git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/vino.c

   1 /*
   2  * Driver for the VINO (Video In No Out) system found in SGI Indys.
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License version 2 as published by the Free Software Foundation.
   6  *
   7  * Copyright (C) 2004,2005 Mikael Nousiainen <tmnousia@cc.hut.fi>
   8  *
   9  * Based on the previous version of the driver for 2.4 kernels by:
  10  * Copyright (C) 2003 Ladislav Michl <ladis@linux-mips.org>
  11  */
  12
  13 /*
  14  * TODO:
  15  * - remove "mark pages reserved-hacks" from memory allocation code
  16  *   and implement nopage()
  17  * - check decimation, calculating and reporting image size when
  18  *   using decimation
  19  * - implement read(), user mode buffers and overlay (?)
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/dma-mapping.h>
  26 #include <linux/errno.h>
  27 #include <linux/fs.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/kernel.h>
  30 #include <linux/mm.h>
  31 #include <linux/time.h>
  32 #include <linux/version.h>
  33
  34 #ifdef CONFIG_KMOD
  35 #include <linux/kmod.h>
  36 #endif
  37
  38 #include <linux/i2c.h>
  39 #include <linux/i2c-algo-sgi.h>
  40
  41 #include <linux/videodev.h>
  42 #include <media/v4l2-common.h>
  43 #include <linux/video_decoder.h>
  44 #include <linux/mutex.h>
  45
  46 #include <asm/paccess.h>
  47 #include <asm/io.h>
  48 #include <asm/sgi/ip22.h>
  49 #include <asm/sgi/mc.h>
  50
  51 #include "vino.h"
  52 #include "saa7191.h"
  53 #include "indycam.h"
  54
  55 /* Uncomment the following line to get lots and lots of (mostly useless)
  56  * debug info.
  57  * Note that the debug output also slows down the driver significantly */
  58 // #define VINO_DEBUG
  59 // #define VINO_DEBUG_INT
  60
  61 #define VINO_MODULE_VERSION "0.0.5"
  62 #define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 5)
  63
  64 MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
  65 MODULE_VERSION(VINO_MODULE_VERSION);
  66 MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
  67 MODULE_LICENSE("GPL");
  68
  69 #ifdef VINO_DEBUG
  70 #define dprintk(x...) printk("VINO: " x);
  71 #else
  72 #define dprintk(x...)
  73 #endif
  74
  75 #define VINO_NO_CHANNEL                 0
  76 #define VINO_CHANNEL_A                  1
  77 #define VINO_CHANNEL_B                  2
  78
  79 #define VINO_PAL_WIDTH                  768
  80 #define VINO_PAL_HEIGHT                 576
  81 #define VINO_NTSC_WIDTH                 640
  82 #define VINO_NTSC_HEIGHT                480
  83
  84 #define VINO_MIN_WIDTH                  32
  85 #define VINO_MIN_HEIGHT                 32
  86
  87 #define VINO_CLIPPING_START_ODD_D1      1
  88 #define VINO_CLIPPING_START_ODD_PAL     15
  89 #define VINO_CLIPPING_START_ODD_NTSC    12
  90
  91 #define VINO_CLIPPING_START_EVEN_D1     2
  92 #define VINO_CLIPPING_START_EVEN_PAL    15
  93 #define VINO_CLIPPING_START_EVEN_NTSC   12
  94
  95 #define VINO_INPUT_CHANNEL_COUNT        3
  96
  97 /* the number is the index for vino_inputs */
  98 #define VINO_INPUT_NONE                 -1
  99 #define VINO_INPUT_COMPOSITE            0
 100 #define VINO_INPUT_SVIDEO               1
 101 #define VINO_INPUT_D1                   2
 102
 103 #define VINO_PAGE_RATIO                 (PAGE_SIZE / VINO_PAGE_SIZE)
 104
 105 #define VINO_FIFO_THRESHOLD_DEFAULT     16
 106
 107 #define VINO_FRAMEBUFFER_SIZE           ((VINO_PAL_WIDTH \
 108                                           * VINO_PAL_HEIGHT * 4 \
 109                                           + 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
 110
 111 #define VINO_FRAMEBUFFER_COUNT_MAX      8
 112
 113 #define VINO_FRAMEBUFFER_UNUSED         0
 114 #define VINO_FRAMEBUFFER_IN_USE         1
 115 #define VINO_FRAMEBUFFER_READY          2
 116
 117 #define VINO_QUEUE_ERROR                -1
 118 #define VINO_QUEUE_MAGIC                0x20050125
 119
 120 #define VINO_MEMORY_NONE                0
 121 #define VINO_MEMORY_MMAP                1
 122 #define VINO_MEMORY_USERPTR             2
 123
 124 #define VINO_DUMMY_DESC_COUNT           4
 125 #define VINO_DESC_FETCH_DELAY           5       /* microseconds */
 126
 127 #define VINO_MAX_FRAME_SKIP_COUNT       128
 128
 129 /* the number is the index for vino_data_formats */
 130 #define VINO_DATA_FMT_NONE              -1
 131 #define VINO_DATA_FMT_GREY              0
 132 #define VINO_DATA_FMT_RGB332            1
 133 #define VINO_DATA_FMT_RGB32             2
 134 #define VINO_DATA_FMT_YUV               3
 135
 136 #define VINO_DATA_FMT_COUNT             4
 137
 138 /* the number is the index for vino_data_norms */
 139 #define VINO_DATA_NORM_NONE             -1
 140 #define VINO_DATA_NORM_NTSC             0
 141 #define VINO_DATA_NORM_PAL              1
 142 #define VINO_DATA_NORM_SECAM            2
 143 #define VINO_DATA_NORM_D1               3
 144 /* The following are special entries that can be used to
 145  * autodetect the norm. */
 146 #define VINO_DATA_NORM_AUTO             0xfe
 147 #define VINO_DATA_NORM_AUTO_EXT         0xff
 148
 149 #define VINO_DATA_NORM_COUNT            4
 150
 151 /* Internal data structure definitions */
 152
 153 struct vino_input {
 154         char *name;
 155         v4l2_std_id std;
 156 };
 157
 158 struct vino_clipping {
 159         unsigned int left, right, top, bottom;
 160 };
 161
 162 struct vino_data_format {
 163         /* the description */
 164         char *description;
 165         /* bytes per pixel */
 166         unsigned int bpp;
 167         /* V4L2 fourcc code */
 168         __u32 pixelformat;
 169         /* V4L2 colorspace (duh!) */
 170         enum v4l2_colorspace colorspace;
 171 };
 172
 173 struct vino_data_norm {
 174         char *description;
 175         unsigned int width, height;
 176         struct vino_clipping odd;
 177         struct vino_clipping even;
 178
 179         v4l2_std_id std;
 180         unsigned int fps_min, fps_max;
 181         __u32 framelines;
 182 };
 183
 184 struct vino_descriptor_table {
 185         /* the number of PAGE_SIZE sized pages in the buffer */
 186         unsigned int page_count;
 187         /* virtual (kmalloc'd) pointers to the actual data
 188          * (in PAGE_SIZE chunks, used with mmap streaming) */
 189         unsigned long *virtual;
 190
 191         /* cpu address for the VINO descriptor table
 192          * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
 193         unsigned long *dma_cpu;
 194         /* dma address for the VINO descriptor table
 195          * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
 196         dma_addr_t dma;
 197 };
 198
 199 struct vino_framebuffer {
 200         /* identifier nubmer */
 201         unsigned int id;
 202         /* the length of the whole buffer */
 203         unsigned int size;
 204         /* the length of actual data in buffer */
 205         unsigned int data_size;
 206         /* the data format */
 207         unsigned int data_format;
 208         /* the state of buffer data */
 209         unsigned int state;
 210         /* is the buffer mapped in user space? */
 211         unsigned int map_count;
 212         /* memory offset for mmap() */
 213         unsigned int offset;
 214         /* frame counter */
 215         unsigned int frame_counter;
 216         /* timestamp (written when image capture finishes) */
 217         struct timeval timestamp;
 218
 219         struct vino_descriptor_table desc_table;
 220
 221         spinlock_t state_lock;
 222 };
 223
 224 struct vino_framebuffer_fifo {
 225         unsigned int length;
 226
 227         unsigned int used;
 228         unsigned int head;
 229         unsigned int tail;
 230
 231         unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
 232 };
 233
 234 struct vino_framebuffer_queue {
 235         unsigned int magic;
 236
 237         /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
 238         unsigned int type;
 239         unsigned int length;
 240
 241         /* data field of in and out contain index numbers for buffer */
 242         struct vino_framebuffer_fifo in;
 243         struct vino_framebuffer_fifo out;
 244
 245         struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
 246
 247         spinlock_t queue_lock;
 248         struct mutex queue_mutex;
 249         wait_queue_head_t frame_wait_queue;
 250 };
 251
 252 struct vino_interrupt_data {
 253         struct timeval timestamp;
 254         unsigned int frame_counter;
 255         unsigned int skip_count;
 256         unsigned int skip;
 257 };
 258
 259 struct vino_channel_settings {
 260         unsigned int channel;
 261
 262         int input;
 263         unsigned int data_format;
 264         unsigned int data_norm;
 265         struct vino_clipping clipping;
 266         unsigned int decimation;
 267         unsigned int line_size;
 268         unsigned int alpha;
 269         unsigned int fps;
 270         unsigned int framert_reg;
 271
 272         unsigned int fifo_threshold;
 273
 274         struct vino_framebuffer_queue fb_queue;
 275
 276         /* number of the current field */
 277         unsigned int field;
 278
 279         /* read in progress */
 280         int reading;
 281         /* streaming is active */
 282         int streaming;
 283         /* the driver is currently processing the queue */
 284         int capturing;
 285
 286         struct mutex mutex;
 287         spinlock_t capture_lock;
 288
 289         unsigned int users;
 290
 291         struct vino_interrupt_data int_data;
 292
 293         /* V4L support */
 294         struct video_device *v4l_device;
 295 };
 296
 297 struct vino_client {
 298         /* the channel which owns this client:
 299          * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
 300         unsigned int owner;
 301         struct i2c_client *driver;
 302 };
 303
 304 struct vino_settings {
 305         struct vino_channel_settings a;
 306         struct vino_channel_settings b;
 307
 308         struct vino_client decoder;
 309         struct vino_client camera;
 310
 311         /* a lock for vino register access */
 312         spinlock_t vino_lock;
 313         /* a lock for channel input changes */
 314         spinlock_t input_lock;
 315
 316         unsigned long dummy_page;
 317         struct vino_descriptor_table dummy_desc_table;
 318 };
 319
 320 /* Module parameters */
 321
 322 /*
 323  * Using vino_pixel_conversion the ABGR32-format pixels supplied
 324  * by the VINO chip can be converted to more common formats
 325  * like RGBA32 (or probably RGB24 in the future). This way we
 326  * can give out data that can be specified correctly with
 327  * the V4L2-definitions.
 328  *
 329  * The pixel format is specified as RGBA32 when no conversion
 330  * is used.
 331  *
 332  * Note that this only affects the 32-bit bit depth.
 333  *
 334  * Use non-zero value to enable conversion.
 335  */
 336 static int vino_pixel_conversion = 0;
 337
 338 module_param_named(pixelconv, vino_pixel_conversion, int, 0);
 339
 340 MODULE_PARM_DESC(pixelconv,
 341                  "enable pixel conversion (non-zero value enables)");
 342
 343 /* Internal data structures */
 344
 345 static struct sgi_vino *vino;
 346
 347 static struct vino_settings *vino_drvdata;
 348
 349 static const char *vino_driver_name = "vino";
 350 static const char *vino_driver_description = "SGI VINO";
 351 static const char *vino_bus_name = "GIO64 bus";
 352 static const char *vino_v4l_device_name_a = "SGI VINO Channel A";
 353 static const char *vino_v4l_device_name_b = "SGI VINO Channel B";
 354
 355 static void vino_capture_tasklet(unsigned long channel);
 356
 357 DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
 358 DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
 359
 360 static const struct vino_input vino_inputs[] = {
 361         {
 362                 .name           = "Composite",
 363                 .std            = V4L2_STD_NTSC | V4L2_STD_PAL
 364                 | V4L2_STD_SECAM,
 365         },{
 366                 .name           = "S-Video",
 367                 .std            = V4L2_STD_NTSC | V4L2_STD_PAL
 368                 | V4L2_STD_SECAM,
 369         },{
 370                 .name           = "D1/IndyCam",
 371                 .std            = V4L2_STD_NTSC,
 372         }
 373 };
 374
 375 static const struct vino_data_format vino_data_formats[] = {
 376         {
 377                 .description    = "8-bit greyscale",
 378                 .bpp            = 1,
 379                 .pixelformat    = V4L2_PIX_FMT_GREY,
 380                 .colorspace     = V4L2_COLORSPACE_SMPTE170M,
 381         },{
 382                 .description    = "8-bit dithered RGB 3-3-2",
 383                 .bpp            = 1,
 384                 .pixelformat    = V4L2_PIX_FMT_RGB332,
 385                 .colorspace     = V4L2_COLORSPACE_SRGB,
 386         },{
 387                 .description    = "32-bit RGB",
 388                 .bpp            = 4,
 389                 .pixelformat    = V4L2_PIX_FMT_RGB32,
 390                 .colorspace     = V4L2_COLORSPACE_SRGB,
 391         },{
 392                 .description    = "YUV 4:2:2",
 393                 .bpp            = 2,
 394                 .pixelformat    = V4L2_PIX_FMT_YUYV, // XXX: swapped?
