drivers/media/platform/davinci/vpbe_display.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   4  */
   5 #include <linux/kernel.h>
   6 #include <linux/init.h>
   7 #include <linux/module.h>
   8 #include <linux/errno.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/string.h>
  11 #include <linux/wait.h>
  12 #include <linux/time.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/irq.h>
  15 #include <linux/mm.h>
  16 #include <linux/mutex.h>
  17 #include <linux/videodev2.h>
  18 #include <linux/slab.h>
  19
  20 #include <asm/pgtable.h>
  21
  22 #ifdef CONFIG_ARCH_DAVINCI
  23 #include <mach/cputype.h>
  24 #endif
  25
  26 #include <media/v4l2-dev.h>
  27 #include <media/v4l2-common.h>
  28 #include <media/v4l2-ioctl.h>
  29 #include <media/v4l2-device.h>
  30 #include <media/davinci/vpbe_display.h>
  31 #include <media/davinci/vpbe_types.h>
  32 #include <media/davinci/vpbe.h>
  33 #include <media/davinci/vpbe_venc.h>
  34 #include <media/davinci/vpbe_osd.h>
  35 #include "vpbe_venc_regs.h"
  36
  37 #define VPBE_DISPLAY_DRIVER "vpbe-v4l2"
  38
  39 static int debug;
  40
  41 #define VPBE_DEFAULT_NUM_BUFS 3
  42
  43 module_param(debug, int, 0644);
  44
  45 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
  46                         struct vpbe_layer *layer);
  47
  48 static int venc_is_second_field(struct vpbe_display *disp_dev)
  49 {
  50         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
  51         int ret, val;
  52
  53         ret = v4l2_subdev_call(vpbe_dev->venc,
  54                                core,
  55                                ioctl,
  56                                VENC_GET_FLD,
  57                                &val);
  58         if (ret < 0) {
  59                 v4l2_err(&vpbe_dev->v4l2_dev,
  60                          "Error in getting Field ID 0\n");
  61                 return 1;
  62         }
  63         return val;
  64 }
  65
  66 static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
  67                                 struct vpbe_layer *layer)
  68 {
  69         if (layer->cur_frm == layer->next_frm)
  70                 return;
  71
  72         layer->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
  73         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
  74         /* Make cur_frm pointing to next_frm */
  75         layer->cur_frm = layer->next_frm;
  76 }
  77
  78 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
  79                                 struct vpbe_layer *layer)
  80 {
  81         struct osd_state *osd_device = disp_obj->osd_device;
  82         unsigned long addr;
  83
  84         spin_lock(&disp_obj->dma_queue_lock);
  85         if (list_empty(&layer->dma_queue) ||
  86                 (layer->cur_frm != layer->next_frm)) {
  87                 spin_unlock(&disp_obj->dma_queue_lock);
  88                 return;
  89         }
  90         /*
  91          * one field is displayed configure
  92          * the next frame if it is available
  93          * otherwise hold on current frame
  94          * Get next from the buffer queue
  95          */
  96         layer->next_frm = list_entry(layer->dma_queue.next,
  97                           struct  vpbe_disp_buffer, list);
  98         /* Remove that from the buffer queue */
  99         list_del(&layer->next_frm->list);
 100         spin_unlock(&disp_obj->dma_queue_lock);
 101         /* Mark state of the frame to active */
 102         layer->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
 103         addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb.vb2_buf, 0);
 104         osd_device->ops.start_layer(osd_device,
 105                         layer->layer_info.id,
 106                         addr,
 107                         disp_obj->cbcr_ofst);
 108 }
 109
 110 /* interrupt service routine */
 111 static irqreturn_t venc_isr(int irq, void *arg)
 112 {
 113         struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
 114         struct vpbe_layer *layer;
 115         static unsigned last_event;
 116         unsigned event = 0;
 117         int fid;
 118         int i;
 119
 120         if (!arg || !disp_dev->dev[0])
 121                 return IRQ_HANDLED;
 122
 123         if (venc_is_second_field(disp_dev))
 124                 event |= VENC_SECOND_FIELD;
 125         else
 126                 event |= VENC_FIRST_FIELD;
 127
 128         if (event == (last_event & ~VENC_END_OF_FRAME)) {
 129                 /*
 130                 * If the display is non-interlaced, then we need to flag the
 131                 * end-of-frame event at every interrupt regardless of the
 132                 * value of the FIDST bit.  We can conclude that the display is
 133                 * non-interlaced if the value of the FIDST bit is unchanged
 134                 * from the previous interrupt.
