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.v4l2_buf.timestamp);
  78         vb2_buffer_done(&layer->cur_frm->vb, 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.state = VB2_BUF_STATE_ACTIVE;
 108         addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb, 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 struct v4l2_format *fmt,
 232                         unsigned int *nbuffers, unsigned int *nplanes,
 233                         unsigned int sizes[], void *alloc_ctxs[])
 234
 235 {
 236         /* Get the file handle object and layer object */
 237         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 238         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 239
 240         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
 241
 242         if (fmt && fmt->fmt.pix.sizeimage < layer->pix_fmt.sizeimage)
 243                 return -EINVAL;
 244
 245         /* Store number of buffers allocated in numbuffer member */
 246         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
 247                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
 248
 249         *nplanes = 1;
 250         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : layer->pix_fmt.sizeimage;
 251         alloc_ctxs[0] = layer->alloc_ctx;
 252
 253         return 0;
 254 }
 255
 256 /*
 257  * vpbe_buffer_queue()
 258  * This function adds the buffer to DMA queue
 259  */
 260 static void vpbe_buffer_queue(struct vb2_buffer *vb)
 261 {
 262         /* Get the file handle object and layer object */
 263         struct vpbe_disp_buffer *buf = container_of(vb,
 264                                 struct vpbe_disp_buffer, vb);
 265         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
 266         struct vpbe_display *disp = layer->disp_dev;
 267         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 268         unsigned long flags;
 269
 270         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 271                         "vpbe_buffer_queue\n");
 272
 273         /* add the buffer to the DMA queue */
 274         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 275         list_add_tail(&buf->list, &layer->dma_queue);
 276         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 277 }
 278
 279 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
 280 {
 281         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 282         struct osd_state *osd_device = layer->disp_dev->osd_device;
 283         int ret;
 284
 285          osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 286
 287         /* Get the next frame from the buffer queue */
 288         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
 289                                 struct vpbe_disp_buffer, list);
 290         /* Remove buffer from the buffer queue */
 291         list_del(&layer->cur_frm->list);
 292         /* Mark state of the current frame to active */
 293         layer->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
 294         /* Initialize field_id and started member */
 295         layer->field_id = 0;
 296
 297         /* Set parameters in OSD and VENC */
 298         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
 299         if (ret < 0) {
 300                 struct vpbe_disp_buffer *buf, *tmp;
 301
 302                 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_QUEUED);
 303                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
 304                         list_del(&buf->list);
 305                         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
 306                 }
 307
 308                 return ret;
 309         }
 310
 311         /*
 312          * if request format is yuv420 semiplanar, need to
 313          * enable both video windows
 314          */
 315         layer->layer_first_int = 1;
 316
 317         return ret;
 318 }
 319
 320 static void vpbe_stop_streaming(struct vb2_queue *vq)
 321 {
 322         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 323         struct osd_state *osd_device = layer->disp_dev->osd_device;
 324         struct vpbe_display *disp = layer->disp_dev;
 325         unsigned long flags;
 326
 327         if (!vb2_is_streaming(vq))
 328                 return;
 329
 330         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 331
 332         /* release all active buffers */
 333         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 334         if (layer->cur_frm == layer->next_frm) {
 335                 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_ERROR);
 336         } else {
 337                 if (layer->cur_frm != NULL)
 338                         vb2_buffer_done(&layer->cur_frm->vb,
 339                                         VB2_BUF_STATE_ERROR);
 340                 if (layer->next_frm != NULL)
 341                         vb2_buffer_done(&layer->next_frm->vb,
 342                                         VB2_BUF_STATE_ERROR);
 343         }
 344
 345         while (!list_empty(&layer->dma_queue)) {
 346                 layer->next_frm = list_entry(layer->dma_queue.next,
 347                                                 struct vpbe_disp_buffer, list);
 348                 list_del(&layer->next_frm->list);
 349                 vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR);
 350         }
 351         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 352 }
 353
 354 static struct vb2_ops video_qops = {
 355         .queue_setup = vpbe_buffer_queue_setup,
 356         .wait_prepare = vb2_ops_wait_prepare,
 357         .wait_finish = vb2_ops_wait_finish,
 358         .buf_prepare = vpbe_buffer_prepare,
 359         .start_streaming = vpbe_start_streaming,
 360         .stop_streaming = vpbe_stop_streaming,
 361         .buf_queue = vpbe_buffer_queue,
 362 };
 363
 364 static
 365 struct vpbe_layer*
 366 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
 367                         struct vpbe_layer *layer)
 368 {
 369         enum vpbe_display_device_id thiswin, otherwin;
 370         thiswin = layer->device_id;
 371
 372         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
 373         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
 374         return disp_dev->dev[otherwin];
 375 }
 376
 377 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
 378                         struct vpbe_layer *layer)
 379 {
 380         struct osd_layer_config *cfg  = &layer->layer_info.config;
 381         struct osd_state *osd_device = disp_dev->osd_device;
 382         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 383         unsigned long addr;
 384         int ret;
 385
 386         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb, 0);
 387         /* Set address in the display registers */
 388         osd_device->ops.start_layer(osd_device,
 389                                     layer->layer_info.id,
 390                                     addr,
 391                                     disp_dev->cbcr_ofst);
 392
 393         ret = osd_device->ops.enable_layer(osd_device,
 394                                 layer->layer_info.id, 0);
 395         if (ret < 0) {
 396                 v4l2_err(&vpbe_dev->v4l2_dev,
 397                         "Error in enabling osd window layer 0\n");
 398                 return -1;
 399         }
 400
 401         /* Enable the window */
 402         layer->layer_info.enable = 1;
 403         if (cfg->pixfmt == PIXFMT_NV12) {
 404                 struct vpbe_layer *otherlayer =
