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                 .description = "RGB565, le",
 118                 .pixelformat = V4L2_PIX_FMT_RGB565,
 119         },
 120         {
 121                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
 122                  *  this for RGB24 unpack mode, the last 8 bits are ignored
 123                  * */
 124                 .description = "RGB32, le",
 125                 .pixelformat = V4L2_PIX_FMT_RGB32,
 126         },
 127         {
 128                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
 129                  *        this for RGB24 packed mode
 130                  *
 131                  */
 132                 .description = "RGB24, le",
 133                 .pixelformat = V4L2_PIX_FMT_RGB24,
 134         },
 135         {
 136                 .description = "YUYV (YUV 4:2:2), packed",
 137                 .pixelformat = V4L2_PIX_FMT_YUYV,
 138         },
 139         {
 140                 .description = "UYVY, packed",
 141                 .pixelformat = V4L2_PIX_FMT_UYVY,
 142         },
 143 };
 144
 145 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
 146
 147 /*
 148  * Try format
 149  */
 150 static int omap_vout_try_format(struct v4l2_pix_format *pix)
 151 {
 152         int ifmt, bpp = 0;
 153
 154         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
 155                                                 (u32)VID_MAX_HEIGHT);
 156         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
 157
 158         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
 159                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
 160                         break;
 161         }
 162
 163         if (ifmt == NUM_OUTPUT_FORMATS)
 164                 ifmt = 0;
 165
 166         pix->pixelformat = omap_formats[ifmt].pixelformat;
 167         pix->field = V4L2_FIELD_ANY;
 168
 169         switch (pix->pixelformat) {
 170         case V4L2_PIX_FMT_YUYV:
 171         case V4L2_PIX_FMT_UYVY:
 172         default:
 173                 pix->colorspace = V4L2_COLORSPACE_JPEG;
 174                 bpp = YUYV_BPP;
 175                 break;
 176         case V4L2_PIX_FMT_RGB565:
 177         case V4L2_PIX_FMT_RGB565X:
 178                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 179                 bpp = RGB565_BPP;
 180                 break;
 181         case V4L2_PIX_FMT_RGB24:
 182                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 183                 bpp = RGB24_BPP;
 184                 break;
 185         case V4L2_PIX_FMT_RGB32:
 186         case V4L2_PIX_FMT_BGR32:
 187                 pix->colorspace = V4L2_COLORSPACE_SRGB;
 188                 bpp = RGB32_BPP;
 189                 break;
 190         }
 191         pix->bytesperline = pix->width * bpp;
 192         pix->sizeimage = pix->bytesperline * pix->height;
 193
 194         return bpp;
 195 }
 196
 197 /*
 198  * omap_vout_get_userptr: Convert user space virtual address to physical
 199  * address.
 200  */
 201 static int omap_vout_get_userptr(struct videobuf_buffer *vb, long virtp,
 202                                  u32 *physp)
 203 {
 204         struct frame_vector *vec;
 205         int ret;
 206
 207         /* For kernel direct-mapped memory, take the easy way */
 208         if (virtp >= PAGE_OFFSET) {
 209                 *physp = virt_to_phys((void *)virtp);
 210                 return 0;
 211         }
 212
 213         vec = frame_vector_create(1);
 214         if (!vec)
 215                 return -ENOMEM;
 216
 217         ret = get_vaddr_frames(virtp, 1, FOLL_WRITE, vec);
 218         if (ret != 1) {
 219                 frame_vector_destroy(vec);
 220                 return -EINVAL;
 221         }
 222         *physp = __pfn_to_phys(frame_vector_pfns(vec)[0]);
 223         vb->priv = vec;
 224
 225         return 0;
 226 }
 227
 228 /*
 229  * Free the V4L2 buffers
 230  */
 231 void omap_vout_free_buffers(struct omap_vout_device *vout)
 232 {
 233         int i, numbuffers;
 234
 235         /* Allocate memory for the buffers */
 236         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
 237         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
 238
 239         for (i = 0; i < numbuffers; i++) {
 240                 omap_vout_free_buffer(vout->buf_virt_addr[i],
 241                                 vout->buffer_size);
 242                 vout->buf_phy_addr[i] = 0;
 243                 vout->buf_virt_addr[i] = 0;
 244         }
 245 }
 246
 247 /*
 248  * Convert V4L2 rotation to DSS rotation
 249  *      V4L2 understand 0, 90, 180, 270.
 250  *      Convert to 0, 1, 2 and 3 respectively for DSS
 251  */
 252 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
 253                         enum dss_rotation *rotation, bool mirror)
 254 {
 255         int ret = 0;
 256
 257         switch (v4l2_rotation) {
 258         case 90:
 259                 *rotation = dss_rotation_90_degree;
 260                 break;
 261         case 180:
 262                 *rotation = dss_rotation_180_degree;
 263                 break;
 264         case 270:
 265                 *rotation = dss_rotation_270_degree;
 266                 break;
 267         case 0:
 268                 *rotation = dss_rotation_0_degree;
 269                 break;
 270         default:
 271                 ret = -EINVAL;
 272         }
 273         return ret;
 274 }
 275
 276 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
 277 {
 278         struct omapvideo_info *ovid;
 279         struct v4l2_rect *crop = &vout->crop;
 280         struct v4l2_pix_format *pix = &vout->pix;
 281         int *cropped_offset = &vout->cropped_offset;
 282         int ps = 2, line_length = 0;
 283
 284         ovid = &vout->vid_info;
 285
 286         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 287                 omap_vout_calculate_vrfb_offset(vout);
 288         } else {
 289                 vout->line_length = line_length = pix->width;
 290
 291                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
 292                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
 293                         ps = 2;
 294                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
 295                         ps = 4;
 296                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
 297                         ps = 3;
 298
 299                 vout->ps = ps;
 300
 301                 *cropped_offset = (line_length * ps) *
 302                         crop->top + crop->left * ps;
 303         }
 304
 305         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
 306                         __func__, vout->cropped_offset);
 307
 308         return 0;
 309 }
 310
 311 /*
 312  * Convert V4L2 pixel format to DSS pixel format
 313  */
 314 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
 315 {
 316         struct omap_overlay *ovl;
 317         struct omapvideo_info *ovid;
 318         struct v4l2_pix_format *pix = &vout->pix;
 319         enum omap_color_mode mode;
 320
 321         ovid = &vout->vid_info;
 322         ovl = ovid->overlays[0];
 323
 324         switch (pix->pixelformat) {
 325         case V4L2_PIX_FMT_YUYV:
 326                 mode = OMAP_DSS_COLOR_YUV2;
 327                 break;
 328         case V4L2_PIX_FMT_UYVY:
 329                 mode = OMAP_DSS_COLOR_UYVY;
 330                 break;
 331         case V4L2_PIX_FMT_RGB565:
 332                 mode = OMAP_DSS_COLOR_RGB16;
 333                 break;
 334         case V4L2_PIX_FMT_RGB24:
 335                 mode = OMAP_DSS_COLOR_RGB24P;
 336                 break;
 337         case V4L2_PIX_FMT_RGB32:
 338                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
 339                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
 340                 break;
 341         case V4L2_PIX_FMT_BGR32:
 342                 mode = OMAP_DSS_COLOR_RGBX32;
 343                 break;
 344         default:
 345                 mode = -EINVAL;
 346                 break;
 347         }
 348         return mode;
 349 }
 350
 351 /*
 352  * Setup the overlay
 353  */
 354 static int omapvid_setup_overlay(struct omap_vout_device *vout,
 355                 struct omap_overlay *ovl, int posx, int posy, int outw,
 356                 int outh, u32 addr)
 357 {
 358         int ret = 0;
 359         struct omap_overlay_info info;
 360         int cropheight, cropwidth, pixwidth;
 361
 362         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
 363                         (outw != vout->pix.width || outh != vout->pix.height)) {
 364                 ret = -EINVAL;
 365                 goto setup_ovl_err;
 366         }
 367
 368         vout->dss_mode = video_mode_to_dss_mode(vout);
 369         if (vout->dss_mode == -EINVAL) {
 370                 ret = -EINVAL;
 371                 goto setup_ovl_err;
 372         }
 373
 374         /* Setup the input plane parameters according to
 375          * rotation value selected.