 395                 .colorspace     = V4L2_COLORSPACE_SMPTE170M,
 396         }
 397 };
 398
 399 static const struct vino_data_norm vino_data_norms[] = {
 400         {
 401                 .description    = "NTSC",
 402                 .std            = V4L2_STD_NTSC,
 403                 .fps_min        = 6,
 404                 .fps_max        = 30,
 405                 .framelines     = 525,
 406                 .width          = VINO_NTSC_WIDTH,
 407                 .height         = VINO_NTSC_HEIGHT,
 408                 .odd            = {
 409                         .top    = VINO_CLIPPING_START_ODD_NTSC,
 410                         .left   = 0,
 411                         .bottom = VINO_CLIPPING_START_ODD_NTSC
 412                         + VINO_NTSC_HEIGHT / 2 - 1,
 413                         .right  = VINO_NTSC_WIDTH,
 414                 },
 415                 .even           = {
 416                         .top    = VINO_CLIPPING_START_EVEN_NTSC,
 417                         .left   = 0,
 418                         .bottom = VINO_CLIPPING_START_EVEN_NTSC
 419                         + VINO_NTSC_HEIGHT / 2 - 1,
 420                         .right  = VINO_NTSC_WIDTH,
 421                 },
 422         },{
 423                 .description    = "PAL",
 424                 .std            = V4L2_STD_PAL,
 425                 .fps_min        = 5,
 426                 .fps_max        = 25,
 427                 .framelines     = 625,
 428                 .width          = VINO_PAL_WIDTH,
 429                 .height         = VINO_PAL_HEIGHT,
 430                 .odd            = {
 431                         .top    = VINO_CLIPPING_START_ODD_PAL,
 432                         .left   = 0,
 433                         .bottom = VINO_CLIPPING_START_ODD_PAL
 434                         + VINO_PAL_HEIGHT / 2 - 1,
 435                         .right  = VINO_PAL_WIDTH,
 436                 },
 437                 .even           = {
 438                         .top    = VINO_CLIPPING_START_EVEN_PAL,
 439                         .left   = 0,
 440                         .bottom = VINO_CLIPPING_START_EVEN_PAL
 441                         + VINO_PAL_HEIGHT / 2 - 1,
 442                         .right  = VINO_PAL_WIDTH,
 443                 },
 444         },{
 445                 .description    = "SECAM",
 446                 .std            = V4L2_STD_SECAM,
 447                 .fps_min        = 5,
 448                 .fps_max        = 25,
 449                 .framelines     = 625,
 450                 .width          = VINO_PAL_WIDTH,
 451                 .height         = VINO_PAL_HEIGHT,
 452                 .odd            = {
 453                         .top    = VINO_CLIPPING_START_ODD_PAL,
 454                         .left   = 0,
 455                         .bottom = VINO_CLIPPING_START_ODD_PAL
 456                         + VINO_PAL_HEIGHT / 2 - 1,
 457                         .right  = VINO_PAL_WIDTH,
 458                 },
 459                 .even           = {
 460                         .top    = VINO_CLIPPING_START_EVEN_PAL,
 461                         .left   = 0,
 462                         .bottom = VINO_CLIPPING_START_EVEN_PAL
 463                         + VINO_PAL_HEIGHT / 2 - 1,
 464                         .right  = VINO_PAL_WIDTH,
 465                 },
 466         },{
 467                 .description    = "NTSC/D1",
 468                 .std            = V4L2_STD_NTSC,
 469                 .fps_min        = 6,
 470                 .fps_max        = 30,
 471                 .framelines     = 525,
 472                 .width          = VINO_NTSC_WIDTH,
 473                 .height         = VINO_NTSC_HEIGHT,
 474                 .odd            = {
 475                         .top    = VINO_CLIPPING_START_ODD_D1,
 476                         .left   = 0,
 477                         .bottom = VINO_CLIPPING_START_ODD_D1
 478                         + VINO_NTSC_HEIGHT / 2 - 1,
 479                         .right  = VINO_NTSC_WIDTH,
 480                 },
 481                 .even           = {
 482                         .top    = VINO_CLIPPING_START_EVEN_D1,
 483                         .left   = 0,
 484                         .bottom = VINO_CLIPPING_START_EVEN_D1
 485                         + VINO_NTSC_HEIGHT / 2 - 1,
 486                         .right  = VINO_NTSC_WIDTH,
 487                 },
 488         }
 489 };
 490
 491 #define VINO_INDYCAM_V4L2_CONTROL_COUNT         9
 492
 493 struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
 494         {
 495                 .id = V4L2_CID_AUTOGAIN,
 496                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 497                 .name = "Automatic Gain Control",
 498                 .minimum = 0,
 499                 .maximum = 1,
 500                 .step = 1,
 501                 .default_value = INDYCAM_AGC_DEFAULT,
 502                 .flags = 0,
 503                 .reserved = { INDYCAM_CONTROL_AGC, 0 },
 504         },{
 505                 .id = V4L2_CID_AUTO_WHITE_BALANCE,
 506                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 507                 .name = "Automatic White Balance",
 508                 .minimum = 0,
 509                 .maximum = 1,
 510                 .step = 1,
 511                 .default_value = INDYCAM_AWB_DEFAULT,
 512                 .flags = 0,
 513                 .reserved = { INDYCAM_CONTROL_AWB, 0 },
 514         },{
 515                 .id = V4L2_CID_GAIN,
 516                 .type = V4L2_CTRL_TYPE_INTEGER,
 517                 .name = "Gain",
 518                 .minimum = INDYCAM_GAIN_MIN,
 519                 .maximum = INDYCAM_GAIN_MAX,
 520                 .step = 1,
 521                 .default_value = INDYCAM_GAIN_DEFAULT,
 522                 .flags = 0,
 523                 .reserved = { INDYCAM_CONTROL_GAIN, 0 },
 524         },{
 525                 .id = V4L2_CID_PRIVATE_BASE,
 526                 .type = V4L2_CTRL_TYPE_INTEGER,
 527                 .name = "Red Saturation",
 528                 .minimum = INDYCAM_RED_SATURATION_MIN,
 529                 .maximum = INDYCAM_RED_SATURATION_MAX,
 530                 .step = 1,
 531                 .default_value = INDYCAM_RED_SATURATION_DEFAULT,
 532                 .flags = 0,
 533                 .reserved = { INDYCAM_CONTROL_RED_SATURATION, 0 },
 534         },{
 535                 .id = V4L2_CID_PRIVATE_BASE + 1,
 536                 .type = V4L2_CTRL_TYPE_INTEGER,
 537                 .name = "Blue Saturation",
 538                 .minimum = INDYCAM_BLUE_SATURATION_MIN,
 539                 .maximum = INDYCAM_BLUE_SATURATION_MAX,
 540                 .step = 1,
 541                 .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
 542                 .flags = 0,
 543                 .reserved = { INDYCAM_CONTROL_BLUE_SATURATION, 0 },
 544         },{
 545                 .id = V4L2_CID_RED_BALANCE,
 546                 .type = V4L2_CTRL_TYPE_INTEGER,
 547                 .name = "Red Balance",
 548                 .minimum = INDYCAM_RED_BALANCE_MIN,
 549                 .maximum = INDYCAM_RED_BALANCE_MAX,
 550                 .step = 1,
 551                 .default_value = INDYCAM_RED_BALANCE_DEFAULT,
 552                 .flags = 0,
 553                 .reserved = { INDYCAM_CONTROL_RED_BALANCE, 0 },
 554         },{
 555                 .id = V4L2_CID_BLUE_BALANCE,
 556                 .type = V4L2_CTRL_TYPE_INTEGER,
 557                 .name = "Blue Balance",
 558                 .minimum = INDYCAM_BLUE_BALANCE_MIN,
 559                 .maximum = INDYCAM_BLUE_BALANCE_MAX,
 560                 .step = 1,
 561                 .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
 562                 .flags = 0,
 563                 .reserved = { INDYCAM_CONTROL_BLUE_BALANCE, 0 },
 564         },{
 565                 .id = V4L2_CID_EXPOSURE,
 566                 .type = V4L2_CTRL_TYPE_INTEGER,
 567                 .name = "Shutter Control",
 568                 .minimum = INDYCAM_SHUTTER_MIN,
 569                 .maximum = INDYCAM_SHUTTER_MAX,
 570                 .step = 1,
 571                 .default_value = INDYCAM_SHUTTER_DEFAULT,
 572                 .flags = 0,
 573                 .reserved = { INDYCAM_CONTROL_SHUTTER, 0 },
 574         },{
 575                 .id = V4L2_CID_GAMMA,
 576                 .type = V4L2_CTRL_TYPE_INTEGER,
 577                 .name = "Gamma",
 578                 .minimum = INDYCAM_GAMMA_MIN,
 579                 .maximum = INDYCAM_GAMMA_MAX,
 580                 .step = 1,
 581                 .default_value = INDYCAM_GAMMA_DEFAULT,
 582                 .flags = 0,
 583                 .reserved = { INDYCAM_CONTROL_GAMMA, 0 },
 584         }
 585 };
 586
 587 #define VINO_SAA7191_V4L2_CONTROL_COUNT         9
 588
 589 struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
 590         {
 591                 .id = V4L2_CID_HUE,
 592                 .type = V4L2_CTRL_TYPE_INTEGER,
 593                 .name = "Hue",
 594                 .minimum = SAA7191_HUE_MIN,
 595                 .maximum = SAA7191_HUE_MAX,
 596                 .step = 1,
 597                 .default_value = SAA7191_HUE_DEFAULT,
 598                 .flags = 0,
 599                 .reserved = { SAA7191_CONTROL_HUE, 0 },
 600         },{
 601                 .id = V4L2_CID_PRIVATE_BASE,
 602                 .type = V4L2_CTRL_TYPE_INTEGER,
 603                 .name = "Luminance Bandpass",
 604                 .minimum = SAA7191_BANDPASS_MIN,
 605                 .maximum = SAA7191_BANDPASS_MAX,
 606                 .step = 1,
 607                 .default_value = SAA7191_BANDPASS_DEFAULT,
 608                 .flags = 0,
 609                 .reserved = { SAA7191_CONTROL_BANDPASS, 0 },
 610         },{
 611                 .id = V4L2_CID_PRIVATE_BASE + 1,
 612                 .type = V4L2_CTRL_TYPE_INTEGER,
 613                 .name = "Luminance Bandpass Weight",
 614                 .minimum = SAA7191_BANDPASS_WEIGHT_MIN,
 615                 .maximum = SAA7191_BANDPASS_WEIGHT_MAX,
 616                 .step = 1,
 617                 .default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
 618                 .flags = 0,
 619                 .reserved = { SAA7191_CONTROL_BANDPASS_WEIGHT, 0 },
 620         },{
 621                 .id = V4L2_CID_PRIVATE_BASE + 2,
 622                 .type = V4L2_CTRL_TYPE_INTEGER,
 623                 .name = "HF Luminance Coring",
 624                 .minimum = SAA7191_CORING_MIN,
 625                 .maximum = SAA7191_CORING_MAX,
 626                 .step = 1,
 627                 .default_value = SAA7191_CORING_DEFAULT,
 628                 .flags = 0,
 629                 .reserved = { SAA7191_CONTROL_CORING, 0 },
 630         },{
 631                 .id = V4L2_CID_PRIVATE_BASE + 3,
 632                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 633                 .name = "Force Colour",
 634                 .minimum = SAA7191_FORCE_COLOUR_MIN,
 635                 .maximum = SAA7191_FORCE_COLOUR_MAX,
 636                 .step = 1,
 637                 .default_value = SAA7191_FORCE_COLOUR_DEFAULT,
 638                 .flags = 0,
 639                 .reserved = { SAA7191_CONTROL_FORCE_COLOUR, 0 },
 640         },{
 641                 .id = V4L2_CID_PRIVATE_BASE + 4,
 642                 .type = V4L2_CTRL_TYPE_INTEGER,
 643                 .name = "Chrominance Gain Control",
 644                 .minimum = SAA7191_CHROMA_GAIN_MIN,
 645                 .maximum = SAA7191_CHROMA_GAIN_MAX,
 646                 .step = 1,
 647                 .default_value = SAA7191_CHROMA_GAIN_DEFAULT,
 648                 .flags = 0,
 649                 .reserved = { SAA7191_CONTROL_CHROMA_GAIN, 0 },
 650         },{
 651                 .id = V4L2_CID_PRIVATE_BASE + 5,
 652                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 653                 .name = "VTR Time Constant",
 654                 .minimum = SAA7191_VTRC_MIN,
 655                 .maximum = SAA7191_VTRC_MAX,
 656                 .step = 1,
 657                 .default_value = SAA7191_VTRC_DEFAULT,
 658                 .flags = 0,
 659                 .reserved = { SAA7191_CONTROL_VTRC, 0 },
 660         },{
 661                 .id = V4L2_CID_PRIVATE_BASE + 6,
 662                 .type = V4L2_CTRL_TYPE_INTEGER,
 663                 .name = "Luminance Delay Compensation",
 664                 .minimum = SAA7191_LUMA_DELAY_MIN,
 665                 .maximum = SAA7191_LUMA_DELAY_MAX,
 666                 .step = 1,
 667                 .default_value = SAA7191_LUMA_DELAY_DEFAULT,
 668                 .flags = 0,
 669                 .reserved = { SAA7191_CONTROL_LUMA_DELAY, 0 },
 670         },{
 671                 .id = V4L2_CID_PRIVATE_BASE + 7,
 672                 .type = V4L2_CTRL_TYPE_INTEGER,
 673                 .name = "Vertical Noise Reduction",
 674                 .minimum = SAA7191_VNR_MIN,
 675                 .maximum = SAA7191_VNR_MAX,
 676                 .step = 1,
 677                 .default_value = SAA7191_VNR_DEFAULT,
 678                 .flags = 0,
 679                 .reserved = { SAA7191_CONTROL_VNR, 0 },
 680         }
 681 };
 682
 683 /* VINO I2C bus functions */
 684
 685 unsigned i2c_vino_getctrl(void *data)
 686 {
 687         return vino->i2c_control;
 688 }
 689
 690 void i2c_vino_setctrl(void *data, unsigned val)
 691 {
 692         vino->i2c_control = val;
 693 }
 694
 695 unsigned i2c_vino_rdata(void *data)
 696 {
 697         return vino->i2c_data;
 698 }
 699
 700 void i2c_vino_wdata(void *data, unsigned val)
 701 {
 702         vino->i2c_data = val;
 703 }
 704
 705 static struct i2c_algo_sgi_data i2c_sgi_vino_data =
 706 {
 707         .getctrl = &i2c_vino_getctrl,
 708         .setctrl = &i2c_vino_setctrl,
 709         .rdata   = &i2c_vino_rdata,
 710         .wdata   = &i2c_vino_wdata,
 711         .xfer_timeout = 200,
 712         .ack_timeout  = 1000,
 713 };
 714
 715 /*
 716  * There are two possible clients on VINO I2C bus, so we limit usage only
 717  * to them.
 718  */
 719 static int i2c_vino_client_reg(struct i2c_client *client)
 720 {
 721         unsigned long flags;
 722         int ret = 0;
 723
 724         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
 725         switch (client->driver->id) {
 726         case I2C_DRIVERID_SAA7191:
 727                 if (vino_drvdata->decoder.driver)
 728                         ret = -EBUSY;
 729                 else
 730                         vino_drvdata->decoder.driver = client;
 731                 break;
 732         case I2C_DRIVERID_INDYCAM:
 733                 if (vino_drvdata->camera.driver)
 734                         ret = -EBUSY;
 735                 else
 736                         vino_drvdata->camera.driver = client;
 737                 break;
 738         default:
 739                 ret = -ENODEV;
 740         }
 741         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
 742
 743         return ret;
 744 }
 745
 746 static int i2c_vino_client_unreg(struct i2c_client *client)
 747 {
 748         unsigned long flags;
 749         int ret = 0;
 750
 751         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
 752         if (client == vino_drvdata->decoder.driver) {
 753                 if (vino_drvdata->decoder.owner != VINO_NO_CHANNEL)
 754                         ret = -EBUSY;
 755                 else
 756                         vino_drvdata->decoder.driver = NULL;
 757         } else if (client == vino_drvdata->camera.driver) {
 758                 if (vino_drvdata->camera.owner != VINO_NO_CHANNEL)
 759                         ret = -EBUSY;
 760                 else
 761                         vino_drvdata->camera.driver = NULL;
 762         }
 763         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
 764
 765         return ret;
 766 }
 767
 768 static struct i2c_adapter vino_i2c_adapter =
 769 {
 770         .name                   = "VINO I2C bus",
 771         .id                     = I2C_HW_SGI_VINO,
 772         .algo_data              = &i2c_sgi_vino_data,
 773         .client_register        = &i2c_vino_client_reg,
 774         .client_unregister      = &i2c_vino_client_unreg,
 775 };
 776
 777 static int vino_i2c_add_bus(void)
 778 {
 779         return i2c_sgi_add_bus(&vino_i2c_adapter);
 780 }
 781
 782 static int vino_i2c_del_bus(void)
 783 {
 784         return i2c_del_adapter(&vino_i2c_adapter);
 785 }
 786
 787 static int i2c_camera_command(unsigned int cmd, void *arg)
 788 {
 789         return vino_drvdata->camera.driver->
 790                 driver->command(vino_drvdata->camera.driver,
 791                                 cmd, arg);
 792 }
 793
 794 static int i2c_decoder_command(unsigned int cmd, void *arg)
 795 {
 796         return vino_drvdata->decoder.driver->
 797                 driver->command(vino_drvdata->decoder.driver,
 798                                 cmd, arg);
 799 }
 800
 801 /* VINO framebuffer/DMA descriptor management */
 802
 803 static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
 804                                                unsigned int count)
 805 {
 806         unsigned int i;
 807
 808         dprintk("vino_free_buffer_with_count(): count = %d\n", count);
 809
 810         for (i = 0; i < count; i++) {
 811                 ClearPageReserved(virt_to_page(fb->desc_table.virtual[i]));
 812                 dma_unmap_single(NULL,
 813                                  fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
 814                                  PAGE_SIZE, DMA_FROM_DEVICE);
 815                 free_page(fb->desc_table.virtual[i]);
 816         }
 817
 818         dma_free_coherent(NULL,
 819                           VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
 820                           sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
 821                           fb->desc_table.dma);
 822         kfree(fb->desc_table.virtual);
 823
 824         memset(fb, 0, sizeof(struct vino_framebuffer));
 825 }
 826
 827 static void vino_free_buffer(struct vino_framebuffer *fb)
 828 {
 829         vino_free_buffer_with_count(fb, fb->desc_table.page_count);
 830 }
 831
 832 static int vino_allocate_buffer(struct vino_framebuffer *fb,
 833                                 unsigned int size)
 834 {
 835         unsigned int count, i, j;
 836         int ret = 0;
 837
 838         dprintk("vino_allocate_buffer():\n");
 839
 840         if (size < 1)
 841                 return -EINVAL;
 842
 843         memset(fb, 0, sizeof(struct vino_framebuffer));
 844
 845         count = ((size / PAGE_SIZE) + 4) & ~3;
 846
 847         dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
 848                 size, count);
 849
 850         /* allocate memory for table with virtual (page) addresses */
 851         fb->desc_table.virtual = (unsigned long *)
 852                 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
 853         if (!fb->desc_table.virtual)
 854                 return -ENOMEM;
 855
 856         /* allocate memory for table with dma addresses
 857          * (has space for four extra descriptors) */
 858         fb->desc_table.dma_cpu =
 859                 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
 860                                    sizeof(dma_addr_t), &fb->desc_table.dma,
 861                                    GFP_KERNEL | GFP_DMA);
 862         if (!fb->desc_table.dma_cpu) {
 863                 ret = -ENOMEM;
 864                 goto out_free_virtual;
 865         }
 866
 867         /* allocate pages for the buffer and acquire the according
 868          * dma addresses */
 869         for (i = 0; i < count; i++) {
 870                 dma_addr_t dma_data_addr;
 871
 872                 fb->desc_table.virtual[i] =
 873                         get_zeroed_page(GFP_KERNEL | GFP_DMA);
 874                 if (!fb->desc_table.virtual[i]) {
 875                         ret = -ENOBUFS;
 876                         break;
 877                 }
 878
 879                 dma_data_addr =
 880                         dma_map_single(NULL,
 881                                        (void *)fb->desc_table.virtual[i],
 882                                        PAGE_SIZE, DMA_FROM_DEVICE);
 883
 884                 for (j = 0; j < VINO_PAGE_RATIO; j++) {
 885                         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
 886                                 dma_data_addr + VINO_PAGE_SIZE * j;
 887                 }
 888
 889                 SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
 890         }
 891
 892         /* page_count needs to be set anyway, because the descriptor table has
 893          * been allocated according to this number */
 894         fb->desc_table.page_count = count;
 895
 896         if (ret) {
 897                 /* the descriptor with index i doesn't contain
 898                  * a valid address yet */
 899                 vino_free_buffer_with_count(fb, i);
 900                 return ret;
 901         }
 902
 903         //fb->size = size;
 904         fb->size = count * PAGE_SIZE;
 905         fb->data_format = VINO_DATA_FMT_NONE;
 906
 907         /* set the dma stop-bit for the last (count+1)th descriptor */
 908         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
 909         return 0;
 910
 911  out_free_virtual:
 912         kfree(fb->desc_table.virtual);
 913         return ret;
 914 }
 915
 916 #if 0
 917 /* user buffers not fully implemented yet */
 918 static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
 919                                      void *user,
 920                                      unsigned int size)
 921 {
 922         unsigned int count, i, j;
 923         int ret = 0;
 924
 925         dprintk("vino_prepare_user_buffer():\n");
 926
 927         if (size < 1)
 928                 return -EINVAL;
 929
 930         memset(fb, 0, sizeof(struct vino_framebuffer));
 931
 932         count = ((size / PAGE_SIZE)) & ~3;
 933
 934         dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
 935                 size, count);
 936
 937         /* allocate memory for table with virtual (page) addresses */
 938         fb->desc_table.virtual = (unsigned long *)
 939                 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
 940         if (!fb->desc_table.virtual)
 941                 return -ENOMEM;
 942
 943         /* allocate memory for table with dma addresses
 944          * (has space for four extra descriptors) */
 945         fb->desc_table.dma_cpu =
 946                 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
 947                                    sizeof(dma_addr_t), &fb->desc_table.dma,
 948                                    GFP_KERNEL | GFP_DMA);
 949         if (!fb->desc_table.dma_cpu) {
 950                 ret = -ENOMEM;
 951                 goto out_free_virtual;
 952         }
 953
 954         /* allocate pages for the buffer and acquire the according
 955          * dma addresses */
 956         for (i = 0; i < count; i++) {
 957                 dma_addr_t dma_data_addr;
 958
 959                 fb->desc_table.virtual[i] =
 960                         get_zeroed_page(GFP_KERNEL | GFP_DMA);
 961                 if (!fb->desc_table.virtual[i]) {
 962                         ret = -ENOBUFS;
 963                         break;
 964                 }
 965
 966                 dma_data_addr =
 967                         dma_map_single(NULL,
 968                                        (void *)fb->desc_table.virtual[i],
 969                                        PAGE_SIZE, DMA_FROM_DEVICE);
 970
 971                 for (j = 0; j < VINO_PAGE_RATIO; j++) {
 972                         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
 973                                 dma_data_addr + VINO_PAGE_SIZE * j;
 974                 }
 975
 976                 SetPageReserved(virt_to_page(fb->desc_table.virtual[i]));
 977         }
 978
 979         /* page_count needs to be set anyway, because the descriptor table has
 980          * been allocated according to this number */
 981         fb->desc_table.page_count = count;
 982
