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 fault()
  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/videodev2.h>
  42 #include <media/v4l2-common.h>
  43 #include <media/v4l2-ioctl.h>
  44 #include <linux/video_decoder.h>
  45 #include <linux/mutex.h>
  46
  47 #include <asm/paccess.h>
  48 #include <asm/io.h>
  49 #include <asm/sgi/ip22.h>
  50 #include <asm/sgi/mc.h>
  51
  52 #include "vino.h"
  53 #include "saa7191.h"
  54 #include "indycam.h"
  55
  56 /* Uncomment the following line to get lots and lots of (mostly useless)
  57  * debug info.
  58  * Note that the debug output also slows down the driver significantly */
  59 // #define VINO_DEBUG
  60 // #define VINO_DEBUG_INT
  61
  62 #define VINO_MODULE_VERSION "0.0.5"
  63 #define VINO_VERSION_CODE KERNEL_VERSION(0, 0, 5)
  64
  65 MODULE_DESCRIPTION("SGI VINO Video4Linux2 driver");
  66 MODULE_VERSION(VINO_MODULE_VERSION);
  67 MODULE_AUTHOR("Mikael Nousiainen <tmnousia@cc.hut.fi>");
  68 MODULE_LICENSE("GPL");
  69
  70 #ifdef VINO_DEBUG
  71 #define dprintk(x...) printk("VINO: " x);
  72 #else
  73 #define dprintk(x...)
  74 #endif
  75
  76 #define VINO_NO_CHANNEL                 0
  77 #define VINO_CHANNEL_A                  1
  78 #define VINO_CHANNEL_B                  2
  79
  80 #define VINO_PAL_WIDTH                  768
  81 #define VINO_PAL_HEIGHT                 576
  82 #define VINO_NTSC_WIDTH                 640
  83 #define VINO_NTSC_HEIGHT                480
  84
  85 #define VINO_MIN_WIDTH                  32
  86 #define VINO_MIN_HEIGHT                 32
  87
  88 #define VINO_CLIPPING_START_ODD_D1      1
  89 #define VINO_CLIPPING_START_ODD_PAL     15
  90 #define VINO_CLIPPING_START_ODD_NTSC    12
  91
  92 #define VINO_CLIPPING_START_EVEN_D1     2
  93 #define VINO_CLIPPING_START_EVEN_PAL    15
  94 #define VINO_CLIPPING_START_EVEN_NTSC   12
  95
  96 #define VINO_INPUT_CHANNEL_COUNT        3
  97
  98 /* the number is the index for vino_inputs */
  99 #define VINO_INPUT_NONE                 -1
 100 #define VINO_INPUT_COMPOSITE            0
 101 #define VINO_INPUT_SVIDEO               1
 102 #define VINO_INPUT_D1                   2
 103
 104 #define VINO_PAGE_RATIO                 (PAGE_SIZE / VINO_PAGE_SIZE)
 105
 106 #define VINO_FIFO_THRESHOLD_DEFAULT     16
 107
 108 #define VINO_FRAMEBUFFER_SIZE           ((VINO_PAL_WIDTH \
 109                                           * VINO_PAL_HEIGHT * 4 \
 110                                           + 3 * PAGE_SIZE) & ~(PAGE_SIZE - 1))
 111
 112 #define VINO_FRAMEBUFFER_COUNT_MAX      8
 113
 114 #define VINO_FRAMEBUFFER_UNUSED         0
 115 #define VINO_FRAMEBUFFER_IN_USE         1
 116 #define VINO_FRAMEBUFFER_READY          2
 117
 118 #define VINO_QUEUE_ERROR                -1
 119 #define VINO_QUEUE_MAGIC                0x20050125
 120
 121 #define VINO_MEMORY_NONE                0
 122 #define VINO_MEMORY_MMAP                1
 123 #define VINO_MEMORY_USERPTR             2
 124
 125 #define VINO_DUMMY_DESC_COUNT           4
 126 #define VINO_DESC_FETCH_DELAY           5       /* microseconds */
 127
 128 #define VINO_MAX_FRAME_SKIP_COUNT       128
 129
 130 /* the number is the index for vino_data_formats */
 131 #define VINO_DATA_FMT_NONE              -1
 132 #define VINO_DATA_FMT_GREY              0
 133 #define VINO_DATA_FMT_RGB332            1
 134 #define VINO_DATA_FMT_RGB32             2
 135 #define VINO_DATA_FMT_YUV               3
 136
 137 #define VINO_DATA_FMT_COUNT             4
 138
 139 /* the number is the index for vino_data_norms */
 140 #define VINO_DATA_NORM_NONE             -1
 141 #define VINO_DATA_NORM_NTSC             0
 142 #define VINO_DATA_NORM_PAL              1
 143 #define VINO_DATA_NORM_SECAM            2
 144 #define VINO_DATA_NORM_D1               3
 145 /* The following are special entries that can be used to
 146  * autodetect the norm. */
 147 #define VINO_DATA_NORM_AUTO             0xfe
 148 #define VINO_DATA_NORM_AUTO_EXT         0xff
 149
 150 #define VINO_DATA_NORM_COUNT            4
 151
 152 /* Internal data structure definitions */
 153
 154 struct vino_input {
 155         char *name;
 156         v4l2_std_id std;
 157 };
 158
 159 struct vino_clipping {
 160         unsigned int left, right, top, bottom;
 161 };
 162
 163 struct vino_data_format {
 164         /* the description */
 165         char *description;
 166         /* bytes per pixel */
 167         unsigned int bpp;
 168         /* V4L2 fourcc code */
 169         __u32 pixelformat;
 170         /* V4L2 colorspace (duh!) */
 171         enum v4l2_colorspace colorspace;
 172 };
 173
 174 struct vino_data_norm {
 175         char *description;
 176         unsigned int width, height;
 177         struct vino_clipping odd;
 178         struct vino_clipping even;
 179
 180         v4l2_std_id std;
 181         unsigned int fps_min, fps_max;
 182         __u32 framelines;
 183 };
 184
 185 struct vino_descriptor_table {
 186         /* the number of PAGE_SIZE sized pages in the buffer */
 187         unsigned int page_count;
 188         /* virtual (kmalloc'd) pointers to the actual data
 189          * (in PAGE_SIZE chunks, used with mmap streaming) */
 190         unsigned long *virtual;
 191
 192         /* cpu address for the VINO descriptor table
 193          * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
 194         unsigned long *dma_cpu;
 195         /* dma address for the VINO descriptor table
 196          * (contains DMA addresses, VINO_PAGE_SIZE chunks) */
 197         dma_addr_t dma;
 198 };
 199
 200 struct vino_framebuffer {
 201         /* identifier nubmer */
 202         unsigned int id;
 203         /* the length of the whole buffer */
 204         unsigned int size;
 205         /* the length of actual data in buffer */
 206         unsigned int data_size;
 207         /* the data format */
 208         unsigned int data_format;
 209         /* the state of buffer data */
 210         unsigned int state;
 211         /* is the buffer mapped in user space? */
 212         unsigned int map_count;
 213         /* memory offset for mmap() */
 214         unsigned int offset;
 215         /* frame counter */
 216         unsigned int frame_counter;
 217         /* timestamp (written when image capture finishes) */
 218         struct timeval timestamp;
 219
 220         struct vino_descriptor_table desc_table;
 221
 222         spinlock_t state_lock;
 223 };
 224
 225 struct vino_framebuffer_fifo {
 226         unsigned int length;
 227
 228         unsigned int used;
 229         unsigned int head;
 230         unsigned int tail;
 231
 232         unsigned int data[VINO_FRAMEBUFFER_COUNT_MAX];
 233 };
 234
 235 struct vino_framebuffer_queue {
 236         unsigned int magic;
 237
 238         /* VINO_MEMORY_NONE, VINO_MEMORY_MMAP or VINO_MEMORY_USERPTR */
 239         unsigned int type;
 240         unsigned int length;
 241
 242         /* data field of in and out contain index numbers for buffer */
 243         struct vino_framebuffer_fifo in;
 244         struct vino_framebuffer_fifo out;
 245
 246         struct vino_framebuffer *buffer[VINO_FRAMEBUFFER_COUNT_MAX];
 247
 248         spinlock_t queue_lock;
 249         struct mutex queue_mutex;
 250         wait_queue_head_t frame_wait_queue;
 251 };
 252
 253 struct vino_interrupt_data {
 254         struct timeval timestamp;
 255         unsigned int frame_counter;
 256         unsigned int skip_count;
 257         unsigned int skip;
 258 };
 259
 260 struct vino_channel_settings {
 261         unsigned int channel;
 262
 263         int input;
 264         unsigned int data_format;
 265         unsigned int data_norm;
 266         struct vino_clipping clipping;
 267         unsigned int decimation;
 268         unsigned int line_size;
 269         unsigned int alpha;
 270         unsigned int fps;
 271         unsigned int framert_reg;
 272
 273         unsigned int fifo_threshold;
 274
 275         struct vino_framebuffer_queue fb_queue;
 276
 277         /* number of the current field */
 278         unsigned int field;
 279
 280         /* read in progress */
 281         int reading;
 282         /* streaming is active */
 283         int streaming;
 284         /* the driver is currently processing the queue */
 285         int capturing;
 286
 287         struct mutex mutex;
 288         spinlock_t capture_lock;
 289
 290         unsigned int users;
 291
 292         struct vino_interrupt_data int_data;
 293
 294         /* V4L support */
 295         struct video_device *v4l_device;
 296 };
 297
 298 struct vino_client {
 299         /* the channel which owns this client:
 300          * VINO_NO_CHANNEL, VINO_CHANNEL_A or VINO_CHANNEL_B */
 301         unsigned int owner;
 302         struct i2c_client *driver;
 303 };
 304
 305 struct vino_settings {
 306         struct vino_channel_settings a;
 307         struct vino_channel_settings b;
 308
 309         struct vino_client decoder;
 310         struct vino_client camera;
 311
 312         /* a lock for vino register access */
 313         spinlock_t vino_lock;
 314         /* a lock for channel input changes */
 315         spinlock_t input_lock;
 316
 317         unsigned long dummy_page;
 318         struct vino_descriptor_table dummy_desc_table;
 319 };
 320
 321 /* Module parameters */
 322
 323 /*
 324  * Using vino_pixel_conversion the ABGR32-format pixels supplied
 325  * by the VINO chip can be converted to more common formats
 326  * like RGBA32 (or probably RGB24 in the future). This way we
 327  * can give out data that can be specified correctly with
 328  * the V4L2-definitions.
 329  *
 330  * The pixel format is specified as RGBA32 when no conversion
 331  * is used.
 332  *
 333  * Note that this only affects the 32-bit bit depth.
 334  *
 335  * Use non-zero value to enable conversion.
 336  */
 337 static int vino_pixel_conversion;
 338
 339 module_param_named(pixelconv, vino_pixel_conversion, int, 0);
 340
 341 MODULE_PARM_DESC(pixelconv,
 342                  "enable pixel conversion (non-zero value enables)");
 343
 344 /* Internal data structures */
 345
 346 static struct sgi_vino *vino;
 347
 348 static struct vino_settings *vino_drvdata;
 349
 350 static const char *vino_driver_name = "vino";
 351 static const char *vino_driver_description = "SGI VINO";
 352 static const char *vino_bus_name = "GIO64 bus";
 353 static const char *vino_v4l_device_name_a = "SGI VINO Channel A";
 354 static const char *vino_v4l_device_name_b = "SGI VINO Channel B";
 355
 356 static void vino_capture_tasklet(unsigned long channel);
 357
 358 DECLARE_TASKLET(vino_tasklet_a, vino_capture_tasklet, VINO_CHANNEL_A);
 359 DECLARE_TASKLET(vino_tasklet_b, vino_capture_tasklet, VINO_CHANNEL_B);
 360
 361 static const struct vino_input vino_inputs[] = {
 362         {
 363                 .name           = "Composite",
 364                 .std            = V4L2_STD_NTSC | V4L2_STD_PAL
 365                 | V4L2_STD_SECAM,
 366         },{
 367                 .name           = "S-Video",
 368                 .std            = V4L2_STD_NTSC | V4L2_STD_PAL
 369                 | V4L2_STD_SECAM,
 370         },{
 371                 .name           = "D1/IndyCam",
 372                 .std            = V4L2_STD_NTSC,
 373         }
 374 };
 375
 376 static const struct vino_data_format vino_data_formats[] = {
 377         {
 378                 .description    = "8-bit greyscale",
 379                 .bpp            = 1,
 380                 .pixelformat    = V4L2_PIX_FMT_GREY,
 381                 .colorspace     = V4L2_COLORSPACE_SMPTE170M,
 382         },{
 383                 .description    = "8-bit dithered RGB 3-3-2",
 384                 .bpp            = 1,
 385                 .pixelformat    = V4L2_PIX_FMT_RGB332,
 386                 .colorspace     = V4L2_COLORSPACE_SRGB,
 387         },{
 388                 .description    = "32-bit RGB",
 389                 .bpp            = 4,
 390                 .pixelformat    = V4L2_PIX_FMT_RGB32,
 391                 .colorspace     = V4L2_COLORSPACE_SRGB,
 392         },{
 393                 .description    = "YUV 4:2:2",
 394                 .bpp            = 2,
 395                 .pixelformat    = V4L2_PIX_FMT_YUYV, // XXX: swapped?
 396                 .colorspace     = V4L2_COLORSPACE_SMPTE170M,
 397         }
 398 };
 399
 400 static const struct vino_data_norm vino_data_norms[] = {
 401         {
 402                 .description    = "NTSC",
 403                 .std            = V4L2_STD_NTSC,
 404                 .fps_min        = 6,
 405                 .fps_max        = 30,
 406                 .framelines     = 525,
 407                 .width          = VINO_NTSC_WIDTH,
 408                 .height         = VINO_NTSC_HEIGHT,
 409                 .odd            = {
 410                         .top    = VINO_CLIPPING_START_ODD_NTSC,
 411                         .left   = 0,
 412                         .bottom = VINO_CLIPPING_START_ODD_NTSC
 413                         + VINO_NTSC_HEIGHT / 2 - 1,
 414                         .right  = VINO_NTSC_WIDTH,
 415                 },
 416                 .even           = {
 417                         .top    = VINO_CLIPPING_START_EVEN_NTSC,
 418                         .left   = 0,
 419                         .bottom = VINO_CLIPPING_START_EVEN_NTSC
 420                         + VINO_NTSC_HEIGHT / 2 - 1,
 421                         .right  = VINO_NTSC_WIDTH,
 422                 },
 423         },{
 424                 .description    = "PAL",
 425                 .std            = V4L2_STD_PAL,
 426                 .fps_min        = 5,
 427                 .fps_max        = 25,
 428                 .framelines     = 625,
 429                 .width          = VINO_PAL_WIDTH,
 430                 .height         = VINO_PAL_HEIGHT,
 431                 .odd            = {
 432                         .top    = VINO_CLIPPING_START_ODD_PAL,
 433                         .left   = 0,
 434                         .bottom = VINO_CLIPPING_START_ODD_PAL
 435                         + VINO_PAL_HEIGHT / 2 - 1,
 436                         .right  = VINO_PAL_WIDTH,
 437                 },
 438                 .even           = {
 439                         .top    = VINO_CLIPPING_START_EVEN_PAL,
 440                         .left   = 0,
 441                         .bottom = VINO_CLIPPING_START_EVEN_PAL
 442                         + VINO_PAL_HEIGHT / 2 - 1,
 443                         .right  = VINO_PAL_WIDTH,
 444                 },
 445         },{
 446                 .description    = "SECAM",
 447                 .std            = V4L2_STD_SECAM,
 448                 .fps_min        = 5,
 449                 .fps_max        = 25,
 450                 .framelines     = 625,
 451                 .width          = VINO_PAL_WIDTH,
 452                 .height         = VINO_PAL_HEIGHT,
 453                 .odd            = {
 454                         .top    = VINO_CLIPPING_START_ODD_PAL,
 455                         .left   = 0,
 456                         .bottom = VINO_CLIPPING_START_ODD_PAL
 457                         + VINO_PAL_HEIGHT / 2 - 1,
 458                         .right  = VINO_PAL_WIDTH,
 459                 },
 460                 .even           = {
 461                         .top    = VINO_CLIPPING_START_EVEN_PAL,
 462                         .left   = 0,
 463                         .bottom = VINO_CLIPPING_START_EVEN_PAL
 464                         + VINO_PAL_HEIGHT / 2 - 1,
 465                         .right  = VINO_PAL_WIDTH,
 466                 },
 467         },{
 468                 .description    = "NTSC/D1",
 469                 .std            = V4L2_STD_NTSC,
 470                 .fps_min        = 6,
 471                 .fps_max        = 30,
 472                 .framelines     = 525,
 473                 .width          = VINO_NTSC_WIDTH,
 474                 .height         = VINO_NTSC_HEIGHT,
 475                 .odd            = {
 476                         .top    = VINO_CLIPPING_START_ODD_D1,
 477                         .left   = 0,
 478                         .bottom = VINO_CLIPPING_START_ODD_D1
 479                         + VINO_NTSC_HEIGHT / 2 - 1,
 480                         .right  = VINO_NTSC_WIDTH,
 481                 },
 482                 .even           = {
 483                         .top    = VINO_CLIPPING_START_EVEN_D1,
 484                         .left   = 0,
 485                         .bottom = VINO_CLIPPING_START_EVEN_D1
 486                         + VINO_NTSC_HEIGHT / 2 - 1,
 487                         .right  = VINO_NTSC_WIDTH,
 488                 },
 489         }
 490 };
 491
 492 #define VINO_INDYCAM_V4L2_CONTROL_COUNT         9
 493
 494 struct v4l2_queryctrl vino_indycam_v4l2_controls[] = {
 495         {
 496                 .id = V4L2_CID_AUTOGAIN,
 497                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 498                 .name = "Automatic Gain Control",
 499                 .minimum = 0,
 500                 .maximum = 1,
 501                 .step = 1,
 502                 .default_value = INDYCAM_AGC_DEFAULT,
 503                 .flags = 0,
 504                 .reserved = { INDYCAM_CONTROL_AGC, 0 },
 505         },{
 506                 .id = V4L2_CID_AUTO_WHITE_BALANCE,
 507                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 508                 .name = "Automatic White Balance",
 509                 .minimum = 0,
 510                 .maximum = 1,
 511                 .step = 1,
 512                 .default_value = INDYCAM_AWB_DEFAULT,
 513                 .flags = 0,
 514                 .reserved = { INDYCAM_CONTROL_AWB, 0 },
 515         },{
 516                 .id = V4L2_CID_GAIN,
 517                 .type = V4L2_CTRL_TYPE_INTEGER,
 518                 .name = "Gain",
 519                 .minimum = INDYCAM_GAIN_MIN,
 520                 .maximum = INDYCAM_GAIN_MAX,
 521                 .step = 1,
 522                 .default_value = INDYCAM_GAIN_DEFAULT,
 523                 .flags = 0,
 524                 .reserved = { INDYCAM_CONTROL_GAIN, 0 },
 525         },{
 526                 .id = V4L2_CID_PRIVATE_BASE,
 527                 .type = V4L2_CTRL_TYPE_INTEGER,
 528                 .name = "Red Saturation",
 529                 .minimum = INDYCAM_RED_SATURATION_MIN,
 530                 .maximum = INDYCAM_RED_SATURATION_MAX,
 531                 .step = 1,
 532                 .default_value = INDYCAM_RED_SATURATION_DEFAULT,
 533                 .flags = 0,
 534                 .reserved = { INDYCAM_CONTROL_RED_SATURATION, 0 },
 535         },{
 536                 .id = V4L2_CID_PRIVATE_BASE + 1,
 537                 .type = V4L2_CTRL_TYPE_INTEGER,
 538                 .name = "Blue Saturation",
 539                 .minimum = INDYCAM_BLUE_SATURATION_MIN,
 540                 .maximum = INDYCAM_BLUE_SATURATION_MAX,
 541                 .step = 1,
 542                 .default_value = INDYCAM_BLUE_SATURATION_DEFAULT,
 543                 .flags = 0,
 544                 .reserved = { INDYCAM_CONTROL_BLUE_SATURATION, 0 },
 545         },{
 546                 .id = V4L2_CID_RED_BALANCE,
 547                 .type = V4L2_CTRL_TYPE_INTEGER,
 548                 .name = "Red Balance",
 549                 .minimum = INDYCAM_RED_BALANCE_MIN,
 550                 .maximum = INDYCAM_RED_BALANCE_MAX,
 551                 .step = 1,
