git.oblomov.eu Git - linux-2.6/blob - 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     V4L1 removal from:
  13     (c) 2005-2006 Nickolay V. Shmyrev <nshmyrev@yandex.ru>
  14
  15     Fixes to be fully V4L2 compliant by
  16     (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
  17
  18     Cropping and overscan support
  19     Copyright (C) 2005, 2006 Michael H. Schimek <mschimek@gmx.at>
  20     Sponsored by OPQ Systems AB
  21
  22     This program is free software; you can redistribute it and/or modify
  23     it under the terms of the GNU General Public License as published by
  24     the Free Software Foundation; either version 2 of the License, or
  25     (at your option) any later version.
  26
  27     This program is distributed in the hope that it will be useful,
  28     but WITHOUT ANY WARRANTY; without even the implied warranty of
  29     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  30     GNU General Public License for more details.
  31
  32     You should have received a copy of the GNU General Public License
  33     along with this program; if not, write to the Free Software
  34     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  35 */
  36
  37 #include <linux/init.h>
  38 #include <linux/module.h>
  39 #include <linux/delay.h>
  40 #include <linux/errno.h>
  41 #include <linux/fs.h>
  42 #include <linux/kernel.h>
  43 #include <linux/sched.h>
  44 #include <linux/interrupt.h>
  45 #include <linux/kdev_t.h>
  46 #include "bttvp.h"
  47 #include <media/v4l2-common.h>
  48 #include <media/tvaudio.h>
  49 #include <media/msp3400.h>
  50
  51 #include <linux/dma-mapping.h>
  52
  53 #include <asm/io.h>
  54 #include <asm/byteorder.h>
  55
  56 #include <media/rds.h>
  57
  58
  59 unsigned int bttv_num;                  /* number of Bt848s in use */
  60 struct bttv bttvs[BTTV_MAX];
  61
  62 unsigned int bttv_debug;
  63 unsigned int bttv_verbose = 1;
  64 unsigned int bttv_gpio;
  65
  66 /* config variables */
  67 #ifdef __BIG_ENDIAN
  68 static unsigned int bigendian=1;
  69 #else
  70 static unsigned int bigendian;
  71 #endif
  72 static unsigned int radio[BTTV_MAX];
  73 static unsigned int irq_debug;
  74 static unsigned int gbuffers = 8;
  75 static unsigned int gbufsize = 0x208000;
  76 static unsigned int reset_crop = 1;
  77
  78 static int video_nr = -1;
  79 static int radio_nr = -1;
  80 static int vbi_nr = -1;
  81 static int debug_latency;
  82
  83 static unsigned int fdsr;
  84
  85 /* options */
  86 static unsigned int combfilter;
  87 static unsigned int lumafilter;
  88 static unsigned int automute    = 1;
  89 static unsigned int chroma_agc;
  90 static unsigned int adc_crush   = 1;
  91 static unsigned int whitecrush_upper = 0xCF;
  92 static unsigned int whitecrush_lower = 0x7F;
  93 static unsigned int vcr_hack;
  94 static unsigned int irq_iswitch;
  95 static unsigned int uv_ratio    = 50;
  96 static unsigned int full_luma_range;
  97 static unsigned int coring;
  98 extern int no_overlay;
  99
 100 /* API features (turn on/off stuff for testing) */
 101 static unsigned int v4l2        = 1;
 102
 103 /* insmod args */
 104 module_param(bttv_verbose,      int, 0644);
 105 module_param(bttv_gpio,         int, 0644);
 106 module_param(bttv_debug,        int, 0644);
 107 module_param(irq_debug,         int, 0644);
 108 module_param(debug_latency,     int, 0644);
 109
 110 module_param(fdsr,              int, 0444);
 111 module_param(video_nr,          int, 0444);
 112 module_param(radio_nr,          int, 0444);
 113 module_param(vbi_nr,            int, 0444);
 114 module_param(gbuffers,          int, 0444);
 115 module_param(gbufsize,          int, 0444);
 116 module_param(reset_crop,        int, 0444);
 117
 118 module_param(v4l2,              int, 0644);
 119 module_param(bigendian,         int, 0644);
 120 module_param(irq_iswitch,       int, 0644);
 121 module_param(combfilter,        int, 0444);
 122 module_param(lumafilter,        int, 0444);
 123 module_param(automute,          int, 0444);
 124 module_param(chroma_agc,        int, 0444);
 125 module_param(adc_crush,         int, 0444);
 126 module_param(whitecrush_upper,  int, 0444);
 127 module_param(whitecrush_lower,  int, 0444);
 128 module_param(vcr_hack,          int, 0444);
 129 module_param(uv_ratio,          int, 0444);
 130 module_param(full_luma_range,   int, 0444);
 131 module_param(coring,            int, 0444);
 132
 133 module_param_array(radio, int, NULL, 0444);
 134
 135 MODULE_PARM_DESC(radio,"The TV card supports radio, default is 0 (no)");
 136 MODULE_PARM_DESC(bigendian,"byte order of the framebuffer, default is native endian");
 137 MODULE_PARM_DESC(bttv_verbose,"verbose startup messages, default is 1 (yes)");
 138 MODULE_PARM_DESC(bttv_gpio,"log gpio changes, default is 0 (no)");
 139 MODULE_PARM_DESC(bttv_debug,"debug messages, default is 0 (no)");
 140 MODULE_PARM_DESC(irq_debug,"irq handler debug messages, default is 0 (no)");
 141 MODULE_PARM_DESC(gbuffers,"number of capture buffers. range 2-32, default 8");
 142 MODULE_PARM_DESC(gbufsize,"size of the capture buffers, default is 0x208000");
 143 MODULE_PARM_DESC(reset_crop,"reset cropping parameters at open(), default "
 144                  "is 1 (yes) for compatibility with older applications");
 145 MODULE_PARM_DESC(automute,"mute audio on bad/missing video signal, default is 1 (yes)");
 146 MODULE_PARM_DESC(chroma_agc,"enables the AGC of chroma signal, default is 0 (no)");
 147 MODULE_PARM_DESC(adc_crush,"enables the luminance ADC crush, default is 1 (yes)");
 148 MODULE_PARM_DESC(whitecrush_upper,"sets the white crush upper value, default is 207");
 149 MODULE_PARM_DESC(whitecrush_lower,"sets the white crush lower value, default is 127");
 150 MODULE_PARM_DESC(vcr_hack,"enables the VCR hack (improves synch on poor VCR tapes), default is 0 (no)");
 151 MODULE_PARM_DESC(irq_iswitch,"switch inputs in irq handler");
 152 MODULE_PARM_DESC(uv_ratio,"ratio between u and v gains, default is 50");
 153 MODULE_PARM_DESC(full_luma_range,"use the full luma range, default is 0 (no)");
 154 MODULE_PARM_DESC(coring,"set the luma coring level, default is 0 (no)");
 155
 156 MODULE_DESCRIPTION("bttv - v4l/v4l2 driver module for bt848/878 based cards");
 157 MODULE_AUTHOR("Ralph Metzler & Marcus Metzler & Gerd Knorr");
 158 MODULE_LICENSE("GPL");
 159
 160 /* ----------------------------------------------------------------------- */
 161 /* sysfs                                                                   */
 162
 163 static ssize_t show_card(struct device *cd,
 164                          struct device_attribute *attr, char *buf)
 165 {
 166         struct video_device *vfd = container_of(cd, struct video_device, class_dev);
 167         struct bttv *btv = dev_get_drvdata(vfd->dev);
 168         return sprintf(buf, "%d\n", btv ? btv->c.type : UNSET);
 169 }
 170 static DEVICE_ATTR(card, S_IRUGO, show_card, NULL);
 171
 172 /* ----------------------------------------------------------------------- */
 173 /* dvb auto-load setup                                                     */
 174 #if defined(CONFIG_MODULES) && defined(MODULE)
 175 static void request_module_async(struct work_struct *work)
 176 {
 177         request_module("dvb-bt8xx");
 178 }
 179
 180 static void request_modules(struct bttv *dev)
 181 {
 182         INIT_WORK(&dev->request_module_wk, request_module_async);
 183         schedule_work(&dev->request_module_wk);
 184 }
 185 #else
 186 #define request_modules(dev)
 187 #endif /* CONFIG_MODULES */
 188
 189
 190 /* ----------------------------------------------------------------------- */
 191 /* static data                                                             */
 192
 193 /* special timing tables from conexant... */
 194 static u8 SRAM_Table[][60] =
 195 {
 196         /* PAL digital input over GPIO[7:0] */
 197         {
 198                 45, // 45 bytes following
 199                 0x36,0x11,0x01,0x00,0x90,0x02,0x05,0x10,0x04,0x16,
 200                 0x12,0x05,0x11,0x00,0x04,0x12,0xC0,0x00,0x31,0x00,
 201                 0x06,0x51,0x08,0x03,0x89,0x08,0x07,0xC0,0x44,0x00,
 202                 0x81,0x01,0x01,0xA9,0x0D,0x02,0x02,0x50,0x03,0x37,
 203                 0x37,0x00,0xAF,0x21,0x00
 204         },
 205         /* NTSC digital input over GPIO[7:0] */
 206         {
 207                 51, // 51 bytes following
 208                 0x0C,0xC0,0x00,0x00,0x90,0x02,0x03,0x10,0x03,0x06,
 209                 0x10,0x04,0x12,0x12,0x05,0x02,0x13,0x04,0x19,0x00,
 210                 0x04,0x39,0x00,0x06,0x59,0x08,0x03,0x83,0x08,0x07,
 211                 0x03,0x50,0x00,0xC0,0x40,0x00,0x86,0x01,0x01,0xA6,
 212                 0x0D,0x02,0x03,0x11,0x01,0x05,0x37,0x00,0xAC,0x21,
 213                 0x00,
 214         },
 215         // TGB_NTSC392 // quartzsight
 216         // This table has been modified to be used for Fusion Rev D
 217         {
 218                 0x2A, // size of table = 42
 219                 0x06, 0x08, 0x04, 0x0a, 0xc0, 0x00, 0x18, 0x08, 0x03, 0x24,
 220                 0x08, 0x07, 0x02, 0x90, 0x02, 0x08, 0x10, 0x04, 0x0c, 0x10,
 221                 0x05, 0x2c, 0x11, 0x04, 0x55, 0x48, 0x00, 0x05, 0x50, 0x00,
 222                 0xbf, 0x0c, 0x02, 0x2f, 0x3d, 0x00, 0x2f, 0x3f, 0x00, 0xc3,
 223                 0x20, 0x00
 224         }
 225 };
 226
 227 /* minhdelayx1  first video pixel we can capture on a line and
 228    hdelayx1     start of active video, both relative to rising edge of
 229                 /HRESET pulse (0H) in 1 / fCLKx1.
 230    swidth       width of active video and
 231    totalwidth   total line width, both in 1 / fCLKx1.
 232    sqwidth      total line width in square pixels.
 233    vdelay       start of active video in 2 * field lines relative to
 234                 trailing edge of /VRESET pulse (VDELAY register).
 235    sheight      height of active video in 2 * field lines.
 236    videostart0  ITU-R frame line number of the line corresponding
 237                 to vdelay in the first field. */
 238 #define CROPCAP(minhdelayx1, hdelayx1, swidth, totalwidth, sqwidth,      \
 239                 vdelay, sheight, videostart0)                            \
 240         .cropcap.bounds.left = minhdelayx1,                              \
 241         /* * 2 because vertically we count field lines times two, */     \
 242         /* e.g. 23 * 2 to 23 * 2 + 576 in PAL-BGHI defrect. */           \
 243         .cropcap.bounds.top = (videostart0) * 2 - (vdelay) + MIN_VDELAY, \
 244         /* 4 is a safety margin at the end of the line. */               \
 245         .cropcap.bounds.width = (totalwidth) - (minhdelayx1) - 4,        \
 246         .cropcap.bounds.height = (sheight) + (vdelay) - MIN_VDELAY,      \
 247         .cropcap.defrect.left = hdelayx1,                                \
 248         .cropcap.defrect.top = (videostart0) * 2,                        \
 249         .cropcap.defrect.width = swidth,                                 \
 250         .cropcap.defrect.height = sheight,                               \
 251         .cropcap.pixelaspect.numerator = totalwidth,                     \
 252         .cropcap.pixelaspect.denominator = sqwidth,
 253
 254 const struct bttv_tvnorm bttv_tvnorms[] = {
 255         /* PAL-BDGHI */
 256         /* max. active video is actually 922, but 924 is divisible by 4 and 3! */
 257         /* actually, max active PAL with HSCALE=0 is 948, NTSC is 768 - nil */
 258         {
 259                 .v4l2_id        = V4L2_STD_PAL,
 260                 .name           = "PAL",
 261                 .Fsc            = 35468950,
 262                 .swidth         = 924,
 263                 .sheight        = 576,
 264                 .totalwidth     = 1135,
 265                 .adelay         = 0x7f,
 266                 .bdelay         = 0x72,
 267                 .iform          = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1),
 268                 .scaledtwidth   = 1135,
 269                 .hdelayx1       = 186,
 270                 .hactivex1      = 924,
 271                 .vdelay         = 0x20,
 272                 .vbipack        = 255, /* min (2048 / 4, 0x1ff) & 0xff */
 273                 .sram           = 0,
 274                 /* ITU-R frame line number of the first VBI line
 275                    we can capture, of the first and second field.
 276                    The last line is determined by cropcap.bounds. */
 277                 .vbistart       = { 7, 320 },
 278                 CROPCAP(/* minhdelayx1 */ 68,
 279                         /* hdelayx1 */ 186,
 280                         /* Should be (768 * 1135 + 944 / 2) / 944.
 281                            cropcap.defrect is used for image width
 282                            checks, so we keep the old value 924. */
 283                         /* swidth */ 924,
 284                         /* totalwidth */ 1135,
 285                         /* sqwidth */ 944,
 286                         /* vdelay */ 0x20,
 287                         /* sheight */ 576,
 288                         /* videostart0 */ 23)
 289                 /* bt878 (and bt848?) can capture another
 290                    line below active video. */
 291                 .cropcap.bounds.height = (576 + 2) + 0x20 - 2,
 292         },{
 293                 .v4l2_id        = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR,
 294                 .name           = "NTSC",
 295                 .Fsc            = 28636363,
 296                 .swidth         = 768,
 297                 .sheight        = 480,
 298                 .totalwidth     = 910,
 299                 .adelay         = 0x68,
 300                 .bdelay         = 0x5d,
 301                 .iform          = (BT848_IFORM_NTSC|BT848_IFORM_XT0),
 302                 .scaledtwidth   = 910,
 303                 .hdelayx1       = 128,
 304                 .hactivex1      = 910,
 305                 .vdelay         = 0x1a,
 306                 .vbipack        = 144, /* min (1600 / 4, 0x1ff) & 0xff */
 307                 .sram           = 1,
 308                 .vbistart       = { 10, 273 },
 309                 CROPCAP(/* minhdelayx1 */ 68,
 310                         /* hdelayx1 */ 128,
 311                         /* Should be (640 * 910 + 780 / 2) / 780? */
 312                         /* swidth */ 768,
 313                         /* totalwidth */ 910,
 314                         /* sqwidth */ 780,
 315                         /* vdelay */ 0x1a,
 316                         /* sheight */ 480,
 317                         /* videostart0 */ 23)
 318         },{
 319                 .v4l2_id        = V4L2_STD_SECAM,
 320                 .name           = "SECAM",
 321                 .Fsc            = 35468950,
 322                 .swidth         = 924,
 323                 .sheight        = 576,
 324                 .totalwidth     = 1135,
 325                 .adelay         = 0x7f,
 326                 .bdelay         = 0xb0,
 327                 .iform          = (BT848_IFORM_SECAM|BT848_IFORM_XT1),
 328                 .scaledtwidth   = 1135,
 329                 .hdelayx1       = 186,
 330                 .hactivex1      = 922,
 331                 .vdelay         = 0x20,
 332                 .vbipack        = 255,
 333                 .sram           = 0, /* like PAL, correct? */
 334                 .vbistart       = { 7, 320 },
 335                 CROPCAP(/* minhdelayx1 */ 68,
 336                         /* hdelayx1 */ 186,
 337                         /* swidth */ 924,
 338                         /* totalwidth */ 1135,
 339                         /* sqwidth */ 944,
 340                         /* vdelay */ 0x20,
 341                         /* sheight */ 576,
 342                         /* videostart0 */ 23)
 343         },{
 344                 .v4l2_id        = V4L2_STD_PAL_Nc,
 345                 .name           = "PAL-Nc",
 346                 .Fsc            = 28636363,
 347                 .swidth         = 640,
 348                 .sheight        = 576,
 349                 .totalwidth     = 910,
 350                 .adelay         = 0x68,
 351                 .bdelay         = 0x5d,
 352                 .iform          = (BT848_IFORM_PAL_NC|BT848_IFORM_XT0),
 353                 .scaledtwidth   = 780,
 354                 .hdelayx1       = 130,
 355                 .hactivex1      = 734,
 356                 .vdelay         = 0x1a,
 357                 .vbipack        = 144,
 358                 .sram           = -1,
 359                 .vbistart       = { 7, 320 },
 360                 CROPCAP(/* minhdelayx1 */ 68,
 361                         /* hdelayx1 */ 130,
 362                         /* swidth */ (640 * 910 + 780 / 2) / 780,
 363                         /* totalwidth */ 910,
 364                         /* sqwidth */ 780,
 365                         /* vdelay */ 0x1a,
 366                         /* sheight */ 576,
 367                         /* videostart0 */ 23)
 368         },{
 369                 .v4l2_id        = V4L2_STD_PAL_M,
 370                 .name           = "PAL-M",
 371                 .Fsc            = 28636363,
 372                 .swidth         = 640,
 373                 .sheight        = 480,
 374                 .totalwidth     = 910,
 375                 .adelay         = 0x68,
 376                 .bdelay         = 0x5d,
 377                 .iform          = (BT848_IFORM_PAL_M|BT848_IFORM_XT0),
 378                 .scaledtwidth   = 780,
 379                 .hdelayx1       = 135,
 380                 .hactivex1      = 754,
 381                 .vdelay         = 0x1a,
 382                 .vbipack        = 144,
 383                 .sram           = -1,
 384                 .vbistart       = { 10, 273 },
 385                 CROPCAP(/* minhdelayx1 */ 68,
 386                         /* hdelayx1 */ 135,
 387                         /* swidth */ (640 * 910 + 780 / 2) / 780,
 388                         /* totalwidth */ 910,
 389                         /* sqwidth */ 780,
 390                         /* vdelay */ 0x1a,
 391                         /* sheight */ 480,
 392                         /* videostart0 */ 23)
 393         },{
 394                 .v4l2_id        = V4L2_STD_PAL_N,
 395                 .name           = "PAL-N",
 396                 .Fsc            = 35468950,
 397                 .swidth         = 768,
 398                 .sheight        = 576,
 399                 .totalwidth     = 1135,
 400                 .adelay         = 0x7f,
 401                 .bdelay         = 0x72,
 402                 .iform          = (BT848_IFORM_PAL_N|BT848_IFORM_XT1),
 403                 .scaledtwidth   = 944,
 404                 .hdelayx1       = 186,
 405                 .hactivex1      = 922,
 406                 .vdelay         = 0x20,
 407                 .vbipack        = 144,
 408                 .sram           = -1,
 409                 .vbistart       = { 7, 320 },
 410                 CROPCAP(/* minhdelayx1 */ 68,
 411                         /* hdelayx1 */ 186,
 412                         /* swidth */ (768 * 1135 + 944 / 2) / 944,
 413                         /* totalwidth */ 1135,
 414                         /* sqwidth */ 944,
 415                         /* vdelay */ 0x20,
 416                         /* sheight */ 576,
 417                         /* videostart0 */ 23)
 418         },{
 419                 .v4l2_id        = V4L2_STD_NTSC_M_JP,
 420                 .name           = "NTSC-JP",
 421                 .Fsc            = 28636363,
 422                 .swidth         = 640,
 423                 .sheight        = 480,
 424                 .totalwidth     = 910,
 425                 .adelay         = 0x68,
 426                 .bdelay         = 0x5d,
 427                 .iform          = (BT848_IFORM_NTSC_J|BT848_IFORM_XT0),
 428                 .scaledtwidth   = 780,
 429                 .hdelayx1       = 135,
 430                 .hactivex1      = 754,
 431                 .vdelay         = 0x16,
 432                 .vbipack        = 144,
 433                 .sram           = -1,
 434                 .vbistart       = { 10, 273 },
 435                 CROPCAP(/* minhdelayx1 */ 68,
 436                         /* hdelayx1 */ 135,
 437                         /* swidth */ (640 * 910 + 780 / 2) / 780,
 438                         /* totalwidth */ 910,
 439                         /* sqwidth */ 780,
 440                         /* vdelay */ 0x16,
 441                         /* sheight */ 480,
 442                         /* videostart0 */ 23)
 443         },{
 444                 /* that one hopefully works with the strange timing
 445                  * which video recorders produce when playing a NTSC
 446                  * tape on a PAL TV ... */
 447                 .v4l2_id        = V4L2_STD_PAL_60,
 448                 .name           = "PAL-60",
 449                 .Fsc            = 35468950,
 450                 .swidth         = 924,
 451                 .sheight        = 480,
 452                 .totalwidth     = 1135,
 453                 .adelay         = 0x7f,
 454                 .bdelay         = 0x72,
 455                 .iform          = (BT848_IFORM_PAL_BDGHI|BT848_IFORM_XT1),
 456                 .scaledtwidth   = 1135,
 457                 .hdelayx1       = 186,
 458                 .hactivex1      = 924,
 459                 .vdelay         = 0x1a,
 460                 .vbipack        = 255,
 461                 .vtotal         = 524,
 462                 .sram           = -1,
 463                 .vbistart       = { 10, 273 },
 464                 CROPCAP(/* minhdelayx1 */ 68,
 465                         /* hdelayx1 */ 186,
 466                         /* swidth */ 924,
 467                         /* totalwidth */ 1135,
 468                         /* sqwidth */ 944,
 469                         /* vdelay */ 0x1a,
 470                         /* sheight */ 480,
 471                         /* videostart0 */ 23)
 472         }
 473 };
 474 static const unsigned int BTTV_TVNORMS = ARRAY_SIZE(bttv_tvnorms);
 475
 476 /* ----------------------------------------------------------------------- */
 477 /* bttv format list
 478    packed pixel formats must come first */
 479 static const struct bttv_format formats[] = {
 480         {
 481                 .name     = "8 bpp, gray",
 482                 .fourcc   = V4L2_PIX_FMT_GREY,
 483                 .btformat = BT848_COLOR_FMT_Y8,
 484                 .depth    = 8,
 485                 .flags    = FORMAT_FLAGS_PACKED,
 486         },{
 487                 .name     = "8 bpp, dithered color",
 488                 .fourcc   = V4L2_PIX_FMT_HI240,
 489                 .btformat = BT848_COLOR_FMT_RGB8,
 490                 .depth    = 8,
 491                 .flags    = FORMAT_FLAGS_PACKED | FORMAT_FLAGS_DITHER,
 492         },{
 493                 .name     = "15 bpp RGB, le",
 494                 .fourcc   = V4L2_PIX_FMT_RGB555,
 495                 .btformat = BT848_COLOR_FMT_RGB15,
 496                 .depth    = 16,
 497                 .flags    = FORMAT_FLAGS_PACKED,
 498         },{
 499                 .name     = "15 bpp RGB, be",
 500                 .fourcc   = V4L2_PIX_FMT_RGB555X,
 501                 .btformat = BT848_COLOR_FMT_RGB15,
 502                 .btswap   = 0x03, /* byteswap */
 503                 .depth    = 16,
 504                 .flags    = FORMAT_FLAGS_PACKED,
 505         },{
 506                 .name     = "16 bpp RGB, le",
 507                 .fourcc   = V4L2_PIX_FMT_RGB565,
 508                 .btformat = BT848_COLOR_FMT_RGB16,
 509                 .depth    = 16,
 510                 .flags    = FORMAT_FLAGS_PACKED,
 511         },{
 512                 .name     = "16 bpp RGB, be",
 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                 .fourcc   = V4L2_PIX_FMT_BGR24,
 521                 .btformat = BT848_COLOR_FMT_RGB24,
 522                 .depth    = 24,
 523                 .flags    = FORMAT_FLAGS_PACKED,
 524         },{
 525                 .name     = "32 bpp RGB, le",
 526                 .fourcc   = V4L2_PIX_FMT_BGR32,
 527                 .btformat = BT848_COLOR_FMT_RGB32,
 528                 .depth    = 32,
 529                 .flags    = FORMAT_FLAGS_PACKED,
 530         },{
 531                 .name     = "32 bpp RGB, be",
 532                 .fourcc   = V4L2_PIX_FMT_RGB32,
 533                 .btformat = BT848_COLOR_FMT_RGB32,
 534                 .btswap   = 0x0f, /* byte+word swap */
 535                 .depth    = 32,
 536                 .flags    = FORMAT_FLAGS_PACKED,
 537         },{
 538                 .name     = "4:2:2, packed, YUYV",
 539                 .fourcc   = V4L2_PIX_FMT_YUYV,
 540                 .btformat = BT848_COLOR_FMT_YUY2,
 541                 .depth    = 16,
 542                 .flags    = FORMAT_FLAGS_PACKED,
 543         },{
 544                 .name     = "4:2:2, packed, YUYV",
 545                 .fourcc   = V4L2_PIX_FMT_YUYV,
 546                 .btformat = BT848_COLOR_FMT_YUY2,
 547                 .depth    = 16,
 548                 .flags    = FORMAT_FLAGS_PACKED,
 549         },{
