 break;
3421                         case V4L2_CID_AUDIO_BASS:
3422                                 if (!(va.flags & VIDEO_AUDIO_BASS))
3423                                         *c = no_ctl;
3424                                 break;
3425                         case V4L2_CID_AUDIO_TREBLE:
3426                                 if (!(va.flags & VIDEO_AUDIO_TREBLE))
3427                                         *c = no_ctl;
3428                                 break;
3429                         }
3430                 }
3431                 return 0;
3432         }
3433         case VIDIOC_G_CTRL:
3434                 return get_control(btv,arg);
3435         case VIDIOC_S_CTRL:
3436                 return set_control(btv,arg);
3437         case VIDIOC_G_PARM:
3438         {
3439                 struct v4l2_streamparm *parm = arg;
3440                 struct v4l2_standard s;
3441                 if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
3442                         return -EINVAL;
3443                 memset(parm,0,sizeof(*parm));
3444                 v4l2_video_std_construct(&s, bttv_tvnorms[btv->tvnorm].v4l2_id,
3445                                          bttv_tvnorms[btv->tvnorm].name);
3446                 parm->parm.capture.timeperframe = s.frameperiod;
3447                 return 0;
3448         }
3449
3450         case VIDIOC_G_PRIORITY:
3451         {
3452                 enum v4l2_priority *p = arg;
3453
3454                 *p = v4l2_prio_max(&btv->prio);
3455                 return 0;
3456         }
3457         case VIDIOC_S_PRIORITY:
3458         {
3459                 enum v4l2_priority *prio = arg;
3460
3461                 return v4l2_prio_change(&btv->prio, &fh->prio, *prio);
3462         }
3463
3464         case VIDIOC_CROPCAP:
3465         {
3466                 struct v4l2_cropcap *cap = arg;
3467                 enum v4l2_buf_type type;
3468
3469                 type = cap->type;
3470
3471                 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3472                     type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3473                         return -EINVAL;
3474
3475                 *cap = bttv_tvnorms[btv->tvnorm].cropcap;
3476                 cap->type = type;
3477
3478                 return 0;
3479         }
3480         case VIDIOC_G_CROP:
3481         {
3482                 struct v4l2_crop * crop = arg;
3483
3484                 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3485                     crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3486                         return -EINVAL;
3487
3488                 /* No fh->do_crop = 1; because btv->crop[1] may be
3489                    inconsistent with fh->width or fh->height and apps
3490                    do not expect a change here. */
3491
3492                 crop->c = btv->crop[!!fh->do_crop].rect;
3493
3494                 return 0;
3495         }
3496         case VIDIOC_S_CROP:
3497         {
3498                 struct v4l2_crop *crop = arg;
3499                 const struct v4l2_rect *b;
3500                 struct bttv_crop c;
3501                 __s32 b_left;
3502                 __s32 b_top;
3503                 __s32 b_right;
3504                 __s32 b_bottom;
3505
3506                 if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3507                     crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3508                         return -EINVAL;
3509
3510                 retval = v4l2_prio_check(&btv->prio,&fh->prio);
3511                 if (0 != retval)
3512                         return retval;
3513
3514                 /* Make sure tvnorm, vbi_end and the current cropping
3515                    parameters remain consistent until we're done. Note
3516                    read() may change vbi_end in check_alloc_btres(). */
3517                 mutex_lock(&btv->lock);
3518
3519                 retval = -EBUSY;
3520
3521                 if (locked_btres(fh->btv, VIDEO_RESOURCES))
3522                         goto btv_unlock_and_return;
3523
3524                 b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
3525
3526                 b_left = b->left;
3527                 b_right = b_left + b->width;
3528                 b_bottom = b->top + b->height;
3529
3530                 b_top = max(b->top, btv->vbi_end);
3531                 if (b_top + 32 >= b_bottom)
3532                         goto btv_unlock_and_return;
3533
3534                 /* Min. scaled size 48 x 32. */
3535                 c.rect.left = clamp(crop->c.left, b_left, b_right - 48);
3536                 c.rect.left = min(c.rect.left, (__s32) MAX_HDELAY);
3537
3538                 c.rect.width = clamp(crop->c.width,
3539                                      48, b_right - c.rect.left);
3540
3541                 c.rect.top = clamp(crop->c.top, b_top, b_bottom - 32);
3542                 /* Top and height must be a multiple of two. */
3543                 c.rect.top = (c.rect.top + 1) & ~1;
3544
3545                 c.rect.height = clamp(crop->c.height,
3546                                       32, b_bottom - c.rect.top);
3547                 c.rect.height = (c.rect.height + 1) & ~1;
3548
3549                 bttv_crop_calc_limits(&c);
3550
3551                 btv->crop[1] = c;
3552
3553                 mutex_unlock(&btv->lock);
3554
3555                 fh->do_crop = 1;
3556
3557                 mutex_lock(&fh->cap.lock);
3558
3559                 if (fh->width < c.min_scaled_width) {
3560                         fh->width = c.min_scaled_width;
3561                         btv->init.width = c.min_scaled_width;
3562                 } else if (fh->width > c.max_scaled_width) {
3563                         fh->width = c.max_scaled_width;
3564                         btv->init.width = c.max_scaled_width;
3565                 }
3566
3567                 if (fh->height < c.min_scaled_height) {
3568                         fh->height = c.min_scaled_height;
3569                         btv->init.height = c.min_scaled_height;
3570                 } else if (fh->height > c.max_scaled_height) {
3571                         fh->height = c.max_scaled_height;
3572                         btv->init.height = c.max_scaled_height;
3573                 }
3574
3575                 mutex_unlock(&fh->cap.lock);
3576
3577                 return 0;
3578         }
3579
3580         case VIDIOC_ENUMSTD:
3581         case VIDIOC_G_STD:
3582         case VIDIOC_S_STD:
3583         case VIDIOC_ENUMINPUT:
3584         case VIDIOC_G_INPUT:
3585         case VIDIOC_S_INPUT:
3586         case VIDIOC_G_TUNER:
3587         case VIDIOC_S_TUNER:
3588         case VIDIOC_G_FREQUENCY:
3589         case VIDIOC_S_FREQUENCY:
3590         case VIDIOC_LOG_STATUS:
3591         case VIDIOC_DBG_G_REGISTER:
3592         case VIDIOC_DBG_S_REGISTER:
3593                 return bttv_common_ioctls(btv,cmd,arg);
3594
3595         default:
3596                 return -ENOIOCTLCMD;
3597         }
3598         return 0;
3599
3600  fh_unlock_and_return:
3601         mutex_unlock(&fh->cap.lock);
3602         return retval;
3603
3604  btv_unlock_and_return:
3605         mutex_unlock(&btv->lock);
3606         return retval;
3607 }
3608
3609 static int bttv_ioctl(struct inode *inode, struct file *file,
3610                       unsigned int cmd, unsigned long arg)
3611 {
3612         struct bttv_fh *fh  = file->private_data;
3613
3614         switch (cmd) {
3615         case BTTV_VBISIZE:
3616         {
