drivers/media/video/omap/omap_vout.c

   1 /*
   2  * omap_vout.c
   3  *
   4  * Copyright (C) 2005-2010 Texas Instruments.
   5  *
   6  * This file is licensed under the terms of the GNU General Public License
   7  * version 2. This program is licensed "as is" without any warranty of any
   8  * kind, whether express or implied.
   9  *
  10  * Leveraged code from the OMAP2 camera driver
  11  * Video-for-Linux (Version 2) camera capture driver for
  12  * the OMAP24xx camera controller.
  13  *
  14  * Author: Andy Lowe (source@mvista.com)
  15  *
  16  * Copyright (C) 2004 MontaVista Software, Inc.
  17  * Copyright (C) 2010 Texas Instruments.
  18  *
  19  * History:
  20  * 20-APR-2006 Khasim           Modified VRFB based Rotation,
  21  *                              The image data is always read from 0 degree
  22  *                              view and written
  23  *                              to the virtual space of desired rotation angle
  24  * 4-DEC-2006  Jian             Changed to support better memory management
  25  *
  26  * 17-Nov-2008 Hardik           Changed driver to use video_ioctl2
  27  *
  28  * 23-Feb-2010 Vaibhav H        Modified to use new DSS2 interface
  29  *
  30  */
  31
  32 #include <linux/init.h>
  33 #include <linux/module.h>
  34 #include <linux/vmalloc.h>
  35 #include <linux/sched.h>
  36 #include <linux/types.h>
  37 #include <linux/platform_device.h>
  38 #include <linux/dma-mapping.h>
  39 #include <linux/irq.h>
  40 #include <linux/videodev2.h>
  41 #include <linux/slab.h>
  42
  43 #include <media/videobuf-dma-contig.h>
  44 #include <media/v4l2-device.h>
  45 #include <media/v4l2-ioctl.h>
  46
  47 #include <plat/dma.h>
  48 #include <plat/vram.h>
  49 #include <plat/vrfb.h>
  50 #include <video/omapdss.h>
  51
  52 #include "omap_voutlib.h"
  53 #include "omap_voutdef.h"
  54
  55 MODULE_AUTHOR("Texas Instruments");
  56 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
  57 MODULE_LICENSE("GPL");
  58
  59
  60 /* Driver Configuration macros */
  61 #define VOUT_NAME               "omap_vout"
  62
  63 enum omap_vout_channels {
  64         OMAP_VIDEO1,
  65         OMAP_VIDEO2,
  66 };
  67
  68 enum dma_channel_state {
  69         DMA_CHAN_NOT_ALLOTED,
  70         DMA_CHAN_ALLOTED,
  71 };
  72
  73 #define QQVGA_WIDTH             160
  74 #define QQVGA_HEIGHT            120
  75
  76 /* Max Resolution supported by the driver */
  77 #define VID_MAX_WIDTH           1280    /* Largest width */
  78 #define VID_MAX_HEIGHT          720     /* Largest height */
  79
  80 /* Mimimum requirement is 2x2 for DSS */
  81 #define VID_MIN_WIDTH           2
  82 #define VID_MIN_HEIGHT          2
  83
  84 /* 2048 x 2048 is max res supported by OMAP display controller */
  85 #define MAX_PIXELS_PER_LINE     2048
  86
  87 #define VRFB_TX_TIMEOUT         1000
  88 #define VRFB_NUM_BUFS           4
  89
  90 /* Max buffer size tobe allocated during init */
  91 #define OMAP_VOUT_MAX_BUF_SIZE (VID_MAX_WIDTH*VID_MAX_HEIGHT*4)
  92
  93 static struct videobuf_queue_ops video_vbq_ops;
  94 /* Variables configurable through module params*/
  95 static u32 video1_numbuffers = 3;
  96 static u32 video2_numbuffers = 3;
  97 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  98 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  99 static u32 vid1_static_vrfb_alloc;
 100 static u32 vid2_static_vrfb_alloc;
 101 static int debug;
 102
 103 /* Module parameters */
 104 module_param(video1_numbuffers, uint, S_IRUGO);
 105 MODULE_PARM_DESC(video1_numbuffers,
 106         "Number of buffers to be allocated at init time for Video1 device.");
 107
 108 module_param(video2_numbuffers, uint, S_IRUGO);
 109 MODULE_PARM_DESC(video2_numbuffers,
 110         "Number of buffers to be allocated at init time for Video2 device.");
 111
 112 module_param(video1_bufsize, uint, S_IRUGO);
 113 MODULE_PARM_DESC(video1_bufsize,
 114         "Size of the buffer to be allocated for video1 device");
 115
 116 module_param(video2_bufsize, uint, S_IRUGO);
 117 MODULE_PARM_DESC(video2_bufsize,
 118         "Size of the buffer to be allocated for video2 device");
 119
 120 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
 121 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
 122         "Static allocation of the VRFB buffer for video1 device");
 123
 124 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
 125 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
 126         "Static allocation of the VRFB buffer for video2 device");
 127
 128 module_param(debug, bool, S_IRUGO);
 129 MODULE_PARM_DESC(debug, "Debug level (0-1)");
 130
 131 /* list of image formats supported by OMAP2 video pipelines */
 132 const static struct v4l2_fmtdesc omap_formats[] = {
 133         {
 134                 /* Note:  V4L2 defines RGB565 as:
 135                  *
 136                  *      Byte 0                    Byte 1
 137                  *      g2 g1 g0 r4 r3 r2 r1 r0   b4 b3 b2 b1 b0 g5 g4 g3
 138                  *
 139                  * We interpret RGB565 as:
 140                  *
 141                  *      Byte 0                    Byte 1
 142                  *      g2 g1 g0 b4 b3 b2 b1 b0   r4 r3 r2 r1 r0 g5 g4 g3
 143                  */
 144                 .description = "RGB565, le",
 145                 .pixelformat = V4L2_PIX_FMT_RGB565,
 146         },
 147         {
 148                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
 149                  *  this for RGB24 unpack mode, the last 8 bits are ignored
 150                  * */
 151                 .description = "RGB32, le",
 152                 .pixelformat = V4L2_PIX_FMT_RGB32,
 153         },
 154         {
 155                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
 156                  *        this for RGB24 packed mode
 157                  *
 158                  */
 159                 .description = "RGB24, le",
 160                 .pixelformat = V4L2_PIX_FMT_RGB24,
 161         },
 162         {
 163                 .description = "YUYV (YUV 4:2:2), packed",
 164                 .pixelformat = V4L2_PIX_FMT_YUYV,
 165         },
 166         {
 167                 .description = "UYVY, packed",
 168                 .pixelformat = V4L2_PIX_FMT_UYVY,
 169         },
 170 };
 171
 172 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
 173
 174 /*
 175  * Allocate buffers
 176  */
 177 static unsigned long omap_vout_alloc_buffer(u32 buf_size, u32 *phys_addr)
 178 {
 179         u32 order, size;
 180         unsigned long virt_addr, addr;
 181
 182         size = PAGE_ALIGN(buf_size);
 183         order = get_order(size);
 184         virt_addr = __get_free_pages(GFP_KERNEL | GFP_DMA, order);
 185         addr = virt_addr;
 186
 187         if (virt_addr) {
 188                 while (size > 0) {
 189                         SetPageReserved(virt_to_page(addr));
 190                         addr += PAGE_SIZE;
 191                         size -= PAGE_SIZE;
 192                 }
 193         }
 194         *phys_addr = (u32) virt_to_phys((void *) virt_addr);
 195         return virt_addr;
 196 }
 197
 198 /*
 199  * Free buffers
 200  */
 201 static void omap_vout_free_buffer(unsigned long virtaddr, u32 buf_size)
 202 {
 203         u32 order, size;
 204         unsigned long addr = virtaddr;
 205
 206         size = PAGE_ALIGN(buf_size);
 207         order = get_order(size);
 208
 209         while (size > 0) {
 210                 ClearPageReserved(virt_to_page(addr));
 211                 addr += PAGE_SIZE;
 212                 size -= PAGE_SIZE;
 213         }
 214         free_pages((unsigned long) virtaddr, order);
 215 }
 216
 217 /*
 218  * Function for allocating video buffers
 219  */
 220 static int omap_vout_allocate_vrfb_buffers(struct omap_vout_device *vout,
 221                 unsigned int *count, int startindex)
 222 {
 223         int i, j;
 224
 225         for (i = 0; i < *count; i++) {
 226                 if (!vout->smsshado_virt_addr[i]) {
 227                         vout->smsshado_virt_addr[i] =
 228                                 omap_vout_alloc_buffer(vout->smsshado_size,
 229                                                 &vout->smsshado_phy_addr[i]);
 230                 }
 231                 if (!vout->smsshado_virt_addr[i] && startindex != -1) {
 232                         if (V4L2_MEMORY_MMAP == vout->memory && i >= startindex)
 233                                 break;
 234                 }
 235                 if (!vout->smsshado_virt_addr[i]) {
 236                         for (j = 0; j < i; j++) {
 237                                 omap_vout_free_buffer(
 238                                                 vout->smsshado_virt_addr[j],
 239                                                 vout->smsshado_size);
 240                                 vout->smsshado_virt_addr[j] = 0;
 241                                 vout->smsshado_phy_addr[j] = 0;
 242                         }
 243                         *count = 0;
 244                         return -ENOMEM;
 245                 }
 246                 memset((void *) vout->smsshado_virt_addr[i], 0,
 247                                 vout->smsshado_size);
 248         }
 249         return 0;
 250 }
 251
 252 /*
 253  * Try format
 254  */
 255 static int omap_vout_try_format(struct v4l2_pix_format *pix)
 256 {
 257         int ifmt, bpp = 0;
 258
 259         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
 260                                                 (u32)VID_MAX_HEIGHT);
 261         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
 262
 263         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
 264                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
 265                         break;
 266         }
 267
 268         if (ifmt == NUM_OUTPUT_FORMATS)
 269                 ifmt = 0;
 270
 271         pix->pixelformat = omap_formats[ifmt].pixelformat;
 272         pix->field = V4L2_FIELD_ANY;
 273         pix->priv = 0;
 274
 275         switch (pix->pixelformat) {
 276         case V4L2_PIX_FMT_YUYV:
 277         case V4L2_PIX_FMT_UYVY:
 278         default:
 279                 pix->colorspace = V4L2_COLORSPACE_JPEG;
 280                 bpp = YUYV_BPP;
 281                 break;
 282         case V4L2_PIX_FMT_RGB565:
 283         case V4L2_PIX_FMT_RGB565X:
 284                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 285                 bpp = RGB565_BPP;
 286                 break;
 287         case V4L2_PIX_FMT_RGB24:
 288                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 289                 bpp = RGB24_BPP;
 290                 break;
 291         case V4L2_PIX_FMT_RGB32:
 292         case V4L2_PIX_FMT_BGR32:
 293                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 294                 bpp = RGB32_BPP;
 295                 break;
 296         }
 297         pix->bytesperline = pix->width * bpp;
 298         pix->sizeimage = pix->bytesperline * pix->height;
 299
 300         return bpp;
 301 }
 302
 303 /*
 304  * omap_vout_uservirt_to_phys: This inline function is used to convert user
 305  * space virtual address to physical address.
