drivers/media/platform/davinci/vpbe_display.c

   1 /*
   2  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation version 2.
   7  *
   8  * This program is distributed WITHOUT ANY WARRANTY of any
   9  * kind, whether express or implied; without even the implied warranty
  10  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/module.h>
  16 #include <linux/errno.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/string.h>
  19 #include <linux/wait.h>
  20 #include <linux/time.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/irq.h>
  23 #include <linux/mm.h>
  24 #include <linux/mutex.h>
  25 #include <linux/videodev2.h>
  26 #include <linux/slab.h>
  27
  28 #include <asm/pgtable.h>
  29 #include <mach/cputype.h>
  30
  31 #include <media/v4l2-dev.h>
  32 #include <media/v4l2-common.h>
  33 #include <media/v4l2-ioctl.h>
  34 #include <media/v4l2-device.h>
  35 #include <media/davinci/vpbe_display.h>
  36 #include <media/davinci/vpbe_types.h>
  37 #include <media/davinci/vpbe.h>
  38 #include <media/davinci/vpbe_venc.h>
  39 #include <media/davinci/vpbe_osd.h>
  40 #include "vpbe_venc_regs.h"
  41
  42 #define VPBE_DISPLAY_DRIVER "vpbe-v4l2"
  43
  44 static int debug;
  45
  46 #define VPBE_DEFAULT_NUM_BUFS 3
  47
  48 module_param(debug, int, 0644);
  49
  50 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
  51                         struct vpbe_layer *layer);
  52
  53 static int venc_is_second_field(struct vpbe_display *disp_dev)
  54 {
  55         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
  56         int ret;
  57         int val;
  58
  59         ret = v4l2_subdev_call(vpbe_dev->venc,
  60                                core,
  61                                ioctl,
  62                                VENC_GET_FLD,
  63                                &val);
  64         if (ret < 0) {
  65                 v4l2_err(&vpbe_dev->v4l2_dev,
  66                          "Error in getting Field ID 0\n");
  67         }
  68         return val;
  69 }
  70
  71 static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
  72                                 struct vpbe_layer *layer)
  73 {
  74         if (layer->cur_frm == layer->next_frm)
  75                 return;
  76
  77         layer->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
  78         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
  79         /* Make cur_frm pointing to next_frm */
  80         layer->cur_frm = layer->next_frm;
  81 }
  82
  83 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
  84                                 struct vpbe_layer *layer)
  85 {
  86         struct osd_state *osd_device = disp_obj->osd_device;
  87         unsigned long addr;
  88
  89         spin_lock(&disp_obj->dma_queue_lock);
  90         if (list_empty(&layer->dma_queue) ||
  91                 (layer->cur_frm != layer->next_frm)) {
  92                 spin_unlock(&disp_obj->dma_queue_lock);
  93                 return;
  94         }
  95         /*
  96          * one field is displayed configure
  97          * the next frame if it is available
  98          * otherwise hold on current frame
  99          * Get next from the buffer queue
 100          */
 101         layer->next_frm = list_entry(layer->dma_queue.next,
 102                           struct  vpbe_disp_buffer, list);
 103         /* Remove that from the buffer queue */
 104         list_del(&layer->next_frm->list);
 105         spin_unlock(&disp_obj->dma_queue_lock);
 106         /* Mark state of the frame to active */
 107         layer->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
 108         addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb.vb2_buf, 0);
 109         osd_device->ops.start_layer(osd_device,
 110                         layer->layer_info.id,
 111                         addr,
 112                         disp_obj->cbcr_ofst);
 113 }
 114
 115 /* interrupt service routine */
 116 static irqreturn_t venc_isr(int irq, void *arg)
 117 {
 118         struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
 119         struct vpbe_layer *layer;
 120         static unsigned last_event;
 121         unsigned event = 0;
 122         int fid;
 123         int i;
 124
 125         if ((NULL == arg) || (NULL == disp_dev->dev[0]))
 126                 return IRQ_HANDLED;
 127
 128         if (venc_is_second_field(disp_dev))
 129                 event |= VENC_SECOND_FIELD;
 130         else
 131                 event |= VENC_FIRST_FIELD;
 132
 133         if (event == (last_event & ~VENC_END_OF_FRAME)) {
 134                 /*
 135                 * If the display is non-interlaced, then we need to flag the
 136                 * end-of-frame event at every interrupt regardless of the
 137                 * value of the FIDST bit.  We can conclude that the display is
 138                 * non-interlaced if the value of the FIDST bit is unchanged
 139                 * from the previous interrupt.
