kernel/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
 169         switch (pix->pixelformat) {
 170         case V4L2_PIX_FMT_YUYV:
 171         case V4L2_PIX_FMT_UYVY:
 172         default:
 173                 pix->colorspace = V4L2_COLORSPACE_JPEG;
 174                 bpp = YUYV_BPP;
 175                 break;
 176         case V4L2_PIX_FMT_RGB565:
 177         case V4L2_PIX_FMT_RGB565X:
 178                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 179                 bpp = RGB565_BPP;
 180                 break;
 181         case V4L2_PIX_FMT_RGB24:
 182                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 183                 bpp = RGB24_BPP;
 184                 break;
 185         case V4L2_PIX_FMT_RGB32:
 186         case V4L2_PIX_FMT_BGR32:
 187                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 188                 bpp = RGB32_BPP;
 189                 break;
 190         }
 191         pix->bytesperline = pix->width * bpp;
 192         pix->sizeimage = pix->bytesperline * pix->height;
 193
 194         return bpp;
 195 }
 196
 197 /*
 198  * omap_vout_uservirt_to_phys: This inline function is used to convert user
 199  * space virtual address to physical address.
 200  */
 201 static unsigned long omap_vout_uservirt_to_phys(unsigned long virtp)
 202 {
 203         unsigned long physp = 0;
 204         struct vm_area_struct *vma;
 205         struct mm_struct *mm = current->mm;
 206
 207         /* For kernel direct-mapped memory, take the easy way */
 208         if (virtp >= PAGE_OFFSET)
 209                 return virt_to_phys((void *) virtp);
 210
 211         down_read(&current->mm->mmap_sem);
 212         vma = find_vma(mm, virtp);
 213         if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
 214                 /* this will catch, kernel-allocated, mmaped-to-usermode
 215                    addresses */
 216                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
 217                 up_read(&current->mm->mmap_sem);
 218         } else {
 219                 /* otherwise, use get_user_pages() for general userland pages */
 220                 int res, nr_pages = 1;
 221                 struct page *pages;
 222
 223                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
 224                                 0, &pages, NULL);
 225                 up_read(&current->mm->mmap_sem);
 226
 227                 if (res == nr_pages) {
 228                         physp =  __pa(page_address(&pages[0]) +
 229                                         (virtp & ~PAGE_MASK));
 230                 } else {
 231                         printk(KERN_WARNING VOUT_NAME
 232                                         "get_user_pages failed\n");
 233                         return 0;
 234                 }
 235         }
 236
 237         return physp;
 238 }
 239
 240 /*
 241  * Free the V4L2 buffers
 242  */
 243 void omap_vout_free_buffers(struct omap_vout_device *vout)
 244 {
 245         int i, numbuffers;
 246
 247         /* Allocate memory for the buffers */
 248         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
 249         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
 250
 251         for (i = 0; i < numbuffers; i++) {
 252                 omap_vout_free_buffer(vout->buf_virt_addr[i],
 253                                 vout->buffer_size);
 254                 vout->buf_phy_addr[i] = 0;
 255                 vout->buf_virt_addr[i] = 0;
 256         }
 257 }
 258
 259 /*
 260  * Convert V4L2 rotation to DSS rotation
 261  *      V4L2 understand 0, 90, 180, 270.
 262  *      Convert to 0, 1, 2 and 3 respectively for DSS
 263  */
 264 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
 265                         enum dss_rotation *rotation, bool mirror)
 266 {
 267         int ret = 0;
 268
 269         switch (v4l2_rotation) {
 270         case 90:
 271                 *rotation = dss_rotation_90_degree;
 272                 break;
 273         case 180:
 274                 *rotation = dss_rotation_180_degree;
 275                 break;
 276         case 270:
 277                 *rotation = dss_rotation_270_degree;
 278                 break;
 279         case 0:
 280                 *rotation = dss_rotation_0_degree;
 281                 break;
 282         default:
 283                 ret = -EINVAL;
 284         }
 285         return ret;
 286 }
 287
 288 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
 289 {
 290         struct omapvideo_info *ovid;
 291         struct v4l2_rect *crop = &vout->crop;
 292         struct v4l2_pix_format *pix = &vout->pix;
 293         int *cropped_offset = &vout->cropped_offset;
 294         int ps = 2, line_length = 0;
 295
 296         ovid = &vout->vid_info;
 297
 298         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 299                 omap_vout_calculate_vrfb_offset(vout);
 300         } else {
 301                 vout->line_length = line_length = pix->width;
 302
 303                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
 304                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
 305                         ps = 2;
 306                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
 307                         ps = 4;
 308                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
 309                         ps = 3;
 310
 311                 vout->ps = ps;
 312
 313                 *cropped_offset = (line_length * ps) *
 314                         crop->top + crop->left * ps;
 315         }
 316
 317         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
 318                         __func__, vout->cropped_offset);
 319
 320         return 0;
 321 }
 322
 323 /*
 324  * Convert V4L2 pixel format to DSS pixel format
 325  */
 326 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
 327 {
 328         struct omap_overlay *ovl;
 329         struct omapvideo_info *ovid;
 330         struct v4l2_pix_format *pix = &vout->pix;
 331         enum omap_color_mode mode;
 332
 333         ovid = &vout->vid_info;
 334         ovl = ovid->overlays[0];
 335
 336         switch (pix->pixelformat) {
 337         case V4L2_PIX_FMT_YUYV:
 338                 mode = OMAP_DSS_COLOR_YUV2;
 339                 break;
 340         case V4L2_PIX_FMT_UYVY:
 341                 mode = OMAP_DSS_COLOR_UYVY;
 342                 break;
 343         case V4L2_PIX_FMT_RGB565:
 344                 mode = OMAP_DSS_COLOR_RGB16;
 345                 break;
 346         case V4L2_PIX_FMT_RGB24:
 347                 mode = OMAP_DSS_COLOR_RGB24P;
 348                 break;
 349         case V4L2_PIX_FMT_RGB32:
 350                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
 351                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
 352                 break;
 353         case V4L2_PIX_FMT_BGR32:
 354                 mode = OMAP_DSS_COLOR_RGBX32;
 355                 break;
 356         default:
 357                 mode = -EINVAL;
 358                 break;
 359         }
 360         return mode;
 361 }
 362
 363 /*
 364  * Setup the overlay
 365  */
 366 static int omapvid_setup_overlay(struct omap_vout_device *vout,
 367                 struct omap_overlay *ovl, int posx, int posy, int outw,
 368                 int outh, u32 addr)
 369 {
 370         int ret = 0;
 371         struct omap_overlay_info info;
 372         int cropheight, cropwidth, pixwidth;
 373
 374         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
 375                         (outw != vout->pix.width || outh != vout->pix.height)) {
 376                 ret = -EINVAL;
 377                 goto setup_ovl_err;
 378         }
 379
 380         vout->dss_mode = video_mode_to_dss_mode(vout);
 381         if (vout->dss_mode == -EINVAL) {
 382                 ret = -EINVAL;
 383                 goto setup_ovl_err;
 384         }
 385
 386         /* Setup the input plane parameters according to
 387          * rotation value selected.
