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         v4l2_get_timestamp(&layer->cur_frm->vb.timestamp);
  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, const void *parg,
 232                         unsigned int *nbuffers, unsigned int *nplanes,
 233                         unsigned int sizes[], void *alloc_ctxs[])
 234
 235 {
 236         const struct v4l2_format *fmt = parg;
 237         /* Get the file handle object and layer object */
 238         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 239         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 240
 241         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
 242
 243         if (fmt && fmt->fmt.pix.sizeimage < layer->pix_fmt.sizeimage)
 244                 return -EINVAL;
 245
 246         /* Store number of buffers allocated in numbuffer member */
 247         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
 248                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
 249
 250         *nplanes = 1;
 251         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : layer->pix_fmt.sizeimage;
 252         alloc_ctxs[0] = layer->alloc_ctx;
 253
 254         return 0;
 255 }
 256
 257 /*
 258  * vpbe_buffer_queue()
 259  * This function adds the buffer to DMA queue
 260  */
 261 static void vpbe_buffer_queue(struct vb2_buffer *vb)
 262 {
 263         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 264         /* Get the file handle object and layer object */
 265         struct vpbe_disp_buffer *buf = container_of(vbuf,
 266                                 struct vpbe_disp_buffer, vb);
 267         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
 268         struct vpbe_display *disp = layer->disp_dev;
 269         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 270         unsigned long flags;
 271
 272         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 273                         "vpbe_buffer_queue\n");
 274
 275         /* add the buffer to the DMA queue */
 276         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 277         list_add_tail(&buf->list, &layer->dma_queue);
 278         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 279 }
 280
 281 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
 282 {
 283         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 284         struct osd_state *osd_device = layer->disp_dev->osd_device;
 285         int ret;
 286
 287          osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 288
 289         /* Get the next frame from the buffer queue */
 290         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
 291                                 struct vpbe_disp_buffer, list);
 292         /* Remove buffer from the buffer queue */
 293         list_del(&layer->cur_frm->list);
 294         /* Mark state of the current frame to active */
 295         layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
 296         /* Initialize field_id and started member */
 297         layer->field_id = 0;
 298
 299         /* Set parameters in OSD and VENC */
 300         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
 301         if (ret < 0) {
 302                 struct vpbe_disp_buffer *buf, *tmp;
 303
 304                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 305                                 VB2_BUF_STATE_QUEUED);
 306                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
 307                         list_del(&buf->list);
 308                         vb2_buffer_done(&buf->vb.vb2_buf,
 309                                         VB2_BUF_STATE_QUEUED);
 310                 }
 311
 312                 return ret;
 313         }
 314
 315         /*
 316          * if request format is yuv420 semiplanar, need to
 317          * enable both video windows
 318          */
 319         layer->layer_first_int = 1;
 320
 321         return ret;
 322 }
 323
 324 static void vpbe_stop_streaming(struct vb2_queue *vq)
 325 {
 326         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 327         struct osd_state *osd_device = layer->disp_dev->osd_device;
 328         struct vpbe_display *disp = layer->disp_dev;
 329         unsigned long flags;
 330
 331         if (!vb2_is_streaming(vq))
 332                 return;
 333
 334         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 335
 336         /* release all active buffers */
 337         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 338         if (layer->cur_frm == layer->next_frm) {
 339                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 340                                 VB2_BUF_STATE_ERROR);
 341         } else {
 342                 if (layer->cur_frm != NULL)
 343                         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 344                                         VB2_BUF_STATE_ERROR);
 345                 if (layer->next_frm != NULL)
 346                         vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 347                                         VB2_BUF_STATE_ERROR);
 348         }
 349
 350         while (!list_empty(&layer->dma_queue)) {
 351                 layer->next_frm = list_entry(layer->dma_queue.next,
 352                                                 struct vpbe_disp_buffer, list);
 353                 list_del(&layer->next_frm->list);
 354                 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 355                                 VB2_BUF_STATE_ERROR);
 356         }
 357         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 358 }
 359
 360 static struct vb2_ops video_qops = {
 361         .queue_setup = vpbe_buffer_queue_setup,
 362         .wait_prepare = vb2_ops_wait_prepare,
 363         .wait_finish = vb2_ops_wait_finish,
 364         .buf_prepare = vpbe_buffer_prepare,
 365         .start_streaming = vpbe_start_streaming,
 366         .stop_streaming = vpbe_stop_streaming,
 367         .buf_queue = vpbe_buffer_queue,
 368 };
 369
 370 static
 371 struct vpbe_layer*
 372 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
 373                         struct vpbe_layer *layer)
 374 {
 375         enum vpbe_display_device_id thiswin, otherwin;
 376         thiswin = layer->device_id;
 377
 378         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
 379         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
 380         return disp_dev->dev[otherwin];
 381 }
 382
 383 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
 384                         struct vpbe_layer *layer)
 385 {
 386         struct osd_layer_config *cfg  = &layer->layer_info.config;
 387         struct osd_state *osd_device = disp_dev->osd_device;
 388         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 389         unsigned long addr;
 390         int ret;
 391
 392         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
 393         /* Set address in the display registers */
 394         osd_device->ops.start_layer(osd_device,
 395                                     layer->layer_info.id,
 396                                     addr,
 397                                     disp_dev->cbcr_ofst);
 398
 399         ret = osd_device->ops.enable_layer(osd_device,
 400                                 layer->layer_info.id, 0);
 401         if (ret < 0) {
 402                 v4l2_err(&vpbe_dev->v4l2_dev,
 403                         "Error in enabling osd window layer 0\n");
 404                 return -1;
 405         }
 406
 407         /* Enable the window */
 408         layer->layer_info.enable = 1;
 409         if (cfg->pixfmt == PIXFMT_NV12) {