 140                 */
 141                 event |= VENC_END_OF_FRAME;
 142         } else if (event == VENC_SECOND_FIELD) {
 143                 /* end-of-frame for interlaced display */
 144                 event |= VENC_END_OF_FRAME;
 145         }
 146         last_event = event;
 147
 148         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
 149                 layer = disp_dev->dev[i];
 150
 151                 if (!vb2_start_streaming_called(&layer->buffer_queue))
 152                         continue;
 153
 154                 if (layer->layer_first_int) {
 155                         layer->layer_first_int = 0;
 156                         continue;
 157                 }
 158                 /* Check the field format */
 159                 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
 160                         (event & VENC_END_OF_FRAME)) {
 161                         /* Progressive mode */
 162
 163                         vpbe_isr_even_field(disp_dev, layer);
 164                         vpbe_isr_odd_field(disp_dev, layer);
 165                 } else {
 166                 /* Interlaced mode */
 167
 168                         layer->field_id ^= 1;
 169                         if (event & VENC_FIRST_FIELD)
 170                                 fid = 0;
 171                         else
 172                                 fid = 1;
 173
 174                         /*
 175                         * If field id does not match with store
 176                         * field id
 177                         */
 178                         if (fid != layer->field_id) {
 179                                 /* Make them in sync */
 180                                 layer->field_id = fid;
 181                                 continue;
 182                         }
 183                         /*
 184                         * device field id and local field id are
 185                         * in sync. If this is even field
 186                         */
 187                         if (0 == fid)
 188                                 vpbe_isr_even_field(disp_dev, layer);
 189                         else  /* odd field */
 190                                 vpbe_isr_odd_field(disp_dev, layer);
 191                 }
 192         }
 193
 194         return IRQ_HANDLED;
 195 }
 196
 197 /*
 198  * vpbe_buffer_prepare()
 199  * This is the callback function called from vb2_qbuf() function
 200  * the buffer is prepared and user space virtual address is converted into
 201  * physical address
 202  */
 203 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
 204 {
 205         struct vb2_queue *q = vb->vb2_queue;
 206         struct vpbe_layer *layer = vb2_get_drv_priv(q);
 207         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 208         unsigned long addr;
 209
 210         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 211                                 "vpbe_buffer_prepare\n");
 212
 213         vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
 214         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
 215                 return -EINVAL;
 216
 217         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
 218         if (!IS_ALIGNED(addr, 8)) {
 219                 v4l2_err(&vpbe_dev->v4l2_dev,
 220                          "buffer_prepare:offset is not aligned to 32 bytes\n");
 221                 return -EINVAL;
 222         }
 223         return 0;
 224 }
 225
 226 /*
 227  * vpbe_buffer_setup()
 228  * This function allocates memory for the buffers
 229  */
 230 static int
 231 vpbe_buffer_queue_setup(struct vb2_queue *vq,
 232                         unsigned int *nbuffers, unsigned int *nplanes,
 233                         unsigned int sizes[], struct device *alloc_devs[])
 234
 235 {
 236         /* Get the file handle object and layer object */
 237         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 238         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 239
 240         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
 241
 242         /* Store number of buffers allocated in numbuffer member */
 243         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
 244                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
 245
 246         if (*nplanes)
 247                 return sizes[0] < layer->pix_fmt.sizeimage ? -EINVAL : 0;
 248
 249         *nplanes = 1;
 250         sizes[0] = layer->pix_fmt.sizeimage;
 251
 252         return 0;
 253 }
 254
 255 /*
 256  * vpbe_buffer_queue()
 257  * This function adds the buffer to DMA queue
 258  */
 259 static void vpbe_buffer_queue(struct vb2_buffer *vb)
 260 {
 261         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 262         /* Get the file handle object and layer object */
 263         struct vpbe_disp_buffer *buf = container_of(vbuf,
 264                                 struct vpbe_disp_buffer, vb);
 265         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
 266         struct vpbe_display *disp = layer->disp_dev;
 267         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 268         unsigned long flags;
 269
 270         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 271                         "vpbe_buffer_queue\n");
 272
 273         /* add the buffer to the DMA queue */
 274         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 275         list_add_tail(&buf->list, &layer->dma_queue);
 276         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 277 }
 278
 279 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
 280 {
 281         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 282         struct osd_state *osd_device = layer->disp_dev->osd_device;
 283         int ret;
 284
 285          osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 286
 287         /* Get the next frame from the buffer queue */
 288         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
 289                                 struct vpbe_disp_buffer, list);
 290         /* Remove buffer from the buffer queue */
 291         list_del(&layer->cur_frm->list);
 292         /* Mark state of the current frame to active */
 293         layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
 294         /* Initialize field_id and started member */
 295         layer->field_id = 0;
 296
 297         /* Set parameters in OSD and VENC */
 298         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
 299         if (ret < 0) {
 300                 struct vpbe_disp_buffer *buf, *tmp;
 301
 302                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 303                                 VB2_BUF_STATE_QUEUED);
 304                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
 305                         list_del(&buf->list);
 306                         vb2_buffer_done(&buf->vb.vb2_buf,
 307                                         VB2_BUF_STATE_QUEUED);
 308                 }
 309
 310                 return ret;
 311         }
 312
 313         /*
 314          * if request format is yuv420 semiplanar, need to
 315          * enable both video windows
 316          */
 317         layer->layer_first_int = 1;
 318
 319         return ret;
 320 }
 321
 322 static void vpbe_stop_streaming(struct vb2_queue *vq)
 323 {
 324         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 325         struct osd_state *osd_device = layer->disp_dev->osd_device;
 326         struct vpbe_display *disp = layer->disp_dev;
 327         unsigned long flags;
 328
 329         if (!vb2_is_streaming(vq))
 330                 return;
 331
 332         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 333
 334         /* release all active buffers */
 335         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 336         if (layer->cur_frm == layer->next_frm) {
 337                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 338                                 VB2_BUF_STATE_ERROR);
 339         } else {
 340                 if (layer->cur_frm != NULL)
 341                         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 342                                         VB2_BUF_STATE_ERROR);
 343                 if (layer->next_frm != NULL)
 344                         vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 345                                         VB2_BUF_STATE_ERROR);
 346         }
 347
 348         while (!list_empty(&layer->dma_queue)) {
 349                 layer->next_frm = list_entry(layer->dma_queue.next,
 350                                                 struct vpbe_disp_buffer, list);
 351                 list_del(&layer->next_frm->list);
 352                 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 353                                 VB2_BUF_STATE_ERROR);
 354         }
 355         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 356 }
 357
 358 static struct vb2_ops video_qops = {
 359         .queue_setup = vpbe_buffer_queue_setup,
 360         .wait_prepare = vb2_ops_wait_prepare,
 361         .wait_finish = vb2_ops_wait_finish,
 362         .buf_prepare = vpbe_buffer_prepare,
 363         .start_streaming = vpbe_start_streaming,
 364         .stop_streaming = vpbe_stop_streaming,
