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/omapfb_dss.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                 .pixelformat = V4L2_PIX_FMT_RGB565,
 118         },
 119         {
 120                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
 121                  *  this for RGB24 unpack mode, the last 8 bits are ignored
 122                  * */
 123                 .pixelformat = V4L2_PIX_FMT_RGB32,
 124         },
 125         {
 126                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
 127                  *        this for RGB24 packed mode
 128                  *
 129                  */
 130                 .pixelformat = V4L2_PIX_FMT_RGB24,
 131         },
 132         {
 133                 .pixelformat = V4L2_PIX_FMT_YUYV,
 134         },
 135         {
 136                 .pixelformat = V4L2_PIX_FMT_UYVY,
 137         },
 138 };
 139
 140 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
 141
 142 /*
 143  * Try format
 144  */
 145 static int omap_vout_try_format(struct v4l2_pix_format *pix)
 146 {
 147         int ifmt, bpp = 0;
 148
 149         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
 150                                                 (u32)VID_MAX_HEIGHT);
 151         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
 152
 153         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
 154                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
 155                         break;
 156         }
 157
 158         if (ifmt == NUM_OUTPUT_FORMATS)
 159                 ifmt = 0;
 160
 161         pix->pixelformat = omap_formats[ifmt].pixelformat;
 162         pix->field = V4L2_FIELD_ANY;
 163
 164         switch (pix->pixelformat) {
 165         case V4L2_PIX_FMT_YUYV:
 166         case V4L2_PIX_FMT_UYVY:
 167         default:
 168                 pix->colorspace = V4L2_COLORSPACE_JPEG;
 169                 bpp = YUYV_BPP;
 170                 break;
 171         case V4L2_PIX_FMT_RGB565:
 172         case V4L2_PIX_FMT_RGB565X:
 173                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 174                 bpp = RGB565_BPP;
 175                 break;
 176         case V4L2_PIX_FMT_RGB24:
 177                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 178                 bpp = RGB24_BPP;
 179                 break;
 180         case V4L2_PIX_FMT_RGB32:
 181         case V4L2_PIX_FMT_BGR32:
 182                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 183                 bpp = RGB32_BPP;
 184                 break;
 185         }
 186         pix->bytesperline = pix->width * bpp;
 187         pix->sizeimage = pix->bytesperline * pix->height;
 188
 189         return bpp;
 190 }
 191
 192 /*
 193  * omap_vout_get_userptr: Convert user space virtual address to physical
 194  * address.
 195  */
 196 static int omap_vout_get_userptr(struct videobuf_buffer *vb, long virtp,
 197                                  u32 *physp)
 198 {
 199         struct frame_vector *vec;
 200         int ret;
 201
 202         /* For kernel direct-mapped memory, take the easy way */
 203         if (virtp >= PAGE_OFFSET) {
 204                 *physp = virt_to_phys((void *)virtp);
 205                 return 0;
 206         }
 207
 208         vec = frame_vector_create(1);
 209         if (!vec)
 210                 return -ENOMEM;
 211
 212         ret = get_vaddr_frames(virtp, 1, FOLL_WRITE, vec);
 213         if (ret != 1) {
 214                 frame_vector_destroy(vec);
 215                 return -EINVAL;
 216         }
 217         *physp = __pfn_to_phys(frame_vector_pfns(vec)[0]);
 218         vb->priv = vec;
 219
 220         return 0;
 221 }
 222
 223 /*
 224  * Free the V4L2 buffers
 225  */
 226 void omap_vout_free_buffers(struct omap_vout_device *vout)
 227 {
 228         int i, numbuffers;
 229
 230         /* Allocate memory for the buffers */
 231         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
 232         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
 233
 234         for (i = 0; i < numbuffers; i++) {
 235                 omap_vout_free_buffer(vout->buf_virt_addr[i],
 236                                 vout->buffer_size);
 237                 vout->buf_phy_addr[i] = 0;
 238                 vout->buf_virt_addr[i] = 0;
 239         }
 240 }
 241
 242 /*
 243  * Convert V4L2 rotation to DSS rotation
 244  *      V4L2 understand 0, 90, 180, 270.
 245  *      Convert to 0, 1, 2 and 3 respectively for DSS
 246  */
 247 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
 248                         enum dss_rotation *rotation, bool mirror)
 249 {
 250         int ret = 0;
 251
 252         switch (v4l2_rotation) {
 253         case 90:
 254                 *rotation = dss_rotation_90_degree;
 255                 break;
 256         case 180:
 257                 *rotation = dss_rotation_180_degree;
 258                 break;
 259         case 270:
 260                 *rotation = dss_rotation_270_degree;
 261                 break;
 262         case 0:
 263                 *rotation = dss_rotation_0_degree;
 264                 break;
 265         default:
 266                 ret = -EINVAL;
 267         }
 268         return ret;
 269 }
 270
 271 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
 272 {
 273         struct omapvideo_info *ovid;
 274         struct v4l2_rect *crop = &vout->crop;
 275         struct v4l2_pix_format *pix = &vout->pix;
 276         int *cropped_offset = &vout->cropped_offset;
 277         int ps = 2, line_length = 0;
 278
 279         ovid = &vout->vid_info;
 280
 281         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 282                 omap_vout_calculate_vrfb_offset(vout);
 283         } else {
 284                 vout->line_length = line_length = pix->width;
 285
 286                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
 287                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
 288                         ps = 2;
 289                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
 290                         ps = 4;
 291                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
 292                         ps = 3;
 293
 294                 vout->ps = ps;
 295
 296                 *cropped_offset = (line_length * ps) *
 297                         crop->top + crop->left * ps;
 298         }
 299
 300         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
 301                         __func__, vout->cropped_offset);
 302
 303         return 0;
 304 }
 305
 306 /*
 307  * Convert V4L2 pixel format to DSS pixel format
 308  */
 309 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
 310 {
 311         struct omap_overlay *ovl;
 312         struct omapvideo_info *ovid;
 313         struct v4l2_pix_format *pix = &vout->pix;
 314         enum omap_color_mode mode;
 315
 316         ovid = &vout->vid_info;
 317         ovl = ovid->overlays[0];
 318
 319         switch (pix->pixelformat) {
 320         case V4L2_PIX_FMT_YUYV:
 321                 mode = OMAP_DSS_COLOR_YUV2;
 322                 break;
 323         case V4L2_PIX_FMT_UYVY:
 324                 mode = OMAP_DSS_COLOR_UYVY;
 325                 break;
 326         case V4L2_PIX_FMT_RGB565:
 327                 mode = OMAP_DSS_COLOR_RGB16;
 328                 break;
 329         case V4L2_PIX_FMT_RGB24:
 330                 mode = OMAP_DSS_COLOR_RGB24P;
 331                 break;
 332         case V4L2_PIX_FMT_RGB32:
 333                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
 334                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
 335                 break;
 336         case V4L2_PIX_FMT_BGR32:
 337                 mode = OMAP_DSS_COLOR_RGBX32;
 338                 break;
 339         default:
 340                 mode = -EINVAL;
 341                 break;
 342         }
 343         return mode;
 344 }
 345
 346 /*
 347  * Setup the overlay
 348  */
 349 static int omapvid_setup_overlay(struct omap_vout_device *vout,
 350                 struct omap_overlay *ovl, int posx, int posy, int outw,
 351                 int outh, u32 addr)
 352 {
 353         int ret = 0;
 354         struct omap_overlay_info info;
 355         int cropheight, cropwidth, pixwidth;
 356
 357         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
 358                         (outw != vout->pix.width || outh != vout->pix.height)) {
 359                 ret = -EINVAL;
 360                 goto setup_ovl_err;
 361         }
 362
 363         vout->dss_mode = video_mode_to_dss_mode(vout);
 364         if (vout->dss_mode == -EINVAL) {
 365                 ret = -EINVAL;
 366                 goto setup_ovl_err;
 367         }
 368
 369         /* Setup the input plane parameters according to
 370          * rotation value selected.
