kernel/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         struct timespec timevalue;
  75
  76         if (layer->cur_frm == layer->next_frm)
  77                 return;
  78         ktime_get_ts(&timevalue);
  79         layer->cur_frm->vb.v4l2_buf.timestamp.tv_sec =
  80                 timevalue.tv_sec;
  81         layer->cur_frm->vb.v4l2_buf.timestamp.tv_usec =
  82                 timevalue.tv_nsec / NSEC_PER_USEC;
  83         vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_DONE);
  84         /* Make cur_frm pointing to next_frm */
  85         layer->cur_frm = layer->next_frm;
  86 }
  87
  88 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
  89                                 struct vpbe_layer *layer)
  90 {
  91         struct osd_state *osd_device = disp_obj->osd_device;
  92         unsigned long addr;
  93
  94         spin_lock(&disp_obj->dma_queue_lock);
  95         if (list_empty(&layer->dma_queue) ||
  96                 (layer->cur_frm != layer->next_frm)) {
  97                 spin_unlock(&disp_obj->dma_queue_lock);
  98                 return;
  99         }
 100         /*
 101          * one field is displayed configure
 102          * the next frame if it is available
 103          * otherwise hold on current frame
 104          * Get next from the buffer queue
 105          */
 106         layer->next_frm = list_entry(layer->dma_queue.next,
 107                           struct  vpbe_disp_buffer, list);
 108         /* Remove that from the buffer queue */
 109         list_del(&layer->next_frm->list);
 110         spin_unlock(&disp_obj->dma_queue_lock);
 111         /* Mark state of the frame to active */
 112         layer->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
 113         addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb, 0);
 114         osd_device->ops.start_layer(osd_device,
 115                         layer->layer_info.id,
 116                         addr,
 117                         disp_obj->cbcr_ofst);
 118 }
 119
 120 /* interrupt service routine */
 121 static irqreturn_t venc_isr(int irq, void *arg)
 122 {
 123         struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
 124         struct vpbe_layer *layer;
 125         static unsigned last_event;
 126         unsigned event = 0;
 127         int fid;
 128         int i;
 129
 130         if ((NULL == arg) || (NULL == disp_dev->dev[0]))
 131                 return IRQ_HANDLED;
 132
 133         if (venc_is_second_field(disp_dev))
 134                 event |= VENC_SECOND_FIELD;
 135         else
 136                 event |= VENC_FIRST_FIELD;
 137
 138         if (event == (last_event & ~VENC_END_OF_FRAME)) {
 139                 /*
 140                 * If the display is non-interlaced, then we need to flag the
 141                 * end-of-frame event at every interrupt regardless of the
 142                 * value of the FIDST bit.  We can conclude that the display is
 143                 * non-interlaced if the value of the FIDST bit is unchanged
 144                 * from the previous interrupt.
 145                 */
 146                 event |= VENC_END_OF_FRAME;
 147         } else if (event == VENC_SECOND_FIELD) {
 148                 /* end-of-frame for interlaced display */
 149                 event |= VENC_END_OF_FRAME;
 150         }
 151         last_event = event;
 152
 153         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
 154                 layer = disp_dev->dev[i];
 155
 156                 if (!vb2_start_streaming_called(&layer->buffer_queue))
 157                         continue;
 158
 159                 if (layer->layer_first_int) {
 160                         layer->layer_first_int = 0;
 161                         continue;
 162                 }
 163                 /* Check the field format */
 164                 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
 165                         (event & VENC_END_OF_FRAME)) {
 166                         /* Progressive mode */
 167
 168                         vpbe_isr_even_field(disp_dev, layer);
 169                         vpbe_isr_odd_field(disp_dev, layer);
 170                 } else {
 171                 /* Interlaced mode */
 172
 173                         layer->field_id ^= 1;
 174                         if (event & VENC_FIRST_FIELD)
 175                                 fid = 0;
 176                         else
 177                                 fid = 1;
 178
 179                         /*
 180                         * If field id does not match with store
 181                         * field id
 182                         */
 183                         if (fid != layer->field_id) {
 184                                 /* Make them in sync */
 185                                 layer->field_id = fid;
 186                                 continue;
 187                         }
 188                         /*
 189                         * device field id and local field id are
 190                         * in sync. If this is even field
 191                         */
 192                         if (0 == fid)
 193                                 vpbe_isr_even_field(disp_dev, layer);
 194                         else  /* odd field */
 195                                 vpbe_isr_odd_field(disp_dev, layer);
 196                 }
 197         }
 198
 199         return IRQ_HANDLED;
 200 }
 201
 202 /*
 203  * vpbe_buffer_prepare()
 204  * This is the callback function called from vb2_qbuf() function
 205  * the buffer is prepared and user space virtual address is converted into
 206  * physical address
 207  */
 208 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
 209 {
 210         struct vb2_queue *q = vb->vb2_queue;
 211         struct vpbe_layer *layer = vb2_get_drv_priv(q);
 212         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 213         unsigned long addr;
 214
 215         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 216                                 "vpbe_buffer_prepare\n");
 217
 218         vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
 219         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
 220                 return -EINVAL;
 221
 222         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
 223         if (!IS_ALIGNED(addr, 8)) {
 224                 v4l2_err(&vpbe_dev->v4l2_dev,
 225                          "buffer_prepare:offset is not aligned to 32 bytes\n");
 226                 return -EINVAL;
 227         }
 228         return 0;
 229 }
 230
 231 /*
 232  * vpbe_buffer_setup()
 233  * This function allocates memory for the buffers
 234  */
 235 static int
 236 vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
 237                         unsigned int *nbuffers, unsigned int *nplanes,
 238                         unsigned int sizes[], void *alloc_ctxs[])
 239
 240 {
 241         /* Get the file handle object and layer object */
 242         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 243         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 244
 245         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
 246
 247         if (fmt && fmt->fmt.pix.sizeimage < layer->pix_fmt.sizeimage)
 248                 return -EINVAL;
 249
 250         /* Store number of buffers allocated in numbuffer member */
 251         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
 252                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
 253
 254         *nplanes = 1;
 255         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : layer->pix_fmt.sizeimage;
 256         alloc_ctxs[0] = layer->alloc_ctx;
 257
 258         return 0;
 259 }
 260
 261 /*
 262  * vpbe_buffer_queue()
 263  * This function adds the buffer to DMA queue
 264  */
 265 static void vpbe_buffer_queue(struct vb2_buffer *vb)
 266 {
 267         /* Get the file handle object and layer object */
 268         struct vpbe_disp_buffer *buf = container_of(vb,