 365         .buf_queue = vpbe_buffer_queue,
 366 };
 367
 368 static
 369 struct vpbe_layer*
 370 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
 371                         struct vpbe_layer *layer)
 372 {
 373         enum vpbe_display_device_id thiswin, otherwin;
 374         thiswin = layer->device_id;
 375
 376         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
 377         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
 378         return disp_dev->dev[otherwin];
 379 }
 380
 381 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
 382                         struct vpbe_layer *layer)
 383 {
 384         struct osd_layer_config *cfg  = &layer->layer_info.config;
 385         struct osd_state *osd_device = disp_dev->osd_device;
 386         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 387         unsigned long addr;
 388         int ret;
 389
 390         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
 391         /* Set address in the display registers */
 392         osd_device->ops.start_layer(osd_device,
 393                                     layer->layer_info.id,
 394                                     addr,
 395                                     disp_dev->cbcr_ofst);
 396
 397         ret = osd_device->ops.enable_layer(osd_device,
 398                                 layer->layer_info.id, 0);
 399         if (ret < 0) {
 400                 v4l2_err(&vpbe_dev->v4l2_dev,
 401                         "Error in enabling osd window layer 0\n");
 402                 return -1;
 403         }
 404
 405         /* Enable the window */
 406         layer->layer_info.enable = 1;
 407         if (cfg->pixfmt == PIXFMT_NV12) {
 408                 struct vpbe_layer *otherlayer =
 409                         _vpbe_display_get_other_win_layer(disp_dev, layer);
 410
 411                 ret = osd_device->ops.enable_layer(osd_device,
 412                                 otherlayer->layer_info.id, 1);
 413                 if (ret < 0) {
 414                         v4l2_err(&vpbe_dev->v4l2_dev,
 415                                 "Error in enabling osd window layer 1\n");
 416                         return -1;
 417                 }
 418                 otherlayer->layer_info.enable = 1;
 419         }
 420         return 0;
 421 }
 422
 423 static void
 424 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
 425                         struct vpbe_layer *layer,
 426                         int expected_xsize, int expected_ysize)
 427 {
 428         struct display_layer_info *layer_info = &layer->layer_info;
 429         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
 430         struct osd_layer_config *cfg  = &layer->layer_info.config;
 431         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 432         int calculated_xsize;
 433         int h_exp = 0;
 434         int v_exp = 0;
 435         int h_scale;
 436         int v_scale;
 437
 438         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
 439
 440         /*
 441          * Application initially set the image format. Current display
 442          * size is obtained from the vpbe display controller. expected_xsize
 443          * and expected_ysize are set through S_CROP ioctl. Based on this,
 444          * driver will calculate the scale factors for vertical and
 445          * horizontal direction so that the image is displayed scaled
 446          * and expanded. Application uses expansion to display the image
 447          * in a square pixel. Otherwise it is displayed using displays
 448          * pixel aspect ratio.It is expected that application chooses
 449          * the crop coordinates for cropped or scaled display. if crop
 450          * size is less than the image size, it is displayed cropped or
 451          * it is displayed scaled and/or expanded.
 452          *
 453          * to begin with, set the crop window same as expected. Later we
 454          * will override with scaled window size
 455          */
 456
 457         cfg->xsize = pixfmt->width;
 458         cfg->ysize = pixfmt->height;
 459         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
 460         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
 461         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
 462         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
 463
 464         if (pixfmt->width < expected_xsize) {
 465                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
 466                 if (h_scale < 2)
 467                         h_scale = 1;
 468                 else if (h_scale >= 4)
 469                         h_scale = 4;
 470                 else
 471                         h_scale = 2;
 472                 cfg->xsize *= h_scale;
 473                 if (cfg->xsize < expected_xsize) {
 474                         if ((standard_id & V4L2_STD_525_60) ||
 475                         (standard_id & V4L2_STD_625_50)) {
 476                                 calculated_xsize = (cfg->xsize *
 477                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
 478                                         VPBE_DISPLAY_H_EXP_RATIO_D;
 479                                 if (calculated_xsize <= expected_xsize) {
 480                                         h_exp = 1;
 481                                         cfg->xsize = calculated_xsize;
 482                                 }
 483                         }
 484                 }
 485                 if (h_scale == 2)
 486                         layer_info->h_zoom = ZOOM_X2;
 487                 else if (h_scale == 4)
 488                         layer_info->h_zoom = ZOOM_X4;
 489                 if (h_exp)
 490                         layer_info->h_exp = H_EXP_9_OVER_8;
 491         } else {
 492                 /* no scaling, only cropping. Set display area to crop area */
 493                 cfg->xsize = expected_xsize;
 494         }
 495
 496         if (pixfmt->height < expected_ysize) {
 497                 v_scale = expected_ysize / pixfmt->height;
 498                 if (v_scale < 2)
 499                         v_scale = 1;
 500                 else if (v_scale >= 4)
 501                         v_scale = 4;
 502                 else
 503                         v_scale = 2;
 504                 cfg->ysize *= v_scale;
 505                 if (cfg->ysize < expected_ysize) {
 506                         if ((standard_id & V4L2_STD_625_50)) {
 507                                 calculated_xsize = (cfg->ysize *
 508                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
 509                                         VPBE_DISPLAY_V_EXP_RATIO_D;
 510                                 if (calculated_xsize <= expected_ysize) {
 511                                         v_exp = 1;
 512                                         cfg->ysize = calculated_xsize;
 513                                 }
 514                         }
 515                 }
 516                 if (v_scale == 2)
 517                         layer_info->v_zoom = ZOOM_X2;
 518                 else if (v_scale == 4)
 519                         layer_info->v_zoom = ZOOM_X4;
 520                 if (v_exp)
 521                         layer_info->h_exp = V_EXP_6_OVER_5;
 522         } else {
 523                 /* no scaling, only cropping. Set display area to crop area */
 524                 cfg->ysize = expected_ysize;
 525         }
 526         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 527                 "crop display xsize = %d, ysize = %d\n",
 528                 cfg->xsize, cfg->ysize);
 529 }
 530
 531 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
 532                         struct vpbe_layer *layer,
 533                         int top, int left)
 534 {
 535         struct osd_layer_config *cfg = &layer->layer_info.config;
 536         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 537
 538         cfg->xpos = min((unsigned int)left,
 539                         vpbe_dev->current_timings.xres - cfg->xsize);
 540         cfg->ypos = min((unsigned int)top,
 541                         vpbe_dev->current_timings.yres - cfg->ysize);
 542
 543         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 544                 "new xpos = %d, ypos = %d\n",
 545                 cfg->xpos, cfg->ypos);
 546 }
 547
 548 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
 549                         struct v4l2_rect *c)
 550 {
 551         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 552
 553         if ((c->width == 0) ||
 554           ((c->width + c->left) > vpbe_dev->current_timings.xres))
 555                 c->width = vpbe_dev->current_timings.xres - c->left;
 556
 557         if ((c->height == 0) || ((c->height + c->top) >
 558           vpbe_dev->current_timings.yres))
 559                 c->height = vpbe_dev->current_timings.yres - c->top;
 560
 561         /* window height must be even for interlaced display */
 562         if (vpbe_dev->current_timings.interlaced)
 563                 c->height &= (~0x01);
 564
 565 }
 566
 567 /**
 568  * vpbe_try_format()
 569  * If user application provides width and height, and have bytesperline set
 570  * to zero, driver calculates bytesperline and sizeimage based on hardware
 571  * limits.
