Version:  2.0.40 2.2.26 2.4.37 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 4.1 4.2 4.3 4.4

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         v4l2_get_timestamp(&layer->cur_frm->vb.timestamp);
 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, const void *parg,
232                         unsigned int *nbuffers, unsigned int *nplanes,
233                         unsigned int sizes[], void *alloc_ctxs[])
234 
235 {
236         const struct v4l2_format *fmt = parg;
237         /* Get the file handle object and layer object */
238         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
239         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
240 
241         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
242 
243         if (fmt && fmt->fmt.pix.sizeimage < layer->pix_fmt.sizeimage)
244                 return -EINVAL;
245 
246         /* Store number of buffers allocated in numbuffer member */
247         if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
248                 *nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
249 
250         *nplanes = 1;
251         sizes[0] = fmt ? fmt->fmt.pix.sizeimage : layer->pix_fmt.sizeimage;
252         alloc_ctxs[0] = layer->alloc_ctx;
253 
254         return 0;
255 }
256 
257 /*
258  * vpbe_buffer_queue()
259  * This function adds the buffer to DMA queue
260  */
261 static void vpbe_buffer_queue(struct vb2_buffer *vb)
262 {
263         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
264         /* Get the file handle object and layer object */
265         struct vpbe_disp_buffer *buf = container_of(vbuf,
266                                 struct vpbe_disp_buffer, vb);
267         struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
268         struct vpbe_display *disp = layer->disp_dev;
269         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
270         unsigned long flags;
271 
272         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
273                         "vpbe_buffer_queue\n");
274 
275         /* add the buffer to the DMA queue */
276         spin_lock_irqsave(&disp->dma_queue_lock, flags);
277         list_add_tail(&buf->list, &layer->dma_queue);
278         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
279 }
280 
281 static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
282 {
283         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
284         struct osd_state *osd_device = layer->disp_dev->osd_device;
285         int ret;
286 
287          osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
288 
289         /* Get the next frame from the buffer queue */
290         layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
291                                 struct vpbe_disp_buffer, list);
292         /* Remove buffer from the buffer queue */
293         list_del(&layer->cur_frm->list);
294         /* Mark state of the current frame to active */
295         layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
296         /* Initialize field_id and started member */
297         layer->field_id = 0;
298 
299         /* Set parameters in OSD and VENC */
300         ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
301         if (ret < 0) {
302                 struct vpbe_disp_buffer *buf, *tmp;
303 
304                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
305                                 VB2_BUF_STATE_QUEUED);
306                 list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
307                         list_del(&buf->list);
308                         vb2_buffer_done(&buf->vb.vb2_buf,
309                                         VB2_BUF_STATE_QUEUED);
310                 }
311 
312                 return ret;
313         }
314 
315         /*
316          * if request format is yuv420 semiplanar, need to
317          * enable both video windows
318          */
319         layer->layer_first_int = 1;
320 
321         return ret;
322 }
323 
324 static void vpbe_stop_streaming(struct vb2_queue *vq)
325 {
326         struct vpbe_layer *layer = vb2_get_drv_priv(vq);
327         struct osd_state *osd_device = layer->disp_dev->osd_device;
328         struct vpbe_display *disp = layer->disp_dev;
329         unsigned long flags;
330 
331         if (!vb2_is_streaming(vq))
332                 return;
333 
334         osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
335 
336         /* release all active buffers */
337         spin_lock_irqsave(&disp->dma_queue_lock, flags);
338         if (layer->cur_frm == layer->next_frm) {
339                 vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
340                                 VB2_BUF_STATE_ERROR);
341         } else {
342                 if (layer->cur_frm != NULL)
343                         vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
344                                         VB2_BUF_STATE_ERROR);
345                 if (layer->next_frm != NULL)
346                         vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
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,
355                                 VB2_BUF_STATE_ERROR);
356         }
357         spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
358 }
359 
360 static struct vb2_ops video_qops = {
361         .queue_setup = vpbe_buffer_queue_setup,
362         .wait_prepare = vb2_ops_wait_prepare,
363         .wait_finish = vb2_ops_wait_finish,
364         .buf_prepare = vpbe_buffer_prepare,
365         .start_streaming = vpbe_start_streaming,
366         .stop_streaming = vpbe_stop_streaming,
367         .buf_queue = vpbe_buffer_queue,
368 };
369 
370 static
371 struct vpbe_layer*
372 _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
373                         struct vpbe_layer *layer)
374 {
375         enum vpbe_display_device_id thiswin, otherwin;
376         thiswin = layer->device_id;
377 
378         otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
379         VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
380         return disp_dev->dev[otherwin];
381 }
382 
383 static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
384                         struct vpbe_layer *layer)
385 {
386         struct osd_layer_config *cfg  = &layer->layer_info.config;
387         struct osd_state *osd_device = disp_dev->osd_device;
388         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
389         unsigned long addr;
390         int ret;
391 
392         addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
393         /* Set address in the display registers */
394         osd_device->ops.start_layer(osd_device,
395                                     layer->layer_info.id,
396                                     addr,
397                                     disp_dev->cbcr_ofst);
398 
399         ret = osd_device->ops.enable_layer(osd_device,
400                                 layer->layer_info.id, 0);
401         if (ret < 0) {
402                 v4l2_err(&vpbe_dev->v4l2_dev,
403                         "Error in enabling osd window layer 0\n");
404                 return -1;
405         }
406 
407         /* Enable the window */
408         layer->layer_info.enable = 1;
409         if (cfg->pixfmt == PIXFMT_NV12) {
410                 struct vpbe_layer *otherlayer =
411                         _vpbe_display_get_other_win_layer(disp_dev, layer);