 552                 .default_value = INDYCAM_RED_BALANCE_DEFAULT,
 553                 .flags = 0,
 554                 .reserved = { INDYCAM_CONTROL_RED_BALANCE, 0 },
 555         },{
 556                 .id = V4L2_CID_BLUE_BALANCE,
 557                 .type = V4L2_CTRL_TYPE_INTEGER,
 558                 .name = "Blue Balance",
 559                 .minimum = INDYCAM_BLUE_BALANCE_MIN,
 560                 .maximum = INDYCAM_BLUE_BALANCE_MAX,
 561                 .step = 1,
 562                 .default_value = INDYCAM_BLUE_BALANCE_DEFAULT,
 563                 .flags = 0,
 564                 .reserved = { INDYCAM_CONTROL_BLUE_BALANCE, 0 },
 565         },{
 566                 .id = V4L2_CID_EXPOSURE,
 567                 .type = V4L2_CTRL_TYPE_INTEGER,
 568                 .name = "Shutter Control",
 569                 .minimum = INDYCAM_SHUTTER_MIN,
 570                 .maximum = INDYCAM_SHUTTER_MAX,
 571                 .step = 1,
 572                 .default_value = INDYCAM_SHUTTER_DEFAULT,
 573                 .flags = 0,
 574                 .reserved = { INDYCAM_CONTROL_SHUTTER, 0 },
 575         },{
 576                 .id = V4L2_CID_GAMMA,
 577                 .type = V4L2_CTRL_TYPE_INTEGER,
 578                 .name = "Gamma",
 579                 .minimum = INDYCAM_GAMMA_MIN,
 580                 .maximum = INDYCAM_GAMMA_MAX,
 581                 .step = 1,
 582                 .default_value = INDYCAM_GAMMA_DEFAULT,
 583                 .flags = 0,
 584                 .reserved = { INDYCAM_CONTROL_GAMMA, 0 },
 585         }
 586 };
 587
 588 #define VINO_SAA7191_V4L2_CONTROL_COUNT         9
 589
 590 struct v4l2_queryctrl vino_saa7191_v4l2_controls[] = {
 591         {
 592                 .id = V4L2_CID_HUE,
 593                 .type = V4L2_CTRL_TYPE_INTEGER,
 594                 .name = "Hue",
 595                 .minimum = SAA7191_HUE_MIN,
 596                 .maximum = SAA7191_HUE_MAX,
 597                 .step = 1,
 598                 .default_value = SAA7191_HUE_DEFAULT,
 599                 .flags = 0,
 600                 .reserved = { SAA7191_CONTROL_HUE, 0 },
 601         },{
 602                 .id = V4L2_CID_PRIVATE_BASE,
 603                 .type = V4L2_CTRL_TYPE_INTEGER,
 604                 .name = "Luminance Bandpass",
 605                 .minimum = SAA7191_BANDPASS_MIN,
 606                 .maximum = SAA7191_BANDPASS_MAX,
 607                 .step = 1,
 608                 .default_value = SAA7191_BANDPASS_DEFAULT,
 609                 .flags = 0,
 610                 .reserved = { SAA7191_CONTROL_BANDPASS, 0 },
 611         },{
 612                 .id = V4L2_CID_PRIVATE_BASE + 1,
 613                 .type = V4L2_CTRL_TYPE_INTEGER,
 614                 .name = "Luminance Bandpass Weight",
 615                 .minimum = SAA7191_BANDPASS_WEIGHT_MIN,
 616                 .maximum = SAA7191_BANDPASS_WEIGHT_MAX,
 617                 .step = 1,
 618                 .default_value = SAA7191_BANDPASS_WEIGHT_DEFAULT,
 619                 .flags = 0,
 620                 .reserved = { SAA7191_CONTROL_BANDPASS_WEIGHT, 0 },
 621         },{
 622                 .id = V4L2_CID_PRIVATE_BASE + 2,
 623                 .type = V4L2_CTRL_TYPE_INTEGER,
 624                 .name = "HF Luminance Coring",
 625                 .minimum = SAA7191_CORING_MIN,
 626                 .maximum = SAA7191_CORING_MAX,
 627                 .step = 1,
 628                 .default_value = SAA7191_CORING_DEFAULT,
 629                 .flags = 0,
 630                 .reserved = { SAA7191_CONTROL_CORING, 0 },
 631         },{
 632                 .id = V4L2_CID_PRIVATE_BASE + 3,
 633                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 634                 .name = "Force Colour",
 635                 .minimum = SAA7191_FORCE_COLOUR_MIN,
 636                 .maximum = SAA7191_FORCE_COLOUR_MAX,
 637                 .step = 1,
 638                 .default_value = SAA7191_FORCE_COLOUR_DEFAULT,
 639                 .flags = 0,
 640                 .reserved = { SAA7191_CONTROL_FORCE_COLOUR, 0 },
 641         },{
 642                 .id = V4L2_CID_PRIVATE_BASE + 4,
 643                 .type = V4L2_CTRL_TYPE_INTEGER,
 644                 .name = "Chrominance Gain Control",
 645                 .minimum = SAA7191_CHROMA_GAIN_MIN,
 646                 .maximum = SAA7191_CHROMA_GAIN_MAX,
 647                 .step = 1,
 648                 .default_value = SAA7191_CHROMA_GAIN_DEFAULT,
 649                 .flags = 0,
 650                 .reserved = { SAA7191_CONTROL_CHROMA_GAIN, 0 },
 651         },{
 652                 .id = V4L2_CID_PRIVATE_BASE + 5,
 653                 .type = V4L2_CTRL_TYPE_BOOLEAN,
 654                 .name = "VTR Time Constant",
 655                 .minimum = SAA7191_VTRC_MIN,
 656                 .maximum = SAA7191_VTRC_MAX,
 657                 .step = 1,
 658                 .default_value = SAA7191_VTRC_DEFAULT,
 659                 .flags = 0,
 660                 .reserved = { SAA7191_CONTROL_VTRC, 0 },
 661         },{
 662                 .id = V4L2_CID_PRIVATE_BASE + 6,
 663                 .type = V4L2_CTRL_TYPE_INTEGER,
 664                 .name = "Luminance Delay Compensation",
 665                 .minimum = SAA7191_LUMA_DELAY_MIN,
 666                 .maximum = SAA7191_LUMA_DELAY_MAX,
 667                 .step = 1,
 668                 .default_value = SAA7191_LUMA_DELAY_DEFAULT,
 669                 .flags = 0,
 670                 .reserved = { SAA7191_CONTROL_LUMA_DELAY, 0 },
 671         },{
 672                 .id = V4L2_CID_PRIVATE_BASE + 7,
 673                 .type = V4L2_CTRL_TYPE_INTEGER,
 674                 .name = "Vertical Noise Reduction",
 675                 .minimum = SAA7191_VNR_MIN,
 676                 .maximum = SAA7191_VNR_MAX,
 677                 .step = 1,
 678                 .default_value = SAA7191_VNR_DEFAULT,
 679                 .flags = 0,
 680                 .reserved = { SAA7191_CONTROL_VNR, 0 },
 681         }
 682 };
 683
 684 /* VINO I2C bus functions */
 685
 686 unsigned i2c_vino_getctrl(void *data)
 687 {
 688         return vino->i2c_control;
 689 }
 690
 691 void i2c_vino_setctrl(void *data, unsigned val)
 692 {
 693         vino->i2c_control = val;
 694 }
 695
 696 unsigned i2c_vino_rdata(void *data)
 697 {
 698         return vino->i2c_data;
 699 }
 700
 701 void i2c_vino_wdata(void *data, unsigned val)
 702 {
 703         vino->i2c_data = val;
 704 }
 705
 706 static struct i2c_algo_sgi_data i2c_sgi_vino_data =
 707 {
 708         .getctrl = &i2c_vino_getctrl,
 709         .setctrl = &i2c_vino_setctrl,
 710         .rdata   = &i2c_vino_rdata,
 711         .wdata   = &i2c_vino_wdata,
 712         .xfer_timeout = 200,
 713         .ack_timeout  = 1000,
 714 };
 715
 716 /*
 717  * There are two possible clients on VINO I2C bus, so we limit usage only
 718  * to them.
 719  */
 720 static int i2c_vino_client_reg(struct i2c_client *client)
 721 {
 722         unsigned long flags;
 723         int ret = 0;
 724
 725         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
 726         switch (client->driver->id) {
 727         case I2C_DRIVERID_SAA7191:
 728                 if (vino_drvdata->decoder.driver)
 729                         ret = -EBUSY;
 730                 else
 731                         vino_drvdata->decoder.driver = client;
 732                 break;
 733         case I2C_DRIVERID_INDYCAM:
 734                 if (vino_drvdata->camera.driver)
 735                         ret = -EBUSY;
 736                 else
 737                         vino_drvdata->camera.driver = client;
 738                 break;
 739         default:
 740                 ret = -ENODEV;
 741         }
 742         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
 743
 744         return ret;
 745 }
 746
 747 static int i2c_vino_client_unreg(struct i2c_client *client)
 748 {
 749         unsigned long flags;
 750         int ret = 0;
 751
 752         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
 753         if (client == vino_drvdata->decoder.driver) {
 754                 if (vino_drvdata->decoder.owner != VINO_NO_CHANNEL)
 755                         ret = -EBUSY;
 756                 else
 757                         vino_drvdata->decoder.driver = NULL;
 758         } else if (client == vino_drvdata->camera.driver) {
 759                 if (vino_drvdata->camera.owner != VINO_NO_CHANNEL)
 760                         ret = -EBUSY;
 761                 else
 762                         vino_drvdata->camera.driver = NULL;
 763         }
 764         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
 765
 766         return ret;
 767 }
 768
 769 static struct i2c_adapter vino_i2c_adapter =
 770 {
 771         .name                   = "VINO I2C bus",
 772         .id                     = I2C_HW_SGI_VINO,
 773         .algo_data              = &i2c_sgi_vino_data,
 774         .client_register        = &i2c_vino_client_reg,
 775         .client_unregister      = &i2c_vino_client_unreg,
 776 };
 777
 778 static int vino_i2c_add_bus(void)
 779 {
 780         return i2c_sgi_add_bus(&vino_i2c_adapter);
 781 }
 782
 783 static int vino_i2c_del_bus(void)
 784 {
 785         return i2c_del_adapter(&vino_i2c_adapter);
 786 }
 787
 788 static int i2c_camera_command(unsigned int cmd, void *arg)
 789 {
 790         return vino_drvdata->camera.driver->
 791                 driver->command(vino_drvdata->camera.driver,
 792                                 cmd, arg);
 793 }
 794
 795 static int i2c_decoder_command(unsigned int cmd, void *arg)
 796 {
 797         return vino_drvdata->decoder.driver->
 798                 driver->command(vino_drvdata->decoder.driver,
 799                                 cmd, arg);
 800 }
 801
 802 /* VINO framebuffer/DMA descriptor management */
 803
 804 static void vino_free_buffer_with_count(struct vino_framebuffer *fb,
 805                                                unsigned int count)
 806 {
 807         unsigned int i;
 808
 809         dprintk("vino_free_buffer_with_count(): count = %d\n", count);
 810
 811         for (i = 0; i < count; i++) {
 812                 ClearPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
 813                 dma_unmap_single(NULL,
 814                                  fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
 815                                  PAGE_SIZE, DMA_FROM_DEVICE);
 816                 free_page(fb->desc_table.virtual[i]);
 817         }
 818
 819         dma_free_coherent(NULL,
 820                           VINO_PAGE_RATIO * (fb->desc_table.page_count + 4) *
 821                           sizeof(dma_addr_t), (void *)fb->desc_table.dma_cpu,
 822                           fb->desc_table.dma);
 823         kfree(fb->desc_table.virtual);
 824
 825         memset(fb, 0, sizeof(struct vino_framebuffer));
 826 }
 827
 828 static void vino_free_buffer(struct vino_framebuffer *fb)
 829 {
 830         vino_free_buffer_with_count(fb, fb->desc_table.page_count);
 831 }
 832
 833 static int vino_allocate_buffer(struct vino_framebuffer *fb,
 834                                 unsigned int size)
 835 {
 836         unsigned int count, i, j;
 837         int ret = 0;
 838
 839         dprintk("vino_allocate_buffer():\n");
 840
 841         if (size < 1)
 842                 return -EINVAL;
 843
 844         memset(fb, 0, sizeof(struct vino_framebuffer));
 845
 846         count = ((size / PAGE_SIZE) + 4) & ~3;
 847
 848         dprintk("vino_allocate_buffer(): size = %d, count = %d\n",
 849                 size, count);
 850
 851         /* allocate memory for table with virtual (page) addresses */
 852         fb->desc_table.virtual = (unsigned long *)
 853                 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
 854         if (!fb->desc_table.virtual)
 855                 return -ENOMEM;
 856
 857         /* allocate memory for table with dma addresses
 858          * (has space for four extra descriptors) */
 859         fb->desc_table.dma_cpu =
 860                 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
 861                                    sizeof(dma_addr_t), &fb->desc_table.dma,
 862                                    GFP_KERNEL | GFP_DMA);
 863         if (!fb->desc_table.dma_cpu) {
 864                 ret = -ENOMEM;
 865                 goto out_free_virtual;
 866         }
 867
 868         /* allocate pages for the buffer and acquire the according
 869          * dma addresses */
 870         for (i = 0; i < count; i++) {
 871                 dma_addr_t dma_data_addr;
 872
 873                 fb->desc_table.virtual[i] =
 874                         get_zeroed_page(GFP_KERNEL | GFP_DMA);
 875                 if (!fb->desc_table.virtual[i]) {
 876                         ret = -ENOBUFS;
 877                         break;
 878                 }
 879
 880                 dma_data_addr =
 881                         dma_map_single(NULL,
 882                                        (void *)fb->desc_table.virtual[i],
 883                                        PAGE_SIZE, DMA_FROM_DEVICE);
 884
 885                 for (j = 0; j < VINO_PAGE_RATIO; j++) {
 886                         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
 887                                 dma_data_addr + VINO_PAGE_SIZE * j;
 888                 }
 889
 890                 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
 891         }
 892
 893         /* page_count needs to be set anyway, because the descriptor table has
 894          * been allocated according to this number */
 895         fb->desc_table.page_count = count;
 896
 897         if (ret) {
 898                 /* the descriptor with index i doesn't contain
 899                  * a valid address yet */
 900                 vino_free_buffer_with_count(fb, i);
 901                 return ret;
 902         }
 903
 904         //fb->size = size;
 905         fb->size = count * PAGE_SIZE;
 906         fb->data_format = VINO_DATA_FMT_NONE;
 907
 908         /* set the dma stop-bit for the last (count+1)th descriptor */
 909         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
 910         return 0;
 911
 912  out_free_virtual:
 913         kfree(fb->desc_table.virtual);
 914         return ret;
 915 }
 916
 917 #if 0
 918 /* user buffers not fully implemented yet */
 919 static int vino_prepare_user_buffer(struct vino_framebuffer *fb,
 920                                      void *user,
 921                                      unsigned int size)
 922 {
 923         unsigned int count, i, j;
 924         int ret = 0;
 925
 926         dprintk("vino_prepare_user_buffer():\n");
 927
 928         if (size < 1)
 929                 return -EINVAL;
 930
 931         memset(fb, 0, sizeof(struct vino_framebuffer));
 932
 933         count = ((size / PAGE_SIZE)) & ~3;
 934
 935         dprintk("vino_prepare_user_buffer(): size = %d, count = %d\n",
 936                 size, count);
 937
 938         /* allocate memory for table with virtual (page) addresses */
 939         fb->desc_table.virtual = (unsigned long *)
 940                 kmalloc(count * sizeof(unsigned long), GFP_KERNEL);
 941         if (!fb->desc_table.virtual)
 942                 return -ENOMEM;
 943
 944         /* allocate memory for table with dma addresses
 945          * (has space for four extra descriptors) */
 946         fb->desc_table.dma_cpu =
 947                 dma_alloc_coherent(NULL, VINO_PAGE_RATIO * (count + 4) *
 948                                    sizeof(dma_addr_t), &fb->desc_table.dma,
 949                                    GFP_KERNEL | GFP_DMA);
 950         if (!fb->desc_table.dma_cpu) {
 951                 ret = -ENOMEM;
 952                 goto out_free_virtual;
 953         }
 954
 955         /* allocate pages for the buffer and acquire the according
 956          * dma addresses */
 957         for (i = 0; i < count; i++) {
 958                 dma_addr_t dma_data_addr;
 959
 960                 fb->desc_table.virtual[i] =
 961                         get_zeroed_page(GFP_KERNEL | GFP_DMA);
 962                 if (!fb->desc_table.virtual[i]) {
 963                         ret = -ENOBUFS;
 964                         break;
 965                 }
 966
 967                 dma_data_addr =
 968                         dma_map_single(NULL,
 969                                        (void *)fb->desc_table.virtual[i],
 970                                        PAGE_SIZE, DMA_FROM_DEVICE);
 971
 972                 for (j = 0; j < VINO_PAGE_RATIO; j++) {
 973                         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i + j] =
 974                                 dma_data_addr + VINO_PAGE_SIZE * j;
 975                 }
 976
 977                 SetPageReserved(virt_to_page((void *)fb->desc_table.virtual[i]));
 978         }
 979
 980         /* page_count needs to be set anyway, because the descriptor table has
 981          * been allocated according to this number */
 982         fb->desc_table.page_count = count;
 983
 984         if (ret) {
 985                 /* the descriptor with index i doesn't contain
 986                  * a valid address yet */
 987                 vino_free_buffer_with_count(fb, i);
 988                 return ret;
 989         }
 990
 991         //fb->size = size;
 992         fb->size = count * PAGE_SIZE;
 993
 994         /* set the dma stop-bit for the last (count+1)th descriptor */
 995         fb->desc_table.dma_cpu[VINO_PAGE_RATIO * count] = VINO_DESC_STOP;
 996         return 0;
 997
 998  out_free_virtual:
 999         kfree(fb->desc_table.virtual);
1000         return ret;
1001 }
1002 #endif
1003
1004 static void vino_sync_buffer(struct vino_framebuffer *fb)
1005 {
1006         int i;
1007
1008         dprintk("vino_sync_buffer():\n");
1009
1010         for (i = 0; i < fb->desc_table.page_count; i++)
1011                 dma_sync_single(NULL,
1012                                 fb->desc_table.dma_cpu[VINO_PAGE_RATIO * i],
1013                                 PAGE_SIZE, DMA_FROM_DEVICE);
1014 }
1015
1016 /* Framebuffer fifo functions (need to be locked externally) */
1017
1018 static inline void vino_fifo_init(struct vino_framebuffer_fifo *f,
1019                            unsigned int length)
1020 {
1021         f->length = 0;
1022         f->used = 0;
1023         f->head = 0;
1024         f->tail = 0;
1025
1026         if (length > VINO_FRAMEBUFFER_COUNT_MAX)
1027                 length = VINO_FRAMEBUFFER_COUNT_MAX;
1028
1029         f->length = length;
1030 }
1031
1032 /* returns true/false */
1033 static inline int vino_fifo_has_id(struct vino_framebuffer_fifo *f,
1034                                    unsigned int id)
1035 {
1036         unsigned int i;
1037
1038         for (i = f->head; i == (f->tail - 1); i = (i + 1) % f->length) {
1039                 if (f->data[i] == id)
1040                         return 1;
1041         }
1042
1043         return 0;
1044 }
1045
1046 #if 0
1047 /* returns true/false */
1048 static inline int vino_fifo_full(struct vino_framebuffer_fifo *f)
1049 {
1050         return (f->used == f->length);
1051 }
1052 #endif
1053
1054 static inline unsigned int vino_fifo_get_used(struct vino_framebuffer_fifo *f)
1055 {
1056         return f->used;
1057 }
1058
1059 static int vino_fifo_enqueue(struct vino_framebuffer_fifo *f, unsigned int id)
1060 {
1061         if (id >= f->length) {
1062                 return VINO_QUEUE_ERROR;