 388          */
 389         if (is_rotation_90_or_270(vout)) {
 390                 cropheight = vout->crop.width;
 391                 cropwidth = vout->crop.height;
 392                 pixwidth = vout->pix.height;
 393         } else {
 394                 cropheight = vout->crop.height;
 395                 cropwidth = vout->crop.width;
 396                 pixwidth = vout->pix.width;
 397         }
 398
 399         ovl->get_overlay_info(ovl, &info);
 400         info.paddr = addr;
 401         info.width = cropwidth;
 402         info.height = cropheight;
 403         info.color_mode = vout->dss_mode;
 404         info.mirror = vout->mirror;
 405         info.pos_x = posx;
 406         info.pos_y = posy;
 407         info.out_width = outw;
 408         info.out_height = outh;
 409         info.global_alpha = vout->win.global_alpha;
 410         if (!is_rotation_enabled(vout)) {
 411                 info.rotation = 0;
 412                 info.rotation_type = OMAP_DSS_ROT_DMA;
 413                 info.screen_width = pixwidth;
 414         } else {
 415                 info.rotation = vout->rotation;
 416                 info.rotation_type = OMAP_DSS_ROT_VRFB;
 417                 info.screen_width = 2048;
 418         }
 419
 420         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 421                 "%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
 422                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
 423                 "out_height=%d rotation_type=%d screen_width=%d\n",
 424                 __func__, ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
 425                 info.color_mode, info.rotation, info.mirror, info.pos_x,
 426                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
 427                 info.screen_width);
 428
 429         ret = ovl->set_overlay_info(ovl, &info);
 430         if (ret)
 431                 goto setup_ovl_err;
 432
 433         return 0;
 434
 435 setup_ovl_err:
 436         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
 437         return ret;
 438 }
 439
 440 /*
 441  * Initialize the overlay structure
 442  */
 443 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
 444 {
 445         int ret = 0, i;
 446         struct v4l2_window *win;
 447         struct omap_overlay *ovl;
 448         int posx, posy, outw, outh, temp;
 449         struct omap_video_timings *timing;
 450         struct omapvideo_info *ovid = &vout->vid_info;
 451
 452         win = &vout->win;
 453         for (i = 0; i < ovid->num_overlays; i++) {
 454                 struct omap_dss_device *dssdev;
 455
 456                 ovl = ovid->overlays[i];
 457                 dssdev = ovl->get_device(ovl);
 458
 459                 if (!dssdev)
 460                         return -EINVAL;
 461
 462                 timing = &dssdev->panel.timings;
 463
 464                 outw = win->w.width;
 465                 outh = win->w.height;
 466                 switch (vout->rotation) {
 467                 case dss_rotation_90_degree:
 468                         /* Invert the height and width for 90
 469                          * and 270 degree rotation
 470                          */
 471                         temp = outw;
 472                         outw = outh;
 473                         outh = temp;
 474                         posy = (timing->y_res - win->w.width) - win->w.left;
 475                         posx = win->w.top;
 476                         break;
 477
 478                 case dss_rotation_180_degree:
 479                         posx = (timing->x_res - win->w.width) - win->w.left;
 480                         posy = (timing->y_res - win->w.height) - win->w.top;
 481                         break;
 482
 483                 case dss_rotation_270_degree:
 484                         temp = outw;
 485                         outw = outh;
 486                         outh = temp;
 487                         posy = win->w.left;
 488                         posx = (timing->x_res - win->w.height) - win->w.top;
 489                         break;
 490
 491                 default:
 492                         posx = win->w.left;
 493                         posy = win->w.top;
 494                         break;
 495                 }
 496
 497                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
 498                                 outw, outh, addr);
 499                 if (ret)
 500                         goto omapvid_init_err;
 501         }
 502         return 0;
 503
 504 omapvid_init_err:
 505         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
 506         return ret;
 507 }
 508
 509 /*
 510  * Apply the changes set the go bit of DSS
 511  */
 512 static int omapvid_apply_changes(struct omap_vout_device *vout)
 513 {
 514         int i;
 515         struct omap_overlay *ovl;
 516         struct omapvideo_info *ovid = &vout->vid_info;
 517
 518         for (i = 0; i < ovid->num_overlays; i++) {
 519                 struct omap_dss_device *dssdev;
 520
 521                 ovl = ovid->overlays[i];
 522                 dssdev = ovl->get_device(ovl);
 523                 if (!dssdev)
 524                         return -EINVAL;
 525                 ovl->manager->apply(ovl->manager);
 526         }
 527
 528         return 0;
 529 }
 530
 531 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
 532                 unsigned int irqstatus, struct timeval timevalue)
 533 {
 534         u32 fid;
 535
 536         if (vout->first_int) {
 537                 vout->first_int = 0;
 538                 goto err;
 539         }
 540
 541         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
 542                 fid = 1;
 543         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
 544                 fid = 0;
 545         else
 546                 goto err;
 547
 548         vout->field_id ^= 1;
 549         if (fid != vout->field_id) {
 550                 if (fid == 0)
 551                         vout->field_id = fid;
 552         } else if (0 == fid) {
 553                 if (vout->cur_frm == vout->next_frm)
 554                         goto err;
 555
 556                 vout->cur_frm->ts = timevalue;
 557                 vout->cur_frm->state = VIDEOBUF_DONE;
 558                 wake_up_interruptible(&vout->cur_frm->done);
 559                 vout->cur_frm = vout->next_frm;
 560         } else {
 561                 if (list_empty(&vout->dma_queue) ||
 562                                 (vout->cur_frm != vout->next_frm))
 563                         goto err;
 564         }
 565
 566         return vout->field_id;
 567 err:
 568         return 0;
 569 }
 570
 571 static void omap_vout_isr(void *arg, unsigned int irqstatus)
 572 {
 573         int ret, fid, mgr_id;
 574         u32 addr, irq;
 575         struct omap_overlay *ovl;
 576         struct timeval timevalue;
 577         struct omapvideo_info *ovid;
 578         struct omap_dss_device *cur_display;
 579         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
 580
 581         if (!vout->streaming)
 582                 return;
 583
 584         ovid = &vout->vid_info;
 585         ovl = ovid->overlays[0];
 586
 587         mgr_id = ovl->manager->id;
 588
 589         /* get the display device attached to the overlay */
 590         cur_display = ovl->get_device(ovl);
 591
 592         if (!cur_display)
 593                 return;
 594
 595         spin_lock(&vout->vbq_lock);
 596         v4l2_get_timestamp(&timevalue);
 597
 598         switch (cur_display->type) {
 599         case OMAP_DISPLAY_TYPE_DSI:
 600         case OMAP_DISPLAY_TYPE_DPI:
 601         case OMAP_DISPLAY_TYPE_DVI:
 602                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
 603                         irq = DISPC_IRQ_VSYNC;
 604                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
 605                         irq = DISPC_IRQ_VSYNC2;
 606                 else
 607                         goto vout_isr_err;
 608
 609                 if (!(irqstatus & irq))
 610                         goto vout_isr_err;
 611                 break;
 612         case OMAP_DISPLAY_TYPE_VENC:
 613                 fid = omapvid_handle_interlace_display(vout, irqstatus,
 614                                 timevalue);
 615                 if (!fid)
 616                         goto vout_isr_err;
 617                 break;
 618         case OMAP_DISPLAY_TYPE_HDMI:
 619                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
 620                         goto vout_isr_err;
 621                 break;
 622         default:
 623                 goto vout_isr_err;
 624         }
 625
 626         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
 627                 vout->cur_frm->ts = timevalue;
 628                 vout->cur_frm->state = VIDEOBUF_DONE;
 629                 wake_up_interruptible(&vout->cur_frm->done);
 630                 vout->cur_frm = vout->next_frm;
 631         }
 632
 633         vout->first_int = 0;
 634         if (list_empty(&vout->dma_queue))
 635                 goto vout_isr_err;
 636
 637         vout->next_frm = list_entry(vout->dma_queue.next,
 638                         struct videobuf_buffer, queue);
 639         list_del(&vout->next_frm->queue);
 640
 641         vout->next_frm->state = VIDEOBUF_ACTIVE;
 642
 643         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
 644                 + vout->cropped_offset;
 645
 646         /* First save the configuration in ovelray structure */
 647         ret = omapvid_init(vout, addr);
 648         if (ret) {
 649                 printk(KERN_ERR VOUT_NAME
 650                         "failed to set overlay info\n");
 651                 goto vout_isr_err;
 652         }
 653
 654         /* Enable the pipeline and set the Go bit */
 655         ret = omapvid_apply_changes(vout);
 656         if (ret)
 657                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
 658
 659 vout_isr_err:
 660         spin_unlock(&vout->vbq_lock);
 661 }
 662
 663 /* Video buffer call backs */
 664
 665 /*
 666  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
 667  * called. This is used to setup buffers and return size and count of
 668  * buffers allocated. After the call to this buffer, videobuf layer will
 669  * setup buffer queue depending on the size and count of buffers
 670  */
 671 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 672                           unsigned int *size)
 673 {
 674         int startindex = 0, i, j;
 675         u32 phy_addr = 0, virt_addr = 0;
 676         struct omap_vout_device *vout = q->priv_data;
 677         struct omapvideo_info *ovid = &vout->vid_info;
 678         int vid_max_buf_size;
 679
 680         if (!vout)
 681                 return -EINVAL;
 682
 683         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
 684                 video2_bufsize;
 685
 686         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
 687                 return -EINVAL;
 688
 689         startindex = (vout->vid == OMAP_VIDEO1) ?
