drivers/media/platform/omap/omap_vout.c

   1 /*
   2  * omap_vout.c
   3  *
   4  * Copyright (C) 2005-2010 Texas Instruments.
   5  *
   6  * This file is licensed under the terms of the GNU General Public License
   7  * version 2. This program is licensed "as is" without any warranty of any
   8  * kind, whether express or implied.
   9  *
  10  * Leveraged code from the OMAP2 camera driver
  11  * Video-for-Linux (Version 2) camera capture driver for
  12  * the OMAP24xx camera controller.
  13  *
  14  * Author: Andy Lowe (source@mvista.com)
  15  *
  16  * Copyright (C) 2004 MontaVista Software, Inc.
  17  * Copyright (C) 2010 Texas Instruments.
  18  *
  19  * History:
  20  * 20-APR-2006 Khasim           Modified VRFB based Rotation,
  21  *                              The image data is always read from 0 degree
  22  *                              view and written
  23  *                              to the virtual space of desired rotation angle
  24  * 4-DEC-2006  Jian             Changed to support better memory management
  25  *
  26  * 17-Nov-2008 Hardik           Changed driver to use video_ioctl2
  27  *
  28  * 23-Feb-2010 Vaibhav H        Modified to use new DSS2 interface
  29  *
  30  */
  31
  32 #include <linux/init.h>
  33 #include <linux/module.h>
  34 #include <linux/vmalloc.h>
  35 #include <linux/sched.h>
  36 #include <linux/types.h>
  37 #include <linux/platform_device.h>
  38 #include <linux/irq.h>
  39 #include <linux/videodev2.h>
  40 #include <linux/dma-mapping.h>
  41 #include <linux/slab.h>
  42
  43 #include <media/videobuf-dma-contig.h>
  44 #include <media/v4l2-device.h>
  45 #include <media/v4l2-ioctl.h>
  46
  47 #include <video/omapvrfb.h>
  48 #include <video/omapdss.h>
  49
  50 #include "omap_voutlib.h"
  51 #include "omap_voutdef.h"
  52 #include "omap_vout_vrfb.h"
  53
  54 MODULE_AUTHOR("Texas Instruments");
  55 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
  56 MODULE_LICENSE("GPL");
  57
  58 /* Driver Configuration macros */
  59 #define VOUT_NAME               "omap_vout"
  60
  61 enum omap_vout_channels {
  62         OMAP_VIDEO1,
  63         OMAP_VIDEO2,
  64 };
  65
  66 static struct videobuf_queue_ops video_vbq_ops;
  67 /* Variables configurable through module params*/
  68 static u32 video1_numbuffers = 3;
  69 static u32 video2_numbuffers = 3;
  70 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  71 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
  72 static bool vid1_static_vrfb_alloc;
  73 static bool vid2_static_vrfb_alloc;
  74 static bool debug;
  75
  76 /* Module parameters */
  77 module_param(video1_numbuffers, uint, S_IRUGO);
  78 MODULE_PARM_DESC(video1_numbuffers,
  79         "Number of buffers to be allocated at init time for Video1 device.");
  80
  81 module_param(video2_numbuffers, uint, S_IRUGO);
  82 MODULE_PARM_DESC(video2_numbuffers,
  83         "Number of buffers to be allocated at init time for Video2 device.");
  84
  85 module_param(video1_bufsize, uint, S_IRUGO);
  86 MODULE_PARM_DESC(video1_bufsize,
  87         "Size of the buffer to be allocated for video1 device");
  88
  89 module_param(video2_bufsize, uint, S_IRUGO);
  90 MODULE_PARM_DESC(video2_bufsize,
  91         "Size of the buffer to be allocated for video2 device");
  92
  93 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
  94 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
  95         "Static allocation of the VRFB buffer for video1 device");
  96
  97 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
  98 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
  99         "Static allocation of the VRFB buffer for video2 device");
 100
 101 module_param(debug, bool, S_IRUGO);
 102 MODULE_PARM_DESC(debug, "Debug level (0-1)");
 103
 104 /* list of image formats supported by OMAP2 video pipelines */
 105 static const struct v4l2_fmtdesc omap_formats[] = {
 106         {
 107                 /* Note:  V4L2 defines RGB565 as:
 108                  *
 109                  *      Byte 0                    Byte 1
 110                  *      g2 g1 g0 r4 r3 r2 r1 r0   b4 b3 b2 b1 b0 g5 g4 g3
 111                  *
 112                  * We interpret RGB565 as:
 113                  *
 114                  *      Byte 0                    Byte 1
 115                  *      g2 g1 g0 b4 b3 b2 b1 b0   r4 r3 r2 r1 r0 g5 g4 g3
 116                  */
 117                 .description = "RGB565, le",
 118                 .pixelformat = V4L2_PIX_FMT_RGB565,
 119         },
 120         {
 121                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
 122                  *  this for RGB24 unpack mode, the last 8 bits are ignored
 123                  * */
 124                 .description = "RGB32, le",
 125                 .pixelformat = V4L2_PIX_FMT_RGB32,
 126         },
 127         {
 128                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
 129                  *        this for RGB24 packed mode
 130                  *
 131                  */
 132                 .description = "RGB24, le",
 133                 .pixelformat = V4L2_PIX_FMT_RGB24,
 134         },
 135         {
 136                 .description = "YUYV (YUV 4:2:2), packed",
 137                 .pixelformat = V4L2_PIX_FMT_YUYV,
 138         },
 139         {
 140                 .description = "UYVY, packed",
 141                 .pixelformat = V4L2_PIX_FMT_UYVY,
 142         },
 143 };
 144
 145 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
 146
 147 /*
 148  * Try format
 149  */
 150 static int omap_vout_try_format(struct v4l2_pix_format *pix)
 151 {
 152         int ifmt, bpp = 0;
 153
 154         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
 155                                                 (u32)VID_MAX_HEIGHT);
 156         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
 157
 158         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
 159                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
 160                         break;
 161         }
 162
 163         if (ifmt == NUM_OUTPUT_FORMATS)
 164                 ifmt = 0;
 165
 166         pix->pixelformat = omap_formats[ifmt].pixelformat;
 167         pix->field = V4L2_FIELD_ANY;
 168         pix->priv = 0;
 169
 170         switch (pix->pixelformat) {
 171         case V4L2_PIX_FMT_YUYV:
 172         case V4L2_PIX_FMT_UYVY:
 173         default:
 174                 pix->colorspace = V4L2_COLORSPACE_JPEG;
 175                 bpp = YUYV_BPP;
 176                 break;
 177         case V4L2_PIX_FMT_RGB565:
 178         case V4L2_PIX_FMT_RGB565X:
 179                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 180                 bpp = RGB565_BPP;
 181                 break;
 182         case V4L2_PIX_FMT_RGB24:
 183                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 184                 bpp = RGB24_BPP;
 185                 break;
 186         case V4L2_PIX_FMT_RGB32:
 187         case V4L2_PIX_FMT_BGR32:
 188                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 189                 bpp = RGB32_BPP;
 190                 break;
 191         }
 192         pix->bytesperline = pix->width * bpp;
 193         pix->sizeimage = pix->bytesperline * pix->height;
 194
 195         return bpp;
 196 }
 197
 198 /*
 199  * omap_vout_uservirt_to_phys: This inline function is used to convert user
 200  * space virtual address to physical address.