 550                 .name     = "4:2:2, packed, UYVY",
 551                 .fourcc   = V4L2_PIX_FMT_UYVY,
 552                 .btformat = BT848_COLOR_FMT_YUY2,
 553                 .btswap   = 0x03, /* byteswap */
 554                 .depth    = 16,
 555                 .flags    = FORMAT_FLAGS_PACKED,
 556         },{
 557                 .name     = "4:2:2, planar, Y-Cb-Cr",
 558                 .fourcc   = V4L2_PIX_FMT_YUV422P,
 559                 .btformat = BT848_COLOR_FMT_YCrCb422,
 560                 .depth    = 16,
 561                 .flags    = FORMAT_FLAGS_PLANAR,
 562                 .hshift   = 1,
 563                 .vshift   = 0,
 564         },{
 565                 .name     = "4:2:0, planar, Y-Cb-Cr",
 566                 .fourcc   = V4L2_PIX_FMT_YUV420,
 567                 .btformat = BT848_COLOR_FMT_YCrCb422,
 568                 .depth    = 12,
 569                 .flags    = FORMAT_FLAGS_PLANAR,
 570                 .hshift   = 1,
 571                 .vshift   = 1,
 572         },{
 573                 .name     = "4:2:0, planar, Y-Cr-Cb",
 574                 .fourcc   = V4L2_PIX_FMT_YVU420,
 575                 .btformat = BT848_COLOR_FMT_YCrCb422,
 576                 .depth    = 12,
 577                 .flags    = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb,
 578                 .hshift   = 1,
 579                 .vshift   = 1,
 580         },{
 581                 .name     = "4:1:1, planar, Y-Cb-Cr",
 582                 .fourcc   = V4L2_PIX_FMT_YUV411P,
 583                 .btformat = BT848_COLOR_FMT_YCrCb411,
 584                 .depth    = 12,
 585                 .flags    = FORMAT_FLAGS_PLANAR,
 586                 .hshift   = 2,
 587                 .vshift   = 0,
 588         },{
 589                 .name     = "4:1:0, planar, Y-Cb-Cr",
 590                 .fourcc   = V4L2_PIX_FMT_YUV410,
 591                 .btformat = BT848_COLOR_FMT_YCrCb411,
 592                 .depth    = 9,
 593                 .flags    = FORMAT_FLAGS_PLANAR,
 594                 .hshift   = 2,
 595                 .vshift   = 2,
 596         },{
 597                 .name     = "4:1:0, planar, Y-Cr-Cb",
 598                 .fourcc   = V4L2_PIX_FMT_YVU410,
 599                 .btformat = BT848_COLOR_FMT_YCrCb411,
 600                 .depth    = 9,
 601                 .flags    = FORMAT_FLAGS_PLANAR | FORMAT_FLAGS_CrCb,
 602                 .hshift   = 2,
 603                 .vshift   = 2,
 604         },{
 605                 .name     = "raw scanlines",
 606                 .fourcc   = -1,
 607                 .btformat = BT848_COLOR_FMT_RAW,
 608                 .depth    = 8,
 609                 .flags    = FORMAT_FLAGS_RAW,
 610         }
 611 };
 612 static const unsigned int FORMATS = ARRAY_SIZE(formats);
 613
 614 /* ----------------------------------------------------------------------- */
 615
 616 #define V4L2_CID_PRIVATE_CHROMA_AGC  (V4L2_CID_PRIVATE_BASE + 0)
 617 #define V4L2_CID_PRIVATE_COMBFILTER  (V4L2_CID_PRIVATE_BASE + 1)
 618 #define V4L2_CID_PRIVATE_AUTOMUTE    (V4L2_CID_PRIVATE_BASE + 2)
 619 #define V4L2_CID_PRIVATE_LUMAFILTER  (V4L2_CID_PRIVATE_BASE + 3)
 620 #define V4L2_CID_PRIVATE_AGC_CRUSH   (V4L2_CID_PRIVATE_BASE + 4)
 621 #define V4L2_CID_PRIVATE_VCR_HACK    (V4L2_CID_PRIVATE_BASE + 5)
 622 #define V4L2_CID_PRIVATE_WHITECRUSH_UPPER   (V4L2_CID_PRIVATE_BASE + 6)
 623 #define V4L2_CID_PRIVATE_WHITECRUSH_LOWER   (V4L2_CID_PRIVATE_BASE + 7)
 624 #define V4L2_CID_PRIVATE_UV_RATIO    (V4L2_CID_PRIVATE_BASE + 8)
 625 #define V4L2_CID_PRIVATE_FULL_LUMA_RANGE    (V4L2_CID_PRIVATE_BASE + 9)
 626 #define V4L2_CID_PRIVATE_CORING      (V4L2_CID_PRIVATE_BASE + 10)
 627 #define V4L2_CID_PRIVATE_LASTP1      (V4L2_CID_PRIVATE_BASE + 11)
 628
 629 static const struct v4l2_queryctrl no_ctl = {
 630         .name  = "42",
 631         .flags = V4L2_CTRL_FLAG_DISABLED,
 632 };
 633 static const struct v4l2_queryctrl bttv_ctls[] = {
 634         /* --- video --- */
 635         {
 636                 .id            = V4L2_CID_BRIGHTNESS,
 637                 .name          = "Brightness",
 638                 .minimum       = 0,
 639                 .maximum       = 65535,
 640                 .step          = 256,
 641                 .default_value = 32768,
 642                 .type          = V4L2_CTRL_TYPE_INTEGER,
 643         },{
 644                 .id            = V4L2_CID_CONTRAST,
 645                 .name          = "Contrast",
 646                 .minimum       = 0,
 647                 .maximum       = 65535,
 648                 .step          = 128,
 649                 .default_value = 32768,
 650                 .type          = V4L2_CTRL_TYPE_INTEGER,
 651         },{
 652                 .id            = V4L2_CID_SATURATION,
 653                 .name          = "Saturation",
 654                 .minimum       = 0,
 655                 .maximum       = 65535,
 656                 .step          = 128,
 657                 .default_value = 32768,
 658                 .type          = V4L2_CTRL_TYPE_INTEGER,
 659         },{
 660                 .id            = V4L2_CID_HUE,
 661                 .name          = "Hue",
 662                 .minimum       = 0,
 663                 .maximum       = 65535,
 664                 .step          = 256,
 665                 .default_value = 32768,
 666                 .type          = V4L2_CTRL_TYPE_INTEGER,
 667         },
 668         /* --- audio --- */
 669         {
 670                 .id            = V4L2_CID_AUDIO_MUTE,
 671                 .name          = "Mute",
 672                 .minimum       = 0,
 673                 .maximum       = 1,
 674                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 675         },{
 676                 .id            = V4L2_CID_AUDIO_VOLUME,
 677                 .name          = "Volume",
 678                 .minimum       = 0,
 679                 .maximum       = 65535,
 680                 .step          = 65535/100,
 681                 .default_value = 65535,
 682                 .type          = V4L2_CTRL_TYPE_INTEGER,
 683         },{
 684                 .id            = V4L2_CID_AUDIO_BALANCE,
 685                 .name          = "Balance",
 686                 .minimum       = 0,
 687                 .maximum       = 65535,
 688                 .step          = 65535/100,
 689                 .default_value = 32768,
 690                 .type          = V4L2_CTRL_TYPE_INTEGER,
 691         },{
 692                 .id            = V4L2_CID_AUDIO_BASS,
 693                 .name          = "Bass",
 694                 .minimum       = 0,
 695                 .maximum       = 65535,
 696                 .step          = 65535/100,
 697                 .default_value = 32768,
 698                 .type          = V4L2_CTRL_TYPE_INTEGER,
 699         },{
 700                 .id            = V4L2_CID_AUDIO_TREBLE,
 701                 .name          = "Treble",
 702                 .minimum       = 0,
 703                 .maximum       = 65535,
 704                 .step          = 65535/100,
 705                 .default_value = 32768,
 706                 .type          = V4L2_CTRL_TYPE_INTEGER,
 707         },
 708         /* --- private --- */
 709         {
 710                 .id            = V4L2_CID_PRIVATE_CHROMA_AGC,
 711                 .name          = "chroma agc",
 712                 .minimum       = 0,
 713                 .maximum       = 1,
 714                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 715         },{
 716                 .id            = V4L2_CID_PRIVATE_COMBFILTER,
 717                 .name          = "combfilter",
 718                 .minimum       = 0,
 719                 .maximum       = 1,
 720                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 721         },{
 722                 .id            = V4L2_CID_PRIVATE_AUTOMUTE,
 723                 .name          = "automute",
 724                 .minimum       = 0,
 725                 .maximum       = 1,
 726                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 727         },{
 728                 .id            = V4L2_CID_PRIVATE_LUMAFILTER,
 729                 .name          = "luma decimation filter",
 730                 .minimum       = 0,
 731                 .maximum       = 1,
 732                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 733         },{
 734                 .id            = V4L2_CID_PRIVATE_AGC_CRUSH,
 735                 .name          = "agc crush",
 736                 .minimum       = 0,
 737                 .maximum       = 1,
 738                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 739         },{
 740                 .id            = V4L2_CID_PRIVATE_VCR_HACK,
 741                 .name          = "vcr hack",
 742                 .minimum       = 0,
 743                 .maximum       = 1,
 744                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 745         },{
 746                 .id            = V4L2_CID_PRIVATE_WHITECRUSH_UPPER,
 747                 .name          = "whitecrush upper",
 748                 .minimum       = 0,
 749                 .maximum       = 255,
 750                 .step          = 1,
 751                 .default_value = 0xCF,
 752                 .type          = V4L2_CTRL_TYPE_INTEGER,
 753         },{
 754                 .id            = V4L2_CID_PRIVATE_WHITECRUSH_LOWER,
 755                 .name          = "whitecrush lower",
 756                 .minimum       = 0,
 757                 .maximum       = 255,
 758                 .step          = 1,
 759                 .default_value = 0x7F,
 760                 .type          = V4L2_CTRL_TYPE_INTEGER,
 761         },{
 762                 .id            = V4L2_CID_PRIVATE_UV_RATIO,
 763                 .name          = "uv ratio",
 764                 .minimum       = 0,
 765                 .maximum       = 100,
 766                 .step          = 1,
 767                 .default_value = 50,
 768                 .type          = V4L2_CTRL_TYPE_INTEGER,
 769         },{
 770                 .id            = V4L2_CID_PRIVATE_FULL_LUMA_RANGE,
 771                 .name          = "full luma range",
 772                 .minimum       = 0,
 773                 .maximum       = 1,
 774                 .type          = V4L2_CTRL_TYPE_BOOLEAN,
 775         },{
 776                 .id            = V4L2_CID_PRIVATE_CORING,
 777                 .name          = "coring",
 778                 .minimum       = 0,
 779                 .maximum       = 3,
 780                 .step          = 1,
 781                 .default_value = 0,
 782                 .type          = V4L2_CTRL_TYPE_INTEGER,
 783         }
 784
 785
 786
 787 };
 788
 789 static const struct v4l2_queryctrl *ctrl_by_id(int id)
 790 {
 791         int i;
 792
 793         for (i = 0; i < ARRAY_SIZE(bttv_ctls); i++)
 794                 if (bttv_ctls[i].id == id)
 795                         return bttv_ctls+i;
 796
 797         return NULL;
 798 }
 799
 800 /* ----------------------------------------------------------------------- */
 801 /* resource management                                                     */
 802
 803 /*
 804    RESOURCE_    allocated by                freed by
 805
 806    VIDEO_READ   bttv_read 1)                bttv_read 2)
 807
 808    VIDEO_STREAM VIDIOC_STREAMON             VIDIOC_STREAMOFF
 809                  VIDIOC_QBUF 1)              bttv_release
 810                  VIDIOCMCAPTURE 1)
 811
 812    OVERLAY       VIDIOCCAPTURE on            VIDIOCCAPTURE off
 813                  VIDIOC_OVERLAY on           VIDIOC_OVERLAY off
 814                  3)                          bttv_release
 815
 816    VBI           VIDIOC_STREAMON             VIDIOC_STREAMOFF
 817                  VIDIOC_QBUF 1)              bttv_release
 818                  bttv_read, bttv_poll 1) 4)
 819
 820    1) The resource must be allocated when we enter buffer prepare functions
 821       and remain allocated while buffers are in the DMA queue.
 822    2) This is a single frame read.
 823    3) VIDIOC_S_FBUF and VIDIOC_S_FMT (OVERLAY) still work when
 824       RESOURCE_OVERLAY is allocated.
 825    4) This is a continuous read, implies VIDIOC_STREAMON.
 826
 827    Note this driver permits video input and standard changes regardless if
 828    resources are allocated.
 829 */
 830
 831 #define VBI_RESOURCES (RESOURCE_VBI)
 832 #define VIDEO_RESOURCES (RESOURCE_VIDEO_READ | \
 833                          RESOURCE_VIDEO_STREAM | \
 834                          RESOURCE_OVERLAY)
 835
 836 static
 837 int check_alloc_btres(struct bttv *btv, struct bttv_fh *fh, int bit)
 838 {
 839         int xbits; /* mutual exclusive resources */
 840
 841         if (fh->resources & bit)
 842                 /* have it already allocated */
 843                 return 1;
 844
 845         xbits = bit;
 846         if (bit & (RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM))
 847                 xbits |= RESOURCE_VIDEO_READ | RESOURCE_VIDEO_STREAM;
 848
 849         /* is it free? */
 850         mutex_lock(&btv->lock);
 851         if (btv->resources & xbits) {
 852                 /* no, someone else uses it */
 853                 goto fail;
 854         }
 855
 856         if ((bit & VIDEO_RESOURCES)
 857             && 0 == (btv->resources & VIDEO_RESOURCES)) {
 858                 /* Do crop - use current, don't - use default parameters. */
 859                 __s32 top = btv->crop[!!fh->do_crop].rect.top;
 860
 861                 if (btv->vbi_end > top)
 862                         goto fail;
 863
 864                 /* We cannot capture the same line as video and VBI data.
 865                    Claim scan lines crop[].rect.top to bottom. */
 866                 btv->crop_start = top;
 867         } else if (bit & VBI_RESOURCES) {
 868                 __s32 end = fh->vbi_fmt.end;
 869
 870                 if (end > btv->crop_start)
 871                         goto fail;
 872
 873                 /* Claim scan lines above fh->vbi_fmt.end. */
 874                 btv->vbi_end = end;
 875         }
 876
 877         /* it's free, grab it */
 878         fh->resources  |= bit;
 879         btv->resources |= bit;
 880         mutex_unlock(&btv->lock);
 881         return 1;
 882
 883  fail:
 884         mutex_unlock(&btv->lock);
 885         return 0;
 886 }
 887
 888 static
 889 int check_btres(struct bttv_fh *fh, int bit)
 890 {
 891         return (fh->resources & bit);
 892 }
 893
 894 static
 895 int locked_btres(struct bttv *btv, int bit)
 896 {
 897         return (btv->resources & bit);
 898 }
 899
 900 /* Call with btv->lock down. */
 901 static void
 902 disclaim_vbi_lines(struct bttv *btv)
 903 {
 904         btv->vbi_end = 0;
 905 }
 906
 907 /* Call with btv->lock down. */
 908 static void
 909 disclaim_video_lines(struct bttv *btv)
 910 {
 911         const struct bttv_tvnorm *tvnorm;
 912         u8 crop;
 913
 914         tvnorm = &bttv_tvnorms[btv->tvnorm];
 915         btv->crop_start = tvnorm->cropcap.bounds.top
 916                 + tvnorm->cropcap.bounds.height;
 917
 918         /* VBI capturing ends at VDELAY, start of video capturing, no
 919            matter how many lines the VBI RISC program expects. When video
 920            capturing is off, it shall no longer "preempt" VBI capturing,
 921            so we set VDELAY to maximum. */
 922         crop = btread(BT848_E_CROP) | 0xc0;
 923         btwrite(crop, BT848_E_CROP);
 924         btwrite(0xfe, BT848_E_VDELAY_LO);
 925         btwrite(crop, BT848_O_CROP);
 926         btwrite(0xfe, BT848_O_VDELAY_LO);
 927 }
 928
 929 static
 930 void free_btres(struct bttv *btv, struct bttv_fh *fh, int bits)
 931 {
 932         if ((fh->resources & bits) != bits) {
 933                 /* trying to free ressources not allocated by us ... */
 934                 printk("bttv: BUG! (btres)\n");
 935         }
 936         mutex_lock(&btv->lock);
 937         fh->resources  &= ~bits;
 938         btv->resources &= ~bits;
 939
 940         bits = btv->resources;
 941
 942         if (0 == (bits & VIDEO_RESOURCES))
 943                 disclaim_video_lines(btv);
 944
 945         if (0 == (bits & VBI_RESOURCES))
 946                 disclaim_vbi_lines(btv);
 947
 948         mutex_unlock(&btv->lock);
 949 }
 950
 951 /* ----------------------------------------------------------------------- */
 952 /* If Bt848a or Bt849, use PLL for PAL/SECAM and crystal for NTSC          */
 953
 954 /* Frequency = (F_input / PLL_X) * PLL_I.PLL_F/PLL_C
 955    PLL_X = Reference pre-divider (0=1, 1=2)
 956    PLL_C = Post divider (0=6, 1=4)
 957    PLL_I = Integer input
 958    PLL_F = Fractional input
 959
 960    F_input = 28.636363 MHz:
 961    PAL (CLKx2 = 35.46895 MHz): PLL_X = 1, PLL_I = 0x0E, PLL_F = 0xDCF9, PLL_C = 0
 962 */
 963
 964 static void set_pll_freq(struct bttv *btv, unsigned int fin, unsigned int fout)
 965 {
 966         unsigned char fl, fh, fi;
 967
 968         /* prevent overflows */
 969         fin/=4;
 970         fout/=4;
 971
 972         fout*=12;
 973         fi=fout/fin;
 974
 975         fout=(fout%fin)*256;
 976         fh=fout/fin;
 977
 978         fout=(fout%fin)*256;
 979         fl=fout/fin;
 980
 981         btwrite(fl, BT848_PLL_F_LO);
 982         btwrite(fh, BT848_PLL_F_HI);
 983         btwrite(fi|BT848_PLL_X, BT848_PLL_XCI);
 984 }
 985
 986 static void set_pll(struct bttv *btv)
 987 {
 988         int i;
 989
 990         if (!btv->pll.pll_crystal)
 991                 return;
 992
 993         if (btv->pll.pll_ofreq == btv->pll.pll_current) {
 994                 dprintk("bttv%d: PLL: no change required\n",btv->c.nr);
 995                 return;
 996         }
 997
 998         if (btv->pll.pll_ifreq == btv->pll.pll_ofreq) {
 999                 /* no PLL needed */
1000                 if (btv->pll.pll_current == 0)
1001                         return;
1002                 bttv_printk(KERN_INFO "bttv%d: PLL can sleep, using XTAL (%d).\n",
1003                         btv->c.nr,btv->pll.pll_ifreq);
1004                 btwrite(0x00,BT848_TGCTRL);
1005                 btwrite(0x00,BT848_PLL_XCI);
1006                 btv->pll.pll_current = 0;
1007                 return;
1008         }
1009
1010         bttv_printk(KERN_INFO "bttv%d: PLL: %d => %d ",btv->c.nr,
1011                 btv->pll.pll_ifreq, btv->pll.pll_ofreq);
1012         set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq);
1013
1014         for (i=0; i<10; i++) {
1015                 /*  Let other people run while the PLL stabilizes */
1016                 bttv_printk(".");
1017                 msleep(10);
1018
1019                 if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
1020                         btwrite(0,BT848_DSTATUS);
1021                 } else {
1022                         btwrite(0x08,BT848_TGCTRL);
1023                         btv->pll.pll_current = btv->pll.pll_ofreq;
1024                         bttv_printk(" ok\n");
1025                         return;
1026                 }
1027         }
1028         btv->pll.pll_current = -1;
1029         bttv_printk("failed\n");
1030         return;
1031 }
1032
1033 /* used to switch between the bt848's analog/digital video capture modes */
1034 static void bt848A_set_timing(struct bttv *btv)
1035 {
1036         int i, len;
1037         int table_idx = bttv_tvnorms[btv->tvnorm].sram;
1038         int fsc       = bttv_tvnorms[btv->tvnorm].Fsc;
1039
1040         if (UNSET == bttv_tvcards[btv->c.type].muxsel[btv->input]) {
1041                 dprintk("bttv%d: load digital timing table (table_idx=%d)\n",
1042                         btv->c.nr,table_idx);
1043
1044                 /* timing change...reset timing generator address */
1045                 btwrite(0x00, BT848_TGCTRL);
1046                 btwrite(0x02, BT848_TGCTRL);
1047                 btwrite(0x00, BT848_TGCTRL);
1048
1049                 len=SRAM_Table[table_idx][0];
1050                 for(i = 1; i <= len; i++)
1051                         btwrite(SRAM_Table[table_idx][i],BT848_TGLB);
1052                 btv->pll.pll_ofreq = 27000000;
1053
1054                 set_pll(btv);
1055                 btwrite(0x11, BT848_TGCTRL);
1056                 btwrite(0x41, BT848_DVSIF);
1057         } else {
1058                 btv->pll.pll_ofreq = fsc;
1059                 set_pll(btv);
1060                 btwrite(0x0, BT848_DVSIF);
1061         }
1062 }
1063
1064 /* ----------------------------------------------------------------------- */
1065
1066 static void bt848_bright(struct bttv *btv, int bright)
1067 {
1068         int value;
1069
1070         // printk("bttv: set bright: %d\n",bright); // DEBUG
1071         btv->bright = bright;
1072
1073         /* We want -128 to 127 we get 0-65535 */
1074         value = (bright >> 8) - 128;
1075         btwrite(value & 0xff, BT848_BRIGHT);
1076 }
1077
1078 static void bt848_hue(struct bttv *btv, int hue)
1079 {
1080         int value;
1081
1082         btv->hue = hue;
1083
1084         /* -128 to 127 */
1085         value = (hue >> 8) - 128;
1086         btwrite(value & 0xff, BT848_HUE);
1087 }
1088
1089 static void bt848_contrast(struct bttv *btv, int cont)
1090 {
1091         int value,hibit;
1092
1093         btv->contrast = cont;
1094
1095         /* 0-511 */
1096         value = (cont  >> 7);
1097         hibit = (value >> 6) & 4;
1098         btwrite(value & 0xff, BT848_CONTRAST_LO);
1099         btaor(hibit, ~4, BT848_E_CONTROL);
1100         btaor(hibit, ~4, BT848_O_CONTROL);
1101 }
1102
1103 static void bt848_sat(struct bttv *btv, int color)
1104 {
1105         int val_u,val_v,hibits;
1106
1107         btv->saturation = color;
1108
1109         /* 0-511 for the color */
1110         val_u   = ((color * btv->opt_uv_ratio) / 50) >> 7;
1111         val_v   = (((color * (100 - btv->opt_uv_ratio) / 50) >>7)*180L)/254;
1112         hibits  = (val_u >> 7) & 2;
1113         hibits |= (val_v >> 8) & 1;
1114         btwrite(val_u & 0xff, BT848_SAT_U_LO);
1115         btwrite(val_v & 0xff, BT848_SAT_V_LO);
1116         btaor(hibits, ~3, BT848_E_CONTROL);
1117         btaor(hibits, ~3, BT848_O_CONTROL);
1118 }
1119
1120 /* ----------------------------------------------------------------------- */
1121
1122 static int
1123 video_mux(struct bttv *btv, unsigned int input)
1124 {
1125         int mux,mask2;
1126
1127         if (input >= bttv_tvcards[btv->c.type].video_inputs)
1128                 return -EINVAL;
1129
1130         /* needed by RemoteVideo MX */
1131         mask2 = bttv_tvcards[btv->c.type].gpiomask2;
1132         if (mask2)
1133                 gpio_inout(mask2,mask2);
1134
1135         if (input == btv->svhs)  {
1136                 btor(BT848_CONTROL_COMP, BT848_E_CONTROL);
1137                 btor(BT848_CONTROL_COMP, BT848_O_CONTROL);
1138         } else {
1139                 btand(~BT848_CONTROL_COMP, BT848_E_CONTROL);
1140                 btand(~BT848_CONTROL_COMP, BT848_O_CONTROL);
1141         }
1142         mux = bttv_tvcards[btv->c.type].muxsel[input] & 3;
1143         btaor(mux<<5, ~(3<<5), BT848_IFORM);
1144         dprintk(KERN_DEBUG "bttv%d: video mux: input=%d mux=%d\n",
1145                 btv->c.nr,input,mux);
1146
1147         /* card specific hook */
1148         if(bttv_tvcards[btv->c.type].muxsel_hook)
1149                 bttv_tvcards[btv->c.type].muxsel_hook (btv, input);
1150         return 0;
1151 }
1152
1153 static char *audio_modes[] = {
1154         "audio: tuner", "audio: radio", "audio: extern",
1155         "audio: intern", "audio: mute"
1156 };
1157
1158 static int
1159 audio_mux(struct bttv *btv, int input, int mute)
1160 {
1161         int gpio_val, signal;
1162         struct v4l2_control ctrl;
1163         struct i2c_client *c;
1164
1165         gpio_inout(bttv_tvcards[btv->c.type].gpiomask,
1166                    bttv_tvcards[btv->c.type].gpiomask);
1167         signal = btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC;
1168
1169         btv->mute = mute;
1170         btv->audio = input;
1171
1172         /* automute */
1173         mute = mute || (btv->opt_automute && !signal && !btv->radio_user);
1174
1175         if (mute)
1176                 gpio_val = bttv_tvcards[btv->c.type].gpiomute;
1177         else
1178                 gpio_val = bttv_tvcards[btv->c.type].gpiomux[input];
1179
1180         gpio_bits(bttv_tvcards[btv->c.type].gpiomask, gpio_val);
1181         if (bttv_gpio)
1182                 bttv_gpio_tracking(btv, audio_modes[mute ? 4 : input]);
1183         if (in_interrupt())
1184                 return 0;
1185
1186         ctrl.id = V4L2_CID_AUDIO_MUTE;
1187         ctrl.value = btv->mute;
1188         bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, &ctrl);
1189         c = btv->i2c_msp34xx_client;
1190         if (c) {
1191                 struct v4l2_routing route;
1192
1193                 /* Note: the inputs tuner/radio/extern/intern are translated
1194                    to msp routings. This assumes common behavior for all msp3400
1195                    based TV cards. When this assumption fails, then the
1196                    specific MSP routing must be added to the card table.