 690                 video1_numbuffers : video2_numbuffers;
 691         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
 692                 *count = startindex;
 693
 694         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 695                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
 696                         return -ENOMEM;
 697         }
 698
 699         if (V4L2_MEMORY_MMAP != vout->memory)
 700                 return 0;
 701
 702         /* Now allocated the V4L2 buffers */
 703         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
 704         startindex = (vout->vid == OMAP_VIDEO1) ?
 705                 video1_numbuffers : video2_numbuffers;
 706
 707         /* Check the size of the buffer */
 708         if (*size > vid_max_buf_size) {
 709                 v4l2_err(&vout->vid_dev->v4l2_dev,
 710                                 "buffer allocation mismatch [%u] [%u]\n",
 711                                 *size, vout->buffer_size);
 712                 return -ENOMEM;
 713         }
 714
 715         for (i = startindex; i < *count; i++) {
 716                 vout->buffer_size = *size;
 717
 718                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
 719                                 &phy_addr);
 720                 if (!virt_addr) {
 721                         if (ovid->rotation_type == VOUT_ROT_NONE) {
 722                                 break;
 723                         } else {
 724                                 if (!is_rotation_enabled(vout))
 725                                         break;
 726                         /* Free the VRFB buffers if no space for V4L2 buffers */
 727                         for (j = i; j < *count; j++) {
 728                                 omap_vout_free_buffer(
 729                                                 vout->smsshado_virt_addr[j],
 730                                                 vout->smsshado_size);
 731                                 vout->smsshado_virt_addr[j] = 0;
 732                                 vout->smsshado_phy_addr[j] = 0;
 733                                 }
 734                         }
 735                 }
 736                 vout->buf_virt_addr[i] = virt_addr;
 737                 vout->buf_phy_addr[i] = phy_addr;
 738         }
 739         *count = vout->buffer_allocated = i;
 740
 741         return 0;
 742 }
 743
 744 /*
 745  * Free the V4L2 buffers additionally allocated than default
 746  * number of buffers
 747  */
 748 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
 749 {
 750         int num_buffers = 0, i;
 751
 752         num_buffers = (vout->vid == OMAP_VIDEO1) ?
 753                 video1_numbuffers : video2_numbuffers;
 754
 755         for (i = num_buffers; i < vout->buffer_allocated; i++) {
 756                 if (vout->buf_virt_addr[i])
 757                         omap_vout_free_buffer(vout->buf_virt_addr[i],
 758                                         vout->buffer_size);
 759
 760                 vout->buf_virt_addr[i] = 0;
 761                 vout->buf_phy_addr[i] = 0;
 762         }
 763         vout->buffer_allocated = num_buffers;
 764 }
 765
 766 /*
 767  * This function will be called when VIDIOC_QBUF ioctl is called.
 768  * It prepare buffers before give out for the display. This function
 769  * converts user space virtual address into physical address if userptr memory
 770  * exchange mechanism is used. If rotation is enabled, it copies entire
 771  * buffer into VRFB memory space before giving it to the DSS.
 772  */
 773 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
 774                         struct videobuf_buffer *vb,
 775                         enum v4l2_field field)
 776 {
 777         struct omap_vout_device *vout = q->priv_data;
 778         struct omapvideo_info *ovid = &vout->vid_info;
 779
 780         if (VIDEOBUF_NEEDS_INIT == vb->state) {
 781                 vb->width = vout->pix.width;
 782                 vb->height = vout->pix.height;
 783                 vb->size = vb->width * vb->height * vout->bpp;
 784                 vb->field = field;
 785         }
 786         vb->state = VIDEOBUF_PREPARED;
 787         /* if user pointer memory mechanism is used, get the physical
 788          * address of the buffer
 789          */
 790         if (V4L2_MEMORY_USERPTR == vb->memory) {
 791                 if (0 == vb->baddr)
 792                         return -EINVAL;
 793                 /* Physical address */
 794                 vout->queued_buf_addr[vb->i] = (u8 *)
 795                         omap_vout_uservirt_to_phys(vb->baddr);
 796         } else {
 797                 unsigned long addr, dma_addr;
 798                 unsigned long size;
 799
 800                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
 801                 size = (unsigned long) vb->size;
 802
 803                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
 804                                 size, DMA_TO_DEVICE);
 805                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
 806                         v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
 807
 808                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
 809         }
 810
 811         if (ovid->rotation_type == VOUT_ROT_VRFB)
 812                 return omap_vout_prepare_vrfb(vout, vb);
 813         else
 814                 return 0;
 815 }
 816
 817 /*
 818  * Buffer queue function will be called from the videobuf layer when _QBUF
 819  * ioctl is called. It is used to enqueue buffer, which is ready to be
 820  * displayed.
 821  */
 822 static void omap_vout_buffer_queue(struct videobuf_queue *q,
 823                           struct videobuf_buffer *vb)
 824 {
 825         struct omap_vout_device *vout = q->priv_data;
 826
 827         /* Driver is also maintainig a queue. So enqueue buffer in the driver
 828          * queue */
 829         list_add_tail(&vb->queue, &vout->dma_queue);
 830
 831         vb->state = VIDEOBUF_QUEUED;
 832 }
 833
 834 /*
 835  * Buffer release function is called from videobuf layer to release buffer
 836  * which are already allocated
 837  */
 838 static void omap_vout_buffer_release(struct videobuf_queue *q,
 839                             struct videobuf_buffer *vb)
 840 {
 841         struct omap_vout_device *vout = q->priv_data;
 842
 843         vb->state = VIDEOBUF_NEEDS_INIT;
 844
 845         if (V4L2_MEMORY_MMAP != vout->memory)
 846                 return;
 847 }
 848
 849 /*
 850  *  File operations
 851  */
 852 static unsigned int omap_vout_poll(struct file *file,
 853                                    struct poll_table_struct *wait)
 854 {
 855         struct omap_vout_device *vout = file->private_data;
 856         struct videobuf_queue *q = &vout->vbq;
 857
 858         return videobuf_poll_stream(file, q, wait);
 859 }
 860
 861 static void omap_vout_vm_open(struct vm_area_struct *vma)
 862 {
 863         struct omap_vout_device *vout = vma->vm_private_data;
 864
 865         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 866                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 867         vout->mmap_count++;
 868 }
 869
 870 static void omap_vout_vm_close(struct vm_area_struct *vma)
 871 {
 872         struct omap_vout_device *vout = vma->vm_private_data;
 873
 874         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 875                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 876         vout->mmap_count--;
 877 }
 878
 879 static struct vm_operations_struct omap_vout_vm_ops = {
 880         .open   = omap_vout_vm_open,
 881         .close  = omap_vout_vm_close,
 882 };
 883
 884 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
 885 {
 886         int i;
 887         void *pos;
 888         unsigned long start = vma->vm_start;
 889         unsigned long size = (vma->vm_end - vma->vm_start);
 890         struct omap_vout_device *vout = file->private_data;
 891         struct videobuf_queue *q = &vout->vbq;
 892
 893         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 894                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
 895                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
 896
 897         /* look for the buffer to map */
 898         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
 899                 if (NULL == q->bufs[i])
 900                         continue;
 901                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
 902                         continue;
 903                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
 904                         break;
 905         }
 906
 907         if (VIDEO_MAX_FRAME == i) {
 908                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 909                                 "offset invalid [offset=0x%lx]\n",
 910                                 (vma->vm_pgoff << PAGE_SHIFT));
 911                 return -EINVAL;
 912         }
 913         /* Check the size of the buffer */
 914         if (size > vout->buffer_size) {
 915                 v4l2_err(&vout->vid_dev->v4l2_dev,
 916                                 "insufficient memory [%lu] [%u]\n",
 917                                 size, vout->buffer_size);
 918                 return -ENOMEM;
 919         }
 920
 921         q->bufs[i]->baddr = vma->vm_start;
 922
 923         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 924         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 925         vma->vm_ops = &omap_vout_vm_ops;
 926         vma->vm_private_data = (void *) vout;
 927         pos = (void *)vout->buf_virt_addr[i];
 928         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
 929         while (size > 0) {
 930                 unsigned long pfn;
 931                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
