drivers/media/platform/davinci/vpbe_display.c

   1 /*
   2  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation version 2.
   7  *
   8  * This program is distributed WITHOUT ANY WARRANTY of any
   9  * kind, whether express or implied; without even the implied warranty
  10  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/module.h>
  16 #include <linux/errno.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/string.h>
  19 #include <linux/wait.h>
  20 #include <linux/time.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/irq.h>
  23 #include <linux/mm.h>
  24 #include <linux/mutex.h>
  25 #include <linux/videodev2.h>
  26 #include <linux/slab.h>
  27
  28 #include <asm/pgtable.h>
  29 #include <mach/cputype.h>
  30
  31 #include <media/v4l2-dev.h>
  32 #include <media/v4l2-common.h>
  33 #include <media/v4l2-ioctl.h>
  34 #include <media/v4l2-device.h>
  35 #include <media/davinci/vpbe_display.h>
  36 #include <media/davinci/vpbe_types.h>
  37 #include <media/davinci/vpbe.h>
  38 #include <media/davinci/vpbe_venc.h>
  39 #include <media/davinci/vpbe_osd.h>
  40 #include "vpbe_venc_regs.h"
  41
  42 #define VPBE_DISPLAY_DRIVER "vpbe-v4l2"
  43
  44 static int debug;
  45
  46 #define VPBE_DEFAULT_NUM_BUFS 3
  47
  48 module_param(debug, int, 0644);
  49
  50 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
  51                         struct vpbe_layer *layer);
  52
  53 static int venc_is_second_field(struct vpbe_display *disp_dev)
  54 {
  55         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
  56         int ret;
  57         int val;
  58
  59         ret = v4l2_subdev_call(vpbe_dev->venc,
  60                                core,
  61                                ioctl,
  62                                VENC_GET_FLD,
  63                                &val);
  64         if (ret < 0) {
  65                 v4l2_err(&vpbe_dev->v4l2_dev,
  66                          "Error in getting Field ID 0\n");
  67         }
  68         return val;
  69 }
  70
  71 static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
  72                                 struct vpbe_layer *layer)
  73 {
  74         if (layer->cur_frm == layer->next_frm)
  75                 return;
  76
  77         layer->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
  78         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
  79         /* Make cur_frm pointing to next_frm */
  80         layer->cur_frm = layer->next_frm;
  81 }
  82
  83 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
  84                                 struct vpbe_layer *layer)
  85 {
  86         struct osd_state *osd_device = disp_obj->osd_device;
  87         unsigned long addr;
  88
  89         spin_lock(&disp_obj->dma_queue_lock);
  90         if (list_empty(&layer->dma_queue) ||
  91                 (layer->cur_frm != layer->next_frm)) {
  92                 spin_unlock(&disp_obj->dma_queue_lock);
  93                 return;
  94         }
  95         /*
  96          * one field is displayed configure
  97          * the next frame if it is available
  98          * otherwise hold on current frame
  99          * Get next from the buffer queue
 100          */
 101         layer->next_frm = list_entry(layer->dma_queue.next,
 102                           struct  vpbe_disp_buffer, list);
 103         /* Remove that from the buffer queue */
 104         list_del(&layer->next_frm->list);
 105         spin_unlock(&disp_obj->dma_queue_lock);
 106         /* Mark state of the frame to active */
 107         layer->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
 108         addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb.vb2_buf, 0);
 109         osd_device->ops.start_layer(osd_device,
 110                         layer->layer_info.id,
 111                         addr,
 112                         disp_obj->cbcr_ofst);
 113 }
 114
 115 /* interrupt service routine */
 116 static irqreturn_t venc_isr(int irq, void *arg)
 117 {
 118         struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
 119         struct vpbe_layer *layer;
 120         static unsigned last_event;
 121         unsigned event = 0;
 122         int fid;
 123         int i;
 124
 125         if ((NULL == arg) || (NULL == disp_dev->dev[0]))
 126                 return IRQ_HANDLED;
 127
 128         if (venc_is_second_field(disp_dev))
 129                 event |= VENC_SECOND_FIELD;
 130         else
 131                 event |= VENC_FIRST_FIELD;
 132
 133         if (event == (last_event & ~VENC_END_OF_FRAME)) {
 134                 /*
 135                 * If the display is non-interlaced, then we need to flag the
 136                 * end-of-frame event at every interrupt regardless of the
 137                 * value of the FIDST bit.  We can conclude that the display is
 138                 * non-interlaced if the value of the FIDST bit is unchanged
 139                 * from the previous interrupt.