 410                 struct vpbe_layer *otherlayer =
 411                         _vpbe_display_get_other_win_layer(disp_dev, layer);
 412
 413                 ret = osd_device->ops.enable_layer(osd_device,
 414                                 otherlayer->layer_info.id, 1);
 415                 if (ret < 0) {
 416                         v4l2_err(&vpbe_dev->v4l2_dev,
 417                                 "Error in enabling osd window layer 1\n");
 418                         return -1;
 419                 }
 420                 otherlayer->layer_info.enable = 1;
 421         }
 422         return 0;
 423 }
 424
 425 static void
 426 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
 427                         struct vpbe_layer *layer,
 428                         int expected_xsize, int expected_ysize)
 429 {
 430         struct display_layer_info *layer_info = &layer->layer_info;
 431         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
 432         struct osd_layer_config *cfg  = &layer->layer_info.config;
 433         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 434         int calculated_xsize;
 435         int h_exp = 0;
 436         int v_exp = 0;
 437         int h_scale;
 438         int v_scale;
 439
 440         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
 441
 442         /*
 443          * Application initially set the image format. Current display
 444          * size is obtained from the vpbe display controller. expected_xsize
 445          * and expected_ysize are set through S_CROP ioctl. Based on this,
 446          * driver will calculate the scale factors for vertical and
 447          * horizontal direction so that the image is displayed scaled
 448          * and expanded. Application uses expansion to display the image
 449          * in a square pixel. Otherwise it is displayed using displays
 450          * pixel aspect ratio.It is expected that application chooses
 451          * the crop coordinates for cropped or scaled display. if crop
 452          * size is less than the image size, it is displayed cropped or
 453          * it is displayed scaled and/or expanded.
 454          *
 455          * to begin with, set the crop window same as expected. Later we
 456          * will override with scaled window size
 457          */
 458
 459         cfg->xsize = pixfmt->width;
 460         cfg->ysize = pixfmt->height;
 461         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
 462         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
 463         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
 464         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
 465
 466         if (pixfmt->width < expected_xsize) {
 467                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
 468                 if (h_scale < 2)
 469                         h_scale = 1;
 470                 else if (h_scale >= 4)
 471                         h_scale = 4;
 472                 else
 473                         h_scale = 2;
 474                 cfg->xsize *= h_scale;
 475                 if (cfg->xsize < expected_xsize) {
 476                         if ((standard_id & V4L2_STD_525_60) ||
 477                         (standard_id & V4L2_STD_625_50)) {
 478                                 calculated_xsize = (cfg->xsize *
 479                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
 480                                         VPBE_DISPLAY_H_EXP_RATIO_D;
 481                                 if (calculated_xsize <= expected_xsize) {
 482                                         h_exp = 1;
 483                                         cfg->xsize = calculated_xsize;
 484                                 }
 485                         }
 486                 }
 487                 if (h_scale == 2)
 488                         layer_info->h_zoom = ZOOM_X2;
 489                 else if (h_scale == 4)
 490                         layer_info->h_zoom = ZOOM_X4;
 491                 if (h_exp)
 492                         layer_info->h_exp = H_EXP_9_OVER_8;
 493         } else {
 494                 /* no scaling, only cropping. Set display area to crop area */
 495                 cfg->xsize = expected_xsize;
 496         }
 497
 498         if (pixfmt->height < expected_ysize) {
 499                 v_scale = expected_ysize / pixfmt->height;
 500                 if (v_scale < 2)
 501                         v_scale = 1;
 502                 else if (v_scale >= 4)
 503                         v_scale = 4;
 504                 else
 505                         v_scale = 2;
 506                 cfg->ysize *= v_scale;
 507                 if (cfg->ysize < expected_ysize) {
 508                         if ((standard_id & V4L2_STD_625_50)) {
 509                                 calculated_xsize = (cfg->ysize *
 510                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
 511                                         VPBE_DISPLAY_V_EXP_RATIO_D;
 512                                 if (calculated_xsize <= expected_ysize) {
 513                                         v_exp = 1;
 514                                         cfg->ysize = calculated_xsize;
 515                                 }
 516                         }
 517                 }
 518                 if (v_scale == 2)
 519                         layer_info->v_zoom = ZOOM_X2;
 520                 else if (v_scale == 4)
 521                         layer_info->v_zoom = ZOOM_X4;
 522                 if (v_exp)
 523                         layer_info->h_exp = V_EXP_6_OVER_5;
 524         } else {
 525                 /* no scaling, only cropping. Set display area to crop area */
 526                 cfg->ysize = expected_ysize;
 527         }
 528         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 529                 "crop display xsize = %d, ysize = %d\n",
 530                 cfg->xsize, cfg->ysize);
 531 }
 532
 533 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
 534                         struct vpbe_layer *layer,
 535                         int top, int left)
 536 {
 537         struct osd_layer_config *cfg = &layer->layer_info.config;
 538         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 539
 540         cfg->xpos = min((unsigned int)left,
 541                         vpbe_dev->current_timings.xres - cfg->xsize);
 542         cfg->ypos = min((unsigned int)top,
 543                         vpbe_dev->current_timings.yres - cfg->ysize);
 544
 545         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 546                 "new xpos = %d, ypos = %d\n",
 547                 cfg->xpos, cfg->ypos);
 548 }
 549
 550 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
 551                         struct v4l2_rect *c)
 552 {
 553         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 554
 555         if ((c->width == 0) ||
 556           ((c->width + c->left) > vpbe_dev->current_timings.xres))
 557                 c->width = vpbe_dev->current_timings.xres - c->left;
 558
 559         if ((c->height == 0) || ((c->height + c->top) >
 560           vpbe_dev->current_timings.yres))
 561                 c->height = vpbe_dev->current_timings.yres - c->top;
 562
 563         /* window height must be even for interlaced display */
 564         if (vpbe_dev->current_timings.interlaced)
 565                 c->height &= (~0x01);
 566
 567 }
 568
 569 /**
 570  * vpbe_try_format()
 571  * If user application provides width and height, and have bytesperline set
 572  * to zero, driver calculates bytesperline and sizeimage based on hardware
 573  * limits.
