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, u32 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                         } else {
 708                                 if (!is_rotation_enabled(vout))
 709                                         break;
 710                         /* Free the VRFB buffers if no space for V4L2 buffers */
 711                         for (j = i; j < *count; j++) {
 712                                 omap_vout_free_buffer(
 713                                                 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                 }
 720                 vout->buf_virt_addr[i] = virt_addr;
 721                 vout->buf_phy_addr[i] = phy_addr;
 722         }
 723         *count = vout->buffer_allocated = i;
 724
 725         return 0;
 726 }
 727
 728 /*
 729  * Free the V4L2 buffers additionally allocated than default
 730  * number of buffers
 731  */
 732 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
 733 {
 734         int num_buffers = 0, i;
 735
 736         num_buffers = (vout->vid == OMAP_VIDEO1) ?
 737                 video1_numbuffers : video2_numbuffers;
 738
 739         for (i = num_buffers; i < vout->buffer_allocated; i++) {
 740                 if (vout->buf_virt_addr[i])
 741                         omap_vout_free_buffer(vout->buf_virt_addr[i],
 742                                         vout->buffer_size);
 743
 744                 vout->buf_virt_addr[i] = 0;
 745                 vout->buf_phy_addr[i] = 0;
 746         }
 747         vout->buffer_allocated = num_buffers;
 748 }
 749
 750 /*
 751  * This function will be called when VIDIOC_QBUF ioctl is called.
 752  * It prepare buffers before give out for the display. This function
 753  * converts user space virtual address into physical address if userptr memory
 754  * exchange mechanism is used. If rotation is enabled, it copies entire
 755  * buffer into VRFB memory space before giving it to the DSS.
 756  */
 757 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
 758                         struct videobuf_buffer *vb,
 759                         enum v4l2_field field)
 760 {
 761         struct omap_vout_device *vout = q->priv_data;
 762         struct omapvideo_info *ovid = &vout->vid_info;
 763
 764         if (VIDEOBUF_NEEDS_INIT == vb->state) {
 765                 vb->width = vout->pix.width;
 766                 vb->height = vout->pix.height;
 767                 vb->size = vb->width * vb->height * vout->bpp;
 768                 vb->field = field;
 769         }
 770         vb->state = VIDEOBUF_PREPARED;
 771         /* if user pointer memory mechanism is used, get the physical
 772          * address of the buffer
 773          */
 774         if (V4L2_MEMORY_USERPTR == vb->memory) {
 775                 int ret;
 776
 777                 if (0 == vb->baddr)
 778                         return -EINVAL;
 779                 /* Physical address */
 780                 ret = omap_vout_get_userptr(vb, vb->baddr,
 781                                 (u32 *)&vout->queued_buf_addr[vb->i]);
 782                 if (ret < 0)
 783                         return ret;
 784         } else {
 785                 unsigned long addr, dma_addr;
 786                 unsigned long size;
 787
 788                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
 789                 size = (unsigned long) vb->size;
 790
 791                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
 792                                 size, DMA_TO_DEVICE);
 793                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
 794                         v4l2_err(&vout->vid_dev->v4l2_dev,
 795                                  "dma_map_single failed\n");
 796
 797                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
 798         }
 799
 800         if (ovid->rotation_type == VOUT_ROT_VRFB)
 801                 return omap_vout_prepare_vrfb(vout, vb);
 802         else
 803                 return 0;
 804 }
 805
 806 /*
 807  * Buffer queue function will be called from the videobuf layer when _QBUF
 808  * ioctl is called. It is used to enqueue buffer, which is ready to be
 809  * displayed.
 810  */
 811 static void omap_vout_buffer_queue(struct videobuf_queue *q,
 812                           struct videobuf_buffer *vb)
 813 {
 814         struct omap_vout_device *vout = q->priv_data;
 815
 816         /* Driver is also maintainig a queue. So enqueue buffer in the driver
 817          * queue */
 818         list_add_tail(&vb->queue, &vout->dma_queue);
 819
 820         vb->state = VIDEOBUF_QUEUED;
 821 }
 822
 823 /*
 824  * Buffer release function is called from videobuf layer to release buffer
 825  * which are already allocated
 826  */
 827 static void omap_vout_buffer_release(struct videobuf_queue *q,
 828                             struct videobuf_buffer *vb)
 829 {
 830         vb->state = VIDEOBUF_NEEDS_INIT;
 831         if (vb->memory == V4L2_MEMORY_USERPTR && vb->priv) {
 832                 struct frame_vector *vec = vb->priv;
 833
 834                 put_vaddr_frames(vec);
 835                 frame_vector_destroy(vec);
 836         }
 837 }
 838
 839 /*
 840  *  File operations
 841  */
 842 static unsigned int omap_vout_poll(struct file *file,
 843                                    struct poll_table_struct *wait)
 844 {
 845         struct omap_vout_device *vout = file->private_data;
 846         struct videobuf_queue *q = &vout->vbq;
 847
 848         return videobuf_poll_stream(file, q, wait);
 849 }
 850
 851 static void omap_vout_vm_open(struct vm_area_struct *vma)
 852 {
 853         struct omap_vout_device *vout = vma->vm_private_data;
 854
 855         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 856                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 857         vout->mmap_count++;
 858 }
 859
 860 static void omap_vout_vm_close(struct vm_area_struct *vma)
 861 {
 862         struct omap_vout_device *vout = vma->vm_private_data;
 863
 864         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 865                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
 866         vout->mmap_count--;
 867 }
 868
 869 static const struct vm_operations_struct omap_vout_vm_ops = {
 870         .open   = omap_vout_vm_open,
 871         .close  = omap_vout_vm_close,
 872 };
 873
 874 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
 875 {
 876         int i;
 877         void *pos;
 878         unsigned long start = vma->vm_start;
 879         unsigned long size = (vma->vm_end - vma->vm_start);
 880         struct omap_vout_device *vout = file->private_data;
 881         struct videobuf_queue *q = &vout->vbq;
 882
 883         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 884                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
 885                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
 886
 887         /* look for the buffer to map */
 888         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
 889                 if (NULL == q->bufs[i])
 890                         continue;
 891                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
 892                         continue;
 893                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