 983         if (ret) {
 984                 /* the descriptor with index i doesn't contain
 985                  * a valid address yet */
 986                 vino_free_buffer_with_count(fb, i);
 987                 return ret;
 988         }
 989
 990         //fb->size = size;
 991         fb->size = count * PAGE_SIZE;
 992
 993         /* set the dma stop-bit for the last (count+1)th descriptor */
 994         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
 995         return 0;
 996
 997  out_free_virtual:
 998         kfree(fb->desc_table.virtual);
 999         return ret;
1000 }
1001 #endif
1002
1003 static void vino_sync_buffer(struct vino_framebuffer *fb)
1004 {
1005         int i;
1006
1007         dprintk("vino_sync_buffer():\n");
1008
1009         for (i = 0; i < fb->desc_table.page_count; i++)
1010                 dma_sync_single(NULL,
1011                                 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
1012                                 PAGE_SIZE, DMA_FROM_DEVICE);
1013 }
1014
1015 /* Framebuffer fifo functions (need to be locked externally) */
1016
1017 static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
1018                            unsigned int length)
1019 {
1020         f->length = 0;
1021         f->used = 0;
1022         f->head = 0;
1023         f->tail = 0;
1024
1025         if (length > VINO_FRAMEBUFFER_COUNT_MAX)
1026                 length = VINO_FRAMEBUFFER_COUNT_MAX;
1027
1028         f->length = length;
1029 }
1030
1031 /* returns true/false */
1032 static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
1033                                    unsigned int id)
1034 {
1035         unsigned int i;
1036
1037         for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
1038                 if (f->data[i] == id)
1039                         return 1;
1040         }
1041
1042         return 0;
1043 }
1044
1045 #if 0
1046 /* returns true/false */
1047 static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
1048 {
1049         return (f->used == f->length);
1050 }
1051 #endif
1052
1053 static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
1054 {
1055         return f->used;
1056 }
1057
1058 static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
1059 {
1060         if (id >= f->length) {
1061                 return VINO_QUEUE_ERROR;
1062         }
1063
1064         if (vino_fifo_has_id(f, id)) {
1065                 return VINO_QUEUE_ERROR;
1066         }
1067
1068         if (f->used < f->length) {
1069                 f->data[f->tail] = id;
1070                 f->tail = (f->tail + 1) % f->length;
1071                 f->used++;
1072         } else {
1073                 return VINO_QUEUE_ERROR;
1074         }
1075
1076         return 0;
1077 }
1078
1079 static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
1080 {
1081         if (f->used > 0) {
1082                 *id = f->data[f->head];
1083         } else {
1084                 return VINO_QUEUE_ERROR;
1085         }
1086
1087         return 0;
1088 }
1089
1090 static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
1091 {
1092         if (f->used > 0) {
1093                 *id = f->data[f->head];
1094                 f->head = (f->head + 1) % f->length;
1095                 f->used--;
1096         } else {
1097                 return VINO_QUEUE_ERROR;
1098         }
1099
1100         return 0;
1101 }
1102
1103 /* Framebuffer queue functions */
1104
1105 /* execute with queue_lock locked */
1106 static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
1107                                        unsigned int length)
1108 {
1109         unsigned int i;
1110
1111         q->length = 0;
1112         memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
1113         memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
1114         for (i = 0; i < length; i++) {
1115                 dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
1116                         i);
1117                 vino_free_buffer(q->buffer[i]);
1118                 kfree(q->buffer[i]);
1119         }
1120
1121         q->type = VINO_MEMORY_NONE;
1122         q->magic = 0;
1123 }
1124
1125 static void vino_queue_free(struct vino_framebuffer_queue *q)
1126 {
1127         dprintk("vino_queue_free():\n");
1128
1129         if (q->magic != VINO_QUEUE_MAGIC)
1130                 return;
1131         if (q->type != VINO_MEMORY_MMAP)
1132                 return;
1133
1134         mutex_lock(&q->queue_mutex);
1135
1136         vino_queue_free_with_count(q, q->length);
1137
1138         mutex_unlock(&q->queue_mutex);
1139 }
1140
1141 static int vino_queue_init(struct vino_framebuffer_queue *q,
1142                            unsigned int *length)
1143 {
1144         unsigned int i;
1145         int ret = 0;
1146
1147         dprintk("vino_queue_init(): length = %d\n", *length);
1148
1149         if (q->magic == VINO_QUEUE_MAGIC) {
1150                 dprintk("vino_queue_init(): queue already initialized!\n");
1151                 return -EINVAL;
1152         }
1153
1154         if (q->type != VINO_MEMORY_NONE) {
1155                 dprintk("vino_queue_init(): queue already initialized!\n");
1156                 return -EINVAL;
1157         }
1158
1159         if (*length < 1)
1160                 return -EINVAL;
1161
1162         mutex_lock(&q->queue_mutex);
1163
1164         if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
1165                 *length = VINO_FRAMEBUFFER_COUNT_MAX;
1166
1167         q->length = 0;
1168
1169         for (i = 0; i < *length; i++) {
1170                 dprintk("vino_queue_init(): allocating buffer %d\n", i);
1171                 q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
1172                                        GFP_KERNEL);
1173                 if (!q->buffer[i]) {
1174                         dprintk("vino_queue_init(): kmalloc() failed\n");
1175                         ret = -ENOMEM;
1176                         break;
1177                 }
1178
1179                 ret = vino_allocate_buffer(q->buffer[i],
1180                                            VINO_FRAMEBUFFER_SIZE);
1181                 if (ret) {
1182                         kfree(q->buffer[i]);
1183                         dprintk("vino_queue_init(): "
1184                                 "vino_allocate_buffer() failed\n");
1185                         break;
1186                 }
1187
1188                 q->buffer[i]->id = i;
1189                 if (i > 0) {
1190                         q->buffer[i]->offset = q->buffer[i - 1]->offset +
1191                                 q->buffer[i - 1]->size;
1192                 } else {
1193                         q->buffer[i]->offset = 0;
1194                 }
1195
1196                 spin_lock_init(&q->buffer[i]->state_lock);
1197
1198                 dprintk("vino_queue_init(): buffer = %d, offset = %d, "
1199                         "size = %d\n", i, q->buffer[i]->offset,
1200                         q->buffer[i]->size);
1201         }
1202
1203         if (ret) {
1204                 vino_queue_free_with_count(q, i);
1205                 *length = 0;
1206         } else {
1207                 q->length = *length;
1208                 vino_fifo_init(&q->in, q->length);
1209                 vino_fifo_init(&q->out, q->length);
1210                 q->type = VINO_MEMORY_MMAP;
1211                 q->magic = VINO_QUEUE_MAGIC;
1212         }
1213
1214         mutex_unlock(&q->queue_mutex);
1215
1216         return ret;
1217 }
1218
1219 static struct vino_framebuffer *vino_queue_add(struct
1220                                                vino_framebuffer_queue *q,
1221                                                unsigned int id)
1222 {
1223         struct vino_framebuffer *ret = NULL;
1224         unsigned int total;
1225         unsigned long flags;
1226
1227         dprintk("vino_queue_add(): id = %d\n", id);
1228
1229         if (q->magic != VINO_QUEUE_MAGIC) {
1230                 return ret;
1231         }
1232
1233         spin_lock_irqsave(&q->queue_lock, flags);
1234
1235         if (q->length == 0)
1236                 goto out;
1237
1238         if (id >= q->length)
1239                 goto out;
1240
1241         /* not needed?: if (vino_fifo_full(&q->out)) {
1242                 goto out;
1243                 }*/
1244         /* check that outgoing queue isn't already full
1245          * (or that it won't become full) */
1246         total = vino_fifo_get_used(&q->in) +
1247                 vino_fifo_get_used(&q->out);
1248         if (total >= q->length)
1249                 goto out;
1250
1251         if (vino_fifo_enqueue(&q->in, id))
1252                 goto out;
1253
1254         ret = q->buffer[id];
1255
1256 out:
1257         spin_unlock_irqrestore(&q->queue_lock, flags);
1258
1259         return ret;
1260 }
1261
1262 static struct vino_framebuffer *vino_queue_transfer(struct
1263                                                     vino_framebuffer_queue *q)
1264 {
1265         struct vino_framebuffer *ret = NULL;
1266         struct vino_framebuffer *fb;
1267         int id;
1268         unsigned long flags;
1269
1270         dprintk("vino_queue_transfer():\n");
1271
1272         if (q->magic != VINO_QUEUE_MAGIC) {
1273                 return ret;
1274         }
1275
1276         spin_lock_irqsave(&q->queue_lock, flags);
1277
1278         if (q->length == 0)
1279                 goto out;
1280
1281         // now this actually removes an entry from the incoming queue
1282         if (vino_fifo_dequeue(&q->in, &id)) {
1283                 goto out;
1284         }
1285
1286         dprintk("vino_queue_transfer(): id = %d\n", id);
1287         fb = q->buffer[id];
1288
1289         // we have already checked that the outgoing queue is not full, but...
1290         if (vino_fifo_enqueue(&q->out, id)) {
1291                 printk(KERN_ERR "vino_queue_transfer(): "
1292                        "outgoing queue is full, this shouldn't happen!\n");
1293                 goto out;
1294         }
1295
1296         ret = fb;
1297 out:
1298         spin_unlock_irqrestore(&q->queue_lock, flags);
1299
1300         return ret;
1301 }
1302
1303 /* returns true/false */
1304 static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
1305                                         unsigned int id)
1306 {
1307         int ret = 0;
1308         unsigned long flags;
1309
1310         if (q->magic != VINO_QUEUE_MAGIC) {
1311                 return ret;
1312         }
1313
1314         spin_lock_irqsave(&q->queue_lock, flags);
1315
1316         if (q->length == 0)
1317                 goto out;
1318
1319         ret = vino_fifo_has_id(&q->in, id);
1320
1321 out:
1322         spin_unlock_irqrestore(&q->queue_lock, flags);
1323
1324         return ret;
1325 }
1326
1327 /* returns true/false */
1328 static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
1329                                         unsigned int id)
1330 {
1331         int ret = 0;
1332         unsigned long flags;
1333
1334         if (q->magic != VINO_QUEUE_MAGIC) {
1335                 return ret;
1336         }
1337
1338         spin_lock_irqsave(&q->queue_lock, flags);
1339
1340         if (q->length == 0)
1341                 goto out;
1342
1343         ret = vino_fifo_has_id(&q->out, id);
1344
1345 out:
1346         spin_unlock_irqrestore(&q->queue_lock, flags);
1347
1348         return ret;
1349 }
1350
1351 static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
1352                                    unsigned int *used)
1353 {
1354         int ret = 0;
1355         unsigned long flags;
1356
1357         if (q->magic != VINO_QUEUE_MAGIC) {
1358                 return VINO_QUEUE_ERROR;
1359         }
1360
1361         spin_lock_irqsave(&q->queue_lock, flags);
1362
1363         if (q->length == 0) {
1364                 ret = VINO_QUEUE_ERROR;
1365                 goto out;
1366         }
1367
1368         *used = vino_fifo_get_used(&q->in);
1369
1370 out:
1371         spin_unlock_irqrestore(&q->queue_lock, flags);
1372
1373         return ret;
1374 }
1375
1376 static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
1377                                    unsigned int *used)
1378 {
1379         int ret = 0;
1380         unsigned long flags;
1381
1382         if (q->magic != VINO_QUEUE_MAGIC) {
1383                 return VINO_QUEUE_ERROR;
1384         }
1385
1386         spin_lock_irqsave(&q->queue_lock, flags);
1387
1388         if (q->length == 0) {
1389                 ret = VINO_QUEUE_ERROR;
1390                 goto out;
1391         }
1392
1393         *used = vino_fifo_get_used(&q->out);
1394
1395 out:
1396         spin_unlock_irqrestore(&q->queue_lock, flags);
1397
1398         return ret;
1399 }
1400
1401 #if 0
1402 static int vino_queue_get_total(struct vino_framebuffer_queue *q,
1403                                 unsigned int *total)
1404 {
1405         int ret = 0;
1406         unsigned long flags;
1407
1408         if (q->magic != VINO_QUEUE_MAGIC) {
1409                 return VINO_QUEUE_ERROR;
1410         }
1411
1412         spin_lock_irqsave(&q->queue_lock, flags);
1413
1414         if (q->length == 0) {
1415                 ret = VINO_QUEUE_ERROR;
1416                 goto out;
1417         }
1418
1419         *total = vino_fifo_get_used(&q->in) +
1420                 vino_fifo_get_used(&q->out);
1421
1422 out:
1423         spin_unlock_irqrestore(&q->queue_lock, flags);
1424
1425         return ret;
1426 }
1427 #endif
1428
1429 static struct vino_framebuffer *vino_queue_peek(struct
1430                                                 vino_framebuffer_queue *q,
1431                                                 unsigned int *id)
1432 {
1433         struct vino_framebuffer *ret = NULL;
1434         unsigned long flags;
1435
1436         if (q->magic != VINO_QUEUE_MAGIC) {
1437                 return ret;
1438         }
1439
1440         spin_lock_irqsave(&q->queue_lock, flags);
1441
1442         if (q->length == 0)
1443                 goto out;
1444
1445         if (vino_fifo_peek(&q->in, id)) {
1446                 goto out;
1447         }
1448
1449         ret = q->buffer[*id];
1450 out:
1451         spin_unlock_irqrestore(&q->queue_lock, flags);
1452
1453         return ret;
1454 }
1455
1456 static struct vino_framebuffer *vino_queue_remove(struct
1457                                                   vino_framebuffer_queue *q,
1458                                                   unsigned int *id)
1459 {
1460         struct vino_framebuffer *ret = NULL;
1461         unsigned long flags;
1462         dprintk("vino_queue_remove():\n");
1463
1464         if (q->magic != VINO_QUEUE_MAGIC) {
1465                 return ret;
1466         }
1467
1468         spin_lock_irqsave(&q->queue_lock, flags);
1469
1470         if (q->length == 0)
1471                 goto out;
1472
1473         if (vino_fifo_dequeue(&q->out, id)) {
1474                 goto out;
1475         }
1476
1477         dprintk("vino_queue_remove(): id = %d\n", *id);
1478         ret = q->buffer[*id];
1479 out:
1480         spin_unlock_irqrestore(&q->queue_lock, flags);
1481
1482         return ret;
1483 }
1484
1485 static struct
1486 vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
1487                                         unsigned int id)
1488 {
1489         struct vino_framebuffer *ret = NULL;
1490         unsigned long flags;
1491
1492         if (q->magic != VINO_QUEUE_MAGIC) {
1493                 return ret;
1494         }
1495
1496         spin_lock_irqsave(&q->queue_lock, flags);
1497
1498         if (q->length == 0)
1499                 goto out;
1500
1501         if (id >= q->length)
1502                 goto out;
1503
1504         ret = q->buffer[id];
1505  out:
1506         spin_unlock_irqrestore(&q->queue_lock, flags);
1507
1508         return ret;
1509 }
1510
1511 static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
1512 {
1513         unsigned int length = 0;
1514         unsigned long flags;
1515
1516         if (q->magic != VINO_QUEUE_MAGIC) {
1517                 return length;
1518         }
1519
1520         spin_lock_irqsave(&q->queue_lock, flags);
1521         length = q->length;
1522         spin_unlock_irqrestore(&q->queue_lock, flags);
1523
1524         return length;
1525 }
1526
1527 static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
1528 {
1529         unsigned int i;
1530         int ret = 0;
1531         unsigned long flags;
1532
1533         if (q->magic != VINO_QUEUE_MAGIC) {
1534                 return ret;
1535         }
1536
1537         spin_lock_irqsave(&q->queue_lock, flags);
1538         for (i = 0; i < q->length; i++) {
1539                 if (q->buffer[i]->map_count > 0) {
1540                         ret = 1;
1541                         break;
1542                 }
1543         }
1544         spin_unlock_irqrestore(&q->queue_lock, flags);
1545
1546         return ret;
1547 }
1548
1549 /* VINO functions */
1550
1551 /* execute with input_lock locked */
1552 static void vino_update_line_size(struct vino_channel_settings *vcs)
1553 {
1554         unsigned int w = vcs->clipping.right - vcs->clipping.left;
1555         unsigned int d = vcs->decimation;
1556         unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
1557         unsigned int lsize;
1558
1559         dprintk("update_line_size(): before: w = %d, d = %d, "
1560                 "line_size = %d\n", w, d, vcs->line_size);
1561
1562         /* line size must be multiple of 8 bytes */
1563         lsize = (bpp * (w / d)) & ~7;
1564         w = (lsize / bpp) * d;
1565
1566         vcs->clipping.right = vcs->clipping.left + w;
1567         vcs->line_size = lsize;
1568
1569         dprintk("update_line_size(): after: w = %d, d = %d, "
1570                 "line_size = %d\n", w, d, vcs->line_size);
1571 }
1572
1573 /* execute with input_lock locked */
1574 static void vino_set_clipping(struct vino_channel_settings *vcs,
1575                               unsigned int x, unsigned int y,
1576                               unsigned int w, unsigned int h)
1577 {
1578         unsigned int maxwidth, maxheight;
1579         unsigned int d;
1580
1581         maxwidth = vino_data_norms[vcs->data_norm].width;
1582         maxheight = vino_data_norms[vcs->data_norm].height;
1583         d = vcs->decimation;
1584
1585         y &= ~1;        /* odd/even fields */
1586
1587         if (x > maxwidth) {
1588                 x = 0;
1589         }
1590         if (y > maxheight) {
1591                 y = 0;
1592         }
1593
1594         if (((w / d) < VINO_MIN_WIDTH)
1595             || ((h / d) < VINO_MIN_HEIGHT)) {
1596                 w = VINO_MIN_WIDTH * d;
1597                 h = VINO_MIN_HEIGHT * d;
1598         }
1599
1600         if ((x + w) > maxwidth) {
1601                 w = maxwidth - x;
1602                 if ((w / d) < VINO_MIN_WIDTH)
1603                         x = maxwidth - VINO_MIN_WIDTH * d;
1604         }
1605         if ((y + h) > maxheight) {
1606                 h = maxheight - y;
1607                 if ((h / d) < VINO_MIN_HEIGHT)
1608                         y = maxheight - VINO_MIN_HEIGHT * d;
1609         }
1610
1611         vcs->clipping.left = x;
1612         vcs->clipping.top = y;
1613         vcs->clipping.right = x + w;
1614         vcs->clipping.bottom = y + h;
1615
1616         vino_update_line_size(vcs);
1617
1618         dprintk("clipping %d, %d, %d, %d / %d - %d\n",
1619                 vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
1620                 vcs->clipping.bottom, vcs->decimation, vcs->line_size);
1621 }
1622
1623 /* execute with input_lock locked */
1624 static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
1625 {
1626         vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
1627                           vino_data_norms[vcs->data_norm].height);
1628 }
1629
1630 /* execute with input_lock locked */
1631 static void vino_set_scaling(struct vino_channel_settings *vcs,
1632                              unsigned int w, unsigned int h)
1633 {
1634         unsigned int x, y, curw, curh, d;
1635
1636         x = vcs->clipping.left;
1637         y = vcs->clipping.top;
1638         curw = vcs->clipping.right - vcs->clipping.left;
1639         curh = vcs->clipping.bottom - vcs->clipping.top;
1640
1641         d = max(curw / w, curh / h);
1642
1643         dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
1644                 w, h, curw, curh, d);
1645
1646         if (d < 1) {
1647                 d = 1;
1648         } else if (d > 8) {
1649                 d = 8;
1650         }
1651
1652         vcs->decimation = d;
1653         vino_set_clipping(vcs, x, y, w * d, h * d);
1654
1655         dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
1656                 vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
1657                 vcs->decimation, vcs->line_size);
1658 }
1659
1660 /* execute with input_lock locked */
1661 static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
1662 {
1663         vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
1664                          vcs->clipping.bottom - vcs->clipping.top);
1665 }
1666
1667 /* execute with input_lock locked */
1668 static void vino_set_framerate(struct vino_channel_settings *vcs,
1669                                unsigned int fps)
1670 {
1671         unsigned int mask;
1672
1673         switch (vcs->data_norm) {
1674         case VINO_DATA_NORM_NTSC:
1675         case VINO_DATA_NORM_D1:
1676                 fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
1677
1678                 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1679                         fps = vino_data_norms[vcs->data_norm].fps_min;
1680                 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1681                         fps = vino_data_norms[vcs->data_norm].fps_max;
1682
1683                 switch (fps) {
1684                 case 6:
1685                         mask = 0x003;
1686                         break;
1687                 case 12:
1688                         mask = 0x0c3;
1689                         break;
1690                 case 18:
1691                         mask = 0x333;
1692                         break;
1693                 case 24:
1694                         mask = 0x3ff;
1695                         break;
1696                 case 30:
1697                         mask = 0xfff;
1698                         break;
1699                 default:
1700                         mask = VINO_FRAMERT_FULL;
1701                 }
1702                 vcs->framert_reg = VINO_FRAMERT_RT(mask);
1703                 break;
1704         case VINO_DATA_NORM_PAL:
1705         case VINO_DATA_NORM_SECAM:
1706                 fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
1707
1708                 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1709                         fps = vino_data_norms[vcs->data_norm].fps_min;
1710                 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1711                         fps = vino_data_norms[vcs->data_norm].fps_max;
1712
1713                 switch (fps) {
1714                 case 5:
1715                         mask = 0x003;
1716                         break;
1717                 case 10:
1718                         mask = 0x0c3;
1719                         break;
1720                 case 15:
1721                         mask = 0x333;
1722                         break;
1723                 case 20:
1724                         mask = 0x0ff;
1725                         break;
1726                 case 25:
1727                         mask = 0x3ff;
1728                         break;
1729                 default:
1730                         mask = VINO_FRAMERT_FULL;
1731                 }
1732                 vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
1733                 break;
1734         }
1735
1736         vcs->fps = fps;
1737 }
1738
1739 /* execute with input_lock locked */
1740 static inline void vino_set_default_framerate(struct
1741                                               vino_channel_settings *vcs)
1742 {
1743         vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
1744 }
1745
1746 /*
1747  * Prepare VINO for DMA transfer...