 269                                 struct vpbe_disp_buffer, vb);
 270         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
 271         struct vpbe_display *disp = layer->disp_dev;
 272         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 273         unsigned long flags;
 274
 275         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 276                         "vpbe_buffer_queue\n");
 277
 278         /* add the buffer to the DMA queue */
 279         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 280         list_add_tail(&buf->list, &layer->dma_queue);
 281         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 282 }
 283
 284 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
 285 {
 286         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 287         struct osd_state *osd_device = layer->disp_dev->osd_device;
 288         int ret;
 289
 290          osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 291
 292         /* Get the next frame from the buffer queue */
 293         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
 294                                 struct vpbe_disp_buffer, list);
 295         /* Remove buffer from the buffer queue */
 296         list_del(&layer->cur_frm->list);
 297         /* Mark state of the current frame to active */
 298         layer->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
 299         /* Initialize field_id and started member */
 300         layer->field_id = 0;
 301
 302         /* Set parameters in OSD and VENC */
 303         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
 304         if (ret < 0) {
 305                 struct vpbe_disp_buffer *buf, *tmp;
 306
 307                 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_QUEUED);
 308                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
 309                         list_del(&buf->list);
 310                         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
 311                 }
 312
 313                 return ret;
 314         }
 315
 316         /*
 317          * if request format is yuv420 semiplanar, need to
 318          * enable both video windows
 319          */
 320         layer->layer_first_int = 1;
 321
 322         return ret;
 323 }
 324
 325 static void vpbe_stop_streaming(struct vb2_queue *vq)
 326 {
 327         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 328         struct osd_state *osd_device = layer->disp_dev->osd_device;
 329         struct vpbe_display *disp = layer->disp_dev;
 330         unsigned long flags;
 331
 332         if (!vb2_is_streaming(vq))
 333                 return;
 334
 335         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 336
 337         /* release all active buffers */
 338         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 339         if (layer->cur_frm == layer->next_frm) {
 340                 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_ERROR);
 341         } else {
 342                 if (layer->cur_frm != NULL)
 343                         vb2_buffer_done(&layer->cur_frm->vb,
 344                                         VB2_BUF_STATE_ERROR);
 345                 if (layer->next_frm != NULL)
 346                         vb2_buffer_done(&layer->next_frm->vb,
 347                                         VB2_BUF_STATE_ERROR);
 348         }
 349
 350         while (!list_empty(&layer->dma_queue)) {
 351                 layer->next_frm = list_entry(layer->dma_queue.next,
 352                                                 struct vpbe_disp_buffer, list);
 353                 list_del(&layer->next_frm->list);
 354                 vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR);
 355         }
 356         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 357 }
 358
 359 static struct vb2_ops video_qops = {
 360         .queue_setup = vpbe_buffer_queue_setup,
 361         .wait_prepare = vb2_ops_wait_prepare,
 362         .wait_finish = vb2_ops_wait_finish,
 363         .buf_prepare = vpbe_buffer_prepare,
 364         .start_streaming = vpbe_start_streaming,
 365         .stop_streaming = vpbe_stop_streaming,
 366         .buf_queue = vpbe_buffer_queue,
 367 };
 368
 369 static
 370 struct vpbe_layer*
 371 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
 372                         struct vpbe_layer *layer)
 373 {
 374         enum vpbe_display_device_id thiswin, otherwin;
 375         thiswin = layer->device_id;
 376
 377         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
 378         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
 379         return disp_dev->dev[otherwin];
 380 }
 381
 382 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
 383                         struct vpbe_layer *layer)
 384 {
 385         struct osd_layer_config *cfg  = &layer->layer_info.config;
 386         struct osd_state *osd_device = disp_dev->osd_device;
 387         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 388         unsigned long addr;
 389         int ret;
 390
 391         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb, 0);
 392         /* Set address in the display registers */
 393         osd_device->ops.start_layer(osd_device,
 394                                     layer->layer_info.id,
 395                                     addr,
 396                                     disp_dev->cbcr_ofst);
 397
 398         ret = osd_device->ops.enable_layer(osd_device,
 399                                 layer->layer_info.id, 0);
 400         if (ret < 0) {
 401                 v4l2_err(&vpbe_dev->v4l2_dev,
 402                         "Error in enabling osd window layer 0\n");
 403                 return -1;
 404         }
 405
 406         /* Enable the window */
 407         layer->layer_info.enable = 1;
 408         if (cfg->pixfmt == PIXFMT_NV12) {
 409                 struct vpbe_layer *otherlayer =
 410                         _vpbe_display_get_other_win_layer(disp_dev, layer);
 411
 412                 ret = osd_device->ops.enable_layer(osd_device,
 413                                 otherlayer->layer_info.id, 1);
 414                 if (ret < 0) {
 415                         v4l2_err(&vpbe_dev->v4l2_dev,
 416                                 "Error in enabling osd window layer 1\n");
 417                         return -1;
 418                 }
 419                 otherlayer->layer_info.enable = 1;
 420         }
 421         return 0;
 422 }
 423
 424 static void
 425 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
 426                         struct vpbe_layer *layer,
 427                         int expected_xsize, int expected_ysize)
 428 {
 429         struct display_layer_info *layer_info = &layer->layer_info;
 430         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
 431         struct osd_layer_config *cfg  = &layer->layer_info.config;
 432         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 433         int calculated_xsize;
 434         int h_exp = 0;
 435         int v_exp = 0;
 436         int h_scale;
 437         int v_scale;
 438
 439         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
 440
 441         /*
 442          * Application initially set the image format. Current display
 443          * size is obtained from the vpbe display controller. expected_xsize
 444          * and expected_ysize are set through S_CROP ioctl. Based on this,
 445          * driver will calculate the scale factors for vertical and
 446          * horizontal direction so that the image is displayed scaled
 447          * and expanded. Application uses expansion to display the image
 448          * in a square pixel. Otherwise it is displayed using displays
 449          * pixel aspect ratio.It is expected that application chooses
 450          * the crop coordinates for cropped or scaled display. if crop
 451          * size is less than the image size, it is displayed cropped or
 452          * it is displayed scaled and/or expanded.