 932                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
 933                         return -EAGAIN;
 934                 start += PAGE_SIZE;
 935                 pos += PAGE_SIZE;
 936                 size -= PAGE_SIZE;
 937         }
 938         vout->mmap_count++;
 939         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 940
 941         return 0;
 942 }
 943
 944 static int omap_vout_release(struct file *file)
 945 {
 946         unsigned int ret, i;
 947         struct videobuf_queue *q;
 948         struct omapvideo_info *ovid;
 949         struct omap_vout_device *vout = file->private_data;
 950
 951         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
 952         ovid = &vout->vid_info;
 953
 954         if (!vout)
 955                 return 0;
 956
 957         q = &vout->vbq;
 958         /* Disable all the overlay managers connected with this interface */
 959         for (i = 0; i < ovid->num_overlays; i++) {
 960                 struct omap_overlay *ovl = ovid->overlays[i];
 961                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
 962
 963                 if (dssdev)
 964                         ovl->disable(ovl);
 965         }
 966         /* Turn off the pipeline */
 967         ret = omapvid_apply_changes(vout);
 968         if (ret)
 969                 v4l2_warn(&vout->vid_dev->v4l2_dev,
 970                                 "Unable to apply changes\n");
 971
 972         /* Free all buffers */
 973         omap_vout_free_extra_buffers(vout);
 974
 975         /* Free the VRFB buffers only if they are allocated
 976          * during reqbufs.  Don't free if init time allocated
 977          */
 978         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 979                 if (!vout->vrfb_static_allocation)
 980                         omap_vout_free_vrfb_buffers(vout);
 981         }
 982         videobuf_mmap_free(q);
 983
 984         /* Even if apply changes fails we should continue
 985            freeing allocated memory */
 986         if (vout->streaming) {
 987                 u32 mask = 0;
 988
 989                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
 990                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
 991                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
 992                 vout->streaming = false;
 993
 994                 videobuf_streamoff(q);
 995                 videobuf_queue_cancel(q);
 996         }
 997
 998         if (vout->mmap_count != 0)
 999                 vout->mmap_count = 0;
1000
1001         vout->opened -= 1;
1002         file->private_data = NULL;
1003
1004         if (vout->buffer_allocated)
1005                 videobuf_mmap_free(q);
1006
1007         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1008         return ret;
1009 }
1010
1011 static int omap_vout_open(struct file *file)
1012 {
1013         struct videobuf_queue *q;
1014         struct omap_vout_device *vout = NULL;
1015
1016         vout = video_drvdata(file);
1017         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1018
1019         if (vout == NULL)
1020                 return -ENODEV;
1021
1022         /* for now, we only support single open */
1023         if (vout->opened)
1024                 return -EBUSY;
1025
1026         vout->opened += 1;
1027
1028         file->private_data = vout;
1029         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1030
1031         q = &vout->vbq;
1032         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1033         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1034         video_vbq_ops.buf_release = omap_vout_buffer_release;
1035         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1036         spin_lock_init(&vout->vbq_lock);
1037
1038         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1039                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1040                         sizeof(struct videobuf_buffer), vout, NULL);
1041
1042         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1043         return 0;
1044 }
1045
1046 /*
1047  * V4L2 ioctls
1048  */
1049 static int vidioc_querycap(struct file *file, void *fh,
1050                 struct v4l2_capability *cap)
1051 {
1052         struct omap_vout_device *vout = fh;
1053
1054         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1055         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1056         cap->bus_info[0] = '\0';
1057         cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1058                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1059         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1060
1061         return 0;
1062 }
1063
1064 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1065                         struct v4l2_fmtdesc *fmt)
1066 {
1067         int index = fmt->index;
1068
1069         if (index >= NUM_OUTPUT_FORMATS)
1070                 return -EINVAL;
1071
1072         fmt->flags = omap_formats[index].flags;
1073         strlcpy(fmt->description, omap_formats[index].description,
1074                         sizeof(fmt->description));
1075         fmt->pixelformat = omap_formats[index].pixelformat;
1076
1077         return 0;
1078 }
1079
1080 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1081                         struct v4l2_format *f)
1082 {
1083         struct omap_vout_device *vout = fh;
1084
1085         f->fmt.pix = vout->pix;
1086         return 0;
1087
1088 }
1089
1090 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1091                         struct v4l2_format *f)
1092 {
1093         struct omap_overlay *ovl;
1094         struct omapvideo_info *ovid;
1095         struct omap_video_timings *timing;
1096         struct omap_vout_device *vout = fh;
1097         struct omap_dss_device *dssdev;
1098
1099         ovid = &vout->vid_info;
1100         ovl = ovid->overlays[0];
1101         /* get the display device attached to the overlay */
1102         dssdev = ovl->get_device(ovl);
1103
1104         if (!dssdev)
1105                 return -EINVAL;
1106
1107         timing = &dssdev->panel.timings;
1108
1109         vout->fbuf.fmt.height = timing->y_res;
1110         vout->fbuf.fmt.width = timing->x_res;
1111
1112         omap_vout_try_format(&f->fmt.pix);
1113         return 0;
1114 }
1115
1116 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1117                         struct v4l2_format *f)
1118 {
1119         int ret, bpp;
1120         struct omap_overlay *ovl;
1121         struct omapvideo_info *ovid;
1122         struct omap_video_timings *timing;
1123         struct omap_vout_device *vout = fh;
1124         struct omap_dss_device *dssdev;
1125
1126         if (vout->streaming)
1127                 return -EBUSY;
1128
1129         mutex_lock(&vout->lock);
1130
1131         ovid = &vout->vid_info;
1132         ovl = ovid->overlays[0];
1133         dssdev = ovl->get_device(ovl);
1134
1135         /* get the display device attached to the overlay */
1136         if (!dssdev) {
1137                 ret = -EINVAL;
1138                 goto s_fmt_vid_out_exit;
1139         }
1140         timing = &dssdev->panel.timings;
1141
1142         /* We dont support RGB24-packed mode if vrfb rotation
1143          * is enabled*/
1144         if ((is_rotation_enabled(vout)) &&
1145                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1146                 ret = -EINVAL;
1147                 goto s_fmt_vid_out_exit;
1148         }
1149
1150         /* get the framebuffer parameters */
1151
1152         if (is_rotation_90_or_270(vout)) {
1153                 vout->fbuf.fmt.height = timing->x_res;
1154                 vout->fbuf.fmt.width = timing->y_res;
1155         } else {
1156                 vout->fbuf.fmt.height = timing->y_res;
1157                 vout->fbuf.fmt.width = timing->x_res;
1158         }
1159
1160         /* change to samller size is OK */
1161
1162         bpp = omap_vout_try_format(&f->fmt.pix);
1163         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1164
1165         /* try & set the new output format */
1166         vout->bpp = bpp;
1167         vout->pix = f->fmt.pix;
1168         vout->vrfb_bpp = 1;
1169
1170         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1171         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1172                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1173                 vout->vrfb_bpp = 2;
1174
1175         /* set default crop and win */
1176         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1177
1178         ret = 0;
1179
1180 s_fmt_vid_out_exit:
1181         mutex_unlock(&vout->lock);
1182         return ret;
1183 }
1184
1185 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1186                         struct v4l2_format *f)
1187 {
1188         int ret = 0;
1189         struct omap_vout_device *vout = fh;
1190         struct omap_overlay *ovl;
1191         struct omapvideo_info *ovid;
1192         struct v4l2_window *win = &f->fmt.win;
1193
1194         ovid = &vout->vid_info;
1195         ovl = ovid->overlays[0];
1196
1197         ret = omap_vout_try_window(&vout->fbuf, win);
1198
1199         if (!ret) {
1200                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1201                         win->global_alpha = 255;
1202                 else
1203                         win->global_alpha = f->fmt.win.global_alpha;
1204         }
1205
1206         return ret;
1207 }
1208
1209 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1210                         struct v4l2_format *f)
1211 {
1212         int ret = 0;
1213         struct omap_overlay *ovl;
1214         struct omapvideo_info *ovid;
1215         struct omap_vout_device *vout = fh;
1216         struct v4l2_window *win = &f->fmt.win;