 135                 */
 136                 event |= VENC_END_OF_FRAME;
 137         } else if (event == VENC_SECOND_FIELD) {
 138                 /* end-of-frame for interlaced display */
 139                 event |= VENC_END_OF_FRAME;
 140         }
 141         last_event = event;
 142
 143         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
 144                 layer = disp_dev->dev[i];
 145
 146                 if (!vb2_start_streaming_called(&layer->buffer_queue))
 147                         continue;
 148
 149                 if (layer->layer_first_int) {
 150                         layer->layer_first_int = 0;
 151                         continue;
 152                 }
 153                 /* Check the field format */
 154                 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
 155                         (event & VENC_END_OF_FRAME)) {
 156                         /* Progressive mode */
 157
 158                         vpbe_isr_even_field(disp_dev, layer);
 159                         vpbe_isr_odd_field(disp_dev, layer);
 160                 } else {
 161                 /* Interlaced mode */
 162
 163                         layer->field_id ^= 1;
 164                         if (event & VENC_FIRST_FIELD)
 165                                 fid = 0;
 166                         else
 167                                 fid = 1;
 168
 169                         /*
 170                         * If field id does not match with store
 171                         * field id
 172                         */
 173                         if (fid != layer->field_id) {
 174                                 /* Make them in sync */
 175                                 layer->field_id = fid;
 176                                 continue;
 177                         }
 178                         /*
 179                         * device field id and local field id are
 180                         * in sync. If this is even field
 181                         */
 182                         if (0 == fid)
 183                                 vpbe_isr_even_field(disp_dev, layer);
 184                         else  /* odd field */
 185                                 vpbe_isr_odd_field(disp_dev, layer);
 186                 }
 187         }
 188
 189         return IRQ_HANDLED;
 190 }
 191
 192 /*
 193  * vpbe_buffer_prepare()
 194  * This is the callback function called from vb2_qbuf() function
 195  * the buffer is prepared and user space virtual address is converted into
 196  * physical address
 197  */
 198 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
 199 {
 200         struct vb2_queue *q = vb->vb2_queue;
 201         struct vpbe_layer *layer = vb2_get_drv_priv(q);
 202         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 203         unsigned long addr;
 204
 205         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 206                                 "vpbe_buffer_prepare\n");
 207
 208         vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
 209         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
 210                 return -EINVAL;
 211
 212         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
 213         if (!IS_ALIGNED(addr, 8)) {
 214                 v4l2_err(&vpbe_dev->v4l2_dev,
 215                          "buffer_prepare:offset is not aligned to 32 bytes\n");
 216                 return -EINVAL;
 217         }
 218         return 0;
 219 }
 220
 221 /*
 222  * vpbe_buffer_setup()
 223  * This function allocates memory for the buffers
 224  */
 225 static int
 226 vpbe_buffer_queue_setup(struct vb2_queue *vq,
 227                         unsigned int *nbuffers, unsigned int *nplanes,
 228                         unsigned int sizes[], struct device *alloc_devs[])
 229
 230 {
 231         /* Get the file handle object and layer object */
 232         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 233         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 234
 235         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
 236
 237         /* Store number of buffers allocated in numbuffer member */
 238         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
 239                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
 240
 241         if (*nplanes)
 242                 return sizes[0] < layer->pix_fmt.sizeimage ? -EINVAL : 0;
 243
 244         *nplanes = 1;
 245         sizes[0] = layer->pix_fmt.sizeimage;
 246
 247         return 0;
 248 }
 249
 250 /*
 251  * vpbe_buffer_queue()
 252  * This function adds the buffer to DMA queue
 253  */
 254 static void vpbe_buffer_queue(struct vb2_buffer *vb)
 255 {
 256         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 257         /* Get the file handle object and layer object */
 258         struct vpbe_disp_buffer *buf = container_of(vbuf,
 259                                 struct vpbe_disp_buffer, vb);
 260         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
 261         struct vpbe_display *disp = layer->disp_dev;
 262         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 263         unsigned long flags;
 264
 265         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 266                         "vpbe_buffer_queue\n");
 267
 268         /* add the buffer to the DMA queue */
 269         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 270         list_add_tail(&buf->list, &layer->dma_queue);
 271         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 272 }
 273
 274 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
 275 {
 276         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 277         struct osd_state *osd_device = layer->disp_dev->osd_device;
 278         int ret;
 279
 280         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 281
 282         /* Get the next frame from the buffer queue */
 283         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
 284                                 struct vpbe_disp_buffer, list);
 285         /* Remove buffer from the buffer queue */
 286         list_del(&layer->cur_frm->list);
 287         /* Mark state of the current frame to active */
 288         layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
 289         /* Initialize field_id and started member */
 290         layer->field_id = 0;
 291
 292         /* Set parameters in OSD and VENC */
 293         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
 294         if (ret < 0) {
 295                 struct vpbe_disp_buffer *buf, *tmp;
 296
 297                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 298                                 VB2_BUF_STATE_QUEUED);
 299                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
 300                         list_del(&buf->list);
 301                         vb2_buffer_done(&buf->vb.vb2_buf,
 302                                         VB2_BUF_STATE_QUEUED);
 303                 }
 304
 305                 return ret;
 306         }
 307
 308         /*
 309          * if request format is yuv420 semiplanar, need to
 310          * enable both video windows
 311          */
 312         layer->layer_first_int = 1;
 313
 314         return ret;
 315 }
 316
 317 static void vpbe_stop_streaming(struct vb2_queue *vq)
 318 {
 319         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 320         struct osd_state *osd_device = layer->disp_dev->osd_device;
 321         struct vpbe_display *disp = layer->disp_dev;
 322         unsigned long flags;
 323
 324         if (!vb2_is_streaming(vq))
 325                 return;
 326
 327         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 328
 329         /* release all active buffers */
 330         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 331         if (layer->cur_frm == layer->next_frm) {
 332                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 333                                 VB2_BUF_STATE_ERROR);
 334         } else {
 335                 if (layer->cur_frm)
 336                         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 337                                         VB2_BUF_STATE_ERROR);
 338                 if (layer->next_frm)
 339                         vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 340                                         VB2_BUF_STATE_ERROR);
 341         }
 342
 343         while (!list_empty(&layer->dma_queue)) {
 344                 layer->next_frm = list_entry(layer->dma_queue.next,
 345                                                 struct vpbe_disp_buffer, list);
 346                 list_del(&layer->next_frm->list);
 347                 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 348                                 VB2_BUF_STATE_ERROR);
 349         }
 350         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 351 }
 352
 353 static const struct vb2_ops video_qops = {
 354         .queue_setup = vpbe_buffer_queue_setup,
 355         .wait_prepare = vb2_ops_wait_prepare,
 356         .wait_finish = vb2_ops_wait_finish,
 357         .buf_prepare = vpbe_buffer_prepare,
 358         .start_streaming = vpbe_start_streaming,
 359         .stop_streaming = vpbe_stop_streaming,
 360         .buf_queue = vpbe_buffer_queue,