 140                 */
 141                 event |= VENC_END_OF_FRAME;
 142         } else if (event == VENC_SECOND_FIELD) {
 143                 /* end-of-frame for interlaced display */
 144                 event |= VENC_END_OF_FRAME;
 145         }
 146         last_event = event;
 147
 148         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
 149                 layer = disp_dev->dev[i];
 150
 151                 if (!vb2_start_streaming_called(&layer->buffer_queue))
 152                         continue;
 153
 154                 if (layer->layer_first_int) {
 155                         layer->layer_first_int = 0;
 156                         continue;
 157                 }
 158                 /* Check the field format */
 159                 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
 160                         (event & VENC_END_OF_FRAME)) {
 161                         /* Progressive mode */
 162
 163                         vpbe_isr_even_field(disp_dev, layer);
 164                         vpbe_isr_odd_field(disp_dev, layer);
 165                 } else {
 166                 /* Interlaced mode */
 167
 168                         layer->field_id ^= 1;
 169                         if (event & VENC_FIRST_FIELD)
 170                                 fid = 0;
 171                         else
 172                                 fid = 1;
 173
 174                         /*
 175                         * If field id does not match with store
 176                         * field id
 177                         */
 178                         if (fid != layer->field_id) {
 179                                 /* Make them in sync */
 180                                 layer->field_id = fid;
 181                                 continue;
 182                         }
 183                         /*
 184                         * device field id and local field id are
 185                         * in sync. If this is even field
 186                         */
 187                         if (0 == fid)
 188                                 vpbe_isr_even_field(disp_dev, layer);
 189                         else  /* odd field */
 190                                 vpbe_isr_odd_field(disp_dev, layer);
 191                 }
 192         }
 193
 194         return IRQ_HANDLED;
 195 }
 196
 197 /*
 198  * vpbe_buffer_prepare()
 199  * This is the callback function called from vb2_qbuf() function
 200  * the buffer is prepared and user space virtual address is converted into
 201  * physical address
 202  */
 203 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
 204 {
 205         struct vb2_queue *q = vb->vb2_queue;
 206         struct vpbe_layer *layer = vb2_get_drv_priv(q);
 207         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 208         unsigned long addr;
 209
 210         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 211                                 "vpbe_buffer_prepare\n");
 212
 213         vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
 214         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
 215                 return -EINVAL;
 216
 217         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
 218         if (!IS_ALIGNED(addr, 8)) {
 219                 v4l2_err(&vpbe_dev->v4l2_dev,
 220                          "buffer_prepare:offset is not aligned to 32 bytes\n");
 221                 return -EINVAL;
 222         }
 223         return 0;
 224 }
 225
 226 /*
 227  * vpbe_buffer_setup()
 228  * This function allocates memory for the buffers
 229  */
 230 static int
 231 vpbe_buffer_queue_setup(struct vb2_queue *vq,
 232                         unsigned int *nbuffers, unsigned int *nplanes,
 233                         unsigned int sizes[], struct device *alloc_devs[])
 234
 235 {
 236         /* Get the file handle object and layer object */
 237         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 238         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 239
 240         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
 241
 242         /* Store number of buffers allocated in numbuffer member */
 243         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
 244                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
 245
 246         if (*nplanes)
 247                 return sizes[0] < layer->pix_fmt.sizeimage ? -EINVAL : 0;
 248
 249         *nplanes = 1;
 250         sizes[0] = layer->pix_fmt.sizeimage;
 251
 252         return 0;
 253 }
 254
 255 /*
 256  * vpbe_buffer_queue()
 257  * This function adds the buffer to DMA queue
 258  */
 259 static void vpbe_buffer_queue(struct vb2_buffer *vb)
 260 {
 261         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 262         /* Get the file handle object and layer object */
 263         struct vpbe_disp_buffer *buf = container_of(vbuf,
 264                                 struct vpbe_disp_buffer, vb);
 265         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
 266         struct vpbe_display *disp = layer->disp_dev;
 267         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 268         unsigned long flags;
 269
 270         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 271                         "vpbe_buffer_queue\n");
 272
 273         /* add the buffer to the DMA queue */
 274         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 275         list_add_tail(&buf->list, &layer->dma_queue);
 276         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 277 }
 278
 279 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
 280 {
 281         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 282         struct osd_state *osd_device = layer->disp_dev->osd_device;
 283         int ret;
 284
 285          osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 286
 287         /* Get the next frame from the buffer queue */
 288         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
 289                                 struct vpbe_disp_buffer, list);
 290         /* Remove buffer from the buffer queue */
 291         list_del(&layer->cur_frm->list);
 292         /* Mark state of the current frame to active */
 293         layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
 294         /* Initialize field_id and started member */
 295         layer->field_id = 0;
 296
 297         /* Set parameters in OSD and VENC */
 298         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
 299         if (ret < 0) {
 300                 struct vpbe_disp_buffer *buf, *tmp;
 301
 302                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 303                                 VB2_BUF_STATE_QUEUED);
 304                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
 305                         list_del(&buf->list);
 306                         vb2_buffer_done(&buf->vb.vb2_buf,
 307                                         VB2_BUF_STATE_QUEUED);
 308                 }
 309
 310                 return ret;
 311         }
 312
 313         /*
 314          * if request format is yuv420 semiplanar, need to
 315          * enable both video windows
 316          */
 317         layer->layer_first_int = 1;
 318
 319         return ret;
 320 }
 321
 322 static void vpbe_stop_streaming(struct vb2_queue *vq)
 323 {
 324         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
 325         struct osd_state *osd_device = layer->disp_dev->osd_device;
 326         struct vpbe_display *disp = layer->disp_dev;
 327         unsigned long flags;
 328
 329         if (!vb2_is_streaming(vq))
 330                 return;
 331
 332         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
 333
 334         /* release all active buffers */
 335         spin_lock_irqsave(&disp->dma_queue_lock, flags);
 336         if (layer->cur_frm == layer->next_frm) {
 337                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 338                                 VB2_BUF_STATE_ERROR);
 339         } else {
 340                 if (layer->cur_frm != NULL)
 341                         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
 342                                         VB2_BUF_STATE_ERROR);
 343                 if (layer->next_frm != NULL)
 344                         vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 345                                         VB2_BUF_STATE_ERROR);
 346         }
 347
 348         while (!list_empty(&layer->dma_queue)) {
 349                 layer->next_frm = list_entry(layer->dma_queue.next,
 350                                                 struct vpbe_disp_buffer, list);
 351                 list_del(&layer->next_frm->list);
 352                 vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
 353                                 VB2_BUF_STATE_ERROR);
 354         }
 355         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
 356 }
 357
 358 static struct vb2_ops video_qops = {
 359         .queue_setup = vpbe_buffer_queue_setup,
 360         .wait_prepare = vb2_ops_wait_prepare,
 361         .wait_finish = vb2_ops_wait_finish,
 362         .buf_prepare = vpbe_buffer_prepare,
 363         .start_streaming = vpbe_start_streaming,
 364         .stop_streaming = vpbe_stop_streaming,
