Version:  2.0.40 2.2.26 2.4.37 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 4.9

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_SELECTION ioctl. Based on this,
444          * driver will calculate the scale factors for vertical and
445          * horizontal direction so that the image is displayed scaled
446          * and expanded. Application uses expansion to display the image
447          * in a square pixel. Otherwise it is displayed using displays
448          * pixel aspect ratio.It is expected that application chooses
449          * the crop coordinates for cropped or scaled display. if crop
450          * size is less than the image size, it is displayed cropped or
451          * it is displayed scaled and/or expanded.
452          *
453          * to begin with, set the crop window same as expected. Later we
454          * will override with scaled window size
455          */
456 
457         cfg->xsize = pixfmt->width;
458         cfg->ysize = pixfmt->height;
459         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
460         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
461         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
462         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
463 
464         if (pixfmt->width < expected_xsize) {
465                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
466                 if (h_scale < 2)
467                         h_scale = 1;
468                 else if (h_scale >= 4)
469                         h_scale = 4;
470                 else
471                         h_scale = 2;
472                 cfg->xsize *= h_scale;
473                 if (cfg->xsize < expected_xsize) {
474                         if ((standard_id & V4L2_STD_525_60) ||
475                         (standard_id & V4L2_STD_625_50)) {
476                                 calculated_xsize = (cfg->xsize *
477                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
478                                         VPBE_DISPLAY_H_EXP_RATIO_D;
479                                 if (calculated_xsize <= expected_xsize) {
480                                         h_exp = 1;
481                                         cfg->xsize = calculated_xsize;
482                                 }
483                         }
484                 }
485                 if (h_scale == 2)
486                         layer_info->h_zoom = ZOOM_X2;
487                 else if (h_scale == 4)
488                         layer_info->h_zoom = ZOOM_X4;
489                 if (h_exp)
490                         layer_info->h_exp = H_EXP_9_OVER_8;
491         } else {
492                 /* no scaling, only cropping. Set display area to crop area */
493                 cfg->xsize = expected_xsize;
494         }
495 
496         if (pixfmt->height < expected_ysize) {
497                 v_scale = expected_ysize / pixfmt->height;
498                 if (v_scale < 2)
499                         v_scale = 1;
500                 else if (v_scale >= 4)
501                         v_scale = 4;
502                 else
503                         v_scale = 2;
504                 cfg->ysize *= v_scale;
505                 if (cfg->ysize < expected_ysize) {
506                         if ((standard_id & V4L2_STD_625_50)) {
507                                 calculated_xsize = (cfg->ysize *
508                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
509                                         VPBE_DISPLAY_V_EXP_RATIO_D;
510                                 if (calculated_xsize <= expected_ysize) {
511                                         v_exp = 1;
512                                         cfg->ysize = calculated_xsize;
513                                 }
514                         }
515                 }
516                 if (v_scale == 2)
517                         layer_info->v_zoom = ZOOM_X2;
518                 else if (v_scale == 4)
519                         layer_info->v_zoom = ZOOM_X4;
520                 if (v_exp)
521                         layer_info->h_exp = V_EXP_6_OVER_5;
522         } else {
523                 /* no scaling, only cropping. Set display area to crop area */
524                 cfg->ysize = expected_ysize;
525         }
526         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
527                 "crop display xsize = %d, ysize = %d\n",
528                 cfg->xsize, cfg->ysize);
529 }
530 
531 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
532                         struct vpbe_layer *layer,
533                         int top, int left)
534 {
535         struct osd_layer_config *cfg = &layer->layer_info.config;
536         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
537 
538         cfg->xpos = min((unsigned int)left,
539                         vpbe_dev->current_timings.xres - cfg->xsize);
540         cfg->ypos = min((unsigned int)top,
541                         vpbe_dev->current_timings.yres - cfg->ysize);
542 
543         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
544                 "new xpos = %d, ypos = %d\n",
545                 cfg->xpos, cfg->ypos);
546 }
547 
548 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
549                         struct v4l2_rect *c)
550 {
551         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
552 
553         if ((c->width == 0) ||
554           ((c->width + c->left) > vpbe_dev->current_timings.xres))
555                 c->width = vpbe_dev->current_timings.xres - c->left;
556 
557         if ((c->height == 0) || ((c->height + c->top) >
558           vpbe_dev->current_timings.yres))
559                 c->height = vpbe_dev->current_timings.yres - c->top;
560 
561         /* window height must be even for interlaced display */
562         if (vpbe_dev->current_timings.interlaced)
563                 c->height &= (~0x01);
564 
565 }
566 
567 /**
568  * vpbe_try_format()
569  * If user application provides width and height, and have bytesperline set
570  * to zero, driver calculates bytesperline and sizeimage based on hardware
571  * limits.