 201  */
 202 static u32 omap_vout_uservirt_to_phys(u32 virtp)
 203 {
 204         unsigned long physp = 0;
 205         struct vm_area_struct *vma;
 206         struct mm_struct *mm = current->mm;
 207
 208         /* For kernel direct-mapped memory, take the easy way */
 209         if (virtp >= PAGE_OFFSET)
 210                 return virt_to_phys((void *) virtp);
 211
 212         down_read(&current->mm->mmap_sem);
 213         vma = find_vma(mm, virtp);
 214         if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
 215                 /* this will catch, kernel-allocated, mmaped-to-usermode
 216                    addresses */
 217                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
 218                 up_read(&current->mm->mmap_sem);
 219         } else {
 220                 /* otherwise, use get_user_pages() for general userland pages */
 221                 int res, nr_pages = 1;
 222                 struct page *pages;
 223
 224                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
 225                                 0, &pages, NULL);
 226                 up_read(&current->mm->mmap_sem);
 227
 228                 if (res == nr_pages) {
 229                         physp =  __pa(page_address(&pages[0]) +
 230                                         (virtp & ~PAGE_MASK));
 231                 } else {
 232                         printk(KERN_WARNING VOUT_NAME
 233                                         "get_user_pages failed\n");
 234                         return 0;
 235                 }
 236         }
 237
 238         return physp;
 239 }
 240
 241 /*
 242  * Free the V4L2 buffers
 243  */
 244 void omap_vout_free_buffers(struct omap_vout_device *vout)
 245 {
 246         int i, numbuffers;
 247
 248         /* Allocate memory for the buffers */
 249         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
 250         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
 251
 252         for (i = 0; i < numbuffers; i++) {
 253                 omap_vout_free_buffer(vout->buf_virt_addr[i],
 254                                 vout->buffer_size);
 255                 vout->buf_phy_addr[i] = 0;
 256                 vout->buf_virt_addr[i] = 0;
 257         }
 258 }
 259
 260 /*
 261  * Convert V4L2 rotation to DSS rotation
 262  *      V4L2 understand 0, 90, 180, 270.
 263  *      Convert to 0, 1, 2 and 3 respectively for DSS
 264  */
 265 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
 266                         enum dss_rotation *rotation, bool mirror)
 267 {
 268         int ret = 0;
 269
 270         switch (v4l2_rotation) {
 271         case 90:
 272                 *rotation = dss_rotation_90_degree;
 273                 break;
 274         case 180:
 275                 *rotation = dss_rotation_180_degree;
 276                 break;
 277         case 270:
 278                 *rotation = dss_rotation_270_degree;
 279                 break;
 280         case 0:
 281                 *rotation = dss_rotation_0_degree;
 282                 break;
 283         default:
 284                 ret = -EINVAL;
 285         }
 286         return ret;
 287 }
 288
 289 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
 290 {
 291         struct omapvideo_info *ovid;
 292         struct v4l2_rect *crop = &vout->crop;
 293         struct v4l2_pix_format *pix = &vout->pix;
 294         int *cropped_offset = &vout->cropped_offset;
 295         int ps = 2, line_length = 0;
 296
 297         ovid = &vout->vid_info;
 298
 299         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 300                 omap_vout_calculate_vrfb_offset(vout);
 301         } else {
 302                 vout->line_length = line_length = pix->width;
 303
 304                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
 305                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
 306                         ps = 2;
 307                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
 308                         ps = 4;
 309                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
 310                         ps = 3;
 311
 312                 vout->ps = ps;
 313
 314                 *cropped_offset = (line_length * ps) *
 315                         crop->top + crop->left * ps;
 316         }
 317
 318         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
 319                         __func__, vout->cropped_offset);
 320
 321         return 0;
 322 }
 323
 324 /*
 325  * Convert V4L2 pixel format to DSS pixel format
 326  */
 327 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
 328 {
 329         struct omap_overlay *ovl;
 330         struct omapvideo_info *ovid;
 331         struct v4l2_pix_format *pix = &vout->pix;
 332         enum omap_color_mode mode;
 333
 334         ovid = &vout->vid_info;
 335         ovl = ovid->overlays[0];
 336
 337         switch (pix->pixelformat) {
 338         case 0:
 339                 break;
 340         case V4L2_PIX_FMT_YUYV:
 341                 mode = OMAP_DSS_COLOR_YUV2;
 342                 break;
 343         case V4L2_PIX_FMT_UYVY:
 344                 mode = OMAP_DSS_COLOR_UYVY;
 345                 break;
 346         case V4L2_PIX_FMT_RGB565:
 347                 mode = OMAP_DSS_COLOR_RGB16;
 348                 break;
 349         case V4L2_PIX_FMT_RGB24:
 350                 mode = OMAP_DSS_COLOR_RGB24P;
 351                 break;
 352         case V4L2_PIX_FMT_RGB32:
 353                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
 354                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
 355                 break;
 356         case V4L2_PIX_FMT_BGR32:
 357                 mode = OMAP_DSS_COLOR_RGBX32;
 358                 break;
 359         default:
 360                 mode = -EINVAL;
 361         }
 362         return mode;
 363 }
 364
 365 /*
 366  * Setup the overlay
 367  */
 368 static int omapvid_setup_overlay(struct omap_vout_device *vout,
 369                 struct omap_overlay *ovl, int posx, int posy, int outw,
 370                 int outh, u32 addr)
 371 {
 372         int ret = 0;
 373         struct omap_overlay_info info;
 374         int cropheight, cropwidth, pixheight, pixwidth;
 375
 376         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
 377                         (outw != vout->pix.width || outh != vout->pix.height)) {
 378                 ret = -EINVAL;
 379                 goto setup_ovl_err;
 380         }
 381
 382         vout->dss_mode = video_mode_to_dss_mode(vout);
 383         if (vout->dss_mode == -EINVAL) {
 384                 ret = -EINVAL;
 385                 goto setup_ovl_err;
 386         }
 387
 388         /* Setup the input plane parameters according to
 389          * rotation value selected.