 365         .buf_queue = vpbe_buffer_queue,
 366 };
 367
 368 static
 369 struct vpbe_layer*
 370 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
 371                         struct vpbe_layer *layer)
 372 {
 373         enum vpbe_display_device_id thiswin, otherwin;
 374         thiswin = layer->device_id;
 375
 376         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
 377         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
 378         return disp_dev->dev[otherwin];
 379 }
 380
 381 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
 382                         struct vpbe_layer *layer)
 383 {
 384         struct osd_layer_config *cfg  = &layer->layer_info.config;
 385         struct osd_state *osd_device = disp_dev->osd_device;
 386         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 387         unsigned long addr;
 388         int ret;
 389
 390         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
 391         /* Set address in the display registers */
 392         osd_device->ops.start_layer(osd_device,
 393                                     layer->layer_info.id,
 394                                     addr,
 395                                     disp_dev->cbcr_ofst);
 396
 397         ret = osd_device->ops.enable_layer(osd_device,
 398                                 layer->layer_info.id, 0);
 399         if (ret < 0) {
 400                 v4l2_err(&vpbe_dev->v4l2_dev,
 401                         "Error in enabling osd window layer 0\n");
 402                 return -1;
 403         }
 404
 405         /* Enable the window */
 406         layer->layer_info.enable = 1;
 407         if (cfg->pixfmt == PIXFMT_NV12) {
 408                 struct vpbe_layer *otherlayer =
 409                         _vpbe_display_get_other_win_layer(disp_dev, layer);
 410
 411                 ret = osd_device->ops.enable_layer(osd_device,
 412                                 otherlayer->layer_info.id, 1);
 413                 if (ret < 0) {
 414                         v4l2_err(&vpbe_dev->v4l2_dev,
 415                                 "Error in enabling osd window layer 1\n");
 416                         return -1;
 417                 }
 418                 otherlayer->layer_info.enable = 1;
 419         }
 420         return 0;
 421 }
 422
 423 static void
 424 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
 425                         struct vpbe_layer *layer,
 426                         int expected_xsize, int expected_ysize)
 427 {
 428         struct display_layer_info *layer_info = &layer->layer_info;
 429         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
 430         struct osd_layer_config *cfg  = &layer->layer_info.config;
 431         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 432         int calculated_xsize;
 433         int h_exp = 0;
 434         int v_exp = 0;
 435         int h_scale;
 436         int v_scale;
 437
 438         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
 439
 440         /*
 441          * Application initially set the image format. Current display
 442          * size is obtained from the vpbe display controller. expected_xsize
 443          * and expected_ysize are set through S_SELECTION ioctl. Based on this,
 444          * driver will calculate the scale factors for vertical and
 445          * horizontal direction so that the image is displayed scaled
 446          * and expanded. Application uses expansion to display the image
 447          * in a square pixel. Otherwise it is displayed using displays
 448          * pixel aspect ratio.It is expected that application chooses
 449          * the crop coordinates for cropped or scaled display. if crop
 450          * size is less than the image size, it is displayed cropped or
 451          * it is displayed scaled and/or expanded.
 452          *
 453          * to begin with, set the crop window same as expected. Later we
 454          * will override with scaled window size
 455          */
 456
 457         cfg->xsize = pixfmt->width;
 458         cfg->ysize = pixfmt->height;
 459         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
 460         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
 461         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
 462         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
 463
 464         if (pixfmt->width < expected_xsize) {
 465                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
 466                 if (h_scale < 2)
 467                         h_scale = 1;
 468                 else if (h_scale >= 4)
 469                         h_scale = 4;
 470                 else
 471                         h_scale = 2;
 472                 cfg->xsize *= h_scale;
 473                 if (cfg->xsize < expected_xsize) {
 474                         if ((standard_id & V4L2_STD_525_60) ||
 475                         (standard_id & V4L2_STD_625_50)) {
 476                                 calculated_xsize = (cfg->xsize *
 477                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
 478                                         VPBE_DISPLAY_H_EXP_RATIO_D;
 479                                 if (calculated_xsize <= expected_xsize) {
 480                                         h_exp = 1;
 481                                         cfg->xsize = calculated_xsize;
 482                                 }
 483                         }
 484                 }
 485                 if (h_scale == 2)
 486                         layer_info->h_zoom = ZOOM_X2;
 487                 else if (h_scale == 4)
 488                         layer_info->h_zoom = ZOOM_X4;
 489                 if (h_exp)
 490                         layer_info->h_exp = H_EXP_9_OVER_8;
 491         } else {
 492                 /* no scaling, only cropping. Set display area to crop area */
 493                 cfg->xsize = expected_xsize;
 494         }
 495
 496         if (pixfmt->height < expected_ysize) {
 497                 v_scale = expected_ysize / pixfmt->height;
 498                 if (v_scale < 2)
 499                         v_scale = 1;
 500                 else if (v_scale >= 4)
 501                         v_scale = 4;
 502                 else
 503                         v_scale = 2;
 504                 cfg->ysize *= v_scale;
 505                 if (cfg->ysize < expected_ysize) {
 506                         if ((standard_id & V4L2_STD_625_50)) {
 507                                 calculated_xsize = (cfg->ysize *
 508                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
 509                                         VPBE_DISPLAY_V_EXP_RATIO_D;
 510                                 if (calculated_xsize <= expected_ysize) {
 511                                         v_exp = 1;
 512                                         cfg->ysize = calculated_xsize;
 513                                 }
 514                         }
 515                 }
 516                 if (v_scale == 2)
 517                         layer_info->v_zoom = ZOOM_X2;
 518                 else if (v_scale == 4)
 519                         layer_info->v_zoom = ZOOM_X4;
 520                 if (v_exp)
 521                         layer_info->h_exp = V_EXP_6_OVER_5;
 522         } else {
 523                 /* no scaling, only cropping. Set display area to crop area */
 524                 cfg->ysize = expected_ysize;
 525         }
 526         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 527                 "crop display xsize = %d, ysize = %d\n",
 528                 cfg->xsize, cfg->ysize);
 529 }
 530
 531 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
 532                         struct vpbe_layer *layer,
 533                         int top, int left)
 534 {
 535         struct osd_layer_config *cfg = &layer->layer_info.config;
 536         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 537
 538         cfg->xpos = min((unsigned int)left,
 539                         vpbe_dev->current_timings.xres - cfg->xsize);
 540         cfg->ypos = min((unsigned int)top,
 541                         vpbe_dev->current_timings.yres - cfg->ysize);
 542
 543         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 544                 "new xpos = %d, ypos = %d\n",
 545                 cfg->xpos, cfg->ypos);
 546 }
 547
 548 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
 549                         struct v4l2_rect *c)
 550 {
 551         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 552
 553         if ((c->width == 0) ||
 554           ((c->width + c->left) > vpbe_dev->current_timings.xres))
 555                 c->width = vpbe_dev->current_timings.xres - c->left;
 556
 557         if ((c->height == 0) || ((c->height + c->top) >
 558           vpbe_dev->current_timings.yres))
 559                 c->height = vpbe_dev->current_timings.yres - c->top;
 560
 561         /* window height must be even for interlaced display */
 562         if (vpbe_dev->current_timings.interlaced)
 563                 c->height &= (~0x01);
 564
 565 }
 566
 567 /**
 568  * vpbe_try_format()
 569  * If user application provides width and height, and have bytesperline set
 570  * to zero, driver calculates bytesperline and sizeimage based on hardware
 571  * limits.