 405                         _vpbe_display_get_other_win_layer(disp_dev, layer);
 406
 407                 ret = osd_device->ops.enable_layer(osd_device,
 408                                 otherlayer->layer_info.id, 1);
 409                 if (ret < 0) {
 410                         v4l2_err(&vpbe_dev->v4l2_dev,
 411                                 "Error in enabling osd window layer 1\n");
 412                         return -1;
 413                 }
 414                 otherlayer->layer_info.enable = 1;
 415         }
 416         return 0;
 417 }
 418
 419 static void
 420 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
 421                         struct vpbe_layer *layer,
 422                         int expected_xsize, int expected_ysize)
 423 {
 424         struct display_layer_info *layer_info = &layer->layer_info;
 425         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
 426         struct osd_layer_config *cfg  = &layer->layer_info.config;
 427         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 428         int calculated_xsize;
 429         int h_exp = 0;
 430         int v_exp = 0;
 431         int h_scale;
 432         int v_scale;
 433
 434         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
 435
 436         /*
 437          * Application initially set the image format. Current display
 438          * size is obtained from the vpbe display controller. expected_xsize
 439          * and expected_ysize are set through S_CROP ioctl. Based on this,
 440          * driver will calculate the scale factors for vertical and
 441          * horizontal direction so that the image is displayed scaled
 442          * and expanded. Application uses expansion to display the image
 443          * in a square pixel. Otherwise it is displayed using displays
 444          * pixel aspect ratio.It is expected that application chooses
 445          * the crop coordinates for cropped or scaled display. if crop
 446          * size is less than the image size, it is displayed cropped or
 447          * it is displayed scaled and/or expanded.
 448          *
 449          * to begin with, set the crop window same as expected. Later we
 450          * will override with scaled window size
 451          */
 452
 453         cfg->xsize = pixfmt->width;
 454         cfg->ysize = pixfmt->height;
 455         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
 456         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
 457         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
 458         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
 459
 460         if (pixfmt->width < expected_xsize) {
 461                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
 462                 if (h_scale < 2)
 463                         h_scale = 1;
 464                 else if (h_scale >= 4)
 465                         h_scale = 4;
 466                 else
 467                         h_scale = 2;
 468                 cfg->xsize *= h_scale;
 469                 if (cfg->xsize < expected_xsize) {
 470                         if ((standard_id & V4L2_STD_525_60) ||
 471                         (standard_id & V4L2_STD_625_50)) {
 472                                 calculated_xsize = (cfg->xsize *
 473                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
 474                                         VPBE_DISPLAY_H_EXP_RATIO_D;
 475                                 if (calculated_xsize <= expected_xsize) {
 476                                         h_exp = 1;
 477                                         cfg->xsize = calculated_xsize;
 478                                 }
 479                         }
 480                 }
 481                 if (h_scale == 2)
 482                         layer_info->h_zoom = ZOOM_X2;
 483                 else if (h_scale == 4)
 484                         layer_info->h_zoom = ZOOM_X4;
 485                 if (h_exp)
 486                         layer_info->h_exp = H_EXP_9_OVER_8;
 487         } else {
 488                 /* no scaling, only cropping. Set display area to crop area */
 489                 cfg->xsize = expected_xsize;
 490         }
 491
 492         if (pixfmt->height < expected_ysize) {
 493                 v_scale = expected_ysize / pixfmt->height;
 494                 if (v_scale < 2)
 495                         v_scale = 1;
 496                 else if (v_scale >= 4)
 497                         v_scale = 4;
 498                 else
 499                         v_scale = 2;
 500                 cfg->ysize *= v_scale;
 501                 if (cfg->ysize < expected_ysize) {
 502                         if ((standard_id & V4L2_STD_625_50)) {
 503                                 calculated_xsize = (cfg->ysize *
 504                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
 505                                         VPBE_DISPLAY_V_EXP_RATIO_D;
 506                                 if (calculated_xsize <= expected_ysize) {
 507                                         v_exp = 1;
 508                                         cfg->ysize = calculated_xsize;
 509                                 }
 510                         }
 511                 }
 512                 if (v_scale == 2)
 513                         layer_info->v_zoom = ZOOM_X2;
 514                 else if (v_scale == 4)
 515                         layer_info->v_zoom = ZOOM_X4;
 516                 if (v_exp)
 517                         layer_info->h_exp = V_EXP_6_OVER_5;
 518         } else {
 519                 /* no scaling, only cropping. Set display area to crop area */
 520                 cfg->ysize = expected_ysize;
 521         }
 522         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 523                 "crop display xsize = %d, ysize = %d\n",
 524                 cfg->xsize, cfg->ysize);
 525 }
 526
 527 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
 528                         struct vpbe_layer *layer,
 529                         int top, int left)
 530 {
 531         struct osd_layer_config *cfg = &layer->layer_info.config;
 532         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 533
 534         cfg->xpos = min((unsigned int)left,
 535                         vpbe_dev->current_timings.xres - cfg->xsize);
 536         cfg->ypos = min((unsigned int)top,
 537                         vpbe_dev->current_timings.yres - cfg->ysize);
 538
 539         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 540                 "new xpos = %d, ypos = %d\n",
 541                 cfg->xpos, cfg->ypos);
 542 }
 543
 544 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
 545                         struct v4l2_rect *c)
 546 {
 547         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 548
 549         if ((c->width == 0) ||
 550           ((c->width + c->left) > vpbe_dev->current_timings.xres))
 551                 c->width = vpbe_dev->current_timings.xres - c->left;
 552
 553         if ((c->height == 0) || ((c->height + c->top) >
 554           vpbe_dev->current_timings.yres))
 555                 c->height = vpbe_dev->current_timings.yres - c->top;
 556
 557         /* window height must be even for interlaced display */
 558         if (vpbe_dev->current_timings.interlaced)
 559                 c->height &= (~0x01);
 560
 561 }
 562
 563 /**
 564  * vpbe_try_format()
 565  * If user application provides width and height, and have bytesperline set
 566  * to zero, driver calculates bytesperline and sizeimage based on hardware
 567  * limits.