 361 };
 362
 363 static
 364 struct vpbe_layer*
 365 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
 366                         struct vpbe_layer *layer)
 367 {
 368         enum vpbe_display_device_id thiswin, otherwin;
 369         thiswin = layer->device_id;
 370
 371         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
 372         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
 373         return disp_dev->dev[otherwin];
 374 }
 375
 376 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
 377                         struct vpbe_layer *layer)
 378 {
 379         struct osd_layer_config *cfg  = &layer->layer_info.config;
 380         struct osd_state *osd_device = disp_dev->osd_device;
 381         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 382         unsigned long addr;
 383         int ret;
 384
 385         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
 386         /* Set address in the display registers */
 387         osd_device->ops.start_layer(osd_device,
 388                                     layer->layer_info.id,
 389                                     addr,
 390                                     disp_dev->cbcr_ofst);
 391
 392         ret = osd_device->ops.enable_layer(osd_device,
 393                                 layer->layer_info.id, 0);
 394         if (ret < 0) {
 395                 v4l2_err(&vpbe_dev->v4l2_dev,
 396                         "Error in enabling osd window layer 0\n");
 397                 return -1;
 398         }
 399
 400         /* Enable the window */
 401         layer->layer_info.enable = 1;
 402         if (cfg->pixfmt == PIXFMT_NV12) {
 403                 struct vpbe_layer *otherlayer =
 404                         _vpbe_display_get_other_win_layer(disp_dev, layer);
 405
 406                 ret = osd_device->ops.enable_layer(osd_device,
 407                                 otherlayer->layer_info.id, 1);
 408                 if (ret < 0) {
 409                         v4l2_err(&vpbe_dev->v4l2_dev,
 410                                 "Error in enabling osd window layer 1\n");
 411                         return -1;
 412                 }
 413                 otherlayer->layer_info.enable = 1;
 414         }
 415         return 0;
 416 }
 417
 418 static void
 419 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
 420                         struct vpbe_layer *layer,
 421                         int expected_xsize, int expected_ysize)
 422 {
 423         struct display_layer_info *layer_info = &layer->layer_info;
 424         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
 425         struct osd_layer_config *cfg  = &layer->layer_info.config;
 426         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 427         int calculated_xsize;
 428         int h_exp = 0;
 429         int v_exp = 0;
 430         int h_scale;
 431         int v_scale;
 432
 433         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
 434
 435         /*
 436          * Application initially set the image format. Current display
 437          * size is obtained from the vpbe display controller. expected_xsize
 438          * and expected_ysize are set through S_SELECTION ioctl. Based on this,
 439          * driver will calculate the scale factors for vertical and
 440          * horizontal direction so that the image is displayed scaled
 441          * and expanded. Application uses expansion to display the image
 442          * in a square pixel. Otherwise it is displayed using displays
 443          * pixel aspect ratio.It is expected that application chooses
 444          * the crop coordinates for cropped or scaled display. if crop
 445          * size is less than the image size, it is displayed cropped or
 446          * it is displayed scaled and/or expanded.
 447          *
 448          * to begin with, set the crop window same as expected. Later we
 449          * will override with scaled window size
 450          */
 451
 452         cfg->xsize = pixfmt->width;
 453         cfg->ysize = pixfmt->height;
 454         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
 455         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
 456         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
 457         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
 458
 459         if (pixfmt->width < expected_xsize) {
 460                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
 461                 if (h_scale < 2)
 462                         h_scale = 1;
 463                 else if (h_scale >= 4)
 464                         h_scale = 4;
 465                 else
 466                         h_scale = 2;
 467                 cfg->xsize *= h_scale;
 468                 if (cfg->xsize < expected_xsize) {
 469                         if ((standard_id & V4L2_STD_525_60) ||
 470                         (standard_id & V4L2_STD_625_50)) {
 471                                 calculated_xsize = (cfg->xsize *
 472                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
 473                                         VPBE_DISPLAY_H_EXP_RATIO_D;
 474                                 if (calculated_xsize <= expected_xsize) {
 475                                         h_exp = 1;
 476                                         cfg->xsize = calculated_xsize;
 477                                 }
 478                         }
 479                 }
 480                 if (h_scale == 2)
 481                         layer_info->h_zoom = ZOOM_X2;
 482                 else if (h_scale == 4)
 483                         layer_info->h_zoom = ZOOM_X4;
 484                 if (h_exp)
 485                         layer_info->h_exp = H_EXP_9_OVER_8;
 486         } else {
 487                 /* no scaling, only cropping. Set display area to crop area */
 488                 cfg->xsize = expected_xsize;
 489         }
 490
 491         if (pixfmt->height < expected_ysize) {
 492                 v_scale = expected_ysize / pixfmt->height;
 493                 if (v_scale < 2)
 494                         v_scale = 1;
 495                 else if (v_scale >= 4)
 496                         v_scale = 4;
 497                 else
 498                         v_scale = 2;
 499                 cfg->ysize *= v_scale;
 500                 if (cfg->ysize < expected_ysize) {
 501                         if ((standard_id & V4L2_STD_625_50)) {
 502                                 calculated_xsize = (cfg->ysize *
 503                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
 504                                         VPBE_DISPLAY_V_EXP_RATIO_D;
 505                                 if (calculated_xsize <= expected_ysize) {
 506                                         v_exp = 1;
 507                                         cfg->ysize = calculated_xsize;
 508                                 }
 509                         }
 510                 }
 511                 if (v_scale == 2)
 512                         layer_info->v_zoom = ZOOM_X2;
 513                 else if (v_scale == 4)
 514                         layer_info->v_zoom = ZOOM_X4;
 515                 if (v_exp)
 516                         layer_info->v_exp = V_EXP_6_OVER_5;
 517         } else {
 518                 /* no scaling, only cropping. Set display area to crop area */
 519                 cfg->ysize = expected_ysize;
 520         }
 521         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 522                 "crop display xsize = %d, ysize = %d\n",
 523                 cfg->xsize, cfg->ysize);
 524 }
 525
 526 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
 527                         struct vpbe_layer *layer,
 528                         int top, int left)
 529 {
 530         struct osd_layer_config *cfg = &layer->layer_info.config;
 531         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 532
 533         cfg->xpos = min((unsigned int)left,
 534                         vpbe_dev->current_timings.xres - cfg->xsize);
 535         cfg->ypos = min((unsigned int)top,
 536                         vpbe_dev->current_timings.yres - cfg->ysize);
 537
 538         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 539                 "new xpos = %d, ypos = %d\n",
 540                 cfg->xpos, cfg->ypos);
 541 }
 542
 543 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
 544                         struct v4l2_rect *c)
 545 {
 546         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 547
 548         if ((c->width == 0) ||
 549           ((c->width + c->left) > vpbe_dev->current_timings.xres))
 550                 c->width = vpbe_dev->current_timings.xres - c->left;
 551
 552         if ((c->height == 0) || ((c->height + c->top) >
 553           vpbe_dev->current_timings.yres))
 554                 c->height = vpbe_dev->current_timings.yres - c->top;
 555
 556         /* window height must be even for interlaced display */
 557         if (vpbe_dev->current_timings.interlaced)
 558                 c->height &= (~0x01);
 559
 560 }
 561
 562 /*
 563  * vpbe_try_format()
 564  * If user application provides width and height, and have bytesperline set
 565  * to zero, driver calculates bytesperline and sizeimage based on hardware
 566  * limits.
