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         for (i = startindex; i < *count; i++) {
 986                 vout->buffer_size = *size;
 987
 988                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
 989                                 &phy_addr);
 990                 if (!virt_addr) {
 991                         if (!rotation_enabled(vout))
 992                                 break;
 993                         /* Free the VRFB buffers if no space for V4L2 buffers */
 994                         for (j = i; j < *count; j++) {
 995                                 omap_vout_free_buffer(
 996                                                 vout->smsshado_virt_addr[j],
 997                                                 vout->smsshado_size);
 998                                 vout->smsshado_virt_addr[j] = 0;
 999                                 vout->smsshado_phy_addr[j] = 0;
1000                         }
1001                 }
1002                 vout->buf_virt_addr[i] = virt_addr;
1003                 vout->buf_phy_addr[i] = phy_addr;
1004         }
1005         *count = vout->buffer_allocated = i;
1006
1007         return 0;
1008 }
1009
1010 /*
1011  * Free the V4L2 buffers additionally allocated than default
1012  * number of buffers and free all the VRFB buffers
1013  */
1014 static void omap_vout_free_allbuffers(struct omap_vout_device *vout)
1015 {
1016         int num_buffers = 0, i;
1017
1018         num_buffers = (vout->vid == OMAP_VIDEO1) ?
1019                 video1_numbuffers : video2_numbuffers;
1020
1021         for (i = num_buffers; i < vout->buffer_allocated; i++) {
1022                 if (vout->buf_virt_addr[i])
1023                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1024                                         vout->buffer_size);
1025
1026                 vout->buf_virt_addr[i] = 0;
1027                 vout->buf_phy_addr[i] = 0;
1028         }
1029         /* Free the VRFB buffers only if they are allocated
1030          * during reqbufs.  Don't free if init time allocated
1031          */
1032         if (!vout->vrfb_static_allocation) {
1033                 for (i = 0; i < VRFB_NUM_BUFS; i++) {
1034                         if (vout->smsshado_virt_addr[i]) {
1035                                 omap_vout_free_buffer(
1036                                                 vout->smsshado_virt_addr[i],
1037                                                 vout->smsshado_size);
1038                                 vout->smsshado_virt_addr[i] = 0;
1039                                 vout->smsshado_phy_addr[i] = 0;
1040                         }
1041                 }
1042         }
1043         vout->buffer_allocated = num_buffers;
1044 }
1045
1046 /*
1047  * This function will be called when VIDIOC_QBUF ioctl is called.
1048  * It prepare buffers before give out for the display. This function
1049  * converts user space virtual address into physical address if userptr memory
1050  * exchange mechanism is used. If rotation is enabled, it copies entire
1051  * buffer into VRFB memory space before giving it to the DSS.
1052  */
1053 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
1054                             struct videobuf_buffer *vb,
1055                             enum v4l2_field field)
1056 {
1057         dma_addr_t dmabuf;
1058         struct vid_vrfb_dma *tx;
1059         enum dss_rotation rotation;
1060         struct omap_vout_device *vout = q->priv_data;
1061         u32 dest_frame_index = 0, src_element_index = 0;
1062         u32 dest_element_index = 0, src_frame_index = 0;
1063         u32 elem_count = 0, frame_count = 0, pixsize = 2;
1064
1065         if (VIDEOBUF_NEEDS_INIT == vb->state) {
1066                 vb->width = vout->pix.width;
1067                 vb->height = vout->pix.height;
1068                 vb->size = vb->width * vb->height * vout->bpp;
1069                 vb->field = field;
1070         }
1071         vb->state = VIDEOBUF_PREPARED;
1072         /* if user pointer memory mechanism is used, get the physical
1073          * address of the buffer
1074          */
1075         if (V4L2_MEMORY_USERPTR == vb->memory) {
1076                 if (0 == vb->baddr)
1077                         return -EINVAL;
1078                 /* Physical address */
1079                 vout->queued_buf_addr[vb->i] = (u8 *)
1080                         omap_vout_uservirt_to_phys(vb->baddr);
1081         } else {
1082                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
1083         }
1084
1085         if (!rotation_enabled(vout))
1086                 return 0;
1087
1088         dmabuf = vout->buf_phy_addr[vb->i];
1089         /* If rotation is enabled, copy input buffer into VRFB
1090          * memory space using DMA. We are copying input buffer
1091          * into VRFB memory space of desired angle and DSS will
1092          * read image VRFB memory for 0 degree angle
1093          */
1094         pixsize = vout->bpp * vout->vrfb_bpp;
1095         /*
1096          * DMA transfer in double index mode
1097          */
1098
1099         /* Frame index */
1100         dest_frame_index = ((MAX_PIXELS_PER_LINE * pixsize) -
1101                         (vout->pix.width * vout->bpp)) + 1;
1102
1103         /* Source and destination parameters */
1104         src_element_index = 0;
1105         src_frame_index = 0;
1106         dest_element_index = 1;
1107         /* Number of elements per frame */
1108         elem_count = vout->pix.width * vout->bpp;
1109         frame_count = vout->pix.height;
1110         tx = &vout->vrfb_dma_tx;
1111         tx->tx_status = 0;
1112         omap_set_dma_transfer_params(tx->dma_ch, OMAP_DMA_DATA_TYPE_S32,
1113                         (elem_count / 4), frame_count, OMAP_DMA_SYNC_ELEMENT,
1114                         tx->dev_id, 0x0);
1115         /* src_port required only for OMAP1 */
1116         omap_set_dma_src_params(tx->dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
1117                         dmabuf, src_element_index, src_frame_index);
1118         /*set dma source burst mode for VRFB */
1119         omap_set_dma_src_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
1120         rotation = calc_rotation(vout);
1121
1122         /* dest_port required only for OMAP1 */
1123         omap_set_dma_dest_params(tx->dma_ch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
1124                         vout->vrfb_context[vb->i].paddr[0], dest_element_index,
1125                         dest_frame_index);
1126         /*set dma dest burst mode for VRFB */
1127         omap_set_dma_dest_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
1128         omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE, 0x20, 0);
1129
1130         omap_start_dma(tx->dma_ch);
1131         interruptible_sleep_on_timeout(&tx->wait, VRFB_TX_TIMEOUT);
1132
1133         if (tx->tx_status == 0) {
1134                 omap_stop_dma(tx->dma_ch);
1135                 return -EINVAL;
1136         }
1137         /* Store buffers physical address into an array. Addresses
1138          * from this array will be used to configure DSS */
1139         vout->queued_buf_addr[vb->i] = (u8 *)
1140                 vout->vrfb_context[vb->i].paddr[rotation];
1141         return 0;
1142 }
1143
1144 /*
1145  * Buffer queue function will be called from the videobuf layer when _QBUF
1146  * ioctl is called. It is used to enqueue buffer, which is ready to be
1147  * displayed.