 376          */
 377         if (is_rotation_90_or_270(vout)) {
 378                 cropheight = vout->crop.width;
 379                 cropwidth = vout->crop.height;
 380                 pixwidth = vout->pix.height;
 381         } else {
 382                 cropheight = vout->crop.height;
 383                 cropwidth = vout->crop.width;
 384                 pixwidth = vout->pix.width;
 385         }
 386
 387         ovl->get_overlay_info(ovl, &info);
 388         info.paddr = addr;
 389         info.width = cropwidth;
 390         info.height = cropheight;
 391         info.color_mode = vout->dss_mode;
 392         info.mirror = vout->mirror;
 393         info.pos_x = posx;
 394         info.pos_y = posy;
 395         info.out_width = outw;
 396         info.out_height = outh;
 397         info.global_alpha = vout->win.global_alpha;
 398         if (!is_rotation_enabled(vout)) {
 399                 info.rotation = 0;
 400                 info.rotation_type = OMAP_DSS_ROT_DMA;
 401                 info.screen_width = pixwidth;
 402         } else {
 403                 info.rotation = vout->rotation;
 404                 info.rotation_type = OMAP_DSS_ROT_VRFB;
 405                 info.screen_width = 2048;
 406         }
 407
 408         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 409                 "%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
 410                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
 411                 "out_height=%d rotation_type=%d screen_width=%d\n", __func__,
 412                 ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
 413                 info.color_mode, info.rotation, info.mirror, info.pos_x,
 414                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
 415                 info.screen_width);
 416
 417         ret = ovl->set_overlay_info(ovl, &info);
 418         if (ret)
 419                 goto setup_ovl_err;
 420
 421         return 0;
 422
 423 setup_ovl_err:
 424         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
 425         return ret;
 426 }
 427
 428 /*
 429  * Initialize the overlay structure
 430  */
 431 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
 432 {
 433         int ret = 0, i;
 434         struct v4l2_window *win;
 435         struct omap_overlay *ovl;
 436         int posx, posy, outw, outh;
 437         struct omap_video_timings *timing;
 438         struct omapvideo_info *ovid = &vout->vid_info;
 439
 440         win = &vout->win;
 441         for (i = 0; i < ovid->num_overlays; i++) {
 442                 struct omap_dss_device *dssdev;
 443
 444                 ovl = ovid->overlays[i];
 445                 dssdev = ovl->get_device(ovl);
 446
 447                 if (!dssdev)
 448                         return -EINVAL;
 449
 450                 timing = &dssdev->panel.timings;
 451
 452                 outw = win->w.width;
 453                 outh = win->w.height;
 454                 switch (vout->rotation) {
 455                 case dss_rotation_90_degree:
 456                         /* Invert the height and width for 90
 457                          * and 270 degree rotation
 458                          */
 459                         swap(outw, outh);
 460                         posy = (timing->y_res - win->w.width) - win->w.left;
 461                         posx = win->w.top;
 462                         break;
 463
 464                 case dss_rotation_180_degree:
 465                         posx = (timing->x_res - win->w.width) - win->w.left;
 466                         posy = (timing->y_res - win->w.height) - win->w.top;
 467                         break;
 468
 469                 case dss_rotation_270_degree:
 470                         swap(outw, outh);
 471                         posy = win->w.left;
 472                         posx = (timing->x_res - win->w.height) - win->w.top;
 473                         break;
 474
 475                 default:
 476                         posx = win->w.left;
 477                         posy = win->w.top;
 478                         break;
 479                 }
 480
 481                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
 482                                 outw, outh, addr);
 483                 if (ret)
 484                         goto omapvid_init_err;
 485         }
 486         return 0;
 487
 488 omapvid_init_err:
 489         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
 490         return ret;
 491 }
 492
 493 /*
 494  * Apply the changes set the go bit of DSS
 495  */
 496 static int omapvid_apply_changes(struct omap_vout_device *vout)
 497 {
 498         int i;
 499         struct omap_overlay *ovl;
 500         struct omapvideo_info *ovid = &vout->vid_info;
 501
 502         for (i = 0; i < ovid->num_overlays; i++) {
 503                 struct omap_dss_device *dssdev;
 504
 505                 ovl = ovid->overlays[i];
 506                 dssdev = ovl->get_device(ovl);
 507                 if (!dssdev)
 508                         return -EINVAL;
 509                 ovl->manager->apply(ovl->manager);
 510         }
 511
 512         return 0;
 513 }
 514
 515 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
 516                 unsigned int irqstatus, struct timeval timevalue)
 517 {
 518         u32 fid;
 519
 520         if (vout->first_int) {
 521                 vout->first_int = 0;
 522                 goto err;
 523         }
 524
 525         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
 526                 fid = 1;
 527         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
 528                 fid = 0;
 529         else
 530                 goto err;
 531
 532         vout->field_id ^= 1;
 533         if (fid != vout->field_id) {
 534                 if (fid == 0)
 535                         vout->field_id = fid;
 536         } else if (0 == fid) {
 537                 if (vout->cur_frm == vout->next_frm)
 538                         goto err;
 539
 540                 vout->cur_frm->ts = timevalue;
 541                 vout->cur_frm->state = VIDEOBUF_DONE;
 542                 wake_up_interruptible(&vout->cur_frm->done);
 543                 vout->cur_frm = vout->next_frm;
 544         } else {
 545                 if (list_empty(&vout->dma_queue) ||
 546                                 (vout->cur_frm != vout->next_frm))
 547                         goto err;
 548         }
 549
 550         return vout->field_id;
 551 err:
 552         return 0;
 553 }
 554
 555 static void omap_vout_isr(void *arg, unsigned int irqstatus)
 556 {
 557         int ret, fid, mgr_id;
 558         u32 addr, irq;
 559         struct omap_overlay *ovl;
 560         struct timeval timevalue;
 561         struct omapvideo_info *ovid;
 562         struct omap_dss_device *cur_display;
 563         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
 564
 565         if (!vout->streaming)
 566                 return;
 567
 568         ovid = &vout->vid_info;
 569         ovl = ovid->overlays[0];
 570
 571         mgr_id = ovl->manager->id;
 572
 573         /* get the display device attached to the overlay */
 574         cur_display = ovl->get_device(ovl);
 575
 576         if (!cur_display)
 577                 return;
 578
 579         spin_lock(&vout->vbq_lock);
 580         v4l2_get_timestamp(&timevalue);
 581
 582         switch (cur_display->type) {
 583         case OMAP_DISPLAY_TYPE_DSI:
 584         case OMAP_DISPLAY_TYPE_DPI:
 585         case OMAP_DISPLAY_TYPE_DVI:
 586                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
 587                         irq = DISPC_IRQ_VSYNC;
 588                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
 589                         irq = DISPC_IRQ_VSYNC2;
 590                 else
 591                         goto vout_isr_err;
 592
 593                 if (!(irqstatus & irq))
 594                         goto vout_isr_err;
 595                 break;
 596         case OMAP_DISPLAY_TYPE_VENC:
 597                 fid = omapvid_handle_interlace_display(vout, irqstatus,
 598                                 timevalue);
 599                 if (!fid)
 600                         goto vout_isr_err;
 601                 break;
 602         case OMAP_DISPLAY_TYPE_HDMI:
 603                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
 604                         goto vout_isr_err;
 605                 break;
 606         default:
 607                 goto vout_isr_err;
 608         }
 609
 610         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
 611                 vout->cur_frm->ts = timevalue;
 612                 vout->cur_frm->state = VIDEOBUF_DONE;
 613                 wake_up_interruptible(&vout->cur_frm->done);
 614                 vout->cur_frm = vout->next_frm;
 615         }
 616
 617         vout->first_int = 0;
 618         if (list_empty(&vout->dma_queue))
 619                 goto vout_isr_err;
 620
 621         vout->next_frm = list_entry(vout->dma_queue.next,
 622                         struct videobuf_buffer, queue);
 623         list_del(&vout->next_frm->queue);
 624
 625         vout->next_frm->state = VIDEOBUF_ACTIVE;
 626
 627         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
 628                 + vout->cropped_offset;
 629
 630         /* First save the configuration in ovelray structure */
 631         ret = omapvid_init(vout, addr);
 632         if (ret) {
 633                 printk(KERN_ERR VOUT_NAME
 634                         "failed to set overlay info\n");
 635                 goto vout_isr_err;
 636         }
 637
 638         /* Enable the pipeline and set the Go bit */
 639         ret = omapvid_apply_changes(vout);
 640         if (ret)
 641                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
 642
 643 vout_isr_err:
 644         spin_unlock(&vout->vbq_lock);
 645 }
 646
 647 /* Video buffer call backs */
 648
 649 /*
 650  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
 651  * called. This is used to setup buffers and return size and count of
 652  * buffers allocated. After the call to this buffer, videobuf layer will
 653  * setup buffer queue depending on the size and count of buffers
 654  */
 655 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
 656                           unsigned int *size)
 657 {
 658         int startindex = 0, i, j;
 659         u32 phy_addr = 0, virt_addr = 0;
 660         struct omap_vout_device *vout = q->priv_data;
 661         struct omapvideo_info *ovid = &vout->vid_info;
 662         int vid_max_buf_size;
 663
 664         if (!vout)
 665                 return -EINVAL;
 666
 667         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
 668                 video2_bufsize;
 669
 670         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
 671                 return -EINVAL;
 672
 673         startindex = (vout->vid == OMAP_VIDEO1) ?
