Version:  2.0.40 2.2.26 2.4.37 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0

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         struct timespec timevalue;
 75 
 76         if (layer->cur_frm == layer->next_frm)
 77                 return;
 78         ktime_get_ts(&timevalue);
 79         layer->cur_frm->vb.v4l2_buf.timestamp.tv_sec =
 80                 timevalue.tv_sec;
 81         layer->cur_frm->vb.v4l2_buf.timestamp.tv_usec =
 82                 timevalue.tv_nsec / NSEC_PER_USEC;
 83         vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_DONE);
 84         /* Make cur_frm pointing to next_frm */
 85         layer->cur_frm = layer->next_frm;
 86 }
 87 
 88 static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
 89                                 struct vpbe_layer *layer)
 90 {
 91         struct osd_state *osd_device = disp_obj->osd_device;
 92         unsigned long addr;
 93 
 94         spin_lock(&disp_obj->dma_queue_lock);
 95         if (list_empty(&layer->dma_queue) ||
 96                 (layer->cur_frm != layer->next_frm)) {
 97                 spin_unlock(&disp_obj->dma_queue_lock);
 98                 return;
 99         }
100         /*
101          * one field is displayed configure
102          * the next frame if it is available
103          * otherwise hold on current frame
104          * Get next from the buffer queue
105          */
106         layer->next_frm = list_entry(layer->dma_queue.next,
107                           struct  vpbe_disp_buffer, list);
108         /* Remove that from the buffer queue */
109         list_del(&layer->next_frm->list);
110         spin_unlock(&disp_obj->dma_queue_lock);
111         /* Mark state of the frame to active */
112         layer->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
113         addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb, 0);
114         osd_device->ops.start_layer(osd_device,
115                         layer->layer_info.id,
116                         addr,
117                         disp_obj->cbcr_ofst);
118 }
119 
120 /* interrupt service routine */
121 static irqreturn_t venc_isr(int irq, void *arg)
122 {
123         struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
124         struct vpbe_layer *layer;
125         static unsigned last_event;
126         unsigned event = 0;
127         int fid;
128         int i;
129 
130         if ((NULL == arg) || (NULL == disp_dev->dev[0]))
131                 return IRQ_HANDLED;
132 
133         if (venc_is_second_field(disp_dev))
134                 event |= VENC_SECOND_FIELD;
135         else
136                 event |= VENC_FIRST_FIELD;
137 
138         if (event == (last_event & ~VENC_END_OF_FRAME)) {
139                 /*
140                 * If the display is non-interlaced, then we need to flag the
141                 * end-of-frame event at every interrupt regardless of the
142                 * value of the FIDST bit.  We can conclude that the display is
143                 * non-interlaced if the value of the FIDST bit is unchanged
144                 * from the previous interrupt.
145                 */
146                 event |= VENC_END_OF_FRAME;
147         } else if (event == VENC_SECOND_FIELD) {
148                 /* end-of-frame for interlaced display */
149                 event |= VENC_END_OF_FRAME;
150         }
151         last_event = event;
152 
153         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
154                 layer = disp_dev->dev[i];
155 
156                 if (!vb2_start_streaming_called(&layer->buffer_queue))
157                         continue;
158 
159                 if (layer->layer_first_int) {
160                         layer->layer_first_int = 0;
161                         continue;
162                 }
163                 /* Check the field format */
164                 if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
165                         (event & VENC_END_OF_FRAME)) {
166                         /* Progressive mode */
167 
168                         vpbe_isr_even_field(disp_dev, layer);
169                         vpbe_isr_odd_field(disp_dev, layer);
170                 } else {
171                 /* Interlaced mode */
172 
173                         layer->field_id ^= 1;
174                         if (event & VENC_FIRST_FIELD)
175                                 fid = 0;
176                         else
177                                 fid = 1;
178 
179                         /*
180                         * If field id does not match with store
181                         * field id
182                         */
183                         if (fid != layer->field_id) {
184                                 /* Make them in sync */
185                                 layer->field_id = fid;
186                                 continue;
187                         }
188                         /*
189                         * device field id and local field id are
190                         * in sync. If this is even field
191                         */
192                         if (0 == fid)
193                                 vpbe_isr_even_field(disp_dev, layer);
194                         else  /* odd field */
195                                 vpbe_isr_odd_field(disp_dev, layer);
196                 }
197         }
198 
199         return IRQ_HANDLED;
200 }
201 
202 /*
203  * vpbe_buffer_prepare()
204  * This is the callback function called from vb2_qbuf() function
205  * the buffer is prepared and user space virtual address is converted into
206  * physical address
207  */
208 static int vpbe_buffer_prepare(struct vb2_buffer *vb)
209 {
210         struct vb2_queue *q = vb->vb2_queue;
211         struct vpbe_layer *layer = vb2_get_drv_priv(q);
212         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
213         unsigned long addr;
214 
215         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
216                                 "vpbe_buffer_prepare\n");
217 
218         vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
219         if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
220                 return -EINVAL;
221 
222         addr = vb2_dma_contig_plane_dma_addr(vb, 0);
223         if (!IS_ALIGNED(addr, 8)) {
224                 v4l2_err(&vpbe_dev->v4l2_dev,
225                          "buffer_prepare:offset is not aligned to 32 bytes\n");
226                 return -EINVAL;
227         }
228         return 0;
229 }
230 
231 /*
232  * vpbe_buffer_setup()
233  * This function allocates memory for the buffers
234  */
235 static int
236 vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
237                         unsigned int *nbuffers, unsigned int *nplanes,
238                         unsigned int sizes[], void *alloc_ctxs[])
239 
240 {
241         /* Get the file handle object and layer object */
242         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
243         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
244 
245         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
246 
247         if (fmt && fmt->fmt.pix.sizeimage < layer->pix_fmt.sizeimage)
248                 return -EINVAL;
249 
250         /* Store number of buffers allocated in numbuffer member */
251         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
252                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
253 
254         *nplanes = 1;
255         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : layer->pix_fmt.sizeimage;
256         alloc_ctxs[0] = layer->alloc_ctx;
257 
258         return 0;
259 }
260 
261 /*
262  * vpbe_buffer_queue()
263  * This function adds the buffer to DMA queue
264  */
265 static void vpbe_buffer_queue(struct vb2_buffer *vb)
266 {
267         /* Get the file handle object and layer object */
268         struct vpbe_disp_buffer *buf = container_of(vb,