1197                    For now this is sufficient. */
1198                 switch (input) {
1199                 case TVAUDIO_INPUT_RADIO:
1200                         route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1201                                     MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1202                         break;
1203                 case TVAUDIO_INPUT_EXTERN:
1204                         route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
1205                                     MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1206                         break;
1207                 case TVAUDIO_INPUT_INTERN:
1208                         /* Yes, this is the same input as for RADIO. I doubt
1209                            if this is ever used. The only board with an INTERN
1210                            input is the BTTV_BOARD_AVERMEDIA98. I wonder how
1211                            that was tested. My guess is that the whole INTERN
1212                            input does not work. */
1213                         route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
1214                                     MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
1215                         break;
1216                 case TVAUDIO_INPUT_TUNER:
1217                 default:
1218                         /* This is the only card that uses TUNER2, and afaik,
1219                            is the only difference between the VOODOOTV_FM
1220                            and VOODOOTV_200 */
1221                         if (btv->c.type == BTTV_BOARD_VOODOOTV_200)
1222                                 route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER2, \
1223                                         MSP_DSP_IN_TUNER, MSP_DSP_IN_TUNER);
1224                         else
1225                                 route.input = MSP_INPUT_DEFAULT;
1226                         break;
1227                 }
1228                 route.output = MSP_OUTPUT_DEFAULT;
1229                 c->driver->command(c, VIDIOC_INT_S_AUDIO_ROUTING, &route);
1230         }
1231         c = btv->i2c_tvaudio_client;
1232         if (c) {
1233                 struct v4l2_routing route;
1234
1235                 route.input = input;
1236                 route.output = 0;
1237                 c->driver->command(c, VIDIOC_INT_S_AUDIO_ROUTING, &route);
1238         }
1239         return 0;
1240 }
1241
1242 static inline int
1243 audio_mute(struct bttv *btv, int mute)
1244 {
1245         return audio_mux(btv, btv->audio, mute);
1246 }
1247
1248 static inline int
1249 audio_input(struct bttv *btv, int input)
1250 {
1251         return audio_mux(btv, input, btv->mute);
1252 }
1253
1254 static void
1255 bttv_crop_calc_limits(struct bttv_crop *c)
1256 {
1257         /* Scale factor min. 1:1, max. 16:1. Min. image size
1258            48 x 32. Scaled width must be a multiple of 4. */
1259
1260         if (1) {
1261                 /* For bug compatibility with VIDIOCGCAP and image
1262                    size checks in earlier driver versions. */
1263                 c->min_scaled_width = 48;
1264                 c->min_scaled_height = 32;
1265         } else {
1266                 c->min_scaled_width =
1267                         (max(48, c->rect.width >> 4) + 3) & ~3;
1268                 c->min_scaled_height =
1269                         max(32, c->rect.height >> 4);
1270         }
1271
1272         c->max_scaled_width  = c->rect.width & ~3;
1273         c->max_scaled_height = c->rect.height;
1274 }
1275
1276 static void
1277 bttv_crop_reset(struct bttv_crop *c, int norm)
1278 {
1279         c->rect = bttv_tvnorms[norm].cropcap.defrect;
1280         bttv_crop_calc_limits(c);
1281 }
1282
1283 /* Call with btv->lock down. */
1284 static int
1285 set_tvnorm(struct bttv *btv, unsigned int norm)
1286 {
1287         const struct bttv_tvnorm *tvnorm;
1288         v4l2_std_id id;
1289
1290         if (norm < 0 || norm >= BTTV_TVNORMS)
1291                 return -EINVAL;
1292
1293         tvnorm = &bttv_tvnorms[norm];
1294
1295         if (btv->tvnorm < 0 ||
1296             btv->tvnorm >= BTTV_TVNORMS ||
1297             0 != memcmp(&bttv_tvnorms[btv->tvnorm].cropcap,
1298                         &tvnorm->cropcap,
1299                         sizeof (tvnorm->cropcap))) {
1300                 bttv_crop_reset(&btv->crop[0], norm);
1301                 btv->crop[1] = btv->crop[0]; /* current = default */
1302
1303                 if (0 == (btv->resources & VIDEO_RESOURCES)) {
1304                         btv->crop_start = tvnorm->cropcap.bounds.top
1305                                 + tvnorm->cropcap.bounds.height;
1306                 }
1307         }
1308
1309         btv->tvnorm = norm;
1310
1311         btwrite(tvnorm->adelay, BT848_ADELAY);
1312         btwrite(tvnorm->bdelay, BT848_BDELAY);
1313         btaor(tvnorm->iform,~(BT848_IFORM_NORM|BT848_IFORM_XTBOTH),
1314               BT848_IFORM);
1315         btwrite(tvnorm->vbipack, BT848_VBI_PACK_SIZE);
1316         btwrite(1, BT848_VBI_PACK_DEL);
1317         bt848A_set_timing(btv);
1318
1319         switch (btv->c.type) {
1320         case BTTV_BOARD_VOODOOTV_FM:
1321         case BTTV_BOARD_VOODOOTV_200:
1322                 bttv_tda9880_setnorm(btv,norm);
1323                 break;
1324         }
1325         id = tvnorm->v4l2_id;
1326         bttv_call_i2c_clients(btv, VIDIOC_S_STD, &id);
1327
1328         return 0;
1329 }
1330
1331 /* Call with btv->lock down. */
1332 static void
1333 set_input(struct bttv *btv, unsigned int input, unsigned int norm)
1334 {
1335         unsigned long flags;
1336
1337         btv->input = input;
1338         if (irq_iswitch) {
1339                 spin_lock_irqsave(&btv->s_lock,flags);
1340                 if (btv->curr.frame_irq) {
1341                         /* active capture -> delayed input switch */
1342                         btv->new_input = input;
1343                 } else {
1344                         video_mux(btv,input);
1345                 }
1346                 spin_unlock_irqrestore(&btv->s_lock,flags);
1347         } else {
1348                 video_mux(btv,input);
1349         }
1350         audio_input(btv,(input == bttv_tvcards[btv->c.type].tuner ?
1351                        TVAUDIO_INPUT_TUNER : TVAUDIO_INPUT_EXTERN));
1352         set_tvnorm(btv, norm);
1353 }
1354
1355 static void init_irqreg(struct bttv *btv)
1356 {
1357         /* clear status */
1358         btwrite(0xfffffUL, BT848_INT_STAT);
1359
1360         if (bttv_tvcards[btv->c.type].no_video) {
1361                 /* i2c only */
1362                 btwrite(BT848_INT_I2CDONE,
1363                         BT848_INT_MASK);
1364         } else {
1365                 /* full video */
1366                 btwrite((btv->triton1)  |
1367                         (btv->gpioirq ? BT848_INT_GPINT : 0) |
1368                         BT848_INT_SCERR |
1369                         (fdsr ? BT848_INT_FDSR : 0) |
1370                         BT848_INT_RISCI|BT848_INT_OCERR|BT848_INT_VPRES|
1371                         BT848_INT_FMTCHG|BT848_INT_HLOCK|
1372                         BT848_INT_I2CDONE,
1373                         BT848_INT_MASK);
1374         }
1375 }
1376
1377 static void init_bt848(struct bttv *btv)
1378 {
1379         int val;
1380
1381         if (bttv_tvcards[btv->c.type].no_video) {
1382                 /* very basic init only */
1383                 init_irqreg(btv);
1384                 return;
1385         }
1386
1387         btwrite(0x00, BT848_CAP_CTL);
1388         btwrite(BT848_COLOR_CTL_GAMMA, BT848_COLOR_CTL);
1389         btwrite(BT848_IFORM_XTAUTO | BT848_IFORM_AUTO, BT848_IFORM);
1390
1391         /* set planar and packed mode trigger points and         */
1392         /* set rising edge of inverted GPINTR pin as irq trigger */
1393         btwrite(BT848_GPIO_DMA_CTL_PKTP_32|
1394                 BT848_GPIO_DMA_CTL_PLTP1_16|
1395                 BT848_GPIO_DMA_CTL_PLTP23_16|
1396                 BT848_GPIO_DMA_CTL_GPINTC|
1397                 BT848_GPIO_DMA_CTL_GPINTI,
1398                 BT848_GPIO_DMA_CTL);
1399
1400         val = btv->opt_chroma_agc ? BT848_SCLOOP_CAGC : 0;
1401         btwrite(val, BT848_E_SCLOOP);
1402         btwrite(val, BT848_O_SCLOOP);
1403
1404         btwrite(0x20, BT848_E_VSCALE_HI);
1405         btwrite(0x20, BT848_O_VSCALE_HI);
1406         btwrite(BT848_ADC_RESERVED | (btv->opt_adc_crush ? BT848_ADC_CRUSH : 0),
1407                 BT848_ADC);
1408
1409         btwrite(whitecrush_upper, BT848_WC_UP);
1410         btwrite(whitecrush_lower, BT848_WC_DOWN);
1411
1412         if (btv->opt_lumafilter) {
1413                 btwrite(0, BT848_E_CONTROL);
1414                 btwrite(0, BT848_O_CONTROL);
1415         } else {
1416                 btwrite(BT848_CONTROL_LDEC, BT848_E_CONTROL);
1417                 btwrite(BT848_CONTROL_LDEC, BT848_O_CONTROL);
1418         }
1419
1420         bt848_bright(btv,   btv->bright);
1421         bt848_hue(btv,      btv->hue);
1422         bt848_contrast(btv, btv->contrast);
1423         bt848_sat(btv,      btv->saturation);
1424
1425         /* interrupt */
1426         init_irqreg(btv);
1427 }
1428
1429 static void bttv_reinit_bt848(struct bttv *btv)
1430 {
1431         unsigned long flags;
1432
1433         if (bttv_verbose)
1434                 printk(KERN_INFO "bttv%d: reset, reinitialize\n",btv->c.nr);
1435         spin_lock_irqsave(&btv->s_lock,flags);
1436         btv->errors=0;
1437         bttv_set_dma(btv,0);
1438         spin_unlock_irqrestore(&btv->s_lock,flags);
1439
1440         init_bt848(btv);
1441         btv->pll.pll_current = -1;
1442         set_input(btv, btv->input, btv->tvnorm);
1443 }
1444
1445 static int bttv_g_ctrl(struct file *file, void *priv,
1446                                         struct v4l2_control *c)
1447 {
1448         struct bttv_fh *fh = priv;
1449         struct bttv *btv = fh->btv;
1450
1451         switch (c->id) {
1452         case V4L2_CID_BRIGHTNESS:
1453                 c->value = btv->bright;
1454                 break;
1455         case V4L2_CID_HUE:
1456                 c->value = btv->hue;
1457                 break;
1458         case V4L2_CID_CONTRAST:
1459                 c->value = btv->contrast;
1460                 break;
1461         case V4L2_CID_SATURATION:
1462                 c->value = btv->saturation;
1463                 break;
1464
1465         case V4L2_CID_AUDIO_MUTE:
1466         case V4L2_CID_AUDIO_VOLUME:
1467         case V4L2_CID_AUDIO_BALANCE:
1468         case V4L2_CID_AUDIO_BASS:
1469         case V4L2_CID_AUDIO_TREBLE:
1470                 bttv_call_i2c_clients(btv, VIDIOC_G_CTRL, c);
1471                 break;
1472
1473         case V4L2_CID_PRIVATE_CHROMA_AGC:
1474                 c->value = btv->opt_chroma_agc;
1475                 break;
1476         case V4L2_CID_PRIVATE_COMBFILTER:
1477                 c->value = btv->opt_combfilter;
1478                 break;
1479         case V4L2_CID_PRIVATE_LUMAFILTER:
1480                 c->value = btv->opt_lumafilter;
1481                 break;
1482         case V4L2_CID_PRIVATE_AUTOMUTE:
1483                 c->value = btv->opt_automute;
1484                 break;
1485         case V4L2_CID_PRIVATE_AGC_CRUSH:
1486                 c->value = btv->opt_adc_crush;
1487                 break;
1488         case V4L2_CID_PRIVATE_VCR_HACK:
1489                 c->value = btv->opt_vcr_hack;
1490                 break;
1491         case V4L2_CID_PRIVATE_WHITECRUSH_UPPER:
1492                 c->value = btv->opt_whitecrush_upper;
1493                 break;
1494         case V4L2_CID_PRIVATE_WHITECRUSH_LOWER:
1495                 c->value = btv->opt_whitecrush_lower;
1496                 break;
1497         case V4L2_CID_PRIVATE_UV_RATIO:
1498                 c->value = btv->opt_uv_ratio;
1499                 break;
1500         case V4L2_CID_PRIVATE_FULL_LUMA_RANGE:
1501                 c->value = btv->opt_full_luma_range;
1502                 break;
1503         case V4L2_CID_PRIVATE_CORING:
1504                 c->value = btv->opt_coring;
1505                 break;
1506         default:
1507                 return -EINVAL;
1508         }
1509         return 0;
1510 }
1511
1512 static int bttv_s_ctrl(struct file *file, void *f,
1513                                         struct v4l2_control *c)
1514 {
1515         int err;
1516         int val;
1517         struct bttv_fh *fh = f;
1518         struct bttv *btv = fh->btv;
1519
1520         err = v4l2_prio_check(&btv->prio, &fh->prio);
1521         if (0 != err)
1522                 return err;
1523
1524         switch (c->id) {
1525         case V4L2_CID_BRIGHTNESS:
1526                 bt848_bright(btv, c->value);
1527                 break;
1528         case V4L2_CID_HUE:
1529                 bt848_hue(btv, c->value);
1530                 break;
1531         case V4L2_CID_CONTRAST:
1532                 bt848_contrast(btv, c->value);
1533                 break;
1534         case V4L2_CID_SATURATION:
1535                 bt848_sat(btv, c->value);
1536                 break;
1537         case V4L2_CID_AUDIO_MUTE:
1538                 audio_mute(btv, c->value);
1539                 /* fall through */
1540         case V4L2_CID_AUDIO_VOLUME:
1541                 if (btv->volume_gpio)
1542                         btv->volume_gpio(btv, c->value);
1543
1544                 bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, c);
1545                 break;
1546         case V4L2_CID_AUDIO_BALANCE:
1547         case V4L2_CID_AUDIO_BASS:
1548         case V4L2_CID_AUDIO_TREBLE:
1549                 bttv_call_i2c_clients(btv, VIDIOC_S_CTRL, c);
1550                 break;
1551
1552         case V4L2_CID_PRIVATE_CHROMA_AGC:
1553                 btv->opt_chroma_agc = c->value;
1554                 val = btv->opt_chroma_agc ? BT848_SCLOOP_CAGC : 0;
1555                 btwrite(val, BT848_E_SCLOOP);
1556                 btwrite(val, BT848_O_SCLOOP);
1557                 break;
1558         case V4L2_CID_PRIVATE_COMBFILTER:
1559                 btv->opt_combfilter = c->value;
1560                 break;
1561         case V4L2_CID_PRIVATE_LUMAFILTER:
1562                 btv->opt_lumafilter = c->value;
1563                 if (btv->opt_lumafilter) {
1564                         btand(~BT848_CONTROL_LDEC, BT848_E_CONTROL);
1565                         btand(~BT848_CONTROL_LDEC, BT848_O_CONTROL);
1566                 } else {
1567                         btor(BT848_CONTROL_LDEC, BT848_E_CONTROL);
1568                         btor(BT848_CONTROL_LDEC, BT848_O_CONTROL);
1569                 }
1570                 break;
1571         case V4L2_CID_PRIVATE_AUTOMUTE:
1572                 btv->opt_automute = c->value;
1573                 break;
1574         case V4L2_CID_PRIVATE_AGC_CRUSH:
1575                 btv->opt_adc_crush = c->value;
1576                 btwrite(BT848_ADC_RESERVED |
1577                                 (btv->opt_adc_crush ? BT848_ADC_CRUSH : 0),
1578                                 BT848_ADC);
1579                 break;
1580         case V4L2_CID_PRIVATE_VCR_HACK:
1581                 btv->opt_vcr_hack = c->value;
1582                 break;
1583         case V4L2_CID_PRIVATE_WHITECRUSH_UPPER:
1584                 btv->opt_whitecrush_upper = c->value;
1585                 btwrite(c->value, BT848_WC_UP);
1586                 break;
1587         case V4L2_CID_PRIVATE_WHITECRUSH_LOWER:
1588                 btv->opt_whitecrush_lower = c->value;
1589                 btwrite(c->value, BT848_WC_DOWN);
1590                 break;
1591         case V4L2_CID_PRIVATE_UV_RATIO:
1592                 btv->opt_uv_ratio = c->value;
1593                 bt848_sat(btv, btv->saturation);
1594                 break;
1595         case V4L2_CID_PRIVATE_FULL_LUMA_RANGE:
1596                 btv->opt_full_luma_range = c->value;
1597                 btaor((c->value<<7), ~BT848_OFORM_RANGE, BT848_OFORM);
1598                 break;
1599         case V4L2_CID_PRIVATE_CORING:
1600                 btv->opt_coring = c->value;
1601                 btaor((c->value<<5), ~BT848_OFORM_CORE32, BT848_OFORM);
1602                 break;
1603         default:
1604                 return -EINVAL;
1605         }
1606         return 0;
1607 }
1608
1609 /* ----------------------------------------------------------------------- */
1610
1611 void bttv_gpio_tracking(struct bttv *btv, char *comment)
1612 {
1613         unsigned int outbits, data;
1614         outbits = btread(BT848_GPIO_OUT_EN);
1615         data    = btread(BT848_GPIO_DATA);
1616         printk(KERN_DEBUG "bttv%d: gpio: en=%08x, out=%08x in=%08x [%s]\n",
1617                btv->c.nr,outbits,data & outbits, data & ~outbits, comment);
1618 }
1619
1620 static void bttv_field_count(struct bttv *btv)
1621 {
1622         int need_count = 0;
1623
1624         if (btv->users)
1625                 need_count++;
1626
1627         if (need_count) {
1628                 /* start field counter */
1629                 btor(BT848_INT_VSYNC,BT848_INT_MASK);
1630         } else {
1631                 /* stop field counter */
1632                 btand(~BT848_INT_VSYNC,BT848_INT_MASK);
1633                 btv->field_count = 0;
1634         }
1635 }
1636
1637 static const struct bttv_format*
1638 format_by_fourcc(int fourcc)
1639 {
1640         unsigned int i;
1641
1642         for (i = 0; i < FORMATS; i++) {
1643                 if (-1 == formats[i].fourcc)
1644                         continue;
1645                 if (formats[i].fourcc == fourcc)
1646                         return formats+i;
1647         }
1648         return NULL;
1649 }
1650
1651 /* ----------------------------------------------------------------------- */
1652 /* misc helpers                                                            */
1653
1654 static int
1655 bttv_switch_overlay(struct bttv *btv, struct bttv_fh *fh,
1656                     struct bttv_buffer *new)
1657 {
1658         struct bttv_buffer *old;
1659         unsigned long flags;
1660         int retval = 0;
1661
1662         dprintk("switch_overlay: enter [new=%p]\n",new);
1663         if (new)
1664                 new->vb.state = VIDEOBUF_DONE;
1665         spin_lock_irqsave(&btv->s_lock,flags);
1666         old = btv->screen;
1667         btv->screen = new;
1668         btv->loop_irq |= 1;
1669         bttv_set_dma(btv, 0x03);
1670         spin_unlock_irqrestore(&btv->s_lock,flags);
