Version:  2.0.40 2.2.26 2.4.37 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

Linux/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_CROP 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_crop(struct file *file, void *priv,
653                              const struct v4l2_crop *crop)
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 = crop->c;
661         int ret;
662 
663         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
664                 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
665 
666         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
667                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
668                 return -EINVAL;
669         }
670 
671         if (rect.top < 0)
672                 rect.top = 0;
673         if (rect.left < 0)
674                 rect.left = 0;
675 
676         vpbe_disp_check_window_params(disp_dev, &rect);
677 
678         osd_device->ops.get_layer_config(osd_device,
679                         layer->layer_info.id, cfg);
680 
681         vpbe_disp_calculate_scale_factor(disp_dev, layer,
682                                         rect.width,
683                                         rect.height);
684         vpbe_disp_adj_position(disp_dev, layer, rect.top,
685                                         rect.left);
686         ret = osd_device->ops.set_layer_config(osd_device,
687                                 layer->layer_info.id, cfg);
688         if (ret < 0) {
689                 v4l2_err(&vpbe_dev->v4l2_dev,
690                         "Error in set layer config:\n");
691                 return -EINVAL;
692         }
693 
694         /* apply zooming and h or v expansion */
695         osd_device->ops.set_zoom(osd_device,
696                         layer->layer_info.id,
697                         layer->layer_info.h_zoom,
698                         layer->layer_info.v_zoom);
699         ret = osd_device->ops.set_vid_expansion(osd_device,
700                         layer->layer_info.h_exp,
701                         layer->layer_info.v_exp);
702         if (ret < 0) {
703                 v4l2_err(&vpbe_dev->v4l2_dev,
704                 "Error in set vid expansion:\n");
705                 return -EINVAL;
706         }
707 
708         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
709                 (layer->layer_info.v_zoom != ZOOM_X1) ||
710                 (layer->layer_info.h_exp != H_EXP_OFF) ||
711                 (layer->layer_info.v_exp != V_EXP_OFF))
712                 /* Enable expansion filter */
713                 osd_device->ops.set_interpolation_filter(osd_device, 1);
714         else
715                 osd_device->ops.set_interpolation_filter(osd_device, 0);
716 
717         return 0;
718 }
719 
720 static int vpbe_display_g_crop(struct file *file, void *priv,
721                              struct v4l2_crop *crop)
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 = &crop->c;
728 
729         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
730                         "VIDIOC_G_CROP, layer id = %d\n",
731                         layer->device_id);
732 
733         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
734                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
735                 return -EINVAL;
736         }
737         osd_device->ops.get_layer_config(osd_device,
738                                 layer->layer_info.id, cfg);
739         rect->top = cfg->ypos;
740         rect->left = cfg->xpos;
741         rect->width = cfg->xsize;
742         rect->height = cfg->ysize;
743 
744         return 0;
745 }
746 
747 static int vpbe_display_cropcap(struct file *file, void *priv,
748                               struct v4l2_cropcap *cropcap)
749 {
750         struct vpbe_layer *layer = video_drvdata(file);
751         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
752 
753         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
754 
755         cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
756         cropcap->bounds.left = 0;
757         cropcap->bounds.top = 0;
758         cropcap->bounds.width = vpbe_dev->current_timings.xres;
759         cropcap->bounds.height = vpbe_dev->current_timings.yres;
760         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
761         cropcap->defrect = cropcap->bounds;
762         return 0;
763 }
764 
765 static int vpbe_display_g_fmt(struct file *file, void *priv,
766                                 struct v4l2_format *fmt)
767 {
768         struct vpbe_layer *layer = video_drvdata(file);
769         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
770 
771         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
772                         "VIDIOC_G_FMT, layer id = %d\n",
773                         layer->device_id);
774 
775         /* If buffer type is video output */
776         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
777                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
778                 return -EINVAL;
779         }
780         /* Fill in the information about format */
781         fmt->fmt.pix = layer->pix_fmt;
782 
783         return 0;
784 }
785 
786 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
787                                    struct v4l2_fmtdesc *fmt)
788 {
789         struct vpbe_layer *layer = video_drvdata(file);
790         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
791         unsigned int index = 0;
792 
793         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