3617                 const struct bttv_tvnorm *tvnorm;
3618
3619                 tvnorm = fh->vbi_fmt.tvnorm;
3620
3621                 if (fh->vbi_fmt.fmt.start[0] != tvnorm->vbistart[0] ||
3622                     fh->vbi_fmt.fmt.start[1] != tvnorm->vbistart[1] ||
3623                     fh->vbi_fmt.fmt.count[0] != fh->vbi_fmt.fmt.count[1]) {
3624                         /* BTTV_VBISIZE cannot express these parameters,
3625                            however open() resets the paramters to defaults
3626                            and apps shouldn't call BTTV_VBISIZE after
3627                            VIDIOC_S_FMT. */
3628                         return -EINVAL;
3629                 }
3630
3631                 bttv_switch_type(fh,V4L2_BUF_TYPE_VBI_CAPTURE);
3632                 return (fh->vbi_fmt.fmt.count[0] * 2
3633                         * fh->vbi_fmt.fmt.samples_per_line);
3634         }
3635
3636         default:
3637                 return video_usercopy(inode, file, cmd, arg, bttv_do_ioctl);
3638         }
3639 }
3640
3641 static ssize_t bttv_read(struct file *file, char __user *data,
3642                          size_t count, loff_t *ppos)
3643 {
3644         struct bttv_fh *fh = file->private_data;
3645         int retval = 0;
3646
3647         if (fh->btv->errors)
3648                 bttv_reinit_bt848(fh->btv);
3649         dprintk("bttv%d: read count=%d type=%s\n",
3650                 fh->btv->c.nr,(int)count,v4l2_type_names[fh->type]);
3651
3652         switch (fh->type) {
3653         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3654                 if (!check_alloc_btres(fh->btv, fh, RESOURCE_VIDEO_READ)) {
3655                         /* VIDEO_READ in use by another fh,
3656                            or VIDEO_STREAM by any fh. */
3657                         return -EBUSY;
3658                 }
3659                 retval = videobuf_read_one(&fh->cap, data, count, ppos,
3660                                            file->f_flags & O_NONBLOCK);
3661                 free_btres(fh->btv, fh, RESOURCE_VIDEO_READ);
3662                 break;
3663         case V4L2_BUF_TYPE_VBI_CAPTURE:
3664                 if (!check_alloc_btres(fh->btv,fh,RESOURCE_VBI))
3665                         return -EBUSY;
3666                 retval = videobuf_read_stream(&fh->vbi, data, count, ppos, 1,
3667                                               file->f_flags & O_NONBLOCK);
3668                 break;
3669         default:
3670                 BUG();
3671         }
3672         return retval;
3673 }
3674
3675 static unsigned int bttv_poll(struct file *file, poll_table *wait)
3676 {
3677         struct bttv_fh *fh = file->private_data;
3678         struct bttv_buffer *buf;
3679         enum v4l2_field field;
3680
3681         if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
3682                 if (!check_alloc_btres(fh->btv,fh,RESOURCE_VBI))
3683                         return POLLERR;
3684                 return videobuf_poll_stream(file, &fh->vbi, wait);
3685         }
3686
3687         if (check_btres(fh,RESOURCE_VIDEO_STREAM)) {
3688                 /* streaming capture */
3689                 if (list_empty(&fh->cap.stream))
3690                         return POLLERR;
3691                 buf = list_entry(fh->cap.stream.next,struct bttv_buffer,vb.stream);
3692         } else {
3693                 /* read() capture */
3694                 mutex_lock(&fh->cap.lock);
3695                 if (NULL == fh->cap.read_buf) {
3696                         /* need to capture a new frame */
3697                         if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM)) {
3698                                 mutex_unlock(&fh->cap.lock);
3699                                 return POLLERR;
3700                         }
3701                         fh->cap.read_buf = videobuf_pci_alloc(fh->cap.msize);
3702                         if (NULL == fh->cap.read_buf) {
3703                                 mutex_unlock(&fh->cap.lock);
3704                                 return POLLERR;
3705                         }
3706                         fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR;
3707                         field = videobuf_next_field(&fh->cap);
3708                         if (0 != fh->cap.ops->buf_prepare(&fh->cap,fh->cap.read_buf,field)) {
3709                                 kfree (fh->cap.read_buf);
3710                                 fh->cap.read_buf = NULL;
3711                                 mutex_unlock(&fh->cap.lock);
3712                                 return POLLERR;
3713                         }
3714                         fh->cap.ops->buf_queue(&fh->cap,fh->cap.read_buf);
3715                         fh->cap.read_off = 0;
3716                 }
3717                 mutex_unlock(&fh->cap.lock);
3718                 buf = (struct bttv_buffer*)fh->cap.read_buf;
3719         }
3720
3721         poll_wait(file, &buf->vb.done, wait);
3722         if (buf->vb.state == STATE_DONE ||
3723             buf->vb.state == STATE_ERROR)
3724                 return POLLIN|POLLRDNORM;
3725         return 0;
3726 }
3727
3728 static int bttv_open(struct inode *inode, struct file *file)
3729 {
3730         int minor = iminor(inode);
3731         struct bttv *btv = NULL;
3732         struct bttv_fh *fh;
3733         enum v4l2_buf_type type = 0;
3734         unsigned int i;
3735
3736         dprintk(KERN_DEBUG "bttv: open minor=%d\n",minor);
3737
3738         for (i = 0; i < bttv_num; i++) {
3739                 if (bttvs[i].video_dev &&
3740                     bttvs[i].video_dev->minor == minor) {
3741                         btv = &bttvs[i];
3742                         type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
3743                         break;
3744                 }
3745                 if (bttvs[i].vbi_dev &&
3746                     bttvs[i].vbi_dev->minor == minor) {
3747                         btv = &bttvs[i];
3748                         type = V4L2_BUF_TYPE_VBI_CAPTURE;
3749                         break;
3750                 }
3751         }
3752         if (NULL == btv)
3753                 return -ENODEV;
3754
3755         dprintk(KERN_DEBUG "bttv%d: open called (type=%s)\n",
3756                 btv->c.nr,v4l2_type_names[type]);
3757
3758         /* allocate per filehandle data */
3759         fh = kmalloc(sizeof(*fh),GFP_KERNEL);
3760         if (NULL == fh)
3761                 return -ENOMEM;
3762         file->private_data = fh;
3763         *fh = btv->init;
3764         fh->type = type;
3765         fh->ov.setup_ok = 0;
3766         v4l2_prio_open(&btv->prio,&fh->prio);
3767
3768         videobuf_queue_pci_init(&fh->cap, &bttv_video_qops,
3769                             btv->c.pci, &btv->s_lock,
3770                             V4L2_BUF_TYPE_VIDEO_CAPTURE,
3771                             V4L2_FIELD_INTERLACED,
3772                             sizeof(struct bttv_buffer),
3773                             fh);
3774         videobuf_queue_pci_init(&fh->vbi, &bttv_vbi_qops,
3775                             btv->c.pci, &btv->s_lock,
3776                             V4L2_BUF_TYPE_VBI_CAPTURE,
3777                             V4L2_FIELD_SEQ_TB,
3778                             sizeof(struct bttv_buffer),
3779                             fh);
3780         i2c_vidiocschan(btv);
3781
3782         btv->users++;
3783
3784         /* The V4L2 spec requires one global set of cropping parameters
3785            which only change on request. These are stored in btv->crop[1].