 371          */
 372         if (is_rotation_90_or_270(vout)) {
 373                 cropheight = vout->crop.width;
 374                 cropwidth = vout->crop.height;
 375                 pixwidth = vout->pix.height;
 376         } else {
 377                 cropheight = vout->crop.height;
 378                 cropwidth = vout->crop.width;
 379                 pixwidth = vout->pix.width;
 380         }
 381
 382         ovl->get_overlay_info(ovl, &info);
 383         info.paddr = addr;
 384         info.width = cropwidth;
 385         info.height = cropheight;
 386         info.color_mode = vout->dss_mode;
 387         info.mirror = vout->mirror;
 388         info.pos_x = posx;
 389         info.pos_y = posy;
 390         info.out_width = outw;
 391         info.out_height = outh;
 392         info.global_alpha = vout->win.global_alpha;
 393         if (!is_rotation_enabled(vout)) {
 394                 info.rotation = 0;
 395                 info.rotation_type = OMAP_DSS_ROT_DMA;
 396                 info.screen_width = pixwidth;
 397         } else {
 398                 info.rotation = vout->rotation;
 399                 info.rotation_type = OMAP_DSS_ROT_VRFB;
 400                 info.screen_width = 2048;
 401         }
 402
 403         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 404                 "%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
 405                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
 406                 "out_height=%d rotation_type=%d screen_width=%d\n", __func__,
 407                 ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
 408                 info.color_mode, info.rotation, info.mirror, info.pos_x,
 409                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
 410                 info.screen_width);
 411
 412         ret = ovl->set_overlay_info(ovl, &info);
 413         if (ret)
 414                 goto setup_ovl_err;
 415
 416         return 0;
 417
 418 setup_ovl_err:
 419         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
 420         return ret;
 421 }
 422
 423 /*
 424  * Initialize the overlay structure
 425  */
 426 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
 427 {
 428         int ret = 0, i;
 429         struct v4l2_window *win;
 430         struct omap_overlay *ovl;
 431         int posx, posy, outw, outh;
 432         struct omap_video_timings *timing;
 433         struct omapvideo_info *ovid = &vout->vid_info;
 434
 435         win = &vout->win;
 436         for (i = 0; i < ovid->num_overlays; i++) {
 437                 struct omap_dss_device *dssdev;
 438
 439                 ovl = ovid->overlays[i];
 440                 dssdev = ovl->get_device(ovl);
 441
 442                 if (!dssdev)
 443                         return -EINVAL;
 444
 445                 timing = &dssdev->panel.timings;
 446
 447                 outw = win->w.width;
 448                 outh = win->w.height;
 449                 switch (vout->rotation) {
 450                 case dss_rotation_90_degree:
 451                         /* Invert the height and width for 90
 452                          * and 270 degree rotation
 453                          */
 454                         swap(outw, outh);
 455                         posy = (timing->y_res - win->w.width) - win->w.left;
 456                         posx = win->w.top;
 457                         break;
 458
 459                 case dss_rotation_180_degree:
 460                         posx = (timing->x_res - win->w.width) - win->w.left;
 461                         posy = (timing->y_res - win->w.height) - win->w.top;
 462                         break;
 463
 464                 case dss_rotation_270_degree:
 465                         swap(outw, outh);
 466                         posy = win->w.left;
 467                         posx = (timing->x_res - win->w.height) - win->w.top;
 468                         break;
 469
 470                 default:
 471                         posx = win->w.left;
 472                         posy = win->w.top;
 473                         break;
 474                 }
 475
 476                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
 477                                 outw, outh, addr);
 478                 if (ret)
 479                         goto omapvid_init_err;
 480         }
 481         return 0;
 482
 483 omapvid_init_err:
 484         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
 485         return ret;
 486 }
 487
 488 /*
 489  * Apply the changes set the go bit of DSS
 490  */
 491 static int omapvid_apply_changes(struct omap_vout_device *vout)
 492 {
 493         int i;
 494         struct omap_overlay *ovl;
 495         struct omapvideo_info *ovid = &vout->vid_info;
 496
 497         for (i = 0; i < ovid->num_overlays; i++) {
 498                 struct omap_dss_device *dssdev;
 499
 500                 ovl = ovid->overlays[i];
 501                 dssdev = ovl->get_device(ovl);
 502                 if (!dssdev)
 503                         return -EINVAL;
 504                 ovl->manager->apply(ovl->manager);
 505         }
 506
 507         return 0;
 508 }
 509
 510 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
 511                 unsigned int irqstatus, u64 ts)
 512 {
 513         u32 fid;
 514
 515         if (vout->first_int) {
 516                 vout->first_int = 0;
 517                 goto err;
 518         }
 519
 520         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
 521                 fid = 1;
 522         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
 523                 fid = 0;
 524         else
 525                 goto err;
 526
 527         vout->field_id ^= 1;
 528         if (fid != vout->field_id) {
 529                 if (fid == 0)
 530                         vout->field_id = fid;
 531         } else if (0 == fid) {
 532                 if (vout->cur_frm == vout->next_frm)
 533                         goto err;
 534
 535                 vout->cur_frm->ts = ts;
 536                 vout->cur_frm->state = VIDEOBUF_DONE;
 537                 wake_up_interruptible(&vout->cur_frm->done);
 538                 vout->cur_frm = vout->next_frm;
 539         } else {
 540                 if (list_empty(&vout->dma_queue) ||
 541                                 (vout->cur_frm != vout->next_frm))
 542                         goto err;
 543         }
 544
 545         return vout->field_id;
 546 err:
 547         return 0;
 548 }
 549
 550 static void omap_vout_isr(void *arg, unsigned int irqstatus)
 551 {
 552         int ret, fid, mgr_id;
 553         u32 addr, irq;
 554         struct omap_overlay *ovl;
 555         u64 ts;
 556         struct omapvideo_info *ovid;
 557         struct omap_dss_device *cur_display;
 558         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
 559
 560         if (!vout->streaming)
 561                 return;
 562
 563         ovid = &vout->vid_info;
 564         ovl = ovid->overlays[0];
 565
 566         mgr_id = ovl->manager->id;
 567
 568         /* get the display device attached to the overlay */
 569         cur_display = ovl->get_device(ovl);
 570
 571         if (!cur_display)
 572                 return;
 573
 574         spin_lock(&vout->vbq_lock);
 575         ts = ktime_get_ns();
 576
 577         switch (cur_display->type) {
 578         case OMAP_DISPLAY_TYPE_DSI:
 579         case OMAP_DISPLAY_TYPE_DPI:
 580         case OMAP_DISPLAY_TYPE_DVI:
 581                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
 582                         irq = DISPC_IRQ_VSYNC;
 583                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
 584                         irq = DISPC_IRQ_VSYNC2;
 585                 else
 586                         goto vout_isr_err;
 587
 588                 if (!(irqstatus & irq))
 589                         goto vout_isr_err;
 590                 break;
 591         case OMAP_DISPLAY_TYPE_VENC:
 592                 fid = omapvid_handle_interlace_display(vout, irqstatus,
 593                                 ts);
 594                 if (!fid)
 595                         goto vout_isr_err;
 596                 break;
 597         case OMAP_DISPLAY_TYPE_HDMI:
 598                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
 599                         goto vout_isr_err;
 600                 break;
 601         default:
 602                 goto vout_isr_err;
 603         }
 604
 605         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
 606                 vout->cur_frm->ts = ts;
 607                 vout->cur_frm->state = VIDEOBUF_DONE;
 608                 wake_up_interruptible(&vout->cur_frm->done);
 609                 vout->cur_frm = vout->next_frm;
 610         }
 611
 612         vout->first_int = 0;
 613         if (list_empty(&vout->dma_queue))
 614                 goto vout_isr_err;
 615
 616         vout->next_frm = list_entry(vout->dma_queue.next,
 617                         struct videobuf_buffer, queue);
 618         list_del(&vout->next_frm->queue);
 619
 620         vout->next_frm->state = VIDEOBUF_ACTIVE;
 621
 622         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
 623                 + vout->cropped_offset;
 624
 625         /* First save the configuration in ovelray structure */
 626         ret = omapvid_init(vout, addr);
 627         if (ret) {
 628                 printk(KERN_ERR VOUT_NAME
 629                         "failed to set overlay info\n");
 630                 goto vout_isr_err;
 631         }
 632
 633         /* Enable the pipeline and set the Go bit */
 634         ret = omapvid_apply_changes(vout);
 635         if (ret)
 636                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
 637
 638 vout_isr_err:
 639         spin_unlock(&vout->vbq_lock);
 640 }
 641
 642 /* Video buffer call backs */
 643
 644 /*
 645  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
 646  * called. This is used to setup buffers and return size and count of
 647  * buffers allocated. After the call to this buffer, videobuf layer will
 648  * setup buffer queue depending on the size and count of buffers
 649  */
 650 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 651                           unsigned int *size)
 652 {
 653         int startindex = 0, i, j;
 654         u32 phy_addr = 0, virt_addr = 0;
 655         struct omap_vout_device *vout = q->priv_data;
 656         struct omapvideo_info *ovid = &vout->vid_info;
 657         int vid_max_buf_size;
 658
 659         if (!vout)
 660                 return -EINVAL;
 661
 662         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
 663                 video2_bufsize;
 664
 665         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
 666                 return -EINVAL;
 667
 668         startindex = (vout->vid == OMAP_VIDEO1) ?