572  */
573 static int vpbe_try_format(struct vpbe_display *disp_dev,
574                         struct v4l2_pix_format *pixfmt, int check)
575 {
576         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
577         int min_height = 1;
578         int min_width = 32;
579         int max_height;
580         int max_width;
581         int bpp;
582 
583         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
584             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
585                 /* choose default as V4L2_PIX_FMT_UYVY */
586                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
587 
588         /* Check the field format */
589         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
590                 (pixfmt->field != V4L2_FIELD_NONE)) {
591                 if (vpbe_dev->current_timings.interlaced)
592                         pixfmt->field = V4L2_FIELD_INTERLACED;
593                 else
594                         pixfmt->field = V4L2_FIELD_NONE;
595         }
596 
597         if (pixfmt->field == V4L2_FIELD_INTERLACED)
598                 min_height = 2;
599 
600         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
601                 bpp = 1;
602         else
603                 bpp = 2;
604 
605         max_width = vpbe_dev->current_timings.xres;
606         max_height = vpbe_dev->current_timings.yres;
607 
608         min_width /= bpp;
609 
610         if (!pixfmt->width || (pixfmt->width < min_width) ||
611                 (pixfmt->width > max_width)) {
612                 pixfmt->width = vpbe_dev->current_timings.xres;
613         }
614 
615         if (!pixfmt->height || (pixfmt->height  < min_height) ||
616                 (pixfmt->height  > max_height)) {
617                 pixfmt->height = vpbe_dev->current_timings.yres;
618         }
619 
620         if (pixfmt->bytesperline < (pixfmt->width * bpp))
621                 pixfmt->bytesperline = pixfmt->width * bpp;
622 
623         /* Make the bytesperline 32 byte aligned */
624         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
625 
626         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
627                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
628                                 (pixfmt->bytesperline * pixfmt->height >> 1);
629         else
630                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
631 
632         return 0;
633 }
634 
635 static int vpbe_display_querycap(struct file *file, void  *priv,
636                                struct v4l2_capability *cap)
637 {
638         struct vpbe_layer *layer = video_drvdata(file);
639         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
640 
641         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
642         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
643         snprintf(cap->driver, sizeof(cap->driver), "%s",
644                 dev_name(vpbe_dev->pdev));
645         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
646                  dev_name(vpbe_dev->pdev));
647         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
648 
649         return 0;
650 }
651 
652 static int vpbe_display_s_selection(struct file *file, void *priv,
653                              struct v4l2_selection *sel)
654 {
655         struct vpbe_layer *layer = video_drvdata(file);
656         struct vpbe_display *disp_dev = layer->disp_dev;
657         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
658         struct osd_layer_config *cfg = &layer->layer_info.config;
659         struct osd_state *osd_device = disp_dev->osd_device;
660         struct v4l2_rect rect = sel->r;
661         int ret;
662 
663         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
664                 "VIDIOC_S_SELECTION, layer id = %d\n", layer->device_id);
665 
666         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
667             sel->target != V4L2_SEL_TGT_CROP)
668                 return -EINVAL;
669 
670         if (rect.top < 0)
671                 rect.top = 0;
672         if (rect.left < 0)
673                 rect.left = 0;
674 
675         vpbe_disp_check_window_params(disp_dev, &rect);
676 
677         osd_device->ops.get_layer_config(osd_device,
678                         layer->layer_info.id, cfg);
679 
680         vpbe_disp_calculate_scale_factor(disp_dev, layer,
681                                         rect.width,
682                                         rect.height);
683         vpbe_disp_adj_position(disp_dev, layer, rect.top,
684                                         rect.left);
685         ret = osd_device->ops.set_layer_config(osd_device,
686                                 layer->layer_info.id, cfg);
687         if (ret < 0) {
688                 v4l2_err(&vpbe_dev->v4l2_dev,
689                         "Error in set layer config:\n");
690                 return -EINVAL;
691         }
692 
693         /* apply zooming and h or v expansion */