 674                 video1_numbuffers : video2_numbuffers;
 675         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
 676                 *count = startindex;
 677
 678         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 679                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
 680                         return -ENOMEM;
 681         }
 682
 683         if (V4L2_MEMORY_MMAP != vout->memory)
 684                 return 0;
 685
 686         /* Now allocated the V4L2 buffers */
 687         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
 688         startindex = (vout->vid == OMAP_VIDEO1) ?
 689                 video1_numbuffers : video2_numbuffers;
 690
 691         /* Check the size of the buffer */
 692         if (*size > vid_max_buf_size) {
 693                 v4l2_err(&vout->vid_dev->v4l2_dev,
 694                                 "buffer allocation mismatch [%u] [%u]\n",
 695                                 *size, vout->buffer_size);
 696                 return -ENOMEM;
 697         }
 698
 699         for (i = startindex; i < *count; i++) {
 700                 vout->buffer_size = *size;
 701
 702                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
 703                                 &phy_addr);
 704                 if (!virt_addr) {
 705                         if (ovid->rotation_type == VOUT_ROT_NONE)
 706                                 break;
 707
 708                         if (!is_rotation_enabled(vout))
 709                                 break;
 710
 711                         /* Free the VRFB buffers if no space for V4L2 buffers */
 712                         for (j = i; j < *count; j++) {
 713                                 omap_vout_free_buffer(vout->smsshado_virt_addr[j],
 714                                                       vout->smsshado_size);
 715                                 vout->smsshado_virt_addr[j] = 0;
 716                                 vout->smsshado_phy_addr[j] = 0;
 717                         }
 718                 }
 719                 vout->buf_virt_addr[i] = virt_addr;
 720                 vout->buf_phy_addr[i] = phy_addr;
 721         }
 722         *count = vout->buffer_allocated = i;
 723
 724         return 0;
 725 }
 726
 727 /*
 728  * Free the V4L2 buffers additionally allocated than default
 729  * number of buffers
 730  */
 731 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
 732 {
 733         int num_buffers = 0, i;
 734
 735         num_buffers = (vout->vid == OMAP_VIDEO1) ?
 736                 video1_numbuffers : video2_numbuffers;
 737
 738         for (i = num_buffers; i < vout->buffer_allocated; i++) {
 739                 if (vout->buf_virt_addr[i])
 740                         omap_vout_free_buffer(vout->buf_virt_addr[i],
 741                                         vout->buffer_size);
 742
 743                 vout->buf_virt_addr[i] = 0;
 744                 vout->buf_phy_addr[i] = 0;
 745         }
 746         vout->buffer_allocated = num_buffers;
 747 }
 748
 749 /*
 750  * This function will be called when VIDIOC_QBUF ioctl is called.
 751  * It prepare buffers before give out for the display. This function
 752  * converts user space virtual address into physical address if userptr memory
 753  * exchange mechanism is used. If rotation is enabled, it copies entire
 754  * buffer into VRFB memory space before giving it to the DSS.
 755  */
 756 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
 757                         struct videobuf_buffer *vb,
 758                         enum v4l2_field field)
 759 {
 760         struct omap_vout_device *vout = q->priv_data;
 761         struct omapvideo_info *ovid = &vout->vid_info;
 762
 763         if (VIDEOBUF_NEEDS_INIT == vb->state) {
 764                 vb->width = vout->pix.width;
 765                 vb->height = vout->pix.height;
 766                 vb->size = vb->width * vb->height * vout->bpp;
 767                 vb->field = field;
 768         }
 769         vb->state = VIDEOBUF_PREPARED;
 770         /* if user pointer memory mechanism is used, get the physical
 771          * address of the buffer
 772          */
 773         if (V4L2_MEMORY_USERPTR == vb->memory) {
 774                 int ret;
 775
 776                 if (0 == vb->baddr)
 777                         return -EINVAL;
 778                 /* Physical address */
 779                 ret = omap_vout_get_userptr(vb, vb->baddr,
 780                                 (u32 *)&vout->queued_buf_addr[vb->i]);
 781                 if (ret < 0)
 782                         return ret;
 783         } else {
 784                 unsigned long addr, dma_addr;
 785                 unsigned long size;
 786
 787                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
 788                 size = (unsigned long) vb->size;
 789
 790                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
 791                                 size, DMA_TO_DEVICE);
 792                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
 793                         v4l2_err(&vout->vid_dev->v4l2_dev,
 794                                  "dma_map_single failed\n");
 795
 796                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
 797         }
 798
 799         if (ovid->rotation_type == VOUT_ROT_VRFB)
 800                 return omap_vout_prepare_vrfb(vout, vb);
 801         else
 802                 return 0;
 803 }
 804
 805 /*
 806  * Buffer queue function will be called from the videobuf layer when _QBUF
 807  * ioctl is called. It is used to enqueue buffer, which is ready to be
 808  * displayed.