 572  */
 573 static int vpbe_try_format(struct vpbe_display *disp_dev,
 574                         struct v4l2_pix_format *pixfmt, int check)
 575 {
 576         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 577         int min_height = 1;
 578         int min_width = 32;
 579         int max_height;
 580         int max_width;
 581         int bpp;
 582
 583         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
 584             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
 585                 /* choose default as V4L2_PIX_FMT_UYVY */
 586                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
 587
 588         /* Check the field format */
 589         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
 590                 (pixfmt->field != V4L2_FIELD_NONE)) {
 591                 if (vpbe_dev->current_timings.interlaced)
 592                         pixfmt->field = V4L2_FIELD_INTERLACED;
 593                 else
 594                         pixfmt->field = V4L2_FIELD_NONE;
 595         }
 596
 597         if (pixfmt->field == V4L2_FIELD_INTERLACED)
 598                 min_height = 2;
 599
 600         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 601                 bpp = 1;
 602         else
 603                 bpp = 2;
 604
 605         max_width = vpbe_dev->current_timings.xres;
 606         max_height = vpbe_dev->current_timings.yres;
 607
 608         min_width /= bpp;
 609
 610         if (!pixfmt->width || (pixfmt->width < min_width) ||
 611                 (pixfmt->width > max_width)) {
 612                 pixfmt->width = vpbe_dev->current_timings.xres;
 613         }
 614
 615         if (!pixfmt->height || (pixfmt->height  < min_height) ||
 616                 (pixfmt->height  > max_height)) {
 617                 pixfmt->height = vpbe_dev->current_timings.yres;
 618         }
 619
 620         if (pixfmt->bytesperline < (pixfmt->width * bpp))
 621                 pixfmt->bytesperline = pixfmt->width * bpp;
 622
 623         /* Make the bytesperline 32 byte aligned */
 624         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
 625
 626         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
 627                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
 628                                 (pixfmt->bytesperline * pixfmt->height >> 1);
 629         else
 630                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
 631
 632         return 0;
 633 }
 634
 635 static int vpbe_display_querycap(struct file *file, void  *priv,
 636                                struct v4l2_capability *cap)
 637 {
 638         struct vpbe_layer *layer = video_drvdata(file);
 639         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 640
 641         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
 642         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 643         snprintf(cap->driver, sizeof(cap->driver), "%s",
 644                 dev_name(vpbe_dev->pdev));
 645         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 646                  dev_name(vpbe_dev->pdev));
 647         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
 648
 649         return 0;
 650 }
 651
 652 static int vpbe_display_s_selection(struct file *file, void *priv,
 653                              struct v4l2_selection *sel)
 654 {
 655         struct vpbe_layer *layer = video_drvdata(file);
 656         struct vpbe_display *disp_dev = layer->disp_dev;
 657         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 658         struct osd_layer_config *cfg = &layer->layer_info.config;
 659         struct osd_state *osd_device = disp_dev->osd_device;
 660         struct v4l2_rect rect = sel->r;
 661         int ret;
 662
 663         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 664                 "VIDIOC_S_SELECTION, layer id = %d\n", layer->device_id);
 665
 666         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
 667             sel->target != V4L2_SEL_TGT_CROP)
 668                 return -EINVAL;
 669
 670         if (rect.top < 0)
 671                 rect.top = 0;
 672         if (rect.left < 0)
 673                 rect.left = 0;
 674
 675         vpbe_disp_check_window_params(disp_dev, &rect);
 676
 677         osd_device->ops.get_layer_config(osd_device,
 678                         layer->layer_info.id, cfg);
 679
 680         vpbe_disp_calculate_scale_factor(disp_dev, layer,
 681                                         rect.width,
 682                                         rect.height);
 683         vpbe_disp_adj_position(disp_dev, layer, rect.top,
 684                                         rect.left);
 685         ret = osd_device->ops.set_layer_config(osd_device,
 686                                 layer->layer_info.id, cfg);
 687         if (ret < 0) {
 688                 v4l2_err(&vpbe_dev->v4l2_dev,
 689                         "Error in set layer config:\n");
 690                 return -EINVAL;
 691         }
 692
 693         /* apply zooming and h or v expansion */
 694         osd_device->ops.set_zoom(osd_device,
 695                         layer->layer_info.id,
 696                         layer->layer_info.h_zoom,
 697                         layer->layer_info.v_zoom);
 698         ret = osd_device->ops.set_vid_expansion(osd_device,
 699                         layer->layer_info.h_exp,
 700                         layer->layer_info.v_exp);
 701         if (ret < 0) {
 702                 v4l2_err(&vpbe_dev->v4l2_dev,
 703                 "Error in set vid expansion:\n");
 704                 return -EINVAL;
 705         }
 706
 707         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
 708                 (layer->layer_info.v_zoom != ZOOM_X1) ||
 709                 (layer->layer_info.h_exp != H_EXP_OFF) ||
 710                 (layer->layer_info.v_exp != V_EXP_OFF))
 711                 /* Enable expansion filter */
 712                 osd_device->ops.set_interpolation_filter(osd_device, 1);
 713         else
 714                 osd_device->ops.set_interpolation_filter(osd_device, 0);
 715
 716         sel->r = rect;
 717         return 0;
 718 }
 719
 720 static int vpbe_display_g_selection(struct file *file, void *priv,
 721                                     struct v4l2_selection *sel)
 722 {
 723         struct vpbe_layer *layer = video_drvdata(file);
 724         struct osd_layer_config *cfg = &layer->layer_info.config;
 725         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 726         struct osd_state *osd_device = layer->disp_dev->osd_device;
 727         struct v4l2_rect *rect = &sel->r;
 728
 729         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 730                         "VIDIOC_G_SELECTION, layer id = %d\n",
 731                         layer->device_id);
 732
 733         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 734                 return -EINVAL;
 735
 736         switch (sel->target) {
 737         case V4L2_SEL_TGT_CROP:
 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                 break;
 745         case V4L2_SEL_TGT_CROP_DEFAULT:
 746         case V4L2_SEL_TGT_CROP_BOUNDS:
 747                 rect->left = 0;
 748                 rect->top = 0;
 749                 rect->width = vpbe_dev->current_timings.xres;
 750                 rect->height = vpbe_dev->current_timings.yres;
 751                 break;
 752         default:
 753                 return -EINVAL;