 567  */
 568 static int vpbe_try_format(struct vpbe_display *disp_dev,
 569                         struct v4l2_pix_format *pixfmt, int check)
 570 {
 571         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 572         int min_height = 1;
 573         int min_width = 32;
 574         int max_height;
 575         int max_width;
 576         int bpp;
 577
 578         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
 579             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
 580                 /* choose default as V4L2_PIX_FMT_UYVY */
 581                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
 582
 583         /* Check the field format */
 584         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
 585                 (pixfmt->field != V4L2_FIELD_NONE)) {
 586                 if (vpbe_dev->current_timings.interlaced)
 587                         pixfmt->field = V4L2_FIELD_INTERLACED;
 588                 else
 589                         pixfmt->field = V4L2_FIELD_NONE;
 590         }
 591
 592         if (pixfmt->field == V4L2_FIELD_INTERLACED)
 593                 min_height = 2;
 594
 595         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 596                 bpp = 1;
 597         else
 598                 bpp = 2;
 599
 600         max_width = vpbe_dev->current_timings.xres;
 601         max_height = vpbe_dev->current_timings.yres;
 602
 603         min_width /= bpp;
 604
 605         if (!pixfmt->width || (pixfmt->width < min_width) ||
 606                 (pixfmt->width > max_width)) {
 607                 pixfmt->width = vpbe_dev->current_timings.xres;
 608         }
 609
 610         if (!pixfmt->height || (pixfmt->height  < min_height) ||
 611                 (pixfmt->height  > max_height)) {
 612                 pixfmt->height = vpbe_dev->current_timings.yres;
 613         }
 614
 615         if (pixfmt->bytesperline < (pixfmt->width * bpp))
 616                 pixfmt->bytesperline = pixfmt->width * bpp;
 617
 618         /* Make the bytesperline 32 byte aligned */
 619         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
 620
 621         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 622                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
 623                                 (pixfmt->bytesperline * pixfmt->height >> 1);
 624         else
 625                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 626
 627         return 0;
 628 }
 629
 630 static int vpbe_display_querycap(struct file *file, void  *priv,
 631                                struct v4l2_capability *cap)
 632 {
 633         struct vpbe_layer *layer = video_drvdata(file);
 634         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 635
 636         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 637         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 638         snprintf(cap->driver, sizeof(cap->driver), "%s",
 639                 dev_name(vpbe_dev->pdev));
 640         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 641                  dev_name(vpbe_dev->pdev));
 642         strscpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
 643
 644         return 0;
 645 }
 646
 647 static int vpbe_display_s_selection(struct file *file, void *priv,
 648                              struct v4l2_selection *sel)
 649 {
 650         struct vpbe_layer *layer = video_drvdata(file);
 651         struct vpbe_display *disp_dev = layer->disp_dev;
 652         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 653         struct osd_layer_config *cfg = &layer->layer_info.config;
 654         struct osd_state *osd_device = disp_dev->osd_device;
 655         struct v4l2_rect rect = sel->r;
 656         int ret;
 657
 658         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 659                 "VIDIOC_S_SELECTION, layer id = %d\n", layer->device_id);
 660
 661         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
 662             sel->target != V4L2_SEL_TGT_CROP)
 663                 return -EINVAL;
 664
 665         if (rect.top < 0)
 666                 rect.top = 0;
 667         if (rect.left < 0)
 668                 rect.left = 0;
 669
 670         vpbe_disp_check_window_params(disp_dev, &rect);
 671
 672         osd_device->ops.get_layer_config(osd_device,
 673                         layer->layer_info.id, cfg);
 674
 675         vpbe_disp_calculate_scale_factor(disp_dev, layer,
 676                                         rect.width,
 677                                         rect.height);
 678         vpbe_disp_adj_position(disp_dev, layer, rect.top,
 679                                         rect.left);
 680         ret = osd_device->ops.set_layer_config(osd_device,
 681                                 layer->layer_info.id, cfg);
 682         if (ret < 0) {
 683                 v4l2_err(&vpbe_dev->v4l2_dev,
 684                         "Error in set layer config:\n");
 685                 return -EINVAL;
 686         }
 687
 688         /* apply zooming and h or v expansion */
 689         osd_device->ops.set_zoom(osd_device,
 690                         layer->layer_info.id,
 691                         layer->layer_info.h_zoom,
 692                         layer->layer_info.v_zoom);
 693         ret = osd_device->ops.set_vid_expansion(osd_device,
 694                         layer->layer_info.h_exp,
 695                         layer->layer_info.v_exp);
 696         if (ret < 0) {
 697                 v4l2_err(&vpbe_dev->v4l2_dev,
 698                 "Error in set vid expansion:\n");
 699                 return -EINVAL;
 700         }
 701
 702         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
 703                 (layer->layer_info.v_zoom != ZOOM_X1) ||
 704                 (layer->layer_info.h_exp != H_EXP_OFF) ||
 705                 (layer->layer_info.v_exp != V_EXP_OFF))
 706                 /* Enable expansion filter */
 707                 osd_device->ops.set_interpolation_filter(osd_device, 1);
 708         else
 709                 osd_device->ops.set_interpolation_filter(osd_device, 0);
 710
 711         sel->r = rect;
 712         return 0;
 713 }
 714
 715 static int vpbe_display_g_selection(struct file *file, void *priv,
 716                                     struct v4l2_selection *sel)
 717 {
 718         struct vpbe_layer *layer = video_drvdata(file);
 719         struct osd_layer_config *cfg = &layer->layer_info.config;
 720         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 721         struct osd_state *osd_device = layer->disp_dev->osd_device;
 722         struct v4l2_rect *rect = &sel->r;
 723
 724         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 725                         "VIDIOC_G_SELECTION, layer id = %d\n",
 726                         layer->device_id);
 727
 728         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 729                 return -EINVAL;
 730
 731         switch (sel->target) {