 809  */
 810 static void omap_vout_buffer_queue(struct videobuf_queue *q,
 811                           struct videobuf_buffer *vb)
 812 {
 813         struct omap_vout_device *vout = q->priv_data;
 814
 815         /* Driver is also maintainig a queue. So enqueue buffer in the driver
 816          * queue */
 817         list_add_tail(&vb->queue, &vout->dma_queue);
 818
 819         vb->state = VIDEOBUF_QUEUED;
 820 }
 821
 822 /*
 823  * Buffer release function is called from videobuf layer to release buffer
 824  * which are already allocated
 825  */
 826 static void omap_vout_buffer_release(struct videobuf_queue *q,
 827                             struct videobuf_buffer *vb)
 828 {
 829         vb->state = VIDEOBUF_NEEDS_INIT;
 830         if (vb->memory == V4L2_MEMORY_USERPTR && vb->priv) {
 831                 struct frame_vector *vec = vb->priv;
 832
 833                 put_vaddr_frames(vec);
 834                 frame_vector_destroy(vec);
 835         }
 836 }
 837
 838 /*
 839  *  File operations
 840  */
 841 static __poll_t omap_vout_poll(struct file *file,
 842                                    struct poll_table_struct *wait)
 843 {
 844         struct omap_vout_device *vout = file->private_data;
 845         struct videobuf_queue *q = &vout->vbq;
 846
 847         return videobuf_poll_stream(file, q, wait);
 848 }
 849
 850 static void omap_vout_vm_open(struct vm_area_struct *vma)
 851 {
 852         struct omap_vout_device *vout = vma->vm_private_data;
 853
 854         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 855                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 856         vout->mmap_count++;
 857 }
 858
 859 static void omap_vout_vm_close(struct vm_area_struct *vma)
 860 {
 861         struct omap_vout_device *vout = vma->vm_private_data;
 862
 863         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 864                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 865         vout->mmap_count--;
 866 }
 867
 868 static const struct vm_operations_struct omap_vout_vm_ops = {
 869         .open   = omap_vout_vm_open,
 870         .close  = omap_vout_vm_close,
 871 };
 872
 873 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
 874 {
 875         int i;
 876         void *pos;
 877         unsigned long start = vma->vm_start;
 878         unsigned long size = (vma->vm_end - vma->vm_start);
 879         struct omap_vout_device *vout = file->private_data;
 880         struct videobuf_queue *q = &vout->vbq;
 881
 882         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 883                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
 884                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
 885
 886         /* look for the buffer to map */
 887         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
 888                 if (NULL == q->bufs[i])
 889                         continue;
 890                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
 891                         continue;
 892                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
 893                         break;
 894         }
 895
 896         if (VIDEO_MAX_FRAME == i) {
 897                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 898                                 "offset invalid [offset=0x%lx]\n",
 899                                 (vma->vm_pgoff << PAGE_SHIFT));
 900                 return -EINVAL;
 901         }
 902         /* Check the size of the buffer */
 903         if (size > vout->buffer_size) {
 904                 v4l2_err(&vout->vid_dev->v4l2_dev,
 905                                 "insufficient memory [%lu] [%u]\n",
 906                                 size, vout->buffer_size);
 907                 return -ENOMEM;
 908         }
 909
 910         q->bufs[i]->baddr = vma->vm_start;
 911
 912         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 913         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 914         vma->vm_ops = &omap_vout_vm_ops;
 915         vma->vm_private_data = (void *) vout;
 916         pos = (void *)vout->buf_virt_addr[i];
 917         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
 918         while (size > 0) {
 919                 unsigned long pfn;
 920                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
 921                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
 922                         return -EAGAIN;
 923                 start += PAGE_SIZE;
 924                 pos += PAGE_SIZE;
 925                 size -= PAGE_SIZE;
 926         }
 927         vout->mmap_count++;
 928         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 929
 930         return 0;
 931 }
 932
 933 static int omap_vout_release(struct file *file)
 934 {
 935         unsigned int ret, i;
 936         struct videobuf_queue *q;
 937         struct omapvideo_info *ovid;
 938         struct omap_vout_device *vout = file->private_data;
 939
 940         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
 941         ovid = &vout->vid_info;
 942
 943         if (!vout)
 944                 return 0;
 945
 946         q = &vout->vbq;
 947         /* Disable all the overlay managers connected with this interface */
 948         for (i = 0; i < ovid->num_overlays; i++) {
 949                 struct omap_overlay *ovl = ovid->overlays[i];
 950                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
 951
 952                 if (dssdev)
 953                         ovl->disable(ovl);
 954         }
 955         /* Turn off the pipeline */
 956         ret = omapvid_apply_changes(vout);
 957         if (ret)
 958                 v4l2_warn(&vout->vid_dev->v4l2_dev,
 959                                 "Unable to apply changes\n");
 960
 961         /* Free all buffers */
 962         omap_vout_free_extra_buffers(vout);
 963
 964         /* Free the VRFB buffers only if they are allocated
 965          * during reqbufs.  Don't free if init time allocated
 966          */
 967         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 968                 if (!vout->vrfb_static_allocation)
 969                         omap_vout_free_vrfb_buffers(vout);
 970         }
 971         videobuf_mmap_free(q);
 972
 973         /* Even if apply changes fails we should continue
 974            freeing allocated memory */
 975         if (vout->streaming) {
 976                 u32 mask = 0;
 977
 978                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
 979                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
 980                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
 981                 vout->streaming = false;
 982
 983                 videobuf_streamoff(q);
 984                 videobuf_queue_cancel(q);
 985         }
 986
 987         if (vout->mmap_count != 0)
 988                 vout->mmap_count = 0;
 989
 990         vout->opened -= 1;
 991         file->private_data = NULL;
 992
 993         if (vout->buffer_allocated)
 994                 videobuf_mmap_free(q);
 995
 996         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 997         return ret;
 998 }
 999
1000 static int omap_vout_open(struct file *file)
1001 {
1002         struct videobuf_queue *q;
1003         struct omap_vout_device *vout = NULL;
1004
1005         vout = video_drvdata(file);
1006
1007         if (vout == NULL)
1008                 return -ENODEV;
1009
1010         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1011
1012         /* for now, we only support single open */
1013         if (vout->opened)
1014                 return -EBUSY;
1015
1016         vout->opened += 1;
1017
1018         file->private_data = vout;
1019         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1020
1021         q = &vout->vbq;
1022         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1023         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1024         video_vbq_ops.buf_release = omap_vout_buffer_release;
1025         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1026         spin_lock_init(&vout->vbq_lock);
1027
1028         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1029                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1030                         sizeof(struct videobuf_buffer), vout, NULL);
1031
1032         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1033         return 0;
1034 }
1035
1036 /*
1037  * V4L2 ioctls
1038  */
1039 static int vidioc_querycap(struct file *file, void *fh,
1040                 struct v4l2_capability *cap)
1041 {
1042         struct omap_vout_device *vout = fh;
1043
1044         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1045         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1046         cap->bus_info[0] = '\0';
1047         cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1048                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1049         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1050
1051         return 0;
1052 }
1053
1054 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1055                         struct v4l2_fmtdesc *fmt)
1056 {
1057         int index = fmt->index;
1058
1059         if (index >= NUM_OUTPUT_FORMATS)
1060                 return -EINVAL;
1061
1062         fmt->flags = omap_formats[index].flags;
1063         strlcpy(fmt->description, omap_formats[index].description,
1064                         sizeof(fmt->description));
1065         fmt->pixelformat = omap_formats[index].pixelformat;
1066
1067         return 0;
1068 }
1069
1070 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1071                         struct v4l2_format *f)
1072 {
1073         struct omap_vout_device *vout = fh;
1074
1075         f->fmt.pix = vout->pix;
1076         return 0;
1077
1078 }
1079
1080 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1081                         struct v4l2_format *f)
1082 {
1083         struct omap_overlay *ovl;
1084         struct omapvideo_info *ovid;
1085         struct omap_video_timings *timing;
1086         struct omap_vout_device *vout = fh;
1087         struct omap_dss_device *dssdev;
1088
1089         ovid = &vout->vid_info;
1090         ovl = ovid->overlays[0];
1091         /* get the display device attached to the overlay */
1092         dssdev = ovl->get_device(ovl);
1093
1094         if (!dssdev)
1095                 return -EINVAL;
1096