1217
1218         mutex_lock(&vout->lock);
1219         ovid = &vout->vid_info;
1220         ovl = ovid->overlays[0];
1221
1222         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1223         if (!ret) {
1224                 /* Video1 plane does not support global alpha on OMAP3 */
1225                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1226                         vout->win.global_alpha = 255;
1227                 else
1228                         vout->win.global_alpha = f->fmt.win.global_alpha;
1229
1230                 vout->win.chromakey = f->fmt.win.chromakey;
1231         }
1232         mutex_unlock(&vout->lock);
1233         return ret;
1234 }
1235
1236 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1237                         struct v4l2_format *f)
1238 {
1239         u32 key_value =  0;
1240         struct omap_overlay *ovl;
1241         struct omapvideo_info *ovid;
1242         struct omap_vout_device *vout = fh;
1243         struct omap_overlay_manager_info info;
1244         struct v4l2_window *win = &f->fmt.win;
1245
1246         ovid = &vout->vid_info;
1247         ovl = ovid->overlays[0];
1248
1249         win->w = vout->win.w;
1250         win->field = vout->win.field;
1251         win->global_alpha = vout->win.global_alpha;
1252
1253         if (ovl->manager && ovl->manager->get_manager_info) {
1254                 ovl->manager->get_manager_info(ovl->manager, &info);
1255                 key_value = info.trans_key;
1256         }
1257         win->chromakey = key_value;
1258         return 0;
1259 }
1260
1261 static int vidioc_cropcap(struct file *file, void *fh,
1262                 struct v4l2_cropcap *cropcap)
1263 {
1264         struct omap_vout_device *vout = fh;
1265         struct v4l2_pix_format *pix = &vout->pix;
1266
1267         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1268                 return -EINVAL;
1269
1270         /* Width and height are always even */
1271         cropcap->bounds.width = pix->width & ~1;
1272         cropcap->bounds.height = pix->height & ~1;
1273
1274         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1275         cropcap->pixelaspect.numerator = 1;
1276         cropcap->pixelaspect.denominator = 1;
1277         return 0;
1278 }
1279
1280 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1281 {
1282         struct omap_vout_device *vout = fh;
1283
1284         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1285                 return -EINVAL;
1286         crop->c = vout->crop;
1287         return 0;
1288 }
1289
1290 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1291 {
1292         int ret = -EINVAL;
1293         struct omap_vout_device *vout = fh;
1294         struct omapvideo_info *ovid;
1295         struct omap_overlay *ovl;
1296         struct omap_video_timings *timing;
1297         struct omap_dss_device *dssdev;
1298
1299         if (vout->streaming)
1300                 return -EBUSY;
1301
1302         mutex_lock(&vout->lock);
1303         ovid = &vout->vid_info;
1304         ovl = ovid->overlays[0];
1305         /* get the display device attached to the overlay */
1306         dssdev = ovl->get_device(ovl);
1307
1308         if (!dssdev) {
1309                 ret = -EINVAL;
1310                 goto s_crop_err;
1311         }
1312
1313         timing = &dssdev->panel.timings;
1314
1315         if (is_rotation_90_or_270(vout)) {
1316                 vout->fbuf.fmt.height = timing->x_res;
1317                 vout->fbuf.fmt.width = timing->y_res;
1318         } else {
1319                 vout->fbuf.fmt.height = timing->y_res;
1320                 vout->fbuf.fmt.width = timing->x_res;
1321         }
1322
1323         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1324                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1325                                 &vout->fbuf, &crop->c);
1326
1327 s_crop_err:
1328         mutex_unlock(&vout->lock);
1329         return ret;
1330 }
1331
1332 static int vidioc_queryctrl(struct file *file, void *fh,
1333                 struct v4l2_queryctrl *ctrl)
1334 {
1335         int ret = 0;
1336
1337         switch (ctrl->id) {
1338         case V4L2_CID_ROTATE:
1339                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1340                 break;
1341         case V4L2_CID_BG_COLOR:
1342                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1343                 break;
1344         case V4L2_CID_VFLIP:
1345                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1346                 break;
1347         default:
1348                 ctrl->name[0] = '\0';
1349                 ret = -EINVAL;
1350         }
1351         return ret;
1352 }
1353
1354 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1355 {
1356         int ret = 0;
1357         struct omap_vout_device *vout = fh;
1358
1359         switch (ctrl->id) {
1360         case V4L2_CID_ROTATE:
1361                 ctrl->value = vout->control[0].value;
1362                 break;
1363         case V4L2_CID_BG_COLOR:
1364         {
1365                 struct omap_overlay_manager_info info;
1366                 struct omap_overlay *ovl;
1367
1368                 ovl = vout->vid_info.overlays[0];
1369                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1370                         ret = -EINVAL;
1371                         break;
1372                 }
1373
1374                 ovl->manager->get_manager_info(ovl->manager, &info);
1375                 ctrl->value = info.default_color;
1376                 break;
1377         }
1378         case V4L2_CID_VFLIP:
1379                 ctrl->value = vout->control[2].value;
1380                 break;
1381         default:
1382                 ret = -EINVAL;
1383         }
1384         return ret;
1385 }
1386
1387 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1388 {
1389         int ret = 0;
1390         struct omap_vout_device *vout = fh;
1391
1392         switch (a->id) {
1393         case V4L2_CID_ROTATE:
1394         {
1395                 struct omapvideo_info *ovid;
1396                 int rotation = a->value;
1397
1398                 ovid = &vout->vid_info;
1399
1400                 mutex_lock(&vout->lock);
1401                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1402                         mutex_unlock(&vout->lock);
1403                         ret = -ERANGE;
1404                         break;
1405                 }
1406
1407                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1408                         mutex_unlock(&vout->lock);
1409                         ret = -EINVAL;
1410                         break;
1411                 }
1412
1413                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1414                                                         vout->mirror)) {
1415                         mutex_unlock(&vout->lock);
1416                         ret = -EINVAL;
1417                         break;
1418                 }
1419
1420                 vout->control[0].value = rotation;
1421                 mutex_unlock(&vout->lock);
1422                 break;
1423         }
1424         case V4L2_CID_BG_COLOR:
1425         {
1426                 struct omap_overlay *ovl;
1427                 unsigned int  color = a->value;
1428                 struct omap_overlay_manager_info info;
1429
1430                 ovl = vout->vid_info.overlays[0];
1431
1432                 mutex_lock(&vout->lock);
1433                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1434                         mutex_unlock(&vout->lock);
1435                         ret = -EINVAL;
1436                         break;
1437                 }
1438
1439                 ovl->manager->get_manager_info(ovl->manager, &info);
1440                 info.default_color = color;
1441                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1442                         mutex_unlock(&vout->lock);
1443                         ret = -EINVAL;
1444                         break;
1445                 }
1446
1447                 vout->control[1].value = color;
1448                 mutex_unlock(&vout->lock);
1449                 break;
1450         }
1451         case V4L2_CID_VFLIP:
1452         {
1453                 struct omapvideo_info *ovid;
1454                 unsigned int  mirror = a->value;
1455
1456                 ovid = &vout->vid_info;
1457
1458                 mutex_lock(&vout->lock);
1459                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1460                         mutex_unlock(&vout->lock);
1461                         ret = -ERANGE;
1462                         break;
1463                 }
1464
1465                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1466                         mutex_unlock(&vout->lock);
1467                         ret = -EINVAL;
1468                         break;
1469                 }
1470                 vout->mirror = mirror;
1471                 vout->control[2].value = mirror;
1472                 mutex_unlock(&vout->lock);
1473                 break;
1474         }
1475         default:
1476                 ret = -EINVAL;
1477         }
1478         return ret;
1479 }
1480
1481 static int vidioc_reqbufs(struct file *file, void *fh,
1482                         struct v4l2_requestbuffers *req)
1483 {
1484         int ret = 0;
1485         unsigned int i, num_buffers = 0;
1486         struct omap_vout_device *vout = fh;
1487         struct videobuf_queue *q = &vout->vbq;
1488
1489         if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1490                 return -EINVAL;
1491         /* if memory is not mmp or userptr
1492            return error */
1493         if ((V4L2_MEMORY_MMAP != req->memory) &&
1494                         (V4L2_MEMORY_USERPTR != req->memory))