 732         case V4L2_SEL_TGT_CROP:
 733                 osd_device->ops.get_layer_config(osd_device,
 734                                                  layer->layer_info.id, cfg);
 735                 rect->top = cfg->ypos;
 736                 rect->left = cfg->xpos;
 737                 rect->width = cfg->xsize;
 738                 rect->height = cfg->ysize;
 739                 break;
 740         case V4L2_SEL_TGT_CROP_DEFAULT:
 741         case V4L2_SEL_TGT_CROP_BOUNDS:
 742                 rect->left = 0;
 743                 rect->top = 0;
 744                 rect->width = vpbe_dev->current_timings.xres;
 745                 rect->height = vpbe_dev->current_timings.yres;
 746                 break;
 747         default:
 748                 return -EINVAL;
 749         }
 750
 751         return 0;
 752 }
 753
 754 static int vpbe_display_g_pixelaspect(struct file *file, void *priv,
 755                                       int type, struct v4l2_fract *f)
 756 {
 757         struct vpbe_layer *layer = video_drvdata(file);
 758         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 759
 760         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
 761
 762         if (type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 763                 return -EINVAL;
 764
 765         *f = vpbe_dev->current_timings.aspect;
 766         return 0;
 767 }
 768
 769 static int vpbe_display_g_fmt(struct file *file, void *priv,
 770                                 struct v4l2_format *fmt)
 771 {
 772         struct vpbe_layer *layer = video_drvdata(file);
 773         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 774
 775         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 776                         "VIDIOC_G_FMT, layer id = %d\n",
 777                         layer->device_id);
 778
 779         /* If buffer type is video output */
 780         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 781                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 782                 return -EINVAL;
 783         }
 784         /* Fill in the information about format */
 785         fmt->fmt.pix = layer->pix_fmt;
 786
 787         return 0;
 788 }
 789
 790 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
 791                                    struct v4l2_fmtdesc *fmt)
 792 {
 793         struct vpbe_layer *layer = video_drvdata(file);
 794         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 795         unsigned int index = 0;
 796
 797         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 798                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
 799                                 layer->device_id);
 800         if (fmt->index > 1) {
 801                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
 802                 return -EINVAL;
 803         }
 804
 805         /* Fill in the information about format */
 806         index = fmt->index;
 807         memset(fmt, 0, sizeof(*fmt));
 808         fmt->index = index;
 809         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 810         if (index == 0) {
 811                 strscpy(fmt->description, "YUV 4:2:2 - UYVY",
 812                         sizeof(fmt->description));
 813                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
 814         } else {
 815                 strscpy(fmt->description, "Y/CbCr 4:2:0",
 816                         sizeof(fmt->description));
 817                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
 818         }
 819
 820         return 0;
 821 }
 822
 823 static int vpbe_display_s_fmt(struct file *file, void *priv,
 824                                 struct v4l2_format *fmt)
 825 {
 826         struct vpbe_layer *layer = video_drvdata(file);
 827         struct vpbe_display *disp_dev = layer->disp_dev;
 828         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 829         struct osd_layer_config *cfg  = &layer->layer_info.config;
 830         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 831         struct osd_state *osd_device = disp_dev->osd_device;
 832         int ret;
 833
 834         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 835                         "VIDIOC_S_FMT, layer id = %d\n",
 836                         layer->device_id);
 837
 838         if (vb2_is_busy(&layer->buffer_queue))
 839                 return -EBUSY;
 840
 841         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 842                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
 843                 return -EINVAL;
 844         }
 845         /* Check for valid pixel format */
 846         ret = vpbe_try_format(disp_dev, pixfmt, 1);
 847         if (ret)
 848                 return ret;
 849
 850         /* YUV420 is requested, check availability of the
 851         other video window */
 852
 853         layer->pix_fmt = *pixfmt;
 854         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
 855                 struct vpbe_layer *otherlayer;
 856
 857                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
 858                 /* if other layer is available, only
 859                  * claim it, do not configure it
 860                  */
 861                 ret = osd_device->ops.request_layer(osd_device,
 862                                                     otherlayer->layer_info.id);
 863                 if (ret < 0) {
 864                         v4l2_err(&vpbe_dev->v4l2_dev,
 865                                  "Display Manager failed to allocate layer\n");
 866                         return -EBUSY;
 867                 }
 868         }
 869
 870         /* Get osd layer config */
 871         osd_device->ops.get_layer_config(osd_device,
 872                         layer->layer_info.id, cfg);
 873         /* Store the pixel format in the layer object */
 874         cfg->xsize = pixfmt->width;
 875         cfg->ysize = pixfmt->height;
 876         cfg->line_length = pixfmt->bytesperline;
 877         cfg->ypos = 0;
 878         cfg->xpos = 0;
 879         cfg->interlaced = vpbe_dev->current_timings.interlaced;
 880
 881         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
 882                 cfg->pixfmt = PIXFMT_YCBCRI;
 883
 884         /* Change of the default pixel format for both video windows */
 885         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
 886                 struct vpbe_layer *otherlayer;
 887                 cfg->pixfmt = PIXFMT_NV12;
 888                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
 889                                                                 layer);
 890                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
 891         }
 892
 893         /* Set the layer config in the osd window */
 894         ret = osd_device->ops.set_layer_config(osd_device,
 895                                 layer->layer_info.id, cfg);
 896         if (ret < 0) {
 897                 v4l2_err(&vpbe_dev->v4l2_dev,