 390          */
 391         if (is_rotation_90_or_270(vout)) {
 392                 cropheight = vout->crop.width;
 393                 cropwidth = vout->crop.height;
 394                 pixheight = vout->pix.width;
 395                 pixwidth = vout->pix.height;
 396         } else {
 397                 cropheight = vout->crop.height;
 398                 cropwidth = vout->crop.width;
 399                 pixheight = vout->pix.height;
 400                 pixwidth = vout->pix.width;
 401         }
 402
 403         ovl->get_overlay_info(ovl, &info);
 404         info.paddr = addr;
 405         info.width = cropwidth;
 406         info.height = cropheight;
 407         info.color_mode = vout->dss_mode;
 408         info.mirror = vout->mirror;
 409         info.pos_x = posx;
 410         info.pos_y = posy;
 411         info.out_width = outw;
 412         info.out_height = outh;
 413         info.global_alpha = vout->win.global_alpha;
 414         if (!is_rotation_enabled(vout)) {
 415                 info.rotation = 0;
 416                 info.rotation_type = OMAP_DSS_ROT_DMA;
 417                 info.screen_width = pixwidth;
 418         } else {
 419                 info.rotation = vout->rotation;
 420                 info.rotation_type = OMAP_DSS_ROT_VRFB;
 421                 info.screen_width = 2048;
 422         }
 423
 424         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 425                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
 426                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
 427                 "out_height=%d rotation_type=%d screen_width=%d\n",
 428                 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
 429                 info.color_mode, info.rotation, info.mirror, info.pos_x,
 430                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
 431                 info.screen_width);
 432
 433         ret = ovl->set_overlay_info(ovl, &info);
 434         if (ret)
 435                 goto setup_ovl_err;
 436
 437         return 0;
 438
 439 setup_ovl_err:
 440         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
 441         return ret;
 442 }
 443
 444 /*
 445  * Initialize the overlay structure
 446  */
 447 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
 448 {
 449         int ret = 0, i;
 450         struct v4l2_window *win;
 451         struct omap_overlay *ovl;
 452         int posx, posy, outw, outh, temp;
 453         struct omap_video_timings *timing;
 454         struct omapvideo_info *ovid = &vout->vid_info;
 455
 456         win = &vout->win;
 457         for (i = 0; i < ovid->num_overlays; i++) {
 458                 struct omap_dss_device *dssdev;
 459
 460                 ovl = ovid->overlays[i];
 461                 dssdev = ovl->get_device(ovl);
 462
 463                 if (!dssdev)
 464                         return -EINVAL;
 465
 466                 timing = &dssdev->panel.timings;
 467
 468                 outw = win->w.width;
 469                 outh = win->w.height;
 470                 switch (vout->rotation) {
 471                 case dss_rotation_90_degree:
 472                         /* Invert the height and width for 90
 473                          * and 270 degree rotation
 474                          */
 475                         temp = outw;
 476                         outw = outh;
 477                         outh = temp;
 478                         posy = (timing->y_res - win->w.width) - win->w.left;
 479                         posx = win->w.top;
 480                         break;
 481
 482                 case dss_rotation_180_degree:
 483                         posx = (timing->x_res - win->w.width) - win->w.left;
 484                         posy = (timing->y_res - win->w.height) - win->w.top;
 485                         break;
 486
 487                 case dss_rotation_270_degree:
 488                         temp = outw;
 489                         outw = outh;
 490                         outh = temp;
 491                         posy = win->w.left;
 492                         posx = (timing->x_res - win->w.height) - win->w.top;
 493                         break;
 494
 495                 default:
 496                         posx = win->w.left;
 497                         posy = win->w.top;
 498                         break;
 499                 }
 500
 501                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
 502                                 outw, outh, addr);
 503                 if (ret)
 504                         goto omapvid_init_err;
 505         }
 506         return 0;
 507
 508 omapvid_init_err:
 509         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
 510         return ret;
 511 }
 512
 513 /*
 514  * Apply the changes set the go bit of DSS
 515  */
 516 static int omapvid_apply_changes(struct omap_vout_device *vout)
 517 {
 518         int i;
 519         struct omap_overlay *ovl;
 520         struct omapvideo_info *ovid = &vout->vid_info;
 521
 522         for (i = 0; i < ovid->num_overlays; i++) {
 523                 struct omap_dss_device *dssdev;
 524
 525                 ovl = ovid->overlays[i];
 526                 dssdev = ovl->get_device(ovl);
 527                 if (!dssdev)
 528                         return -EINVAL;
 529                 ovl->manager->apply(ovl->manager);
 530         }
 531
 532         return 0;
 533 }
 534
 535 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
 536                 unsigned int irqstatus, struct timeval timevalue)
 537 {
 538         u32 fid;
 539
 540         if (vout->first_int) {
 541                 vout->first_int = 0;
 542                 goto err;
 543         }
 544
 545         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
 546                 fid = 1;
 547         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
 548                 fid = 0;
 549         else
 550                 goto err;
 551
 552         vout->field_id ^= 1;
 553         if (fid != vout->field_id) {
 554                 if (fid == 0)
 555                         vout->field_id = fid;
 556         } else if (0 == fid) {
 557                 if (vout->cur_frm == vout->next_frm)
 558                         goto err;
 559
 560                 vout->cur_frm->ts = timevalue;
 561                 vout->cur_frm->state = VIDEOBUF_DONE;
 562                 wake_up_interruptible(&vout->cur_frm->done);
 563                 vout->cur_frm = vout->next_frm;
 564         } else {
 565                 if (list_empty(&vout->dma_queue) ||
 566                                 (vout->cur_frm != vout->next_frm))
 567                         goto err;
 568         }
 569
 570         return vout->field_id;
 571 err:
 572         return 0;
 573 }
 574
 575 static void omap_vout_isr(void *arg, unsigned int irqstatus)
 576 {
 577         int ret, fid, mgr_id;
 578         u32 addr, irq;
 579         struct omap_overlay *ovl;
 580         struct timeval timevalue;
 581         struct omapvideo_info *ovid;
 582         struct omap_dss_device *cur_display;
 583         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
 584
 585         if (!vout->streaming)
 586                 return;
 587
 588         ovid = &vout->vid_info;
 589         ovl = ovid->overlays[0];
 590
 591         mgr_id = ovl->manager->id;
 592
 593         /* get the display device attached to the overlay */
 594         cur_display = ovl->get_device(ovl);
 595
 596         if (!cur_display)
 597                 return;
 598
 599         spin_lock(&vout->vbq_lock);
 600         v4l2_get_timestamp(&timevalue);
 601
 602         switch (cur_display->type) {
 603         case OMAP_DISPLAY_TYPE_DSI:
 604         case OMAP_DISPLAY_TYPE_DPI:
 605                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
 606                         irq = DISPC_IRQ_VSYNC;
 607                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
 608                         irq = DISPC_IRQ_VSYNC2;
 609                 else
 610                         goto vout_isr_err;
 611
 612                 if (!(irqstatus & irq))
 613                         goto vout_isr_err;
 614                 break;
 615         case OMAP_DISPLAY_TYPE_VENC:
 616                 fid = omapvid_handle_interlace_display(vout, irqstatus,
 617                                 timevalue);
 618                 if (!fid)
 619                         goto vout_isr_err;
 620                 break;
 621         case OMAP_DISPLAY_TYPE_HDMI:
 622                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
 623                         goto vout_isr_err;
 624                 break;
 625         default:
 626                 goto vout_isr_err;
 627         }
 628
 629         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
 630                 vout->cur_frm->ts = timevalue;
 631                 vout->cur_frm->state = VIDEOBUF_DONE;
 632                 wake_up_interruptible(&vout->cur_frm->done);
 633                 vout->cur_frm = vout->next_frm;
 634         }
 635
 636         vout->first_int = 0;
 637         if (list_empty(&vout->dma_queue))
 638                 goto vout_isr_err;
 639
 640         vout->next_frm = list_entry(vout->dma_queue.next,
 641                         struct videobuf_buffer, queue);
 642         list_del(&vout->next_frm->queue);
 643
 644         vout->next_frm->state = VIDEOBUF_ACTIVE;
 645
 646         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
 647                 + vout->cropped_offset;
 648
 649         /* First save the configuration in ovelray structure */
 650         ret = omapvid_init(vout, addr);
 651         if (ret)
 652                 printk(KERN_ERR VOUT_NAME
 653                         "failed to set overlay info\n");
 654         /* 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                 u32 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 = 0;