1148  */
1149 static void omap_vout_buffer_queue(struct videobuf_queue *q,
1150                           struct videobuf_buffer *vb)
1151 {
1152         struct omap_vout_device *vout = q->priv_data;
1153
1154         /* Driver is also maintainig a queue. So enqueue buffer in the driver
1155          * queue */
1156         list_add_tail(&vb->queue, &vout->dma_queue);
1157
1158         vb->state = VIDEOBUF_QUEUED;
1159 }
1160
1161 /*
1162  * Buffer release function is called from videobuf layer to release buffer
1163  * which are already allocated
1164  */
1165 static void omap_vout_buffer_release(struct videobuf_queue *q,
1166                             struct videobuf_buffer *vb)
1167 {
1168         struct omap_vout_device *vout = q->priv_data;
1169
1170         vb->state = VIDEOBUF_NEEDS_INIT;
1171
1172         if (V4L2_MEMORY_MMAP != vout->memory)
1173                 return;
1174 }
1175
1176 /*
1177  *  File operations
1178  */
1179 static void omap_vout_vm_open(struct vm_area_struct *vma)
1180 {
1181         struct omap_vout_device *vout = vma->vm_private_data;
1182
1183         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1184                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
1185         vout->mmap_count++;
1186 }
1187
1188 static void omap_vout_vm_close(struct vm_area_struct *vma)
1189 {
1190         struct omap_vout_device *vout = vma->vm_private_data;
1191
1192         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1193                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
1194         vout->mmap_count--;
1195 }
1196
1197 static struct vm_operations_struct omap_vout_vm_ops = {
1198         .open   = omap_vout_vm_open,
1199         .close  = omap_vout_vm_close,
1200 };
1201
1202 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
1203 {
1204         int i;
1205         void *pos;
1206         unsigned long start = vma->vm_start;
1207         unsigned long size = (vma->vm_end - vma->vm_start);
1208         struct omap_vout_device *vout = file->private_data;
1209         struct videobuf_queue *q = &vout->vbq;
1210
1211         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1212                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
1213                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
1214
1215         /* look for the buffer to map */
1216         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
1217                 if (NULL == q->bufs[i])
1218                         continue;
1219                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
1220                         continue;
1221                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
1222                         break;
1223         }
1224
1225         if (VIDEO_MAX_FRAME == i) {
1226                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
1227                                 "offset invalid [offset=0x%lx]\n",
1228                                 (vma->vm_pgoff << PAGE_SHIFT));
1229                 return -EINVAL;
1230         }
1231         q->bufs[i]->baddr = vma->vm_start;
1232
1233         vma->vm_flags |= VM_RESERVED;
1234         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1235         vma->vm_ops = &omap_vout_vm_ops;
1236         vma->vm_private_data = (void *) vout;
1237         pos = (void *)vout->buf_virt_addr[i];
1238         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
1239         while (size > 0) {
1240                 unsigned long pfn;
1241                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
1242                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
1243                         return -EAGAIN;
1244                 start += PAGE_SIZE;
1245                 pos += PAGE_SIZE;
1246                 size -= PAGE_SIZE;
1247         }
1248         vout->mmap_count++;
1249         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1250
1251         return 0;
1252 }
1253
1254 static int omap_vout_release(struct file *file)
1255 {
1256         unsigned int ret, i;
1257         struct videobuf_queue *q;
1258         struct omapvideo_info *ovid;
1259         struct omap_vout_device *vout = file->private_data;
1260
1261         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1262         ovid = &vout->vid_info;
1263
1264         if (!vout)
1265                 return 0;
1266
1267         q = &vout->vbq;
1268         /* Disable all the overlay managers connected with this interface */
1269         for (i = 0; i < ovid->num_overlays; i++) {
1270                 struct omap_overlay *ovl = ovid->overlays[i];
1271                 if (ovl->manager && ovl->manager->device) {
1272                         struct omap_overlay_info info;
1273                         ovl->get_overlay_info(ovl, &info);
1274                         info.enabled = 0;
1275                         ovl->set_overlay_info(ovl, &info);
1276                 }
1277         }
1278         /* Turn off the pipeline */
1279         ret = omapvid_apply_changes(vout);
1280         if (ret)
1281                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1282                                 "Unable to apply changes\n");
1283
1284         /* Free all buffers */
1285         omap_vout_free_allbuffers(vout);
1286         videobuf_mmap_free(q);
1287
1288         /* Even if apply changes fails we should continue
1289            freeing allocated memory */
1290         if (vout->streaming) {
1291                 u32 mask = 0;
1292
1293                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
1294                         DISPC_IRQ_EVSYNC_ODD;
1295                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1296                 vout->streaming = 0;
1297
1298                 videobuf_streamoff(q);
1299                 videobuf_queue_cancel(q);
1300         }
1301
1302         if (vout->mmap_count != 0)
1303                 vout->mmap_count = 0;
1304
1305         vout->opened -= 1;
1306         file->private_data = NULL;
1307
1308         if (vout->buffer_allocated)
1309                 videobuf_mmap_free(q);
1310
1311         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1312         return ret;
1313 }
1314
1315 static int omap_vout_open(struct file *file)
1316 {
1317         struct videobuf_queue *q;
1318         struct omap_vout_device *vout = NULL;
1319
1320         vout = video_drvdata(file);
1321         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1322
1323         if (vout == NULL)
1324                 return -ENODEV;
1325
1326         /* for now, we only support single open */
1327         if (vout->opened)
1328                 return -EBUSY;
1329
1330         vout->opened += 1;
1331
1332         file->private_data = vout;
1333         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1334
1335         q = &vout->vbq;
1336         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1337         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1338         video_vbq_ops.buf_release = omap_vout_buffer_release;
1339         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1340         spin_lock_init(&vout->vbq_lock);
1341
1342         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1343                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1344                         sizeof(struct videobuf_buffer), vout, NULL);
1345
1346         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1347         return 0;
1348 }
1349
1350 /*
1351  * V4L2 ioctls
1352  */
1353 static int vidioc_querycap(struct file *file, void *fh,
1354                 struct v4l2_capability *cap)
1355 {
1356         struct omap_vout_device *vout = fh;
1357
1358         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1359         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1360         cap->bus_info[0] = '\0';
1361         cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT;
1362
1363         return 0;
1364 }
1365
1366 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1367                         struct v4l2_fmtdesc *fmt)
1368 {
1369         int index = fmt->index;
1370         enum v4l2_buf_type type = fmt->type;
1371
1372         fmt->index = index;
