Pileus Git - ~andy/linux/blob - drivers/media/platform/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 <video/omapvrfb.h>
  48 #include <video/omapdss.h>
  49
  50 #include "omap_voutlib.h"
  51 #include "omap_voutdef.h"
  52 #include "omap_vout_vrfb.h"
  53
  54 MODULE_AUTHOR("Texas Instruments");
  55 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
  56 MODULE_LICENSE("GPL");
  57
  58 /* Driver Configuration macros */
  59 #define VOUT_NAME               "omap_vout"
  60
  61 enum omap_vout_channels {
  62         OMAP_VIDEO1,
  63         OMAP_VIDEO2,
  64 };
  65
  66 static struct videobuf_queue_ops video_vbq_ops;
  67 /* Variables configurable through module params*/
  68 static u32 video1_numbuffers = 3;
  69 static u32 video2_numbuffers = 3;
  70 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  71 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  72 static bool vid1_static_vrfb_alloc;
  73 static bool vid2_static_vrfb_alloc;
  74 static bool debug;
  75
  76 /* Module parameters */
  77 module_param(video1_numbuffers, uint, S_IRUGO);
  78 MODULE_PARM_DESC(video1_numbuffers,
  79         "Number of buffers to be allocated at init time for Video1 device.");
  80
  81 module_param(video2_numbuffers, uint, S_IRUGO);
  82 MODULE_PARM_DESC(video2_numbuffers,
  83         "Number of buffers to be allocated at init time for Video2 device.");
  84
  85 module_param(video1_bufsize, uint, S_IRUGO);
  86 MODULE_PARM_DESC(video1_bufsize,
  87         "Size of the buffer to be allocated for video1 device");
  88
  89 module_param(video2_bufsize, uint, S_IRUGO);
  90 MODULE_PARM_DESC(video2_bufsize,
  91         "Size of the buffer to be allocated for video2 device");
  92
  93 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
  94 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
  95         "Static allocation of the VRFB buffer for video1 device");
  96
  97 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
  98 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
  99         "Static allocation of the VRFB buffer for video2 device");
 100
 101 module_param(debug, bool, S_IRUGO);
 102 MODULE_PARM_DESC(debug, "Debug level (0-1)");
 103
 104 /* list of image formats supported by OMAP2 video pipelines */
 105 static const struct v4l2_fmtdesc omap_formats[] = {
 106         {
 107                 /* Note:  V4L2 defines RGB565 as:
 108                  *
 109                  *      Byte 0                    Byte 1
 110                  *      g2 g1 g0 r4 r3 r2 r1 r0   b4 b3 b2 b1 b0 g5 g4 g3
 111                  *
 112                  * We interpret RGB565 as:
 113                  *
 114                  *      Byte 0                    Byte 1
 115                  *      g2 g1 g0 b4 b3 b2 b1 b0   r4 r3 r2 r1 r0 g5 g4 g3
 116                  */
 117                 .description = "RGB565, le",
 118                 .pixelformat = V4L2_PIX_FMT_RGB565,
 119         },
 120         {
 121                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
 122                  *  this for RGB24 unpack mode, the last 8 bits are ignored
 123                  * */
 124                 .description = "RGB32, le",
 125                 .pixelformat = V4L2_PIX_FMT_RGB32,
 126         },
 127         {
 128                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
 129                  *        this for RGB24 packed mode
 130                  *
 131                  */
 132                 .description = "RGB24, le",
 133                 .pixelformat = V4L2_PIX_FMT_RGB24,
 134         },
 135         {
 136                 .description = "YUYV (YUV 4:2:2), packed",
 137                 .pixelformat = V4L2_PIX_FMT_YUYV,
 138         },
 139         {
 140                 .description = "UYVY, packed",
 141                 .pixelformat = V4L2_PIX_FMT_UYVY,
 142         },
 143 };
 144
 145 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
 146
 147 /*
 148  * Try format
 149  */
 150 static int omap_vout_try_format(struct v4l2_pix_format *pix)
 151 {
 152         int ifmt, bpp = 0;
 153
 154         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
 155                                                 (u32)VID_MAX_HEIGHT);
 156         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
 157
 158         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
 159                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
 160                         break;
 161         }
 162
 163         if (ifmt == NUM_OUTPUT_FORMATS)
 164                 ifmt = 0;
 165
 166         pix->pixelformat = omap_formats[ifmt].pixelformat;
 167         pix->field = V4L2_FIELD_ANY;
 168         pix->priv = 0;
 169
 170         switch (pix->pixelformat) {
 171         case V4L2_PIX_FMT_YUYV:
 172         case V4L2_PIX_FMT_UYVY:
 173         default:
 174                 pix->colorspace = V4L2_COLORSPACE_JPEG;
 175                 bpp = YUYV_BPP;
 176                 break;
 177         case V4L2_PIX_FMT_RGB565:
 178         case V4L2_PIX_FMT_RGB565X:
 179                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 180                 bpp = RGB565_BPP;
 181                 break;
 182         case V4L2_PIX_FMT_RGB24:
 183                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 184                 bpp = RGB24_BPP;
 185                 break;
 186         case V4L2_PIX_FMT_RGB32:
 187         case V4L2_PIX_FMT_BGR32:
 188                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 189                 bpp = RGB32_BPP;
 190                 break;
 191         }
 192         pix->bytesperline = pix->width * bpp;
 193         pix->sizeimage = pix->bytesperline * pix->height;
 194
 195         return bpp;
 196 }
 197
 198 /*
 199  * omap_vout_uservirt_to_phys: This inline function is used to convert user
 200  * space virtual address to physical address.
 201  */
 202 static u32 omap_vout_uservirt_to_phys(u32 virtp)
 203 {
 204         unsigned long physp = 0;
 205         struct vm_area_struct *vma;
 206         struct mm_struct *mm = current->mm;
 207
 208         /* For kernel direct-mapped memory, take the easy way */
 209         if (virtp >= PAGE_OFFSET)
 210                 return virt_to_phys((void *) virtp);
 211
 212         down_read(&current->mm->mmap_sem);
 213         vma = find_vma(mm, virtp);
 214         if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
 215                 /* this will catch, kernel-allocated, mmaped-to-usermode
 216                    addresses */
 217                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
 218                 up_read(&current->mm->mmap_sem);
 219         } else {
 220                 /* otherwise, use get_user_pages() for general userland pages */
 221                 int res, nr_pages = 1;
 222                 struct page *pages;
 223
 224                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
 225                                 0, &pages, NULL);
 226                 up_read(&current->mm->mmap_sem);
 227
 228                 if (res == nr_pages) {
 229                         physp =  __pa(page_address(&pages[0]) +
 230                                         (virtp & ~PAGE_MASK));
 231                 } else {
 232                         printk(KERN_WARNING VOUT_NAME
 233                                         "get_user_pages failed\n");
 234                         return 0;
 235                 }
 236         }
 237
 238         return physp;
 239 }
 240
 241 /*
 242  * Free the V4L2 buffers
 243  */
 244 void omap_vout_free_buffers(struct omap_vout_device *vout)
 245 {
 246         int i, numbuffers;
 247
 248         /* Allocate memory for the buffers */
 249         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
 250         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
 251
 252         for (i = 0; i < numbuffers; i++) {
 253                 omap_vout_free_buffer(vout->buf_virt_addr[i],
 254                                 vout->buffer_size);
 255                 vout->buf_phy_addr[i] = 0;
 256                 vout->buf_virt_addr[i] = 0;
 257         }
 258 }
 259
 260 /*
 261  * Convert V4L2 rotation to DSS rotation
 262  *      V4L2 understand 0, 90, 180, 270.
