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/irq.h>
  39 #include <linux/videodev2.h>
  40 #include <linux/dma-mapping.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/vrfb.h>
  49 #include <video/omapdss.h>
  50
  51 #include "omap_voutlib.h"
  52 #include "omap_voutdef.h"
  53 #include "omap_vout_vrfb.h"
  54
  55 MODULE_AUTHOR("Texas Instruments");
  56 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
  57 MODULE_LICENSE("GPL");
  58
  59 /* Driver Configuration macros */
  60 #define VOUT_NAME               "omap_vout"
  61
  62 enum omap_vout_channels {
  63         OMAP_VIDEO1,
  64         OMAP_VIDEO2,
  65 };
  66
  67 static struct videobuf_queue_ops video_vbq_ops;
  68 /* Variables configurable through module params*/
  69 static u32 video1_numbuffers = 3;
  70 static u32 video2_numbuffers = 3;
  71 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  72 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  73 static u32 vid1_static_vrfb_alloc;
  74 static u32 vid2_static_vrfb_alloc;
  75 static int debug;
  76
  77 /* Module parameters */
  78 module_param(video1_numbuffers, uint, S_IRUGO);
  79 MODULE_PARM_DESC(video1_numbuffers,
  80         "Number of buffers to be allocated at init time for Video1 device.");
  81
  82 module_param(video2_numbuffers, uint, S_IRUGO);
  83 MODULE_PARM_DESC(video2_numbuffers,
  84         "Number of buffers to be allocated at init time for Video2 device.");
  85
  86 module_param(video1_bufsize, uint, S_IRUGO);
  87 MODULE_PARM_DESC(video1_bufsize,
  88         "Size of the buffer to be allocated for video1 device");
  89
  90 module_param(video2_bufsize, uint, S_IRUGO);
  91 MODULE_PARM_DESC(video2_bufsize,
  92         "Size of the buffer to be allocated for video2 device");
  93
  94 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
  95 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
  96         "Static allocation of the VRFB buffer for video1 device");
  97
  98 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
  99 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
 100         "Static allocation of the VRFB buffer for video2 device");
 101
 102 module_param(debug, bool, S_IRUGO);
 103 MODULE_PARM_DESC(debug, "Debug level (0-1)");
 104
 105 /* list of image formats supported by OMAP2 video pipelines */
 106 static const struct v4l2_fmtdesc omap_formats[] = {
 107         {
 108                 /* Note:  V4L2 defines RGB565 as:
 109                  *
 110                  *      Byte 0                    Byte 1
 111                  *      g2 g1 g0 r4 r3 r2 r1 r0   b4 b3 b2 b1 b0 g5 g4 g3
 112                  *
 113                  * We interpret RGB565 as:
 114                  *
 115                  *      Byte 0                    Byte 1
 116                  *      g2 g1 g0 b4 b3 b2 b1 b0   r4 r3 r2 r1 r0 g5 g4 g3
 117                  */
 118                 .description = "RGB565, le",
 119                 .pixelformat = V4L2_PIX_FMT_RGB565,
 120         },
 121         {
 122                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
 123                  *  this for RGB24 unpack mode, the last 8 bits are ignored
 124                  * */
 125                 .description = "RGB32, le",
 126                 .pixelformat = V4L2_PIX_FMT_RGB32,
 127         },
 128         {
 129                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
 130                  *        this for RGB24 packed mode
 131                  *
 132                  */
 133                 .description = "RGB24, le",
 134                 .pixelformat = V4L2_PIX_FMT_RGB24,
 135         },
 136         {
 137                 .description = "YUYV (YUV 4:2:2), packed",
 138                 .pixelformat = V4L2_PIX_FMT_YUYV,
 139         },
 140         {
 141                 .description = "UYVY, packed",
 142                 .pixelformat = V4L2_PIX_FMT_UYVY,
 143         },
 144 };
 145
 146 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
 147
 148 /*
 149  * Try format
 150  */
 151 static int omap_vout_try_format(struct v4l2_pix_format *pix)
 152 {
 153         int ifmt, bpp = 0;
 154
 155         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
 156                                                 (u32)VID_MAX_HEIGHT);
 157         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
 158
 159         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
 160                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
 161                         break;
 162         }
 163
 164         if (ifmt == NUM_OUTPUT_FORMATS)
 165                 ifmt = 0;
 166
 167         pix->pixelformat = omap_formats[ifmt].pixelformat;
 168         pix->field = V4L2_FIELD_ANY;
 169         pix->priv = 0;
 170
 171         switch (pix->pixelformat) {
 172         case V4L2_PIX_FMT_YUYV:
 173         case V4L2_PIX_FMT_UYVY:
 174         default:
 175                 pix->colorspace = V4L2_COLORSPACE_JPEG;
 176                 bpp = YUYV_BPP;
 177                 break;
 178         case V4L2_PIX_FMT_RGB565:
 179         case V4L2_PIX_FMT_RGB565X:
 180                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 181                 bpp = RGB565_BPP;
 182                 break;
 183         case V4L2_PIX_FMT_RGB24:
 184                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 185                 bpp = RGB24_BPP;
 186                 break;
 187         case V4L2_PIX_FMT_RGB32:
 188         case V4L2_PIX_FMT_BGR32:
 189                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 190                 bpp = RGB32_BPP;
 191                 break;
 192         }
 193         pix->bytesperline = pix->width * bpp;
 194         pix->sizeimage = pix->bytesperline * pix->height;
 195
 196         return bpp;
 197 }
 198
 199 /*
 200  * omap_vout_uservirt_to_phys: This inline function is used to convert user
 201  * space virtual address to physical address.
 202  */
 203 static u32 omap_vout_uservirt_to_phys(u32 virtp)
 204 {
 205         unsigned long physp = 0;
 206         struct vm_area_struct *vma;
 207         struct mm_struct *mm = current->mm;
 208
 209         /* For kernel direct-mapped memory, take the easy way */
 210         if (virtp >= PAGE_OFFSET)
 211                 return virt_to_phys((void *) virtp);
 212
 213         down_read(&current->mm->mmap_sem);
 214         vma = find_vma(mm, virtp);
 215         if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
 216                 /* this will catch, kernel-allocated, mmaped-to-usermode
 217                    addresses */
 218                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
 219                 up_read(&current->mm->mmap_sem);
 220         } else {
 221                 /* otherwise, use get_user_pages() for general userland pages */
 222                 int res, nr_pages = 1;
 223                 struct page *pages;
 224
 225                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
 226                                 0, &pages, NULL);
 227                 up_read(&current->mm->mmap_sem);
 228
 229                 if (res == nr_pages) {
 230                         physp =  __pa(page_address(&pages[0]) +
 231                                         (virtp & ~PAGE_MASK));
 232                 } else {
 233                         printk(KERN_WARNING VOUT_NAME
 234                                         "get_user_pages failed\n");
 235                         return 0;
 236                 }
 237         }
 238
 239         return physp;
 240 }
 241
 242 /*
 243  * Free the V4L2 buffers
 244  */
 245 void omap_vout_free_buffers(struct omap_vout_device *vout)
 246 {
 247         int i, numbuffers;
 248
 249         /* Allocate memory for the buffers */
 250         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
 251         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
 252
 253         for (i = 0; i < numbuffers; i++) {
 254                 omap_vout_free_buffer(vout->buf_virt_addr[i],
 255                                 vout->buffer_size);
 256                 vout->buf_phy_addr[i] = 0;
 257                 vout->buf_virt_addr[i] = 0;
 258         }
 259 }
 260
 261 /*
 262  * Convert V4L2 rotation to DSS rotation
 263  *      V4L2 understand 0, 90, 180, 270.