1373         fmt->type = type;
1374         if (index >= NUM_OUTPUT_FORMATS)
1375                 return -EINVAL;
1376
1377         fmt->flags = omap_formats[index].flags;
1378         strlcpy(fmt->description, omap_formats[index].description,
1379                         sizeof(fmt->description));
1380         fmt->pixelformat = omap_formats[index].pixelformat;
1381
1382         return 0;
1383 }
1384
1385 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1386                         struct v4l2_format *f)
1387 {
1388         struct omap_vout_device *vout = fh;
1389
1390         f->fmt.pix = vout->pix;
1391         return 0;
1392
1393 }
1394
1395 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1396                         struct v4l2_format *f)
1397 {
1398         struct omap_overlay *ovl;
1399         struct omapvideo_info *ovid;
1400         struct omap_video_timings *timing;
1401         struct omap_vout_device *vout = fh;
1402
1403         ovid = &vout->vid_info;
1404         ovl = ovid->overlays[0];
1405
1406         if (!ovl->manager || !ovl->manager->device)
1407                 return -EINVAL;
1408         /* get the display device attached to the overlay */
1409         timing = &ovl->manager->device->panel.timings;
1410
1411         vout->fbuf.fmt.height = timing->y_res;
1412         vout->fbuf.fmt.width = timing->x_res;
1413
1414         omap_vout_try_format(&f->fmt.pix);
1415         return 0;
1416 }
1417
1418 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1419                         struct v4l2_format *f)
1420 {
1421         int ret, bpp;
1422         struct omap_overlay *ovl;
1423         struct omapvideo_info *ovid;
1424         struct omap_video_timings *timing;
1425         struct omap_vout_device *vout = fh;
1426
1427         if (vout->streaming)
1428                 return -EBUSY;
1429
1430         mutex_lock(&vout->lock);
1431
1432         ovid = &vout->vid_info;
1433         ovl = ovid->overlays[0];
1434
1435         /* get the display device attached to the overlay */
1436         if (!ovl->manager || !ovl->manager->device) {
1437                 ret = -EINVAL;
1438                 goto s_fmt_vid_out_exit;
1439         }
1440         timing = &ovl->manager->device->panel.timings;
1441
1442         /* We dont support RGB24-packed mode if vrfb rotation
1443          * is enabled*/
1444         if ((rotation_enabled(vout)) &&
1445                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1446                 ret = -EINVAL;
1447                 goto s_fmt_vid_out_exit;
1448         }
1449
1450         /* get the framebuffer parameters */
1451
1452         if (rotate_90_or_270(vout)) {
1453                 vout->fbuf.fmt.height = timing->x_res;
1454                 vout->fbuf.fmt.width = timing->y_res;
1455         } else {
1456                 vout->fbuf.fmt.height = timing->y_res;
1457                 vout->fbuf.fmt.width = timing->x_res;
1458         }
1459
1460         /* change to samller size is OK */
1461
1462         bpp = omap_vout_try_format(&f->fmt.pix);
1463         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1464
1465         /* try & set the new output format */
1466         vout->bpp = bpp;
1467         vout->pix = f->fmt.pix;
1468         vout->vrfb_bpp = 1;
1469
1470         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1471         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1472                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1473                 vout->vrfb_bpp = 2;
1474
1475         /* set default crop and win */
1476         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1477
1478         /* Save the changes in the overlay strcuture */
1479         ret = omapvid_init(vout, 0);
1480         if (ret) {
1481                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1482                 goto s_fmt_vid_out_exit;
1483         }
1484
1485         ret = 0;
1486
1487 s_fmt_vid_out_exit:
1488         mutex_unlock(&vout->lock);
1489         return ret;
1490 }
1491
1492 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1493                         struct v4l2_format *f)
1494 {
1495         int ret = 0;
1496         struct omap_vout_device *vout = fh;
1497         struct v4l2_window *win = &f->fmt.win;
1498
1499         ret = omap_vout_try_window(&vout->fbuf, win);
1500
1501         if (!ret) {
1502                 if (vout->vid == OMAP_VIDEO1)
1503                         win->global_alpha = 255;
1504                 else
1505                         win->global_alpha = f->fmt.win.global_alpha;
1506         }
1507
1508         return ret;
1509 }
1510
1511 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1512                         struct v4l2_format *f)
1513 {
1514         int ret = 0;
1515         struct omap_overlay *ovl;
1516         struct omapvideo_info *ovid;
1517         struct omap_vout_device *vout = fh;
1518         struct v4l2_window *win = &f->fmt.win;
1519
1520         mutex_lock(&vout->lock);
1521         ovid = &vout->vid_info;
1522         ovl = ovid->overlays[0];
1523
1524         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1525         if (!ret) {
1526                 /* Video1 plane does not support global alpha */
1527                 if (ovl->id == OMAP_DSS_VIDEO1)
1528                         vout->win.global_alpha = 255;
1529                 else
1530                         vout->win.global_alpha = f->fmt.win.global_alpha;
1531
1532                 vout->win.chromakey = f->fmt.win.chromakey;
1533         }
1534         mutex_unlock(&vout->lock);
1535         return ret;
1536 }
1537
1538 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1539                         struct v4l2_fmtdesc *fmt)
1540 {
1541         int index = fmt->index;
1542         enum v4l2_buf_type type = fmt->type;
1543
1544         fmt->index = index;
1545         fmt->type = type;
1546         if (index >= NUM_OUTPUT_FORMATS)
1547                 return -EINVAL;
1548
1549         fmt->flags = omap_formats[index].flags;
1550         strlcpy(fmt->description, omap_formats[index].description,
1551                         sizeof(fmt->description));
1552         fmt->pixelformat = omap_formats[index].pixelformat;
1553         return 0;
1554 }
1555
1556 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1557                         struct v4l2_format *f)
1558 {
1559         u32 key_value =  0;
1560         struct omap_overlay *ovl;
1561         struct omapvideo_info *ovid;
1562         struct omap_vout_device *vout = fh;
1563         struct omap_overlay_manager_info info;
1564         struct v4l2_window *win = &f->fmt.win;
1565
1566         ovid = &vout->vid_info;
1567         ovl = ovid->overlays[0];
1568
1569         win->w = vout->win.w;
1570         win->field = vout->win.field;
1571         win->global_alpha = vout->win.global_alpha;
1572
1573         if (ovl->manager && ovl->manager->get_manager_info) {
1574                 ovl->manager->get_manager_info(ovl->manager, &info);
1575                 key_value = info.trans_key;
1576         }
1577         win->chromakey = key_value;
1578         return 0;
1579 }
1580
1581 static int vidioc_cropcap(struct file *file, void *fh,
1582                 struct v4l2_cropcap *cropcap)
1583 {
1584         struct omap_vout_device *vout = fh;
1585         struct v4l2_pix_format *pix = &vout->pix;
1586
1587         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1588                 return -EINVAL;
1589
1590         /* Width and height are always even */
1591         cropcap->bounds.width = pix->width & ~1;
1592         cropcap->bounds.height = pix->height & ~1;
1593
1594         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1595         cropcap->pixelaspect.numerator = 1;
1596         cropcap->pixelaspect.denominator = 1;
1597         return 0;
1598 }
1599
1600 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1601 {
1602         struct omap_vout_device *vout = fh;
1603
1604         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1605                 return -EINVAL;
1606         crop->c = vout->crop;
1607         return 0;
1608 }
1609
1610 static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1611 {
1612         int ret = -EINVAL;