 263  *      Convert to 0, 1, 2 and 3 respectively for DSS
 264  */
 265 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
 266                         enum dss_rotation *rotation, bool mirror)
 267 {
 268         int ret = 0;
 269
 270         switch (v4l2_rotation) {
 271         case 90:
 272                 *rotation = dss_rotation_90_degree;
 273                 break;
 274         case 180:
 275                 *rotation = dss_rotation_180_degree;
 276                 break;
 277         case 270:
 278                 *rotation = dss_rotation_270_degree;
 279                 break;
 280         case 0:
 281                 *rotation = dss_rotation_0_degree;
 282                 break;
 283         default:
 284                 ret = -EINVAL;
 285         }
 286         return ret;
 287 }
 288
 289 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
 290 {
 291         struct omapvideo_info *ovid;
 292         struct v4l2_rect *crop = &vout->crop;
 293         struct v4l2_pix_format *pix = &vout->pix;
 294         int *cropped_offset = &vout->cropped_offset;
 295         int ps = 2, line_length = 0;
 296
 297         ovid = &vout->vid_info;
 298
 299         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 300                 omap_vout_calculate_vrfb_offset(vout);
 301         } else {
 302                 vout->line_length = line_length = pix->width;
 303
 304                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
 305                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
 306                         ps = 2;
 307                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
 308                         ps = 4;
 309                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
 310                         ps = 3;
 311
 312                 vout->ps = ps;
 313
 314                 *cropped_offset = (line_length * ps) *
 315                         crop->top + crop->left * ps;
 316         }
 317
 318         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
 319                         __func__, vout->cropped_offset);
 320
 321         return 0;
 322 }
 323
 324 /*
 325  * Convert V4L2 pixel format to DSS pixel format
 326  */
 327 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
 328 {
 329         struct omap_overlay *ovl;
 330         struct omapvideo_info *ovid;
 331         struct v4l2_pix_format *pix = &vout->pix;
 332         enum omap_color_mode mode;
 333
 334         ovid = &vout->vid_info;
 335         ovl = ovid->overlays[0];
 336
 337         switch (pix->pixelformat) {
 338         case 0:
 339                 break;
 340         case V4L2_PIX_FMT_YUYV:
 341                 mode = OMAP_DSS_COLOR_YUV2;
 342                 break;
 343         case V4L2_PIX_FMT_UYVY:
 344                 mode = OMAP_DSS_COLOR_UYVY;
 345                 break;
 346         case V4L2_PIX_FMT_RGB565:
 347                 mode = OMAP_DSS_COLOR_RGB16;
 348                 break;
 349         case V4L2_PIX_FMT_RGB24:
 350                 mode = OMAP_DSS_COLOR_RGB24P;
 351                 break;
 352         case V4L2_PIX_FMT_RGB32:
 353                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
 354                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
 355                 break;
 356         case V4L2_PIX_FMT_BGR32:
 357                 mode = OMAP_DSS_COLOR_RGBX32;
 358                 break;
 359         default:
 360                 mode = -EINVAL;
 361         }
 362         return mode;
 363 }
 364
 365 /*
 366  * Setup the overlay
 367  */
 368 static int omapvid_setup_overlay(struct omap_vout_device *vout,
 369                 struct omap_overlay *ovl, int posx, int posy, int outw,
 370                 int outh, u32 addr)
 371 {
 372         int ret = 0;
 373         struct omap_overlay_info info;
 374         int cropheight, cropwidth, pixheight, pixwidth;
 375
 376         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
 377                         (outw != vout->pix.width || outh != vout->pix.height)) {
 378                 ret = -EINVAL;
 379                 goto setup_ovl_err;
 380         }
 381
 382         vout->dss_mode = video_mode_to_dss_mode(vout);
 383         if (vout->dss_mode == -EINVAL) {
 384                 ret = -EINVAL;
 385                 goto setup_ovl_err;
 386         }
 387
 388         /* Setup the input plane parameters according to
 389          * rotation value selected.
 390          */
 391         if (is_rotation_90_or_270(vout)) {
 392                 cropheight = vout->crop.width;
 393                 cropwidth = vout->crop.height;
 394                 pixheight = vout->pix.width;
 395                 pixwidth = vout->pix.height;
 396         } else {
 397                 cropheight = vout->crop.height;
 398                 cropwidth = vout->crop.width;
 399                 pixheight = vout->pix.height;
 400                 pixwidth = vout->pix.width;
 401         }
 402
 403         ovl->get_overlay_info(ovl, &info);
 404         info.paddr = addr;
 405         info.width = cropwidth;
 406         info.height = cropheight;
 407         info.color_mode = vout->dss_mode;
 408         info.mirror = vout->mirror;
 409         info.pos_x = posx;
 410         info.pos_y = posy;
 411         info.out_width = outw;
 412         info.out_height = outh;
 413         info.global_alpha = vout->win.global_alpha;
 414         if (!is_rotation_enabled(vout)) {
 415                 info.rotation = 0;
 416                 info.rotation_type = OMAP_DSS_ROT_DMA;
 417                 info.screen_width = pixwidth;
 418         } else {
 419                 info.rotation = vout->rotation;
 420                 info.rotation_type = OMAP_DSS_ROT_VRFB;
 421                 info.screen_width = 2048;
 422         }
 423
 424         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 425                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
 426                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
 427                 "out_height=%d rotation_type=%d screen_width=%d\n",
 428                 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
 429                 info.color_mode, info.rotation, info.mirror, info.pos_x,
 430                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
 431                 info.screen_width);
 432
 433         ret = ovl->set_overlay_info(ovl, &info);
 434         if (ret)
 435                 goto setup_ovl_err;
 436
 437         return 0;
 438
 439 setup_ovl_err:
 440         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
 441         return ret;
 442 }
 443
 444 /*
 445  * Initialize the overlay structure
 446  */
 447 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
 448 {
 449         int ret = 0, i;
 450         struct v4l2_window *win;
 451         struct omap_overlay *ovl;
 452         int posx, posy, outw, outh, temp;
 453         struct omap_video_timings *timing;
 454         struct omapvideo_info *ovid = &vout->vid_info;
 455
 456         win = &vout->win;
 457         for (i = 0; i < ovid->num_overlays; i++) {
 458                 struct omap_dss_device *dssdev;
 459
 460                 ovl = ovid->overlays[i];
 461                 dssdev = ovl->get_device(ovl);
 462
 463                 if (!dssdev)
 464                         return -EINVAL;
 465
 466                 timing = &dssdev->panel.timings;
 467
 468                 outw = win->w.width;
 469                 outh = win->w.height;
 470                 switch (vout->rotation) {
 471                 case dss_rotation_90_degree:
 472                         /* Invert the height and width for 90
 473                          * and 270 degree rotation
 474                          */
 475                         temp = outw;
 476                         outw = outh;
 477                         outh = temp;
 478                         posy = (timing->y_res - win->w.width) - win->w.left;
 479                         posx = win->w.top;
 480                         break;
 481
 482                 case dss_rotation_180_degree:
 483                         posx = (timing->x_res - win->w.width) - win->w.left;
 484                         posy = (timing->y_res - win->w.height) - win->w.top;
 485                         break;
 486
 487                 case dss_rotation_270_degree:
 488                         temp = outw;
 489                         outw = outh;
 490                         outh = temp;
 491                         posy = win->w.left;
 492                         posx = (timing->x_res - win->w.height) - win->w.top;
 493                         break;
 494
 495                 default:
 496                         posx = win->w.left;
 497                         posy = win->w.top;
 498                         break;
 499                 }
 500
 501                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
 502                                 outw, outh, addr);
 503                 if (ret)
 504                         goto omapvid_init_err;
 505         }
 506         return 0;
 507
 508 omapvid_init_err:
 509         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
 510         return ret;
 511 }
 512
 513 /*
 514  * Apply the changes set the go bit of DSS
 515  */
 516 static int omapvid_apply_changes(struct omap_vout_device *vout)
 517 {
 518         int i;
 519         struct omap_overlay *ovl;
 520         struct omapvideo_info *ovid = &vout->vid_info;
 521
 522         for (i = 0; i < ovid->num_overlays; i++) {
 523                 struct omap_dss_device *dssdev;
 524
 525                 ovl = ovid->overlays[i];
 526                 dssdev = ovl->get_device(ovl);
 527                 if (!dssdev)
 528                         return -EINVAL;
 529                 ovl->manager->apply(ovl->manager);
 530         }
 531
 532         return 0;
 533 }
 534
 535 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
 536                 unsigned int irqstatus, struct timeval timevalue)
 537 {
 538         u32 fid;
 539
 540         if (vout->first_int) {
 541                 vout->first_int = 0;
 542                 goto err;
 543         }
 544
 545         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
 546                 fid = 1;
 547         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
 548                 fid = 0;
 549         else
 550                 goto err;
 551
 552         vout->field_id ^= 1;
 553         if (fid != vout->field_id) {
 554                 if (fid == 0)
 555                         vout->field_id = fid;
 556         } else if (0 == fid) {