269                                 struct vpbe_disp_buffer, vb);
270         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
271         struct vpbe_display *disp = layer->disp_dev;
272         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
273         unsigned long flags;
274 
275         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
276                         "vpbe_buffer_queue\n");
277 
278         /* add the buffer to the DMA queue */
279         spin_lock_irqsave(&disp->dma_queue_lock, flags);
280         list_add_tail(&buf->list, &layer->dma_queue);
281         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
282 }
283 
284 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
285 {
286         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
287         struct osd_state *osd_device = layer->disp_dev->osd_device;
288         int ret;
289 
290          osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
291 
292         /* Get the next frame from the buffer queue */
293         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
294                                 struct vpbe_disp_buffer, list);
295         /* Remove buffer from the buffer queue */
296         list_del(&layer->cur_frm->list);
297         /* Mark state of the current frame to active */
298         layer->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
299         /* Initialize field_id and started member */
300         layer->field_id = 0;
301 
302         /* Set parameters in OSD and VENC */
303         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
304         if (ret < 0) {
305                 struct vpbe_disp_buffer *buf, *tmp;
306 
307                 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_QUEUED);
308                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
309                         list_del(&buf->list);
310                         vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
311                 }
312 
313                 return ret;
314         }
315 
316         /*
317          * if request format is yuv420 semiplanar, need to
318          * enable both video windows
319          */
320         layer->layer_first_int = 1;
321 
322         return ret;
323 }
324 
325 static void vpbe_stop_streaming(struct vb2_queue *vq)
326 {
327         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
328         struct osd_state *osd_device = layer->disp_dev->osd_device;
329         struct vpbe_display *disp = layer->disp_dev;
330         unsigned long flags;
331 
332         if (!vb2_is_streaming(vq))
333                 return;
334 
335         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
336 
337         /* release all active buffers */
338         spin_lock_irqsave(&disp->dma_queue_lock, flags);
339         if (layer->cur_frm == layer->next_frm) {
340                 vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_ERROR);
341         } else {
342                 if (layer->cur_frm != NULL)
343                         vb2_buffer_done(&layer->cur_frm->vb,
344                                         VB2_BUF_STATE_ERROR);
345                 if (layer->next_frm != NULL)
346                         vb2_buffer_done(&layer->next_frm->vb,
347                                         VB2_BUF_STATE_ERROR);
348         }
349 
350         while (!list_empty(&layer->dma_queue)) {
351                 layer->next_frm = list_entry(layer->dma_queue.next,
352                                                 struct vpbe_disp_buffer, list);
353                 list_del(&layer->next_frm->list);
354                 vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR);
355         }
356         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
357 }
358 
359 static struct vb2_ops video_qops = {
360         .queue_setup = vpbe_buffer_queue_setup,
361         .wait_prepare = vb2_ops_wait_prepare,
362         .wait_finish = vb2_ops_wait_finish,
363         .buf_prepare = vpbe_buffer_prepare,
364         .start_streaming = vpbe_start_streaming,
365         .stop_streaming = vpbe_stop_streaming,
366         .buf_queue = vpbe_buffer_queue,
367 };
368 
369 static
370 struct vpbe_layer*
371 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
372                         struct vpbe_layer *layer)
373 {
374         enum vpbe_display_device_id thiswin, otherwin;
375         thiswin = layer->device_id;
376 
377         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
378         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
379         return disp_dev->dev[otherwin];
380 }
381 
382 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
383                         struct vpbe_layer *layer)
384 {
385         struct osd_layer_config *cfg  = &layer->layer_info.config;
386         struct osd_state *osd_device = disp_dev->osd_device;
387         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
388         unsigned long addr;
389         int ret;
390 
391         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb, 0);
392         /* Set address in the display registers */
393         osd_device->ops.start_layer(osd_device,
394                                     layer->layer_info.id,
395                                     addr,
396                                     disp_dev->cbcr_ofst);
397 
398         ret = osd_device->ops.enable_layer(osd_device,
399                                 layer->layer_info.id, 0);
400         if (ret < 0) {
401                 v4l2_err(&vpbe_dev->v4l2_dev,
402                         "Error in enabling osd window layer 0\n");
403                 return -1;
404         }
405 
406         /* Enable the window */
407         layer->layer_info.enable = 1;
408         if (cfg->pixfmt == PIXFMT_NV12) {
409                 struct vpbe_layer *otherlayer =
410                         _vpbe_display_get_other_win_layer(disp_dev, layer);
411 
412                 ret = osd_device->ops.enable_layer(osd_device,
413                                 otherlayer->layer_info.id, 1);
414                 if (ret < 0) {
415                         v4l2_err(&vpbe_dev->v4l2_dev,
416                                 "Error in enabling osd window layer 1\n");
417                         return -1;
418                 }
419                 otherlayer->layer_info.enable = 1;
420         }
421         return 0;
422 }
423 
424 static void
425 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
426                         struct vpbe_layer *layer,
427                         int expected_xsize, int expected_ysize)
428 {
429         struct display_layer_info *layer_info = &layer->layer_info;
430         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
431         struct osd_layer_config *cfg  = &layer->layer_info.config;
432         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
433         int calculated_xsize;
434         int h_exp = 0;
435         int v_exp = 0;
436         int h_scale;
437         int v_scale;
438 
439         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
440 
441         /*
442          * Application initially set the image format. Current display
443          * size is obtained from the vpbe display controller. expected_xsize
444          * and expected_ysize are set through S_CROP ioctl. Based on this,
445          * driver will calculate the scale factors for vertical and
446          * horizontal direction so that the image is displayed scaled
447          * and expanded. Application uses expansion to display the image
448          * in a square pixel. Otherwise it is displayed using displays
449          * pixel aspect ratio.It is expected that application chooses
450          * the crop coordinates for cropped or scaled display. if crop
451          * size is less than the image size, it is displayed cropped or
452          * it is displayed scaled and/or expanded.