1495                 return -EINVAL;
1496
1497         mutex_lock(&vout->lock);
1498         /* Cannot be requested when streaming is on */
1499         if (vout->streaming) {
1500                 ret = -EBUSY;
1501                 goto reqbuf_err;
1502         }
1503
1504         /* If buffers are already allocated free them */
1505         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1506                 if (vout->mmap_count) {
1507                         ret = -EBUSY;
1508                         goto reqbuf_err;
1509                 }
1510                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1511                         video1_numbuffers : video2_numbuffers;
1512                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1513                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1514                                         vout->buffer_size);
1515                         vout->buf_virt_addr[i] = 0;
1516                         vout->buf_phy_addr[i] = 0;
1517                 }
1518                 vout->buffer_allocated = num_buffers;
1519                 videobuf_mmap_free(q);
1520         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1521                 if (vout->buffer_allocated) {
1522                         videobuf_mmap_free(q);
1523                         for (i = 0; i < vout->buffer_allocated; i++) {
1524                                 kfree(q->bufs[i]);
1525                                 q->bufs[i] = NULL;
1526                         }
1527                         vout->buffer_allocated = 0;
1528                 }
1529         }
1530
1531         /*store the memory type in data structure */
1532         vout->memory = req->memory;
1533
1534         INIT_LIST_HEAD(&vout->dma_queue);
1535
1536         /* call videobuf_reqbufs api */
1537         ret = videobuf_reqbufs(q, req);
1538         if (ret < 0)
1539                 goto reqbuf_err;
1540
1541         vout->buffer_allocated = req->count;
1542
1543 reqbuf_err:
1544         mutex_unlock(&vout->lock);
1545         return ret;
1546 }
1547
1548 static int vidioc_querybuf(struct file *file, void *fh,
1549                         struct v4l2_buffer *b)
1550 {
1551         struct omap_vout_device *vout = fh;
1552
1553         return videobuf_querybuf(&vout->vbq, b);
1554 }
1555
1556 static int vidioc_qbuf(struct file *file, void *fh,
1557                         struct v4l2_buffer *buffer)
1558 {
1559         struct omap_vout_device *vout = fh;
1560         struct videobuf_queue *q = &vout->vbq;
1561
1562         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1563                         (buffer->index >= vout->buffer_allocated) ||
1564                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1565                 return -EINVAL;
1566         }
1567         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1568                 if ((buffer->length < vout->pix.sizeimage) ||
1569                                 (0 == buffer->m.userptr)) {
1570                         return -EINVAL;
1571                 }
1572         }
1573
1574         if ((is_rotation_enabled(vout)) &&
1575                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1576                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1577                                 "DMA Channel not allocated for Rotation\n");
1578                 return -EINVAL;
1579         }
1580
1581         return videobuf_qbuf(q, buffer);
1582 }
1583
1584 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1585 {
1586         struct omap_vout_device *vout = fh;
1587         struct videobuf_queue *q = &vout->vbq;
1588
1589         int ret;
1590         u32 addr;
1591         unsigned long size;
1592         struct videobuf_buffer *vb;
1593
1594         vb = q->bufs[b->index];
1595
1596         if (!vout->streaming)
1597                 return -EINVAL;
1598
1599         if (file->f_flags & O_NONBLOCK)
1600                 /* Call videobuf_dqbuf for non blocking mode */
1601                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1602         else
1603                 /* Call videobuf_dqbuf for  blocking mode */
1604                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1605
1606         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1607         size = (unsigned long) vb->size;
1608         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1609                                 size, DMA_TO_DEVICE);
1610         return ret;
1611 }
1612
1613 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1614 {
1615         int ret = 0, j;
1616         u32 addr = 0, mask = 0;
1617         struct omap_vout_device *vout = fh;
1618         struct videobuf_queue *q = &vout->vbq;
1619         struct omapvideo_info *ovid = &vout->vid_info;
1620
1621         mutex_lock(&vout->lock);
1622
1623         if (vout->streaming) {
1624                 ret = -EBUSY;
1625                 goto streamon_err;
1626         }
1627
1628         ret = videobuf_streamon(q);
1629         if (ret)
1630                 goto streamon_err;
1631
1632         if (list_empty(&vout->dma_queue)) {
1633                 ret = -EIO;
1634                 goto streamon_err1;
1635         }
1636
1637         /* Get the next frame from the buffer queue */
1638         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1639                         struct videobuf_buffer, queue);
1640         /* Remove buffer from the buffer queue */
1641         list_del(&vout->cur_frm->queue);
1642         /* Mark state of the current frame to active */
1643         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1644         /* Initialize field_id and started member */
1645         vout->field_id = 0;
1646
1647         /* set flag here. Next QBUF will start DMA */
1648         vout->streaming = true;
1649
1650         vout->first_int = 1;
1651
1652         if (omap_vout_calculate_offset(vout)) {
1653                 ret = -EINVAL;
1654                 goto streamon_err1;
1655         }
1656         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1657                 + vout->cropped_offset;
1658
1659         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1660                 | DISPC_IRQ_VSYNC2;
1661
1662         /* First save the configuration in ovelray structure */
1663         ret = omapvid_init(vout, addr);
1664         if (ret) {
1665                 v4l2_err(&vout->vid_dev->v4l2_dev,
1666                                 "failed to set overlay info\n");
1667                 goto streamon_err1;
1668         }
1669
1670         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1671
1672         /* Enable the pipeline and set the Go bit */
1673         ret = omapvid_apply_changes(vout);
1674         if (ret)
1675                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1676
1677         for (j = 0; j < ovid->num_overlays; j++) {
1678                 struct omap_overlay *ovl = ovid->overlays[j];
1679                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1680
1681                 if (dssdev) {
1682                         ret = ovl->enable(ovl);
1683                         if (ret)
1684                                 goto streamon_err1;
1685                 }
1686         }
1687
1688         ret = 0;
1689
1690 streamon_err1:
1691         if (ret)
1692                 ret = videobuf_streamoff(q);
1693 streamon_err:
1694         mutex_unlock(&vout->lock);
1695         return ret;
1696 }
1697
1698 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1699 {
1700         u32 mask = 0;
1701         int ret = 0, j;
1702         struct omap_vout_device *vout = fh;
1703         struct omapvideo_info *ovid = &vout->vid_info;
1704
1705         if (!vout->streaming)
1706                 return -EINVAL;
1707
1708         vout->streaming = false;
1709         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1710                 | DISPC_IRQ_VSYNC2;
1711
1712         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1713
1714         for (j = 0; j < ovid->num_overlays; j++) {
1715                 struct omap_overlay *ovl = ovid->overlays[j];
1716                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1717
1718                 if (dssdev)
1719                         ovl->disable(ovl);
1720         }
1721
1722         /* Turn of the pipeline */
1723         ret = omapvid_apply_changes(vout);
1724         if (ret)
1725                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1726                                 " streamoff\n");
1727
1728         INIT_LIST_HEAD(&vout->dma_queue);
1729         ret = videobuf_streamoff(&vout->vbq);
1730
1731         return ret;
1732 }
1733
1734 static int vidioc_s_fbuf(struct file *file, void *fh,
1735                                 const struct v4l2_framebuffer *a)
1736 {
1737         int enable = 0;
1738         struct omap_overlay *ovl;
1739         struct omapvideo_info *ovid;
1740         struct omap_vout_device *vout = fh;
1741         struct omap_overlay_manager_info info;
1742         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1743
1744         ovid = &vout->vid_info;
1745         ovl = ovid->overlays[0];
1746
1747         /* OMAP DSS doesn't support Source and Destination color
1748            key together */
1749         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1750                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1751                 return -EINVAL;
1752         /* OMAP DSS Doesn't support the Destination color key
1753            and alpha blending together */
1754         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1755                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1756                 return -EINVAL;
1757