 572  */
 573 static int vpbe_try_format(struct vpbe_display *disp_dev,
 574                         struct v4l2_pix_format *pixfmt, int check)
 575 {
 576         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 577         int min_height = 1;
 578         int min_width = 32;
 579         int max_height;
 580         int max_width;
 581         int bpp;
 582
 583         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
 584             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
 585                 /* choose default as V4L2_PIX_FMT_UYVY */
 586                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
 587
 588         /* Check the field format */
 589         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
 590                 (pixfmt->field != V4L2_FIELD_NONE)) {
 591                 if (vpbe_dev->current_timings.interlaced)
 592                         pixfmt->field = V4L2_FIELD_INTERLACED;
 593                 else
 594                         pixfmt->field = V4L2_FIELD_NONE;
 595         }
 596
 597         if (pixfmt->field == V4L2_FIELD_INTERLACED)
 598                 min_height = 2;
 599
 600         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 601                 bpp = 1;
 602         else
 603                 bpp = 2;
 604
 605         max_width = vpbe_dev->current_timings.xres;
 606         max_height = vpbe_dev->current_timings.yres;
 607
 608         min_width /= bpp;
 609
 610         if (!pixfmt->width || (pixfmt->width < min_width) ||
 611                 (pixfmt->width > max_width)) {
 612                 pixfmt->width = vpbe_dev->current_timings.xres;
 613         }
 614
 615         if (!pixfmt->height || (pixfmt->height  < min_height) ||
 616                 (pixfmt->height  > max_height)) {
 617                 pixfmt->height = vpbe_dev->current_timings.yres;
 618         }
 619
 620         if (pixfmt->bytesperline < (pixfmt->width * bpp))
 621                 pixfmt->bytesperline = pixfmt->width * bpp;
 622
 623         /* Make the bytesperline 32 byte aligned */
 624         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
 625
 626         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 627                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
 628                                 (pixfmt->bytesperline * pixfmt->height >> 1);
 629         else
 630                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 631
 632         return 0;
 633 }
 634
 635 static int vpbe_display_querycap(struct file *file, void  *priv,
 636                                struct v4l2_capability *cap)
 637 {
 638         struct vpbe_layer *layer = video_drvdata(file);
 639         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 640
 641         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 642         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 643         snprintf(cap->driver, sizeof(cap->driver), "%s",
 644                 dev_name(vpbe_dev->pdev));
 645         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 646                  dev_name(vpbe_dev->pdev));
 647         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
 648
 649         return 0;
 650 }
 651
 652 static int vpbe_display_s_crop(struct file *file, void *priv,
 653                              const struct v4l2_crop *crop)
 654 {
 655         struct vpbe_layer *layer = video_drvdata(file);
 656         struct vpbe_display *disp_dev = layer->disp_dev;
 657         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 658         struct osd_layer_config *cfg = &layer->layer_info.config;
 659         struct osd_state *osd_device = disp_dev->osd_device;
 660         struct v4l2_rect rect = crop->c;
 661         int ret;
 662
 663         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 664                 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
 665
 666         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 667                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 668                 return -EINVAL;
 669         }
 670
 671         if (rect.top < 0)
 672                 rect.top = 0;
 673         if (rect.left < 0)
 674                 rect.left = 0;
 675
 676         vpbe_disp_check_window_params(disp_dev, &rect);
 677
 678         osd_device->ops.get_layer_config(osd_device,
 679                         layer->layer_info.id, cfg);
 680
 681         vpbe_disp_calculate_scale_factor(disp_dev, layer,
 682                                         rect.width,
 683                                         rect.height);
 684         vpbe_disp_adj_position(disp_dev, layer, rect.top,
 685                                         rect.left);
 686         ret = osd_device->ops.set_layer_config(osd_device,
 687                                 layer->layer_info.id, cfg);
 688         if (ret < 0) {
 689                 v4l2_err(&vpbe_dev->v4l2_dev,
 690                         "Error in set layer config:\n");
 691                 return -EINVAL;
 692         }
 693
 694         /* apply zooming and h or v expansion */
 695         osd_device->ops.set_zoom(osd_device,
 696                         layer->layer_info.id,
 697                         layer->layer_info.h_zoom,
 698                         layer->layer_info.v_zoom);
 699         ret = osd_device->ops.set_vid_expansion(osd_device,
 700                         layer->layer_info.h_exp,
 701                         layer->layer_info.v_exp);
 702         if (ret < 0) {
 703                 v4l2_err(&vpbe_dev->v4l2_dev,
 704                 "Error in set vid expansion:\n");
 705                 return -EINVAL;
 706         }
 707
 708         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
 709                 (layer->layer_info.v_zoom != ZOOM_X1) ||
 710                 (layer->layer_info.h_exp != H_EXP_OFF) ||
 711                 (layer->layer_info.v_exp != V_EXP_OFF))
 712                 /* Enable expansion filter */
 713                 osd_device->ops.set_interpolation_filter(osd_device, 1);
 714         else
 715                 osd_device->ops.set_interpolation_filter(osd_device, 0);
 716
 717         return 0;
 718 }
 719
 720 static int vpbe_display_g_crop(struct file *file, void *priv,
 721                              struct v4l2_crop *crop)
 722 {
 723         struct vpbe_layer *layer = video_drvdata(file);
 724         struct osd_layer_config *cfg = &layer->layer_info.config;
 725         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 726         struct osd_state *osd_device = layer->disp_dev->osd_device;
 727         struct v4l2_rect *rect = &crop->c;
 728
 729         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 730                         "VIDIOC_G_CROP, layer id = %d\n",
 731                         layer->device_id);
 732
 733         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 734                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 735                 return -EINVAL;
 736         }
 737         osd_device->ops.get_layer_config(osd_device,
 738                                 layer->layer_info.id, cfg);
 739         rect->top = cfg->ypos;
 740         rect->left = cfg->xpos;
 741         rect->width = cfg->xsize;
 742         rect->height = cfg->ysize;
 743
 744         return 0;
 745 }
 746
 747 static int vpbe_display_cropcap(struct file *file, void *priv,
 748                               struct v4l2_cropcap *cropcap)
 749 {