 453          *
 454          * to begin with, set the crop window same as expected. Later we
 455          * will override with scaled window size
 456          */
 457
 458         cfg->xsize = pixfmt->width;
 459         cfg->ysize = pixfmt->height;
 460         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
 461         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
 462         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
 463         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
 464
 465         if (pixfmt->width < expected_xsize) {
 466                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
 467                 if (h_scale < 2)
 468                         h_scale = 1;
 469                 else if (h_scale >= 4)
 470                         h_scale = 4;
 471                 else
 472                         h_scale = 2;
 473                 cfg->xsize *= h_scale;
 474                 if (cfg->xsize < expected_xsize) {
 475                         if ((standard_id & V4L2_STD_525_60) ||
 476                         (standard_id & V4L2_STD_625_50)) {
 477                                 calculated_xsize = (cfg->xsize *
 478                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
 479                                         VPBE_DISPLAY_H_EXP_RATIO_D;
 480                                 if (calculated_xsize <= expected_xsize) {
 481                                         h_exp = 1;
 482                                         cfg->xsize = calculated_xsize;
 483                                 }
 484                         }
 485                 }
 486                 if (h_scale == 2)
 487                         layer_info->h_zoom = ZOOM_X2;
 488                 else if (h_scale == 4)
 489                         layer_info->h_zoom = ZOOM_X4;
 490                 if (h_exp)
 491                         layer_info->h_exp = H_EXP_9_OVER_8;
 492         } else {
 493                 /* no scaling, only cropping. Set display area to crop area */
 494                 cfg->xsize = expected_xsize;
 495         }
 496
 497         if (pixfmt->height < expected_ysize) {
 498                 v_scale = expected_ysize / pixfmt->height;
 499                 if (v_scale < 2)
 500                         v_scale = 1;
 501                 else if (v_scale >= 4)
 502                         v_scale = 4;
 503                 else
 504                         v_scale = 2;
 505                 cfg->ysize *= v_scale;
 506                 if (cfg->ysize < expected_ysize) {
 507                         if ((standard_id & V4L2_STD_625_50)) {
 508                                 calculated_xsize = (cfg->ysize *
 509                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
 510                                         VPBE_DISPLAY_V_EXP_RATIO_D;
 511                                 if (calculated_xsize <= expected_ysize) {
 512                                         v_exp = 1;
 513                                         cfg->ysize = calculated_xsize;
 514                                 }
 515                         }
 516                 }
 517                 if (v_scale == 2)
 518                         layer_info->v_zoom = ZOOM_X2;
 519                 else if (v_scale == 4)
 520                         layer_info->v_zoom = ZOOM_X4;
 521                 if (v_exp)
 522                         layer_info->h_exp = V_EXP_6_OVER_5;
 523         } else {
 524                 /* no scaling, only cropping. Set display area to crop area */
 525                 cfg->ysize = expected_ysize;
 526         }
 527         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 528                 "crop display xsize = %d, ysize = %d\n",
 529                 cfg->xsize, cfg->ysize);
 530 }
 531
 532 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
 533                         struct vpbe_layer *layer,
 534                         int top, int left)
 535 {
 536         struct osd_layer_config *cfg = &layer->layer_info.config;
 537         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 538
 539         cfg->xpos = min((unsigned int)left,
 540                         vpbe_dev->current_timings.xres - cfg->xsize);
 541         cfg->ypos = min((unsigned int)top,
 542                         vpbe_dev->current_timings.yres - cfg->ysize);
 543
 544         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 545                 "new xpos = %d, ypos = %d\n",
 546                 cfg->xpos, cfg->ypos);
 547 }
 548
 549 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
 550                         struct v4l2_rect *c)
 551 {
 552         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 553
 554         if ((c->width == 0) ||
 555           ((c->width + c->left) > vpbe_dev->current_timings.xres))
 556                 c->width = vpbe_dev->current_timings.xres - c->left;
 557
 558         if ((c->height == 0) || ((c->height + c->top) >
 559           vpbe_dev->current_timings.yres))
 560                 c->height = vpbe_dev->current_timings.yres - c->top;
 561
 562         /* window height must be even for interlaced display */
 563         if (vpbe_dev->current_timings.interlaced)
 564                 c->height &= (~0x01);
 565
 566 }
 567
 568 /**
 569  * vpbe_try_format()
 570  * If user application provides width and height, and have bytesperline set
 571  * to zero, driver calculates bytesperline and sizeimage based on hardware
 572  * limits.