1063         }
1064
1065         if (vino_fifo_has_id(f, id)) {
1066                 return VINO_QUEUE_ERROR;
1067         }
1068
1069         if (f->used < f->length) {
1070                 f->data[f->tail] = id;
1071                 f->tail = (f->tail + 1) % f->length;
1072                 f->used++;
1073         } else {
1074                 return VINO_QUEUE_ERROR;
1075         }
1076
1077         return 0;
1078 }
1079
1080 static int vino_fifo_peek(struct vino_framebuffer_fifo *f, unsigned int *id)
1081 {
1082         if (f->used > 0) {
1083                 *id = f->data[f->head];
1084         } else {
1085                 return VINO_QUEUE_ERROR;
1086         }
1087
1088         return 0;
1089 }
1090
1091 static int vino_fifo_dequeue(struct vino_framebuffer_fifo *f, unsigned int *id)
1092 {
1093         if (f->used > 0) {
1094                 *id = f->data[f->head];
1095                 f->head = (f->head + 1) % f->length;
1096                 f->used--;
1097         } else {
1098                 return VINO_QUEUE_ERROR;
1099         }
1100
1101         return 0;
1102 }
1103
1104 /* Framebuffer queue functions */
1105
1106 /* execute with queue_lock locked */
1107 static void vino_queue_free_with_count(struct vino_framebuffer_queue *q,
1108                                        unsigned int length)
1109 {
1110         unsigned int i;
1111
1112         q->length = 0;
1113         memset(&q->in, 0, sizeof(struct vino_framebuffer_fifo));
1114         memset(&q->out, 0, sizeof(struct vino_framebuffer_fifo));
1115         for (i = 0; i < length; i++) {
1116                 dprintk("vino_queue_free_with_count(): freeing buffer %d\n",
1117                         i);
1118                 vino_free_buffer(q->buffer[i]);
1119                 kfree(q->buffer[i]);
1120         }
1121
1122         q->type = VINO_MEMORY_NONE;
1123         q->magic = 0;
1124 }
1125
1126 static void vino_queue_free(struct vino_framebuffer_queue *q)
1127 {
1128         dprintk("vino_queue_free():\n");
1129
1130         if (q->magic != VINO_QUEUE_MAGIC)
1131                 return;
1132         if (q->type != VINO_MEMORY_MMAP)
1133                 return;
1134
1135         mutex_lock(&q->queue_mutex);
1136
1137         vino_queue_free_with_count(q, q->length);
1138
1139         mutex_unlock(&q->queue_mutex);
1140 }
1141
1142 static int vino_queue_init(struct vino_framebuffer_queue *q,
1143                            unsigned int *length)
1144 {
1145         unsigned int i;
1146         int ret = 0;
1147
1148         dprintk("vino_queue_init(): length = %d\n", *length);
1149
1150         if (q->magic == VINO_QUEUE_MAGIC) {
1151                 dprintk("vino_queue_init(): queue already initialized!\n");
1152                 return -EINVAL;
1153         }
1154
1155         if (q->type != VINO_MEMORY_NONE) {
1156                 dprintk("vino_queue_init(): queue already initialized!\n");
1157                 return -EINVAL;
1158         }
1159
1160         if (*length < 1)
1161                 return -EINVAL;
1162
1163         mutex_lock(&q->queue_mutex);
1164
1165         if (*length > VINO_FRAMEBUFFER_COUNT_MAX)
1166                 *length = VINO_FRAMEBUFFER_COUNT_MAX;
1167
1168         q->length = 0;
1169
1170         for (i = 0; i < *length; i++) {
1171                 dprintk("vino_queue_init(): allocating buffer %d\n", i);
1172                 q->buffer[i] = kmalloc(sizeof(struct vino_framebuffer),
1173                                        GFP_KERNEL);
1174                 if (!q->buffer[i]) {
1175                         dprintk("vino_queue_init(): kmalloc() failed\n");
1176                         ret = -ENOMEM;
1177                         break;
1178                 }
1179
1180                 ret = vino_allocate_buffer(q->buffer[i],
1181                                            VINO_FRAMEBUFFER_SIZE);
1182                 if (ret) {
1183                         kfree(q->buffer[i]);
1184                         dprintk("vino_queue_init(): "
1185                                 "vino_allocate_buffer() failed\n");
1186                         break;
1187                 }
1188
1189                 q->buffer[i]->id = i;
1190                 if (i > 0) {
1191                         q->buffer[i]->offset = q->buffer[i - 1]->offset +
1192                                 q->buffer[i - 1]->size;
1193                 } else {
1194                         q->buffer[i]->offset = 0;
1195                 }
1196
1197                 spin_lock_init(&q->buffer[i]->state_lock);
1198
1199                 dprintk("vino_queue_init(): buffer = %d, offset = %d, "
1200                         "size = %d\n", i, q->buffer[i]->offset,
1201                         q->buffer[i]->size);
1202         }
1203
1204         if (ret) {
1205                 vino_queue_free_with_count(q, i);
1206                 *length = 0;
1207         } else {
1208                 q->length = *length;
1209                 vino_fifo_init(&q->in, q->length);
1210                 vino_fifo_init(&q->out, q->length);
1211                 q->type = VINO_MEMORY_MMAP;
1212                 q->magic = VINO_QUEUE_MAGIC;
1213         }
1214
1215         mutex_unlock(&q->queue_mutex);
1216
1217         return ret;
1218 }
1219
1220 static struct vino_framebuffer *vino_queue_add(struct
1221                                                vino_framebuffer_queue *q,
1222                                                unsigned int id)
1223 {
1224         struct vino_framebuffer *ret = NULL;
1225         unsigned int total;
1226         unsigned long flags;
1227
1228         dprintk("vino_queue_add(): id = %d\n", id);
1229
1230         if (q->magic != VINO_QUEUE_MAGIC) {
1231                 return ret;
1232         }
1233
1234         spin_lock_irqsave(&q->queue_lock, flags);
1235
1236         if (q->length == 0)
1237                 goto out;
1238
1239         if (id >= q->length)
1240                 goto out;
1241
1242         /* not needed?: if (vino_fifo_full(&q->out)) {
1243                 goto out;
1244                 }*/
1245         /* check that outgoing queue isn't already full
1246          * (or that it won't become full) */
1247         total = vino_fifo_get_used(&q->in) +
1248                 vino_fifo_get_used(&q->out);
1249         if (total >= q->length)
1250                 goto out;
1251
1252         if (vino_fifo_enqueue(&q->in, id))
1253                 goto out;
1254
1255         ret = q->buffer[id];
1256
1257 out:
1258         spin_unlock_irqrestore(&q->queue_lock, flags);
1259
1260         return ret;
1261 }
1262
1263 static struct vino_framebuffer *vino_queue_transfer(struct
1264                                                     vino_framebuffer_queue *q)
1265 {
1266         struct vino_framebuffer *ret = NULL;
1267         struct vino_framebuffer *fb;
1268         int id;
1269         unsigned long flags;
1270
1271         dprintk("vino_queue_transfer():\n");
1272
1273         if (q->magic != VINO_QUEUE_MAGIC) {
1274                 return ret;
1275         }
1276
1277         spin_lock_irqsave(&q->queue_lock, flags);
1278
1279         if (q->length == 0)
1280                 goto out;
1281
1282         // now this actually removes an entry from the incoming queue
1283         if (vino_fifo_dequeue(&q->in, &id)) {
1284                 goto out;
1285         }
1286
1287         dprintk("vino_queue_transfer(): id = %d\n", id);
1288         fb = q->buffer[id];
1289
1290         // we have already checked that the outgoing queue is not full, but...
1291         if (vino_fifo_enqueue(&q->out, id)) {
1292                 printk(KERN_ERR "vino_queue_transfer(): "
1293                        "outgoing queue is full, this shouldn't happen!\n");
1294                 goto out;
1295         }
1296
1297         ret = fb;
1298 out:
1299         spin_unlock_irqrestore(&q->queue_lock, flags);
1300
1301         return ret;
1302 }
1303
1304 /* returns true/false */
1305 static int vino_queue_incoming_contains(struct vino_framebuffer_queue *q,
1306                                         unsigned int id)
1307 {
1308         int ret = 0;
1309         unsigned long flags;
1310
1311         if (q->magic != VINO_QUEUE_MAGIC) {
1312                 return ret;
1313         }
1314
1315         spin_lock_irqsave(&q->queue_lock, flags);
1316
1317         if (q->length == 0)
1318                 goto out;
1319
1320         ret = vino_fifo_has_id(&q->in, id);
1321
1322 out:
1323         spin_unlock_irqrestore(&q->queue_lock, flags);
1324
1325         return ret;
1326 }
1327
1328 /* returns true/false */
1329 static int vino_queue_outgoing_contains(struct vino_framebuffer_queue *q,
1330                                         unsigned int id)
1331 {
1332         int ret = 0;
1333         unsigned long flags;
1334
1335         if (q->magic != VINO_QUEUE_MAGIC) {
1336                 return ret;
1337         }
1338
1339         spin_lock_irqsave(&q->queue_lock, flags);
1340
1341         if (q->length == 0)
1342                 goto out;
1343
1344         ret = vino_fifo_has_id(&q->out, id);
1345
1346 out:
1347         spin_unlock_irqrestore(&q->queue_lock, flags);
1348
1349         return ret;
1350 }
1351
1352 static int vino_queue_get_incoming(struct vino_framebuffer_queue *q,
1353                                    unsigned int *used)
1354 {
1355         int ret = 0;
1356         unsigned long flags;
1357
1358         if (q->magic != VINO_QUEUE_MAGIC) {
1359                 return VINO_QUEUE_ERROR;
1360         }
1361
1362         spin_lock_irqsave(&q->queue_lock, flags);
1363
1364         if (q->length == 0) {
1365                 ret = VINO_QUEUE_ERROR;
1366                 goto out;
1367         }
1368
1369         *used = vino_fifo_get_used(&q->in);
1370
1371 out:
1372         spin_unlock_irqrestore(&q->queue_lock, flags);
1373
1374         return ret;
1375 }
1376
1377 static int vino_queue_get_outgoing(struct vino_framebuffer_queue *q,
1378                                    unsigned int *used)
1379 {
1380         int ret = 0;
1381         unsigned long flags;
1382
1383         if (q->magic != VINO_QUEUE_MAGIC) {
1384                 return VINO_QUEUE_ERROR;
1385         }
1386
1387         spin_lock_irqsave(&q->queue_lock, flags);
1388
1389         if (q->length == 0) {
1390                 ret = VINO_QUEUE_ERROR;
1391                 goto out;
1392         }
1393
1394         *used = vino_fifo_get_used(&q->out);
1395
1396 out:
1397         spin_unlock_irqrestore(&q->queue_lock, flags);
1398
1399         return ret;
1400 }
1401
1402 #if 0
1403 static int vino_queue_get_total(struct vino_framebuffer_queue *q,
1404                                 unsigned int *total)
1405 {
1406         int ret = 0;
1407         unsigned long flags;
1408
1409         if (q->magic != VINO_QUEUE_MAGIC) {
1410                 return VINO_QUEUE_ERROR;
1411         }
1412
1413         spin_lock_irqsave(&q->queue_lock, flags);
1414
1415         if (q->length == 0) {
1416                 ret = VINO_QUEUE_ERROR;
1417                 goto out;
1418         }
1419
1420         *total = vino_fifo_get_used(&q->in) +
1421                 vino_fifo_get_used(&q->out);
1422
1423 out:
1424         spin_unlock_irqrestore(&q->queue_lock, flags);
1425
1426         return ret;
1427 }
1428 #endif
1429
1430 static struct vino_framebuffer *vino_queue_peek(struct
1431                                                 vino_framebuffer_queue *q,
1432                                                 unsigned int *id)
1433 {
1434         struct vino_framebuffer *ret = NULL;
1435         unsigned long flags;
1436
1437         if (q->magic != VINO_QUEUE_MAGIC) {
1438                 return ret;
1439         }
1440
1441         spin_lock_irqsave(&q->queue_lock, flags);
1442
1443         if (q->length == 0)
1444                 goto out;
1445
1446         if (vino_fifo_peek(&q->in, id)) {
1447                 goto out;
1448         }
1449
1450         ret = q->buffer[*id];
1451 out:
1452         spin_unlock_irqrestore(&q->queue_lock, flags);
1453
1454         return ret;
1455 }
1456
1457 static struct vino_framebuffer *vino_queue_remove(struct
1458                                                   vino_framebuffer_queue *q,
1459                                                   unsigned int *id)
1460 {
1461         struct vino_framebuffer *ret = NULL;
1462         unsigned long flags;
1463         dprintk("vino_queue_remove():\n");
1464
1465         if (q->magic != VINO_QUEUE_MAGIC) {
1466                 return ret;
1467         }
1468
1469         spin_lock_irqsave(&q->queue_lock, flags);
1470
1471         if (q->length == 0)
1472                 goto out;
1473
1474         if (vino_fifo_dequeue(&q->out, id)) {
1475                 goto out;
1476         }
1477
1478         dprintk("vino_queue_remove(): id = %d\n", *id);
1479         ret = q->buffer[*id];
1480 out:
1481         spin_unlock_irqrestore(&q->queue_lock, flags);
1482
1483         return ret;
1484 }
1485
1486 static struct
1487 vino_framebuffer *vino_queue_get_buffer(struct vino_framebuffer_queue *q,
1488                                         unsigned int id)
1489 {
1490         struct vino_framebuffer *ret = NULL;
1491         unsigned long flags;
1492
1493         if (q->magic != VINO_QUEUE_MAGIC) {
1494                 return ret;
1495         }
1496
1497         spin_lock_irqsave(&q->queue_lock, flags);
1498
1499         if (q->length == 0)
1500                 goto out;
1501
1502         if (id >= q->length)
1503                 goto out;
1504
1505         ret = q->buffer[id];
1506  out:
1507         spin_unlock_irqrestore(&q->queue_lock, flags);
1508
1509         return ret;
1510 }
1511
1512 static unsigned int vino_queue_get_length(struct vino_framebuffer_queue *q)
1513 {
1514         unsigned int length = 0;
1515         unsigned long flags;
1516
1517         if (q->magic != VINO_QUEUE_MAGIC) {
1518                 return length;
1519         }
1520
1521         spin_lock_irqsave(&q->queue_lock, flags);
1522         length = q->length;
1523         spin_unlock_irqrestore(&q->queue_lock, flags);
1524
1525         return length;
1526 }
1527
1528 static int vino_queue_has_mapped_buffers(struct vino_framebuffer_queue *q)
1529 {
1530         unsigned int i;
1531         int ret = 0;
1532         unsigned long flags;
1533
1534         if (q->magic != VINO_QUEUE_MAGIC) {
1535                 return ret;
1536         }
1537
1538         spin_lock_irqsave(&q->queue_lock, flags);
1539         for (i = 0; i < q->length; i++) {
1540                 if (q->buffer[i]->map_count > 0) {
1541                         ret = 1;
1542                         break;
1543                 }
1544         }
1545         spin_unlock_irqrestore(&q->queue_lock, flags);
1546
1547         return ret;
1548 }
1549
1550 /* VINO functions */
1551
1552 /* execute with input_lock locked */
1553 static void vino_update_line_size(struct vino_channel_settings *vcs)
1554 {
1555         unsigned int w = vcs->clipping.right - vcs->clipping.left;
1556         unsigned int d = vcs->decimation;
1557         unsigned int bpp = vino_data_formats[vcs->data_format].bpp;
1558         unsigned int lsize;
1559
1560         dprintk("update_line_size(): before: w = %d, d = %d, "
1561                 "line_size = %d\n", w, d, vcs->line_size);
1562
1563         /* line size must be multiple of 8 bytes */
1564         lsize = (bpp * (w / d)) & ~7;
1565         w = (lsize / bpp) * d;
1566
1567         vcs->clipping.right = vcs->clipping.left + w;
1568         vcs->line_size = lsize;
1569
1570         dprintk("update_line_size(): after: w = %d, d = %d, "
1571                 "line_size = %d\n", w, d, vcs->line_size);
1572 }
1573
1574 /* execute with input_lock locked */
1575 static void vino_set_clipping(struct vino_channel_settings *vcs,
1576                               unsigned int x, unsigned int y,
1577                               unsigned int w, unsigned int h)
1578 {
1579         unsigned int maxwidth, maxheight;
1580         unsigned int d;
1581
1582         maxwidth = vino_data_norms[vcs->data_norm].width;
1583         maxheight = vino_data_norms[vcs->data_norm].height;
1584         d = vcs->decimation;
1585
1586         y &= ~1;        /* odd/even fields */
1587
1588         if (x > maxwidth) {
1589                 x = 0;
1590         }
1591         if (y > maxheight) {
1592                 y = 0;
1593         }
1594
1595         if (((w / d) < VINO_MIN_WIDTH)
1596             || ((h / d) < VINO_MIN_HEIGHT)) {
1597                 w = VINO_MIN_WIDTH * d;
1598                 h = VINO_MIN_HEIGHT * d;
1599         }
1600
1601         if ((x + w) > maxwidth) {
1602                 w = maxwidth - x;
1603                 if ((w / d) < VINO_MIN_WIDTH)
1604                         x = maxwidth - VINO_MIN_WIDTH * d;
1605         }
1606         if ((y + h) > maxheight) {
1607                 h = maxheight - y;
1608                 if ((h / d) < VINO_MIN_HEIGHT)
1609                         y = maxheight - VINO_MIN_HEIGHT * d;
1610         }
1611
1612         vcs->clipping.left = x;
1613         vcs->clipping.top = y;
1614         vcs->clipping.right = x + w;
1615         vcs->clipping.bottom = y + h;
1616
1617         vino_update_line_size(vcs);
1618
1619         dprintk("clipping %d, %d, %d, %d / %d - %d\n",
1620                 vcs->clipping.left, vcs->clipping.top, vcs->clipping.right,
1621                 vcs->clipping.bottom, vcs->decimation, vcs->line_size);
1622 }
1623
1624 /* execute with input_lock locked */
1625 static inline void vino_set_default_clipping(struct vino_channel_settings *vcs)
1626 {
1627         vino_set_clipping(vcs, 0, 0, vino_data_norms[vcs->data_norm].width,
1628                           vino_data_norms[vcs->data_norm].height);
1629 }
1630
1631 /* execute with input_lock locked */
1632 static void vino_set_scaling(struct vino_channel_settings *vcs,
1633                              unsigned int w, unsigned int h)
1634 {
1635         unsigned int x, y, curw, curh, d;
1636
1637         x = vcs->clipping.left;
1638         y = vcs->clipping.top;
1639         curw = vcs->clipping.right - vcs->clipping.left;
1640         curh = vcs->clipping.bottom - vcs->clipping.top;
1641
1642         d = max(curw / w, curh / h);
1643
1644         dprintk("scaling w: %d, h: %d, curw: %d, curh: %d, d: %d\n",
1645                 w, h, curw, curh, d);
1646
1647         if (d < 1) {
1648                 d = 1;
1649         } else if (d > 8) {
1650                 d = 8;
1651         }
1652
1653         vcs->decimation = d;
1654         vino_set_clipping(vcs, x, y, w * d, h * d);
1655
1656         dprintk("scaling %d, %d, %d, %d / %d - %d\n", vcs->clipping.left,
1657                 vcs->clipping.top, vcs->clipping.right, vcs->clipping.bottom,
1658                 vcs->decimation, vcs->line_size);
1659 }
1660
1661 /* execute with input_lock locked */
1662 static inline void vino_set_default_scaling(struct vino_channel_settings *vcs)
1663 {
1664         vino_set_scaling(vcs, vcs->clipping.right - vcs->clipping.left,
1665                          vcs->clipping.bottom - vcs->clipping.top);
1666 }
1667
1668 /* execute with input_lock locked */
1669 static void vino_set_framerate(struct vino_channel_settings *vcs,
1670                                unsigned int fps)
1671 {
1672         unsigned int mask;
1673
1674         switch (vcs->data_norm) {
1675         case VINO_DATA_NORM_NTSC:
1676         case VINO_DATA_NORM_D1:
1677                 fps = (unsigned int)(fps / 6) * 6; // FIXME: round!