1097         timing = &dssdev->panel.timings;
1098
1099         vout->fbuf.fmt.height = timing->y_res;
1100         vout->fbuf.fmt.width = timing->x_res;
1101
1102         omap_vout_try_format(&f->fmt.pix);
1103         return 0;
1104 }
1105
1106 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1107                         struct v4l2_format *f)
1108 {
1109         int ret, bpp;
1110         struct omap_overlay *ovl;
1111         struct omapvideo_info *ovid;
1112         struct omap_video_timings *timing;
1113         struct omap_vout_device *vout = fh;
1114         struct omap_dss_device *dssdev;
1115
1116         if (vout->streaming)
1117                 return -EBUSY;
1118
1119         mutex_lock(&vout->lock);
1120
1121         ovid = &vout->vid_info;
1122         ovl = ovid->overlays[0];
1123         dssdev = ovl->get_device(ovl);
1124
1125         /* get the display device attached to the overlay */
1126         if (!dssdev) {
1127                 ret = -EINVAL;
1128                 goto s_fmt_vid_out_exit;
1129         }
1130         timing = &dssdev->panel.timings;
1131
1132         /* We dont support RGB24-packed mode if vrfb rotation
1133          * is enabled*/
1134         if ((is_rotation_enabled(vout)) &&
1135                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1136                 ret = -EINVAL;
1137                 goto s_fmt_vid_out_exit;
1138         }
1139
1140         /* get the framebuffer parameters */
1141
1142         if (is_rotation_90_or_270(vout)) {
1143                 vout->fbuf.fmt.height = timing->x_res;
1144                 vout->fbuf.fmt.width = timing->y_res;
1145         } else {
1146                 vout->fbuf.fmt.height = timing->y_res;
1147                 vout->fbuf.fmt.width = timing->x_res;
1148         }
1149
1150         /* change to samller size is OK */
1151
1152         bpp = omap_vout_try_format(&f->fmt.pix);
1153         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1154
1155         /* try & set the new output format */
1156         vout->bpp = bpp;
1157         vout->pix = f->fmt.pix;
1158         vout->vrfb_bpp = 1;
1159
1160         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1161         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1162                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1163                 vout->vrfb_bpp = 2;
1164
1165         /* set default crop and win */
1166         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1167
1168         ret = 0;
1169
1170 s_fmt_vid_out_exit:
1171         mutex_unlock(&vout->lock);
1172         return ret;
1173 }
1174
1175 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1176                         struct v4l2_format *f)
1177 {
1178         int ret = 0;
1179         struct omap_vout_device *vout = fh;
1180         struct omap_overlay *ovl;
1181         struct omapvideo_info *ovid;
1182         struct v4l2_window *win = &f->fmt.win;
1183
1184         ovid = &vout->vid_info;
1185         ovl = ovid->overlays[0];
1186
1187         ret = omap_vout_try_window(&vout->fbuf, win);
1188
1189         if (!ret) {
1190                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1191                         win->global_alpha = 255;
1192                 else
1193                         win->global_alpha = f->fmt.win.global_alpha;
1194         }
1195
1196         return ret;
1197 }
1198
1199 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1200                         struct v4l2_format *f)
1201 {
1202         int ret = 0;
1203         struct omap_overlay *ovl;
1204         struct omapvideo_info *ovid;
1205         struct omap_vout_device *vout = fh;
1206         struct v4l2_window *win = &f->fmt.win;
1207
1208         mutex_lock(&vout->lock);
1209         ovid = &vout->vid_info;
1210         ovl = ovid->overlays[0];
1211
1212         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1213         if (!ret) {
1214                 /* Video1 plane does not support global alpha on OMAP3 */
1215                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1216                         vout->win.global_alpha = 255;
1217                 else
1218                         vout->win.global_alpha = f->fmt.win.global_alpha;
1219
1220                 vout->win.chromakey = f->fmt.win.chromakey;
1221         }
1222         mutex_unlock(&vout->lock);
1223         return ret;
1224 }
1225
1226 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1227                         struct v4l2_format *f)
1228 {
1229         u32 key_value =  0;
1230         struct omap_overlay *ovl;
1231         struct omapvideo_info *ovid;
1232         struct omap_vout_device *vout = fh;
1233         struct omap_overlay_manager_info info;
1234         struct v4l2_window *win = &f->fmt.win;
1235
1236         ovid = &vout->vid_info;
1237         ovl = ovid->overlays[0];
1238
1239         win->w = vout->win.w;
1240         win->field = vout->win.field;
1241         win->global_alpha = vout->win.global_alpha;
1242
1243         if (ovl->manager && ovl->manager->get_manager_info) {
1244                 ovl->manager->get_manager_info(ovl->manager, &info);
1245                 key_value = info.trans_key;
1246         }
1247         win->chromakey = key_value;
1248         return 0;
1249 }
1250
1251 static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1252 {
1253         struct omap_vout_device *vout = fh;
1254         struct v4l2_pix_format *pix = &vout->pix;
1255
1256         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1257                 return -EINVAL;
1258
1259         switch (sel->target) {
1260         case V4L2_SEL_TGT_CROP:
1261                 sel->r = vout->crop;
1262                 break;
1263         case V4L2_SEL_TGT_CROP_DEFAULT:
1264                 omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
1265                 break;
1266         case V4L2_SEL_TGT_CROP_BOUNDS:
1267                 /* Width and height are always even */
1268                 sel->r.width = pix->width & ~1;
1269                 sel->r.height = pix->height & ~1;
1270                 break;
1271         default:
1272                 return -EINVAL;
1273         }
1274         return 0;
1275 }
1276
1277 static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1278 {
1279         int ret = -EINVAL;
1280         struct omap_vout_device *vout = fh;
1281         struct omapvideo_info *ovid;
1282         struct omap_overlay *ovl;
1283         struct omap_video_timings *timing;
1284         struct omap_dss_device *dssdev;
1285
1286         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1287                 return -EINVAL;
1288
1289         if (sel->target != V4L2_SEL_TGT_CROP)
1290                 return -EINVAL;
1291
1292         if (vout->streaming)
1293                 return -EBUSY;
1294
1295         mutex_lock(&vout->lock);
1296         ovid = &vout->vid_info;
1297         ovl = ovid->overlays[0];
1298         /* get the display device attached to the overlay */
1299         dssdev = ovl->get_device(ovl);
1300
1301         if (!dssdev) {
1302                 ret = -EINVAL;
1303                 goto s_crop_err;
1304         }
1305
1306         timing = &dssdev->panel.timings;
1307
1308         if (is_rotation_90_or_270(vout)) {
1309                 vout->fbuf.fmt.height = timing->x_res;
1310                 vout->fbuf.fmt.width = timing->y_res;
1311         } else {
1312                 vout->fbuf.fmt.height = timing->y_res;
1313                 vout->fbuf.fmt.width = timing->x_res;
1314         }
1315
1316         ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1317                                  &vout->fbuf, &sel->r);
1318
1319 s_crop_err:
1320         mutex_unlock(&vout->lock);
1321         return ret;
1322 }
1323
1324 static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
1325 {
1326         struct omap_vout_device *vout =
1327                 container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
1328         int ret = 0;
1329
1330         switch (ctrl->id) {
1331         case V4L2_CID_ROTATE: {
1332                 struct omapvideo_info *ovid;
1333                 int rotation = ctrl->val;
1334
1335                 ovid = &vout->vid_info;
1336
1337                 mutex_lock(&vout->lock);
1338                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1339                         mutex_unlock(&vout->lock);
1340                         ret = -ERANGE;
1341                         break;
1342                 }
1343
1344                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1345                         mutex_unlock(&vout->lock);
1346                         ret = -EINVAL;
1347                         break;
1348                 }
1349
1350                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1351                                                         vout->mirror)) {
1352                         mutex_unlock(&vout->lock);
1353                         ret = -EINVAL;
1354                         break;
1355                 }
1356                 mutex_unlock(&vout->lock);
1357                 break;
1358         }
1359         case V4L2_CID_BG_COLOR:
1360         {
1361                 struct omap_overlay *ovl;
1362                 unsigned int color = ctrl->val;
1363                 struct omap_overlay_manager_info info;
1364
1365                 ovl = vout->vid_info.overlays[0];
1366
1367                 mutex_lock(&vout->lock);
1368                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1369                         mutex_unlock(&vout->lock);
1370                         ret = -EINVAL;
1371                         break;
1372                 }
1373
1374                 ovl->manager->get_manager_info(ovl->manager, &info);
1375                 info.default_color = color;
1376                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1377                         mutex_unlock(&vout->lock);
1378                         ret = -EINVAL;
1379                         break;
1380                 }
1381                 mutex_unlock(&vout->lock);
1382                 break;
1383         }
1384         case V4L2_CID_VFLIP:
1385         {
1386                 struct omapvideo_info *ovid;
1387                 unsigned int mirror = ctrl->val;
1388
1389                 ovid = &vout->vid_info;
1390
1391                 mutex_lock(&vout->lock);
1392                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1393                         mutex_unlock(&vout->lock);