 669                 video1_numbuffers : video2_numbuffers;
 670         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
 671                 *count = startindex;
 672
 673         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 674                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
 675                         return -ENOMEM;
 676         }
 677
 678         if (V4L2_MEMORY_MMAP != vout->memory)
 679                 return 0;
 680
 681         /* Now allocated the V4L2 buffers */
 682         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
 683         startindex = (vout->vid == OMAP_VIDEO1) ?
 684                 video1_numbuffers : video2_numbuffers;
 685
 686         /* Check the size of the buffer */
 687         if (*size > vid_max_buf_size) {
 688                 v4l2_err(&vout->vid_dev->v4l2_dev,
 689                                 "buffer allocation mismatch [%u] [%u]\n",
 690                                 *size, vout->buffer_size);
 691                 return -ENOMEM;
 692         }
 693
 694         for (i = startindex; i < *count; i++) {
 695                 vout->buffer_size = *size;
 696
 697                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
 698                                 &phy_addr);
 699                 if (!virt_addr) {
 700                         if (ovid->rotation_type == VOUT_ROT_NONE)
 701                                 break;
 702
 703                         if (!is_rotation_enabled(vout))
 704                                 break;
 705
 706                         /* Free the VRFB buffers if no space for V4L2 buffers */
 707                         for (j = i; j < *count; j++) {
 708                                 omap_vout_free_buffer(vout->smsshado_virt_addr[j],
 709                                                       vout->smsshado_size);
 710                                 vout->smsshado_virt_addr[j] = 0;
 711                                 vout->smsshado_phy_addr[j] = 0;
 712                         }
 713                 }
 714                 vout->buf_virt_addr[i] = virt_addr;
 715                 vout->buf_phy_addr[i] = phy_addr;
 716         }
 717         *count = vout->buffer_allocated = i;
 718
 719         return 0;
 720 }
 721
 722 /*
 723  * Free the V4L2 buffers additionally allocated than default
 724  * number of buffers
 725  */
 726 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
 727 {
 728         int num_buffers = 0, i;
 729
 730         num_buffers = (vout->vid == OMAP_VIDEO1) ?
 731                 video1_numbuffers : video2_numbuffers;
 732
 733         for (i = num_buffers; i < vout->buffer_allocated; i++) {
 734                 if (vout->buf_virt_addr[i])
 735                         omap_vout_free_buffer(vout->buf_virt_addr[i],
 736                                         vout->buffer_size);
 737
 738                 vout->buf_virt_addr[i] = 0;
 739                 vout->buf_phy_addr[i] = 0;
 740         }
 741         vout->buffer_allocated = num_buffers;
 742 }
 743
 744 /*
 745  * This function will be called when VIDIOC_QBUF ioctl is called.
 746  * It prepare buffers before give out for the display. This function
 747  * converts user space virtual address into physical address if userptr memory
 748  * exchange mechanism is used. If rotation is enabled, it copies entire
 749  * buffer into VRFB memory space before giving it to the DSS.
 750  */
 751 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
 752                         struct videobuf_buffer *vb,
 753                         enum v4l2_field field)
 754 {
 755         struct omap_vout_device *vout = q->priv_data;
 756         struct omapvideo_info *ovid = &vout->vid_info;
 757
 758         if (VIDEOBUF_NEEDS_INIT == vb->state) {
 759                 vb->width = vout->pix.width;
 760                 vb->height = vout->pix.height;
 761                 vb->size = vb->width * vb->height * vout->bpp;
 762                 vb->field = field;
 763         }
 764         vb->state = VIDEOBUF_PREPARED;
 765         /* if user pointer memory mechanism is used, get the physical
 766          * address of the buffer
 767          */
 768         if (V4L2_MEMORY_USERPTR == vb->memory) {
 769                 int ret;
 770
 771                 if (0 == vb->baddr)
 772                         return -EINVAL;
 773                 /* Physical address */
 774                 ret = omap_vout_get_userptr(vb, vb->baddr,
 775                                 (u32 *)&vout->queued_buf_addr[vb->i]);
 776                 if (ret < 0)
 777                         return ret;
 778         } else {
 779                 unsigned long addr, dma_addr;
 780                 unsigned long size;
 781
 782                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
 783                 size = (unsigned long) vb->size;
 784
 785                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
 786                                 size, DMA_TO_DEVICE);
 787                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
 788                         v4l2_err(&vout->vid_dev->v4l2_dev,
 789                                  "dma_map_single failed\n");
 790
 791                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
 792         }
 793
 794         if (ovid->rotation_type == VOUT_ROT_VRFB)
 795                 return omap_vout_prepare_vrfb(vout, vb);
 796         else
 797                 return 0;
 798 }
 799
 800 /*
 801  * Buffer queue function will be called from the videobuf layer when _QBUF
 802  * ioctl is called. It is used to enqueue buffer, which is ready to be
 803  * displayed.