 573  */
 574 static int vpbe_try_format(struct vpbe_display *disp_dev,
 575                         struct v4l2_pix_format *pixfmt, int check)
 576 {
 577         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 578         int min_height = 1;
 579         int min_width = 32;
 580         int max_height;
 581         int max_width;
 582         int bpp;
 583
 584         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
 585             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
 586                 /* choose default as V4L2_PIX_FMT_UYVY */
 587                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
 588
 589         /* Check the field format */
 590         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
 591                 (pixfmt->field != V4L2_FIELD_NONE)) {
 592                 if (vpbe_dev->current_timings.interlaced)
 593                         pixfmt->field = V4L2_FIELD_INTERLACED;
 594                 else
 595                         pixfmt->field = V4L2_FIELD_NONE;
 596         }
 597
 598         if (pixfmt->field == V4L2_FIELD_INTERLACED)
 599                 min_height = 2;
 600
 601         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 602                 bpp = 1;
 603         else
 604                 bpp = 2;
 605
 606         max_width = vpbe_dev->current_timings.xres;
 607         max_height = vpbe_dev->current_timings.yres;
 608
 609         min_width /= bpp;
 610
 611         if (!pixfmt->width || (pixfmt->width < min_width) ||
 612                 (pixfmt->width > max_width)) {
 613                 pixfmt->width = vpbe_dev->current_timings.xres;
 614         }
 615
 616         if (!pixfmt->height || (pixfmt->height  < min_height) ||
 617                 (pixfmt->height  > max_height)) {
 618                 pixfmt->height = vpbe_dev->current_timings.yres;
 619         }
 620
 621         if (pixfmt->bytesperline < (pixfmt->width * bpp))
 622                 pixfmt->bytesperline = pixfmt->width * bpp;
 623
 624         /* Make the bytesperline 32 byte aligned */
 625         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
 626
 627         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 628                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
 629                                 (pixfmt->bytesperline * pixfmt->height >> 1);
 630         else
 631                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 632
 633         return 0;
 634 }
 635
 636 static int vpbe_display_querycap(struct file *file, void  *priv,
 637                                struct v4l2_capability *cap)
 638 {
 639         struct vpbe_layer *layer = video_drvdata(file);
 640         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 641
 642         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 643         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 644         snprintf(cap->driver, sizeof(cap->driver), "%s",
 645                 dev_name(vpbe_dev->pdev));
 646         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 647                  dev_name(vpbe_dev->pdev));
 648         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
 649
 650         return 0;
 651 }
 652
 653 static int vpbe_display_s_crop(struct file *file, void *priv,
 654                              const struct v4l2_crop *crop)
 655 {
 656         struct vpbe_layer *layer = video_drvdata(file);
 657         struct vpbe_display *disp_dev = layer->disp_dev;
 658         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 659         struct osd_layer_config *cfg = &layer->layer_info.config;
 660         struct osd_state *osd_device = disp_dev->osd_device;
 661         struct v4l2_rect rect = crop->c;
 662         int ret;
 663
 664         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 665                 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
 666
 667         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 668                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 669                 return -EINVAL;
 670         }
 671
 672         if (rect.top < 0)
 673                 rect.top = 0;
 674         if (rect.left < 0)
 675                 rect.left = 0;
 676
 677         vpbe_disp_check_window_params(disp_dev, &rect);
 678
 679         osd_device->ops.get_layer_config(osd_device,
 680                         layer->layer_info.id, cfg);
 681
 682         vpbe_disp_calculate_scale_factor(disp_dev, layer,
 683                                         rect.width,
 684                                         rect.height);
 685         vpbe_disp_adj_position(disp_dev, layer, rect.top,
 686                                         rect.left);
 687         ret = osd_device->ops.set_layer_config(osd_device,
 688                                 layer->layer_info.id, cfg);
 689         if (ret < 0) {
 690                 v4l2_err(&vpbe_dev->v4l2_dev,
 691                         "Error in set layer config:\n");
 692                 return -EINVAL;
 693         }
 694
 695         /* apply zooming and h or v expansion */
 696         osd_device->ops.set_zoom(osd_device,
 697                         layer->layer_info.id,
 698                         layer->layer_info.h_zoom,
 699                         layer->layer_info.v_zoom);
 700         ret = osd_device->ops.set_vid_expansion(osd_device,
 701                         layer->layer_info.h_exp,
 702                         layer->layer_info.v_exp);
 703         if (ret < 0) {
 704                 v4l2_err(&vpbe_dev->v4l2_dev,
 705                 "Error in set vid expansion:\n");
 706                 return -EINVAL;
 707         }
 708
 709         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
 710                 (layer->layer_info.v_zoom != ZOOM_X1) ||
 711                 (layer->layer_info.h_exp != H_EXP_OFF) ||
 712                 (layer->layer_info.v_exp != V_EXP_OFF))
 713                 /* Enable expansion filter */
 714                 osd_device->ops.set_interpolation_filter(osd_device, 1);
 715         else
 716                 osd_device->ops.set_interpolation_filter(osd_device, 0);
 717
 718         return 0;
 719 }
 720
 721 static int vpbe_display_g_crop(struct file *file, void *priv,
 722                              struct v4l2_crop *crop)
 723 {
 724         struct vpbe_layer *layer = video_drvdata(file);
 725         struct osd_layer_config *cfg = &layer->layer_info.config;
 726         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 727         struct osd_state *osd_device = layer->disp_dev->osd_device;
 728         struct v4l2_rect *rect = &crop->c;
 729
 730         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 731                         "VIDIOC_G_CROP, layer id = %d\n",
 732                         layer->device_id);
 733
 734         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
 735                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
 736                 return -EINVAL;
 737         }
 738         osd_device->ops.get_layer_config(osd_device,
 739                                 layer->layer_info.id, cfg);
 740         rect->top = cfg->ypos;
 741         rect->left = cfg->xpos;
 742         rect->width = cfg->xsize;
 743         rect->height = cfg->ysize;
 744
 745         return 0;
 746 }
 747
 748 static int vpbe_display_cropcap(struct file *file, void *priv,
 749                               struct v4l2_cropcap *cropcap)
 750 {