453          *
454          * to begin with, set the crop window same as expected. Later we
455          * will override with scaled window size
456          */
457 
458         cfg->xsize = pixfmt->width;
459         cfg->ysize = pixfmt->height;
460         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
461         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
462         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
463         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
464 
465         if (pixfmt->width < expected_xsize) {
466                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
467                 if (h_scale < 2)
468                         h_scale = 1;
469                 else if (h_scale >= 4)
470                         h_scale = 4;
471                 else
472                         h_scale = 2;
473                 cfg->xsize *= h_scale;
474                 if (cfg->xsize < expected_xsize) {
475                         if ((standard_id & V4L2_STD_525_60) ||
476                         (standard_id & V4L2_STD_625_50)) {
477                                 calculated_xsize = (cfg->xsize *
478                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
479                                         VPBE_DISPLAY_H_EXP_RATIO_D;
480                                 if (calculated_xsize <= expected_xsize) {
481                                         h_exp = 1;
482                                         cfg->xsize = calculated_xsize;
483                                 }
484                         }
485                 }
486                 if (h_scale == 2)
487                         layer_info->h_zoom = ZOOM_X2;
488                 else if (h_scale == 4)
489                         layer_info->h_zoom = ZOOM_X4;
490                 if (h_exp)
491                         layer_info->h_exp = H_EXP_9_OVER_8;
492         } else {
493                 /* no scaling, only cropping. Set display area to crop area */
494                 cfg->xsize = expected_xsize;
495         }
496 
497         if (pixfmt->height < expected_ysize) {
498                 v_scale = expected_ysize / pixfmt->height;
499                 if (v_scale < 2)
500                         v_scale = 1;
501                 else if (v_scale >= 4)
502                         v_scale = 4;
503                 else
504                         v_scale = 2;
505                 cfg->ysize *= v_scale;
506                 if (cfg->ysize < expected_ysize) {
507                         if ((standard_id & V4L2_STD_625_50)) {
508                                 calculated_xsize = (cfg->ysize *
509                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
510                                         VPBE_DISPLAY_V_EXP_RATIO_D;
511                                 if (calculated_xsize <= expected_ysize) {
512                                         v_exp = 1;
513                                         cfg->ysize = calculated_xsize;
514                                 }
515                         }
516                 }
517                 if (v_scale == 2)
518                         layer_info->v_zoom = ZOOM_X2;
519                 else if (v_scale == 4)
520                         layer_info->v_zoom = ZOOM_X4;
521                 if (v_exp)
522                         layer_info->h_exp = V_EXP_6_OVER_5;
523         } else {
524                 /* no scaling, only cropping. Set display area to crop area */
525                 cfg->ysize = expected_ysize;
526         }
527         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
528                 "crop display xsize = %d, ysize = %d\n",
529                 cfg->xsize, cfg->ysize);
530 }
531 
532 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
533                         struct vpbe_layer *layer,
534                         int top, int left)
535 {
536         struct osd_layer_config *cfg = &layer->layer_info.config;
537         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
538 
539         cfg->xpos = min((unsigned int)left,
540                         vpbe_dev->current_timings.xres - cfg->xsize);
541         cfg->ypos = min((unsigned int)top,
542                         vpbe_dev->current_timings.yres - cfg->ysize);
543 
544         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
545                 "new xpos = %d, ypos = %d\n",
546                 cfg->xpos, cfg->ypos);
547 }
548 
549 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
550                         struct v4l2_rect *c)
551 {
552         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
553 
554         if ((c->width == 0) ||
555           ((c->width + c->left) > vpbe_dev->current_timings.xres))
556                 c->width = vpbe_dev->current_timings.xres - c->left;
557 
558         if ((c->height == 0) || ((c->height + c->top) >
559           vpbe_dev->current_timings.yres))
560                 c->height = vpbe_dev->current_timings.yres - c->top;
561 
562         /* window height must be even for interlaced display */
563         if (vpbe_dev->current_timings.interlaced)
564                 c->height &= (~0x01);
565 
566 }
567 
568 /**
569  * vpbe_try_format()
570  * If user application provides width and height, and have bytesperline set
571  * to zero, driver calculates bytesperline and sizeimage based on hardware
572  * limits.