 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->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1058                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1059
1060         return 0;
1061 }
1062
1063 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1064                         struct v4l2_fmtdesc *fmt)
1065 {
1066         int index = fmt->index;
1067
1068         if (index >= NUM_OUTPUT_FORMATS)
1069                 return -EINVAL;
1070
1071         fmt->flags = omap_formats[index].flags;
1072         strlcpy(fmt->description, omap_formats[index].description,
1073                         sizeof(fmt->description));
1074         fmt->pixelformat = omap_formats[index].pixelformat;
1075
1076         return 0;
1077 }
1078
1079 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1080                         struct v4l2_format *f)
1081 {
1082         struct omap_vout_device *vout = fh;
1083
1084         f->fmt.pix = vout->pix;
1085         return 0;
1086
1087 }
1088
1089 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1090                         struct v4l2_format *f)
1091 {
1092         struct omap_overlay *ovl;
1093         struct omapvideo_info *ovid;
1094         struct omap_video_timings *timing;
1095         struct omap_vout_device *vout = fh;
1096         struct omap_dss_device *dssdev;
1097
1098         ovid = &vout->vid_info;
1099         ovl = ovid->overlays[0];
1100         /* get the display device attached to the overlay */
1101         dssdev = ovl->get_device(ovl);
1102
1103         if (!dssdev)
1104                 return -EINVAL;
1105
1106         timing = &dssdev->panel.timings;
1107
1108         vout->fbuf.fmt.height = timing->y_res;
1109         vout->fbuf.fmt.width = timing->x_res;
1110
1111         omap_vout_try_format(&f->fmt.pix);
1112         return 0;
1113 }
1114
1115 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1116                         struct v4l2_format *f)
1117 {
1118         int ret, bpp;
1119         struct omap_overlay *ovl;
1120         struct omapvideo_info *ovid;
1121         struct omap_video_timings *timing;
1122         struct omap_vout_device *vout = fh;
1123         struct omap_dss_device *dssdev;
1124
1125         if (vout->streaming)
1126                 return -EBUSY;
1127
1128         mutex_lock(&vout->lock);
1129
1130         ovid = &vout->vid_info;
1131         ovl = ovid->overlays[0];
1132         dssdev = ovl->get_device(ovl);
1133
1134         /* get the display device attached to the overlay */
1135         if (!dssdev) {
1136                 ret = -EINVAL;
1137                 goto s_fmt_vid_out_exit;
1138         }
1139         timing = &dssdev->panel.timings;
1140
1141         /* We dont support RGB24-packed mode if vrfb rotation
1142          * is enabled*/
1143         if ((is_rotation_enabled(vout)) &&
1144                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1145                 ret = -EINVAL;
1146                 goto s_fmt_vid_out_exit;
1147         }
1148
1149         /* get the framebuffer parameters */
1150
1151         if (is_rotation_90_or_270(vout)) {
1152                 vout->fbuf.fmt.height = timing->x_res;
1153                 vout->fbuf.fmt.width = timing->y_res;
1154         } else {
1155                 vout->fbuf.fmt.height = timing->y_res;
1156                 vout->fbuf.fmt.width = timing->x_res;
1157         }
1158
1159         /* change to samller size is OK */
1160
1161         bpp = omap_vout_try_format(&f->fmt.pix);
1162         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1163
1164         /* try & set the new output format */
1165         vout->bpp = bpp;
1166         vout->pix = f->fmt.pix;
1167         vout->vrfb_bpp = 1;
1168
1169         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1170         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1171                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1172                 vout->vrfb_bpp = 2;
1173
1174         /* set default crop and win */
1175         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1176
1177         ret = 0;
1178
1179 s_fmt_vid_out_exit:
1180         mutex_unlock(&vout->lock);
1181         return ret;
1182 }
1183
1184 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1185                         struct v4l2_format *f)
1186 {
1187         int ret = 0;
1188         struct omap_vout_device *vout = fh;
1189         struct omap_overlay *ovl;
1190         struct omapvideo_info *ovid;
1191         struct v4l2_window *win = &f->fmt.win;
1192
1193         ovid = &vout->vid_info;
1194         ovl = ovid->overlays[0];
1195
1196         ret = omap_vout_try_window(&vout->fbuf, win);
1197
1198         if (!ret) {
1199                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1200                         win->global_alpha = 255;
1201                 else
1202                         win->global_alpha = f->fmt.win.global_alpha;
1203         }
1204
1205         return ret;
1206 }
1207
1208 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1209                         struct v4l2_format *f)
1210 {
1211         int ret = 0;
1212         struct omap_overlay *ovl;
1213         struct omapvideo_info *ovid;
1214         struct omap_vout_device *vout = fh;
1215         struct v4l2_window *win = &f->fmt.win;
1216
1217         mutex_lock(&vout->lock);
1218         ovid = &vout->vid_info;
1219         ovl = ovid->overlays[0];
1220
1221         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1222         if (!ret) {
1223                 /* Video1 plane does not support global alpha on OMAP3 */
1224                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1225                         vout->win.global_alpha = 255;
1226                 else
1227                         vout->win.global_alpha = f->fmt.win.global_alpha;
1228
1229                 vout->win.chromakey = f->fmt.win.chromakey;
1230         }
1231         mutex_unlock(&vout->lock);
1232         return ret;
1233 }
1234
1235 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1236                         struct v4l2_format *f)
1237 {
1238         u32 key_value =  0;
1239         struct omap_overlay *ovl;
1240         struct omapvideo_info *ovid;
1241         struct omap_vout_device *vout = fh;
1242         struct omap_overlay_manager_info info;
1243         struct v4l2_window *win = &f->fmt.win;
1244
1245         ovid = &vout->vid_info;
1246         ovl = ovid->overlays[0];
1247
1248         win->w = vout->win.w;
1249         win->field = vout->win.field;
1250         win->global_alpha = vout->win.global_alpha;
1251
1252         if (ovl->manager && ovl->manager->get_manager_info) {
1253                 ovl->manager->get_manager_info(ovl->manager, &info);
1254                 key_value = info.trans_key;
1255         }
1256         win->chromakey = key_value;
1257         return 0;
1258 }
1259
1260 static int vidioc_cropcap(struct file *file, void *fh,
1261                 struct v4l2_cropcap *cropcap)
1262 {
1263         struct omap_vout_device *vout = fh;
1264         struct v4l2_pix_format *pix = &vout->pix;
1265
1266         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1267                 return -EINVAL;
1268
1269         /* Width and height are always even */
1270         cropcap->bounds.width = pix->width & ~1;
1271         cropcap->bounds.height = pix->height & ~1;
1272
1273         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1274         cropcap->pixelaspect.numerator = 1;
1275         cropcap->pixelaspect.denominator = 1;
1276         return 0;
1277 }
1278
1279 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1280 {
1281         struct omap_vout_device *vout = fh;
1282
1283         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1284                 return -EINVAL;
1285         crop->c = vout->crop;
1286         return 0;
1287 }
1288
1289 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1290 {
1291         int ret = -EINVAL;
1292         struct omap_vout_device *vout = fh;
1293         struct omapvideo_info *ovid;
1294         struct omap_overlay *ovl;
1295         struct omap_video_timings *timing;
1296         struct omap_dss_device *dssdev;
1297
1298         if (vout->streaming)
1299                 return -EBUSY;
1300
1301         mutex_lock(&vout->lock);
1302         ovid = &vout->vid_info;
1303         ovl = ovid->overlays[0];
1304         /* get the display device attached to the overlay */
1305         dssdev = ovl->get_device(ovl);
1306
1307         if (!dssdev) {
1308                 ret = -EINVAL;
1309                 goto s_crop_err;
1310         }
1311
1312         timing = &dssdev->panel.timings;
1313
1314         if (is_rotation_90_or_270(vout)) {
1315                 vout->fbuf.fmt.height = timing->x_res;
1316                 vout->fbuf.fmt.width = timing->y_res;
1317         } else {
1318                 vout->fbuf.fmt.height = timing->y_res;
1319                 vout->fbuf.fmt.width = timing->x_res;
1320         }
1321
1322         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1323                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1324                                 &vout->fbuf, &crop->c);
1325
1326 s_crop_err:
1327         mutex_unlock(&vout->lock);
1328         return ret;
1329 }
1330
1331 static int vidioc_queryctrl(struct file *file, void *fh,
1332                 struct v4l2_queryctrl *ctrl)
1333 {
1334         int ret = 0;
1335
1336         switch (ctrl->id) {
1337         case V4L2_CID_ROTATE:
1338                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1339                 break;
1340         case V4L2_CID_BG_COLOR:
1341                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1342                 break;
1343         case V4L2_CID_VFLIP:
1344                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1345                 break;