 557                 if (vout->cur_frm == vout->next_frm)
 558                         goto err;
 559
 560                 vout->cur_frm->ts = timevalue;
 561                 vout->cur_frm->state = VIDEOBUF_DONE;
 562                 wake_up_interruptible(&vout->cur_frm->done);
 563                 vout->cur_frm = vout->next_frm;
 564         } else {
 565                 if (list_empty(&vout->dma_queue) ||
 566                                 (vout->cur_frm != vout->next_frm))
 567                         goto err;
 568         }
 569
 570         return vout->field_id;
 571 err:
 572         return 0;
 573 }
 574
 575 static void omap_vout_isr(void *arg, unsigned int irqstatus)
 576 {
 577         int ret, fid, mgr_id;
 578         u32 addr, irq;
 579         struct omap_overlay *ovl;
 580         struct timeval timevalue;
 581         struct omapvideo_info *ovid;
 582         struct omap_dss_device *cur_display;
 583         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
 584
 585         if (!vout->streaming)
 586                 return;
 587
 588         ovid = &vout->vid_info;
 589         ovl = ovid->overlays[0];
 590
 591         mgr_id = ovl->manager->id;
 592
 593         /* get the display device attached to the overlay */
 594         cur_display = ovl->get_device(ovl);
 595
 596         if (!cur_display)
 597                 return;
 598
 599         spin_lock(&vout->vbq_lock);
 600         v4l2_get_timestamp(&timevalue);
 601
 602         switch (cur_display->type) {
 603         case OMAP_DISPLAY_TYPE_DSI:
 604         case OMAP_DISPLAY_TYPE_DPI:
 605                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
 606                         irq = DISPC_IRQ_VSYNC;
 607                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
 608                         irq = DISPC_IRQ_VSYNC2;
 609                 else
 610                         goto vout_isr_err;
 611
 612                 if (!(irqstatus & irq))
 613                         goto vout_isr_err;
 614                 break;
 615         case OMAP_DISPLAY_TYPE_VENC:
 616                 fid = omapvid_handle_interlace_display(vout, irqstatus,
 617                                 timevalue);
 618                 if (!fid)
 619                         goto vout_isr_err;
 620                 break;
 621         case OMAP_DISPLAY_TYPE_HDMI:
 622                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
 623                         goto vout_isr_err;
 624                 break;
 625         default:
 626                 goto vout_isr_err;
 627         }
 628
 629         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
 630                 vout->cur_frm->ts = timevalue;
 631                 vout->cur_frm->state = VIDEOBUF_DONE;
 632                 wake_up_interruptible(&vout->cur_frm->done);
 633                 vout->cur_frm = vout->next_frm;
 634         }
 635
 636         vout->first_int = 0;
 637         if (list_empty(&vout->dma_queue))
 638                 goto vout_isr_err;
 639
 640         vout->next_frm = list_entry(vout->dma_queue.next,
 641                         struct videobuf_buffer, queue);
 642         list_del(&vout->next_frm->queue);
 643
 644         vout->next_frm->state = VIDEOBUF_ACTIVE;
 645
 646         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
 647                 + vout->cropped_offset;
 648
 649         /* First save the configuration in ovelray structure */
 650         ret = omapvid_init(vout, addr);
 651         if (ret) {
 652                 printk(KERN_ERR VOUT_NAME
 653                         "failed to set overlay info\n");
 654                 goto vout_isr_err;
 655         }
 656
 657         /* Enable the pipeline and set the Go bit */
 658         ret = omapvid_apply_changes(vout);
 659         if (ret)
 660                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
 661
 662 vout_isr_err:
 663         spin_unlock(&vout->vbq_lock);
 664 }
 665
 666 /* Video buffer call backs */
 667
 668 /*
 669  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
 670  * called. This is used to setup buffers and return size and count of
 671  * buffers allocated. After the call to this buffer, videobuf layer will
 672  * setup buffer queue depending on the size and count of buffers
 673  */
 674 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 675                           unsigned int *size)
 676 {
 677         int startindex = 0, i, j;
 678         u32 phy_addr = 0, virt_addr = 0;
 679         struct omap_vout_device *vout = q->priv_data;
 680         struct omapvideo_info *ovid = &vout->vid_info;
 681         int vid_max_buf_size;
 682
 683         if (!vout)
 684                 return -EINVAL;
 685
 686         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
 687                 video2_bufsize;
 688
 689         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
 690                 return -EINVAL;
 691
 692         startindex = (vout->vid == OMAP_VIDEO1) ?
 693                 video1_numbuffers : video2_numbuffers;
 694         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
 695                 *count = startindex;
 696
 697         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 698                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
 699                         return -ENOMEM;
 700         }
 701
 702         if (V4L2_MEMORY_MMAP != vout->memory)
 703                 return 0;
 704
 705         /* Now allocated the V4L2 buffers */
 706         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
 707         startindex = (vout->vid == OMAP_VIDEO1) ?
 708                 video1_numbuffers : video2_numbuffers;
 709
 710         /* Check the size of the buffer */
 711         if (*size > vid_max_buf_size) {
 712                 v4l2_err(&vout->vid_dev->v4l2_dev,
 713                                 "buffer allocation mismatch [%u] [%u]\n",
 714                                 *size, vout->buffer_size);
 715                 return -ENOMEM;
 716         }
 717
 718         for (i = startindex; i < *count; i++) {
 719                 vout->buffer_size = *size;
 720
 721                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
 722                                 &phy_addr);
 723                 if (!virt_addr) {
 724                         if (ovid->rotation_type == VOUT_ROT_NONE) {
 725                                 break;
 726                         } else {
 727                                 if (!is_rotation_enabled(vout))
 728                                         break;
 729                         /* Free the VRFB buffers if no space for V4L2 buffers */
 730                         for (j = i; j < *count; j++) {
 731                                 omap_vout_free_buffer(
 732                                                 vout->smsshado_virt_addr[j],
 733                                                 vout->smsshado_size);
 734                                 vout->smsshado_virt_addr[j] = 0;
 735                                 vout->smsshado_phy_addr[j] = 0;
 736                                 }
 737                         }
 738                 }
 739                 vout->buf_virt_addr[i] = virt_addr;
 740                 vout->buf_phy_addr[i] = phy_addr;
 741         }
 742         *count = vout->buffer_allocated = i;
 743
 744         return 0;
 745 }
 746
 747 /*
 748  * Free the V4L2 buffers additionally allocated than default
 749  * number of buffers
 750  */
 751 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
 752 {
 753         int num_buffers = 0, i;
 754
 755         num_buffers = (vout->vid == OMAP_VIDEO1) ?
 756                 video1_numbuffers : video2_numbuffers;
 757
 758         for (i = num_buffers; i < vout->buffer_allocated; i++) {
 759                 if (vout->buf_virt_addr[i])
 760                         omap_vout_free_buffer(vout->buf_virt_addr[i],
 761                                         vout->buffer_size);
 762
 763                 vout->buf_virt_addr[i] = 0;
 764                 vout->buf_phy_addr[i] = 0;
 765         }
 766         vout->buffer_allocated = num_buffers;
 767 }
 768
 769 /*
 770  * This function will be called when VIDIOC_QBUF ioctl is called.
 771  * It prepare buffers before give out for the display. This function
 772  * converts user space virtual address into physical address if userptr memory
 773  * exchange mechanism is used. If rotation is enabled, it copies entire
 774  * buffer into VRFB memory space before giving it to the DSS.
 775  */
 776 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
 777                         struct videobuf_buffer *vb,
 778                         enum v4l2_field field)
 779 {
 780         struct omap_vout_device *vout = q->priv_data;
 781         struct omapvideo_info *ovid = &vout->vid_info;
 782
 783         if (VIDEOBUF_NEEDS_INIT == vb->state) {
 784                 vb->width = vout->pix.width;
 785                 vb->height = vout->pix.height;
 786                 vb->size = vb->width * vb->height * vout->bpp;
 787                 vb->field = field;
 788         }
 789         vb->state = VIDEOBUF_PREPARED;
 790         /* if user pointer memory mechanism is used, get the physical
 791          * address of the buffer
 792          */
 793         if (V4L2_MEMORY_USERPTR == vb->memory) {
 794                 if (0 == vb->baddr)
 795                         return -EINVAL;
 796                 /* Physical address */
 797                 vout->queued_buf_addr[vb->i] = (u8 *)
 798                         omap_vout_uservirt_to_phys(vb->baddr);
 799         } else {
 800                 u32 addr, dma_addr;
 801                 unsigned long size;
 802
 803                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
 804                 size = (unsigned long) vb->size;
 805
 806                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
 807                                 size, DMA_TO_DEVICE);
 808                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
 809                         v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
 810
 811                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
 812         }
 813
 814         if (ovid->rotation_type == VOUT_ROT_VRFB)
 815                 return omap_vout_prepare_vrfb(vout, vb);
 816         else
 817                 return 0;
 818 }
 819
 820 /*
 821  * Buffer queue function will be called from the videobuf layer when _QBUF
 822  * ioctl is called. It is used to enqueue buffer, which is ready to be
 823  * displayed.