 574  */
 575 static int vpbe_try_format(struct vpbe_display *disp_dev,
 576                         struct v4l2_pix_format *pixfmt, int check)
 577 {
 578         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 579         int min_height = 1;
 580         int min_width = 32;
 581         int max_height;
 582         int max_width;
 583         int bpp;
 584
 585         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
 586             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
 587                 /* choose default as V4L2_PIX_FMT_UYVY */
 588                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
 589
 590         /* Check the field format */
 591         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
 592                 (pixfmt->field != V4L2_FIELD_NONE)) {
 593                 if (vpbe_dev->current_timings.interlaced)
 594                         pixfmt->field = V4L2_FIELD_INTERLACED;
 595                 else
 596                         pixfmt->field = V4L2_FIELD_NONE;
 597         }
 598
 599         if (pixfmt->field == V4L2_FIELD_INTERLACED)
 600                 min_height = 2;
 601
 602         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 603                 bpp = 1;
 604         else
 605                 bpp = 2;
 606
 607         max_width = vpbe_dev->current_timings.xres;
 608         max_height = vpbe_dev->current_timings.yres;
 609
 610         min_width /= bpp;
 611
 612         if (!pixfmt->width || (pixfmt->width < min_width) ||
 613                 (pixfmt->width > max_width)) {
 614                 pixfmt->width = vpbe_dev->current_timings.xres;
 615         }
 616
 617         if (!pixfmt->height || (pixfmt->height  < min_height) ||
 618                 (pixfmt->height  > max_height)) {
 619                 pixfmt->height = vpbe_dev->current_timings.yres;
 620         }
 621
 622         if (pixfmt->bytesperline < (pixfmt->width * bpp))
 623                 pixfmt->bytesperline = pixfmt->width * bpp;
 624
 625         /* Make the bytesperline 32 byte aligned */
 626         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
 627
 628         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 629                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
 630                                 (pixfmt->bytesperline * pixfmt->height >> 1);
 631         else
 632                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 633
 634         return 0;
 635 }
 636
 637 static int vpbe_display_querycap(struct file *file, void  *priv,
 638                                struct v4l2_capability *cap)
 639 {
 640         struct vpbe_layer *layer = video_drvdata(file);
 641         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 642
 643         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 644         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 645         snprintf(cap->driver, sizeof(cap->driver), "%s",
 646                 dev_name(vpbe_dev->pdev));
 647         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 648                  dev_name(vpbe_dev->pdev));
 649         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
 650
 651         return 0;
 652 }
 653
 654 static int vpbe_display_s_crop(struct file *file, void *priv,
 655                              const struct v4l2_crop *crop)
 656 {
 657         struct vpbe_layer *layer = video_drvdata(file);
 658         struct vpbe_display *disp_dev = layer->disp_dev;
 659         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 660         struct osd_layer_config *cfg = &layer->layer_info.config;
 661         struct osd_state *osd_device = disp_dev->osd_device;
 662         struct v4l2_rect rect = crop->c;
 663         int ret;
 664
 665         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 666                 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
 667
 668         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 669                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 670                 return -EINVAL;
 671         }
 672
 673         if (rect.top < 0)
 674                 rect.top = 0;
 675         if (rect.left < 0)
 676                 rect.left = 0;
 677
 678         vpbe_disp_check_window_params(disp_dev, &rect);
 679
 680         osd_device->ops.get_layer_config(osd_device,
 681                         layer->layer_info.id, cfg);
 682
 683         vpbe_disp_calculate_scale_factor(disp_dev, layer,
 684                                         rect.width,
 685                                         rect.height);
 686         vpbe_disp_adj_position(disp_dev, layer, rect.top,
 687                                         rect.left);
 688         ret = osd_device->ops.set_layer_config(osd_device,
 689                                 layer->layer_info.id, cfg);
 690         if (ret < 0) {
 691                 v4l2_err(&vpbe_dev->v4l2_dev,
 692                         "Error in set layer config:\n");
 693                 return -EINVAL;
 694         }
 695
 696         /* apply zooming and h or v expansion */
 697         osd_device->ops.set_zoom(osd_device,
 698                         layer->layer_info.id,
 699                         layer->layer_info.h_zoom,
 700                         layer->layer_info.v_zoom);
 701         ret = osd_device->ops.set_vid_expansion(osd_device,
 702                         layer->layer_info.h_exp,
 703                         layer->layer_info.v_exp);
 704         if (ret < 0) {
 705                 v4l2_err(&vpbe_dev->v4l2_dev,
 706                 "Error in set vid expansion:\n");
 707                 return -EINVAL;
 708         }
 709
 710         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
 711                 (layer->layer_info.v_zoom != ZOOM_X1) ||
 712                 (layer->layer_info.h_exp != H_EXP_OFF) ||
 713                 (layer->layer_info.v_exp != V_EXP_OFF))
 714                 /* Enable expansion filter */
 715                 osd_device->ops.set_interpolation_filter(osd_device, 1);
 716         else
 717                 osd_device->ops.set_interpolation_filter(osd_device, 0);
 718
 719         return 0;
 720 }
 721
 722 static int vpbe_display_g_crop(struct file *file, void *priv,
 723                              struct v4l2_crop *crop)
 724 {
 725         struct vpbe_layer *layer = video_drvdata(file);
 726         struct osd_layer_config *cfg = &layer->layer_info.config;
