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Linux/drivers/media/platform/omap/omap_vout.c

  1 /*
  2  * omap_vout.c
  3  *
  4  * Copyright (C) 2005-2010 Texas Instruments.
  5  *
  6  * This file is licensed under the terms of the GNU General Public License
  7  * version 2. This program is licensed "as is" without any warranty of any
  8  * kind, whether express or implied.
  9  *
 10  * Leveraged code from the OMAP2 camera driver
 11  * Video-for-Linux (Version 2) camera capture driver for
 12  * the OMAP24xx camera controller.
 13  *
 14  * Author: Andy Lowe (source@mvista.com)
 15  *
 16  * Copyright (C) 2004 MontaVista Software, Inc.
 17  * Copyright (C) 2010 Texas Instruments.
 18  *
 19  * History:
 20  * 20-APR-2006 Khasim           Modified VRFB based Rotation,
 21  *                              The image data is always read from 0 degree
 22  *                              view and written
 23  *                              to the virtual space of desired rotation angle
 24  * 4-DEC-2006  Jian             Changed to support better memory management
 25  *
 26  * 17-Nov-2008 Hardik           Changed driver to use video_ioctl2
 27  *
 28  * 23-Feb-2010 Vaibhav H        Modified to use new DSS2 interface
 29  *
 30  */
 31 
 32 #include <linux/init.h>
 33 #include <linux/module.h>
 34 #include <linux/vmalloc.h>
 35 #include <linux/sched.h>
 36 #include <linux/types.h>
 37 #include <linux/platform_device.h>
 38 #include <linux/irq.h>
 39 #include <linux/videodev2.h>
 40 #include <linux/dma-mapping.h>
 41 #include <linux/slab.h>
 42 
 43 #include <media/videobuf-dma-contig.h>
 44 #include <media/v4l2-device.h>
 45 #include <media/v4l2-ioctl.h>
 46 
 47 #include <video/omapvrfb.h>
 48 #include <video/omapfb_dss.h>
 49 
 50 #include "omap_voutlib.h"
 51 #include "omap_voutdef.h"
 52 #include "omap_vout_vrfb.h"
 53 
 54 MODULE_AUTHOR("Texas Instruments");
 55 MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
 56 MODULE_LICENSE("GPL");
 57 
 58 /* Driver Configuration macros */
 59 #define VOUT_NAME               "omap_vout"
 60 
 61 enum omap_vout_channels {
 62         OMAP_VIDEO1,
 63         OMAP_VIDEO2,
 64 };
 65 
 66 static struct videobuf_queue_ops video_vbq_ops;
 67 /* Variables configurable through module params*/
 68 static u32 video1_numbuffers = 3;
 69 static u32 video2_numbuffers = 3;
 70 static u32 video1_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
 71 static u32 video2_bufsize = OMAP_VOUT_MAX_BUF_SIZE;
 72 static bool vid1_static_vrfb_alloc;
 73 static bool vid2_static_vrfb_alloc;
 74 static bool debug;
 75 
 76 /* Module parameters */
 77 module_param(video1_numbuffers, uint, S_IRUGO);
 78 MODULE_PARM_DESC(video1_numbuffers,
 79         "Number of buffers to be allocated at init time for Video1 device.");
 80 
 81 module_param(video2_numbuffers, uint, S_IRUGO);
 82 MODULE_PARM_DESC(video2_numbuffers,
 83         "Number of buffers to be allocated at init time for Video2 device.");
 84 
 85 module_param(video1_bufsize, uint, S_IRUGO);
 86 MODULE_PARM_DESC(video1_bufsize,
 87         "Size of the buffer to be allocated for video1 device");
 88 
 89 module_param(video2_bufsize, uint, S_IRUGO);
 90 MODULE_PARM_DESC(video2_bufsize,
 91         "Size of the buffer to be allocated for video2 device");
 92 
 93 module_param(vid1_static_vrfb_alloc, bool, S_IRUGO);
 94 MODULE_PARM_DESC(vid1_static_vrfb_alloc,
 95         "Static allocation of the VRFB buffer for video1 device");
 96 
 97 module_param(vid2_static_vrfb_alloc, bool, S_IRUGO);
 98 MODULE_PARM_DESC(vid2_static_vrfb_alloc,
 99         "Static allocation of the VRFB buffer for video2 device");