1346         default:
1347                 ctrl->name[0] = '\0';
1348                 ret = -EINVAL;
1349         }
1350         return ret;
1351 }
1352
1353 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1354 {
1355         int ret = 0;
1356         struct omap_vout_device *vout = fh;
1357
1358         switch (ctrl->id) {
1359         case V4L2_CID_ROTATE:
1360                 ctrl->value = vout->control[0].value;
1361                 break;
1362         case V4L2_CID_BG_COLOR:
1363         {
1364                 struct omap_overlay_manager_info info;
1365                 struct omap_overlay *ovl;
1366
1367                 ovl = vout->vid_info.overlays[0];
1368                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1369                         ret = -EINVAL;
1370                         break;
1371                 }
1372
1373                 ovl->manager->get_manager_info(ovl->manager, &info);
1374                 ctrl->value = info.default_color;
1375                 break;
1376         }
1377         case V4L2_CID_VFLIP:
1378                 ctrl->value = vout->control[2].value;
1379                 break;
1380         default:
1381                 ret = -EINVAL;
1382         }
1383         return ret;
1384 }
1385
1386 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1387 {
1388         int ret = 0;
1389         struct omap_vout_device *vout = fh;
1390
1391         switch (a->id) {
1392         case V4L2_CID_ROTATE:
1393         {
1394                 struct omapvideo_info *ovid;
1395                 int rotation = a->value;
1396
1397                 ovid = &vout->vid_info;
1398
1399                 mutex_lock(&vout->lock);
1400                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1401                         mutex_unlock(&vout->lock);
1402                         ret = -ERANGE;
1403                         break;
1404                 }
1405
1406                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1407                         mutex_unlock(&vout->lock);
1408                         ret = -EINVAL;
1409                         break;
1410                 }
1411
1412                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1413                                                         vout->mirror)) {
1414                         mutex_unlock(&vout->lock);
1415                         ret = -EINVAL;
1416                         break;
1417                 }
1418
1419                 vout->control[0].value = rotation;
1420                 mutex_unlock(&vout->lock);
1421                 break;
1422         }
1423         case V4L2_CID_BG_COLOR:
1424         {
1425                 struct omap_overlay *ovl;
1426                 unsigned int  color = a->value;
1427                 struct omap_overlay_manager_info info;
1428
1429                 ovl = vout->vid_info.overlays[0];
1430
1431                 mutex_lock(&vout->lock);
1432                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1433                         mutex_unlock(&vout->lock);
1434                         ret = -EINVAL;
1435                         break;
1436                 }
1437
1438                 ovl->manager->get_manager_info(ovl->manager, &info);
1439                 info.default_color = color;
1440                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1441                         mutex_unlock(&vout->lock);
1442                         ret = -EINVAL;
1443                         break;
1444                 }
1445
1446                 vout->control[1].value = color;
1447                 mutex_unlock(&vout->lock);
1448                 break;
1449         }
1450         case V4L2_CID_VFLIP:
1451         {
1452                 struct omap_overlay *ovl;
1453                 struct omapvideo_info *ovid;
1454                 unsigned int  mirror = a->value;
1455
1456                 ovid = &vout->vid_info;
1457                 ovl = ovid->overlays[0];
1458
1459                 mutex_lock(&vout->lock);
1460                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1461                         mutex_unlock(&vout->lock);
1462                         ret = -ERANGE;
1463                         break;
1464                 }
1465
1466                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1467                         mutex_unlock(&vout->lock);
1468                         ret = -EINVAL;
1469                         break;
1470                 }
1471                 vout->mirror = mirror;
1472                 vout->control[2].value = mirror;
1473                 mutex_unlock(&vout->lock);
1474                 break;
1475         }
1476         default:
1477                 ret = -EINVAL;
1478         }
1479         return ret;
1480 }
1481
1482 static int vidioc_reqbufs(struct file *file, void *fh,
1483                         struct v4l2_requestbuffers *req)
1484 {
1485         int ret = 0;
1486         unsigned int i, num_buffers = 0;
1487         struct omap_vout_device *vout = fh;
1488         struct videobuf_queue *q = &vout->vbq;
1489
1490         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1491                 return -EINVAL;
1492         /* if memory is not mmp or userptr
1493            return error */
1494         if ((V4L2_MEMORY_MMAP != req->memory) &&
1495                         (V4L2_MEMORY_USERPTR != req->memory))
1496                 return -EINVAL;
1497
1498         mutex_lock(&vout->lock);
1499         /* Cannot be requested when streaming is on */
1500         if (vout->streaming) {
1501                 ret = -EBUSY;
1502                 goto reqbuf_err;
1503         }
1504
1505         /* If buffers are already allocated free them */
1506         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1507                 if (vout->mmap_count) {
1508                         ret = -EBUSY;
1509                         goto reqbuf_err;
1510                 }
1511                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1512                         video1_numbuffers : video2_numbuffers;
1513                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1514                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1515                                         vout->buffer_size);
1516                         vout->buf_virt_addr[i] = 0;
1517                         vout->buf_phy_addr[i] = 0;
1518                 }
1519                 vout->buffer_allocated = num_buffers;
1520                 videobuf_mmap_free(q);
1521         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1522                 if (vout->buffer_allocated) {
1523                         videobuf_mmap_free(q);
1524                         for (i = 0; i < vout->buffer_allocated; i++) {
1525                                 kfree(q->bufs[i]);
1526                                 q->bufs[i] = NULL;
1527                         }
1528                         vout->buffer_allocated = 0;
1529                 }
1530         }
1531
1532         /*store the memory type in data structure */
1533         vout->memory = req->memory;
1534
1535         INIT_LIST_HEAD(&vout->dma_queue);
1536
1537         /* call videobuf_reqbufs api */
1538         ret = videobuf_reqbufs(q, req);
1539         if (ret < 0)
1540                 goto reqbuf_err;
1541
1542         vout->buffer_allocated = req->count;
1543
1544 reqbuf_err:
1545         mutex_unlock(&vout->lock);
1546         return ret;
1547 }
1548
1549 static int vidioc_querybuf(struct file *file, void *fh,
1550                         struct v4l2_buffer *b)
1551 {
1552         struct omap_vout_device *vout = fh;
1553
1554         return videobuf_querybuf(&vout->vbq, b);
1555 }
1556
1557 static int vidioc_qbuf(struct file *file, void *fh,
1558                         struct v4l2_buffer *buffer)
1559 {
1560         struct omap_vout_device *vout = fh;
1561         struct videobuf_queue *q = &vout->vbq;
1562
1563         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1564                         (buffer->index >= vout->buffer_allocated) ||
1565                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1566                 return -EINVAL;
1567         }
1568         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1569                 if ((buffer->length < vout->pix.sizeimage) ||
1570                                 (0 == buffer->m.userptr)) {
1571                         return -EINVAL;
1572                 }
1573         }
1574
1575         if ((is_rotation_enabled(vout)) &&
1576                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1577                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1578                                 "DMA Channel not allocated for Rotation\n");
1579                 return -EINVAL;
1580         }
1581
1582         return videobuf_qbuf(q, buffer);
1583 }
1584
1585 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1586 {
1587         struct omap_vout_device *vout = fh;
1588         struct videobuf_queue *q = &vout->vbq;
1589
1590         int ret;
1591         u32 addr;
1592         unsigned long size;
1593         struct videobuf_buffer *vb;
1594
1595         vb = q->bufs[b->index];
1596
1597         if (!vout->streaming)
1598                 return -EINVAL;
1599
1600         if (file->f_flags & O_NONBLOCK)
1601                 /* Call videobuf_dqbuf for non blocking mode */
1602                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1603         else
1604                 /* Call videobuf_dqbuf for  blocking mode */
1605                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1606
1607         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1608         size = (unsigned long) vb->size;
1609         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1610                                 size, DMA_TO_DEVICE);