 264  *      Convert to 0, 1, 2 and 3 respectively for DSS
 265  */
 266 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
 267                         enum dss_rotation *rotation, bool mirror)
 268 {
 269         int ret = 0;
 270
 271         switch (v4l2_rotation) {
 272         case 90:
 273                 *rotation = dss_rotation_90_degree;
 274                 break;
 275         case 180:
 276                 *rotation = dss_rotation_180_degree;
 277                 break;
 278         case 270:
 279                 *rotation = dss_rotation_270_degree;
 280                 break;
 281         case 0:
 282                 *rotation = dss_rotation_0_degree;
 283                 break;
 284         default:
 285                 ret = -EINVAL;
 286         }
 287         return ret;
 288 }
 289
 290 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
 291 {
 292         struct omapvideo_info *ovid;
 293         struct v4l2_rect *crop = &vout->crop;
 294         struct v4l2_pix_format *pix = &vout->pix;
 295         int *cropped_offset = &vout->cropped_offset;
 296         int ps = 2, line_length = 0;
 297
 298         ovid = &vout->vid_info;
 299
 300         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 301                 omap_vout_calculate_vrfb_offset(vout);
 302         } else {
 303                 vout->line_length = line_length = pix->width;
 304
 305                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
 306                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
 307                         ps = 2;
 308                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
 309                         ps = 4;
 310                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
 311                         ps = 3;
 312
 313                 vout->ps = ps;
 314
 315                 *cropped_offset = (line_length * ps) *
 316                         crop->top + crop->left * ps;
 317         }
 318
 319         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
 320                         __func__, vout->cropped_offset);
 321
 322         return 0;
 323 }
 324
 325 /*
 326  * Convert V4L2 pixel format to DSS pixel format
 327  */
 328 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
 329 {
 330         struct omap_overlay *ovl;
 331         struct omapvideo_info *ovid;
 332         struct v4l2_pix_format *pix = &vout->pix;
 333         enum omap_color_mode mode;
 334
 335         ovid = &vout->vid_info;
 336         ovl = ovid->overlays[0];
 337
 338         switch (pix->pixelformat) {
 339         case 0:
 340                 break;
 341         case V4L2_PIX_FMT_YUYV:
 342                 mode = OMAP_DSS_COLOR_YUV2;
 343                 break;
 344         case V4L2_PIX_FMT_UYVY:
 345                 mode = OMAP_DSS_COLOR_UYVY;
 346                 break;
 347         case V4L2_PIX_FMT_RGB565:
 348                 mode = OMAP_DSS_COLOR_RGB16;
 349                 break;
 350         case V4L2_PIX_FMT_RGB24:
 351                 mode = OMAP_DSS_COLOR_RGB24P;
 352                 break;
 353         case V4L2_PIX_FMT_RGB32:
 354                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
 355                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
 356                 break;
 357         case V4L2_PIX_FMT_BGR32:
 358                 mode = OMAP_DSS_COLOR_RGBX32;
 359                 break;
 360         default:
 361                 mode = -EINVAL;
 362         }
 363         return mode;
 364 }
 365
 366 /*
 367  * Setup the overlay
 368  */
 369 static int omapvid_setup_overlay(struct omap_vout_device *vout,
 370                 struct omap_overlay *ovl, int posx, int posy, int outw,
 371                 int outh, u32 addr)
 372 {
 373         int ret = 0;
 374         struct omap_overlay_info info;
 375         int cropheight, cropwidth, pixheight, pixwidth;
 376
 377         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
 378                         (outw != vout->pix.width || outh != vout->pix.height)) {
 379                 ret = -EINVAL;
 380                 goto setup_ovl_err;
 381         }
 382
 383         vout->dss_mode = video_mode_to_dss_mode(vout);
 384         if (vout->dss_mode == -EINVAL) {
 385                 ret = -EINVAL;
 386                 goto setup_ovl_err;
 387         }
 388
 389         /* Setup the input plane parameters according to
 390          * rotation value selected.
 391          */
 392         if (is_rotation_90_or_270(vout)) {
 393                 cropheight = vout->crop.width;
 394                 cropwidth = vout->crop.height;
 395                 pixheight = vout->pix.width;
 396                 pixwidth = vout->pix.height;
 397         } else {
 398                 cropheight = vout->crop.height;
 399                 cropwidth = vout->crop.width;
 400                 pixheight = vout->pix.height;
 401                 pixwidth = vout->pix.width;
 402         }
 403
 404         ovl->get_overlay_info(ovl, &info);
 405         info.paddr = addr;
 406         info.width = cropwidth;
 407         info.height = cropheight;
 408         info.color_mode = vout->dss_mode;
 409         info.mirror = vout->mirror;
 410         info.pos_x = posx;
 411         info.pos_y = posy;
 412         info.out_width = outw;
 413         info.out_height = outh;
 414         info.global_alpha = vout->win.global_alpha;
 415         if (!is_rotation_enabled(vout)) {
 416                 info.rotation = 0;
 417                 info.rotation_type = OMAP_DSS_ROT_DMA;
 418                 info.screen_width = pixwidth;
 419         } else {
 420                 info.rotation = vout->rotation;
 421                 info.rotation_type = OMAP_DSS_ROT_VRFB;
 422                 info.screen_width = 2048;
 423         }
 424
 425         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 426                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
 427                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
 428                 "out_height=%d rotation_type=%d screen_width=%d\n",
 429                 __func__, info.enabled, info.paddr, info.width, info.height,
 430                 info.color_mode, info.rotation, info.mirror, info.pos_x,
 431                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
 432                 info.screen_width);
 433
 434         ret = ovl->set_overlay_info(ovl, &info);
 435         if (ret)
 436                 goto setup_ovl_err;
 437
 438         return 0;
 439
 440 setup_ovl_err:
 441         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
 442         return ret;
 443 }
 444
 445 /*
 446  * Initialize the overlay structure
 447  */
 448 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
 449 {
 450         int ret = 0, i;
 451         struct v4l2_window *win;
 452         struct omap_overlay *ovl;
 453         int posx, posy, outw, outh, temp;
 454         struct omap_video_timings *timing;
 455         struct omapvideo_info *ovid = &vout->vid_info;
 456
 457         win = &vout->win;
 458         for (i = 0; i < ovid->num_overlays; i++) {
 459                 ovl = ovid->overlays[i];
 460                 if (!ovl->manager || !ovl->manager->device)
 461                         return -EINVAL;
 462
 463                 timing = &ovl->manager->device->panel.timings;
 464
 465                 outw = win->w.width;
 466                 outh = win->w.height;
 467                 switch (vout->rotation) {
 468                 case dss_rotation_90_degree:
 469                         /* Invert the height and width for 90
 470                          * and 270 degree rotation
 471                          */
 472                         temp = outw;
 473                         outw = outh;
 474                         outh = temp;
 475                         posy = (timing->y_res - win->w.width) - win->w.left;
 476                         posx = win->w.top;
 477                         break;
 478
 479                 case dss_rotation_180_degree:
 480                         posx = (timing->x_res - win->w.width) - win->w.left;
 481                         posy = (timing->y_res - win->w.height) - win->w.top;
 482                         break;
 483
 484                 case dss_rotation_270_degree:
 485                         temp = outw;
 486                         outw = outh;
 487                         outh = temp;
 488                         posy = win->w.left;
 489                         posx = (timing->x_res - win->w.height) - win->w.top;
 490                         break;
 491
 492                 default:
 493                         posx = win->w.left;
 494                         posy = win->w.top;
 495                         break;
 496                 }
 497
 498                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
 499                                 outw, outh, addr);
 500                 if (ret)
 501                         goto omapvid_init_err;
 502         }
 503         return 0;
 504
 505 omapvid_init_err:
 506         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
 507         return ret;
 508 }
 509
 510 /*
 511  * Apply the changes set the go bit of DSS
 512  */
 513 static int omapvid_apply_changes(struct omap_vout_device *vout)
 514 {
 515         int i;
 516         struct omap_overlay *ovl;
 517         struct omapvideo_info *ovid = &vout->vid_info;
 518
 519         for (i = 0; i < ovid->num_overlays; i++) {
 520                 ovl = ovid->overlays[i];
 521                 if (!ovl->manager || !ovl->manager->device)
 522                         return -EINVAL;
 523                 ovl->manager->apply(ovl->manager);
 524         }
 525
 526         return 0;
 527 }
 528
 529 static void omap_vout_isr(void *arg, unsigned int irqstatus)
 530 {
 531         int ret;
 532         u32 addr, fid;
 533         struct omap_overlay *ovl;
 534         struct timeval timevalue;
 535         struct omapvideo_info *ovid;
 536         struct omap_dss_device *cur_display;
 537         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
 538
 539         if (!vout->streaming)
 540                 return;
 541
 542         ovid = &vout->vid_info;
 543         ovl = ovid->overlays[0];
 544         /* get the display device attached to the overlay */
 545         if (!ovl->manager || !ovl->manager->device)
 546                 return;
 547
 548         cur_display = ovl->manager->device;
 549
 550         spin_lock(&vout->vbq_lock);
 551         do_gettimeofday(&timevalue);
 552
 553         if (cur_display->type != OMAP_DISPLAY_TYPE_VENC) {
 554                 switch (cur_display->type) {
 555                 case OMAP_DISPLAY_TYPE_DPI:
 556                         if (!(irqstatus & (DISPC_IRQ_VSYNC | DISPC_IRQ_VSYNC2)))
 557                                 goto vout_isr_err;
 558                         break;
 559                 case OMAP_DISPLAY_TYPE_HDMI:
 560                         if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
 561                                 goto vout_isr_err;
 562                         break;
 563                 default:
 564                         goto vout_isr_err;
 565                 }
 566                 if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
 567                         vout->cur_frm->ts = timevalue;
 568                         vout->cur_frm->state = VIDEOBUF_DONE;
 569                         wake_up_interruptible(&vout->cur_frm->done);
 570                         vout->cur_frm = vout->next_frm;
 571                 }
 572                 vout->first_int = 0;
 573                 if (list_empty(&vout->dma_queue))
 574                         goto vout_isr_err;
 575
 576                 vout->next_frm = list_entry(vout->dma_queue.next,
 577                                 struct videobuf_buffer, queue);
 578                 list_del(&vout->next_frm->queue);
 579
 580                 vout->next_frm->state = VIDEOBUF_ACTIVE;
 581
 582                 addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
 583                         + vout->cropped_offset;
 584
 585                 /* First save the configuration in ovelray structure */
 586                 ret = omapvid_init(vout, addr);
 587                 if (ret)
 588                         printk(KERN_ERR VOUT_NAME
 589                                 "failed to set overlay info\n");
 590                 /* Enable the pipeline and set the Go bit */
 591                 ret = omapvid_apply_changes(vout);
 592                 if (ret)
 593                         printk(KERN_ERR VOUT_NAME "failed to change mode\n");
 594         } else {
 595
 596                 if (vout->first_int) {
 597                         vout->first_int = 0;
 598                         goto vout_isr_err;
 599                 }
 600                 if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
 601                         fid = 1;
 602                 else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
 603                         fid = 0;
 604                 else
 605                         goto vout_isr_err;
 606
 607                 vout->field_id ^= 1;
 608                 if (fid != vout->field_id) {
 609                         if (0 == fid)
 610                                 vout->field_id = fid;
 611
 612                         goto vout_isr_err;
 613                 }
 614                 if (0 == fid) {
 615                         if (vout->cur_frm == vout->next_frm)
 616                                 goto vout_isr_err;
 617
 618                         vout->cur_frm->ts = timevalue;
 619                         vout->cur_frm->state = VIDEOBUF_DONE;
 620                         wake_up_interruptible(&vout->cur_frm->done);
 621                         vout->cur_frm = vout->next_frm;
 622                 } else if (1 == fid) {
 623                         if (list_empty(&vout->dma_queue) ||
 624                                         (vout->cur_frm != vout->next_frm))
 625                                 goto vout_isr_err;
 626
 627                         vout->next_frm = list_entry(vout->dma_queue.next,
 628                                         struct videobuf_buffer, queue);
 629                         list_del(&vout->next_frm->queue);
 630
 631                         vout->next_frm->state = VIDEOBUF_ACTIVE;
 632                         addr = (unsigned long)
 633                                 vout->queued_buf_addr[vout->next_frm->i] +
 634                                 vout->cropped_offset;
 635                         /* First save the configuration in ovelray structure */
 636                         ret = omapvid_init(vout, addr);
 637                         if (ret)
 638                                 printk(KERN_ERR VOUT_NAME
 639                                                 "failed to set overlay info\n");
 640                         /* Enable the pipeline and set the Go bit */
 641                         ret = omapvid_apply_changes(vout);
 642                         if (ret)
 643                                 printk(KERN_ERR VOUT_NAME
 644                                                 "failed to change mode\n");
 645                 }
 646
 647         }
 648
 649 vout_isr_err:
 650         spin_unlock(&vout->vbq_lock);
 651 }
 652
 653
 654 /* Video buffer call backs */
 655
 656 /*
 657  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
 658  * called. This is used to setup buffers and return size and count of
 659  * buffers allocated. After the call to this buffer, videobuf layer will
 660  * setup buffer queue depending on the size and count of buffers
 661  */
 662 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 663                           unsigned int *size)
 664 {
 665         int startindex = 0, i, j;
 666         u32 phy_addr = 0, virt_addr = 0;
 667         struct omap_vout_device *vout = q->priv_data;
 668         struct omapvideo_info *ovid = &vout->vid_info;
 669
 670         if (!vout)
 671                 return -EINVAL;
 672
 673         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
 674                 return -EINVAL;
 675
 676         startindex = (vout->vid == OMAP_VIDEO1) ?
 677                 video1_numbuffers : video2_numbuffers;
 678         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
 679                 *count = startindex;
 680
 681         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 682                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
 683                         return -ENOMEM;
 684         }
 685
 686         if (V4L2_MEMORY_MMAP != vout->memory)
 687                 return 0;
 688
 689         /* Now allocated the V4L2 buffers */
 690         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
 691         startindex = (vout->vid == OMAP_VIDEO1) ?
 692                 video1_numbuffers : video2_numbuffers;
 693
 694         /* Check the size of the buffer */
 695         if (*size > vout->buffer_size) {
 696                 v4l2_err(&vout->vid_dev->v4l2_dev,
 697                                 "buffer allocation mismatch [%u] [%u]\n",
 698                                 *size, vout->buffer_size);
 699                 return -ENOMEM;
 700         }
 701
 702         for (i = startindex; i < *count; i++) {
 703                 vout->buffer_size = *size;
 704
 705                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
 706                                 &phy_addr);
 707                 if (!virt_addr) {
 708                         if (ovid->rotation_type == VOUT_ROT_NONE) {
 709                                 break;
 710                         } else {
 711                                 if (!is_rotation_enabled(vout))
 712                                         break;
 713                         /* Free the VRFB buffers if no space for V4L2 buffers */
 714                         for (j = i; j < *count; j++) {
 715                                 omap_vout_free_buffer(
 716                                                 vout->smsshado_virt_addr[j],
 717                                                 vout->smsshado_size);
 718                                 vout->smsshado_virt_addr[j] = 0;
 719                                 vout->smsshado_phy_addr[j] = 0;
 720                                 }
 721                         }
 722                 }
 723                 vout->buf_virt_addr[i] = virt_addr;
 724                 vout->buf_phy_addr[i] = phy_addr;
 725         }
 726         *count = vout->buffer_allocated = i;
 727
 728         return 0;
 729 }
 730
 731 /*
 732  * Free the V4L2 buffers additionally allocated than default
 733  * number of buffers
 734  */
 735 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
 736 {
 737         int num_buffers = 0, i;
 738
 739         num_buffers = (vout->vid == OMAP_VIDEO1) ?
 740                 video1_numbuffers : video2_numbuffers;
 741
 742         for (i = num_buffers; i < vout->buffer_allocated; i++) {
 743                 if (vout->buf_virt_addr[i])
 744                         omap_vout_free_buffer(vout->buf_virt_addr[i],
 745                                         vout->buffer_size);
 746
 747                 vout->buf_virt_addr[i] = 0;
 748                 vout->buf_phy_addr[i] = 0;
 749         }
 750         vout->buffer_allocated = num_buffers;
 751 }
 752
 753 /*
 754  * This function will be called when VIDIOC_QBUF ioctl is called.
 755  * It prepare buffers before give out for the display. This function
 756  * converts user space virtual address into physical address if userptr memory
 757  * exchange mechanism is used. If rotation is enabled, it copies entire
 758  * buffer into VRFB memory space before giving it to the DSS.
 759  */
 760 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
 761                         struct videobuf_buffer *vb,
 762                         enum v4l2_field field)
 763 {
 764         struct omap_vout_device *vout = q->priv_data;
 765         struct omapvideo_info *ovid = &vout->vid_info;
 766
 767         if (VIDEOBUF_NEEDS_INIT == vb->state) {
 768                 vb->width = vout->pix.width;
 769                 vb->height = vout->pix.height;
 770                 vb->size = vb->width * vb->height * vout->bpp;
 771                 vb->field = field;
 772         }
 773         vb->state = VIDEOBUF_PREPARED;
 774         /* if user pointer memory mechanism is used, get the physical
 775          * address of the buffer
 776          */
 777         if (V4L2_MEMORY_USERPTR == vb->memory) {
 778                 if (0 == vb->baddr)
 779                         return -EINVAL;
 780                 /* Physical address */
 781                 vout->queued_buf_addr[vb->i] = (u8 *)
 782                         omap_vout_uservirt_to_phys(vb->baddr);
 783         } else {
 784                 u32 addr, dma_addr;
 785                 unsigned long size;
 786
 787                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
 788                 size = (unsigned long) vb->size;
 789
 790                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
 791                                 size, DMA_TO_DEVICE);
 792                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
 793                         v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
 794
 795                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
 796         }
 797
 798         if (ovid->rotation_type == VOUT_ROT_VRFB)
 799                 return omap_vout_prepare_vrfb(vout, vb);
 800         else
 801                 return 0;
 802 }
 803
 804 /*
 805  * Buffer queue function will be called from the videobuf layer when _QBUF
 806  * ioctl is called. It is used to enqueue buffer, which is ready to be
 807  * displayed.