100 
101 module_param(debug, bool, S_IRUGO);
102 MODULE_PARM_DESC(debug, "Debug level (0-1)");
103 
104 /* list of image formats supported by OMAP2 video pipelines */
105 static const struct v4l2_fmtdesc omap_formats[] = {
106         {
107                 /* Note:  V4L2 defines RGB565 as:
108                  *
109                  *      Byte 0                    Byte 1
110                  *      g2 g1 g0 r4 r3 r2 r1 r0   b4 b3 b2 b1 b0 g5 g4 g3
111                  *
112                  * We interpret RGB565 as:
113                  *
114                  *      Byte 0                    Byte 1
115                  *      g2 g1 g0 b4 b3 b2 b1 b0   r4 r3 r2 r1 r0 g5 g4 g3
116                  */
117                 .description = "RGB565, le",
118                 .pixelformat = V4L2_PIX_FMT_RGB565,
119         },
120         {
121                 /* Note:  V4L2 defines RGB32 as: RGB-8-8-8-8  we use
122                  *  this for RGB24 unpack mode, the last 8 bits are ignored
123                  * */
124                 .description = "RGB32, le",
125                 .pixelformat = V4L2_PIX_FMT_RGB32,
126         },
127         {
128                 /* Note:  V4L2 defines RGB24 as: RGB-8-8-8  we use
129                  *        this for RGB24 packed mode
130                  *
131                  */
132                 .description = "RGB24, le",
133                 .pixelformat = V4L2_PIX_FMT_RGB24,
134         },
135         {
136                 .description = "YUYV (YUV 4:2:2), packed",
137                 .pixelformat = V4L2_PIX_FMT_YUYV,
138         },
139         {
140                 .description = "UYVY, packed",
141                 .pixelformat = V4L2_PIX_FMT_UYVY,
142         },
143 };
144 
145 #define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
146 
147 /*
148  * Try format
149  */
150 static int omap_vout_try_format(struct v4l2_pix_format *pix)
151 {
152         int ifmt, bpp = 0;
153 
154         pix->height = clamp(pix->height, (u32)VID_MIN_HEIGHT,
155                                                 (u32)VID_MAX_HEIGHT);
156         pix->width = clamp(pix->width, (u32)VID_MIN_WIDTH, (u32)VID_MAX_WIDTH);
157 
158         for (ifmt = 0; ifmt < NUM_OUTPUT_FORMATS; ifmt++) {
159                 if (pix->pixelformat == omap_formats[ifmt].pixelformat)
160                         break;
161         }
162 
163         if (ifmt == NUM_OUTPUT_FORMATS)
164                 ifmt = 0;
165 
166         pix->pixelformat = omap_formats[ifmt].pixelformat;
167         pix->field = V4L2_FIELD_ANY;
168 
169         switch (pix->pixelformat) {
170         case V4L2_PIX_FMT_YUYV:
171         case V4L2_PIX_FMT_UYVY:
172         default:
173                 pix->colorspace = V4L2_COLORSPACE_JPEG;
174                 bpp = YUYV_BPP;
175                 break;
176         case V4L2_PIX_FMT_RGB565:
177         case V4L2_PIX_FMT_RGB565X:
178                 pix->colorspace = V4L2_COLORSPACE_SRGB;
179                 bpp = RGB565_BPP;
180                 break;
181         case V4L2_PIX_FMT_RGB24:
182                 pix->colorspace = V4L2_COLORSPACE_SRGB;
183                 bpp = RGB24_BPP;
184                 break;
185         case V4L2_PIX_FMT_RGB32:
186         case V4L2_PIX_FMT_BGR32:
187                 pix->colorspace = V4L2_COLORSPACE_SRGB;
188                 bpp = RGB32_BPP;
189                 break;
190         }
191         pix->bytesperline = pix->width * bpp;
192         pix->sizeimage = pix->bytesperline * pix->height;
193 
194         return bpp;
195 }
196 
197 /*
198  * omap_vout_get_userptr: Convert user space virtual address to physical
199  * address.