1758         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1759                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1760                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1761         } else
1762                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1763
1764         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1765                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1766                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1767         } else
1768                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1769
1770         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1771                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1772                 enable = 1;
1773         else
1774                 enable = 0;
1775         if (ovl->manager && ovl->manager->get_manager_info &&
1776                         ovl->manager->set_manager_info) {
1777
1778                 ovl->manager->get_manager_info(ovl->manager, &info);
1779                 info.trans_enabled = enable;
1780                 info.trans_key_type = key_type;
1781                 info.trans_key = vout->win.chromakey;
1782
1783                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1784                         return -EINVAL;
1785         }
1786         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1787                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1788                 enable = 1;
1789         } else {
1790                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1791                 enable = 0;
1792         }
1793         if (ovl->manager && ovl->manager->get_manager_info &&
1794                         ovl->manager->set_manager_info) {
1795                 ovl->manager->get_manager_info(ovl->manager, &info);
1796                 /* enable this only if there is no zorder cap */
1797                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1798                         info.partial_alpha_enabled = enable;
1799                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1800                         return -EINVAL;
1801         }
1802
1803         return 0;
1804 }
1805
1806 static int vidioc_g_fbuf(struct file *file, void *fh,
1807                 struct v4l2_framebuffer *a)
1808 {
1809         struct omap_overlay *ovl;
1810         struct omapvideo_info *ovid;
1811         struct omap_vout_device *vout = fh;
1812         struct omap_overlay_manager_info info;
1813
1814         ovid = &vout->vid_info;
1815         ovl = ovid->overlays[0];
1816
1817         /* The video overlay must stay within the framebuffer and can't be
1818            positioned independently. */
1819         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1820         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1821                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1822
1823         if (ovl->manager && ovl->manager->get_manager_info) {
1824                 ovl->manager->get_manager_info(ovl->manager, &info);
1825                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1826                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1827                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1828                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1829         }
1830         if (ovl->manager && ovl->manager->get_manager_info) {
1831                 ovl->manager->get_manager_info(ovl->manager, &info);
1832                 if (info.partial_alpha_enabled)
1833                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1834         }
1835
1836         return 0;
1837 }
1838
1839 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1840         .vidioc_querycap                        = vidioc_querycap,
1841         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1842         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1843         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1844         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1845         .vidioc_queryctrl                       = vidioc_queryctrl,
1846         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1847         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1848         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1849         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1850         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1851         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1852         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1853         .vidioc_cropcap                         = vidioc_cropcap,
1854         .vidioc_g_crop                          = vidioc_g_crop,
1855         .vidioc_s_crop                          = vidioc_s_crop,
1856         .vidioc_reqbufs                         = vidioc_reqbufs,
1857         .vidioc_querybuf                        = vidioc_querybuf,
1858         .vidioc_qbuf                            = vidioc_qbuf,
1859         .vidioc_dqbuf                           = vidioc_dqbuf,
1860         .vidioc_streamon                        = vidioc_streamon,
1861         .vidioc_streamoff                       = vidioc_streamoff,
1862 };
1863
1864 static const struct v4l2_file_operations omap_vout_fops = {
1865         .owner          = THIS_MODULE,
1866         .poll           = omap_vout_poll,
1867         .unlocked_ioctl = video_ioctl2,
1868         .mmap           = omap_vout_mmap,
1869         .open           = omap_vout_open,
1870         .release        = omap_vout_release,
1871 };
1872
1873 /* Init functions used during driver initialization */
1874 /* Initial setup of video_data */
1875 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1876 {
1877         struct video_device *vfd;
1878         struct v4l2_pix_format *pix;
1879         struct v4l2_control *control;
1880         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1881         struct omap_dss_device *display = ovl->get_device(ovl);
1882
1883         /* set the default pix */
1884         pix = &vout->pix;
1885
1886         /* Set the default picture of QVGA  */
1887         pix->width = QQVGA_WIDTH;
1888         pix->height = QQVGA_HEIGHT;
1889
1890         /* Default pixel format is RGB 5-6-5 */
1891         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1892         pix->field = V4L2_FIELD_ANY;
1893         pix->bytesperline = pix->width * 2;
1894         pix->sizeimage = pix->bytesperline * pix->height;
1895         pix->colorspace = V4L2_COLORSPACE_JPEG;
1896
1897         vout->bpp = RGB565_BPP;
1898         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1899         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1900
1901         /* Set the data structures for the overlay parameters*/
1902         vout->win.global_alpha = 255;
1903         vout->fbuf.flags = 0;
1904         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1905                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1906         vout->win.chromakey = 0;
1907
1908         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1909
1910         /*Initialize the control variables for
1911           rotation, flipping and background color. */
1912         control = vout->control;
1913         control[0].id = V4L2_CID_ROTATE;
1914         control[0].value = 0;
1915         vout->rotation = 0;
1916         vout->mirror = false;
1917         vout->control[2].id = V4L2_CID_HFLIP;
1918         vout->control[2].value = 0;
1919         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1920                 vout->vrfb_bpp = 2;
1921
1922         control[1].id = V4L2_CID_BG_COLOR;
1923         control[1].value = 0;
1924
1925         /* initialize the video_device struct */
1926         vfd = vout->vfd = video_device_alloc();
1927
1928         if (!vfd) {
1929                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1930                                 " video device struct\n");
1931                 return -ENOMEM;
1932         }
1933         vfd->release = video_device_release;
1934         vfd->ioctl_ops = &vout_ioctl_ops;
1935
1936         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1937
1938         vfd->fops = &omap_vout_fops;
1939         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1940         vfd->vfl_dir = VFL_DIR_TX;
1941         mutex_init(&vout->lock);
1942
1943         vfd->minor = -1;
1944         return 0;
1945
1946 }
1947
1948 /* Setup video buffers */
1949 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1950                 int vid_num)
1951 {
1952         u32 numbuffers;
1953         int ret = 0, i;
1954         struct omapvideo_info *ovid;
1955         struct omap_vout_device *vout;
1956         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1957         struct omap2video_device *vid_dev =
1958                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1959
1960         vout = vid_dev->vouts[vid_num];
1961         ovid = &vout->vid_info;
1962
1963         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1964         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1965         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1966
1967         for (i = 0; i < numbuffers; i++) {
1968                 vout->buf_virt_addr[i] =
1969                         omap_vout_alloc_buffer(vout->buffer_size,
1970                                         (u32 *) &vout->buf_phy_addr[i]);
1971                 if (!vout->buf_virt_addr[i]) {
1972                         numbuffers = i;
1973                         ret = -ENOMEM;
1974                         goto free_buffers;
1975                 }
1976         }
1977
1978         vout->cropped_offset = 0;
1979
1980         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1981                 bool static_vrfb_allocation = (vid_num == 0) ?