794                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
795                                 layer->device_id);
796         if (fmt->index > 1) {
797                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
798                 return -EINVAL;
799         }
800 
801         /* Fill in the information about format */
802         index = fmt->index;
803         memset(fmt, 0, sizeof(*fmt));
804         fmt->index = index;
805         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
806         if (index == 0) {
807                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
808                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
809         } else {
810                 strcpy(fmt->description, "Y/CbCr 4:2:0");
811                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
812         }
813 
814         return 0;
815 }
816 
817 static int vpbe_display_s_fmt(struct file *file, void *priv,
818                                 struct v4l2_format *fmt)
819 {
820         struct vpbe_layer *layer = video_drvdata(file);
821         struct vpbe_display *disp_dev = layer->disp_dev;
822         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
823         struct osd_layer_config *cfg  = &layer->layer_info.config;
824         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
825         struct osd_state *osd_device = disp_dev->osd_device;
826         int ret;
827 
828         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
829                         "VIDIOC_S_FMT, layer id = %d\n",
830                         layer->device_id);
831 
832         if (vb2_is_busy(&layer->buffer_queue))
833                 return -EBUSY;
834 
835         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
836                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
837                 return -EINVAL;
838         }
839         /* Check for valid pixel format */
840         ret = vpbe_try_format(disp_dev, pixfmt, 1);
841         if (ret)
842                 return ret;
843 
844         /* YUV420 is requested, check availability of the
845         other video window */
846 
847         layer->pix_fmt = *pixfmt;
848         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
849                 struct vpbe_layer *otherlayer;
850 
851                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
852                 /* if other layer is available, only
853                  * claim it, do not configure it
854                  */
855                 ret = osd_device->ops.request_layer(osd_device,
856                                                     otherlayer->layer_info.id);
857                 if (ret < 0) {
858                         v4l2_err(&vpbe_dev->v4l2_dev,
859                                  "Display Manager failed to allocate layer\n");
860                         return -EBUSY;
861                 }
862         }
863 
864         /* Get osd layer config */
865         osd_device->ops.get_layer_config(osd_device,
866                         layer->layer_info.id, cfg);
867         /* Store the pixel format in the layer object */
868         cfg->xsize = pixfmt->width;
869         cfg->ysize = pixfmt->height;
870         cfg->line_length = pixfmt->bytesperline;
871         cfg->ypos = 0;
872         cfg->xpos = 0;
873         cfg->interlaced = vpbe_dev->current_timings.interlaced;
874 
875         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
876                 cfg->pixfmt = PIXFMT_YCBCRI;
877 
878         /* Change of the default pixel format for both video windows */
879         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
880                 struct vpbe_layer *otherlayer;
881                 cfg->pixfmt = PIXFMT_NV12;
882                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
883                                                                 layer);
884                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
885         }
886 
887         /* Set the layer config in the osd window */
888         ret = osd_device->ops.set_layer_config(osd_device,
889                                 layer->layer_info.id, cfg);
890         if (ret < 0) {
891                 v4l2_err(&vpbe_dev->v4l2_dev,
892                                 "Error in S_FMT params:\n");
893                 return -EINVAL;
894         }
895 
896         /* Readback and fill the local copy of current pix format */
897         osd_device->ops.get_layer_config(osd_device,
898                         layer->layer_info.id, cfg);
899 
900         return 0;
901 }
902 
903 static int vpbe_display_try_fmt(struct file *file, void *priv,
904                                   struct v4l2_format *fmt)
905 {
906         struct vpbe_layer *layer = video_drvdata(file);
907         struct vpbe_display *disp_dev = layer->disp_dev;
908         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
909         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
910 
911         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
912 
913         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
914                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
915                 return -EINVAL;
916         }
917 
918         /* Check for valid field format */
919         return  vpbe_try_format(disp_dev, pixfmt, 0);
920 
921 }
922 
923 /**
924  * vpbe_display_s_std - Set the given standard in the encoder
925  *
926  * Sets the standard if supported by the current encoder. Return the status.