1611         return ret;
1612 }
1613
1614 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1615 {
1616         int ret = 0, j;
1617         u32 addr = 0, mask = 0;
1618         struct omap_vout_device *vout = fh;
1619         struct videobuf_queue *q = &vout->vbq;
1620         struct omapvideo_info *ovid = &vout->vid_info;
1621
1622         mutex_lock(&vout->lock);
1623
1624         if (vout->streaming) {
1625                 ret = -EBUSY;
1626                 goto streamon_err;
1627         }
1628
1629         ret = videobuf_streamon(q);
1630         if (ret)
1631                 goto streamon_err;
1632
1633         if (list_empty(&vout->dma_queue)) {
1634                 ret = -EIO;
1635                 goto streamon_err1;
1636         }
1637
1638         /* Get the next frame from the buffer queue */
1639         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1640                         struct videobuf_buffer, queue);
1641         /* Remove buffer from the buffer queue */
1642         list_del(&vout->cur_frm->queue);
1643         /* Mark state of the current frame to active */
1644         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1645         /* Initialize field_id and started member */
1646         vout->field_id = 0;
1647
1648         /* set flag here. Next QBUF will start DMA */
1649         vout->streaming = 1;
1650
1651         vout->first_int = 1;
1652
1653         if (omap_vout_calculate_offset(vout)) {
1654                 ret = -EINVAL;
1655                 goto streamon_err1;
1656         }
1657         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1658                 + vout->cropped_offset;
1659
1660         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1661                 | DISPC_IRQ_VSYNC2;
1662
1663         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1664
1665         /* First save the configuration in ovelray structure */
1666         ret = omapvid_init(vout, addr);
1667         if (ret)
1668                 v4l2_err(&vout->vid_dev->v4l2_dev,
1669                                 "failed to set overlay info\n");
1670         /* Enable the pipeline and set the Go bit */
1671         ret = omapvid_apply_changes(vout);
1672         if (ret)
1673                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1674
1675         for (j = 0; j < ovid->num_overlays; j++) {
1676                 struct omap_overlay *ovl = ovid->overlays[j];
1677                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1678
1679                 if (dssdev) {
1680                         ret = ovl->enable(ovl);
1681                         if (ret)
1682                                 goto streamon_err1;
1683                 }
1684         }
1685
1686         ret = 0;
1687
1688 streamon_err1:
1689         if (ret)
1690                 ret = videobuf_streamoff(q);
1691 streamon_err:
1692         mutex_unlock(&vout->lock);
1693         return ret;
1694 }
1695
1696 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1697 {
1698         u32 mask = 0;
1699         int ret = 0, j;
1700         struct omap_vout_device *vout = fh;
1701         struct omapvideo_info *ovid = &vout->vid_info;
1702
1703         if (!vout->streaming)
1704                 return -EINVAL;
1705
1706         vout->streaming = 0;
1707         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1708                 | DISPC_IRQ_VSYNC2;
1709
1710         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1711
1712         for (j = 0; j < ovid->num_overlays; j++) {
1713                 struct omap_overlay *ovl = ovid->overlays[j];
1714                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1715
1716                 if (dssdev)
1717                         ovl->disable(ovl);
1718         }
1719
1720         /* Turn of the pipeline */
1721         ret = omapvid_apply_changes(vout);
1722         if (ret)
1723                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1724                                 " streamoff\n");
1725
1726         INIT_LIST_HEAD(&vout->dma_queue);
1727         ret = videobuf_streamoff(&vout->vbq);
1728
1729         return ret;
1730 }
1731
1732 static int vidioc_s_fbuf(struct file *file, void *fh,
1733                                 const struct v4l2_framebuffer *a)
1734 {
1735         int enable = 0;
1736         struct omap_overlay *ovl;
1737         struct omapvideo_info *ovid;
1738         struct omap_vout_device *vout = fh;
1739         struct omap_overlay_manager_info info;
1740         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1741
1742         ovid = &vout->vid_info;
1743         ovl = ovid->overlays[0];
1744
1745         /* OMAP DSS doesn't support Source and Destination color
1746            key together */
1747         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1748                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1749                 return -EINVAL;
1750         /* OMAP DSS Doesn't support the Destination color key
1751            and alpha blending together */
1752         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1753                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1754                 return -EINVAL;
1755
1756         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1757                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1758                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1759         } else
1760                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1761
1762         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1763                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1764                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1765         } else
1766                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1767
1768         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1769                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1770                 enable = 1;
1771         else
1772                 enable = 0;
1773         if (ovl->manager && ovl->manager->get_manager_info &&
1774                         ovl->manager->set_manager_info) {
1775
1776                 ovl->manager->get_manager_info(ovl->manager, &info);
1777                 info.trans_enabled = enable;
1778                 info.trans_key_type = key_type;
1779                 info.trans_key = vout->win.chromakey;
1780
1781                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1782                         return -EINVAL;
1783         }
1784         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1785                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1786                 enable = 1;
1787         } else {
1788                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1789                 enable = 0;
1790         }
1791         if (ovl->manager && ovl->manager->get_manager_info &&
1792                         ovl->manager->set_manager_info) {
1793                 ovl->manager->get_manager_info(ovl->manager, &info);
1794                 /* enable this only if there is no zorder cap */
1795                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1796                         info.partial_alpha_enabled = enable;
1797                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1798                         return -EINVAL;
1799         }
1800
1801         return 0;
1802 }
1803
1804 static int vidioc_g_fbuf(struct file *file, void *fh,
1805                 struct v4l2_framebuffer *a)
1806 {
1807         struct omap_overlay *ovl;
1808         struct omapvideo_info *ovid;
1809         struct omap_vout_device *vout = fh;
1810         struct omap_overlay_manager_info info;
1811
1812         ovid = &vout->vid_info;
1813         ovl = ovid->overlays[0];
1814
1815         /* The video overlay must stay within the framebuffer and can't be
1816            positioned independently. */
1817         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1818         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1819                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1820
1821         if (ovl->manager && ovl->manager->get_manager_info) {
1822                 ovl->manager->get_manager_info(ovl->manager, &info);
1823                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1824                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1825                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1826                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1827         }
1828         if (ovl->manager && ovl->manager->get_manager_info) {
1829                 ovl->manager->get_manager_info(ovl->manager, &info);
1830                 if (info.partial_alpha_enabled)
1831                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1832         }
1833
1834         return 0;
1835 }
1836
1837 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1838         .vidioc_querycap                        = vidioc_querycap,
1839         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1840         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1841         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1842         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1843         .vidioc_queryctrl                       = vidioc_queryctrl,
1844         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1845         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1846         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1847         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1848         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1849         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1850         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1851         .vidioc_cropcap                         = vidioc_cropcap,