 824  */
 825 static void omap_vout_buffer_queue(struct videobuf_queue *q,
 826                           struct videobuf_buffer *vb)
 827 {
 828         struct omap_vout_device *vout = q->priv_data;
 829
 830         /* Driver is also maintainig a queue. So enqueue buffer in the driver
 831          * queue */
 832         list_add_tail(&vb->queue, &vout->dma_queue);
 833
 834         vb->state = VIDEOBUF_QUEUED;
 835 }
 836
 837 /*
 838  * Buffer release function is called from videobuf layer to release buffer
 839  * which are already allocated
 840  */
 841 static void omap_vout_buffer_release(struct videobuf_queue *q,
 842                             struct videobuf_buffer *vb)
 843 {
 844         struct omap_vout_device *vout = q->priv_data;
 845
 846         vb->state = VIDEOBUF_NEEDS_INIT;
 847
 848         if (V4L2_MEMORY_MMAP != vout->memory)
 849                 return;
 850 }
 851
 852 /*
 853  *  File operations
 854  */
 855 static unsigned int omap_vout_poll(struct file *file,
 856                                    struct poll_table_struct *wait)
 857 {
 858         struct omap_vout_device *vout = file->private_data;
 859         struct videobuf_queue *q = &vout->vbq;
 860
 861         return videobuf_poll_stream(file, q, wait);
 862 }
 863
 864 static void omap_vout_vm_open(struct vm_area_struct *vma)
 865 {
 866         struct omap_vout_device *vout = vma->vm_private_data;
 867
 868         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 869                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 870         vout->mmap_count++;
 871 }
 872
 873 static void omap_vout_vm_close(struct vm_area_struct *vma)
 874 {
 875         struct omap_vout_device *vout = vma->vm_private_data;
 876
 877         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 878                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 879         vout->mmap_count--;
 880 }
 881
 882 static struct vm_operations_struct omap_vout_vm_ops = {
 883         .open   = omap_vout_vm_open,
 884         .close  = omap_vout_vm_close,
 885 };
 886
 887 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
 888 {
 889         int i;
 890         void *pos;
 891         unsigned long start = vma->vm_start;
 892         unsigned long size = (vma->vm_end - vma->vm_start);
 893         struct omap_vout_device *vout = file->private_data;
 894         struct videobuf_queue *q = &vout->vbq;
 895
 896         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 897                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
 898                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
 899
 900         /* look for the buffer to map */
 901         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
 902                 if (NULL == q->bufs[i])
 903                         continue;
 904                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
 905                         continue;
 906                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
 907                         break;
 908         }
 909
 910         if (VIDEO_MAX_FRAME == i) {
 911                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 912                                 "offset invalid [offset=0x%lx]\n",
 913                                 (vma->vm_pgoff << PAGE_SHIFT));
 914                 return -EINVAL;
 915         }
 916         /* Check the size of the buffer */
 917         if (size > vout->buffer_size) {
 918                 v4l2_err(&vout->vid_dev->v4l2_dev,
 919                                 "insufficient memory [%lu] [%u]\n",
 920                                 size, vout->buffer_size);
 921                 return -ENOMEM;
 922         }
 923
 924         q->bufs[i]->baddr = vma->vm_start;
 925
 926         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 927         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 928         vma->vm_ops = &omap_vout_vm_ops;
 929         vma->vm_private_data = (void *) vout;
 930         pos = (void *)vout->buf_virt_addr[i];
 931         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
 932         while (size > 0) {
 933                 unsigned long pfn;
 934                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
 935                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
 936                         return -EAGAIN;
 937                 start += PAGE_SIZE;
 938                 pos += PAGE_SIZE;
 939                 size -= PAGE_SIZE;
 940         }
 941         vout->mmap_count++;
 942         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 943
 944         return 0;
 945 }
 946
 947 static int omap_vout_release(struct file *file)
 948 {
 949         unsigned int ret, i;
 950         struct videobuf_queue *q;
 951         struct omapvideo_info *ovid;
 952         struct omap_vout_device *vout = file->private_data;
 953
 954         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
 955         ovid = &vout->vid_info;
 956
 957         if (!vout)
 958                 return 0;
 959
 960         q = &vout->vbq;
 961         /* Disable all the overlay managers connected with this interface */
 962         for (i = 0; i < ovid->num_overlays; i++) {
 963                 struct omap_overlay *ovl = ovid->overlays[i];
 964                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
 965
 966                 if (dssdev)
 967                         ovl->disable(ovl);
 968         }
 969         /* Turn off the pipeline */
 970         ret = omapvid_apply_changes(vout);
 971         if (ret)
 972                 v4l2_warn(&vout->vid_dev->v4l2_dev,
 973                                 "Unable to apply changes\n");
 974
 975         /* Free all buffers */
 976         omap_vout_free_extra_buffers(vout);
 977
 978         /* Free the VRFB buffers only if they are allocated
 979          * during reqbufs.  Don't free if init time allocated
 980          */
 981         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 982                 if (!vout->vrfb_static_allocation)
 983                         omap_vout_free_vrfb_buffers(vout);
 984         }
 985         videobuf_mmap_free(q);
 986
 987         /* Even if apply changes fails we should continue
 988            freeing allocated memory */
 989         if (vout->streaming) {
 990                 u32 mask = 0;
 991
 992                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
 993                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
 994                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
 995                 vout->streaming = 0;
 996
 997                 videobuf_streamoff(q);
 998                 videobuf_queue_cancel(q);
 999         }
1000
1001         if (vout->mmap_count != 0)
1002                 vout->mmap_count = 0;
1003
1004         vout->opened -= 1;
1005         file->private_data = NULL;
1006
1007         if (vout->buffer_allocated)
1008                 videobuf_mmap_free(q);
1009
1010         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1011         return ret;
1012 }
1013
1014 static int omap_vout_open(struct file *file)
1015 {
1016         struct videobuf_queue *q;
1017         struct omap_vout_device *vout = NULL;
1018
1019         vout = video_drvdata(file);
1020         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1021
1022         if (vout == NULL)
1023                 return -ENODEV;
1024
1025         /* for now, we only support single open */
1026         if (vout->opened)
1027                 return -EBUSY;
1028
1029         vout->opened += 1;
1030
1031         file->private_data = vout;
1032         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1033
1034         q = &vout->vbq;
1035         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1036         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1037         video_vbq_ops.buf_release = omap_vout_buffer_release;
1038         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1039         spin_lock_init(&vout->vbq_lock);
1040
1041         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1042                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1043                         sizeof(struct videobuf_buffer), vout, NULL);
1044
1045         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1046         return 0;
1047 }
1048
1049 /*
1050  * V4L2 ioctls
1051  */
1052 static int vidioc_querycap(struct file *file, void *fh,
1053                 struct v4l2_capability *cap)
1054 {
1055         struct omap_vout_device *vout = fh;
1056
1057         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1058         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1059         cap->bus_info[0] = '\0';
1060         cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1061                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1062
1063         return 0;
1064 }
1065
1066 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1067                         struct v4l2_fmtdesc *fmt)
1068 {
1069         int index = fmt->index;
1070
1071         if (index >= NUM_OUTPUT_FORMATS)
1072                 return -EINVAL;
1073
1074         fmt->flags = omap_formats[index].flags;
1075         strlcpy(fmt->description, omap_formats[index].description,
1076                         sizeof(fmt->description));
1077         fmt->pixelformat = omap_formats[index].pixelformat;
1078
1079         return 0;
1080 }
1081
1082 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1083                         struct v4l2_format *f)
1084 {
1085         struct omap_vout_device *vout = fh;
1086
1087         f->fmt.pix = vout->pix;
1088         return 0;
1089
1090 }
1091
1092 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1093                         struct v4l2_format *f)
1094 {
1095         struct omap_overlay *ovl;
1096         struct omapvideo_info *ovid;
1097         struct omap_video_timings *timing;
1098         struct omap_vout_device *vout = fh;
1099         struct omap_dss_device *dssdev;
1100
1101         ovid = &vout->vid_info;
1102         ovl = ovid->overlays[0];
1103         /* get the display device attached to the overlay */
1104         dssdev = ovl->get_device(ovl);
1105
1106         if (!dssdev)
1107                 return -EINVAL;
1108
1109         timing = &dssdev->panel.timings;
1110
1111         vout->fbuf.fmt.height = timing->y_res;
1112         vout->fbuf.fmt.width = timing->x_res;
1113
1114         omap_vout_try_format(&f->fmt.pix);
1115         return 0;
1116 }
1117
1118 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1119                         struct v4l2_format *f)
1120 {
1121         int ret, bpp;