 804  */
 805 static void omap_vout_buffer_queue(struct videobuf_queue *q,
 806                           struct videobuf_buffer *vb)
 807 {
 808         struct omap_vout_device *vout = q->priv_data;
 809
 810         /* Driver is also maintainig a queue. So enqueue buffer in the driver
 811          * queue */
 812         list_add_tail(&vb->queue, &vout->dma_queue);
 813
 814         vb->state = VIDEOBUF_QUEUED;
 815 }
 816
 817 /*
 818  * Buffer release function is called from videobuf layer to release buffer
 819  * which are already allocated
 820  */
 821 static void omap_vout_buffer_release(struct videobuf_queue *q,
 822                             struct videobuf_buffer *vb)
 823 {
 824         vb->state = VIDEOBUF_NEEDS_INIT;
 825         if (vb->memory == V4L2_MEMORY_USERPTR && vb->priv) {
 826                 struct frame_vector *vec = vb->priv;
 827
 828                 put_vaddr_frames(vec);
 829                 frame_vector_destroy(vec);
 830         }
 831 }
 832
 833 /*
 834  *  File operations
 835  */
 836 static __poll_t omap_vout_poll(struct file *file,
 837                                    struct poll_table_struct *wait)
 838 {
 839         struct omap_vout_device *vout = video_drvdata(file);
 840         struct videobuf_queue *q = &vout->vbq;
 841
 842         return videobuf_poll_stream(file, q, wait);
 843 }
 844
 845 static void omap_vout_vm_open(struct vm_area_struct *vma)
 846 {
 847         struct omap_vout_device *vout = vma->vm_private_data;
 848
 849         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 850                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 851         vout->mmap_count++;
 852 }
 853
 854 static void omap_vout_vm_close(struct vm_area_struct *vma)
 855 {
 856         struct omap_vout_device *vout = vma->vm_private_data;
 857
 858         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 859                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 860         vout->mmap_count--;
 861 }
 862
 863 static const struct vm_operations_struct omap_vout_vm_ops = {
 864         .open   = omap_vout_vm_open,
 865         .close  = omap_vout_vm_close,
 866 };
 867
 868 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
 869 {
 870         int i;
 871         void *pos;
 872         unsigned long start = vma->vm_start;
 873         unsigned long size = (vma->vm_end - vma->vm_start);
 874         struct omap_vout_device *vout = video_drvdata(file);
 875         struct videobuf_queue *q = &vout->vbq;
 876
 877         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 878                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
 879                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
 880
 881         /* look for the buffer to map */
 882         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
 883                 if (NULL == q->bufs[i])
 884                         continue;
 885                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
 886                         continue;
 887                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
 888                         break;
 889         }
 890
 891         if (VIDEO_MAX_FRAME == i) {
 892                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 893                                 "offset invalid [offset=0x%lx]\n",
 894                                 (vma->vm_pgoff << PAGE_SHIFT));
 895                 return -EINVAL;
 896         }
 897         /* Check the size of the buffer */
 898         if (size > vout->buffer_size) {
 899                 v4l2_err(&vout->vid_dev->v4l2_dev,
 900                                 "insufficient memory [%lu] [%u]\n",
 901                                 size, vout->buffer_size);
 902                 return -ENOMEM;
 903         }
 904
 905         q->bufs[i]->baddr = vma->vm_start;
 906
 907         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 908         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 909         vma->vm_ops = &omap_vout_vm_ops;
 910         vma->vm_private_data = (void *) vout;
 911         pos = (void *)vout->buf_virt_addr[i];
 912         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
 913         while (size > 0) {
 914                 unsigned long pfn;
 915                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
 916                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
 917                         return -EAGAIN;
 918                 start += PAGE_SIZE;
 919                 pos += PAGE_SIZE;
 920                 size -= PAGE_SIZE;
 921         }
 922         vout->mmap_count++;
 923         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 924
 925         return 0;
 926 }
 927
 928 static int omap_vout_release(struct file *file)
 929 {
 930         unsigned int ret, i;
 931         struct videobuf_queue *q;
 932         struct omapvideo_info *ovid;
 933         struct omap_vout_device *vout = video_drvdata(file);
 934
 935         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
 936         ovid = &vout->vid_info;
 937
 938         if (!vout)
 939                 return 0;
 940
 941         q = &vout->vbq;
 942         /* Disable all the overlay managers connected with this interface */
 943         for (i = 0; i < ovid->num_overlays; i++) {
 944                 struct omap_overlay *ovl = ovid->overlays[i];
 945                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
 946
 947                 if (dssdev)
 948                         ovl->disable(ovl);
 949         }
 950         /* Turn off the pipeline */
 951         ret = omapvid_apply_changes(vout);
 952         if (ret)
 953                 v4l2_warn(&vout->vid_dev->v4l2_dev,
 954                                 "Unable to apply changes\n");
 955
 956         /* Free all buffers */
 957         omap_vout_free_extra_buffers(vout);
 958
 959         /* Free the VRFB buffers only if they are allocated
 960          * during reqbufs.  Don't free if init time allocated
 961          */
 962         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 963                 if (!vout->vrfb_static_allocation)
 964                         omap_vout_free_vrfb_buffers(vout);
 965         }
 966         videobuf_mmap_free(q);
 967
 968         /* Even if apply changes fails we should continue
 969            freeing allocated memory */
 970         if (vout->streaming) {
 971                 u32 mask = 0;
 972
 973                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
 974                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
 975                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
 976                 vout->streaming = false;
 977
 978                 videobuf_streamoff(q);
 979                 videobuf_queue_cancel(q);
 980         }
 981
 982         if (vout->mmap_count != 0)
 983                 vout->mmap_count = 0;
 984
 985         vout->opened -= 1;
 986         v4l2_fh_release(file);
 987
 988         if (vout->buffer_allocated)
 989                 videobuf_mmap_free(q);
 990
 991         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 992         return ret;
 993 }
 994
 995 static int omap_vout_open(struct file *file)
 996 {
 997         struct videobuf_queue *q;
 998         struct omap_vout_device *vout = video_drvdata(file);
 999         int ret;
1000
1001         if (vout == NULL)
1002                 return -ENODEV;
1003
1004         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1005
1006         /* for now, we only support single open */
1007         if (vout->opened)
1008                 return -EBUSY;
1009
1010         ret = v4l2_fh_open(file);
1011         if (ret)
1012                 return ret;
1013
1014         vout->opened += 1;
1015         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1016
1017         q = &vout->vbq;
1018         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1019         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1020         video_vbq_ops.buf_release = omap_vout_buffer_release;
1021         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1022         spin_lock_init(&vout->vbq_lock);
1023
1024         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1025                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1026                         sizeof(struct videobuf_buffer), vout, NULL);
1027
1028         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1029         return 0;
1030 }
1031
1032 /*
1033  * V4L2 ioctls
1034  */
1035 static int vidioc_querycap(struct file *file, void *fh,
1036                 struct v4l2_capability *cap)
1037 {
1038         struct omap_vout_device *vout = video_drvdata(file);
1039
1040         strscpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1041         strscpy(cap->card, vout->vfd->name, sizeof(cap->card));
1042         cap->bus_info[0] = '\0';
1043         return 0;
1044 }
1045
1046 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1047                         struct v4l2_fmtdesc *fmt)
1048 {
1049         int index = fmt->index;
1050
1051         if (index >= NUM_OUTPUT_FORMATS)
1052                 return -EINVAL;
1053
1054         fmt->flags = omap_formats[index].flags;
1055         fmt->pixelformat = omap_formats[index].pixelformat;
1056
1057         return 0;
1058 }
1059
1060 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1061                         struct v4l2_format *f)
1062 {
1063         struct omap_vout_device *vout = video_drvdata(file);
1064
1065         f->fmt.pix = vout->pix;
1066         return 0;
1067
1068 }
1069
1070 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1071                         struct v4l2_format *f)
1072 {
1073         struct omap_overlay *ovl;
1074         struct omapvideo_info *ovid;
1075         struct omap_video_timings *timing;
1076         struct omap_vout_device *vout = video_drvdata(file);
1077         struct omap_dss_device *dssdev;
1078
1079         ovid = &vout->vid_info;
1080         ovl = ovid->overlays[0];
1081         /* get the display device attached to the overlay */
1082         dssdev = ovl->get_device(ovl);
1083
1084         if (!dssdev)
1085                 return -EINVAL;
1086
1087         timing = &dssdev->panel.timings;
1088
1089         vout->fbuf.fmt.height = timing->y_res;
1090         vout->fbuf.fmt.width = timing->x_res;
1091
1092         omap_vout_try_format(&f->fmt.pix);
1093         return 0;