1613         struct omap_vout_device *vout = fh;
1614         struct omapvideo_info *ovid;
1615         struct omap_overlay *ovl;
1616         struct omap_video_timings *timing;
1617
1618         if (vout->streaming)
1619                 return -EBUSY;
1620
1621         mutex_lock(&vout->lock);
1622         ovid = &vout->vid_info;
1623         ovl = ovid->overlays[0];
1624
1625         if (!ovl->manager || !ovl->manager->device) {
1626                 ret = -EINVAL;
1627                 goto s_crop_err;
1628         }
1629         /* get the display device attached to the overlay */
1630         timing = &ovl->manager->device->panel.timings;
1631
1632         if (rotate_90_or_270(vout)) {
1633                 vout->fbuf.fmt.height = timing->x_res;
1634                 vout->fbuf.fmt.width = timing->y_res;
1635         } else {
1636                 vout->fbuf.fmt.height = timing->y_res;
1637                 vout->fbuf.fmt.width = timing->x_res;
1638         }
1639
1640         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1641                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1642                                 &vout->fbuf, &crop->c);
1643
1644 s_crop_err:
1645         mutex_unlock(&vout->lock);
1646         return ret;
1647 }
1648
1649 static int vidioc_queryctrl(struct file *file, void *fh,
1650                 struct v4l2_queryctrl *ctrl)
1651 {
1652         int ret = 0;
1653
1654         switch (ctrl->id) {
1655         case V4L2_CID_ROTATE:
1656                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1657                 break;
1658         case V4L2_CID_BG_COLOR:
1659                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1660                 break;
1661         case V4L2_CID_VFLIP:
1662                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1663                 break;
1664         default:
1665                 ctrl->name[0] = '\0';
1666                 ret = -EINVAL;
1667         }
1668         return ret;
1669 }
1670
1671 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1672 {
1673         int ret = 0;
1674         struct omap_vout_device *vout = fh;
1675
1676         switch (ctrl->id) {
1677         case V4L2_CID_ROTATE:
1678                 ctrl->value = vout->control[0].value;
1679                 break;
1680         case V4L2_CID_BG_COLOR:
1681         {
1682                 struct omap_overlay_manager_info info;
1683                 struct omap_overlay *ovl;
1684
1685                 ovl = vout->vid_info.overlays[0];
1686                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1687                         ret = -EINVAL;
1688                         break;
1689                 }
1690
1691                 ovl->manager->get_manager_info(ovl->manager, &info);
1692                 ctrl->value = info.default_color;
1693                 break;
1694         }
1695         case V4L2_CID_VFLIP:
1696                 ctrl->value = vout->control[2].value;
1697                 break;
1698         default:
1699                 ret = -EINVAL;
1700         }
1701         return ret;
1702 }
1703
1704 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1705 {
1706         int ret = 0;
1707         struct omap_vout_device *vout = fh;
1708
1709         switch (a->id) {
1710         case V4L2_CID_ROTATE:
1711         {
1712                 int rotation = a->value;
1713
1714                 mutex_lock(&vout->lock);
1715
1716                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1717                         mutex_unlock(&vout->lock);
1718                         ret = -EINVAL;
1719                         break;
1720                 }
1721
1722                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1723                                                         vout->mirror)) {
1724                         mutex_unlock(&vout->lock);
1725                         ret = -EINVAL;
1726                         break;
1727                 }
1728
1729                 vout->control[0].value = rotation;
1730                 mutex_unlock(&vout->lock);
1731                 break;
1732         }
1733         case V4L2_CID_BG_COLOR:
1734         {
1735                 struct omap_overlay *ovl;
1736                 unsigned int  color = a->value;
1737                 struct omap_overlay_manager_info info;
1738
1739                 ovl = vout->vid_info.overlays[0];
1740
1741                 mutex_lock(&vout->lock);
1742                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1743                         mutex_unlock(&vout->lock);
1744                         ret = -EINVAL;
1745                         break;
1746                 }
1747
1748                 ovl->manager->get_manager_info(ovl->manager, &info);
1749                 info.default_color = color;
1750                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1751                         mutex_unlock(&vout->lock);
1752                         ret = -EINVAL;
1753                         break;
1754                 }
1755
1756                 vout->control[1].value = color;
1757                 mutex_unlock(&vout->lock);
1758                 break;
1759         }
1760         case V4L2_CID_VFLIP:
1761         {
1762                 struct omap_overlay *ovl;
1763                 struct omapvideo_info *ovid;
1764                 unsigned int  mirror = a->value;
1765
1766                 ovid = &vout->vid_info;
1767                 ovl = ovid->overlays[0];
1768
1769                 mutex_lock(&vout->lock);
1770
1771                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1772                         mutex_unlock(&vout->lock);
1773                         ret = -EINVAL;
1774                         break;
1775                 }
1776                 vout->mirror = mirror;
1777                 vout->control[2].value = mirror;
1778                 mutex_unlock(&vout->lock);
1779                 break;
1780         }
1781         default:
1782                 ret = -EINVAL;
1783         }
1784         return ret;
1785 }
1786
1787 static int vidioc_reqbufs(struct file *file, void *fh,
1788                         struct v4l2_requestbuffers *req)
1789 {
1790         int ret = 0;
1791         unsigned int i, num_buffers = 0;
1792         struct omap_vout_device *vout = fh;
1793         struct videobuf_queue *q = &vout->vbq;
1794
1795         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1796                 return -EINVAL;
1797         /* if memory is not mmp or userptr
1798            return error */
1799         if ((V4L2_MEMORY_MMAP != req->memory) &&
1800                         (V4L2_MEMORY_USERPTR != req->memory))
1801                 return -EINVAL;
1802
1803         mutex_lock(&vout->lock);
1804         /* Cannot be requested when streaming is on */
1805         if (vout->streaming) {
1806                 ret = -EBUSY;
1807                 goto reqbuf_err;
1808         }
1809
1810         /* If buffers are already allocated free them */
1811         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1812                 if (vout->mmap_count) {
1813                         ret = -EBUSY;
1814                         goto reqbuf_err;
1815                 }
1816                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1817                         video1_numbuffers : video2_numbuffers;
1818                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1819                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1820                                         vout->buffer_size);
1821                         vout->buf_virt_addr[i] = 0;
1822                         vout->buf_phy_addr[i] = 0;
1823                 }
1824                 vout->buffer_allocated = num_buffers;
1825                 videobuf_mmap_free(q);
1826         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1827                 if (vout->buffer_allocated) {
1828                         videobuf_mmap_free(q);
1829                         for (i = 0; i < vout->buffer_allocated; i++) {
1830                                 kfree(q->bufs[i]);
1831                                 q->bufs[i] = NULL;
1832                         }
1833                         vout->buffer_allocated = 0;