 306  */
 307 static u32 omap_vout_uservirt_to_phys(u32 virtp)
 308 {
 309         unsigned long physp = 0;
 310         struct vm_area_struct *vma;
 311         struct mm_struct *mm = current->mm;
 312
 313         vma = find_vma(mm, virtp);
 314         /* For kernel direct-mapped memory, take the easy way */
 315         if (virtp >= PAGE_OFFSET) {
 316                 physp = virt_to_phys((void *) virtp);
 317         } else if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
 318                 /* this will catch, kernel-allocated, mmaped-to-usermode
 319                    addresses */
 320                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
 321         } else {
 322                 /* otherwise, use get_user_pages() for general userland pages */
 323                 int res, nr_pages = 1;
 324                 struct page *pages;
 325                 down_read(&current->mm->mmap_sem);
 326
 327                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
 328                                 0, &pages, NULL);
 329                 up_read(&current->mm->mmap_sem);
 330
 331                 if (res == nr_pages) {
 332                         physp =  __pa(page_address(&pages[0]) +
 333                                         (virtp & ~PAGE_MASK));
 334                 } else {
 335                         printk(KERN_WARNING VOUT_NAME
 336                                         "get_user_pages failed\n");
 337                         return 0;
 338                 }
 339         }
 340
 341         return physp;
 342 }
 343
 344 /*
 345  * Wakes up the application once the DMA transfer to VRFB space is completed.
 346  */
 347 static void omap_vout_vrfb_dma_tx_callback(int lch, u16 ch_status, void *data)
 348 {
 349         struct vid_vrfb_dma *t = (struct vid_vrfb_dma *) data;
 350
 351         t->tx_status = 1;
 352         wake_up_interruptible(&t->wait);
 353 }
 354
 355 /*
 356  * Release the VRFB context once the module exits
 357  */
 358 static void omap_vout_release_vrfb(struct omap_vout_device *vout)
 359 {
 360         int i;
 361
 362         for (i = 0; i < VRFB_NUM_BUFS; i++)
 363                 omap_vrfb_release_ctx(&vout->vrfb_context[i]);
 364
 365         if (vout->vrfb_dma_tx.req_status == DMA_CHAN_ALLOTED) {
 366                 vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
 367                 omap_free_dma(vout->vrfb_dma_tx.dma_ch);
 368         }
 369 }
 370
 371 /*
 372  * Return true if rotation is 90 or 270
 373  */
 374 static inline int rotate_90_or_270(const struct omap_vout_device *vout)
 375 {
 376         return (vout->rotation == dss_rotation_90_degree ||
 377                         vout->rotation == dss_rotation_270_degree);
 378 }
 379
 380 /*
 381  * Return true if rotation is enabled
 382  */
 383 static inline int rotation_enabled(const struct omap_vout_device *vout)
 384 {
 385         return vout->rotation || vout->mirror;
 386 }
 387
 388 /*
 389  * Reverse the rotation degree if mirroring is enabled
 390  */
 391 static inline int calc_rotation(const struct omap_vout_device *vout)
 392 {
 393         if (!vout->mirror)
 394                 return vout->rotation;
 395
 396         switch (vout->rotation) {
 397         case dss_rotation_90_degree:
 398                 return dss_rotation_270_degree;
 399         case dss_rotation_270_degree:
 400                 return dss_rotation_90_degree;
 401         case dss_rotation_180_degree:
 402                 return dss_rotation_0_degree;
 403         default:
 404                 return dss_rotation_180_degree;
 405         }
 406 }
 407
 408 /*
 409  * Free the V4L2 buffers
 410  */
 411 static void omap_vout_free_buffers(struct omap_vout_device *vout)
 412 {
 413         int i, numbuffers;
 414
 415         /* Allocate memory for the buffers */
 416         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
 417         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
 418
 419         for (i = 0; i < numbuffers; i++) {
 420                 omap_vout_free_buffer(vout->buf_virt_addr[i],
 421                                 vout->buffer_size);
 422                 vout->buf_phy_addr[i] = 0;
 423                 vout->buf_virt_addr[i] = 0;
 424         }
 425 }
 426
 427 /*
 428  * Free VRFB buffers
 429  */
 430 static void omap_vout_free_vrfb_buffers(struct omap_vout_device *vout)
 431 {
 432         int j;
 433
 434         for (j = 0; j < VRFB_NUM_BUFS; j++) {
 435                 omap_vout_free_buffer(vout->smsshado_virt_addr[j],
 436                                 vout->smsshado_size);
 437                 vout->smsshado_virt_addr[j] = 0;
 438                 vout->smsshado_phy_addr[j] = 0;
 439         }
 440 }
 441
 442 /*
 443  * Allocate the buffers for the VRFB space.  Data is copied from V4L2
 444  * buffers to the VRFB buffers using the DMA engine.
 445  */
 446 static int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout,
 447                           unsigned int *count, unsigned int startindex)
 448 {
 449         int i;
 450         bool yuv_mode;
 451
 452         /* Allocate the VRFB buffers only if the buffers are not
 453          * allocated during init time.
 454          */
 455         if ((rotation_enabled(vout)) && !vout->vrfb_static_allocation)
 456                 if (omap_vout_allocate_vrfb_buffers(vout, count, startindex))
 457                         return -ENOMEM;
 458
 459         if (vout->dss_mode == OMAP_DSS_COLOR_YUV2 ||
 460                         vout->dss_mode == OMAP_DSS_COLOR_UYVY)
 461                 yuv_mode = true;
 462         else
 463                 yuv_mode = false;
 464
 465         for (i = 0; i < *count; i++)
 466                 omap_vrfb_setup(&vout->vrfb_context[i],
 467                                 vout->smsshado_phy_addr[i], vout->pix.width,
 468                                 vout->pix.height, vout->bpp, yuv_mode);
 469
 470         return 0;
 471 }
 472
 473 /*
 474  * Convert V4L2 rotation to DSS rotation
 475  *      V4L2 understand 0, 90, 180, 270.
 476  *      Convert to 0, 1, 2 and 3 respectively for DSS
 477  */
 478 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
 479                         enum dss_rotation *rotation, bool mirror)
 480 {
 481         int ret = 0;
 482
 483         switch (v4l2_rotation) {
 484         case 90:
 485                 *rotation = dss_rotation_90_degree;
 486                 break;
 487         case 180:
 488                 *rotation = dss_rotation_180_degree;
 489                 break;
 490         case 270:
 491                 *rotation = dss_rotation_270_degree;
 492                 break;
 493         case 0:
 494                 *rotation = dss_rotation_0_degree;
 495                 break;
 496         default:
 497                 ret = -EINVAL;
 498         }
 499         return ret;
 500 }
 501
 502 /*
 503  * Calculate the buffer offsets from which the streaming should
 504  * start. This offset calculation is mainly required because of
 505  * the VRFB 32 pixels alignment with rotation.
 506  */
 507 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
 508 {
 509         struct omap_overlay *ovl;
 510         enum dss_rotation rotation;
 511         struct omapvideo_info *ovid;
 512         bool mirroring = vout->mirror;
 513         struct omap_dss_device *cur_display;
 514         struct v4l2_rect *crop = &vout->crop;
 515         struct v4l2_pix_format *pix = &vout->pix;
 516         int *cropped_offset = &vout->cropped_offset;
 517         int vr_ps = 1, ps = 2, temp_ps = 2;
 518         int offset = 0, ctop = 0, cleft = 0, line_length = 0;
 519
 520         ovid = &vout->vid_info;
 521         ovl = ovid->overlays[0];
 522         /* get the display device attached to the overlay */
 523         if (!ovl->manager || !ovl->manager->device)
 524                 return -1;
 525
 526         cur_display = ovl->manager->device;
 527         rotation = calc_rotation(vout);
 528
 529         if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
 530                         V4L2_PIX_FMT_UYVY == pix->pixelformat) {
 531                 if (rotation_enabled(vout)) {
 532                         /*
 533                          * ps    - Actual pixel size for YUYV/UYVY for
 534                          *         VRFB/Mirroring is 4 bytes
 535                          * vr_ps - Virtually pixel size for YUYV/UYVY is
 536                          *         2 bytes
 537                          */
 538                         ps = 4;
 539                         vr_ps = 2;
 540                 } else {
 541                         ps = 2; /* otherwise the pixel size is 2 byte */
 542                 }
 543         } else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat) {
 544                 ps = 4;
 545         } else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat) {
 546                 ps = 3;
 547         }
 548         vout->ps = ps;
 549         vout->vr_ps = vr_ps;
 550
 551         if (rotation_enabled(vout)) {
 552                 line_length = MAX_PIXELS_PER_LINE;
 553                 ctop = (pix->height - crop->height) - crop->top;
 554                 cleft = (pix->width - crop->width) - crop->left;
 555         } else {
 556                 line_length = pix->width;
 557         }
 558         vout->line_length = line_length;
 559         switch (rotation) {
 560         case dss_rotation_90_degree:
 561                 offset = vout->vrfb_context[0].yoffset *
 562                         vout->vrfb_context[0].bytespp;
 563                 temp_ps = ps / vr_ps;
 564                 if (mirroring == 0) {
 565                         *cropped_offset = offset + line_length *
 566                                 temp_ps * cleft + crop->top * temp_ps;
 567                 } else {
 568                         *cropped_offset = offset + line_length * temp_ps *
 569                                 cleft + crop->top * temp_ps + (line_length *
 570                                 ((crop->width / (vr_ps)) - 1) * ps);
 571                 }
 572                 break;
 573         case dss_rotation_180_degree:
 574                 offset = ((MAX_PIXELS_PER_LINE * vout->vrfb_context[0].yoffset *
 575                         vout->vrfb_context[0].bytespp) +
 576                         (vout->vrfb_context[0].xoffset *
 577                         vout->vrfb_context[0].bytespp));
 578                 if (mirroring == 0) {
 579                         *cropped_offset = offset + (line_length * ps * ctop) +
 580                                 (cleft / vr_ps) * ps;
 581
 582                 } else {
 583                         *cropped_offset = offset + (line_length * ps * ctop) +
 584                                 (cleft / vr_ps) * ps + (line_length *
 585                                 (crop->height - 1) * ps);
 586                 }
 587                 break;
 588         case dss_rotation_270_degree:
 589                 offset = MAX_PIXELS_PER_LINE * vout->vrfb_context[0].xoffset *
 590                         vout->vrfb_context[0].bytespp;
 591                 temp_ps = ps / vr_ps;
 592                 if (mirroring == 0) {
 593                         *cropped_offset = offset + line_length *
 594                             temp_ps * crop->left + ctop * ps;
 595                 } else {
 596                         *cropped_offset = offset + line_length *
 597                                 temp_ps * crop->left + ctop * ps +
 598                                 (line_length * ((crop->width / vr_ps) - 1) *
 599                                  ps);
 600                 }
 601                 break;
 602         case dss_rotation_0_degree:
 603                 if (mirroring == 0) {
 604                         *cropped_offset = (line_length * ps) *
 605                                 crop->top + (crop->left / vr_ps) * ps;
 606                 } else {
 607                         *cropped_offset = (line_length * ps) *
 608                                 crop->top + (crop->left / vr_ps) * ps +
 609                                 (line_length * (crop->height - 1) * ps);
 610                 }
 611                 break;
 612         default:
 613                 *cropped_offset = (line_length * ps * crop->top) /
 614                         vr_ps + (crop->left * ps) / vr_ps +
 615                         ((crop->width / vr_ps) - 1) * ps;
 616                 break;
 617         }
 618         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
 619                         __func__, *cropped_offset);
 620         return 0;
 621 }
 622
 623 /*
 624  * Convert V4L2 pixel format to DSS pixel format
 625  */
 626 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
 627 {
 628         struct omap_overlay *ovl;
 629         struct omapvideo_info *ovid;
 630         struct v4l2_pix_format *pix = &vout->pix;
 631         enum omap_color_mode mode;
 632
 633         ovid = &vout->vid_info;
 634         ovl = ovid->overlays[0];
 635
 636         switch (pix->pixelformat) {
 637         case 0:
 638                 break;
 639         case V4L2_PIX_FMT_YUYV:
 640                 mode = OMAP_DSS_COLOR_YUV2;
 641                 break;
 642         case V4L2_PIX_FMT_UYVY:
 643                 mode = OMAP_DSS_COLOR_UYVY;
 644                 break;
 645         case V4L2_PIX_FMT_RGB565:
 646                 mode = OMAP_DSS_COLOR_RGB16;
 647                 break;
 648         case V4L2_PIX_FMT_RGB24:
 649                 mode = OMAP_DSS_COLOR_RGB24P;
 650                 break;
 651         case V4L2_PIX_FMT_RGB32:
 652                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
 653                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
 654                 break;
 655         case V4L2_PIX_FMT_BGR32:
 656                 mode = OMAP_DSS_COLOR_RGBX32;
 657                 break;
 658         default:
 659                 mode = -EINVAL;
 660         }
 661         return mode;
 662 }
 663
 664 /*
 665  * Setup the overlay
 666  */
 667 int omapvid_setup_overlay(struct omap_vout_device *vout,
 668                 struct omap_overlay *ovl, int posx, int posy, int outw,
 669                 int outh, u32 addr)
 670 {
 671         int ret = 0;
 672         struct omap_overlay_info info;
 673         int cropheight, cropwidth, pixheight, pixwidth;
 674
 675         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
 676                         (outw != vout->pix.width || outh != vout->pix.height)) {
 677                 ret = -EINVAL;
 678                 goto setup_ovl_err;
 679         }
 680
 681         vout->dss_mode = video_mode_to_dss_mode(vout);
 682         if (vout->dss_mode == -EINVAL) {
 683                 ret = -EINVAL;
 684                 goto setup_ovl_err;
 685         }
 686
 687         /* Setup the input plane parameters according to
 688          * rotation value selected.