 754         }
 755
 756         return 0;
 757 }
 758
 759 static int vpbe_display_cropcap(struct file *file, void *priv,
 760                               struct v4l2_cropcap *cropcap)
 761 {
 762         struct vpbe_layer *layer = video_drvdata(file);
 763         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 764
 765         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
 766
 767         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 768                 return -EINVAL;
 769
 770         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
 771         return 0;
 772 }
 773
 774 static int vpbe_display_g_fmt(struct file *file, void *priv,
 775                                 struct v4l2_format *fmt)
 776 {
 777         struct vpbe_layer *layer = video_drvdata(file);
 778         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 779
 780         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 781                         "VIDIOC_G_FMT, layer id = %d\n",
 782                         layer->device_id);
 783
 784         /* If buffer type is video output */
 785         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 786                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 787                 return -EINVAL;
 788         }
 789         /* Fill in the information about format */
 790         fmt->fmt.pix = layer->pix_fmt;
 791
 792         return 0;
 793 }
 794
 795 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
 796                                    struct v4l2_fmtdesc *fmt)
 797 {
 798         struct vpbe_layer *layer = video_drvdata(file);
 799         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 800         unsigned int index = 0;
 801
 802         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 803                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
 804                                 layer->device_id);
 805         if (fmt->index > 1) {
 806                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
 807                 return -EINVAL;
 808         }
 809
 810         /* Fill in the information about format */
 811         index = fmt->index;
 812         memset(fmt, 0, sizeof(*fmt));
 813         fmt->index = index;
 814         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 815         if (index == 0) {
 816                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
 817                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
 818         } else {
 819                 strcpy(fmt->description, "Y/CbCr 4:2:0");
 820                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
 821         }
 822
 823         return 0;
 824 }
 825
 826 static int vpbe_display_s_fmt(struct file *file, void *priv,
 827                                 struct v4l2_format *fmt)
 828 {
 829         struct vpbe_layer *layer = video_drvdata(file);
 830         struct vpbe_display *disp_dev = layer->disp_dev;
 831         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
 832         struct osd_layer_config *cfg  = &layer->layer_info.config;
 833         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 834         struct osd_state *osd_device = disp_dev->osd_device;
 835         int ret;
 836
 837         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
 838                         "VIDIOC_S_FMT, layer id = %d\n",
 839                         layer->device_id);
 840
 841         if (vb2_is_busy(&layer->buffer_queue))
 842                 return -EBUSY;
 843
 844         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 845                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
 846                 return -EINVAL;
 847         }
 848         /* Check for valid pixel format */
 849         ret = vpbe_try_format(disp_dev, pixfmt, 1);
 850         if (ret)
 851                 return ret;
 852
 853         /* YUV420 is requested, check availability of the
 854         other video window */
 855
 856         layer->pix_fmt = *pixfmt;
 857         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
 858                 struct vpbe_layer *otherlayer;
 859
 860                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
 861                 /* if other layer is available, only
 862                  * claim it, do not configure it
 863                  */
 864                 ret = osd_device->ops.request_layer(osd_device,
 865                                                     otherlayer->layer_info.id);
 866                 if (ret < 0) {
 867                         v4l2_err(&vpbe_dev->v4l2_dev,
 868                                  "Display Manager failed to allocate layer\n");
 869                         return -EBUSY;
 870                 }
 871         }
 872
 873         /* Get osd layer config */
 874         osd_device->ops.get_layer_config(osd_device,
 875                         layer->layer_info.id, cfg);
 876         /* Store the pixel format in the layer object */
 877         cfg->xsize = pixfmt->width;
 878         cfg->ysize = pixfmt->height;
 879         cfg->line_length = pixfmt->bytesperline;
 880         cfg->ypos = 0;
 881         cfg->xpos = 0;
 882         cfg->interlaced = vpbe_dev->current_timings.interlaced;
 883
 884         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
 885                 cfg->pixfmt = PIXFMT_YCBCRI;
 886
 887         /* Change of the default pixel format for both video windows */
 888         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
 889                 struct vpbe_layer *otherlayer;
 890                 cfg->pixfmt = PIXFMT_NV12;
 891                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
 892                                                                 layer);
 893                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
 894         }
 895
 896         /* Set the layer config in the osd window */
 897         ret = osd_device->ops.set_layer_config(osd_device,
 898                                 layer->layer_info.id, cfg);
 899         if (ret < 0) {
 900                 v4l2_err(&vpbe_dev->v4l2_dev,
 901                                 "Error in S_FMT params:\n");
 902                 return -EINVAL;
 903         }
 904
 905         /* Readback and fill the local copy of current pix format */
 906         osd_device->ops.get_layer_config(osd_device,
 907                         layer->layer_info.id, cfg);
 908
 909         return 0;
 910 }
 911
 912 static int vpbe_display_try_fmt(struct file *file, void *priv,
 913                                   struct v4l2_format *fmt)
 914 {
 915         struct vpbe_layer *layer = video_drvdata(file);
 916         struct vpbe_display *disp_dev = layer->disp_dev;
 917         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 918         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
 919
 920         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
 921
 922         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
 923                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
 924                 return -EINVAL;
 925         }
 926
 927         /* Check for valid field format */
 928         return  vpbe_try_format(disp_dev, pixfmt, 0);
 929
 930 }
 931
 932 /**
 933  * vpbe_display_s_std - Set the given standard in the encoder
 934  *
 935  * Sets the standard if supported by the current encoder. Return the status.