1671         if (NULL != old) {
1672                 dprintk("switch_overlay: old=%p state is %d\n",old,old->vb.state);
1673                 bttv_dma_free(&fh->cap,btv, old);
1674                 kfree(old);
1675         }
1676         if (NULL == new)
1677                 free_btres(btv,fh,RESOURCE_OVERLAY);
1678         dprintk("switch_overlay: done\n");
1679         return retval;
1680 }
1681
1682 /* ----------------------------------------------------------------------- */
1683 /* video4linux (1) interface                                               */
1684
1685 static int bttv_prepare_buffer(struct videobuf_queue *q,struct bttv *btv,
1686                                struct bttv_buffer *buf,
1687                                const struct bttv_format *fmt,
1688                                unsigned int width, unsigned int height,
1689                                enum v4l2_field field)
1690 {
1691         struct bttv_fh *fh = q->priv_data;
1692         int redo_dma_risc = 0;
1693         struct bttv_crop c;
1694         int norm;
1695         int rc;
1696
1697         /* check settings */
1698         if (NULL == fmt)
1699                 return -EINVAL;
1700         if (fmt->btformat == BT848_COLOR_FMT_RAW) {
1701                 width  = RAW_BPL;
1702                 height = RAW_LINES*2;
1703                 if (width*height > buf->vb.bsize)
1704                         return -EINVAL;
1705                 buf->vb.size = buf->vb.bsize;
1706
1707                 /* Make sure tvnorm and vbi_end remain consistent
1708                    until we're done. */
1709                 mutex_lock(&btv->lock);
1710
1711                 norm = btv->tvnorm;
1712
1713                 /* In this mode capturing always starts at defrect.top
1714                    (default VDELAY), ignoring cropping parameters. */
1715                 if (btv->vbi_end > bttv_tvnorms[norm].cropcap.defrect.top) {
1716                         mutex_unlock(&btv->lock);
1717                         return -EINVAL;
1718                 }
1719
1720                 mutex_unlock(&btv->lock);
1721
1722                 c.rect = bttv_tvnorms[norm].cropcap.defrect;
1723         } else {
1724                 mutex_lock(&btv->lock);
1725
1726                 norm = btv->tvnorm;
1727                 c = btv->crop[!!fh->do_crop];
1728
1729                 mutex_unlock(&btv->lock);
1730
1731                 if (width < c.min_scaled_width ||
1732                     width > c.max_scaled_width ||
1733                     height < c.min_scaled_height)
1734                         return -EINVAL;
1735
1736                 switch (field) {
1737                 case V4L2_FIELD_TOP:
1738                 case V4L2_FIELD_BOTTOM:
1739                 case V4L2_FIELD_ALTERNATE:
1740                         /* btv->crop counts frame lines. Max. scale
1741                            factor is 16:1 for frames, 8:1 for fields. */
1742                         if (height * 2 > c.max_scaled_height)
1743                                 return -EINVAL;
1744                         break;
1745
1746                 default:
1747                         if (height > c.max_scaled_height)
1748                                 return -EINVAL;
1749                         break;
1750                 }
1751
1752                 buf->vb.size = (width * height * fmt->depth) >> 3;
1753                 if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
1754                         return -EINVAL;
1755         }
1756
1757         /* alloc + fill struct bttv_buffer (if changed) */
1758         if (buf->vb.width != width || buf->vb.height != height ||
1759             buf->vb.field != field ||
1760             buf->tvnorm != norm || buf->fmt != fmt ||
1761             buf->crop.top != c.rect.top ||
1762             buf->crop.left != c.rect.left ||
1763             buf->crop.width != c.rect.width ||
1764             buf->crop.height != c.rect.height) {
1765                 buf->vb.width  = width;
1766                 buf->vb.height = height;
1767                 buf->vb.field  = field;
1768                 buf->tvnorm    = norm;
1769                 buf->fmt       = fmt;
1770                 buf->crop      = c.rect;
1771                 redo_dma_risc = 1;
1772         }
1773
1774         /* alloc risc memory */
1775         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
1776                 redo_dma_risc = 1;
1777                 if (0 != (rc = videobuf_iolock(q,&buf->vb,&btv->fbuf)))
1778                         goto fail;
1779         }
1780
1781         if (redo_dma_risc)
1782                 if (0 != (rc = bttv_buffer_risc(btv,buf)))
1783                         goto fail;
1784
1785         buf->vb.state = VIDEOBUF_PREPARED;
1786         return 0;
1787
1788  fail:
1789         bttv_dma_free(q,btv,buf);
1790         return rc;
1791 }
1792
1793 static int
1794 buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
1795 {
1796         struct bttv_fh *fh = q->priv_data;
1797
1798         *size = fh->fmt->depth*fh->width*fh->height >> 3;
1799         if (0 == *count)
1800                 *count = gbuffers;
1801         while (*size * *count > gbuffers * gbufsize)
1802                 (*count)--;
1803         return 0;
1804 }
1805
1806 static int
1807 buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
1808                enum v4l2_field field)
1809 {
1810         struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1811         struct bttv_fh *fh = q->priv_data;
1812
1813         return bttv_prepare_buffer(q,fh->btv, buf, fh->fmt,
1814                                    fh->width, fh->height, field);
1815 }
1816
1817 static void
1818 buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
1819 {
1820         struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1821         struct bttv_fh *fh = q->priv_data;
1822         struct bttv    *btv = fh->btv;
1823
1824         buf->vb.state = VIDEOBUF_QUEUED;
1825         list_add_tail(&buf->vb.queue,&btv->capture);
1826         if (!btv->curr.frame_irq) {
1827                 btv->loop_irq |= 1;
1828                 bttv_set_dma(btv, 0x03);
1829         }
1830 }
1831
1832 static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
1833 {
1834         struct bttv_buffer *buf = container_of(vb,struct bttv_buffer,vb);
1835         struct bttv_fh *fh = q->priv_data;
1836
1837         bttv_dma_free(q,fh->btv,buf);
1838 }
1839
1840 static struct videobuf_queue_ops bttv_video_qops = {
1841         .buf_setup    = buffer_setup,
1842         .buf_prepare  = buffer_prepare,
1843         .buf_queue    = buffer_queue,
1844         .buf_release  = buffer_release,
1845 };
1846
1847 static int bttv_s_std(struct file *file, void *priv, v4l2_std_id *id)
1848 {
1849         struct bttv_fh *fh  = priv;
1850         struct bttv *btv = fh->btv;
1851         unsigned int i;
1852         int err;
1853
1854         err = v4l2_prio_check(&btv->prio, &fh->prio);
1855         if (0 != err)
1856                 return err;
1857
1858         for (i = 0; i < BTTV_TVNORMS; i++)
1859                 if (*id & bttv_tvnorms[i].v4l2_id)
1860                         break;
1861         if (i == BTTV_TVNORMS)
1862                 return -EINVAL;
1863
1864         mutex_lock(&btv->lock);
1865         set_tvnorm(btv, i);
1866         mutex_unlock(&btv->lock);
1867
1868         return 0;
1869 }
1870
1871 static int bttv_querystd(struct file *file, void *f, v4l2_std_id *id)
1872 {
1873         struct bttv_fh *fh = f;
1874         struct bttv *btv = fh->btv;
1875
1876         if (btread(BT848_DSTATUS) & BT848_DSTATUS_NUML)
1877                 *id = V4L2_STD_625_50;
1878         else
1879                 *id = V4L2_STD_525_60;
1880         return 0;
1881 }
1882
1883 static int bttv_enum_input(struct file *file, void *priv,
1884                                         struct v4l2_input *i)
1885 {
1886         struct bttv_fh *fh = priv;
1887         struct bttv *btv = fh->btv;
1888         unsigned int n;
1889
1890         n = i->index;
1891
1892         if (n >= bttv_tvcards[btv->c.type].video_inputs)
1893                 return -EINVAL;
1894
1895         memset(i, 0, sizeof(*i));
1896
1897         i->index    = n;
1898         i->type     = V4L2_INPUT_TYPE_CAMERA;
1899         i->audioset = 1;
1900
1901         if (i->index == bttv_tvcards[btv->c.type].tuner) {
1902                 sprintf(i->name, "Television");
1903                 i->type  = V4L2_INPUT_TYPE_TUNER;
1904                 i->tuner = 0;
1905         } else if (i->index == btv->svhs) {
1906                 sprintf(i->name, "S-Video");
1907         } else {
1908                 sprintf(i->name, "Composite%d", i->index);
1909         }
1910
1911         if (i->index == btv->input) {
1912                 __u32 dstatus = btread(BT848_DSTATUS);
1913                 if (0 == (dstatus & BT848_DSTATUS_PRES))
1914                         i->status |= V4L2_IN_ST_NO_SIGNAL;
1915                 if (0 == (dstatus & BT848_DSTATUS_HLOC))
1916                         i->status |= V4L2_IN_ST_NO_H_LOCK;
1917         }
1918
1919         for (n = 0; n < BTTV_TVNORMS; n++)
1920                 i->std |= bttv_tvnorms[n].v4l2_id;
1921
1922         return 0;
1923 }
1924
1925 static int bttv_g_input(struct file *file, void *priv, unsigned int *i)
1926 {
1927         struct bttv_fh *fh = priv;
1928         struct bttv *btv = fh->btv;
1929
1930         *i = btv->input;
1931         return 0;
1932 }
1933
1934 static int bttv_s_input(struct file *file, void *priv, unsigned int i)
1935 {
1936         struct bttv_fh *fh  = priv;
1937         struct bttv *btv = fh->btv;
1938
1939         int err;
1940
1941         err = v4l2_prio_check(&btv->prio, &fh->prio);
1942         if (0 != err)
1943                 return err;
1944
1945         if (i > bttv_tvcards[btv->c.type].video_inputs)
1946                 return -EINVAL;
1947
1948         mutex_lock(&btv->lock);
1949         set_input(btv, i, btv->tvnorm);
1950         mutex_unlock(&btv->lock);
1951         return 0;
1952 }
1953
1954 static int bttv_s_tuner(struct file *file, void *priv,
1955                                         struct v4l2_tuner *t)
1956 {
1957         struct bttv_fh *fh  = priv;
1958         struct bttv *btv = fh->btv;
1959         int err;
1960
1961         err = v4l2_prio_check(&btv->prio, &fh->prio);
1962         if (0 != err)
1963                 return err;
1964
1965         if (UNSET == bttv_tvcards[btv->c.type].tuner)
1966                 return -EINVAL;
1967
1968         if (0 != t->index)
1969                 return -EINVAL;
1970
1971         mutex_lock(&btv->lock);
1972         bttv_call_i2c_clients(btv, VIDIOC_S_TUNER, t);
1973
1974         if (btv->audio_mode_gpio)
1975                 btv->audio_mode_gpio(btv, t, 1);
1976
1977         mutex_unlock(&btv->lock);
1978
1979         return 0;
1980 }
1981
1982 static int bttv_g_frequency(struct file *file, void *priv,
1983                                         struct v4l2_frequency *f)
1984 {
1985         struct bttv_fh *fh  = priv;
1986         struct bttv *btv = fh->btv;
1987         int err;
1988
1989         err = v4l2_prio_check(&btv->prio, &fh->prio);
1990         if (0 != err)
1991                 return err;
1992
1993         f->type = btv->radio_user ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1994         f->frequency = btv->freq;
1995
1996         return 0;
1997 }
1998
1999 static int bttv_s_frequency(struct file *file, void *priv,
2000                                         struct v4l2_frequency *f)
2001 {
2002         struct bttv_fh *fh  = priv;
2003         struct bttv *btv = fh->btv;
2004         int err;
2005
2006         err = v4l2_prio_check(&btv->prio, &fh->prio);
2007         if (0 != err)
2008                 return err;
2009
2010         if (unlikely(f->tuner != 0))
2011                 return -EINVAL;
2012         if (unlikely(f->type != (btv->radio_user
2013                 ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV)))
2014                 return -EINVAL;
2015         mutex_lock(&btv->lock);
2016         btv->freq = f->frequency;
2017         bttv_call_i2c_clients(btv, VIDIOC_S_FREQUENCY, f);
2018         if (btv->has_matchbox && btv->radio_user)
2019                 tea5757_set_freq(btv, btv->freq);
2020         mutex_unlock(&btv->lock);
2021         return 0;
2022 }
2023
2024 static int bttv_log_status(struct file *file, void *f)
2025 {
2026         struct bttv_fh *fh  = f;
2027         struct bttv *btv = fh->btv;
2028
2029         printk(KERN_INFO "bttv%d: ========  START STATUS CARD #%d  ========\n",
2030                         btv->c.nr, btv->c.nr);
2031         bttv_call_i2c_clients(btv, VIDIOC_LOG_STATUS, NULL);
2032         printk(KERN_INFO "bttv%d: ========  END STATUS CARD   #%d  ========\n",
2033                         btv->c.nr, btv->c.nr);
2034         return 0;
2035 }
2036
2037 #ifdef CONFIG_VIDEO_ADV_DEBUG
2038 static int bttv_g_register(struct file *file, void *f,
2039                                         struct v4l2_register *reg)
2040 {
2041         struct bttv_fh *fh = f;
2042         struct bttv *btv = fh->btv;
2043
2044         if (!capable(CAP_SYS_ADMIN))
2045                 return -EPERM;
2046
2047         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
2048                 return -EINVAL;
2049
2050         /* bt848 has a 12-bit register space */
2051         reg->reg &= 0xfff;
2052         reg->val = btread(reg->reg);
2053
2054         return 0;
2055 }
2056
2057 static int bttv_s_register(struct file *file, void *f,
2058                                         struct v4l2_register *reg)
2059 {
2060         struct bttv_fh *fh = f;
2061         struct bttv *btv = fh->btv;
2062
2063         if (!capable(CAP_SYS_ADMIN))
2064                 return -EPERM;
2065
2066         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
2067                 return -EINVAL;
2068
2069         /* bt848 has a 12-bit register space */
2070         reg->reg &= 0xfff;
2071         btwrite(reg->val, reg->reg);
2072
2073         return 0;
2074 }
2075 #endif
2076
2077 /* Given cropping boundaries b and the scaled width and height of a
2078    single field or frame, which must not exceed hardware limits, this
2079    function adjusts the cropping parameters c. */
2080 static void
2081 bttv_crop_adjust        (struct bttv_crop *             c,
2082                          const struct v4l2_rect *       b,
2083                          __s32                          width,
2084                          __s32                          height,
2085                          enum v4l2_field                field)
2086 {
2087         __s32 frame_height = height << !V4L2_FIELD_HAS_BOTH(field);
2088         __s32 max_left;
2089         __s32 max_top;
2090
2091         if (width < c->min_scaled_width) {
2092                 /* Max. hor. scale factor 16:1. */
2093                 c->rect.width = width * 16;
2094         } else if (width > c->max_scaled_width) {
2095                 /* Min. hor. scale factor 1:1. */
2096                 c->rect.width = width;
2097
2098                 max_left = b->left + b->width - width;
2099                 max_left = min(max_left, (__s32) MAX_HDELAY);
2100                 if (c->rect.left > max_left)
2101                         c->rect.left = max_left;
2102         }
2103
2104         if (height < c->min_scaled_height) {
2105                 /* Max. vert. scale factor 16:1, single fields 8:1. */
2106                 c->rect.height = height * 16;
2107         } else if (frame_height > c->max_scaled_height) {
2108                 /* Min. vert. scale factor 1:1.
2109                    Top and height count field lines times two. */
2110                 c->rect.height = (frame_height + 1) & ~1;
2111
2112                 max_top = b->top + b->height - c->rect.height;
2113                 if (c->rect.top > max_top)
2114                         c->rect.top = max_top;
2115         }
2116
2117         bttv_crop_calc_limits(c);
2118 }
2119
2120 /* Returns an error if scaling to a frame or single field with the given
2121    width and height is not possible with the current cropping parameters
2122    and width aligned according to width_mask. If adjust_size is TRUE the
2123    function may adjust the width and/or height instead, rounding width
2124    to (width + width_bias) & width_mask. If adjust_crop is TRUE it may
2125    also adjust the current cropping parameters to get closer to the
2126    desired image size. */
2127 static int
2128 limit_scaled_size       (struct bttv_fh *               fh,
2129                          __s32 *                        width,
2130                          __s32 *                        height,
2131                          enum v4l2_field                field,
2132                          unsigned int                   width_mask,
2133                          unsigned int                   width_bias,
2134                          int                            adjust_size,
2135                          int                            adjust_crop)
2136 {
2137         struct bttv *btv = fh->btv;
2138         const struct v4l2_rect *b;
2139         struct bttv_crop *c;
2140         __s32 min_width;
2141         __s32 min_height;
2142         __s32 max_width;
2143         __s32 max_height;
2144         int rc;
2145
2146         BUG_ON((int) width_mask >= 0 ||
2147                width_bias >= (unsigned int) -width_mask);
2148
2149         /* Make sure tvnorm, vbi_end and the current cropping parameters
2150            remain consistent until we're done. */
2151         mutex_lock(&btv->lock);
2152
2153         b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
2154
2155         /* Do crop - use current, don't - use default parameters. */
2156         c = &btv->crop[!!fh->do_crop];
2157
2158         if (fh->do_crop
2159             && adjust_size
2160             && adjust_crop
2161             && !locked_btres(btv, VIDEO_RESOURCES)) {
2162                 min_width = 48;
2163                 min_height = 32;
2164
2165                 /* We cannot scale up. When the scaled image is larger
2166                    than crop.rect we adjust the crop.rect as required
2167                    by the V4L2 spec, hence cropcap.bounds are our limit. */
2168                 max_width = min(b->width, (__s32) MAX_HACTIVE);
2169                 max_height = b->height;
2170
2171                 /* We cannot capture the same line as video and VBI data.