1394                         ret = -ERANGE;
1395                         break;
1396                 }
1397
1398                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1399                         mutex_unlock(&vout->lock);
1400                         ret = -EINVAL;
1401                         break;
1402                 }
1403                 vout->mirror = mirror;
1404                 mutex_unlock(&vout->lock);
1405                 break;
1406         }
1407         default:
1408                 return -EINVAL;
1409         }
1410         return ret;
1411 }
1412
1413 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
1414         .s_ctrl = omap_vout_s_ctrl,
1415 };
1416
1417 static int vidioc_reqbufs(struct file *file, void *fh,
1418                         struct v4l2_requestbuffers *req)
1419 {
1420         int ret = 0;
1421         unsigned int i, num_buffers = 0;
1422         struct omap_vout_device *vout = fh;
1423         struct videobuf_queue *q = &vout->vbq;
1424
1425         if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1426                 return -EINVAL;
1427         /* if memory is not mmp or userptr
1428            return error */
1429         if ((V4L2_MEMORY_MMAP != req->memory) &&
1430                         (V4L2_MEMORY_USERPTR != req->memory))
1431                 return -EINVAL;
1432
1433         mutex_lock(&vout->lock);
1434         /* Cannot be requested when streaming is on */
1435         if (vout->streaming) {
1436                 ret = -EBUSY;
1437                 goto reqbuf_err;
1438         }
1439
1440         /* If buffers are already allocated free them */
1441         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1442                 if (vout->mmap_count) {
1443                         ret = -EBUSY;
1444                         goto reqbuf_err;
1445                 }
1446                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1447                         video1_numbuffers : video2_numbuffers;
1448                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1449                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1450                                         vout->buffer_size);
1451                         vout->buf_virt_addr[i] = 0;
1452                         vout->buf_phy_addr[i] = 0;
1453                 }
1454                 vout->buffer_allocated = num_buffers;
1455                 videobuf_mmap_free(q);
1456         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1457                 if (vout->buffer_allocated) {
1458                         videobuf_mmap_free(q);
1459                         for (i = 0; i < vout->buffer_allocated; i++) {
1460                                 kfree(q->bufs[i]);
1461                                 q->bufs[i] = NULL;
1462                         }
1463                         vout->buffer_allocated = 0;
1464                 }
1465         }
1466
1467         /*store the memory type in data structure */
1468         vout->memory = req->memory;
1469
1470         INIT_LIST_HEAD(&vout->dma_queue);
1471
1472         /* call videobuf_reqbufs api */
1473         ret = videobuf_reqbufs(q, req);
1474         if (ret < 0)
1475                 goto reqbuf_err;
1476
1477         vout->buffer_allocated = req->count;
1478
1479 reqbuf_err:
1480         mutex_unlock(&vout->lock);
1481         return ret;
1482 }
1483
1484 static int vidioc_querybuf(struct file *file, void *fh,
1485                         struct v4l2_buffer *b)
1486 {
1487         struct omap_vout_device *vout = fh;
1488
1489         return videobuf_querybuf(&vout->vbq, b);
1490 }
1491
1492 static int vidioc_qbuf(struct file *file, void *fh,
1493                         struct v4l2_buffer *buffer)
1494 {
1495         struct omap_vout_device *vout = fh;
1496         struct videobuf_queue *q = &vout->vbq;
1497
1498         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1499                         (buffer->index >= vout->buffer_allocated) ||
1500                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1501                 return -EINVAL;
1502         }
1503         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1504                 if ((buffer->length < vout->pix.sizeimage) ||
1505                                 (0 == buffer->m.userptr)) {
1506                         return -EINVAL;
1507                 }
1508         }
1509
1510         if ((is_rotation_enabled(vout)) &&
1511                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1512                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1513                                 "DMA Channel not allocated for Rotation\n");
1514                 return -EINVAL;
1515         }
1516
1517         return videobuf_qbuf(q, buffer);
1518 }
1519
1520 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1521 {
1522         struct omap_vout_device *vout = fh;
1523         struct videobuf_queue *q = &vout->vbq;
1524
1525         int ret;
1526         u32 addr;
1527         unsigned long size;
1528         struct videobuf_buffer *vb;
1529
1530         vb = q->bufs[b->index];
1531
1532         if (!vout->streaming)
1533                 return -EINVAL;
1534
1535         if (file->f_flags & O_NONBLOCK)
1536                 /* Call videobuf_dqbuf for non blocking mode */
1537                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1538         else
1539                 /* Call videobuf_dqbuf for  blocking mode */
1540                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1541
1542         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1543         size = (unsigned long) vb->size;
1544         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1545                                 size, DMA_TO_DEVICE);
1546         return ret;
1547 }
1548
1549 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1550 {
1551         int ret = 0, j;
1552         u32 addr = 0, mask = 0;
1553         struct omap_vout_device *vout = fh;
1554         struct videobuf_queue *q = &vout->vbq;
1555         struct omapvideo_info *ovid = &vout->vid_info;
1556
1557         mutex_lock(&vout->lock);
1558
1559         if (vout->streaming) {
1560                 ret = -EBUSY;
1561                 goto streamon_err;
1562         }
1563
1564         ret = videobuf_streamon(q);
1565         if (ret)
1566                 goto streamon_err;
1567
1568         if (list_empty(&vout->dma_queue)) {
1569                 ret = -EIO;
1570                 goto streamon_err1;
1571         }
1572
1573         /* Get the next frame from the buffer queue */
1574         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1575                         struct videobuf_buffer, queue);
1576         /* Remove buffer from the buffer queue */
1577         list_del(&vout->cur_frm->queue);
1578         /* Mark state of the current frame to active */
1579         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1580         /* Initialize field_id and started member */
1581         vout->field_id = 0;
1582
1583         /* set flag here. Next QBUF will start DMA */
1584         vout->streaming = true;
1585
1586         vout->first_int = 1;
1587
1588         if (omap_vout_calculate_offset(vout)) {
1589                 ret = -EINVAL;
1590                 goto streamon_err1;
1591         }
1592         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1593                 + vout->cropped_offset;
1594
1595         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1596                 | DISPC_IRQ_VSYNC2;
1597
1598         /* First save the configuration in ovelray structure */
1599         ret = omapvid_init(vout, addr);
1600         if (ret) {
1601                 v4l2_err(&vout->vid_dev->v4l2_dev,
1602                                 "failed to set overlay info\n");
1603                 goto streamon_err1;
1604         }
1605
1606         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1607
1608         /* Enable the pipeline and set the Go bit */
1609         ret = omapvid_apply_changes(vout);
1610         if (ret)
1611                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1612
1613         for (j = 0; j < ovid->num_overlays; j++) {
1614                 struct omap_overlay *ovl = ovid->overlays[j];
1615                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1616
1617                 if (dssdev) {
1618                         ret = ovl->enable(ovl);
1619                         if (ret)
1620                                 goto streamon_err1;
1621                 }
1622         }
1623
1624         ret = 0;
1625
1626 streamon_err1:
1627         if (ret)
1628                 ret = videobuf_streamoff(q);
1629 streamon_err:
1630         mutex_unlock(&vout->lock);
1631         return ret;
1632 }
1633
1634 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1635 {
1636         u32 mask = 0;
1637         int ret = 0, j;
1638         struct omap_vout_device *vout = fh;
1639         struct omapvideo_info *ovid = &vout->vid_info;
1640
1641         if (!vout->streaming)
1642                 return -EINVAL;
1643
1644         vout->streaming = false;
1645         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1646                 | DISPC_IRQ_VSYNC2;
1647
1648         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1649
1650         for (j = 0; j < ovid->num_overlays; j++) {
1651                 struct omap_overlay *ovl = ovid->overlays[j];
1652                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1653
1654                 if (dssdev)
1655                         ovl->disable(ovl);
1656         }
1657
1658         /* Turn of the pipeline */
1659         ret = omapvid_apply_changes(vout);
1660         if (ret)
1661                 v4l2_err(&vout->vid_dev->v4l2_dev,
1662                          "failed to change mode in streamoff\n");
1663
1664         INIT_LIST_HEAD(&vout->dma_queue);
1665         ret = videobuf_streamoff(&vout->vbq);
1666
1667         return ret;
1668 }
1669
1670 static int vidioc_s_fbuf(struct file *file, void *fh,
1671                                 const struct v4l2_framebuffer *a)
1672 {
1673         int enable = 0;
1674         struct omap_overlay *ovl;
1675         struct omapvideo_info *ovid;
1676         struct omap_vout_device *vout = fh;
1677         struct omap_overlay_manager_info info;
1678         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1679
1680         ovid = &vout->vid_info;