 894                         break;
 895         }
 896
 897         if (VIDEO_MAX_FRAME == i) {
 898                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
 899                                 "offset invalid [offset=0x%lx]\n",
 900                                 (vma->vm_pgoff << PAGE_SHIFT));
 901                 return -EINVAL;
 902         }
 903         /* Check the size of the buffer */
 904         if (size > vout->buffer_size) {
 905                 v4l2_err(&vout->vid_dev->v4l2_dev,
 906                                 "insufficient memory [%lu] [%u]\n",
 907                                 size, vout->buffer_size);
 908                 return -ENOMEM;
 909         }
 910
 911         q->bufs[i]->baddr = vma->vm_start;
 912
 913         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 914         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
 915         vma->vm_ops = &omap_vout_vm_ops;
 916         vma->vm_private_data = (void *) vout;
 917         pos = (void *)vout->buf_virt_addr[i];
 918         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
 919         while (size > 0) {
 920                 unsigned long pfn;
 921                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
 922                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
 923                         return -EAGAIN;
 924                 start += PAGE_SIZE;
 925                 pos += PAGE_SIZE;
 926                 size -= PAGE_SIZE;
 927         }
 928         vout->mmap_count++;
 929         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 930
 931         return 0;
 932 }
 933
 934 static int omap_vout_release(struct file *file)
 935 {
 936         unsigned int ret, i;
 937         struct videobuf_queue *q;
 938         struct omapvideo_info *ovid;
 939         struct omap_vout_device *vout = file->private_data;
 940
 941         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
 942         ovid = &vout->vid_info;
 943
 944         if (!vout)
 945                 return 0;
 946
 947         q = &vout->vbq;
 948         /* Disable all the overlay managers connected with this interface */
 949         for (i = 0; i < ovid->num_overlays; i++) {
 950                 struct omap_overlay *ovl = ovid->overlays[i];
 951                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
 952
 953                 if (dssdev)
 954                         ovl->disable(ovl);
 955         }
 956         /* Turn off the pipeline */
 957         ret = omapvid_apply_changes(vout);
 958         if (ret)
 959                 v4l2_warn(&vout->vid_dev->v4l2_dev,
 960                                 "Unable to apply changes\n");
 961
 962         /* Free all buffers */
 963         omap_vout_free_extra_buffers(vout);
 964
 965         /* Free the VRFB buffers only if they are allocated
 966          * during reqbufs.  Don't free if init time allocated
 967          */
 968         if (ovid->rotation_type == VOUT_ROT_VRFB) {
 969                 if (!vout->vrfb_static_allocation)
 970                         omap_vout_free_vrfb_buffers(vout);
 971         }
 972         videobuf_mmap_free(q);
 973
 974         /* Even if apply changes fails we should continue
 975            freeing allocated memory */
 976         if (vout->streaming) {
 977                 u32 mask = 0;
 978
 979                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
 980                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
 981                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
 982                 vout->streaming = false;
 983
 984                 videobuf_streamoff(q);
 985                 videobuf_queue_cancel(q);
 986         }
 987
 988         if (vout->mmap_count != 0)
 989                 vout->mmap_count = 0;
 990
 991         vout->opened -= 1;
 992         file->private_data = NULL;
 993
 994         if (vout->buffer_allocated)
 995                 videobuf_mmap_free(q);
 996
 997         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
 998         return ret;
 999 }
1000
1001 static int omap_vout_open(struct file *file)
1002 {
1003         struct videobuf_queue *q;
1004         struct omap_vout_device *vout = NULL;
1005
1006         vout = video_drvdata(file);
1007
1008         if (vout == NULL)
1009                 return -ENODEV;
1010
1011         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1012
1013         /* for now, we only support single open */
1014         if (vout->opened)
1015                 return -EBUSY;
1016
1017         vout->opened += 1;
1018
1019         file->private_data = vout;
1020         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1021
1022         q = &vout->vbq;
1023         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1024         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1025         video_vbq_ops.buf_release = omap_vout_buffer_release;
1026         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1027         spin_lock_init(&vout->vbq_lock);
1028
1029         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1030                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1031                         sizeof(struct videobuf_buffer), vout, NULL);
1032
1033         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1034         return 0;
1035 }
1036
1037 /*
1038  * V4L2 ioctls
1039  */
1040 static int vidioc_querycap(struct file *file, void *fh,
1041                 struct v4l2_capability *cap)
1042 {
1043         struct omap_vout_device *vout = fh;
1044
1045         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1046         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1047         cap->bus_info[0] = '\0';
1048         cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1049                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1050         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1051
1052         return 0;
1053 }
1054
1055 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1056                         struct v4l2_fmtdesc *fmt)
1057 {
1058         int index = fmt->index;
1059
1060         if (index >= NUM_OUTPUT_FORMATS)
1061                 return -EINVAL;
1062
1063         fmt->flags = omap_formats[index].flags;
1064         strlcpy(fmt->description, omap_formats[index].description,
1065                         sizeof(fmt->description));
1066         fmt->pixelformat = omap_formats[index].pixelformat;
1067
1068         return 0;
1069 }
1070
1071 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1072                         struct v4l2_format *f)
1073 {
1074         struct omap_vout_device *vout = fh;
1075
1076         f->fmt.pix = vout->pix;
1077         return 0;
1078
1079 }
1080
1081 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1082                         struct v4l2_format *f)
1083 {
1084         struct omap_overlay *ovl;
1085         struct omapvideo_info *ovid;
1086         struct omap_video_timings *timing;
1087         struct omap_vout_device *vout = fh;
1088         struct omap_dss_device *dssdev;
1089
1090         ovid = &vout->vid_info;
1091         ovl = ovid->overlays[0];
1092         /* get the display device attached to the overlay */
1093         dssdev = ovl->get_device(ovl);