2172                    Note btv->vbi_end is really a minimum, see
2173                    bttv_vbi_try_fmt(). */
2174                 if (btv->vbi_end > b->top) {
2175                         max_height -= btv->vbi_end - b->top;
2176                         rc = -EBUSY;
2177                         if (min_height > max_height)
2178                                 goto fail;
2179                 }
2180         } else {
2181                 rc = -EBUSY;
2182                 if (btv->vbi_end > c->rect.top)
2183                         goto fail;
2184
2185                 min_width  = c->min_scaled_width;
2186                 min_height = c->min_scaled_height;
2187                 max_width  = c->max_scaled_width;
2188                 max_height = c->max_scaled_height;
2189
2190                 adjust_crop = 0;
2191         }
2192
2193         min_width = (min_width - width_mask - 1) & width_mask;
2194         max_width = max_width & width_mask;
2195
2196         /* Max. scale factor is 16:1 for frames, 8:1 for fields. */
2197         min_height = min_height;
2198         /* Min. scale factor is 1:1. */
2199         max_height >>= !V4L2_FIELD_HAS_BOTH(field);
2200
2201         if (adjust_size) {
2202                 *width = clamp(*width, min_width, max_width);
2203                 *height = clamp(*height, min_height, max_height);
2204
2205                 /* Round after clamping to avoid overflow. */
2206                 *width = (*width + width_bias) & width_mask;
2207
2208                 if (adjust_crop) {
2209                         bttv_crop_adjust(c, b, *width, *height, field);
2210
2211                         if (btv->vbi_end > c->rect.top) {
2212                                 /* Move the crop window out of the way. */
2213                                 c->rect.top = btv->vbi_end;
2214                         }
2215                 }
2216         } else {
2217                 rc = -EINVAL;
2218                 if (*width  < min_width ||
2219                     *height < min_height ||
2220                     *width  > max_width ||
2221                     *height > max_height ||
2222                     0 != (*width & ~width_mask))
2223                         goto fail;
2224         }
2225
2226         rc = 0; /* success */
2227
2228  fail:
2229         mutex_unlock(&btv->lock);
2230
2231         return rc;
2232 }
2233
2234 /* Returns an error if the given overlay window dimensions are not
2235    possible with the current cropping parameters. If adjust_size is
2236    TRUE the function may adjust the window width and/or height
2237    instead, however it always rounds the horizontal position and
2238    width as btcx_align() does. If adjust_crop is TRUE the function
2239    may also adjust the current cropping parameters to get closer
2240    to the desired window size. */
2241 static int
2242 verify_window           (struct bttv_fh *               fh,
2243                          struct v4l2_window *           win,
2244                          int                            adjust_size,
2245                          int                            adjust_crop)
2246 {
2247         enum v4l2_field field;
2248         unsigned int width_mask;
2249         int rc;
2250
2251         if (win->w.width  < 48 || win->w.height < 32)
2252                 return -EINVAL;
2253         if (win->clipcount > 2048)
2254                 return -EINVAL;
2255
2256         field = win->field;
2257
2258         if (V4L2_FIELD_ANY == field) {
2259                 __s32 height2;
2260
2261                 height2 = fh->btv->crop[!!fh->do_crop].rect.height >> 1;
2262                 field = (win->w.height > height2)
2263                         ? V4L2_FIELD_INTERLACED
2264                         : V4L2_FIELD_TOP;
2265         }
2266         switch (field) {
2267         case V4L2_FIELD_TOP:
2268         case V4L2_FIELD_BOTTOM:
2269         case V4L2_FIELD_INTERLACED:
2270                 break;
2271         default:
2272                 return -EINVAL;
2273         }
2274
2275         /* 4-byte alignment. */
2276         if (NULL == fh->ovfmt)
2277                 return -EINVAL;
2278         width_mask = ~0;
2279         switch (fh->ovfmt->depth) {
2280         case 8:
2281         case 24:
2282                 width_mask = ~3;
2283                 break;
2284         case 16:
2285                 width_mask = ~1;
2286                 break;
2287         case 32:
2288                 break;
2289         default:
2290                 BUG();
2291         }
2292
2293         win->w.width -= win->w.left & ~width_mask;
2294         win->w.left = (win->w.left - width_mask - 1) & width_mask;
2295
2296         rc = limit_scaled_size(fh, &win->w.width, &win->w.height,
2297                                field, width_mask,
2298                                /* width_bias: round down */ 0,
2299                                adjust_size, adjust_crop);
2300         if (0 != rc)
2301                 return rc;
2302
2303         win->field = field;
2304         return 0;
2305 }
2306
2307 static int setup_window(struct bttv_fh *fh, struct bttv *btv,
2308                         struct v4l2_window *win, int fixup)
2309 {
2310         struct v4l2_clip *clips = NULL;
2311         int n,size,retval = 0;
2312
2313         if (NULL == fh->ovfmt)
2314                 return -EINVAL;
2315         if (!(fh->ovfmt->flags & FORMAT_FLAGS_PACKED))
2316                 return -EINVAL;
2317         retval = verify_window(fh, win,
2318                                /* adjust_size */ fixup,
2319                                /* adjust_crop */ fixup);
2320         if (0 != retval)
2321                 return retval;
2322
2323         /* copy clips  --  luckily v4l1 + v4l2 are binary
2324            compatible here ...*/
2325         n = win->clipcount;
2326         size = sizeof(*clips)*(n+4);
2327         clips = kmalloc(size,GFP_KERNEL);
2328         if (NULL == clips)
2329                 return -ENOMEM;
2330         if (n > 0) {
2331                 if (copy_from_user(clips,win->clips,sizeof(struct v4l2_clip)*n)) {
2332                         kfree(clips);
2333                         return -EFAULT;
2334                 }
2335         }
2336         /* clip against screen */
2337         if (NULL != btv->fbuf.base)
2338                 n = btcx_screen_clips(btv->fbuf.fmt.width, btv->fbuf.fmt.height,
2339                                       &win->w, clips, n);
2340         btcx_sort_clips(clips,n);
2341
2342         /* 4-byte alignments */
2343         switch (fh->ovfmt->depth) {
2344         case 8:
2345         case 24:
2346                 btcx_align(&win->w, clips, n, 3);
2347                 break;
2348         case 16:
2349                 btcx_align(&win->w, clips, n, 1);
2350                 break;
2351         case 32:
2352                 /* no alignment fixups needed */
2353                 break;
2354         default:
2355                 BUG();
2356         }
2357
2358         mutex_lock(&fh->cap.vb_lock);
2359         kfree(fh->ov.clips);
2360         fh->ov.clips    = clips;
2361         fh->ov.nclips   = n;
2362
2363         fh->ov.w        = win->w;
2364         fh->ov.field    = win->field;
2365         fh->ov.setup_ok = 1;
2366         btv->init.ov.w.width   = win->w.width;
2367         btv->init.ov.w.height  = win->w.height;
2368         btv->init.ov.field     = win->field;
2369
2370         /* update overlay if needed */
2371         retval = 0;
2372         if (check_btres(fh, RESOURCE_OVERLAY)) {
2373                 struct bttv_buffer *new;
2374
2375                 new = videobuf_pci_alloc(sizeof(*new));
2376                 new->crop = btv->crop[!!fh->do_crop].rect;
2377                 bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
2378                 retval = bttv_switch_overlay(btv,fh,new);
2379         }
2380         mutex_unlock(&fh->cap.vb_lock);
2381         return retval;
2382 }
2383
2384 /* ----------------------------------------------------------------------- */
2385
2386 static struct videobuf_queue* bttv_queue(struct bttv_fh *fh)
2387 {
2388         struct videobuf_queue* q = NULL;
2389
2390         switch (fh->type) {
2391         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2392                 q = &fh->cap;
2393                 break;
2394         case V4L2_BUF_TYPE_VBI_CAPTURE:
2395                 q = &fh->vbi;
2396                 break;
2397         default:
2398                 BUG();
2399         }
2400         return q;
2401 }
2402
2403 static int bttv_resource(struct bttv_fh *fh)
2404 {
2405         int res = 0;
2406
2407         switch (fh->type) {
2408         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2409                 res = RESOURCE_VIDEO_STREAM;
2410                 break;
2411         case V4L2_BUF_TYPE_VBI_CAPTURE:
2412                 res = RESOURCE_VBI;
2413                 break;
2414         default:
2415                 BUG();
2416         }
2417         return res;
2418 }
2419
2420 static int bttv_switch_type(struct bttv_fh *fh, enum v4l2_buf_type type)
2421 {
2422         struct videobuf_queue *q = bttv_queue(fh);
2423         int res = bttv_resource(fh);
2424
2425         if (check_btres(fh,res))
2426                 return -EBUSY;
2427         if (videobuf_queue_is_busy(q))
2428                 return -EBUSY;
2429         fh->type = type;
2430         return 0;
2431 }
2432
2433 static void
2434 pix_format_set_size     (struct v4l2_pix_format *       f,
2435                          const struct bttv_format *     fmt,
2436                          unsigned int                   width,
2437                          unsigned int                   height)
2438 {
2439         f->width = width;
2440         f->height = height;
2441
2442         if (fmt->flags & FORMAT_FLAGS_PLANAR) {
2443                 f->bytesperline = width; /* Y plane */
2444                 f->sizeimage = (width * height * fmt->depth) >> 3;
2445         } else {
2446                 f->bytesperline = (width * fmt->depth) >> 3;
2447                 f->sizeimage = height * f->bytesperline;
2448         }
2449 }
2450
2451 static int bttv_g_fmt_cap(struct file *file, void *priv,
2452                                         struct v4l2_format *f)
2453 {
2454         struct bttv_fh *fh  = priv;
2455
2456         pix_format_set_size(&f->fmt.pix, fh->fmt,
2457                                 fh->width, fh->height);
2458         f->fmt.pix.field        = fh->cap.field;
2459         f->fmt.pix.pixelformat  = fh->fmt->fourcc;
2460
2461         return 0;
2462 }
2463
2464 static int bttv_g_fmt_overlay(struct file *file, void *priv,
2465                                         struct v4l2_format *f)
2466 {
2467         struct bttv_fh *fh  = priv;
2468
2469         f->fmt.win.w     = fh->ov.w;
2470         f->fmt.win.field = fh->ov.field;
2471
2472         return 0;
2473 }
2474
2475 static int bttv_try_fmt_cap(struct file *file, void *priv,
2476                                                 struct v4l2_format *f)
2477 {
2478         const struct bttv_format *fmt;
2479         struct bttv_fh *fh = priv;
2480         struct bttv *btv = fh->btv;
2481         enum v4l2_field field;
2482         __s32 width, height;
2483         int rc;
2484
2485         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2486         if (NULL == fmt)
2487                 return -EINVAL;
2488
2489         field = f->fmt.pix.field;
2490
2491         if (V4L2_FIELD_ANY == field) {
2492                 __s32 height2;
2493
2494                 height2 = btv->crop[!!fh->do_crop].rect.height >> 1;
2495                 field = (f->fmt.pix.height > height2)
2496                         ? V4L2_FIELD_INTERLACED
2497                         : V4L2_FIELD_BOTTOM;
2498         }
2499
2500         if (V4L2_FIELD_SEQ_BT == field)
2501                 field = V4L2_FIELD_SEQ_TB;
2502
2503         switch (field) {
2504         case V4L2_FIELD_TOP:
2505         case V4L2_FIELD_BOTTOM:
2506         case V4L2_FIELD_ALTERNATE:
2507         case V4L2_FIELD_INTERLACED:
2508                 break;
2509         case V4L2_FIELD_SEQ_TB:
2510                 if (fmt->flags & FORMAT_FLAGS_PLANAR)
2511                         return -EINVAL;
2512                 break;
2513         default:
2514                 return -EINVAL;
2515         }
2516
2517         width = f->fmt.pix.width;
2518         height = f->fmt.pix.height;
2519
2520         rc = limit_scaled_size(fh, &width, &height, field,
2521                                /* width_mask: 4 pixels */ ~3,
2522                                /* width_bias: nearest */ 2,
2523                                /* adjust_size */ 1,
2524                                /* adjust_crop */ 0);
2525         if (0 != rc)
2526                 return rc;
2527
2528         /* update data for the application */
2529         f->fmt.pix.field = field;
2530         pix_format_set_size(&f->fmt.pix, fmt, width, height);
2531
2532         return 0;
2533 }
2534
2535 static int bttv_try_fmt_overlay(struct file *file, void *priv,
2536                                                 struct v4l2_format *f)
2537 {
2538         struct bttv_fh *fh = priv;
2539
2540         return verify_window(fh, &f->fmt.win,
2541                         /* adjust_size */ 1,
2542                         /* adjust_crop */ 0);
2543 }
2544
2545 static int bttv_s_fmt_cap(struct file *file, void *priv,
2546                                 struct v4l2_format *f)
2547 {
2548         int retval;
2549         const struct bttv_format *fmt;
2550         struct bttv_fh *fh = priv;
2551         struct bttv *btv = fh->btv;
2552         __s32 width, height;
2553         enum v4l2_field field;
2554
2555         retval = bttv_switch_type(fh, f->type);
2556         if (0 != retval)
2557                 return retval;
2558
2559         retval = bttv_try_fmt_cap(file, priv, f);
2560         if (0 != retval)
2561                 return retval;
2562
2563         width = f->fmt.pix.width;
2564         height = f->fmt.pix.height;
2565         field = f->fmt.pix.field;
2566
2567         retval = limit_scaled_size(fh, &width, &height, f->fmt.pix.field,
2568                                /* width_mask: 4 pixels */ ~3,
2569                                /* width_bias: nearest */ 2,
2570                                /* adjust_size */ 1,
2571                                /* adjust_crop */ 1);
2572         if (0 != retval)
2573                 return retval;
2574
2575         f->fmt.pix.field = field;
2576
2577         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
2578
2579         /* update our state informations */
2580         mutex_lock(&fh->cap.vb_lock);
2581         fh->fmt              = fmt;
2582         fh->cap.field        = f->fmt.pix.field;
2583         fh->cap.last         = V4L2_FIELD_NONE;
2584         fh->width            = f->fmt.pix.width;
2585         fh->height           = f->fmt.pix.height;
2586         btv->init.fmt        = fmt;
2587         btv->init.width      = f->fmt.pix.width;
2588         btv->init.height     = f->fmt.pix.height;
2589         mutex_unlock(&fh->cap.vb_lock);
2590
2591         return 0;
2592 }
2593
2594 static int bttv_s_fmt_overlay(struct file *file, void *priv,
2595                                 struct v4l2_format *f)
2596 {
2597         struct bttv_fh *fh = priv;
2598         struct bttv *btv = fh->btv;
2599
2600         if (no_overlay > 0) {
2601                 printk(KERN_ERR "V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
2602                 return -EINVAL;
2603         }
2604
2605         return setup_window(fh, btv, &f->fmt.win, 1);
2606 }
2607
2608 #ifdef CONFIG_VIDEO_V4L1_COMPAT
2609 static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
2610 {
2611         int retval;
2612         unsigned int i;
2613         struct bttv_fh *fh = priv;
2614
2615         mutex_lock(&fh->cap.vb_lock);
2616         retval = videobuf_mmap_setup(&fh->cap, gbuffers, gbufsize,
2617                                      V4L2_MEMORY_MMAP);
2618         if (retval < 0) {
2619                 mutex_unlock(&fh->cap.vb_lock);
2620                 return retval;
2621         }
2622
2623         gbuffers = retval;
2624         memset(mbuf, 0, sizeof(*mbuf));
2625         mbuf->frames = gbuffers;
2626         mbuf->size   = gbuffers * gbufsize;
2627
2628         for (i = 0; i < gbuffers; i++)
2629                 mbuf->offsets[i] = i * gbufsize;
2630
2631         mutex_unlock(&fh->cap.vb_lock);
2632         return 0;
2633 }
2634 #endif
2635
2636 static int bttv_querycap(struct file *file, void  *priv,
2637                                 struct v4l2_capability *cap)
2638 {
2639         struct bttv_fh *fh = priv;
2640         struct bttv *btv = fh->btv;
2641
2642         if (0 == v4l2)
2643                 return -EINVAL;
2644
2645         strlcpy(cap->driver, "bttv", sizeof(cap->driver));
2646         strlcpy(cap->card, btv->video_dev->name, sizeof(cap->card));
2647         snprintf(cap->bus_info, sizeof(cap->bus_info),
2648                  "PCI:%s", pci_name(btv->c.pci));
2649         cap->version = BTTV_VERSION_CODE;
2650         cap->capabilities =
2651                 V4L2_CAP_VIDEO_CAPTURE |
2652                 V4L2_CAP_VBI_CAPTURE |
2653                 V4L2_CAP_READWRITE |
2654                 V4L2_CAP_STREAMING;
2655         if (no_overlay <= 0)
2656                 cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY;
2657
2658         if (bttv_tvcards[btv->c.type].tuner != UNSET &&
2659             bttv_tvcards[btv->c.type].tuner != TUNER_ABSENT)
2660                 cap->capabilities |= V4L2_CAP_TUNER;
2661         return 0;
2662 }
2663
2664 static int bttv_enum_fmt_vbi(struct file *file, void  *priv,
2665                                 struct v4l2_fmtdesc *f)
2666 {
2667         if (0 != f->index)
2668                 return -EINVAL;
2669
2670         f->pixelformat = V4L2_PIX_FMT_GREY;
2671         strcpy(f->description, "vbi data");
2672
2673         return 0;
2674 }
2675
2676 static int bttv_enum_fmt_cap_ovr(struct v4l2_fmtdesc *f)
2677 {
2678         int index = -1, i;
2679
2680         for (i = 0; i < FORMATS; i++) {
2681                 if (formats[i].fourcc != -1)
2682                         index++;
2683                 if ((unsigned int)index == f->index)
2684                         break;
2685         }
2686         if (FORMATS == i)
2687                 return -EINVAL;
2688
2689         f->pixelformat = formats[i].fourcc;
2690         strlcpy(f->description, formats[i].name, sizeof(f->description));
2691
2692         return i;
2693 }
2694
2695 static int bttv_enum_fmt_cap(struct file *file, void  *priv,
2696                                 struct v4l2_fmtdesc *f)
2697 {
2698         int rc = bttv_enum_fmt_cap_ovr(f);
2699
2700         if (rc < 0)
2701                 return rc;
2702
2703         return 0;
2704 }
2705
2706 static int bttv_enum_fmt_overlay(struct file *file, void  *priv,
2707                                         struct v4l2_fmtdesc *f)
2708 {
2709         int rc;
2710
2711         if (no_overlay > 0) {
2712                 printk(KERN_ERR "V4L2_BUF_TYPE_VIDEO_OVERLAY: no_overlay\n");
2713                 return -EINVAL;
2714         }
2715
2716         rc = bttv_enum_fmt_cap_ovr(f);
2717
2718         if (rc < 0)
2719                 return rc;
2720
2721         if (!(formats[rc].flags & FORMAT_FLAGS_PACKED))
2722                 return -EINVAL;
2723
2724         return 0;
2725 }
2726
2727 static int bttv_g_fbuf(struct file *file, void *f,
2728                                 struct v4l2_framebuffer *fb)
2729 {
2730         struct bttv_fh *fh = f;
2731         struct bttv *btv = fh->btv;
2732
2733         *fb = btv->fbuf;
2734         fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
2735         if (fh->ovfmt)
2736                 fb->fmt.pixelformat  = fh->ovfmt->fourcc;
2737         return 0;
2738 }
2739
2740 static int bttv_overlay(struct file *file, void *f, unsigned int on)
2741 {
2742         struct bttv_fh *fh = f;
2743         struct bttv *btv = fh->btv;
2744         struct bttv_buffer *new;
2745         int retval;
2746
2747         if (on) {
2748                 /* verify args */
2749                 if (NULL == btv->fbuf.base)
2750                         return -EINVAL;
2751                 if (!fh->ov.setup_ok) {
2752                         dprintk("bttv%d: overlay: !setup_ok\n", btv->c.nr);
2753                         return -EINVAL;
2754                 }
2755         }
2756
2757         if (!check_alloc_btres(btv, fh, RESOURCE_OVERLAY))
2758                 return -EBUSY;
2759
2760         mutex_lock(&fh->cap.vb_lock);
2761         if (on) {
2762                 fh->ov.tvnorm = btv->tvnorm;
2763                 new = videobuf_pci_alloc(sizeof(*new));
2764                 new->crop = btv->crop[!!fh->do_crop].rect;
2765                 bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
2766         } else {
2767                 new = NULL;
2768         }
2769
2770         /* switch over */
2771         retval = bttv_switch_overlay(btv, fh, new);
2772         mutex_unlock(&fh->cap.vb_lock);
2773         return retval;
2774 }
2775
2776 static int bttv_s_fbuf(struct file *file, void *f,
2777                                 struct v4l2_framebuffer *fb)
2778 {
2779         struct bttv_fh *fh = f;
2780         struct bttv *btv = fh->btv;
2781         const struct bttv_format *fmt;
2782         int retval;
2783
2784         if (!capable(CAP_SYS_ADMIN) &&
2785                 !capable(CAP_SYS_RAWIO))
2786                 return -EPERM;
2787
2788         /* check args */
2789         fmt = format_by_fourcc(fb->fmt.pixelformat);
2790         if (NULL == fmt)
2791                 return -EINVAL;
2792         if (0 == (fmt->flags & FORMAT_FLAGS_PACKED))
2793                 return -EINVAL;
2794
2795         retval = -EINVAL;
2796         if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
2797                 __s32 width = fb->fmt.width;
2798                 __s32 height = fb->fmt.height;
2799
2800                 retval = limit_scaled_size(fh, &width, &height,
2801                                            V4L2_FIELD_INTERLACED,
2802                                            /* width_mask */ ~3,
2803                                            /* width_bias */ 2,
2804                                            /* adjust_size */ 0,
2805                                            /* adjust_crop */ 0);
2806                 if (0 != retval)
2807                         return retval;
2808         }
2809
2810         /* ok, accept it */
2811         mutex_lock(&fh->cap.vb_lock);
2812         btv->fbuf.base       = fb->base;
2813         btv->fbuf.fmt.width  = fb->fmt.width;
2814         btv->fbuf.fmt.height = fb->fmt.height;
2815         if (0 != fb->fmt.bytesperline)
2816                 btv->fbuf.fmt.bytesperline = fb->fmt.bytesperline;
2817         else
2818                 btv->fbuf.fmt.bytesperline = btv->fbuf.fmt.width*fmt->depth/8;
2819
2820         retval = 0;
2821         fh->ovfmt = fmt;
2822         btv->init.ovfmt = fmt;
2823         if (fb->flags & V4L2_FBUF_FLAG_OVERLAY) {
2824                 fh->ov.w.left   = 0;
2825                 fh->ov.w.top    = 0;
2826                 fh->ov.w.width  = fb->fmt.width;
2827                 fh->ov.w.height = fb->fmt.height;
2828                 btv->init.ov.w.width  = fb->fmt.width;
2829                 btv->init.ov.w.height = fb->fmt.height;
2830                         kfree(fh->ov.clips);
2831                 fh->ov.clips = NULL;
2832                 fh->ov.nclips = 0;
2833
2834                 if (check_btres(fh, RESOURCE_OVERLAY)) {