927  * 0 - success & -EINVAL on error
928  */
929 static int vpbe_display_s_std(struct file *file, void *priv,
930                                 v4l2_std_id std_id)
931 {
932         struct vpbe_layer *layer = video_drvdata(file);
933         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
934         int ret;
935 
936         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
937 
938         if (vb2_is_busy(&layer->buffer_queue))
939                 return -EBUSY;
940 
941         if (NULL != vpbe_dev->ops.s_std) {
942                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
943                 if (ret) {
944                         v4l2_err(&vpbe_dev->v4l2_dev,
945                         "Failed to set standard for sub devices\n");
946                         return -EINVAL;
947                 }
948         } else {
949                 return -EINVAL;
950         }
951 
952         return 0;
953 }
954 
955 /**
956  * vpbe_display_g_std - Get the standard in the current encoder
957  *
958  * Get the standard in the current encoder. Return the status. 0 - success
959  * -EINVAL on error
960  */
961 static int vpbe_display_g_std(struct file *file, void *priv,
962                                 v4l2_std_id *std_id)
963 {
964         struct vpbe_layer *layer = video_drvdata(file);
965         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
966 
967         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
968 
969         /* Get the standard from the current encoder */
970         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
971                 *std_id = vpbe_dev->current_timings.std_id;
972                 return 0;
973         }
974 
975         return -EINVAL;
976 }
977 
978 /**
979  * vpbe_display_enum_output - enumerate outputs
980  *
981  * Enumerates the outputs available at the vpbe display
982  * returns the status, -EINVAL if end of output list
983  */
984 static int vpbe_display_enum_output(struct file *file, void *priv,
985                                     struct v4l2_output *output)
986 {
987         struct vpbe_layer *layer = video_drvdata(file);
988         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
989         int ret;
990 
991         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
992 
993         /* Enumerate outputs */
994 
995         if (NULL == vpbe_dev->ops.enum_outputs)
996                 return -EINVAL;
997 
998         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
999         if (ret) {
1000                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1001                         "Failed to enumerate outputs\n");
1002                 return -EINVAL;
1003         }
1004 
1005         return 0;
1006 }
1007 
1008 /**
1009  * vpbe_display_s_output - Set output to
1010  * the output specified by the index
1011  */
1012 static int vpbe_display_s_output(struct file *file, void *priv,
1013                                 unsigned int i)
1014 {
1015         struct vpbe_layer *layer = video_drvdata(file);
1016         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1017         int ret;
1018 
1019         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1020 
1021         if (vb2_is_busy(&layer->buffer_queue))
1022                 return -EBUSY;
1023 
1024         if (NULL == vpbe_dev->ops.set_output)
1025                 return -EINVAL;
1026 
1027         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1028         if (ret) {
1029                 v4l2_err(&vpbe_dev->v4l2_dev,
1030                         "Failed to set output for sub devices\n");
1031                 return -EINVAL;
1032         }
1033 
1034         return 0;
1035 }
1036 
1037 /**
1038  * vpbe_display_g_output - Get output from subdevice
1039  * for a given by the index
1040  */
1041 static int vpbe_display_g_output(struct file *file, void *priv,
1042                                 unsigned int *i)
1043 {
1044         struct vpbe_layer *layer = video_drvdata(file);
1045         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1046 
1047         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1048         /* Get the standard from the current encoder */
1049         *i = vpbe_dev->current_out_index;
1050 
1051         return 0;
1052 }
1053 
1054 /**
1055  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1056  *
1057  * enum the timings in the current encoder. Return the status. 0 - success
1058  * -EINVAL on error
1059  */
1060 static int
1061 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1062                         struct v4l2_enum_dv_timings *timings)
1063 {
1064         struct vpbe_layer *layer = video_drvdata(file);
1065         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1066         int ret;
1067 
1068         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1069 
1070         /* Enumerate outputs */
1071         if (NULL == vpbe_dev->ops.enum_dv_timings)
1072                 return -EINVAL;
1073 
1074         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1075         if (ret) {
1076                 v4l2_err(&vpbe_dev->v4l2_dev,
1077                         "Failed to enumerate dv timings info\n");
1078                 return -EINVAL;
1079         }
1080 
1081         return 0;
1082 }
1083 
1084 /**
1085  * vpbe_display_s_dv_timings - Set the dv timings
1086  *
1087  * Set the timings in the current encoder. Return the status. 0 - success
1088  * -EINVAL on error
1089  */
1090 static int
1091 vpbe_display_s_dv_timings(struct file *file, void *priv,
1092                                 struct v4l2_dv_timings *timings)
1093 {
1094         struct vpbe_layer *layer = video_drvdata(file);
1095         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1096         int ret;