1094
1095         if (!dssdev)
1096                 return -EINVAL;
1097
1098         timing = &dssdev->panel.timings;
1099
1100         vout->fbuf.fmt.height = timing->y_res;
1101         vout->fbuf.fmt.width = timing->x_res;
1102
1103         omap_vout_try_format(&f->fmt.pix);
1104         return 0;
1105 }
1106
1107 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1108                         struct v4l2_format *f)
1109 {
1110         int ret, bpp;
1111         struct omap_overlay *ovl;
1112         struct omapvideo_info *ovid;
1113         struct omap_video_timings *timing;
1114         struct omap_vout_device *vout = fh;
1115         struct omap_dss_device *dssdev;
1116
1117         if (vout->streaming)
1118                 return -EBUSY;
1119
1120         mutex_lock(&vout->lock);
1121
1122         ovid = &vout->vid_info;
1123         ovl = ovid->overlays[0];
1124         dssdev = ovl->get_device(ovl);
1125
1126         /* get the display device attached to the overlay */
1127         if (!dssdev) {
1128                 ret = -EINVAL;
1129                 goto s_fmt_vid_out_exit;
1130         }
1131         timing = &dssdev->panel.timings;
1132
1133         /* We dont support RGB24-packed mode if vrfb rotation
1134          * is enabled*/
1135         if ((is_rotation_enabled(vout)) &&
1136                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1137                 ret = -EINVAL;
1138                 goto s_fmt_vid_out_exit;
1139         }
1140
1141         /* get the framebuffer parameters */
1142
1143         if (is_rotation_90_or_270(vout)) {
1144                 vout->fbuf.fmt.height = timing->x_res;
1145                 vout->fbuf.fmt.width = timing->y_res;
1146         } else {
1147                 vout->fbuf.fmt.height = timing->y_res;
1148                 vout->fbuf.fmt.width = timing->x_res;
1149         }
1150
1151         /* change to samller size is OK */
1152
1153         bpp = omap_vout_try_format(&f->fmt.pix);
1154         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1155
1156         /* try & set the new output format */
1157         vout->bpp = bpp;
1158         vout->pix = f->fmt.pix;
1159         vout->vrfb_bpp = 1;
1160
1161         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1162         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1163                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1164                 vout->vrfb_bpp = 2;
1165
1166         /* set default crop and win */
1167         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1168
1169         ret = 0;
1170
1171 s_fmt_vid_out_exit:
1172         mutex_unlock(&vout->lock);
1173         return ret;
1174 }
1175
1176 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1177                         struct v4l2_format *f)
1178 {
1179         int ret = 0;
1180         struct omap_vout_device *vout = fh;
1181         struct omap_overlay *ovl;
1182         struct omapvideo_info *ovid;
1183         struct v4l2_window *win = &f->fmt.win;
1184
1185         ovid = &vout->vid_info;
1186         ovl = ovid->overlays[0];
1187
1188         ret = omap_vout_try_window(&vout->fbuf, win);
1189
1190         if (!ret) {
1191                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1192                         win->global_alpha = 255;
1193                 else
1194                         win->global_alpha = f->fmt.win.global_alpha;
1195         }
1196
1197         return ret;
1198 }
1199
1200 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1201                         struct v4l2_format *f)
1202 {
1203         int ret = 0;
1204         struct omap_overlay *ovl;
1205         struct omapvideo_info *ovid;
1206         struct omap_vout_device *vout = fh;
1207         struct v4l2_window *win = &f->fmt.win;
1208
1209         mutex_lock(&vout->lock);
1210         ovid = &vout->vid_info;
1211         ovl = ovid->overlays[0];
1212
1213         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1214         if (!ret) {
1215                 /* Video1 plane does not support global alpha on OMAP3 */
1216                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1217                         vout->win.global_alpha = 255;
1218                 else
1219                         vout->win.global_alpha = f->fmt.win.global_alpha;
1220
1221                 vout->win.chromakey = f->fmt.win.chromakey;
1222         }
1223         mutex_unlock(&vout->lock);
1224         return ret;
1225 }
1226
1227 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1228                         struct v4l2_format *f)
1229 {
1230         u32 key_value =  0;
1231         struct omap_overlay *ovl;
1232         struct omapvideo_info *ovid;
1233         struct omap_vout_device *vout = fh;
1234         struct omap_overlay_manager_info info;
1235         struct v4l2_window *win = &f->fmt.win;
1236
1237         ovid = &vout->vid_info;
1238         ovl = ovid->overlays[0];
1239
1240         win->w = vout->win.w;
1241         win->field = vout->win.field;
1242         win->global_alpha = vout->win.global_alpha;
1243
1244         if (ovl->manager && ovl->manager->get_manager_info) {
1245                 ovl->manager->get_manager_info(ovl->manager, &info);
1246                 key_value = info.trans_key;
1247         }
1248         win->chromakey = key_value;
1249         return 0;
1250 }
1251
1252 static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1253 {
1254         struct omap_vout_device *vout = fh;
1255         struct v4l2_pix_format *pix = &vout->pix;
1256
1257         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1258                 return -EINVAL;
1259
1260         switch (sel->target) {
1261         case V4L2_SEL_TGT_CROP:
1262                 sel->r = vout->crop;
1263                 break;
1264         case V4L2_SEL_TGT_CROP_DEFAULT:
1265                 omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
1266                 break;
1267         case V4L2_SEL_TGT_CROP_BOUNDS:
1268                 /* Width and height are always even */
1269                 sel->r.width = pix->width & ~1;
1270                 sel->r.height = pix->height & ~1;
1271                 break;
1272         default:
1273                 return -EINVAL;
1274         }
1275         return 0;
1276 }
1277
1278 static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1279 {
1280         int ret = -EINVAL;
1281         struct omap_vout_device *vout = fh;
1282         struct omapvideo_info *ovid;
1283         struct omap_overlay *ovl;
1284         struct omap_video_timings *timing;
1285         struct omap_dss_device *dssdev;
1286
1287         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1288                 return -EINVAL;
1289
1290         if (sel->target != V4L2_SEL_TGT_CROP)
1291                 return -EINVAL;
1292
1293         if (vout->streaming)
1294                 return -EBUSY;
1295
1296         mutex_lock(&vout->lock);
1297         ovid = &vout->vid_info;
1298         ovl = ovid->overlays[0];
1299         /* get the display device attached to the overlay */
1300         dssdev = ovl->get_device(ovl);
1301
1302         if (!dssdev) {
1303                 ret = -EINVAL;
1304                 goto s_crop_err;
1305         }
1306
1307         timing = &dssdev->panel.timings;
1308