1852         .vidioc_g_crop                          = vidioc_g_crop,
1853         .vidioc_s_crop                          = vidioc_s_crop,
1854         .vidioc_reqbufs                         = vidioc_reqbufs,
1855         .vidioc_querybuf                        = vidioc_querybuf,
1856         .vidioc_qbuf                            = vidioc_qbuf,
1857         .vidioc_dqbuf                           = vidioc_dqbuf,
1858         .vidioc_streamon                        = vidioc_streamon,
1859         .vidioc_streamoff                       = vidioc_streamoff,
1860 };
1861
1862 static const struct v4l2_file_operations omap_vout_fops = {
1863         .owner          = THIS_MODULE,
1864         .poll           = omap_vout_poll,
1865         .unlocked_ioctl = video_ioctl2,
1866         .mmap           = omap_vout_mmap,
1867         .open           = omap_vout_open,
1868         .release        = omap_vout_release,
1869 };
1870
1871 /* Init functions used during driver initialization */
1872 /* Initial setup of video_data */
1873 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1874 {
1875         struct video_device *vfd;
1876         struct v4l2_pix_format *pix;
1877         struct v4l2_control *control;
1878         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1879         struct omap_dss_device *display = ovl->get_device(ovl);
1880
1881         /* set the default pix */
1882         pix = &vout->pix;
1883
1884         /* Set the default picture of QVGA  */
1885         pix->width = QQVGA_WIDTH;
1886         pix->height = QQVGA_HEIGHT;
1887
1888         /* Default pixel format is RGB 5-6-5 */
1889         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1890         pix->field = V4L2_FIELD_ANY;
1891         pix->bytesperline = pix->width * 2;
1892         pix->sizeimage = pix->bytesperline * pix->height;
1893         pix->priv = 0;
1894         pix->colorspace = V4L2_COLORSPACE_JPEG;
1895
1896         vout->bpp = RGB565_BPP;
1897         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1898         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1899
1900         /* Set the data structures for the overlay parameters*/
1901         vout->win.global_alpha = 255;
1902         vout->fbuf.flags = 0;
1903         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1904                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1905         vout->win.chromakey = 0;
1906
1907         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1908
1909         /*Initialize the control variables for
1910           rotation, flipping and background color. */
1911         control = vout->control;
1912         control[0].id = V4L2_CID_ROTATE;
1913         control[0].value = 0;
1914         vout->rotation = 0;
1915         vout->mirror = 0;
1916         vout->control[2].id = V4L2_CID_HFLIP;
1917         vout->control[2].value = 0;
1918         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1919                 vout->vrfb_bpp = 2;
1920
1921         control[1].id = V4L2_CID_BG_COLOR;
1922         control[1].value = 0;
1923
1924         /* initialize the video_device struct */
1925         vfd = vout->vfd = video_device_alloc();
1926
1927         if (!vfd) {
1928                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1929                                 " video device struct\n");
1930                 return -ENOMEM;
1931         }
1932         vfd->release = video_device_release;
1933         vfd->ioctl_ops = &vout_ioctl_ops;
1934
1935         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1936
1937         vfd->fops = &omap_vout_fops;
1938         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1939         vfd->vfl_dir = VFL_DIR_TX;
1940         mutex_init(&vout->lock);
1941
1942         vfd->minor = -1;
1943         return 0;
1944
1945 }
1946
1947 /* Setup video buffers */
1948 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1949                 int vid_num)
1950 {
1951         u32 numbuffers;
1952         int ret = 0, i;
1953         struct omapvideo_info *ovid;
1954         struct omap_vout_device *vout;
1955         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1956         struct omap2video_device *vid_dev =
1957                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1958
1959         vout = vid_dev->vouts[vid_num];
1960         ovid = &vout->vid_info;
1961
1962         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1963         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1964         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1965
1966         for (i = 0; i < numbuffers; i++) {
1967                 vout->buf_virt_addr[i] =
1968                         omap_vout_alloc_buffer(vout->buffer_size,
1969                                         (u32 *) &vout->buf_phy_addr[i]);
1970                 if (!vout->buf_virt_addr[i]) {
1971                         numbuffers = i;
1972                         ret = -ENOMEM;
1973                         goto free_buffers;
1974                 }
1975         }
1976
1977         vout->cropped_offset = 0;
1978
1979         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1980                 int static_vrfb_allocation = (vid_num == 0) ?
1981                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1982                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1983                                 static_vrfb_allocation);
1984         }
1985
1986         return ret;
1987
1988 free_buffers:
1989         for (i = 0; i < numbuffers; i++) {
1990                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1991                                                 vout->buffer_size);
1992                 vout->buf_virt_addr[i] = 0;
1993                 vout->buf_phy_addr[i] = 0;
1994         }
1995         return ret;
1996
1997 }
1998
1999 /* Create video out devices */
2000 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2001 {
2002         int ret = 0, k;
2003         struct omap_vout_device *vout;
2004         struct video_device *vfd = NULL;
2005         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2006         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2007                         struct omap2video_device, v4l2_dev);
2008
2009         for (k = 0; k < pdev->num_resources; k++) {
2010
2011                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2012                 if (!vout) {
2013                         dev_err(&pdev->dev, ": could not allocate memory\n");
2014                         return -ENOMEM;
2015                 }
2016
2017                 vout->vid = k;
2018                 vid_dev->vouts[k] = vout;
2019                 vout->vid_dev = vid_dev;
2020                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2021                 if (pdev->num_resources == 1)
2022                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2023                 else
2024                         /* Else select video1 and video2 one by one. */
2025                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2026                 vout->vid_info.num_overlays = 1;
2027                 vout->vid_info.id = k + 1;
2028
2029                 /* Set VRFB as rotation_type for omap2 and omap3 */
2030                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2031                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2032
2033                 /* Setup the default configuration for the video devices
2034                  */
2035                 if (omap_vout_setup_video_data(vout) != 0) {
2036                         ret = -ENOMEM;
2037                         goto error;
2038                 }
2039
2040                 /* Allocate default number of buffers for the video streaming
2041                  * and reserve the VRFB space for rotation
2042                  */
2043                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2044                         ret = -ENOMEM;
2045                         goto error1;
2046                 }
2047
2048                 /* Register the Video device with V4L2
2049                  */
2050                 vfd = vout->vfd;
2051                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2052                         dev_err(&pdev->dev, ": Could not register "
2053                                         "Video for Linux device\n");
2054                         vfd->minor = -1;
2055                         ret = -ENODEV;
2056                         goto error2;
2057                 }
2058                 video_set_drvdata(vfd, vout);
2059
2060                 dev_info(&pdev->dev, ": registered and initialized"
2061                                 " video device %d\n", vfd->minor);
2062                 if (k == (pdev->num_resources - 1))
2063                         return 0;
2064
2065                 continue;
2066 error2:
2067                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2068                         omap_vout_release_vrfb(vout);
2069                 omap_vout_free_buffers(vout);
2070 error1:
2071                 video_device_release(vfd);
2072 error:
2073                 kfree(vout);
2074                 return ret;
2075         }
2076
2077         return -ENODEV;
2078 }
2079 /* Driver functions */
2080 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2081 {
2082         struct video_device *vfd;
2083         struct omapvideo_info *ovid;
2084
2085         if (!vout)
2086                 return;
2087
2088         vfd = vout->vfd;
2089         ovid = &vout->vid_info;
2090         if (vfd) {
2091                 if (!video_is_registered(vfd)) {
2092                         /*
2093                          * The device was never registered, so release the
2094                          * video_device struct directly.