2835                         struct bttv_buffer *new;
2836
2837                         new = videobuf_pci_alloc(sizeof(*new));
2838                         new->crop = btv->crop[!!fh->do_crop].rect;
2839                         bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
2840                         retval = bttv_switch_overlay(btv, fh, new);
2841                 }
2842         }
2843         mutex_unlock(&fh->cap.vb_lock);
2844         return retval;
2845 }
2846
2847 static int bttv_reqbufs(struct file *file, void *priv,
2848                                 struct v4l2_requestbuffers *p)
2849 {
2850         struct bttv_fh *fh = priv;
2851         return videobuf_reqbufs(bttv_queue(fh), p);
2852 }
2853
2854 static int bttv_querybuf(struct file *file, void *priv,
2855                                 struct v4l2_buffer *b)
2856 {
2857         struct bttv_fh *fh = priv;
2858         return videobuf_querybuf(bttv_queue(fh), b);
2859 }
2860
2861 static int bttv_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
2862 {
2863         struct bttv_fh *fh = priv;
2864         struct bttv *btv = fh->btv;
2865         int res = bttv_resource(fh);
2866
2867         if (!check_alloc_btres(btv, fh, res))
2868                 return -EBUSY;
2869
2870         return videobuf_qbuf(bttv_queue(fh), b);
2871 }
2872
2873 static int bttv_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
2874 {
2875         struct bttv_fh *fh = priv;
2876         return videobuf_dqbuf(bttv_queue(fh), b,
2877                         file->f_flags & O_NONBLOCK);
2878 }
2879
2880 static int bttv_streamon(struct file *file, void *priv,
2881                                         enum v4l2_buf_type type)
2882 {
2883         struct bttv_fh *fh = priv;
2884         struct bttv *btv = fh->btv;
2885         int res = bttv_resource(fh);
2886
2887         if (!check_alloc_btres(btv, fh, res))
2888                 return -EBUSY;
2889         return videobuf_streamon(bttv_queue(fh));
2890 }
2891
2892
2893 static int bttv_streamoff(struct file *file, void *priv,
2894                                         enum v4l2_buf_type type)
2895 {
2896         struct bttv_fh *fh = priv;
2897         struct bttv *btv = fh->btv;
2898         int retval;
2899         int res = bttv_resource(fh);
2900
2901
2902         retval = videobuf_streamoff(bttv_queue(fh));
2903         if (retval < 0)
2904                 return retval;
2905         free_btres(btv, fh, res);
2906         return 0;
2907 }
2908
2909 static int bttv_queryctrl(struct file *file, void *priv,
2910                                         struct v4l2_queryctrl *c)
2911 {
2912         struct bttv_fh *fh = priv;
2913         struct bttv *btv = fh->btv;
2914         const struct v4l2_queryctrl *ctrl;
2915
2916         if ((c->id <  V4L2_CID_BASE ||
2917              c->id >= V4L2_CID_LASTP1) &&
2918             (c->id <  V4L2_CID_PRIVATE_BASE ||
2919              c->id >= V4L2_CID_PRIVATE_LASTP1))
2920                 return -EINVAL;
2921
2922         if (!btv->volume_gpio && (c->id == V4L2_CID_AUDIO_VOLUME))
2923                 *c = no_ctl;
2924         else {
2925                 ctrl = ctrl_by_id(c->id);
2926
2927                 *c = (NULL != ctrl) ? *ctrl : no_ctl;
2928         }
2929
2930         return 0;
2931 }
2932
2933 static int bttv_g_parm(struct file *file, void *f,
2934                                 struct v4l2_streamparm *parm)
2935 {
2936         struct bttv_fh *fh = f;
2937         struct bttv *btv = fh->btv;
2938         struct v4l2_standard s;
2939
2940         if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
2941                 return -EINVAL;
2942         v4l2_video_std_construct(&s, bttv_tvnorms[btv->tvnorm].v4l2_id,
2943                                  bttv_tvnorms[btv->tvnorm].name);
2944         parm->parm.capture.timeperframe = s.frameperiod;
2945         return 0;
2946 }
2947
2948 static int bttv_g_tuner(struct file *file, void *priv,
2949                                 struct v4l2_tuner *t)
2950 {
2951         struct bttv_fh *fh = priv;
2952         struct bttv *btv = fh->btv;
2953
2954         if (UNSET == bttv_tvcards[btv->c.type].tuner)
2955                 return -EINVAL;
2956         if (0 != t->index)
2957                 return -EINVAL;
2958
2959         mutex_lock(&btv->lock);
2960         memset(t, 0, sizeof(*t));
2961         t->rxsubchans = V4L2_TUNER_SUB_MONO;
2962         bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t);
2963         strcpy(t->name, "Television");
2964         t->capability = V4L2_TUNER_CAP_NORM;
2965         t->type       = V4L2_TUNER_ANALOG_TV;
2966         if (btread(BT848_DSTATUS)&BT848_DSTATUS_HLOC)
2967                 t->signal = 0xffff;
2968
2969         if (btv->audio_mode_gpio)
2970                 btv->audio_mode_gpio(btv, t, 0);
2971
2972         mutex_unlock(&btv->lock);
2973         return 0;
2974 }
2975
2976 static int bttv_g_priority(struct file *file, void *f, enum v4l2_priority *p)
2977 {
2978         struct bttv_fh *fh = f;
2979         struct bttv *btv = fh->btv;
2980
2981         *p = v4l2_prio_max(&btv->prio);
2982
2983         return 0;
2984 }
2985
2986 static int bttv_s_priority(struct file *file, void *f,
2987                                         enum v4l2_priority prio)
2988 {
2989         struct bttv_fh *fh = f;
2990         struct bttv *btv = fh->btv;
2991
2992         return v4l2_prio_change(&btv->prio, &fh->prio, prio);
2993 }
2994
2995 static int bttv_cropcap(struct file *file, void *priv,
2996                                 struct v4l2_cropcap *cap)
2997 {
2998         struct bttv_fh *fh = priv;
2999         struct bttv *btv = fh->btv;
3000
3001         if (cap->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3002             cap->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3003                 return -EINVAL;
3004
3005         *cap = bttv_tvnorms[btv->tvnorm].cropcap;
3006
3007         return 0;
3008 }
3009
3010 static int bttv_g_crop(struct file *file, void *f, struct v4l2_crop *crop)
3011 {
3012         struct bttv_fh *fh = f;
3013         struct bttv *btv = fh->btv;
3014
3015         if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3016             crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3017                 return -EINVAL;
3018
3019         /* No fh->do_crop = 1; because btv->crop[1] may be
3020            inconsistent with fh->width or fh->height and apps
3021            do not expect a change here. */
3022
3023         crop->c = btv->crop[!!fh->do_crop].rect;
3024
3025         return 0;
3026 }
3027
3028 static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop)
3029 {
3030         struct bttv_fh *fh = f;
3031         struct bttv *btv = fh->btv;
3032         const struct v4l2_rect *b;
3033         int retval;
3034         struct bttv_crop c;
3035         __s32 b_left;
3036         __s32 b_top;
3037         __s32 b_right;
3038         __s32 b_bottom;
3039
3040         if (crop->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
3041             crop->type != V4L2_BUF_TYPE_VIDEO_OVERLAY)
3042                 return -EINVAL;
3043
3044         retval = v4l2_prio_check(&btv->prio, &fh->prio);
3045         if (0 != retval)
3046                 return retval;
3047
3048         /* Make sure tvnorm, vbi_end and the current cropping
3049            parameters remain consistent until we're done. Note
3050            read() may change vbi_end in check_alloc_btres(). */
3051         mutex_lock(&btv->lock);
3052
3053         retval = -EBUSY;
3054
3055         if (locked_btres(fh->btv, VIDEO_RESOURCES)) {
3056                 mutex_unlock(&btv->lock);
3057                 return retval;
3058         }
3059
3060         b = &bttv_tvnorms[btv->tvnorm].cropcap.bounds;
3061
3062         b_left = b->left;
3063         b_right = b_left + b->width;
3064         b_bottom = b->top + b->height;
3065
3066         b_top = max(b->top, btv->vbi_end);
3067         if (b_top + 32 >= b_bottom) {
3068                 mutex_unlock(&btv->lock);
3069                 return retval;
3070         }
3071
3072         /* Min. scaled size 48 x 32. */
3073         c.rect.left = clamp(crop->c.left, b_left, b_right - 48);
3074         c.rect.left = min(c.rect.left, (__s32) MAX_HDELAY);
3075
3076         c.rect.width = clamp(crop->c.width,
3077                              48, b_right - c.rect.left);
3078
3079         c.rect.top = clamp(crop->c.top, b_top, b_bottom - 32);
3080         /* Top and height must be a multiple of two. */
3081         c.rect.top = (c.rect.top + 1) & ~1;
3082
3083         c.rect.height = clamp(crop->c.height,
3084                               32, b_bottom - c.rect.top);
3085         c.rect.height = (c.rect.height + 1) & ~1;
3086
3087         bttv_crop_calc_limits(&c);
3088
3089         btv->crop[1] = c;
3090
3091         mutex_unlock(&btv->lock);
3092
3093         fh->do_crop = 1;
3094
3095         mutex_lock(&fh->cap.vb_lock);
3096
3097         if (fh->width < c.min_scaled_width) {
3098                 fh->width = c.min_scaled_width;
3099                 btv->init.width = c.min_scaled_width;
3100         } else if (fh->width > c.max_scaled_width) {
3101                 fh->width = c.max_scaled_width;
3102                 btv->init.width = c.max_scaled_width;
3103         }
3104
3105         if (fh->height < c.min_scaled_height) {
3106                 fh->height = c.min_scaled_height;
3107                 btv->init.height = c.min_scaled_height;
3108         } else if (fh->height > c.max_scaled_height) {
3109                 fh->height = c.max_scaled_height;
3110                 btv->init.height = c.max_scaled_height;
3111         }
3112
3113         mutex_unlock(&fh->cap.vb_lock);
3114
3115         return 0;
3116 }
3117
3118 static int bttv_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
3119 {
3120         strcpy(a->name, "audio");
3121         return 0;
3122 }
3123
3124 static int bttv_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
3125 {
3126         return 0;
3127 }
3128
3129 static ssize_t bttv_read(struct file *file, char __user *data,
3130                          size_t count, loff_t *ppos)
3131 {
3132         struct bttv_fh *fh = file->private_data;
3133         int retval = 0;
3134
3135         if (fh->btv->errors)
3136                 bttv_reinit_bt848(fh->btv);
3137         dprintk("bttv%d: read count=%d type=%s\n",
3138                 fh->btv->c.nr,(int)count,v4l2_type_names[fh->type]);
3139
3140         switch (fh->type) {
3141         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3142                 if (!check_alloc_btres(fh->btv, fh, RESOURCE_VIDEO_READ)) {
3143                         /* VIDEO_READ in use by another fh,
3144                            or VIDEO_STREAM by any fh. */
3145                         return -EBUSY;
3146                 }
3147                 retval = videobuf_read_one(&fh->cap, data, count, ppos,
3148                                            file->f_flags & O_NONBLOCK);
3149                 free_btres(fh->btv, fh, RESOURCE_VIDEO_READ);
3150                 break;
3151         case V4L2_BUF_TYPE_VBI_CAPTURE:
3152                 if (!check_alloc_btres(fh->btv,fh,RESOURCE_VBI))
3153                         return -EBUSY;
3154                 retval = videobuf_read_stream(&fh->vbi, data, count, ppos, 1,
3155                                               file->f_flags & O_NONBLOCK);
3156                 break;
3157         default:
3158                 BUG();
3159         }
3160         return retval;
3161 }
3162
3163 static unsigned int bttv_poll(struct file *file, poll_table *wait)
3164 {
3165         struct bttv_fh *fh = file->private_data;
3166         struct bttv_buffer *buf;
3167         enum v4l2_field field;
3168
3169         if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
3170                 if (!check_alloc_btres(fh->btv,fh,RESOURCE_VBI))
3171                         return POLLERR;
3172                 return videobuf_poll_stream(file, &fh->vbi, wait);
3173         }
3174
3175         if (check_btres(fh,RESOURCE_VIDEO_STREAM)) {
3176                 /* streaming capture */
3177                 if (list_empty(&fh->cap.stream))
3178                         return POLLERR;
3179                 buf = list_entry(fh->cap.stream.next,struct bttv_buffer,vb.stream);
3180         } else {
3181                 /* read() capture */
3182                 mutex_lock(&fh->cap.vb_lock);
3183                 if (NULL == fh->cap.read_buf) {
3184                         /* need to capture a new frame */
3185                         if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM))
3186                                 goto err;
3187                         fh->cap.read_buf = videobuf_pci_alloc(fh->cap.msize);
3188                         if (NULL == fh->cap.read_buf)
3189                                 goto err;
3190                         fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR;
3191                         field = videobuf_next_field(&fh->cap);
3192                         if (0 != fh->cap.ops->buf_prepare(&fh->cap,fh->cap.read_buf,field)) {
3193                                 kfree (fh->cap.read_buf);
3194                                 fh->cap.read_buf = NULL;
3195                                 goto err;
3196                         }
3197                         fh->cap.ops->buf_queue(&fh->cap,fh->cap.read_buf);
3198                         fh->cap.read_off = 0;
3199                 }
3200                 mutex_unlock(&fh->cap.vb_lock);
3201                 buf = (struct bttv_buffer*)fh->cap.read_buf;
3202         }
3203
3204         poll_wait(file, &buf->vb.done, wait);
3205         if (buf->vb.state == VIDEOBUF_DONE ||
3206             buf->vb.state == VIDEOBUF_ERROR)
3207                 return POLLIN|POLLRDNORM;
3208         return 0;
3209 err:
3210         mutex_unlock(&fh->cap.vb_lock);
3211         return POLLERR;
3212 }
3213
3214 static int bttv_open(struct inode *inode, struct file *file)
3215 {
3216         int minor = iminor(inode);
3217         struct bttv *btv = NULL;
3218         struct bttv_fh *fh;
3219         enum v4l2_buf_type type = 0;
3220         unsigned int i;
3221
3222         dprintk(KERN_DEBUG "bttv: open minor=%d\n",minor);
3223
3224         for (i = 0; i < bttv_num; i++) {
3225                 if (bttvs[i].video_dev &&
3226                     bttvs[i].video_dev->minor == minor) {
3227                         btv = &bttvs[i];
3228                         type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
3229                         break;
3230                 }
3231                 if (bttvs[i].vbi_dev &&
3232                     bttvs[i].vbi_dev->minor == minor) {
3233                         btv = &bttvs[i];
3234                         type = V4L2_BUF_TYPE_VBI_CAPTURE;
3235                         break;
3236                 }
3237         }
3238         if (NULL == btv)
3239                 return -ENODEV;
3240
3241         dprintk(KERN_DEBUG "bttv%d: open called (type=%s)\n",
3242                 btv->c.nr,v4l2_type_names[type]);
3243
3244         /* allocate per filehandle data */
3245         fh = kmalloc(sizeof(*fh),GFP_KERNEL);
3246         if (NULL == fh)
3247                 return -ENOMEM;
3248         file->private_data = fh;
3249         *fh = btv->init;
3250         fh->type = type;
3251         fh->ov.setup_ok = 0;
3252         v4l2_prio_open(&btv->prio,&fh->prio);
3253
3254         videobuf_queue_pci_init(&fh->cap, &bttv_video_qops,
3255                             btv->c.pci, &btv->s_lock,
3256                             V4L2_BUF_TYPE_VIDEO_CAPTURE,
3257                             V4L2_FIELD_INTERLACED,
3258                             sizeof(struct bttv_buffer),
3259                             fh);
3260         videobuf_queue_pci_init(&fh->vbi, &bttv_vbi_qops,
3261                             btv->c.pci, &btv->s_lock,
3262                             V4L2_BUF_TYPE_VBI_CAPTURE,
3263                             V4L2_FIELD_SEQ_TB,
3264                             sizeof(struct bttv_buffer),
3265                             fh);
3266         set_tvnorm(btv,btv->tvnorm);
3267
3268         btv->users++;
3269
3270         /* The V4L2 spec requires one global set of cropping parameters
3271            which only change on request. These are stored in btv->crop[1].
3272            However for compatibility with V4L apps and cropping unaware
3273            V4L2 apps we now reset the cropping parameters as seen through
3274            this fh, which is to say VIDIOC_G_CROP and scaling limit checks
3275            will use btv->crop[0], the default cropping parameters for the
3276            current video standard, and VIDIOC_S_FMT will not implicitely
3277            change the cropping parameters until VIDIOC_S_CROP has been
3278            called. */
3279         fh->do_crop = !reset_crop; /* module parameter */
3280
3281         /* Likewise there should be one global set of VBI capture
3282            parameters, but for compatibility with V4L apps and earlier
3283            driver versions each fh has its own parameters. */
3284         bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm);
3285
3286         bttv_field_count(btv);
3287         return 0;
3288 }
3289
3290 static int bttv_release(struct inode *inode, struct file *file)
3291 {
3292         struct bttv_fh *fh = file->private_data;
3293         struct bttv *btv = fh->btv;
3294
3295         /* turn off overlay */
3296         if (check_btres(fh, RESOURCE_OVERLAY))
3297                 bttv_switch_overlay(btv,fh,NULL);
3298
3299         /* stop video capture */
3300         if (check_btres(fh, RESOURCE_VIDEO_STREAM)) {
3301                 videobuf_streamoff(&fh->cap);
3302                 free_btres(btv,fh,RESOURCE_VIDEO_STREAM);
3303         }
3304         if (fh->cap.read_buf) {
3305                 buffer_release(&fh->cap,fh->cap.read_buf);
3306                 kfree(fh->cap.read_buf);
3307         }
3308         if (check_btres(fh, RESOURCE_VIDEO_READ)) {
3309                 free_btres(btv, fh, RESOURCE_VIDEO_READ);
3310         }
3311
3312         /* stop vbi capture */
3313         if (check_btres(fh, RESOURCE_VBI)) {
3314                 videobuf_stop(&fh->vbi);
3315                 free_btres(btv,fh,RESOURCE_VBI);
3316         }
3317
3318         /* free stuff */
3319         videobuf_mmap_free(&fh->cap);
3320         videobuf_mmap_free(&fh->vbi);
3321         v4l2_prio_close(&btv->prio,&fh->prio);
3322         file->private_data = NULL;
3323         kfree(fh);
3324
3325         btv->users--;
3326         bttv_field_count(btv);
3327         return 0;
3328 }
3329
3330 static int
3331 bttv_mmap(struct file *file, struct vm_area_struct *vma)
3332 {
3333         struct bttv_fh *fh = file->private_data;
3334
3335         dprintk("bttv%d: mmap type=%s 0x%lx+%ld\n",
3336                 fh->btv->c.nr, v4l2_type_names[fh->type],
3337                 vma->vm_start, vma->vm_end - vma->vm_start);
3338         return videobuf_mmap_mapper(bttv_queue(fh),vma);
3339 }
3340
3341 static const struct file_operations bttv_fops =
3342 {
3343         .owner    = THIS_MODULE,
3344         .open     = bttv_open,
3345         .release  = bttv_release,
3346         .ioctl    = video_ioctl2,
3347         .compat_ioctl   = v4l_compat_ioctl32,
3348         .llseek   = no_llseek,
3349         .read     = bttv_read,
3350         .mmap     = bttv_mmap,
3351         .poll     = bttv_poll,
3352 };
3353
3354 static struct video_device bttv_video_template =
3355 {
3356         .fops     = &bttv_fops,
3357         .minor    = -1,
3358         .vidioc_querycap                = bttv_querycap,
3359         .vidioc_enum_fmt_cap            = bttv_enum_fmt_cap,
3360         .vidioc_g_fmt_cap               = bttv_g_fmt_cap,
3361         .vidioc_try_fmt_cap             = bttv_try_fmt_cap,
3362         .vidioc_s_fmt_cap               = bttv_s_fmt_cap,
3363         .vidioc_enum_fmt_overlay        = bttv_enum_fmt_overlay,
3364         .vidioc_g_fmt_overlay           = bttv_g_fmt_overlay,
3365         .vidioc_try_fmt_overlay         = bttv_try_fmt_overlay,
3366         .vidioc_s_fmt_overlay           = bttv_s_fmt_overlay,
3367         .vidioc_enum_fmt_vbi            = bttv_enum_fmt_vbi,
3368         .vidioc_g_fmt_vbi               = bttv_g_fmt_vbi,
3369         .vidioc_try_fmt_vbi             = bttv_try_fmt_vbi,
3370         .vidioc_s_fmt_vbi               = bttv_s_fmt_vbi,
3371         .vidioc_g_audio                 = bttv_g_audio,
3372         .vidioc_s_audio                 = bttv_s_audio,
3373         .vidioc_cropcap                 = bttv_cropcap,
3374         .vidioc_reqbufs                 = bttv_reqbufs,
3375         .vidioc_querybuf                = bttv_querybuf,
3376         .vidioc_qbuf                    = bttv_qbuf,
3377         .vidioc_dqbuf                   = bttv_dqbuf,
3378         .vidioc_s_std                   = bttv_s_std,
3379         .vidioc_enum_input              = bttv_enum_input,
3380         .vidioc_g_input                 = bttv_g_input,
3381         .vidioc_s_input                 = bttv_s_input,
3382         .vidioc_queryctrl               = bttv_queryctrl,
3383         .vidioc_g_ctrl                  = bttv_g_ctrl,
3384         .vidioc_s_ctrl                  = bttv_s_ctrl,
3385         .vidioc_streamon                = bttv_streamon,
3386         .vidioc_streamoff               = bttv_streamoff,
3387         .vidioc_g_tuner                 = bttv_g_tuner,
3388         .vidioc_s_tuner                 = bttv_s_tuner,
3389 #ifdef CONFIG_VIDEO_V4L1_COMPAT
3390         .vidiocgmbuf                    = vidiocgmbuf,
3391 #endif
3392         .vidioc_g_crop                  = bttv_g_crop,
3393         .vidioc_s_crop                  = bttv_s_crop,
3394         .vidioc_g_fbuf                  = bttv_g_fbuf,
3395         .vidioc_s_fbuf                  = bttv_s_fbuf,
3396         .vidioc_overlay                 = bttv_overlay,
3397         .vidioc_g_priority              = bttv_g_priority,
3398         .vidioc_s_priority              = bttv_s_priority,
3399         .vidioc_g_parm                  = bttv_g_parm,
3400         .vidioc_g_frequency             = bttv_g_frequency,
3401         .vidioc_s_frequency             = bttv_s_frequency,
3402         .vidioc_log_status              = bttv_log_status,
3403         .vidioc_querystd                = bttv_querystd,
3404 #ifdef CONFIG_VIDEO_ADV_DEBUG
3405         .vidioc_g_register              = bttv_g_register,
3406         .vidioc_s_register              = bttv_s_register,
3407 #endif
3408         .tvnorms                        = BTTV_NORMS,
3409         .current_norm                   = V4L2_STD_PAL,
3410 };
3411
3412 /* ----------------------------------------------------------------------- */
3413 /* radio interface                                                         */
3414
3415 static int radio_open(struct inode *inode, struct file *file)
3416 {
3417         int minor = iminor(inode);
3418         struct bttv *btv = NULL;
3419         struct bttv_fh *fh;
3420         unsigned int i;
3421
3422         dprintk("bttv: open minor=%d\n",minor);
3423
3424         for (i = 0; i < bttv_num; i++) {
3425                 if (bttvs[i].radio_dev->minor == minor) {
3426                         btv = &bttvs[i];
3427                         break;
3428                 }
3429         }
3430         if (NULL == btv)
3431                 return -ENODEV;
3432
3433         dprintk("bttv%d: open called (radio)\n",btv->c.nr);
3434
3435         /* allocate per filehandle data */
3436         fh = kmalloc(sizeof(*fh), GFP_KERNEL);