1748  * (execute only with vino_lock and input_lock locked)
1749  */
1750 static int vino_dma_setup(struct vino_channel_settings *vcs,
1751                           struct vino_framebuffer *fb)
1752 {
1753         u32 ctrl, intr;
1754         struct sgi_vino_channel *ch;
1755         const struct vino_data_norm *norm;
1756
1757         dprintk("vino_dma_setup():\n");
1758
1759         vcs->field = 0;
1760         fb->frame_counter = 0;
1761
1762         ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1763         norm = &vino_data_norms[vcs->data_norm];
1764
1765         ch->page_index = 0;
1766         ch->line_count = 0;
1767
1768         /* VINO line size register is set 8 bytes less than actual */
1769         ch->line_size = vcs->line_size - 8;
1770
1771         /* let VINO know where to transfer data */
1772         ch->start_desc_tbl = fb->desc_table.dma;
1773         ch->next_4_desc = fb->desc_table.dma;
1774
1775         /* give vino time to fetch the first four descriptors, 5 usec
1776          * should be more than enough time */
1777         udelay(VINO_DESC_FETCH_DELAY);
1778
1779         dprintk("vino_dma_setup(): start desc = %08x, next 4 desc = %08x\n",
1780                 ch->start_desc_tbl, ch->next_4_desc);
1781
1782         /* set the alpha register */
1783         ch->alpha = vcs->alpha;
1784
1785         /* set clipping registers */
1786         ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
1787                 VINO_CLIP_EVEN(norm->even.top +
1788                                vcs->clipping.top / 2) |
1789                 VINO_CLIP_X(vcs->clipping.left);
1790         ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
1791                                      vcs->clipping.bottom / 2 - 1) |
1792                 VINO_CLIP_EVEN(norm->even.top +
1793                                vcs->clipping.bottom / 2 - 1) |
1794                 VINO_CLIP_X(vcs->clipping.right);
1795
1796         /* set the size of actual content in the buffer (DECIMATION !) */
1797         fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
1798                          vcs->decimation) *
1799                 ((vcs->clipping.bottom - vcs->clipping.top) /
1800                  vcs->decimation) *
1801                 vino_data_formats[vcs->data_format].bpp;
1802
1803         ch->frame_rate = vcs->framert_reg;
1804
1805         ctrl = vino->control;
1806         intr = vino->intr_status;
1807
1808         if (vcs->channel == VINO_CHANNEL_A) {
1809                 /* All interrupt conditions for this channel was cleared
1810                  * so clear the interrupt status register and enable
1811                  * interrupts */
1812                 intr &= ~VINO_INTSTAT_A;
1813                 ctrl |= VINO_CTRL_A_INT;
1814
1815                 /* enable synchronization */
1816                 ctrl |= VINO_CTRL_A_SYNC_ENBL;
1817
1818                 /* enable frame assembly */
1819                 ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
1820
1821                 /* set decimation used */
1822                 if (vcs->decimation < 2)
1823                         ctrl &= ~VINO_CTRL_A_DEC_ENBL;
1824                 else {
1825                         ctrl |= VINO_CTRL_A_DEC_ENBL;
1826                         ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
1827                         ctrl |= (vcs->decimation - 1) <<
1828                                 VINO_CTRL_A_DEC_SCALE_SHIFT;
1829                 }
1830
1831                 /* select input interface */
1832                 if (vcs->input == VINO_INPUT_D1)
1833                         ctrl |= VINO_CTRL_A_SELECT;
1834                 else
1835                         ctrl &= ~VINO_CTRL_A_SELECT;
1836
1837                 /* palette */
1838                 ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
1839                           VINO_CTRL_A_DITHER);
1840         } else {
1841                 intr &= ~VINO_INTSTAT_B;
1842                 ctrl |= VINO_CTRL_B_INT;
1843
1844                 ctrl |= VINO_CTRL_B_SYNC_ENBL;
1845                 ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
1846
1847                 if (vcs->decimation < 2)
1848                         ctrl &= ~VINO_CTRL_B_DEC_ENBL;
1849                 else {
1850                         ctrl |= VINO_CTRL_B_DEC_ENBL;
1851                         ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
1852                         ctrl |= (vcs->decimation - 1) <<
1853                                 VINO_CTRL_B_DEC_SCALE_SHIFT;
1854
1855                 }
1856                 if (vcs->input == VINO_INPUT_D1)
1857                         ctrl |= VINO_CTRL_B_SELECT;
1858                 else
1859                         ctrl &= ~VINO_CTRL_B_SELECT;
1860
1861                 ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
1862                           VINO_CTRL_B_DITHER);
1863         }
1864
1865         /* set palette */
1866         fb->data_format = vcs->data_format;
1867
1868         switch (vcs->data_format) {
1869                 case VINO_DATA_FMT_GREY:
1870                         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1871                                 VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
1872                         break;
1873                 case VINO_DATA_FMT_RGB32:
1874                         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1875                                 VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
1876                         break;
1877                 case VINO_DATA_FMT_YUV:
1878                         /* nothing needs to be done */
1879                         break;
1880                 case VINO_DATA_FMT_RGB332:
1881                         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1882                                 VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
1883                                 VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
1884                         break;
1885         }
1886
1887         vino->intr_status = intr;
1888         vino->control = ctrl;
1889
1890         return 0;
1891 }
1892
1893 /* (execute only with vino_lock locked) */
1894 static inline void vino_dma_start(struct vino_channel_settings *vcs)
1895 {
1896         u32 ctrl = vino->control;
1897
1898         dprintk("vino_dma_start():\n");
1899         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1900                 VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
1901         vino->control = ctrl;
1902 }
1903
1904 /* (execute only with vino_lock locked) */
1905 static inline void vino_dma_stop(struct vino_channel_settings *vcs)
1906 {
1907         u32 ctrl = vino->control;
1908
1909         ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1910                 ~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
1911         ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1912                 ~VINO_CTRL_A_INT : ~VINO_CTRL_B_INT;
1913         vino->control = ctrl;
1914         dprintk("vino_dma_stop():\n");
1915 }
1916
1917 /*
1918  * Load dummy page to descriptor registers. This prevents generating of
1919  * spurious interrupts. (execute only with vino_lock locked)
1920  */
1921 static void vino_clear_interrupt(struct vino_channel_settings *vcs)
1922 {
1923         struct sgi_vino_channel *ch;
1924
1925         ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1926
1927         ch->page_index = 0;
1928         ch->line_count = 0;
1929
1930         ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
1931         ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
1932
1933         udelay(VINO_DESC_FETCH_DELAY);
1934         dprintk("channel %c clear interrupt condition\n",
1935                (vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
1936 }
1937
1938 static int vino_capture(struct vino_channel_settings *vcs,
1939                         struct vino_framebuffer *fb)
1940 {
1941         int err = 0;
1942         unsigned long flags, flags2;
1943
1944         spin_lock_irqsave(&fb->state_lock, flags);
1945
1946         if (fb->state == VINO_FRAMEBUFFER_IN_USE)
1947                 err = -EBUSY;
1948         fb->state = VINO_FRAMEBUFFER_IN_USE;
1949
1950         spin_unlock_irqrestore(&fb->state_lock, flags);
1951
1952         if (err)
1953                 return err;
1954
1955         spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
1956         spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
1957
1958         vino_dma_setup(vcs, fb);
1959         vino_dma_start(vcs);
1960
1961         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
1962         spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
1963
1964         return err;
1965 }
1966
1967 static
1968 struct vino_framebuffer *vino_capture_enqueue(struct
1969                                               vino_channel_settings *vcs,
1970                                               unsigned int index)
1971 {
1972         struct vino_framebuffer *fb;
1973         unsigned long flags;
1974
1975         dprintk("vino_capture_enqueue():\n");
1976
1977         spin_lock_irqsave(&vcs->capture_lock, flags);
1978
1979         fb = vino_queue_add(&vcs->fb_queue, index);
1980         if (fb == NULL) {
1981                 dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
1982                         "queue full?\n");
1983                 goto out;
1984         }
1985 out:
1986         spin_unlock_irqrestore(&vcs->capture_lock, flags);
1987
1988         return fb;
1989 }
1990
1991 static int vino_capture_next(struct vino_channel_settings *vcs, int start)
1992 {
1993         struct vino_framebuffer *fb;
1994         unsigned int incoming, id;
1995         int err = 0;
1996         unsigned long flags;
1997
1998         dprintk("vino_capture_next():\n");
1999
2000         spin_lock_irqsave(&vcs->capture_lock, flags);
2001
2002         if (start) {
2003                 /* start capture only if capture isn't in progress already */
2004                 if (vcs->capturing) {
2005                         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2006                         return 0;
2007                 }
2008
2009         } else {
2010                 /* capture next frame:
2011                  * stop capture if capturing is not set */
2012                 if (!vcs->capturing) {
2013                         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2014                         return 0;
2015                 }
2016         }
2017
2018         err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
2019         if (err) {
2020                 dprintk("vino_capture_next(): vino_queue_get_incoming() "
2021                         "failed\n");
2022                 err = -EINVAL;
2023                 goto out;
2024         }
2025         if (incoming == 0) {
2026                 dprintk("vino_capture_next(): no buffers available\n");
2027                 goto out;
2028         }
2029
2030         fb = vino_queue_peek(&vcs->fb_queue, &id);
2031         if (fb == NULL) {
2032                 dprintk("vino_capture_next(): vino_queue_peek() failed\n");
2033                 err = -EINVAL;
2034                 goto out;
2035         }
2036
2037         if (start) {
2038                 vcs->capturing = 1;
2039         }
2040
2041         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2042
2043         err = vino_capture(vcs, fb);
2044
2045         return err;
2046
2047 out:
2048         vcs->capturing = 0;
2049         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2050
2051         return err;
2052 }
2053
2054 static inline int vino_is_capturing(struct vino_channel_settings *vcs)
2055 {
2056         int ret;
2057         unsigned long flags;
2058
2059         spin_lock_irqsave(&vcs->capture_lock, flags);
2060
2061         ret = vcs->capturing;
2062
2063         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2064
2065         return ret;
2066 }
2067
2068 /* waits until a frame is captured */
2069 static int vino_wait_for_frame(struct vino_channel_settings *vcs)
2070 {
2071         wait_queue_t wait;
2072         int err = 0;
2073
2074         dprintk("vino_wait_for_frame():\n");
2075
2076         init_waitqueue_entry(&wait, current);
2077         /* add ourselves into wait queue */
2078         add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2079
2080         /* to ensure that schedule_timeout will return immediately
2081          * if VINO interrupt was triggered meanwhile */
2082         schedule_timeout_interruptible(msecs_to_jiffies(100));
2083
2084         if (signal_pending(current))
2085                 err = -EINTR;
2086
2087         remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2088
2089         dprintk("vino_wait_for_frame(): waiting for frame %s\n",
2090                 err ? "failed" : "ok");
2091
2092         return err;
2093 }
2094
2095 /* the function assumes that PAGE_SIZE % 4 == 0 */
2096 static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
2097         unsigned char *pageptr;
2098         unsigned int page, i;
2099         unsigned char a;
2100
2101         for (page = 0; page < fb->desc_table.page_count; page++) {
2102                 pageptr = (unsigned char *)fb->desc_table.virtual[page];
2103
2104                 for (i = 0; i < PAGE_SIZE; i += 4) {
2105                         a = pageptr[0];
2106                         pageptr[0] = pageptr[3];
2107                         pageptr[1] = pageptr[2];
2108                         pageptr[2] = pageptr[1];
2109                         pageptr[3] = a;
2110                         pageptr += 4;
2111                 }
2112         }
2113 }
2114
2115 /* checks if the buffer is in correct state and syncs data */
2116 static int vino_check_buffer(struct vino_channel_settings *vcs,
2117                              struct vino_framebuffer *fb)
2118 {
2119         int err = 0;
2120         unsigned long flags;
2121
2122         dprintk("vino_check_buffer():\n");
2123
2124         spin_lock_irqsave(&fb->state_lock, flags);
2125         switch (fb->state) {
2126         case VINO_FRAMEBUFFER_IN_USE:
2127                 err = -EIO;
2128                 break;
2129         case VINO_FRAMEBUFFER_READY:
2130                 vino_sync_buffer(fb);
2131                 fb->state = VINO_FRAMEBUFFER_UNUSED;
2132                 break;
2133         default:
2134                 err = -EINVAL;
2135         }
2136         spin_unlock_irqrestore(&fb->state_lock, flags);
2137
2138         if (!err) {
2139                 if (vino_pixel_conversion
2140                     && (fb->data_format == VINO_DATA_FMT_RGB32)) {
2141                         vino_convert_to_rgba(fb);
2142                 }
2143         } else if (err && (err != -EINVAL)) {
2144                 dprintk("vino_check_buffer(): buffer not ready\n");
2145
2146                 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2147                 vino_dma_stop(vcs);
2148                 vino_clear_interrupt(vcs);
2149                 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2150         }
2151
2152         return err;
2153 }
2154
2155 /* forcefully terminates capture */
2156 static void vino_capture_stop(struct vino_channel_settings *vcs)
2157 {
2158         unsigned int incoming = 0, outgoing = 0, id;
2159         unsigned long flags, flags2;
2160
2161         dprintk("vino_capture_stop():\n");
2162
2163         spin_lock_irqsave(&vcs->capture_lock, flags);
2164
2165         /* unset capturing to stop queue processing */
2166         vcs->capturing = 0;
2167
2168         spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
2169
2170         vino_dma_stop(vcs);
2171         vino_clear_interrupt(vcs);
2172
2173         spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
2174
2175         /* remove all items from the queue */
2176         if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2177                 dprintk("vino_capture_stop(): "
2178                         "vino_queue_get_incoming() failed\n");
2179                 goto out;
2180         }
2181         while (incoming > 0) {
2182                 vino_queue_transfer(&vcs->fb_queue);
2183
2184                 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2185                         dprintk("vino_capture_stop(): "
2186                                 "vino_queue_get_incoming() failed\n");
2187                         goto out;
2188                 }
2189         }
2190
2191         if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2192                 dprintk("vino_capture_stop(): "
2193                         "vino_queue_get_outgoing() failed\n");
2194                 goto out;
2195         }
2196         while (outgoing > 0) {
2197                 vino_queue_remove(&vcs->fb_queue, &id);
2198
2199                 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2200                         dprintk("vino_capture_stop(): "
2201                                 "vino_queue_get_outgoing() failed\n");
2202                         goto out;
2203                 }
2204         }
2205
2206 out:
2207         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2208 }
2209
2210 #if 0
2211 static int vino_capture_failed(struct vino_channel_settings *vcs)
2212 {
2213         struct vino_framebuffer *fb;
2214         unsigned long flags;
2215         unsigned int i;
2216         int ret;
2217
2218         dprintk("vino_capture_failed():\n");
2219
2220         spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2221
2222         vino_dma_stop(vcs);
2223         vino_clear_interrupt(vcs);
2224
2225         spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2226
2227         ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
2228         if (ret == VINO_QUEUE_ERROR) {
2229                 dprintk("vino_queue_get_incoming() failed\n");
2230                 return -EINVAL;
2231         }
2232         if (i == 0) {
2233                 /* no buffers to process */
2234                 return 0;
2235         }
2236
2237         fb = vino_queue_peek(&vcs->fb_queue, &i);
2238         if (fb == NULL) {
2239                 dprintk("vino_queue_peek() failed\n");
2240                 return -EINVAL;
2241         }
2242
2243         spin_lock_irqsave(&fb->state_lock, flags);
2244         if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
2245                 fb->state = VINO_FRAMEBUFFER_UNUSED;
2246                 vino_queue_transfer(&vcs->fb_queue);
2247                 vino_queue_remove(&vcs->fb_queue, &i);
2248                 /* we should actually discard the newest frame,
2249                  * but who cares ... */
2250         }
2251         spin_unlock_irqrestore(&fb->state_lock, flags);
2252
2253         return 0;
2254 }
2255 #endif
2256
2257 static void vino_skip_frame(struct vino_channel_settings *vcs)
2258 {
2259         struct vino_framebuffer *fb;
2260         unsigned long flags;
2261         unsigned int id;
2262
2263         spin_lock_irqsave(&vcs->capture_lock, flags);
2264         fb = vino_queue_peek(&vcs->fb_queue, &id);
2265         if (!fb) {
2266                 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2267                 dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
2268                 return;
2269         }
2270         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2271
2272         spin_lock_irqsave(&fb->state_lock, flags);
2273         fb->state = VINO_FRAMEBUFFER_UNUSED;
2274         spin_unlock_irqrestore(&fb->state_lock, flags);
2275
2276         vino_capture_next(vcs, 0);
2277 }
2278
2279 static void vino_frame_done(struct vino_channel_settings *vcs)
2280 {
2281         struct vino_framebuffer *fb;
2282         unsigned long flags;
2283
2284         spin_lock_irqsave(&vcs->capture_lock, flags);
2285         fb = vino_queue_transfer(&vcs->fb_queue);
2286         if (!fb) {
2287                 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2288                 dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
2289                 return;
2290         }
2291         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2292
2293         fb->frame_counter = vcs->int_data.frame_counter;
2294         memcpy(&fb->timestamp, &vcs->int_data.timestamp,
2295                sizeof(struct timeval));
2296
2297         spin_lock_irqsave(&fb->state_lock, flags);
2298         if (fb->state == VINO_FRAMEBUFFER_IN_USE)
2299                 fb->state = VINO_FRAMEBUFFER_READY;
2300         spin_unlock_irqrestore(&fb->state_lock, flags);
2301
2302         wake_up(&vcs->fb_queue.frame_wait_queue);
2303
2304         vino_capture_next(vcs, 0);
2305 }
2306
2307 static void vino_capture_tasklet(unsigned long channel) {
2308         struct vino_channel_settings *vcs;
2309
2310         vcs = (channel == VINO_CHANNEL_A)
2311                 ? &vino_drvdata->a : &vino_drvdata->b;
2312
2313         if (vcs->int_data.skip)
2314                 vcs->int_data.skip_count++;
2315
2316         if (vcs->int_data.skip && (vcs->int_data.skip_count
2317                                    <= VINO_MAX_FRAME_SKIP_COUNT)) {
2318                 vino_skip_frame(vcs);
2319         } else {
2320                 vcs->int_data.skip_count = 0;
2321                 vino_frame_done(vcs);
2322         }
2323 }
2324
2325 static irqreturn_t vino_interrupt(int irq, void *dev_id)
2326 {
2327         u32 ctrl, intr;
2328         unsigned int fc_a, fc_b;
2329         int handled_a = 0, skip_a = 0, done_a = 0;
2330         int handled_b = 0, skip_b = 0, done_b = 0;
2331
2332 #ifdef VINO_DEBUG_INT
2333         int loop = 0;
2334         unsigned int line_count = vino->a.line_count,
2335                 page_index = vino->a.page_index,
2336                 field_counter = vino->a.field_counter,
2337                 start_desc_tbl = vino->a.start_desc_tbl,
2338                 next_4_desc = vino->a.next_4_desc;
2339         unsigned int line_count_2,
2340                 page_index_2,
2341                 field_counter_2,
2342                 start_desc_tbl_2,
2343                 next_4_desc_2;
2344 #endif
2345
2346         spin_lock(&vino_drvdata->vino_lock);
2347
2348         while ((intr = vino->intr_status)) {
2349                 fc_a = vino->a.field_counter >> 1;
2350                 fc_b = vino->b.field_counter >> 1;
2351
2352                 /* handle error-interrupts in some special way ?