694         osd_device->ops.set_zoom(osd_device,
695                         layer->layer_info.id,
696                         layer->layer_info.h_zoom,
697                         layer->layer_info.v_zoom);
698         ret = osd_device->ops.set_vid_expansion(osd_device,
699                         layer->layer_info.h_exp,
700                         layer->layer_info.v_exp);
701         if (ret < 0) {
702                 v4l2_err(&vpbe_dev->v4l2_dev,
703                 "Error in set vid expansion:\n");
704                 return -EINVAL;
705         }
706 
707         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
708                 (layer->layer_info.v_zoom != ZOOM_X1) ||
709                 (layer->layer_info.h_exp != H_EXP_OFF) ||
710                 (layer->layer_info.v_exp != V_EXP_OFF))
711                 /* Enable expansion filter */
712                 osd_device->ops.set_interpolation_filter(osd_device, 1);
713         else
714                 osd_device->ops.set_interpolation_filter(osd_device, 0);
715 
716         sel->r = rect;
717         return 0;
718 }
719 
720 static int vpbe_display_g_selection(struct file *file, void *priv,
721                                     struct v4l2_selection *sel)
722 {
723         struct vpbe_layer *layer = video_drvdata(file);
724         struct osd_layer_config *cfg = &layer->layer_info.config;
725         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
726         struct osd_state *osd_device = layer->disp_dev->osd_device;
727         struct v4l2_rect *rect = &sel->r;
728 
729         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
730                         "VIDIOC_G_SELECTION, layer id = %d\n",
731                         layer->device_id);
732 
733         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
734                 return -EINVAL;
735 
736         switch (sel->target) {
737         case V4L2_SEL_TGT_CROP:
738                 osd_device->ops.get_layer_config(osd_device,
739                                                  layer->layer_info.id, cfg);
740                 rect->top = cfg->ypos;
741                 rect->left = cfg->xpos;
742                 rect->width = cfg->xsize;
743                 rect->height = cfg->ysize;
744                 break;
745         case V4L2_SEL_TGT_CROP_DEFAULT:
746         case V4L2_SEL_TGT_CROP_BOUNDS:
747                 rect->left = 0;
748                 rect->top = 0;
749                 rect->width = vpbe_dev->current_timings.xres;
750                 rect->height = vpbe_dev->current_timings.yres;
751                 break;
752         default:
753                 return -EINVAL;
754         }
755 
756         return 0;
757 }
758 
759 static int vpbe_display_cropcap(struct file *file, void *priv,
760                               struct v4l2_cropcap *cropcap)
761 {
762         struct vpbe_layer *layer = video_drvdata(file);
763         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
764 
765         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
766 
767         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
768                 return -EINVAL;
769 
770         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
771         return 0;
772 }
773 
774 static int vpbe_display_g_fmt(struct file *file, void *priv,
775                                 struct v4l2_format *fmt)
776 {
777         struct vpbe_layer *layer = video_drvdata(file);
778         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
779 
780         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
781                         "VIDIOC_G_FMT, layer id = %d\n",
782                         layer->device_id);
783 
784         /* If buffer type is video output */
785         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
786                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
787                 return -EINVAL;
788         }
789         /* Fill in the information about format */
790         fmt->fmt.pix = layer->pix_fmt;
791 
792         return 0;
793 }
794 
795 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
796                                    struct v4l2_fmtdesc *fmt)
797 {
798         struct vpbe_layer *layer = video_drvdata(file);
799         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
800         unsigned int index = 0;
801 
802         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
803                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
804                                 layer->device_id);
805         if (fmt->index > 1) {
806                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
807                 return -EINVAL;
808         }
809 
810         /* Fill in the information about format */
811         index = fmt->index;
812         memset(fmt, 0, sizeof(*fmt));
813         fmt->index = index;
814         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
815         if (index == 0) {