1678
1679                 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1680                         fps = vino_data_norms[vcs->data_norm].fps_min;
1681                 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1682                         fps = vino_data_norms[vcs->data_norm].fps_max;
1683
1684                 switch (fps) {
1685                 case 6:
1686                         mask = 0x003;
1687                         break;
1688                 case 12:
1689                         mask = 0x0c3;
1690                         break;
1691                 case 18:
1692                         mask = 0x333;
1693                         break;
1694                 case 24:
1695                         mask = 0x3ff;
1696                         break;
1697                 case 30:
1698                         mask = 0xfff;
1699                         break;
1700                 default:
1701                         mask = VINO_FRAMERT_FULL;
1702                 }
1703                 vcs->framert_reg = VINO_FRAMERT_RT(mask);
1704                 break;
1705         case VINO_DATA_NORM_PAL:
1706         case VINO_DATA_NORM_SECAM:
1707                 fps = (unsigned int)(fps / 5) * 5; // FIXME: round!
1708
1709                 if (fps < vino_data_norms[vcs->data_norm].fps_min)
1710                         fps = vino_data_norms[vcs->data_norm].fps_min;
1711                 if (fps > vino_data_norms[vcs->data_norm].fps_max)
1712                         fps = vino_data_norms[vcs->data_norm].fps_max;
1713
1714                 switch (fps) {
1715                 case 5:
1716                         mask = 0x003;
1717                         break;
1718                 case 10:
1719                         mask = 0x0c3;
1720                         break;
1721                 case 15:
1722                         mask = 0x333;
1723                         break;
1724                 case 20:
1725                         mask = 0x0ff;
1726                         break;
1727                 case 25:
1728                         mask = 0x3ff;
1729                         break;
1730                 default:
1731                         mask = VINO_FRAMERT_FULL;
1732                 }
1733                 vcs->framert_reg = VINO_FRAMERT_RT(mask) | VINO_FRAMERT_PAL;
1734                 break;
1735         }
1736
1737         vcs->fps = fps;
1738 }
1739
1740 /* execute with input_lock locked */
1741 static inline void vino_set_default_framerate(struct
1742                                               vino_channel_settings *vcs)
1743 {
1744         vino_set_framerate(vcs, vino_data_norms[vcs->data_norm].fps_max);
1745 }
1746
1747 /*
1748  * Prepare VINO for DMA transfer...
1749  * (execute only with vino_lock and input_lock locked)
1750  */
1751 static int vino_dma_setup(struct vino_channel_settings *vcs,
1752                           struct vino_framebuffer *fb)
1753 {
1754         u32 ctrl, intr;
1755         struct sgi_vino_channel *ch;
1756         const struct vino_data_norm *norm;
1757
1758         dprintk("vino_dma_setup():\n");
1759
1760         vcs->field = 0;
1761         fb->frame_counter = 0;
1762
1763         ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1764         norm = &vino_data_norms[vcs->data_norm];
1765
1766         ch->page_index = 0;
1767         ch->line_count = 0;
1768
1769         /* VINO line size register is set 8 bytes less than actual */
1770         ch->line_size = vcs->line_size - 8;
1771
1772         /* let VINO know where to transfer data */
1773         ch->start_desc_tbl = fb->desc_table.dma;
1774         ch->next_4_desc = fb->desc_table.dma;
1775
1776         /* give vino time to fetch the first four descriptors, 5 usec
1777          * should be more than enough time */
1778         udelay(VINO_DESC_FETCH_DELAY);
1779
1780         dprintk("vino_dma_setup(): start desc = %08x, next 4 desc = %08x\n",
1781                 ch->start_desc_tbl, ch->next_4_desc);
1782
1783         /* set the alpha register */
1784         ch->alpha = vcs->alpha;
1785
1786         /* set clipping registers */
1787         ch->clip_start = VINO_CLIP_ODD(norm->odd.top + vcs->clipping.top / 2) |
1788                 VINO_CLIP_EVEN(norm->even.top +
1789                                vcs->clipping.top / 2) |
1790                 VINO_CLIP_X(vcs->clipping.left);
1791         ch->clip_end = VINO_CLIP_ODD(norm->odd.top +
1792                                      vcs->clipping.bottom / 2 - 1) |
1793                 VINO_CLIP_EVEN(norm->even.top +
1794                                vcs->clipping.bottom / 2 - 1) |
1795                 VINO_CLIP_X(vcs->clipping.right);
1796
1797         /* set the size of actual content in the buffer (DECIMATION !) */
1798         fb->data_size = ((vcs->clipping.right - vcs->clipping.left) /
1799                          vcs->decimation) *
1800                 ((vcs->clipping.bottom - vcs->clipping.top) /
1801                  vcs->decimation) *
1802                 vino_data_formats[vcs->data_format].bpp;
1803
1804         ch->frame_rate = vcs->framert_reg;
1805
1806         ctrl = vino->control;
1807         intr = vino->intr_status;
1808
1809         if (vcs->channel == VINO_CHANNEL_A) {
1810                 /* All interrupt conditions for this channel was cleared
1811                  * so clear the interrupt status register and enable
1812                  * interrupts */
1813                 intr &= ~VINO_INTSTAT_A;
1814                 ctrl |= VINO_CTRL_A_INT;
1815
1816                 /* enable synchronization */
1817                 ctrl |= VINO_CTRL_A_SYNC_ENBL;
1818
1819                 /* enable frame assembly */
1820                 ctrl |= VINO_CTRL_A_INTERLEAVE_ENBL;
1821
1822                 /* set decimation used */
1823                 if (vcs->decimation < 2)
1824                         ctrl &= ~VINO_CTRL_A_DEC_ENBL;
1825                 else {
1826                         ctrl |= VINO_CTRL_A_DEC_ENBL;
1827                         ctrl &= ~VINO_CTRL_A_DEC_SCALE_MASK;
1828                         ctrl |= (vcs->decimation - 1) <<
1829                                 VINO_CTRL_A_DEC_SCALE_SHIFT;
1830                 }
1831
1832                 /* select input interface */
1833                 if (vcs->input == VINO_INPUT_D1)
1834                         ctrl |= VINO_CTRL_A_SELECT;
1835                 else
1836                         ctrl &= ~VINO_CTRL_A_SELECT;
1837
1838                 /* palette */
1839                 ctrl &= ~(VINO_CTRL_A_LUMA_ONLY | VINO_CTRL_A_RGB |
1840                           VINO_CTRL_A_DITHER);
1841         } else {
1842                 intr &= ~VINO_INTSTAT_B;
1843                 ctrl |= VINO_CTRL_B_INT;
1844
1845                 ctrl |= VINO_CTRL_B_SYNC_ENBL;
1846                 ctrl |= VINO_CTRL_B_INTERLEAVE_ENBL;
1847
1848                 if (vcs->decimation < 2)
1849                         ctrl &= ~VINO_CTRL_B_DEC_ENBL;
1850                 else {
1851                         ctrl |= VINO_CTRL_B_DEC_ENBL;
1852                         ctrl &= ~VINO_CTRL_B_DEC_SCALE_MASK;
1853                         ctrl |= (vcs->decimation - 1) <<
1854                                 VINO_CTRL_B_DEC_SCALE_SHIFT;
1855
1856                 }
1857                 if (vcs->input == VINO_INPUT_D1)
1858                         ctrl |= VINO_CTRL_B_SELECT;
1859                 else
1860                         ctrl &= ~VINO_CTRL_B_SELECT;
1861
1862                 ctrl &= ~(VINO_CTRL_B_LUMA_ONLY | VINO_CTRL_B_RGB |
1863                           VINO_CTRL_B_DITHER);
1864         }
1865
1866         /* set palette */
1867         fb->data_format = vcs->data_format;
1868
1869         switch (vcs->data_format) {
1870                 case VINO_DATA_FMT_GREY:
1871                         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1872                                 VINO_CTRL_A_LUMA_ONLY : VINO_CTRL_B_LUMA_ONLY;
1873                         break;
1874                 case VINO_DATA_FMT_RGB32:
1875                         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1876                                 VINO_CTRL_A_RGB : VINO_CTRL_B_RGB;
1877                         break;
1878                 case VINO_DATA_FMT_YUV:
1879                         /* nothing needs to be done */
1880                         break;
1881                 case VINO_DATA_FMT_RGB332:
1882                         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1883                                 VINO_CTRL_A_RGB | VINO_CTRL_A_DITHER :
1884                                 VINO_CTRL_B_RGB | VINO_CTRL_B_DITHER;
1885                         break;
1886         }
1887
1888         vino->intr_status = intr;
1889         vino->control = ctrl;
1890
1891         return 0;
1892 }
1893
1894 /* (execute only with vino_lock locked) */
1895 static inline void vino_dma_start(struct vino_channel_settings *vcs)
1896 {
1897         u32 ctrl = vino->control;
1898
1899         dprintk("vino_dma_start():\n");
1900         ctrl |= (vcs->channel == VINO_CHANNEL_A) ?
1901                 VINO_CTRL_A_DMA_ENBL : VINO_CTRL_B_DMA_ENBL;
1902         vino->control = ctrl;
1903 }
1904
1905 /* (execute only with vino_lock locked) */
1906 static inline void vino_dma_stop(struct vino_channel_settings *vcs)
1907 {
1908         u32 ctrl = vino->control;
1909
1910         ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1911                 ~VINO_CTRL_A_DMA_ENBL : ~VINO_CTRL_B_DMA_ENBL;
1912         ctrl &= (vcs->channel == VINO_CHANNEL_A) ?
1913                 ~VINO_CTRL_A_INT : ~VINO_CTRL_B_INT;
1914         vino->control = ctrl;
1915         dprintk("vino_dma_stop():\n");
1916 }
1917
1918 /*
1919  * Load dummy page to descriptor registers. This prevents generating of
1920  * spurious interrupts. (execute only with vino_lock locked)
1921  */
1922 static void vino_clear_interrupt(struct vino_channel_settings *vcs)
1923 {
1924         struct sgi_vino_channel *ch;
1925
1926         ch = (vcs->channel == VINO_CHANNEL_A) ? &vino->a : &vino->b;
1927
1928         ch->page_index = 0;
1929         ch->line_count = 0;
1930
1931         ch->start_desc_tbl = vino_drvdata->dummy_desc_table.dma;
1932         ch->next_4_desc = vino_drvdata->dummy_desc_table.dma;
1933
1934         udelay(VINO_DESC_FETCH_DELAY);
1935         dprintk("channel %c clear interrupt condition\n",
1936                (vcs->channel == VINO_CHANNEL_A) ? 'A':'B');
1937 }
1938
1939 static int vino_capture(struct vino_channel_settings *vcs,
1940                         struct vino_framebuffer *fb)
1941 {
1942         int err = 0;
1943         unsigned long flags, flags2;
1944
1945         spin_lock_irqsave(&fb->state_lock, flags);
1946
1947         if (fb->state == VINO_FRAMEBUFFER_IN_USE)
1948                 err = -EBUSY;
1949         fb->state = VINO_FRAMEBUFFER_IN_USE;
1950
1951         spin_unlock_irqrestore(&fb->state_lock, flags);
1952
1953         if (err)
1954                 return err;
1955
1956         spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
1957         spin_lock_irqsave(&vino_drvdata->input_lock, flags2);
1958
1959         vino_dma_setup(vcs, fb);
1960         vino_dma_start(vcs);
1961
1962         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags2);
1963         spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
1964
1965         return err;
1966 }
1967
1968 static
1969 struct vino_framebuffer *vino_capture_enqueue(struct
1970                                               vino_channel_settings *vcs,
1971                                               unsigned int index)
1972 {
1973         struct vino_framebuffer *fb;
1974         unsigned long flags;
1975
1976         dprintk("vino_capture_enqueue():\n");
1977
1978         spin_lock_irqsave(&vcs->capture_lock, flags);
1979
1980         fb = vino_queue_add(&vcs->fb_queue, index);
1981         if (fb == NULL) {
1982                 dprintk("vino_capture_enqueue(): vino_queue_add() failed, "
1983                         "queue full?\n");
1984                 goto out;
1985         }
1986 out:
1987         spin_unlock_irqrestore(&vcs->capture_lock, flags);
1988
1989         return fb;
1990 }
1991
1992 static int vino_capture_next(struct vino_channel_settings *vcs, int start)
1993 {
1994         struct vino_framebuffer *fb;
1995         unsigned int incoming, id;
1996         int err = 0;
1997         unsigned long flags;
1998
1999         dprintk("vino_capture_next():\n");
2000
2001         spin_lock_irqsave(&vcs->capture_lock, flags);
2002
2003         if (start) {
2004                 /* start capture only if capture isn't in progress already */
2005                 if (vcs->capturing) {
2006                         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2007                         return 0;
2008                 }
2009
2010         } else {
2011                 /* capture next frame:
2012                  * stop capture if capturing is not set */
2013                 if (!vcs->capturing) {
2014                         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2015                         return 0;
2016                 }
2017         }
2018
2019         err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
2020         if (err) {
2021                 dprintk("vino_capture_next(): vino_queue_get_incoming() "
2022                         "failed\n");
2023                 err = -EINVAL;
2024                 goto out;
2025         }
2026         if (incoming == 0) {
2027                 dprintk("vino_capture_next(): no buffers available\n");
2028                 goto out;
2029         }
2030
2031         fb = vino_queue_peek(&vcs->fb_queue, &id);
2032         if (fb == NULL) {
2033                 dprintk("vino_capture_next(): vino_queue_peek() failed\n");
2034                 err = -EINVAL;
2035                 goto out;
2036         }
2037
2038         if (start) {
2039                 vcs->capturing = 1;
2040         }
2041
2042         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2043
2044         err = vino_capture(vcs, fb);
2045
2046         return err;
2047
2048 out:
2049         vcs->capturing = 0;
2050         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2051
2052         return err;
2053 }
2054
2055 static inline int vino_is_capturing(struct vino_channel_settings *vcs)
2056 {
2057         int ret;
2058         unsigned long flags;
2059
2060         spin_lock_irqsave(&vcs->capture_lock, flags);
2061
2062         ret = vcs->capturing;
2063
2064         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2065
2066         return ret;
2067 }
2068
2069 /* waits until a frame is captured */
2070 static int vino_wait_for_frame(struct vino_channel_settings *vcs)
2071 {
2072         wait_queue_t wait;
2073         int err = 0;
2074
2075         dprintk("vino_wait_for_frame():\n");
2076
2077         init_waitqueue_entry(&wait, current);
2078         /* add ourselves into wait queue */
2079         add_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2080
2081         /* to ensure that schedule_timeout will return immediately
2082          * if VINO interrupt was triggered meanwhile */
2083         schedule_timeout_interruptible(msecs_to_jiffies(100));
2084
2085         if (signal_pending(current))
2086                 err = -EINTR;
2087
2088         remove_wait_queue(&vcs->fb_queue.frame_wait_queue, &wait);
2089
2090         dprintk("vino_wait_for_frame(): waiting for frame %s\n",
2091                 err ? "failed" : "ok");
2092
2093         return err;
2094 }
2095
2096 /* the function assumes that PAGE_SIZE % 4 == 0 */
2097 static void vino_convert_to_rgba(struct vino_framebuffer *fb) {
2098         unsigned char *pageptr;
2099         unsigned int page, i;
2100         unsigned char a;
2101
2102         for (page = 0; page < fb->desc_table.page_count; page++) {
2103                 pageptr = (unsigned char *)fb->desc_table.virtual[page];
2104
2105                 for (i = 0; i < PAGE_SIZE; i += 4) {
2106                         a = pageptr[0];
2107                         pageptr[0] = pageptr[3];
2108                         pageptr[1] = pageptr[2];
2109                         pageptr[2] = pageptr[1];
2110                         pageptr[3] = a;
2111                         pageptr += 4;
2112                 }
2113         }
2114 }
2115
2116 /* checks if the buffer is in correct state and syncs data */
2117 static int vino_check_buffer(struct vino_channel_settings *vcs,
2118                              struct vino_framebuffer *fb)
2119 {
2120         int err = 0;
2121         unsigned long flags;
2122
2123         dprintk("vino_check_buffer():\n");
2124
2125         spin_lock_irqsave(&fb->state_lock, flags);
2126         switch (fb->state) {
2127         case VINO_FRAMEBUFFER_IN_USE:
2128                 err = -EIO;
2129                 break;
2130         case VINO_FRAMEBUFFER_READY:
2131                 vino_sync_buffer(fb);
2132                 fb->state = VINO_FRAMEBUFFER_UNUSED;
2133                 break;
2134         default:
2135                 err = -EINVAL;
2136         }
2137         spin_unlock_irqrestore(&fb->state_lock, flags);
2138
2139         if (!err) {
2140                 if (vino_pixel_conversion
2141                     && (fb->data_format == VINO_DATA_FMT_RGB32)) {
2142                         vino_convert_to_rgba(fb);
2143                 }
2144         } else if (err && (err != -EINVAL)) {
2145                 dprintk("vino_check_buffer(): buffer not ready\n");
2146
2147                 spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2148                 vino_dma_stop(vcs);
2149                 vino_clear_interrupt(vcs);
2150                 spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2151         }
2152
2153         return err;
2154 }
2155
2156 /* forcefully terminates capture */
2157 static void vino_capture_stop(struct vino_channel_settings *vcs)
2158 {
2159         unsigned int incoming = 0, outgoing = 0, id;
2160         unsigned long flags, flags2;
2161
2162         dprintk("vino_capture_stop():\n");
2163
2164         spin_lock_irqsave(&vcs->capture_lock, flags);
2165
2166         /* unset capturing to stop queue processing */
2167         vcs->capturing = 0;
2168
2169         spin_lock_irqsave(&vino_drvdata->vino_lock, flags2);
2170
2171         vino_dma_stop(vcs);
2172         vino_clear_interrupt(vcs);
2173
2174         spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags2);
2175
2176         /* remove all items from the queue */
2177         if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2178                 dprintk("vino_capture_stop(): "
2179                         "vino_queue_get_incoming() failed\n");
2180                 goto out;
2181         }
2182         while (incoming > 0) {
2183                 vino_queue_transfer(&vcs->fb_queue);
2184
2185                 if (vino_queue_get_incoming(&vcs->fb_queue, &incoming)) {
2186                         dprintk("vino_capture_stop(): "
2187                                 "vino_queue_get_incoming() failed\n");
2188                         goto out;
2189                 }
2190         }
2191
2192         if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2193                 dprintk("vino_capture_stop(): "
2194                         "vino_queue_get_outgoing() failed\n");
2195                 goto out;
2196         }
2197         while (outgoing > 0) {
2198                 vino_queue_remove(&vcs->fb_queue, &id);
2199
2200                 if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
2201                         dprintk("vino_capture_stop(): "
2202                                 "vino_queue_get_outgoing() failed\n");
2203                         goto out;
2204                 }
2205         }
2206
2207 out:
2208         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2209 }
2210
2211 #if 0
2212 static int vino_capture_failed(struct vino_channel_settings *vcs)
2213 {
2214         struct vino_framebuffer *fb;
2215         unsigned long flags;
2216         unsigned int i;
2217         int ret;
2218
2219         dprintk("vino_capture_failed():\n");
2220
2221         spin_lock_irqsave(&vino_drvdata->vino_lock, flags);
2222
2223         vino_dma_stop(vcs);
2224         vino_clear_interrupt(vcs);
2225
2226         spin_unlock_irqrestore(&vino_drvdata->vino_lock, flags);
2227
2228         ret = vino_queue_get_incoming(&vcs->fb_queue, &i);
2229         if (ret == VINO_QUEUE_ERROR) {
2230                 dprintk("vino_queue_get_incoming() failed\n");
2231                 return -EINVAL;
2232         }
2233         if (i == 0) {
2234                 /* no buffers to process */
2235                 return 0;
2236         }
2237
2238         fb = vino_queue_peek(&vcs->fb_queue, &i);
2239         if (fb == NULL) {
2240                 dprintk("vino_queue_peek() failed\n");
2241                 return -EINVAL;
2242         }
2243
2244         spin_lock_irqsave(&fb->state_lock, flags);
2245         if (fb->state == VINO_FRAMEBUFFER_IN_USE) {
2246                 fb->state = VINO_FRAMEBUFFER_UNUSED;
2247                 vino_queue_transfer(&vcs->fb_queue);
2248                 vino_queue_remove(&vcs->fb_queue, &i);
2249                 /* we should actually discard the newest frame,
2250                  * but who cares ... */
2251         }
2252         spin_unlock_irqrestore(&fb->state_lock, flags);
2253
2254         return 0;
2255 }
2256 #endif
2257
2258 static void vino_skip_frame(struct vino_channel_settings *vcs)
2259 {
2260         struct vino_framebuffer *fb;
2261         unsigned long flags;
2262         unsigned int id;
2263
2264         spin_lock_irqsave(&vcs->capture_lock, flags);
2265         fb = vino_queue_peek(&vcs->fb_queue, &id);
2266         if (!fb) {
2267                 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2268                 dprintk("vino_skip_frame(): vino_queue_peek() failed!\n");
2269                 return;
2270         }
2271         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2272
2273         spin_lock_irqsave(&fb->state_lock, flags);
2274         fb->state = VINO_FRAMEBUFFER_UNUSED;
2275         spin_unlock_irqrestore(&fb->state_lock, flags);
2276
2277         vino_capture_next(vcs, 0);
2278 }
2279
2280 static void vino_frame_done(struct vino_channel_settings *vcs)
2281 {
2282         struct vino_framebuffer *fb;
2283         unsigned long flags;
2284
2285         spin_lock_irqsave(&vcs->capture_lock, flags);
2286         fb = vino_queue_transfer(&vcs->fb_queue);
2287         if (!fb) {
2288                 spin_unlock_irqrestore(&vcs->capture_lock, flags);
2289                 dprintk("vino_frame_done(): vino_queue_transfer() failed!\n");
2290                 return;
2291         }
2292         spin_unlock_irqrestore(&vcs->capture_lock, flags);
2293
2294         fb->frame_counter = vcs->int_data.frame_counter;
2295         memcpy(&fb->timestamp, &vcs->int_data.timestamp,
2296                sizeof(struct timeval));
2297
2298         spin_lock_irqsave(&fb->state_lock, flags);
2299         if (fb->state == VINO_FRAMEBUFFER_IN_USE)
2300                 fb->state = VINO_FRAMEBUFFER_READY;
2301         spin_unlock_irqrestore(&fb->state_lock, flags);
2302
2303         wake_up(&vcs->fb_queue.frame_wait_queue);
2304
2305         vino_capture_next(vcs, 0);
2306 }
2307
2308 static void vino_capture_tasklet(unsigned long channel) {
2309         struct vino_channel_settings *vcs;
2310
2311         vcs = (channel == VINO_CHANNEL_A)
2312                 ? &vino_drvdata->a : &vino_drvdata->b;
2313
2314         if (vcs->int_data.skip)
2315                 vcs->int_data.skip_count++;
2316
2317         if (vcs->int_data.skip && (vcs->int_data.skip_count
2318                                    <= VINO_MAX_FRAME_SKIP_COUNT)) {
2319                 vino_skip_frame(vcs);
2320         } else {
2321                 vcs->int_data.skip_count = 0;
2322                 vino_frame_done(vcs);
2323         }
2324 }
2325
2326 static irqreturn_t vino_interrupt(int irq, void *dev_id)
2327 {
2328         u32 ctrl, intr;
2329         unsigned int fc_a, fc_b;
2330         int handled_a = 0, skip_a = 0, done_a = 0;
2331         int handled_b = 0, skip_b = 0, done_b = 0;
2332
2333 #ifdef VINO_DEBUG_INT
2334         int loop = 0;
2335         unsigned int line_count = vino->a.line_count,
2336                 page_index = vino->a.page_index,
2337                 field_counter = vino->a.field_counter,
2338                 start_desc_tbl = vino->a.start_desc_tbl,
2339                 next_4_desc = vino->a.next_4_desc;
2340         unsigned int line_count_2,
2341                 page_index_2,
2342                 field_counter_2,
2343                 start_desc_tbl_2,
2344                 next_4_desc_2;
2345 #endif
2346
2347         spin_lock(&vino_drvdata->vino_lock);
2348
2349         while ((intr = vino->intr_status)) {
2350                 fc_a = vino->a.field_counter >> 1;
2351                 fc_b = vino->b.field_counter >> 1;
2352
2353                 /* handle error-interrupts in some special way ?