 808  */
 809 static void omap_vout_buffer_queue(struct videobuf_queue *q,
 810                           struct videobuf_buffer *vb)
 811 {
 812         struct omap_vout_device *vout = q->priv_data;
 813
 814         /* Driver is also maintainig a queue. So enqueue buffer in the driver
 815          * queue */
 816         list_add_tail(&vb->queue, &vout->dma_queue);
 817
 818         vb->state = VIDEOBUF_QUEUED;
 819 }
 820
 821 /*
 822  * Buffer release function is called from videobuf layer to release buffer
 823  * which are already allocated
 824  */
 825 static void omap_vout_buffer_release(struct videobuf_queue *q,
 826                             struct videobuf_buffer *vb)
 827 {
 828         struct omap_vout_device *vout = q->priv_data;
 829
 830         vb->state = VIDEOBUF_NEEDS_INIT;
 831
 832         if (V4L2_MEMORY_MMAP != vout->memory)
 833                 return;
 834 }
 835
 836 /*
 837  *  File operations
 838  */
 839 static unsigned int omap_vout_poll(struct file *file,
 840                                    struct poll_table_struct *wait)
 841 {
 842         struct omap_vout_device *vout = file->private_data;
 843         struct videobuf_queue *q = &vout->vbq;
 844
 845         return videobuf_poll_stream(file, q, wait);
 846 }
 847
 848 static void omap_vout_vm_open(struct vm_area_struct *vma)
 849 {
 850         struct omap_vout_device *vout = vma->vm_private_data;
 851
 852         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 853                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 854         vout->mmap_count++;
 855 }
 856
 857 static void omap_vout_vm_close(struct vm_area_struct *vma)
 858 {
 859         struct omap_vout_device *vout = vma->vm_private_data;
 860
 861         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 862                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 863         vout->mmap_count--;
 864 }
 865
 866 static struct vm_operations_struct omap_vout_vm_ops = {
 867         .open   = omap_vout_vm_open,
 868         .close  = omap_vout_vm_close,
 869 };
 870
 871 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
 872 {
 873         int i;
 874         void *pos;
 875         unsigned long start = vma->vm_start;
 876         unsigned long size = (vma->vm_end - vma->vm_start);
 877         struct omap_vout_device *vout = file->private_data;
 878         struct videobuf_queue *q = &vout->vbq;
 879
 880         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 881                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
 882                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
 883
 884         /* look for the buffer to map */
 885         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
 886                 if (NULL == q->bufs[i])
 887                         continue;
 888                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
 889                         continue;
 890                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
 891                         break;
 892         }
 893
 894         if (VIDEO_MAX_FRAME == i) {
 895                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 896                                 "offset invalid [offset=0x%lx]\n",
 897                                 (vma->vm_pgoff << PAGE_SHIFT));
 898                 return -EINVAL;
 899         }
 900         /* Check the size of the buffer */
 901         if (size > vout->buffer_size) {
 902                 v4l2_err(&vout->vid_dev->v4l2_dev,
 903                                 "insufficient memory [%lu] [%u]\n",
 904                                 size, vout->buffer_size);
 905                 return -ENOMEM;
 906         }
 907
 908         q->bufs[i]->baddr = vma->vm_start;
 909
 910         vma->vm_flags |= VM_RESERVED;
 911         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 912         vma->vm_ops = &omap_vout_vm_ops;
 913         vma->vm_private_data = (void *) vout;
 914         pos = (void *)vout->buf_virt_addr[i];
 915         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
 916         while (size > 0) {
 917                 unsigned long pfn;
 918                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
 919                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
 920                         return -EAGAIN;
 921                 start += PAGE_SIZE;
 922                 pos += PAGE_SIZE;
 923                 size -= PAGE_SIZE;
 924         }
 925         vout->mmap_count++;
 926         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 927
 928         return 0;
 929 }
 930
 931 static int omap_vout_release(struct file *file)
 932 {
 933         unsigned int ret, i;
 934         struct videobuf_queue *q;
 935         struct omapvideo_info *ovid;
 936         struct omap_vout_device *vout = file->private_data;
 937
 938         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
 939         ovid = &vout->vid_info;
 940
 941         if (!vout)
 942                 return 0;
 943
 944         q = &vout->vbq;
 945         /* Disable all the overlay managers connected with this interface */
 946         for (i = 0; i < ovid->num_overlays; i++) {
 947                 struct omap_overlay *ovl = ovid->overlays[i];
 948                 if (ovl->manager && ovl->manager->device) {
 949                         struct omap_overlay_info info;
 950                         ovl->get_overlay_info(ovl, &info);
 951                         info.enabled = 0;
 952                         ovl->set_overlay_info(ovl, &info);
 953                 }
 954         }
 955         /* Turn off the pipeline */
 956         ret = omapvid_apply_changes(vout);
 957         if (ret)
 958                 v4l2_warn(&vout->vid_dev->v4l2_dev,
 959                                 "Unable to apply changes\n");
 960
 961         /* Free all buffers */
 962         omap_vout_free_extra_buffers(vout);
 963
 964         /* Free the VRFB buffers only if they are allocated
 965          * during reqbufs.  Don't free if init time allocated
 966          */
 967         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 968                 if (!vout->vrfb_static_allocation)
 969                         omap_vout_free_vrfb_buffers(vout);
 970         }
 971         videobuf_mmap_free(q);
 972
 973         /* Even if apply changes fails we should continue
 974            freeing allocated memory */
 975         if (vout->streaming) {
 976                 u32 mask = 0;
 977
 978                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
 979                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
 980                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
 981                 vout->streaming = 0;
 982
 983                 videobuf_streamoff(q);
 984                 videobuf_queue_cancel(q);
 985         }
 986
 987         if (vout->mmap_count != 0)
 988                 vout->mmap_count = 0;
 989
 990         vout->opened -= 1;
 991         file->private_data = NULL;
 992
 993         if (vout->buffer_allocated)
 994                 videobuf_mmap_free(q);
 995
 996         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 997         return ret;
 998 }
 999
1000 static int omap_vout_open(struct file *file)
1001 {
1002         struct videobuf_queue *q;
1003         struct omap_vout_device *vout = NULL;
1004
1005         vout = video_drvdata(file);
1006         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1007
1008         if (vout == NULL)
1009                 return -ENODEV;
1010
1011         /* for now, we only support single open */
1012         if (vout->opened)
1013                 return -EBUSY;
1014
1015         vout->opened += 1;
1016
1017         file->private_data = vout;
1018         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1019
1020         q = &vout->vbq;
1021         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1022         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1023         video_vbq_ops.buf_release = omap_vout_buffer_release;
1024         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1025         spin_lock_init(&vout->vbq_lock);
1026
1027         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1028                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1029                         sizeof(struct videobuf_buffer), vout, NULL);
1030
1031         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1032         return 0;
1033 }
1034
1035 /*
1036  * V4L2 ioctls
1037  */
1038 static int vidioc_querycap(struct file *file, void *fh,
1039                 struct v4l2_capability *cap)
1040 {
1041         struct omap_vout_device *vout = fh;
1042
1043         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1044         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1045         cap->bus_info[0] = '\0';
1046         cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT;
1047
1048         return 0;
1049 }
1050
1051 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1052                         struct v4l2_fmtdesc *fmt)
1053 {
1054         int index = fmt->index;
1055
1056         if (index >= NUM_OUTPUT_FORMATS)
1057                 return -EINVAL;
1058
1059         fmt->flags = omap_formats[index].flags;
1060         strlcpy(fmt->description, omap_formats[index].description,
1061                         sizeof(fmt->description));
1062         fmt->pixelformat = omap_formats[index].pixelformat;
1063
1064         return 0;
1065 }
1066
1067 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1068                         struct v4l2_format *f)
1069 {
1070         struct omap_vout_device *vout = fh;
1071
1072         f->fmt.pix = vout->pix;
1073         return 0;
1074
1075 }
1076
1077 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1078                         struct v4l2_format *f)
1079 {
1080         struct omap_overlay *ovl;
1081         struct omapvideo_info *ovid;
1082         struct omap_video_timings *timing;
1083         struct omap_vout_device *vout = fh;
1084
1085         ovid = &vout->vid_info;
1086         ovl = ovid->overlays[0];
1087
1088         if (!ovl->manager || !ovl->manager->device)
1089                 return -EINVAL;
1090         /* get the display device attached to the overlay */
1091         timing = &ovl->manager->device->panel.timings;
1092
1093         vout->fbuf.fmt.height = timing->y_res;
1094         vout->fbuf.fmt.width = timing->x_res;
1095
1096         omap_vout_try_format(&f->fmt.pix);
1097         return 0;
1098 }
1099
1100 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1101                         struct v4l2_format *f)
1102 {
1103         int ret, bpp;
1104         struct omap_overlay *ovl;
1105         struct omapvideo_info *ovid;
1106         struct omap_video_timings *timing;
1107         struct omap_vout_device *vout = fh;
1108
1109         if (vout->streaming)
1110                 return -EBUSY;
1111
1112         mutex_lock(&vout->lock);
1113
1114         ovid = &vout->vid_info;
1115         ovl = ovid->overlays[0];
1116
1117         /* get the display device attached to the overlay */
1118         if (!ovl->manager || !ovl->manager->device) {