816                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
817                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
818         } else {
819                 strcpy(fmt->description, "Y/CbCr 4:2:0");
820                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
821         }
822 
823         return 0;
824 }
825 
826 static int vpbe_display_s_fmt(struct file *file, void *priv,
827                                 struct v4l2_format *fmt)
828 {
829         struct vpbe_layer *layer = video_drvdata(file);
830         struct vpbe_display *disp_dev = layer->disp_dev;
831         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
832         struct osd_layer_config *cfg  = &layer->layer_info.config;
833         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
834         struct osd_state *osd_device = disp_dev->osd_device;
835         int ret;
836 
837         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
838                         "VIDIOC_S_FMT, layer id = %d\n",
839                         layer->device_id);
840 
841         if (vb2_is_busy(&layer->buffer_queue))
842                 return -EBUSY;
843 
844         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
845                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
846                 return -EINVAL;
847         }
848         /* Check for valid pixel format */
849         ret = vpbe_try_format(disp_dev, pixfmt, 1);
850         if (ret)
851                 return ret;
852 
853         /* YUV420 is requested, check availability of the
854         other video window */
855 
856         layer->pix_fmt = *pixfmt;
857         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
858                 struct vpbe_layer *otherlayer;
859 
860                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
861                 /* if other layer is available, only
862                  * claim it, do not configure it
863                  */
864                 ret = osd_device->ops.request_layer(osd_device,
865                                                     otherlayer->layer_info.id);
866                 if (ret < 0) {
867                         v4l2_err(&vpbe_dev->v4l2_dev,
868                                  "Display Manager failed to allocate layer\n");
869                         return -EBUSY;
870                 }
871         }
872 
873         /* Get osd layer config */
874         osd_device->ops.get_layer_config(osd_device,
875                         layer->layer_info.id, cfg);
876         /* Store the pixel format in the layer object */
877         cfg->xsize = pixfmt->width;
878         cfg->ysize = pixfmt->height;
879         cfg->line_length = pixfmt->bytesperline;
880         cfg->ypos = 0;
881         cfg->xpos = 0;
882         cfg->interlaced = vpbe_dev->current_timings.interlaced;
883 
884         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
885                 cfg->pixfmt = PIXFMT_YCBCRI;
886 
887         /* Change of the default pixel format for both video windows */
888         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
889                 struct vpbe_layer *otherlayer;
890                 cfg->pixfmt = PIXFMT_NV12;
891                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
892                                                                 layer);
893                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
894         }
895 
896         /* Set the layer config in the osd window */
897         ret = osd_device->ops.set_layer_config(osd_device,
898                                 layer->layer_info.id, cfg);
899         if (ret < 0) {
900                 v4l2_err(&vpbe_dev->v4l2_dev,
901                                 "Error in S_FMT params:\n");
902                 return -EINVAL;
903         }
904 
905         /* Readback and fill the local copy of current pix format */
906         osd_device->ops.get_layer_config(osd_device,
907                         layer->layer_info.id, cfg);
908 
909         return 0;
910 }
911 
912 static int vpbe_display_try_fmt(struct file *file, void *priv,
913                                   struct v4l2_format *fmt)
914 {
915         struct vpbe_layer *layer = video_drvdata(file);
916         struct vpbe_display *disp_dev = layer->disp_dev;
917         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
918         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
919 
920         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
921 
922         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
923                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
924                 return -EINVAL;
925         }
926 
927         /* Check for valid field format */
928         return  vpbe_try_format(disp_dev, pixfmt, 0);
929 
930 }
931 
932 /**
933  * vpbe_display_s_std - Set the given standard in the encoder
934  *
935  * Sets the standard if supported by the current encoder. Return the status.