200  */
201 static int omap_vout_get_userptr(struct videobuf_buffer *vb, u32 virtp,
202                                  u32 *physp)
203 {
204         struct frame_vector *vec;
205         int ret;
206 
207         /* For kernel direct-mapped memory, take the easy way */
208         if (virtp >= PAGE_OFFSET) {
209                 *physp = virt_to_phys((void *)virtp);
210                 return 0;
211         }
212 
213         vec = frame_vector_create(1);
214         if (!vec)
215                 return -ENOMEM;
216 
217         ret = get_vaddr_frames(virtp, 1, FOLL_WRITE, vec);
218         if (ret != 1) {
219                 frame_vector_destroy(vec);
220                 return -EINVAL;
221         }
222         *physp = __pfn_to_phys(frame_vector_pfns(vec)[0]);
223         vb->priv = vec;
224 
225         return 0;
226 }
227 
228 /*
229  * Free the V4L2 buffers
230  */
231 void omap_vout_free_buffers(struct omap_vout_device *vout)
232 {
233         int i, numbuffers;
234 
235         /* Allocate memory for the buffers */
236         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
237         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
238 
239         for (i = 0; i < numbuffers; i++) {
240                 omap_vout_free_buffer(vout->buf_virt_addr[i],
241                                 vout->buffer_size);
242                 vout->buf_phy_addr[i] = 0;
243                 vout->buf_virt_addr[i] = 0;
244         }
245 }
246 
247 /*
248  * Convert V4L2 rotation to DSS rotation
249  *      V4L2 understand 0, 90, 180, 270.
250  *      Convert to 0, 1, 2 and 3 respectively for DSS
251  */
252 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
253                         enum dss_rotation *rotation, bool mirror)
254 {
255         int ret = 0;
256 
257         switch (v4l2_rotation) {
258         case 90:
259                 *rotation = dss_rotation_90_degree;
260                 break;
261         case 180:
262                 *rotation = dss_rotation_180_degree;
263                 break;
264         case 270:
265                 *rotation = dss_rotation_270_degree;
266                 break;
267         case 0:
268                 *rotation = dss_rotation_0_degree;
269                 break;
270         default:
271                 ret = -EINVAL;
272         }
273         return ret;
274 }
275 
276 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
277 {
278         struct omapvideo_info *ovid;
279         struct v4l2_rect *crop = &vout->crop;
280         struct v4l2_pix_format *pix = &vout->pix;
281         int *cropped_offset = &vout->cropped_offset;
282         int ps = 2, line_length = 0;
283 
284         ovid = &vout->vid_info;
285 
286         if (ovid->rotation_type == VOUT_ROT_VRFB) {
287                 omap_vout_calculate_vrfb_offset(vout);
288         } else {
289                 vout->line_length = line_length = pix->width;
290 
291                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
292                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
293                         ps = 2;
294                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
295                         ps = 4;
296                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
297                         ps = 3;
298 
299                 vout->ps = ps;
300 
301                 *cropped_offset = (line_length * ps) *
302                         crop->top + crop->left * ps;
303         }
304 
305         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
306                         __func__, vout->cropped_offset);
307 
308         return 0;
309 }
310 
311 /*
312  * Convert V4L2 pixel format to DSS pixel format
313  */
314 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
315 {
316         struct omap_overlay *ovl;
317         struct omapvideo_info *ovid;
318         struct v4l2_pix_format *pix = &vout->pix;
319         enum omap_color_mode mode;
320 
321         ovid = &vout->vid_info;
322         ovl = ovid->overlays[0];
323 
324         switch (pix->pixelformat) {
325         case V4L2_PIX_FMT_YUYV:
326                 mode = OMAP_DSS_COLOR_YUV2;
327                 break;
328         case V4L2_PIX_FMT_UYVY:
329                 mode = OMAP_DSS_COLOR_UYVY;
330                 break;