1097 
1098         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1099 
1100         if (vb2_is_busy(&layer->buffer_queue))
1101                 return -EBUSY;
1102 
1103         /* Set the given standard in the encoder */
1104         if (!vpbe_dev->ops.s_dv_timings)
1105                 return -EINVAL;
1106 
1107         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1108         if (ret) {
1109                 v4l2_err(&vpbe_dev->v4l2_dev,
1110                         "Failed to set the dv timings info\n");
1111                 return -EINVAL;
1112         }
1113 
1114         return 0;
1115 }
1116 
1117 /**
1118  * vpbe_display_g_dv_timings - Set the dv timings
1119  *
1120  * Get the timings in the current encoder. Return the status. 0 - success
1121  * -EINVAL on error
1122  */
1123 static int
1124 vpbe_display_g_dv_timings(struct file *file, void *priv,
1125                                 struct v4l2_dv_timings *dv_timings)
1126 {
1127         struct vpbe_layer *layer = video_drvdata(file);
1128         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1129 
1130         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1131 
1132         /* Get the given standard in the encoder */
1133 
1134         if (vpbe_dev->current_timings.timings_type &
1135                                 VPBE_ENC_DV_TIMINGS) {
1136                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1137         } else {
1138                 return -EINVAL;
1139         }
1140 
1141         return 0;
1142 }
1143 
1144 /*
1145  * vpbe_display_open()
1146  * It creates object of file handle structure and stores it in private_data
1147  * member of filepointer
1148  */
1149 static int vpbe_display_open(struct file *file)
1150 {
1151         struct vpbe_layer *layer = video_drvdata(file);
1152         struct vpbe_display *disp_dev = layer->disp_dev;
1153         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1154         struct osd_state *osd_device = disp_dev->osd_device;
1155         int err;
1156 
1157         /* creating context for file descriptor */
1158         err = v4l2_fh_open(file);
1159         if (err) {
1160                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1161                 return err;
1162         }
1163 
1164         /* leaving if layer is already initialized */
1165         if (!v4l2_fh_is_singular_file(file))
1166                 return err;
1167 
1168         if (!layer->usrs) {
1169                 if (mutex_lock_interruptible(&layer->opslock))
1170                         return -ERESTARTSYS;
1171                 /* First claim the layer for this device */
1172                 err = osd_device->ops.request_layer(osd_device,
1173                                                 layer->layer_info.id);
1174                 mutex_unlock(&layer->opslock);
1175                 if (err < 0) {
1176                         /* Couldn't get layer */
1177                         v4l2_err(&vpbe_dev->v4l2_dev,
1178                                 "Display Manager failed to allocate layer\n");
1179                         v4l2_fh_release(file);
1180                         return -EINVAL;
1181                 }
1182         }
1183         /* Increment layer usrs counter */
1184         layer->usrs++;
1185         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1186                         "vpbe display device opened successfully\n");
1187         return 0;
1188 }
1189 
1190 /*
1191  * vpbe_display_release()
1192  * This function deletes buffer queue, frees the buffers and the davinci
1193  * display file * handle
1194  */
1195 static int vpbe_display_release(struct file *file)
1196 {
1197         struct vpbe_layer *layer = video_drvdata(file);
1198         struct osd_layer_config *cfg  = &layer->layer_info.config;
1199         struct vpbe_display *disp_dev = layer->disp_dev;
1200         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1201         struct osd_state *osd_device = disp_dev->osd_device;
1202 
1203         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1204 
1205         mutex_lock(&layer->opslock);
1206 
1207         osd_device->ops.disable_layer(osd_device,
1208                         layer->layer_info.id);
1209         /* Decrement layer usrs counter */
1210         layer->usrs--;
1211         /* If this file handle has initialize encoder device, reset it */
1212         if (!layer->usrs) {
1213                 if (cfg->pixfmt == PIXFMT_NV12) {
1214                         struct vpbe_layer *otherlayer;
1215                         otherlayer =
1216                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1217                         osd_device->ops.disable_layer(osd_device,
1218                                         otherlayer->layer_info.id);
1219                         osd_device->ops.release_layer(osd_device,
1220                                         otherlayer->layer_info.id);
1221                 }
1222                 osd_device->ops.disable_layer(osd_device,
1223                                 layer->layer_info.id);
1224                 osd_device->ops.release_layer(osd_device,
1225                                 layer->layer_info.id);
1226         }
1227 
1228         _vb2_fop_release(file, NULL);
1229         mutex_unlock(&layer->opslock);
1230 
1231         disp_dev->cbcr_ofst = 0;
1232 
1233         return 0;
1234 }
1235 
1236 /* vpbe capture ioctl operations */
1237 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1238         .vidioc_querycap         = vpbe_display_querycap,
1239         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1240         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1241         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1242         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1243 