 898                                 "Error in S_FMT params:\n");
 899                 return -EINVAL;
 900         }
 901
 902         /* Readback and fill the local copy of current pix format */
 903         osd_device->ops.get_layer_config(osd_device,
 904                         layer->layer_info.id, cfg);
 905
 906         return 0;
 907 }
 908
 909 static int vpbe_display_try_fmt(struct file *file, void *priv,
 910                                   struct v4l2_format *fmt)
 911 {
 912         struct vpbe_layer *layer = video_drvdata(file);
 913         struct vpbe_display *disp_dev = layer->disp_dev;
 914         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 915         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 916
 917         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
 918
 919         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 920                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 921                 return -EINVAL;
 922         }
 923
 924         /* Check for valid field format */
 925         return  vpbe_try_format(disp_dev, pixfmt, 0);
 926
 927 }
 928
 929 /*
 930  * vpbe_display_s_std - Set the given standard in the encoder
 931  *
 932  * Sets the standard if supported by the current encoder. Return the status.
 933  * 0 - success & -EINVAL on error
 934  */
 935 static int vpbe_display_s_std(struct file *file, void *priv,
 936                                 v4l2_std_id std_id)
 937 {
 938         struct vpbe_layer *layer = video_drvdata(file);
 939         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 940         int ret;
 941
 942         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
 943
 944         if (vb2_is_busy(&layer->buffer_queue))
 945                 return -EBUSY;
 946
 947         if (vpbe_dev->ops.s_std) {
 948                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
 949                 if (ret) {
 950                         v4l2_err(&vpbe_dev->v4l2_dev,
 951                         "Failed to set standard for sub devices\n");
 952                         return -EINVAL;
 953                 }
 954         } else {
 955                 return -EINVAL;
 956         }
 957
 958         return 0;
 959 }
 960
 961 /*
 962  * vpbe_display_g_std - Get the standard in the current encoder
 963  *
 964  * Get the standard in the current encoder. Return the status. 0 - success
 965  * -EINVAL on error
 966  */
 967 static int vpbe_display_g_std(struct file *file, void *priv,
 968                                 v4l2_std_id *std_id)
 969 {
 970         struct vpbe_layer *layer = video_drvdata(file);
 971         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 972
 973         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
 974
 975         /* Get the standard from the current encoder */
 976         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
 977                 *std_id = vpbe_dev->current_timings.std_id;
 978                 return 0;
 979         }
 980
 981         return -EINVAL;
 982 }
 983
 984 /*
 985  * vpbe_display_enum_output - enumerate outputs
 986  *
 987  * Enumerates the outputs available at the vpbe display
 988  * returns the status, -EINVAL if end of output list
 989  */
 990 static int vpbe_display_enum_output(struct file *file, void *priv,
 991                                     struct v4l2_output *output)
 992 {
 993         struct vpbe_layer *layer = video_drvdata(file);
 994         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 995         int ret;
 996
 997         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
 998
 999         /* Enumerate outputs */
1000         if (!vpbe_dev->ops.enum_outputs)
1001                 return -EINVAL;
1002
1003         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1004         if (ret) {
1005                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1006                         "Failed to enumerate outputs\n");
1007                 return -EINVAL;
1008         }
1009
1010         return 0;
1011 }
1012
1013 /*
1014  * vpbe_display_s_output - Set output to
1015  * the output specified by the index
1016  */
1017 static int vpbe_display_s_output(struct file *file, void *priv,
1018                                 unsigned int i)
1019 {
1020         struct vpbe_layer *layer = video_drvdata(file);
1021         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1022         int ret;
1023
1024         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1025
1026         if (vb2_is_busy(&layer->buffer_queue))
1027                 return -EBUSY;
1028
1029         if (!vpbe_dev->ops.set_output)
1030                 return -EINVAL;
1031
1032         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1033         if (ret) {
1034                 v4l2_err(&vpbe_dev->v4l2_dev,
1035                         "Failed to set output for sub devices\n");
1036                 return -EINVAL;
1037         }
1038
1039         return 0;
1040 }
1041
1042 /*
1043  * vpbe_display_g_output - Get output from subdevice
1044  * for a given by the index
1045  */
1046 static int vpbe_display_g_output(struct file *file, void *priv,
1047                                 unsigned int *i)
1048 {
1049         struct vpbe_layer *layer = video_drvdata(file);
1050         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1051
1052         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1053         /* Get the standard from the current encoder */
1054         *i = vpbe_dev->current_out_index;
1055
1056         return 0;
1057 }
1058
1059 /*
1060  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1061  *
1062  * enum the timings in the current encoder. Return the status. 0 - success
1063  * -EINVAL on error
1064  */
1065 static int
1066 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1067                         struct v4l2_enum_dv_timings *timings)
1068 {
1069         struct vpbe_layer *layer = video_drvdata(file);
1070         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1071         int ret;
1072
1073         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1074
1075         /* Enumerate outputs */
1076         if (!vpbe_dev->ops.enum_dv_timings)
1077                 return -EINVAL;
1078
1079         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1080         if (ret) {
1081                 v4l2_err(&vpbe_dev->v4l2_dev,
1082                         "Failed to enumerate dv timings info\n");
1083                 return -EINVAL;
1084         }
1085
1086         return 0;
1087 }
1088
1089 /*
1090  * vpbe_display_s_dv_timings - Set the dv timings
1091  *
1092  * Set the timings in the current encoder. Return the status. 0 - success
1093  * -EINVAL on error
1094  */
1095 static int
1096 vpbe_display_s_dv_timings(struct file *file, void *priv,
1097                                 struct v4l2_dv_timings *timings)
1098 {
1099         struct vpbe_layer *layer = video_drvdata(file);