331         case V4L2_PIX_FMT_RGB565:
332                 mode = OMAP_DSS_COLOR_RGB16;
333                 break;
334         case V4L2_PIX_FMT_RGB24:
335                 mode = OMAP_DSS_COLOR_RGB24P;
336                 break;
337         case V4L2_PIX_FMT_RGB32:
338                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
339                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
340                 break;
341         case V4L2_PIX_FMT_BGR32:
342                 mode = OMAP_DSS_COLOR_RGBX32;
343                 break;
344         default:
345                 mode = -EINVAL;
346                 break;
347         }
348         return mode;
349 }
350 
351 /*
352  * Setup the overlay
353  */
354 static int omapvid_setup_overlay(struct omap_vout_device *vout,
355                 struct omap_overlay *ovl, int posx, int posy, int outw,
356                 int outh, u32 addr)
357 {
358         int ret = 0;
359         struct omap_overlay_info info;
360         int cropheight, cropwidth, pixwidth;
361 
362         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
363                         (outw != vout->pix.width || outh != vout->pix.height)) {
364                 ret = -EINVAL;
365                 goto setup_ovl_err;
366         }
367 
368         vout->dss_mode = video_mode_to_dss_mode(vout);
369         if (vout->dss_mode == -EINVAL) {
370                 ret = -EINVAL;
371                 goto setup_ovl_err;
372         }
373 
374         /* Setup the input plane parameters according to
375          * rotation value selected.
376          */
377         if (is_rotation_90_or_270(vout)) {
378                 cropheight = vout->crop.width;
379                 cropwidth = vout->crop.height;
380                 pixwidth = vout->pix.height;
381         } else {
382                 cropheight = vout->crop.height;
383                 cropwidth = vout->crop.width;
384                 pixwidth = vout->pix.width;
385         }
386 
387         ovl->get_overlay_info(ovl, &info);
388         info.paddr = addr;
389         info.width = cropwidth;
390         info.height = cropheight;
391         info.color_mode = vout->dss_mode;
392         info.mirror = vout->mirror;
393         info.pos_x = posx;
394         info.pos_y = posy;
395         info.out_width = outw;
396         info.out_height = outh;
397         info.global_alpha = vout->win.global_alpha;
398         if (!is_rotation_enabled(vout)) {
399                 info.rotation = 0;
400                 info.rotation_type = OMAP_DSS_ROT_DMA;
401                 info.screen_width = pixwidth;
402         } else {
403                 info.rotation = vout->rotation;
404                 info.rotation_type = OMAP_DSS_ROT_VRFB;
405                 info.screen_width = 2048;
406         }
407 
408         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
409                 "%s enable=%d addr=%pad width=%d\n height=%d color_mode=%d\n"
410                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
411                 "out_height=%d rotation_type=%d screen_width=%d\n", __func__,
412                 ovl->is_enabled(ovl), &info.paddr, info.width, info.height,
413                 info.color_mode, info.rotation, info.mirror, info.pos_x,
414                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
415                 info.screen_width);
416 
417         ret = ovl->set_overlay_info(ovl, &info);
418         if (ret)
419                 goto setup_ovl_err;
420 
421         return 0;
422 
423 setup_ovl_err:
424         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
425         return ret;
426 }
427 
428 /*
429  * Initialize the overlay structure
430  */
431 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
432 {
433         int ret = 0, i;
434         struct v4l2_window *win;
435         struct omap_overlay *ovl;
436         int posx, posy, outw, outh;
437         struct omap_video_timings *timing;
438         struct omapvideo_info *ovid = &vout->vid_info;
439 
440         win = &vout->win;
441         for (i = 0; i < ovid->num_overlays; i++) {
442                 struct omap_dss_device *dssdev;
443 
444                 ovl = ovid->overlays[i];
445                 dssdev = ovl->get_device(ovl);
446 
447                 if (!dssdev)
448                         return -EINVAL;