 689          */
 690         if (rotate_90_or_270(vout)) {
 691                 cropheight = vout->crop.width;
 692                 cropwidth = vout->crop.height;
 693                 pixheight = vout->pix.width;
 694                 pixwidth = vout->pix.height;
 695         } else {
 696                 cropheight = vout->crop.height;
 697                 cropwidth = vout->crop.width;
 698                 pixheight = vout->pix.height;
 699                 pixwidth = vout->pix.width;
 700         }
 701
 702         ovl->get_overlay_info(ovl, &info);
 703         info.paddr = addr;
 704         info.vaddr = NULL;
 705         info.width = cropwidth;
 706         info.height = cropheight;
 707         info.color_mode = vout->dss_mode;
 708         info.mirror = vout->mirror;
 709         info.pos_x = posx;
 710         info.pos_y = posy;
 711         info.out_width = outw;
 712         info.out_height = outh;
 713         info.global_alpha = vout->win.global_alpha;
 714         if (!rotation_enabled(vout)) {
 715                 info.rotation = 0;
 716                 info.rotation_type = OMAP_DSS_ROT_DMA;
 717                 info.screen_width = pixwidth;
 718         } else {
 719                 info.rotation = vout->rotation;
 720                 info.rotation_type = OMAP_DSS_ROT_VRFB;
 721                 info.screen_width = 2048;
 722         }
 723
 724         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 725                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
 726                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
 727                 "out_height=%d rotation_type=%d screen_width=%d\n",
 728                 __func__, info.enabled, info.paddr, info.width, info.height,
 729                 info.color_mode, info.rotation, info.mirror, info.pos_x,
 730                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
 731                 info.screen_width);
 732
 733         ret = ovl->set_overlay_info(ovl, &info);
 734         if (ret)
 735                 goto setup_ovl_err;
 736
 737         return 0;
 738
 739 setup_ovl_err:
 740         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
 741         return ret;
 742 }
 743
 744 /*
 745  * Initialize the overlay structure
 746  */
 747 int omapvid_init(struct omap_vout_device *vout, u32 addr)
 748 {
 749         int ret = 0, i;
 750         struct v4l2_window *win;
 751         struct omap_overlay *ovl;
 752         int posx, posy, outw, outh, temp;
 753         struct omap_video_timings *timing;
 754         struct omapvideo_info *ovid = &vout->vid_info;
 755
 756         win = &vout->win;
 757         for (i = 0; i < ovid->num_overlays; i++) {
 758                 ovl = ovid->overlays[i];
 759                 if (!ovl->manager || !ovl->manager->device)
 760                         return -EINVAL;
 761
 762                 timing = &ovl->manager->device->panel.timings;
 763
 764                 outw = win->w.width;
 765                 outh = win->w.height;
 766                 switch (vout->rotation) {
 767                 case dss_rotation_90_degree:
 768                         /* Invert the height and width for 90
 769                          * and 270 degree rotation
 770                          */
 771                         temp = outw;
 772                         outw = outh;
 773                         outh = temp;
 774                         posy = (timing->y_res - win->w.width) - win->w.left;
 775                         posx = win->w.top;
 776                         break;
 777
 778                 case dss_rotation_180_degree:
 779                         posx = (timing->x_res - win->w.width) - win->w.left;
 780                         posy = (timing->y_res - win->w.height) - win->w.top;
 781                         break;
 782
 783                 case dss_rotation_270_degree:
 784                         temp = outw;
 785                         outw = outh;
 786                         outh = temp;
 787                         posy = win->w.left;
 788                         posx = (timing->x_res - win->w.height) - win->w.top;
 789                         break;
 790
 791                 default:
 792                         posx = win->w.left;
 793                         posy = win->w.top;
 794                         break;
 795                 }
 796
 797                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
 798                                 outw, outh, addr);
 799                 if (ret)
 800                         goto omapvid_init_err;
 801         }
 802         return 0;
 803
 804 omapvid_init_err:
 805         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
 806         return ret;
 807 }
 808
 809 /*
 810  * Apply the changes set the go bit of DSS
 811  */
 812 int omapvid_apply_changes(struct omap_vout_device *vout)
 813 {
 814         int i;
 815         struct omap_overlay *ovl;
 816         struct omapvideo_info *ovid = &vout->vid_info;
 817
 818         for (i = 0; i < ovid->num_overlays; i++) {
 819                 ovl = ovid->overlays[i];
 820                 if (!ovl->manager || !ovl->manager->device)
 821                         return -EINVAL;
 822                 ovl->manager->apply(ovl->manager);
 823         }
 824
 825         return 0;
 826 }
 827
 828 void omap_vout_isr(void *arg, unsigned int irqstatus)
 829 {
 830         int ret;
 831         u32 addr, fid;
 832         struct omap_overlay *ovl;
 833         struct timeval timevalue;
 834         struct omapvideo_info *ovid;
 835         struct omap_dss_device *cur_display;
 836         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
 837
 838         if (!vout->streaming)
 839                 return;
 840
 841         ovid = &vout->vid_info;
 842         ovl = ovid->overlays[0];
 843         /* get the display device attached to the overlay */
 844         if (!ovl->manager || !ovl->manager->device)
 845                 return;
 846
 847         cur_display = ovl->manager->device;
 848
 849         spin_lock(&vout->vbq_lock);
 850         do_gettimeofday(&timevalue);
 851         if (cur_display->type == OMAP_DISPLAY_TYPE_DPI) {
 852                 if (!(irqstatus & DISPC_IRQ_VSYNC))
 853                         goto vout_isr_err;
 854
 855                 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
 856                         vout->cur_frm->ts = timevalue;
 857                         vout->cur_frm->state = VIDEOBUF_DONE;
 858                         wake_up_interruptible(&vout->cur_frm->done);
 859                         vout->cur_frm = vout->next_frm;
 860                 }
 861                 vout->first_int = 0;
 862                 if (list_empty(&vout->dma_queue))
 863                         goto vout_isr_err;
 864
 865                 vout->next_frm = list_entry(vout->dma_queue.next,
 866                                 struct videobuf_buffer, queue);
 867                 list_del(&vout->next_frm->queue);
 868
 869                 vout->next_frm->state = VIDEOBUF_ACTIVE;
 870
 871                 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
 872                         + vout->cropped_offset;
 873
 874                 /* First save the configuration in ovelray structure */
 875                 ret = omapvid_init(vout, addr);
 876                 if (ret)
 877                         printk(KERN_ERR VOUT_NAME
 878                                         "failed to set overlay info\n");
 879                 /* Enable the pipeline and set the Go bit */
 880                 ret = omapvid_apply_changes(vout);
 881                 if (ret)
 882                         printk(KERN_ERR VOUT_NAME "failed to change mode\n");
 883         } else {
 884
 885                 if (vout->first_int) {
 886                         vout->first_int = 0;
 887                         goto vout_isr_err;
 888                 }
 889                 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
 890                         fid = 1;
 891                 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
 892                         fid = 0;
 893                 else
 894                         goto vout_isr_err;
 895
 896                 vout->field_id ^= 1;
 897                 if (fid != vout->field_id) {
 898                         if (0 == fid)
 899                                 vout->field_id = fid;
 900
 901                         goto vout_isr_err;
 902                 }
 903                 if (0 == fid) {
 904                         if (vout->cur_frm == vout->next_frm)
 905                                 goto vout_isr_err;
 906
 907                         vout->cur_frm->ts = timevalue;
 908                         vout->cur_frm->state = VIDEOBUF_DONE;
 909                         wake_up_interruptible(&vout->cur_frm->done);
 910                         vout->cur_frm = vout->next_frm;
 911                 } else if (1 == fid) {
 912                         if (list_empty(&vout->dma_queue) ||
 913                                         (vout->cur_frm != vout->next_frm))
 914                                 goto vout_isr_err;
 915
 916                         vout->next_frm = list_entry(vout->dma_queue.next,
 917                                         struct videobuf_buffer, queue);
 918                         list_del(&vout->next_frm->queue);
 919
 920                         vout->next_frm->state = VIDEOBUF_ACTIVE;
 921                         addr = (unsigned long)
 922                                 vout->queued_buf_addr[vout->next_frm->i] +
 923                                 vout->cropped_offset;
 924                         /* First save the configuration in ovelray structure */
 925                         ret = omapvid_init(vout, addr);
 926                         if (ret)
 927                                 printk(KERN_ERR VOUT_NAME
 928                                                 "failed to set overlay info\n");
 929                         /* Enable the pipeline and set the Go bit */
 930                         ret = omapvid_apply_changes(vout);
 931                         if (ret)
 932                                 printk(KERN_ERR VOUT_NAME
 933                                                 "failed to change mode\n");
 934                 }
 935
 936         }
 937
 938 vout_isr_err:
 939         spin_unlock(&vout->vbq_lock);
 940 }
 941
 942
 943 /* Video buffer call backs */
 944
 945 /*
 946  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
 947  * called. This is used to setup buffers and return size and count of
 948  * buffers allocated. After the call to this buffer, videobuf layer will
 949  * setup buffer queue depending on the size and count of buffers
 950  */
 951 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 952                           unsigned int *size)
 953 {
 954         int startindex = 0, i, j;
 955         u32 phy_addr = 0, virt_addr = 0;
 956         struct omap_vout_device *vout = q->priv_data;
 957
 958         if (!vout)
 959                 return -EINVAL;
 960
 961         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
 962                 return -EINVAL;
 963
 964         startindex = (vout->vid == OMAP_VIDEO1) ?