412 
413                 ret = osd_device->ops.enable_layer(osd_device,
414                                 otherlayer->layer_info.id, 1);
415                 if (ret < 0) {
416                         v4l2_err(&vpbe_dev->v4l2_dev,
417                                 "Error in enabling osd window layer 1\n");
418                         return -1;
419                 }
420                 otherlayer->layer_info.enable = 1;
421         }
422         return 0;
423 }
424 
425 static void
426 vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
427                         struct vpbe_layer *layer,
428                         int expected_xsize, int expected_ysize)
429 {
430         struct display_layer_info *layer_info = &layer->layer_info;
431         struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
432         struct osd_layer_config *cfg  = &layer->layer_info.config;
433         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
434         int calculated_xsize;
435         int h_exp = 0;
436         int v_exp = 0;
437         int h_scale;
438         int v_scale;
439 
440         v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
441 
442         /*
443          * Application initially set the image format. Current display
444          * size is obtained from the vpbe display controller. expected_xsize
445          * and expected_ysize are set through S_CROP ioctl. Based on this,
446          * driver will calculate the scale factors for vertical and
447          * horizontal direction so that the image is displayed scaled
448          * and expanded. Application uses expansion to display the image
449          * in a square pixel. Otherwise it is displayed using displays
450          * pixel aspect ratio.It is expected that application chooses
451          * the crop coordinates for cropped or scaled display. if crop
452          * size is less than the image size, it is displayed cropped or
453          * it is displayed scaled and/or expanded.
454          *
455          * to begin with, set the crop window same as expected. Later we
456          * will override with scaled window size
457          */
458 
459         cfg->xsize = pixfmt->width;
460         cfg->ysize = pixfmt->height;
461         layer_info->h_zoom = ZOOM_X1;   /* no horizontal zoom */
462         layer_info->v_zoom = ZOOM_X1;   /* no horizontal zoom */
463         layer_info->h_exp = H_EXP_OFF;  /* no horizontal zoom */
464         layer_info->v_exp = V_EXP_OFF;  /* no horizontal zoom */
465 
466         if (pixfmt->width < expected_xsize) {
467                 h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
468                 if (h_scale < 2)
469                         h_scale = 1;
470                 else if (h_scale >= 4)
471                         h_scale = 4;
472                 else
473                         h_scale = 2;
474                 cfg->xsize *= h_scale;
475                 if (cfg->xsize < expected_xsize) {
476                         if ((standard_id & V4L2_STD_525_60) ||
477                         (standard_id & V4L2_STD_625_50)) {
478                                 calculated_xsize = (cfg->xsize *
479                                         VPBE_DISPLAY_H_EXP_RATIO_N) /
480                                         VPBE_DISPLAY_H_EXP_RATIO_D;
481                                 if (calculated_xsize <= expected_xsize) {
482                                         h_exp = 1;
483                                         cfg->xsize = calculated_xsize;
484                                 }
485                         }
486                 }
487                 if (h_scale == 2)
488                         layer_info->h_zoom = ZOOM_X2;
489                 else if (h_scale == 4)
490                         layer_info->h_zoom = ZOOM_X4;
491                 if (h_exp)
492                         layer_info->h_exp = H_EXP_9_OVER_8;
493         } else {
494                 /* no scaling, only cropping. Set display area to crop area */
495                 cfg->xsize = expected_xsize;
496         }
497 
498         if (pixfmt->height < expected_ysize) {
499                 v_scale = expected_ysize / pixfmt->height;
500                 if (v_scale < 2)
501                         v_scale = 1;
502                 else if (v_scale >= 4)
503                         v_scale = 4;
504                 else
505                         v_scale = 2;
506                 cfg->ysize *= v_scale;
507                 if (cfg->ysize < expected_ysize) {
508                         if ((standard_id & V4L2_STD_625_50)) {
509                                 calculated_xsize = (cfg->ysize *
510                                         VPBE_DISPLAY_V_EXP_RATIO_N) /
511                                         VPBE_DISPLAY_V_EXP_RATIO_D;
512                                 if (calculated_xsize <= expected_ysize) {
513                                         v_exp = 1;
514                                         cfg->ysize = calculated_xsize;
515                                 }
516                         }
517                 }
518                 if (v_scale == 2)
519                         layer_info->v_zoom = ZOOM_X2;
520                 else if (v_scale == 4)
521                         layer_info->v_zoom = ZOOM_X4;
522                 if (v_exp)
523                         layer_info->h_exp = V_EXP_6_OVER_5;
524         } else {
525                 /* no scaling, only cropping. Set display area to crop area */
526                 cfg->ysize = expected_ysize;
527         }
528         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
529                 "crop display xsize = %d, ysize = %d\n",
530                 cfg->xsize, cfg->ysize);
531 }
532 
533 static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
534                         struct vpbe_layer *layer,
535                         int top, int left)
536 {
537         struct osd_layer_config *cfg = &layer->layer_info.config;
538         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
539 
540         cfg->xpos = min((unsigned int)left,
541                         vpbe_dev->current_timings.xres - cfg->xsize);
542         cfg->ypos = min((unsigned int)top,
543                         vpbe_dev->current_timings.yres - cfg->ysize);
544 
545         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
546                 "new xpos = %d, ypos = %d\n",
547                 cfg->xpos, cfg->ypos);
548 }
549 
550 static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
551                         struct v4l2_rect *c)
552 {
553         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
554 
555         if ((c->width == 0) ||
556           ((c->width + c->left) > vpbe_dev->current_timings.xres))
557                 c->width = vpbe_dev->current_timings.xres - c->left;
558 
559         if ((c->height == 0) || ((c->height + c->top) >
560           vpbe_dev->current_timings.yres))
561                 c->height = vpbe_dev->current_timings.yres - c->top;
562 
563         /* window height must be even for interlaced display */
564         if (vpbe_dev->current_timings.interlaced)
565                 c->height &= (~0x01);
566 
567 }
568 
569 /**
570  * vpbe_try_format()
571  * If user application provides width and height, and have bytesperline set
572  * to zero, driver calculates bytesperline and sizeimage based on hardware
573  * limits.