449 
450                 timing = &dssdev->panel.timings;
451 
452                 outw = win->w.width;
453                 outh = win->w.height;
454                 switch (vout->rotation) {
455                 case dss_rotation_90_degree:
456                         /* Invert the height and width for 90
457                          * and 270 degree rotation
458                          */
459                         swap(outw, outh);
460                         posy = (timing->y_res - win->w.width) - win->w.left;
461                         posx = win->w.top;
462                         break;
463 
464                 case dss_rotation_180_degree:
465                         posx = (timing->x_res - win->w.width) - win->w.left;
466                         posy = (timing->y_res - win->w.height) - win->w.top;
467                         break;
468 
469                 case dss_rotation_270_degree:
470                         swap(outw, outh);
471                         posy = win->w.left;
472                         posx = (timing->x_res - win->w.height) - win->w.top;
473                         break;
474 
475                 default:
476                         posx = win->w.left;
477                         posy = win->w.top;
478                         break;
479                 }
480 
481                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
482                                 outw, outh, addr);
483                 if (ret)
484                         goto omapvid_init_err;
485         }
486         return 0;
487 
488 omapvid_init_err:
489         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
490         return ret;
491 }
492 
493 /*
494  * Apply the changes set the go bit of DSS
495  */
496 static int omapvid_apply_changes(struct omap_vout_device *vout)
497 {
498         int i;
499         struct omap_overlay *ovl;
500         struct omapvideo_info *ovid = &vout->vid_info;
501 
502         for (i = 0; i < ovid->num_overlays; i++) {
503                 struct omap_dss_device *dssdev;
504 
505                 ovl = ovid->overlays[i];
506                 dssdev = ovl->get_device(ovl);
507                 if (!dssdev)
508                         return -EINVAL;
509                 ovl->manager->apply(ovl->manager);
510         }
511 
512         return 0;
513 }
514 
515 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
516                 unsigned int irqstatus, struct timeval timevalue)
517 {
518         u32 fid;
519 
520         if (vout->first_int) {
521                 vout->first_int = 0;
522                 goto err;
523         }
524 
525         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
526                 fid = 1;
527         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
528                 fid = 0;
529         else
530                 goto err;
531 
532         vout->field_id ^= 1;
533         if (fid != vout->field_id) {
534                 if (fid == 0)
535                         vout->field_id = fid;
536         } else if (0 == fid) {
537                 if (vout->cur_frm == vout->next_frm)
538                         goto err;
539 
540                 vout->cur_frm->ts = timevalue;
541                 vout->cur_frm->state = VIDEOBUF_DONE;
542                 wake_up_interruptible(&vout->cur_frm->done);
543                 vout->cur_frm = vout->next_frm;
544         } else {
545                 if (list_empty(&vout->dma_queue) ||
546                                 (vout->cur_frm != vout->next_frm))
547                         goto err;
548         }
549 
550         return vout->field_id;
551 err:
552         return 0;
553 }
554 
555 static void omap_vout_isr(void *arg, unsigned int irqstatus)
556 {
557         int ret, fid, mgr_id;
558         u32 addr, irq;
559         struct omap_overlay *ovl;
560         struct timeval timevalue;
561         struct omapvideo_info *ovid;
562         struct omap_dss_device *cur_display;
563         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
564 
565         if (!vout->streaming)
566                 return;
567 
568         ovid = &vout->vid_info;
569         ovl = ovid->overlays[0];
570 
571         mgr_id = ovl->manager->id;
572 
573         /* get the display device attached to the overlay */