936  * 0 - success & -EINVAL on error
937  */
938 static int vpbe_display_s_std(struct file *file, void *priv,
939                                 v4l2_std_id std_id)
940 {
941         struct vpbe_layer *layer = video_drvdata(file);
942         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
943         int ret;
944 
945         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
946 
947         if (vb2_is_busy(&layer->buffer_queue))
948                 return -EBUSY;
949 
950         if (NULL != vpbe_dev->ops.s_std) {
951                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
952                 if (ret) {
953                         v4l2_err(&vpbe_dev->v4l2_dev,
954                         "Failed to set standard for sub devices\n");
955                         return -EINVAL;
956                 }
957         } else {
958                 return -EINVAL;
959         }
960 
961         return 0;
962 }
963 
964 /**
965  * vpbe_display_g_std - Get the standard in the current encoder
966  *
967  * Get the standard in the current encoder. Return the status. 0 - success
968  * -EINVAL on error
969  */
970 static int vpbe_display_g_std(struct file *file, void *priv,
971                                 v4l2_std_id *std_id)
972 {
973         struct vpbe_layer *layer = video_drvdata(file);
974         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
975 
976         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
977 
978         /* Get the standard from the current encoder */
979         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
980                 *std_id = vpbe_dev->current_timings.std_id;
981                 return 0;
982         }
983 
984         return -EINVAL;
985 }
986 
987 /**
988  * vpbe_display_enum_output - enumerate outputs
989  *
990  * Enumerates the outputs available at the vpbe display
991  * returns the status, -EINVAL if end of output list
992  */
993 static int vpbe_display_enum_output(struct file *file, void *priv,
994                                     struct v4l2_output *output)
995 {
996         struct vpbe_layer *layer = video_drvdata(file);
997         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
998         int ret;
999 
1000         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
1001 
1002         /* Enumerate outputs */
1003 
1004         if (NULL == vpbe_dev->ops.enum_outputs)
1005                 return -EINVAL;
1006 
1007         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1008         if (ret) {
1009                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1010                         "Failed to enumerate outputs\n");
1011                 return -EINVAL;
1012         }
1013 
1014         return 0;
1015 }
1016 
1017 /**
1018  * vpbe_display_s_output - Set output to
1019  * the output specified by the index
1020  */
1021 static int vpbe_display_s_output(struct file *file, void *priv,
1022                                 unsigned int i)
1023 {
1024         struct vpbe_layer *layer = video_drvdata(file);
1025         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1026         int ret;
1027 
1028         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1029 
1030         if (vb2_is_busy(&layer->buffer_queue))
1031                 return -EBUSY;
1032 
1033         if (NULL == vpbe_dev->ops.set_output)
1034                 return -EINVAL;
1035 
1036         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1037         if (ret) {
1038                 v4l2_err(&vpbe_dev->v4l2_dev,
1039                         "Failed to set output for sub devices\n");
1040                 return -EINVAL;
1041         }
1042 
1043         return 0;
1044 }
1045 
1046 /**
1047  * vpbe_display_g_output - Get output from subdevice
1048  * for a given by the index
1049  */
1050 static int vpbe_display_g_output(struct file *file, void *priv,
1051                                 unsigned int *i)
1052 {
1053         struct vpbe_layer *layer = video_drvdata(file);
1054         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1055 
1056         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1057         /* Get the standard from the current encoder */
1058         *i = vpbe_dev->current_out_index;
1059 
1060         return 0;
1061 }
1062 
1063 /**
1064  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1065  *
1066  * enum the timings in the current encoder. Return the status. 0 - success
1067  * -EINVAL on error
1068  */
1069 static int
1070 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1071                         struct v4l2_enum_dv_timings *timings)
1072 {
1073         struct vpbe_layer *layer = video_drvdata(file);
1074         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1075         int ret;
1076 
1077         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1078 
1079         /* Enumerate outputs */
1080         if (NULL == vpbe_dev->ops.enum_dv_timings)
1081                 return -EINVAL;
1082 
1083         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1084         if (ret) {
1085                 v4l2_err(&vpbe_dev->v4l2_dev,
1086                         "Failed to enumerate dv timings info\n");
1087                 return -EINVAL;
1088         }
1089 
1090         return 0;
1091 }
1092 
1093 /**
1094  * vpbe_display_s_dv_timings - Set the dv timings
1095  *
1096  * Set the timings in the current encoder. Return the status. 0 - success
1097  * -EINVAL on error
1098  */
1099 static int
1100 vpbe_display_s_dv_timings(struct file *file, void *priv,
1101                                 struct v4l2_dv_timings *timings)
1102 {
1103         struct vpbe_layer *layer = video_drvdata(file);
1104         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1105         int ret;
1106 