 750         struct vpbe_layer *layer = video_drvdata(file);
 751         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 752
 753         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
 754
 755         cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 756         cropcap->bounds.left = 0;
 757         cropcap->bounds.top = 0;
 758         cropcap->bounds.width = vpbe_dev->current_timings.xres;
 759         cropcap->bounds.height = vpbe_dev->current_timings.yres;
 760         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
 761         cropcap->defrect = cropcap->bounds;
 762         return 0;
 763 }
 764
 765 static int vpbe_display_g_fmt(struct file *file, void *priv,
 766                                 struct v4l2_format *fmt)
 767 {
 768         struct vpbe_layer *layer = video_drvdata(file);
 769         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 770
 771         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 772                         "VIDIOC_G_FMT, layer id = %d\n",
 773                         layer->device_id);
 774
 775         /* If buffer type is video output */
 776         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 777                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 778                 return -EINVAL;
 779         }
 780         /* Fill in the information about format */
 781         fmt->fmt.pix = layer->pix_fmt;
 782
 783         return 0;
 784 }
 785
 786 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
 787                                    struct v4l2_fmtdesc *fmt)
 788 {
 789         struct vpbe_layer *layer = video_drvdata(file);
 790         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 791         unsigned int index = 0;
 792
 793         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 794                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
 795                                 layer->device_id);
 796         if (fmt->index > 1) {
 797                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
 798                 return -EINVAL;
 799         }
 800
 801         /* Fill in the information about format */
 802         index = fmt->index;
 803         memset(fmt, 0, sizeof(*fmt));
 804         fmt->index = index;
 805         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 806         if (index == 0) {
 807                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
 808                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
 809         } else {
 810                 strcpy(fmt->description, "Y/CbCr 4:2:0");
 811                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
 812         }
 813
 814         return 0;
 815 }
 816
 817 static int vpbe_display_s_fmt(struct file *file, void *priv,
 818                                 struct v4l2_format *fmt)
 819 {
 820         struct vpbe_layer *layer = video_drvdata(file);
 821         struct vpbe_display *disp_dev = layer->disp_dev;
 822         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 823         struct osd_layer_config *cfg  = &layer->layer_info.config;
 824         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 825         struct osd_state *osd_device = disp_dev->osd_device;
 826         int ret;
 827
 828         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 829                         "VIDIOC_S_FMT, layer id = %d\n",
 830                         layer->device_id);
 831
 832         if (vb2_is_busy(&layer->buffer_queue))
 833                 return -EBUSY;
 834
 835         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 836                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
 837                 return -EINVAL;
 838         }
 839         /* Check for valid pixel format */
 840         ret = vpbe_try_format(disp_dev, pixfmt, 1);
 841         if (ret)
 842                 return ret;
 843
 844         /* YUV420 is requested, check availability of the
 845         other video window */
 846
 847         layer->pix_fmt = *pixfmt;
 848         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
 849                 struct vpbe_layer *otherlayer;
 850
 851                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
 852                 /* if other layer is available, only
 853                  * claim it, do not configure it
 854                  */
 855                 ret = osd_device->ops.request_layer(osd_device,
 856                                                     otherlayer->layer_info.id);
 857                 if (ret < 0) {
 858                         v4l2_err(&vpbe_dev->v4l2_dev,
 859                                  "Display Manager failed to allocate layer\n");
 860                         return -EBUSY;
 861                 }
 862         }
 863
 864         /* Get osd layer config */
 865         osd_device->ops.get_layer_config(osd_device,
 866                         layer->layer_info.id, cfg);
 867         /* Store the pixel format in the layer object */
 868         cfg->xsize = pixfmt->width;
 869         cfg->ysize = pixfmt->height;
 870         cfg->line_length = pixfmt->bytesperline;
 871         cfg->ypos = 0;
 872         cfg->xpos = 0;
 873         cfg->interlaced = vpbe_dev->current_timings.interlaced;
 874
 875         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
 876                 cfg->pixfmt = PIXFMT_YCBCRI;
 877
 878         /* Change of the default pixel format for both video windows */
 879         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
 880                 struct vpbe_layer *otherlayer;
 881                 cfg->pixfmt = PIXFMT_NV12;
 882                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
 883                                                                 layer);
 884                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
 885         }
 886
 887         /* Set the layer config in the osd window */
 888         ret = osd_device->ops.set_layer_config(osd_device,
 889                                 layer->layer_info.id, cfg);
 890         if (ret < 0) {
 891                 v4l2_err(&vpbe_dev->v4l2_dev,
 892                                 "Error in S_FMT params:\n");
 893                 return -EINVAL;
 894         }
 895
 896         /* Readback and fill the local copy of current pix format */
 897         osd_device->ops.get_layer_config(osd_device,
 898                         layer->layer_info.id, cfg);
 899
 900         return 0;
 901 }
 902
 903 static int vpbe_display_try_fmt(struct file *file, void *priv,
 904                                   struct v4l2_format *fmt)
 905 {
 906         struct vpbe_layer *layer = video_drvdata(file);
 907         struct vpbe_display *disp_dev = layer->disp_dev;
 908         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 909         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 910
 911         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
 912
 913         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 914                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 915                 return -EINVAL;
 916         }
 917
 918         /* Check for valid field format */
 919         return  vpbe_try_format(disp_dev, pixfmt, 0);
 920
 921 }
 922
 923 /**
 924  * vpbe_display_s_std - Set the given standard in the encoder
 925  *
 926  * Sets the standard if supported by the current encoder. Return the status.