 965                 video1_numbuffers : video2_numbuffers;
 966         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
 967                 *count = startindex;
 968
 969         if ((rotation_enabled(vout)) && *count > VRFB_NUM_BUFS)
 970                 *count = VRFB_NUM_BUFS;
 971
 972         /* If rotation is enabled, allocate memory for VRFB space also */
 973         if (rotation_enabled(vout))
 974                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
 975                         return -ENOMEM;
 976
 977         if (V4L2_MEMORY_MMAP != vout->memory)
 978                 return 0;
 979
 980         /* Now allocated the V4L2 buffers */
 981         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
 982         startindex = (vout->vid == OMAP_VIDEO1) ?
 983                 video1_numbuffers : video2_numbuffers;
 984
 985         /* Check the size of the buffer */
 986         if (*size > vout->buffer_size) {
 987                 v4l2_err(&vout->vid_dev->v4l2_dev,
 988                                 "buffer allocation mismatch [%u] [%u]\n",
 989                                 *size, vout->buffer_size);
 990                 return -ENOMEM;
 991         }
 992
 993         for (i = startindex; i < *count; i++) {
 994                 vout->buffer_size = *size;
 995
 996                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
 997                                 &phy_addr);
 998                 if (!virt_addr) {
 999                         if (!rotation_enabled(vout))
1000                                 break;
1001                         /* Free the VRFB buffers if no space for V4L2 buffers */
1002                         for (j = i; j < *count; j++) {
1003                                 omap_vout_free_buffer(
1004                                                 vout->smsshado_virt_addr[j],
1005                                                 vout->smsshado_size);
1006                                 vout->smsshado_virt_addr[j] = 0;
1007                                 vout->smsshado_phy_addr[j] = 0;
1008                         }
1009                 }
1010                 vout->buf_virt_addr[i] = virt_addr;
1011                 vout->buf_phy_addr[i] = phy_addr;
1012         }
1013         *count = vout->buffer_allocated = i;
1014
1015         return 0;
1016 }
1017
1018 /*
1019  * Free the V4L2 buffers additionally allocated than default
1020  * number of buffers and free all the VRFB buffers
1021  */
1022 static void omap_vout_free_allbuffers(struct omap_vout_device *vout)
1023 {
1024         int num_buffers = 0, i;
1025
1026         num_buffers = (vout->vid == OMAP_VIDEO1) ?
1027                 video1_numbuffers : video2_numbuffers;
1028
1029         for (i = num_buffers; i < vout->buffer_allocated; i++) {
1030                 if (vout->buf_virt_addr[i])
1031                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1032                                         vout->buffer_size);
1033
1034                 vout->buf_virt_addr[i] = 0;
1035                 vout->buf_phy_addr[i] = 0;
1036         }
1037         /* Free the VRFB buffers only if they are allocated
1038          * during reqbufs.  Don't free if init time allocated
1039          */
1040         if (!vout->vrfb_static_allocation) {
1041                 for (i = 0; i < VRFB_NUM_BUFS; i++) {
1042                         if (vout->smsshado_virt_addr[i]) {
1043                                 omap_vout_free_buffer(
1044                                                 vout->smsshado_virt_addr[i],
1045                                                 vout->smsshado_size);
1046                                 vout->smsshado_virt_addr[i] = 0;
1047                                 vout->smsshado_phy_addr[i] = 0;
1048                         }
1049                 }
1050         }
1051         vout->buffer_allocated = num_buffers;
1052 }
1053
1054 /*
1055  * This function will be called when VIDIOC_QBUF ioctl is called.
1056  * It prepare buffers before give out for the display. This function
1057  * converts user space virtual address into physical address if userptr memory
1058  * exchange mechanism is used. If rotation is enabled, it copies entire
1059  * buffer into VRFB memory space before giving it to the DSS.
1060  */
1061 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
1062                             struct videobuf_buffer *vb,
1063                             enum v4l2_field field)
1064 {
1065         dma_addr_t dmabuf;
1066         struct vid_vrfb_dma *tx;
1067         enum dss_rotation rotation;
1068         struct omap_vout_device *vout = q->priv_data;
1069         u32 dest_frame_index = 0, src_element_index = 0;
1070         u32 dest_element_index = 0, src_frame_index = 0;
1071         u32 elem_count = 0, frame_count = 0, pixsize = 2;
1072
1073         if (VIDEOBUF_NEEDS_INIT == vb->state) {
1074                 vb->width = vout->pix.width;
1075                 vb->height = vout->pix.height;
1076                 vb->size = vb->width * vb->height * vout->bpp;
1077                 vb->field = field;
1078         }
1079         vb->state = VIDEOBUF_PREPARED;
1080         /* if user pointer memory mechanism is used, get the physical
1081          * address of the buffer
1082          */
1083         if (V4L2_MEMORY_USERPTR == vb->memory) {
1084                 if (0 == vb->baddr)
1085                         return -EINVAL;
1086                 /* Physical address */
1087                 vout->queued_buf_addr[vb->i] = (u8 *)
1088                         omap_vout_uservirt_to_phys(vb->baddr);
1089         } else {
1090                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
1091         }
1092
1093         if (!rotation_enabled(vout))
1094                 return 0;
1095
1096         dmabuf = vout->buf_phy_addr[vb->i];
1097         /* If rotation is enabled, copy input buffer into VRFB
1098          * memory space using DMA. We are copying input buffer
1099          * into VRFB memory space of desired angle and DSS will
1100          * read image VRFB memory for 0 degree angle
1101          */
1102         pixsize = vout->bpp * vout->vrfb_bpp;
1103         /*
1104          * DMA transfer in double index mode
1105          */
1106
1107         /* Frame index */
1108         dest_frame_index = ((MAX_PIXELS_PER_LINE * pixsize) -
1109                         (vout->pix.width * vout->bpp)) + 1;
1110
1111         /* Source and destination parameters */
1112         src_element_index = 0;
1113         src_frame_index = 0;
1114         dest_element_index = 1;
1115         /* Number of elements per frame */
1116         elem_count = vout->pix.width * vout->bpp;
1117         frame_count = vout->pix.height;
1118         tx = &vout->vrfb_dma_tx;
1119         tx->tx_status = 0;
1120         omap_set_dma_transfer_params(tx->dma_ch, OMAP_DMA_DATA_TYPE_S32,
1121                         (elem_count / 4), frame_count, OMAP_DMA_SYNC_ELEMENT,
1122                         tx->dev_id, 0x0);
1123         /* src_port required only for OMAP1 */
1124         omap_set_dma_src_params(tx->dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
1125                         dmabuf, src_element_index, src_frame_index);
1126         /*set dma source burst mode for VRFB */
1127         omap_set_dma_src_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
1128         rotation = calc_rotation(vout);
1129
1130         /* dest_port required only for OMAP1 */
1131         omap_set_dma_dest_params(tx->dma_ch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
1132                         vout->vrfb_context[vb->i].paddr[0], dest_element_index,
1133                         dest_frame_index);
1134         /*set dma dest burst mode for VRFB */
1135         omap_set_dma_dest_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
1136         omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE, 0x20, 0);
1137
1138         omap_start_dma(tx->dma_ch);
1139         interruptible_sleep_on_timeout(&tx->wait, VRFB_TX_TIMEOUT);
1140
1141         if (tx->tx_status == 0) {
1142                 omap_stop_dma(tx->dma_ch);
1143                 return -EINVAL;
1144         }
1145         /* Store buffers physical address into an array. Addresses
1146          * from this array will be used to configure DSS */
1147         vout->queued_buf_addr[vb->i] = (u8 *)
1148                 vout->vrfb_context[vb->i].paddr[rotation];
1149         return 0;
1150 }
1151
1152 /*
1153  * Buffer queue function will be called from the videobuf layer when _QBUF
1154  * ioctl is called. It is used to enqueue buffer, which is ready to be
1155  * displayed.