1122         struct omap_overlay *ovl;
1123         struct omapvideo_info *ovid;
1124         struct omap_video_timings *timing;
1125         struct omap_vout_device *vout = fh;
1126         struct omap_dss_device *dssdev;
1127
1128         if (vout->streaming)
1129                 return -EBUSY;
1130
1131         mutex_lock(&vout->lock);
1132
1133         ovid = &vout->vid_info;
1134         ovl = ovid->overlays[0];
1135         dssdev = ovl->get_device(ovl);
1136
1137         /* get the display device attached to the overlay */
1138         if (!dssdev) {
1139                 ret = -EINVAL;
1140                 goto s_fmt_vid_out_exit;
1141         }
1142         timing = &dssdev->panel.timings;
1143
1144         /* We dont support RGB24-packed mode if vrfb rotation
1145          * is enabled*/
1146         if ((is_rotation_enabled(vout)) &&
1147                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1148                 ret = -EINVAL;
1149                 goto s_fmt_vid_out_exit;
1150         }
1151
1152         /* get the framebuffer parameters */
1153
1154         if (is_rotation_90_or_270(vout)) {
1155                 vout->fbuf.fmt.height = timing->x_res;
1156                 vout->fbuf.fmt.width = timing->y_res;
1157         } else {
1158                 vout->fbuf.fmt.height = timing->y_res;
1159                 vout->fbuf.fmt.width = timing->x_res;
1160         }
1161
1162         /* change to samller size is OK */
1163
1164         bpp = omap_vout_try_format(&f->fmt.pix);
1165         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1166
1167         /* try & set the new output format */
1168         vout->bpp = bpp;
1169         vout->pix = f->fmt.pix;
1170         vout->vrfb_bpp = 1;
1171
1172         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1173         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1174                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1175                 vout->vrfb_bpp = 2;
1176
1177         /* set default crop and win */
1178         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1179
1180         ret = 0;
1181
1182 s_fmt_vid_out_exit:
1183         mutex_unlock(&vout->lock);
1184         return ret;
1185 }
1186
1187 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1188                         struct v4l2_format *f)
1189 {
1190         int ret = 0;
1191         struct omap_vout_device *vout = fh;
1192         struct omap_overlay *ovl;
1193         struct omapvideo_info *ovid;
1194         struct v4l2_window *win = &f->fmt.win;
1195
1196         ovid = &vout->vid_info;
1197         ovl = ovid->overlays[0];
1198
1199         ret = omap_vout_try_window(&vout->fbuf, win);
1200
1201         if (!ret) {
1202                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1203                         win->global_alpha = 255;
1204                 else
1205                         win->global_alpha = f->fmt.win.global_alpha;
1206         }
1207
1208         return ret;
1209 }
1210
1211 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1212                         struct v4l2_format *f)
1213 {
1214         int ret = 0;
1215         struct omap_overlay *ovl;
1216         struct omapvideo_info *ovid;
1217         struct omap_vout_device *vout = fh;
1218         struct v4l2_window *win = &f->fmt.win;
1219
1220         mutex_lock(&vout->lock);
1221         ovid = &vout->vid_info;
1222         ovl = ovid->overlays[0];
1223
1224         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1225         if (!ret) {
1226                 /* Video1 plane does not support global alpha on OMAP3 */
1227                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1228                         vout->win.global_alpha = 255;
1229                 else
1230                         vout->win.global_alpha = f->fmt.win.global_alpha;
1231
1232                 vout->win.chromakey = f->fmt.win.chromakey;
1233         }
1234         mutex_unlock(&vout->lock);
1235         return ret;
1236 }
1237
1238 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1239                         struct v4l2_format *f)
1240 {
1241         u32 key_value =  0;
1242         struct omap_overlay *ovl;
1243         struct omapvideo_info *ovid;
1244         struct omap_vout_device *vout = fh;
1245         struct omap_overlay_manager_info info;
1246         struct v4l2_window *win = &f->fmt.win;
1247
1248         ovid = &vout->vid_info;
1249         ovl = ovid->overlays[0];
1250
1251         win->w = vout->win.w;
1252         win->field = vout->win.field;
1253         win->global_alpha = vout->win.global_alpha;
1254
1255         if (ovl->manager && ovl->manager->get_manager_info) {
1256                 ovl->manager->get_manager_info(ovl->manager, &info);
1257                 key_value = info.trans_key;
1258         }
1259         win->chromakey = key_value;
1260         return 0;
1261 }
1262
1263 static int vidioc_cropcap(struct file *file, void *fh,
1264                 struct v4l2_cropcap *cropcap)
1265 {
1266         struct omap_vout_device *vout = fh;
1267         struct v4l2_pix_format *pix = &vout->pix;
1268
1269         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1270                 return -EINVAL;
1271
1272         /* Width and height are always even */
1273         cropcap->bounds.width = pix->width & ~1;
1274         cropcap->bounds.height = pix->height & ~1;
1275
1276         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1277         cropcap->pixelaspect.numerator = 1;
1278         cropcap->pixelaspect.denominator = 1;
1279         return 0;
1280 }
1281
1282 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1283 {
1284         struct omap_vout_device *vout = fh;
1285
1286         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1287                 return -EINVAL;
1288         crop->c = vout->crop;
1289         return 0;
1290 }
1291
1292 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1293 {
1294         int ret = -EINVAL;
1295         struct omap_vout_device *vout = fh;
1296         struct omapvideo_info *ovid;
1297         struct omap_overlay *ovl;
1298         struct omap_video_timings *timing;
1299         struct omap_dss_device *dssdev;
1300
1301         if (vout->streaming)
1302                 return -EBUSY;
1303
1304         mutex_lock(&vout->lock);
1305         ovid = &vout->vid_info;
1306         ovl = ovid->overlays[0];
1307         /* get the display device attached to the overlay */
1308         dssdev = ovl->get_device(ovl);
1309
1310         if (!dssdev) {
1311                 ret = -EINVAL;
1312                 goto s_crop_err;
1313         }
1314
1315         timing = &dssdev->panel.timings;
1316
1317         if (is_rotation_90_or_270(vout)) {
1318                 vout->fbuf.fmt.height = timing->x_res;
1319                 vout->fbuf.fmt.width = timing->y_res;
1320         } else {
1321                 vout->fbuf.fmt.height = timing->y_res;
1322                 vout->fbuf.fmt.width = timing->x_res;
1323         }
1324
1325         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1326                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1327                                 &vout->fbuf, &crop->c);
1328
1329 s_crop_err:
1330         mutex_unlock(&vout->lock);
1331         return ret;
1332 }
1333
1334 static int vidioc_queryctrl(struct file *file, void *fh,
1335                 struct v4l2_queryctrl *ctrl)
1336 {
1337         int ret = 0;
1338
1339         switch (ctrl->id) {
1340         case V4L2_CID_ROTATE:
1341                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1342                 break;
1343         case V4L2_CID_BG_COLOR:
1344                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1345                 break;
1346         case V4L2_CID_VFLIP:
1347                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1348                 break;
1349         default:
1350                 ctrl->name[0] = '\0';
1351                 ret = -EINVAL;
1352         }
1353         return ret;
1354 }
1355
1356 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1357 {
1358         int ret = 0;
1359         struct omap_vout_device *vout = fh;
1360
1361         switch (ctrl->id) {
1362         case V4L2_CID_ROTATE:
1363                 ctrl->value = vout->control[0].value;
1364                 break;
1365         case V4L2_CID_BG_COLOR:
1366         {
1367                 struct omap_overlay_manager_info info;
1368                 struct omap_overlay *ovl;
1369
1370                 ovl = vout->vid_info.overlays[0];
1371                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1372                         ret = -EINVAL;
1373                         break;
1374                 }
1375
1376                 ovl->manager->get_manager_info(ovl->manager, &info);
1377                 ctrl->value = info.default_color;
1378                 break;
1379         }
1380         case V4L2_CID_VFLIP:
1381                 ctrl->value = vout->control[2].value;
1382                 break;
1383         default:
1384                 ret = -EINVAL;
1385         }
1386         return ret;
1387 }
1388
1389 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1390 {
1391         int ret = 0;
1392         struct omap_vout_device *vout = fh;
1393
1394         switch (a->id) {
1395         case V4L2_CID_ROTATE:
1396         {
1397                 struct omapvideo_info *ovid;
1398                 int rotation = a->value;
1399
1400                 ovid = &vout->vid_info;
1401
1402                 mutex_lock(&vout->lock);
1403                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1404                         mutex_unlock(&vout->lock);
1405                         ret = -ERANGE;
1406                         break;
1407                 }
1408
1409                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1410                         mutex_unlock(&vout->lock);
1411                         ret = -EINVAL;
1412                         break;
1413                 }
1414
1415                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1416                                                         vout->mirror)) {
1417                         mutex_unlock(&vout->lock);
1418                         ret = -EINVAL;
1419                         break;
1420                 }
1421
1422                 vout->control[0].value = rotation;
1423                 mutex_unlock(&vout->lock);
1424                 break;
1425         }
1426         case V4L2_CID_BG_COLOR:
1427         {
1428                 struct omap_overlay *ovl;
1429                 unsigned int  color = a->value;
1430                 struct omap_overlay_manager_info info;
1431