573  */
574 static int vpbe_try_format(struct vpbe_display *disp_dev,
575                         struct v4l2_pix_format *pixfmt, int check)
576 {
577         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
578         int min_height = 1;
579         int min_width = 32;
580         int max_height;
581         int max_width;
582         int bpp;
583 
584         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
585             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
586                 /* choose default as V4L2_PIX_FMT_UYVY */
587                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
588 
589         /* Check the field format */
590         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
591                 (pixfmt->field != V4L2_FIELD_NONE)) {
592                 if (vpbe_dev->current_timings.interlaced)
593                         pixfmt->field = V4L2_FIELD_INTERLACED;
594                 else
595                         pixfmt->field = V4L2_FIELD_NONE;
596         }
597 
598         if (pixfmt->field == V4L2_FIELD_INTERLACED)
599                 min_height = 2;
600 
601         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
602                 bpp = 1;
603         else
604                 bpp = 2;
605 
606         max_width = vpbe_dev->current_timings.xres;
607         max_height = vpbe_dev->current_timings.yres;
608 
609         min_width /= bpp;
610 
611         if (!pixfmt->width || (pixfmt->width < min_width) ||
612                 (pixfmt->width > max_width)) {
613                 pixfmt->width = vpbe_dev->current_timings.xres;
614         }
615 
616         if (!pixfmt->height || (pixfmt->height  < min_height) ||
617                 (pixfmt->height  > max_height)) {
618                 pixfmt->height = vpbe_dev->current_timings.yres;
619         }
620 
621         if (pixfmt->bytesperline < (pixfmt->width * bpp))
622                 pixfmt->bytesperline = pixfmt->width * bpp;
623 
624         /* Make the bytesperline 32 byte aligned */
625         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
626 
627         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
628                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
629                                 (pixfmt->bytesperline * pixfmt->height >> 1);
630         else
631                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
632 
633         return 0;
634 }
635 
636 static int vpbe_display_querycap(struct file *file, void  *priv,
637                                struct v4l2_capability *cap)
638 {
639         struct vpbe_layer *layer = video_drvdata(file);
640         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
641 
642         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
643         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
644         snprintf(cap->driver, sizeof(cap->driver), "%s",
645                 dev_name(vpbe_dev->pdev));
646         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
647                  dev_name(vpbe_dev->pdev));
648         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
649 
650         return 0;
651 }
652 
653 static int vpbe_display_s_crop(struct file *file, void *priv,
654                              const struct v4l2_crop *crop)
655 {
656         struct vpbe_layer *layer = video_drvdata(file);
657         struct vpbe_display *disp_dev = layer->disp_dev;
658         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
659         struct osd_layer_config *cfg = &layer->layer_info.config;
660         struct osd_state *osd_device = disp_dev->osd_device;
661         struct v4l2_rect rect = crop->c;
662         int ret;
663 
664         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
665                 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
666 
667         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
668                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
669                 return -EINVAL;
670         }
671 
672         if (rect.top < 0)
673                 rect.top = 0;
674         if (rect.left < 0)
675                 rect.left = 0;
676 
677         vpbe_disp_check_window_params(disp_dev, &rect);
678 
679         osd_device->ops.get_layer_config(osd_device,
680                         layer->layer_info.id, cfg);
681 
682         vpbe_disp_calculate_scale_factor(disp_dev, layer,
683                                         rect.width,
684                                         rect.height);
685         vpbe_disp_adj_position(disp_dev, layer, rect.top,
686                                         rect.left);
687         ret = osd_device->ops.set_layer_config(osd_device,
688                                 layer->layer_info.id, cfg);
689         if (ret < 0) {
690                 v4l2_err(&vpbe_dev->v4l2_dev,
691                         "Error in set layer config:\n");
692                 return -EINVAL;
693         }
694 
695         /* apply zooming and h or v expansion */
696         osd_device->ops.set_zoom(osd_device,
697                         layer->layer_info.id,
698                         layer->layer_info.h_zoom,
699                         layer->layer_info.v_zoom);
700         ret = osd_device->ops.set_vid_expansion(osd_device,
701                         layer->layer_info.h_exp,
702                         layer->layer_info.v_exp);
703         if (ret < 0) {
704                 v4l2_err(&vpbe_dev->v4l2_dev,
705                 "Error in set vid expansion:\n");
706                 return -EINVAL;
707         }
708 
709         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
710                 (layer->layer_info.v_zoom != ZOOM_X1) ||
711                 (layer->layer_info.h_exp != H_EXP_OFF) ||
712                 (layer->layer_info.v_exp != V_EXP_OFF))
713                 /* Enable expansion filter */
714                 osd_device->ops.set_interpolation_filter(osd_device, 1);
715         else
716                 osd_device->ops.set_interpolation_filter(osd_device, 0);
717 
718         return 0;
719 }
720 
721 static int vpbe_display_g_crop(struct file *file, void *priv,
722                              struct v4l2_crop *crop)
723 {
724         struct vpbe_layer *layer = video_drvdata(file);
725         struct osd_layer_config *cfg = &layer->layer_info.config;
726         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
727         struct osd_state *osd_device = layer->disp_dev->osd_device;
728         struct v4l2_rect *rect = &crop->c;
729 
730         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
731                         "VIDIOC_G_CROP, layer id = %d\n",
732                         layer->device_id);
733 
734         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
735                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
736                 return -EINVAL;
737         }
738         osd_device->ops.get_layer_config(osd_device,
739                                 layer->layer_info.id, cfg);
740         rect->top = cfg->ypos;
741         rect->left = cfg->xpos;
742         rect->width = cfg->xsize;
743         rect->height = cfg->ysize;
744 
745         return 0;
746 }
747 
748 static int vpbe_display_cropcap(struct file *file, void *priv,
749                               struct v4l2_cropcap *cropcap)
750 {