1309         if (is_rotation_90_or_270(vout)) {
1310                 vout->fbuf.fmt.height = timing->x_res;
1311                 vout->fbuf.fmt.width = timing->y_res;
1312         } else {
1313                 vout->fbuf.fmt.height = timing->y_res;
1314                 vout->fbuf.fmt.width = timing->x_res;
1315         }
1316
1317         ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1318                                  &vout->fbuf, &sel->r);
1319
1320 s_crop_err:
1321         mutex_unlock(&vout->lock);
1322         return ret;
1323 }
1324
1325 static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
1326 {
1327         struct omap_vout_device *vout =
1328                 container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
1329         int ret = 0;
1330
1331         switch (ctrl->id) {
1332         case V4L2_CID_ROTATE: {
1333                 struct omapvideo_info *ovid;
1334                 int rotation = ctrl->val;
1335
1336                 ovid = &vout->vid_info;
1337
1338                 mutex_lock(&vout->lock);
1339                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1340                         mutex_unlock(&vout->lock);
1341                         ret = -ERANGE;
1342                         break;
1343                 }
1344
1345                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1346                         mutex_unlock(&vout->lock);
1347                         ret = -EINVAL;
1348                         break;
1349                 }
1350
1351                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1352                                                         vout->mirror)) {
1353                         mutex_unlock(&vout->lock);
1354                         ret = -EINVAL;
1355                         break;
1356                 }
1357                 mutex_unlock(&vout->lock);
1358                 break;
1359         }
1360         case V4L2_CID_BG_COLOR:
1361         {
1362                 struct omap_overlay *ovl;
1363                 unsigned int color = ctrl->val;
1364                 struct omap_overlay_manager_info info;
1365
1366                 ovl = vout->vid_info.overlays[0];
1367
1368                 mutex_lock(&vout->lock);
1369                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1370                         mutex_unlock(&vout->lock);
1371                         ret = -EINVAL;
1372                         break;
1373                 }
1374
1375                 ovl->manager->get_manager_info(ovl->manager, &info);
1376                 info.default_color = color;
1377                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1378                         mutex_unlock(&vout->lock);
1379                         ret = -EINVAL;
1380                         break;
1381                 }
1382                 mutex_unlock(&vout->lock);
1383                 break;
1384         }
1385         case V4L2_CID_VFLIP:
1386         {
1387                 struct omapvideo_info *ovid;
1388                 unsigned int mirror = ctrl->val;
1389
1390                 ovid = &vout->vid_info;
1391
1392                 mutex_lock(&vout->lock);
1393                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1394                         mutex_unlock(&vout->lock);
1395                         ret = -ERANGE;
1396                         break;
1397                 }
1398
1399                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1400                         mutex_unlock(&vout->lock);
1401                         ret = -EINVAL;
1402                         break;
1403                 }
1404                 vout->mirror = mirror;
1405                 mutex_unlock(&vout->lock);
1406                 break;
1407         }
1408         default:
1409                 return -EINVAL;
1410         }
1411         return ret;
1412 }
1413
1414 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
1415         .s_ctrl = omap_vout_s_ctrl,
1416 };
1417
1418 static int vidioc_reqbufs(struct file *file, void *fh,
1419                         struct v4l2_requestbuffers *req)
1420 {
1421         int ret = 0;
1422         unsigned int i, num_buffers = 0;
1423         struct omap_vout_device *vout = fh;
1424         struct videobuf_queue *q = &vout->vbq;
1425
1426         if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1427                 return -EINVAL;
1428         /* if memory is not mmp or userptr
1429            return error */
1430         if ((V4L2_MEMORY_MMAP != req->memory) &&
1431                         (V4L2_MEMORY_USERPTR != req->memory))
1432                 return -EINVAL;
1433
1434         mutex_lock(&vout->lock);
1435         /* Cannot be requested when streaming is on */
1436         if (vout->streaming) {
1437                 ret = -EBUSY;
1438                 goto reqbuf_err;
1439         }
1440
1441         /* If buffers are already allocated free them */
1442         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1443                 if (vout->mmap_count) {
1444                         ret = -EBUSY;
1445                         goto reqbuf_err;
1446                 }
1447                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1448                         video1_numbuffers : video2_numbuffers;
1449                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1450                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1451                                         vout->buffer_size);
1452                         vout->buf_virt_addr[i] = 0;
1453                         vout->buf_phy_addr[i] = 0;
1454                 }
1455                 vout->buffer_allocated = num_buffers;
1456                 videobuf_mmap_free(q);
1457         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1458                 if (vout->buffer_allocated) {
1459                         videobuf_mmap_free(q);
1460                         for (i = 0; i < vout->buffer_allocated; i++) {
1461                                 kfree(q->bufs[i]);
1462                                 q->bufs[i] = NULL;
1463                         }
1464                         vout->buffer_allocated = 0;
1465                 }
1466         }
1467
1468         /*store the memory type in data structure */
1469         vout->memory = req->memory;
1470
1471         INIT_LIST_HEAD(&vout->dma_queue);
1472
1473         /* call videobuf_reqbufs api */
1474         ret = videobuf_reqbufs(q, req);
1475         if (ret < 0)
1476                 goto reqbuf_err;
1477
1478         vout->buffer_allocated = req->count;
1479
1480 reqbuf_err:
1481         mutex_unlock(&vout->lock);
1482         return ret;
1483 }
1484
1485 static int vidioc_querybuf(struct file *file, void *fh,
1486                         struct v4l2_buffer *b)
1487 {
1488         struct omap_vout_device *vout = fh;
1489
1490         return videobuf_querybuf(&vout->vbq, b);
1491 }
1492
1493 static int vidioc_qbuf(struct file *file, void *fh,
1494                         struct v4l2_buffer *buffer)
1495 {
1496         struct omap_vout_device *vout = fh;
1497         struct videobuf_queue *q = &vout->vbq;
1498
1499         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1500                         (buffer->index >= vout->buffer_allocated) ||