574  */
575 static int vpbe_try_format(struct vpbe_display *disp_dev,
576                         struct v4l2_pix_format *pixfmt, int check)
577 {
578         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
579         int min_height = 1;
580         int min_width = 32;
581         int max_height;
582         int max_width;
583         int bpp;
584 
585         if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
586             (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
587                 /* choose default as V4L2_PIX_FMT_UYVY */
588                 pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
589 
590         /* Check the field format */
591         if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
592                 (pixfmt->field != V4L2_FIELD_NONE)) {
593                 if (vpbe_dev->current_timings.interlaced)
594                         pixfmt->field = V4L2_FIELD_INTERLACED;
595                 else
596                         pixfmt->field = V4L2_FIELD_NONE;
597         }
598 
599         if (pixfmt->field == V4L2_FIELD_INTERLACED)
600                 min_height = 2;
601 
602         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
603                 bpp = 1;
604         else
605                 bpp = 2;
606 
607         max_width = vpbe_dev->current_timings.xres;
608         max_height = vpbe_dev->current_timings.yres;
609 
610         min_width /= bpp;
611 
612         if (!pixfmt->width || (pixfmt->width < min_width) ||
613                 (pixfmt->width > max_width)) {
614                 pixfmt->width = vpbe_dev->current_timings.xres;
615         }
616 
617         if (!pixfmt->height || (pixfmt->height  < min_height) ||
618                 (pixfmt->height  > max_height)) {
619                 pixfmt->height = vpbe_dev->current_timings.yres;
620         }
621 
622         if (pixfmt->bytesperline < (pixfmt->width * bpp))
623                 pixfmt->bytesperline = pixfmt->width * bpp;
624 
625         /* Make the bytesperline 32 byte aligned */
626         pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
627 
628         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
629                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
630                                 (pixfmt->bytesperline * pixfmt->height >> 1);
631         else
632                 pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
633 
634         return 0;
635 }
636 
637 static int vpbe_display_querycap(struct file *file, void  *priv,
638                                struct v4l2_capability *cap)
639 {
640         struct vpbe_layer *layer = video_drvdata(file);
641         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
642 
643         cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
644         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
645         snprintf(cap->driver, sizeof(cap->driver), "%s",
646                 dev_name(vpbe_dev->pdev));
647         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
648                  dev_name(vpbe_dev->pdev));
649         strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
650 
651         return 0;
652 }
653 
654 static int vpbe_display_s_crop(struct file *file, void *priv,
655                              const struct v4l2_crop *crop)
656 {
657         struct vpbe_layer *layer = video_drvdata(file);
658         struct vpbe_display *disp_dev = layer->disp_dev;
659         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
660         struct osd_layer_config *cfg = &layer->layer_info.config;
661         struct osd_state *osd_device = disp_dev->osd_device;
662         struct v4l2_rect rect = crop->c;
663         int ret;
664 
665         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
666                 "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
667 
668         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
669                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
670                 return -EINVAL;
671         }
672 
673         if (rect.top < 0)
674                 rect.top = 0;
675         if (rect.left < 0)
676                 rect.left = 0;
677 
678         vpbe_disp_check_window_params(disp_dev, &rect);
679 
680         osd_device->ops.get_layer_config(osd_device,
681                         layer->layer_info.id, cfg);
682 
683         vpbe_disp_calculate_scale_factor(disp_dev, layer,
684                                         rect.width,
685                                         rect.height);
686         vpbe_disp_adj_position(disp_dev, layer, rect.top,
687                                         rect.left);
688         ret = osd_device->ops.set_layer_config(osd_device,
689                                 layer->layer_info.id, cfg);
690         if (ret < 0) {
691                 v4l2_err(&vpbe_dev->v4l2_dev,
692                         "Error in set layer config:\n");
693                 return -EINVAL;
694         }
695 
696         /* apply zooming and h or v expansion */
697         osd_device->ops.set_zoom(osd_device,
698                         layer->layer_info.id,
699                         layer->layer_info.h_zoom,
700                         layer->layer_info.v_zoom);
701         ret = osd_device->ops.set_vid_expansion(osd_device,
702                         layer->layer_info.h_exp,
703                         layer->layer_info.v_exp);
704         if (ret < 0) {
705                 v4l2_err(&vpbe_dev->v4l2_dev,
706                 "Error in set vid expansion:\n");
707                 return -EINVAL;
708         }
709 
710         if ((layer->layer_info.h_zoom != ZOOM_X1) ||
711                 (layer->layer_info.v_zoom != ZOOM_X1) ||
712                 (layer->layer_info.h_exp != H_EXP_OFF) ||
713                 (layer->layer_info.v_exp != V_EXP_OFF))
714                 /* Enable expansion filter */
715                 osd_device->ops.set_interpolation_filter(osd_device, 1);
716         else
717                 osd_device->ops.set_interpolation_filter(osd_device, 0);
718 
719         return 0;
720 }
721 
722 static int vpbe_display_g_crop(struct file *file, void *priv,
723                              struct v4l2_crop *crop)
724 {
725         struct vpbe_layer *layer = video_drvdata(file);
726         struct osd_layer_config *cfg = &layer->layer_info.config;