751         struct vpbe_layer *layer = video_drvdata(file);
752         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
753 
754         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
755 
756         cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
757         cropcap->bounds.left = 0;
758         cropcap->bounds.top = 0;
759         cropcap->bounds.width = vpbe_dev->current_timings.xres;
760         cropcap->bounds.height = vpbe_dev->current_timings.yres;
761         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
762         cropcap->defrect = cropcap->bounds;
763         return 0;
764 }
765 
766 static int vpbe_display_g_fmt(struct file *file, void *priv,
767                                 struct v4l2_format *fmt)
768 {
769         struct vpbe_layer *layer = video_drvdata(file);
770         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
771 
772         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
773                         "VIDIOC_G_FMT, layer id = %d\n",
774                         layer->device_id);
775 
776         /* If buffer type is video output */
777         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
778                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
779                 return -EINVAL;
780         }
781         /* Fill in the information about format */
782         fmt->fmt.pix = layer->pix_fmt;
783 
784         return 0;
785 }
786 
787 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
788                                    struct v4l2_fmtdesc *fmt)
789 {
790         struct vpbe_layer *layer = video_drvdata(file);
791         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
792         unsigned int index = 0;
793 
794         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
795                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
796                                 layer->device_id);
797         if (fmt->index > 1) {
798                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
799                 return -EINVAL;
800         }
801 
802         /* Fill in the information about format */
803         index = fmt->index;
804         memset(fmt, 0, sizeof(*fmt));
805         fmt->index = index;
806         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
807         if (index == 0) {
808                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
809                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
810         } else {
811                 strcpy(fmt->description, "Y/CbCr 4:2:0");
812                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
813         }
814 
815         return 0;
816 }
817 
818 static int vpbe_display_s_fmt(struct file *file, void *priv,
819                                 struct v4l2_format *fmt)
820 {
821         struct vpbe_layer *layer = video_drvdata(file);
822         struct vpbe_display *disp_dev = layer->disp_dev;
823         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
824         struct osd_layer_config *cfg  = &layer->layer_info.config;
825         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
826         struct osd_state *osd_device = disp_dev->osd_device;
827         int ret;
828 
829         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
830                         "VIDIOC_S_FMT, layer id = %d\n",
831                         layer->device_id);
832 
833         if (vb2_is_busy(&layer->buffer_queue))
834                 return -EBUSY;
835 
836         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
837                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
838                 return -EINVAL;
839         }
840         /* Check for valid pixel format */
841         ret = vpbe_try_format(disp_dev, pixfmt, 1);
842         if (ret)
843                 return ret;
844 
845         /* YUV420 is requested, check availability of the
846         other video window */
847 
848         layer->pix_fmt = *pixfmt;
849         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
850                 struct vpbe_layer *otherlayer;
851 
852                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
853                 /* if other layer is available, only
854                  * claim it, do not configure it
855                  */
856                 ret = osd_device->ops.request_layer(osd_device,
857                                                     otherlayer->layer_info.id);
858                 if (ret < 0) {
859                         v4l2_err(&vpbe_dev->v4l2_dev,
860                                  "Display Manager failed to allocate layer\n");
861                         return -EBUSY;
862                 }
863         }
864 
865         /* Get osd layer config */
866         osd_device->ops.get_layer_config(osd_device,
867                         layer->layer_info.id, cfg);
868         /* Store the pixel format in the layer object */
869         cfg->xsize = pixfmt->width;
870         cfg->ysize = pixfmt->height;
871         cfg->line_length = pixfmt->bytesperline;
872         cfg->ypos = 0;
873         cfg->xpos = 0;
874         cfg->interlaced = vpbe_dev->current_timings.interlaced;
875 
876         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
877                 cfg->pixfmt = PIXFMT_YCBCRI;
878 
879         /* Change of the default pixel format for both video windows */
880         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
881                 struct vpbe_layer *otherlayer;
882                 cfg->pixfmt = PIXFMT_NV12;
883                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
884                                                                 layer);
885                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
886         }
887 
888         /* Set the layer config in the osd window */
889         ret = osd_device->ops.set_layer_config(osd_device,
890                                 layer->layer_info.id, cfg);
891         if (ret < 0) {
892                 v4l2_err(&vpbe_dev->v4l2_dev,
893                                 "Error in S_FMT params:\n");
894                 return -EINVAL;
895         }
896 
897         /* Readback and fill the local copy of current pix format */
898         osd_device->ops.get_layer_config(osd_device,
899                         layer->layer_info.id, cfg);
900 
901         return 0;
902 }
903 
904 static int vpbe_display_try_fmt(struct file *file, void *priv,
905                                   struct v4l2_format *fmt)
906 {
907         struct vpbe_layer *layer = video_drvdata(file);
908         struct vpbe_display *disp_dev = layer->disp_dev;
909         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
910         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
911 
912         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
913 
914         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
915                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
916                 return -EINVAL;
917         }
918 
919         /* Check for valid field format */
920         return  vpbe_try_format(disp_dev, pixfmt, 0);
921 
922 }
923 
924 /**
925  * vpbe_display_s_std - Set the given standard in the encoder
926  *
927  * Sets the standard if supported by the current encoder. Return the status.