3786            However for compatibility with V4L apps and cropping unaware
3787            V4L2 apps we now reset the cropping parameters as seen through
3788            this fh, which is to say VIDIOC_G_CROP and scaling limit checks
3789            will use btv->crop[0], the default cropping parameters for the
3790            current video standard, and VIDIOC_S_FMT will not implicitely
3791            change the cropping parameters until VIDIOC_S_CROP has been
3792            called. */
3793         fh->do_crop = !reset_crop; /* module parameter */
3794
3795         /* Likewise there should be one global set of VBI capture
3796            parameters, but for compatibility with V4L apps and earlier
3797            driver versions each fh has its own parameters. */
3798         bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm);
3799
3800         bttv_field_count(btv);
3801         return 0;
3802 }
3803
3804 static int bttv_release(struct inode *inode, struct file *file)
3805 {
3806         struct bttv_fh *fh = file->private_data;
3807         struct bttv *btv = fh->btv;
3808
3809         /* turn off overlay */
3810         if (check_btres(fh, RESOURCE_OVERLAY))
3811                 bttv_switch_overlay(btv,fh,NULL);
3812
3813         /* stop video capture */
3814         if (check_btres(fh, RESOURCE_VIDEO_STREAM)) {
3815                 videobuf_streamoff(&fh->cap);
3816                 free_btres(btv,fh,RESOURCE_VIDEO_STREAM);
3817         }
3818         if (fh->cap.read_buf) {
3819                 buffer_release(&fh->cap,fh->cap.read_buf);
3820                 kfree(fh->cap.read_buf);
3821         }
3822         if (check_btres(fh, RESOURCE_VIDEO_READ)) {
3823                 free_btres(btv, fh, RESOURCE_VIDEO_READ);
3824         }
3825
3826         /* stop vbi capture */
3827         if (check_btres(fh, RESOURCE_VBI)) {
3828                 if (fh->vbi.streaming)
3829                         videobuf_streamoff(&fh->vbi);
3830                 if (fh->vbi.reading)
3831                         videobuf_read_stop(&fh->vbi);
3832                 free_btres(btv,fh,RESOURCE_VBI);
3833         }
3834
3835         /* free stuff */
3836         videobuf_mmap_free(&fh->cap);
3837         videobuf_mmap_free(&fh->vbi);
3838         v4l2_prio_close(&btv->prio,&fh->prio);
3839         file->private_data = NULL;
3840         kfree(fh);
3841
3842         btv->users--;
3843         bttv_field_count(btv);
3844         return 0;
3845 }
3846
3847 static int
3848 bttv_mmap(struct file *file, struct vm_area_struct *vma)
3849 {
3850         struct bttv_fh *fh = file->private_data;
3851
3852         dprintk("bttv%d: mmap type=%s 0x%lx+%ld\n",
3853                 fh->btv->c.nr, v4l2_type_names[fh->type],
3854                 vma->vm_start, vma->vm_end - vma->vm_start);
3855         return videobuf_mmap_mapper(bttv_queue(fh),vma);
3856 }
3857
3858 static const struct file_operations bttv_fops =
3859 {
3860         .owner    = THIS_MODULE,
3861         .open     = bttv_open,
3862         .release  = bttv_release,
3863         .ioctl    = bttv_ioctl,
3864         .compat_ioctl   = v4l_compat_ioctl32,
3865         .llseek   = no_llseek,
3866         .read     = bttv_read,
3867         .mmap     = bttv_mmap,
3868         .poll     = bttv_poll,
3869 };
3870
3871 static struct video_device bttv_video_template =
3872 {
3873         .name     = "UNSET",
3874         .type     = VID_TYPE_CAPTURE|VID_TYPE_TUNER|
3875                     VID_TYPE_CLIPPING|VID_TYPE_SCALES,
3876         .fops     = &bttv_fops,
3877         .minor    = -1,
3878 };
3879
3880 static struct video_device bttv_vbi_template =
3881 {
3882         .name     = "bt848/878 vbi",
3883         .type     = VID_TYPE_TUNER|VID_TYPE_TELETEXT,
3884         .fops     = &bttv_fops,
3885         .minor    = -1,
3886 };
3887
3888 /* ----------------------------------------------------------------------- */
3889 /* radio interface                                                         */
3890
3891 static int radio_open(struct inode *inode, struct file *file)
3892 {
3893         int minor = iminor(inode);
3894         struct bttv *btv = NULL;
3895         unsigned int i;
3896
3897         dprintk("bttv: open minor=%d\n",minor);
3898
3899         for (i = 0; i < bttv_num; i++) {
3900                 if (bttvs[i].radio_dev->minor == minor) {
3901                         btv = &bttvs[i];
3902                         break;
3903                 }
3904         }
3905         if (NULL == btv)
3906                 return -ENODEV;
3907
3908         dprintk("bttv%d: open called (radio)\n",btv->c.nr);
3909         mutex_lock(&btv->lock);
3910
3911         btv->radio_user++;
3912
3913         file->private_data = btv;
3914
3915         bttv_call_i2c_clients(btv,AUDC_SET_RADIO,NULL);
3916         audio_input(btv,TVAUDIO_INPUT_RADIO);
3917
3918         mutex_unlock(&btv->lock);
3919         return 0;
3920 }
3921
3922 static int radio_release(struct inode *inode, struct file *file)
3923 {
3924         struct bttv        *btv = file->private_data;
3925         struct rds_command cmd;
3926
3927         btv->radio_user--;
3928
3929         bttv_call_i2c_clients(btv, RDS_CMD_CLOSE, &cmd);
3930
3931         return 0;
3932 }
3933
3934 static int radio_do_ioctl(struct inode *inode, struct file *file,
3935                           unsigned int cmd, void *arg)
3936 {
3937         struct bttv    *btv = file->private_data;
3938
3939         switch (cmd) {
3940         case VIDIOCGCAP:
3941         {
3942                 struct video_capability *cap = arg;
3943
3944                 memset(cap,0,sizeof(*cap));
3945                 strcpy(cap->name,btv->radio_dev->name);
3946                 cap->type = VID_TYPE_TUNER;
3947                 cap->channels = 1;
3948                 cap->audios = 1;
3949                 return 0;
3950         }
3951
3952         case VIDIOCGTUNER:
3953         {
3954                 struct video_tuner *v = arg;
3955
3956                 if(v->tuner)
3957                         return -EINVAL;
3958                 memset(v,0,sizeof(*v));
3959                 strcpy(v->name, "Radio");
3960                 bttv_call_i2c_clients(btv,cmd,v);
3961                 return 0;
3962         }
3963         case VIDIOCSTUNER:
3964                 /* nothing to do */
3965                 return 0;
3966
3967         case BTTV_VERSION:
3968         case VIDIOCGFREQ:
3969         case VIDIOCSFREQ:
3970         case VIDIOCGAUDIO:
3971         case VIDIOCSAUDIO:
3972         case VIDIOC_LOG_STATUS:
3973         case VIDIOC_DBG_G_REGISTER:
3974         case VIDIOC_DBG_S_REGISTER:
3975                 return bttv_common_ioctls(btv,cmd,arg);
3976
3977         default:
3978                 return -ENOIOCTLCMD;
3979         }
3980         return 0;
3981 }
3982
3983 static int radio_ioctl(struct inode *inode, struct file *file,
3984                        unsigned int cmd, unsigned long arg)
3985 {
3986         return video_usercopy(inode, file, cmd, arg, radio_do_ioctl);
3987 }
3988
3989 static ssize_t radio_read(struct file *file, char __user *data,
3990                          size_t count, loff_t *ppos)
3991 {
3992         struct bttv    *btv = file->private_data;
3993         struct rds_command cmd;
3994         cmd.block_count = count/3;
3995         cmd.buffer = data;
3996         cmd.instance = file;
3997         cmd.result = -ENODEV;
3998
3999         bttv_call_i2c_clients(btv, RDS_CMD_READ, &cmd);
4000
4001         return cmd.result;
4002 }
4003
4004 static unsigned int radio_poll(struct file *file, poll_table *wait)
4005 {
4006         struct bttv    *btv = file->private_data;
4007         struct rds_command cmd;
4008         cmd.instance = file;
4009         cmd.event_list = wait;
4010         cmd.result = -ENODEV;
4011         bttv_call_i2c_clients(btv, RDS_CMD_POLL, &cmd);
4012
4013         return cmd.result;
4014 }
4015
4016 static const struct file_operations radio_fops =
4017 {
4018         .owner    = THIS_MODULE,
4019         .open     = radio_open,
4020         .read     = radio_read,
4021         .release  = radio_release,