1107         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1108 
1109         if (vb2_is_busy(&layer->buffer_queue))
1110                 return -EBUSY;
1111 
1112         /* Set the given standard in the encoder */
1113         if (!vpbe_dev->ops.s_dv_timings)
1114                 return -EINVAL;
1115 
1116         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1117         if (ret) {
1118                 v4l2_err(&vpbe_dev->v4l2_dev,
1119                         "Failed to set the dv timings info\n");
1120                 return -EINVAL;
1121         }
1122 
1123         return 0;
1124 }
1125 
1126 /**
1127  * vpbe_display_g_dv_timings - Set the dv timings
1128  *
1129  * Get the timings in the current encoder. Return the status. 0 - success
1130  * -EINVAL on error
1131  */
1132 static int
1133 vpbe_display_g_dv_timings(struct file *file, void *priv,
1134                                 struct v4l2_dv_timings *dv_timings)
1135 {
1136         struct vpbe_layer *layer = video_drvdata(file);
1137         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1138 
1139         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1140 
1141         /* Get the given standard in the encoder */
1142 
1143         if (vpbe_dev->current_timings.timings_type &
1144                                 VPBE_ENC_DV_TIMINGS) {
1145                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1146         } else {
1147                 return -EINVAL;
1148         }
1149 
1150         return 0;
1151 }
1152 
1153 /*
1154  * vpbe_display_open()
1155  * It creates object of file handle structure and stores it in private_data
1156  * member of filepointer
1157  */
1158 static int vpbe_display_open(struct file *file)
1159 {
1160         struct vpbe_layer *layer = video_drvdata(file);
1161         struct vpbe_display *disp_dev = layer->disp_dev;
1162         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1163         struct osd_state *osd_device = disp_dev->osd_device;
1164         int err;
1165 
1166         /* creating context for file descriptor */
1167         err = v4l2_fh_open(file);
1168         if (err) {
1169                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1170                 return err;
1171         }
1172 
1173         /* leaving if layer is already initialized */
1174         if (!v4l2_fh_is_singular_file(file))
1175                 return err;
1176 
1177         if (!layer->usrs) {
1178                 if (mutex_lock_interruptible(&layer->opslock))
1179                         return -ERESTARTSYS;
1180                 /* First claim the layer for this device */
1181                 err = osd_device->ops.request_layer(osd_device,
1182                                                 layer->layer_info.id);
1183                 mutex_unlock(&layer->opslock);
1184                 if (err < 0) {
1185                         /* Couldn't get layer */
1186                         v4l2_err(&vpbe_dev->v4l2_dev,
1187                                 "Display Manager failed to allocate layer\n");
1188                         v4l2_fh_release(file);
1189                         return -EINVAL;
1190                 }
1191         }
1192         /* Increment layer usrs counter */
1193         layer->usrs++;
1194         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1195                         "vpbe display device opened successfully\n");
1196         return 0;
1197 }
1198 
1199 /*
1200  * vpbe_display_release()
1201  * This function deletes buffer queue, frees the buffers and the davinci
1202  * display file * handle
1203  */
1204 static int vpbe_display_release(struct file *file)
1205 {
1206         struct vpbe_layer *layer = video_drvdata(file);
1207         struct osd_layer_config *cfg  = &layer->layer_info.config;
1208         struct vpbe_display *disp_dev = layer->disp_dev;
1209         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1210         struct osd_state *osd_device = disp_dev->osd_device;
1211 
1212         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1213 
1214         mutex_lock(&layer->opslock);
1215 
1216         osd_device->ops.disable_layer(osd_device,
1217                         layer->layer_info.id);
1218         /* Decrement layer usrs counter */
1219         layer->usrs--;
1220         /* If this file handle has initialize encoder device, reset it */
1221         if (!layer->usrs) {
1222                 if (cfg->pixfmt == PIXFMT_NV12) {
1223                         struct vpbe_layer *otherlayer;
1224                         otherlayer =
1225                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1226                         osd_device->ops.disable_layer(osd_device,
1227                                         otherlayer->layer_info.id);
1228                         osd_device->ops.release_layer(osd_device,
1229                                         otherlayer->layer_info.id);
1230                 }
1231                 osd_device->ops.disable_layer(osd_device,
1232                                 layer->layer_info.id);
1233                 osd_device->ops.release_layer(osd_device,
1234                                 layer->layer_info.id);
1235         }
1236 
1237         _vb2_fop_release(file, NULL);
1238         mutex_unlock(&layer->opslock);
1239 
1240         disp_dev->cbcr_ofst = 0;
1241 
1242         return 0;
1243 }
1244 
1245 /* vpbe capture ioctl operations */
1246 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1247         .vidioc_querycap         = vpbe_display_querycap,
1248         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1249         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1250         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1251         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1252 