2353                  * --> skips frames */
2354                 if (intr & VINO_INTSTAT_A) {
2355                         if (intr & VINO_INTSTAT_A_EOF) {
2356                                 vino_drvdata->a.field++;
2357                                 if (vino_drvdata->a.field > 1) {
2358                                         vino_dma_stop(&vino_drvdata->a);
2359                                         vino_clear_interrupt(&vino_drvdata->a);
2360                                         vino_drvdata->a.field = 0;
2361                                         done_a = 1;
2362                                 } else {
2363                                         if (vino->a.page_index
2364                                             != vino_drvdata->a.line_size) {
2365                                                 vino->a.line_count = 0;
2366                                                 vino->a.page_index =
2367                                                         vino_drvdata->
2368                                                         a.line_size;
2369                                                 vino->a.next_4_desc =
2370                                                         vino->a.start_desc_tbl;
2371                                         }
2372                                 }
2373                                 dprintk("channel A end-of-field "
2374                                         "interrupt: %04x\n", intr);
2375                         } else {
2376                                 vino_dma_stop(&vino_drvdata->a);
2377                                 vino_clear_interrupt(&vino_drvdata->a);
2378                                 vino_drvdata->a.field = 0;
2379                                 skip_a = 1;
2380                                 dprintk("channel A error interrupt: %04x\n",
2381                                         intr);
2382                         }
2383
2384 #ifdef VINO_DEBUG_INT
2385                         line_count_2 = vino->a.line_count;
2386                         page_index_2 = vino->a.page_index;
2387                         field_counter_2 = vino->a.field_counter;
2388                         start_desc_tbl_2 = vino->a.start_desc_tbl;
2389                         next_4_desc_2 = vino->a.next_4_desc;
2390
2391                         printk("intr = %04x, loop = %d, field = %d\n",
2392                                intr, loop, vino_drvdata->a.field);
2393                         printk("1- line count = %04d, page index = %04d, "
2394                                "start = %08x, next = %08x\n"
2395                                "   fieldc = %d, framec = %d\n",
2396                                line_count, page_index, start_desc_tbl,
2397                                next_4_desc, field_counter, fc_a);
2398                         printk("12-line count = %04d, page index = %04d, "
2399                                "   start = %08x, next = %08x\n",
2400                                line_count_2, page_index_2, start_desc_tbl_2,
2401                                next_4_desc_2);
2402
2403                         if (done_a)
2404                                 printk("\n");
2405 #endif
2406                 }
2407
2408                 if (intr & VINO_INTSTAT_B) {
2409                         if (intr & VINO_INTSTAT_B_EOF) {
2410                                 vino_drvdata->b.field++;
2411                                 if (vino_drvdata->b.field > 1) {
2412                                         vino_dma_stop(&vino_drvdata->b);
2413                                         vino_clear_interrupt(&vino_drvdata->b);
2414                                         vino_drvdata->b.field = 0;
2415                                         done_b = 1;
2416                                 }
2417                                 dprintk("channel B end-of-field "
2418                                         "interrupt: %04x\n", intr);
2419                         } else {
2420                                 vino_dma_stop(&vino_drvdata->b);
2421                                 vino_clear_interrupt(&vino_drvdata->b);
2422                                 vino_drvdata->b.field = 0;
2423                                 skip_b = 1;
2424                                 dprintk("channel B error interrupt: %04x\n",
2425                                         intr);
2426                         }
2427                 }
2428
2429                 /* Always remember to clear interrupt status.
2430                  * Disable VINO interrupts while we do this. */
2431                 ctrl = vino->control;
2432                 vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
2433                 vino->intr_status = ~intr;
2434                 vino->control = ctrl;
2435
2436                 spin_unlock(&vino_drvdata->vino_lock);
2437
2438                 if ((!handled_a) && (done_a || skip_a)) {
2439                         if (!skip_a) {
2440                                 do_gettimeofday(&vino_drvdata->
2441                                                 a.int_data.timestamp);
2442                                 vino_drvdata->a.int_data.frame_counter = fc_a;
2443                         }
2444                         vino_drvdata->a.int_data.skip = skip_a;
2445
2446                         dprintk("channel A %s, interrupt: %d\n",
2447                                 skip_a ? "skipping frame" : "frame done",
2448                                 intr);
2449                         tasklet_hi_schedule(&vino_tasklet_a);
2450                         handled_a = 1;
2451                 }
2452
2453                 if ((!handled_b) && (done_b || skip_b)) {
2454                         if (!skip_b) {
2455                                 do_gettimeofday(&vino_drvdata->
2456                                                 b.int_data.timestamp);
2457                                 vino_drvdata->b.int_data.frame_counter = fc_b;
2458                         }
2459                         vino_drvdata->b.int_data.skip = skip_b;
2460
2461                         dprintk("channel B %s, interrupt: %d\n",
2462                                 skip_b ? "skipping frame" : "frame done",
2463                                 intr);
2464                         tasklet_hi_schedule(&vino_tasklet_b);
2465                         handled_b = 1;
2466                 }
2467
2468 #ifdef VINO_DEBUG_INT
2469                 loop++;
2470 #endif
2471                 spin_lock(&vino_drvdata->vino_lock);
2472         }
2473
2474         spin_unlock(&vino_drvdata->vino_lock);
2475
2476         return IRQ_HANDLED;
2477 }
2478
2479 /* VINO video input management */
2480
2481 static int vino_get_saa7191_input(int input)
2482 {
2483         switch (input) {
2484         case VINO_INPUT_COMPOSITE:
2485                 return SAA7191_INPUT_COMPOSITE;
2486         case VINO_INPUT_SVIDEO:
2487                 return SAA7191_INPUT_SVIDEO;
2488         default:
2489                 printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
2490                        "invalid input!\n");
2491                 return -1;
2492         }
2493 }
2494
2495 static int vino_get_saa7191_norm(unsigned int data_norm)
2496 {
2497         switch (data_norm) {
2498         case VINO_DATA_NORM_AUTO:
2499                 return SAA7191_NORM_AUTO;
2500         case VINO_DATA_NORM_AUTO_EXT:
2501                 return SAA7191_NORM_AUTO_EXT;
2502         case VINO_DATA_NORM_PAL:
2503                 return SAA7191_NORM_PAL;
2504         case VINO_DATA_NORM_NTSC:
2505                 return SAA7191_NORM_NTSC;
2506         case VINO_DATA_NORM_SECAM:
2507                 return SAA7191_NORM_SECAM;
2508         default:
2509                 printk(KERN_ERR "VINO: vino_get_saa7191_norm(): "
2510                        "invalid norm!\n");
2511                 return -1;
2512         }
2513 }
2514
2515 static int vino_get_from_saa7191_norm(int saa7191_norm)
2516 {
2517         switch (saa7191_norm) {
2518         case SAA7191_NORM_PAL:
2519                 return VINO_DATA_NORM_PAL;
2520         case SAA7191_NORM_NTSC:
2521                 return VINO_DATA_NORM_NTSC;
2522         case SAA7191_NORM_SECAM:
2523                 return VINO_DATA_NORM_SECAM;
2524         default:
2525                 printk(KERN_ERR "VINO: vino_get_from_saa7191_norm(): "
2526                        "invalid norm!\n");
2527                 return VINO_DATA_NORM_NONE;
2528         }
2529 }
2530
2531 static int vino_saa7191_set_norm(unsigned int *data_norm)
2532 {
2533         int saa7191_norm, new_data_norm;
2534         int err = 0;
2535
2536         saa7191_norm = vino_get_saa7191_norm(*data_norm);
2537
2538         err = i2c_decoder_command(DECODER_SAA7191_SET_NORM,
2539                                   &saa7191_norm);
2540         if (err)
2541                 goto out;
2542
2543         if ((*data_norm == VINO_DATA_NORM_AUTO)
2544             || (*data_norm == VINO_DATA_NORM_AUTO_EXT)) {
2545                 struct saa7191_status status;
2546
2547                 err = i2c_decoder_command(DECODER_SAA7191_GET_STATUS,
2548                                           &status);
2549                 if (err)
2550                         goto out;
2551
2552                 new_data_norm =
2553                         vino_get_from_saa7191_norm(status.norm);
2554                 if (new_data_norm == VINO_DATA_NORM_NONE) {
2555                         err = -EINVAL;
2556                         goto out;
2557                 }
2558
2559                 *data_norm = (unsigned int)new_data_norm;
2560         }
2561
2562 out:
2563         return err;
2564 }
2565
2566 /* execute with input_lock locked */
2567 static int vino_is_input_owner(struct vino_channel_settings *vcs)
2568 {
2569         switch(vcs->input) {
2570         case VINO_INPUT_COMPOSITE:
2571         case VINO_INPUT_SVIDEO:
2572                 return (vino_drvdata->decoder.owner == vcs->channel);
2573         case VINO_INPUT_D1:
2574                 return (vino_drvdata->camera.owner == vcs->channel);
2575         default:
2576                 return 0;
2577         }
2578 }
2579
2580 static int vino_acquire_input(struct vino_channel_settings *vcs)
2581 {
2582         unsigned long flags;
2583         int ret = 0;
2584
2585         dprintk("vino_acquire_input():\n");
2586
2587         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2588
2589         /* First try D1 and then SAA7191 */
2590         if (vino_drvdata->camera.driver
2591             && (vino_drvdata->camera.owner == VINO_NO_CHANNEL)) {
2592                 if (i2c_use_client(vino_drvdata->camera.driver)) {
2593                         ret = -ENODEV;
2594                         goto out;
2595                 }
2596
2597                 vino_drvdata->camera.owner = vcs->channel;
2598                 vcs->input = VINO_INPUT_D1;
2599                 vcs->data_norm = VINO_DATA_NORM_D1;
2600         } else if (vino_drvdata->decoder.driver
2601                    && (vino_drvdata->decoder.owner == VINO_NO_CHANNEL)) {
2602                 int input, data_norm;
2603                 int saa7191_input;
2604
2605                 if (i2c_use_client(vino_drvdata->decoder.driver)) {
2606                         ret = -ENODEV;
2607                         goto out;
2608                 }
2609
2610                 input = VINO_INPUT_COMPOSITE;
2611
2612                 saa7191_input = vino_get_saa7191_input(input);
2613                 ret = i2c_decoder_command(DECODER_SET_INPUT,
2614                                           &saa7191_input);
2615                 if (ret) {
2616                         ret = -EINVAL;
2617                         goto out;
2618                 }
2619
2620                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2621
2622                 /* Don't hold spinlocks while auto-detecting norm
2623                  * as it may take a while... */
2624
2625                 data_norm = VINO_DATA_NORM_AUTO_EXT;
2626
2627                 ret = vino_saa7191_set_norm(&data_norm);
2628                 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2629                         data_norm = VINO_DATA_NORM_PAL;
2630                         ret = vino_saa7191_set_norm(&data_norm);
2631                 }
2632
2633                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2634
2635                 if (ret) {
2636                         ret = -EINVAL;
2637                         goto out;
2638                 }
2639
2640                 vino_drvdata->decoder.owner = vcs->channel;
2641
2642                 vcs->input = input;
2643                 vcs->data_norm = data_norm;
2644         } else {
2645                 vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
2646                         vino_drvdata->b.input : vino_drvdata->a.input;
2647                 vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
2648                         vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
2649         }
2650
2651         if (vcs->input == VINO_INPUT_NONE) {
2652                 ret = -ENODEV;
2653                 goto out;
2654         }
2655
2656         vino_set_default_clipping(vcs);
2657         vino_set_default_scaling(vcs);
2658         vino_set_default_framerate(vcs);
2659
2660         dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
2661
2662 out:
2663         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2664
2665         return ret;
2666 }
2667
2668 static int vino_set_input(struct vino_channel_settings *vcs, int input)
2669 {
2670         struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2671                 &vino_drvdata->b : &vino_drvdata->a;
2672         unsigned long flags;
2673         int ret = 0;
2674
2675         dprintk("vino_set_input():\n");
2676
2677         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2678
2679         if (vcs->input == input)
2680                 goto out;
2681
2682         switch (input) {
2683         case VINO_INPUT_COMPOSITE:
2684         case VINO_INPUT_SVIDEO:
2685                 if (!vino_drvdata->decoder.driver) {
2686                         ret = -EINVAL;
2687                         goto out;
2688                 }
2689
2690                 if (vino_drvdata->decoder.owner == VINO_NO_CHANNEL) {
2691                         if (i2c_use_client(vino_drvdata->decoder.driver)) {
2692                                 ret = -ENODEV;
2693                                 goto out;
2694                         }
2695                         vino_drvdata->decoder.owner = vcs->channel;
2696                 }
2697
2698                 if (vino_drvdata->decoder.owner == vcs->channel) {
2699                         int data_norm;
2700                         int saa7191_input;
2701
2702                         saa7191_input = vino_get_saa7191_input(input);
2703                         ret = i2c_decoder_command(DECODER_SET_INPUT,
2704                                                   &saa7191_input);
2705                         if (ret) {
2706                                 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2707                                 ret = -EINVAL;
2708                                 goto out;
2709                         }
2710
2711                         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2712
2713                         /* Don't hold spinlocks while auto-detecting norm
2714                          * as it may take a while... */
2715
2716                         data_norm = VINO_DATA_NORM_AUTO_EXT;
2717
2718                         ret = vino_saa7191_set_norm(&data_norm);
2719                         if ((ret  == -EBUSY) || (ret == -EAGAIN)) {
2720                                 data_norm = VINO_DATA_NORM_PAL;
2721                                 ret = vino_saa7191_set_norm(&data_norm);
2722                         }
2723
2724                         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2725
2726                         if (ret) {
2727                                 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2728                                 ret = -EINVAL;
2729                                 goto out;
2730                         }
2731
2732                         vcs->input = input;
2733                         vcs->data_norm = data_norm;
2734                 } else {
2735                         if (input != vcs2->input) {
2736                                 ret = -EBUSY;
2737                                 goto out;
2738                         }
2739
2740                         vcs->input = input;
2741                         vcs->data_norm = vcs2->data_norm;
2742                 }
2743
2744                 if (vino_drvdata->camera.owner == vcs->channel) {
2745                         /* Transfer the ownership or release the input */
2746                         if (vcs2->input == VINO_INPUT_D1) {
2747                                 vino_drvdata->camera.owner = vcs2->channel;
2748                         } else {
2749                                 i2c_release_client(vino_drvdata->
2750                                                    camera.driver);
2751                                 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2752                         }
2753                 }
2754                 break;
2755         case VINO_INPUT_D1:
2756                 if (!vino_drvdata->camera.driver) {
2757                         ret = -EINVAL;
2758                         goto out;
2759                 }
2760
2761                 if (vino_drvdata->camera.owner == VINO_NO_CHANNEL) {
2762                         if (i2c_use_client(vino_drvdata->camera.driver)) {
2763                                 ret = -ENODEV;
2764                                 goto out;
2765                         }
2766                         vino_drvdata->camera.owner = vcs->channel;
2767                 }
2768
2769                 if (vino_drvdata->decoder.owner == vcs->channel) {
2770                         /* Transfer the ownership or release the input */
2771                         if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2772                                  (vcs2->input == VINO_INPUT_SVIDEO)) {
2773                                 vino_drvdata->decoder.owner = vcs2->channel;
2774                         } else {
2775                                 i2c_release_client(vino_drvdata->
2776                                                    decoder.driver);
2777                                 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2778                         }
2779                 }
2780
2781                 vcs->input = input;
2782                 vcs->data_norm = VINO_DATA_NORM_D1;
2783                 break;
2784         default:
2785                 ret = -EINVAL;
2786                 goto out;
2787         }
2788
2789         vino_set_default_clipping(vcs);
2790         vino_set_default_scaling(vcs);
2791         vino_set_default_framerate(vcs);
2792
2793         dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
2794
2795 out:
2796         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2797
2798         return ret;
2799 }
2800
2801 static void vino_release_input(struct vino_channel_settings *vcs)
2802 {
2803         struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2804                 &vino_drvdata->b : &vino_drvdata->a;
2805         unsigned long flags;
2806
2807         dprintk("vino_release_input():\n");
2808
2809         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2810
2811         /* Release ownership of the channel
2812          * and if the other channel takes input from
2813          * the same source, transfer the ownership */
2814         if (vino_drvdata->camera.owner == vcs->channel) {
2815                 if (vcs2->input == VINO_INPUT_D1) {
2816                         vino_drvdata->camera.owner = vcs2->channel;
2817                 } else {
2818                         i2c_release_client(vino_drvdata->camera.driver);
2819                         vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2820                 }