2354                  * --> skips frames */
2355                 if (intr & VINO_INTSTAT_A) {
2356                         if (intr & VINO_INTSTAT_A_EOF) {
2357                                 vino_drvdata->a.field++;
2358                                 if (vino_drvdata->a.field > 1) {
2359                                         vino_dma_stop(&vino_drvdata->a);
2360                                         vino_clear_interrupt(&vino_drvdata->a);
2361                                         vino_drvdata->a.field = 0;
2362                                         done_a = 1;
2363                                 } else {
2364                                         if (vino->a.page_index
2365                                             != vino_drvdata->a.line_size) {
2366                                                 vino->a.line_count = 0;
2367                                                 vino->a.page_index =
2368                                                         vino_drvdata->
2369                                                         a.line_size;
2370                                                 vino->a.next_4_desc =
2371                                                         vino->a.start_desc_tbl;
2372                                         }
2373                                 }
2374                                 dprintk("channel A end-of-field "
2375                                         "interrupt: %04x\n", intr);
2376                         } else {
2377                                 vino_dma_stop(&vino_drvdata->a);
2378                                 vino_clear_interrupt(&vino_drvdata->a);
2379                                 vino_drvdata->a.field = 0;
2380                                 skip_a = 1;
2381                                 dprintk("channel A error interrupt: %04x\n",
2382                                         intr);
2383                         }
2384
2385 #ifdef VINO_DEBUG_INT
2386                         line_count_2 = vino->a.line_count;
2387                         page_index_2 = vino->a.page_index;
2388                         field_counter_2 = vino->a.field_counter;
2389                         start_desc_tbl_2 = vino->a.start_desc_tbl;
2390                         next_4_desc_2 = vino->a.next_4_desc;
2391
2392                         printk("intr = %04x, loop = %d, field = %d\n",
2393                                intr, loop, vino_drvdata->a.field);
2394                         printk("1- line count = %04d, page index = %04d, "
2395                                "start = %08x, next = %08x\n"
2396                                "   fieldc = %d, framec = %d\n",
2397                                line_count, page_index, start_desc_tbl,
2398                                next_4_desc, field_counter, fc_a);
2399                         printk("12-line count = %04d, page index = %04d, "
2400                                "   start = %08x, next = %08x\n",
2401                                line_count_2, page_index_2, start_desc_tbl_2,
2402                                next_4_desc_2);
2403
2404                         if (done_a)
2405                                 printk("\n");
2406 #endif
2407                 }
2408
2409                 if (intr & VINO_INTSTAT_B) {
2410                         if (intr & VINO_INTSTAT_B_EOF) {
2411                                 vino_drvdata->b.field++;
2412                                 if (vino_drvdata->b.field > 1) {
2413                                         vino_dma_stop(&vino_drvdata->b);
2414                                         vino_clear_interrupt(&vino_drvdata->b);
2415                                         vino_drvdata->b.field = 0;
2416                                         done_b = 1;
2417                                 }
2418                                 dprintk("channel B end-of-field "
2419                                         "interrupt: %04x\n", intr);
2420                         } else {
2421                                 vino_dma_stop(&vino_drvdata->b);
2422                                 vino_clear_interrupt(&vino_drvdata->b);
2423                                 vino_drvdata->b.field = 0;
2424                                 skip_b = 1;
2425                                 dprintk("channel B error interrupt: %04x\n",
2426                                         intr);
2427                         }
2428                 }
2429
2430                 /* Always remember to clear interrupt status.
2431                  * Disable VINO interrupts while we do this. */
2432                 ctrl = vino->control;
2433                 vino->control = ctrl & ~(VINO_CTRL_A_INT | VINO_CTRL_B_INT);
2434                 vino->intr_status = ~intr;
2435                 vino->control = ctrl;
2436
2437                 spin_unlock(&vino_drvdata->vino_lock);
2438
2439                 if ((!handled_a) && (done_a || skip_a)) {
2440                         if (!skip_a) {
2441                                 do_gettimeofday(&vino_drvdata->
2442                                                 a.int_data.timestamp);
2443                                 vino_drvdata->a.int_data.frame_counter = fc_a;
2444                         }
2445                         vino_drvdata->a.int_data.skip = skip_a;
2446
2447                         dprintk("channel A %s, interrupt: %d\n",
2448                                 skip_a ? "skipping frame" : "frame done",
2449                                 intr);
2450                         tasklet_hi_schedule(&vino_tasklet_a);
2451                         handled_a = 1;
2452                 }
2453
2454                 if ((!handled_b) && (done_b || skip_b)) {
2455                         if (!skip_b) {
2456                                 do_gettimeofday(&vino_drvdata->
2457                                                 b.int_data.timestamp);
2458                                 vino_drvdata->b.int_data.frame_counter = fc_b;
2459                         }
2460                         vino_drvdata->b.int_data.skip = skip_b;
2461
2462                         dprintk("channel B %s, interrupt: %d\n",
2463                                 skip_b ? "skipping frame" : "frame done",
2464                                 intr);
2465                         tasklet_hi_schedule(&vino_tasklet_b);
2466                         handled_b = 1;
2467                 }
2468
2469 #ifdef VINO_DEBUG_INT
2470                 loop++;
2471 #endif
2472                 spin_lock(&vino_drvdata->vino_lock);
2473         }
2474
2475         spin_unlock(&vino_drvdata->vino_lock);
2476
2477         return IRQ_HANDLED;
2478 }
2479
2480 /* VINO video input management */
2481
2482 static int vino_get_saa7191_input(int input)
2483 {
2484         switch (input) {
2485         case VINO_INPUT_COMPOSITE:
2486                 return SAA7191_INPUT_COMPOSITE;
2487         case VINO_INPUT_SVIDEO:
2488                 return SAA7191_INPUT_SVIDEO;
2489         default:
2490                 printk(KERN_ERR "VINO: vino_get_saa7191_input(): "
2491                        "invalid input!\n");
2492                 return -1;
2493         }
2494 }
2495
2496 static int vino_get_saa7191_norm(unsigned int data_norm)
2497 {
2498         switch (data_norm) {
2499         case VINO_DATA_NORM_AUTO:
2500                 return SAA7191_NORM_AUTO;
2501         case VINO_DATA_NORM_AUTO_EXT:
2502                 return SAA7191_NORM_AUTO_EXT;
2503         case VINO_DATA_NORM_PAL:
2504                 return SAA7191_NORM_PAL;
2505         case VINO_DATA_NORM_NTSC:
2506                 return SAA7191_NORM_NTSC;
2507         case VINO_DATA_NORM_SECAM:
2508                 return SAA7191_NORM_SECAM;
2509         default:
2510                 printk(KERN_ERR "VINO: vino_get_saa7191_norm(): "
2511                        "invalid norm!\n");
2512                 return -1;
2513         }
2514 }
2515
2516 static int vino_get_from_saa7191_norm(int saa7191_norm)
2517 {
2518         switch (saa7191_norm) {
2519         case SAA7191_NORM_PAL:
2520                 return VINO_DATA_NORM_PAL;
2521         case SAA7191_NORM_NTSC:
2522                 return VINO_DATA_NORM_NTSC;
2523         case SAA7191_NORM_SECAM:
2524                 return VINO_DATA_NORM_SECAM;
2525         default:
2526                 printk(KERN_ERR "VINO: vino_get_from_saa7191_norm(): "
2527                        "invalid norm!\n");
2528                 return VINO_DATA_NORM_NONE;
2529         }
2530 }
2531
2532 static int vino_saa7191_set_norm(unsigned int *data_norm)
2533 {
2534         int saa7191_norm, new_data_norm;
2535         int err = 0;
2536
2537         saa7191_norm = vino_get_saa7191_norm(*data_norm);
2538
2539         err = i2c_decoder_command(DECODER_SAA7191_SET_NORM,
2540                                   &saa7191_norm);
2541         if (err)
2542                 goto out;
2543
2544         if ((*data_norm == VINO_DATA_NORM_AUTO)
2545             || (*data_norm == VINO_DATA_NORM_AUTO_EXT)) {
2546                 struct saa7191_status status;
2547
2548                 err = i2c_decoder_command(DECODER_SAA7191_GET_STATUS,
2549                                           &status);
2550                 if (err)
2551                         goto out;
2552
2553                 new_data_norm =
2554                         vino_get_from_saa7191_norm(status.norm);
2555                 if (new_data_norm == VINO_DATA_NORM_NONE) {
2556                         err = -EINVAL;
2557                         goto out;
2558                 }
2559
2560                 *data_norm = (unsigned int)new_data_norm;
2561         }
2562
2563 out:
2564         return err;
2565 }
2566
2567 /* execute with input_lock locked */
2568 static int vino_is_input_owner(struct vino_channel_settings *vcs)
2569 {
2570         switch(vcs->input) {
2571         case VINO_INPUT_COMPOSITE:
2572         case VINO_INPUT_SVIDEO:
2573                 return (vino_drvdata->decoder.owner == vcs->channel);
2574         case VINO_INPUT_D1:
2575                 return (vino_drvdata->camera.owner == vcs->channel);
2576         default:
2577                 return 0;
2578         }
2579 }
2580
2581 static int vino_acquire_input(struct vino_channel_settings *vcs)
2582 {
2583         unsigned long flags;
2584         int ret = 0;
2585
2586         dprintk("vino_acquire_input():\n");
2587
2588         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2589
2590         /* First try D1 and then SAA7191 */
2591         if (vino_drvdata->camera.driver
2592             && (vino_drvdata->camera.owner == VINO_NO_CHANNEL)) {
2593                 i2c_use_client(vino_drvdata->camera.driver);
2594                 vino_drvdata->camera.owner = vcs->channel;
2595                 vcs->input = VINO_INPUT_D1;
2596                 vcs->data_norm = VINO_DATA_NORM_D1;
2597         } else if (vino_drvdata->decoder.driver
2598                    && (vino_drvdata->decoder.owner == VINO_NO_CHANNEL)) {
2599                 int input, data_norm;
2600                 int saa7191_input;
2601
2602                 i2c_use_client(vino_drvdata->decoder.driver);
2603                 input = VINO_INPUT_COMPOSITE;
2604
2605                 saa7191_input = vino_get_saa7191_input(input);
2606                 ret = i2c_decoder_command(DECODER_SET_INPUT,
2607                                           &saa7191_input);
2608                 if (ret) {
2609                         ret = -EINVAL;
2610                         goto out;
2611                 }
2612
2613                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2614
2615                 /* Don't hold spinlocks while auto-detecting norm
2616                  * as it may take a while... */
2617
2618                 data_norm = VINO_DATA_NORM_AUTO_EXT;
2619
2620                 ret = vino_saa7191_set_norm(&data_norm);
2621                 if ((ret == -EBUSY) || (ret == -EAGAIN)) {
2622                         data_norm = VINO_DATA_NORM_PAL;
2623                         ret = vino_saa7191_set_norm(&data_norm);
2624                 }
2625
2626                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2627
2628                 if (ret) {
2629                         ret = -EINVAL;
2630                         goto out;
2631                 }
2632
2633                 vino_drvdata->decoder.owner = vcs->channel;
2634
2635                 vcs->input = input;
2636                 vcs->data_norm = data_norm;
2637         } else {
2638                 vcs->input = (vcs->channel == VINO_CHANNEL_A) ?
2639                         vino_drvdata->b.input : vino_drvdata->a.input;
2640                 vcs->data_norm = (vcs->channel == VINO_CHANNEL_A) ?
2641                         vino_drvdata->b.data_norm : vino_drvdata->a.data_norm;
2642         }
2643
2644         if (vcs->input == VINO_INPUT_NONE) {
2645                 ret = -ENODEV;
2646                 goto out;
2647         }
2648
2649         vino_set_default_clipping(vcs);
2650         vino_set_default_scaling(vcs);
2651         vino_set_default_framerate(vcs);
2652
2653         dprintk("vino_acquire_input(): %s\n", vino_inputs[vcs->input].name);
2654
2655 out:
2656         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2657
2658         return ret;
2659 }
2660
2661 static int vino_set_input(struct vino_channel_settings *vcs, int input)
2662 {
2663         struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2664                 &vino_drvdata->b : &vino_drvdata->a;
2665         unsigned long flags;
2666         int ret = 0;
2667
2668         dprintk("vino_set_input():\n");
2669
2670         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2671
2672         if (vcs->input == input)
2673                 goto out;
2674
2675         switch (input) {
2676         case VINO_INPUT_COMPOSITE:
2677         case VINO_INPUT_SVIDEO:
2678                 if (!vino_drvdata->decoder.driver) {
2679                         ret = -EINVAL;
2680                         goto out;
2681                 }
2682
2683                 if (vino_drvdata->decoder.owner == VINO_NO_CHANNEL) {
2684                         i2c_use_client(vino_drvdata->decoder.driver);
2685                         vino_drvdata->decoder.owner = vcs->channel;
2686                 }
2687
2688                 if (vino_drvdata->decoder.owner == vcs->channel) {
2689                         int data_norm;
2690                         int saa7191_input;
2691
2692                         saa7191_input = vino_get_saa7191_input(input);
2693                         ret = i2c_decoder_command(DECODER_SET_INPUT,
2694                                                   &saa7191_input);
2695                         if (ret) {
2696                                 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2697                                 ret = -EINVAL;
2698                                 goto out;
2699                         }
2700
2701                         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2702
2703                         /* Don't hold spinlocks while auto-detecting norm
2704                          * as it may take a while... */
2705
2706                         data_norm = VINO_DATA_NORM_AUTO_EXT;
2707
2708                         ret = vino_saa7191_set_norm(&data_norm);
2709                         if ((ret  == -EBUSY) || (ret == -EAGAIN)) {
2710                                 data_norm = VINO_DATA_NORM_PAL;
2711                                 ret = vino_saa7191_set_norm(&data_norm);
2712                         }
2713
2714                         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2715
2716                         if (ret) {
2717                                 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2718                                 ret = -EINVAL;
2719                                 goto out;
2720                         }
2721
2722                         vcs->input = input;
2723                         vcs->data_norm = data_norm;
2724                 } else {
2725                         if (input != vcs2->input) {
2726                                 ret = -EBUSY;
2727                                 goto out;
2728                         }
2729
2730                         vcs->input = input;
2731                         vcs->data_norm = vcs2->data_norm;
2732                 }
2733
2734                 if (vino_drvdata->camera.owner == vcs->channel) {
2735                         /* Transfer the ownership or release the input */
2736                         if (vcs2->input == VINO_INPUT_D1) {
2737                                 vino_drvdata->camera.owner = vcs2->channel;
2738                         } else {
2739                                 i2c_release_client(vino_drvdata->
2740                                                    camera.driver);
2741                                 vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2742                         }
2743                 }
2744                 break;
2745         case VINO_INPUT_D1:
2746                 if (!vino_drvdata->camera.driver) {
2747                         ret = -EINVAL;
2748                         goto out;
2749                 }
2750
2751                 if (vino_drvdata->camera.owner == VINO_NO_CHANNEL) {
2752                         i2c_use_client(vino_drvdata->camera.driver);
2753                         vino_drvdata->camera.owner = vcs->channel;
2754                 }
2755
2756                 if (vino_drvdata->decoder.owner == vcs->channel) {
2757                         /* Transfer the ownership or release the input */
2758                         if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2759                                  (vcs2->input == VINO_INPUT_SVIDEO)) {
2760                                 vino_drvdata->decoder.owner = vcs2->channel;
2761                         } else {
2762                                 i2c_release_client(vino_drvdata->
2763                                                    decoder.driver);
2764                                 vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2765                         }
2766                 }
2767
2768                 vcs->input = input;
2769                 vcs->data_norm = VINO_DATA_NORM_D1;
2770                 break;
2771         default:
2772                 ret = -EINVAL;
2773                 goto out;
2774         }
2775
2776         vino_set_default_clipping(vcs);
2777         vino_set_default_scaling(vcs);
2778         vino_set_default_framerate(vcs);
2779
2780         dprintk("vino_set_input(): %s\n", vino_inputs[vcs->input].name);
2781
2782 out:
2783         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2784
2785         return ret;
2786 }
2787
2788 static void vino_release_input(struct vino_channel_settings *vcs)
2789 {
2790         struct vino_channel_settings *vcs2 = (vcs->channel == VINO_CHANNEL_A) ?