1834                 }
1835         }
1836
1837         /*store the memory type in data structure */
1838         vout->memory = req->memory;
1839
1840         INIT_LIST_HEAD(&vout->dma_queue);
1841
1842         /* call videobuf_reqbufs api */
1843         ret = videobuf_reqbufs(q, req);
1844         if (ret < 0)
1845                 goto reqbuf_err;
1846
1847         vout->buffer_allocated = req->count;
1848
1849 reqbuf_err:
1850         mutex_unlock(&vout->lock);
1851         return ret;
1852 }
1853
1854 static int vidioc_querybuf(struct file *file, void *fh,
1855                         struct v4l2_buffer *b)
1856 {
1857         struct omap_vout_device *vout = fh;
1858
1859         return videobuf_querybuf(&vout->vbq, b);
1860 }
1861
1862 static int vidioc_qbuf(struct file *file, void *fh,
1863                         struct v4l2_buffer *buffer)
1864 {
1865         struct omap_vout_device *vout = fh;
1866         struct videobuf_queue *q = &vout->vbq;
1867
1868         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1869                         (buffer->index >= vout->buffer_allocated) ||
1870                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1871                 return -EINVAL;
1872         }
1873         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1874                 if ((buffer->length < vout->pix.sizeimage) ||
1875                                 (0 == buffer->m.userptr)) {
1876                         return -EINVAL;
1877                 }
1878         }
1879
1880         if ((rotation_enabled(vout)) &&
1881                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1882                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1883                                 "DMA Channel not allocated for Rotation\n");
1884                 return -EINVAL;
1885         }
1886
1887         return videobuf_qbuf(q, buffer);
1888 }
1889
1890 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1891 {
1892         struct omap_vout_device *vout = fh;
1893         struct videobuf_queue *q = &vout->vbq;
1894
1895         if (!vout->streaming)
1896                 return -EINVAL;
1897
1898         if (file->f_flags & O_NONBLOCK)
1899                 /* Call videobuf_dqbuf for non blocking mode */
1900                 return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1901         else
1902                 /* Call videobuf_dqbuf for  blocking mode */
1903                 return videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1904 }
1905
1906 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1907 {
1908         int ret = 0, j;
1909         u32 addr = 0, mask = 0;
1910         struct omap_vout_device *vout = fh;
1911         struct videobuf_queue *q = &vout->vbq;
1912         struct omapvideo_info *ovid = &vout->vid_info;
1913
1914         mutex_lock(&vout->lock);
1915
1916         if (vout->streaming) {
1917                 ret = -EBUSY;
1918                 goto streamon_err;
1919         }
1920
1921         ret = videobuf_streamon(q);
1922         if (ret)
1923                 goto streamon_err;
1924
1925         if (list_empty(&vout->dma_queue)) {
1926                 ret = -EIO;
1927                 goto streamon_err1;
1928         }
1929
1930         /* Get the next frame from the buffer queue */
1931         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1932                         struct videobuf_buffer, queue);
1933         /* Remove buffer from the buffer queue */
1934         list_del(&vout->cur_frm->queue);
1935         /* Mark state of the current frame to active */
1936         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1937         /* Initialize field_id and started member */
1938         vout->field_id = 0;
1939
1940         /* set flag here. Next QBUF will start DMA */
1941         vout->streaming = 1;
1942
1943         vout->first_int = 1;
1944
1945         if (omap_vout_calculate_offset(vout)) {
1946                 ret = -EINVAL;
1947                 goto streamon_err1;
1948         }
1949         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1950                 + vout->cropped_offset;
1951
1952         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
1953
1954         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1955
1956         for (j = 0; j < ovid->num_overlays; j++) {
1957                 struct omap_overlay *ovl = ovid->overlays[j];
1958
1959                 if (ovl->manager && ovl->manager->device) {
1960                         struct omap_overlay_info info;
1961                         ovl->get_overlay_info(ovl, &info);
1962                         info.enabled = 1;
1963                         info.paddr = addr;
1964                         if (ovl->set_overlay_info(ovl, &info)) {
1965                                 ret = -EINVAL;
1966                                 goto streamon_err1;
1967                         }
1968                 }
1969         }
1970
1971         /* First save the configuration in ovelray structure */
1972         ret = omapvid_init(vout, addr);
1973         if (ret)
1974                 v4l2_err(&vout->vid_dev->v4l2_dev,
1975                                 "failed to set overlay info\n");
1976         /* Enable the pipeline and set the Go bit */
1977         ret = omapvid_apply_changes(vout);
1978         if (ret)
1979                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1980
1981         ret = 0;
1982
1983 streamon_err1:
1984         if (ret)
1985                 ret = videobuf_streamoff(q);
1986 streamon_err:
1987         mutex_unlock(&vout->lock);
1988         return ret;
1989 }
1990
1991 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1992 {
1993         u32 mask = 0;
1994         int ret = 0, j;
1995         struct omap_vout_device *vout = fh;
1996         struct omapvideo_info *ovid = &vout->vid_info;
1997
1998         if (!vout->streaming)
1999                 return -EINVAL;
2000
2001         vout->streaming = 0;
2002         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
2003
2004         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
2005
2006         for (j = 0; j < ovid->num_overlays; j++) {
2007                 struct omap_overlay *ovl = ovid->overlays[j];
2008
2009                 if (ovl->manager && ovl->manager->device) {
2010                         struct omap_overlay_info info;
2011
2012                         ovl->get_overlay_info(ovl, &info);
2013                         info.enabled = 0;
2014                         ret = ovl->set_overlay_info(ovl, &info);
2015                         if (ret)
2016                                 v4l2_err(&vout->vid_dev->v4l2_dev,
2017                                 "failed to update overlay info in streamoff\n");
2018                 }
2019         }
2020
2021         /* Turn of the pipeline */
2022         ret = omapvid_apply_changes(vout);
2023         if (ret)
2024                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
2025                                 " streamoff\n");
2026
2027         INIT_LIST_HEAD(&vout->dma_queue);
2028         ret = videobuf_streamoff(&vout->vbq);
2029
2030         return ret;
2031 }
2032
2033 static int vidioc_s_fbuf(struct file *file, void *fh,
2034                                 struct v4l2_framebuffer *a)
2035 {
2036         int enable = 0;
2037         struct omap_overlay *ovl;
2038         struct omapvideo_info *ovid;
2039         struct omap_vout_device *vout = fh;
2040         struct omap_overlay_manager_info info;
2041         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
2042
2043         ovid = &vout->vid_info;
2044         ovl = ovid->overlays[0];
2045
2046         /* OMAP DSS doesn't support Source and Destination color
2047            key together */
2048         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
2049                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
2050                 return -EINVAL;
2051         /* OMAP DSS Doesn't support the Destination color key
2052            and alpha blending together */
2053         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
2054                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