4022         .ioctl    = radio_ioctl,
4023         .llseek   = no_llseek,
4024         .poll     = radio_poll,
4025 };
4026
4027 static struct video_device radio_template =
4028 {
4029         .name     = "bt848/878 radio",
4030         .type     = VID_TYPE_TUNER,
4031         .fops     = &radio_fops,
4032         .minor    = -1,
4033 };
4034
4035 /* ----------------------------------------------------------------------- */
4036 /* some debug code                                                         */
4037
4038 static int bttv_risc_decode(u32 risc)
4039 {
4040         static char *instr[16] = {
4041                 [ BT848_RISC_WRITE     >> 28 ] = "write",
4042                 [ BT848_RISC_SKIP      >> 28 ] = "skip",
4043                 [ BT848_RISC_WRITEC    >> 28 ] = "writec",
4044                 [ BT848_RISC_JUMP      >> 28 ] = "jump",
4045                 [ BT848_RISC_SYNC      >> 28 ] = "sync",
4046                 [ BT848_RISC_WRITE123  >> 28 ] = "write123",
4047                 [ BT848_RISC_SKIP123   >> 28 ] = "skip123",
4048                 [ BT848_RISC_WRITE1S23 >> 28 ] = "write1s23",
4049         };
4050         static int incr[16] = {
4051                 [ BT848_RISC_WRITE     >> 28 ] = 2,
4052                 [ BT848_RISC_JUMP      >> 28 ] = 2,
4053                 [ BT848_RISC_SYNC      >> 28 ] = 2,
4054                 [ BT848_RISC_WRITE123  >> 28 ] = 5,
4055                 [ BT848_RISC_SKIP123   >> 28 ] = 2,
4056                 [ BT848_RISC_WRITE1S23 >> 28 ] = 3,
4057         };
4058         static char *bits[] = {
4059                 "be0",  "be1",  "be2",  "be3/resync",
4060                 "set0", "set1", "set2", "set3",
4061                 "clr0", "clr1", "clr2", "clr3",
4062                 "irq",  "res",  "eol",  "sol",
4063         };
4064         int i;
4065
4066         printk("0x%08x [ %s", risc,
4067                instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
4068         for (i = ARRAY_SIZE(bits)-1; i >= 0; i--)
4069                 if (risc & (1 << (i + 12)))
4070                         printk(" %s",bits[i]);
4071         printk(" count=%d ]\n", risc & 0xfff);
4072         return incr[risc >> 28] ? incr[risc >> 28] : 1;
4073 }
4074
4075 static void bttv_risc_disasm(struct bttv *btv,
4076                              struct btcx_riscmem *risc)
4077 {
4078         unsigned int i,j,n;
4079
4080         printk("%s: risc disasm: %p [dma=0x%08lx]\n",
4081                btv->c.name, risc->cpu, (unsigned long)risc->dma);
4082         for (i = 0; i < (risc->size >> 2); i += n) {
4083                 printk("%s:   0x%lx: ", btv->c.name,
4084                        (unsigned long)(risc->dma + (i<<2)));
4085                 n = bttv_risc_decode(risc->cpu[i]);
4086                 for (j = 1; j < n; j++)
4087                         printk("%s:   0x%lx: 0x%08x [ arg #%d ]\n",
4088                                btv->c.name, (unsigned long)(risc->dma + ((i+j)<<2)),
4089                                risc->cpu[i+j], j);
4090                 if (0 == risc->cpu[i])
4091                         break;
4092         }
4093 }
4094
4095 static void bttv_print_riscaddr(struct bttv *btv)
4096 {
4097         printk("  main: %08Lx\n",
4098                (unsigned long long)btv->main.dma);
4099         printk("  vbi : o=%08Lx e=%08Lx\n",
4100                btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0,
4101                btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0);
4102         printk("  cap : o=%08Lx e=%08Lx\n",
4103                btv->curr.top    ? (unsigned long long)btv->curr.top->top.dma : 0,
4104                btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
4105         printk("  scr : o=%08Lx e=%08Lx\n",
4106                btv->screen ? (unsigned long long)btv->screen->top.dma : 0,
4107                btv->screen ? (unsigned long long)btv->screen->bottom.dma : 0);
4108         bttv_risc_disasm(btv, &btv->main);
4109 }
4110
4111 /* ----------------------------------------------------------------------- */
4112 /* irq handler                                                             */
4113
4114 static char *irq_name[] = {
4115         "FMTCHG",  // format change detected (525 vs. 625)
4116         "VSYNC",   // vertical sync (new field)
4117         "HSYNC",   // horizontal sync
4118         "OFLOW",   // chroma/luma AGC overflow
4119         "HLOCK",   // horizontal lock changed
4120         "VPRES",   // video presence changed
4121         "6", "7",
4122         "I2CDONE", // hw irc operation finished
4123         "GPINT",   // gpio port triggered irq
4124         "10",
4125         "RISCI",   // risc instruction triggered irq
4126         "FBUS",    // pixel data fifo dropped data (high pci bus latencies)
4127         "FTRGT",   // pixel data fifo overrun
4128         "FDSR",    // fifo data stream resyncronisation
4129         "PPERR",   // parity error (data transfer)
4130         "RIPERR",  // parity error (read risc instructions)
4131         "PABORT",  // pci abort
4132         "OCERR",   // risc instruction error
4133         "SCERR",   // syncronisation error
4134 };
4135
4136 static void bttv_print_irqbits(u32 print, u32 mark)
4137 {
4138         unsigned int i;
4139
4140         printk("bits:");
4141         for (i = 0; i < ARRAY_SIZE(irq_name); i++) {
4142                 if (print & (1 << i))
4143                         printk(" %s",irq_name[i]);
4144                 if (mark & (1 << i))
4145                         printk("*");
4146         }
4147 }
4148
4149 static void bttv_irq_debug_low_latency(struct bttv *btv, u32 rc)
4150 {
4151         printk("bttv%d: irq: skipped frame [main=%lx,o_vbi=%lx,o_field=%lx,rc=%lx]\n",
4152                btv->c.nr,
4153                (unsigned long)btv->main.dma,
4154                (unsigned long)btv->main.cpu[RISC_SLOT_O_VBI+1],
4155                (unsigned long)btv->main.cpu[RISC_SLOT_O_FIELD+1],
4156                (unsigned long)rc);
4157
4158         if (0 == (btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC)) {
4159                 printk("bttv%d: Oh, there (temporarely?) is no input signal. "
4160                        "Ok, then this is harmless, don't worry ;)\n",
4161                        btv->c.nr);
4162                 return;
4163         }
4164         printk("bttv%d: Uhm. Looks like we have unusual high IRQ latencies.\n",
4165                btv->c.nr);
4166         printk("bttv%d: Lets try to catch the culpit red-handed ...\n",
4167                btv->c.nr);
4168         dump_stack();
4169 }
4170
4171 static int
4172 bttv_irq_next_video(struct bttv *btv, struct bttv_buffer_set *set)
4173 {
4174         struct bttv_buffer *item;
4175
4176         memset(set,0,sizeof(*set));
4177
4178         /* capture request ? */
4179         if (!list_empty(&btv->capture)) {
4180                 set->frame_irq = 1;
4181                 item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
4182                 if (V4L2_FIELD_HAS_TOP(item->vb.field))
4183                         set->top    = item;
4184                 if (V4L2_FIELD_HAS_BOTTOM(item->vb.field))
4185                         set->bottom = item;
4186
4187                 /* capture request for other field ? */
4188                 if (!V4L2_FIELD_HAS_BOTH(item->vb.field) &&
4189                     (item->vb.queue.next != &btv->capture)) {
4190                         item = list_entry(item->vb.queue.next, struct bttv_buffer, vb.queue);
4191                         if (!V4L2_FIELD_HAS_BOTH(item->vb.field)) {
4192                                 if (NULL == set->top &&
4193                                     V4L2_FIELD_TOP == item->vb.field) {
4194                                         set->top = item;
4195                                 }
4196                                 if (NULL == set->bottom &&
4197                                     V4L2_FIELD_BOTTOM == item->vb.field) {
4198                                         set->bottom = item;
4199                                 }
4200                                 if (NULL != set->top  &&  NULL != set->bottom)