3437         if (NULL == fh)
3438                 return -ENOMEM;
3439         file->private_data = fh;
3440         *fh = btv->init;
3441         v4l2_prio_open(&btv->prio, &fh->prio);
3442
3443         mutex_lock(&btv->lock);
3444
3445         btv->radio_user++;
3446
3447         bttv_call_i2c_clients(btv,AUDC_SET_RADIO,NULL);
3448         audio_input(btv,TVAUDIO_INPUT_RADIO);
3449
3450         mutex_unlock(&btv->lock);
3451         return 0;
3452 }
3453
3454 static int radio_release(struct inode *inode, struct file *file)
3455 {
3456         struct bttv_fh *fh = file->private_data;
3457         struct bttv *btv = fh->btv;
3458         struct rds_command cmd;
3459
3460         btv->radio_user--;
3461
3462         bttv_call_i2c_clients(btv, RDS_CMD_CLOSE, &cmd);
3463
3464         return 0;
3465 }
3466
3467 static int radio_querycap(struct file *file, void *priv,
3468                                         struct v4l2_capability *cap)
3469 {
3470         struct bttv_fh *fh = priv;
3471         struct bttv *btv = fh->btv;
3472
3473         strcpy(cap->driver, "bttv");
3474         strlcpy(cap->card, btv->radio_dev->name, sizeof(cap->card));
3475         sprintf(cap->bus_info, "PCI:%s", pci_name(btv->c.pci));
3476         cap->version = BTTV_VERSION_CODE;
3477         cap->capabilities = V4L2_CAP_TUNER;
3478
3479         return 0;
3480 }
3481
3482 static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
3483 {
3484         struct bttv_fh *fh = priv;
3485         struct bttv *btv = fh->btv;
3486
3487         if (UNSET == bttv_tvcards[btv->c.type].tuner)
3488                 return -EINVAL;
3489         if (0 != t->index)
3490                 return -EINVAL;
3491         mutex_lock(&btv->lock);
3492         memset(t, 0, sizeof(*t));
3493         strcpy(t->name, "Radio");
3494         t->type = V4L2_TUNER_RADIO;
3495
3496         bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t);
3497
3498         if (btv->audio_mode_gpio)
3499                 btv->audio_mode_gpio(btv, t, 0);
3500
3501         mutex_unlock(&btv->lock);
3502
3503         return 0;
3504 }
3505
3506 static int radio_enum_input(struct file *file, void *priv,
3507                                 struct v4l2_input *i)
3508 {
3509         if (i->index != 0)
3510                 return -EINVAL;
3511
3512         strcpy(i->name, "Radio");
3513          i->type = V4L2_INPUT_TYPE_TUNER;
3514
3515         return 0;
3516 }
3517
3518 static int radio_g_audio(struct file *file, void *priv,
3519                                         struct v4l2_audio *a)
3520 {
3521         if (a->index != 0)
3522                 return -EINVAL;
3523
3524         memset(a, 0, sizeof(*a));
3525         strcpy(a->name, "Radio");
3526
3527         return 0;
3528 }
3529
3530 static int radio_s_tuner(struct file *file, void *priv,
3531                                         struct v4l2_tuner *t)
3532 {
3533         struct bttv_fh *fh = priv;
3534         struct bttv *btv = fh->btv;
3535
3536         if (0 != t->index)
3537                 return -EINVAL;
3538
3539         bttv_call_i2c_clients(btv, VIDIOC_G_TUNER, t);
3540         return 0;
3541 }
3542
3543 static int radio_s_audio(struct file *file, void *priv,
3544                                         struct v4l2_audio *a)
3545 {
3546         return 0;
3547 }
3548
3549 static int radio_s_input(struct file *filp, void *priv, unsigned int i)
3550 {
3551         return 0;
3552 }
3553
3554 static int radio_s_std(struct file *file, void *fh, v4l2_std_id *norm)
3555 {
3556         return 0;
3557 }
3558
3559 static int radio_queryctrl(struct file *file, void *priv,
3560                                         struct v4l2_queryctrl *c)
3561 {
3562         const struct v4l2_queryctrl *ctrl;
3563
3564         if (c->id <  V4L2_CID_BASE ||
3565                         c->id >= V4L2_CID_LASTP1)
3566                 return -EINVAL;
3567
3568         if (c->id == V4L2_CID_AUDIO_MUTE) {
3569                 ctrl = ctrl_by_id(c->id);
3570                 *c = *ctrl;
3571         } else
3572                 *c = no_ctl;
3573
3574         return 0;
3575 }
3576
3577 static int radio_g_input(struct file *filp, void *priv, unsigned int *i)
3578 {
3579         *i = 0;
3580         return 0;
3581 }
3582
3583 static ssize_t radio_read(struct file *file, char __user *data,
3584                          size_t count, loff_t *ppos)
3585 {
3586         struct bttv_fh *fh = file->private_data;
3587         struct bttv *btv = fh->btv;
3588         struct rds_command cmd;
3589         cmd.block_count = count/3;
3590         cmd.buffer = data;
3591         cmd.instance = file;
3592         cmd.result = -ENODEV;
3593
3594         bttv_call_i2c_clients(btv, RDS_CMD_READ, &cmd);
3595
3596         return cmd.result;
3597 }
3598
3599 static unsigned int radio_poll(struct file *file, poll_table *wait)
3600 {
3601         struct bttv_fh *fh = file->private_data;
3602         struct bttv *btv = fh->btv;
3603         struct rds_command cmd;
3604         cmd.instance = file;
3605         cmd.event_list = wait;
3606         cmd.result = -ENODEV;
3607         bttv_call_i2c_clients(btv, RDS_CMD_POLL, &cmd);
3608
3609         return cmd.result;
3610 }
3611
3612 static const struct file_operations radio_fops =
3613 {
3614         .owner    = THIS_MODULE,
3615         .open     = radio_open,
3616         .read     = radio_read,
3617         .release  = radio_release,
3618         .compat_ioctl   = v4l_compat_ioctl32,
3619         .ioctl    = video_ioctl2,
3620         .llseek   = no_llseek,
3621         .poll     = radio_poll,
3622 };
3623
3624 static struct video_device radio_template =
3625 {
3626         .fops     = &radio_fops,
3627         .minor    = -1,
3628         .vidioc_querycap        = radio_querycap,
3629         .vidioc_g_tuner         = radio_g_tuner,
3630         .vidioc_enum_input      = radio_enum_input,
3631         .vidioc_g_audio         = radio_g_audio,
3632         .vidioc_s_tuner         = radio_s_tuner,
3633         .vidioc_s_audio         = radio_s_audio,
3634         .vidioc_s_input         = radio_s_input,
3635         .vidioc_s_std           = radio_s_std,
3636         .vidioc_queryctrl       = radio_queryctrl,
3637         .vidioc_g_input         = radio_g_input,
3638         .vidioc_g_ctrl          = bttv_g_ctrl,
3639         .vidioc_s_ctrl          = bttv_s_ctrl,
3640         .vidioc_g_frequency     = bttv_g_frequency,
3641         .vidioc_s_frequency     = bttv_s_frequency,
3642 };
3643
3644 /* ----------------------------------------------------------------------- */
3645 /* some debug code                                                         */
3646
3647 static int bttv_risc_decode(u32 risc)
3648 {
3649         static char *instr[16] = {
3650                 [ BT848_RISC_WRITE     >> 28 ] = "write",
3651                 [ BT848_RISC_SKIP      >> 28 ] = "skip",
3652                 [ BT848_RISC_WRITEC    >> 28 ] = "writec",
3653                 [ BT848_RISC_JUMP      >> 28 ] = "jump",
3654                 [ BT848_RISC_SYNC      >> 28 ] = "sync",
3655                 [ BT848_RISC_WRITE123  >> 28 ] = "write123",
3656                 [ BT848_RISC_SKIP123   >> 28 ] = "skip123",
3657                 [ BT848_RISC_WRITE1S23 >> 28 ] = "write1s23",
3658         };
3659         static int incr[16] = {
3660                 [ BT848_RISC_WRITE     >> 28 ] = 2,
3661                 [ BT848_RISC_JUMP      >> 28 ] = 2,
3662                 [ BT848_RISC_SYNC      >> 28 ] = 2,
3663                 [ BT848_RISC_WRITE123  >> 28 ] = 5,
3664                 [ BT848_RISC_SKIP123   >> 28 ] = 2,
3665                 [ BT848_RISC_WRITE1S23 >> 28 ] = 3,
3666         };
3667         static char *bits[] = {
3668                 "be0",  "be1",  "be2",  "be3/resync",
3669                 "set0", "set1", "set2", "set3",
3670                 "clr0", "clr1", "clr2", "clr3",
3671                 "irq",  "res",  "eol",  "sol",
3672         };
3673         int i;
3674
3675         printk("0x%08x [ %s", risc,
3676                instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
3677         for (i = ARRAY_SIZE(bits)-1; i >= 0; i--)
3678                 if (risc & (1 << (i + 12)))
3679                         printk(" %s",bits[i]);
3680         printk(" count=%d ]\n", risc & 0xfff);
3681         return incr[risc >> 28] ? incr[risc >> 28] : 1;
3682 }
3683
3684 static void bttv_risc_disasm(struct bttv *btv,
3685                              struct btcx_riscmem *risc)
3686 {
3687         unsigned int i,j,n;
3688
3689         printk("%s: risc disasm: %p [dma=0x%08lx]\n",
3690                btv->c.name, risc->cpu, (unsigned long)risc->dma);
3691         for (i = 0; i < (risc->size >> 2); i += n) {
3692                 printk("%s:   0x%lx: ", btv->c.name,
3693                        (unsigned long)(risc->dma + (i<<2)));
3694                 n = bttv_risc_decode(risc->cpu[i]);
3695                 for (j = 1; j < n; j++)
3696                         printk("%s:   0x%lx: 0x%08x [ arg #%d ]\n",
3697                                btv->c.name, (unsigned long)(risc->dma + ((i+j)<<2)),
3698                                risc->cpu[i+j], j);
3699                 if (0 == risc->cpu[i])
3700                         break;
3701         }
3702 }
3703
3704 static void bttv_print_riscaddr(struct bttv *btv)
3705 {
3706         printk("  main: %08Lx\n",
3707                (unsigned long long)btv->main.dma);
3708         printk("  vbi : o=%08Lx e=%08Lx\n",
3709                btv->cvbi ? (unsigned long long)btv->cvbi->top.dma : 0,
3710                btv->cvbi ? (unsigned long long)btv->cvbi->bottom.dma : 0);
3711         printk("  cap : o=%08Lx e=%08Lx\n",
3712                btv->curr.top    ? (unsigned long long)btv->curr.top->top.dma : 0,
3713                btv->curr.bottom ? (unsigned long long)btv->curr.bottom->bottom.dma : 0);
3714         printk("  scr : o=%08Lx e=%08Lx\n",
3715                btv->screen ? (unsigned long long)btv->screen->top.dma : 0,
3716                btv->screen ? (unsigned long long)btv->screen->bottom.dma : 0);
3717         bttv_risc_disasm(btv, &btv->main);
3718 }
3719
3720 /* ----------------------------------------------------------------------- */
3721 /* irq handler                                                             */
3722
3723 static char *irq_name[] = {
3724         "FMTCHG",  // format change detected (525 vs. 625)
3725         "VSYNC",   // vertical sync (new field)
3726         "HSYNC",   // horizontal sync
3727         "OFLOW",   // chroma/luma AGC overflow
3728         "HLOCK",   // horizontal lock changed
3729         "VPRES",   // video presence changed
3730         "6", "7",
3731         "I2CDONE", // hw irc operation finished
3732         "GPINT",   // gpio port triggered irq
3733         "10",
3734         "RISCI",   // risc instruction triggered irq
3735         "FBUS",    // pixel data fifo dropped data (high pci bus latencies)
3736         "FTRGT",   // pixel data fifo overrun
3737         "FDSR",    // fifo data stream resyncronisation
3738         "PPERR",   // parity error (data transfer)
3739         "RIPERR",  // parity error (read risc instructions)
3740         "PABORT",  // pci abort
3741         "OCERR",   // risc instruction error
3742         "SCERR",   // syncronisation error
3743 };
3744
3745 static void bttv_print_irqbits(u32 print, u32 mark)
3746 {
3747         unsigned int i;
3748
3749         printk("bits:");
3750         for (i = 0; i < ARRAY_SIZE(irq_name); i++) {
3751                 if (print & (1 << i))
3752                         printk(" %s",irq_name[i]);
3753                 if (mark & (1 << i))
3754                         printk("*");
3755         }
3756 }
3757
3758 static void bttv_irq_debug_low_latency(struct bttv *btv, u32 rc)
3759 {
3760         printk("bttv%d: irq: skipped frame [main=%lx,o_vbi=%lx,o_field=%lx,rc=%lx]\n",
3761                btv->c.nr,
3762                (unsigned long)btv->main.dma,
3763                (unsigned long)btv->main.cpu[RISC_SLOT_O_VBI+1],
3764                (unsigned long)btv->main.cpu[RISC_SLOT_O_FIELD+1],
3765                (unsigned long)rc);
3766
3767         if (0 == (btread(BT848_DSTATUS) & BT848_DSTATUS_HLOC)) {
3768                 printk("bttv%d: Oh, there (temporarely?) is no input signal. "
3769                        "Ok, then this is harmless, don't worry ;)\n",
3770                        btv->c.nr);
3771                 return;
3772         }
3773         printk("bttv%d: Uhm. Looks like we have unusual high IRQ latencies.\n",
3774                btv->c.nr);
3775         printk("bttv%d: Lets try to catch the culpit red-handed ...\n",
3776                btv->c.nr);
3777         dump_stack();
3778 }
3779
3780 static int
3781 bttv_irq_next_video(struct bttv *btv, struct bttv_buffer_set *set)
3782 {
3783         struct bttv_buffer *item;
3784
3785         memset(set,0,sizeof(*set));
3786
3787         /* capture request ? */
3788         if (!list_empty(&btv->capture)) {
3789                 set->frame_irq = 1;
3790                 item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
3791                 if (V4L2_FIELD_HAS_TOP(item->vb.field))
3792                         set->top    = item;
3793                 if (V4L2_FIELD_HAS_BOTTOM(item->vb.field))
3794                         set->bottom = item;
3795
3796                 /* capture request for other field ? */
3797                 if (!V4L2_FIELD_HAS_BOTH(item->vb.field) &&
3798                     (item->vb.queue.next != &btv->capture)) {
3799                         item = list_entry(item->vb.queue.next, struct bttv_buffer, vb.queue);
3800                         if (!V4L2_FIELD_HAS_BOTH(item->vb.field)) {
3801                                 if (NULL == set->top &&
3802                                     V4L2_FIELD_TOP == item->vb.field) {
3803                                         set->top = item;
3804                                 }
3805                                 if (NULL == set->bottom &&
3806                                     V4L2_FIELD_BOTTOM == item->vb.field) {
3807                                         set->bottom = item;
3808                                 }
3809                                 if (NULL != set->top  &&  NULL != set->bottom)
3810                                         set->top_irq = 2;
3811                         }
3812                 }
3813         }
3814
3815         /* screen overlay ? */
3816         if (NULL != btv->screen) {
3817                 if (V4L2_FIELD_HAS_BOTH(btv->screen->vb.field)) {
3818                         if (NULL == set->top && NULL == set->bottom) {
3819                                 set->top    = btv->screen;
3820                                 set->bottom = btv->screen;
3821                         }
3822                 } else {
3823                         if (V4L2_FIELD_TOP == btv->screen->vb.field &&
3824                             NULL == set->top) {
3825                                 set->top = btv->screen;
3826                         }
3827                         if (V4L2_FIELD_BOTTOM == btv->screen->vb.field &&
3828                             NULL == set->bottom) {
3829                                 set->bottom = btv->screen;
3830                         }
3831                 }
3832         }
3833
3834         dprintk("bttv%d: next set: top=%p bottom=%p [screen=%p,irq=%d,%d]\n",
3835                 btv->c.nr,set->top, set->bottom,
3836                 btv->screen,set->frame_irq,set->top_irq);
3837         return 0;
3838 }
3839
3840 static void
3841 bttv_irq_wakeup_video(struct bttv *btv, struct bttv_buffer_set *wakeup,
3842                       struct bttv_buffer_set *curr, unsigned int state)
3843 {
3844         struct timeval ts;
3845
3846         do_gettimeofday(&ts);
3847
3848         if (wakeup->top == wakeup->bottom) {
3849                 if (NULL != wakeup->top && curr->top != wakeup->top) {
3850                         if (irq_debug > 1)
3851                                 printk("bttv%d: wakeup: both=%p\n",btv->c.nr,wakeup->top);
3852                         wakeup->top->vb.ts = ts;
3853                         wakeup->top->vb.field_count = btv->field_count;
3854                         wakeup->top->vb.state = state;
3855                         wake_up(&wakeup->top->vb.done);
3856                 }
3857         } else {
3858                 if (NULL != wakeup->top && curr->top != wakeup->top) {
3859                         if (irq_debug > 1)
3860                                 printk("bttv%d: wakeup: top=%p\n",btv->c.nr,wakeup->top);
3861                         wakeup->top->vb.ts = ts;
3862                         wakeup->top->vb.field_count = btv->field_count;
3863                         wakeup->top->vb.state = state;
3864                         wake_up(&wakeup->top->vb.done);
3865                 }
3866                 if (NULL != wakeup->bottom && curr->bottom != wakeup->bottom) {
3867                         if (irq_debug > 1)
3868                                 printk("bttv%d: wakeup: bottom=%p\n",btv->c.nr,wakeup->bottom);
3869                         wakeup->bottom->vb.ts = ts;
3870                         wakeup->bottom->vb.field_count = btv->field_count;
3871                         wakeup->bottom->vb.state = state;
3872                         wake_up(&wakeup->bottom->vb.done);
3873                 }
3874         }
3875 }
3876
3877 static void
3878 bttv_irq_wakeup_vbi(struct bttv *btv, struct bttv_buffer *wakeup,
3879                     unsigned int state)
3880 {
3881         struct timeval ts;
3882
3883         if (NULL == wakeup)
3884                 return;
3885
3886         do_gettimeofday(&ts);
3887         wakeup->vb.ts = ts;
3888         wakeup->vb.field_count = btv->field_count;
3889         wakeup->vb.state = state;
3890         wake_up(&wakeup->vb.done);
3891 }
3892
3893 static void bttv_irq_timeout(unsigned long data)
3894 {
3895         struct bttv *btv = (struct bttv *)data;
3896         struct bttv_buffer_set old,new;
3897         struct bttv_buffer *ovbi;
3898         struct bttv_buffer *item;
3899         unsigned long flags;
3900
3901         if (bttv_verbose) {
3902                 printk(KERN_INFO "bttv%d: timeout: drop=%d irq=%d/%d, risc=%08x, ",
3903                        btv->c.nr, btv->framedrop, btv->irq_me, btv->irq_total,
3904                        btread(BT848_RISC_COUNT));
3905                 bttv_print_irqbits(btread(BT848_INT_STAT),0);
3906                 printk("\n");
3907         }
3908
3909         spin_lock_irqsave(&btv->s_lock,flags);
3910
3911         /* deactivate stuff */
3912         memset(&new,0,sizeof(new));
3913         old  = btv->curr;
3914         ovbi = btv->cvbi;
3915         btv->curr = new;
3916         btv->cvbi = NULL;
3917         btv->loop_irq = 0;
3918         bttv_buffer_activate_video(btv, &new);
3919         bttv_buffer_activate_vbi(btv,   NULL);
3920         bttv_set_dma(btv, 0);
3921
3922         /* wake up */
3923         bttv_irq_wakeup_video(btv, &old, &new, VIDEOBUF_ERROR);
3924         bttv_irq_wakeup_vbi(btv, ovbi, VIDEOBUF_ERROR);
3925
3926         /* cancel all outstanding capture / vbi requests */
3927         while (!list_empty(&btv->capture)) {
3928                 item = list_entry(btv->capture.next, struct bttv_buffer, vb.queue);
3929                 list_del(&item->vb.queue);
3930                 item->vb.state = VIDEOBUF_ERROR;
3931                 wake_up(&item->vb.done);
3932         }
3933         while (!list_empty(&btv->vcapture)) {
3934                 item = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
3935                 list_del(&item->vb.queue);
3936                 item->vb.state = VIDEOBUF_ERROR;
3937                 wake_up(&item->vb.done);
3938         }
3939
3940         btv->errors++;
3941         spin_unlock_irqrestore(&btv->s_lock,flags);
3942 }
3943
3944 static void
3945 bttv_irq_wakeup_top(struct bttv *btv)
3946 {
3947         struct bttv_buffer *wakeup = btv->curr.top;
3948
3949         if (NULL == wakeup)
3950                 return;
3951
3952         spin_lock(&btv->s_lock);
3953         btv->curr.top_irq = 0;
3954         btv->curr.top = NULL;
3955         bttv_risc_hook(btv, RISC_SLOT_O_FIELD, NULL, 0);
3956
3957         do_gettimeofday(&wakeup->vb.ts);
3958         wakeup->vb.field_count = btv->field_count;
3959         wakeup->vb.state = VIDEOBUF_DONE;
3960         wake_up(&wakeup->vb.done);
3961         spin_unlock(&btv->s_lock);
3962 }
3963
3964 static inline int is_active(struct btcx_riscmem *risc, u32 rc)
3965 {
3966         if (rc < risc->dma)
3967                 return 0;
3968         if (rc > risc->dma + risc->size)
3969                 return 0;
3970         return 1;
3971 }
3972
3973 static void
3974 bttv_irq_switch_video(struct bttv *btv)
3975 {
3976         struct bttv_buffer_set new;
3977         struct bttv_buffer_set old;
3978         dma_addr_t rc;
3979
3980         spin_lock(&btv->s_lock);
3981
3982         /* new buffer set */
3983         bttv_irq_next_video(btv, &new);
3984         rc = btread(BT848_RISC_COUNT);
3985         if ((btv->curr.top    && is_active(&btv->curr.top->top,       rc)) ||
3986             (btv->curr.bottom && is_active(&btv->curr.bottom->bottom, rc))) {
3987                 btv->framedrop++;
3988                 if (debug_latency)
3989                         bttv_irq_debug_low_latency(btv, rc);
3990                 spin_unlock(&btv->s_lock);
3991                 return;
3992         }
3993
3994         /* switch over */
3995         old = btv->curr;
3996         btv->curr = new;
3997         btv->loop_irq &= ~1;
3998         bttv_buffer_activate_video(btv, &new);
3999         bttv_set_dma(btv, 0);
4000
4001         /* switch input */
4002         if (UNSET != btv->new_input) {
4003                 video_mux(btv,btv->new_input);
4004                 btv->new_input = UNSET;
4005         }
4006
4007         /* wake up finished buffers */
4008         bttv_irq_wakeup_video(btv, &old, &new, VIDEOBUF_DONE);
4009         spin_unlock(&btv->s_lock);
4010 }
4011
4012 static void
4013 bttv_irq_switch_vbi(struct bttv *btv)
4014 {
4015         struct bttv_buffer *new = NULL;
4016         struct bttv_buffer *old;
4017         u32 rc;
4018
4019         spin_lock(&btv->s_lock);
4020
4021         if (!list_empty(&btv->vcapture))
4022                 new = list_entry(btv->vcapture.next, struct bttv_buffer, vb.queue);
4023         old = btv->cvbi;
4024
4025         rc = btread(BT848_RISC_COUNT);
4026         if (NULL != old && (is_active(&old->top,    rc) ||
4027                             is_active(&old->bottom, rc))) {
4028                 btv->framedrop++;
4029                 if (debug_latency)
4030                         bttv_irq_debug_low_latency(btv, rc);
4031                 spin_unlock(&btv->s_lock);
4032                 return;
4033         }
4034
4035         /* switch */
4036         btv->cvbi = new;
4037         btv->loop_irq &= ~4;
4038         bttv_buffer_activate_vbi(btv, new);
4039         bttv_set_dma(btv, 0);
4040
4041         bttv_irq_wakeup_vbi(btv, old, VIDEOBUF_DONE);
4042         spin_unlock(&btv->s_lock);
4043 }
4044
4045 static irqreturn_t bttv_irq(int irq, void *dev_id)
4046 {
4047         u32 stat,astat;
4048         u32 dstat;
4049         int count;
4050         struct bttv *btv;
4051         int handled = 0;
4052
4053         btv=(struct bttv *)dev_id;
4054
4055         if (btv->custom_irq)
4056                 handled = btv->custom_irq(btv);
4057
4058         count=0;
4059         while (1) {
4060                 /* get/clear interrupt status bits */
4061                 stat=btread(BT848_INT_STAT);