2791                 &vino_drvdata->b : &vino_drvdata->a;
2792         unsigned long flags;
2793
2794         dprintk("vino_release_input():\n");
2795
2796         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2797
2798         /* Release ownership of the channel
2799          * and if the other channel takes input from
2800          * the same source, transfer the ownership */
2801         if (vino_drvdata->camera.owner == vcs->channel) {
2802                 if (vcs2->input == VINO_INPUT_D1) {
2803                         vino_drvdata->camera.owner = vcs2->channel;
2804                 } else {
2805                         i2c_release_client(vino_drvdata->camera.driver);
2806                         vino_drvdata->camera.owner = VINO_NO_CHANNEL;
2807                 }
2808         } else if (vino_drvdata->decoder.owner == vcs->channel) {
2809                 if ((vcs2->input == VINO_INPUT_COMPOSITE) ||
2810                          (vcs2->input == VINO_INPUT_SVIDEO)) {
2811                         vino_drvdata->decoder.owner = vcs2->channel;
2812                 } else {
2813                         i2c_release_client(vino_drvdata->decoder.driver);
2814                         vino_drvdata->decoder.owner = VINO_NO_CHANNEL;
2815                 }
2816         }
2817         vcs->input = VINO_INPUT_NONE;
2818
2819         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2820 }
2821
2822 /* execute with input_lock locked */
2823 static int vino_set_data_norm(struct vino_channel_settings *vcs,
2824                               unsigned int data_norm,
2825                               unsigned long *flags)
2826 {
2827         int err = 0;
2828
2829         if (data_norm == vcs->data_norm)
2830                 return 0;
2831
2832         switch (vcs->input) {
2833         case VINO_INPUT_D1:
2834                 /* only one "norm" supported */
2835                 if ((data_norm != VINO_DATA_NORM_D1)
2836                     && (data_norm != VINO_DATA_NORM_AUTO)
2837                     && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2838                         return -EINVAL;
2839                 break;
2840         case VINO_INPUT_COMPOSITE:
2841         case VINO_INPUT_SVIDEO: {
2842                 if ((data_norm != VINO_DATA_NORM_PAL)
2843                     && (data_norm != VINO_DATA_NORM_NTSC)
2844                     && (data_norm != VINO_DATA_NORM_SECAM)
2845                     && (data_norm != VINO_DATA_NORM_AUTO)
2846                     && (data_norm != VINO_DATA_NORM_AUTO_EXT))
2847                         return -EINVAL;
2848
2849                 spin_unlock_irqrestore(&vino_drvdata->input_lock, *flags);
2850
2851                 /* Don't hold spinlocks while setting norm
2852                  * as it may take a while... */
2853
2854                 err = vino_saa7191_set_norm(&data_norm);
2855
2856                 spin_lock_irqsave(&vino_drvdata->input_lock, *flags);
2857
2858                 if (err)
2859                         goto out;
2860
2861                 vcs->data_norm = data_norm;
2862
2863                 vino_set_default_clipping(vcs);
2864                 vino_set_default_scaling(vcs);
2865                 vino_set_default_framerate(vcs);
2866                 break;
2867         }
2868         default:
2869                 return -EINVAL;
2870         }
2871
2872 out:
2873         return err;
2874 }
2875
2876 /* V4L2 helper functions */
2877
2878 static int vino_find_data_format(__u32 pixelformat)
2879 {
2880         int i;
2881
2882         for (i = 0; i < VINO_DATA_FMT_COUNT; i++) {
2883                 if (vino_data_formats[i].pixelformat == pixelformat)
2884                         return i;
2885         }
2886
2887         return VINO_DATA_FMT_NONE;
2888 }
2889
2890 static int vino_enum_data_norm(struct vino_channel_settings *vcs, __u32 index)
2891 {
2892         int data_norm = VINO_DATA_NORM_NONE;
2893         unsigned long flags;
2894
2895         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2896         switch(vcs->input) {
2897         case VINO_INPUT_COMPOSITE:
2898         case VINO_INPUT_SVIDEO:
2899                 if (index == 0) {
2900                         data_norm = VINO_DATA_NORM_PAL;
2901                 } else if (index == 1) {
2902                         data_norm = VINO_DATA_NORM_NTSC;
2903                 } else if (index == 2) {
2904                         data_norm = VINO_DATA_NORM_SECAM;
2905                 }
2906                 break;
2907         case VINO_INPUT_D1:
2908                 if (index == 0) {
2909                         data_norm = VINO_DATA_NORM_D1;
2910                 }
2911                 break;
2912         }
2913         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2914
2915         return data_norm;
2916 }
2917
2918 static int vino_enum_input(struct vino_channel_settings *vcs, __u32 index)
2919 {
2920         int input = VINO_INPUT_NONE;
2921         unsigned long flags;
2922
2923         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
2924         if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2925                 switch (index) {
2926                 case 0:
2927                         input = VINO_INPUT_COMPOSITE;
2928                         break;
2929                 case 1:
2930                         input = VINO_INPUT_SVIDEO;
2931                         break;
2932                 case 2:
2933                         input = VINO_INPUT_D1;
2934                         break;
2935                 }
2936         } else if (vino_drvdata->decoder.driver) {
2937                 switch (index) {
2938                 case 0:
2939                         input = VINO_INPUT_COMPOSITE;
2940                         break;
2941                 case 1:
2942                         input = VINO_INPUT_SVIDEO;
2943                         break;
2944                 }
2945         } else if (vino_drvdata->camera.driver) {
2946                 switch (index) {
2947                 case 0:
2948                         input = VINO_INPUT_D1;
2949                         break;
2950                 }
2951         }
2952         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
2953
2954         return input;
2955 }
2956
2957 /* execute with input_lock locked */
2958 static __u32 vino_find_input_index(struct vino_channel_settings *vcs)
2959 {
2960         __u32 index = 0;
2961         // FIXME: detect when no inputs available
2962
2963         if (vino_drvdata->decoder.driver && vino_drvdata->camera.driver) {
2964                 switch (vcs->input) {
2965                 case VINO_INPUT_COMPOSITE:
2966                         index = 0;
2967                         break;
2968                 case VINO_INPUT_SVIDEO:
2969                         index = 1;
2970                         break;
2971                 case VINO_INPUT_D1:
2972                         index = 2;
2973                         break;
2974                 }
2975         } else if (vino_drvdata->decoder.driver) {
2976                 switch (vcs->input) {
2977                 case VINO_INPUT_COMPOSITE:
2978                         index = 0;
2979                         break;
2980                 case VINO_INPUT_SVIDEO:
2981                         index = 1;
2982                         break;
2983                 }
2984         } else if (vino_drvdata->camera.driver) {
2985                 switch (vcs->input) {
2986                 case VINO_INPUT_D1:
2987                         index = 0;
2988                         break;
2989                 }
2990         }
2991
2992         return index;
2993 }
2994
2995 /* V4L2 ioctls */
2996
2997 static void vino_v4l2_querycap(struct v4l2_capability *cap)
2998 {
2999         memset(cap, 0, sizeof(struct v4l2_capability));
3000
3001         strcpy(cap->driver, vino_driver_name);
3002         strcpy(cap->card, vino_driver_description);
3003         strcpy(cap->bus_info, vino_bus_name);
3004         cap->version = VINO_VERSION_CODE;
3005         cap->capabilities =
3006                 V4L2_CAP_VIDEO_CAPTURE |
3007                 V4L2_CAP_STREAMING;
3008         // V4L2_CAP_OVERLAY, V4L2_CAP_READWRITE
3009 }
3010
3011 static int vino_v4l2_enuminput(struct vino_channel_settings *vcs,
3012                                struct v4l2_input *i)
3013 {
3014         __u32 index = i->index;
3015         int input;
3016         dprintk("requested index = %d\n", index);
3017
3018         input = vino_enum_input(vcs, index);
3019         if (input == VINO_INPUT_NONE)
3020                 return -EINVAL;
3021
3022         memset(i, 0, sizeof(struct v4l2_input));
3023
3024         i->index = index;
3025         i->type = V4L2_INPUT_TYPE_CAMERA;
3026         i->std = vino_inputs[input].std;
3027         strcpy(i->name, vino_inputs[input].name);
3028
3029         if ((input == VINO_INPUT_COMPOSITE)
3030             || (input == VINO_INPUT_SVIDEO)) {
3031                 struct saa7191_status status;
3032                 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3033                 i->status |= status.signal ? 0 : V4L2_IN_ST_NO_SIGNAL;
3034                 i->status |= status.color ? 0 : V4L2_IN_ST_NO_COLOR;
3035         }
3036
3037         return 0;
3038 }
3039
3040 static int vino_v4l2_g_input(struct vino_channel_settings *vcs,
3041                              unsigned int *i)
3042 {
3043         __u32 index;
3044         int input;
3045         unsigned long flags;
3046
3047         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3048         input = vcs->input;
3049         index = vino_find_input_index(vcs);
3050         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3051
3052         dprintk("input = %d\n", input);
3053
3054         if (input == VINO_INPUT_NONE) {
3055                 return -EINVAL;
3056         }
3057
3058         *i = index;
3059
3060         return 0;
3061 }
3062
3063 static int vino_v4l2_s_input(struct vino_channel_settings *vcs,
3064                              unsigned int *i)
3065 {
3066         int input;
3067         dprintk("requested input = %d\n", *i);
3068
3069         input = vino_enum_input(vcs, *i);
3070         if (input == VINO_INPUT_NONE)
3071                 return -EINVAL;
3072
3073         return vino_set_input(vcs, input);
3074 }
3075
3076 static int vino_v4l2_enumstd(struct vino_channel_settings *vcs,
3077                              struct v4l2_standard *s)
3078 {
3079         int index = s->index;
3080         int data_norm;
3081
3082         data_norm = vino_enum_data_norm(vcs, index);
3083         dprintk("standard index = %d\n", index);
3084
3085         if (data_norm == VINO_DATA_NORM_NONE)
3086                 return -EINVAL;
3087
3088         dprintk("standard name = %s\n",
3089                vino_data_norms[data_norm].description);
3090
3091         memset(s, 0, sizeof(struct v4l2_standard));
3092         s->index = index;
3093
3094         s->id = vino_data_norms[data_norm].std;
3095         s->frameperiod.numerator = 1;
3096         s->frameperiod.denominator =
3097                 vino_data_norms[data_norm].fps_max;
3098         s->framelines =
3099                 vino_data_norms[data_norm].framelines;
3100         strcpy(s->name,
3101                vino_data_norms[data_norm].description);
3102
3103         return 0;
3104 }
3105
3106 static int vino_v4l2_querystd(struct vino_channel_settings *vcs,
3107                               v4l2_std_id *std)
3108 {
3109         unsigned long flags;
3110         int err = 0;
3111
3112         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3113
3114         switch (vcs->input) {
3115         case VINO_INPUT_D1:
3116                 *std = vino_inputs[vcs->input].std;
3117                 break;
3118         case VINO_INPUT_COMPOSITE:
3119         case VINO_INPUT_SVIDEO: {
3120                 struct saa7191_status status;
3121
3122                 i2c_decoder_command(DECODER_SAA7191_GET_STATUS, &status);
3123
3124                 if (status.signal) {
3125                         if (status.signal_60hz) {
3126                                 *std = V4L2_STD_NTSC;
3127                         } else {
3128                                 *std = V4L2_STD_PAL | V4L2_STD_SECAM;
3129                         }
3130                 } else {
3131                         *std = vino_inputs[vcs->input].std;
3132                 }
3133                 break;
3134         }
3135         default:
3136                 err = -EINVAL;
3137         }
3138
3139         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3140
3141         return err;
3142 }
3143
3144 static int vino_v4l2_g_std(struct vino_channel_settings *vcs,
3145                            v4l2_std_id *std)
3146 {
3147         unsigned long flags;
3148
3149         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3150
3151         *std = vino_data_norms[vcs->data_norm].std;
3152         dprintk("current standard = %d\n", vcs->data_norm);
3153
3154         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3155
3156         return 0;
3157 }
3158
3159 static int vino_v4l2_s_std(struct vino_channel_settings *vcs,
3160                            v4l2_std_id *std)
3161 {
3162         unsigned long flags;
3163         int ret = 0;
3164
3165         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3166
3167         if (!vino_is_input_owner(vcs)) {
3168                 ret = -EBUSY;
3169                 goto out;
3170         }
3171
3172         /* check if the standard is valid for the current input */
3173         if ((*std) & vino_inputs[vcs->input].std) {
3174                 dprintk("standard accepted\n");
3175
3176                 /* change the video norm for SAA7191
3177                  * and accept NTSC for D1 (do nothing) */
3178
3179                 if (vcs->input == VINO_INPUT_D1)
3180                         goto out;
3181
3182                 if (((*std) & V4L2_STD_PAL)
3183                     && ((*std) & V4L2_STD_NTSC)
3184                     && ((*std) & V4L2_STD_SECAM)) {
3185                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_AUTO_EXT,
3186                                                  &flags);
3187                 } else if ((*std) & V4L2_STD_PAL) {
3188                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_PAL,
3189                                                  &flags);
3190                 } else if ((*std) & V4L2_STD_NTSC) {
3191                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_NTSC,
3192                                                  &flags);
3193                 } else if ((*std) & V4L2_STD_SECAM) {
3194                         ret = vino_set_data_norm(vcs, VINO_DATA_NORM_SECAM,
3195                                                  &flags);
3196                 } else {
3197                         ret = -EINVAL;
3198                 }
3199
3200                 if (ret) {
3201                         ret = -EINVAL;
3202                 }
3203         } else {
3204                 ret = -EINVAL;
3205         }
3206
3207 out:
3208         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3209
3210         return ret;
3211 }
3212
3213 static int vino_v4l2_enum_fmt(struct vino_channel_settings *vcs,
3214                               struct v4l2_fmtdesc *fd)
3215 {
3216         enum v4l2_buf_type type = fd->type;
3217         int index = fd->index;
3218         dprintk("format index = %d\n", index);
3219
3220         switch (fd->type) {
3221         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3222                 if ((fd->index < 0) ||
3223                     (fd->index >= VINO_DATA_FMT_COUNT))
3224                         return -EINVAL;
3225                 dprintk("format name = %s\n",
3226                        vino_data_formats[index].description);
3227
3228                 memset(fd, 0, sizeof(struct v4l2_fmtdesc));
3229                 fd->index = index;
3230                 fd->type = type;
3231                 fd->pixelformat = vino_data_formats[index].pixelformat;
3232                 strcpy(fd->description, vino_data_formats[index].description);
3233                 break;
3234         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3235         default:
3236                 return -EINVAL;
3237         }
3238
3239         return 0;
3240 }
3241
3242 static int vino_v4l2_try_fmt(struct vino_channel_settings *vcs,
3243                              struct v4l2_format *f)
3244 {
3245         struct vino_channel_settings tempvcs;
3246         unsigned long flags;
3247
3248         switch (f->type) {
3249         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3250                 struct v4l2_pix_format *pf = &f->fmt.pix;
3251
3252                 dprintk("requested: w = %d, h = %d\n",
3253                        pf->width, pf->height);
3254
3255                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3256                 memcpy(&tempvcs, vcs, sizeof(struct vino_channel_settings));
3257                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3258
3259                 tempvcs.data_format = vino_find_data_format(pf->pixelformat);
3260                 if (tempvcs.data_format == VINO_DATA_FMT_NONE) {
3261                         tempvcs.data_format = VINO_DATA_FMT_GREY;
3262                         pf->pixelformat =
3263                                 vino_data_formats[tempvcs.data_format].
3264                                 pixelformat;
3265                 }
3266
3267                 /* data format must be set before clipping/scaling */
3268                 vino_set_scaling(&tempvcs, pf->width, pf->height);
3269
3270                 dprintk("data format = %s\n",
3271                        vino_data_formats[tempvcs.data_format].description);
3272
3273                 pf->width = (tempvcs.clipping.right - tempvcs.clipping.left) /
3274                         tempvcs.decimation;
3275                 pf->height = (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3276                         tempvcs.decimation;
3277
3278                 pf->field = V4L2_FIELD_INTERLACED;
3279                 pf->bytesperline = tempvcs.line_size;
3280                 pf->sizeimage = tempvcs.line_size *
3281                         (tempvcs.clipping.bottom - tempvcs.clipping.top) /
3282                         tempvcs.decimation;
3283                 pf->colorspace =
3284                         vino_data_formats[tempvcs.data_format].colorspace;
3285
3286                 pf->priv = 0;
3287                 break;
3288         }
3289         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3290         default:
3291                 return -EINVAL;
3292         }
3293
3294         return 0;
3295 }
3296
3297 static int vino_v4l2_g_fmt(struct vino_channel_settings *vcs,
3298                            struct v4l2_format *f)
3299 {
3300         unsigned long flags;
3301
3302         switch (f->type) {
3303         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3304                 struct v4l2_pix_format *pf = &f->fmt.pix;
3305
3306                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3307
3308                 pf->width = (vcs->clipping.right - vcs->clipping.left) /
3309                         vcs->decimation;
3310                 pf->height = (vcs->clipping.bottom - vcs->clipping.top) /
3311                         vcs->decimation;
3312                 pf->pixelformat =
3313                         vino_data_formats[vcs->data_format].pixelformat;
3314
3315                 pf->field = V4L2_FIELD_INTERLACED;
3316                 pf->bytesperline = vcs->line_size;
3317                 pf->sizeimage = vcs->line_size *
3318                         (vcs->clipping.bottom - vcs->clipping.top) /
3319                         vcs->decimation;
3320                 pf->colorspace =
3321                         vino_data_formats[vcs->data_format].colorspace;
3322
3323                 pf->priv = 0;
3324
3325                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3326                 break;
3327         }
3328         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3329         default:
3330                 return -EINVAL;
3331         }
3332
3333         return 0;
3334 }
3335
3336 static int vino_v4l2_s_fmt(struct vino_channel_settings *vcs,
3337                            struct v4l2_format *f)
3338 {
3339         int data_format;
3340         unsigned long flags;
3341
3342         switch (f->type) {
3343         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3344                 struct v4l2_pix_format *pf = &f->fmt.pix;
3345
3346                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3347
3348                 data_format = vino_find_data_format(pf->pixelformat);
3349
3350                 if (data_format == VINO_DATA_FMT_NONE) {
3351                         vcs->data_format = VINO_DATA_FMT_GREY;
3352                         pf->pixelformat =
3353                                 vino_data_formats[vcs->data_format].