1094 }
1095
1096 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1097                         struct v4l2_format *f)
1098 {
1099         int ret, bpp;
1100         struct omap_overlay *ovl;
1101         struct omapvideo_info *ovid;
1102         struct omap_video_timings *timing;
1103         struct omap_vout_device *vout = video_drvdata(file);
1104         struct omap_dss_device *dssdev;
1105
1106         if (vout->streaming)
1107                 return -EBUSY;
1108
1109         mutex_lock(&vout->lock);
1110
1111         ovid = &vout->vid_info;
1112         ovl = ovid->overlays[0];
1113         dssdev = ovl->get_device(ovl);
1114
1115         /* get the display device attached to the overlay */
1116         if (!dssdev) {
1117                 ret = -EINVAL;
1118                 goto s_fmt_vid_out_exit;
1119         }
1120         timing = &dssdev->panel.timings;
1121
1122         /* We don't support RGB24-packed mode if vrfb rotation
1123          * is enabled*/
1124         if ((is_rotation_enabled(vout)) &&
1125                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1126                 ret = -EINVAL;
1127                 goto s_fmt_vid_out_exit;
1128         }
1129
1130         /* get the framebuffer parameters */
1131
1132         if (is_rotation_90_or_270(vout)) {
1133                 vout->fbuf.fmt.height = timing->x_res;
1134                 vout->fbuf.fmt.width = timing->y_res;
1135         } else {
1136                 vout->fbuf.fmt.height = timing->y_res;
1137                 vout->fbuf.fmt.width = timing->x_res;
1138         }
1139
1140         /* change to smaller size is OK */
1141
1142         bpp = omap_vout_try_format(&f->fmt.pix);
1143         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1144
1145         /* try & set the new output format */
1146         vout->bpp = bpp;
1147         vout->pix = f->fmt.pix;
1148         vout->vrfb_bpp = 1;
1149
1150         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1151         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1152                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1153                 vout->vrfb_bpp = 2;
1154
1155         /* set default crop and win */
1156         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1157
1158         ret = 0;
1159
1160 s_fmt_vid_out_exit:
1161         mutex_unlock(&vout->lock);
1162         return ret;
1163 }
1164
1165 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1166                         struct v4l2_format *f)
1167 {
1168         int ret = 0;
1169         struct omap_vout_device *vout = video_drvdata(file);
1170         struct omap_overlay *ovl;
1171         struct omapvideo_info *ovid;
1172         struct v4l2_window *win = &f->fmt.win;
1173
1174         ovid = &vout->vid_info;
1175         ovl = ovid->overlays[0];
1176
1177         ret = omap_vout_try_window(&vout->fbuf, win);
1178
1179         if (!ret) {
1180                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1181                         win->global_alpha = 255;
1182                 else
1183                         win->global_alpha = f->fmt.win.global_alpha;
1184         }
1185
1186         return ret;
1187 }
1188
1189 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1190                         struct v4l2_format *f)
1191 {
1192         int ret = 0;
1193         struct omap_overlay *ovl;
1194         struct omapvideo_info *ovid;
1195         struct omap_vout_device *vout = video_drvdata(file);
1196         struct v4l2_window *win = &f->fmt.win;
1197
1198         mutex_lock(&vout->lock);
1199         ovid = &vout->vid_info;
1200         ovl = ovid->overlays[0];
1201
1202         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1203         if (!ret) {
1204                 /* Video1 plane does not support global alpha on OMAP3 */
1205                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1206                         vout->win.global_alpha = 255;
1207                 else
1208                         vout->win.global_alpha = f->fmt.win.global_alpha;
1209
1210                 vout->win.chromakey = f->fmt.win.chromakey;
1211         }
1212         mutex_unlock(&vout->lock);
1213         return ret;
1214 }
1215
1216 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1217                         struct v4l2_format *f)
1218 {
1219         u32 key_value =  0;
1220         struct omap_overlay *ovl;
1221         struct omapvideo_info *ovid;
1222         struct omap_vout_device *vout = video_drvdata(file);
1223         struct omap_overlay_manager_info info;
1224         struct v4l2_window *win = &f->fmt.win;
1225
1226         ovid = &vout->vid_info;
1227         ovl = ovid->overlays[0];
1228
1229         win->w = vout->win.w;
1230         win->field = vout->win.field;
1231         win->global_alpha = vout->win.global_alpha;
1232
1233         if (ovl->manager && ovl->manager->get_manager_info) {
1234                 ovl->manager->get_manager_info(ovl->manager, &info);
1235                 key_value = info.trans_key;
1236         }
1237         win->chromakey = key_value;
1238         return 0;
1239 }
1240
1241 static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1242 {
1243         struct omap_vout_device *vout = video_drvdata(file);
1244         struct v4l2_pix_format *pix = &vout->pix;
1245
1246         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1247                 return -EINVAL;
1248
1249         switch (sel->target) {
1250         case V4L2_SEL_TGT_CROP:
1251                 sel->r = vout->crop;
1252                 break;
1253         case V4L2_SEL_TGT_CROP_DEFAULT:
1254                 omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
1255                 break;
1256         case V4L2_SEL_TGT_CROP_BOUNDS:
1257                 /* Width and height are always even */
1258                 sel->r.width = pix->width & ~1;
1259                 sel->r.height = pix->height & ~1;
1260                 break;
1261         default:
1262                 return -EINVAL;
1263         }
1264         return 0;
1265 }
1266
1267 static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1268 {
1269         int ret = -EINVAL;
1270         struct omap_vout_device *vout = video_drvdata(file);
1271         struct omapvideo_info *ovid;
1272         struct omap_overlay *ovl;
1273         struct omap_video_timings *timing;
1274         struct omap_dss_device *dssdev;
1275
1276         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1277                 return -EINVAL;
1278
1279         if (sel->target != V4L2_SEL_TGT_CROP)
1280                 return -EINVAL;
1281
1282         if (vout->streaming)
1283                 return -EBUSY;
1284
1285         mutex_lock(&vout->lock);
1286         ovid = &vout->vid_info;
1287         ovl = ovid->overlays[0];
1288         /* get the display device attached to the overlay */
1289         dssdev = ovl->get_device(ovl);
1290
1291         if (!dssdev) {
1292                 ret = -EINVAL;
1293                 goto s_crop_err;
1294         }
1295
1296         timing = &dssdev->panel.timings;
1297
1298         if (is_rotation_90_or_270(vout)) {
1299                 vout->fbuf.fmt.height = timing->x_res;
1300                 vout->fbuf.fmt.width = timing->y_res;
1301         } else {
1302                 vout->fbuf.fmt.height = timing->y_res;
1303                 vout->fbuf.fmt.width = timing->x_res;
1304         }
1305
1306         ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1307                                  &vout->fbuf, &sel->r);
1308
1309 s_crop_err:
1310         mutex_unlock(&vout->lock);
1311         return ret;
1312 }
1313
1314 static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
1315 {
1316         struct omap_vout_device *vout =
1317                 container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
1318         int ret = 0;
1319
1320         switch (ctrl->id) {
1321         case V4L2_CID_ROTATE: {
1322                 struct omapvideo_info *ovid;
1323                 int rotation = ctrl->val;
1324
1325                 ovid = &vout->vid_info;
1326
1327                 mutex_lock(&vout->lock);
1328                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1329                         mutex_unlock(&vout->lock);
1330                         ret = -ERANGE;
1331                         break;
1332                 }
1333
1334                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1335                         mutex_unlock(&vout->lock);
1336                         ret = -EINVAL;
1337                         break;
1338                 }
1339
1340                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1341                                                         vout->mirror)) {
1342                         mutex_unlock(&vout->lock);
1343                         ret = -EINVAL;
1344                         break;
1345                 }
1346                 mutex_unlock(&vout->lock);
1347                 break;
1348         }
1349         case V4L2_CID_BG_COLOR:
1350         {
1351                 struct omap_overlay *ovl;
1352                 unsigned int color = ctrl->val;
1353                 struct omap_overlay_manager_info info;
1354
1355                 ovl = vout->vid_info.overlays[0];
1356
1357                 mutex_lock(&vout->lock);
1358                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1359                         mutex_unlock(&vout->lock);
1360                         ret = -EINVAL;
1361                         break;
1362                 }
1363
1364                 ovl->manager->get_manager_info(ovl->manager, &info);
1365                 info.default_color = color;
1366                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1367                         mutex_unlock(&vout->lock);
1368                         ret = -EINVAL;
1369                         break;
1370                 }
1371                 mutex_unlock(&vout->lock);
1372                 break;
1373         }
1374         case V4L2_CID_VFLIP:
1375         {
1376                 struct omapvideo_info *ovid;
1377                 unsigned int mirror = ctrl->val;
1378
1379                 ovid = &vout->vid_info;
1380
1381                 mutex_lock(&vout->lock);
1382                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1383                         mutex_unlock(&vout->lock);
1384                         ret = -ERANGE;
1385                         break;