 568  */
 569 static int vpbe_try_format(struct vpbe_display *disp_dev,
 570                         struct v4l2_pix_format *pixfmt, int check)
 571 {
 572         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 573         int min_height = 1;
 574         int min_width = 32;
 575         int max_height;
 576         int max_width;
 577         int bpp;
 578
 579         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
 580             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
 581                 /* choose default as V4L2_PIX_FMT_UYVY */
 582                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
 583
 584         /* Check the field format */
 585         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
 586                 (pixfmt->field != V4L2_FIELD_NONE)) {
 587                 if (vpbe_dev->current_timings.interlaced)
 588                         pixfmt->field = V4L2_FIELD_INTERLACED;
 589                 else
 590                         pixfmt->field = V4L2_FIELD_NONE;
 591         }
 592
 593         if (pixfmt->field == V4L2_FIELD_INTERLACED)
 594                 min_height = 2;
 595
 596         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 597                 bpp = 1;
 598         else
 599                 bpp = 2;
 600
 601         max_width = vpbe_dev->current_timings.xres;
 602         max_height = vpbe_dev->current_timings.yres;
 603
 604         min_width /= bpp;
 605
 606         if (!pixfmt->width || (pixfmt->width < min_width) ||
 607                 (pixfmt->width > max_width)) {
 608                 pixfmt->width = vpbe_dev->current_timings.xres;
 609         }
 610
 611         if (!pixfmt->height || (pixfmt->height  < min_height) ||
 612                 (pixfmt->height  > max_height)) {
 613                 pixfmt->height = vpbe_dev->current_timings.yres;
 614         }
 615
 616         if (pixfmt->bytesperline < (pixfmt->width * bpp))
 617                 pixfmt->bytesperline = pixfmt->width * bpp;
 618
 619         /* Make the bytesperline 32 byte aligned */
 620         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
 621
 622         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 623                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
 624                                 (pixfmt->bytesperline * pixfmt->height >> 1);
 625         else
 626                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 627
 628         return 0;
 629 }
 630
 631 static int vpbe_display_querycap(struct file *file, void  *priv,
 632                                struct v4l2_capability *cap)
 633 {
 634         struct vpbe_layer *layer = video_drvdata(file);
 635         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 636
 637         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 638         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 639         snprintf(cap->driver, sizeof(cap->driver), "%s",
 640                 dev_name(vpbe_dev->pdev));
 641         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 642                  dev_name(vpbe_dev->pdev));
 643         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
 644
 645         return 0;
 646 }
 647
 648 static int vpbe_display_s_crop(struct file *file, void *priv,
 649                              const struct v4l2_crop *crop)
 650 {
 651         struct vpbe_layer *layer = video_drvdata(file);
 652         struct vpbe_display *disp_dev = layer->disp_dev;
 653         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 654         struct osd_layer_config *cfg = &layer->layer_info.config;
 655         struct osd_state *osd_device = disp_dev->osd_device;
 656         struct v4l2_rect rect = crop->c;
 657         int ret;
 658
 659         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 660                 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
 661
 662         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 663                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 664                 return -EINVAL;
 665         }
 666
 667         if (rect.top < 0)
 668                 rect.top = 0;
 669         if (rect.left < 0)
 670                 rect.left = 0;
 671
 672         vpbe_disp_check_window_params(disp_dev, &rect);
 673
 674         osd_device->ops.get_layer_config(osd_device,
 675                         layer->layer_info.id, cfg);
 676
 677         vpbe_disp_calculate_scale_factor(disp_dev, layer,
 678                                         rect.width,
 679                                         rect.height);
 680         vpbe_disp_adj_position(disp_dev, layer, rect.top,
 681                                         rect.left);
 682         ret = osd_device->ops.set_layer_config(osd_device,
 683                                 layer->layer_info.id, cfg);
 684         if (ret < 0) {
 685                 v4l2_err(&vpbe_dev->v4l2_dev,
 686                         "Error in set layer config:\n");
 687                 return -EINVAL;
 688         }
 689
 690         /* apply zooming and h or v expansion */
 691         osd_device->ops.set_zoom(osd_device,
 692                         layer->layer_info.id,
 693                         layer->layer_info.h_zoom,
 694                         layer->layer_info.v_zoom);
 695         ret = osd_device->ops.set_vid_expansion(osd_device,
 696                         layer->layer_info.h_exp,
 697                         layer->layer_info.v_exp);
 698         if (ret < 0) {
 699                 v4l2_err(&vpbe_dev->v4l2_dev,
 700                 "Error in set vid expansion:\n");
 701                 return -EINVAL;
 702         }
 703
 704         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
 705                 (layer->layer_info.v_zoom != ZOOM_X1) ||
 706                 (layer->layer_info.h_exp != H_EXP_OFF) ||
 707                 (layer->layer_info.v_exp != V_EXP_OFF))
 708                 /* Enable expansion filter */
 709                 osd_device->ops.set_interpolation_filter(osd_device, 1);
 710         else
 711                 osd_device->ops.set_interpolation_filter(osd_device, 0);
 712
 713         return 0;
 714 }
 715
 716 static int vpbe_display_g_crop(struct file *file, void *priv,
 717                              struct v4l2_crop *crop)
 718 {
 719         struct vpbe_layer *layer = video_drvdata(file);