928  * 0 - success & -EINVAL on error
929  */
930 static int vpbe_display_s_std(struct file *file, void *priv,
931                                 v4l2_std_id std_id)
932 {
933         struct vpbe_layer *layer = video_drvdata(file);
934         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
935         int ret;
936 
937         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
938 
939         if (vb2_is_busy(&layer->buffer_queue))
940                 return -EBUSY;
941 
942         if (NULL != vpbe_dev->ops.s_std) {
943                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
944                 if (ret) {
945                         v4l2_err(&vpbe_dev->v4l2_dev,
946                         "Failed to set standard for sub devices\n");
947                         return -EINVAL;
948                 }
949         } else {
950                 return -EINVAL;
951         }
952 
953         return 0;
954 }
955 
956 /**
957  * vpbe_display_g_std - Get the standard in the current encoder
958  *
959  * Get the standard in the current encoder. Return the status. 0 - success
960  * -EINVAL on error
961  */
962 static int vpbe_display_g_std(struct file *file, void *priv,
963                                 v4l2_std_id *std_id)
964 {
965         struct vpbe_layer *layer = video_drvdata(file);
966         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
967 
968         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
969 
970         /* Get the standard from the current encoder */
971         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
972                 *std_id = vpbe_dev->current_timings.std_id;
973                 return 0;
974         }
975 
976         return -EINVAL;
977 }
978 
979 /**
980  * vpbe_display_enum_output - enumerate outputs
981  *
982  * Enumerates the outputs available at the vpbe display
983  * returns the status, -EINVAL if end of output list
984  */
985 static int vpbe_display_enum_output(struct file *file, void *priv,
986                                     struct v4l2_output *output)
987 {
988         struct vpbe_layer *layer = video_drvdata(file);
989         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
990         int ret;
991 
992         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
993 
994         /* Enumerate outputs */
995 
996         if (NULL == vpbe_dev->ops.enum_outputs)
997                 return -EINVAL;
998 
999         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1000         if (ret) {
1001                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1002                         "Failed to enumerate outputs\n");
1003                 return -EINVAL;
1004         }
1005 
1006         return 0;
1007 }
1008 
1009 /**
1010  * vpbe_display_s_output - Set output to
1011  * the output specified by the index
1012  */
1013 static int vpbe_display_s_output(struct file *file, void *priv,
1014                                 unsigned int i)
1015 {
1016         struct vpbe_layer *layer = video_drvdata(file);
1017         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1018         int ret;
1019 
1020         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1021 
1022         if (vb2_is_busy(&layer->buffer_queue))
1023                 return -EBUSY;
1024 
1025         if (NULL == vpbe_dev->ops.set_output)
1026                 return -EINVAL;
1027 
1028         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1029         if (ret) {
1030                 v4l2_err(&vpbe_dev->v4l2_dev,
1031                         "Failed to set output for sub devices\n");
1032                 return -EINVAL;
1033         }
1034 
1035         return 0;
1036 }
1037 
1038 /**
1039  * vpbe_display_g_output - Get output from subdevice
1040  * for a given by the index
1041  */
1042 static int vpbe_display_g_output(struct file *file, void *priv,
1043                                 unsigned int *i)
1044 {
1045         struct vpbe_layer *layer = video_drvdata(file);
1046         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1047 
1048         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1049         /* Get the standard from the current encoder */
1050         *i = vpbe_dev->current_out_index;
1051 
1052         return 0;
1053 }
1054 
1055 /**
1056  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1057  *
1058  * enum the timings in the current encoder. Return the status. 0 - success
1059  * -EINVAL on error
1060  */
1061 static int
1062 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1063                         struct v4l2_enum_dv_timings *timings)
1064 {
1065         struct vpbe_layer *layer = video_drvdata(file);
1066         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1067         int ret;
1068 
1069         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1070 
1071         /* Enumerate outputs */
1072         if (NULL == vpbe_dev->ops.enum_dv_timings)
1073                 return -EINVAL;
1074 
1075         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1076         if (ret) {
1077                 v4l2_err(&vpbe_dev->v4l2_dev,
1078                         "Failed to enumerate dv timings info\n");
1079                 return -EINVAL;
1080         }
1081 
1082         return 0;
1083 }
1084 
1085 /**
1086  * vpbe_display_s_dv_timings - Set the dv timings
1087  *
1088  * Set the timings in the current encoder. Return the status. 0 - success
1089  * -EINVAL on error
1090  */
1091 static int
1092 vpbe_display_s_dv_timings(struct file *file, void *priv,
1093                                 struct v4l2_dv_timings *timings)
1094 {
1095         struct vpbe_layer *layer = video_drvdata(file);
1096         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1097         int ret;
1098 
1099         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1100 
1101         if (vb2_is_busy(&layer->buffer_queue))
1102                 return -EBUSY;
1103 
1104         /* Set the given standard in the encoder */
1105         if (!vpbe_dev->ops.s_dv_timings)
1106                 return -EINVAL;
1107 
1108         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1109         if (ret) {
1110                 v4l2_err(&vpbe_dev->v4l2_dev,
1111                         "Failed to set the dv timings info\n");
1112                 return -EINVAL;
1113         }
1114 
1115         return 0;
1116 }
1117 
1118 /**
1119  * vpbe_display_g_dv_timings - Set the dv timings
1120  *
1121  * Get the timings in the current encoder. Return the status. 0 - success
1122  * -EINVAL on error
1123  */
1124 static int
1125 vpbe_display_g_dv_timings(struct file *file, void *priv,
1126                                 struct v4l2_dv_timings *dv_timings)
1127 {
1128         struct vpbe_layer *layer = video_drvdata(file);
1129         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1130 
1131         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1132 
1133         /* Get the given standard in the encoder */
1134 
1135         if (vpbe_dev->current_timings.timings_type &
1136                                 VPBE_ENC_DV_TIMINGS) {
1137                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1138         } else {
1139                 return -EINVAL;
1140         }
1141 
1142         return 0;
1143 }
1144 
1145 /*
1146  * vpbe_display_open()
1147  * It creates object of file handle structure and stores it in private_data
1148  * member of filepointer
1149  */
1150 static int vpbe_display_open(struct file *file)
1151 {
1152         struct vpbe_layer *layer = video_drvdata(file);
1153         struct vpbe_display *disp_dev = layer->disp_dev;
1154         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1155         struct osd_state *osd_device = disp_dev->osd_device;
1156         int err;
1157 
1158         /* creating context for file descriptor */
1159         err = v4l2_fh_open(file);
1160         if (err) {