1501                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1502                 return -EINVAL;
1503         }
1504         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1505                 if ((buffer->length < vout->pix.sizeimage) ||
1506                                 (0 == buffer->m.userptr)) {
1507                         return -EINVAL;
1508                 }
1509         }
1510
1511         if ((is_rotation_enabled(vout)) &&
1512                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1513                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1514                                 "DMA Channel not allocated for Rotation\n");
1515                 return -EINVAL;
1516         }
1517
1518         return videobuf_qbuf(q, buffer);
1519 }
1520
1521 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1522 {
1523         struct omap_vout_device *vout = fh;
1524         struct videobuf_queue *q = &vout->vbq;
1525
1526         int ret;
1527         u32 addr;
1528         unsigned long size;
1529         struct videobuf_buffer *vb;
1530
1531         vb = q->bufs[b->index];
1532
1533         if (!vout->streaming)
1534                 return -EINVAL;
1535
1536         if (file->f_flags & O_NONBLOCK)
1537                 /* Call videobuf_dqbuf for non blocking mode */
1538                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1539         else
1540                 /* Call videobuf_dqbuf for  blocking mode */
1541                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1542
1543         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1544         size = (unsigned long) vb->size;
1545         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1546                                 size, DMA_TO_DEVICE);
1547         return ret;
1548 }
1549
1550 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1551 {
1552         int ret = 0, j;
1553         u32 addr = 0, mask = 0;
1554         struct omap_vout_device *vout = fh;
1555         struct videobuf_queue *q = &vout->vbq;
1556         struct omapvideo_info *ovid = &vout->vid_info;
1557
1558         mutex_lock(&vout->lock);
1559
1560         if (vout->streaming) {
1561                 ret = -EBUSY;
1562                 goto streamon_err;
1563         }
1564
1565         ret = videobuf_streamon(q);
1566         if (ret)
1567                 goto streamon_err;
1568
1569         if (list_empty(&vout->dma_queue)) {
1570                 ret = -EIO;
1571                 goto streamon_err1;
1572         }
1573
1574         /* Get the next frame from the buffer queue */
1575         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1576                         struct videobuf_buffer, queue);
1577         /* Remove buffer from the buffer queue */
1578         list_del(&vout->cur_frm->queue);
1579         /* Mark state of the current frame to active */
1580         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1581         /* Initialize field_id and started member */
1582         vout->field_id = 0;
1583
1584         /* set flag here. Next QBUF will start DMA */
1585         vout->streaming = true;
1586
1587         vout->first_int = 1;
1588
1589         if (omap_vout_calculate_offset(vout)) {
1590                 ret = -EINVAL;
1591                 goto streamon_err1;
1592         }
1593         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1594                 + vout->cropped_offset;
1595
1596         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1597                 | DISPC_IRQ_VSYNC2;
1598
1599         /* First save the configuration in ovelray structure */
1600         ret = omapvid_init(vout, addr);
1601         if (ret) {
1602                 v4l2_err(&vout->vid_dev->v4l2_dev,
1603                                 "failed to set overlay info\n");
1604                 goto streamon_err1;
1605         }
1606
1607         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1608
1609         /* Enable the pipeline and set the Go bit */
1610         ret = omapvid_apply_changes(vout);
1611         if (ret)
1612                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1613
1614         for (j = 0; j < ovid->num_overlays; j++) {
1615                 struct omap_overlay *ovl = ovid->overlays[j];
1616                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1617
1618                 if (dssdev) {
1619                         ret = ovl->enable(ovl);
1620                         if (ret)
1621                                 goto streamon_err1;
1622                 }
1623         }
1624
1625         ret = 0;
1626
1627 streamon_err1:
1628         if (ret)
1629                 ret = videobuf_streamoff(q);
1630 streamon_err:
1631         mutex_unlock(&vout->lock);
1632         return ret;
1633 }
1634
1635 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1636 {
1637         u32 mask = 0;
1638         int ret = 0, j;
1639         struct omap_vout_device *vout = fh;
1640         struct omapvideo_info *ovid = &vout->vid_info;
1641
1642         if (!vout->streaming)
1643                 return -EINVAL;
1644
1645         vout->streaming = false;
1646         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1647                 | DISPC_IRQ_VSYNC2;
1648
1649         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1650
1651         for (j = 0; j < ovid->num_overlays; j++) {
1652                 struct omap_overlay *ovl = ovid->overlays[j];
1653                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1654
1655                 if (dssdev)
1656                         ovl->disable(ovl);
1657         }
1658
1659         /* Turn of the pipeline */
1660         ret = omapvid_apply_changes(vout);
1661         if (ret)
1662                 v4l2_err(&vout->vid_dev->v4l2_dev,
1663                          "failed to change mode in streamoff\n");
1664
1665         INIT_LIST_HEAD(&vout->dma_queue);
1666         ret = videobuf_streamoff(&vout->vbq);
1667
1668         return ret;
1669 }
1670
1671 static int vidioc_s_fbuf(struct file *file, void *fh,
1672                                 const struct v4l2_framebuffer *a)
1673 {
1674         int enable = 0;
1675         struct omap_overlay *ovl;
1676         struct omapvideo_info *ovid;
1677         struct omap_vout_device *vout = fh;
1678         struct omap_overlay_manager_info info;
1679         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1680
1681         ovid = &vout->vid_info;
1682         ovl = ovid->overlays[0];
1683
1684         /* OMAP DSS doesn't support Source and Destination color
1685            key together */
1686         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1687                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1688                 return -EINVAL;
1689         /* OMAP DSS Doesn't support the Destination color key
1690            and alpha blending together */
1691         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1692                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1693                 return -EINVAL;
1694
1695         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1696                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1697                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1698         } else