 927  * 0 - success & -EINVAL on error
 928  */
 929 static int vpbe_display_s_std(struct file *file, void *priv,
 930                                 v4l2_std_id std_id)
 931 {
 932         struct vpbe_layer *layer = video_drvdata(file);
 933         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 934         int ret;
 935
 936         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
 937
 938         if (vb2_is_busy(&layer->buffer_queue))
 939                 return -EBUSY;
 940
 941         if (NULL != vpbe_dev->ops.s_std) {
 942                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
 943                 if (ret) {
 944                         v4l2_err(&vpbe_dev->v4l2_dev,
 945                         "Failed to set standard for sub devices\n");
 946                         return -EINVAL;
 947                 }
 948         } else {
 949                 return -EINVAL;
 950         }
 951
 952         return 0;
 953 }
 954
 955 /**
 956  * vpbe_display_g_std - Get the standard in the current encoder
 957  *
 958  * Get the standard in the current encoder. Return the status. 0 - success
 959  * -EINVAL on error
 960  */
 961 static int vpbe_display_g_std(struct file *file, void *priv,
 962                                 v4l2_std_id *std_id)
 963 {
 964         struct vpbe_layer *layer = video_drvdata(file);
 965         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 966
 967         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
 968
 969         /* Get the standard from the current encoder */
 970         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
 971                 *std_id = vpbe_dev->current_timings.std_id;
 972                 return 0;
 973         }
 974
 975         return -EINVAL;
 976 }
 977
 978 /**
 979  * vpbe_display_enum_output - enumerate outputs
 980  *
 981  * Enumerates the outputs available at the vpbe display
 982  * returns the status, -EINVAL if end of output list
 983  */
 984 static int vpbe_display_enum_output(struct file *file, void *priv,
 985                                     struct v4l2_output *output)
 986 {
 987         struct vpbe_layer *layer = video_drvdata(file);
 988         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 989         int ret;
 990
 991         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
 992
 993         /* Enumerate outputs */
 994
 995         if (NULL == vpbe_dev->ops.enum_outputs)
 996                 return -EINVAL;
 997
 998         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
 999         if (ret) {
1000                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1001                         "Failed to enumerate outputs\n");
1002                 return -EINVAL;
1003         }
1004
1005         return 0;
1006 }
1007
1008 /**
1009  * vpbe_display_s_output - Set output to
1010  * the output specified by the index
1011  */
1012 static int vpbe_display_s_output(struct file *file, void *priv,
1013                                 unsigned int i)
1014 {
1015         struct vpbe_layer *layer = video_drvdata(file);
1016         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1017         int ret;
1018
1019         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1020
1021         if (vb2_is_busy(&layer->buffer_queue))
1022                 return -EBUSY;
1023
1024         if (NULL == vpbe_dev->ops.set_output)
1025                 return -EINVAL;
1026
1027         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1028         if (ret) {
1029                 v4l2_err(&vpbe_dev->v4l2_dev,
1030                         "Failed to set output for sub devices\n");
1031                 return -EINVAL;
1032         }
1033
1034         return 0;
1035 }
1036
1037 /**
1038  * vpbe_display_g_output - Get output from subdevice
1039  * for a given by the index
1040  */
1041 static int vpbe_display_g_output(struct file *file, void *priv,
1042                                 unsigned int *i)
1043 {
1044         struct vpbe_layer *layer = video_drvdata(file);
1045         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1046
1047         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1048         /* Get the standard from the current encoder */
1049         *i = vpbe_dev->current_out_index;
1050
1051         return 0;
1052 }
1053
1054 /**
1055  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1056  *
1057  * enum the timings in the current encoder. Return the status. 0 - success
1058  * -EINVAL on error
1059  */
1060 static int
1061 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1062                         struct v4l2_enum_dv_timings *timings)
1063 {
1064         struct vpbe_layer *layer = video_drvdata(file);
1065         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1066         int ret;
1067
1068         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1069
1070         /* Enumerate outputs */
1071         if (NULL == vpbe_dev->ops.enum_dv_timings)
1072                 return -EINVAL;
1073
1074         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1075         if (ret) {
1076                 v4l2_err(&vpbe_dev->v4l2_dev,
1077                         "Failed to enumerate dv timings info\n");
1078                 return -EINVAL;
1079         }
1080
1081         return 0;
1082 }
1083
1084 /**
1085  * vpbe_display_s_dv_timings - Set the dv timings
1086  *
1087  * Set the timings in the current encoder. Return the status. 0 - success
1088  * -EINVAL on error
1089  */
1090 static int
1091 vpbe_display_s_dv_timings(struct file *file, void *priv,
1092                                 struct v4l2_dv_timings *timings)
1093 {
1094         struct vpbe_layer *layer = video_drvdata(file);
1095         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1096         int ret;
1097
1098         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1099
1100         if (vb2_is_busy(&layer->buffer_queue))
1101                 return -EBUSY;
1102
1103         /* Set the given standard in the encoder */
1104         if (!vpbe_dev->ops.s_dv_timings)
1105                 return -EINVAL;
1106
1107         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1108         if (ret) {
1109                 v4l2_err(&vpbe_dev->v4l2_dev,
1110                         "Failed to set the dv timings info\n");
1111                 return -EINVAL;
1112         }
1113
1114         return 0;
1115 }
1116
1117 /**
1118  * vpbe_display_g_dv_timings - Set the dv timings
1119  *
1120  * Get the timings in the current encoder. Return the status. 0 - success
1121  * -EINVAL on error
1122  */
1123 static int
1124 vpbe_display_g_dv_timings(struct file *file, void *priv,
1125                                 struct v4l2_dv_timings *dv_timings)
1126 {
1127         struct vpbe_layer *layer = video_drvdata(file);
1128         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1129
1130         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1131
1132         /* Get the given standard in the encoder */
1133
1134         if (vpbe_dev->current_timings.timings_type &
1135                                 VPBE_ENC_DV_TIMINGS) {
1136                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1137         } else {
1138                 return -EINVAL;
1139         }
1140
1141         return 0;
1142 }
1143
1144 /*
1145  * vpbe_display_open()
1146  * It creates object of file handle structure and stores it in private_data
1147  * member of filepointer
1148  */
1149 static int vpbe_display_open(struct file *file)
1150 {
1151         struct vpbe_layer *layer = video_drvdata(file);
1152         struct vpbe_display *disp_dev = layer->disp_dev;