574         cur_display = ovl->get_device(ovl);
575 
576         if (!cur_display)
577                 return;
578 
579         spin_lock(&vout->vbq_lock);
580         v4l2_get_timestamp(&timevalue);
581 
582         switch (cur_display->type) {
583         case OMAP_DISPLAY_TYPE_DSI:
584         case OMAP_DISPLAY_TYPE_DPI:
585         case OMAP_DISPLAY_TYPE_DVI:
586                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
587                         irq = DISPC_IRQ_VSYNC;
588                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
589                         irq = DISPC_IRQ_VSYNC2;
590                 else
591                         goto vout_isr_err;
592 
593                 if (!(irqstatus & irq))
594                         goto vout_isr_err;
595                 break;
596         case OMAP_DISPLAY_TYPE_VENC:
597                 fid = omapvid_handle_interlace_display(vout, irqstatus,
598                                 timevalue);
599                 if (!fid)
600                         goto vout_isr_err;
601                 break;
602         case OMAP_DISPLAY_TYPE_HDMI:
603                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
604                         goto vout_isr_err;
605                 break;
606         default:
607                 goto vout_isr_err;
608         }
609 
610         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
611                 vout->cur_frm->ts = timevalue;
612                 vout->cur_frm->state = VIDEOBUF_DONE;
613                 wake_up_interruptible(&vout->cur_frm->done);
614                 vout->cur_frm = vout->next_frm;
615         }
616 
617         vout->first_int = 0;
618         if (list_empty(&vout->dma_queue))
619                 goto vout_isr_err;
620 
621         vout->next_frm = list_entry(vout->dma_queue.next,
622                         struct videobuf_buffer, queue);
623         list_del(&vout->next_frm->queue);
624 
625         vout->next_frm->state = VIDEOBUF_ACTIVE;
626 
627         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
628                 + vout->cropped_offset;
629 
630         /* First save the configuration in ovelray structure */
631         ret = omapvid_init(vout, addr);
632         if (ret) {
633                 printk(KERN_ERR VOUT_NAME
634                         "failed to set overlay info\n");
635                 goto vout_isr_err;
636         }
637 
638         /* Enable the pipeline and set the Go bit */
639         ret = omapvid_apply_changes(vout);
640         if (ret)
641                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
642 
643 vout_isr_err:
644         spin_unlock(&vout->vbq_lock);
645 }
646 
647 /* Video buffer call backs */
648 
649 /*
650  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
651  * called. This is used to setup buffers and return size and count of
652  * buffers allocated. After the call to this buffer, videobuf layer will
653  * setup buffer queue depending on the size and count of buffers
654  */
655 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
656                           unsigned int *size)
657 {
658         int startindex = 0, i, j;
659         u32 phy_addr = 0, virt_addr = 0;
660         struct omap_vout_device *vout = q->priv_data;
661         struct omapvideo_info *ovid = &vout->vid_info;
662         int vid_max_buf_size;
663 
664         if (!vout)
665                 return -EINVAL;
666 
667         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
668                 video2_bufsize;
669 
670         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
671                 return -EINVAL;
672 
673         startindex = (vout->vid == OMAP_VIDEO1) ?
674                 video1_numbuffers : video2_numbuffers;
675         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
676                 *count = startindex;
677 
678         if (ovid->rotation_type == VOUT_ROT_VRFB) {
679                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
680                         return -ENOMEM;
681         }
682 
683         if (V4L2_MEMORY_MMAP != vout->memory)
684                 return 0;
685 
686         /* Now allocated the V4L2 buffers */
687         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
688         startindex = (vout->vid == OMAP_VIDEO1) ?