1432                 ovl = vout->vid_info.overlays[0];
1433
1434                 mutex_lock(&vout->lock);
1435                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1436                         mutex_unlock(&vout->lock);
1437                         ret = -EINVAL;
1438                         break;
1439                 }
1440
1441                 ovl->manager->get_manager_info(ovl->manager, &info);
1442                 info.default_color = color;
1443                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1444                         mutex_unlock(&vout->lock);
1445                         ret = -EINVAL;
1446                         break;
1447                 }
1448
1449                 vout->control[1].value = color;
1450                 mutex_unlock(&vout->lock);
1451                 break;
1452         }
1453         case V4L2_CID_VFLIP:
1454         {
1455                 struct omap_overlay *ovl;
1456                 struct omapvideo_info *ovid;
1457                 unsigned int  mirror = a->value;
1458
1459                 ovid = &vout->vid_info;
1460                 ovl = ovid->overlays[0];
1461
1462                 mutex_lock(&vout->lock);
1463                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1464                         mutex_unlock(&vout->lock);
1465                         ret = -ERANGE;
1466                         break;
1467                 }
1468
1469                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1470                         mutex_unlock(&vout->lock);
1471                         ret = -EINVAL;
1472                         break;
1473                 }
1474                 vout->mirror = mirror;
1475                 vout->control[2].value = mirror;
1476                 mutex_unlock(&vout->lock);
1477                 break;
1478         }
1479         default:
1480                 ret = -EINVAL;
1481         }
1482         return ret;
1483 }
1484
1485 static int vidioc_reqbufs(struct file *file, void *fh,
1486                         struct v4l2_requestbuffers *req)
1487 {
1488         int ret = 0;
1489         unsigned int i, num_buffers = 0;
1490         struct omap_vout_device *vout = fh;
1491         struct videobuf_queue *q = &vout->vbq;
1492
1493         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1494                 return -EINVAL;
1495         /* if memory is not mmp or userptr
1496            return error */
1497         if ((V4L2_MEMORY_MMAP != req->memory) &&
1498                         (V4L2_MEMORY_USERPTR != req->memory))
1499                 return -EINVAL;
1500
1501         mutex_lock(&vout->lock);
1502         /* Cannot be requested when streaming is on */
1503         if (vout->streaming) {
1504                 ret = -EBUSY;
1505                 goto reqbuf_err;
1506         }
1507
1508         /* If buffers are already allocated free them */
1509         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1510                 if (vout->mmap_count) {
1511                         ret = -EBUSY;
1512                         goto reqbuf_err;
1513                 }
1514                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1515                         video1_numbuffers : video2_numbuffers;
1516                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1517                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1518                                         vout->buffer_size);
1519                         vout->buf_virt_addr[i] = 0;
1520                         vout->buf_phy_addr[i] = 0;
1521                 }
1522                 vout->buffer_allocated = num_buffers;
1523                 videobuf_mmap_free(q);
1524         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1525                 if (vout->buffer_allocated) {
1526                         videobuf_mmap_free(q);
1527                         for (i = 0; i < vout->buffer_allocated; i++) {
1528                                 kfree(q->bufs[i]);
1529                                 q->bufs[i] = NULL;
1530                         }
1531                         vout->buffer_allocated = 0;
1532                 }
1533         }
1534
1535         /*store the memory type in data structure */
1536         vout->memory = req->memory;
1537
1538         INIT_LIST_HEAD(&vout->dma_queue);
1539
1540         /* call videobuf_reqbufs api */
1541         ret = videobuf_reqbufs(q, req);
1542         if (ret < 0)
1543                 goto reqbuf_err;
1544
1545         vout->buffer_allocated = req->count;
1546
1547 reqbuf_err:
1548         mutex_unlock(&vout->lock);
1549         return ret;
1550 }
1551
1552 static int vidioc_querybuf(struct file *file, void *fh,
1553                         struct v4l2_buffer *b)
1554 {
1555         struct omap_vout_device *vout = fh;
1556
1557         return videobuf_querybuf(&vout->vbq, b);
1558 }
1559
1560 static int vidioc_qbuf(struct file *file, void *fh,
1561                         struct v4l2_buffer *buffer)
1562 {
1563         struct omap_vout_device *vout = fh;
1564         struct videobuf_queue *q = &vout->vbq;
1565
1566         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1567                         (buffer->index >= vout->buffer_allocated) ||
1568                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1569                 return -EINVAL;
1570         }
1571         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1572                 if ((buffer->length < vout->pix.sizeimage) ||
1573                                 (0 == buffer->m.userptr)) {
1574                         return -EINVAL;
1575                 }
1576         }
1577
1578         if ((is_rotation_enabled(vout)) &&
1579                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1580                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1581                                 "DMA Channel not allocated for Rotation\n");
1582                 return -EINVAL;
1583         }
1584
1585         return videobuf_qbuf(q, buffer);
1586 }
1587
1588 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1589 {
1590         struct omap_vout_device *vout = fh;
1591         struct videobuf_queue *q = &vout->vbq;
1592
1593         int ret;
1594         u32 addr;
1595         unsigned long size;
1596         struct videobuf_buffer *vb;
1597
1598         vb = q->bufs[b->index];
1599
1600         if (!vout->streaming)
1601                 return -EINVAL;
1602
1603         if (file->f_flags & O_NONBLOCK)
1604                 /* Call videobuf_dqbuf for non blocking mode */
1605                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1606         else
1607                 /* Call videobuf_dqbuf for  blocking mode */
1608                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1609
1610         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1611         size = (unsigned long) vb->size;
1612         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1613                                 size, DMA_TO_DEVICE);
1614         return ret;
1615 }
1616
1617 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1618 {
1619         int ret = 0, j;
1620         u32 addr = 0, mask = 0;
1621         struct omap_vout_device *vout = fh;
1622         struct videobuf_queue *q = &vout->vbq;
1623         struct omapvideo_info *ovid = &vout->vid_info;
1624
1625         mutex_lock(&vout->lock);
1626
1627         if (vout->streaming) {
1628                 ret = -EBUSY;
1629                 goto streamon_err;
1630         }
1631
1632         ret = videobuf_streamon(q);
1633         if (ret)
1634                 goto streamon_err;
1635
1636         if (list_empty(&vout->dma_queue)) {
1637                 ret = -EIO;
1638                 goto streamon_err1;
1639         }
1640
1641         /* Get the next frame from the buffer queue */
1642         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1643                         struct videobuf_buffer, queue);
1644         /* Remove buffer from the buffer queue */
1645         list_del(&vout->cur_frm->queue);
1646         /* Mark state of the current frame to active */
1647         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1648         /* Initialize field_id and started member */
1649         vout->field_id = 0;
1650
1651         /* set flag here. Next QBUF will start DMA */
1652         vout->streaming = 1;
1653
1654         vout->first_int = 1;
1655
1656         if (omap_vout_calculate_offset(vout)) {
1657                 ret = -EINVAL;
1658                 goto streamon_err1;
1659         }
1660         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1661                 + vout->cropped_offset;
1662
1663         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1664                 | DISPC_IRQ_VSYNC2;
1665
1666         /* First save the configuration in ovelray structure */
1667         ret = omapvid_init(vout, addr);
1668         if (ret) {
1669                 v4l2_err(&vout->vid_dev->v4l2_dev,
1670                                 "failed to set overlay info\n");
1671                 goto streamon_err1;
1672         }
1673
1674         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1675
1676         /* Enable the pipeline and set the Go bit */
1677         ret = omapvid_apply_changes(vout);
1678         if (ret)
1679                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1680
1681         for (j = 0; j < ovid->num_overlays; j++) {
1682                 struct omap_overlay *ovl = ovid->overlays[j];
1683                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1684
1685                 if (dssdev) {
1686                         ret = ovl->enable(ovl);
1687                         if (ret)
1688                                 goto streamon_err1;
1689                 }
1690         }
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                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1721
1722                 if (dssdev)
1723                         ovl->disable(ovl);
1724         }
1725
1726         /* Turn of the pipeline */
1727         ret = omapvid_apply_changes(vout);
1728         if (ret)
1729                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1730                                 " streamoff\n");
1731
1732         INIT_LIST_HEAD(&vout->dma_queue);
1733         ret = videobuf_streamoff(&vout->vbq);
1734
1735         return ret;
1736 }
1737
1738 static int vidioc_s_fbuf(struct file *file, void *fh,
1739                                 const struct v4l2_framebuffer *a)
1740 {
1741         int enable = 0;
1742         struct omap_overlay *ovl;
1743         struct omapvideo_info *ovid;
1744         struct omap_vout_device *vout = fh;