 727         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 728         struct osd_state *osd_device = layer->disp_dev->osd_device;
 729         struct v4l2_rect *rect = &crop->c;
 730
 731         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 732                         "VIDIOC_G_CROP, layer id = %d\n",
 733                         layer->device_id);
 734
 735         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 736                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 737                 return -EINVAL;
 738         }
 739         osd_device->ops.get_layer_config(osd_device,
 740                                 layer->layer_info.id, cfg);
 741         rect->top = cfg->ypos;
 742         rect->left = cfg->xpos;
 743         rect->width = cfg->xsize;
 744         rect->height = cfg->ysize;
 745
 746         return 0;
 747 }
 748
 749 static int vpbe_display_cropcap(struct file *file, void *priv,
 750                               struct v4l2_cropcap *cropcap)
 751 {
 752         struct vpbe_layer *layer = video_drvdata(file);
 753         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 754
 755         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
 756
 757         cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 758         cropcap->bounds.left = 0;
 759         cropcap->bounds.top = 0;
 760         cropcap->bounds.width = vpbe_dev->current_timings.xres;
 761         cropcap->bounds.height = vpbe_dev->current_timings.yres;
 762         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
 763         cropcap->defrect = cropcap->bounds;
 764         return 0;
 765 }
 766
 767 static int vpbe_display_g_fmt(struct file *file, void *priv,
 768                                 struct v4l2_format *fmt)
 769 {
 770         struct vpbe_layer *layer = video_drvdata(file);
 771         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 772
 773         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 774                         "VIDIOC_G_FMT, layer id = %d\n",
 775                         layer->device_id);
 776
 777         /* If buffer type is video output */
 778         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 779                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 780                 return -EINVAL;
 781         }
 782         /* Fill in the information about format */
 783         fmt->fmt.pix = layer->pix_fmt;
 784
 785         return 0;
 786 }
 787
 788 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
 789                                    struct v4l2_fmtdesc *fmt)
 790 {
 791         struct vpbe_layer *layer = video_drvdata(file);
 792         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 793         unsigned int index = 0;
 794
 795         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 796                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
 797                                 layer->device_id);
 798         if (fmt->index > 1) {
 799                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
 800                 return -EINVAL;
 801         }
 802
 803         /* Fill in the information about format */
 804         index = fmt->index;
 805         memset(fmt, 0, sizeof(*fmt));
 806         fmt->index = index;
 807         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 808         if (index == 0) {
 809                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
 810                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
 811         } else {
 812                 strcpy(fmt->description, "Y/CbCr 4:2:0");
 813                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
 814         }
 815
 816         return 0;
 817 }
 818
 819 static int vpbe_display_s_fmt(struct file *file, void *priv,
 820                                 struct v4l2_format *fmt)
 821 {
 822         struct vpbe_layer *layer = video_drvdata(file);
 823         struct vpbe_display *disp_dev = layer->disp_dev;
 824         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 825         struct osd_layer_config *cfg  = &layer->layer_info.config;
 826         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 827         struct osd_state *osd_device = disp_dev->osd_device;
 828         int ret;
 829
 830         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 831                         "VIDIOC_S_FMT, layer id = %d\n",
 832                         layer->device_id);
 833
 834         if (vb2_is_busy(&layer->buffer_queue))
 835                 return -EBUSY;
 836
 837         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 838                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
 839                 return -EINVAL;
 840         }
 841         /* Check for valid pixel format */
 842         ret = vpbe_try_format(disp_dev, pixfmt, 1);
 843         if (ret)
 844                 return ret;
 845
 846         /* YUV420 is requested, check availability of the
 847         other video window */
 848
 849         layer->pix_fmt = *pixfmt;
 850         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
 851                 struct vpbe_layer *otherlayer;
 852
 853                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
 854                 /* if other layer is available, only
 855                  * claim it, do not configure it
 856                  */
 857                 ret = osd_device->ops.request_layer(osd_device,
 858                                                     otherlayer->layer_info.id);
 859                 if (ret < 0) {
 860                         v4l2_err(&vpbe_dev->v4l2_dev,
 861                                  "Display Manager failed to allocate layer\n");
 862                         return -EBUSY;
 863                 }
 864         }
 865
 866         /* Get osd layer config */
 867         osd_device->ops.get_layer_config(osd_device,
 868                         layer->layer_info.id, cfg);
 869         /* Store the pixel format in the layer object */
 870         cfg->xsize = pixfmt->width;
 871         cfg->ysize = pixfmt->height;
 872         cfg->line_length = pixfmt->bytesperline;
 873         cfg->ypos = 0;
 874         cfg->xpos = 0;
 875         cfg->interlaced = vpbe_dev->current_timings.interlaced;
 876
 877         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
 878                 cfg->pixfmt = PIXFMT_YCBCRI;