3354                                 pixelformat;
3355                 } else {
3356                         vcs->data_format = data_format;
3357                 }
3358
3359                 /* data format must be set before clipping/scaling */
3360                 vino_set_scaling(vcs, pf->width, pf->height);
3361
3362                 dprintk("data format = %s\n",
3363                        vino_data_formats[vcs->data_format].description);
3364
3365                 pf->width = vcs->clipping.right - vcs->clipping.left;
3366                 pf->height = vcs->clipping.bottom - vcs->clipping.top;
3367
3368                 pf->field = V4L2_FIELD_INTERLACED;
3369                 pf->bytesperline = vcs->line_size;
3370                 pf->sizeimage = vcs->line_size *
3371                         (vcs->clipping.bottom - vcs->clipping.top) /
3372                         vcs->decimation;
3373                 pf->colorspace =
3374                         vino_data_formats[vcs->data_format].colorspace;
3375
3376                 pf->priv = 0;
3377
3378                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3379                 break;
3380         }
3381         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3382         default:
3383                 return -EINVAL;
3384         }
3385
3386         return 0;
3387 }
3388
3389 static int vino_v4l2_cropcap(struct vino_channel_settings *vcs,
3390                              struct v4l2_cropcap *ccap)
3391 {
3392         const struct vino_data_norm *norm;
3393         unsigned long flags;
3394
3395         switch (ccap->type) {
3396         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3397                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3398
3399                 norm = &vino_data_norms[vcs->data_norm];
3400
3401                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3402
3403                 ccap->bounds.left = 0;
3404                 ccap->bounds.top = 0;
3405                 ccap->bounds.width = norm->width;
3406                 ccap->bounds.height = norm->height;
3407                 memcpy(&ccap->defrect, &ccap->bounds,
3408                        sizeof(struct v4l2_rect));
3409
3410                 ccap->pixelaspect.numerator = 1;
3411                 ccap->pixelaspect.denominator = 1;
3412                 break;
3413         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3414         default:
3415                 return -EINVAL;
3416         }
3417
3418         return 0;
3419 }
3420
3421 static int vino_v4l2_g_crop(struct vino_channel_settings *vcs,
3422                             struct v4l2_crop *c)
3423 {
3424         unsigned long flags;
3425
3426         switch (c->type) {
3427         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3428                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3429
3430                 c->c.left = vcs->clipping.left;
3431                 c->c.top = vcs->clipping.top;
3432                 c->c.width = vcs->clipping.right - vcs->clipping.left;
3433                 c->c.height = vcs->clipping.bottom - vcs->clipping.top;
3434
3435                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3436                 break;
3437         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3438         default:
3439                 return -EINVAL;
3440         }
3441
3442         return 0;
3443 }
3444
3445 static int vino_v4l2_s_crop(struct vino_channel_settings *vcs,
3446                             struct v4l2_crop *c)
3447 {
3448         unsigned long flags;
3449
3450         switch (c->type) {
3451         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
3452                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3453
3454                 vino_set_clipping(vcs, c->c.left, c->c.top,
3455                                   c->c.width, c->c.height);
3456
3457                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3458                 break;
3459         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3460         default:
3461                 return -EINVAL;
3462         }
3463
3464         return 0;
3465 }
3466
3467 static int vino_v4l2_g_parm(struct vino_channel_settings *vcs,
3468                             struct v4l2_streamparm *sp)
3469 {
3470         unsigned long flags;
3471
3472         switch (sp->type) {
3473         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3474                 struct v4l2_captureparm *cp = &sp->parm.capture;
3475                 memset(cp, 0, sizeof(struct v4l2_captureparm));
3476
3477                 cp->capability = V4L2_CAP_TIMEPERFRAME;
3478                 cp->timeperframe.numerator = 1;
3479
3480                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3481
3482                 cp->timeperframe.denominator = vcs->fps;
3483
3484                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3485
3486                 // TODO: cp->readbuffers = xxx;
3487                 break;
3488         }
3489         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3490         default:
3491                 return -EINVAL;
3492         }
3493
3494         return 0;
3495 }
3496
3497 static int vino_v4l2_s_parm(struct vino_channel_settings *vcs,
3498                             struct v4l2_streamparm *sp)
3499 {
3500         unsigned long flags;
3501
3502         switch (sp->type) {
3503         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3504                 struct v4l2_captureparm *cp = &sp->parm.capture;
3505
3506                 spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3507
3508                 if ((cp->timeperframe.numerator == 0) ||
3509                     (cp->timeperframe.denominator == 0)) {
3510                         /* reset framerate */
3511                         vino_set_default_framerate(vcs);
3512                 } else {
3513                         vino_set_framerate(vcs, cp->timeperframe.denominator /
3514                                            cp->timeperframe.numerator);
3515                 }
3516
3517                 spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3518
3519                 // TODO: set buffers according to cp->readbuffers
3520                 break;
3521         }
3522         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3523         default:
3524                 return -EINVAL;
3525         }
3526
3527         return 0;
3528 }
3529
3530 static int vino_v4l2_reqbufs(struct vino_channel_settings *vcs,
3531                              struct v4l2_requestbuffers *rb)
3532 {
3533         if (vcs->reading)
3534                 return -EBUSY;
3535
3536         switch (rb->type) {
3537         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3538                 // TODO: check queue type
3539                 if (rb->memory != V4L2_MEMORY_MMAP) {
3540                         dprintk("type not mmap\n");
3541                         return -EINVAL;
3542                 }
3543
3544                 dprintk("count = %d\n", rb->count);
3545                 if (rb->count > 0) {
3546                         if (vino_is_capturing(vcs)) {
3547                                 dprintk("busy, capturing\n");
3548                                 return -EBUSY;
3549                         }
3550
3551                         if (vino_queue_has_mapped_buffers(&vcs->fb_queue)) {
3552                                 dprintk("busy, buffers still mapped\n");
3553                                 return -EBUSY;
3554                         } else {
3555                                 vcs->streaming = 0;
3556                                 vino_queue_free(&vcs->fb_queue);
3557                                 vino_queue_init(&vcs->fb_queue, &rb->count);
3558                         }
3559                 } else {
3560                         vcs->streaming = 0;
3561                         vino_capture_stop(vcs);
3562                         vino_queue_free(&vcs->fb_queue);
3563                 }
3564                 break;
3565         }
3566         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3567         default:
3568                 return -EINVAL;
3569         }
3570
3571         return 0;
3572 }
3573
3574 static void vino_v4l2_get_buffer_status(struct vino_channel_settings *vcs,
3575                                         struct vino_framebuffer *fb,
3576                                         struct v4l2_buffer *b)
3577 {
3578         if (vino_queue_outgoing_contains(&vcs->fb_queue,
3579                                          fb->id)) {
3580                 b->flags &= ~V4L2_BUF_FLAG_QUEUED;
3581                 b->flags |= V4L2_BUF_FLAG_DONE;
3582         } else if (vino_queue_incoming_contains(&vcs->fb_queue,
3583                                        fb->id)) {
3584                 b->flags &= ~V4L2_BUF_FLAG_DONE;
3585                 b->flags |= V4L2_BUF_FLAG_QUEUED;
3586         } else {
3587                 b->flags &= ~(V4L2_BUF_FLAG_DONE |
3588                               V4L2_BUF_FLAG_QUEUED);
3589         }
3590
3591         b->flags &= ~(V4L2_BUF_FLAG_TIMECODE);
3592
3593         if (fb->map_count > 0)
3594                 b->flags |= V4L2_BUF_FLAG_MAPPED;
3595
3596         b->index = fb->id;
3597         b->memory = (vcs->fb_queue.type == VINO_MEMORY_MMAP) ?
3598                 V4L2_MEMORY_MMAP : V4L2_MEMORY_USERPTR;
3599         b->m.offset = fb->offset;
3600         b->bytesused = fb->data_size;
3601         b->length = fb->size;
3602         b->field = V4L2_FIELD_INTERLACED;
3603         b->sequence = fb->frame_counter;
3604         memcpy(&b->timestamp, &fb->timestamp,
3605                sizeof(struct timeval));
3606         // b->input ?
3607
3608         dprintk("buffer %d: length = %d, bytesused = %d, offset = %d\n",
3609                 fb->id, fb->size, fb->data_size, fb->offset);
3610 }
3611
3612 static int vino_v4l2_querybuf(struct vino_channel_settings *vcs,
3613                               struct v4l2_buffer *b)
3614 {
3615         if (vcs->reading)
3616                 return -EBUSY;
3617
3618         switch (b->type) {
3619         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3620                 struct vino_framebuffer *fb;
3621
3622                 // TODO: check queue type
3623                 if (b->index >= vino_queue_get_length(&vcs->fb_queue)) {
3624                         dprintk("invalid index = %d\n",
3625                                b->index);
3626                         return -EINVAL;
3627                 }
3628
3629                 fb = vino_queue_get_buffer(&vcs->fb_queue,
3630                                            b->index);
3631                 if (fb == NULL) {
3632                         dprintk("vino_queue_get_buffer() failed");
3633                         return -EINVAL;
3634                 }
3635
3636                 vino_v4l2_get_buffer_status(vcs, fb, b);
3637                 break;
3638         }
3639         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3640         default:
3641                 return -EINVAL;
3642         }
3643
3644         return 0;
3645 }
3646
3647 static int vino_v4l2_qbuf(struct vino_channel_settings *vcs,
3648                           struct v4l2_buffer *b)
3649 {
3650         if (vcs->reading)
3651                 return -EBUSY;
3652
3653         switch (b->type) {
3654         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3655                 struct vino_framebuffer *fb;
3656                 int ret;
3657
3658                 // TODO: check queue type
3659                 if (b->memory != V4L2_MEMORY_MMAP) {
3660                         dprintk("type not mmap\n");
3661                         return -EINVAL;
3662                 }
3663
3664                 fb = vino_capture_enqueue(vcs, b->index);
3665                 if (fb == NULL)
3666                         return -EINVAL;
3667
3668                 vino_v4l2_get_buffer_status(vcs, fb, b);
3669
3670                 if (vcs->streaming) {
3671                         ret = vino_capture_next(vcs, 1);
3672                         if (ret)
3673                                 return ret;
3674                 }
3675                 break;
3676         }
3677         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3678         default:
3679                 return -EINVAL;
3680         }
3681
3682         return 0;
3683 }
3684
3685 static int vino_v4l2_dqbuf(struct vino_channel_settings *vcs,
3686                            struct v4l2_buffer *b,
3687                            unsigned int nonblocking)
3688 {
3689         if (vcs->reading)
3690                 return -EBUSY;
3691
3692         switch (b->type) {
3693         case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
3694                 struct vino_framebuffer *fb;
3695                 unsigned int incoming, outgoing;
3696                 int err;
3697
3698                 // TODO: check queue type
3699
3700                 err = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3701                 if (err) {
3702                         dprintk("vino_queue_get_incoming() failed\n");
3703                         return -EINVAL;
3704                 }
3705                 err = vino_queue_get_outgoing(&vcs->fb_queue, &outgoing);
3706                 if (err) {
3707                         dprintk("vino_queue_get_outgoing() failed\n");
3708                         return -EINVAL;
3709                 }
3710
3711                 dprintk("incoming = %d, outgoing = %d\n", incoming, outgoing);
3712
3713                 if (outgoing == 0) {
3714                         if (incoming == 0) {
3715                                 dprintk("no incoming or outgoing buffers\n");
3716                                 return -EINVAL;
3717                         }
3718                         if (nonblocking) {
3719                                 dprintk("non-blocking I/O was selected and "
3720                                         "there are no buffers to dequeue\n");
3721                                 return -EAGAIN;
3722                         }
3723
3724                         err = vino_wait_for_frame(vcs);
3725                         if (err) {
3726                                 err = vino_wait_for_frame(vcs);
3727                                 if (err) {
3728                                         /* interrupted or
3729                                          * no frames captured because
3730                                          * of frame skipping */
3731                                         // vino_capture_failed(vcs);
3732                                         return -EIO;
3733                                 }
3734                         }
3735                 }
3736
3737                 fb = vino_queue_remove(&vcs->fb_queue, &b->index);
3738                 if (fb == NULL) {
3739                         dprintk("vino_queue_remove() failed\n");
3740                         return -EINVAL;
3741                 }
3742
3743                 err = vino_check_buffer(vcs, fb);
3744
3745                 vino_v4l2_get_buffer_status(vcs, fb, b);
3746
3747                 if (err)
3748                         return -EIO;
3749
3750                 break;
3751         }
3752         case V4L2_BUF_TYPE_VIDEO_OVERLAY:
3753         default:
3754                 return -EINVAL;
3755         }
3756
3757         return 0;
3758 }
3759
3760 static int vino_v4l2_streamon(struct vino_channel_settings *vcs)
3761 {
3762         unsigned int incoming;
3763         int ret;
3764         if (vcs->reading)
3765                 return -EBUSY;
3766
3767         if (vcs->streaming)
3768                 return 0;
3769
3770         // TODO: check queue type
3771
3772         if (vino_queue_get_length(&vcs->fb_queue) < 1) {
3773                 dprintk("no buffers allocated\n");
3774                 return -EINVAL;
3775         }
3776
3777         ret = vino_queue_get_incoming(&vcs->fb_queue, &incoming);
3778         if (ret) {
3779                 dprintk("vino_queue_get_incoming() failed\n");
3780                 return -EINVAL;
3781         }
3782
3783         vcs->streaming = 1;
3784
3785         if (incoming > 0) {
3786                 ret = vino_capture_next(vcs, 1);
3787                 if (ret) {
3788                         vcs->streaming = 0;
3789
3790                         dprintk("couldn't start capture\n");
3791                         return -EINVAL;
3792                 }
3793         }
3794
3795         return 0;
3796 }
3797
3798 static int vino_v4l2_streamoff(struct vino_channel_settings *vcs)
3799 {
3800         if (vcs->reading)
3801                 return -EBUSY;
3802
3803         if (!vcs->streaming)
3804                 return 0;
3805
3806         vcs->streaming = 0;
3807         vino_capture_stop(vcs);
3808
3809         return 0;
3810 }
3811
3812 static int vino_v4l2_queryctrl(struct vino_channel_settings *vcs,
3813                                struct v4l2_queryctrl *queryctrl)
3814 {
3815         unsigned long flags;
3816         int i;
3817         int err = 0;
3818
3819         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3820
3821         switch (vcs->input) {
3822         case VINO_INPUT_D1:
3823                 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3824                         if (vino_indycam_v4l2_controls[i].id ==
3825                             queryctrl->id) {
3826                                 memcpy(queryctrl,
3827                                        &vino_indycam_v4l2_controls[i],
3828                                        sizeof(struct v4l2_queryctrl));
3829                                 queryctrl->reserved[0] = 0;
3830                                 goto found;
3831                         }
3832                 }
3833
3834                 err =  -EINVAL;
3835                 break;
3836         case VINO_INPUT_COMPOSITE:
3837         case VINO_INPUT_SVIDEO:
3838                 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3839                         if (vino_saa7191_v4l2_controls[i].id ==
3840                             queryctrl->id) {
3841                                 memcpy(queryctrl,
3842                                        &vino_saa7191_v4l2_controls[i],
3843                                        sizeof(struct v4l2_queryctrl));
3844                                 queryctrl->reserved[0] = 0;
3845                                 goto found;
3846                         }
3847                 }
3848
3849                 err =  -EINVAL;
3850                 break;
3851         default:
3852                 err =  -EINVAL;
3853         }
3854
3855  found:
3856         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3857
3858         return err;
3859 }
3860
3861 static int vino_v4l2_g_ctrl(struct vino_channel_settings *vcs,
3862                             struct v4l2_control *control)
3863 {
3864         unsigned long flags;
3865         int i;
3866         int err = 0;
3867
3868         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3869
3870         switch (vcs->input) {
3871         case VINO_INPUT_D1: {
3872                 struct indycam_control indycam_ctrl;
3873
3874                 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3875                         if (vino_indycam_v4l2_controls[i].id ==
3876                             control->id) {
3877                                 goto found1;
3878                         }
3879                 }
3880
3881                 err = -EINVAL;
3882                 goto out;
3883
3884 found1:
3885                 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3886
3887                 err = i2c_camera_command(DECODER_INDYCAM_GET_CONTROL,
3888                                          &indycam_ctrl);
3889                 if (err) {
3890                         err = -EINVAL;
3891                         goto out;
3892                 }
3893
3894                 control->value = indycam_ctrl.value;
3895                 break;
3896         }
3897         case VINO_INPUT_COMPOSITE:
3898         case VINO_INPUT_SVIDEO: {
3899                 struct saa7191_control saa7191_ctrl;
3900
3901                 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3902                         if (vino_saa7191_v4l2_controls[i].id ==
3903                             control->id) {
3904                                 goto found2;
3905                         }
3906                 }
3907
3908                 err = -EINVAL;
3909                 goto out;
3910
3911 found2:
3912                 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
3913
3914                 err = i2c_decoder_command(DECODER_SAA7191_GET_CONTROL,
3915                                           &saa7191_ctrl);
3916                 if (err) {
3917                         err = -EINVAL;
3918                         goto out;
3919                 }
3920
3921                 control->value = saa7191_ctrl.value;
3922                 break;
3923         }
3924         default:
3925                 err =  -EINVAL;
3926         }
3927
3928 out:
3929         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
3930
3931         return err;
3932 }
3933
3934 static int vino_v4l2_s_ctrl(struct vino_channel_settings *vcs,
3935                             struct v4l2_control *control)
3936 {
3937         unsigned long flags;
3938         int i;
3939         int err = 0;
3940
3941         spin_lock_irqsave(&vino_drvdata->input_lock, flags);
3942
3943         if (!vino_is_input_owner(vcs)) {
3944                 err = -EBUSY;
3945                 goto out;
3946         }
3947
3948         switch (vcs->input) {
3949         case VINO_INPUT_D1: {
3950                 struct indycam_control indycam_ctrl;
3951
3952                 for (i = 0; i < VINO_INDYCAM_V4L2_CONTROL_COUNT; i++) {
3953                         if (vino_indycam_v4l2_controls[i].id ==
3954                             control->id) {
3955                                 if ((control->value >=
3956                                      vino_indycam_v4l2_controls[i].minimum)
3957                                     && (control->value <=
3958                                         vino_indycam_v4l2_controls[i].
3959                                         maximum)) {
3960                                         goto found1;
3961                                 } else {
3962                                         err = -ERANGE;
3963                                         goto out;
3964                                 }
3965                         }
3966                 }
3967
3968                 err = -EINVAL;
3969                 goto out;
3970
3971 found1:
3972                 indycam_ctrl.type = vino_indycam_v4l2_controls[i].reserved[0];
3973                 indycam_ctrl.value = control->value;
3974
3975                 err = i2c_camera_command(DECODER_INDYCAM_SET_CONTROL,
3976                                          &indycam_ctrl);
3977                 if (err)
3978                         err = -EINVAL;
3979                 break;
3980         }
3981         case VINO_INPUT_COMPOSITE:
3982         case VINO_INPUT_SVIDEO: {
3983                 struct saa7191_control saa7191_ctrl;
3984
3985                 for (i = 0; i < VINO_SAA7191_V4L2_CONTROL_COUNT; i++) {
3986                         if (vino_saa7191_v4l2_controls[i].id ==
3987                             control->id) {
3988                                 if ((control->value >=
3989                                      vino_saa7191_v4l2_controls[i].minimum)
3990                                     && (control->value <=
3991                                         vino_saa7191_v4l2_controls[i].