 720         struct osd_layer_config *cfg = &layer->layer_info.config;
 721         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 722         struct osd_state *osd_device = layer->disp_dev->osd_device;
 723         struct v4l2_rect *rect = &crop->c;
 724
 725         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 726                         "VIDIOC_G_CROP, layer id = %d\n",
 727                         layer->device_id);
 728
 729         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 730                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 731                 return -EINVAL;
 732         }
 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
 740         return 0;
 741 }
 742
 743 static int vpbe_display_cropcap(struct file *file, void *priv,
 744                               struct v4l2_cropcap *cropcap)
 745 {
 746         struct vpbe_layer *layer = video_drvdata(file);
 747         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 748
 749         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
 750
 751         cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 752         cropcap->bounds.left = 0;
 753         cropcap->bounds.top = 0;
 754         cropcap->bounds.width = vpbe_dev->current_timings.xres;
 755         cropcap->bounds.height = vpbe_dev->current_timings.yres;
 756         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
 757         cropcap->defrect = cropcap->bounds;
 758         return 0;
 759 }
 760
 761 static int vpbe_display_g_fmt(struct file *file, void *priv,
 762                                 struct v4l2_format *fmt)
 763 {
 764         struct vpbe_layer *layer = video_drvdata(file);
 765         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 766
 767         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 768                         "VIDIOC_G_FMT, layer id = %d\n",
 769                         layer->device_id);
 770
 771         /* If buffer type is video output */
 772         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 773                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 774                 return -EINVAL;
 775         }
 776         /* Fill in the information about format */
 777         fmt->fmt.pix = layer->pix_fmt;
 778
 779         return 0;
 780 }
 781
 782 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
 783                                    struct v4l2_fmtdesc *fmt)
 784 {
 785         struct vpbe_layer *layer = video_drvdata(file);
 786         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 787         unsigned int index = 0;
 788
 789         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 790                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
 791                                 layer->device_id);
 792         if (fmt->index > 1) {
 793                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
 794                 return -EINVAL;
 795         }
 796
 797         /* Fill in the information about format */
 798         index = fmt->index;
 799         memset(fmt, 0, sizeof(*fmt));
 800         fmt->index = index;
 801         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 802         if (index == 0) {
 803                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
 804                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
 805         } else {
 806                 strcpy(fmt->description, "Y/CbCr 4:2:0");
 807                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
 808         }
 809
 810         return 0;
 811 }
 812
 813 static int vpbe_display_s_fmt(struct file *file, void *priv,
 814                                 struct v4l2_format *fmt)
 815 {
 816         struct vpbe_layer *layer = video_drvdata(file);
 817         struct vpbe_display *disp_dev = layer->disp_dev;
 818         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 819         struct osd_layer_config *cfg  = &layer->layer_info.config;
 820         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 821         struct osd_state *osd_device = disp_dev->osd_device;
 822         int ret;
 823
 824         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 825                         "VIDIOC_S_FMT, layer id = %d\n",
 826                         layer->device_id);
 827
 828         if (vb2_is_busy(&layer->buffer_queue))
 829                 return -EBUSY;
 830
 831         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 832                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
 833                 return -EINVAL;
 834         }
 835         /* Check for valid pixel format */
 836         ret = vpbe_try_format(disp_dev, pixfmt, 1);
 837         if (ret)
 838                 return ret;
 839
 840         /* YUV420 is requested, check availability of the
 841         other video window */
 842
 843         layer->pix_fmt = *pixfmt;
 844         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
 845                 struct vpbe_layer *otherlayer;
 846
 847                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
 848                 /* if other layer is available, only
 849                  * claim it, do not configure it
 850                  */
 851                 ret = osd_device->ops.request_layer(osd_device,
 852                                                     otherlayer->layer_info.id);
 853                 if (ret < 0) {
 854                         v4l2_err(&vpbe_dev->v4l2_dev,
 855                                  "Display Manager failed to allocate layer\n");
 856                         return -EBUSY;
 857                 }
 858         }
 859
 860         /* Get osd layer config */
 861         osd_device->ops.get_layer_config(osd_device,
 862                         layer->layer_info.id, cfg);
 863         /* Store the pixel format in the layer object */
 864         cfg->xsize = pixfmt->width;
 865         cfg->ysize = pixfmt->height;
 866         cfg->line_length = pixfmt->bytesperline;
 867         cfg->ypos = 0;
 868         cfg->xpos = 0;
 869         cfg->interlaced = vpbe_dev->current_timings.interlaced;
 870
 871         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
 872                 cfg->pixfmt = PIXFMT_YCBCRI;
 873
 874         /* Change of the default pixel format for both video windows */
 875         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