1161                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1162                 return err;
1163         }
1164 
1165         /* leaving if layer is already initialized */
1166         if (!v4l2_fh_is_singular_file(file))
1167                 return err;
1168 
1169         if (!layer->usrs) {
1170                 if (mutex_lock_interruptible(&layer->opslock))
1171                         return -ERESTARTSYS;
1172                 /* First claim the layer for this device */
1173                 err = osd_device->ops.request_layer(osd_device,
1174                                                 layer->layer_info.id);
1175                 mutex_unlock(&layer->opslock);
1176                 if (err < 0) {
1177                         /* Couldn't get layer */
1178                         v4l2_err(&vpbe_dev->v4l2_dev,
1179                                 "Display Manager failed to allocate layer\n");
1180                         v4l2_fh_release(file);
1181                         return -EINVAL;
1182                 }
1183         }
1184         /* Increment layer usrs counter */
1185         layer->usrs++;
1186         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1187                         "vpbe display device opened successfully\n");
1188         return 0;
1189 }
1190 
1191 /*
1192  * vpbe_display_release()
1193  * This function deletes buffer queue, frees the buffers and the davinci
1194  * display file * handle
1195  */
1196 static int vpbe_display_release(struct file *file)
1197 {
1198         struct vpbe_layer *layer = video_drvdata(file);
1199         struct osd_layer_config *cfg  = &layer->layer_info.config;
1200         struct vpbe_display *disp_dev = layer->disp_dev;
1201         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1202         struct osd_state *osd_device = disp_dev->osd_device;
1203 
1204         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1205 
1206         mutex_lock(&layer->opslock);
1207 
1208         osd_device->ops.disable_layer(osd_device,
1209                         layer->layer_info.id);
1210         /* Decrement layer usrs counter */
1211         layer->usrs--;
1212         /* If this file handle has initialize encoder device, reset it */
1213         if (!layer->usrs) {
1214                 if (cfg->pixfmt == PIXFMT_NV12) {
1215                         struct vpbe_layer *otherlayer;
1216                         otherlayer =
1217                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1218                         osd_device->ops.disable_layer(osd_device,
1219                                         otherlayer->layer_info.id);
1220                         osd_device->ops.release_layer(osd_device,
1221                                         otherlayer->layer_info.id);
1222                 }
1223                 osd_device->ops.disable_layer(osd_device,
1224                                 layer->layer_info.id);
1225                 osd_device->ops.release_layer(osd_device,
1226                                 layer->layer_info.id);
1227         }
1228 
1229         _vb2_fop_release(file, NULL);
1230         mutex_unlock(&layer->opslock);
1231 
1232         disp_dev->cbcr_ofst = 0;
1233 
1234         return 0;
1235 }
1236 
1237 /* vpbe capture ioctl operations */
1238 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1239         .vidioc_querycap         = vpbe_display_querycap,
1240         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1241         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1242         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1243         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1244 
1245         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1246         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1247         .vidioc_querybuf         = vb2_ioctl_querybuf,
1248         .vidioc_qbuf             = vb2_ioctl_qbuf,
1249         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1250         .vidioc_streamon         = vb2_ioctl_streamon,
1251         .vidioc_streamoff        = vb2_ioctl_streamoff,
1252         .vidioc_expbuf           = vb2_ioctl_expbuf,
1253 
1254         .vidioc_cropcap          = vpbe_display_cropcap,
1255         .vidioc_g_crop           = vpbe_display_g_crop,
1256         .vidioc_s_crop           = vpbe_display_s_crop,
1257 
1258         .vidioc_s_std            = vpbe_display_s_std,
1259         .vidioc_g_std            = vpbe_display_g_std,
1260 
1261         .vidioc_enum_output      = vpbe_display_enum_output,
1262         .vidioc_s_output         = vpbe_display_s_output,
1263         .vidioc_g_output         = vpbe_display_g_output,
1264 
1265         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1266         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1267         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1268 };
1269 
1270 static struct v4l2_file_operations vpbe_fops = {
1271         .owner = THIS_MODULE,
1272         .open = vpbe_display_open,
1273         .release = vpbe_display_release,
1274         .unlocked_ioctl = video_ioctl2,
1275         .mmap = vb2_fop_mmap,
1276         .poll =  vb2_fop_poll,
1277 };
1278 
1279 static int vpbe_device_get(struct device *dev, void *data)
1280 {
1281         struct platform_device *pdev = to_platform_device(dev);
1282         struct vpbe_display *vpbe_disp  = data;
1283 
1284         if (strcmp("vpbe_controller", pdev->name) == 0)
1285                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1286 
1287         if (strstr(pdev->name, "vpbe-osd") != NULL)
1288                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1289 
1290         return 0;
1291 }
1292 
1293 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1294                            struct platform_device *pdev)
1295 {
1296         struct vpbe_layer *vpbe_display_layer = NULL;
1297         struct video_device *vbd = NULL;
1298 
1299         /* Allocate memory for four plane display objects */
1300 
1301         disp_dev->dev[i] =
1302                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1303 
1304         /* If memory allocation fails, return error */
1305         if (!disp_dev->dev[i]) {
1306                 printk(KERN_ERR "ran out of memory\n");
1307                 return  -ENOMEM;
1308         }
1309         spin_lock_init(&disp_dev->dev[i]->irqlock);
1310         mutex_init(&disp_dev->dev[i]->opslock);
1311 
1312         /* Get the pointer to the layer object */
1313         vpbe_display_layer = disp_dev->dev[i];
1314         vbd = &vpbe_display_layer->video_dev;
1315         /* Initialize field of video device */
1316         vbd->release    = video_device_release_empty;
1317         vbd->fops       = &vpbe_fops;
1318         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1319         vbd->minor      = -1;
1320         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1321         vbd->lock       = &vpbe_display_layer->opslock;
1322         vbd->vfl_dir    = VFL_DIR_TX;
1323 
1324         if (disp_dev->vpbe_dev->current_timings.timings_type &
1325                         VPBE_ENC_STD)
1326                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1327 
1328         snprintf(vbd->name, sizeof(vbd->name),
1329                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1330                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1331                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1332                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1333 
1334         vpbe_display_layer->device_id = i;
1335 
1336         vpbe_display_layer->layer_info.id =
1337                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1338 
1339 
1340         return 0;
1341 }
1342 
1343 static int register_device(struct vpbe_layer *vpbe_display_layer,
1344                            struct vpbe_display *disp_dev,