 936  * 0 - success & -EINVAL on error
 937  */
 938 static int vpbe_display_s_std(struct file *file, void *priv,
 939                                 v4l2_std_id std_id)
 940 {
 941         struct vpbe_layer *layer = video_drvdata(file);
 942         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 943         int ret;
 944
 945         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
 946
 947         if (vb2_is_busy(&layer->buffer_queue))
 948                 return -EBUSY;
 949
 950         if (NULL != vpbe_dev->ops.s_std) {
 951                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
 952                 if (ret) {
 953                         v4l2_err(&vpbe_dev->v4l2_dev,
 954                         "Failed to set standard for sub devices\n");
 955                         return -EINVAL;
 956                 }
 957         } else {
 958                 return -EINVAL;
 959         }
 960
 961         return 0;
 962 }
 963
 964 /**
 965  * vpbe_display_g_std - Get the standard in the current encoder
 966  *
 967  * Get the standard in the current encoder. Return the status. 0 - success
 968  * -EINVAL on error
 969  */
 970 static int vpbe_display_g_std(struct file *file, void *priv,
 971                                 v4l2_std_id *std_id)
 972 {
 973         struct vpbe_layer *layer = video_drvdata(file);
 974         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 975
 976         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
 977
 978         /* Get the standard from the current encoder */
 979         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
 980                 *std_id = vpbe_dev->current_timings.std_id;
 981                 return 0;
 982         }
 983
 984         return -EINVAL;
 985 }
 986
 987 /**
 988  * vpbe_display_enum_output - enumerate outputs
 989  *
 990  * Enumerates the outputs available at the vpbe display
 991  * returns the status, -EINVAL if end of output list
 992  */
 993 static int vpbe_display_enum_output(struct file *file, void *priv,
 994                                     struct v4l2_output *output)
 995 {
 996         struct vpbe_layer *layer = video_drvdata(file);
 997         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
 998         int ret;
 999
1000         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
1001
1002         /* Enumerate outputs */
1003
1004         if (NULL == vpbe_dev->ops.enum_outputs)
1005                 return -EINVAL;
1006
1007         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1008         if (ret) {
1009                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1010                         "Failed to enumerate outputs\n");
1011                 return -EINVAL;
1012         }
1013
1014         return 0;
1015 }
1016
1017 /**
1018  * vpbe_display_s_output - Set output to
1019  * the output specified by the index
1020  */
1021 static int vpbe_display_s_output(struct file *file, void *priv,
1022                                 unsigned int i)
1023 {
1024         struct vpbe_layer *layer = video_drvdata(file);
1025         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1026         int ret;
1027
1028         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1029
1030         if (vb2_is_busy(&layer->buffer_queue))
1031                 return -EBUSY;
1032
1033         if (NULL == vpbe_dev->ops.set_output)
1034                 return -EINVAL;
1035
1036         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1037         if (ret) {
1038                 v4l2_err(&vpbe_dev->v4l2_dev,
1039                         "Failed to set output for sub devices\n");
1040                 return -EINVAL;
1041         }
1042
1043         return 0;
1044 }
1045
1046 /**
1047  * vpbe_display_g_output - Get output from subdevice
1048  * for a given by the index
1049  */
1050 static int vpbe_display_g_output(struct file *file, void *priv,
1051                                 unsigned int *i)
1052 {
1053         struct vpbe_layer *layer = video_drvdata(file);
1054         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1055
1056         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1057         /* Get the standard from the current encoder */
1058         *i = vpbe_dev->current_out_index;
1059
1060         return 0;
1061 }
1062
1063 /**
1064  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1065  *
1066  * enum the timings in the current encoder. Return the status. 0 - success
1067  * -EINVAL on error
1068  */
1069 static int
1070 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1071                         struct v4l2_enum_dv_timings *timings)
1072 {
1073         struct vpbe_layer *layer = video_drvdata(file);
1074         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1075         int ret;
1076
1077         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1078
1079         /* Enumerate outputs */
1080         if (NULL == vpbe_dev->ops.enum_dv_timings)
1081                 return -EINVAL;
1082
1083         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1084         if (ret) {
1085                 v4l2_err(&vpbe_dev->v4l2_dev,
1086                         "Failed to enumerate dv timings info\n");
1087                 return -EINVAL;
1088         }
1089
1090         return 0;
1091 }
1092
1093 /**
1094  * vpbe_display_s_dv_timings - Set the dv timings
1095  *
1096  * Set the timings in the current encoder. Return the status. 0 - success
1097  * -EINVAL on error
1098  */
1099 static int
1100 vpbe_display_s_dv_timings(struct file *file, void *priv,
1101                                 struct v4l2_dv_timings *timings)
1102 {
1103         struct vpbe_layer *layer = video_drvdata(file);
1104         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1105         int ret;
1106
1107         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1108
1109         if (vb2_is_busy(&layer->buffer_queue))
1110                 return -EBUSY;
1111
1112         /* Set the given standard in the encoder */
1113         if (!vpbe_dev->ops.s_dv_timings)
1114                 return -EINVAL;
1115
1116         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1117         if (ret) {
1118                 v4l2_err(&vpbe_dev->v4l2_dev,
1119                         "Failed to set the dv timings info\n");
1120                 return -EINVAL;
1121         }
1122
1123         return 0;
1124 }
1125
1126 /**
1127  * vpbe_display_g_dv_timings - Set the dv timings
1128  *
1129  * Get the timings in the current encoder. Return the status. 0 - success
1130  * -EINVAL on error
1131  */
1132 static int
1133 vpbe_display_g_dv_timings(struct file *file, void *priv,
1134                                 struct v4l2_dv_timings *dv_timings)
1135 {
1136         struct vpbe_layer *layer = video_drvdata(file);
1137         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1138
1139         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1140
1141         /* Get the given standard in the encoder */
1142
1143         if (vpbe_dev->current_timings.timings_type &
1144                                 VPBE_ENC_DV_TIMINGS) {
1145                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1146         } else {
1147                 return -EINVAL;
1148         }
1149
1150         return 0;
1151 }
1152
1153 /*
1154  * vpbe_display_open()