 876                 struct vpbe_layer *otherlayer;
 877                 cfg->pixfmt = PIXFMT_NV12;
 878                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
 879                                                                 layer);
 880                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
 881         }
 882
 883         /* Set the layer config in the osd window */
 884         ret = osd_device->ops.set_layer_config(osd_device,
 885                                 layer->layer_info.id, cfg);
 886         if (ret < 0) {
 887                 v4l2_err(&vpbe_dev->v4l2_dev,
 888                                 "Error in S_FMT params:\n");
 889                 return -EINVAL;
 890         }
 891
 892         /* Readback and fill the local copy of current pix format */
 893         osd_device->ops.get_layer_config(osd_device,
 894                         layer->layer_info.id, cfg);
 895
 896         return 0;
 897 }
 898
 899 static int vpbe_display_try_fmt(struct file *file, void *priv,
 900                                   struct v4l2_format *fmt)
 901 {
 902         struct vpbe_layer *layer = video_drvdata(file);
 903         struct vpbe_display *disp_dev = layer->disp_dev;
 904         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 905         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 906
 907         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
 908
 909         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 910                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 911                 return -EINVAL;
 912         }
 913
 914         /* Check for valid field format */
 915         return  vpbe_try_format(disp_dev, pixfmt, 0);
 916
 917 }
 918
 919 /**
 920  * vpbe_display_s_std - Set the given standard in the encoder
 921  *
 922  * Sets the standard if supported by the current encoder. Return the status.
 923  * 0 - success & -EINVAL on error
 924  */
 925 static int vpbe_display_s_std(struct file *file, void *priv,
 926                                 v4l2_std_id std_id)
 927 {
 928         struct vpbe_layer *layer = video_drvdata(file);
 929         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 930         int ret;
 931
 932         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
 933
 934         if (vb2_is_busy(&layer->buffer_queue))
 935                 return -EBUSY;
 936
 937         if (NULL != vpbe_dev->ops.s_std) {
 938                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
 939                 if (ret) {
 940                         v4l2_err(&vpbe_dev->v4l2_dev,
 941                         "Failed to set standard for sub devices\n");
 942                         return -EINVAL;
 943                 }
 944         } else {
 945                 return -EINVAL;
 946         }
 947
 948         return 0;
 949 }
 950
 951 /**
 952  * vpbe_display_g_std - Get the standard in the current encoder
 953  *
 954  * Get the standard in the current encoder. Return the status. 0 - success
 955  * -EINVAL on error
 956  */
 957 static int vpbe_display_g_std(struct file *file, void *priv,
 958                                 v4l2_std_id *std_id)
 959 {
 960         struct vpbe_layer *layer = video_drvdata(file);
 961         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 962
 963         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
 964
 965         /* Get the standard from the current encoder */
 966         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
 967                 *std_id = vpbe_dev->current_timings.std_id;
 968                 return 0;
 969         }
 970
 971         return -EINVAL;
 972 }
 973
 974 /**
 975  * vpbe_display_enum_output - enumerate outputs
 976  *
 977  * Enumerates the outputs available at the vpbe display
 978  * returns the status, -EINVAL if end of output list
 979  */
 980 static int vpbe_display_enum_output(struct file *file, void *priv,
 981                                     struct v4l2_output *output)
 982 {
 983         struct vpbe_layer *layer = video_drvdata(file);
 984         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 985         int ret;
 986
 987         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
 988
 989         /* Enumerate outputs */
 990
 991         if (NULL == vpbe_dev->ops.enum_outputs)
 992                 return -EINVAL;
 993
 994         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
 995         if (ret) {
 996                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 997                         "Failed to enumerate outputs\n");
 998                 return -EINVAL;
 999         }
1000
1001         return 0;
1002 }
1003
1004 /**
1005  * vpbe_display_s_output - Set output to
1006  * the output specified by the index
1007  */
1008 static int vpbe_display_s_output(struct file *file, void *priv,
1009                                 unsigned int i)
1010 {
1011         struct vpbe_layer *layer = video_drvdata(file);
1012         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1013         int ret;
1014
1015         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1016
1017         if (vb2_is_busy(&layer->buffer_queue))
1018                 return -EBUSY;
1019
1020         if (NULL == vpbe_dev->ops.set_output)
1021                 return -EINVAL;
1022
1023         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1024         if (ret) {
1025                 v4l2_err(&vpbe_dev->v4l2_dev,
1026                         "Failed to set output for sub devices\n");
1027                 return -EINVAL;
1028         }
1029
1030         return 0;
1031 }
1032
1033 /**
1034  * vpbe_display_g_output - Get output from subdevice
1035  * for a given by the index
1036  */
1037 static int vpbe_display_g_output(struct file *file, void *priv,
1038                                 unsigned int *i)
1039 {
1040         struct vpbe_layer *layer = video_drvdata(file);
1041         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1042
1043         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1044         /* Get the standard from the current encoder */
1045         *i = vpbe_dev->current_out_index;
1046
1047         return 0;
1048 }
1049
1050 /**
1051  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1052  *
1053  * enum the timings in the current encoder. Return the status. 0 - success