1153         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1154         struct osd_state *osd_device = disp_dev->osd_device;
1155         int err;
1156
1157         /* creating context for file descriptor */
1158         err = v4l2_fh_open(file);
1159         if (err) {
1160                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1161                 return err;
1162         }
1163
1164         /* leaving if layer is already initialized */
1165         if (!v4l2_fh_is_singular_file(file))
1166                 return err;
1167
1168         if (!layer->usrs) {
1169                 if (mutex_lock_interruptible(&layer->opslock))
1170                         return -ERESTARTSYS;
1171                 /* First claim the layer for this device */
1172                 err = osd_device->ops.request_layer(osd_device,
1173                                                 layer->layer_info.id);
1174                 mutex_unlock(&layer->opslock);
1175                 if (err < 0) {
1176                         /* Couldn't get layer */
1177                         v4l2_err(&vpbe_dev->v4l2_dev,
1178                                 "Display Manager failed to allocate layer\n");
1179                         v4l2_fh_release(file);
1180                         return -EINVAL;
1181                 }
1182         }
1183         /* Increment layer usrs counter */
1184         layer->usrs++;
1185         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1186                         "vpbe display device opened successfully\n");
1187         return 0;
1188 }
1189
1190 /*
1191  * vpbe_display_release()
1192  * This function deletes buffer queue, frees the buffers and the davinci
1193  * display file * handle
1194  */
1195 static int vpbe_display_release(struct file *file)
1196 {
1197         struct vpbe_layer *layer = video_drvdata(file);
1198         struct osd_layer_config *cfg  = &layer->layer_info.config;
1199         struct vpbe_display *disp_dev = layer->disp_dev;
1200         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1201         struct osd_state *osd_device = disp_dev->osd_device;
1202
1203         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1204
1205         mutex_lock(&layer->opslock);
1206
1207         osd_device->ops.disable_layer(osd_device,
1208                         layer->layer_info.id);
1209         /* Decrement layer usrs counter */
1210         layer->usrs--;
1211         /* If this file handle has initialize encoder device, reset it */
1212         if (!layer->usrs) {
1213                 if (cfg->pixfmt == PIXFMT_NV12) {
1214                         struct vpbe_layer *otherlayer;
1215                         otherlayer =
1216                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1217                         osd_device->ops.disable_layer(osd_device,
1218                                         otherlayer->layer_info.id);
1219                         osd_device->ops.release_layer(osd_device,
1220                                         otherlayer->layer_info.id);
1221                 }
1222                 osd_device->ops.disable_layer(osd_device,
1223                                 layer->layer_info.id);
1224                 osd_device->ops.release_layer(osd_device,
1225                                 layer->layer_info.id);
1226         }
1227
1228         _vb2_fop_release(file, NULL);
1229         mutex_unlock(&layer->opslock);
1230
1231         disp_dev->cbcr_ofst = 0;
1232
1233         return 0;
1234 }
1235
1236 /* vpbe capture ioctl operations */
1237 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1238         .vidioc_querycap         = vpbe_display_querycap,
1239         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1240         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1241         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1242         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1243
1244         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1245         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1246         .vidioc_querybuf         = vb2_ioctl_querybuf,
1247         .vidioc_qbuf             = vb2_ioctl_qbuf,
1248         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1249         .vidioc_streamon         = vb2_ioctl_streamon,
1250         .vidioc_streamoff        = vb2_ioctl_streamoff,
1251         .vidioc_expbuf           = vb2_ioctl_expbuf,
1252
1253         .vidioc_cropcap          = vpbe_display_cropcap,
1254         .vidioc_g_crop           = vpbe_display_g_crop,
1255         .vidioc_s_crop           = vpbe_display_s_crop,
1256
1257         .vidioc_s_std            = vpbe_display_s_std,
1258         .vidioc_g_std            = vpbe_display_g_std,
1259
1260         .vidioc_enum_output      = vpbe_display_enum_output,
1261         .vidioc_s_output         = vpbe_display_s_output,
1262         .vidioc_g_output         = vpbe_display_g_output,
1263
1264         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1265         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1266         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1267 };
1268
1269 static struct v4l2_file_operations vpbe_fops = {
1270         .owner = THIS_MODULE,
1271         .open = vpbe_display_open,
1272         .release = vpbe_display_release,
1273         .unlocked_ioctl = video_ioctl2,
1274         .mmap = vb2_fop_mmap,
1275         .poll =  vb2_fop_poll,
1276 };
1277
1278 static int vpbe_device_get(struct device *dev, void *data)
1279 {
1280         struct platform_device *pdev = to_platform_device(dev);
1281         struct vpbe_display *vpbe_disp  = data;
1282
1283         if (strcmp("vpbe_controller", pdev->name) == 0)
1284                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1285
1286         if (strstr(pdev->name, "vpbe-osd") != NULL)
1287                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1288
1289         return 0;
1290 }
1291
1292 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1293                            struct platform_device *pdev)
1294 {
1295         struct vpbe_layer *vpbe_display_layer = NULL;
1296         struct video_device *vbd = NULL;
1297
1298         /* Allocate memory for four plane display objects */
1299
1300         disp_dev->dev[i] =
1301                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1302
1303         /* If memory allocation fails, return error */
1304         if (!disp_dev->dev[i]) {
1305                 printk(KERN_ERR "ran out of memory\n");
1306                 return  -ENOMEM;
1307         }
1308         spin_lock_init(&disp_dev->dev[i]->irqlock);
1309         mutex_init(&disp_dev->dev[i]->opslock);
1310
1311         /* Get the pointer to the layer object */
1312         vpbe_display_layer = disp_dev->dev[i];
1313         vbd = &vpbe_display_layer->video_dev;
1314         /* Initialize field of video device */
1315         vbd->release    = video_device_release_empty;
1316         vbd->fops       = &vpbe_fops;
1317         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1318         vbd->minor      = -1;
1319         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1320         vbd->lock       = &vpbe_display_layer->opslock;
1321         vbd->vfl_dir    = VFL_DIR_TX;
1322
1323         if (disp_dev->vpbe_dev->current_timings.timings_type &
1324                         VPBE_ENC_STD)
1325                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1326
1327         snprintf(vbd->name, sizeof(vbd->name),
1328                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1329                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1330                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1331                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1332