1699                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1700
1701         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1702                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1703                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1704         } else
1705                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1706
1707         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1708                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1709                 enable = 1;
1710         else
1711                 enable = 0;
1712         if (ovl->manager && ovl->manager->get_manager_info &&
1713                         ovl->manager->set_manager_info) {
1714
1715                 ovl->manager->get_manager_info(ovl->manager, &info);
1716                 info.trans_enabled = enable;
1717                 info.trans_key_type = key_type;
1718                 info.trans_key = vout->win.chromakey;
1719
1720                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1721                         return -EINVAL;
1722         }
1723         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1724                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1725                 enable = 1;
1726         } else {
1727                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1728                 enable = 0;
1729         }
1730         if (ovl->manager && ovl->manager->get_manager_info &&
1731                         ovl->manager->set_manager_info) {
1732                 ovl->manager->get_manager_info(ovl->manager, &info);
1733                 /* enable this only if there is no zorder cap */
1734                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1735                         info.partial_alpha_enabled = enable;
1736                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1737                         return -EINVAL;
1738         }
1739
1740         return 0;
1741 }
1742
1743 static int vidioc_g_fbuf(struct file *file, void *fh,
1744                 struct v4l2_framebuffer *a)
1745 {
1746         struct omap_overlay *ovl;
1747         struct omapvideo_info *ovid;
1748         struct omap_vout_device *vout = fh;
1749         struct omap_overlay_manager_info info;
1750
1751         ovid = &vout->vid_info;
1752         ovl = ovid->overlays[0];
1753
1754         /* The video overlay must stay within the framebuffer and can't be
1755            positioned independently. */
1756         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1757         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1758                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1759
1760         if (ovl->manager && ovl->manager->get_manager_info) {
1761                 ovl->manager->get_manager_info(ovl->manager, &info);
1762                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1763                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1764                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1765                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1766         }
1767         if (ovl->manager && ovl->manager->get_manager_info) {
1768                 ovl->manager->get_manager_info(ovl->manager, &info);
1769                 if (info.partial_alpha_enabled)
1770                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1771         }
1772
1773         return 0;
1774 }
1775
1776 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1777         .vidioc_querycap                        = vidioc_querycap,
1778         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1779         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1780         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1781         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1782         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1783         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1784         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1785         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1786         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1787         .vidioc_g_selection                     = vidioc_g_selection,
1788         .vidioc_s_selection                     = vidioc_s_selection,
1789         .vidioc_reqbufs                         = vidioc_reqbufs,
1790         .vidioc_querybuf                        = vidioc_querybuf,
1791         .vidioc_qbuf                            = vidioc_qbuf,
1792         .vidioc_dqbuf                           = vidioc_dqbuf,
1793         .vidioc_streamon                        = vidioc_streamon,
1794         .vidioc_streamoff                       = vidioc_streamoff,
1795 };
1796
1797 static const struct v4l2_file_operations omap_vout_fops = {
1798         .owner          = THIS_MODULE,
1799         .poll           = omap_vout_poll,
1800         .unlocked_ioctl = video_ioctl2,
1801         .mmap           = omap_vout_mmap,
1802         .open           = omap_vout_open,
1803         .release        = omap_vout_release,
1804 };
1805
1806 /* Init functions used during driver initialization */
1807 /* Initial setup of video_data */
1808 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1809 {
1810         struct video_device *vfd;
1811         struct v4l2_pix_format *pix;
1812         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1813         struct omap_dss_device *display = ovl->get_device(ovl);
1814         struct v4l2_ctrl_handler *hdl;
1815
1816         /* set the default pix */
1817         pix = &vout->pix;
1818
1819         /* Set the default picture of QVGA  */
1820         pix->width = QQVGA_WIDTH;
1821         pix->height = QQVGA_HEIGHT;
1822
1823         /* Default pixel format is RGB 5-6-5 */
1824         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1825         pix->field = V4L2_FIELD_ANY;
1826         pix->bytesperline = pix->width * 2;
1827         pix->sizeimage = pix->bytesperline * pix->height;
1828         pix->colorspace = V4L2_COLORSPACE_JPEG;
1829
1830         vout->bpp = RGB565_BPP;
1831         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1832         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1833
1834         /* Set the data structures for the overlay parameters*/
1835         vout->win.global_alpha = 255;
1836         vout->fbuf.flags = 0;
1837         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1838                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1839         vout->win.chromakey = 0;
1840
1841         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1842
1843         hdl = &vout->ctrl_handler;
1844         v4l2_ctrl_handler_init(hdl, 3);
1845         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1846                           V4L2_CID_ROTATE, 0, 270, 90, 0);
1847         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1848                           V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1849         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1850                           V4L2_CID_VFLIP, 0, 1, 1, 0);
1851         if (hdl->error)
1852                 return hdl->error;
1853
1854         vout->rotation = 0;