2821         } else if (vino_drvdata->decoder.owner == vcs->channel) {
2822                 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2823                          (vcs2->input == VINO_INPUT_SVIDEO)) {
2824                         vino_drvdata->decoder.owner = vcs2->channel;
2825                 } else {
2826                         i2c_release_client(vino_drvdata->decoder.driver);
2827                         vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2828                 }
2829         }
2830         vcs->input = VINO_INPUT_NONE;
2831
2832         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2833 }
2834
2835 /* execute with input_lock locked */
2836 static int vino_set_data_norm(struct vino_channel_settings *vcs,
2837                               unsigned int data_norm,
2838                               unsigned long *flags)
2839 {
2840         int err = 0;
2841
2842         if (data_norm == vcs->data_norm)
2843                 return 0;
2844
2845         switch (vcs->input) {
2846         case VINO_INPUT_D1:
2847                 /* only one "norm" supported */
2848                 if ((data_norm != VINO_DATA_NORM_D1)
2849                     && (data_norm != VINO_DATA_NORM_AUTO)
2850                     && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2851                         return -EINVAL;
2852                 break;
2853         case VINO_INPUT_COMPOSITE:
2854         case VINO_INPUT_SVIDEO: {
2855                 if ((data_norm != VINO_DATA_NORM_PAL)
2856                     && (data_norm != VINO_DATA_NORM_NTSC)
2857                     && (data_norm != VINO_DATA_NORM_SECAM)
2858                     && (data_norm != VINO_DATA_NORM_AUTO)
2859                     && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2860                         return -EINVAL;
2861
2862                 spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
2863
2864                 /* Don't hold spinlocks while setting norm
2865                  * as it may take a while... */
2866
2867                 err = vino_saa7191_set_norm(&data_norm);
2868
2869                 spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
2870
2871                 if (err)
2872                         goto out;
2873
2874                 vcs->data_norm = data_norm;
2875
2876                 vino_set_default_clipping(vcs);
2877                 vino_set_default_scaling(vcs);
2878                 vino_set_default_framerate(vcs);
2879                 break;
2880         }
2881         default:
2882                 return -EINVAL;
2883         }
2884
2885 out:
2886         return err;
2887 }
2888
2889 /* V4L2 helper functions */
2890
2891 static int vino_find_data_format(__u32 pixelformat)
2892 {
2893         int i;
2894
2895         for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
2896                 if (vino_data_formats[i].pixelformat == pixelformat)
2897                         return i;
2898         }
2899
2900         return VINO_DATA_FMT_NONE;
2901 }
2902
2903 static int vino_enum_data_norm(struct vino_channel_settings *vcs, __u32 index)
2904 {
2905         int data_norm = VINO_DATA_NORM_NONE;
2906         unsigned long flags;
2907
2908         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2909         switch(vcs->input) {
2910         case VINO_INPUT_COMPOSITE:
2911         case VINO_INPUT_SVIDEO:
2912                 if (index == 0) {
2913                         data_norm = VINO_DATA_NORM_PAL;
2914                 } else if (index == 1) {
2915                         data_norm = VINO_DATA_NORM_NTSC;
2916                 } else if (index == 2) {
2917                         data_norm = VINO_DATA_NORM_SECAM;
2918                 }
2919                 break;
2920         case VINO_INPUT_D1:
2921                 if (index == 0) {
2922                         data_norm = VINO_DATA_NORM_D1;
2923                 }
2924                 break;
2925         }
2926         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2927
2928         return data_norm;
2929 }
2930
2931 static int vino_enum_input(struct vino_channel_settings *vcs, __u32 index)
2932 {
2933         int input = VINO_INPUT_NONE;
2934         unsigned long flags;
2935
2936         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2937         if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2938                 switch (index) {
2939                 case 0:
2940                         input = VINO_INPUT_COMPOSITE;
2941                         break;
2942                 case 1:
2943                         input = VINO_INPUT_SVIDEO;
2944                         break;
2945                 case 2:
2946                         input = VINO_INPUT_D1;
2947                         break;
2948                 }
2949         } else if (vino_drvdata->decoder.driver) {
2950                 switch (index) {
2951                 case 0:
2952                         input = VINO_INPUT_COMPOSITE;
2953                         break;
2954                 case 1:
2955                         input = VINO_INPUT_SVIDEO;
2956                         break;
2957                 }
2958         } else if (vino_drvdata->camera.driver) {
2959                 switch (index) {
2960                 case 0:
2961                         input = VINO_INPUT_D1;
2962                         break;
2963                 }
2964         }
2965         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2966
2967         return input;
2968 }
2969
2970 /* execute with input_lock locked */
2971 static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
2972 {
2973         __u32 index = 0;
2974         // FIXME: detect when no inputs available
2975
2976         if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2977                 switch (vcs->input) {
2978                 case VINO_INPUT_COMPOSITE:
2979                         index = 0;
2980                         break;
2981                 case VINO_INPUT_SVIDEO:
2982                         index = 1;
2983                         break;
2984                 case VINO_INPUT_D1:
2985                         index = 2;
2986                         break;
2987                 }
2988         } else if (vino_drvdata->decoder.driver) {
2989                 switch (vcs->input) {
2990                 case VINO_INPUT_COMPOSITE:
2991                         index = 0;
2992                         break;
2993                 case VINO_INPUT_SVIDEO:
2994                         index = 1;
2995                         break;
2996                 }
2997         } else if (vino_drvdata->camera.driver) {
2998                 switch (vcs->input) {
2999                 case VINO_INPUT_D1:
3000                         index = 0;
3001                         break;
3002                 }
3003         }
3004
3005         return index;
3006 }
3007
3008 /* V4L2 ioctls */
3009
3010 static void vino_v4l2_querycap(struct v4l2_capability *cap)
3011 {
3012         memset(cap, 0, sizeof(struct v4l2_capability));
3013
3014         strcpy(cap->driver, vino_driver_name);
3015         strcpy(cap->card, vino_driver_description);
3016         strcpy(cap->bus_info, vino_bus_name);
3017         cap->version = VINO_VERSION_CODE;
3018         cap->capabilities =
3019                 V4L2_CAP_VIDEO_CAPTURE |
3020                 V4L2_CAP_STREAMING;
3021         // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
3022 }
3023
3024 static int vino_v4l2_enuminput(struct vino_channel_settings *vcs,
3025                                struct v4l2_input *i)
3026 {
3027         __u32 index = i->index;
3028         int input;
3029         dprintk("requested index = %d\n", index);
3030
3031         input = vino_enum_input(vcs, index);
3032         if (input == VINO_INPUT_NONE)
3033                 return -EINVAL;
3034
3035         memset(i, 0, sizeof(struct v4l2_input));
3036
3037         i->index = index;
3038         i->type = V4L2_INPUT_TYPE_CAMERA;
3039         i->std = vino_inputs[input].std;
3040         strcpy(i->name, vino_inputs[input].name);
3041
3042         if ((input == VINO_INPUT_COMPOSITE)
3043             || (input == VINO_INPUT_SVIDEO)) {
3044                 struct saa7191_status status;
3045                 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3046                 i->status |= status.signal ? 0 : V4L2_IN_ST_NO_SIGNAL;
3047                 i->status |= status.color ? 0 : V4L2_IN_ST_NO_COLOR;
3048         }
3049
3050         return 0;
3051 }
3052
3053 static int vino_v4l2_g_input(struct vino_channel_settings *vcs,
3054                              unsigned int *i)
3055 {
3056         __u32 index;
3057         int input;
3058         unsigned long flags;
3059
3060         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3061         input = vcs->input;
3062         index = vino_find_input_index(vcs);
3063         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3064
3065         dprintk("input = %d\n", input);
3066
3067         if (input == VINO_INPUT_NONE) {
3068                 return -EINVAL;
3069         }
3070
3071         *i = index;
3072
3073         return 0;
3074 }
3075
3076 static int vino_v4l2_s_input(struct vino_channel_settings *vcs,
3077                              unsigned int *i)
3078 {
3079         int input;
3080         dprintk("requested input = %d\n", *i);
3081
3082         input = vino_enum_input(vcs, *i);
3083         if (input == VINO_INPUT_NONE)
3084                 return -EINVAL;
3085
3086         return vino_set_input(vcs, input);
3087 }
3088
3089 static int vino_v4l2_enumstd(struct vino_channel_settings *vcs,
3090                              struct v4l2_standard *s)
3091 {
3092         int index = s->index;
3093         int data_norm;
3094
3095         data_norm = vino_enum_data_norm(vcs, index);
3096         dprintk("standard index = %d\n", index);
3097
3098         if (data_norm == VINO_DATA_NORM_NONE)
3099                 return -EINVAL;
3100
3101         dprintk("standard name = %s\n",
3102                vino_data_norms[data_norm].description);
3103
3104         memset(s, 0, sizeof(struct v4l2_standard));
3105         s->index = index;
3106
3107         s->id = vino_data_norms[data_norm].std;
3108         s->frameperiod.numerator = 1;
3109         s->frameperiod.denominator =
3110                 vino_data_norms[data_norm].fps_max;
3111         s->framelines =
3112                 vino_data_norms[data_norm].framelines;
3113         strcpy(s->name,
3114                vino_data_norms[data_norm].description);
3115
3116         return 0;
3117 }
3118
3119 static int vino_v4l2_querystd(struct vino_channel_settings *vcs,
3120                               v4l2_std_id *std)
3121 {
3122         unsigned long flags;
3123         int err = 0;
3124
3125         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3126
3127         switch (vcs->input) {
3128         case VINO_INPUT_D1:
3129                 *std = vino_inputs[vcs->input].std;
3130                 break;
3131         case VINO_INPUT_COMPOSITE:
3132         case VINO_INPUT_SVIDEO: {
3133                 struct saa7191_status status;
3134
3135                 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3136
3137                 if (status.signal) {
3138                         if (status.signal_60hz) {
3139                                 *std = V4L2_STD_NTSC;
3140                         } else {
3141                                 *std = V4L2_STD_PAL | V4L2_STD_SECAM;
3142                         }
3143                 } else {
3144                         *std = vino_inputs[vcs->input].std;
3145                 }
3146                 break;
3147         }
3148         default:
3149                 err = -EINVAL;
3150         }
3151
3152         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3153
3154         return err;
3155 }
3156
3157 static int vino_v4l2_g_std(struct vino_channel_settings *vcs,
3158                            v4l2_std_id *std)
3159 {
3160         unsigned long flags;
3161
3162         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3163
3164         *std = vino_data_norms[vcs->data_norm].std;
3165         dprintk("current standard = %d\n", vcs->data_norm);
3166
3167         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3168
3169         return 0;
3170 }
3171
3172 static int vino_v4l2_s_std(struct vino_channel_settings *vcs,
3173                            v4l2_std_id *std)
3174 {
3175         unsigned long flags;
3176         int ret = 0;
3177
3178         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3179
3180         if (!vino_is_input_owner(vcs)) {
3181                 ret = -EBUSY;
3182                 goto out;
3183         }
3184
3185         /* check if the standard is valid for the current input */
3186         if ((*std) & vino_inputs[vcs->input].std) {
3187                 dprintk("standard accepted\n");
3188
3189                 /* change the video norm for SAA7191
3190                  * and accept NTSC for D1 (do nothing) */
3191
3192                 if (vcs->input == VINO_INPUT_D1)
3193                         goto out;
3194
3195                 if (((*std) & V4L2_STD_PAL)
3196                     && ((*std) & V4L2_STD_NTSC)
3197                     && ((*std) & V4L2_STD_SECAM)) {
3198                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_AUTO_EXT,
3199                                                  &flags);
3200                 } else if ((*std) & V4L2_STD_PAL) {
3201                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
3202                                                  &flags);
3203                 } else if ((*std) & V4L2_STD_NTSC) {
3204                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
3205                                                  &flags);
3206                 } else if ((*std) & V4L2_STD_SECAM) {
3207                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
3208                                                  &flags);
3209                 } else {
3210                         ret = -EINVAL;
3211                 }
3212
3213                 if (ret) {
3214                         ret = -EINVAL;
3215                 }
3216         } else {
3217                 ret = -EINVAL;
3218         }
3219
3220 out:
3221         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3222
3223         return ret;
3224 }
3225
3226 static int vino_v4l2_enum_fmt(struct vino_channel_settings *vcs,
3227                               struct v4l2_fmtdesc *fd)
3228 {
3229         enum v4l2_buf_type type = fd->type;
3230         int index = fd->index;
3231         dprintk("format index = %d\n", index);
3232
3233         switch (fd->type) {
3234         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3235                 if ((fd->index < 0) ||
3236                     (fd->index >= VINO_DATA_FMT_COUNT))
3237                         return -EINVAL;
3238                 dprintk("format name = %s\n",
3239                        vino_data_formats[index].description);
3240
3241                 memset(fd, 0, sizeof(struct v4l2_fmtdesc));
3242                 fd->index = index;
3243                 fd->type = type;
3244                 fd->pixelformat = vino_data_formats[index].pixelformat;
3245                 strcpy(fd->description, vino_data_formats[index].description);
3246                 break;
3247         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3248         default:
3249                 return -EINVAL;
3250         }
3251
3252         return 0;
3253 }
3254
3255 static int vino_v4l2_try_fmt(struct vino_channel_settings *vcs,
3256                              struct v4l2_format *f)
3257 {
3258         struct vino_channel_settings tempvcs;
3259         unsigned long flags;
3260
3261         switch (f->type) {
3262         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3263                 struct v4l2_pix_format *pf = &f->fmt.pix;
3264
3265                 dprintk("requested: w = %d, h = %d\n",
3266                        pf->width, pf->height);
3267
3268                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3269                 memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
3270                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3271
3272                 tempvcs.data_format = vino_find_data_format(pf->pixelformat);
3273                 if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
3274                         tempvcs.data_format = VINO_DATA_FMT_GREY;
3275                         pf->pixelformat =
3276                                 vino_data_formats[tempvcs.data_format].
3277                                 pixelformat;
3278                 }
3279
3280                 /* data format must be set before clipping/scaling */
3281                 vino_set_scaling(&tempvcs, pf->width, pf->height);
3282
3283                 dprintk("data format = %s\n",
3284                        vino_data_formats[tempvcs.data_format].description);
3285
3286                 pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
3287                         tempvcs.decimation;
3288                 pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3289                         tempvcs.decimation;
3290
3291                 pf->field = V4L2_FIELD_INTERLACED;
3292                 pf->bytesperline = tempvcs.line_size;
3293                 pf->sizeimage = tempvcs.line_size *
3294                         (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3295                         tempvcs.decimation;
3296                 pf->colorspace =
3297                         vino_data_formats[tempvcs.data_format].colorspace;
3298
3299                 pf->priv = 0;
3300                 break;
3301         }
3302         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3303         default:
3304                 return -EINVAL;
3305         }
3306
3307         return 0;
3308 }
3309
3310 static int vino_v4l2_g_fmt(struct vino_channel_settings *vcs,
3311                            struct v4l2_format *f)
3312 {
3313         unsigned long flags;
3314
3315         switch (f->type) {
3316         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3317                 struct v4l2_pix_format *pf = &f->fmt.pix;
3318
3319                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3320
3321                 pf->width = (vcs->clipping.right - vcs->clipping.left) /
3322                         vcs->decimation;
3323                 pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
3324                         vcs->decimation;
3325                 pf->pixelformat =
3326                         vino_data_formats[vcs->data_format].pixelformat;
3327
3328                 pf->field = V4L2_FIELD_INTERLACED;
3329                 pf->bytesperline = vcs->line_size;
3330                 pf->sizeimage = vcs->line_size *
3331                         (vcs->clipping.bottom - vcs->clipping.top) /
3332                         vcs->decimation;
3333                 pf->colorspace =
3334                         vino_data_formats[vcs->data_format].colorspace;
3335
3336                 pf->priv = 0;
3337
3338                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3339                 break;
3340         }
3341         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3342         default:
3343                 return -EINVAL;
3344         }
3345
3346         return 0;
3347 }
3348
3349 static int vino_v4l2_s_fmt(struct vino_channel_settings *vcs,
3350                            struct v4l2_format *f)
3351 {
3352         int data_format;
3353         unsigned long flags;
3354
3355         switch (f->type) {
3356         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3357                 struct v4l2_pix_format *pf = &f->fmt.pix;
3358
3359                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3360
3361                 data_format = vino_find_data_format(pf->pixelformat);
3362
3363                 if (data_format == VINO_DATA_FMT_NONE) {
3364                         vcs->data_format = VINO_DATA_FMT_GREY;
3365                         pf->pixelformat =
3366                                 vino_data_formats[vcs->data_format].