1244         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1245         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1246         .vidioc_querybuf         = vb2_ioctl_querybuf,
1247         .vidioc_qbuf             = vb2_ioctl_qbuf,
1248         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1249         .vidioc_streamon         = vb2_ioctl_streamon,
1250         .vidioc_streamoff        = vb2_ioctl_streamoff,
1251         .vidioc_expbuf           = vb2_ioctl_expbuf,
1252 
1253         .vidioc_cropcap          = vpbe_display_cropcap,
1254         .vidioc_g_crop           = vpbe_display_g_crop,
1255         .vidioc_s_crop           = vpbe_display_s_crop,
1256 
1257         .vidioc_s_std            = vpbe_display_s_std,
1258         .vidioc_g_std            = vpbe_display_g_std,
1259 
1260         .vidioc_enum_output      = vpbe_display_enum_output,
1261         .vidioc_s_output         = vpbe_display_s_output,
1262         .vidioc_g_output         = vpbe_display_g_output,
1263 
1264         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1265         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1266         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1267 };
1268 
1269 static struct v4l2_file_operations vpbe_fops = {
1270         .owner = THIS_MODULE,
1271         .open = vpbe_display_open,
1272         .release = vpbe_display_release,
1273         .unlocked_ioctl = video_ioctl2,
1274         .mmap = vb2_fop_mmap,
1275         .poll =  vb2_fop_poll,
1276 };
1277 
1278 static int vpbe_device_get(struct device *dev, void *data)
1279 {
1280         struct platform_device *pdev = to_platform_device(dev);
1281         struct vpbe_display *vpbe_disp  = data;
1282 
1283         if (strcmp("vpbe_controller", pdev->name) == 0)
1284                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1285 
1286         if (strstr(pdev->name, "vpbe-osd") != NULL)
1287                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1288 
1289         return 0;
1290 }
1291 
1292 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1293                            struct platform_device *pdev)
1294 {
1295         struct vpbe_layer *vpbe_display_layer = NULL;
1296         struct video_device *vbd = NULL;
1297 
1298         /* Allocate memory for four plane display objects */
1299 
1300         disp_dev->dev[i] =
1301                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1302 
1303         /* If memory allocation fails, return error */
1304         if (!disp_dev->dev[i]) {
1305                 printk(KERN_ERR "ran out of memory\n");
1306                 return  -ENOMEM;
1307         }
1308         spin_lock_init(&disp_dev->dev[i]->irqlock);
1309         mutex_init(&disp_dev->dev[i]->opslock);
1310 
1311         /* Get the pointer to the layer object */
1312         vpbe_display_layer = disp_dev->dev[i];
1313         vbd = &vpbe_display_layer->video_dev;
1314         /* Initialize field of video device */
1315         vbd->release    = video_device_release_empty;
1316         vbd->fops       = &vpbe_fops;
1317         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1318         vbd->minor      = -1;
1319         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1320         vbd->lock       = &vpbe_display_layer->opslock;
1321         vbd->vfl_dir    = VFL_DIR_TX;
1322 
1323         if (disp_dev->vpbe_dev->current_timings.timings_type &
1324                         VPBE_ENC_STD)
1325                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1326 
1327         snprintf(vbd->name, sizeof(vbd->name),
1328                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1329                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1330                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1331                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1332 
1333         vpbe_display_layer->device_id = i;
1334 
1335         vpbe_display_layer->layer_info.id =
1336                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1337 
1338 
1339         return 0;
1340 }
1341 
1342 static int register_device(struct vpbe_layer *vpbe_display_layer,
1343                            struct vpbe_display *disp_dev,
1344                            struct platform_device *pdev)
1345 {
1346         int err;
1347 
1348         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1349                   "Trying to register VPBE display device.\n");
1350         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1351                   "layer=%x,layer->video_dev=%x\n",
1352                   (int)vpbe_display_layer,
1353                   (int)&vpbe_display_layer->video_dev);
1354 
1355         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1356         err = video_register_device(&vpbe_display_layer->video_dev,
1357                                     VFL_TYPE_GRABBER,
1358                                     -1);
1359         if (err)
1360                 return -ENODEV;
1361 
1362         vpbe_display_layer->disp_dev = disp_dev;
1363         /* set the driver data in platform device */
1364         platform_set_drvdata(pdev, disp_dev);
1365         video_set_drvdata(&vpbe_display_layer->video_dev,
1366                           vpbe_display_layer);
1367 
1368         return 0;
1369 }
1370 
1371 
1372 
1373 /*
1374  * vpbe_display_probe()
1375  * This function creates device entries by register itself to the V4L2 driver
1376  * and initializes fields of each layer objects
1377  */
1378 static int vpbe_display_probe(struct platform_device *pdev)
1379 {
1380         struct vpbe_display *disp_dev;
1381         struct v4l2_device *v4l2_dev;