1156  */
1157 static void omap_vout_buffer_queue(struct videobuf_queue *q,
1158                           struct videobuf_buffer *vb)
1159 {
1160         struct omap_vout_device *vout = q->priv_data;
1161
1162         /* Driver is also maintainig a queue. So enqueue buffer in the driver
1163          * queue */
1164         list_add_tail(&vb->queue, &vout->dma_queue);
1165
1166         vb->state = VIDEOBUF_QUEUED;
1167 }
1168
1169 /*
1170  * Buffer release function is called from videobuf layer to release buffer
1171  * which are already allocated
1172  */
1173 static void omap_vout_buffer_release(struct videobuf_queue *q,
1174                             struct videobuf_buffer *vb)
1175 {
1176         struct omap_vout_device *vout = q->priv_data;
1177
1178         vb->state = VIDEOBUF_NEEDS_INIT;
1179
1180         if (V4L2_MEMORY_MMAP != vout->memory)
1181                 return;
1182 }
1183
1184 /*
1185  *  File operations
1186  */
1187 static void omap_vout_vm_open(struct vm_area_struct *vma)
1188 {
1189         struct omap_vout_device *vout = vma->vm_private_data;
1190
1191         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1192                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
1193         vout->mmap_count++;
1194 }
1195
1196 static void omap_vout_vm_close(struct vm_area_struct *vma)
1197 {
1198         struct omap_vout_device *vout = vma->vm_private_data;
1199
1200         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1201                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
1202         vout->mmap_count--;
1203 }
1204
1205 static struct vm_operations_struct omap_vout_vm_ops = {
1206         .open   = omap_vout_vm_open,
1207         .close  = omap_vout_vm_close,
1208 };
1209
1210 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
1211 {
1212         int i;
1213         void *pos;
1214         unsigned long start = vma->vm_start;
1215         unsigned long size = (vma->vm_end - vma->vm_start);
1216         struct omap_vout_device *vout = file->private_data;
1217         struct videobuf_queue *q = &vout->vbq;
1218
1219         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1220                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
1221                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
1222
1223         /* look for the buffer to map */
1224         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
1225                 if (NULL == q->bufs[i])
1226                         continue;
1227                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
1228                         continue;
1229                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
1230                         break;
1231         }
1232
1233         if (VIDEO_MAX_FRAME == i) {
1234                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1235                                 "offset invalid [offset=0x%lx]\n",
1236                                 (vma->vm_pgoff << PAGE_SHIFT));
1237                 return -EINVAL;
1238         }
1239         /* Check the size of the buffer */
1240         if (size > vout->buffer_size) {
1241                 v4l2_err(&vout->vid_dev->v4l2_dev,
1242                                 "insufficient memory [%lu] [%u]\n",
1243                                 size, vout->buffer_size);
1244                 return -ENOMEM;
1245         }
1246
1247         q->bufs[i]->baddr = vma->vm_start;
1248
1249         vma->vm_flags |= VM_RESERVED;
1250         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1251         vma->vm_ops = &omap_vout_vm_ops;
1252         vma->vm_private_data = (void *) vout;
1253         pos = (void *)vout->buf_virt_addr[i];
1254         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
1255         while (size > 0) {
1256                 unsigned long pfn;
1257                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
1258                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
1259                         return -EAGAIN;
1260                 start += PAGE_SIZE;
1261                 pos += PAGE_SIZE;
1262                 size -= PAGE_SIZE;
1263         }
1264         vout->mmap_count++;
1265         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1266
1267         return 0;
1268 }
1269
1270 static int omap_vout_release(struct file *file)
1271 {
1272         unsigned int ret, i;
1273         struct videobuf_queue *q;
1274         struct omapvideo_info *ovid;
1275         struct omap_vout_device *vout = file->private_data;
1276
1277         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1278         ovid = &vout->vid_info;
1279
1280         if (!vout)
1281                 return 0;
1282
1283         q = &vout->vbq;
1284         /* Disable all the overlay managers connected with this interface */
1285         for (i = 0; i < ovid->num_overlays; i++) {
1286                 struct omap_overlay *ovl = ovid->overlays[i];
1287                 if (ovl->manager && ovl->manager->device) {
1288                         struct omap_overlay_info info;
1289                         ovl->get_overlay_info(ovl, &info);
1290                         info.enabled = 0;
1291                         ovl->set_overlay_info(ovl, &info);
1292                 }
1293         }
1294         /* Turn off the pipeline */
1295         ret = omapvid_apply_changes(vout);
1296         if (ret)
1297                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1298                                 "Unable to apply changes\n");
1299
1300         /* Free all buffers */
1301         omap_vout_free_allbuffers(vout);
1302         videobuf_mmap_free(q);
1303
1304         /* Even if apply changes fails we should continue
1305            freeing allocated memory */
1306         if (vout->streaming) {
1307                 u32 mask = 0;
1308
1309                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
1310                         DISPC_IRQ_EVSYNC_ODD;
1311                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1312                 vout->streaming = 0;
1313
1314                 videobuf_streamoff(q);
1315                 videobuf_queue_cancel(q);
1316         }
1317
1318         if (vout->mmap_count != 0)
1319                 vout->mmap_count = 0;
1320
1321         vout->opened -= 1;
1322         file->private_data = NULL;
1323
1324         if (vout->buffer_allocated)
1325                 videobuf_mmap_free(q);
1326
1327         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1328         return ret;
1329 }
1330
1331 static int omap_vout_open(struct file *file)
1332 {
1333         struct videobuf_queue *q;
1334         struct omap_vout_device *vout = NULL;
1335
1336         vout = video_drvdata(file);
1337         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1338
1339         if (vout == NULL)
1340                 return -ENODEV;
1341
1342         /* for now, we only support single open */
1343         if (vout->opened)
1344                 return -EBUSY;
1345
1346         vout->opened += 1;
1347
1348         file->private_data = vout;
1349         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1350
1351         q = &vout->vbq;
1352         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1353         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1354         video_vbq_ops.buf_release = omap_vout_buffer_release;
1355         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1356         spin_lock_init(&vout->vbq_lock);
1357
1358         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1359                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1360                         sizeof(struct videobuf_buffer), vout, NULL);
1361
1362         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1363         return 0;
1364 }
1365
1366 /*
1367  * V4L2 ioctls
1368  */
1369 static int vidioc_querycap(struct file *file, void *fh,
1370                 struct v4l2_capability *cap)
1371 {
1372         struct omap_vout_device *vout = fh;
1373
1374         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1375         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1376         cap->bus_info[0] = '\0';
1377         cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT;
1378
1379         return 0;
1380 }
1381
1382 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1383                         struct v4l2_fmtdesc *fmt)
1384 {
1385         int index = fmt->index;
1386         enum v4l2_buf_type type = fmt->type;
1387
1388         fmt->index = index;
1389         fmt->type = type;
1390         if (index >= NUM_OUTPUT_FORMATS)
1391                 return -EINVAL;
1392
1393         fmt->flags = omap_formats[index].flags;
1394         strlcpy(fmt->description, omap_formats[index].description,
1395                         sizeof(fmt->description));
1396         fmt->pixelformat = omap_formats[index].pixelformat;
1397
1398         return 0;
1399 }
1400
1401 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1402                         struct v4l2_format *f)
1403 {
1404         struct omap_vout_device *vout = fh;
1405
1406         f->fmt.pix = vout->pix;
1407         return 0;
1408
1409 }
1410
1411 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1412                         struct v4l2_format *f)
1413 {
1414         struct omap_overlay *ovl;
1415         struct omapvideo_info *ovid;
1416         struct omap_video_timings *timing;
1417         struct omap_vout_device *vout = fh;
1418
1419         ovid = &vout->vid_info;
1420         ovl = ovid->overlays[0];
1421
1422         if (!ovl->manager || !ovl->manager->device)
1423                 return -EINVAL;
1424         /* get the display device attached to the overlay */
1425         timing = &ovl->manager->device->panel.timings;
1426
1427         vout->fbuf.fmt.height = timing->y_res;
1428         vout->fbuf.fmt.width = timing->x_res;
1429
1430         omap_vout_try_format(&f->fmt.pix);
1431         return 0;
1432 }
1433
1434 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1435                         struct v4l2_format *f)
1436 {
1437         int ret, bpp;
1438         struct omap_overlay *ovl;
1439         struct omapvideo_info *ovid;
1440         struct omap_video_timings *timing;
1441         struct omap_vout_device *vout = fh;
1442
1443         if (vout->streaming)
1444                 return -EBUSY;
1445
1446         mutex_lock(&vout->lock);
1447
1448         ovid = &vout->vid_info;
1449         ovl = ovid->overlays[0];
1450
1451         /* get the display device attached to the overlay */
1452         if (!ovl->manager || !ovl->manager->device) {
1453                 ret = -EINVAL;
1454                 goto s_fmt_vid_out_exit;
1455         }
1456         timing = &ovl->manager->device->panel.timings;
1457
1458         /* We dont support RGB24-packed mode if vrfb rotation
1459          * is enabled*/
1460         if ((rotation_enabled(vout)) &&
1461                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1462                 ret = -EINVAL;
1463                 goto s_fmt_vid_out_exit;
1464         }
1465
1466         /* get the framebuffer parameters */
1467
1468         if (rotate_90_or_270(vout)) {
1469                 vout->fbuf.fmt.height = timing->x_res;
1470                 vout->fbuf.fmt.width = timing->y_res;
1471         } else {
1472                 vout->fbuf.fmt.height = timing->y_res;
1473                 vout->fbuf.fmt.width = timing->x_res;
1474         }
1475
1476         /* change to samller size is OK */
1477
1478         bpp = omap_vout_try_format(&f->fmt.pix);
1479         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1480
1481         /* try & set the new output format */
1482         vout->bpp = bpp;
1483         vout->pix = f->fmt.pix;
1484         vout->vrfb_bpp = 1;
1485
1486         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1487         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1488                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1489                 vout->vrfb_bpp = 2;
1490
1491         /* set default crop and win */
1492         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1493
1494         /* Save the changes in the overlay strcuture */
1495         ret = omapvid_init(vout, 0);
1496         if (ret) {
1497                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1498                 goto s_fmt_vid_out_exit;
1499         }
1500
1501         ret = 0;
1502
1503 s_fmt_vid_out_exit:
1504         mutex_unlock(&vout->lock);
1505         return ret;
1506 }
1507
1508 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1509                         struct v4l2_format *f)
1510 {
1511         int ret = 0;
1512         struct omap_vout_device *vout = fh;
1513         struct v4l2_window *win = &f->fmt.win;
1514
1515         ret = omap_vout_try_window(&vout->fbuf, win);
1516
1517         if (!ret) {
1518                 if (vout->vid == OMAP_VIDEO1)
1519                         win->global_alpha = 255;
1520                 else
1521                         win->global_alpha = f->fmt.win.global_alpha;
1522         }
1523
1524         return ret;
1525 }
1526
1527 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1528                         struct v4l2_format *f)
1529 {
1530         int ret = 0;
1531         struct omap_overlay *ovl;
1532         struct omapvideo_info *ovid;
1533         struct omap_vout_device *vout = fh;
1534         struct v4l2_window *win = &f->fmt.win;
1535
1536         mutex_lock(&vout->lock);
1537         ovid = &vout->vid_info;
1538         ovl = ovid->overlays[0];
1539
1540         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1541         if (!ret) {
1542                 /* Video1 plane does not support global alpha */
1543                 if (ovl->id == OMAP_DSS_VIDEO1)
1544                         vout->win.global_alpha = 255;
1545                 else
1546                         vout->win.global_alpha = f->fmt.win.global_alpha;
1547
1548                 vout->win.chromakey = f->fmt.win.chromakey;
1549         }
1550         mutex_unlock(&vout->lock);
1551         return ret;
1552 }
1553
1554 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1555                         struct v4l2_fmtdesc *fmt)
1556 {
1557         int index = fmt->index;
1558         enum v4l2_buf_type type = fmt->type;
1559
1560         fmt->index = index;
1561         fmt->type = type;
1562         if (index >= NUM_OUTPUT_FORMATS)
1563                 return -EINVAL;
1564
1565         fmt->flags = omap_formats[index].flags;
1566         strlcpy(fmt->description, omap_formats[index].description,
1567                         sizeof(fmt->description));
1568         fmt->pixelformat = omap_formats[index].pixelformat;
1569         return 0;
1570 }
1571
1572 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1573                         struct v4l2_format *f)
1574 {
1575         u32 key_value =  0;