1681         ovl = ovid->overlays[0];
1682
1683         /* OMAP DSS doesn't support Source and Destination color
1684            key together */
1685         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1686                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1687                 return -EINVAL;
1688         /* OMAP DSS Doesn't support the Destination color key
1689            and alpha blending together */
1690         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1691                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1692                 return -EINVAL;
1693
1694         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1695                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1696                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1697         } else
1698                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1699
1700         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1701                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1702                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1703         } else
1704                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1705
1706         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1707                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1708                 enable = 1;
1709         else
1710                 enable = 0;
1711         if (ovl->manager && ovl->manager->get_manager_info &&
1712                         ovl->manager->set_manager_info) {
1713
1714                 ovl->manager->get_manager_info(ovl->manager, &info);
1715                 info.trans_enabled = enable;
1716                 info.trans_key_type = key_type;
1717                 info.trans_key = vout->win.chromakey;
1718
1719                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1720                         return -EINVAL;
1721         }
1722         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1723                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1724                 enable = 1;
1725         } else {
1726                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1727                 enable = 0;
1728         }
1729         if (ovl->manager && ovl->manager->get_manager_info &&
1730                         ovl->manager->set_manager_info) {
1731                 ovl->manager->get_manager_info(ovl->manager, &info);
1732                 /* enable this only if there is no zorder cap */
1733                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1734                         info.partial_alpha_enabled = enable;
1735                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1736                         return -EINVAL;
1737         }
1738
1739         return 0;
1740 }
1741
1742 static int vidioc_g_fbuf(struct file *file, void *fh,
1743                 struct v4l2_framebuffer *a)
1744 {
1745         struct omap_overlay *ovl;
1746         struct omapvideo_info *ovid;
1747         struct omap_vout_device *vout = fh;
1748         struct omap_overlay_manager_info info;
1749
1750         ovid = &vout->vid_info;
1751         ovl = ovid->overlays[0];
1752
1753         /* The video overlay must stay within the framebuffer and can't be
1754            positioned independently. */
1755         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1756         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1757                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1758
1759         if (ovl->manager && ovl->manager->get_manager_info) {
1760                 ovl->manager->get_manager_info(ovl->manager, &info);
1761                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1762                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1763                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1764                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1765         }
1766         if (ovl->manager && ovl->manager->get_manager_info) {
1767                 ovl->manager->get_manager_info(ovl->manager, &info);
1768                 if (info.partial_alpha_enabled)
1769                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1770         }
1771
1772         return 0;
1773 }
1774
1775 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1776         .vidioc_querycap                        = vidioc_querycap,
1777         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1778         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1779         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1780         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1781         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1782         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1783         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1784         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1785         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1786         .vidioc_g_selection                     = vidioc_g_selection,
1787         .vidioc_s_selection                     = vidioc_s_selection,
1788         .vidioc_reqbufs                         = vidioc_reqbufs,
1789         .vidioc_querybuf                        = vidioc_querybuf,
1790         .vidioc_qbuf                            = vidioc_qbuf,
1791         .vidioc_dqbuf                           = vidioc_dqbuf,
1792         .vidioc_streamon                        = vidioc_streamon,
1793         .vidioc_streamoff                       = vidioc_streamoff,
1794 };
1795
1796 static const struct v4l2_file_operations omap_vout_fops = {
1797         .owner          = THIS_MODULE,
1798         .poll           = omap_vout_poll,
1799         .unlocked_ioctl = video_ioctl2,
1800         .mmap           = omap_vout_mmap,
1801         .open           = omap_vout_open,
1802         .release        = omap_vout_release,
1803 };
1804
1805 /* Init functions used during driver initialization */
1806 /* Initial setup of video_data */
1807 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1808 {
1809         struct video_device *vfd;
1810         struct v4l2_pix_format *pix;
1811         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1812         struct omap_dss_device *display = ovl->get_device(ovl);
1813         struct v4l2_ctrl_handler *hdl;
1814
1815         /* set the default pix */
1816         pix = &vout->pix;
1817
1818         /* Set the default picture of QVGA  */
1819         pix->width = QQVGA_WIDTH;
1820         pix->height = QQVGA_HEIGHT;
1821
1822         /* Default pixel format is RGB 5-6-5 */
1823         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1824         pix->field = V4L2_FIELD_ANY;
1825         pix->bytesperline = pix->width * 2;
1826         pix->sizeimage = pix->bytesperline * pix->height;
1827         pix->colorspace = V4L2_COLORSPACE_JPEG;
1828
1829         vout->bpp = RGB565_BPP;
1830         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1831         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1832
1833         /* Set the data structures for the overlay parameters*/
1834         vout->win.global_alpha = 255;
1835         vout->fbuf.flags = 0;
1836         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1837                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1838         vout->win.chromakey = 0;
1839
1840         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1841
1842         hdl = &vout->ctrl_handler;
1843         v4l2_ctrl_handler_init(hdl, 3);
1844         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1845                           V4L2_CID_ROTATE, 0, 270, 90, 0);
1846         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1847                           V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1848         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1849                           V4L2_CID_VFLIP, 0, 1, 1, 0);
1850         if (hdl->error)
1851                 return hdl->error;
1852
1853         vout->rotation = 0;
1854         vout->mirror = false;
1855         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1856                 vout->vrfb_bpp = 2;
1857
1858         /* initialize the video_device struct */
1859         vfd = vout->vfd = video_device_alloc();
1860
1861         if (!vfd) {
1862                 printk(KERN_ERR VOUT_NAME
1863                        ": could not allocate video device struct\n");
1864                 v4l2_ctrl_handler_free(hdl);
1865                 return -ENOMEM;
1866         }
1867         vfd->ctrl_handler = hdl;
1868         vfd->release = video_device_release;
1869         vfd->ioctl_ops = &vout_ioctl_ops;
1870
1871         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1872
1873         vfd->fops = &omap_vout_fops;
1874         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1875         vfd->vfl_dir = VFL_DIR_TX;
1876         mutex_init(&vout->lock);
1877
1878         vfd->minor = -1;
1879         return 0;
1880
1881 }
1882
1883 /* Setup video buffers */
1884 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1885                 int vid_num)
1886 {
1887         u32 numbuffers;
1888         int ret = 0, i;
1889         struct omapvideo_info *ovid;
1890         struct omap_vout_device *vout;
1891         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1892         struct omap2video_device *vid_dev =
1893                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1894
1895         vout = vid_dev->vouts[vid_num];
1896         ovid = &vout->vid_info;
1897
1898         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1899         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1900         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1901
1902         for (i = 0; i < numbuffers; i++) {
1903                 vout->buf_virt_addr[i] =
1904                         omap_vout_alloc_buffer(vout->buffer_size,
1905                                         (u32 *) &vout->buf_phy_addr[i]);
1906                 if (!vout->buf_virt_addr[i]) {
1907                         numbuffers = i;
1908                         ret = -ENOMEM;
1909                         goto free_buffers;
1910                 }
1911         }
1912
1913         vout->cropped_offset = 0;
1914
1915         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1916                 bool static_vrfb_allocation = (vid_num == 0) ?