1382         struct resource *res = NULL;
1383         struct vb2_queue *q;
1384         int k;
1385         int i;
1386         int err;
1387         int irq;
1388 
1389         printk(KERN_DEBUG "vpbe_display_probe\n");
1390         /* Allocate memory for vpbe_display */
1391         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1392                                 GFP_KERNEL);
1393         if (!disp_dev)
1394                 return -ENOMEM;
1395 
1396         spin_lock_init(&disp_dev->dma_queue_lock);
1397         /*
1398          * Scan all the platform devices to find the vpbe
1399          * controller device and get the vpbe_dev object
1400          */
1401         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1402                         vpbe_device_get);
1403         if (err < 0)
1404                 return err;
1405 
1406         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1407         /* Initialize the vpbe display controller */
1408         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1409                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1410                                                          disp_dev->vpbe_dev);
1411                 if (err) {
1412                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1413                         err = -ENOMEM;
1414                         goto probe_out;
1415                 }
1416         }
1417 
1418         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1419                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1420                         err = -ENODEV;
1421                         goto probe_out;
1422                 }
1423         }
1424 
1425         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1426         if (!res) {
1427                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1428                 err = -ENODEV;
1429                 goto probe_out;
1430         }
1431 
1432         irq = res->start;
1433         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1434                                VPBE_DISPLAY_DRIVER, disp_dev);
1435         if (err) {
1436                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1437                 goto probe_out;
1438         }
1439 
1440         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1441                 /* initialize vb2 queue */
1442                 q = &disp_dev->dev[i]->buffer_queue;
1443                 memset(q, 0, sizeof(*q));
1444                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1445                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1446                 q->drv_priv = disp_dev->dev[i];
1447                 q->ops = &video_qops;
1448                 q->mem_ops = &vb2_dma_contig_memops;
1449                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1450                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1451                 q->min_buffers_needed = 1;
1452                 q->lock = &disp_dev->dev[i]->opslock;
1453                 q->dev = disp_dev->vpbe_dev->pdev;
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                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1461 
1462                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1463                         err = -ENODEV;
1464                         goto probe_out;
1465                 }
1466         }
1467 
1468         v4l2_dbg(1, debug, v4l2_dev,
1469                  "Successfully completed the probing of vpbe v4l2 device\n");
1470 
1471         return 0;
1472 
1473 probe_out:
1474         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1475                 /* Unregister video device */
1476                 if (disp_dev->dev[k] != NULL) {
1477                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1478                         kfree(disp_dev->dev[k]);
1479                 }
1480         }
1481         return err;
1482 }
1483 
1484 /*
1485  * vpbe_display_remove()
1486  * It un-register hardware layer from V4L2 driver
1487  */
1488 static int vpbe_display_remove(struct platform_device *pdev)
1489 {
1490         struct vpbe_layer *vpbe_display_layer;
1491         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1492         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1493         int i;
1494 
1495         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1496 
1497         /* deinitialize the vpbe display controller */
1498         if (NULL != vpbe_dev->ops.deinitialize)
1499                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1500         /* un-register device */
1501         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1502                 /* Get the pointer to the layer object */
1503                 vpbe_display_layer = disp_dev->dev[i];
1504                 /* Unregister video device */
1505                 video_unregister_device(&vpbe_display_layer->video_dev);
1506 
1507         }
1508         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1509                 kfree(disp_dev->dev[i]);
1510                 disp_dev->dev[i] = NULL;
1511         }
1512 
1513         return 0;
1514 }
1515 
1516 static struct platform_driver vpbe_display_driver = {
1517         .driver = {
1518                 .name = VPBE_DISPLAY_DRIVER,
1519                 .bus = &platform_bus_type,
1520         },
1521         .probe = vpbe_display_probe,
1522         .remove = vpbe_display_remove,
1523 };
1524 
1525 module_platform_driver(vpbe_display_driver);
1526 
1527 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1528 MODULE_LICENSE("GPL");
1529 MODULE_AUTHOR("Texas Instruments");
1530 

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