1333         vpbe_display_layer->device_id = i;
1334
1335         vpbe_display_layer->layer_info.id =
1336                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1337
1338
1339         return 0;
1340 }
1341
1342 static int register_device(struct vpbe_layer *vpbe_display_layer,
1343                            struct vpbe_display *disp_dev,
1344                            struct platform_device *pdev)
1345 {
1346         int err;
1347
1348         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1349                   "Trying to register VPBE display device.\n");
1350         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1351                   "layer=%x,layer->video_dev=%x\n",
1352                   (int)vpbe_display_layer,
1353                   (int)&vpbe_display_layer->video_dev);
1354
1355         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1356         err = video_register_device(&vpbe_display_layer->video_dev,
1357                                     VFL_TYPE_GRABBER,
1358                                     -1);
1359         if (err)
1360                 return -ENODEV;
1361
1362         vpbe_display_layer->disp_dev = disp_dev;
1363         /* set the driver data in platform device */
1364         platform_set_drvdata(pdev, disp_dev);
1365         video_set_drvdata(&vpbe_display_layer->video_dev,
1366                           vpbe_display_layer);
1367
1368         return 0;
1369 }
1370
1371
1372
1373 /*
1374  * vpbe_display_probe()
1375  * This function creates device entries by register itself to the V4L2 driver
1376  * and initializes fields of each layer objects
1377  */
1378 static int vpbe_display_probe(struct platform_device *pdev)
1379 {
1380         struct vpbe_display *disp_dev;
1381         struct v4l2_device *v4l2_dev;
1382         struct resource *res = NULL;
1383         struct vb2_queue *q;
1384         int k;
1385         int i;
1386         int err;
1387         int irq;
1388
1389         printk(KERN_DEBUG "vpbe_display_probe\n");
1390         /* Allocate memory for vpbe_display */
1391         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1392                                 GFP_KERNEL);
1393         if (!disp_dev)
1394                 return -ENOMEM;
1395
1396         spin_lock_init(&disp_dev->dma_queue_lock);
1397         /*
1398          * Scan all the platform devices to find the vpbe
1399          * controller device and get the vpbe_dev object
1400          */
1401         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1402                         vpbe_device_get);
1403         if (err < 0)
1404                 return err;
1405
1406         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1407         /* Initialize the vpbe display controller */
1408         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1409                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1410                                                          disp_dev->vpbe_dev);
1411                 if (err) {
1412                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1413                         err = -ENOMEM;
1414                         goto probe_out;
1415                 }
1416         }
1417
1418         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1419                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1420                         err = -ENODEV;
1421                         goto probe_out;
1422                 }
1423         }
1424
1425         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1426         if (!res) {
1427                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1428                 err = -ENODEV;
1429                 goto probe_out;
1430         }
1431
1432         irq = res->start;
1433         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1434                                VPBE_DISPLAY_DRIVER, disp_dev);
1435         if (err) {
1436                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1437                 goto probe_out;
1438         }
1439
1440         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1441                 /* initialize vb2 queue */
1442                 q = &disp_dev->dev[i]->buffer_queue;
1443                 memset(q, 0, sizeof(*q));
1444                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1445                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1446                 q->drv_priv = disp_dev->dev[i];
1447                 q->ops = &video_qops;
1448                 q->mem_ops = &vb2_dma_contig_memops;
1449                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1450                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1451                 q->min_buffers_needed = 1;
1452                 q->lock = &disp_dev->dev[i]->opslock;
1453                 q->dev = disp_dev->vpbe_dev->pdev;
1454                 err = vb2_queue_init(q);
1455                 if (err) {
1456                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1457                         goto probe_out;
1458                 }
1459
1460                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1461
1462                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1463                         err = -ENODEV;
1464                         goto probe_out;
1465                 }
1466         }
1467
1468         v4l2_dbg(1, debug, v4l2_dev,
1469                  "Successfully completed the probing of vpbe v4l2 device\n");
1470
1471         return 0;
1472
1473 probe_out:
1474         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1475                 /* Unregister video device */
1476                 if (disp_dev->dev[k] != NULL) {
1477                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1478                         kfree(disp_dev->dev[k]);
1479                 }
1480         }
1481         return err;
1482 }
1483
1484 /*
1485  * vpbe_display_remove()
1486  * It un-register hardware layer from V4L2 driver
1487  */
1488 static int vpbe_display_remove(struct platform_device *pdev)
1489 {
1490         struct vpbe_layer *vpbe_display_layer;
1491         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1492         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1493         int i;
1494
1495         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1496
1497         /* deinitialize the vpbe display controller */
1498         if (NULL != vpbe_dev->ops.deinitialize)
1499                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1500         /* un-register device */
1501         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1502                 /* Get the pointer to the layer object */
1503                 vpbe_display_layer = disp_dev->dev[i];
1504                 /* Unregister video device */
1505                 video_unregister_device(&vpbe_display_layer->video_dev);
1506
1507         }
1508         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1509                 kfree(disp_dev->dev[i]);
1510                 disp_dev->dev[i] = NULL;
1511         }
1512
1513         return 0;
1514 }
1515
1516 static struct platform_driver vpbe_display_driver = {
1517         .driver = {
1518                 .name = VPBE_DISPLAY_DRIVER,
1519                 .bus = &platform_bus_type,
1520         },
1521         .probe = vpbe_display_probe,
1522         .remove = vpbe_display_remove,
1523 };
1524
1525 module_platform_driver(vpbe_display_driver);
1526
1527 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1528 MODULE_LICENSE("GPL");
1529 MODULE_AUTHOR("Texas Instruments");