4201                                         set->top_irq = 2;
4202                         }
4203                 }
4204         }
4205
4206         /* screen overlay ? */
4207         if (NULL != btv->screen) {
4208                 if (V4L2_FIELD_HAS_BOTH(btv->screen->vb.field)) {
4209                         if (NULL == set->top && NULL == set->bottom) {
4210                                 set->top    = btv->screen;
4211                                 set->bottom = btv->screen;
4212                         }
4213                 } else {
4214                         if (V4L2_FIELD_TOP == btv->screen->vb.field &&
4215                             NULL == set->top) {
4216                                 set->top = btv->screen;
4217                         }
4218                         if (V4L2_FIELD_BOTTOM == btv->screen->vb.field &&
4219                             NULL == set->bottom) {
4220                                 set->bottom = btv->screen;
4221                         }
4222                 }
4223         }
4224
4225         dprintk("bttv%d: next set: top=%p bottom=%p [screen=%p,irq=%d,%d]\n",
4226                 btv->c.nr,set->top, set->bottom,
4227                 btv->screen,set->frame_irq,set->top_irq);
4228         return 0;
4229 }
4230
4231 static void
4232 bttv_irq_wakeup_video(struct bttv *btv, struct bttv_buffer_set *wakeup,
4233                       struct bttv_buffer_set *curr, unsigned int state)
4234 {
4235         struct timeval ts;
4236
4237         do_gettimeofday(&ts);
4238
4239         if (wakeup->top == wakeup->bottom) {
4240                 if (NULL != wakeup->top && curr->top != wakeup->top) {
4241                         if (irq_debug > 1)
4242                                 printk("bttv%d: wakeup: both=%p\n",btv->c.nr,wakeup->top);
4243                         wakeup->top->vb.ts = ts;
4244                         wakeup->top->vb.field_count = btv->field_count;
4245                         wakeup->top->vb.state = state;
4246                         wake_up(&wakeup->top->vb.done);
4247                 }
4248         } else {
4249                 if (NULL != wakeup->top && curr->top != wakeup->top) {
4250                         if (irq_debug > 1)
4251                                 printk("bttv%d: wakeup: top=%p\n",btv->c.nr,wakeup->top);
4252                         wakeup->top->vb.ts = ts;
4253                         wakeup->top->vb.field_count = btv->field_count;
4254                         wakeup->top->vb.state = state;
4255                         wake_up(&wakeup->top->vb.done);
4256                 }
4257                 if (NULL != wakeup->bottom && curr->bottom != wakeup->bottom) {
4258                         if (irq_debug > 1)
4259                                 printk("bttv%d: wakeup: bottom=%p\n",btv->c.nr,wakeup->bottom);
4260                         wakeup->bottom->vb.ts = ts;
4261                         wakeup->bottom->vb.field_count = btv->field_count;
4262                         wakeup->bottom->vb.state = state;
4263                         wake_up(&wakeup->bottom->vb.done);
4264                 }
4265         }
4266 }
4267
4268 static void
4269 bttv_irq_wakeup_vbi(struct bttv *btv, struct bttv_buffer *wakeup,
4270                     unsigned int state)
4271 {
4272         struct timeval ts;
4273
4274         if (NULL == wakeup)
4275                 return;
4276
4277         do_gettimeofday(&ts);
4278         wakeup->vb.ts = ts;
4279         wakeup->vb.field_count = btv->field_count;
4280         wakeup->vb.state = state;
4281         wake_up(&wakeup->vb.done);
4282 }
4283
4284 static void bttv_irq_timeout(unsigned long data)
4285 {
4286         struct bttv *btv = (struct bttv *)data;
4287         struct bttv_buffer_set old,new;
4288         struct bttv_buffer *ovbi;
4289         struct bttv_buffer *item;
4290         unsigned long flags;
4291
4292         if (bttv_verbose) {
4293                 printk(KERN_INFO "bttv%d: timeout: drop=%d irq=%d/%d, risc=%08x, ",
4294                        btv->c.nr, btv->framedrop, btv->irq_me, btv->irq_total,
4295                        btread(BT848_RISC_COUNT));
4296                 bttv_print_irqbits(btread(BT848_INT_STAT),0);
4297                 printk("\n");
4298         }
4299
4300         spin_lock_irqsave(&btv->s_lock,flags);
4301
4302         /* deactivate stuff */
4303         memset(&new,0,sizeof(new));
4304         old  = btv->curr;
4305         ovbi = btv->cvbi;
4306         btv->curr = new;
4307         btv->cvbi = NULL;
4308         btv->loop_irq = 0;
4309         bttv_buffer_activate_video(btv, &new);
4310         bttv_buffer_activate_vbi(btv,   NULL);
4311         bttv_set_dma(btv, 0);
4312
4313         /* wake up */
4314         bttv_irq_wakeup_video(btv, &old, &new, STATE_ERROR);
4315         bttv_irq_wakeup_vbi(btv, ovbi, STATE_ERROR);
4316
4317         /* cancel all outstanding capture / vbi requests */
4318         while (!list_empty(&btv->capture)) {
4319                 item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
4320                 list_del(&item->vb.queue);
4321                 item->vb.state = STATE_ERROR;
4322                 wake_up(&item->vb.done);
4323         }
4324         while (!list_empty(&btv->vcapture)) {
4325                 item = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
4326                 list_del(&item->vb.queue);
4327                 item->vb.state = STATE_ERROR;
4328                 wake_up(&item->vb.done);
4329         }
4330
4331         btv->errors++;
4332         spin_unlock_irqrestore(&btv->s_lock,flags);
4333 }
4334
4335 static void
4336 bttv_irq_wakeup_top(struct bttv *btv)
4337 {
4338         struct bttv_buffer *wakeup = btv->curr.top;
4339
4340         if (NULL == wakeup)
4341                 return;
4342
4343         spin_lock(&btv->s_lock);
4344         btv->curr.top_irq = 0;
4345         btv->curr.top = NULL;
4346         bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
4347
4348         do_gettimeofday(&wakeup->vb.ts);
4349         wakeup->vb.field_count = btv->field_count;
4350         wakeup->vb.state = STATE_DONE;
4351         wake_up(&wakeup->vb.done);
4352         spin_unlock(&btv->s_lock);
4353 }
4354
4355 static inline int is_active(struct btcx_riscmem *risc, u32 rc)
4356 {
4357         if (rc < risc->dma)
4358                 return 0;
4359         if (rc > risc->dma + risc->size)
4360                 return 0;
4361         return 1;
4362 }
4363
4364 static void
4365 bttv_irq_switch_video(struct bttv *btv)
4366 {
4367         struct bttv_buffer_set new;
4368         struct bttv_buffer_set old;
4369         dma_addr_t rc;
4370
4371         spin_lock(&btv->s_lock);
4372
4373         /* new buffer set */
4374         bttv_irq_next_video(btv, &new);
4375         rc = btread(BT848_RISC_COUNT);
4376         if ((btv->curr.top    && is_active(&btv->curr.top->top,       rc)) ||
4377             (btv->curr.bottom && is_active(&btv->curr.bottom->bottom, rc))) {
4378                 btv->framedrop++;
4379                 if (debug_latency)
4380                         bttv_irq_debug_low_latency(btv, rc);
4381                 spin_unlock(&btv->s_lock);
4382                 return;
4383         }
4384
4385         /* switch over */
4386         old = btv->curr;
4387         btv->curr = new;
4388         btv->loop_irq &= ~1;
4389         bttv_buffer_activate_video(btv, &new);
4390         bttv_set_dma(btv, 0);
4391
4392         /* switch input */
4393         if (UNSET != btv->new_input) {
4394                 video_mux(btv,btv->new_input);
4395                 btv->new_input = UNSET;
4396         }
4397
4398         /* wake up finished buffers */
4399         bttv_irq_wakeup_video(btv, &old, &new, STATE_DONE);
4400         spin_unlock(&btv->s_lock);
4401 }
4402
4403 static void
4404 bttv_irq_switch_vbi(struct bttv *btv)
4405 {
4406         struct bttv_buffer *new = NULL;
4407         struct bttv_buffer *old;
4408         u32 rc;
4409
4410         spin_lock(&btv->s_lock);
4411
4412         if (!list_empty(&btv->vcapture))
4413                 new = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