3367                                 pixelformat;
3368                 } else {
3369                         vcs->data_format = data_format;
3370                 }
3371
3372                 /* data format must be set before clipping/scaling */
3373                 vino_set_scaling(vcs, pf->width, pf->height);
3374
3375                 dprintk("data format = %s\n",
3376                        vino_data_formats[vcs->data_format].description);
3377
3378                 pf->width = vcs->clipping.right - vcs->clipping.left;
3379                 pf->height = vcs->clipping.bottom - vcs->clipping.top;
3380
3381                 pf->field = V4L2_FIELD_INTERLACED;
3382                 pf->bytesperline = vcs->line_size;
3383                 pf->sizeimage = vcs->line_size *
3384                         (vcs->clipping.bottom - vcs->clipping.top) /
3385                         vcs->decimation;
3386                 pf->colorspace =
3387                         vino_data_formats[vcs->data_format].colorspace;
3388
3389                 pf->priv = 0;
3390
3391                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3392                 break;
3393         }
3394         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3395         default:
3396                 return -EINVAL;
3397         }
3398
3399         return 0;
3400 }
3401
3402 static int vino_v4l2_cropcap(struct vino_channel_settings *vcs,
3403                              struct v4l2_cropcap *ccap)
3404 {
3405         const struct vino_data_norm *norm;
3406         unsigned long flags;
3407
3408         switch (ccap->type) {
3409         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3410                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3411
3412                 norm = &vino_data_norms[vcs->data_norm];
3413
3414                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3415
3416                 ccap->bounds.left = 0;
3417                 ccap->bounds.top = 0;
3418                 ccap->bounds.width = norm->width;
3419                 ccap->bounds.height = norm->height;
3420                 memcpy(&ccap->defrect, &ccap->bounds,
3421                        sizeof(struct v4l2_rect));
3422
3423                 ccap->pixelaspect.numerator = 1;
3424                 ccap->pixelaspect.denominator = 1;
3425                 break;
3426         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3427         default:
3428                 return -EINVAL;
3429         }
3430
3431         return 0;
3432 }
3433
3434 static int vino_v4l2_g_crop(struct vino_channel_settings *vcs,
3435                             struct v4l2_crop *c)
3436 {
3437         unsigned long flags;
3438
3439         switch (c->type) {
3440         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3441                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3442
3443                 c->c.left = vcs->clipping.left;
3444                 c->c.top = vcs->clipping.top;
3445                 c->c.width = vcs->clipping.right - vcs->clipping.left;
3446                 c->c.height = vcs->clipping.bottom - vcs->clipping.top;
3447
3448                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3449                 break;
3450         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3451         default:
3452                 return -EINVAL;
3453         }
3454
3455         return 0;
3456 }
3457
3458 static int vino_v4l2_s_crop(struct vino_channel_settings *vcs,
3459                             struct v4l2_crop *c)
3460 {
3461         unsigned long flags;
3462
3463         switch (c->type) {
3464         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3465                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3466
3467                 vino_set_clipping(vcs, c->c.left, c->c.top,
3468                                   c->c.width, c->c.height);
3469
3470                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3471                 break;
3472         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3473         default:
3474                 return -EINVAL;
3475         }
3476
3477         return 0;
3478 }
3479
3480 static int vino_v4l2_g_parm(struct vino_channel_settings *vcs,
3481                             struct v4l2_streamparm *sp)
3482 {
3483         unsigned long flags;
3484
3485         switch (sp->type) {
3486         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3487                 struct v4l2_captureparm *cp = &sp->parm.capture;
3488                 memset(cp, 0, sizeof(struct v4l2_captureparm));
3489
3490                 cp->capability = V4L2_CAP_TIMEPERFRAME;
3491                 cp->timeperframe.numerator = 1;
3492
3493                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3494
3495                 cp->timeperframe.denominator = vcs->fps;
3496
3497                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3498
3499                 // TODO: cp->readbuffers = xxx;
3500                 break;
3501         }
3502         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3503         default:
3504                 return -EINVAL;
3505         }
3506
3507         return 0;
3508 }
3509
3510 static int vino_v4l2_s_parm(struct vino_channel_settings *vcs,
3511                             struct v4l2_streamparm *sp)
3512 {
3513         unsigned long flags;
3514
3515         switch (sp->type) {
3516         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3517                 struct v4l2_captureparm *cp = &sp->parm.capture;
3518
3519                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3520
3521                 if ((cp->timeperframe.numerator == 0) ||
3522                     (cp->timeperframe.denominator == 0)) {
3523                         /* reset framerate */
3524                         vino_set_default_framerate(vcs);
3525                 } else {
3526                         vino_set_framerate(vcs, cp->timeperframe.denominator /
3527                                            cp->timeperframe.numerator);
3528                 }
3529
3530                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3531
3532                 // TODO: set buffers according to cp->readbuffers
3533                 break;
3534         }
3535         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3536         default:
3537                 return -EINVAL;
3538         }
3539
3540         return 0;
3541 }
3542
3543 static int vino_v4l2_reqbufs(struct vino_channel_settings *vcs,
3544                              struct v4l2_requestbuffers *rb)
3545 {
3546         if (vcs->reading)
3547                 return -EBUSY;
3548
3549         switch (rb->type) {
3550         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3551                 // TODO: check queue type
3552                 if (rb->memory != V4L2_MEMORY_MMAP) {
3553                         dprintk("type not mmap\n");
3554                         return -EINVAL;
3555                 }
3556
3557                 dprintk("count = %d\n", rb->count);
3558                 if (rb->count > 0) {
3559                         if (vino_is_capturing(vcs)) {
3560                                 dprintk("busy, capturing\n");
3561                                 return -EBUSY;
3562                         }
3563
3564                         if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
3565                                 dprintk("busy, buffers still mapped\n");
3566                                 return -EBUSY;
3567                         } else {
3568                                 vcs->streaming = 0;
3569                                 vino_queue_free(&vcs->fb_queue);
3570                                 vino_queue_init(&vcs->fb_queue, &rb->count);
3571                         }
3572                 } else {
3573                         vcs->streaming = 0;
3574                         vino_capture_stop(vcs);
3575                         vino_queue_free(&vcs->fb_queue);
3576                 }
3577                 break;
3578         }
3579         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3580         default:
3581                 return -EINVAL;
3582         }
3583
3584         return 0;
3585 }
3586
3587 static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
3588                                         struct vino_framebuffer *fb,
3589                                         struct v4l2_buffer *b)
3590 {
3591         if (vino_queue_outgoing_contains(&vcs->fb_queue,
3592                                          fb->id)) {
3593                 b->flags &= ~V4L2_BUF_FLAG_QUEUED;
3594                 b->flags |= V4L2_BUF_FLAG_DONE;
3595         } else if (vino_queue_incoming_contains(&vcs->fb_queue,
3596                                        fb->id)) {
3597                 b->flags &= ~V4L2_BUF_FLAG_DONE;
3598                 b->flags |= V4L2_BUF_FLAG_QUEUED;
3599         } else {
3600                 b->flags &= ~(V4L2_BUF_FLAG_DONE |
3601                               V4L2_BUF_FLAG_QUEUED);
3602         }
3603
3604         b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
3605
3606         if (fb->map_count > 0)
3607                 b->flags |= V4L2_BUF_FLAG_MAPPED;
3608
3609         b->index = fb->id;
3610         b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
3611                 V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
3612         b->m.offset = fb->offset;
3613         b->bytesused = fb->data_size;
3614         b->length = fb->size;
3615         b->field = V4L2_FIELD_INTERLACED;
3616         b->sequence = fb->frame_counter;
3617         memcpy(&b->timestamp, &fb->timestamp,
3618                sizeof(struct timeval));
3619         // b->input ?
3620
3621         dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
3622                 fb->id, fb->size, fb->data_size, fb->offset);
3623 }
3624
3625 static int vino_v4l2_querybuf(struct vino_channel_settings *vcs,
3626                               struct v4l2_buffer *b)
3627 {
3628         if (vcs->reading)
3629                 return -EBUSY;
3630
3631         switch (b->type) {
3632         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3633                 struct vino_framebuffer *fb;
3634
3635                 // TODO: check queue type
3636                 if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
3637                         dprintk("invalid index = %d\n",
3638                                b->index);
3639                         return -EINVAL;
3640                 }
3641
3642                 fb = vino_queue_get_buffer(&vcs->fb_queue,
3643                                            b->index);
3644                 if (fb == NULL) {
3645                         dprintk("vino_queue_get_buffer() failed");
3646                         return -EINVAL;
3647                 }
3648
3649                 vino_v4l2_get_buffer_status(vcs, fb, b);
3650                 break;
3651         }
3652         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3653         default:
3654                 return -EINVAL;
3655         }
3656
3657         return 0;
3658 }
3659
3660 static int vino_v4l2_qbuf(struct vino_channel_settings *vcs,
3661                           struct v4l2_buffer *b)
3662 {
3663         if (vcs->reading)
3664                 return -EBUSY;
3665
3666         switch (b->type) {
3667         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3668                 struct vino_framebuffer *fb;
3669                 int ret;
3670
3671                 // TODO: check queue type
3672                 if (b->memory != V4L2_MEMORY_MMAP) {
3673                         dprintk("type not mmap\n");
3674                         return -EINVAL;
3675                 }
3676
3677                 fb = vino_capture_enqueue(vcs, b->index);
3678                 if (fb == NULL)
3679                         return -EINVAL;
3680
3681                 vino_v4l2_get_buffer_status(vcs, fb, b);
3682
3683                 if (vcs->streaming) {
3684                         ret = vino_capture_next(vcs, 1);
3685                         if (ret)
3686                                 return ret;
3687                 }
3688                 break;
3689         }
3690         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3691         default:
3692                 return -EINVAL;
3693         }
3694
3695         return 0;
3696 }
3697
3698 static int vino_v4l2_dqbuf(struct vino_channel_settings *vcs,
3699                            struct v4l2_buffer *b,
3700                            unsigned int nonblocking)
3701 {
3702         if (vcs->reading)
3703                 return -EBUSY;
3704
3705         switch (b->type) {
3706         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3707                 struct vino_framebuffer *fb;
3708                 unsigned int incoming, outgoing;
3709                 int err;
3710
3711                 // TODO: check queue type
3712
3713                 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3714                 if (err) {
3715                         dprintk("vino_queue_get_incoming() failed\n");
3716                         return -EINVAL;
3717                 }
3718                 err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
3719                 if (err) {
3720                         dprintk("vino_queue_get_outgoing() failed\n");
3721                         return -EINVAL;
3722                 }
3723
3724                 dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
3725
3726                 if (outgoing == 0) {
3727                         if (incoming == 0) {
3728                                 dprintk("no incoming or outgoing buffers\n");
3729                                 return -EINVAL;
3730                         }
3731                         if (nonblocking) {
3732                                 dprintk("non-blocking I/O was selected and "
3733                                         "there are no buffers to dequeue\n");
3734                                 return -EAGAIN;
3735                         }
3736
3737                         err = vino_wait_for_frame(vcs);
3738                         if (err) {
3739                                 err = vino_wait_for_frame(vcs);
3740                                 if (err) {
3741                                         /* interrupted or
3742                                          * no frames captured because
3743                                          * of frame skipping */
3744                                         // vino_capture_failed(vcs);
3745                                         return -EIO;
3746                                 }
3747                         }
3748                 }
3749
3750                 fb = vino_queue_remove(&vcs->fb_queue, &b->index);
3751                 if (fb == NULL) {
3752                         dprintk("vino_queue_remove() failed\n");
3753                         return -EINVAL;
3754                 }
3755
3756                 err = vino_check_buffer(vcs, fb);
3757
3758                 vino_v4l2_get_buffer_status(vcs, fb, b);
3759
3760                 if (err)
3761                         return -EIO;
3762
3763                 break;
3764         }
3765         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3766         default:
3767                 return -EINVAL;
3768         }
3769
3770         return 0;
3771 }
3772
3773 static int vino_v4l2_streamon(struct vino_channel_settings *vcs)
3774 {
3775         unsigned int incoming;
3776         int ret;
3777         if (vcs->reading)
3778                 return -EBUSY;
3779
3780         if (vcs->streaming)
3781                 return 0;
3782
3783         // TODO: check queue type
3784
3785         if (vino_queue_get_length(&vcs->fb_queue) < 1) {
3786                 dprintk("no buffers allocated\n");
3787                 return -EINVAL;
3788         }
3789
3790         ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3791         if (ret) {
3792                 dprintk("vino_queue_get_incoming() failed\n");
3793                 return -EINVAL;
3794         }
3795
3796         vcs->streaming = 1;
3797
3798         if (incoming > 0) {
3799                 ret = vino_capture_next(vcs, 1);
3800                 if (ret) {
3801                         vcs->streaming = 0;
3802
3803                         dprintk("couldn't start capture\n");
3804                         return -EINVAL;
3805                 }
3806         }
3807
3808         return 0;
3809 }
3810
3811 static int vino_v4l2_streamoff(struct vino_channel_settings *vcs)
3812 {
3813         if (vcs->reading)
3814                 return -EBUSY;
3815
3816         if (!vcs->streaming)
3817                 return 0;
3818
3819         vcs->streaming = 0;
3820         vino_capture_stop(vcs);
3821
3822         return 0;
3823 }
3824
3825 static int vino_v4l2_queryctrl(struct vino_channel_settings *vcs,
3826                                struct v4l2_queryctrl *queryctrl)
3827 {
3828         unsigned long flags;
3829         int i;
3830         int err = 0;
3831
3832         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3833
3834         switch (vcs->input) {
3835         case VINO_INPUT_D1:
3836                 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3837                         if (vino_indycam_v4l2_controls[i].id ==
3838                             queryctrl->id) {
3839                                 memcpy(queryctrl,
3840                                        &vino_indycam_v4l2_controls[i],
3841                                        sizeof(struct v4l2_queryctrl));
3842                                 queryctrl->reserved[0] = 0;
3843                                 goto found;
3844                         }
3845                 }
3846
3847                 err =  -EINVAL;
3848                 break;
3849         case VINO_INPUT_COMPOSITE:
3850         case VINO_INPUT_SVIDEO:
3851                 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3852                         if (vino_saa7191_v4l2_controls[i].id ==
3853                             queryctrl->id) {
3854                                 memcpy(queryctrl,
3855                                        &vino_saa7191_v4l2_controls[i],
3856                                        sizeof(struct v4l2_queryctrl));
3857                                 queryctrl->reserved[0] = 0;
3858                                 goto found;
3859                         }
3860                 }
3861
3862                 err =  -EINVAL;
3863                 break;
3864         default:
3865                 err =  -EINVAL;
3866         }
3867
3868  found:
3869         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3870
3871         return err;
3872 }
3873
3874 static int vino_v4l2_g_ctrl(struct vino_channel_settings *vcs,
3875                             struct v4l2_control *control)
3876 {
3877         unsigned long flags;
3878         int i;
3879         int err = 0;
3880
3881         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3882
3883         switch (vcs->input) {
3884         case VINO_INPUT_D1: {
3885                 struct indycam_control indycam_ctrl;
3886
3887                 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3888                         if (vino_indycam_v4l2_controls[i].id ==
3889                             control->id) {
3890                                 goto found1;
3891                         }
3892                 }
3893
3894                 err = -EINVAL;
3895                 goto out;
3896
3897 found1:
3898                 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3899
3900                 err = i2c_camera_command(DECODER_INDYCAM_GET_CONTROL,
3901                                          &indycam_ctrl);
3902                 if (err) {
3903                         err = -EINVAL;
3904                         goto out;
3905                 }
3906
3907                 control->value = indycam_ctrl.value;
3908                 break;
3909         }
3910         case VINO_INPUT_COMPOSITE:
3911         case VINO_INPUT_SVIDEO: {
3912                 struct saa7191_control saa7191_ctrl;
3913
3914                 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3915                         if (vino_saa7191_v4l2_controls[i].id ==
3916                             control->id) {
3917                                 goto found2;
3918                         }
3919                 }
3920
3921                 err = -EINVAL;
3922                 goto out;
3923
3924 found2:
3925                 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
3926
3927                 err = i2c_decoder_command(DECODER_SAA7191_GET_CONTROL,
3928                                           &saa7191_ctrl);
3929                 if (err) {
3930                         err = -EINVAL;
3931                         goto out;
3932                 }
3933
3934                 control->value = saa7191_ctrl.value;
3935                 break;
3936         }
3937         default:
3938                 err =  -EINVAL;
3939         }
3940
3941 out:
3942         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3943
3944         return err;
3945 }
3946
3947 static int vino_v4l2_s_ctrl(struct vino_channel_settings *vcs,
3948                             struct v4l2_control *control)
3949 {
3950         unsigned long flags;
3951         int i;
3952         int err = 0;
3953
3954         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3955
3956         if (!vino_is_input_owner(vcs)) {
3957                 err = -EBUSY;
3958                 goto out;
3959         }
3960
3961         switch (vcs->input) {
3962         case VINO_INPUT_D1: {
3963                 struct indycam_control indycam_ctrl;
3964
3965                 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3966                         if (vino_indycam_v4l2_controls[i].id ==
3967                             control->id) {
3968                                 if ((control->value >=
3969                                      vino_indycam_v4l2_controls[i].minimum)
3970                                     && (control->value <=
3971                                         vino_indycam_v4l2_controls[i].
3972                                         maximum)) {
3973                                         goto found1;
3974                                 } else {
3975                                         err = -ERANGE;
3976                                         goto out;
3977                                 }
3978                         }
3979                 }
3980
3981                 err = -EINVAL;
3982                 goto out;
3983
3984 found1:
3985                 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3986                 indycam_ctrl.value = control->value;
3987
3988                 err = i2c_camera_command(DECODER_INDYCAM_SET_CONTROL,
3989                                          &indycam_ctrl);
3990                 if (err)
3991                         err = -EINVAL;
3992                 break;
3993         }
3994         case VINO_INPUT_COMPOSITE:
3995         case VINO_INPUT_SVIDEO: {
3996                 struct saa7191_control saa7191_ctrl;
3997
3998                 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3999                         if (vino_saa7191_v4l2_controls[i].id ==
4000                             control->id) {
4001                                 if ((control->value >=
4002                                      vino_saa7191_v4l2_controls[i].minimum)
4003                                     && (control->value <=
4004                                         vino_saa7191_v4l2_controls[i].