 879
 880         /* Change of the default pixel format for both video windows */
 881         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
 882                 struct vpbe_layer *otherlayer;
 883                 cfg->pixfmt = PIXFMT_NV12;
 884                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
 885                                                                 layer);
 886                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
 887         }
 888
 889         /* Set the layer config in the osd window */
 890         ret = osd_device->ops.set_layer_config(osd_device,
 891                                 layer->layer_info.id, cfg);
 892         if (ret < 0) {
 893                 v4l2_err(&vpbe_dev->v4l2_dev,
 894                                 "Error in S_FMT params:\n");
 895                 return -EINVAL;
 896         }
 897
 898         /* Readback and fill the local copy of current pix format */
 899         osd_device->ops.get_layer_config(osd_device,
 900                         layer->layer_info.id, cfg);
 901
 902         return 0;
 903 }
 904
 905 static int vpbe_display_try_fmt(struct file *file, void *priv,
 906                                   struct v4l2_format *fmt)
 907 {
 908         struct vpbe_layer *layer = video_drvdata(file);
 909         struct vpbe_display *disp_dev = layer->disp_dev;
 910         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 911         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 912
 913         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
 914
 915         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 916                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 917                 return -EINVAL;
 918         }
 919
 920         /* Check for valid field format */
 921         return  vpbe_try_format(disp_dev, pixfmt, 0);
 922
 923 }
 924
 925 /**
 926  * vpbe_display_s_std - Set the given standard in the encoder
 927  *
 928  * Sets the standard if supported by the current encoder. Return the status.
 929  * 0 - success & -EINVAL on error
 930  */
 931 static int vpbe_display_s_std(struct file *file, void *priv,
 932                                 v4l2_std_id std_id)
 933 {
 934         struct vpbe_layer *layer = video_drvdata(file);
 935         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 936         int ret;
 937
 938         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
 939
 940         if (vb2_is_busy(&layer->buffer_queue))
 941                 return -EBUSY;
 942
 943         if (NULL != vpbe_dev->ops.s_std) {
 944                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
 945                 if (ret) {
 946                         v4l2_err(&vpbe_dev->v4l2_dev,
 947                         "Failed to set standard for sub devices\n");
 948                         return -EINVAL;
 949                 }
 950         } else {
 951                 return -EINVAL;
 952         }
 953
 954         return 0;
 955 }
 956
 957 /**
 958  * vpbe_display_g_std - Get the standard in the current encoder
 959  *
 960  * Get the standard in the current encoder. Return the status. 0 - success
 961  * -EINVAL on error
 962  */
 963 static int vpbe_display_g_std(struct file *file, void *priv,
 964                                 v4l2_std_id *std_id)
 965 {
 966         struct vpbe_layer *layer = video_drvdata(file);
 967         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 968
 969         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
 970
 971         /* Get the standard from the current encoder */
 972         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
 973                 *std_id = vpbe_dev->current_timings.std_id;
 974                 return 0;
 975         }
 976
 977         return -EINVAL;
 978 }
 979
 980 /**
 981  * vpbe_display_enum_output - enumerate outputs
 982  *
 983  * Enumerates the outputs available at the vpbe display
 984  * returns the status, -EINVAL if end of output list
 985  */
 986 static int vpbe_display_enum_output(struct file *file, void *priv,
 987                                     struct v4l2_output *output)
 988 {
 989         struct vpbe_layer *layer = video_drvdata(file);
 990         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 991         int ret;
 992
 993         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
 994
 995         /* Enumerate outputs */
 996
 997         if (NULL == vpbe_dev->ops.enum_outputs)
 998                 return -EINVAL;
 999
1000         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1001         if (ret) {
1002                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1003                         "Failed to enumerate outputs\n");
1004                 return -EINVAL;
1005         }
1006
1007         return 0;
1008 }
1009
1010 /**
1011  * vpbe_display_s_output - Set output to
1012  * the output specified by the index
1013  */
1014 static int vpbe_display_s_output(struct file *file, void *priv,
1015                                 unsigned int i)
1016 {
1017         struct vpbe_layer *layer = video_drvdata(file);
1018         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1019         int ret;
1020
1021         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1022
1023         if (vb2_is_busy(&layer->buffer_queue))
1024                 return -EBUSY;
1025
1026         if (NULL == vpbe_dev->ops.set_output)
1027                 return -EINVAL;
1028
1029         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1030         if (ret) {
1031                 v4l2_err(&vpbe_dev->v4l2_dev,
1032                         "Failed to set output for sub devices\n");
1033                 return -EINVAL;
1034         }
1035
1036         return 0;
1037 }
1038
1039 /**
1040  * vpbe_display_g_output - Get output from subdevice
1041  * for a given by the index
1042  */
1043 static int vpbe_display_g_output(struct file *file, void *priv,
1044                                 unsigned int *i)
1045 {
1046         struct vpbe_layer *layer = video_drvdata(file);
1047         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1048
1049         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1050         /* Get the standard from the current encoder */
1051         *i = vpbe_dev->current_out_index;
1052
1053         return 0;
1054 }
1055
1056 /**
1057  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1058  *