2055                 return -EINVAL;
2056
2057         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
2058                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2059                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
2060         } else
2061                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2062
2063         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
2064                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
2065                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
2066         } else
2067                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
2068
2069         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
2070                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
2071                 enable = 1;
2072         else
2073                 enable = 0;
2074         if (ovl->manager && ovl->manager->get_manager_info &&
2075                         ovl->manager->set_manager_info) {
2076
2077                 ovl->manager->get_manager_info(ovl->manager, &info);
2078                 info.trans_enabled = enable;
2079                 info.trans_key_type = key_type;
2080                 info.trans_key = vout->win.chromakey;
2081
2082                 if (ovl->manager->set_manager_info(ovl->manager, &info))
2083                         return -EINVAL;
2084         }
2085         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
2086                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
2087                 enable = 1;
2088         } else {
2089                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
2090                 enable = 0;
2091         }
2092         if (ovl->manager && ovl->manager->get_manager_info &&
2093                         ovl->manager->set_manager_info) {
2094                 ovl->manager->get_manager_info(ovl->manager, &info);
2095                 info.alpha_enabled = enable;
2096                 if (ovl->manager->set_manager_info(ovl->manager, &info))
2097                         return -EINVAL;
2098         }
2099
2100         return 0;
2101 }
2102
2103 static int vidioc_g_fbuf(struct file *file, void *fh,
2104                 struct v4l2_framebuffer *a)
2105 {
2106         struct omap_overlay *ovl;
2107         struct omapvideo_info *ovid;
2108         struct omap_vout_device *vout = fh;
2109         struct omap_overlay_manager_info info;
2110
2111         ovid = &vout->vid_info;
2112         ovl = ovid->overlays[0];
2113
2114         a->flags = 0x0;
2115         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
2116                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
2117
2118         if (ovl->manager && ovl->manager->get_manager_info) {
2119                 ovl->manager->get_manager_info(ovl->manager, &info);
2120                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
2121                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
2122                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
2123                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
2124         }
2125         if (ovl->manager && ovl->manager->get_manager_info) {
2126                 ovl->manager->get_manager_info(ovl->manager, &info);
2127                 if (info.alpha_enabled)
2128                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
2129         }
2130
2131         return 0;
2132 }
2133
2134 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
2135         .vidioc_querycap                        = vidioc_querycap,
2136         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
2137         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
2138         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
2139         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
2140         .vidioc_queryctrl                       = vidioc_queryctrl,
2141         .vidioc_g_ctrl                          = vidioc_g_ctrl,
2142         .vidioc_s_fbuf                          = vidioc_s_fbuf,
2143         .vidioc_g_fbuf                          = vidioc_g_fbuf,
2144         .vidioc_s_ctrl                          = vidioc_s_ctrl,
2145         .vidioc_try_fmt_vid_overlay             = vidioc_try_fmt_vid_overlay,
2146         .vidioc_s_fmt_vid_overlay               = vidioc_s_fmt_vid_overlay,
2147         .vidioc_enum_fmt_vid_overlay            = vidioc_enum_fmt_vid_overlay,
2148         .vidioc_g_fmt_vid_overlay               = vidioc_g_fmt_vid_overlay,
2149         .vidioc_cropcap                         = vidioc_cropcap,
2150         .vidioc_g_crop                          = vidioc_g_crop,
2151         .vidioc_s_crop                          = vidioc_s_crop,
2152         .vidioc_reqbufs                         = vidioc_reqbufs,
2153         .vidioc_querybuf                        = vidioc_querybuf,
2154         .vidioc_qbuf                            = vidioc_qbuf,
2155         .vidioc_dqbuf                           = vidioc_dqbuf,
2156         .vidioc_streamon                        = vidioc_streamon,
2157         .vidioc_streamoff                       = vidioc_streamoff,
2158 };
2159
2160 static const struct v4l2_file_operations omap_vout_fops = {
2161         .owner          = THIS_MODULE,
2162         .unlocked_ioctl = video_ioctl2,
2163         .mmap           = omap_vout_mmap,
2164         .open           = omap_vout_open,
2165         .release        = omap_vout_release,
2166 };
2167
2168 /* Init functions used during driver initialization */
2169 /* Initial setup of video_data */
2170 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
2171 {
2172         struct video_device *vfd;
2173         struct v4l2_pix_format *pix;
2174         struct v4l2_control *control;
2175         struct omap_dss_device *display =
2176                 vout->vid_info.overlays[0]->manager->device;
2177
2178         /* set the default pix */
2179         pix = &vout->pix;
2180
2181         /* Set the default picture of QVGA  */
2182         pix->width = QQVGA_WIDTH;
2183         pix->height = QQVGA_HEIGHT;
2184
2185         /* Default pixel format is RGB 5-6-5 */
2186         pix->pixelformat = V4L2_PIX_FMT_RGB565;
2187         pix->field = V4L2_FIELD_ANY;
2188         pix->bytesperline = pix->width * 2;
2189         pix->sizeimage = pix->bytesperline * pix->height;
2190         pix->priv = 0;
2191         pix->colorspace = V4L2_COLORSPACE_JPEG;
2192
2193         vout->bpp = RGB565_BPP;
2194         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
2195         vout->fbuf.fmt.height =  display->panel.timings.y_res;
2196
2197         /* Set the data structures for the overlay parameters*/
2198         vout->win.global_alpha = 255;
2199         vout->fbuf.flags = 0;
2200         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
2201                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
2202         vout->win.chromakey = 0;
2203
2204         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
2205
2206         /*Initialize the control variables for
2207           rotation, flipping and background color. */
2208         control = vout->control;
2209         control[0].id = V4L2_CID_ROTATE;
2210         control[0].value = 0;
2211         vout->rotation = 0;
2212         vout->mirror = 0;
2213         vout->control[2].id = V4L2_CID_HFLIP;
2214         vout->control[2].value = 0;
2215         vout->vrfb_bpp = 2;
2216
2217         control[1].id = V4L2_CID_BG_COLOR;
2218         control[1].value = 0;
2219
2220         /* initialize the video_device struct */
2221         vfd = vout->vfd = video_device_alloc();
2222
2223         if (!vfd) {
2224                 printk(KERN_ERR VOUT_NAME ": could not allocate"
2225                                 " video device struct\n");
2226                 return -ENOMEM;
2227         }
2228         vfd->release = video_device_release;
2229         vfd->ioctl_ops = &vout_ioctl_ops;
2230
2231         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
2232
2233         vfd->fops = &omap_vout_fops;
2234         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
2235         mutex_init(&vout->lock);
2236
2237         vfd->minor = -1;
2238         return 0;