1345                            struct platform_device *pdev)
1346 {
1347         int err;
1348 
1349         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1350                   "Trying to register VPBE display device.\n");
1351         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1352                   "layer=%x,layer->video_dev=%x\n",
1353                   (int)vpbe_display_layer,
1354                   (int)&vpbe_display_layer->video_dev);
1355 
1356         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1357         err = video_register_device(&vpbe_display_layer->video_dev,
1358                                     VFL_TYPE_GRABBER,
1359                                     -1);
1360         if (err)
1361                 return -ENODEV;
1362 
1363         vpbe_display_layer->disp_dev = disp_dev;
1364         /* set the driver data in platform device */
1365         platform_set_drvdata(pdev, disp_dev);
1366         video_set_drvdata(&vpbe_display_layer->video_dev,
1367                           vpbe_display_layer);
1368 
1369         return 0;
1370 }
1371 
1372 
1373 
1374 /*
1375  * vpbe_display_probe()
1376  * This function creates device entries by register itself to the V4L2 driver
1377  * and initializes fields of each layer objects
1378  */
1379 static int vpbe_display_probe(struct platform_device *pdev)
1380 {
1381         struct vpbe_display *disp_dev;
1382         struct v4l2_device *v4l2_dev;
1383         struct resource *res = NULL;
1384         struct vb2_queue *q;
1385         int k;
1386         int i;
1387         int err;
1388         int irq;
1389 
1390         printk(KERN_DEBUG "vpbe_display_probe\n");
1391         /* Allocate memory for vpbe_display */
1392         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1393                                 GFP_KERNEL);
1394         if (!disp_dev)
1395                 return -ENOMEM;
1396 
1397         spin_lock_init(&disp_dev->dma_queue_lock);
1398         /*
1399          * Scan all the platform devices to find the vpbe
1400          * controller device and get the vpbe_dev object
1401          */
1402         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1403                         vpbe_device_get);
1404         if (err < 0)
1405                 return err;
1406 
1407         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1408         /* Initialize the vpbe display controller */
1409         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1410                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1411                                                          disp_dev->vpbe_dev);
1412                 if (err) {
1413                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1414                         err = -ENOMEM;
1415                         goto probe_out;
1416                 }
1417         }
1418 
1419         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1420                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1421                         err = -ENODEV;
1422                         goto probe_out;
1423                 }
1424         }
1425 
1426         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1427         if (!res) {
1428                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1429                 err = -ENODEV;
1430                 goto probe_out;
1431         }
1432 
1433         irq = res->start;
1434         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1435                                VPBE_DISPLAY_DRIVER, disp_dev);
1436         if (err) {
1437                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1438                 goto probe_out;
1439         }
1440 
1441         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1442                 /* initialize vb2 queue */
1443                 q = &disp_dev->dev[i]->buffer_queue;
1444                 memset(q, 0, sizeof(*q));
1445                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1446                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1447                 q->drv_priv = disp_dev->dev[i];
1448                 q->ops = &video_qops;
1449                 q->mem_ops = &vb2_dma_contig_memops;
1450                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1451                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1452                 q->min_buffers_needed = 1;
1453                 q->lock = &disp_dev->dev[i]->opslock;
1454                 err = vb2_queue_init(q);
1455                 if (err) {
1456                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1457                         goto probe_out;
1458                 }
1459 
1460                 disp_dev->dev[i]->alloc_ctx =
1461                         vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev);
1462                 if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) {
1463                         v4l2_err(v4l2_dev, "Failed to get the context\n");
1464                         err = PTR_ERR(disp_dev->dev[i]->alloc_ctx);
1465                         goto probe_out;
1466                 }
1467 
1468                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1469 
1470                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1471                         err = -ENODEV;
1472                         goto probe_out;
1473                 }
1474         }
1475 
1476         v4l2_dbg(1, debug, v4l2_dev,
1477                  "Successfully completed the probing of vpbe v4l2 device\n");
1478 
1479         return 0;
1480 
1481 probe_out:
1482         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1483                 /* Unregister video device */
1484                 if (disp_dev->dev[k] != NULL) {
1485                         vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx);
1486                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1487                         kfree(disp_dev->dev[k]);
1488                 }
1489         }
1490         return err;
1491 }
1492 
1493 /*
1494  * vpbe_display_remove()
1495  * It un-register hardware layer from V4L2 driver
1496  */
1497 static int vpbe_display_remove(struct platform_device *pdev)
1498 {
1499         struct vpbe_layer *vpbe_display_layer;
1500         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1501         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1502         int i;
1503 
1504         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1505 
1506         /* deinitialize the vpbe display controller */
1507         if (NULL != vpbe_dev->ops.deinitialize)
1508                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1509         /* un-register device */
1510         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1511                 /* Get the pointer to the layer object */
1512                 vpbe_display_layer = disp_dev->dev[i];
1513                 vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx);
1514                 /* Unregister video device */
1515                 video_unregister_device(&vpbe_display_layer->video_dev);
1516 
1517         }
1518         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1519                 kfree(disp_dev->dev[i]);
1520                 disp_dev->dev[i] = NULL;
1521         }
1522 
1523         return 0;
1524 }
1525 
1526 static struct platform_driver vpbe_display_driver = {
1527         .driver = {
1528                 .name = VPBE_DISPLAY_DRIVER,
1529                 .bus = &platform_bus_type,
1530         },
1531         .probe = vpbe_display_probe,
1532         .remove = vpbe_display_remove,
1533 };
1534 
1535 module_platform_driver(vpbe_display_driver);
1536 
1537 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1538 MODULE_LICENSE("GPL");
1539 MODULE_AUTHOR("Texas Instruments");
1540 

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