4005                                         maximum)) {
4006                                         goto found2;
4007                                 } else {
4008                                         err = -ERANGE;
4009                                         goto out;
4010                                 }
4011                         }
4012                 }
4013                 err = -EINVAL;
4014                 goto out;
4015
4016 found2:
4017                 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
4018                 saa7191_ctrl.value = control->value;
4019
4020                 err = i2c_decoder_command(DECODER_SAA7191_SET_CONTROL,
4021                                           &saa7191_ctrl);
4022                 if (err)
4023                         err = -EINVAL;
4024                 break;
4025         }
4026         default:
4027                 err =  -EINVAL;
4028         }
4029
4030 out:
4031         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
4032
4033         return err;
4034 }
4035
4036 /* File operations */
4037
4038 static int vino_open(struct inode *inode, struct file *file)
4039 {
4040         struct video_device *dev = video_devdata(file);
4041         struct vino_channel_settings *vcs = video_get_drvdata(dev);
4042         int ret = 0;
4043         dprintk("open(): channel = %c\n",
4044                (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
4045
4046         mutex_lock(&vcs->mutex);
4047
4048         if (vcs->users) {
4049                 dprintk("open(): driver busy\n");
4050                 ret = -EBUSY;
4051                 goto out;
4052         }
4053
4054         ret = vino_acquire_input(vcs);
4055         if (ret) {
4056                 dprintk("open(): vino_acquire_input() failed\n");
4057                 goto out;
4058         }
4059
4060         vcs->users++;
4061
4062  out:
4063         mutex_unlock(&vcs->mutex);
4064
4065         dprintk("open(): %s!\n", ret ? "failed" : "complete");
4066
4067         return ret;
4068 }
4069
4070 static int vino_close(struct inode *inode, struct file *file)
4071 {
4072         struct video_device *dev = video_devdata(file);
4073         struct vino_channel_settings *vcs = video_get_drvdata(dev);
4074         dprintk("close():\n");
4075
4076         mutex_lock(&vcs->mutex);
4077
4078         vcs->users--;
4079
4080         if (!vcs->users) {
4081                 vino_release_input(vcs);
4082
4083                 /* stop DMA and free buffers */
4084                 vino_capture_stop(vcs);
4085                 vino_queue_free(&vcs->fb_queue);
4086         }
4087
4088         mutex_unlock(&vcs->mutex);
4089
4090         return 0;
4091 }
4092
4093 static void vino_vm_open(struct vm_area_struct *vma)
4094 {
4095         struct vino_framebuffer *fb = vma->vm_private_data;
4096
4097         fb->map_count++;
4098         dprintk("vino_vm_open(): count = %d\n", fb->map_count);
4099 }
4100
4101 static void vino_vm_close(struct vm_area_struct *vma)
4102 {
4103         struct vino_framebuffer *fb = vma->vm_private_data;
4104
4105         fb->map_count--;
4106         dprintk("vino_vm_close(): count = %d\n", fb->map_count);
4107 }
4108
4109 static struct vm_operations_struct vino_vm_ops = {
4110         .open   = vino_vm_open,
4111         .close  = vino_vm_close,
4112 };
4113
4114 static int vino_mmap(struct file *file, struct vm_area_struct *vma)
4115 {
4116         struct video_device *dev = video_devdata(file);
4117         struct vino_channel_settings *vcs = video_get_drvdata(dev);
4118
4119         unsigned long start = vma->vm_start;
4120         unsigned long size = vma->vm_end - vma->vm_start;
4121         unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
4122
4123         struct vino_framebuffer *fb = NULL;
4124         unsigned int i, length;
4125         int ret = 0;
4126
4127         dprintk("mmap():\n");
4128
4129         // TODO: reject mmap if already mapped
4130
4131         if (mutex_lock_interruptible(&vcs->mutex))
4132                 return -EINTR;
4133
4134         if (vcs->reading) {
4135                 ret = -EBUSY;
4136                 goto out;
4137         }
4138
4139         // TODO: check queue type
4140
4141         if (!(vma->vm_flags & VM_WRITE)) {
4142                 dprintk("mmap(): app bug: PROT_WRITE please\n");
4143                 ret = -EINVAL;
4144                 goto out;
4145         }
4146         if (!(vma->vm_flags & VM_SHARED)) {
4147                 dprintk("mmap(): app bug: MAP_SHARED please\n");
4148                 ret = -EINVAL;
4149                 goto out;
4150         }
4151
4152         /* find the correct buffer using offset */
4153         length = vino_queue_get_length(&vcs->fb_queue);
4154         if (length == 0) {
4155                 dprintk("mmap(): queue not initialized\n");
4156                 ret = -EINVAL;
4157                 goto out;
4158         }
4159
4160         for (i = 0; i < length; i++) {
4161                 fb = vino_queue_get_buffer(&vcs->fb_queue, i);
4162                 if (fb == NULL) {
4163                         dprintk("mmap(): vino_queue_get_buffer() failed\n");
4164                         ret = -EINVAL;
4165                         goto out;
4166                 }
4167
4168                 if (fb->offset == offset)
4169                         goto found;
4170         }
4171
4172         dprintk("mmap(): invalid offset = %lu\n", offset);
4173         ret = -EINVAL;
4174         goto out;
4175
4176 found:
4177         dprintk("mmap(): buffer = %d\n", i);
4178
4179         if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
4180                 dprintk("mmap(): failed: size = %lu > %lu\n",
4181                         size, fb->desc_table.page_count * PAGE_SIZE);
4182                 ret = -EINVAL;
4183                 goto out;
4184         }
4185
4186         for (i = 0; i < fb->desc_table.page_count; i++) {
4187                 unsigned long pfn =
4188                         virt_to_phys((void *)fb->desc_table.virtual[i]) >>
4189                         PAGE_SHIFT;
4190
4191                 if (size < PAGE_SIZE)
4192                         break;
4193
4194                 // protection was: PAGE_READONLY
4195                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
4196                                     vma->vm_page_prot)) {
4197                         dprintk("mmap(): remap_pfn_range() failed\n");
4198                         ret = -EAGAIN;
4199                         goto out;
4200                 }
4201
4202                 start += PAGE_SIZE;
4203                 size -= PAGE_SIZE;
4204         }
4205
4206         fb->map_count = 1;
4207
4208         vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
4209         vma->vm_flags &= ~VM_IO;
4210         vma->vm_private_data = fb;
4211         vma->vm_file = file;
4212         vma->vm_ops = &vino_vm_ops;
4213
4214 out:
4215         mutex_unlock(&vcs->mutex);
4216
4217         return ret;
4218 }
4219
4220 static unsigned int vino_poll(struct file *file, poll_table *pt)
4221 {
4222         struct video_device *dev = video_devdata(file);
4223         struct vino_channel_settings *vcs = video_get_drvdata(dev);
4224         unsigned int outgoing;
4225         unsigned int ret = 0;
4226
4227         // lock mutex (?)
4228         // TODO: this has to be corrected for different read modes
4229
4230         dprintk("poll():\n");
4231
4232         if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4233                 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4234                 ret = POLLERR;
4235                 goto error;
4236         }
4237         if (outgoing > 0)
4238                 goto over;
4239
4240         poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
4241
4242         if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4243                 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4244                 ret = POLLERR;
4245                 goto error;
4246         }
4247
4248 over:
4249         dprintk("poll(): data %savailable\n",
4250                 (outgoing > 0) ? "" : "not ");
4251
4252         if (outgoing > 0)
4253                 ret = POLLIN | POLLRDNORM;
4254
4255 error:
4256
4257         return ret;
4258 }
4259
4260 static int vino_do_ioctl(struct inode *inode, struct file *file,
4261                       unsigned int cmd, void *arg)
4262 {
4263         struct video_device *dev = video_devdata(file);
4264         struct vino_channel_settings *vcs = video_get_drvdata(dev);
4265
4266 #ifdef VINO_DEBUG
4267         switch (_IOC_TYPE(cmd)) {
4268         case 'v':
4269                 dprintk("ioctl(): V4L1 unsupported (0x%08x)\n", cmd);
4270                 break;
4271         case 'V':
4272                 dprintk("ioctl(): V4L2 %s (0x%08x)\n",
4273                         v4l2_ioctl_names[_IOC_NR(cmd)], cmd);
4274                 break;
4275         default:
4276                 dprintk("ioctl(): unsupported command 0x%08x\n", cmd);
4277         }
4278 #endif
4279
4280         switch (cmd) {
4281         /* V4L2 interface */
4282         case VIDIOC_QUERYCAP: {
4283                 vino_v4l2_querycap(arg);
4284                 break;
4285         }
4286         case VIDIOC_ENUMINPUT: {
4287                 return vino_v4l2_enuminput(vcs, arg);
4288         }
4289         case VIDIOC_G_INPUT: {
4290                 return vino_v4l2_g_input(vcs, arg);
4291         }
4292         case VIDIOC_S_INPUT: {
4293                 return vino_v4l2_s_input(vcs, arg);
4294         }
4295         case VIDIOC_ENUMSTD: {
4296                 return vino_v4l2_enumstd(vcs, arg);
4297         }
4298         case VIDIOC_QUERYSTD: {
4299                 return vino_v4l2_querystd(vcs, arg);
4300         }
4301         case VIDIOC_G_STD: {
4302                 return vino_v4l2_g_std(vcs, arg);
4303         }
4304         case VIDIOC_S_STD: {
4305                 return vino_v4l2_s_std(vcs, arg);
4306         }
4307         case VIDIOC_ENUM_FMT: {
4308                 return vino_v4l2_enum_fmt(vcs, arg);
4309         }
4310         case VIDIOC_TRY_FMT: {
4311                 return vino_v4l2_try_fmt(vcs, arg);
4312         }
4313         case VIDIOC_G_FMT: {
4314                 return vino_v4l2_g_fmt(vcs, arg);
4315         }
4316         case VIDIOC_S_FMT: {
4317                 return vino_v4l2_s_fmt(vcs, arg);
4318         }
4319         case VIDIOC_CROPCAP: {
4320                 return vino_v4l2_cropcap(vcs, arg);
4321         }
4322         case VIDIOC_G_CROP: {
4323                 return vino_v4l2_g_crop(vcs, arg);
4324         }
4325         case VIDIOC_S_CROP: {
4326                 return vino_v4l2_s_crop(vcs, arg);
4327         }
4328         case VIDIOC_G_PARM: {
4329                 return vino_v4l2_g_parm(vcs, arg);
4330         }
4331         case VIDIOC_S_PARM: {
4332                 return vino_v4l2_s_parm(vcs, arg);
4333         }
4334         case VIDIOC_REQBUFS: {
4335                 return vino_v4l2_reqbufs(vcs, arg);
4336         }
4337         case VIDIOC_QUERYBUF: {
4338                 return vino_v4l2_querybuf(vcs, arg);
4339         }
4340         case VIDIOC_QBUF: {
4341                 return vino_v4l2_qbuf(vcs, arg);
4342         }
4343         case VIDIOC_DQBUF: {
4344                 return vino_v4l2_dqbuf(vcs, arg, file->f_flags & O_NONBLOCK);
4345         }
4346         case VIDIOC_STREAMON: {
4347                 return vino_v4l2_streamon(vcs);
4348         }
4349         case VIDIOC_STREAMOFF: {
4350                 return vino_v4l2_streamoff(vcs);
4351         }
4352         case VIDIOC_QUERYCTRL: {
4353                 return vino_v4l2_queryctrl(vcs, arg);
4354         }
4355         case VIDIOC_G_CTRL: {
4356                 return vino_v4l2_g_ctrl(vcs, arg);
4357         }
4358         case VIDIOC_S_CTRL: {
4359                 return vino_v4l2_s_ctrl(vcs, arg);
4360         }
4361         default:
4362                 return -ENOIOCTLCMD;
4363         }
4364
4365         return 0;
4366 }
4367
4368 static int vino_ioctl(struct inode *inode, struct file *file,
4369                       unsigned int cmd, unsigned long arg)
4370 {
4371         struct video_device *dev = video_devdata(file);
4372         struct vino_channel_settings *vcs = video_get_drvdata(dev);
4373         int ret;
4374
4375         if (mutex_lock_interruptible(&vcs->mutex))
4376                 return -EINTR;
4377
4378         ret = video_usercopy(inode, file, cmd, arg, vino_do_ioctl);
4379
4380         mutex_unlock(&vcs->mutex);
4381
4382         return ret;
4383 }
4384
4385 /* Initialization and cleanup */
4386
4387 // __initdata
4388 static int vino_init_stage = 0;
4389
4390 static const struct file_operations vino_fops = {
4391         .owner          = THIS_MODULE,
4392         .open           = vino_open,
4393         .release        = vino_close,
4394         .ioctl          = vino_ioctl,
4395         .mmap           = vino_mmap,
4396         .poll           = vino_poll,
4397         .llseek         = no_llseek,
4398 };
4399
4400 static struct video_device v4l_device_template = {
4401         .name           = "NOT SET",
4402         //.type         = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE |
4403         //      VID_TYPE_CLIPPING | VID_TYPE_SCALES, VID_TYPE_OVERLAY
4404         .fops           = &vino_fops,
4405         .minor          = -1,
4406 };
4407
4408 static void vino_module_cleanup(int stage)
4409 {
4410         switch(stage) {
4411         case 10:
4412                 video_unregister_device(vino_drvdata->b.v4l_device);
4413                 vino_drvdata->b.v4l_device = NULL;
4414         case 9:
4415                 video_unregister_device(vino_drvdata->a.v4l_device);
4416                 vino_drvdata->a.v4l_device = NULL;
4417         case 8:
4418                 vino_i2c_del_bus();
4419         case 7:
4420                 free_irq(SGI_VINO_IRQ, NULL);
4421         case 6:
4422                 if (vino_drvdata->b.v4l_device) {
4423                         video_device_release(vino_drvdata->b.v4l_device);
4424                         vino_drvdata->b.v4l_device = NULL;
4425                 }
4426         case 5:
4427                 if (vino_drvdata->a.v4l_device) {
4428                         video_device_release(vino_drvdata->a.v4l_device);
4429                         vino_drvdata->a.v4l_device = NULL;
4430                 }
4431         case 4:
4432                 /* all entries in dma_cpu dummy table have the same address */
4433                 dma_unmap_single(NULL,
4434                                  vino_drvdata->dummy_desc_table.dma_cpu[0],
4435                                  PAGE_SIZE, DMA_FROM_DEVICE);
4436                 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4437                                   * sizeof(dma_addr_t),
4438                                   (void *)vino_drvdata->
4439                                   dummy_desc_table.dma_cpu,
4440                                   vino_drvdata->dummy_desc_table.dma);
4441         case 3:
4442                 free_page(vino_drvdata->dummy_page);
4443         case 2:
4444                 kfree(vino_drvdata);
4445         case 1:
4446                 iounmap(vino);
4447         case 0:
4448                 break;
4449         default:
4450                 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4451                         stage);
4452         }
4453 }
4454
4455 static int vino_probe(void)
4456 {
4457         unsigned long rev_id;
4458
4459         if (ip22_is_fullhouse()) {
4460                 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4461                 return -ENODEV;
4462         }
4463
4464         if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4465                 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4466                 return -ENODEV;
4467         }
4468
4469         vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4470         if (!vino) {
4471                 printk(KERN_ERR "VINO: ioremap() failed\n");
4472                 return -EIO;
4473         }
4474         vino_init_stage++;
4475
4476         if (get_dbe(rev_id, &(vino->rev_id))) {
4477                 printk(KERN_ERR "Failed to read VINO revision register\n");
4478                 vino_module_cleanup(vino_init_stage);
4479                 return -ENODEV;
4480         }
4481
4482         if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4483                 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4484                        rev_id);
4485                 vino_module_cleanup(vino_init_stage);
4486                 return -ENODEV;
4487         }
4488
4489         printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4490
4491         return 0;
4492 }
4493
4494 static int vino_init(void)
4495 {
4496         dma_addr_t dma_dummy_address;
4497         int i;
4498
4499         vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
4500         if (!vino_drvdata) {
4501                 vino_module_cleanup(vino_init_stage);
4502                 return -ENOMEM;
4503         }
4504         vino_init_stage++;
4505
4506         /* create a dummy dma descriptor */
4507         vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4508         if (!vino_drvdata->dummy_page) {
4509                 vino_module_cleanup(vino_init_stage);
4510                 return -ENOMEM;
4511         }
4512         vino_init_stage++;
4513
4514         // TODO: use page_count in dummy_desc_table
4515
4516         vino_drvdata->dummy_desc_table.dma_cpu =
4517                 dma_alloc_coherent(NULL,
4518                 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4519                 &vino_drvdata->dummy_desc_table.dma,
4520                 GFP_KERNEL | GFP_DMA);
4521         if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4522                 vino_module_cleanup(vino_init_stage);
4523                 return -ENOMEM;
4524         }
4525         vino_init_stage++;
4526
4527         dma_dummy_address = dma_map_single(NULL,
4528                                            (void *)vino_drvdata->dummy_page,
4529                                         PAGE_SIZE, DMA_FROM_DEVICE);
4530         for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4531                 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4532         }
4533
4534         /* initialize VINO */
4535
4536         vino->control = 0;
4537         vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4538         vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4539         udelay(VINO_DESC_FETCH_DELAY);
4540
4541         vino->intr_status = 0;
4542
4543         vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4544         vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4545
4546         return 0;
4547 }
4548
4549 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4550                                  unsigned int channel, const char *name)
4551 {
4552         vcs->channel = channel;
4553         vcs->input = VINO_INPUT_NONE;
4554         vcs->alpha = 0;
4555         vcs->users = 0;
4556         vcs->data_format = VINO_DATA_FMT_GREY;
4557         vcs->data_norm = VINO_DATA_NORM_NTSC;
4558         vcs->decimation = 1;
4559         vino_set_default_clipping(vcs);
4560         vino_set_default_framerate(vcs);
4561
4562         vcs->capturing = 0;
4563
4564         mutex_init(&vcs->mutex);
4565         spin_lock_init(&vcs->capture_lock);
4566
4567         mutex_init(&vcs->fb_queue.queue_mutex);
4568         spin_lock_init(&vcs->fb_queue.queue_lock);
4569         init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4570
4571         vcs->v4l_device = video_device_alloc();
4572         if (!vcs->v4l_device) {
4573                 vino_module_cleanup(vino_init_stage);
4574                 return -ENOMEM;
4575         }
4576         vino_init_stage++;
4577
4578         memcpy(vcs->v4l_device, &v4l_device_template,
4579                sizeof(struct video_device));
4580         strcpy(vcs->v4l_device->name, name);
4581         vcs->v4l_device->release = video_device_release;
4582
4583         video_set_drvdata(vcs->v4l_device, vcs);
4584
4585         return 0;
4586 }
4587
4588 static int __init vino_module_init(void)
4589 {
4590         int ret;
4591
4592         printk(KERN_INFO "SGI VINO driver version %s\n",
4593                VINO_MODULE_VERSION);
4594
4595         ret = vino_probe();
4596         if (ret)
4597                 return ret;
4598
4599         ret = vino_init();
4600         if (ret)
4601                 return ret;
4602
4603         /* initialize data structures */
4604
4605         spin_lock_init(&vino_drvdata->vino_lock);
4606         spin_lock_init(&vino_drvdata->input_lock);
4607
4608         ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4609                                     vino_v4l_device_name_a);
4610         if (ret)
4611                 return ret;
4612
4613         ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4614                                     vino_v4l_device_name_b);
4615         if (ret)
4616                 return ret;
4617
4618         /* initialize hardware and register V4L devices */
4619
4620         ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4621                 vino_driver_description, NULL);
4622         if (ret) {
4623                 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4624                        SGI_VINO_IRQ);
4625                 vino_module_cleanup(vino_init_stage);
4626                 return -EAGAIN;
4627         }
4628         vino_init_stage++;
4629
4630         ret = vino_i2c_add_bus();
4631         if (ret) {
4632                 printk(KERN_ERR "VINO I2C bus registration failed\n");
4633                 vino_module_cleanup(vino_init_stage);
4634                 return ret;
4635         }
4636         vino_init_stage++;
4637
4638         ret = video_register_device(vino_drvdata->a.v4l_device,
4639                                     VFL_TYPE_GRABBER, -1);
4640         if (ret < 0) {
4641                 printk(KERN_ERR "VINO channel A Video4Linux-device "
4642                        "registration failed\n");
4643                 vino_module_cleanup(vino_init_stage);
4644                 return -EINVAL;
4645         }
4646         vino_init_stage++;
4647
4648         ret = video_register_device(vino_drvdata->b.v4l_device,
4649                                     VFL_TYPE_GRABBER, -1);
4650         if (ret < 0) {
4651                 printk(KERN_ERR "VINO channel B Video4Linux-device "
4652                        "registration failed\n");
4653                 vino_module_cleanup(vino_init_stage);
4654                 return -EINVAL;
4655         }
4656         vino_init_stage++;
4657
4658 #if defined(CONFIG_KMOD) && defined(MODULE)
4659         request_module("saa7191");
4660         request_module("indycam");
4661 #endif
4662
4663         dprintk("init complete!\n");
4664
4665         return 0;
4666 }
4667
4668 static void __exit vino_module_exit(void)
4669 {
4670         dprintk("exiting, stage = %d ...\n", vino_init_stage);
4671         vino_module_cleanup(vino_init_stage);
4672         dprintk("cleanup complete, exit!\n");
4673 }
4674
4675 module_init(vino_module_init);
4676 module_exit(vino_module_exit);