727         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
728         struct osd_state *osd_device = layer->disp_dev->osd_device;
729         struct v4l2_rect *rect = &crop->c;
730 
731         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
732                         "VIDIOC_G_CROP, layer id = %d\n",
733                         layer->device_id);
734 
735         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
736                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
737                 return -EINVAL;
738         }
739         osd_device->ops.get_layer_config(osd_device,
740                                 layer->layer_info.id, cfg);
741         rect->top = cfg->ypos;
742         rect->left = cfg->xpos;
743         rect->width = cfg->xsize;
744         rect->height = cfg->ysize;
745 
746         return 0;
747 }
748 
749 static int vpbe_display_cropcap(struct file *file, void *priv,
750                               struct v4l2_cropcap *cropcap)
751 {
752         struct vpbe_layer *layer = video_drvdata(file);
753         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
754 
755         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
756 
757         cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
758         cropcap->bounds.left = 0;
759         cropcap->bounds.top = 0;
760         cropcap->bounds.width = vpbe_dev->current_timings.xres;
761         cropcap->bounds.height = vpbe_dev->current_timings.yres;
762         cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
763         cropcap->defrect = cropcap->bounds;
764         return 0;
765 }
766 
767 static int vpbe_display_g_fmt(struct file *file, void *priv,
768                                 struct v4l2_format *fmt)
769 {
770         struct vpbe_layer *layer = video_drvdata(file);
771         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
772 
773         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
774                         "VIDIOC_G_FMT, layer id = %d\n",
775                         layer->device_id);
776 
777         /* If buffer type is video output */
778         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
779                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
780                 return -EINVAL;
781         }
782         /* Fill in the information about format */
783         fmt->fmt.pix = layer->pix_fmt;
784 
785         return 0;
786 }
787 
788 static int vpbe_display_enum_fmt(struct file *file, void  *priv,
789                                    struct v4l2_fmtdesc *fmt)
790 {
791         struct vpbe_layer *layer = video_drvdata(file);
792         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
793         unsigned int index = 0;
794 
795         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
796                                 "VIDIOC_ENUM_FMT, layer id = %d\n",
797                                 layer->device_id);
798         if (fmt->index > 1) {
799                 v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
800                 return -EINVAL;
801         }
802 
803         /* Fill in the information about format */
804         index = fmt->index;
805         memset(fmt, 0, sizeof(*fmt));
806         fmt->index = index;
807         fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
808         if (index == 0) {
809                 strcpy(fmt->description, "YUV 4:2:2 - UYVY");
810                 fmt->pixelformat = V4L2_PIX_FMT_UYVY;
811         } else {
812                 strcpy(fmt->description, "Y/CbCr 4:2:0");
813                 fmt->pixelformat = V4L2_PIX_FMT_NV12;
814         }
815 
816         return 0;
817 }
818 
819 static int vpbe_display_s_fmt(struct file *file, void *priv,
820                                 struct v4l2_format *fmt)
821 {
822         struct vpbe_layer *layer = video_drvdata(file);
823         struct vpbe_display *disp_dev = layer->disp_dev;
824         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
825         struct osd_layer_config *cfg  = &layer->layer_info.config;
826         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
827         struct osd_state *osd_device = disp_dev->osd_device;
828         int ret;
829 
830         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
831                         "VIDIOC_S_FMT, layer id = %d\n",
832                         layer->device_id);
833 
834         if (vb2_is_busy(&layer->buffer_queue))
835                 return -EBUSY;
836 
837         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
838                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
839                 return -EINVAL;
840         }
841         /* Check for valid pixel format */
842         ret = vpbe_try_format(disp_dev, pixfmt, 1);
843         if (ret)
844                 return ret;
845 
846         /* YUV420 is requested, check availability of the
847         other video window */
848 
849         layer->pix_fmt = *pixfmt;
850         if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
851                 struct vpbe_layer *otherlayer;
852 
853                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
854                 /* if other layer is available, only
855                  * claim it, do not configure it
856                  */
857                 ret = osd_device->ops.request_layer(osd_device,
858                                                     otherlayer->layer_info.id);
859                 if (ret < 0) {
860                         v4l2_err(&vpbe_dev->v4l2_dev,
861                                  "Display Manager failed to allocate layer\n");
862                         return -EBUSY;
863                 }
864         }
865 
866         /* Get osd layer config */
867         osd_device->ops.get_layer_config(osd_device,
868                         layer->layer_info.id, cfg);
869         /* Store the pixel format in the layer object */
870         cfg->xsize = pixfmt->width;
871         cfg->ysize = pixfmt->height;
872         cfg->line_length = pixfmt->bytesperline;
873         cfg->ypos = 0;
874         cfg->xpos = 0;
875         cfg->interlaced = vpbe_dev->current_timings.interlaced;
876 
877         if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
878                 cfg->pixfmt = PIXFMT_YCBCRI;