3992                                         maximum)) {
3993                                         goto found2;
3994                                 } else {
3995                                         err = -ERANGE;
3996                                         goto out;
3997                                 }
3998                         }
3999                 }
4000                 err = -EINVAL;
4001                 goto out;
4002
4003 found2:
4004                 saa7191_ctrl.type = vino_saa7191_v4l2_controls[i].reserved[0];
4005                 saa7191_ctrl.value = control->value;
4006
4007                 err = i2c_decoder_command(DECODER_SAA7191_SET_CONTROL,
4008                                           &saa7191_ctrl);
4009                 if (err)
4010                         err = -EINVAL;
4011                 break;
4012         }
4013         default:
4014                 err =  -EINVAL;
4015         }
4016
4017 out:
4018         spin_unlock_irqrestore(&vino_drvdata->input_lock, flags);
4019
4020         return err;
4021 }
4022
4023 /* File operations */
4024
4025 static int vino_open(struct inode *inode, struct file *file)
4026 {
4027         struct vino_channel_settings *vcs = video_drvdata(file);
4028         int ret = 0;
4029         dprintk("open(): channel = %c\n",
4030                (vcs->channel == VINO_CHANNEL_A) ? 'A' : 'B');
4031
4032         mutex_lock(&vcs->mutex);
4033
4034         if (vcs->users) {
4035                 dprintk("open(): driver busy\n");
4036                 ret = -EBUSY;
4037                 goto out;
4038         }
4039
4040         ret = vino_acquire_input(vcs);
4041         if (ret) {
4042                 dprintk("open(): vino_acquire_input() failed\n");
4043                 goto out;
4044         }
4045
4046         vcs->users++;
4047
4048  out:
4049         mutex_unlock(&vcs->mutex);
4050
4051         dprintk("open(): %s!\n", ret ? "failed" : "complete");
4052
4053         return ret;
4054 }
4055
4056 static int vino_close(struct inode *inode, struct file *file)
4057 {
4058         struct vino_channel_settings *vcs = video_drvdata(file);
4059         dprintk("close():\n");
4060
4061         mutex_lock(&vcs->mutex);
4062
4063         vcs->users--;
4064
4065         if (!vcs->users) {
4066                 vino_release_input(vcs);
4067
4068                 /* stop DMA and free buffers */
4069                 vino_capture_stop(vcs);
4070                 vino_queue_free(&vcs->fb_queue);
4071         }
4072
4073         mutex_unlock(&vcs->mutex);
4074
4075         return 0;
4076 }
4077
4078 static void vino_vm_open(struct vm_area_struct *vma)
4079 {
4080         struct vino_framebuffer *fb = vma->vm_private_data;
4081
4082         fb->map_count++;
4083         dprintk("vino_vm_open(): count = %d\n", fb->map_count);
4084 }
4085
4086 static void vino_vm_close(struct vm_area_struct *vma)
4087 {
4088         struct vino_framebuffer *fb = vma->vm_private_data;
4089
4090         fb->map_count--;
4091         dprintk("vino_vm_close(): count = %d\n", fb->map_count);
4092 }
4093
4094 static struct vm_operations_struct vino_vm_ops = {
4095         .open   = vino_vm_open,
4096         .close  = vino_vm_close,
4097 };
4098
4099 static int vino_mmap(struct file *file, struct vm_area_struct *vma)
4100 {
4101         struct vino_channel_settings *vcs = video_drvdata(file);
4102
4103         unsigned long start = vma->vm_start;
4104         unsigned long size = vma->vm_end - vma->vm_start;
4105         unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
4106
4107         struct vino_framebuffer *fb = NULL;
4108         unsigned int i, length;
4109         int ret = 0;
4110
4111         dprintk("mmap():\n");
4112
4113         // TODO: reject mmap if already mapped
4114
4115         if (mutex_lock_interruptible(&vcs->mutex))
4116                 return -EINTR;
4117
4118         if (vcs->reading) {
4119                 ret = -EBUSY;
4120                 goto out;
4121         }
4122
4123         // TODO: check queue type
4124
4125         if (!(vma->vm_flags & VM_WRITE)) {
4126                 dprintk("mmap(): app bug: PROT_WRITE please\n");
4127                 ret = -EINVAL;
4128                 goto out;
4129         }
4130         if (!(vma->vm_flags & VM_SHARED)) {
4131                 dprintk("mmap(): app bug: MAP_SHARED please\n");
4132                 ret = -EINVAL;
4133                 goto out;
4134         }
4135
4136         /* find the correct buffer using offset */
4137         length = vino_queue_get_length(&vcs->fb_queue);
4138         if (length == 0) {
4139                 dprintk("mmap(): queue not initialized\n");
4140                 ret = -EINVAL;
4141                 goto out;
4142         }
4143
4144         for (i = 0; i < length; i++) {
4145                 fb = vino_queue_get_buffer(&vcs->fb_queue, i);
4146                 if (fb == NULL) {
4147                         dprintk("mmap(): vino_queue_get_buffer() failed\n");
4148                         ret = -EINVAL;
4149                         goto out;
4150                 }
4151
4152                 if (fb->offset == offset)
4153                         goto found;
4154         }
4155
4156         dprintk("mmap(): invalid offset = %lu\n", offset);
4157         ret = -EINVAL;
4158         goto out;
4159
4160 found:
4161         dprintk("mmap(): buffer = %d\n", i);
4162
4163         if (size > (fb->desc_table.page_count * PAGE_SIZE)) {
4164                 dprintk("mmap(): failed: size = %lu > %lu\n",
4165                         size, fb->desc_table.page_count * PAGE_SIZE);
4166                 ret = -EINVAL;
4167                 goto out;
4168         }
4169
4170         for (i = 0; i < fb->desc_table.page_count; i++) {
4171                 unsigned long pfn =
4172                         virt_to_phys((void *)fb->desc_table.virtual[i]) >>
4173                         PAGE_SHIFT;
4174
4175                 if (size < PAGE_SIZE)
4176                         break;
4177
4178                 // protection was: PAGE_READONLY
4179                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE,
4180                                     vma->vm_page_prot)) {
4181                         dprintk("mmap(): remap_pfn_range() failed\n");
4182                         ret = -EAGAIN;
4183                         goto out;
4184                 }
4185
4186                 start += PAGE_SIZE;
4187                 size -= PAGE_SIZE;
4188         }
4189
4190         fb->map_count = 1;
4191
4192         vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;
4193         vma->vm_flags &= ~VM_IO;
4194         vma->vm_private_data = fb;
4195         vma->vm_file = file;
4196         vma->vm_ops = &vino_vm_ops;
4197
4198 out:
4199         mutex_unlock(&vcs->mutex);
4200
4201         return ret;
4202 }
4203
4204 static unsigned int vino_poll(struct file *file, poll_table *pt)
4205 {
4206         struct vino_channel_settings *vcs = video_drvdata(file);
4207         unsigned int outgoing;
4208         unsigned int ret = 0;
4209
4210         // lock mutex (?)
4211         // TODO: this has to be corrected for different read modes
4212
4213         dprintk("poll():\n");
4214
4215         if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4216                 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4217                 ret = POLLERR;
4218                 goto error;
4219         }
4220         if (outgoing > 0)
4221                 goto over;
4222
4223         poll_wait(file, &vcs->fb_queue.frame_wait_queue, pt);
4224
4225         if (vino_queue_get_outgoing(&vcs->fb_queue, &outgoing)) {
4226                 dprintk("poll(): vino_queue_get_outgoing() failed\n");
4227                 ret = POLLERR;
4228                 goto error;
4229         }
4230
4231 over:
4232         dprintk("poll(): data %savailable\n",
4233                 (outgoing > 0) ? "" : "not ");
4234
4235         if (outgoing > 0)
4236                 ret = POLLIN | POLLRDNORM;
4237
4238 error:
4239
4240         return ret;
4241 }
4242
4243 static int vino_do_ioctl(struct inode *inode, struct file *file,
4244                       unsigned int cmd, void *arg)
4245 {
4246         struct vino_channel_settings *vcs = video_drvdata(file);
4247
4248 #ifdef VINO_DEBUG
4249         switch (_IOC_TYPE(cmd)) {
4250         case 'v':
4251                 dprintk("ioctl(): V4L1 unsupported (0x%08x)\n", cmd);
4252                 break;
4253         case 'V':
4254                 dprintk("ioctl(): V4L2 %s (0x%08x)\n",
4255                         v4l2_ioctl_names[_IOC_NR(cmd)], cmd);
4256                 break;
4257         default:
4258                 dprintk("ioctl(): unsupported command 0x%08x\n", cmd);
4259         }
4260 #endif
4261
4262         switch (cmd) {
4263         /* V4L2 interface */
4264         case VIDIOC_QUERYCAP: {
4265                 vino_v4l2_querycap(arg);
4266                 break;
4267         }
4268         case VIDIOC_ENUMINPUT: {
4269                 return vino_v4l2_enuminput(vcs, arg);
4270         }
4271         case VIDIOC_G_INPUT: {
4272                 return vino_v4l2_g_input(vcs, arg);
4273         }
4274         case VIDIOC_S_INPUT: {
4275                 return vino_v4l2_s_input(vcs, arg);
4276         }
4277         case VIDIOC_ENUMSTD: {
4278                 return vino_v4l2_enumstd(vcs, arg);
4279         }
4280         case VIDIOC_QUERYSTD: {
4281                 return vino_v4l2_querystd(vcs, arg);
4282         }
4283         case VIDIOC_G_STD: {
4284                 return vino_v4l2_g_std(vcs, arg);
4285         }
4286         case VIDIOC_S_STD: {
4287                 return vino_v4l2_s_std(vcs, arg);
4288         }
4289         case VIDIOC_ENUM_FMT: {
4290                 return vino_v4l2_enum_fmt(vcs, arg);
4291         }
4292         case VIDIOC_TRY_FMT: {
4293                 return vino_v4l2_try_fmt(vcs, arg);
4294         }
4295         case VIDIOC_G_FMT: {
4296                 return vino_v4l2_g_fmt(vcs, arg);
4297         }
4298         case VIDIOC_S_FMT: {
4299                 return vino_v4l2_s_fmt(vcs, arg);
4300         }
4301         case VIDIOC_CROPCAP: {
4302                 return vino_v4l2_cropcap(vcs, arg);
4303         }
4304         case VIDIOC_G_CROP: {
4305                 return vino_v4l2_g_crop(vcs, arg);
4306         }
4307         case VIDIOC_S_CROP: {
4308                 return vino_v4l2_s_crop(vcs, arg);
4309         }
4310         case VIDIOC_G_PARM: {
4311                 return vino_v4l2_g_parm(vcs, arg);
4312         }
4313         case VIDIOC_S_PARM: {
4314                 return vino_v4l2_s_parm(vcs, arg);
4315         }
4316         case VIDIOC_REQBUFS: {
4317                 return vino_v4l2_reqbufs(vcs, arg);
4318         }
4319         case VIDIOC_QUERYBUF: {
4320                 return vino_v4l2_querybuf(vcs, arg);
4321         }
4322         case VIDIOC_QBUF: {
4323                 return vino_v4l2_qbuf(vcs, arg);
4324         }
4325         case VIDIOC_DQBUF: {
4326                 return vino_v4l2_dqbuf(vcs, arg, file->f_flags & O_NONBLOCK);
4327         }
4328         case VIDIOC_STREAMON: {
4329                 return vino_v4l2_streamon(vcs);
4330         }
4331         case VIDIOC_STREAMOFF: {
4332                 return vino_v4l2_streamoff(vcs);
4333         }
4334         case VIDIOC_QUERYCTRL: {
4335                 return vino_v4l2_queryctrl(vcs, arg);
4336         }
4337         case VIDIOC_G_CTRL: {
4338                 return vino_v4l2_g_ctrl(vcs, arg);
4339         }
4340         case VIDIOC_S_CTRL: {
4341                 return vino_v4l2_s_ctrl(vcs, arg);
4342         }
4343         default:
4344                 return -ENOIOCTLCMD;
4345         }
4346
4347         return 0;
4348 }
4349
4350 static int vino_ioctl(struct inode *inode, struct file *file,
4351                       unsigned int cmd, unsigned long arg)
4352 {
4353         struct vino_channel_settings *vcs = video_drvdata(file);
4354         int ret;
4355
4356         if (mutex_lock_interruptible(&vcs->mutex))
4357                 return -EINTR;
4358
4359         ret = video_usercopy(inode, file, cmd, arg, vino_do_ioctl);
4360
4361         mutex_unlock(&vcs->mutex);
4362
4363         return ret;
4364 }
4365
4366 /* Initialization and cleanup */
4367
4368 /* __initdata */
4369 static int vino_init_stage;
4370
4371 static const struct file_operations vino_fops = {
4372         .owner          = THIS_MODULE,
4373         .open           = vino_open,
4374         .release        = vino_close,
4375         .ioctl          = vino_ioctl,
4376         .mmap           = vino_mmap,
4377         .poll           = vino_poll,
4378         .llseek         = no_llseek,
4379 };
4380
4381 static struct video_device v4l_device_template = {
4382         .name           = "NOT SET",
4383         .fops           = &vino_fops,
4384         .minor          = -1,
4385 };
4386
4387 static void vino_module_cleanup(int stage)
4388 {
4389         switch(stage) {
4390         case 10:
4391                 video_unregister_device(vino_drvdata->b.v4l_device);
4392                 vino_drvdata->b.v4l_device = NULL;
4393         case 9:
4394                 video_unregister_device(vino_drvdata->a.v4l_device);
4395                 vino_drvdata->a.v4l_device = NULL;
4396         case 8:
4397                 vino_i2c_del_bus();
4398         case 7:
4399                 free_irq(SGI_VINO_IRQ, NULL);
4400         case 6:
4401                 if (vino_drvdata->b.v4l_device) {
4402                         video_device_release(vino_drvdata->b.v4l_device);
4403                         vino_drvdata->b.v4l_device = NULL;
4404                 }
4405         case 5:
4406                 if (vino_drvdata->a.v4l_device) {
4407                         video_device_release(vino_drvdata->a.v4l_device);
4408                         vino_drvdata->a.v4l_device = NULL;
4409                 }
4410         case 4:
4411                 /* all entries in dma_cpu dummy table have the same address */
4412                 dma_unmap_single(NULL,
4413                                  vino_drvdata->dummy_desc_table.dma_cpu[0],
4414                                  PAGE_SIZE, DMA_FROM_DEVICE);
4415                 dma_free_coherent(NULL, VINO_DUMMY_DESC_COUNT
4416                                   * sizeof(dma_addr_t),
4417                                   (void *)vino_drvdata->
4418                                   dummy_desc_table.dma_cpu,
4419                                   vino_drvdata->dummy_desc_table.dma);
4420         case 3:
4421                 free_page(vino_drvdata->dummy_page);
4422         case 2:
4423                 kfree(vino_drvdata);
4424         case 1:
4425                 iounmap(vino);
4426         case 0:
4427                 break;
4428         default:
4429                 dprintk("vino_module_cleanup(): invalid cleanup stage = %d\n",
4430                         stage);
4431         }
4432 }
4433
4434 static int vino_probe(void)
4435 {
4436         unsigned long rev_id;
4437
4438         if (ip22_is_fullhouse()) {
4439                 printk(KERN_ERR "VINO doesn't exist in IP22 Fullhouse\n");
4440                 return -ENODEV;
4441         }
4442
4443         if (!(sgimc->systemid & SGIMC_SYSID_EPRESENT)) {
4444                 printk(KERN_ERR "VINO is not found (EISA BUS not present)\n");
4445                 return -ENODEV;
4446         }
4447
4448         vino = (struct sgi_vino *)ioremap(VINO_BASE, sizeof(struct sgi_vino));
4449         if (!vino) {
4450                 printk(KERN_ERR "VINO: ioremap() failed\n");
4451                 return -EIO;
4452         }
4453         vino_init_stage++;
4454
4455         if (get_dbe(rev_id, &(vino->rev_id))) {
4456                 printk(KERN_ERR "Failed to read VINO revision register\n");
4457                 vino_module_cleanup(vino_init_stage);
4458                 return -ENODEV;
4459         }
4460
4461         if (VINO_ID_VALUE(rev_id) != VINO_CHIP_ID) {
4462                 printk(KERN_ERR "Unknown VINO chip ID (Rev/ID: 0x%02lx)\n",
4463                        rev_id);
4464                 vino_module_cleanup(vino_init_stage);
4465                 return -ENODEV;
4466         }
4467
4468         printk(KERN_INFO "VINO revision %ld found\n", VINO_REV_NUM(rev_id));
4469
4470         return 0;
4471 }
4472
4473 static int vino_init(void)
4474 {
4475         dma_addr_t dma_dummy_address;
4476         int i;
4477
4478         vino_drvdata = kzalloc(sizeof(struct vino_settings), GFP_KERNEL);
4479         if (!vino_drvdata) {
4480                 vino_module_cleanup(vino_init_stage);
4481                 return -ENOMEM;
4482         }
4483         vino_init_stage++;
4484
4485         /* create a dummy dma descriptor */
4486         vino_drvdata->dummy_page = get_zeroed_page(GFP_KERNEL | GFP_DMA);
4487         if (!vino_drvdata->dummy_page) {
4488                 vino_module_cleanup(vino_init_stage);
4489                 return -ENOMEM;
4490         }
4491         vino_init_stage++;
4492
4493         // TODO: use page_count in dummy_desc_table
4494
4495         vino_drvdata->dummy_desc_table.dma_cpu =
4496                 dma_alloc_coherent(NULL,
4497                 VINO_DUMMY_DESC_COUNT * sizeof(dma_addr_t),
4498                 &vino_drvdata->dummy_desc_table.dma,
4499                 GFP_KERNEL | GFP_DMA);
4500         if (!vino_drvdata->dummy_desc_table.dma_cpu) {
4501                 vino_module_cleanup(vino_init_stage);
4502                 return -ENOMEM;
4503         }
4504         vino_init_stage++;
4505
4506         dma_dummy_address = dma_map_single(NULL,
4507                                            (void *)vino_drvdata->dummy_page,
4508                                         PAGE_SIZE, DMA_FROM_DEVICE);
4509         for (i = 0; i < VINO_DUMMY_DESC_COUNT; i++) {
4510                 vino_drvdata->dummy_desc_table.dma_cpu[i] = dma_dummy_address;
4511         }
4512
4513         /* initialize VINO */
4514
4515         vino->control = 0;
4516         vino->a.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4517         vino->b.next_4_desc = vino_drvdata->dummy_desc_table.dma;
4518         udelay(VINO_DESC_FETCH_DELAY);
4519
4520         vino->intr_status = 0;
4521
4522         vino->a.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4523         vino->b.fifo_thres = VINO_FIFO_THRESHOLD_DEFAULT;
4524
4525         return 0;
4526 }
4527
4528 static int vino_init_channel_settings(struct vino_channel_settings *vcs,
4529                                  unsigned int channel, const char *name)
4530 {
4531         vcs->channel = channel;
4532         vcs->input = VINO_INPUT_NONE;
4533         vcs->alpha = 0;
4534         vcs->users = 0;
4535         vcs->data_format = VINO_DATA_FMT_GREY;
4536         vcs->data_norm = VINO_DATA_NORM_NTSC;
4537         vcs->decimation = 1;
4538         vino_set_default_clipping(vcs);
4539         vino_set_default_framerate(vcs);
4540
4541         vcs->capturing = 0;
4542
4543         mutex_init(&vcs->mutex);
4544         spin_lock_init(&vcs->capture_lock);
4545
4546         mutex_init(&vcs->fb_queue.queue_mutex);
4547         spin_lock_init(&vcs->fb_queue.queue_lock);
4548         init_waitqueue_head(&vcs->fb_queue.frame_wait_queue);
4549
4550         vcs->v4l_device = video_device_alloc();
4551         if (!vcs->v4l_device) {
4552                 vino_module_cleanup(vino_init_stage);
4553                 return -ENOMEM;
4554         }
4555         vino_init_stage++;
4556
4557         memcpy(vcs->v4l_device, &v4l_device_template,
4558                sizeof(struct video_device));
4559         strcpy(vcs->v4l_device->name, name);
4560         vcs->v4l_device->release = video_device_release;
4561
4562         video_set_drvdata(vcs->v4l_device, vcs);
4563
4564         return 0;
4565 }
4566
4567 static int __init vino_module_init(void)
4568 {
4569         int ret;
4570
4571         printk(KERN_INFO "SGI VINO driver version %s\n",
4572                VINO_MODULE_VERSION);
4573
4574         ret = vino_probe();
4575         if (ret)
4576                 return ret;
4577
4578         ret = vino_init();
4579         if (ret)
4580                 return ret;
4581
4582         /* initialize data structures */
4583
4584         spin_lock_init(&vino_drvdata->vino_lock);
4585         spin_lock_init(&vino_drvdata->input_lock);
4586
4587         ret = vino_init_channel_settings(&vino_drvdata->a, VINO_CHANNEL_A,
4588                                     vino_v4l_device_name_a);
4589         if (ret)
4590                 return ret;
4591
4592         ret = vino_init_channel_settings(&vino_drvdata->b, VINO_CHANNEL_B,
4593                                     vino_v4l_device_name_b);
4594         if (ret)
4595                 return ret;
4596
4597         /* initialize hardware and register V4L devices */
4598
4599         ret = request_irq(SGI_VINO_IRQ, vino_interrupt, 0,
4600                 vino_driver_description, NULL);
4601         if (ret) {
4602                 printk(KERN_ERR "VINO: requesting IRQ %02d failed\n",
4603                        SGI_VINO_IRQ);
4604                 vino_module_cleanup(vino_init_stage);
4605                 return -EAGAIN;
4606         }
4607         vino_init_stage++;
4608
4609         ret = vino_i2c_add_bus();
4610         if (ret) {
4611                 printk(KERN_ERR "VINO I2C bus registration failed\n");
4612                 vino_module_cleanup(vino_init_stage);
4613                 return ret;
4614         }
4615         vino_init_stage++;
4616
4617         ret = video_register_device(vino_drvdata->a.v4l_device,
4618                                     VFL_TYPE_GRABBER, -1);
4619         if (ret < 0) {
4620                 printk(KERN_ERR "VINO channel A Video4Linux-device "
4621                        "registration failed\n");
4622                 vino_module_cleanup(vino_init_stage);
4623                 return -EINVAL;
4624         }
4625         vino_init_stage++;
4626
4627         ret = video_register_device(vino_drvdata->b.v4l_device,
4628                                     VFL_TYPE_GRABBER, -1);
4629         if (ret < 0) {
4630                 printk(KERN_ERR "VINO channel B Video4Linux-device "
4631                        "registration failed\n");
4632                 vino_module_cleanup(vino_init_stage);
4633                 return -EINVAL;
4634         }
4635         vino_init_stage++;
4636
4637 #if defined(CONFIG_KMOD) && defined(MODULE)
4638         request_module("saa7191");
4639         request_module("indycam");
4640 #endif
4641
4642         dprintk("init complete!\n");
4643
4644         return 0;
4645 }
4646
4647 static void __exit vino_module_exit(void)
4648 {
4649         dprintk("exiting, stage = %d ...\n", vino_init_stage);
4650         vino_module_cleanup(vino_init_stage);
4651         dprintk("cleanup complete, exit!\n");
4652 }
4653
4654 module_init(vino_module_init);
4655 module_exit(vino_module_exit);