4062                 astat=stat&btread(BT848_INT_MASK);
4063                 if (!astat)
4064                         break;
4065                 handled = 1;
4066                 btwrite(stat,BT848_INT_STAT);
4067
4068                 /* get device status bits */
4069                 dstat=btread(BT848_DSTATUS);
4070
4071                 if (irq_debug) {
4072                         printk(KERN_DEBUG "bttv%d: irq loop=%d fc=%d "
4073                                "riscs=%x, riscc=%08x, ",
4074                                btv->c.nr, count, btv->field_count,
4075                                stat>>28, btread(BT848_RISC_COUNT));
4076                         bttv_print_irqbits(stat,astat);
4077                         if (stat & BT848_INT_HLOCK)
4078                                 printk("   HLOC => %s", (dstat & BT848_DSTATUS_HLOC)
4079                                        ? "yes" : "no");
4080                         if (stat & BT848_INT_VPRES)
4081                                 printk("   PRES => %s", (dstat & BT848_DSTATUS_PRES)
4082                                        ? "yes" : "no");
4083                         if (stat & BT848_INT_FMTCHG)
4084                                 printk("   NUML => %s", (dstat & BT848_DSTATUS_NUML)
4085                                        ? "625" : "525");
4086                         printk("\n");
4087                 }
4088
4089                 if (astat&BT848_INT_VSYNC)
4090                         btv->field_count++;
4091
4092                 if ((astat & BT848_INT_GPINT) && btv->remote) {
4093                         wake_up(&btv->gpioq);
4094                         bttv_input_irq(btv);
4095                 }
4096
4097                 if (astat & BT848_INT_I2CDONE) {
4098                         btv->i2c_done = stat;
4099                         wake_up(&btv->i2c_queue);
4100                 }
4101
4102                 if ((astat & BT848_INT_RISCI)  &&  (stat & (4<<28)))
4103                         bttv_irq_switch_vbi(btv);
4104
4105                 if ((astat & BT848_INT_RISCI)  &&  (stat & (2<<28)))
4106                         bttv_irq_wakeup_top(btv);
4107
4108                 if ((astat & BT848_INT_RISCI)  &&  (stat & (1<<28)))
4109                         bttv_irq_switch_video(btv);
4110
4111                 if ((astat & BT848_INT_HLOCK)  &&  btv->opt_automute)
4112                         audio_mute(btv, btv->mute);  /* trigger automute */
4113
4114                 if (astat & (BT848_INT_SCERR|BT848_INT_OCERR)) {
4115                         printk(KERN_INFO "bttv%d: %s%s @ %08x,",btv->c.nr,
4116                                (astat & BT848_INT_SCERR) ? "SCERR" : "",
4117                                (astat & BT848_INT_OCERR) ? "OCERR" : "",
4118                                btread(BT848_RISC_COUNT));
4119                         bttv_print_irqbits(stat,astat);
4120                         printk("\n");
4121                         if (bttv_debug)
4122                                 bttv_print_riscaddr(btv);
4123                 }
4124                 if (fdsr && astat & BT848_INT_FDSR) {
4125                         printk(KERN_INFO "bttv%d: FDSR @ %08x\n",
4126                                btv->c.nr,btread(BT848_RISC_COUNT));
4127                         if (bttv_debug)
4128                                 bttv_print_riscaddr(btv);
4129                 }
4130
4131                 count++;
4132                 if (count > 4) {
4133
4134                         if (count > 8 || !(astat & BT848_INT_GPINT)) {
4135                                 btwrite(0, BT848_INT_MASK);
4136
4137                                 printk(KERN_ERR
4138                                            "bttv%d: IRQ lockup, cleared int mask [", btv->c.nr);
4139                         } else {
4140                                 printk(KERN_ERR
4141                                            "bttv%d: IRQ lockup, clearing GPINT from int mask [", btv->c.nr);
4142
4143                                 btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT),
4144                                                 BT848_INT_MASK);
4145                         };
4146
4147                         bttv_print_irqbits(stat,astat);
4148
4149                         printk("]\n");
4150                 }
4151         }
4152         btv->irq_total++;
4153         if (handled)
4154                 btv->irq_me++;
4155         return IRQ_RETVAL(handled);
4156 }
4157
4158
4159 /* ----------------------------------------------------------------------- */
4160 /* initialitation                                                          */
4161
4162 static struct video_device *vdev_init(struct bttv *btv,
4163                                       const struct video_device *template,
4164                                       const char *type_name,
4165                                       const int type)
4166 {
4167         struct video_device *vfd;
4168
4169         vfd = video_device_alloc();
4170         if (NULL == vfd)
4171                 return NULL;
4172         *vfd = *template;
4173         vfd->minor   = -1;
4174         vfd->dev     = &btv->c.pci->dev;
4175         vfd->release = video_device_release;
4176         vfd->type    = type;
4177         snprintf(vfd->name, sizeof(vfd->name), "BT%d%s %s (%s)",
4178                  btv->id, (btv->id==848 && btv->revision==0x12) ? "A" : "",
4179                  type_name, bttv_tvcards[btv->c.type].name);
4180         return vfd;
4181 }
4182
4183 static void bttv_unregister_video(struct bttv *btv)
4184 {
4185         if (btv->video_dev) {
4186                 if (-1 != btv->video_dev->minor)
4187                         video_unregister_device(btv->video_dev);
4188                 else
4189                         video_device_release(btv->video_dev);
4190                 btv->video_dev = NULL;
4191         }
4192         if (btv->vbi_dev) {
4193                 if (-1 != btv->vbi_dev->minor)
4194                         video_unregister_device(btv->vbi_dev);
4195                 else
4196                         video_device_release(btv->vbi_dev);
4197                 btv->vbi_dev = NULL;
4198         }
4199         if (btv->radio_dev) {
4200                 if (-1 != btv->radio_dev->minor)
4201                         video_unregister_device(btv->radio_dev);
4202                 else
4203                         video_device_release(btv->radio_dev);
4204                 btv->radio_dev = NULL;
4205         }
4206 }
4207
4208 /* register video4linux devices */
4209 static int __devinit bttv_register_video(struct bttv *btv)
4210 {
4211         int video_type = VID_TYPE_CAPTURE |
4212                          VID_TYPE_TUNER   |
4213                          VID_TYPE_CLIPPING|
4214                          VID_TYPE_SCALES;
4215
4216         if (no_overlay <= 0) {
4217                 bttv_video_template.type |= VID_TYPE_OVERLAY;
4218         } else {
4219                 printk("bttv: Overlay support disabled.\n");
4220         }
4221
4222         /* video */
4223         btv->video_dev = vdev_init(btv, &bttv_video_template,
4224                                    "video", video_type);
4225
4226         if (NULL == btv->video_dev)
4227                 goto err;
4228         if (video_register_device(btv->video_dev,VFL_TYPE_GRABBER,video_nr)<0)
4229                 goto err;
4230         printk(KERN_INFO "bttv%d: registered device video%d\n",
4231                btv->c.nr,btv->video_dev->minor & 0x1f);
4232         if (device_create_file(&btv->video_dev->class_dev,
4233                                      &dev_attr_card)<0) {
4234                 printk(KERN_ERR "bttv%d: device_create_file 'card' "
4235                        "failed\n", btv->c.nr);
4236                 goto err;
4237         }
4238
4239         /* vbi */
4240         btv->vbi_dev = vdev_init(btv, &bttv_video_template,
4241                                  "vbi", VID_TYPE_TUNER | VID_TYPE_TELETEXT);
4242
4243         if (NULL == btv->vbi_dev)
4244                 goto err;
4245         if (video_register_device(btv->vbi_dev,VFL_TYPE_VBI,vbi_nr)<0)
4246                 goto err;
4247         printk(KERN_INFO "bttv%d: registered device vbi%d\n",
4248                btv->c.nr,btv->vbi_dev->minor & 0x1f);
4249
4250         if (!btv->has_radio)
4251                 return 0;
4252         /* radio */
4253         btv->radio_dev = vdev_init(btv, &radio_template,
4254                                    "radio", VID_TYPE_TUNER);
4255         if (NULL == btv->radio_dev)
4256                 goto err;
4257         if (video_register_device(btv->radio_dev, VFL_TYPE_RADIO,radio_nr)<0)
4258                 goto err;
4259         printk(KERN_INFO "bttv%d: registered device radio%d\n",
4260                btv->c.nr,btv->radio_dev->minor & 0x1f);
4261
4262         /* all done */
4263         return 0;
4264
4265  err:
4266         bttv_unregister_video(btv);
4267         return -1;
4268 }
4269
4270
4271 /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
4272 /* response on cards with no firmware is not enabled by OF */
4273 static void pci_set_command(struct pci_dev *dev)
4274 {
4275 #if defined(__powerpc__)
4276         unsigned int cmd;
4277
4278         pci_read_config_dword(dev, PCI_COMMAND, &cmd);
4279         cmd = (cmd | PCI_COMMAND_MEMORY );
4280         pci_write_config_dword(dev, PCI_COMMAND, cmd);
4281 #endif
4282 }
4283
4284 static int __devinit bttv_probe(struct pci_dev *dev,
4285                                 const struct pci_device_id *pci_id)
4286 {
4287         int result;
4288         unsigned char lat;
4289         struct bttv *btv;
4290
4291         if (bttv_num == BTTV_MAX)
4292                 return -ENOMEM;
4293         printk(KERN_INFO "bttv: Bt8xx card found (%d).\n", bttv_num);
4294         btv=&bttvs[bttv_num];
4295         memset(btv,0,sizeof(*btv));
4296         btv->c.nr  = bttv_num;
4297         sprintf(btv->c.name,"bttv%d",btv->c.nr);
4298
4299         /* initialize structs / fill in defaults */
4300         mutex_init(&btv->lock);
4301         spin_lock_init(&btv->s_lock);
4302         spin_lock_init(&btv->gpio_lock);
4303         init_waitqueue_head(&btv->gpioq);
4304         init_waitqueue_head(&btv->i2c_queue);
4305         INIT_LIST_HEAD(&btv->c.subs);
4306         INIT_LIST_HEAD(&btv->capture);
4307         INIT_LIST_HEAD(&btv->vcapture);
4308         v4l2_prio_init(&btv->prio);
4309
4310         init_timer(&btv->timeout);
4311         btv->timeout.function = bttv_irq_timeout;
4312         btv->timeout.data     = (unsigned long)btv;
4313
4314         btv->i2c_rc = -1;
4315         btv->tuner_type  = UNSET;
4316         btv->new_input   = UNSET;
4317         btv->has_radio=radio[btv->c.nr];
4318
4319         /* pci stuff (init, get irq/mmio, ... */
4320         btv->c.pci = dev;
4321         btv->id  = dev->device;
4322         if (pci_enable_device(dev)) {
4323                 printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4324                        btv->c.nr);
4325                 return -EIO;
4326         }
4327         if (pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
4328                 printk(KERN_WARNING "bttv%d: No suitable DMA available.\n",
4329                        btv->c.nr);
4330                 return -EIO;
4331         }
4332         if (!request_mem_region(pci_resource_start(dev,0),
4333                                 pci_resource_len(dev,0),
4334                                 btv->c.name)) {
4335                 printk(KERN_WARNING "bttv%d: can't request iomem (0x%llx).\n",
4336                        btv->c.nr,
4337                        (unsigned long long)pci_resource_start(dev,0));
4338                 return -EBUSY;
4339         }
4340         pci_set_master(dev);
4341         pci_set_command(dev);
4342         pci_set_drvdata(dev,btv);
4343
4344         pci_read_config_byte(dev, PCI_CLASS_REVISION, &btv->revision);
4345         pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
4346         printk(KERN_INFO "bttv%d: Bt%d (rev %d) at %s, ",
4347                bttv_num,btv->id, btv->revision, pci_name(dev));
4348         printk("irq: %d, latency: %d, mmio: 0x%llx\n",
4349                btv->c.pci->irq, lat,
4350                (unsigned long long)pci_resource_start(dev,0));
4351         schedule();
4352
4353         btv->bt848_mmio = ioremap(pci_resource_start(dev, 0), 0x1000);
4354         if (NULL == btv->bt848_mmio) {
4355                 printk("bttv%d: ioremap() failed\n", btv->c.nr);
4356                 result = -EIO;
4357                 goto fail1;
4358         }
4359
4360         /* identify card */
4361         bttv_idcard(btv);
4362
4363         /* disable irqs, register irq handler */
4364         btwrite(0, BT848_INT_MASK);
4365         result = request_irq(btv->c.pci->irq, bttv_irq,
4366                              IRQF_SHARED | IRQF_DISABLED,btv->c.name,(void *)btv);
4367         if (result < 0) {
4368                 printk(KERN_ERR "bttv%d: can't get IRQ %d\n",
4369                        bttv_num,btv->c.pci->irq);
4370                 goto fail1;
4371         }
4372
4373         if (0 != bttv_handle_chipset(btv)) {
4374                 result = -EIO;
4375                 goto fail2;
4376         }
4377
4378         /* init options from insmod args */
4379         btv->opt_combfilter = combfilter;
4380         btv->opt_lumafilter = lumafilter;
4381         btv->opt_automute   = automute;
4382         btv->opt_chroma_agc = chroma_agc;
4383         btv->opt_adc_crush  = adc_crush;
4384         btv->opt_vcr_hack   = vcr_hack;
4385         btv->opt_whitecrush_upper  = whitecrush_upper;
4386         btv->opt_whitecrush_lower  = whitecrush_lower;
4387         btv->opt_uv_ratio   = uv_ratio;
4388         btv->opt_full_luma_range   = full_luma_range;
4389         btv->opt_coring     = coring;
4390
4391         /* fill struct bttv with some useful defaults */
4392         btv->init.btv         = btv;
4393         btv->init.ov.w.width  = 320;
4394         btv->init.ov.w.height = 240;
4395         btv->init.fmt         = format_by_fourcc(V4L2_PIX_FMT_BGR24);
4396         btv->init.width       = 320;
4397         btv->init.height      = 240;
4398         btv->input = 0;
4399
4400         /* initialize hardware */
4401         if (bttv_gpio)
4402                 bttv_gpio_tracking(btv,"pre-init");
4403
4404         bttv_risc_init_main(btv);
4405         init_bt848(btv);
4406
4407         /* gpio */
4408         btwrite(0x00, BT848_GPIO_REG_INP);
4409         btwrite(0x00, BT848_GPIO_OUT_EN);
4410         if (bttv_verbose)
4411                 bttv_gpio_tracking(btv,"init");
4412
4413         /* needs to be done before i2c is registered */
4414         bttv_init_card1(btv);
4415
4416         /* register i2c + gpio */
4417         init_bttv_i2c(btv);
4418
4419         /* some card-specific stuff (needs working i2c) */
4420         bttv_init_card2(btv);
4421         init_irqreg(btv);
4422
4423         /* register video4linux + input */
4424         if (!bttv_tvcards[btv->c.type].no_video) {
4425                 bttv_register_video(btv);
4426                 bt848_bright(btv,32768);
4427                 bt848_contrast(btv,32768);
4428                 bt848_hue(btv,32768);
4429                 bt848_sat(btv,32768);
4430                 audio_mute(btv, 1);
4431                 set_input(btv, 0, btv->tvnorm);
4432                 bttv_crop_reset(&btv->crop[0], btv->tvnorm);
4433                 btv->crop[1] = btv->crop[0]; /* current = default */
4434                 disclaim_vbi_lines(btv);
4435                 disclaim_video_lines(btv);
4436         }
4437
4438         /* add subdevices and autoload dvb-bt8xx if needed */
4439         if (bttv_tvcards[btv->c.type].has_dvb) {
4440                 bttv_sub_add_device(&btv->c, "dvb");
4441                 request_modules(btv);
4442         }
4443
4444         bttv_input_init(btv);
4445
4446         /* everything is fine */
4447         bttv_num++;
4448         return 0;
4449
4450  fail2:
4451         free_irq(btv->c.pci->irq,btv);
4452
4453  fail1:
4454         if (btv->bt848_mmio)
4455                 iounmap(btv->bt848_mmio);
4456         release_mem_region(pci_resource_start(btv->c.pci,0),
4457                            pci_resource_len(btv->c.pci,0));
4458         pci_set_drvdata(dev,NULL);
4459         return result;
4460 }
4461
4462 static void __devexit bttv_remove(struct pci_dev *pci_dev)
4463 {
4464         struct bttv *btv = pci_get_drvdata(pci_dev);
4465
4466         if (bttv_verbose)
4467                 printk("bttv%d: unloading\n",btv->c.nr);
4468
4469         /* shutdown everything (DMA+IRQs) */
4470         btand(~15, BT848_GPIO_DMA_CTL);
4471         btwrite(0, BT848_INT_MASK);
4472         btwrite(~0x0, BT848_INT_STAT);
4473         btwrite(0x0, BT848_GPIO_OUT_EN);
4474         if (bttv_gpio)
4475                 bttv_gpio_tracking(btv,"cleanup");
4476
4477         /* tell gpio modules we are leaving ... */
4478         btv->shutdown=1;
4479         wake_up(&btv->gpioq);
4480         bttv_input_fini(btv);
4481         bttv_sub_del_devices(&btv->c);
4482
4483         /* unregister i2c_bus + input */
4484         fini_bttv_i2c(btv);
4485
4486         /* unregister video4linux */
4487         bttv_unregister_video(btv);
4488
4489         /* free allocated memory */
4490         btcx_riscmem_free(btv->c.pci,&btv->main);
4491
4492         /* free ressources */
4493         free_irq(btv->c.pci->irq,btv);
4494         iounmap(btv->bt848_mmio);
4495         release_mem_region(pci_resource_start(btv->c.pci,0),
4496                            pci_resource_len(btv->c.pci,0));
4497
4498         pci_set_drvdata(pci_dev, NULL);
4499         return;
4500 }
4501
4502 #ifdef CONFIG_PM
4503 static int bttv_suspend(struct pci_dev *pci_dev, pm_message_t state)
4504 {
4505         struct bttv *btv = pci_get_drvdata(pci_dev);
4506         struct bttv_buffer_set idle;
4507         unsigned long flags;
4508
4509         dprintk("bttv%d: suspend %d\n", btv->c.nr, state.event);
4510
4511         /* stop dma + irqs */
4512         spin_lock_irqsave(&btv->s_lock,flags);
4513         memset(&idle, 0, sizeof(idle));
4514         btv->state.video = btv->curr;
4515         btv->state.vbi   = btv->cvbi;
4516         btv->state.loop_irq = btv->loop_irq;
4517         btv->curr = idle;
4518         btv->loop_irq = 0;
4519         bttv_buffer_activate_video(btv, &idle);
4520         bttv_buffer_activate_vbi(btv, NULL);
4521         bttv_set_dma(btv, 0);
4522         btwrite(0, BT848_INT_MASK);
4523         spin_unlock_irqrestore(&btv->s_lock,flags);
4524
4525         /* save bt878 state */
4526         btv->state.gpio_enable = btread(BT848_GPIO_OUT_EN);
4527         btv->state.gpio_data   = gpio_read();
4528
4529         /* save pci state */
4530         pci_save_state(pci_dev);
4531         if (0 != pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state))) {
4532                 pci_disable_device(pci_dev);
4533                 btv->state.disabled = 1;
4534         }
4535         return 0;
4536 }
4537
4538 static int bttv_resume(struct pci_dev *pci_dev)
4539 {
4540         struct bttv *btv = pci_get_drvdata(pci_dev);
4541         unsigned long flags;
4542         int err;
4543
4544         dprintk("bttv%d: resume\n", btv->c.nr);
4545
4546         /* restore pci state */
4547         if (btv->state.disabled) {
4548                 err=pci_enable_device(pci_dev);
4549                 if (err) {
4550                         printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4551                                                                 btv->c.nr);
4552                         return err;
4553                 }
4554                 btv->state.disabled = 0;
4555         }
4556         err=pci_set_power_state(pci_dev, PCI_D0);
4557         if (err) {
4558                 pci_disable_device(pci_dev);
4559                 printk(KERN_WARNING "bttv%d: Can't enable device.\n",
4560                                                         btv->c.nr);
4561                 btv->state.disabled = 1;
4562                 return err;
4563         }
4564
4565         pci_restore_state(pci_dev);
4566
4567         /* restore bt878 state */
4568         bttv_reinit_bt848(btv);
4569         gpio_inout(0xffffff, btv->state.gpio_enable);
4570         gpio_write(btv->state.gpio_data);
4571
4572         /* restart dma */
4573         spin_lock_irqsave(&btv->s_lock,flags);
4574         btv->curr = btv->state.video;
4575         btv->cvbi = btv->state.vbi;
4576         btv->loop_irq = btv->state.loop_irq;
4577         bttv_buffer_activate_video(btv, &btv->curr);
4578         bttv_buffer_activate_vbi(btv, btv->cvbi);
4579         bttv_set_dma(btv, 0);
4580         spin_unlock_irqrestore(&btv->s_lock,flags);
4581         return 0;
4582 }
4583 #endif
4584
4585 static struct pci_device_id bttv_pci_tbl[] = {
4586         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT848,
4587          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4588         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT849,
4589          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4590         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT878,
4591          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4592         {PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BT879,
4593          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4594         {0,}
4595 };
4596
4597 MODULE_DEVICE_TABLE(pci, bttv_pci_tbl);
4598
4599 static struct pci_driver bttv_pci_driver = {
4600         .name     = "bttv",
4601         .id_table = bttv_pci_tbl,
4602         .probe    = bttv_probe,
4603         .remove   = __devexit_p(bttv_remove),
4604 #ifdef CONFIG_PM
4605         .suspend  = bttv_suspend,
4606         .resume   = bttv_resume,
4607 #endif
4608 };
4609
4610 static int __init bttv_init_module(void)
4611 {
4612         int ret;
4613
4614         bttv_num = 0;
4615
4616         printk(KERN_INFO "bttv: driver version %d.%d.%d loaded\n",
4617                (BTTV_VERSION_CODE >> 16) & 0xff,
4618                (BTTV_VERSION_CODE >> 8) & 0xff,
4619                BTTV_VERSION_CODE & 0xff);
4620 #ifdef SNAPSHOT
4621         printk(KERN_INFO "bttv: snapshot date %04d-%02d-%02d\n",
4622                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
4623 #endif
4624         if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
4625                 gbuffers = 2;
4626         if (gbufsize < 0 || gbufsize > BTTV_MAX_FBUF)
4627                 gbufsize = BTTV_MAX_FBUF;
4628         gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;
4629         if (bttv_verbose)
4630                 printk(KERN_INFO "bttv: using %d buffers with %dk (%d pages) each for capture\n",
4631                        gbuffers, gbufsize >> 10, gbufsize >> PAGE_SHIFT);
4632
4633         bttv_check_chipset();
4634
4635         ret = bus_register(&bttv_sub_bus_type);
4636         if (ret < 0) {
4637                 printk(KERN_WARNING "bttv: bus_register error: %d\n", ret);
4638                 return ret;
4639         }
4640         ret = pci_register_driver(&bttv_pci_driver);
4641         if (ret < 0)
4642                 bus_unregister(&bttv_sub_bus_type);
4643
4644         return ret;
4645 }
4646
4647 static void __exit bttv_cleanup_module(void)
4648 {
4649         pci_unregister_driver(&bttv_pci_driver);
4650         bus_unregister(&bttv_sub_bus_type);
4651 }
4652
4653 module_init(bttv_init_module);
4654 module_exit(bttv_cleanup_module);
4655
4656 /*
4657  * Local variables:
4658  * c-basic-offset: 8
4659  * End:
4660  */