1054  * -EINVAL on error
1055  */
1056 static int
1057 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1058                         struct v4l2_enum_dv_timings *timings)
1059 {
1060         struct vpbe_layer *layer = video_drvdata(file);
1061         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1062         int ret;
1063
1064         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1065
1066         /* Enumerate outputs */
1067         if (NULL == vpbe_dev->ops.enum_dv_timings)
1068                 return -EINVAL;
1069
1070         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1071         if (ret) {
1072                 v4l2_err(&vpbe_dev->v4l2_dev,
1073                         "Failed to enumerate dv timings info\n");
1074                 return -EINVAL;
1075         }
1076
1077         return 0;
1078 }
1079
1080 /**
1081  * vpbe_display_s_dv_timings - Set the dv timings
1082  *
1083  * Set the timings in the current encoder. Return the status. 0 - success
1084  * -EINVAL on error
1085  */
1086 static int
1087 vpbe_display_s_dv_timings(struct file *file, void *priv,
1088                                 struct v4l2_dv_timings *timings)
1089 {
1090         struct vpbe_layer *layer = video_drvdata(file);
1091         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1092         int ret;
1093
1094         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1095
1096         if (vb2_is_busy(&layer->buffer_queue))
1097                 return -EBUSY;
1098
1099         /* Set the given standard in the encoder */
1100         if (!vpbe_dev->ops.s_dv_timings)
1101                 return -EINVAL;
1102
1103         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1104         if (ret) {
1105                 v4l2_err(&vpbe_dev->v4l2_dev,
1106                         "Failed to set the dv timings info\n");
1107                 return -EINVAL;
1108         }
1109
1110         return 0;
1111 }
1112
1113 /**
1114  * vpbe_display_g_dv_timings - Set the dv timings
1115  *
1116  * Get the timings in the current encoder. Return the status. 0 - success
1117  * -EINVAL on error
1118  */
1119 static int
1120 vpbe_display_g_dv_timings(struct file *file, void *priv,
1121                                 struct v4l2_dv_timings *dv_timings)
1122 {
1123         struct vpbe_layer *layer = video_drvdata(file);
1124         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1125
1126         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1127
1128         /* Get the given standard in the encoder */
1129
1130         if (vpbe_dev->current_timings.timings_type &
1131                                 VPBE_ENC_DV_TIMINGS) {
1132                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1133         } else {
1134                 return -EINVAL;
1135         }
1136
1137         return 0;
1138 }
1139
1140 /*
1141  * vpbe_display_open()
1142  * It creates object of file handle structure and stores it in private_data
1143  * member of filepointer
1144  */
1145 static int vpbe_display_open(struct file *file)
1146 {
1147         struct vpbe_layer *layer = video_drvdata(file);
1148         struct vpbe_display *disp_dev = layer->disp_dev;
1149         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1150         struct osd_state *osd_device = disp_dev->osd_device;
1151         int err;
1152
1153         /* creating context for file descriptor */
1154         err = v4l2_fh_open(file);
1155         if (err) {
1156                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1157                 return err;
1158         }
1159
1160         /* leaving if layer is already initialized */
1161         if (!v4l2_fh_is_singular_file(file))
1162                 return err;
1163
1164         if (!layer->usrs) {
1165                 if (mutex_lock_interruptible(&layer->opslock))
1166                         return -ERESTARTSYS;
1167                 /* First claim the layer for this device */
1168                 err = osd_device->ops.request_layer(osd_device,
1169                                                 layer->layer_info.id);
1170                 mutex_unlock(&layer->opslock);
1171                 if (err < 0) {
1172                         /* Couldn't get layer */
1173                         v4l2_err(&vpbe_dev->v4l2_dev,
1174                                 "Display Manager failed to allocate layer\n");
1175                         v4l2_fh_release(file);
1176                         return -EINVAL;
1177                 }
1178         }
1179         /* Increment layer usrs counter */
1180         layer->usrs++;
1181         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1182                         "vpbe display device opened successfully\n");
1183         return 0;
1184 }
1185
1186 /*
1187  * vpbe_display_release()
1188  * This function deletes buffer queue, frees the buffers and the davinci
1189  * display file * handle
1190  */
1191 static int vpbe_display_release(struct file *file)
1192 {
1193         struct vpbe_layer *layer = video_drvdata(file);
1194         struct osd_layer_config *cfg  = &layer->layer_info.config;
1195         struct vpbe_display *disp_dev = layer->disp_dev;
1196         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1197         struct osd_state *osd_device = disp_dev->osd_device;
1198
1199         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1200
1201         mutex_lock(&layer->opslock);
1202
1203         osd_device->ops.disable_layer(osd_device,
1204                         layer->layer_info.id);
1205         /* Decrement layer usrs counter */
1206         layer->usrs--;
1207         /* If this file handle has initialize encoder device, reset it */
1208         if (!layer->usrs) {
1209                 if (cfg->pixfmt == PIXFMT_NV12) {
1210                         struct vpbe_layer *otherlayer;
1211                         otherlayer =
1212                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1213                         osd_device->ops.disable_layer(osd_device,
1214                                         otherlayer->layer_info.id);
1215                         osd_device->ops.release_layer(osd_device,
1216                                         otherlayer->layer_info.id);
1217                 }
1218                 osd_device->ops.disable_layer(osd_device,
1219                                 layer->layer_info.id);