879 
880         /* Change of the default pixel format for both video windows */
881         if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
882                 struct vpbe_layer *otherlayer;
883                 cfg->pixfmt = PIXFMT_NV12;
884                 otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
885                                                                 layer);
886                 otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
887         }
888 
889         /* Set the layer config in the osd window */
890         ret = osd_device->ops.set_layer_config(osd_device,
891                                 layer->layer_info.id, cfg);
892         if (ret < 0) {
893                 v4l2_err(&vpbe_dev->v4l2_dev,
894                                 "Error in S_FMT params:\n");
895                 return -EINVAL;
896         }
897 
898         /* Readback and fill the local copy of current pix format */
899         osd_device->ops.get_layer_config(osd_device,
900                         layer->layer_info.id, cfg);
901 
902         return 0;
903 }
904 
905 static int vpbe_display_try_fmt(struct file *file, void *priv,
906                                   struct v4l2_format *fmt)
907 {
908         struct vpbe_layer *layer = video_drvdata(file);
909         struct vpbe_display *disp_dev = layer->disp_dev;
910         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
911         struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
912 
913         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
914 
915         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
916                 v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
917                 return -EINVAL;
918         }
919 
920         /* Check for valid field format */
921         return  vpbe_try_format(disp_dev, pixfmt, 0);
922 
923 }
924 
925 /**
926  * vpbe_display_s_std - Set the given standard in the encoder
927  *
928  * Sets the standard if supported by the current encoder. Return the status.
929  * 0 - success & -EINVAL on error
930  */
931 static int vpbe_display_s_std(struct file *file, void *priv,
932                                 v4l2_std_id std_id)
933 {
934         struct vpbe_layer *layer = video_drvdata(file);
935         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
936         int ret;
937 
938         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
939 
940         if (vb2_is_busy(&layer->buffer_queue))
941                 return -EBUSY;
942 
943         if (NULL != vpbe_dev->ops.s_std) {
944                 ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
945                 if (ret) {
946                         v4l2_err(&vpbe_dev->v4l2_dev,
947                         "Failed to set standard for sub devices\n");
948                         return -EINVAL;
949                 }
950         } else {
951                 return -EINVAL;
952         }
953 
954         return 0;
955 }
956 
957 /**
958  * vpbe_display_g_std - Get the standard in the current encoder
959  *
960  * Get the standard in the current encoder. Return the status. 0 - success
961  * -EINVAL on error
962  */
963 static int vpbe_display_g_std(struct file *file, void *priv,
964                                 v4l2_std_id *std_id)
965 {
966         struct vpbe_layer *layer = video_drvdata(file);
967         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
968 
969         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
970 
971         /* Get the standard from the current encoder */
972         if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
973                 *std_id = vpbe_dev->current_timings.std_id;
974                 return 0;
975         }
976 
977         return -EINVAL;
978 }
979 
980 /**
981  * vpbe_display_enum_output - enumerate outputs
982  *
983  * Enumerates the outputs available at the vpbe display
984  * returns the status, -EINVAL if end of output list
985  */
986 static int vpbe_display_enum_output(struct file *file, void *priv,
987                                     struct v4l2_output *output)
988 {
989         struct vpbe_layer *layer = video_drvdata(file);
990         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
991         int ret;
992 
993         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
994 
995         /* Enumerate outputs */
996 
997         if (NULL == vpbe_dev->ops.enum_outputs)
998                 return -EINVAL;
999 
1000         ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
1001         if (ret) {
1002                 v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1003                         "Failed to enumerate outputs\n");
1004                 return -EINVAL;
1005         }
1006 
1007         return 0;
1008 }
1009 
1010 /**
1011  * vpbe_display_s_output - Set output to
1012  * the output specified by the index
1013  */
1014 static int vpbe_display_s_output(struct file *file, void *priv,
1015                                 unsigned int i)
1016 {
1017         struct vpbe_layer *layer = video_drvdata(file);
1018         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1019         int ret;
1020 
1021         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
1022 
1023         if (vb2_is_busy(&layer->buffer_queue))
1024                 return -EBUSY;
1025 
1026         if (NULL == vpbe_dev->ops.set_output)
1027                 return -EINVAL;
1028 
1029         ret = vpbe_dev->ops.set_output(vpbe_dev, i);
1030         if (ret) {
1031                 v4l2_err(&vpbe_dev->v4l2_dev,
1032                         "Failed to set output for sub devices\n");
1033                 return -EINVAL;
1034         }
1035 
1036         return 0;
1037 }
1038 
1039 /**
1040  * vpbe_display_g_output - Get output from subdevice
1041  * for a given by the index
1042  */
1043 static int vpbe_display_g_output(struct file *file, void *priv,
1044                                 unsigned int *i)
1045 {
1046         struct vpbe_layer *layer = video_drvdata(file);
1047         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1048 
1049         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
1050         /* Get the standard from the current encoder */
1051         *i = vpbe_dev->current_out_index;
1052 
1053         return 0;
1054 }