 751         struct vpbe_layer *layer = video_drvdata(file);
 752         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 753
 754         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
 755
 756         cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 757         cropcap->bounds.left = 0;
 758         cropcap->bounds.top = 0;
 759         cropcap->bounds.width = vpbe_dev->current_timings.xres;
 760         cropcap->bounds.height = vpbe_dev->current_timings.yres;
 761         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
 762         cropcap->defrect = cropcap->bounds;
 763         return 0;
 764 }
 765
 766 static int vpbe_display_g_fmt(struct file *file, void *priv,
 767                                 struct v4l2_format *fmt)
 768 {
 769         struct vpbe_layer *layer = video_drvdata(file);
 770         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 771
 772         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 773                         "VIDIOC_G_FMT, layer id = %d\n",
 774                         layer->device_id);
 775
 776         /* If buffer type is video output */
 777         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 778                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 779                 return -EINVAL;
 780         }
 781         /* Fill in the information about format */
 782         fmt->fmt.pix = layer->pix_fmt;
 783
 784         return 0;
 785 }
 786
 787 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
 788                                    struct v4l2_fmtdesc *fmt)
 789 {
 790         struct vpbe_layer *layer = video_drvdata(file);
 791         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 792         unsigned int index = 0;
 793
 794         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 795                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
 796                                 layer->device_id);
 797         if (fmt->index > 1) {
 798                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
 799                 return -EINVAL;
 800         }
 801
 802         /* Fill in the information about format */
 803         index = fmt->index;
 804         memset(fmt, 0, sizeof(*fmt));
 805         fmt->index = index;
 806         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 807         if (index == 0) {
 808                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
 809                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
 810         } else {
 811                 strcpy(fmt->description, "Y/CbCr 4:2:0");
 812                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
 813         }
 814
 815         return 0;
 816 }
 817
 818 static int vpbe_display_s_fmt(struct file *file, void *priv,
 819                                 struct v4l2_format *fmt)
 820 {
 821         struct vpbe_layer *layer = video_drvdata(file);
 822         struct vpbe_display *disp_dev = layer->disp_dev;
 823         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 824         struct osd_layer_config *cfg  = &layer->layer_info.config;
 825         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 826         struct osd_state *osd_device = disp_dev->osd_device;
 827         int ret;
 828
 829         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 830                         "VIDIOC_S_FMT, layer id = %d\n",
 831                         layer->device_id);
 832
 833         if (vb2_is_busy(&layer->buffer_queue))
 834                 return -EBUSY;
 835
 836         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 837                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
 838                 return -EINVAL;
 839         }
 840         /* Check for valid pixel format */
 841         ret = vpbe_try_format(disp_dev, pixfmt, 1);
 842         if (ret)
 843                 return ret;
 844
 845         /* YUV420 is requested, check availability of the
 846         other video window */
 847
 848         layer->pix_fmt = *pixfmt;
 849         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
 850                 struct vpbe_layer *otherlayer;
 851
 852                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
 853                 /* if other layer is available, only
 854                  * claim it, do not configure it
 855                  */
 856                 ret = osd_device->ops.request_layer(osd_device,
 857                                                     otherlayer->layer_info.id);
 858                 if (ret < 0) {
 859                         v4l2_err(&vpbe_dev->v4l2_dev,
 860                                  "Display Manager failed to allocate layer\n");
 861                         return -EBUSY;
 862                 }
 863         }
 864
 865         /* Get osd layer config */
 866         osd_device->ops.get_layer_config(osd_device,
 867                         layer->layer_info.id, cfg);
 868         /* Store the pixel format in the layer object */
 869         cfg->xsize = pixfmt->width;
 870         cfg->ysize = pixfmt->height;
 871         cfg->line_length = pixfmt->bytesperline;
 872         cfg->ypos = 0;
 873         cfg->xpos = 0;
 874         cfg->interlaced = vpbe_dev->current_timings.interlaced;
 875
 876         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
 877                 cfg->pixfmt = PIXFMT_YCBCRI;
 878
 879         /* Change of the default pixel format for both video windows */
 880         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
 881                 struct vpbe_layer *otherlayer;
 882                 cfg->pixfmt = PIXFMT_NV12;
 883                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
 884                                                                 layer);
 885                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
 886         }
 887
 888         /* Set the layer config in the osd window */
 889         ret = osd_device->ops.set_layer_config(osd_device,
 890                                 layer->layer_info.id, cfg);
 891         if (ret < 0) {
 892                 v4l2_err(&vpbe_dev->v4l2_dev,
 893                                 "Error in S_FMT params:\n");
 894                 return -EINVAL;
 895         }
 896
 897         /* Readback and fill the local copy of current pix format */
 898         osd_device->ops.get_layer_config(osd_device,
 899                         layer->layer_info.id, cfg);
 900
 901         return 0;
 902 }
 903
 904 static int vpbe_display_try_fmt(struct file *file, void *priv,
 905                                   struct v4l2_format *fmt)
 906 {
 907         struct vpbe_layer *layer = video_drvdata(file);
 908         struct vpbe_display *disp_dev = layer->disp_dev;
 909         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 910         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 911
 912         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
 913
 914         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 915                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 916                 return -EINVAL;
 917         }
 918
 919         /* Check for valid field format */
 920         return  vpbe_try_format(disp_dev, pixfmt, 0);
 921
 922 }
 923
 924 /**
 925  * vpbe_display_s_std - Set the given standard in the encoder
 926  *
 927  * Sets the standard if supported by the current encoder. Return the status.