1386                 }
1387
1388                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1389                         mutex_unlock(&vout->lock);
1390                         ret = -EINVAL;
1391                         break;
1392                 }
1393                 vout->mirror = mirror;
1394                 mutex_unlock(&vout->lock);
1395                 break;
1396         }
1397         default:
1398                 return -EINVAL;
1399         }
1400         return ret;
1401 }
1402
1403 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
1404         .s_ctrl = omap_vout_s_ctrl,
1405 };
1406
1407 static int vidioc_reqbufs(struct file *file, void *fh,
1408                         struct v4l2_requestbuffers *req)
1409 {
1410         int ret = 0;
1411         unsigned int i, num_buffers = 0;
1412         struct omap_vout_device *vout = video_drvdata(file);
1413         struct videobuf_queue *q = &vout->vbq;
1414
1415         if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1416                 return -EINVAL;
1417         /* if memory is not mmp or userptr
1418            return error */
1419         if ((V4L2_MEMORY_MMAP != req->memory) &&
1420                         (V4L2_MEMORY_USERPTR != req->memory))
1421                 return -EINVAL;
1422
1423         mutex_lock(&vout->lock);
1424         /* Cannot be requested when streaming is on */
1425         if (vout->streaming) {
1426                 ret = -EBUSY;
1427                 goto reqbuf_err;
1428         }
1429
1430         /* If buffers are already allocated free them */
1431         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1432                 if (vout->mmap_count) {
1433                         ret = -EBUSY;
1434                         goto reqbuf_err;
1435                 }
1436                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1437                         video1_numbuffers : video2_numbuffers;
1438                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1439                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1440                                         vout->buffer_size);
1441                         vout->buf_virt_addr[i] = 0;
1442                         vout->buf_phy_addr[i] = 0;
1443                 }
1444                 vout->buffer_allocated = num_buffers;
1445                 videobuf_mmap_free(q);
1446         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1447                 if (vout->buffer_allocated) {
1448                         videobuf_mmap_free(q);
1449                         for (i = 0; i < vout->buffer_allocated; i++) {
1450                                 kfree(q->bufs[i]);
1451                                 q->bufs[i] = NULL;
1452                         }
1453                         vout->buffer_allocated = 0;
1454                 }
1455         }
1456
1457         /*store the memory type in data structure */
1458         vout->memory = req->memory;
1459
1460         INIT_LIST_HEAD(&vout->dma_queue);
1461
1462         /* call videobuf_reqbufs api */
1463         ret = videobuf_reqbufs(q, req);
1464         if (ret < 0)
1465                 goto reqbuf_err;
1466
1467         vout->buffer_allocated = req->count;
1468
1469 reqbuf_err:
1470         mutex_unlock(&vout->lock);
1471         return ret;
1472 }
1473
1474 static int vidioc_querybuf(struct file *file, void *fh,
1475                         struct v4l2_buffer *b)
1476 {
1477         struct omap_vout_device *vout = video_drvdata(file);
1478
1479         return videobuf_querybuf(&vout->vbq, b);
1480 }
1481
1482 static int vidioc_qbuf(struct file *file, void *fh,
1483                         struct v4l2_buffer *buffer)
1484 {
1485         struct omap_vout_device *vout = video_drvdata(file);
1486         struct videobuf_queue *q = &vout->vbq;
1487
1488         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1489                         (buffer->index >= vout->buffer_allocated) ||
1490                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1491                 return -EINVAL;
1492         }
1493         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1494                 if ((buffer->length < vout->pix.sizeimage) ||
1495                                 (0 == buffer->m.userptr)) {
1496                         return -EINVAL;
1497                 }
1498         }
1499
1500         if ((is_rotation_enabled(vout)) &&
1501                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1502                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1503                                 "DMA Channel not allocated for Rotation\n");
1504                 return -EINVAL;
1505         }
1506
1507         return videobuf_qbuf(q, buffer);
1508 }
1509
1510 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1511 {
1512         struct omap_vout_device *vout = video_drvdata(file);
1513         struct videobuf_queue *q = &vout->vbq;
1514
1515         int ret;
1516         u32 addr;
1517         unsigned long size;
1518         struct videobuf_buffer *vb;
1519
1520         if (!vout->streaming)
1521                 return -EINVAL;
1522
1523         ret = videobuf_dqbuf(q, b, !!(file->f_flags & O_NONBLOCK));
1524         if (ret)
1525                 return ret;
1526
1527         vb = q->bufs[b->index];
1528
1529         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1530         size = (unsigned long) vb->size;
1531         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1532                                 size, DMA_TO_DEVICE);
1533         return 0;
1534 }
1535
1536 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1537 {
1538         int ret = 0, j;
1539         u32 addr = 0, mask = 0;
1540         struct omap_vout_device *vout = video_drvdata(file);
1541         struct videobuf_queue *q = &vout->vbq;
1542         struct omapvideo_info *ovid = &vout->vid_info;
1543
1544         mutex_lock(&vout->lock);
1545
1546         if (vout->streaming) {
1547                 ret = -EBUSY;
1548                 goto streamon_err;
1549         }
1550
1551         ret = videobuf_streamon(q);
1552         if (ret)
1553                 goto streamon_err;
1554
1555         if (list_empty(&vout->dma_queue)) {
1556                 ret = -EIO;
1557                 goto streamon_err1;
1558         }
1559
1560         /* Get the next frame from the buffer queue */
1561         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1562                         struct videobuf_buffer, queue);
1563         /* Remove buffer from the buffer queue */
1564         list_del(&vout->cur_frm->queue);
1565         /* Mark state of the current frame to active */
1566         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1567         /* Initialize field_id and started member */
1568         vout->field_id = 0;
1569
1570         /* set flag here. Next QBUF will start DMA */
1571         vout->streaming = true;
1572
1573         vout->first_int = 1;
1574
1575         if (omap_vout_calculate_offset(vout)) {
1576                 ret = -EINVAL;
1577                 goto streamon_err1;
1578         }
1579         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1580                 + vout->cropped_offset;
1581
1582         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1583                 | DISPC_IRQ_VSYNC2;
1584
1585         /* First save the configuration in ovelray structure */
1586         ret = omapvid_init(vout, addr);
1587         if (ret) {
1588                 v4l2_err(&vout->vid_dev->v4l2_dev,
1589                                 "failed to set overlay info\n");
1590                 goto streamon_err1;
1591         }
1592
1593         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1594
1595         /* Enable the pipeline and set the Go bit */
1596         ret = omapvid_apply_changes(vout);
1597         if (ret)
1598                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1599
1600         for (j = 0; j < ovid->num_overlays; j++) {
1601                 struct omap_overlay *ovl = ovid->overlays[j];
1602                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1603
1604                 if (dssdev) {
1605                         ret = ovl->enable(ovl);
1606                         if (ret)
1607                                 goto streamon_err1;
1608                 }
1609         }
1610
1611         ret = 0;
1612
1613 streamon_err1:
1614         if (ret)
1615                 ret = videobuf_streamoff(q);
1616 streamon_err:
1617         mutex_unlock(&vout->lock);
1618         return ret;
1619 }
1620
1621 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1622 {
1623         u32 mask = 0;
1624         int ret = 0, j;
1625         struct omap_vout_device *vout = video_drvdata(file);
1626         struct omapvideo_info *ovid = &vout->vid_info;
1627
1628         if (!vout->streaming)
1629                 return -EINVAL;
1630
1631         vout->streaming = false;
1632         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1633                 | DISPC_IRQ_VSYNC2;
1634
1635         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1636
1637         for (j = 0; j < ovid->num_overlays; j++) {
1638                 struct omap_overlay *ovl = ovid->overlays[j];
1639                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1640
1641                 if (dssdev)
1642                         ovl->disable(ovl);
1643         }
1644
1645         /* Turn of the pipeline */
1646         ret = omapvid_apply_changes(vout);
1647         if (ret)
1648                 v4l2_err(&vout->vid_dev->v4l2_dev,
1649                          "failed to change mode in streamoff\n");
1650
1651         INIT_LIST_HEAD(&vout->dma_queue);
1652         ret = videobuf_streamoff(&vout->vbq);
1653
1654         return ret;
1655 }
1656
1657 static int vidioc_s_fbuf(struct file *file, void *fh,
1658                                 const struct v4l2_framebuffer *a)
1659 {
1660         int enable = 0;
1661         struct omap_overlay *ovl;
1662         struct omapvideo_info *ovid;
1663         struct omap_vout_device *vout = video_drvdata(file);
1664         struct omap_overlay_manager_info info;
1665         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1666
1667         ovid = &vout->vid_info;
1668         ovl = ovid->overlays[0];
1669
1670         /* OMAP DSS doesn't support Source and Destination color
1671            key together */