1119                 ret = -EINVAL;
1120                 goto s_fmt_vid_out_exit;
1121         }
1122         timing = &ovl->manager->device->panel.timings;
1123
1124         /* We dont support RGB24-packed mode if vrfb rotation
1125          * is enabled*/
1126         if ((is_rotation_enabled(vout)) &&
1127                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1128                 ret = -EINVAL;
1129                 goto s_fmt_vid_out_exit;
1130         }
1131
1132         /* get the framebuffer parameters */
1133
1134         if (is_rotation_90_or_270(vout)) {
1135                 vout->fbuf.fmt.height = timing->x_res;
1136                 vout->fbuf.fmt.width = timing->y_res;
1137         } else {
1138                 vout->fbuf.fmt.height = timing->y_res;
1139                 vout->fbuf.fmt.width = timing->x_res;
1140         }
1141
1142         /* change to samller size is OK */
1143
1144         bpp = omap_vout_try_format(&f->fmt.pix);
1145         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1146
1147         /* try & set the new output format */
1148         vout->bpp = bpp;
1149         vout->pix = f->fmt.pix;
1150         vout->vrfb_bpp = 1;
1151
1152         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1153         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1154                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1155                 vout->vrfb_bpp = 2;
1156
1157         /* set default crop and win */
1158         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1159
1160         /* Save the changes in the overlay strcuture */
1161         ret = omapvid_init(vout, 0);
1162         if (ret) {
1163                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1164                 goto s_fmt_vid_out_exit;
1165         }
1166
1167         ret = 0;
1168
1169 s_fmt_vid_out_exit:
1170         mutex_unlock(&vout->lock);
1171         return ret;
1172 }
1173
1174 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1175                         struct v4l2_format *f)
1176 {
1177         int ret = 0;
1178         struct omap_vout_device *vout = fh;
1179         struct omap_overlay *ovl;
1180         struct omapvideo_info *ovid;
1181         struct v4l2_window *win = &f->fmt.win;
1182
1183         ovid = &vout->vid_info;
1184         ovl = ovid->overlays[0];
1185
1186         ret = omap_vout_try_window(&vout->fbuf, win);
1187
1188         if (!ret) {
1189                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1190                         win->global_alpha = 255;
1191                 else
1192                         win->global_alpha = f->fmt.win.global_alpha;
1193         }
1194
1195         return ret;
1196 }
1197
1198 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1199                         struct v4l2_format *f)
1200 {
1201         int ret = 0;
1202         struct omap_overlay *ovl;
1203         struct omapvideo_info *ovid;
1204         struct omap_vout_device *vout = fh;
1205         struct v4l2_window *win = &f->fmt.win;
1206
1207         mutex_lock(&vout->lock);
1208         ovid = &vout->vid_info;
1209         ovl = ovid->overlays[0];
1210
1211         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1212         if (!ret) {
1213                 /* Video1 plane does not support global alpha on OMAP3 */
1214                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1215                         vout->win.global_alpha = 255;
1216                 else
1217                         vout->win.global_alpha = f->fmt.win.global_alpha;
1218
1219                 vout->win.chromakey = f->fmt.win.chromakey;
1220         }
1221         mutex_unlock(&vout->lock);
1222         return ret;
1223 }
1224
1225 static int vidioc_enum_fmt_vid_overlay(struct file *file, void *fh,
1226                         struct v4l2_fmtdesc *fmt)
1227 {
1228         int index = fmt->index;
1229
1230         if (index >= NUM_OUTPUT_FORMATS)
1231                 return -EINVAL;
1232
1233         fmt->flags = omap_formats[index].flags;
1234         strlcpy(fmt->description, omap_formats[index].description,
1235                         sizeof(fmt->description));
1236         fmt->pixelformat = omap_formats[index].pixelformat;
1237         return 0;
1238 }
1239
1240 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1241                         struct v4l2_format *f)
1242 {
1243         u32 key_value =  0;
1244         struct omap_overlay *ovl;
1245         struct omapvideo_info *ovid;
1246         struct omap_vout_device *vout = fh;
1247         struct omap_overlay_manager_info info;
1248         struct v4l2_window *win = &f->fmt.win;
1249
1250         ovid = &vout->vid_info;
1251         ovl = ovid->overlays[0];
1252
1253         win->w = vout->win.w;
1254         win->field = vout->win.field;
1255         win->global_alpha = vout->win.global_alpha;
1256
1257         if (ovl->manager && ovl->manager->get_manager_info) {
1258                 ovl->manager->get_manager_info(ovl->manager, &info);
1259                 key_value = info.trans_key;
1260         }
1261         win->chromakey = key_value;
1262         return 0;
1263 }
1264
1265 static int vidioc_cropcap(struct file *file, void *fh,
1266                 struct v4l2_cropcap *cropcap)
1267 {
1268         struct omap_vout_device *vout = fh;
1269         struct v4l2_pix_format *pix = &vout->pix;
1270
1271         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1272                 return -EINVAL;
1273
1274         /* Width and height are always even */
1275         cropcap->bounds.width = pix->width & ~1;
1276         cropcap->bounds.height = pix->height & ~1;
1277
1278         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1279         cropcap->pixelaspect.numerator = 1;
1280         cropcap->pixelaspect.denominator = 1;
1281         return 0;
1282 }
1283
1284 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1285 {
1286         struct omap_vout_device *vout = fh;
1287
1288         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1289                 return -EINVAL;
1290         crop->c = vout->crop;
1291         return 0;
1292 }
1293
1294 static int vidioc_s_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1295 {
1296         int ret = -EINVAL;
1297         struct omap_vout_device *vout = fh;
1298         struct omapvideo_info *ovid;
1299         struct omap_overlay *ovl;
1300         struct omap_video_timings *timing;
1301
1302         if (vout->streaming)
1303                 return -EBUSY;
1304
1305         mutex_lock(&vout->lock);
1306         ovid = &vout->vid_info;
1307         ovl = ovid->overlays[0];
1308
1309         if (!ovl->manager || !ovl->manager->device) {
1310                 ret = -EINVAL;
1311                 goto s_crop_err;
1312         }
1313         /* get the display device attached to the overlay */
1314         timing = &ovl->manager->device->panel.timings;
1315
1316         if (is_rotation_90_or_270(vout)) {
1317                 vout->fbuf.fmt.height = timing->x_res;
1318                 vout->fbuf.fmt.width = timing->y_res;
1319         } else {
1320                 vout->fbuf.fmt.height = timing->y_res;
1321                 vout->fbuf.fmt.width = timing->x_res;
1322         }
1323
1324         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1325                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1326                                 &vout->fbuf, &crop->c);
1327
1328 s_crop_err:
1329         mutex_unlock(&vout->lock);
1330         return ret;
1331 }
1332
1333 static int vidioc_queryctrl(struct file *file, void *fh,
1334                 struct v4l2_queryctrl *ctrl)
1335 {
1336         int ret = 0;
1337
1338         switch (ctrl->id) {
1339         case V4L2_CID_ROTATE:
1340                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1341                 break;
1342         case V4L2_CID_BG_COLOR:
1343                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1344                 break;
1345         case V4L2_CID_VFLIP:
1346                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1347                 break;
1348         default:
1349                 ctrl->name[0] = '\0';
1350                 ret = -EINVAL;
1351         }
1352         return ret;
1353 }
1354
1355 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1356 {
1357         int ret = 0;
1358         struct omap_vout_device *vout = fh;
1359
1360         switch (ctrl->id) {
1361         case V4L2_CID_ROTATE:
1362                 ctrl->value = vout->control[0].value;
1363                 break;
1364         case V4L2_CID_BG_COLOR:
1365         {
1366                 struct omap_overlay_manager_info info;
1367                 struct omap_overlay *ovl;
1368
1369                 ovl = vout->vid_info.overlays[0];
1370                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1371                         ret = -EINVAL;
1372                         break;
1373                 }
1374
1375                 ovl->manager->get_manager_info(ovl->manager, &info);
1376                 ctrl->value = info.default_color;
1377                 break;
1378         }
1379         case V4L2_CID_VFLIP:
1380                 ctrl->value = vout->control[2].value;
1381                 break;
1382         default:
1383                 ret = -EINVAL;
1384         }
1385         return ret;
1386 }
1387
1388 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1389 {
1390         int ret = 0;
1391         struct omap_vout_device *vout = fh;
1392
1393         switch (a->id) {
1394         case V4L2_CID_ROTATE:
1395         {
1396                 struct omapvideo_info *ovid;
1397                 int rotation = a->value;
1398
1399                 ovid = &vout->vid_info;
1400
1401                 mutex_lock(&vout->lock);
1402                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1403                         mutex_unlock(&vout->lock);
1404                         ret = -ERANGE;
1405                         break;
1406                 }
1407
1408                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1409                         mutex_unlock(&vout->lock);
1410                         ret = -EINVAL;
1411                         break;
1412                 }
1413
1414                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1415                                                         vout->mirror)) {
1416                         mutex_unlock(&vout->lock);
1417                         ret = -EINVAL;
1418                         break;
1419                 }
1420
1421                 vout->control[0].value = rotation;
1422                 mutex_unlock(&vout->lock);
1423                 break;
1424         }
1425         case V4L2_CID_BG_COLOR:
1426         {
1427                 struct omap_overlay *ovl;
1428                 unsigned int  color = a->value;
1429                 struct omap_overlay_manager_info info;
1430
1431                 ovl = vout->vid_info.overlays[0];
1432
1433                 mutex_lock(&vout->lock);
1434                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1435                         mutex_unlock(&vout->lock);
1436                         ret = -EINVAL;