2239
2240 }
2241
2242 /* Setup video buffers */
2243 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
2244                 int vid_num)
2245 {
2246         u32 numbuffers;
2247         int ret = 0, i, j;
2248         int image_width, image_height;
2249         struct video_device *vfd;
2250         struct omap_vout_device *vout;
2251         int static_vrfb_allocation = 0, vrfb_num_bufs = VRFB_NUM_BUFS;
2252         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2253         struct omap2video_device *vid_dev =
2254                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
2255
2256         vout = vid_dev->vouts[vid_num];
2257         vfd = vout->vfd;
2258
2259         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
2260         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
2261         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
2262
2263         for (i = 0; i < numbuffers; i++) {
2264                 vout->buf_virt_addr[i] =
2265                         omap_vout_alloc_buffer(vout->buffer_size,
2266                                         (u32 *) &vout->buf_phy_addr[i]);
2267                 if (!vout->buf_virt_addr[i]) {
2268                         numbuffers = i;
2269                         ret = -ENOMEM;
2270                         goto free_buffers;
2271                 }
2272         }
2273
2274         for (i = 0; i < VRFB_NUM_BUFS; i++) {
2275                 if (omap_vrfb_request_ctx(&vout->vrfb_context[i])) {
2276                         dev_info(&pdev->dev, ": VRFB allocation failed\n");
2277                         for (j = 0; j < i; j++)
2278                                 omap_vrfb_release_ctx(&vout->vrfb_context[j]);
2279                         ret = -ENOMEM;
2280                         goto free_buffers;
2281                 }
2282         }
2283         vout->cropped_offset = 0;
2284
2285         /* Calculate VRFB memory size */
2286         /* allocate for worst case size */
2287         image_width = VID_MAX_WIDTH / TILE_SIZE;
2288         if (VID_MAX_WIDTH % TILE_SIZE)
2289                 image_width++;
2290
2291         image_width = image_width * TILE_SIZE;
2292         image_height = VID_MAX_HEIGHT / TILE_SIZE;
2293
2294         if (VID_MAX_HEIGHT % TILE_SIZE)
2295                 image_height++;
2296
2297         image_height = image_height * TILE_SIZE;
2298         vout->smsshado_size = PAGE_ALIGN(image_width * image_height * 2 * 2);
2299
2300         /*
2301          * Request and Initialize DMA, for DMA based VRFB transfer
2302          */
2303         vout->vrfb_dma_tx.dev_id = OMAP_DMA_NO_DEVICE;
2304         vout->vrfb_dma_tx.dma_ch = -1;
2305         vout->vrfb_dma_tx.req_status = DMA_CHAN_ALLOTED;
2306         ret = omap_request_dma(vout->vrfb_dma_tx.dev_id, "VRFB DMA TX",
2307                         omap_vout_vrfb_dma_tx_callback,
2308                         (void *) &vout->vrfb_dma_tx, &vout->vrfb_dma_tx.dma_ch);
2309         if (ret < 0) {
2310                 vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
2311                 dev_info(&pdev->dev, ": failed to allocate DMA Channel for"
2312                                 " video%d\n", vfd->minor);
2313         }
2314         init_waitqueue_head(&vout->vrfb_dma_tx.wait);
2315
2316         /* Allocate VRFB buffers if selected through bootargs */
2317         static_vrfb_allocation = (vid_num == 0) ?
2318                 vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
2319
2320         /* statically allocated the VRFB buffer is done through
2321            commands line aruments */
2322         if (static_vrfb_allocation) {
2323                 if (omap_vout_allocate_vrfb_buffers(vout, &vrfb_num_bufs, -1)) {
2324                         ret =  -ENOMEM;
2325                         goto release_vrfb_ctx;
2326                 }
2327                 vout->vrfb_static_allocation = 1;
2328         }
2329         return 0;
2330
2331 release_vrfb_ctx:
2332         for (j = 0; j < VRFB_NUM_BUFS; j++)
2333                 omap_vrfb_release_ctx(&vout->vrfb_context[j]);
2334
2335 free_buffers:
2336         for (i = 0; i < numbuffers; i++) {
2337                 omap_vout_free_buffer(vout->buf_virt_addr[i],
2338                                                 vout->buffer_size);
2339                 vout->buf_virt_addr[i] = 0;
2340                 vout->buf_phy_addr[i] = 0;
2341         }
2342         return ret;
2343
2344 }
2345
2346 /* Create video out devices */
2347 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2348 {
2349         int ret = 0, k;
2350         struct omap_vout_device *vout;
2351         struct video_device *vfd = NULL;
2352         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2353         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2354                         struct omap2video_device, v4l2_dev);
2355
2356         for (k = 0; k < pdev->num_resources; k++) {
2357
2358                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2359                 if (!vout) {
2360                         dev_err(&pdev->dev, ": could not allocate memory\n");
2361                         return -ENOMEM;
2362                 }
2363
2364                 vout->vid = k;
2365                 vid_dev->vouts[k] = vout;
2366                 vout->vid_dev = vid_dev;
2367                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2368                 if (pdev->num_resources == 1)
2369                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2370                 else
2371                         /* Else select video1 and video2 one by one. */
2372                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2373                 vout->vid_info.num_overlays = 1;
2374                 vout->vid_info.id = k + 1;
2375
2376                 /* Setup the default configuration for the video devices
2377                  */
2378                 if (omap_vout_setup_video_data(vout) != 0) {
2379                         ret = -ENOMEM;
2380                         goto error;
2381                 }
2382
2383                 /* Allocate default number of buffers for the video streaming
2384                  * and reserve the VRFB space for rotation
2385                  */
2386                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2387                         ret = -ENOMEM;
2388                         goto error1;
2389                 }
2390
2391                 /* Register the Video device with V4L2
2392                  */
2393                 vfd = vout->vfd;
2394                 if (video_register_device(vfd, VFL_TYPE_GRABBER, k + 1) < 0) {
2395                         dev_err(&pdev->dev, ": Could not register "
2396                                         "Video for Linux device\n");
2397                         vfd->minor = -1;
2398                         ret = -ENODEV;
2399                         goto error2;
2400                 }
2401                 video_set_drvdata(vfd, vout);
2402
2403                 /* Configure the overlay structure */
2404                 ret = omapvid_init(vid_dev->vouts[k], 0);
2405                 if (!ret)
2406                         goto success;
2407
2408 error2:
2409                 omap_vout_release_vrfb(vout);
2410                 omap_vout_free_buffers(vout);
2411 error1:
2412                 video_device_release(vfd);
2413 error:
2414                 kfree(vout);
2415                 return ret;
2416
2417 success:
2418                 dev_info(&pdev->dev, ": registered and initialized"
2419                                 " video device %d\n", vfd->minor);
2420                 if (k == (pdev->num_resources - 1))
2421                         return 0;
2422         }
2423
2424         return -ENODEV;
2425 }
2426 /* Driver functions */
2427 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2428 {
2429         struct video_device *vfd;
2430
2431         if (!vout)
2432                 return;
2433
2434         vfd = vout->vfd;
2435         if (vfd) {
2436                 if (!video_is_registered(vfd)) {
2437                         /*
2438                          * The device was never registered, so release the
2439                          * video_device struct directly.