1745         struct omap_overlay_manager_info info;
1746         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1747
1748         ovid = &vout->vid_info;
1749         ovl = ovid->overlays[0];
1750
1751         /* OMAP DSS doesn't support Source and Destination color
1752            key together */
1753         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1754                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1755                 return -EINVAL;
1756         /* OMAP DSS Doesn't support the Destination color key
1757            and alpha blending together */
1758         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1759                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1760                 return -EINVAL;
1761
1762         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1763                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1764                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1765         } else
1766                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1767
1768         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1769                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1770                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1771         } else
1772                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1773
1774         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1775                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1776                 enable = 1;
1777         else
1778                 enable = 0;
1779         if (ovl->manager && ovl->manager->get_manager_info &&
1780                         ovl->manager->set_manager_info) {
1781
1782                 ovl->manager->get_manager_info(ovl->manager, &info);
1783                 info.trans_enabled = enable;
1784                 info.trans_key_type = key_type;
1785                 info.trans_key = vout->win.chromakey;
1786
1787                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1788                         return -EINVAL;
1789         }
1790         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1791                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1792                 enable = 1;
1793         } else {
1794                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1795                 enable = 0;
1796         }
1797         if (ovl->manager && ovl->manager->get_manager_info &&
1798                         ovl->manager->set_manager_info) {
1799                 ovl->manager->get_manager_info(ovl->manager, &info);
1800                 /* enable this only if there is no zorder cap */
1801                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1802                         info.partial_alpha_enabled = enable;
1803                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1804                         return -EINVAL;
1805         }
1806
1807         return 0;
1808 }
1809
1810 static int vidioc_g_fbuf(struct file *file, void *fh,
1811                 struct v4l2_framebuffer *a)
1812 {
1813         struct omap_overlay *ovl;
1814         struct omapvideo_info *ovid;
1815         struct omap_vout_device *vout = fh;
1816         struct omap_overlay_manager_info info;
1817
1818         ovid = &vout->vid_info;
1819         ovl = ovid->overlays[0];
1820
1821         /* The video overlay must stay within the framebuffer and can't be
1822            positioned independently. */
1823         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1824         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1825                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1826
1827         if (ovl->manager && ovl->manager->get_manager_info) {
1828                 ovl->manager->get_manager_info(ovl->manager, &info);
1829                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1830                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1831                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1832                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1833         }
1834         if (ovl->manager && ovl->manager->get_manager_info) {
1835                 ovl->manager->get_manager_info(ovl->manager, &info);
1836                 if (info.partial_alpha_enabled)
1837                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1838         }
1839
1840         return 0;
1841 }
1842
1843 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1844         .vidioc_querycap                        = vidioc_querycap,
1845         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1846         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1847         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1848         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1849         .vidioc_queryctrl                       = vidioc_queryctrl,
1850         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1851         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1852         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1853         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1854         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1855         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1856         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1857         .vidioc_cropcap                         = vidioc_cropcap,
1858         .vidioc_g_crop                          = vidioc_g_crop,
1859         .vidioc_s_crop                          = vidioc_s_crop,
1860         .vidioc_reqbufs                         = vidioc_reqbufs,
1861         .vidioc_querybuf                        = vidioc_querybuf,
1862         .vidioc_qbuf                            = vidioc_qbuf,
1863         .vidioc_dqbuf                           = vidioc_dqbuf,
1864         .vidioc_streamon                        = vidioc_streamon,
1865         .vidioc_streamoff                       = vidioc_streamoff,
1866 };
1867
1868 static const struct v4l2_file_operations omap_vout_fops = {
1869         .owner          = THIS_MODULE,
1870         .poll           = omap_vout_poll,
1871         .unlocked_ioctl = video_ioctl2,
1872         .mmap           = omap_vout_mmap,
1873         .open           = omap_vout_open,
1874         .release        = omap_vout_release,
1875 };
1876
1877 /* Init functions used during driver initialization */
1878 /* Initial setup of video_data */
1879 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1880 {
1881         struct video_device *vfd;
1882         struct v4l2_pix_format *pix;
1883         struct v4l2_control *control;
1884         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1885         struct omap_dss_device *display = ovl->get_device(ovl);
1886
1887         /* set the default pix */
1888         pix = &vout->pix;
1889
1890         /* Set the default picture of QVGA  */
1891         pix->width = QQVGA_WIDTH;
1892         pix->height = QQVGA_HEIGHT;
1893
1894         /* Default pixel format is RGB 5-6-5 */
1895         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1896         pix->field = V4L2_FIELD_ANY;
1897         pix->bytesperline = pix->width * 2;
1898         pix->sizeimage = pix->bytesperline * pix->height;
1899         pix->priv = 0;
1900         pix->colorspace = V4L2_COLORSPACE_JPEG;
1901
1902         vout->bpp = RGB565_BPP;
1903         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1904         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1905
1906         /* Set the data structures for the overlay parameters*/
1907         vout->win.global_alpha = 255;
1908         vout->fbuf.flags = 0;
1909         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1910                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1911         vout->win.chromakey = 0;
1912
1913         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1914
1915         /*Initialize the control variables for
1916           rotation, flipping and background color. */
1917         control = vout->control;
1918         control[0].id = V4L2_CID_ROTATE;
1919         control[0].value = 0;
1920         vout->rotation = 0;
1921         vout->mirror = 0;
1922         vout->control[2].id = V4L2_CID_HFLIP;
1923         vout->control[2].value = 0;
1924         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1925                 vout->vrfb_bpp = 2;
1926
1927         control[1].id = V4L2_CID_BG_COLOR;
1928         control[1].value = 0;
1929
1930         /* initialize the video_device struct */
1931         vfd = vout->vfd = video_device_alloc();
1932
1933         if (!vfd) {
1934                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1935                                 " video device struct\n");
1936                 return -ENOMEM;
1937         }
1938         vfd->release = video_device_release;
1939         vfd->ioctl_ops = &vout_ioctl_ops;
1940
1941         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1942
1943         vfd->fops = &omap_vout_fops;
1944         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1945         vfd->vfl_dir = VFL_DIR_TX;
1946         mutex_init(&vout->lock);
1947
1948         vfd->minor = -1;
1949         return 0;
1950
1951 }
1952
1953 /* Setup video buffers */
1954 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1955                 int vid_num)
1956 {
1957         u32 numbuffers;
1958         int ret = 0, i;
1959         struct omapvideo_info *ovid;
1960         struct omap_vout_device *vout;
1961         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1962         struct omap2video_device *vid_dev =
1963                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1964
1965         vout = vid_dev->vouts[vid_num];
1966         ovid = &vout->vid_info;
1967
1968         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1969         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1970         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1971
1972         for (i = 0; i < numbuffers; i++) {
1973                 vout->buf_virt_addr[i] =
1974                         omap_vout_alloc_buffer(vout->buffer_size,
1975                                         (u32 *) &vout->buf_phy_addr[i]);
1976                 if (!vout->buf_virt_addr[i]) {
1977                         numbuffers = i;
1978                         ret = -ENOMEM;
1979                         goto free_buffers;
1980                 }
1981         }
1982
1983         vout->cropped_offset = 0;
1984
1985         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1986                 int static_vrfb_allocation = (vid_num == 0) ?