4414         old = btv->cvbi;
4415
4416         rc = btread(BT848_RISC_COUNT);
4417         if (NULL != old && (is_active(&old->top,    rc) ||
4418                             is_active(&old->bottom, rc))) {
4419                 btv->framedrop++;
4420                 if (debug_latency)
4421                         bttv_irq_debug_low_latency(btv, rc);
4422                 spin_unlock(&btv->s_lock);
4423                 return;
4424         }
4425
4426         /* switch */
4427         btv->cvbi = new;
4428         btv->loop_irq &= ~4;
4429         bttv_buffer_activate_vbi(btv, new);
4430         bttv_set_dma(btv, 0);
4431
4432         bttv_irq_wakeup_vbi(btv, old, STATE_DONE);
4433         spin_unlock(&btv->s_lock);
4434 }
4435
4436 static irqreturn_t bttv_irq(int irq, void *dev_id)
4437 {
4438         u32 stat,astat;
4439         u32 dstat;
4440         int count;
4441         struct bttv *btv;
4442         int handled = 0;
4443
4444         btv=(struct bttv *)dev_id;
4445
4446         if (btv->custom_irq)
4447                 handled = btv->custom_irq(btv);
4448
4449         count=0;
4450         while (1) {
4451                 /* get/clear interrupt status bits */
4452                 stat=btread(BT848_INT_STAT);
4453                 astat=stat&btread(BT848_INT_MASK);
4454                 if (!astat)
4455                         break;
4456                 handled = 1;
4457                 btwrite(stat,BT848_INT_STAT);
4458
4459                 /* get device status bits */
4460                 dstat=btread(BT848_DSTATUS);
4461
4462                 if (irq_debug) {
4463                         printk(KERN_DEBUG "bttv%d: irq loop=%d fc=%d "
4464                                "riscs=%x, riscc=%08x, ",
4465                                btv->c.nr, count, btv->field_count,
4466                                stat>>28, btread(BT848_RISC_COUNT));
4467                         bttv_print_irqbits(stat,astat);
4468                         if (stat & BT848_INT_HLOCK)
4469                                 printk("   HLOC => %s", (dstat & BT848_DSTATUS_HLOC)
4470                                        ? "yes" : "no");
4471                         if (stat & BT848_INT_VPRES)
4472                                 printk("   PRES => %s", (dstat & BT848_DSTATUS_PRES)
4473                                        ? "yes" : "no");
4474                         if (stat & BT848_INT_FMTCHG)
4475                                 printk("   NUML => %s", (dstat & BT848_DSTATUS_NUML)
4476                                        ? "625" : "525");
4477                         printk("\n");
4478                 }
4479
4480                 if (astat&BT848_INT_VSYNC)
4481                         btv->field_count++;
4482
4483                 if ((astat & BT848_INT_GPINT) && btv->remote) {
4484                         wake_up(&btv->gpioq);
4485                         bttv_input_irq(btv);
4486                 }
4487
4488                 if (astat & BT848_INT_I2CDONE) {
4489                         btv->i2c_done = stat;
4490                         wake_up(&btv->i2c_queue);
4491                 }
4492
4493                 if ((astat & BT848_INT_RISCI)  &&  (stat & (4<<28)))
4494                         bttv_irq_switch_vbi(btv);
4495
4496                 if ((astat & BT848_INT_RISCI)  &&  (stat & (2<<28)))
4497                         bttv_irq_wakeup_top(btv);
4498
4499                 if ((astat & BT848_INT_RISCI)  &&  (stat & (1<<28)))
4500                         bttv_irq_switch_video(btv);
4501
4502                 if ((astat & BT848_INT_HLOCK)  &&  btv->opt_automute)
4503                         audio_mute(btv, btv->mute);  /* trigger automute */
4504
4505                 if (astat & (BT848_INT_SCERR|BT848_INT_OCERR)) {
4506                         printk(KERN_INFO "bttv%d: %s%s @ %08x,",btv->c.nr,
4507                                (astat & BT848_INT_SCERR) ? "SCERR" : "",
4508                                (astat & BT848_INT_OCERR) ? "OCERR" : "",
4509                                btread(BT848_RISC_COUNT));
4510                         bttv_print_irqbits(stat,astat);
4511                         printk("\n");
4512                         if (bttv_debug)
4513                                 bttv_print_riscaddr(btv);
4514                 }
4515                 if (fdsr && astat & BT848_INT_FDSR) {
4516                         printk(KERN_INFO "bttv%d: FDSR @ %08x\n",
4517                                btv->c.nr,btread(BT848_RISC_COUNT));
4518                         if (bttv_debug)
4519                                 bttv_print_riscaddr(btv);
4520                 }
4521
4522                 count++;
4523                 if (count > 4) {
4524
4525                         if (count > 8 || !(astat & BT848_INT_GPINT)) {
4526                                 btwrite(0, BT848_INT_MASK);
4527
4528                                 printk(KERN_ERR
4529                                            "bttv%d: IRQ lockup, cleared int mask [", btv->c.nr);
4530                         } else {
4531                                 printk(KERN_ERR
4532                                            "bttv%d: IRQ lockup, clearing GPINT from int mask [", btv->c.nr);
4533
4534                                 btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT),
4535                                                 BT848_INT_MASK);
4536                         };
4537
4538                         bttv_print_irqbits(stat,astat);
4539
4540                         printk("]\n");
4541                 }
4542         }
4543         btv->irq_total++;
4544         if (handled)
4545                 btv->irq_me++;
4546         return IRQ_RETVAL(handled);
4547 }
4548
4549
4550 /* ----------------------------------------------------------------------- */
4551 /* initialitation                                                          */
4552
4553 static struct video_device *vdev_init(struct bttv *btv,
4554                                       struct video_device *template,
4555                                       char *type)
4556 {
4557         struct video_device *vfd;
4558
4559         vfd = video_device_alloc();
4560         if (NULL == vfd)
4561                 return NULL;
4562         *vfd = *template;
4563         vfd->minor   = -1;
4564         vfd->dev     = &btv->c.pci->dev;
4565         vfd->release = video_device_release;
4566         snprintf(vfd->name, sizeof(vfd->name), "BT%d%s %s (%s)",
4567                  btv->id, (btv->id==848 && btv->revision==0x12) ? "A" : "",
4568                  type, bttv_tvcards[btv->c.type].name);
4569         return vfd;
4570 }
4571
4572 static void bttv_unregister_video(struct bttv *btv)
4573 {
4574         if (btv->video_dev) {
4575                 if (-1 != btv->video_dev->minor)
4576                         video_unregister_device(btv->video_dev);
4577                 else
4578                         video_device_release(btv->video_dev);
4579                 btv->video_dev = NULL;
4580         }
4581         if (btv->vbi_dev) {
4582                 if (-1 != btv->vbi_dev->minor)
4583                         video_unregister_device(btv->vbi_dev);
4584                 else
4585                         video_device_release(btv->vbi_dev);
4586                 btv->vbi_dev = NULL;
4587         }
4588         if (btv->radio_dev) {
4589                 if (-1 != btv->radio_dev->minor)
4590                         video_unregister_device(btv->radio_dev);
4591                 else
4592                         video_device_release(btv->radio_dev);
4593                 btv->radio_dev = NULL;
4594         }
4595 }
4596
4597 /* register video4linux devices */
4598 static int __devinit bttv_register_video(struct bttv *btv)
4599 {
4600         if (no_overlay <= 0) {
4601                 bttv_video_template.type |= VID_TYPE_OVERLAY;
4602         } else {
4603                 printk("bttv: Overlay support disabled.\n");
4604         }
4605
4606         /* video */
4607         btv->video_dev = vdev_init(btv, &bttv_video_template, "video");