1982                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1983                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1984                                 static_vrfb_allocation);
1985         }
1986
1987         return ret;
1988
1989 free_buffers:
1990         for (i = 0; i < numbuffers; i++) {
1991                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1992                                                 vout->buffer_size);
1993                 vout->buf_virt_addr[i] = 0;
1994                 vout->buf_phy_addr[i] = 0;
1995         }
1996         return ret;
1997
1998 }
1999
2000 /* Create video out devices */
2001 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2002 {
2003         int ret = 0, k;
2004         struct omap_vout_device *vout;
2005         struct video_device *vfd = NULL;
2006         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2007         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2008                         struct omap2video_device, v4l2_dev);
2009
2010         for (k = 0; k < pdev->num_resources; k++) {
2011
2012                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2013                 if (!vout) {
2014                         dev_err(&pdev->dev, ": could not allocate memory\n");
2015                         return -ENOMEM;
2016                 }
2017
2018                 vout->vid = k;
2019                 vid_dev->vouts[k] = vout;
2020                 vout->vid_dev = vid_dev;
2021                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2022                 if (pdev->num_resources == 1)
2023                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2024                 else
2025                         /* Else select video1 and video2 one by one. */
2026                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2027                 vout->vid_info.num_overlays = 1;
2028                 vout->vid_info.id = k + 1;
2029
2030                 /* Set VRFB as rotation_type for omap2 and omap3 */
2031                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2032                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2033
2034                 /* Setup the default configuration for the video devices
2035                  */
2036                 if (omap_vout_setup_video_data(vout) != 0) {
2037                         ret = -ENOMEM;
2038                         goto error;
2039                 }
2040
2041                 /* Allocate default number of buffers for the video streaming
2042                  * and reserve the VRFB space for rotation
2043                  */
2044                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2045                         ret = -ENOMEM;
2046                         goto error1;
2047                 }
2048
2049                 /* Register the Video device with V4L2
2050                  */
2051                 vfd = vout->vfd;
2052                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2053                         dev_err(&pdev->dev, ": Could not register "
2054                                         "Video for Linux device\n");
2055                         vfd->minor = -1;
2056                         ret = -ENODEV;
2057                         goto error2;
2058                 }
2059                 video_set_drvdata(vfd, vout);
2060
2061                 dev_info(&pdev->dev, ": registered and initialized"
2062                                 " video device %d\n", vfd->minor);
2063                 if (k == (pdev->num_resources - 1))
2064                         return 0;
2065
2066                 continue;
2067 error2:
2068                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2069                         omap_vout_release_vrfb(vout);
2070                 omap_vout_free_buffers(vout);
2071 error1:
2072                 video_device_release(vfd);
2073 error:
2074                 kfree(vout);
2075                 return ret;
2076         }
2077
2078         return -ENODEV;
2079 }
2080 /* Driver functions */
2081 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2082 {
2083         struct video_device *vfd;
2084         struct omapvideo_info *ovid;
2085
2086         if (!vout)
2087                 return;
2088
2089         vfd = vout->vfd;
2090         ovid = &vout->vid_info;
2091         if (vfd) {
2092                 if (!video_is_registered(vfd)) {
2093                         /*
2094                          * The device was never registered, so release the
2095                          * video_device struct directly.
2096                          */
2097                         video_device_release(vfd);
2098                 } else {
2099                         /*
2100                          * The unregister function will release the video_device
2101                          * struct as well as unregistering it.
2102                          */
2103                         video_unregister_device(vfd);
2104                 }
2105         }
2106         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2107                 omap_vout_release_vrfb(vout);
2108                 /* Free the VRFB buffer if allocated
2109                  * init time
2110                  */
2111                 if (vout->vrfb_static_allocation)
2112                         omap_vout_free_vrfb_buffers(vout);
2113         }
2114         omap_vout_free_buffers(vout);
2115
2116         kfree(vout);
2117 }
2118
2119 static int omap_vout_remove(struct platform_device *pdev)
2120 {
2121         int k;
2122         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2123         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2124                         omap2video_device, v4l2_dev);
2125
2126         v4l2_device_unregister(v4l2_dev);
2127         for (k = 0; k < pdev->num_resources; k++)
2128                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2129
2130         for (k = 0; k < vid_dev->num_displays; k++) {
2131                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2132                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2133
2134                 omap_dss_put_device(vid_dev->displays[k]);
2135         }
2136         kfree(vid_dev);
2137         return 0;
2138 }
2139
2140 static int __init omap_vout_probe(struct platform_device *pdev)
2141 {
2142         int ret = 0, i;
2143         struct omap_overlay *ovl;
2144         struct omap_dss_device *dssdev = NULL;
2145         struct omap_dss_device *def_display;
2146         struct omap2video_device *vid_dev = NULL;
2147
2148         if (omapdss_is_initialized() == false)
2149                 return -EPROBE_DEFER;
2150
2151         ret = omapdss_compat_init();
2152         if (ret) {
2153                 dev_err(&pdev->dev, "failed to init dss\n");
2154                 return ret;
2155         }
2156
2157         if (pdev->num_resources == 0) {
2158                 dev_err(&pdev->dev, "probed for an unknown device\n");
2159                 ret = -ENODEV;
2160                 goto err_dss_init;
2161         }
2162
2163         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2164         if (vid_dev == NULL) {
2165                 ret = -ENOMEM;
2166                 goto err_dss_init;
2167         }
2168
2169         vid_dev->num_displays = 0;
2170         for_each_dss_dev(dssdev) {
2171                 omap_dss_get_device(dssdev);
2172
2173                 if (!dssdev->driver) {
2174                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2175                                         dssdev->name);
2176                         omap_dss_put_device(dssdev);
2177                         continue;
2178                 }
2179
2180                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2181         }
2182
2183         if (vid_dev->num_displays == 0) {
2184                 dev_err(&pdev->dev, "no displays\n");
2185                 ret = -EINVAL;
2186                 goto probe_err0;
2187         }
2188
2189         vid_dev->num_overlays = omap_dss_get_num_overlays();
2190         for (i = 0; i < vid_dev->num_overlays; i++)
2191                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2192
2193         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2194         for (i = 0; i < vid_dev->num_managers; i++)
2195                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2196
2197         /* Get the Video1 overlay and video2 overlay.
2198          * Setup the Display attached to that overlays
2199          */
2200         for (i = 1; i < vid_dev->num_overlays; i++) {
2201                 ovl = omap_dss_get_overlay(i);
2202                 dssdev = ovl->get_device(ovl);
2203
2204                 if (dssdev) {
2205                         def_display = dssdev;
2206                 } else {
2207                         dev_warn(&pdev->dev, "cannot find display\n");
2208                         def_display = NULL;
2209                 }
2210                 if (def_display) {
2211                         struct omap_dss_driver *dssdrv = def_display->driver;
2212
2213                         ret = dssdrv->enable(def_display);
2214                         if (ret) {
2215                                 /* Here we are not considering a error
2216                                  *  as display may be enabled by frame
2217                                  *  buffer driver
2218                                  */
2219                                 dev_warn(&pdev->dev,
2220                                         "'%s' Display already enabled\n",
2221                                         def_display->name);
2222                         }
2223                 }
2224         }
2225
2226         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2227                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2228                 ret = -ENODEV;
2229                 goto probe_err1;
2230         }
2231
2232         ret = omap_vout_create_video_devices(pdev);
2233         if (ret)
2234                 goto probe_err2;
2235
2236         for (i = 0; i < vid_dev->num_displays; i++) {
2237                 struct omap_dss_device *display = vid_dev->displays[i];
2238
2239                 if (display->driver->update)
2240                         display->driver->update(display, 0, 0,
2241                                         display->panel.timings.x_res,
2242                                         display->panel.timings.y_res);
2243         }
2244         return 0;
2245
2246 probe_err2:
2247         v4l2_device_unregister(&vid_dev->v4l2_dev);
2248 probe_err1:
2249         for (i = 1; i < vid_dev->num_overlays; i++) {
2250                 def_display = NULL;
2251                 ovl = omap_dss_get_overlay(i);
2252                 dssdev = ovl->get_device(ovl);
2253
2254                 if (dssdev)
2255                         def_display = dssdev;
2256
2257                 if (def_display && def_display->driver)
2258                         def_display->driver->disable(def_display);
2259         }
2260 probe_err0:
2261         kfree(vid_dev);
2262 err_dss_init:
2263         omapdss_compat_uninit();
2264         return ret;
2265 }
2266
2267 static struct platform_driver omap_vout_driver = {
2268         .driver = {
2269                 .name = VOUT_NAME,
2270         },
2271         .remove = omap_vout_remove,
2272 };
2273
2274 static int __init omap_vout_init(void)
2275 {
2276         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2277                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2278                 return -EINVAL;
2279         }
2280         return 0;
2281 }
2282
2283 static void omap_vout_cleanup(void)
2284 {
2285         platform_driver_unregister(&omap_vout_driver);
2286 }
2287
2288 late_initcall(omap_vout_init);
2289 module_exit(omap_vout_cleanup);