1576         struct omap_overlay *ovl;
1577         struct omapvideo_info *ovid;
1578         struct omap_vout_device *vout = fh;
1579         struct omap_overlay_manager_info info;
1580         struct v4l2_window *win = &f->fmt.win;
1581
1582         ovid = &vout->vid_info;
1583         ovl = ovid->overlays[0];
1584
1585         win->w = vout->win.w;
1586         win->field = vout->win.field;
1587         win->global_alpha = vout->win.global_alpha;
1588
1589         if (ovl->manager && ovl->manager->get_manager_info) {
1590                 ovl->manager->get_manager_info(ovl->manager, &info);
1591                 key_value = info.trans_key;
1592         }
1593         win->chromakey = key_value;
1594         return 0;
1595 }
1596
1597 static int vidioc_cropcap(struct file *file, void *fh,
1598                 struct v4l2_cropcap *cropcap)
1599 {
1600         struct omap_vout_device *vout = fh;
1601         struct v4l2_pix_format *pix = &vout->pix;
1602
1603         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1604                 return -EINVAL;
1605
1606         /* Width and height are always even */
1607         cropcap->bounds.width = pix->width & ~1;
1608         cropcap->bounds.height = pix->height & ~1;
1609
1610         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1611         cropcap->pixelaspect.numerator = 1;
1612         cropcap->pixelaspect.denominator = 1;
1613         return 0;
1614 }
1615
1616 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1617 {
1618         struct omap_vout_device *vout = fh;
1619
1620         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1621                 return -EINVAL;
1622         crop->c = vout->crop;
1623         return 0;
1624 }
1625
1626 static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1627 {
1628         int ret = -EINVAL;
1629         struct omap_vout_device *vout = fh;
1630         struct omapvideo_info *ovid;
1631         struct omap_overlay *ovl;
1632         struct omap_video_timings *timing;
1633
1634         if (vout->streaming)
1635                 return -EBUSY;
1636
1637         mutex_lock(&vout->lock);
1638         ovid = &vout->vid_info;
1639         ovl = ovid->overlays[0];
1640
1641         if (!ovl->manager || !ovl->manager->device) {
1642                 ret = -EINVAL;
1643                 goto s_crop_err;
1644         }
1645         /* get the display device attached to the overlay */
1646         timing = &ovl->manager->device->panel.timings;
1647
1648         if (rotate_90_or_270(vout)) {
1649                 vout->fbuf.fmt.height = timing->x_res;
1650                 vout->fbuf.fmt.width = timing->y_res;
1651         } else {
1652                 vout->fbuf.fmt.height = timing->y_res;
1653                 vout->fbuf.fmt.width = timing->x_res;
1654         }
1655
1656         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1657                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1658                                 &vout->fbuf, &crop->c);
1659
1660 s_crop_err:
1661         mutex_unlock(&vout->lock);
1662         return ret;
1663 }
1664
1665 static int vidioc_queryctrl(struct file *file, void *fh,
1666                 struct v4l2_queryctrl *ctrl)
1667 {
1668         int ret = 0;
1669
1670         switch (ctrl->id) {
1671         case V4L2_CID_ROTATE:
1672                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1673                 break;
1674         case V4L2_CID_BG_COLOR:
1675                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1676                 break;
1677         case V4L2_CID_VFLIP:
1678                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1679                 break;
1680         default:
1681                 ctrl->name[0] = '\0';
1682                 ret = -EINVAL;
1683         }
1684         return ret;
1685 }
1686
1687 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1688 {
1689         int ret = 0;
1690         struct omap_vout_device *vout = fh;
1691
1692         switch (ctrl->id) {
1693         case V4L2_CID_ROTATE:
1694                 ctrl->value = vout->control[0].value;
1695                 break;
1696         case V4L2_CID_BG_COLOR:
1697         {
1698                 struct omap_overlay_manager_info info;
1699                 struct omap_overlay *ovl;
1700
1701                 ovl = vout->vid_info.overlays[0];
1702                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1703                         ret = -EINVAL;
1704                         break;
1705                 }
1706
1707                 ovl->manager->get_manager_info(ovl->manager, &info);
1708                 ctrl->value = info.default_color;
1709                 break;
1710         }
1711         case V4L2_CID_VFLIP:
1712                 ctrl->value = vout->control[2].value;
1713                 break;
1714         default:
1715                 ret = -EINVAL;
1716         }
1717         return ret;
1718 }
1719
1720 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1721 {
1722         int ret = 0;
1723         struct omap_vout_device *vout = fh;
1724
1725         switch (a->id) {
1726         case V4L2_CID_ROTATE:
1727         {
1728                 int rotation = a->value;
1729
1730                 mutex_lock(&vout->lock);
1731
1732                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1733                         mutex_unlock(&vout->lock);
1734                         ret = -EINVAL;
1735                         break;
1736                 }
1737
1738                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1739                                                         vout->mirror)) {
1740                         mutex_unlock(&vout->lock);
1741                         ret = -EINVAL;
1742                         break;
1743                 }
1744
1745                 vout->control[0].value = rotation;
1746                 mutex_unlock(&vout->lock);
1747                 break;
1748         }
1749         case V4L2_CID_BG_COLOR:
1750         {
1751                 struct omap_overlay *ovl;
1752                 unsigned int  color = a->value;
1753                 struct omap_overlay_manager_info info;
1754
1755                 ovl = vout->vid_info.overlays[0];
1756
1757                 mutex_lock(&vout->lock);
1758                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1759                         mutex_unlock(&vout->lock);
1760                         ret = -EINVAL;
1761                         break;
1762                 }
1763
1764                 ovl->manager->get_manager_info(ovl->manager, &info);
1765                 info.default_color = color;
1766                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1767                         mutex_unlock(&vout->lock);
1768                         ret = -EINVAL;
1769                         break;
1770                 }
1771
1772                 vout->control[1].value = color;
1773                 mutex_unlock(&vout->lock);
1774                 break;
1775         }
1776         case V4L2_CID_VFLIP:
1777         {
1778                 struct omap_overlay *ovl;
1779                 struct omapvideo_info *ovid;
1780                 unsigned int  mirror = a->value;
1781
1782                 ovid = &vout->vid_info;
1783                 ovl = ovid->overlays[0];
1784
1785                 mutex_lock(&vout->lock);
1786
1787                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1788                         mutex_unlock(&vout->lock);
1789                         ret = -EINVAL;
1790                         break;
1791                 }
1792                 vout->mirror = mirror;
1793                 vout->control[2].value = mirror;
1794                 mutex_unlock(&vout->lock);
1795                 break;
1796         }
1797         default:
1798                 ret = -EINVAL;
1799         }
1800         return ret;
1801 }
1802
1803 static int vidioc_reqbufs(struct file *file, void *fh,
1804                         struct v4l2_requestbuffers *req)
1805 {
1806         int ret = 0;
1807         unsigned int i, num_buffers = 0;
1808         struct omap_vout_device *vout = fh;
1809         struct videobuf_queue *q = &vout->vbq;
1810
1811         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1812                 return -EINVAL;
1813         /* if memory is not mmp or userptr
1814            return error */
1815         if ((V4L2_MEMORY_MMAP != req->memory) &&
1816                         (V4L2_MEMORY_USERPTR != req->memory))
1817                 return -EINVAL;
1818
1819         mutex_lock(&vout->lock);
1820         /* Cannot be requested when streaming is on */
1821         if (vout->streaming) {
1822                 ret = -EBUSY;
1823                 goto reqbuf_err;
1824         }
1825
1826         /* If buffers are already allocated free them */
1827         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1828                 if (vout->mmap_count) {
1829                         ret = -EBUSY;
1830                         goto reqbuf_err;
1831                 }
1832                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1833                         video1_numbuffers : video2_numbuffers;
1834                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1835                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1836                                         vout->buffer_size);
1837                         vout->buf_virt_addr[i] = 0;
1838                         vout->buf_phy_addr[i] = 0;
1839                 }
1840                 vout->buffer_allocated = num_buffers;
1841                 videobuf_mmap_free(q);
1842         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1843                 if (vout->buffer_allocated) {
1844                         videobuf_mmap_free(q);
1845                         for (i = 0; i < vout->buffer_allocated; i++) {
1846                                 kfree(q->bufs[i]);
1847                                 q->bufs[i] = NULL;
1848                         }
1849                         vout->buffer_allocated = 0;
1850                 }
1851         }
1852
1853         /*store the memory type in data structure */
1854         vout->memory = req->memory;
1855
1856         INIT_LIST_HEAD(&vout->dma_queue);
1857
1858         /* call videobuf_reqbufs api */
1859         ret = videobuf_reqbufs(q, req);
1860         if (ret < 0)
1861                 goto reqbuf_err;
1862
1863         vout->buffer_allocated = req->count;
1864
1865 reqbuf_err:
1866         mutex_unlock(&vout->lock);
1867         return ret;
1868 }
1869
1870 static int vidioc_querybuf(struct file *file, void *fh,
1871                         struct v4l2_buffer *b)
1872 {
1873         struct omap_vout_device *vout = fh;
1874
1875         return videobuf_querybuf(&vout->vbq, b);
1876 }
1877
1878 static int vidioc_qbuf(struct file *file, void *fh,
1879                         struct v4l2_buffer *buffer)
1880 {
1881         struct omap_vout_device *vout = fh;
1882         struct videobuf_queue *q = &vout->vbq;
1883
1884         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1885                         (buffer->index >= vout->buffer_allocated) ||
1886                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1887                 return -EINVAL;
1888         }
1889         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1890                 if ((buffer->length < vout->pix.sizeimage) ||
1891                                 (0 == buffer->m.userptr)) {
1892                         return -EINVAL;
1893                 }
1894         }
1895
1896         if ((rotation_enabled(vout)) &&
1897                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1898                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1899                                 "DMA Channel not allocated for Rotation\n");
1900                 return -EINVAL;
1901         }
1902
1903         return videobuf_qbuf(q, buffer);
1904 }
1905
1906 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1907 {
1908         struct omap_vout_device *vout = fh;
1909         struct videobuf_queue *q = &vout->vbq;
1910
1911         if (!vout->streaming)
1912                 return -EINVAL;
1913
1914         if (file->f_flags & O_NONBLOCK)
1915                 /* Call videobuf_dqbuf for non blocking mode */
1916                 return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1917         else
1918                 /* Call videobuf_dqbuf for  blocking mode */
1919                 return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1920 }
1921
1922 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1923 {
1924         int ret = 0, j;
1925         u32 addr = 0, mask = 0;
1926         struct omap_vout_device *vout = fh;
1927         struct videobuf_queue *q = &vout->vbq;
1928         struct omapvideo_info *ovid = &vout->vid_info;
1929
1930         mutex_lock(&vout->lock);
1931
1932         if (vout->streaming) {
1933                 ret = -EBUSY;
1934                 goto streamon_err;
1935         }
1936
1937         ret = videobuf_streamon(q);
1938         if (ret)
1939                 goto streamon_err;
1940
1941         if (list_empty(&vout->dma_queue)) {
1942                 ret = -EIO;
1943                 goto streamon_err1;
1944         }
1945
1946         /* Get the next frame from the buffer queue */
1947         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1948                         struct videobuf_buffer, queue);
1949         /* Remove buffer from the buffer queue */
1950         list_del(&vout->cur_frm->queue);
1951         /* Mark state of the current frame to active */
1952         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1953         /* Initialize field_id and started member */
1954         vout->field_id = 0;
1955
1956         /* set flag here. Next QBUF will start DMA */
1957         vout->streaming = 1;
1958
1959         vout->first_int = 1;
1960
1961         if (omap_vout_calculate_offset(vout)) {
1962                 ret = -EINVAL;
1963                 goto streamon_err1;
1964         }
1965         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1966                 + vout->cropped_offset;
1967
1968         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
1969
1970         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1971
1972         for (j = 0; j < ovid->num_overlays; j++) {
1973                 struct omap_overlay *ovl = ovid->overlays[j];
1974
1975                 if (ovl->manager && ovl->manager->device) {
1976                         struct omap_overlay_info info;
1977                         ovl->get_overlay_info(ovl, &info);
1978                         info.enabled = 1;
1979                         info.paddr = addr;
1980                         if (ovl->set_overlay_info(ovl, &info)) {
1981                                 ret = -EINVAL;
1982                                 goto streamon_err1;