1055 
1056 /**
1057  * vpbe_display_enum_dv_timings - Enumerate the dv timings
1058  *
1059  * enum the timings in the current encoder. Return the status. 0 - success
1060  * -EINVAL on error
1061  */
1062 static int
1063 vpbe_display_enum_dv_timings(struct file *file, void *priv,
1064                         struct v4l2_enum_dv_timings *timings)
1065 {
1066         struct vpbe_layer *layer = video_drvdata(file);
1067         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1068         int ret;
1069 
1070         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
1071 
1072         /* Enumerate outputs */
1073         if (NULL == vpbe_dev->ops.enum_dv_timings)
1074                 return -EINVAL;
1075 
1076         ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
1077         if (ret) {
1078                 v4l2_err(&vpbe_dev->v4l2_dev,
1079                         "Failed to enumerate dv timings info\n");
1080                 return -EINVAL;
1081         }
1082 
1083         return 0;
1084 }
1085 
1086 /**
1087  * vpbe_display_s_dv_timings - Set the dv timings
1088  *
1089  * Set the timings in the current encoder. Return the status. 0 - success
1090  * -EINVAL on error
1091  */
1092 static int
1093 vpbe_display_s_dv_timings(struct file *file, void *priv,
1094                                 struct v4l2_dv_timings *timings)
1095 {
1096         struct vpbe_layer *layer = video_drvdata(file);
1097         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1098         int ret;
1099 
1100         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
1101 
1102         if (vb2_is_busy(&layer->buffer_queue))
1103                 return -EBUSY;
1104 
1105         /* Set the given standard in the encoder */
1106         if (!vpbe_dev->ops.s_dv_timings)
1107                 return -EINVAL;
1108 
1109         ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
1110         if (ret) {
1111                 v4l2_err(&vpbe_dev->v4l2_dev,
1112                         "Failed to set the dv timings info\n");
1113                 return -EINVAL;
1114         }
1115 
1116         return 0;
1117 }
1118 
1119 /**
1120  * vpbe_display_g_dv_timings - Set the dv timings
1121  *
1122  * Get the timings in the current encoder. Return the status. 0 - success
1123  * -EINVAL on error
1124  */
1125 static int
1126 vpbe_display_g_dv_timings(struct file *file, void *priv,
1127                                 struct v4l2_dv_timings *dv_timings)
1128 {
1129         struct vpbe_layer *layer = video_drvdata(file);
1130         struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
1131 
1132         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
1133 
1134         /* Get the given standard in the encoder */
1135 
1136         if (vpbe_dev->current_timings.timings_type &
1137                                 VPBE_ENC_DV_TIMINGS) {
1138                 *dv_timings = vpbe_dev->current_timings.dv_timings;
1139         } else {
1140                 return -EINVAL;
1141         }
1142 
1143         return 0;
1144 }
1145 
1146 /*
1147  * vpbe_display_open()
1148  * It creates object of file handle structure and stores it in private_data
1149  * member of filepointer
1150  */
1151 static int vpbe_display_open(struct file *file)
1152 {
1153         struct vpbe_layer *layer = video_drvdata(file);
1154         struct vpbe_display *disp_dev = layer->disp_dev;
1155         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1156         struct osd_state *osd_device = disp_dev->osd_device;
1157         int err;
1158 
1159         /* creating context for file descriptor */
1160         err = v4l2_fh_open(file);
1161         if (err) {
1162                 v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
1163                 return err;
1164         }
1165 
1166         /* leaving if layer is already initialized */
1167         if (!v4l2_fh_is_singular_file(file))
1168                 return err;
1169 
1170         if (!layer->usrs) {
1171                 if (mutex_lock_interruptible(&layer->opslock))
1172                         return -ERESTARTSYS;
1173                 /* First claim the layer for this device */
1174                 err = osd_device->ops.request_layer(osd_device,
1175                                                 layer->layer_info.id);
1176                 mutex_unlock(&layer->opslock);
1177                 if (err < 0) {
1178                         /* Couldn't get layer */
1179                         v4l2_err(&vpbe_dev->v4l2_dev,
1180                                 "Display Manager failed to allocate layer\n");
1181                         v4l2_fh_release(file);
1182                         return -EINVAL;
1183                 }
1184         }
1185         /* Increment layer usrs counter */
1186         layer->usrs++;
1187         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
1188                         "vpbe display device opened successfully\n");
1189         return 0;
1190 }
1191 
1192 /*
1193  * vpbe_display_release()
1194  * This function deletes buffer queue, frees the buffers and the davinci
1195  * display file * handle
1196  */
1197 static int vpbe_display_release(struct file *file)
1198 {
1199         struct vpbe_layer *layer = video_drvdata(file);
1200         struct osd_layer_config *cfg  = &layer->layer_info.config;
1201         struct vpbe_display *disp_dev = layer->disp_dev;
1202         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1203         struct osd_state *osd_device = disp_dev->osd_device;
1204 
1205         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
1206 
1207         mutex_lock(&layer->opslock);
1208 
1209         osd_device->ops.disable_layer(osd_device,
1210                         layer->layer_info.id);
1211         /* Decrement layer usrs counter */
1212         layer->usrs--;
1213         /* If this file handle has initialize encoder device, reset it */
1214         if (!layer->usrs) {
1215                 if (cfg->pixfmt == PIXFMT_NV12) {
1216                         struct vpbe_layer *otherlayer;
1217                         otherlayer =
1218                         _vpbe_display_get_other_win_layer(disp_dev, layer);
1219                         osd_device->ops.disable_layer(osd_device,
1220                                         otherlayer->layer_info.id);