 928  * 0 - success & -EINVAL on error
 929  */
 930 static int vpbe_display_s_std(struct file *file, void *priv,
 931                                 v4l2_std_id std_id)
 932 {
 933         struct vpbe_layer *layer = video_drvdata(file);
 934         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 935         int ret;
 936
 937         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
 938
 939         if (vb2_is_busy(&layer->buffer_queue))
 940                 return -EBUSY;
 941
 942         if (NULL != vpbe_dev->ops.s_std) {
 943                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
 944                 if (ret) {
 945                         v4l2_err(&vpbe_dev->v4l2_dev,
 946                         "Failed to set standard for sub devices\n");
 947                         return -EINVAL;
 948                 }
 949         } else {
 950                 return -EINVAL;
 951         }
 952
 953         return 0;
 954 }
 955
 956 /**
 957  * vpbe_display_g_std - Get the standard in the current encoder
 958  *
 959  * Get the standard in the current encoder. Return the status. 0 - success
 960  * -EINVAL on error
 961  */
 962 static int vpbe_display_g_std(struct file *file, void *priv,
 963                                 v4l2_std_id *std_id)
 964 {
 965         struct vpbe_layer *layer = video_drvdata(file);
 966         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 967
 968         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
 969
 970         /* Get the standard from the current encoder */
 971         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
 972                 *std_id = vpbe_dev->current_timings.std_id;
 973                 return 0;
 974         }
 975
 976         return -EINVAL;
 977 }
 978
 979 /**
 980  * vpbe_display_enum_output - enumerate outputs
 981  *
 982  * Enumerates the outputs available at the vpbe display
 983  * returns the status, -EINVAL if end of output list
 984  */
 985 static int vpbe_display_enum_output(struct file *file, void *priv,
 986                                     struct v4l2_output *output)
 987 {
 988         struct vpbe_layer *layer = video_drvdata(file);
 989         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 990         int ret;
 991
 992         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
 993
 994         /* Enumerate outputs */
 995
 996         if (NULL == vpbe_dev->ops.enum_outputs)
 997                 return -EINVAL;
 998
 999         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1000         if (ret) {
1001                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1002                         "Failed to enumerate outputs\n");
1003                 return -EINVAL;
1004         }
1005
1006         return 0;
1007 }
1008
1009 /**
1010  * vpbe_display_s_output - Set output to
1011  * the output specified by the index
1012  */
1013 static int vpbe_display_s_output(struct file *file, void *priv,
1014                                 unsigned int i)
1015 {
1016         struct vpbe_layer *layer = video_drvdata(file);
1017         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1018         int ret;
1019
1020         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1021
1022         if (vb2_is_busy(&layer->buffer_queue))
1023                 return -EBUSY;
1024
1025         if (NULL == vpbe_dev->ops.set_output)
1026                 return -EINVAL;
1027
1028         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1029         if (ret) {
1030                 v4l2_err(&vpbe_dev->v4l2_dev,
1031                         "Failed to set output for sub devices\n");
1032                 return -EINVAL;
1033         }
1034
1035         return 0;
1036 }
1037
1038 /**
1039  * vpbe_display_g_output - Get output from subdevice
1040  * for a given by the index
1041  */
1042 static int vpbe_display_g_output(struct file *file, void *priv,
1043                                 unsigned int *i)
1044 {
1045         struct vpbe_layer *layer = video_drvdata(file);
1046         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1047
1048         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1049         /* Get the standard from the current encoder */
1050         *i = vpbe_dev->current_out_index;
1051
1052         return 0;
1053 }
1054
1055 /**
1056  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1057  *
1058  * enum the timings in the current encoder. Return the status. 0 - success
1059  * -EINVAL on error
1060  */
1061 static int
1062 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1063                         struct v4l2_enum_dv_timings *timings)
1064 {
1065         struct vpbe_layer *layer = video_drvdata(file);
1066         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1067         int ret;
1068
1069         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1070
1071         /* Enumerate outputs */
1072         if (NULL == vpbe_dev->ops.enum_dv_timings)
1073                 return -EINVAL;
1074
1075         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1076         if (ret) {
1077                 v4l2_err(&vpbe_dev->v4l2_dev,
1078                         "Failed to enumerate dv timings info\n");
1079                 return -EINVAL;
1080         }
1081
1082         return 0;
1083 }
1084
1085 /**
1086  * vpbe_display_s_dv_timings - Set the dv timings
1087  *
1088  * Set the timings in the current encoder. Return the status. 0 - success
1089  * -EINVAL on error
1090  */
1091 static int
1092 vpbe_display_s_dv_timings(struct file *file, void *priv,
1093                                 struct v4l2_dv_timings *timings)
1094 {
1095         struct vpbe_layer *layer = video_drvdata(file);
1096         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1097         int ret;
1098
1099         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1100
1101         if (vb2_is_busy(&layer->buffer_queue))
1102                 return -EBUSY;
1103
1104         /* Set the given standard in the encoder */
1105         if (!vpbe_dev->ops.s_dv_timings)
1106                 return -EINVAL;
1107
1108         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1109         if (ret) {
1110                 v4l2_err(&vpbe_dev->v4l2_dev,
1111                         "Failed to set the dv timings info\n");
1112                 return -EINVAL;
1113         }
1114
1115         return 0;
1116 }
1117
1118 /**
1119  * vpbe_display_g_dv_timings - Set the dv timings
1120  *
1121  * Get the timings in the current encoder. Return the status. 0 - success
1122  * -EINVAL on error
1123  */
1124 static int
1125 vpbe_display_g_dv_timings(struct file *file, void *priv,
1126                                 struct v4l2_dv_timings *dv_timings)
1127 {
1128         struct vpbe_layer *layer = video_drvdata(file);
1129         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1130
1131         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1132
1133         /* Get the given standard in the encoder */
1134
1135         if (vpbe_dev->current_timings.timings_type &
1136                                 VPBE_ENC_DV_TIMINGS) {
1137                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1138         } else {
1139                 return -EINVAL;
1140         }
1141
1142         return 0;
1143 }
1144
1145 /*
1146  * vpbe_display_open()
1147  * It creates object of file handle structure and stores it in private_data
1148  * member of filepointer
1149  */
1150 static int vpbe_display_open(struct file *file)
1151 {
1152         struct vpbe_layer *layer = video_drvdata(file);
1153         struct vpbe_display *disp_dev = layer->disp_dev;
1154         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1155         struct osd_state *osd_device = disp_dev->osd_device;
1156         int err;
1157
1158         /* creating context for file descriptor */