2440                          */
2441                         video_device_release(vfd);
2442                 } else {
2443                         /*
2444                          * The unregister function will release the video_device
2445                          * struct as well as unregistering it.
2446                          */
2447                         video_unregister_device(vfd);
2448                 }
2449         }
2450
2451         omap_vout_release_vrfb(vout);
2452         omap_vout_free_buffers(vout);
2453         /* Free the VRFB buffer if allocated
2454          * init time
2455          */
2456         if (vout->vrfb_static_allocation)
2457                 omap_vout_free_vrfb_buffers(vout);
2458
2459         kfree(vout);
2460 }
2461
2462 static int omap_vout_remove(struct platform_device *pdev)
2463 {
2464         int k;
2465         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2466         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2467                         omap2video_device, v4l2_dev);
2468
2469         v4l2_device_unregister(v4l2_dev);
2470         for (k = 0; k < pdev->num_resources; k++)
2471                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2472
2473         for (k = 0; k < vid_dev->num_displays; k++) {
2474                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2475                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2476
2477                 omap_dss_put_device(vid_dev->displays[k]);
2478         }
2479         kfree(vid_dev);
2480         return 0;
2481 }
2482
2483 static int __init omap_vout_probe(struct platform_device *pdev)
2484 {
2485         int ret = 0, i;
2486         struct omap_overlay *ovl;
2487         struct omap_dss_device *dssdev = NULL;
2488         struct omap_dss_device *def_display;
2489         struct omap2video_device *vid_dev = NULL;
2490
2491         if (pdev->num_resources == 0) {
2492                 dev_err(&pdev->dev, "probed for an unknown device\n");
2493                 return -ENODEV;
2494         }
2495
2496         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2497         if (vid_dev == NULL)
2498                 return -ENOMEM;
2499
2500         vid_dev->num_displays = 0;
2501         for_each_dss_dev(dssdev) {
2502                 omap_dss_get_device(dssdev);
2503                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2504         }
2505
2506         if (vid_dev->num_displays == 0) {
2507                 dev_err(&pdev->dev, "no displays\n");
2508                 ret = -EINVAL;
2509                 goto probe_err0;
2510         }
2511
2512         vid_dev->num_overlays = omap_dss_get_num_overlays();
2513         for (i = 0; i < vid_dev->num_overlays; i++)
2514                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2515
2516         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2517         for (i = 0; i < vid_dev->num_managers; i++)
2518                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2519
2520         /* Get the Video1 overlay and video2 overlay.
2521          * Setup the Display attached to that overlays
2522          */
2523         for (i = 1; i < vid_dev->num_overlays; i++) {
2524                 ovl = omap_dss_get_overlay(i);
2525                 if (ovl->manager && ovl->manager->device) {
2526                         def_display = ovl->manager->device;
2527                 } else {
2528                         dev_warn(&pdev->dev, "cannot find display\n");
2529                         def_display = NULL;
2530                 }
2531                 if (def_display) {
2532                         struct omap_dss_driver *dssdrv = def_display->driver;
2533
2534                         ret = dssdrv->enable(def_display);
2535                         if (ret) {
2536                                 /* Here we are not considering a error
2537                                  *  as display may be enabled by frame
2538                                  *  buffer driver
2539                                  */
2540                                 dev_warn(&pdev->dev,
2541                                         "'%s' Display already enabled\n",
2542                                         def_display->name);
2543                         }
2544                         /* set the update mode */
2545                         if (def_display->caps &
2546                                         OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2547                                 if (dssdrv->enable_te)
2548                                         dssdrv->enable_te(def_display, 0);
2549                                 if (dssdrv->set_update_mode)
2550                                         dssdrv->set_update_mode(def_display,
2551                                                         OMAP_DSS_UPDATE_MANUAL);
2552                         } else {
2553                                 if (dssdrv->set_update_mode)
2554                                         dssdrv->set_update_mode(def_display,
2555                                                         OMAP_DSS_UPDATE_AUTO);
2556                         }
2557                 }
2558         }
2559
2560         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2561                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2562                 ret = -ENODEV;
2563                 goto probe_err1;
2564         }
2565
2566         ret = omap_vout_create_video_devices(pdev);
2567         if (ret)
2568                 goto probe_err2;
2569
2570         for (i = 0; i < vid_dev->num_displays; i++) {
2571                 struct omap_dss_device *display = vid_dev->displays[i];
2572
2573                 if (display->driver->update)
2574                         display->driver->update(display, 0, 0,
2575                                         display->panel.timings.x_res,
2576                                         display->panel.timings.y_res);
2577         }
2578         return 0;
2579
2580 probe_err2:
2581         v4l2_device_unregister(&vid_dev->v4l2_dev);
2582 probe_err1:
2583         for (i = 1; i < vid_dev->num_overlays; i++) {
2584                 def_display = NULL;
2585                 ovl = omap_dss_get_overlay(i);
2586                 if (ovl->manager && ovl->manager->device)
2587                         def_display = ovl->manager->device;
2588
2589                 if (def_display && def_display->driver)
2590                         def_display->driver->disable(def_display);
2591         }
2592 probe_err0:
2593         kfree(vid_dev);
2594         return ret;
2595 }
2596
2597 static struct platform_driver omap_vout_driver = {
2598         .driver = {
2599                 .name = VOUT_NAME,
2600         },
2601         .probe = omap_vout_probe,
2602         .remove = omap_vout_remove,
2603 };
2604
2605 static int __init omap_vout_init(void)
2606 {
2607         if (platform_driver_register(&omap_vout_driver) != 0) {
2608                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2609                 return -EINVAL;
2610         }
2611         return 0;
2612 }
2613
2614 static void omap_vout_cleanup(void)
2615 {
2616         platform_driver_unregister(&omap_vout_driver);
2617 }
2618
2619 late_initcall(omap_vout_init);
2620 module_exit(omap_vout_cleanup);