1437                         break;
1438                 }
1439
1440                 ovl->manager->get_manager_info(ovl->manager, &info);
1441                 info.default_color = color;
1442                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1443                         mutex_unlock(&vout->lock);
1444                         ret = -EINVAL;
1445                         break;
1446                 }
1447
1448                 vout->control[1].value = color;
1449                 mutex_unlock(&vout->lock);
1450                 break;
1451         }
1452         case V4L2_CID_VFLIP:
1453         {
1454                 struct omap_overlay *ovl;
1455                 struct omapvideo_info *ovid;
1456                 unsigned int  mirror = a->value;
1457
1458                 ovid = &vout->vid_info;
1459                 ovl = ovid->overlays[0];
1460
1461                 mutex_lock(&vout->lock);
1462                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1463                         mutex_unlock(&vout->lock);
1464                         ret = -ERANGE;
1465                         break;
1466                 }
1467
1468                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1469                         mutex_unlock(&vout->lock);
1470                         ret = -EINVAL;
1471                         break;
1472                 }
1473                 vout->mirror = mirror;
1474                 vout->control[2].value = mirror;
1475                 mutex_unlock(&vout->lock);
1476                 break;
1477         }
1478         default:
1479                 ret = -EINVAL;
1480         }
1481         return ret;
1482 }
1483
1484 static int vidioc_reqbufs(struct file *file, void *fh,
1485                         struct v4l2_requestbuffers *req)
1486 {
1487         int ret = 0;
1488         unsigned int i, num_buffers = 0;
1489         struct omap_vout_device *vout = fh;
1490         struct videobuf_queue *q = &vout->vbq;
1491
1492         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1493                 return -EINVAL;
1494         /* if memory is not mmp or userptr
1495            return error */
1496         if ((V4L2_MEMORY_MMAP != req->memory) &&
1497                         (V4L2_MEMORY_USERPTR != req->memory))
1498                 return -EINVAL;
1499
1500         mutex_lock(&vout->lock);
1501         /* Cannot be requested when streaming is on */
1502         if (vout->streaming) {
1503                 ret = -EBUSY;
1504                 goto reqbuf_err;
1505         }
1506
1507         /* If buffers are already allocated free them */
1508         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1509                 if (vout->mmap_count) {
1510                         ret = -EBUSY;
1511                         goto reqbuf_err;
1512                 }
1513                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1514                         video1_numbuffers : video2_numbuffers;
1515                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1516                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1517                                         vout->buffer_size);
1518                         vout->buf_virt_addr[i] = 0;
1519                         vout->buf_phy_addr[i] = 0;
1520                 }
1521                 vout->buffer_allocated = num_buffers;
1522                 videobuf_mmap_free(q);
1523         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1524                 if (vout->buffer_allocated) {
1525                         videobuf_mmap_free(q);
1526                         for (i = 0; i < vout->buffer_allocated; i++) {
1527                                 kfree(q->bufs[i]);
1528                                 q->bufs[i] = NULL;
1529                         }
1530                         vout->buffer_allocated = 0;
1531                 }
1532         }
1533
1534         /*store the memory type in data structure */
1535         vout->memory = req->memory;
1536
1537         INIT_LIST_HEAD(&vout->dma_queue);
1538
1539         /* call videobuf_reqbufs api */
1540         ret = videobuf_reqbufs(q, req);
1541         if (ret < 0)
1542                 goto reqbuf_err;
1543
1544         vout->buffer_allocated = req->count;
1545
1546 reqbuf_err:
1547         mutex_unlock(&vout->lock);
1548         return ret;
1549 }
1550
1551 static int vidioc_querybuf(struct file *file, void *fh,
1552                         struct v4l2_buffer *b)
1553 {
1554         struct omap_vout_device *vout = fh;
1555
1556         return videobuf_querybuf(&vout->vbq, b);
1557 }
1558
1559 static int vidioc_qbuf(struct file *file, void *fh,
1560                         struct v4l2_buffer *buffer)
1561 {
1562         struct omap_vout_device *vout = fh;
1563         struct videobuf_queue *q = &vout->vbq;
1564
1565         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1566                         (buffer->index >= vout->buffer_allocated) ||
1567                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1568                 return -EINVAL;
1569         }
1570         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1571                 if ((buffer->length < vout->pix.sizeimage) ||
1572                                 (0 == buffer->m.userptr)) {
1573                         return -EINVAL;
1574                 }
1575         }
1576
1577         if ((is_rotation_enabled(vout)) &&
1578                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1579                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1580                                 "DMA Channel not allocated for Rotation\n");
1581                 return -EINVAL;
1582         }
1583
1584         return videobuf_qbuf(q, buffer);
1585 }
1586
1587 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1588 {
1589         struct omap_vout_device *vout = fh;
1590         struct videobuf_queue *q = &vout->vbq;
1591
1592         int ret;
1593         u32 addr;
1594         unsigned long size;
1595         struct videobuf_buffer *vb;
1596
1597         vb = q->bufs[b->index];
1598
1599         if (!vout->streaming)
1600                 return -EINVAL;
1601
1602         if (file->f_flags & O_NONBLOCK)
1603                 /* Call videobuf_dqbuf for non blocking mode */
1604                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1605         else
1606                 /* Call videobuf_dqbuf for  blocking mode */
1607                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1608
1609         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1610         size = (unsigned long) vb->size;
1611         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1612                                 size, DMA_TO_DEVICE);
1613         return ret;
1614 }
1615
1616 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1617 {
1618         int ret = 0, j;
1619         u32 addr = 0, mask = 0;
1620         struct omap_vout_device *vout = fh;
1621         struct videobuf_queue *q = &vout->vbq;
1622         struct omapvideo_info *ovid = &vout->vid_info;
1623
1624         mutex_lock(&vout->lock);
1625
1626         if (vout->streaming) {
1627                 ret = -EBUSY;
1628                 goto streamon_err;
1629         }
1630
1631         ret = videobuf_streamon(q);
1632         if (ret)
1633                 goto streamon_err;
1634
1635         if (list_empty(&vout->dma_queue)) {
1636                 ret = -EIO;
1637                 goto streamon_err1;
1638         }
1639
1640         /* Get the next frame from the buffer queue */
1641         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1642                         struct videobuf_buffer, queue);
1643         /* Remove buffer from the buffer queue */
1644         list_del(&vout->cur_frm->queue);
1645         /* Mark state of the current frame to active */
1646         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1647         /* Initialize field_id and started member */
1648         vout->field_id = 0;
1649
1650         /* set flag here. Next QBUF will start DMA */
1651         vout->streaming = 1;
1652
1653         vout->first_int = 1;
1654
1655         if (omap_vout_calculate_offset(vout)) {
1656                 ret = -EINVAL;
1657                 goto streamon_err1;
1658         }
1659         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1660                 + vout->cropped_offset;
1661
1662         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1663                 | DISPC_IRQ_VSYNC2;
1664
1665         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1666
1667         for (j = 0; j < ovid->num_overlays; j++) {
1668                 struct omap_overlay *ovl = ovid->overlays[j];
1669
1670                 if (ovl->manager && ovl->manager->device) {
1671                         struct omap_overlay_info info;
1672                         ovl->get_overlay_info(ovl, &info);
1673                         info.enabled = 1;
1674                         info.paddr = addr;
1675                         if (ovl->set_overlay_info(ovl, &info)) {
1676                                 ret = -EINVAL;
1677                                 goto streamon_err1;
1678                         }
1679                 }
1680         }
1681
1682         /* First save the configuration in ovelray structure */
1683         ret = omapvid_init(vout, addr);
1684         if (ret)
1685                 v4l2_err(&vout->vid_dev->v4l2_dev,
1686                                 "failed to set overlay info\n");
1687         /* Enable the pipeline and set the Go bit */
1688         ret = omapvid_apply_changes(vout);
1689         if (ret)
1690                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1691
1692         ret = 0;
1693
1694 streamon_err1:
1695         if (ret)
1696                 ret = videobuf_streamoff(q);
1697 streamon_err:
1698         mutex_unlock(&vout->lock);
1699         return ret;
1700 }
1701
1702 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1703 {
1704         u32 mask = 0;
1705         int ret = 0, j;
1706         struct omap_vout_device *vout = fh;
1707         struct omapvideo_info *ovid = &vout->vid_info;
1708
1709         if (!vout->streaming)
1710                 return -EINVAL;
1711
1712         vout->streaming = 0;
1713         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1714                 | DISPC_IRQ_VSYNC2;
1715
1716         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1717
1718         for (j = 0; j < ovid->num_overlays; j++) {
1719                 struct omap_overlay *ovl = ovid->overlays[j];
1720
1721                 if (ovl->manager && ovl->manager->device) {
1722                         struct omap_overlay_info info;
1723
1724                         ovl->get_overlay_info(ovl, &info);
1725                         info.enabled = 0;
1726                         ret = ovl->set_overlay_info(ovl, &info);
1727                         if (ret)
1728                                 v4l2_err(&vout->vid_dev->v4l2_dev,
1729                                 "failed to update overlay info in streamoff\n");
1730                 }
1731         }
1732
1733         /* Turn of the pipeline */
1734         ret = omapvid_apply_changes(vout);