1159         err = v4l2_fh_open(file);
1160         if (err) {
1161                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1162                 return err;
1163         }
1164
1165         /* leaving if layer is already initialized */
1166         if (!v4l2_fh_is_singular_file(file))
1167                 return err;
1168
1169         if (!layer->usrs) {
1170                 if (mutex_lock_interruptible(&layer->opslock))
1171                         return -ERESTARTSYS;
1172                 /* First claim the layer for this device */
1173                 err = osd_device->ops.request_layer(osd_device,
1174                                                 layer->layer_info.id);
1175                 mutex_unlock(&layer->opslock);
1176                 if (err < 0) {
1177                         /* Couldn't get layer */
1178                         v4l2_err(&vpbe_dev->v4l2_dev,
1179                                 "Display Manager failed to allocate layer\n");
1180                         v4l2_fh_release(file);
1181                         return -EINVAL;
1182                 }
1183         }
1184         /* Increment layer usrs counter */
1185         layer->usrs++;
1186         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1187                         "vpbe display device opened successfully\n");
1188         return 0;
1189 }
1190
1191 /*
1192  * vpbe_display_release()
1193  * This function deletes buffer queue, frees the buffers and the davinci
1194  * display file * handle
1195  */
1196 static int vpbe_display_release(struct file *file)
1197 {
1198         struct vpbe_layer *layer = video_drvdata(file);
1199         struct osd_layer_config *cfg  = &layer->layer_info.config;
1200         struct vpbe_display *disp_dev = layer->disp_dev;
1201         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1202         struct osd_state *osd_device = disp_dev->osd_device;
1203
1204         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1205
1206         mutex_lock(&layer->opslock);
1207
1208         osd_device->ops.disable_layer(osd_device,
1209                         layer->layer_info.id);
1210         /* Decrement layer usrs counter */
1211         layer->usrs--;
1212         /* If this file handle has initialize encoder device, reset it */
1213         if (!layer->usrs) {
1214                 if (cfg->pixfmt == PIXFMT_NV12) {
1215                         struct vpbe_layer *otherlayer;
1216                         otherlayer =
1217                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1218                         osd_device->ops.disable_layer(osd_device,
1219                                         otherlayer->layer_info.id);
1220                         osd_device->ops.release_layer(osd_device,
1221                                         otherlayer->layer_info.id);
1222                 }
1223                 osd_device->ops.disable_layer(osd_device,
1224                                 layer->layer_info.id);
1225                 osd_device->ops.release_layer(osd_device,
1226                                 layer->layer_info.id);
1227         }
1228
1229         _vb2_fop_release(file, NULL);
1230         mutex_unlock(&layer->opslock);
1231
1232         disp_dev->cbcr_ofst = 0;
1233
1234         return 0;
1235 }
1236
1237 /* vpbe capture ioctl operations */
1238 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1239         .vidioc_querycap         = vpbe_display_querycap,
1240         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1241         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1242         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1243         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1244
1245         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1246         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1247         .vidioc_querybuf         = vb2_ioctl_querybuf,
1248         .vidioc_qbuf             = vb2_ioctl_qbuf,
1249         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1250         .vidioc_streamon         = vb2_ioctl_streamon,
1251         .vidioc_streamoff        = vb2_ioctl_streamoff,
1252         .vidioc_expbuf           = vb2_ioctl_expbuf,
1253
1254         .vidioc_cropcap          = vpbe_display_cropcap,
1255         .vidioc_g_crop           = vpbe_display_g_crop,
1256         .vidioc_s_crop           = vpbe_display_s_crop,
1257
1258         .vidioc_s_std            = vpbe_display_s_std,
1259         .vidioc_g_std            = vpbe_display_g_std,
1260
1261         .vidioc_enum_output      = vpbe_display_enum_output,
1262         .vidioc_s_output         = vpbe_display_s_output,
1263         .vidioc_g_output         = vpbe_display_g_output,
1264
1265         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1266         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1267         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1268 };
1269
1270 static struct v4l2_file_operations vpbe_fops = {
1271         .owner = THIS_MODULE,
1272         .open = vpbe_display_open,
1273         .release = vpbe_display_release,
1274         .unlocked_ioctl = video_ioctl2,
1275         .mmap = vb2_fop_mmap,
1276         .poll =  vb2_fop_poll,
1277 };
1278
1279 static int vpbe_device_get(struct device *dev, void *data)
1280 {
1281         struct platform_device *pdev = to_platform_device(dev);
1282         struct vpbe_display *vpbe_disp  = data;
1283
1284         if (strcmp("vpbe_controller", pdev->name) == 0)
1285                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1286
1287         if (strstr(pdev->name, "vpbe-osd") != NULL)
1288                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1289
1290         return 0;
1291 }
1292
1293 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1294                            struct platform_device *pdev)
1295 {
1296         struct vpbe_layer *vpbe_display_layer = NULL;
1297         struct video_device *vbd = NULL;
1298
1299         /* Allocate memory for four plane display objects */
1300
1301         disp_dev->dev[i] =
1302                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1303
1304         /* If memory allocation fails, return error */
1305         if (!disp_dev->dev[i]) {
1306                 printk(KERN_ERR "ran out of memory\n");
1307                 return  -ENOMEM;
1308         }
1309         spin_lock_init(&disp_dev->dev[i]->irqlock);
1310         mutex_init(&disp_dev->dev[i]->opslock);
1311
1312         /* Get the pointer to the layer object */
1313         vpbe_display_layer = disp_dev->dev[i];
1314         vbd = &vpbe_display_layer->video_dev;
1315         /* Initialize field of video device */
1316         vbd->release    = video_device_release_empty;
1317         vbd->fops       = &vpbe_fops;
1318         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1319         vbd->minor      = -1;
1320         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1321         vbd->lock       = &vpbe_display_layer->opslock;
1322         vbd->vfl_dir    = VFL_DIR_TX;
1323
1324         if (disp_dev->vpbe_dev->current_timings.timings_type &
1325                         VPBE_ENC_STD)
1326                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1327
1328         snprintf(vbd->name, sizeof(vbd->name),
1329                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1330                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1331                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1332                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1333
1334         vpbe_display_layer->device_id = i;
1335
1336         vpbe_display_layer->layer_info.id =
1337                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1338
1339
1340         return 0;
1341 }
1342
1343 static int register_device(struct vpbe_layer *vpbe_display_layer,