1059  * enum the timings in the current encoder. Return the status. 0 - success
1060  * -EINVAL on error
1061  */
1062 static int
1063 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1064                         struct v4l2_enum_dv_timings *timings)
1065 {
1066         struct vpbe_layer *layer = video_drvdata(file);
1067         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1068         int ret;
1069
1070         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1071
1072         /* Enumerate outputs */
1073         if (NULL == vpbe_dev->ops.enum_dv_timings)
1074                 return -EINVAL;
1075
1076         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1077         if (ret) {
1078                 v4l2_err(&vpbe_dev->v4l2_dev,
1079                         "Failed to enumerate dv timings info\n");
1080                 return -EINVAL;
1081         }
1082
1083         return 0;
1084 }
1085
1086 /**
1087  * vpbe_display_s_dv_timings - Set the dv timings
1088  *
1089  * Set the timings in the current encoder. Return the status. 0 - success
1090  * -EINVAL on error
1091  */
1092 static int
1093 vpbe_display_s_dv_timings(struct file *file, void *priv,
1094                                 struct v4l2_dv_timings *timings)
1095 {
1096         struct vpbe_layer *layer = video_drvdata(file);
1097         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1098         int ret;
1099
1100         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1101
1102         if (vb2_is_busy(&layer->buffer_queue))
1103                 return -EBUSY;
1104
1105         /* Set the given standard in the encoder */
1106         if (!vpbe_dev->ops.s_dv_timings)
1107                 return -EINVAL;
1108
1109         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1110         if (ret) {
1111                 v4l2_err(&vpbe_dev->v4l2_dev,
1112                         "Failed to set the dv timings info\n");
1113                 return -EINVAL;
1114         }
1115
1116         return 0;
1117 }
1118
1119 /**
1120  * vpbe_display_g_dv_timings - Set the dv timings
1121  *
1122  * Get the timings in the current encoder. Return the status. 0 - success
1123  * -EINVAL on error
1124  */
1125 static int
1126 vpbe_display_g_dv_timings(struct file *file, void *priv,
1127                                 struct v4l2_dv_timings *dv_timings)
1128 {
1129         struct vpbe_layer *layer = video_drvdata(file);
1130         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1131
1132         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1133
1134         /* Get the given standard in the encoder */
1135
1136         if (vpbe_dev->current_timings.timings_type &
1137                                 VPBE_ENC_DV_TIMINGS) {
1138                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1139         } else {
1140                 return -EINVAL;
1141         }
1142
1143         return 0;
1144 }
1145
1146 /*
1147  * vpbe_display_open()
1148  * It creates object of file handle structure and stores it in private_data
1149  * member of filepointer
1150  */
1151 static int vpbe_display_open(struct file *file)
1152 {
1153         struct vpbe_layer *layer = video_drvdata(file);
1154         struct vpbe_display *disp_dev = layer->disp_dev;
1155         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1156         struct osd_state *osd_device = disp_dev->osd_device;
1157         int err;
1158
1159         /* creating context for file descriptor */
1160         err = v4l2_fh_open(file);
1161         if (err) {
1162                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1163                 return err;
1164         }
1165
1166         /* leaving if layer is already initialized */
1167         if (!v4l2_fh_is_singular_file(file))
1168                 return err;
1169
1170         if (!layer->usrs) {
1171                 if (mutex_lock_interruptible(&layer->opslock))
1172                         return -ERESTARTSYS;
1173                 /* First claim the layer for this device */
1174                 err = osd_device->ops.request_layer(osd_device,
1175                                                 layer->layer_info.id);
1176                 mutex_unlock(&layer->opslock);
1177                 if (err < 0) {
1178                         /* Couldn't get layer */
1179                         v4l2_err(&vpbe_dev->v4l2_dev,
1180                                 "Display Manager failed to allocate layer\n");
1181                         v4l2_fh_release(file);
1182                         return -EINVAL;
1183                 }
1184         }
1185         /* Increment layer usrs counter */
1186         layer->usrs++;
1187         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1188                         "vpbe display device opened successfully\n");
1189         return 0;
1190 }
1191
1192 /*
1193  * vpbe_display_release()
1194  * This function deletes buffer queue, frees the buffers and the davinci
1195  * display file * handle
1196  */
1197 static int vpbe_display_release(struct file *file)
1198 {
1199         struct vpbe_layer *layer = video_drvdata(file);
1200         struct osd_layer_config *cfg  = &layer->layer_info.config;
1201         struct vpbe_display *disp_dev = layer->disp_dev;
1202         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1203         struct osd_state *osd_device = disp_dev->osd_device;
1204
1205         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1206
1207         mutex_lock(&layer->opslock);
1208
1209         osd_device->ops.disable_layer(osd_device,
1210                         layer->layer_info.id);
1211         /* Decrement layer usrs counter */
1212         layer->usrs--;
1213         /* If this file handle has initialize encoder device, reset it */
1214         if (!layer->usrs) {
1215                 if (cfg->pixfmt == PIXFMT_NV12) {
1216                         struct vpbe_layer *otherlayer;
1217                         otherlayer =
1218                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1219                         osd_device->ops.disable_layer(osd_device,
1220                                         otherlayer->layer_info.id);
1221                         osd_device->ops.release_layer(osd_device,
1222                                         otherlayer->layer_info.id);
1223                 }
1224                 osd_device->ops.disable_layer(osd_device,