1253         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1254         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1255         .vidioc_querybuf         = vb2_ioctl_querybuf,
1256         .vidioc_qbuf             = vb2_ioctl_qbuf,
1257         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1258         .vidioc_streamon         = vb2_ioctl_streamon,
1259         .vidioc_streamoff        = vb2_ioctl_streamoff,
1260         .vidioc_expbuf           = vb2_ioctl_expbuf,
1261 
1262         .vidioc_cropcap          = vpbe_display_cropcap,
1263         .vidioc_g_selection      = vpbe_display_g_selection,
1264         .vidioc_s_selection      = vpbe_display_s_selection,
1265 
1266         .vidioc_s_std            = vpbe_display_s_std,
1267         .vidioc_g_std            = vpbe_display_g_std,
1268 
1269         .vidioc_enum_output      = vpbe_display_enum_output,
1270         .vidioc_s_output         = vpbe_display_s_output,
1271         .vidioc_g_output         = vpbe_display_g_output,
1272 
1273         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1274         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1275         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1276 };
1277 
1278 static struct v4l2_file_operations vpbe_fops = {
1279         .owner = THIS_MODULE,
1280         .open = vpbe_display_open,
1281         .release = vpbe_display_release,
1282         .unlocked_ioctl = video_ioctl2,
1283         .mmap = vb2_fop_mmap,
1284         .poll =  vb2_fop_poll,
1285 };
1286 
1287 static int vpbe_device_get(struct device *dev, void *data)
1288 {
1289         struct platform_device *pdev = to_platform_device(dev);
1290         struct vpbe_display *vpbe_disp  = data;
1291 
1292         if (strcmp("vpbe_controller", pdev->name) == 0)
1293                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1294 
1295         if (strstr(pdev->name, "vpbe-osd") != NULL)
1296                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1297 
1298         return 0;
1299 }
1300 
1301 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1302                            struct platform_device *pdev)
1303 {
1304         struct vpbe_layer *vpbe_display_layer = NULL;
1305         struct video_device *vbd = NULL;
1306 
1307         /* Allocate memory for four plane display objects */
1308 
1309         disp_dev->dev[i] =
1310                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1311 
1312         /* If memory allocation fails, return error */
1313         if (!disp_dev->dev[i]) {
1314                 printk(KERN_ERR "ran out of memory\n");
1315                 return  -ENOMEM;
1316         }
1317         spin_lock_init(&disp_dev->dev[i]->irqlock);
1318         mutex_init(&disp_dev->dev[i]->opslock);
1319 
1320         /* Get the pointer to the layer object */
1321         vpbe_display_layer = disp_dev->dev[i];
1322         vbd = &vpbe_display_layer->video_dev;
1323         /* Initialize field of video device */
1324         vbd->release    = video_device_release_empty;
1325         vbd->fops       = &vpbe_fops;
1326         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1327         vbd->minor      = -1;
1328         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1329         vbd->lock       = &vpbe_display_layer->opslock;
1330         vbd->vfl_dir    = VFL_DIR_TX;
1331 
1332         if (disp_dev->vpbe_dev->current_timings.timings_type &
1333                         VPBE_ENC_STD)
1334                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1335 
1336         snprintf(vbd->name, sizeof(vbd->name),
1337                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1338                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1339                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1340                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1341 
1342         vpbe_display_layer->device_id = i;
1343 
1344         vpbe_display_layer->layer_info.id =
1345                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1346 
1347 
1348         return 0;
1349 }
1350 
1351 static int register_device(struct vpbe_layer *vpbe_display_layer,
1352                            struct vpbe_display *disp_dev,
1353                            struct platform_device *pdev)
1354 {
1355         int err;
1356 
1357         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1358                   "Trying to register VPBE display device.\n");
1359         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1360                   "layer=%x,layer->video_dev=%x\n",
1361                   (int)vpbe_display_layer,
1362                   (int)&vpbe_display_layer->video_dev);
1363 
1364         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1365         err = video_register_device(&vpbe_display_layer->video_dev,
1366                                     VFL_TYPE_GRABBER,
1367                                     -1);
1368         if (err)
1369                 return -ENODEV;
1370 
1371         vpbe_display_layer->disp_dev = disp_dev;
1372         /* set the driver data in platform device */
1373         platform_set_drvdata(pdev, disp_dev);
1374         video_set_drvdata(&vpbe_display_layer->video_dev,
1375                           vpbe_display_layer);
1376 
1377         return 0;
1378 }
1379 
1380 
1381 
1382 /*
1383  * vpbe_display_probe()
1384  * This function creates device entries by register itself to the V4L2 driver
1385  * and initializes fields of each layer objects
1386  */
1387 static int vpbe_display_probe(struct platform_device *pdev)
1388 {
1389         struct vpbe_display *disp_dev;
1390         struct v4l2_device *v4l2_dev;
1391         struct resource *res = NULL;
1392         struct vb2_queue *q;
1393         int k;
1394         int i;