1344                            struct vpbe_display *disp_dev,
1345                            struct platform_device *pdev)
1346 {
1347         int err;
1348
1349         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1350                   "Trying to register VPBE display device.\n");
1351         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1352                   "layer=%x,layer->video_dev=%x\n",
1353                   (int)vpbe_display_layer,
1354                   (int)&vpbe_display_layer->video_dev);
1355
1356         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1357         err = video_register_device(&vpbe_display_layer->video_dev,
1358                                     VFL_TYPE_GRABBER,
1359                                     -1);
1360         if (err)
1361                 return -ENODEV;
1362
1363         vpbe_display_layer->disp_dev = disp_dev;
1364         /* set the driver data in platform device */
1365         platform_set_drvdata(pdev, disp_dev);
1366         video_set_drvdata(&vpbe_display_layer->video_dev,
1367                           vpbe_display_layer);
1368
1369         return 0;
1370 }
1371
1372
1373
1374 /*
1375  * vpbe_display_probe()
1376  * This function creates device entries by register itself to the V4L2 driver
1377  * and initializes fields of each layer objects
1378  */
1379 static int vpbe_display_probe(struct platform_device *pdev)
1380 {
1381         struct vpbe_display *disp_dev;
1382         struct v4l2_device *v4l2_dev;
1383         struct resource *res = NULL;
1384         struct vb2_queue *q;
1385         int k;
1386         int i;
1387         int err;
1388         int irq;
1389
1390         printk(KERN_DEBUG "vpbe_display_probe\n");
1391         /* Allocate memory for vpbe_display */
1392         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1393                                 GFP_KERNEL);
1394         if (!disp_dev)
1395                 return -ENOMEM;
1396
1397         spin_lock_init(&disp_dev->dma_queue_lock);
1398         /*
1399          * Scan all the platform devices to find the vpbe
1400          * controller device and get the vpbe_dev object
1401          */
1402         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1403                         vpbe_device_get);
1404         if (err < 0)
1405                 return err;
1406
1407         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1408         /* Initialize the vpbe display controller */
1409         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1410                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1411                                                          disp_dev->vpbe_dev);
1412                 if (err) {
1413                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1414                         err = -ENOMEM;
1415                         goto probe_out;
1416                 }
1417         }
1418
1419         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1420                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1421                         err = -ENODEV;
1422                         goto probe_out;
1423                 }
1424         }
1425
1426         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1427         if (!res) {
1428                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1429                 err = -ENODEV;
1430                 goto probe_out;
1431         }
1432
1433         irq = res->start;
1434         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1435                                VPBE_DISPLAY_DRIVER, disp_dev);
1436         if (err) {
1437                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1438                 goto probe_out;
1439         }
1440
1441         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1442                 /* initialize vb2 queue */
1443                 q = &disp_dev->dev[i]->buffer_queue;
1444                 memset(q, 0, sizeof(*q));
1445                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1446                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1447                 q->drv_priv = disp_dev->dev[i];
1448                 q->ops = &video_qops;
1449                 q->mem_ops = &vb2_dma_contig_memops;
1450                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1451                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1452                 q->min_buffers_needed = 1;
1453                 q->lock = &disp_dev->dev[i]->opslock;
1454                 err = vb2_queue_init(q);
1455                 if (err) {
1456                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1457                         goto probe_out;
1458                 }
1459
1460                 disp_dev->dev[i]->alloc_ctx =
1461                         vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev);
1462                 if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) {
1463                         v4l2_err(v4l2_dev, "Failed to get the context\n");
1464                         err = PTR_ERR(disp_dev->dev[i]->alloc_ctx);
1465                         goto probe_out;
1466                 }
1467
1468                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1469
1470                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1471                         err = -ENODEV;
1472                         goto probe_out;
1473                 }
1474         }
1475
1476         v4l2_dbg(1, debug, v4l2_dev,
1477                  "Successfully completed the probing of vpbe v4l2 device\n");
1478
1479         return 0;
1480
1481 probe_out:
1482         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1483                 /* Unregister video device */
1484                 if (disp_dev->dev[k] != NULL) {
1485                         vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx);
1486                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1487                         kfree(disp_dev->dev[k]);
1488                 }
1489         }
1490         return err;
1491 }
1492
1493 /*
1494  * vpbe_display_remove()
1495  * It un-register hardware layer from V4L2 driver
1496  */
1497 static int vpbe_display_remove(struct platform_device *pdev)
1498 {
1499         struct vpbe_layer *vpbe_display_layer;
1500         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1501         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1502         int i;
1503
1504         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1505
1506         /* deinitialize the vpbe display controller */
1507         if (NULL != vpbe_dev->ops.deinitialize)
1508                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1509         /* un-register device */
1510         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1511                 /* Get the pointer to the layer object */
1512                 vpbe_display_layer = disp_dev->dev[i];
1513                 vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx);
1514                 /* Unregister video device */
1515                 video_unregister_device(&vpbe_display_layer->video_dev);
1516
1517         }
1518         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1519                 kfree(disp_dev->dev[i]);
1520                 disp_dev->dev[i] = NULL;
1521         }
1522
1523         return 0;
1524 }
1525
1526 static struct platform_driver vpbe_display_driver = {
1527         .driver = {
1528                 .name = VPBE_DISPLAY_DRIVER,
1529                 .bus = &platform_bus_type,
1530         },
1531         .probe = vpbe_display_probe,
1532         .remove = vpbe_display_remove,
1533 };
1534
1535 module_platform_driver(vpbe_display_driver);
1536
1537 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1538 MODULE_LICENSE("GPL");
1539 MODULE_AUTHOR("Texas Instruments");