1220                 osd_device->ops.release_layer(osd_device,
1221                                 layer->layer_info.id);
1222         }
1223
1224         _vb2_fop_release(file, NULL);
1225         mutex_unlock(&layer->opslock);
1226
1227         disp_dev->cbcr_ofst = 0;
1228
1229         return 0;
1230 }
1231
1232 /* vpbe capture ioctl operations */
1233 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1234         .vidioc_querycap         = vpbe_display_querycap,
1235         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1236         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1237         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1238         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1239
1240         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1241         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1242         .vidioc_querybuf         = vb2_ioctl_querybuf,
1243         .vidioc_qbuf             = vb2_ioctl_qbuf,
1244         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1245         .vidioc_streamon         = vb2_ioctl_streamon,
1246         .vidioc_streamoff        = vb2_ioctl_streamoff,
1247         .vidioc_expbuf           = vb2_ioctl_expbuf,
1248
1249         .vidioc_cropcap          = vpbe_display_cropcap,
1250         .vidioc_g_crop           = vpbe_display_g_crop,
1251         .vidioc_s_crop           = vpbe_display_s_crop,
1252
1253         .vidioc_s_std            = vpbe_display_s_std,
1254         .vidioc_g_std            = vpbe_display_g_std,
1255
1256         .vidioc_enum_output      = vpbe_display_enum_output,
1257         .vidioc_s_output         = vpbe_display_s_output,
1258         .vidioc_g_output         = vpbe_display_g_output,
1259
1260         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1261         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1262         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1263 };
1264
1265 static struct v4l2_file_operations vpbe_fops = {
1266         .owner = THIS_MODULE,
1267         .open = vpbe_display_open,
1268         .release = vpbe_display_release,
1269         .unlocked_ioctl = video_ioctl2,
1270         .mmap = vb2_fop_mmap,
1271         .poll =  vb2_fop_poll,
1272 };
1273
1274 static int vpbe_device_get(struct device *dev, void *data)
1275 {
1276         struct platform_device *pdev = to_platform_device(dev);
1277         struct vpbe_display *vpbe_disp  = data;
1278
1279         if (strcmp("vpbe_controller", pdev->name) == 0)
1280                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1281
1282         if (strstr(pdev->name, "vpbe-osd") != NULL)
1283                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1284
1285         return 0;
1286 }
1287
1288 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1289                            struct platform_device *pdev)
1290 {
1291         struct vpbe_layer *vpbe_display_layer = NULL;
1292         struct video_device *vbd = NULL;
1293
1294         /* Allocate memory for four plane display objects */
1295
1296         disp_dev->dev[i] =
1297                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1298
1299         /* If memory allocation fails, return error */
1300         if (!disp_dev->dev[i]) {
1301                 printk(KERN_ERR "ran out of memory\n");
1302                 return  -ENOMEM;
1303         }
1304         spin_lock_init(&disp_dev->dev[i]->irqlock);
1305         mutex_init(&disp_dev->dev[i]->opslock);
1306
1307         /* Get the pointer to the layer object */
1308         vpbe_display_layer = disp_dev->dev[i];
1309         vbd = &vpbe_display_layer->video_dev;
1310         /* Initialize field of video device */
1311         vbd->release    = video_device_release_empty;
1312         vbd->fops       = &vpbe_fops;
1313         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1314         vbd->minor      = -1;
1315         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1316         vbd->lock       = &vpbe_display_layer->opslock;
1317         vbd->vfl_dir    = VFL_DIR_TX;
1318
1319         if (disp_dev->vpbe_dev->current_timings.timings_type &
1320                         VPBE_ENC_STD)
1321                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1322
1323         snprintf(vbd->name, sizeof(vbd->name),
1324                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1325                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1326                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1327                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1328
1329         vpbe_display_layer->device_id = i;
1330
1331         vpbe_display_layer->layer_info.id =
1332                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1333
1334
1335         return 0;
1336 }
1337
1338 static int register_device(struct vpbe_layer *vpbe_display_layer,
1339                            struct vpbe_display *disp_dev,
1340                            struct platform_device *pdev)
1341 {
1342         int err;
1343
1344         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1345                   "Trying to register VPBE display device.\n");
1346         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1347                   "layer=%x,layer->video_dev=%x\n",
1348                   (int)vpbe_display_layer,
1349                   (int)&vpbe_display_layer->video_dev);
1350
1351         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1352         err = video_register_device(&vpbe_display_layer->video_dev,
1353                                     VFL_TYPE_GRABBER,
1354                                     -1);
1355         if (err)
1356                 return -ENODEV;
1357
1358         vpbe_display_layer->disp_dev = disp_dev;
1359         /* set the driver data in platform device */
1360         platform_set_drvdata(pdev, disp_dev);
1361         video_set_drvdata(&vpbe_display_layer->video_dev,
1362                           vpbe_display_layer);
1363
1364         return 0;
1365 }
1366
1367
1368
1369 /*
1370  * vpbe_display_probe()
1371  * This function creates device entries by register itself to the V4L2 driver
1372  * and initializes fields of each layer objects
1373  */
1374 static int vpbe_display_probe(struct platform_device *pdev)
1375 {
1376         struct vpbe_display *disp_dev;
1377         struct v4l2_device *v4l2_dev;