1221                         osd_device->ops.release_layer(osd_device,
1222                                         otherlayer->layer_info.id);
1223                 }
1224                 osd_device->ops.disable_layer(osd_device,
1225                                 layer->layer_info.id);
1226                 osd_device->ops.release_layer(osd_device,
1227                                 layer->layer_info.id);
1228         }
1229 
1230         _vb2_fop_release(file, NULL);
1231         mutex_unlock(&layer->opslock);
1232 
1233         disp_dev->cbcr_ofst = 0;
1234 
1235         return 0;
1236 }
1237 
1238 /* vpbe capture ioctl operations */
1239 static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
1240         .vidioc_querycap         = vpbe_display_querycap,
1241         .vidioc_g_fmt_vid_out    = vpbe_display_g_fmt,
1242         .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
1243         .vidioc_s_fmt_vid_out    = vpbe_display_s_fmt,
1244         .vidioc_try_fmt_vid_out  = vpbe_display_try_fmt,
1245 
1246         .vidioc_reqbufs          = vb2_ioctl_reqbufs,
1247         .vidioc_create_bufs      = vb2_ioctl_create_bufs,
1248         .vidioc_querybuf         = vb2_ioctl_querybuf,
1249         .vidioc_qbuf             = vb2_ioctl_qbuf,
1250         .vidioc_dqbuf            = vb2_ioctl_dqbuf,
1251         .vidioc_streamon         = vb2_ioctl_streamon,
1252         .vidioc_streamoff        = vb2_ioctl_streamoff,
1253         .vidioc_expbuf           = vb2_ioctl_expbuf,
1254 
1255         .vidioc_cropcap          = vpbe_display_cropcap,
1256         .vidioc_g_crop           = vpbe_display_g_crop,
1257         .vidioc_s_crop           = vpbe_display_s_crop,
1258 
1259         .vidioc_s_std            = vpbe_display_s_std,
1260         .vidioc_g_std            = vpbe_display_g_std,
1261 
1262         .vidioc_enum_output      = vpbe_display_enum_output,
1263         .vidioc_s_output         = vpbe_display_s_output,
1264         .vidioc_g_output         = vpbe_display_g_output,
1265 
1266         .vidioc_s_dv_timings     = vpbe_display_s_dv_timings,
1267         .vidioc_g_dv_timings     = vpbe_display_g_dv_timings,
1268         .vidioc_enum_dv_timings  = vpbe_display_enum_dv_timings,
1269 };
1270 
1271 static struct v4l2_file_operations vpbe_fops = {
1272         .owner = THIS_MODULE,
1273         .open = vpbe_display_open,
1274         .release = vpbe_display_release,
1275         .unlocked_ioctl = video_ioctl2,
1276         .mmap = vb2_fop_mmap,
1277         .poll =  vb2_fop_poll,
1278 };
1279 
1280 static int vpbe_device_get(struct device *dev, void *data)
1281 {
1282         struct platform_device *pdev = to_platform_device(dev);
1283         struct vpbe_display *vpbe_disp  = data;
1284 
1285         if (strcmp("vpbe_controller", pdev->name) == 0)
1286                 vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
1287 
1288         if (strstr(pdev->name, "vpbe-osd") != NULL)
1289                 vpbe_disp->osd_device = platform_get_drvdata(pdev);
1290 
1291         return 0;
1292 }
1293 
1294 static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
1295                            struct platform_device *pdev)
1296 {
1297         struct vpbe_layer *vpbe_display_layer = NULL;
1298         struct video_device *vbd = NULL;
1299 
1300         /* Allocate memory for four plane display objects */
1301 
1302         disp_dev->dev[i] =
1303                 kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
1304 
1305         /* If memory allocation fails, return error */
1306         if (!disp_dev->dev[i]) {
1307                 printk(KERN_ERR "ran out of memory\n");
1308                 return  -ENOMEM;
1309         }
1310         spin_lock_init(&disp_dev->dev[i]->irqlock);
1311         mutex_init(&disp_dev->dev[i]->opslock);
1312 
1313         /* Get the pointer to the layer object */
1314         vpbe_display_layer = disp_dev->dev[i];
1315         vbd = &vpbe_display_layer->video_dev;
1316         /* Initialize field of video device */
1317         vbd->release    = video_device_release_empty;
1318         vbd->fops       = &vpbe_fops;
1319         vbd->ioctl_ops  = &vpbe_ioctl_ops;
1320         vbd->minor      = -1;
1321         vbd->v4l2_dev   = &disp_dev->vpbe_dev->v4l2_dev;
1322         vbd->lock       = &vpbe_display_layer->opslock;
1323         vbd->vfl_dir    = VFL_DIR_TX;
1324 
1325         if (disp_dev->vpbe_dev->current_timings.timings_type &
1326                         VPBE_ENC_STD)
1327                 vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
1328 
1329         snprintf(vbd->name, sizeof(vbd->name),
1330                         "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
1331                         (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
1332                         (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
1333                         (VPBE_DISPLAY_VERSION_CODE) & 0xff);
1334 
1335         vpbe_display_layer->device_id = i;
1336 
1337         vpbe_display_layer->layer_info.id =
1338                 ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
1339 
1340 
1341         return 0;
1342 }
1343 
1344 static int register_device(struct vpbe_layer *vpbe_display_layer,
1345                            struct vpbe_display *disp_dev,
1346                            struct platform_device *pdev)
1347 {
1348         int err;
1349 
1350         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1351                   "Trying to register VPBE display device.\n");
1352         v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
1353                   "layer=%x,layer->video_dev=%x\n",
1354                   (int)vpbe_display_layer,
1355                   (int)&vpbe_display_layer->video_dev);
1356 
1357         vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
1358         err = video_register_device(&vpbe_display_layer->video_dev,
1359                                     VFL_TYPE_GRABBER,
1360                                     -1);
1361         if (err)
1362                 return -ENODEV;
1363 
1364         vpbe_display_layer->disp_dev = disp_dev;
1365         /* set the driver data in platform device */
1366         platform_set_drvdata(pdev, disp_dev);
1367         video_set_drvdata(&vpbe_display_layer->video_dev,