1917                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1918                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1919                                 static_vrfb_allocation);
1920         }
1921
1922         return ret;
1923
1924 free_buffers:
1925         for (i = 0; i < numbuffers; i++) {
1926                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1927                                                 vout->buffer_size);
1928                 vout->buf_virt_addr[i] = 0;
1929                 vout->buf_phy_addr[i] = 0;
1930         }
1931         return ret;
1932
1933 }
1934
1935 /* Create video out devices */
1936 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1937 {
1938         int ret = 0, k;
1939         struct omap_vout_device *vout;
1940         struct video_device *vfd = NULL;
1941         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1942         struct omap2video_device *vid_dev = container_of(v4l2_dev,
1943                         struct omap2video_device, v4l2_dev);
1944
1945         for (k = 0; k < pdev->num_resources; k++) {
1946
1947                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1948                 if (!vout) {
1949                         dev_err(&pdev->dev, ": could not allocate memory\n");
1950                         return -ENOMEM;
1951                 }
1952
1953                 vout->vid = k;
1954                 vid_dev->vouts[k] = vout;
1955                 vout->vid_dev = vid_dev;
1956                 /* Select video2 if only 1 overlay is controlled by V4L2 */
1957                 if (pdev->num_resources == 1)
1958                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1959                 else
1960                         /* Else select video1 and video2 one by one. */
1961                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1962                 vout->vid_info.num_overlays = 1;
1963                 vout->vid_info.id = k + 1;
1964
1965                 /* Set VRFB as rotation_type for omap2 and omap3 */
1966                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1967                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1968
1969                 /* Setup the default configuration for the video devices
1970                  */
1971                 if (omap_vout_setup_video_data(vout) != 0) {
1972                         ret = -ENOMEM;
1973                         goto error;
1974                 }
1975
1976                 /* Allocate default number of buffers for the video streaming
1977                  * and reserve the VRFB space for rotation
1978                  */
1979                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1980                         ret = -ENOMEM;
1981                         goto error1;
1982                 }
1983
1984                 /* Register the Video device with V4L2
1985                  */
1986                 vfd = vout->vfd;
1987                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
1988                         dev_err(&pdev->dev,
1989                                 ": Could not register Video for Linux device\n");
1990                         vfd->minor = -1;
1991                         ret = -ENODEV;
1992                         goto error2;
1993                 }
1994                 video_set_drvdata(vfd, vout);
1995
1996                 dev_info(&pdev->dev,
1997                          ": registered and initialized video device %d\n",
1998                          vfd->minor);
1999                 if (k == (pdev->num_resources - 1))
2000                         return 0;
2001
2002                 continue;
2003 error2:
2004                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2005                         omap_vout_release_vrfb(vout);
2006                 omap_vout_free_buffers(vout);
2007 error1:
2008                 video_device_release(vfd);
2009 error:
2010                 kfree(vout);
2011                 return ret;
2012         }
2013
2014         return -ENODEV;
2015 }
2016 /* Driver functions */
2017 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2018 {
2019         struct video_device *vfd;
2020         struct omapvideo_info *ovid;
2021
2022         if (!vout)
2023                 return;
2024
2025         vfd = vout->vfd;
2026         ovid = &vout->vid_info;
2027         if (vfd) {
2028                 if (!video_is_registered(vfd)) {
2029                         /*
2030                          * The device was never registered, so release the
2031                          * video_device struct directly.
2032                          */
2033                         video_device_release(vfd);
2034                 } else {
2035                         /*
2036                          * The unregister function will release the video_device
2037                          * struct as well as unregistering it.
2038                          */
2039                         video_unregister_device(vfd);
2040                 }
2041         }
2042         v4l2_ctrl_handler_free(&vout->ctrl_handler);
2043         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2044                 omap_vout_release_vrfb(vout);
2045                 /* Free the VRFB buffer if allocated
2046                  * init time
2047                  */
2048                 if (vout->vrfb_static_allocation)
2049                         omap_vout_free_vrfb_buffers(vout);
2050         }
2051         omap_vout_free_buffers(vout);
2052
2053         kfree(vout);
2054 }
2055
2056 static int omap_vout_remove(struct platform_device *pdev)
2057 {
2058         int k;
2059         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2060         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2061                         omap2video_device, v4l2_dev);
2062
2063         v4l2_device_unregister(v4l2_dev);
2064         for (k = 0; k < pdev->num_resources; k++)
2065                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2066
2067         for (k = 0; k < vid_dev->num_displays; k++) {
2068                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2069                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2070
2071                 omap_dss_put_device(vid_dev->displays[k]);
2072         }
2073         kfree(vid_dev);
2074         return 0;
2075 }
2076
2077 static int __init omap_vout_probe(struct platform_device *pdev)
2078 {
2079         int ret = 0, i;
2080         struct omap_overlay *ovl;
2081         struct omap_dss_device *dssdev = NULL;
2082         struct omap_dss_device *def_display;
2083         struct omap2video_device *vid_dev = NULL;
2084
2085         if (omapdss_is_initialized() == false)
2086                 return -EPROBE_DEFER;
2087
2088         ret = omapdss_compat_init();
2089         if (ret) {
2090                 dev_err(&pdev->dev, "failed to init dss\n");
2091                 return ret;
2092         }
2093
2094         if (pdev->num_resources == 0) {
2095                 dev_err(&pdev->dev, "probed for an unknown device\n");
2096                 ret = -ENODEV;
2097                 goto err_dss_init;
2098         }
2099
2100         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2101         if (vid_dev == NULL) {
2102                 ret = -ENOMEM;
2103                 goto err_dss_init;
2104         }
2105
2106         vid_dev->num_displays = 0;
2107         for_each_dss_dev(dssdev) {
2108                 omap_dss_get_device(dssdev);
2109
2110                 if (!dssdev->driver) {
2111                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2112                                         dssdev->name);
2113                         omap_dss_put_device(dssdev);
2114                         continue;
2115                 }
2116
2117                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2118         }
2119
2120         if (vid_dev->num_displays == 0) {
2121                 dev_err(&pdev->dev, "no displays\n");
2122                 ret = -EINVAL;
2123                 goto probe_err0;
2124         }
2125
2126         vid_dev->num_overlays = omap_dss_get_num_overlays();
2127         for (i = 0; i < vid_dev->num_overlays; i++)
2128                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2129
2130         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2131         for (i = 0; i < vid_dev->num_managers; i++)
2132                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2133
2134         /* Get the Video1 overlay and video2 overlay.
2135          * Setup the Display attached to that overlays
2136          */
2137         for (i = 1; i < vid_dev->num_overlays; i++) {
2138                 ovl = omap_dss_get_overlay(i);
2139                 dssdev = ovl->get_device(ovl);
2140
2141                 if (dssdev) {
2142                         def_display = dssdev;
2143                 } else {
2144                         dev_warn(&pdev->dev, "cannot find display\n");
2145                         def_display = NULL;
2146                 }
2147                 if (def_display) {
2148                         struct omap_dss_driver *dssdrv = def_display->driver;
2149
2150                         ret = dssdrv->enable(def_display);
2151                         if (ret) {
2152                                 /* Here we are not considering a error
2153                                  *  as display may be enabled by frame
2154                                  *  buffer driver
2155                                  */
2156                                 dev_warn(&pdev->dev,
2157                                         "'%s' Display already enabled\n",
2158                                         def_display->name);
2159                         }
2160                 }
2161         }
2162
2163         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2164                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2165                 ret = -ENODEV;
2166                 goto probe_err1;
2167         }
2168
2169         ret = omap_vout_create_video_devices(pdev);
2170         if (ret)
2171                 goto probe_err2;
2172
2173         for (i = 0; i < vid_dev->num_displays; i++) {
2174                 struct omap_dss_device *display = vid_dev->displays[i];
2175
2176                 if (display->driver->update)
2177                         display->driver->update(display, 0, 0,
2178                                         display->panel.timings.x_res,
2179                                         display->panel.timings.y_res);
2180         }
2181         return 0;
2182
2183 probe_err2:
2184         v4l2_device_unregister(&vid_dev->v4l2_dev);
2185 probe_err1:
2186         for (i = 1; i < vid_dev->num_overlays; i++) {
2187                 def_display = NULL;
2188                 ovl = omap_dss_get_overlay(i);
2189                 dssdev = ovl->get_device(ovl);
2190
2191                 if (dssdev)
2192                         def_display = dssdev;
2193
2194                 if (def_display && def_display->driver)
2195                         def_display->driver->disable(def_display);
2196         }
2197 probe_err0:
2198         kfree(vid_dev);
2199 err_dss_init:
2200         omapdss_compat_uninit();
2201         return ret;
2202 }
2203
2204 static struct platform_driver omap_vout_driver = {
2205         .driver = {
2206                 .name = VOUT_NAME,
2207         },
2208         .remove = omap_vout_remove,
2209 };
2210
2211 static int __init omap_vout_init(void)
2212 {
2213         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2214                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2215                 return -EINVAL;
2216         }
2217         return 0;
2218 }
2219
2220 static void omap_vout_cleanup(void)
2221 {
2222         platform_driver_unregister(&omap_vout_driver);
2223 }
2224
2225 late_initcall(omap_vout_init);
2226 module_exit(omap_vout_cleanup);