1672         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1673                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1674                 return -EINVAL;
1675         /* OMAP DSS Doesn't support the Destination color key
1676            and alpha blending together */
1677         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1678                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1679                 return -EINVAL;
1680
1681         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1682                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1683                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1684         } else
1685                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1686
1687         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1688                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1689                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1690         } else
1691                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1692
1693         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1694                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1695                 enable = 1;
1696         else
1697                 enable = 0;
1698         if (ovl->manager && ovl->manager->get_manager_info &&
1699                         ovl->manager->set_manager_info) {
1700
1701                 ovl->manager->get_manager_info(ovl->manager, &info);
1702                 info.trans_enabled = enable;
1703                 info.trans_key_type = key_type;
1704                 info.trans_key = vout->win.chromakey;
1705
1706                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1707                         return -EINVAL;
1708         }
1709         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1710                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1711                 enable = 1;
1712         } else {
1713                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1714                 enable = 0;
1715         }
1716         if (ovl->manager && ovl->manager->get_manager_info &&
1717                         ovl->manager->set_manager_info) {
1718                 ovl->manager->get_manager_info(ovl->manager, &info);
1719                 /* enable this only if there is no zorder cap */
1720                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1721                         info.partial_alpha_enabled = enable;
1722                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1723                         return -EINVAL;
1724         }
1725
1726         return 0;
1727 }
1728
1729 static int vidioc_g_fbuf(struct file *file, void *fh,
1730                 struct v4l2_framebuffer *a)
1731 {
1732         struct omap_overlay *ovl;
1733         struct omapvideo_info *ovid;
1734         struct omap_vout_device *vout = video_drvdata(file);
1735         struct omap_overlay_manager_info info;
1736
1737         ovid = &vout->vid_info;
1738         ovl = ovid->overlays[0];
1739
1740         /* The video overlay must stay within the framebuffer and can't be
1741            positioned independently. */
1742         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1743         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1744                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1745
1746         if (ovl->manager && ovl->manager->get_manager_info) {
1747                 ovl->manager->get_manager_info(ovl->manager, &info);
1748                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1749                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1750                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1751                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1752         }
1753         if (ovl->manager && ovl->manager->get_manager_info) {
1754                 ovl->manager->get_manager_info(ovl->manager, &info);
1755                 if (info.partial_alpha_enabled)
1756                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1757         }
1758
1759         return 0;
1760 }
1761
1762 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1763         .vidioc_querycap                        = vidioc_querycap,
1764         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1765         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1766         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1767         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1768         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1769         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1770         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1771         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1772         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1773         .vidioc_g_selection                     = vidioc_g_selection,
1774         .vidioc_s_selection                     = vidioc_s_selection,
1775         .vidioc_reqbufs                         = vidioc_reqbufs,
1776         .vidioc_querybuf                        = vidioc_querybuf,
1777         .vidioc_qbuf                            = vidioc_qbuf,
1778         .vidioc_dqbuf                           = vidioc_dqbuf,
1779         .vidioc_streamon                        = vidioc_streamon,
1780         .vidioc_streamoff                       = vidioc_streamoff,
1781 };
1782
1783 static const struct v4l2_file_operations omap_vout_fops = {
1784         .owner          = THIS_MODULE,
1785         .poll           = omap_vout_poll,
1786         .unlocked_ioctl = video_ioctl2,
1787         .mmap           = omap_vout_mmap,
1788         .open           = omap_vout_open,
1789         .release        = omap_vout_release,
1790 };
1791
1792 /* Init functions used during driver initialization */
1793 /* Initial setup of video_data */
1794 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1795 {
1796         struct video_device *vfd;
1797         struct v4l2_pix_format *pix;
1798         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1799         struct omap_dss_device *display = ovl->get_device(ovl);
1800         struct v4l2_ctrl_handler *hdl;
1801
1802         /* set the default pix */
1803         pix = &vout->pix;
1804
1805         /* Set the default picture of QVGA  */
1806         pix->width = QQVGA_WIDTH;
1807         pix->height = QQVGA_HEIGHT;
1808
1809         /* Default pixel format is RGB 5-6-5 */
1810         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1811         pix->field = V4L2_FIELD_ANY;
1812         pix->bytesperline = pix->width * 2;
1813         pix->sizeimage = pix->bytesperline * pix->height;
1814         pix->colorspace = V4L2_COLORSPACE_JPEG;
1815
1816         vout->bpp = RGB565_BPP;
1817         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1818         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1819
1820         /* Set the data structures for the overlay parameters*/
1821         vout->win.global_alpha = 255;
1822         vout->fbuf.flags = 0;
1823         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1824                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1825         vout->win.chromakey = 0;
1826
1827         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1828
1829         hdl = &vout->ctrl_handler;
1830         v4l2_ctrl_handler_init(hdl, 3);
1831         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1832                           V4L2_CID_ROTATE, 0, 270, 90, 0);
1833         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1834                           V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1835         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1836                           V4L2_CID_VFLIP, 0, 1, 1, 0);
1837         if (hdl->error)
1838                 return hdl->error;
1839
1840         vout->rotation = 0;
1841         vout->mirror = false;
1842         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1843                 vout->vrfb_bpp = 2;
1844
1845         /* initialize the video_device struct */
1846         vfd = vout->vfd = video_device_alloc();
1847
1848         if (!vfd) {
1849                 printk(KERN_ERR VOUT_NAME
1850                        ": could not allocate video device struct\n");
1851                 v4l2_ctrl_handler_free(hdl);
1852                 return -ENOMEM;
1853         }
1854         vfd->ctrl_handler = hdl;
1855         vfd->release = video_device_release;
1856         vfd->ioctl_ops = &vout_ioctl_ops;
1857
1858         strscpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1859
1860         vfd->fops = &omap_vout_fops;
1861         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1862         vfd->vfl_dir = VFL_DIR_TX;
1863         vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1864                            V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1865         mutex_init(&vout->lock);
1866
1867         vfd->minor = -1;
1868         return 0;
1869
1870 }
1871
1872 /* Setup video buffers */
1873 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1874                 int vid_num)
1875 {
1876         u32 numbuffers;
1877         int ret = 0, i;
1878         struct omapvideo_info *ovid;
1879         struct omap_vout_device *vout;
1880         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1881         struct omap2video_device *vid_dev =
1882                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1883
1884         vout = vid_dev->vouts[vid_num];
1885         ovid = &vout->vid_info;
1886
1887         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1888         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1889         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1890
1891         for (i = 0; i < numbuffers; i++) {
1892                 vout->buf_virt_addr[i] =
1893                         omap_vout_alloc_buffer(vout->buffer_size,
1894                                         (u32 *) &vout->buf_phy_addr[i]);
1895                 if (!vout->buf_virt_addr[i]) {
1896                         numbuffers = i;
1897                         ret = -ENOMEM;
1898                         goto free_buffers;
1899                 }
1900         }
1901
1902         vout->cropped_offset = 0;
1903
1904         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1905                 bool static_vrfb_allocation = (vid_num == 0) ?