1100         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1101         int ret;
1102
1103         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1104
1105         if (vb2_is_busy(&layer->buffer_queue))
1106                 return -EBUSY;
1107
1108         /* Set the given standard in the encoder */
1109         if (!vpbe_dev->ops.s_dv_timings)
1110                 return -EINVAL;
1111
1112         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1113         if (ret) {
1114                 v4l2_err(&vpbe_dev->v4l2_dev,
1115                         "Failed to set the dv timings info\n");
1116                 return -EINVAL;
1117         }
1118
1119         return 0;
1120 }
1121
1122 /*
1123  * vpbe_display_g_dv_timings - Set the dv timings
1124  *
1125  * Get the timings in the current encoder. Return the status. 0 - success
1126  * -EINVAL on error
1127  */
1128 static int
1129 vpbe_display_g_dv_timings(struct file *file, void *priv,
1130                                 struct v4l2_dv_timings *dv_timings)
1131 {
1132         struct vpbe_layer *layer = video_drvdata(file);
1133         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1134
1135         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1136
1137         /* Get the given standard in the encoder */
1138
1139         if (vpbe_dev->current_timings.timings_type &
1140                                 VPBE_ENC_DV_TIMINGS) {
1141                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1142         } else {
1143                 return -EINVAL;
1144         }
1145
1146         return 0;
1147 }
1148
1149 /*
1150  * vpbe_display_open()
1151  * It creates object of file handle structure and stores it in private_data
1152  * member of filepointer
1153  */
1154 static int vpbe_display_open(struct file *file)
1155 {
1156         struct vpbe_layer *layer = video_drvdata(file);
1157         struct vpbe_display *disp_dev = layer->disp_dev;
1158         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1159         struct osd_state *osd_device = disp_dev->osd_device;
1160         int err;
1161
1162         /* creating context for file descriptor */
1163         err = v4l2_fh_open(file);
1164         if (err) {
1165                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1166                 return err;
1167         }
1168
1169         /* leaving if layer is already initialized */
1170         if (!v4l2_fh_is_singular_file(file))
1171                 return err;
1172
1173         if (!layer->usrs) {
1174                 if (mutex_lock_interruptible(&layer->opslock))
1175                         return -ERESTARTSYS;
1176                 /* First claim the layer for this device */
1177                 err = osd_device->ops.request_layer(osd_device,
1178                                                 layer->layer_info.id);
1179                 mutex_unlock(&layer->opslock);
1180                 if (err < 0) {
1181                         /* Couldn't get layer */
1182                         v4l2_err(&vpbe_dev->v4l2_dev,
1183                                 "Display Manager failed to allocate layer\n");
1184                         v4l2_fh_release(file);
1185                         return -EINVAL;
1186                 }
1187         }
1188         /* Increment layer usrs counter */
1189         layer->usrs++;
1190         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1191                         "vpbe display device opened successfully\n");
1192         return 0;
1193 }
1194
1195 /*
1196  * vpbe_display_release()
1197  * This function deletes buffer queue, frees the buffers and the davinci
1198  * display file * handle
1199  */
1200 static int vpbe_display_release(struct file *file)
1201 {
1202         struct vpbe_layer *layer = video_drvdata(file);
1203         struct osd_layer_config *cfg  = &layer->layer_info.config;
1204         struct vpbe_display *disp_dev = layer->disp_dev;
1205         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1206         struct osd_state *osd_device = disp_dev->osd_device;
1207
1208         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1209
1210         mutex_lock(&layer->opslock);
1211
1212         osd_device->ops.disable_layer(osd_device,
1213                         layer->layer_info.id);
1214         /* Decrement layer usrs counter */
1215         layer->usrs--;
1216         /* If this file handle has initialize encoder device, reset it */
1217         if (!layer->usrs) {
1218                 if (cfg->pixfmt == PIXFMT_NV12) {
1219                         struct vpbe_layer *otherlayer;
1220                         otherlayer =
1221                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1222                         osd_device->ops.disable_layer(osd_device,
1223                                         otherlayer->layer_info.id);
1224                         osd_device->ops.release_layer(osd_device,
1225                                         otherlayer->layer_info.id);
1226                 }
1227                 osd_device->ops.disable_layer(osd_device,
1228                                 layer->layer_info.id);
1229                 osd_device->ops.release_layer(osd_device,
1230                                 layer->layer_info.id);
1231         }
1232
1233         _vb2_fop_release(file, NULL);
1234         mutex_unlock(&layer->opslock);
1235
1236         disp_dev->cbcr_ofst = 0;
1237
1238         return 0;
1239 }
1240
1241 /* vpbe capture ioctl operations */
1242 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1243         .vidioc_querycap         = vpbe_display_querycap,
1244         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1245         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1246         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1247         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1248
1249         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1250         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1251         .vidioc_querybuf         = vb2_ioctl_querybuf,
1252         .vidioc_qbuf             = vb2_ioctl_qbuf,
1253         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1254         .vidioc_streamon         = vb2_ioctl_streamon,
1255         .vidioc_streamoff        = vb2_ioctl_streamoff,
1256         .vidioc_expbuf           = vb2_ioctl_expbuf,
1257
1258         .vidioc_g_pixelaspect    = vpbe_display_g_pixelaspect,
1259         .vidioc_g_selection      = vpbe_display_g_selection,
1260         .vidioc_s_selection      = vpbe_display_s_selection,
1261
1262         .vidioc_s_std            = vpbe_display_s_std,
1263         .vidioc_g_std            = vpbe_display_g_std,
1264
1265         .vidioc_enum_output      = vpbe_display_enum_output,
1266         .vidioc_s_output         = vpbe_display_s_output,
1267         .vidioc_g_output         = vpbe_display_g_output,
1268