1855         vout->mirror = false;
1856         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1857                 vout->vrfb_bpp = 2;
1858
1859         /* initialize the video_device struct */
1860         vfd = vout->vfd = video_device_alloc();
1861
1862         if (!vfd) {
1863                 printk(KERN_ERR VOUT_NAME
1864                        ": could not allocate video device struct\n");
1865                 v4l2_ctrl_handler_free(hdl);
1866                 return -ENOMEM;
1867         }
1868         vfd->ctrl_handler = hdl;
1869         vfd->release = video_device_release;
1870         vfd->ioctl_ops = &vout_ioctl_ops;
1871
1872         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1873
1874         vfd->fops = &omap_vout_fops;
1875         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1876         vfd->vfl_dir = VFL_DIR_TX;
1877         mutex_init(&vout->lock);
1878
1879         vfd->minor = -1;
1880         return 0;
1881
1882 }
1883
1884 /* Setup video buffers */
1885 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1886                 int vid_num)
1887 {
1888         u32 numbuffers;
1889         int ret = 0, i;
1890         struct omapvideo_info *ovid;
1891         struct omap_vout_device *vout;
1892         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1893         struct omap2video_device *vid_dev =
1894                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1895
1896         vout = vid_dev->vouts[vid_num];
1897         ovid = &vout->vid_info;
1898
1899         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1900         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1901         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1902
1903         for (i = 0; i < numbuffers; i++) {
1904                 vout->buf_virt_addr[i] =
1905                         omap_vout_alloc_buffer(vout->buffer_size,
1906                                         (u32 *) &vout->buf_phy_addr[i]);
1907                 if (!vout->buf_virt_addr[i]) {
1908                         numbuffers = i;
1909                         ret = -ENOMEM;
1910                         goto free_buffers;
1911                 }
1912         }
1913
1914         vout->cropped_offset = 0;
1915
1916         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1917                 bool static_vrfb_allocation = (vid_num == 0) ?
1918                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1919                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1920                                 static_vrfb_allocation);
1921         }
1922
1923         return ret;
1924
1925 free_buffers:
1926         for (i = 0; i < numbuffers; i++) {
1927                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1928                                                 vout->buffer_size);
1929                 vout->buf_virt_addr[i] = 0;
1930                 vout->buf_phy_addr[i] = 0;
1931         }
1932         return ret;
1933
1934 }
1935
1936 /* Create video out devices */
1937 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1938 {
1939         int ret = 0, k;
1940         struct omap_vout_device *vout;
1941         struct video_device *vfd = NULL;
1942         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1943         struct omap2video_device *vid_dev = container_of(v4l2_dev,
1944                         struct omap2video_device, v4l2_dev);
1945
1946         for (k = 0; k < pdev->num_resources; k++) {
1947
1948                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1949                 if (!vout) {
1950                         dev_err(&pdev->dev, ": could not allocate memory\n");
1951                         return -ENOMEM;
1952                 }
1953
1954                 vout->vid = k;
1955                 vid_dev->vouts[k] = vout;
1956                 vout->vid_dev = vid_dev;
1957                 /* Select video2 if only 1 overlay is controlled by V4L2 */
1958                 if (pdev->num_resources == 1)
1959                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1960                 else
1961                         /* Else select video1 and video2 one by one. */
1962                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1963                 vout->vid_info.num_overlays = 1;
1964                 vout->vid_info.id = k + 1;
1965
1966                 /* Set VRFB as rotation_type for omap2 and omap3 */
1967                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1968                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1969
1970                 /* Setup the default configuration for the video devices
1971                  */
1972                 if (omap_vout_setup_video_data(vout) != 0) {
1973                         ret = -ENOMEM;
1974                         goto error;
1975                 }
1976
1977                 /* Allocate default number of buffers for the video streaming
1978                  * and reserve the VRFB space for rotation
1979                  */
1980                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1981                         ret = -ENOMEM;
1982                         goto error1;
1983                 }
1984
1985                 /* Register the Video device with V4L2
1986                  */
1987                 vfd = vout->vfd;
1988                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
1989                         dev_err(&pdev->dev,
1990                                 ": Could not register Video for Linux device\n");
1991                         vfd->minor = -1;
1992                         ret = -ENODEV;
1993                         goto error2;
1994                 }
1995                 video_set_drvdata(vfd, vout);
1996
1997                 dev_info(&pdev->dev,
1998                          ": registered and initialized video device %d\n",
1999                          vfd->minor);
2000                 if (k == (pdev->num_resources - 1))
2001                         return 0;
2002
2003                 continue;
2004 error2:
2005                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2006                         omap_vout_release_vrfb(vout);
2007                 omap_vout_free_buffers(vout);
2008 error1:
2009                 video_device_release(vfd);
2010 error:
2011                 kfree(vout);
2012                 return ret;
2013         }
2014
2015         return -ENODEV;
2016 }
2017 /* Driver functions */
2018 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2019 {
2020         struct video_device *vfd;
2021         struct omapvideo_info *ovid;
2022
2023         if (!vout)
2024                 return;
2025
2026         vfd = vout->vfd;
2027         ovid = &vout->vid_info;
2028         if (vfd) {
2029                 if (!video_is_registered(vfd)) {
2030                         /*
2031                          * The device was never registered, so release the
2032                          * video_device struct directly.
2033                          */
2034                         video_device_release(vfd);
2035                 } else {
2036                         /*
2037                          * The unregister function will release the video_device
2038                          * struct as well as unregistering it.