1395         int err;
1396         int irq;
1397 
1398         printk(KERN_DEBUG "vpbe_display_probe\n");
1399         /* Allocate memory for vpbe_display */
1400         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1401                                 GFP_KERNEL);
1402         if (!disp_dev)
1403                 return -ENOMEM;
1404 
1405         spin_lock_init(&disp_dev->dma_queue_lock);
1406         /*
1407          * Scan all the platform devices to find the vpbe
1408          * controller device and get the vpbe_dev object
1409          */
1410         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1411                         vpbe_device_get);
1412         if (err < 0)
1413                 return err;
1414 
1415         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1416         /* Initialize the vpbe display controller */
1417         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1418                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1419                                                          disp_dev->vpbe_dev);
1420                 if (err) {
1421                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1422                         err = -ENOMEM;
1423                         goto probe_out;
1424                 }
1425         }
1426 
1427         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1428                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1429                         err = -ENODEV;
1430                         goto probe_out;
1431                 }
1432         }
1433 
1434         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1435         if (!res) {
1436                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1437                 err = -ENODEV;
1438                 goto probe_out;
1439         }
1440 
1441         irq = res->start;
1442         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1443                                VPBE_DISPLAY_DRIVER, disp_dev);
1444         if (err) {
1445                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1446                 goto probe_out;
1447         }
1448 
1449         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1450                 /* initialize vb2 queue */
1451                 q = &disp_dev->dev[i]->buffer_queue;
1452                 memset(q, 0, sizeof(*q));
1453                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1454                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1455                 q->drv_priv = disp_dev->dev[i];
1456                 q->ops = &video_qops;
1457                 q->mem_ops = &vb2_dma_contig_memops;
1458                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1459                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1460                 q->min_buffers_needed = 1;
1461                 q->lock = &disp_dev->dev[i]->opslock;
1462                 q->dev = disp_dev->vpbe_dev->pdev;
1463                 err = vb2_queue_init(q);
1464                 if (err) {
1465                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1466                         goto probe_out;
1467                 }
1468 
1469                 INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
1470 
1471                 if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
1472                         err = -ENODEV;
1473                         goto probe_out;
1474                 }
1475         }
1476 
1477         v4l2_dbg(1, debug, v4l2_dev,
1478                  "Successfully completed the probing of vpbe v4l2 device\n");
1479 
1480         return 0;
1481 
1482 probe_out:
1483         for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
1484                 /* Unregister video device */
1485                 if (disp_dev->dev[k] != NULL) {
1486                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1487                         kfree(disp_dev->dev[k]);
1488                 }
1489         }
1490         return err;
1491 }
1492 
1493 /*
1494  * vpbe_display_remove()
1495  * It un-register hardware layer from V4L2 driver
1496  */
1497 static int vpbe_display_remove(struct platform_device *pdev)
1498 {
1499         struct vpbe_layer *vpbe_display_layer;
1500         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1501         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1502         int i;
1503 
1504         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1505 
1506         /* deinitialize the vpbe display controller */
1507         if (NULL != vpbe_dev->ops.deinitialize)
1508                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1509         /* un-register device */
1510         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1511                 /* Get the pointer to the layer object */
1512                 vpbe_display_layer = disp_dev->dev[i];
1513                 /* Unregister video device */
1514                 video_unregister_device(&vpbe_display_layer->video_dev);
1515 
1516         }
1517         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1518                 kfree(disp_dev->dev[i]);
1519                 disp_dev->dev[i] = NULL;
1520         }
1521 
1522         return 0;
1523 }
1524 
1525 static struct platform_driver vpbe_display_driver = {
1526         .driver = {
1527                 .name = VPBE_DISPLAY_DRIVER,
1528                 .bus = &platform_bus_type,
1529         },
1530         .probe = vpbe_display_probe,
1531         .remove = vpbe_display_remove,
1532 };
1533 
1534 module_platform_driver(vpbe_display_driver);
1535 
1536 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1537 MODULE_LICENSE("GPL");
1538 MODULE_AUTHOR("Texas Instruments");
1539 

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