1155  * It creates object of file handle structure and stores it in private_data
1156  * member of filepointer
1157  */
1158 static int vpbe_display_open(struct file *file)
1159 {
1160         struct vpbe_layer *layer = video_drvdata(file);
1161         struct vpbe_display *disp_dev = layer->disp_dev;
1162         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1163         struct osd_state *osd_device = disp_dev->osd_device;
1164         int err;
1165
1166         /* creating context for file descriptor */
1167         err = v4l2_fh_open(file);
1168         if (err) {
1169                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1170                 return err;
1171         }
1172
1173         /* leaving if layer is already initialized */
1174         if (!v4l2_fh_is_singular_file(file))
1175                 return err;
1176
1177         if (!layer->usrs) {
1178                 if (mutex_lock_interruptible(&layer->opslock))
1179                         return -ERESTARTSYS;
1180                 /* First claim the layer for this device */
1181                 err = osd_device->ops.request_layer(osd_device,
1182                                                 layer->layer_info.id);
1183                 mutex_unlock(&layer->opslock);
1184                 if (err < 0) {
1185                         /* Couldn't get layer */
1186                         v4l2_err(&vpbe_dev->v4l2_dev,
1187                                 "Display Manager failed to allocate layer\n");
1188                         v4l2_fh_release(file);
1189                         return -EINVAL;
1190                 }
1191         }
1192         /* Increment layer usrs counter */
1193         layer->usrs++;
1194         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1195                         "vpbe display device opened successfully\n");
1196         return 0;
1197 }
1198
1199 /*
1200  * vpbe_display_release()
1201  * This function deletes buffer queue, frees the buffers and the davinci
1202  * display file * handle
1203  */
1204 static int vpbe_display_release(struct file *file)
1205 {
1206         struct vpbe_layer *layer = video_drvdata(file);
1207         struct osd_layer_config *cfg  = &layer->layer_info.config;
1208         struct vpbe_display *disp_dev = layer->disp_dev;
1209         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1210         struct osd_state *osd_device = disp_dev->osd_device;
1211
1212         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1213
1214         mutex_lock(&layer->opslock);
1215
1216         osd_device->ops.disable_layer(osd_device,
1217                         layer->layer_info.id);
1218         /* Decrement layer usrs counter */
1219         layer->usrs--;
1220         /* If this file handle has initialize encoder device, reset it */
1221         if (!layer->usrs) {
1222                 if (cfg->pixfmt == PIXFMT_NV12) {
1223                         struct vpbe_layer *otherlayer;
1224                         otherlayer =
1225                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1226                         osd_device->ops.disable_layer(osd_device,
1227                                         otherlayer->layer_info.id);
1228                         osd_device->ops.release_layer(osd_device,
1229                                         otherlayer->layer_info.id);
1230                 }
1231                 osd_device->ops.disable_layer(osd_device,
1232                                 layer->layer_info.id);
1233                 osd_device->ops.release_layer(osd_device,
1234                                 layer->layer_info.id);
1235         }
1236
1237         _vb2_fop_release(file, NULL);
1238         mutex_unlock(&layer->opslock);
1239
1240         disp_dev->cbcr_ofst = 0;
1241
1242         return 0;
1243 }
1244
1245 /* vpbe capture ioctl operations */
1246 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1247         .vidioc_querycap         = vpbe_display_querycap,
1248         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1249         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1250         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1251         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1252
1253         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1254         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1255         .vidioc_querybuf         = vb2_ioctl_querybuf,
1256         .vidioc_qbuf             = vb2_ioctl_qbuf,
1257         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1258         .vidioc_streamon         = vb2_ioctl_streamon,
1259         .vidioc_streamoff        = vb2_ioctl_streamoff,
1260         .vidioc_expbuf           = vb2_ioctl_expbuf,
1261
1262         .vidioc_cropcap          = vpbe_display_cropcap,
1263         .vidioc_g_selection      = vpbe_display_g_selection,
1264         .vidioc_s_selection      = vpbe_display_s_selection,
1265
1266         .vidioc_s_std            = vpbe_display_s_std,
1267         .vidioc_g_std            = vpbe_display_g_std,
1268
1269         .vidioc_enum_output      = vpbe_display_enum_output,
1270         .vidioc_s_output         = vpbe_display_s_output,
1271         .vidioc_g_output         = vpbe_display_g_output,
1272
1273         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1274         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1275         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1276 };
1277
1278 static struct v4l2_file_operations vpbe_fops = {
1279         .owner = THIS_MODULE,
1280         .open = vpbe_display_open,
1281         .release = vpbe_display_release,
1282         .unlocked_ioctl = video_ioctl2,
1283         .mmap = vb2_fop_mmap,
1284         .poll =  vb2_fop_poll,
1285 };
1286
1287 static int vpbe_device_get(struct device *dev, void *data)
1288 {
1289         struct platform_device *pdev = to_platform_device(dev);
1290         struct vpbe_display *vpbe_disp  = data;
1291
1292         if (strcmp("vpbe_controller", pdev->name) == 0)
1293                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1294
1295         if (strstr(pdev->name, "vpbe-osd") != NULL)
1296                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1297
1298         return 0;
1299 }
1300
1301 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1302                            struct platform_device *pdev)
1303 {
1304         struct vpbe_layer *vpbe_display_layer = NULL;
1305         struct video_device *vbd = NULL;
1306
1307         /* Allocate memory for four plane display objects */
1308
1309         disp_dev->dev[i] =
1310                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1311
1312         /* If memory allocation fails, return error */
1313         if (!disp_dev->dev[i]) {
1314                 printk(KERN_ERR "ran out of memory\n");
1315                 return  -ENOMEM;
1316         }
1317         spin_lock_init(&disp_dev->dev[i]->irqlock);
1318         mutex_init(&disp_dev->dev[i]->opslock);
1319
1320         /* Get the pointer to the layer object */
1321         vpbe_display_layer = disp_dev->dev[i];
1322         vbd = &vpbe_display_layer->video_dev;
1323         /* Initialize field of video device */
1324         vbd->release    = video_device_release_empty;
1325         vbd->fops       = &vpbe_fops;
1326         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1327         vbd->minor      = -1;