1269         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1270         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1271         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1272 };
1273
1274 static const struct v4l2_file_operations vpbe_fops = {
1275         .owner = THIS_MODULE,
1276         .open = vpbe_display_open,
1277         .release = vpbe_display_release,
1278         .unlocked_ioctl = video_ioctl2,
1279         .mmap = vb2_fop_mmap,
1280         .poll =  vb2_fop_poll,
1281 };
1282
1283 static int vpbe_device_get(struct device *dev, void *data)
1284 {
1285         struct platform_device *pdev = to_platform_device(dev);
1286         struct vpbe_display *vpbe_disp  = data;
1287
1288         if (strcmp("vpbe_controller", pdev->name) == 0)
1289                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1290
1291         if (strstr(pdev->name, "vpbe-osd"))
1292                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1293
1294         return 0;
1295 }
1296
1297 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1298                            struct platform_device *pdev)
1299 {
1300         struct vpbe_layer *vpbe_display_layer = NULL;
1301         struct video_device *vbd = NULL;
1302
1303         /* Allocate memory for four plane display objects */
1304         disp_dev->dev[i] = kzalloc(sizeof(*disp_dev->dev[i]), GFP_KERNEL);
1305         if (!disp_dev->dev[i])
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=%p,layer->video_dev=%p\n",
1352                   vpbe_display_layer,
1353                   &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(*disp_dev), GFP_KERNEL);
1392         if (!disp_dev)
1393                 return -ENOMEM;
1394
1395         spin_lock_init(&disp_dev->dma_queue_lock);
1396         /*
1397          * Scan all the platform devices to find the vpbe
1398          * controller device and get the vpbe_dev object
1399          */
1400         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1401                         vpbe_device_get);
1402         if (err < 0)
1403                 return err;
1404
1405         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1406         /* Initialize the vpbe display controller */
1407         if (disp_dev->vpbe_dev->ops.initialize) {
1408                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1409                                                          disp_dev->vpbe_dev);
1410                 if (err) {
1411                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1412                         err = -ENOMEM;
1413                         goto probe_out;
1414                 }
1415         }
1416
1417         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1418                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1419                         err = -ENODEV;
1420                         goto probe_out;
1421                 }
1422         }
1423
1424         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1425         if (!res) {
1426                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1427                 err = -ENODEV;
1428                 goto probe_out;
1429         }
1430
1431         irq = res->start;
1432         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1433                                VPBE_DISPLAY_DRIVER, disp_dev);
1434         if (err) {
1435                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1436                 goto probe_out;
1437         }
1438
1439         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1440                 /* initialize vb2 queue */
1441                 q = &disp_dev->dev[i]->buffer_queue;
1442                 memset(q, 0, sizeof(*q));
1443                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1444                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1445                 q->drv_priv = disp_dev->dev[i];
1446                 q->ops = &video_qops;
1447                 q->mem_ops = &vb2_dma_contig_memops;
1448                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1449                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1450                 q->min_buffers_needed = 1;
1451                 q->lock = &disp_dev->dev[i]->opslock;
1452                 q->dev = disp_dev->vpbe_dev->pdev;
1453                 err = vb2_queue_init(q);
1454                 if (err) {
1455                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1456                         goto probe_out;
1457                 }
1458
1459                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1460
1461                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1462                         err = -ENODEV;
1463                         goto probe_out;
1464                 }
1465         }
1466
1467         v4l2_dbg(1, debug, v4l2_dev,
1468                  "Successfully completed the probing of vpbe v4l2 device\n");
1469
1470         return 0;
1471
1472 probe_out:
1473         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1474                 /* Unregister video device */
1475                 if (disp_dev->dev[k]) {
1476                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1477                         kfree(disp_dev->dev[k]);
1478                 }
1479         }
1480         return err;
1481 }
1482
1483 /*
1484  * vpbe_display_remove()
1485  * It un-register hardware layer from V4L2 driver
1486  */
1487 static int vpbe_display_remove(struct platform_device *pdev)
1488 {
1489         struct vpbe_layer *vpbe_display_layer;
1490         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1491         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1492         int i;
1493
1494         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1495
1496         /* deinitialize the vpbe display controller */
1497         if (vpbe_dev->ops.deinitialize)
1498                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1499         /* un-register device */
1500         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1501                 /* Get the pointer to the layer object */
1502                 vpbe_display_layer = disp_dev->dev[i];
1503                 /* Unregister video device */
1504                 video_unregister_device(&vpbe_display_layer->video_dev);
1505
1506         }
1507         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1508                 kfree(disp_dev->dev[i]);
1509                 disp_dev->dev[i] = NULL;
1510         }
1511
1512         return 0;
1513 }
1514
1515 static struct platform_driver vpbe_display_driver = {
1516         .driver = {
1517                 .name = VPBE_DISPLAY_DRIVER,
1518                 .bus = &platform_bus_type,
1519         },
1520         .probe = vpbe_display_probe,
1521         .remove = vpbe_display_remove,
1522 };
1523
1524 module_platform_driver(vpbe_display_driver);
1525
1526 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1527 MODULE_LICENSE("GPL");
1528 MODULE_AUTHOR("Texas Instruments");