2095                          */
2096                         video_device_release(vfd);
2097                 } else {
2098                         /*
2099                          * The unregister function will release the video_device
2100                          * struct as well as unregistering it.
2101                          */
2102                         video_unregister_device(vfd);
2103                 }
2104         }
2105         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2106                 omap_vout_release_vrfb(vout);
2107                 /* Free the VRFB buffer if allocated
2108                  * init time
2109                  */
2110                 if (vout->vrfb_static_allocation)
2111                         omap_vout_free_vrfb_buffers(vout);
2112         }
2113         omap_vout_free_buffers(vout);
2114
2115         kfree(vout);
2116 }
2117
2118 static int omap_vout_remove(struct platform_device *pdev)
2119 {
2120         int k;
2121         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2122         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2123                         omap2video_device, v4l2_dev);
2124
2125         v4l2_device_unregister(v4l2_dev);
2126         for (k = 0; k < pdev->num_resources; k++)
2127                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2128
2129         for (k = 0; k < vid_dev->num_displays; k++) {
2130                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2131                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2132
2133                 omap_dss_put_device(vid_dev->displays[k]);
2134         }
2135         kfree(vid_dev);
2136         return 0;
2137 }
2138
2139 static int __init omap_vout_probe(struct platform_device *pdev)
2140 {
2141         int ret = 0, i;
2142         struct omap_overlay *ovl;
2143         struct omap_dss_device *dssdev = NULL;
2144         struct omap_dss_device *def_display;
2145         struct omap2video_device *vid_dev = NULL;
2146
2147         ret = omapdss_compat_init();
2148         if (ret) {
2149                 dev_err(&pdev->dev, "failed to init dss\n");
2150                 return ret;
2151         }
2152
2153         if (pdev->num_resources == 0) {
2154                 dev_err(&pdev->dev, "probed for an unknown device\n");
2155                 ret = -ENODEV;
2156                 goto err_dss_init;
2157         }
2158
2159         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2160         if (vid_dev == NULL) {
2161                 ret = -ENOMEM;
2162                 goto err_dss_init;
2163         }
2164
2165         vid_dev->num_displays = 0;
2166         for_each_dss_dev(dssdev) {
2167                 omap_dss_get_device(dssdev);
2168
2169                 if (!dssdev->driver) {
2170                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2171                                         dssdev->name);
2172                         omap_dss_put_device(dssdev);
2173                         continue;
2174                 }
2175
2176                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2177         }
2178
2179         if (vid_dev->num_displays == 0) {
2180                 dev_err(&pdev->dev, "no displays\n");
2181                 ret = -EINVAL;
2182                 goto probe_err0;
2183         }
2184
2185         vid_dev->num_overlays = omap_dss_get_num_overlays();
2186         for (i = 0; i < vid_dev->num_overlays; i++)
2187                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2188
2189         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2190         for (i = 0; i < vid_dev->num_managers; i++)
2191                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2192
2193         /* Get the Video1 overlay and video2 overlay.
2194          * Setup the Display attached to that overlays
2195          */
2196         for (i = 1; i < vid_dev->num_overlays; i++) {
2197                 ovl = omap_dss_get_overlay(i);
2198                 dssdev = ovl->get_device(ovl);
2199
2200                 if (dssdev) {
2201                         def_display = dssdev;
2202                 } else {
2203                         dev_warn(&pdev->dev, "cannot find display\n");
2204                         def_display = NULL;
2205                 }
2206                 if (def_display) {
2207                         struct omap_dss_driver *dssdrv = def_display->driver;
2208
2209                         ret = dssdrv->enable(def_display);
2210                         if (ret) {
2211                                 /* Here we are not considering a error
2212                                  *  as display may be enabled by frame
2213                                  *  buffer driver
2214                                  */
2215                                 dev_warn(&pdev->dev,
2216                                         "'%s' Display already enabled\n",
2217                                         def_display->name);
2218                         }
2219                 }
2220         }
2221
2222         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2223                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2224                 ret = -ENODEV;
2225                 goto probe_err1;
2226         }
2227
2228         ret = omap_vout_create_video_devices(pdev);
2229         if (ret)
2230                 goto probe_err2;
2231
2232         for (i = 0; i < vid_dev->num_displays; i++) {
2233                 struct omap_dss_device *display = vid_dev->displays[i];
2234
2235                 if (display->driver->update)
2236                         display->driver->update(display, 0, 0,
2237                                         display->panel.timings.x_res,
2238                                         display->panel.timings.y_res);
2239         }
2240         return 0;
2241
2242 probe_err2:
2243         v4l2_device_unregister(&vid_dev->v4l2_dev);
2244 probe_err1:
2245         for (i = 1; i < vid_dev->num_overlays; i++) {
2246                 def_display = NULL;
2247                 ovl = omap_dss_get_overlay(i);
2248                 dssdev = ovl->get_device(ovl);
2249
2250                 if (dssdev)
2251                         def_display = dssdev;
2252
2253                 if (def_display && def_display->driver)
2254                         def_display->driver->disable(def_display);
2255         }
2256 probe_err0:
2257         kfree(vid_dev);
2258 err_dss_init:
2259         omapdss_compat_uninit();
2260         return ret;
2261 }
2262
2263 static struct platform_driver omap_vout_driver = {
2264         .driver = {
2265                 .name = VOUT_NAME,
2266         },
2267         .remove = omap_vout_remove,
2268 };
2269
2270 static int __init omap_vout_init(void)
2271 {
2272         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2273                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2274                 return -EINVAL;
2275         }
2276         return 0;
2277 }
2278
2279 static void omap_vout_cleanup(void)
2280 {
2281         platform_driver_unregister(&omap_vout_driver);
2282 }
2283
2284 late_initcall(omap_vout_init);
2285 module_exit(omap_vout_cleanup);