1987                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1988                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1989                                 static_vrfb_allocation);
1990         }
1991
1992         return ret;
1993
1994 free_buffers:
1995         for (i = 0; i < numbuffers; i++) {
1996                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1997                                                 vout->buffer_size);
1998                 vout->buf_virt_addr[i] = 0;
1999                 vout->buf_phy_addr[i] = 0;
2000         }
2001         return ret;
2002
2003 }
2004
2005 /* Create video out devices */
2006 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2007 {
2008         int ret = 0, k;
2009         struct omap_vout_device *vout;
2010         struct video_device *vfd = NULL;
2011         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2012         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2013                         struct omap2video_device, v4l2_dev);
2014
2015         for (k = 0; k < pdev->num_resources; k++) {
2016
2017                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2018                 if (!vout) {
2019                         dev_err(&pdev->dev, ": could not allocate memory\n");
2020                         return -ENOMEM;
2021                 }
2022
2023                 vout->vid = k;
2024                 vid_dev->vouts[k] = vout;
2025                 vout->vid_dev = vid_dev;
2026                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2027                 if (pdev->num_resources == 1)
2028                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2029                 else
2030                         /* Else select video1 and video2 one by one. */
2031                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2032                 vout->vid_info.num_overlays = 1;
2033                 vout->vid_info.id = k + 1;
2034
2035                 /* Set VRFB as rotation_type for omap2 and omap3 */
2036                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2037                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2038
2039                 /* Setup the default configuration for the video devices
2040                  */
2041                 if (omap_vout_setup_video_data(vout) != 0) {
2042                         ret = -ENOMEM;
2043                         goto error;
2044                 }
2045
2046                 /* Allocate default number of buffers for the video streaming
2047                  * and reserve the VRFB space for rotation
2048                  */
2049                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2050                         ret = -ENOMEM;
2051                         goto error1;
2052                 }
2053
2054                 /* Register the Video device with V4L2
2055                  */
2056                 vfd = vout->vfd;
2057                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2058                         dev_err(&pdev->dev, ": Could not register "
2059                                         "Video for Linux device\n");
2060                         vfd->minor = -1;
2061                         ret = -ENODEV;
2062                         goto error2;
2063                 }
2064                 video_set_drvdata(vfd, vout);
2065
2066                 dev_info(&pdev->dev, ": registered and initialized"
2067                                 " video device %d\n", vfd->minor);
2068                 if (k == (pdev->num_resources - 1))
2069                         return 0;
2070
2071                 continue;
2072 error2:
2073                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2074                         omap_vout_release_vrfb(vout);
2075                 omap_vout_free_buffers(vout);
2076 error1:
2077                 video_device_release(vfd);
2078 error:
2079                 kfree(vout);
2080                 return ret;
2081         }
2082
2083         return -ENODEV;
2084 }
2085 /* Driver functions */
2086 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2087 {
2088         struct video_device *vfd;
2089         struct omapvideo_info *ovid;
2090
2091         if (!vout)
2092                 return;
2093
2094         vfd = vout->vfd;
2095         ovid = &vout->vid_info;
2096         if (vfd) {
2097                 if (!video_is_registered(vfd)) {
2098                         /*
2099                          * The device was never registered, so release the
2100                          * video_device struct directly.
2101                          */
2102                         video_device_release(vfd);
2103                 } else {
2104                         /*
2105                          * The unregister function will release the video_device
2106                          * struct as well as unregistering it.
2107                          */
2108                         video_unregister_device(vfd);
2109                 }
2110         }
2111         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2112                 omap_vout_release_vrfb(vout);
2113                 /* Free the VRFB buffer if allocated
2114                  * init time
2115                  */
2116                 if (vout->vrfb_static_allocation)
2117                         omap_vout_free_vrfb_buffers(vout);
2118         }
2119         omap_vout_free_buffers(vout);
2120
2121         kfree(vout);
2122 }
2123
2124 static int omap_vout_remove(struct platform_device *pdev)
2125 {
2126         int k;
2127         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2128         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2129                         omap2video_device, v4l2_dev);
2130
2131         v4l2_device_unregister(v4l2_dev);
2132         for (k = 0; k < pdev->num_resources; k++)
2133                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2134
2135         for (k = 0; k < vid_dev->num_displays; k++) {
2136                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2137                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2138
2139                 omap_dss_put_device(vid_dev->displays[k]);
2140         }
2141         kfree(vid_dev);
2142         return 0;
2143 }
2144
2145 static int __init omap_vout_probe(struct platform_device *pdev)
2146 {
2147         int ret = 0, i;
2148         struct omap_overlay *ovl;
2149         struct omap_dss_device *dssdev = NULL;
2150         struct omap_dss_device *def_display;
2151         struct omap2video_device *vid_dev = NULL;
2152
2153         if (omapdss_is_initialized() == false)
2154                 return -EPROBE_DEFER;
2155
2156         ret = omapdss_compat_init();
2157         if (ret) {
2158                 dev_err(&pdev->dev, "failed to init dss\n");
2159                 return ret;
2160         }
2161
2162         if (pdev->num_resources == 0) {
2163                 dev_err(&pdev->dev, "probed for an unknown device\n");
2164                 ret = -ENODEV;
2165                 goto err_dss_init;
2166         }
2167
2168         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2169         if (vid_dev == NULL) {
2170                 ret = -ENOMEM;
2171                 goto err_dss_init;
2172         }
2173
2174         vid_dev->num_displays = 0;
2175         for_each_dss_dev(dssdev) {
2176                 omap_dss_get_device(dssdev);
2177
2178                 if (!dssdev->driver) {
2179                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2180                                         dssdev->name);
2181                         omap_dss_put_device(dssdev);
2182                         continue;
2183                 }
2184
2185                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2186         }
2187
2188         if (vid_dev->num_displays == 0) {
2189                 dev_err(&pdev->dev, "no displays\n");
2190                 ret = -EINVAL;
2191                 goto probe_err0;
2192         }
2193
2194         vid_dev->num_overlays = omap_dss_get_num_overlays();
2195         for (i = 0; i < vid_dev->num_overlays; i++)
2196                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2197
2198         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2199         for (i = 0; i < vid_dev->num_managers; i++)
2200                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2201
2202         /* Get the Video1 overlay and video2 overlay.
2203          * Setup the Display attached to that overlays
2204          */
2205         for (i = 1; i < vid_dev->num_overlays; i++) {
2206                 ovl = omap_dss_get_overlay(i);
2207                 dssdev = ovl->get_device(ovl);
2208
2209                 if (dssdev) {
2210                         def_display = dssdev;
2211                 } else {
2212                         dev_warn(&pdev->dev, "cannot find display\n");
2213                         def_display = NULL;
2214                 }
2215                 if (def_display) {
2216                         struct omap_dss_driver *dssdrv = def_display->driver;
2217
2218                         ret = dssdrv->enable(def_display);
2219                         if (ret) {
2220                                 /* Here we are not considering a error
2221                                  *  as display may be enabled by frame
2222                                  *  buffer driver
2223                                  */
2224                                 dev_warn(&pdev->dev,
2225                                         "'%s' Display already enabled\n",
2226                                         def_display->name);
2227                         }
2228                 }
2229         }
2230
2231         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2232                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2233                 ret = -ENODEV;
2234                 goto probe_err1;
2235         }
2236
2237         ret = omap_vout_create_video_devices(pdev);
2238         if (ret)
2239                 goto probe_err2;
2240
2241         for (i = 0; i < vid_dev->num_displays; i++) {
2242                 struct omap_dss_device *display = vid_dev->displays[i];
2243
2244                 if (display->driver->update)
2245                         display->driver->update(display, 0, 0,
2246                                         display->panel.timings.x_res,
2247                                         display->panel.timings.y_res);
2248         }
2249         return 0;
2250
2251 probe_err2:
2252         v4l2_device_unregister(&vid_dev->v4l2_dev);
2253 probe_err1:
2254         for (i = 1; i < vid_dev->num_overlays; i++) {
2255                 def_display = NULL;
2256                 ovl = omap_dss_get_overlay(i);
2257                 dssdev = ovl->get_device(ovl);
2258
2259                 if (dssdev)
2260                         def_display = dssdev;
2261
2262                 if (def_display && def_display->driver)
2263                         def_display->driver->disable(def_display);
2264         }
2265 probe_err0:
2266         kfree(vid_dev);
2267 err_dss_init:
2268         omapdss_compat_uninit();
2269         return ret;
2270 }
2271
2272 static struct platform_driver omap_vout_driver = {
2273         .driver = {
2274                 .name = VOUT_NAME,
2275         },
2276         .remove = omap_vout_remove,
2277 };
2278
2279 static int __init omap_vout_init(void)
2280 {
2281         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2282                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2283                 return -EINVAL;
2284         }
2285         return 0;
2286 }
2287
2288 static void omap_vout_cleanup(void)
2289 {
2290         platform_driver_unregister(&omap_vout_driver);
2291 }
2292
2293 late_initcall(omap_vout_init);
2294 module_exit(omap_vout_cleanup);