1735         if (ret)
1736                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1737                                 " streamoff\n");
1738
1739         INIT_LIST_HEAD(&vout->dma_queue);
1740         ret = videobuf_streamoff(&vout->vbq);
1741
1742         return ret;
1743 }
1744
1745 static int vidioc_s_fbuf(struct file *file, void *fh,
1746                                 struct v4l2_framebuffer *a)
1747 {
1748         int enable = 0;
1749         struct omap_overlay *ovl;
1750         struct omapvideo_info *ovid;
1751         struct omap_vout_device *vout = fh;
1752         struct omap_overlay_manager_info info;
1753         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1754
1755         ovid = &vout->vid_info;
1756         ovl = ovid->overlays[0];
1757
1758         /* OMAP DSS doesn't support Source and Destination color
1759            key together */
1760         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1761                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1762                 return -EINVAL;
1763         /* OMAP DSS Doesn't support the Destination color key
1764            and alpha blending together */
1765         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1766                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1767                 return -EINVAL;
1768
1769         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1770                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1771                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1772         } else
1773                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1774
1775         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1776                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1777                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1778         } else
1779                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1780
1781         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1782                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1783                 enable = 1;
1784         else
1785                 enable = 0;
1786         if (ovl->manager && ovl->manager->get_manager_info &&
1787                         ovl->manager->set_manager_info) {
1788
1789                 ovl->manager->get_manager_info(ovl->manager, &info);
1790                 info.trans_enabled = enable;
1791                 info.trans_key_type = key_type;
1792                 info.trans_key = vout->win.chromakey;
1793
1794                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1795                         return -EINVAL;
1796         }
1797         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1798                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1799                 enable = 1;
1800         } else {
1801                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1802                 enable = 0;
1803         }
1804         if (ovl->manager && ovl->manager->get_manager_info &&
1805                         ovl->manager->set_manager_info) {
1806                 ovl->manager->get_manager_info(ovl->manager, &info);
1807                 /* enable this only if there is no zorder cap */
1808                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1809                         info.partial_alpha_enabled = enable;
1810                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1811                         return -EINVAL;
1812         }
1813
1814         return 0;
1815 }
1816
1817 static int vidioc_g_fbuf(struct file *file, void *fh,
1818                 struct v4l2_framebuffer *a)
1819 {
1820         struct omap_overlay *ovl;
1821         struct omapvideo_info *ovid;
1822         struct omap_vout_device *vout = fh;
1823         struct omap_overlay_manager_info info;
1824
1825         ovid = &vout->vid_info;
1826         ovl = ovid->overlays[0];
1827
1828         a->flags = 0x0;
1829         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1830                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1831
1832         if (ovl->manager && ovl->manager->get_manager_info) {
1833                 ovl->manager->get_manager_info(ovl->manager, &info);
1834                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1835                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1836                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1837                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1838         }
1839         if (ovl->manager && ovl->manager->get_manager_info) {
1840                 ovl->manager->get_manager_info(ovl->manager, &info);
1841                 if (info.partial_alpha_enabled)
1842                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1843         }
1844
1845         return 0;
1846 }
1847
1848 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1849         .vidioc_querycap                        = vidioc_querycap,
1850         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1851         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1852         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1853         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1854         .vidioc_queryctrl                       = vidioc_queryctrl,
1855         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1856         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1857         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1858         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1859         .vidioc_try_fmt_vid_overlay             = vidioc_try_fmt_vid_overlay,
1860         .vidioc_s_fmt_vid_overlay               = vidioc_s_fmt_vid_overlay,
1861         .vidioc_enum_fmt_vid_overlay            = vidioc_enum_fmt_vid_overlay,
1862         .vidioc_g_fmt_vid_overlay               = vidioc_g_fmt_vid_overlay,
1863         .vidioc_cropcap                         = vidioc_cropcap,
1864         .vidioc_g_crop                          = vidioc_g_crop,
1865         .vidioc_s_crop                          = vidioc_s_crop,
1866         .vidioc_reqbufs                         = vidioc_reqbufs,
1867         .vidioc_querybuf                        = vidioc_querybuf,
1868         .vidioc_qbuf                            = vidioc_qbuf,
1869         .vidioc_dqbuf                           = vidioc_dqbuf,
1870         .vidioc_streamon                        = vidioc_streamon,
1871         .vidioc_streamoff                       = vidioc_streamoff,
1872 };
1873
1874 static const struct v4l2_file_operations omap_vout_fops = {
1875         .owner          = THIS_MODULE,
1876         .poll           = omap_vout_poll,
1877         .unlocked_ioctl = video_ioctl2,
1878         .mmap           = omap_vout_mmap,
1879         .open           = omap_vout_open,
1880         .release        = omap_vout_release,
1881 };
1882
1883 /* Init functions used during driver initialization */
1884 /* Initial setup of video_data */
1885 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1886 {
1887         struct video_device *vfd;
1888         struct v4l2_pix_format *pix;
1889         struct v4l2_control *control;
1890         struct omap_dss_device *display =
1891                 vout->vid_info.overlays[0]->manager->device;
1892
1893         /* set the default pix */
1894         pix = &vout->pix;
1895
1896         /* Set the default picture of QVGA  */
1897         pix->width = QQVGA_WIDTH;
1898         pix->height = QQVGA_HEIGHT;
1899
1900         /* Default pixel format is RGB 5-6-5 */
1901         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1902         pix->field = V4L2_FIELD_ANY;
1903         pix->bytesperline = pix->width * 2;
1904         pix->sizeimage = pix->bytesperline * pix->height;
1905         pix->priv = 0;
1906         pix->colorspace = V4L2_COLORSPACE_JPEG;
1907
1908         vout->bpp = RGB565_BPP;
1909         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1910         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1911
1912         /* Set the data structures for the overlay parameters*/
1913         vout->win.global_alpha = 255;
1914         vout->fbuf.flags = 0;
1915         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1916                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1917         vout->win.chromakey = 0;
1918
1919         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1920
1921         /*Initialize the control variables for
1922           rotation, flipping and background color. */
1923         control = vout->control;
1924         control[0].id = V4L2_CID_ROTATE;
1925         control[0].value = 0;
1926         vout->rotation = 0;
1927         vout->mirror = 0;
1928         vout->control[2].id = V4L2_CID_HFLIP;
1929         vout->control[2].value = 0;
1930         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1931                 vout->vrfb_bpp = 2;
1932
1933         control[1].id = V4L2_CID_BG_COLOR;
1934         control[1].value = 0;
1935
1936         /* initialize the video_device struct */
1937         vfd = vout->vfd = video_device_alloc();
1938
1939         if (!vfd) {
1940                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1941                                 " video device struct\n");
1942                 return -ENOMEM;
1943         }
1944         vfd->release = video_device_release;
1945         vfd->ioctl_ops = &vout_ioctl_ops;
1946
1947         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1948
1949         vfd->fops = &omap_vout_fops;
1950         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1951         mutex_init(&vout->lock);
1952
1953         vfd->minor = -1;
1954         return 0;
1955
1956 }
1957
1958 /* Setup video buffers */
1959 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1960                 int vid_num)
1961 {
1962         u32 numbuffers;
1963         int ret = 0, i;
1964         struct omapvideo_info *ovid;
1965         struct omap_vout_device *vout;
1966         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1967         struct omap2video_device *vid_dev =
1968                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1969
1970         vout = vid_dev->vouts[vid_num];
1971         ovid = &vout->vid_info;
1972
1973         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1974         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1975         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1976
1977         for (i = 0; i < numbuffers; i++) {
1978                 vout->buf_virt_addr[i] =
1979                         omap_vout_alloc_buffer(vout->buffer_size,
1980                                         (u32 *) &vout->buf_phy_addr[i]);
1981                 if (!vout->buf_virt_addr[i]) {
1982                         numbuffers = i;
1983                         ret = -ENOMEM;
1984                         goto free_buffers;
1985                 }
1986         }
1987
1988         vout->cropped_offset = 0;
1989
1990         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1991                 int static_vrfb_allocation = (vid_num == 0) ?