1983                         }
1984                 }
1985         }
1986
1987         /* First save the configuration in ovelray structure */
1988         ret = omapvid_init(vout, addr);
1989         if (ret)
1990                 v4l2_err(&vout->vid_dev->v4l2_dev,
1991                                 "failed to set overlay info\n");
1992         /* Enable the pipeline and set the Go bit */
1993         ret = omapvid_apply_changes(vout);
1994         if (ret)
1995                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1996
1997         ret = 0;
1998
1999 streamon_err1:
2000         if (ret)
2001                 ret = videobuf_streamoff(q);
2002 streamon_err:
2003         mutex_unlock(&vout->lock);
2004         return ret;
2005 }
2006
2007 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
2008 {
2009         u32 mask = 0;
2010         int ret = 0, j;
2011         struct omap_vout_device *vout = fh;
2012         struct omapvideo_info *ovid = &vout->vid_info;
2013
2014         if (!vout->streaming)
2015                 return -EINVAL;
2016
2017         vout->streaming = 0;
2018         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
2019
2020         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
2021
2022         for (j = 0; j < ovid->num_overlays; j++) {
2023                 struct omap_overlay *ovl = ovid->overlays[j];
2024
2025                 if (ovl->manager && ovl->manager->device) {
2026                         struct omap_overlay_info info;
2027
2028                         ovl->get_overlay_info(ovl, &info);
2029                         info.enabled = 0;
2030                         ret = ovl->set_overlay_info(ovl, &info);
2031                         if (ret)
2032                                 v4l2_err(&vout->vid_dev->v4l2_dev,
2033                                 "failed to update overlay info in streamoff\n");
2034                 }
2035         }
2036
2037         /* Turn of the pipeline */
2038         ret = omapvid_apply_changes(vout);
2039         if (ret)
2040                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
2041                                 " streamoff\n");
2042
2043         INIT_LIST_HEAD(&vout->dma_queue);
2044         ret = videobuf_streamoff(&vout->vbq);
2045
2046         return ret;
2047 }
2048
2049 static int vidioc_s_fbuf(struct file *file, void *fh,
2050                                 struct v4l2_framebuffer *a)
2051 {
2052         int enable = 0;
2053         struct omap_overlay *ovl;
2054         struct omapvideo_info *ovid;
2055         struct omap_vout_device *vout = fh;
2056         struct omap_overlay_manager_info info;
2057         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
2058
2059         ovid = &vout->vid_info;
2060         ovl = ovid->overlays[0];
2061
2062         /* OMAP DSS doesn't support Source and Destination color
2063            key together */
2064         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
2065                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
2066                 return -EINVAL;
2067         /* OMAP DSS Doesn't support the Destination color key
2068            and alpha blending together */
2069         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
2070                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
2071                 return -EINVAL;
2072
2073         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
2074                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2075                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
2076         } else
2077                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2078
2079         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
2080                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
2081                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
2082         } else
2083                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
2084
2085         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
2086                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
2087                 enable = 1;
2088         else
2089                 enable = 0;
2090         if (ovl->manager && ovl->manager->get_manager_info &&
2091                         ovl->manager->set_manager_info) {
2092
2093                 ovl->manager->get_manager_info(ovl->manager, &info);
2094                 info.trans_enabled = enable;
2095                 info.trans_key_type = key_type;
2096                 info.trans_key = vout->win.chromakey;
2097
2098                 if (ovl->manager->set_manager_info(ovl->manager, &info))
2099                         return -EINVAL;
2100         }
2101         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
2102                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
2103                 enable = 1;
2104         } else {
2105                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
2106                 enable = 0;
2107         }
2108         if (ovl->manager && ovl->manager->get_manager_info &&
2109                         ovl->manager->set_manager_info) {
2110                 ovl->manager->get_manager_info(ovl->manager, &info);
2111                 info.alpha_enabled = enable;
2112                 if (ovl->manager->set_manager_info(ovl->manager, &info))
2113                         return -EINVAL;
2114         }
2115
2116         return 0;
2117 }
2118
2119 static int vidioc_g_fbuf(struct file *file, void *fh,
2120                 struct v4l2_framebuffer *a)
2121 {
2122         struct omap_overlay *ovl;
2123         struct omapvideo_info *ovid;
2124         struct omap_vout_device *vout = fh;
2125         struct omap_overlay_manager_info info;
2126
2127         ovid = &vout->vid_info;
2128         ovl = ovid->overlays[0];
2129
2130         a->flags = 0x0;
2131         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
2132                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
2133
2134         if (ovl->manager && ovl->manager->get_manager_info) {
2135                 ovl->manager->get_manager_info(ovl->manager, &info);
2136                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
2137                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2138                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
2139                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
2140         }
2141         if (ovl->manager && ovl->manager->get_manager_info) {
2142                 ovl->manager->get_manager_info(ovl->manager, &info);
2143                 if (info.alpha_enabled)
2144                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
2145         }
2146
2147         return 0;
2148 }
2149
2150 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
2151         .vidioc_querycap                        = vidioc_querycap,
2152         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
2153         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
2154         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
2155         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
2156         .vidioc_queryctrl                       = vidioc_queryctrl,
2157         .vidioc_g_ctrl                          = vidioc_g_ctrl,
2158         .vidioc_s_fbuf                          = vidioc_s_fbuf,
2159         .vidioc_g_fbuf                          = vidioc_g_fbuf,
2160         .vidioc_s_ctrl                          = vidioc_s_ctrl,
2161         .vidioc_try_fmt_vid_overlay             = vidioc_try_fmt_vid_overlay,
2162         .vidioc_s_fmt_vid_overlay               = vidioc_s_fmt_vid_overlay,
2163         .vidioc_enum_fmt_vid_overlay            = vidioc_enum_fmt_vid_overlay,
2164         .vidioc_g_fmt_vid_overlay               = vidioc_g_fmt_vid_overlay,
2165         .vidioc_cropcap                         = vidioc_cropcap,
2166         .vidioc_g_crop                          = vidioc_g_crop,
2167         .vidioc_s_crop                          = vidioc_s_crop,
2168         .vidioc_reqbufs                         = vidioc_reqbufs,
2169         .vidioc_querybuf                        = vidioc_querybuf,
2170         .vidioc_qbuf                            = vidioc_qbuf,
2171         .vidioc_dqbuf                           = vidioc_dqbuf,
2172         .vidioc_streamon                        = vidioc_streamon,
2173         .vidioc_streamoff                       = vidioc_streamoff,
2174 };
2175
2176 static const struct v4l2_file_operations omap_vout_fops = {
2177         .owner          = THIS_MODULE,
2178         .unlocked_ioctl = video_ioctl2,
2179         .mmap           = omap_vout_mmap,
2180         .open           = omap_vout_open,
2181         .release        = omap_vout_release,
2182 };
2183
2184 /* Init functions used during driver initialization */
2185 /* Initial setup of video_data */
2186 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
2187 {
2188         struct video_device *vfd;
2189         struct v4l2_pix_format *pix;
2190         struct v4l2_control *control;
2191         struct omap_dss_device *display =
2192                 vout->vid_info.overlays[0]->manager->device;
2193
2194         /* set the default pix */
2195         pix = &vout->pix;
2196
2197         /* Set the default picture of QVGA  */
2198         pix->width = QQVGA_WIDTH;
2199         pix->height = QQVGA_HEIGHT;
2200
2201         /* Default pixel format is RGB 5-6-5 */
2202         pix->pixelformat = V4L2_PIX_FMT_RGB565;
2203         pix->field = V4L2_FIELD_ANY;
2204         pix->bytesperline = pix->width * 2;
2205         pix->sizeimage = pix->bytesperline * pix->height;
2206         pix->priv = 0;
2207         pix->colorspace = V4L2_COLORSPACE_JPEG;
2208
2209         vout->bpp = RGB565_BPP;
2210         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
2211         vout->fbuf.fmt.height =  display->panel.timings.y_res;
2212
2213         /* Set the data structures for the overlay parameters*/
2214         vout->win.global_alpha = 255;
2215         vout->fbuf.flags = 0;
2216         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
2217                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
2218         vout->win.chromakey = 0;
2219
2220         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
2221
2222         /*Initialize the control variables for
2223           rotation, flipping and background color. */
2224         control = vout->control;
2225         control[0].id = V4L2_CID_ROTATE;
2226         control[0].value = 0;
2227         vout->rotation = 0;
2228         vout->mirror = 0;
2229         vout->control[2].id = V4L2_CID_HFLIP;
2230         vout->control[2].value = 0;
2231         vout->vrfb_bpp = 2;
2232
2233         control[1].id = V4L2_CID_BG_COLOR;
2234         control[1].value = 0;
2235
2236         /* initialize the video_device struct */
2237         vfd = vout->vfd = video_device_alloc();
2238
2239         if (!vfd) {
2240                 printk(KERN_ERR VOUT_NAME ": could not allocate"
2241                                 " video device struct\n");
2242                 return -ENOMEM;
2243         }
2244         vfd->release = video_device_release;
2245         vfd->ioctl_ops = &vout_ioctl_ops;
2246
2247         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
2248
2249         vfd->fops = &omap_vout_fops;
2250         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
2251         mutex_init(&vout->lock);
2252
2253         vfd->minor = -1;
2254         return 0;
2255
2256 }
2257
2258 /* Setup video buffers */
2259 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
2260                 int vid_num)
2261 {
2262         u32 numbuffers;
2263         int ret = 0, i, j;
2264         int image_width, image_height;
2265         struct video_device *vfd;
2266         struct omap_vout_device *vout;
2267         int static_vrfb_allocation = 0, vrfb_num_bufs = VRFB_NUM_BUFS;
2268         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2269         struct omap2video_device *vid_dev =
2270                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
2271
2272         vout = vid_dev->vouts[vid_num];
2273         vfd = vout->vfd;
2274
2275         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
2276         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
2277         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
2278
2279         for (i = 0; i < numbuffers; i++) {
2280                 vout->buf_virt_addr[i] =
2281                         omap_vout_alloc_buffer(vout->buffer_size,
2282                                         (u32 *) &vout->buf_phy_addr[i]);
2283                 if (!vout->buf_virt_addr[i]) {
2284                         numbuffers = i;
2285                         ret = -ENOMEM;
2286                         goto free_buffers;
2287                 }
2288         }
2289
2290         for (i = 0; i < VRFB_NUM_BUFS; i++) {
2291                 if (omap_vrfb_request_ctx(&vout->vrfb_context[i])) {
2292                         dev_info(&pdev->dev, ": VRFB allocation failed\n");
2293                         for (j = 0; j < i; j++)
2294                                 omap_vrfb_release_ctx(&vout->vrfb_context[j]);
2295                         ret = -ENOMEM;
2296                         goto free_buffers;
2297                 }
2298         }
2299         vout->cropped_offset = 0;
2300
2301         /* Calculate VRFB memory size */
2302         /* allocate for worst case size */
2303         image_width = VID_MAX_WIDTH / TILE_SIZE;
2304         if (VID_MAX_WIDTH % TILE_SIZE)
2305                 image_width++;
2306
2307         image_width = image_width * TILE_SIZE;
2308         image_height = VID_MAX_HEIGHT / TILE_SIZE;
2309
2310         if (VID_MAX_HEIGHT % TILE_SIZE)
2311                 image_height++;
2312
2313         image_height = image_height * TILE_SIZE;
2314         vout->smsshado_size = PAGE_ALIGN(image_width * image_height * 2 * 2);
2315
2316         /*
2317          * Request and Initialize DMA, for DMA based VRFB transfer
2318          */
2319         vout->vrfb_dma_tx.dev_id = OMAP_DMA_NO_DEVICE;
2320         vout->vrfb_dma_tx.dma_ch = -1;
2321         vout->vrfb_dma_tx.req_status = DMA_CHAN_ALLOTED;
2322         ret = omap_request_dma(vout->vrfb_dma_tx.dev_id, "VRFB DMA TX",
2323                         omap_vout_vrfb_dma_tx_callback,
2324                         (void *) &vout->vrfb_dma_tx, &vout->vrfb_dma_tx.dma_ch);
2325         if (ret < 0) {
2326                 vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
2327                 dev_info(&pdev->dev, ": failed to allocate DMA Channel for"
2328                                 " video%d\n", vfd->minor);
2329         }
2330         init_waitqueue_head(&vout->vrfb_dma_tx.wait);
2331
2332         /* Allocate VRFB buffers if selected through bootargs */
2333         static_vrfb_allocation = (vid_num == 0) ?