1378         struct resource *res = NULL;
1379         struct vb2_queue *q;
1380         int k;
1381         int i;
1382         int err;
1383         int irq;
1384
1385         printk(KERN_DEBUG "vpbe_display_probe\n");
1386         /* Allocate memory for vpbe_display */
1387         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1388                                 GFP_KERNEL);
1389         if (!disp_dev)
1390                 return -ENOMEM;
1391
1392         spin_lock_init(&disp_dev->dma_queue_lock);
1393         /*
1394          * Scan all the platform devices to find the vpbe
1395          * controller device and get the vpbe_dev object
1396          */
1397         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1398                         vpbe_device_get);
1399         if (err < 0)
1400                 return err;
1401
1402         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1403         /* Initialize the vpbe display controller */
1404         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1405                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1406                                                          disp_dev->vpbe_dev);
1407                 if (err) {
1408                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1409                         err = -ENOMEM;
1410                         goto probe_out;
1411                 }
1412         }
1413
1414         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1415                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1416                         err = -ENODEV;
1417                         goto probe_out;
1418                 }
1419         }
1420
1421         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1422         if (!res) {
1423                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1424                 err = -ENODEV;
1425                 goto probe_out;
1426         }
1427
1428         irq = res->start;
1429         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1430                                VPBE_DISPLAY_DRIVER, disp_dev);
1431         if (err) {
1432                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1433                 goto probe_out;
1434         }
1435
1436         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1437                 /* initialize vb2 queue */
1438                 q = &disp_dev->dev[i]->buffer_queue;
1439                 memset(q, 0, sizeof(*q));
1440                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1441                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1442                 q->drv_priv = disp_dev->dev[i];
1443                 q->ops = &video_qops;
1444                 q->mem_ops = &vb2_dma_contig_memops;
1445                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1446                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1447                 q->min_buffers_needed = 1;
1448                 q->lock = &disp_dev->dev[i]->opslock;
1449                 err = vb2_queue_init(q);
1450                 if (err) {
1451                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1452                         goto probe_out;
1453                 }
1454
1455                 disp_dev->dev[i]->alloc_ctx =
1456                         vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev);
1457                 if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) {
1458                         v4l2_err(v4l2_dev, "Failed to get the context\n");
1459                         err = PTR_ERR(disp_dev->dev[i]->alloc_ctx);
1460                         goto probe_out;
1461                 }
1462
1463                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1464
1465                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1466                         err = -ENODEV;
1467                         goto probe_out;
1468                 }
1469         }
1470
1471         v4l2_dbg(1, debug, v4l2_dev,
1472                  "Successfully completed the probing of vpbe v4l2 device\n");
1473
1474         return 0;
1475
1476 probe_out:
1477         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1478                 /* Unregister video device */
1479                 if (disp_dev->dev[k] != NULL) {
1480                         vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx);
1481                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1482                         kfree(disp_dev->dev[k]);
1483                 }
1484         }
1485         return err;
1486 }
1487
1488 /*
1489  * vpbe_display_remove()
1490  * It un-register hardware layer from V4L2 driver
1491  */
1492 static int vpbe_display_remove(struct platform_device *pdev)
1493 {
1494         struct vpbe_layer *vpbe_display_layer;
1495         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1496         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1497         int i;
1498
1499         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1500
1501         /* deinitialize the vpbe display controller */
1502         if (NULL != vpbe_dev->ops.deinitialize)
1503                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1504         /* un-register device */
1505         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1506                 /* Get the pointer to the layer object */
1507                 vpbe_display_layer = disp_dev->dev[i];
1508                 vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx);
1509                 /* Unregister video device */
1510                 video_unregister_device(&vpbe_display_layer->video_dev);
1511
1512         }
1513         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1514                 kfree(disp_dev->dev[i]);
1515                 disp_dev->dev[i] = NULL;
1516         }
1517
1518         return 0;
1519 }
1520
1521 static struct platform_driver vpbe_display_driver = {
1522         .driver = {
1523                 .name = VPBE_DISPLAY_DRIVER,
1524                 .bus = &platform_bus_type,
1525         },
1526         .probe = vpbe_display_probe,
1527         .remove = vpbe_display_remove,
1528 };
1529
1530 module_platform_driver(vpbe_display_driver);
1531
1532 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1533 MODULE_LICENSE("GPL");
1534 MODULE_AUTHOR("Texas Instruments");