2039                          */
2040                         video_unregister_device(vfd);
2041                 }
2042         }
2043         v4l2_ctrl_handler_free(&vout->ctrl_handler);
2044         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2045                 omap_vout_release_vrfb(vout);
2046                 /* Free the VRFB buffer if allocated
2047                  * init time
2048                  */
2049                 if (vout->vrfb_static_allocation)
2050                         omap_vout_free_vrfb_buffers(vout);
2051         }
2052         omap_vout_free_buffers(vout);
2053
2054         kfree(vout);
2055 }
2056
2057 static int omap_vout_remove(struct platform_device *pdev)
2058 {
2059         int k;
2060         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2061         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2062                         omap2video_device, v4l2_dev);
2063
2064         v4l2_device_unregister(v4l2_dev);
2065         for (k = 0; k < pdev->num_resources; k++)
2066                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2067
2068         for (k = 0; k < vid_dev->num_displays; k++) {
2069                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2070                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2071
2072                 omap_dss_put_device(vid_dev->displays[k]);
2073         }
2074         kfree(vid_dev);
2075         return 0;
2076 }
2077
2078 static int __init omap_vout_probe(struct platform_device *pdev)
2079 {
2080         int ret = 0, i;
2081         struct omap_overlay *ovl;
2082         struct omap_dss_device *dssdev = NULL;
2083         struct omap_dss_device *def_display;
2084         struct omap2video_device *vid_dev = NULL;
2085
2086         if (omapdss_is_initialized() == false)
2087                 return -EPROBE_DEFER;
2088
2089         ret = omapdss_compat_init();
2090         if (ret) {
2091                 dev_err(&pdev->dev, "failed to init dss\n");
2092                 return ret;
2093         }
2094
2095         if (pdev->num_resources == 0) {
2096                 dev_err(&pdev->dev, "probed for an unknown device\n");
2097                 ret = -ENODEV;
2098                 goto err_dss_init;
2099         }
2100
2101         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2102         if (vid_dev == NULL) {
2103                 ret = -ENOMEM;
2104                 goto err_dss_init;
2105         }
2106
2107         vid_dev->num_displays = 0;
2108         for_each_dss_dev(dssdev) {
2109                 omap_dss_get_device(dssdev);
2110
2111                 if (!dssdev->driver) {
2112                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2113                                         dssdev->name);
2114                         omap_dss_put_device(dssdev);
2115                         continue;
2116                 }
2117
2118                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2119         }
2120
2121         if (vid_dev->num_displays == 0) {
2122                 dev_err(&pdev->dev, "no displays\n");
2123                 ret = -EINVAL;
2124                 goto probe_err0;
2125         }
2126
2127         vid_dev->num_overlays = omap_dss_get_num_overlays();
2128         for (i = 0; i < vid_dev->num_overlays; i++)
2129                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2130
2131         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2132         for (i = 0; i < vid_dev->num_managers; i++)
2133                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2134
2135         /* Get the Video1 overlay and video2 overlay.
2136          * Setup the Display attached to that overlays
2137          */
2138         for (i = 1; i < vid_dev->num_overlays; i++) {
2139                 ovl = omap_dss_get_overlay(i);
2140                 dssdev = ovl->get_device(ovl);
2141
2142                 if (dssdev) {
2143                         def_display = dssdev;
2144                 } else {
2145                         dev_warn(&pdev->dev, "cannot find display\n");
2146                         def_display = NULL;
2147                 }
2148                 if (def_display) {
2149                         struct omap_dss_driver *dssdrv = def_display->driver;
2150
2151                         ret = dssdrv->enable(def_display);
2152                         if (ret) {
2153                                 /* Here we are not considering a error
2154                                  *  as display may be enabled by frame
2155                                  *  buffer driver
2156                                  */
2157                                 dev_warn(&pdev->dev,
2158                                         "'%s' Display already enabled\n",
2159                                         def_display->name);
2160                         }
2161                 }
2162         }
2163
2164         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2165                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2166                 ret = -ENODEV;
2167                 goto probe_err1;
2168         }
2169
2170         ret = omap_vout_create_video_devices(pdev);
2171         if (ret)
2172                 goto probe_err2;
2173
2174         for (i = 0; i < vid_dev->num_displays; i++) {
2175                 struct omap_dss_device *display = vid_dev->displays[i];
2176
2177                 if (display->driver->update)
2178                         display->driver->update(display, 0, 0,
2179                                         display->panel.timings.x_res,
2180                                         display->panel.timings.y_res);
2181         }
2182         return 0;
2183
2184 probe_err2:
2185         v4l2_device_unregister(&vid_dev->v4l2_dev);
2186 probe_err1:
2187         for (i = 1; i < vid_dev->num_overlays; i++) {
2188                 def_display = NULL;
2189                 ovl = omap_dss_get_overlay(i);
2190                 dssdev = ovl->get_device(ovl);
2191
2192                 if (dssdev)
2193                         def_display = dssdev;
2194
2195                 if (def_display && def_display->driver)
2196                         def_display->driver->disable(def_display);
2197         }
2198 probe_err0:
2199         kfree(vid_dev);
2200 err_dss_init:
2201         omapdss_compat_uninit();
2202         return ret;
2203 }
2204
2205 static struct platform_driver omap_vout_driver = {
2206         .driver = {
2207                 .name = VOUT_NAME,
2208         },
2209         .remove = omap_vout_remove,
2210 };
2211
2212 static int __init omap_vout_init(void)
2213 {
2214         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2215                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2216                 return -EINVAL;
2217         }
2218         return 0;
2219 }
2220
2221 static void omap_vout_cleanup(void)
2222 {
2223         platform_driver_unregister(&omap_vout_driver);
2224 }
2225
2226 late_initcall(omap_vout_init);
2227 module_exit(omap_vout_cleanup);