2334                 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
2335
2336         /* statically allocated the VRFB buffer is done through
2337            commands line aruments */
2338         if (static_vrfb_allocation) {
2339                 if (omap_vout_allocate_vrfb_buffers(vout, &vrfb_num_bufs, -1)) {
2340                         ret =  -ENOMEM;
2341                         goto release_vrfb_ctx;
2342                 }
2343                 vout->vrfb_static_allocation = 1;
2344         }
2345         return 0;
2346
2347 release_vrfb_ctx:
2348         for (j = 0; j < VRFB_NUM_BUFS; j++)
2349                 omap_vrfb_release_ctx(&vout->vrfb_context[j]);
2350
2351 free_buffers:
2352         for (i = 0; i < numbuffers; i++) {
2353                 omap_vout_free_buffer(vout->buf_virt_addr[i],
2354                                                 vout->buffer_size);
2355                 vout->buf_virt_addr[i] = 0;
2356                 vout->buf_phy_addr[i] = 0;
2357         }
2358         return ret;
2359
2360 }
2361
2362 /* Create video out devices */
2363 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2364 {
2365         int ret = 0, k;
2366         struct omap_vout_device *vout;
2367         struct video_device *vfd = NULL;
2368         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2369         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2370                         struct omap2video_device, v4l2_dev);
2371
2372         for (k = 0; k < pdev->num_resources; k++) {
2373
2374                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2375                 if (!vout) {
2376                         dev_err(&pdev->dev, ": could not allocate memory\n");
2377                         return -ENOMEM;
2378                 }
2379
2380                 vout->vid = k;
2381                 vid_dev->vouts[k] = vout;
2382                 vout->vid_dev = vid_dev;
2383                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2384                 if (pdev->num_resources == 1)
2385                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2386                 else
2387                         /* Else select video1 and video2 one by one. */
2388                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2389                 vout->vid_info.num_overlays = 1;
2390                 vout->vid_info.id = k + 1;
2391
2392                 /* Setup the default configuration for the video devices
2393                  */
2394                 if (omap_vout_setup_video_data(vout) != 0) {
2395                         ret = -ENOMEM;
2396                         goto error;
2397                 }
2398
2399                 /* Allocate default number of buffers for the video streaming
2400                  * and reserve the VRFB space for rotation
2401                  */
2402                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2403                         ret = -ENOMEM;
2404                         goto error1;
2405                 }
2406
2407                 /* Register the Video device with V4L2
2408                  */
2409                 vfd = vout->vfd;
2410                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2411                         dev_err(&pdev->dev, ": Could not register "
2412                                         "Video for Linux device\n");
2413                         vfd->minor = -1;
2414                         ret = -ENODEV;
2415                         goto error2;
2416                 }
2417                 video_set_drvdata(vfd, vout);
2418
2419                 /* Configure the overlay structure */
2420                 ret = omapvid_init(vid_dev->vouts[k], 0);
2421                 if (!ret)
2422                         goto success;
2423
2424 error2:
2425                 omap_vout_release_vrfb(vout);
2426                 omap_vout_free_buffers(vout);
2427 error1:
2428                 video_device_release(vfd);
2429 error:
2430                 kfree(vout);
2431                 return ret;
2432
2433 success:
2434                 dev_info(&pdev->dev, ": registered and initialized"
2435                                 " video device %d\n", vfd->minor);
2436                 if (k == (pdev->num_resources - 1))
2437                         return 0;
2438         }
2439
2440         return -ENODEV;
2441 }
2442 /* Driver functions */
2443 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2444 {
2445         struct video_device *vfd;
2446
2447         if (!vout)
2448                 return;
2449
2450         vfd = vout->vfd;
2451         if (vfd) {
2452                 if (!video_is_registered(vfd)) {
2453                         /*
2454                          * The device was never registered, so release the
2455                          * video_device struct directly.
2456                          */
2457                         video_device_release(vfd);
2458                 } else {
2459                         /*
2460                          * The unregister function will release the video_device
2461                          * struct as well as unregistering it.
2462                          */
2463                         video_unregister_device(vfd);
2464                 }
2465         }
2466
2467         omap_vout_release_vrfb(vout);
2468         omap_vout_free_buffers(vout);
2469         /* Free the VRFB buffer if allocated
2470          * init time
2471          */
2472         if (vout->vrfb_static_allocation)
2473                 omap_vout_free_vrfb_buffers(vout);
2474
2475         kfree(vout);
2476 }
2477
2478 static int omap_vout_remove(struct platform_device *pdev)
2479 {
2480         int k;
2481         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2482         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2483                         omap2video_device, v4l2_dev);
2484
2485         v4l2_device_unregister(v4l2_dev);
2486         for (k = 0; k < pdev->num_resources; k++)
2487                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2488
2489         for (k = 0; k < vid_dev->num_displays; k++) {
2490                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2491                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2492
2493                 omap_dss_put_device(vid_dev->displays[k]);
2494         }
2495         kfree(vid_dev);
2496         return 0;
2497 }
2498
2499 static int __init omap_vout_probe(struct platform_device *pdev)
2500 {
2501         int ret = 0, i;
2502         struct omap_overlay *ovl;
2503         struct omap_dss_device *dssdev = NULL;
2504         struct omap_dss_device *def_display;
2505         struct omap2video_device *vid_dev = NULL;
2506
2507         if (pdev->num_resources == 0) {
2508                 dev_err(&pdev->dev, "probed for an unknown device\n");
2509                 return -ENODEV;
2510         }
2511
2512         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2513         if (vid_dev == NULL)
2514                 return -ENOMEM;
2515
2516         vid_dev->num_displays = 0;
2517         for_each_dss_dev(dssdev) {
2518                 omap_dss_get_device(dssdev);
2519                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2520         }
2521
2522         if (vid_dev->num_displays == 0) {
2523                 dev_err(&pdev->dev, "no displays\n");
2524                 ret = -EINVAL;
2525                 goto probe_err0;
2526         }
2527
2528         vid_dev->num_overlays = omap_dss_get_num_overlays();
2529         for (i = 0; i < vid_dev->num_overlays; i++)
2530                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2531
2532         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2533         for (i = 0; i < vid_dev->num_managers; i++)
2534                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2535
2536         /* Get the Video1 overlay and video2 overlay.
2537          * Setup the Display attached to that overlays
2538          */
2539         for (i = 1; i < vid_dev->num_overlays; i++) {
2540                 ovl = omap_dss_get_overlay(i);
2541                 if (ovl->manager && ovl->manager->device) {
2542                         def_display = ovl->manager->device;
2543                 } else {
2544                         dev_warn(&pdev->dev, "cannot find display\n");
2545                         def_display = NULL;
2546                 }
2547                 if (def_display) {
2548                         struct omap_dss_driver *dssdrv = def_display->driver;
2549
2550                         ret = dssdrv->enable(def_display);
2551                         if (ret) {
2552                                 /* Here we are not considering a error
2553                                  *  as display may be enabled by frame
2554                                  *  buffer driver
2555                                  */
2556                                 dev_warn(&pdev->dev,
2557                                         "'%s' Display already enabled\n",
2558                                         def_display->name);
2559                         }
2560                         /* set the update mode */
2561                         if (def_display->caps &
2562                                         OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2563                                 if (dssdrv->enable_te)
2564                                         dssdrv->enable_te(def_display, 0);
2565                                 if (dssdrv->set_update_mode)
2566                                         dssdrv->set_update_mode(def_display,
2567                                                         OMAP_DSS_UPDATE_MANUAL);
2568                         } else {
2569                                 if (dssdrv->set_update_mode)
2570                                         dssdrv->set_update_mode(def_display,
2571                                                         OMAP_DSS_UPDATE_AUTO);
2572                         }
2573                 }
2574         }
2575
2576         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2577                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2578                 ret = -ENODEV;
2579                 goto probe_err1;
2580         }
2581
2582         ret = omap_vout_create_video_devices(pdev);
2583         if (ret)
2584                 goto probe_err2;
2585
2586         for (i = 0; i < vid_dev->num_displays; i++) {
2587                 struct omap_dss_device *display = vid_dev->displays[i];
2588
2589                 if (display->driver->update)
2590                         display->driver->update(display, 0, 0,
2591                                         display->panel.timings.x_res,
2592                                         display->panel.timings.y_res);
2593         }
2594         return 0;
2595
2596 probe_err2:
2597         v4l2_device_unregister(&vid_dev->v4l2_dev);
2598 probe_err1:
2599         for (i = 1; i < vid_dev->num_overlays; i++) {
2600                 def_display = NULL;
2601                 ovl = omap_dss_get_overlay(i);
2602                 if (ovl->manager && ovl->manager->device)
2603                         def_display = ovl->manager->device;
2604
2605                 if (def_display && def_display->driver)
2606                         def_display->driver->disable(def_display);
2607         }
2608 probe_err0:
2609         kfree(vid_dev);
2610         return ret;
2611 }
2612
2613 static struct platform_driver omap_vout_driver = {
2614         .driver = {
2615                 .name = VOUT_NAME,
2616         },
2617         .probe = omap_vout_probe,
2618         .remove = omap_vout_remove,
2619 };
2620
2621 static int __init omap_vout_init(void)
2622 {
2623         if (platform_driver_register(&omap_vout_driver) != 0) {
2624                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2625                 return -EINVAL;
2626         }
2627         return 0;
2628 }
2629
2630 static void omap_vout_cleanup(void)
2631 {
2632         platform_driver_unregister(&omap_vout_driver);
2633 }
2634
2635 late_initcall(omap_vout_init);
2636 module_exit(omap_vout_cleanup);