1225                                 layer->layer_info.id);
1226                 osd_device->ops.release_layer(osd_device,
1227                                 layer->layer_info.id);
1228         }
1229
1230         _vb2_fop_release(file, NULL);
1231         mutex_unlock(&layer->opslock);
1232
1233         disp_dev->cbcr_ofst = 0;
1234
1235         return 0;
1236 }
1237
1238 /* vpbe capture ioctl operations */
1239 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1240         .vidioc_querycap         = vpbe_display_querycap,
1241         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1242         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1243         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1244         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1245
1246         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1247         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1248         .vidioc_querybuf         = vb2_ioctl_querybuf,
1249         .vidioc_qbuf             = vb2_ioctl_qbuf,
1250         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1251         .vidioc_streamon         = vb2_ioctl_streamon,
1252         .vidioc_streamoff        = vb2_ioctl_streamoff,
1253         .vidioc_expbuf           = vb2_ioctl_expbuf,
1254
1255         .vidioc_cropcap          = vpbe_display_cropcap,
1256         .vidioc_g_crop           = vpbe_display_g_crop,
1257         .vidioc_s_crop           = vpbe_display_s_crop,
1258
1259         .vidioc_s_std            = vpbe_display_s_std,
1260         .vidioc_g_std            = vpbe_display_g_std,
1261
1262         .vidioc_enum_output      = vpbe_display_enum_output,
1263         .vidioc_s_output         = vpbe_display_s_output,
1264         .vidioc_g_output         = vpbe_display_g_output,
1265
1266         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1267         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1268         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1269 };
1270
1271 static struct v4l2_file_operations vpbe_fops = {
1272         .owner = THIS_MODULE,
1273         .open = vpbe_display_open,
1274         .release = vpbe_display_release,
1275         .unlocked_ioctl = video_ioctl2,
1276         .mmap = vb2_fop_mmap,
1277         .poll =  vb2_fop_poll,
1278 };
1279
1280 static int vpbe_device_get(struct device *dev, void *data)
1281 {
1282         struct platform_device *pdev = to_platform_device(dev);
1283         struct vpbe_display *vpbe_disp  = data;
1284
1285         if (strcmp("vpbe_controller", pdev->name) == 0)
1286                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1287
1288         if (strstr(pdev->name, "vpbe-osd") != NULL)
1289                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1290
1291         return 0;
1292 }
1293
1294 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1295                            struct platform_device *pdev)
1296 {
1297         struct vpbe_layer *vpbe_display_layer = NULL;
1298         struct video_device *vbd = NULL;
1299
1300         /* Allocate memory for four plane display objects */
1301
1302         disp_dev->dev[i] =
1303                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1304
1305         /* If memory allocation fails, return error */
1306         if (!disp_dev->dev[i]) {
1307                 printk(KERN_ERR "ran out of memory\n");
1308                 return  -ENOMEM;
1309         }
1310         spin_lock_init(&disp_dev->dev[i]->irqlock);
1311         mutex_init(&disp_dev->dev[i]->opslock);
1312
1313         /* Get the pointer to the layer object */
1314         vpbe_display_layer = disp_dev->dev[i];
1315         vbd = &vpbe_display_layer->video_dev;
1316         /* Initialize field of video device */
1317         vbd->release    = video_device_release_empty;
1318         vbd->fops       = &vpbe_fops;
1319         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1320         vbd->minor      = -1;
1321         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1322         vbd->lock       = &vpbe_display_layer->opslock;
1323         vbd->vfl_dir    = VFL_DIR_TX;
1324
1325         if (disp_dev->vpbe_dev->current_timings.timings_type &
1326                         VPBE_ENC_STD)
1327                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1328
1329         snprintf(vbd->name, sizeof(vbd->name),
1330                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1331                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1332                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1333                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1334
1335         vpbe_display_layer->device_id = i;
1336
1337         vpbe_display_layer->layer_info.id =
1338                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1339
1340
1341         return 0;
1342 }
1343
1344 static int register_device(struct vpbe_layer *vpbe_display_layer,
1345                            struct vpbe_display *disp_dev,
1346                            struct platform_device *pdev)
1347 {
1348         int err;
1349
1350         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1351                   "Trying to register VPBE display device.\n");
1352         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1353                   "layer=%x,layer->video_dev=%x\n",
1354                   (int)vpbe_display_layer,
1355                   (int)&vpbe_display_layer->video_dev);
1356
1357         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1358         err = video_register_device(&vpbe_display_layer->video_dev,
1359                                     VFL_TYPE_GRABBER,
1360                                     -1);
1361         if (err)
1362                 return -ENODEV;
1363
1364         vpbe_display_layer->disp_dev = disp_dev;
1365         /* set the driver data in platform device */
1366         platform_set_drvdata(pdev, disp_dev);
1367         video_set_drvdata(&vpbe_display_layer->video_dev,
1368                           vpbe_display_layer);
1369
1370         return 0;
1371 }
1372
1373
1374
1375 /*
1376  * vpbe_display_probe()
1377  * This function creates device entries by register itself to the V4L2 driver
1378  * and initializes fields of each layer objects
1379  */
1380 static int vpbe_display_probe(struct platform_device *pdev)
1381 {
1382         struct vpbe_display *disp_dev;