4608         if (NULL == btv->video_dev)
4609                 goto err;
4610         if (video_register_device(btv->video_dev,VFL_TYPE_GRABBER,video_nr)<0)
4611                 goto err;
4612         printk(KERN_INFO "bttv%d: registered device video%d\n",
4613                btv->c.nr,btv->video_dev->minor & 0x1f);
4614         if (device_create_file(&btv->video_dev->class_dev,
4615                                      &dev_attr_card)<0) {
4616                 printk(KERN_ERR "bttv%d: device_create_file 'card' "
4617                        "failed\n", btv->c.nr);
4618                 goto err;
4619         }
4620
4621         /* vbi */
4622         btv->vbi_dev = vdev_init(btv, &bttv_vbi_template, "vbi");
4623         if (NULL == btv->vbi_dev)
4624                 goto err;
4625         if (video_register_device(btv->vbi_dev,VFL_TYPE_VBI,vbi_nr)<0)
4626                 goto err;
4627         printk(KERN_INFO "bttv%d: registered device vbi%d\n",
4628                btv->c.nr,btv->vbi_dev->minor & 0x1f);
4629
4630         if (!btv->has_radio)
4631                 return 0;
4632         /* radio */
4633         btv->radio_dev = vdev_init(btv, &radio_template, "radio");
4634         if (NULL == btv->radio_dev)
4635                 goto err;
4636         if (video_register_device(btv->radio_dev, VFL_TYPE_RADIO,radio_nr)<0)
4637                 goto err;
4638         printk(KERN_INFO "bttv%d: registered device radio%d\n",
4639                btv->c.nr,btv->radio_dev->minor & 0x1f);
4640
4641         /* all done */
4642         return 0;
4643
4644  err:
4645         bttv_unregister_video(btv);
4646         return -1;
4647 }
4648
4649
4650 /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
4651 /* response on cards with no firmware is not enabled by OF */
4652 static void pci_set_command(struct pci_dev *dev)
4653 {
4654 #if defined(__powerpc__)
4655         unsigned int cmd;
4656
4657         pci_read_config_dword(dev, PCI_COMMAND, &cmd);
4658         cmd = (cmd | PCI_COMMAND_MEMORY );
4659         pci_write_config_dword(dev, PCI_COMMAND, cmd);
4660 #endif
4661 }
4662
4663 static int __devinit bttv_probe(struct pci_dev *dev,
4664                                 const struct pci_device_id *pci_id)
4665 {
4666         int result;
4667         unsigned char lat;
4668         struct bttv *btv;
4669
4670         if (bttv_num == BTTV_MAX)
4671                 return -ENOMEM;
4672         printk(KERN_INFO "bttv: Bt8xx card found (%d).\n", bttv_num);
4673         btv=&bttvs[bttv_num];
4674         memset(btv,0,sizeof(*btv));
4675         btv->c.nr  = bttv_num;
4676         sprintf(btv->c.name,"bttv%d",btv->c.nr);
4677
4678         /* initialize structs / fill in defaults */
4679         mutex_init(&btv->lock);
4680         spin_lock_init(&btv->s_lock);
4681         spin_lock_init(&btv->gpio_lock);
4682         init_waitqueue_head(&btv->gpioq);
4683         init_waitqueue_head(&btv->i2c_queue);
4684         INIT_LIST_HEAD(&btv->c.subs);
4685         INIT_LIST_HEAD(&btv->capture);
4686         INIT_LIST_HEAD(&btv->vcapture);
4687         v4l2_prio_init(&btv->prio);
4688
4689         init_timer(&btv->timeout);
4690         btv->timeout.function = bttv_irq_timeout;
4691         btv->timeout.data     = (unsigned long)btv;
4692
4693         btv->i2c_rc = -1;
4694         btv->tuner_type  = UNSET;
4695         btv->new_input   = UNSET;
4696         btv->has_radio=radio[btv->c.nr];
4697
4698         /* pci stuff (init, get irq/mmio, ... */
4699         btv->c.pci = dev;
4700         btv->id  = dev->device;
4701         if (pci_enable_device(dev)) {
4702                 printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4703                        btv->c.nr);
4704                 return -EIO;
4705         }
4706         if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
4707                 printk(KERN_WARNING "bttv%d: No suitable DMA available.\n",
4708                        btv->c.nr);
4709                 return -EIO;
4710         }
4711         if (!request_mem_region(pci_resource_start(dev,0),
4712                                 pci_resource_len(dev,0),
4713                                 btv->c.name)) {
4714                 printk(KERN_WARNING "bttv%d: can't request iomem (0x%llx).\n",
4715                        btv->c.nr,
4716                        (unsigned long long)pci_resource_start(dev,0));
4717                 return -EBUSY;
4718         }
4719         pci_set_master(dev);
4720         pci_set_command(dev);
4721         pci_set_drvdata(dev,btv);
4722
4723         pci_read_config_byte(dev, PCI_CLASS_REVISION, &btv->revision);
4724         pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
4725         printk(KERN_INFO "bttv%d: Bt%d (rev %d) at %s, ",
4726                bttv_num,btv->id, btv->revision, pci_name(dev));
4727         printk("irq: %d, latency: %d, mmio: 0x%llx\n",
4728                btv->c.pci->irq, lat,
4729                (unsigned long long)pci_resource_start(dev,0));
4730         schedule();
4731
4732         btv->bt848_mmio = ioremap(pci_resource_start(dev, 0), 0x1000);
4733         if (NULL == btv->bt848_mmio) {
4734                 printk("bttv%d: ioremap() failed\n", btv->c.nr);
4735                 result = -EIO;
4736                 goto fail1;
4737         }
4738
4739         /* identify card */
4740         bttv_idcard(btv);
4741
4742         /* disable irqs, register irq handler */
4743         btwrite(0, BT848_INT_MASK);
4744         result = request_irq(btv->c.pci->irq, bttv_irq,
4745                              IRQF_SHARED | IRQF_DISABLED,btv->c.name,(void *)btv);
4746         if (result < 0) {
4747                 printk(KERN_ERR "bttv%d: can't get IRQ %d\n",
4748                        bttv_num,btv->c.pci->irq);
4749                 goto fail1;
4750         }
4751
4752         if (0 != bttv_handle_chipset(btv)) {
4753                 result = -EIO;
4754                 goto fail2;
4755         }
4756
4757         /* init options from insmod args */
4758         btv->opt_combfilter = combfilter;
4759         btv->opt_lumafilter = lumafilter;
4760         btv->opt_automute   = automute;
4761         btv->opt_chroma_agc = chroma_agc;
4762         btv->opt_adc_crush  = adc_crush;
4763         btv->opt_vcr_hack   = vcr_hack;
4764         btv->opt_whitecrush_upper  = whitecrush_upper;
4765         btv->opt_whitecrush_lower  = whitecrush_lower;
4766         btv->opt_uv_ratio   = uv_ratio;
4767         btv->opt_full_luma_range   = full_luma_range;
4768         btv->opt_coring     = coring;
4769
4770         /* fill struct bttv with some useful defaults */
4771         btv->init.btv         = btv;
4772         btv->init.ov.w.width  = 320;
4773         btv->init.ov.w.height = 240;
4774         btv->init.fmt         = format_by_palette(VIDEO_PALETTE_RGB24);
4775         btv->init.width       = 320;
4776         btv->init.height      = 240;
4777         btv->input = 0;
4778
4779         /* initialize hardware */
4780         if (bttv_gpio)
4781                 bttv_gpio_tracking(btv,"pre-init");
4782
4783         bttv_risc_init_main(btv);
4784         init_bt848(btv);
4785
4786         /* gpio */
4787         btwrite(0x00, BT848_GPIO_REG_INP);
4788         btwrite(0x00, BT848_GPIO_OUT_EN);
4789         if (bttv_verbose)
4790                 bttv_gpio_tracking(btv,"init");
4791
4792         /* needs to be done before i2c is registered */
4793         bttv_init_card1(btv);
4794
4795         /* register i2c + gpio */
4796         init_bttv_i2c(btv);
4797
4798         /* some card-specific stuff (needs working i2c) */
4799         bttv_init_card2(btv);
4800         init_irqreg(btv);
4801
4802         /* register video4linux + input */
4803         if (!bttv_tvcards[btv->c.type].no_video) {
4804                 bttv_register_video(btv);
4805                 bt848_bright(btv,32768);
4806                 bt848_contrast(btv,32768);
4807                 bt848_hue(btv,32768);
4808                 bt848_sat(btv,32768);
4809                 audio_mute(btv, 1);
4810                 set_input(btv, 0, btv->tvnorm);
4811                 bttv_crop_reset(&btv->crop[0], btv->tvnorm);