1328         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1329         vbd->lock       = &vpbe_display_layer->opslock;
1330         vbd->vfl_dir    = VFL_DIR_TX;
1331
1332         if (disp_dev->vpbe_dev->current_timings.timings_type &
1333                         VPBE_ENC_STD)
1334                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1335
1336         snprintf(vbd->name, sizeof(vbd->name),
1337                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1338                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1339                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1340                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1341
1342         vpbe_display_layer->device_id = i;
1343
1344         vpbe_display_layer->layer_info.id =
1345                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1346
1347
1348         return 0;
1349 }
1350
1351 static int register_device(struct vpbe_layer *vpbe_display_layer,
1352                            struct vpbe_display *disp_dev,
1353                            struct platform_device *pdev)
1354 {
1355         int err;
1356
1357         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1358                   "Trying to register VPBE display device.\n");
1359         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1360                   "layer=%x,layer->video_dev=%x\n",
1361                   (int)vpbe_display_layer,
1362                   (int)&vpbe_display_layer->video_dev);
1363
1364         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1365         err = video_register_device(&vpbe_display_layer->video_dev,
1366                                     VFL_TYPE_GRABBER,
1367                                     -1);
1368         if (err)
1369                 return -ENODEV;
1370
1371         vpbe_display_layer->disp_dev = disp_dev;
1372         /* set the driver data in platform device */
1373         platform_set_drvdata(pdev, disp_dev);
1374         video_set_drvdata(&vpbe_display_layer->video_dev,
1375                           vpbe_display_layer);
1376
1377         return 0;
1378 }
1379
1380
1381
1382 /*
1383  * vpbe_display_probe()
1384  * This function creates device entries by register itself to the V4L2 driver
1385  * and initializes fields of each layer objects
1386  */
1387 static int vpbe_display_probe(struct platform_device *pdev)
1388 {
1389         struct vpbe_display *disp_dev;
1390         struct v4l2_device *v4l2_dev;
1391         struct resource *res = NULL;
1392         struct vb2_queue *q;
1393         int k;
1394         int i;
1395         int err;
1396         int irq;
1397
1398         printk(KERN_DEBUG "vpbe_display_probe\n");
1399         /* Allocate memory for vpbe_display */
1400         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1401                                 GFP_KERNEL);
1402         if (!disp_dev)
1403                 return -ENOMEM;
1404
1405         spin_lock_init(&disp_dev->dma_queue_lock);
1406         /*
1407          * Scan all the platform devices to find the vpbe
1408          * controller device and get the vpbe_dev object
1409          */
1410         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1411                         vpbe_device_get);
1412         if (err < 0)
1413                 return err;
1414
1415         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1416         /* Initialize the vpbe display controller */
1417         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1418                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1419                                                          disp_dev->vpbe_dev);
1420                 if (err) {
1421                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1422                         err = -ENOMEM;
1423                         goto probe_out;
1424                 }
1425         }
1426
1427         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1428                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1429                         err = -ENODEV;
1430                         goto probe_out;
1431                 }
1432         }
1433
1434         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1435         if (!res) {
1436                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1437                 err = -ENODEV;
1438                 goto probe_out;
1439         }
1440
1441         irq = res->start;
1442         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1443                                VPBE_DISPLAY_DRIVER, disp_dev);
1444         if (err) {
1445                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1446                 goto probe_out;
1447         }
1448
1449         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1450                 /* initialize vb2 queue */
1451                 q = &disp_dev->dev[i]->buffer_queue;
1452                 memset(q, 0, sizeof(*q));
1453                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1454                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1455                 q->drv_priv = disp_dev->dev[i];
1456                 q->ops = &video_qops;
1457                 q->mem_ops = &vb2_dma_contig_memops;
1458                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1459                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1460                 q->min_buffers_needed = 1;
1461                 q->lock = &disp_dev->dev[i]->opslock;
1462                 q->dev = disp_dev->vpbe_dev->pdev;
1463                 err = vb2_queue_init(q);
1464                 if (err) {
1465                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1466                         goto probe_out;
1467                 }
1468
1469                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1470
1471                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1472                         err = -ENODEV;
1473                         goto probe_out;
1474                 }
1475         }
1476
1477         v4l2_dbg(1, debug, v4l2_dev,
1478                  "Successfully completed the probing of vpbe v4l2 device\n");
1479
1480         return 0;
1481
1482 probe_out:
1483         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1484                 /* Unregister video device */
1485                 if (disp_dev->dev[k] != NULL) {
1486                         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                 /* Unregister video device */
1514                 video_unregister_device(&vpbe_display_layer->video_dev);
1515
1516         }
1517         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1518                 kfree(disp_dev->dev[i]);
1519                 disp_dev->dev[i] = NULL;
1520         }
1521
1522         return 0;
1523 }
1524
1525 static struct platform_driver vpbe_display_driver = {
1526         .driver = {
1527                 .name = VPBE_DISPLAY_DRIVER,
1528                 .bus = &platform_bus_type,
1529         },
1530         .probe = vpbe_display_probe,
1531         .remove = vpbe_display_remove,
1532 };
1533
1534 module_platform_driver(vpbe_display_driver);
1535
1536 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1537 MODULE_LICENSE("GPL");
1538 MODULE_AUTHOR("Texas Instruments");