1383         struct v4l2_device *v4l2_dev;
1384         struct resource *res = NULL;
1385         struct vb2_queue *q;
1386         int k;
1387         int i;
1388         int err;
1389         int irq;
1390
1391         printk(KERN_DEBUG "vpbe_display_probe\n");
1392         /* Allocate memory for vpbe_display */
1393         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1394                                 GFP_KERNEL);
1395         if (!disp_dev)
1396                 return -ENOMEM;
1397
1398         spin_lock_init(&disp_dev->dma_queue_lock);
1399         /*
1400          * Scan all the platform devices to find the vpbe
1401          * controller device and get the vpbe_dev object
1402          */
1403         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1404                         vpbe_device_get);
1405         if (err < 0)
1406                 return err;
1407
1408         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1409         /* Initialize the vpbe display controller */
1410         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1411                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1412                                                          disp_dev->vpbe_dev);
1413                 if (err) {
1414                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1415                         err = -ENOMEM;
1416                         goto probe_out;
1417                 }
1418         }
1419
1420         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1421                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1422                         err = -ENODEV;
1423                         goto probe_out;
1424                 }
1425         }
1426
1427         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1428         if (!res) {
1429                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1430                 err = -ENODEV;
1431                 goto probe_out;
1432         }
1433
1434         irq = res->start;
1435         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1436                                VPBE_DISPLAY_DRIVER, disp_dev);
1437         if (err) {
1438                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1439                 goto probe_out;
1440         }
1441
1442         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1443                 /* initialize vb2 queue */
1444                 q = &disp_dev->dev[i]->buffer_queue;
1445                 memset(q, 0, sizeof(*q));
1446                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1447                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1448                 q->drv_priv = disp_dev->dev[i];
1449                 q->ops = &video_qops;
1450                 q->mem_ops = &vb2_dma_contig_memops;
1451                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1452                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1453                 q->min_buffers_needed = 1;
1454                 q->lock = &disp_dev->dev[i]->opslock;
1455                 err = vb2_queue_init(q);
1456                 if (err) {
1457                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1458                         goto probe_out;
1459                 }
1460
1461                 disp_dev->dev[i]->alloc_ctx =
1462                         vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev);
1463                 if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) {
1464                         v4l2_err(v4l2_dev, "Failed to get the context\n");
1465                         err = PTR_ERR(disp_dev->dev[i]->alloc_ctx);
1466                         goto probe_out;
1467                 }
1468
1469                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1470
1471                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1472                         err = -ENODEV;
1473                         goto probe_out;
1474                 }
1475         }
1476
1477         v4l2_dbg(1, debug, v4l2_dev,
1478                  "Successfully completed the probing of vpbe v4l2 device\n");
1479
1480         return 0;
1481
1482 probe_out:
1483         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1484                 /* Unregister video device */
1485                 if (disp_dev->dev[k] != NULL) {
1486                         vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx);
1487                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1488                         kfree(disp_dev->dev[k]);
1489                 }
1490         }
1491         return err;
1492 }
1493
1494 /*
1495  * vpbe_display_remove()
1496  * It un-register hardware layer from V4L2 driver
1497  */
1498 static int vpbe_display_remove(struct platform_device *pdev)
1499 {
1500         struct vpbe_layer *vpbe_display_layer;
1501         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1502         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1503         int i;
1504
1505         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1506
1507         /* deinitialize the vpbe display controller */
1508         if (NULL != vpbe_dev->ops.deinitialize)
1509                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1510         /* un-register device */
1511         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1512                 /* Get the pointer to the layer object */
1513                 vpbe_display_layer = disp_dev->dev[i];
1514                 vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx);
1515                 /* Unregister video device */
1516                 video_unregister_device(&vpbe_display_layer->video_dev);
1517
1518         }
1519         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1520                 kfree(disp_dev->dev[i]);
1521                 disp_dev->dev[i] = NULL;
1522         }
1523
1524         return 0;
1525 }
1526
1527 static struct platform_driver vpbe_display_driver = {
1528         .driver = {
1529                 .name = VPBE_DISPLAY_DRIVER,
1530                 .bus = &platform_bus_type,
1531         },
1532         .probe = vpbe_display_probe,
1533         .remove = vpbe_display_remove,
1534 };
1535
1536 module_platform_driver(vpbe_display_driver);
1537
1538 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1539 MODULE_LICENSE("GPL");
1540 MODULE_AUTHOR("Texas Instruments");