1992                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1993                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1994                                 static_vrfb_allocation);
1995         }
1996
1997         return ret;
1998
1999 free_buffers:
2000         for (i = 0; i < numbuffers; i++) {
2001                 omap_vout_free_buffer(vout->buf_virt_addr[i],
2002                                                 vout->buffer_size);
2003                 vout->buf_virt_addr[i] = 0;
2004                 vout->buf_phy_addr[i] = 0;
2005         }
2006         return ret;
2007
2008 }
2009
2010 /* Create video out devices */
2011 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2012 {
2013         int ret = 0, k;
2014         struct omap_vout_device *vout;
2015         struct video_device *vfd = NULL;
2016         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2017         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2018                         struct omap2video_device, v4l2_dev);
2019
2020         for (k = 0; k < pdev->num_resources; k++) {
2021
2022                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2023                 if (!vout) {
2024                         dev_err(&pdev->dev, ": could not allocate memory\n");
2025                         return -ENOMEM;
2026                 }
2027
2028                 vout->vid = k;
2029                 vid_dev->vouts[k] = vout;
2030                 vout->vid_dev = vid_dev;
2031                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2032                 if (pdev->num_resources == 1)
2033                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2034                 else
2035                         /* Else select video1 and video2 one by one. */
2036                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2037                 vout->vid_info.num_overlays = 1;
2038                 vout->vid_info.id = k + 1;
2039
2040                 /* Set VRFB as rotation_type for omap2 and omap3 */
2041                 if (cpu_is_omap24xx() || cpu_is_omap34xx())
2042                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2043
2044                 /* Setup the default configuration for the video devices
2045                  */
2046                 if (omap_vout_setup_video_data(vout) != 0) {
2047                         ret = -ENOMEM;
2048                         goto error;
2049                 }
2050
2051                 /* Allocate default number of buffers for the video streaming
2052                  * and reserve the VRFB space for rotation
2053                  */
2054                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2055                         ret = -ENOMEM;
2056                         goto error1;
2057                 }
2058
2059                 /* Register the Video device with V4L2
2060                  */
2061                 vfd = vout->vfd;
2062                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2063                         dev_err(&pdev->dev, ": Could not register "
2064                                         "Video for Linux device\n");
2065                         vfd->minor = -1;
2066                         ret = -ENODEV;
2067                         goto error2;
2068                 }
2069                 video_set_drvdata(vfd, vout);
2070
2071                 /* Configure the overlay structure */
2072                 ret = omapvid_init(vid_dev->vouts[k], 0);
2073                 if (!ret)
2074                         goto success;
2075
2076 error2:
2077                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2078                         omap_vout_release_vrfb(vout);
2079                 omap_vout_free_buffers(vout);
2080 error1:
2081                 video_device_release(vfd);
2082 error:
2083                 kfree(vout);
2084                 return ret;
2085
2086 success:
2087                 dev_info(&pdev->dev, ": registered and initialized"
2088                                 " video device %d\n", vfd->minor);
2089                 if (k == (pdev->num_resources - 1))
2090                         return 0;
2091         }
2092
2093         return -ENODEV;
2094 }
2095 /* Driver functions */
2096 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2097 {
2098         struct video_device *vfd;
2099         struct omapvideo_info *ovid;
2100
2101         if (!vout)
2102                 return;
2103
2104         vfd = vout->vfd;
2105         ovid = &vout->vid_info;
2106         if (vfd) {
2107                 if (!video_is_registered(vfd)) {
2108                         /*
2109                          * The device was never registered, so release the
2110                          * video_device struct directly.
2111                          */
2112                         video_device_release(vfd);
2113                 } else {
2114                         /*
2115                          * The unregister function will release the video_device
2116                          * struct as well as unregistering it.
2117                          */
2118                         video_unregister_device(vfd);
2119                 }
2120         }
2121         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2122                 omap_vout_release_vrfb(vout);
2123                 /* Free the VRFB buffer if allocated
2124                  * init time
2125                  */
2126                 if (vout->vrfb_static_allocation)
2127                         omap_vout_free_vrfb_buffers(vout);
2128         }
2129         omap_vout_free_buffers(vout);
2130
2131         kfree(vout);
2132 }
2133
2134 static int omap_vout_remove(struct platform_device *pdev)
2135 {
2136         int k;
2137         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2138         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2139                         omap2video_device, v4l2_dev);
2140
2141         v4l2_device_unregister(v4l2_dev);
2142         for (k = 0; k < pdev->num_resources; k++)
2143                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2144
2145         for (k = 0; k < vid_dev->num_displays; k++) {
2146                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2147                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2148
2149                 omap_dss_put_device(vid_dev->displays[k]);
2150         }
2151         kfree(vid_dev);
2152         return 0;
2153 }
2154
2155 static int __init omap_vout_probe(struct platform_device *pdev)
2156 {
2157         int ret = 0, i;
2158         struct omap_overlay *ovl;
2159         struct omap_dss_device *dssdev = NULL;
2160         struct omap_dss_device *def_display;
2161         struct omap2video_device *vid_dev = NULL;
2162
2163         if (pdev->num_resources == 0) {
2164                 dev_err(&pdev->dev, "probed for an unknown device\n");
2165                 return -ENODEV;
2166         }
2167
2168         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2169         if (vid_dev == NULL)
2170                 return -ENOMEM;
2171
2172         vid_dev->num_displays = 0;
2173         for_each_dss_dev(dssdev) {
2174                 omap_dss_get_device(dssdev);
2175
2176                 if (!dssdev->driver) {
2177                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2178                                         dssdev->name);
2179                         omap_dss_put_device(dssdev);
2180                         continue;
2181                 }
2182
2183                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2184         }
2185
2186         if (vid_dev->num_displays == 0) {
2187                 dev_err(&pdev->dev, "no displays\n");
2188                 ret = -EINVAL;
2189                 goto probe_err0;
2190         }
2191
2192         vid_dev->num_overlays = omap_dss_get_num_overlays();
2193         for (i = 0; i < vid_dev->num_overlays; i++)
2194                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2195
2196         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2197         for (i = 0; i < vid_dev->num_managers; i++)
2198                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2199
2200         /* Get the Video1 overlay and video2 overlay.
2201          * Setup the Display attached to that overlays
2202          */
2203         for (i = 1; i < vid_dev->num_overlays; i++) {
2204                 ovl = omap_dss_get_overlay(i);
2205                 if (ovl->manager && ovl->manager->device) {
2206                         def_display = ovl->manager->device;
2207                 } else {
2208                         dev_warn(&pdev->dev, "cannot find display\n");
2209                         def_display = NULL;
2210                 }
2211                 if (def_display) {
2212                         struct omap_dss_driver *dssdrv = def_display->driver;
2213
2214                         ret = dssdrv->enable(def_display);
2215                         if (ret) {
2216                                 /* Here we are not considering a error
2217                                  *  as display may be enabled by frame
2218                                  *  buffer driver
2219                                  */
2220                                 dev_warn(&pdev->dev,
2221                                         "'%s' Display already enabled\n",
2222                                         def_display->name);
2223                         }
2224                 }
2225         }
2226
2227         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2228                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2229                 ret = -ENODEV;
2230                 goto probe_err1;
2231         }
2232
2233         ret = omap_vout_create_video_devices(pdev);
2234         if (ret)
2235                 goto probe_err2;
2236
2237         for (i = 0; i < vid_dev->num_displays; i++) {
2238                 struct omap_dss_device *display = vid_dev->displays[i];
2239
2240                 if (display->driver->update)
2241                         display->driver->update(display, 0, 0,
2242                                         display->panel.timings.x_res,
2243                                         display->panel.timings.y_res);
2244         }
2245         return 0;
2246
2247 probe_err2:
2248         v4l2_device_unregister(&vid_dev->v4l2_dev);
2249 probe_err1:
2250         for (i = 1; i < vid_dev->num_overlays; i++) {
2251                 def_display = NULL;
2252                 ovl = omap_dss_get_overlay(i);
2253                 if (ovl->manager && ovl->manager->device)
2254                         def_display = ovl->manager->device;
2255
2256                 if (def_display && def_display->driver)
2257                         def_display->driver->disable(def_display);
2258         }
2259 probe_err0:
2260         kfree(vid_dev);
2261         return ret;
2262 }
2263
2264 static struct platform_driver omap_vout_driver = {
2265         .driver = {
2266                 .name = VOUT_NAME,
2267         },
2268         .probe = omap_vout_probe,
2269         .remove = omap_vout_remove,
2270 };
2271
2272 static int __init omap_vout_init(void)
2273 {
2274         if (platform_driver_register(&omap_vout_driver) != 0) {
2275                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2276                 return -EINVAL;
2277         }
2278         return 0;
2279 }
2280
2281 static void omap_vout_cleanup(void)
2282 {
2283         platform_driver_unregister(&omap_vout_driver);
2284 }
2285
2286 late_initcall(omap_vout_init);
2287 module_exit(omap_vout_cleanup);