4812                 btv->crop[1] = btv->crop[0]; /* current = default */
4813                 disclaim_vbi_lines(btv);
4814                 disclaim_video_lines(btv);
4815         }
4816
4817         /* add subdevices and autoload dvb-bt8xx if needed */
4818         if (bttv_tvcards[btv->c.type].has_dvb) {
4819                 bttv_sub_add_device(&btv->c, "dvb");
4820                 request_modules(btv);
4821         }
4822
4823         bttv_input_init(btv);
4824
4825         /* everything is fine */
4826         bttv_num++;
4827         return 0;
4828
4829  fail2:
4830         free_irq(btv->c.pci->irq,btv);
4831
4832  fail1:
4833         if (btv->bt848_mmio)
4834                 iounmap(btv->bt848_mmio);
4835         release_mem_region(pci_resource_start(btv->c.pci,0),
4836                            pci_resource_len(btv->c.pci,0));
4837         pci_set_drvdata(dev,NULL);
4838         return result;
4839 }
4840
4841 static void __devexit bttv_remove(struct pci_dev *pci_dev)
4842 {
4843         struct bttv *btv = pci_get_drvdata(pci_dev);
4844
4845         if (bttv_verbose)
4846                 printk("bttv%d: unloading\n",btv->c.nr);
4847
4848         /* shutdown everything (DMA+IRQs) */
4849         btand(~15, BT848_GPIO_DMA_CTL);
4850         btwrite(0, BT848_INT_MASK);
4851         btwrite(~0x0, BT848_INT_STAT);
4852         btwrite(0x0, BT848_GPIO_OUT_EN);
4853         if (bttv_gpio)
4854                 bttv_gpio_tracking(btv,"cleanup");
4855
4856         /* tell gpio modules we are leaving ... */
4857         btv->shutdown=1;
4858         wake_up(&btv->gpioq);
4859         bttv_input_fini(btv);
4860         bttv_sub_del_devices(&btv->c);
4861
4862         /* unregister i2c_bus + input */
4863         fini_bttv_i2c(btv);
4864
4865         /* unregister video4linux */
4866         bttv_unregister_video(btv);
4867
4868         /* free allocated memory */
4869         btcx_riscmem_free(btv->c.pci,&btv->main);
4870
4871         /* free ressources */
4872         free_irq(btv->c.pci->irq,btv);
4873         iounmap(btv->bt848_mmio);
4874         release_mem_region(pci_resource_start(btv->c.pci,0),
4875                            pci_resource_len(btv->c.pci,0));
4876
4877         pci_set_drvdata(pci_dev, NULL);
4878         return;
4879 }
4880
4881 #ifdef CONFIG_PM
4882 static int bttv_suspend(struct pci_dev *pci_dev, pm_message_t state)
4883 {
4884         struct bttv *btv = pci_get_drvdata(pci_dev);
4885         struct bttv_buffer_set idle;
4886         unsigned long flags;
4887
4888         dprintk("bttv%d: suspend %d\n", btv->c.nr, state.event);
4889
4890         /* stop dma + irqs */
4891         spin_lock_irqsave(&btv->s_lock,flags);
4892         memset(&idle, 0, sizeof(idle));
4893         btv->state.video = btv->curr;
4894         btv->state.vbi   = btv->cvbi;
4895         btv->state.loop_irq = btv->loop_irq;
4896         btv->curr = idle;
4897         btv->loop_irq = 0;
4898         bttv_buffer_activate_video(btv, &idle);
4899         bttv_buffer_activate_vbi(btv, NULL);
4900         bttv_set_dma(btv, 0);
4901         btwrite(0, BT848_INT_MASK);
4902         spin_unlock_irqrestore(&btv->s_lock,flags);
4903
4904         /* save bt878 state */
4905         btv->state.gpio_enable = btread(BT848_GPIO_OUT_EN);
4906         btv->state.gpio_data   = gpio_read();
4907
4908         /* save pci state */
4909         pci_save_state(pci_dev);
4910         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
4911                 pci_disable_device(pci_dev);
4912                 btv->state.disabled = 1;
4913         }
4914         return 0;
4915 }
4916
4917 static int bttv_resume(struct pci_dev *pci_dev)
4918 {
4919         struct bttv *btv = pci_get_drvdata(pci_dev);
4920         unsigned long flags;
4921         int err;
4922
4923         dprintk("bttv%d: resume\n", btv->c.nr);
4924
4925         /* restore pci state */
4926         if (btv->state.disabled) {
4927                 err=pci_enable_device(pci_dev);
4928                 if (err) {
4929                         printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4930                                                                 btv->c.nr);
4931                         return err;
4932                 }
4933                 btv->state.disabled = 0;
4934         }
4935         err=pci_set_power_state(pci_dev, PCI_D0);
4936         if (err) {
4937                 pci_disable_device(pci_dev);
4938                 printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4939                                                         btv->c.nr);
4940                 btv->state.disabled = 1;
4941                 return err;
4942         }
4943
4944         pci_restore_state(pci_dev);
4945
4946         /* restore bt878 state */
4947         bttv_reinit_bt848(btv);
4948         gpio_inout(0xffffff, btv->state.gpio_enable);
4949         gpio_write(btv->state.gpio_data);
4950
4951         /* restart dma */
4952         spin_lock_irqsave(&btv->s_lock,flags);
4953         btv->curr = btv->state.video;
4954         btv->cvbi = btv->state.vbi;
4955         btv->loop_irq = btv->state.loop_irq;
4956         bttv_buffer_activate_video(btv, &btv->curr);
4957         bttv_buffer_activate_vbi(btv, btv->cvbi);
4958         bttv_set_dma(btv, 0);
4959         spin_unlock_irqrestore(&btv->s_lock,flags);
4960         return 0;
4961 }
4962 #endif
4963
4964 static struct pci_device_id bttv_pci_tbl[] = {
4965         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT848,
4966          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4967         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT849,
4968          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4969         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT878,
4970          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4971         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT879,
4972          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4973         {0,}
4974 };
4975
4976 MODULE_DEVICE_TABLE(pci, bttv_pci_tbl);
4977
4978 static struct pci_driver bttv_pci_driver = {
4979         .name     = "bttv",
4980         .id_table = bttv_pci_tbl,
4981         .probe    = bttv_probe,
4982         .remove   = __devexit_p(bttv_remove),
4983 #ifdef CONFIG_PM
4984         .suspend  = bttv_suspend,
4985         .resume   = bttv_resume,
4986 #endif
4987 };
4988
4989 static int bttv_init_module(void)
4990 {
4991         int ret;
4992
4993         bttv_num = 0;
4994
4995         printk(KERN_INFO "bttv: driver version %d.%d.%d loaded\n",
4996                (BTTV_VERSION_CODE >> 16) & 0xff,
4997                (BTTV_VERSION_CODE >> 8) & 0xff,
4998                BTTV_VERSION_CODE & 0xff);
4999 #ifdef SNAPSHOT
5000         printk(KERN_INFO "bttv: snapshot date %04d-%02d-%02d\n",
5001                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
5002 #endif
5003         if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
5004                 gbuffers = 2;
5005         if (gbufsize < 0 || gbufsize > BTTV_MAX_FBUF)
5006                 gbufsize = BTTV_MAX_FBUF;
5007         gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;
5008         if (bttv_verbose)
5009                 printk(KERN_INFO "bttv: using %d buffers with %dk (%d pages) each for capture\n",
5010                        gbuffers, gbufsize >> 10, gbufsize >> PAGE_SHIFT);
5011
5012         bttv_check_chipset();
5013
5014         ret = bus_register(&bttv_sub_bus_type);
5015         if (ret < 0) {
5016                 printk(KERN_WARNING "bttv: bus_register error: %d\n", ret);
5017                 return ret;
5018         }
5019         return pci_register_driver(&bttv_pci_driver);
5020 }
5021
5022 static void bttv_cleanup_module(void)
5023 {
5024         pci_unregister_driver(&bttv_pci_driver);
5025         bus_unregister(&bttv_sub_bus_type);
5026         return;
5027 }
5028
5029 module_init(bttv_init_module);
5030 module_exit(bttv_cleanup_module);
5031
5032 /*
5033  * Local variables:
5034  * c-basic-offset: 8
5035  * End:
5036  */