1368                           vpbe_display_layer);
1369 
1370         return 0;
1371 }
1372 
1373 
1374 
1375 /*
1376  * vpbe_display_probe()
1377  * This function creates device entries by register itself to the V4L2 driver
1378  * and initializes fields of each layer objects
1379  */
1380 static int vpbe_display_probe(struct platform_device *pdev)
1381 {
1382         struct vpbe_display *disp_dev;
1383         struct v4l2_device *v4l2_dev;
1384         struct resource *res = NULL;
1385         struct vb2_queue *q;
1386         int k;
1387         int i;
1388         int err;
1389         int irq;
1390 
1391         printk(KERN_DEBUG "vpbe_display_probe\n");
1392         /* Allocate memory for vpbe_display */
1393         disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display),
1394                                 GFP_KERNEL);
1395         if (!disp_dev)
1396                 return -ENOMEM;
1397 
1398         spin_lock_init(&disp_dev->dma_queue_lock);
1399         /*
1400          * Scan all the platform devices to find the vpbe
1401          * controller device and get the vpbe_dev object
1402          */
1403         err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
1404                         vpbe_device_get);
1405         if (err < 0)
1406                 return err;
1407 
1408         v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
1409         /* Initialize the vpbe display controller */
1410         if (NULL != disp_dev->vpbe_dev->ops.initialize) {
1411                 err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
1412                                                          disp_dev->vpbe_dev);
1413                 if (err) {
1414                         v4l2_err(v4l2_dev, "Error initing vpbe\n");
1415                         err = -ENOMEM;
1416                         goto probe_out;
1417                 }
1418         }
1419 
1420         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1421                 if (init_vpbe_layer(i, disp_dev, pdev)) {
1422                         err = -ENODEV;
1423                         goto probe_out;
1424                 }
1425         }
1426 
1427         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1428         if (!res) {
1429                 v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
1430                 err = -ENODEV;
1431                 goto probe_out;
1432         }
1433 
1434         irq = res->start;
1435         err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
1436                                VPBE_DISPLAY_DRIVER, disp_dev);
1437         if (err) {
1438                 v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
1439                 goto probe_out;
1440         }
1441 
1442         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1443                 /* initialize vb2 queue */
1444                 q = &disp_dev->dev[i]->buffer_queue;
1445                 memset(q, 0, sizeof(*q));
1446                 q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1447                 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1448                 q->drv_priv = disp_dev->dev[i];
1449                 q->ops = &video_qops;
1450                 q->mem_ops = &vb2_dma_contig_memops;
1451                 q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
1452                 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1453                 q->min_buffers_needed = 1;
1454                 q->lock = &disp_dev->dev[i]->opslock;
1455                 err = vb2_queue_init(q);
1456                 if (err) {
1457                         v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
1458                         goto probe_out;
1459                 }
1460 
1461                 disp_dev->dev[i]->alloc_ctx =
1462                         vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev);
1463                 if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) {
1464                         v4l2_err(v4l2_dev, "Failed to get the context\n");
1465                         err = PTR_ERR(disp_dev->dev[i]->alloc_ctx);
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                         vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx);
1487                         video_unregister_device(&disp_dev->dev[k]->video_dev);
1488                         kfree(disp_dev->dev[k]);
1489                 }
1490         }
1491         return err;
1492 }
1493 
1494 /*
1495  * vpbe_display_remove()
1496  * It un-register hardware layer from V4L2 driver
1497  */
1498 static int vpbe_display_remove(struct platform_device *pdev)
1499 {
1500         struct vpbe_layer *vpbe_display_layer;
1501         struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
1502         struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
1503         int i;
1504 
1505         v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
1506 
1507         /* deinitialize the vpbe display controller */
1508         if (NULL != vpbe_dev->ops.deinitialize)
1509                 vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
1510         /* un-register device */
1511         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1512                 /* Get the pointer to the layer object */
1513                 vpbe_display_layer = disp_dev->dev[i];
1514                 vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx);
1515                 /* Unregister video device */
1516                 video_unregister_device(&vpbe_display_layer->video_dev);
1517 
1518         }
1519         for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
1520                 kfree(disp_dev->dev[i]);
1521                 disp_dev->dev[i] = NULL;
1522         }
1523 
1524         return 0;
1525 }
1526 
1527 static struct platform_driver vpbe_display_driver = {
1528         .driver = {
1529                 .name = VPBE_DISPLAY_DRIVER,
1530                 .bus = &platform_bus_type,
1531         },
1532         .probe = vpbe_display_probe,
1533         .remove = vpbe_display_remove,
1534 };
1535 
1536 module_platform_driver(vpbe_display_driver);
1537 
1538 MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
1539 MODULE_LICENSE("GPL");
1540 MODULE_AUTHOR("Texas Instruments");
1541 

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