1906                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1907                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1908                                 static_vrfb_allocation);
1909         }
1910
1911         return ret;
1912
1913 free_buffers:
1914         for (i = 0; i < numbuffers; i++) {
1915                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1916                                                 vout->buffer_size);
1917                 vout->buf_virt_addr[i] = 0;
1918                 vout->buf_phy_addr[i] = 0;
1919         }
1920         return ret;
1921
1922 }
1923
1924 /* Create video out devices */
1925 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1926 {
1927         int ret = 0, k;
1928         struct omap_vout_device *vout;
1929         struct video_device *vfd = NULL;
1930         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1931         struct omap2video_device *vid_dev = container_of(v4l2_dev,
1932                         struct omap2video_device, v4l2_dev);
1933
1934         for (k = 0; k < pdev->num_resources; k++) {
1935
1936                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1937                 if (!vout) {
1938                         dev_err(&pdev->dev, ": could not allocate memory\n");
1939                         return -ENOMEM;
1940                 }
1941
1942                 vout->vid = k;
1943                 vid_dev->vouts[k] = vout;
1944                 vout->vid_dev = vid_dev;
1945                 /* Select video2 if only 1 overlay is controlled by V4L2 */
1946                 if (pdev->num_resources == 1)
1947                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1948                 else
1949                         /* Else select video1 and video2 one by one. */
1950                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1951                 vout->vid_info.num_overlays = 1;
1952                 vout->vid_info.id = k + 1;
1953
1954                 /* Set VRFB as rotation_type for omap2 and omap3 */
1955                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1956                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1957
1958                 /* Setup the default configuration for the video devices
1959                  */
1960                 if (omap_vout_setup_video_data(vout) != 0) {
1961                         ret = -ENOMEM;
1962                         goto error;
1963                 }
1964
1965                 /* Allocate default number of buffers for the video streaming
1966                  * and reserve the VRFB space for rotation
1967                  */
1968                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1969                         ret = -ENOMEM;
1970                         goto error1;
1971                 }
1972
1973                 /* Register the Video device with V4L2
1974                  */
1975                 vfd = vout->vfd;
1976                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
1977                         dev_err(&pdev->dev,
1978                                 ": Could not register Video for Linux device\n");
1979                         vfd->minor = -1;
1980                         ret = -ENODEV;
1981                         goto error2;
1982                 }
1983                 video_set_drvdata(vfd, vout);
1984
1985                 dev_info(&pdev->dev,
1986                          ": registered and initialized video device %d\n",
1987                          vfd->minor);
1988                 if (k == (pdev->num_resources - 1))
1989                         return 0;
1990
1991                 continue;
1992 error2:
1993                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1994                         omap_vout_release_vrfb(vout);
1995                 omap_vout_free_buffers(vout);
1996 error1:
1997                 video_device_release(vfd);
1998 error:
1999                 kfree(vout);
2000                 return ret;
2001         }
2002
2003         return -ENODEV;
2004 }
2005 /* Driver functions */
2006 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2007 {
2008         struct video_device *vfd;
2009         struct omapvideo_info *ovid;
2010
2011         if (!vout)
2012                 return;
2013
2014         vfd = vout->vfd;
2015         ovid = &vout->vid_info;
2016         if (vfd) {
2017                 if (!video_is_registered(vfd)) {
2018                         /*
2019                          * The device was never registered, so release the
2020                          * video_device struct directly.
2021                          */
2022                         video_device_release(vfd);
2023                 } else {
2024                         /*
2025                          * The unregister function will release the video_device
2026                          * struct as well as unregistering it.
2027                          */
2028                         video_unregister_device(vfd);
2029                 }
2030         }
2031         v4l2_ctrl_handler_free(&vout->ctrl_handler);
2032         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2033                 omap_vout_release_vrfb(vout);
2034                 /* Free the VRFB buffer if allocated
2035                  * init time
2036                  */
2037                 if (vout->vrfb_static_allocation)
2038                         omap_vout_free_vrfb_buffers(vout);
2039         }
2040         omap_vout_free_buffers(vout);
2041
2042         kfree(vout);
2043 }
2044
2045 static int omap_vout_remove(struct platform_device *pdev)
2046 {
2047         int k;
2048         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2049         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2050                         omap2video_device, v4l2_dev);
2051
2052         v4l2_device_unregister(v4l2_dev);
2053         for (k = 0; k < pdev->num_resources; k++)
2054                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2055
2056         for (k = 0; k < vid_dev->num_displays; k++) {
2057                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2058                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2059
2060                 omap_dss_put_device(vid_dev->displays[k]);
2061         }
2062         kfree(vid_dev);
2063         return 0;
2064 }
2065
2066 static int __init omap_vout_probe(struct platform_device *pdev)
2067 {
2068         int ret = 0, i;
2069         struct omap_overlay *ovl;
2070         struct omap_dss_device *dssdev = NULL;
2071         struct omap_dss_device *def_display;
2072         struct omap2video_device *vid_dev = NULL;
2073
2074         if (omapdss_is_initialized() == false)
2075                 return -EPROBE_DEFER;
2076
2077         ret = omapdss_compat_init();
2078         if (ret) {
2079                 dev_err(&pdev->dev, "failed to init dss\n");
2080                 return ret;
2081         }
2082
2083         if (pdev->num_resources == 0) {
2084                 dev_err(&pdev->dev, "probed for an unknown device\n");
2085                 ret = -ENODEV;
2086                 goto err_dss_init;
2087         }
2088
2089         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2090         if (vid_dev == NULL) {
2091                 ret = -ENOMEM;
2092                 goto err_dss_init;
2093         }
2094
2095         vid_dev->num_displays = 0;
2096         for_each_dss_dev(dssdev) {
2097                 omap_dss_get_device(dssdev);
2098
2099                 if (!dssdev->driver) {
2100                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2101                                         dssdev->name);
2102                         omap_dss_put_device(dssdev);
2103                         continue;
2104                 }
2105
2106                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2107         }
2108
2109         if (vid_dev->num_displays == 0) {
2110                 dev_err(&pdev->dev, "no displays\n");
2111                 ret = -EINVAL;
2112                 goto probe_err0;
2113         }
2114
2115         vid_dev->num_overlays = omap_dss_get_num_overlays();
2116         for (i = 0; i < vid_dev->num_overlays; i++)
2117                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2118
2119         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2120         for (i = 0; i < vid_dev->num_managers; i++)
2121                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2122
2123         /* Get the Video1 overlay and video2 overlay.
2124          * Setup the Display attached to that overlays
2125          */
2126         for (i = 1; i < vid_dev->num_overlays; i++) {
2127                 ovl = omap_dss_get_overlay(i);
2128                 dssdev = ovl->get_device(ovl);
2129
2130                 if (dssdev) {
2131                         def_display = dssdev;
2132                 } else {
2133                         dev_warn(&pdev->dev, "cannot find display\n");
2134                         def_display = NULL;
2135                 }
2136                 if (def_display) {
2137                         struct omap_dss_driver *dssdrv = def_display->driver;
2138
2139                         ret = dssdrv->enable(def_display);
2140                         if (ret) {
2141                                 /* Here we are not considering a error
2142                                  *  as display may be enabled by frame
2143                                  *  buffer driver
2144                                  */
2145                                 dev_warn(&pdev->dev,
2146                                         "'%s' Display already enabled\n",
2147                                         def_display->name);
2148                         }
2149                 }
2150         }
2151
2152         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2153                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2154                 ret = -ENODEV;
2155                 goto probe_err1;
2156         }
2157
2158         ret = omap_vout_create_video_devices(pdev);
2159         if (ret)
2160                 goto probe_err2;
2161
2162         for (i = 0; i < vid_dev->num_displays; i++) {
2163                 struct omap_dss_device *display = vid_dev->displays[i];
2164
2165                 if (display->driver->update)
2166                         display->driver->update(display, 0, 0,
2167                                         display->panel.timings.x_res,
2168                                         display->panel.timings.y_res);
2169         }
2170         return 0;
2171
2172 probe_err2:
2173         v4l2_device_unregister(&vid_dev->v4l2_dev);
2174 probe_err1:
2175         for (i = 1; i < vid_dev->num_overlays; i++) {
2176                 def_display = NULL;
2177                 ovl = omap_dss_get_overlay(i);
2178                 dssdev = ovl->get_device(ovl);
2179
2180                 if (dssdev)
2181                         def_display = dssdev;
2182
2183                 if (def_display && def_display->driver)
2184                         def_display->driver->disable(def_display);
2185         }
2186 probe_err0:
2187         kfree(vid_dev);
2188 err_dss_init:
2189         omapdss_compat_uninit();
2190         return ret;
2191 }
2192
2193 static struct platform_driver omap_vout_driver = {
2194         .driver = {
2195                 .name = VOUT_NAME,
2196         },
2197         .remove = omap_vout_remove,
2198 };
2199
2200 static int __init omap_vout_init(void)
2201 {
2202         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2203                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2204                 return -EINVAL;
2205         }
2206         return 0;
2207 }
2208
2209 static void omap_vout_cleanup(void)
2210 {
2211         platform_driver_unregister(&omap_vout_driver);
2212 }
2213
2214 late_initcall(omap_vout_init);
2215 module_exit(omap_vout_cleanup);