689                 video1_numbuffers : video2_numbuffers;
690 
691         /* Check the size of the buffer */
692         if (*size > vid_max_buf_size) {
693                 v4l2_err(&vout->vid_dev->v4l2_dev,
694                                 "buffer allocation mismatch [%u] [%u]\n",
695                                 *size, vout->buffer_size);
696                 return -ENOMEM;
697         }
698 
699         for (i = startindex; i < *count; i++) {
700                 vout->buffer_size = *size;
701 
702                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
703                                 &phy_addr);
704                 if (!virt_addr) {
705                         if (ovid->rotation_type == VOUT_ROT_NONE) {
706                                 break;
707                         } else {
708                                 if (!is_rotation_enabled(vout))
709                                         break;
710                         /* Free the VRFB buffers if no space for V4L2 buffers */
711                         for (j = i; j < *count; j++) {
712                                 omap_vout_free_buffer(
713                                                 vout->smsshado_virt_addr[j],
714                                                 vout->smsshado_size);
715                                 vout->smsshado_virt_addr[j] = 0;
716                                 vout->smsshado_phy_addr[j] = 0;
717                                 }
718                         }
719                 }
720                 vout->buf_virt_addr[i] = virt_addr;
721                 vout->buf_phy_addr[i] = phy_addr;
722         }
723         *count = vout->buffer_allocated = i;
724 
725         return 0;
726 }
727 
728 /*
729  * Free the V4L2 buffers additionally allocated than default
730  * number of buffers
731  */
732 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
733 {
734         int num_buffers = 0, i;
735 
736         num_buffers = (vout->vid == OMAP_VIDEO1) ?
737                 video1_numbuffers : video2_numbuffers;
738 
739         for (i = num_buffers; i < vout->buffer_allocated; i++) {
740                 if (vout->buf_virt_addr[i])
741                         omap_vout_free_buffer(vout->buf_virt_addr[i],
742                                         vout->buffer_size);
743 
744                 vout->buf_virt_addr[i] = 0;
745                 vout->buf_phy_addr[i] = 0;
746         }
747         vout->buffer_allocated = num_buffers;
748 }
749 
750 /*
751  * This function will be called when VIDIOC_QBUF ioctl is called.
752  * It prepare buffers before give out for the display. This function
753  * converts user space virtual address into physical address if userptr memory
754  * exchange mechanism is used. If rotation is enabled, it copies entire
755  * buffer into VRFB memory space before giving it to the DSS.
756  */
757 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
758                         struct videobuf_buffer *vb,
759                         enum v4l2_field field)
760 {
761         struct omap_vout_device *vout = q->priv_data;
762         struct omapvideo_info *ovid = &vout->vid_info;
763 
764         if (VIDEOBUF_NEEDS_INIT == vb->state) {
765                 vb->width = vout->pix.width;
766                 vb->height = vout->pix.height;
767                 vb->size = vb->width * vb->height * vout->bpp;
768                 vb->field = field;
769         }
770         vb->state = VIDEOBUF_PREPARED;
771         /* if user pointer memory mechanism is used, get the physical
772          * address of the buffer
773          */
774         if (V4L2_MEMORY_USERPTR == vb->memory) {
775                 int ret;
776 
777                 if (0 == vb->baddr)
778                         return -EINVAL;
779                 /* Physical address */
780                 ret = omap_vout_get_userptr(vb, vb->baddr,
781                                 (u32 *)&vout->queued_buf_addr[vb->i]);
782                 if (ret < 0)
783                         return ret;
784         } else {
785                 unsigned long addr, dma_addr;
786                 unsigned long size;
787 
788                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
789                 size = (unsigned long) vb->size;
790 
791                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
792                                 size, DMA_TO_DEVICE);
793                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
794                         v4l2_err(&vout->vid_dev->v4l2_dev,
795                                  "dma_map_single failed\n");
796 
797                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
798         }
799 
800         if (ovid->rotation_type == VOUT_ROT_VRFB)
801                 return omap_vout_prepare_vrfb(vout, vb);
802         else
803                 return 0;
804 }
805 
806 /*
807  * Buffer queue function will be called from the videobuf layer when _QBUF
808  * ioctl is called. It is used to enqueue buffer, which is ready to be
809  * displayed.
810  */
811 static void omap_vout_buffer_queue(struct videobuf_queue *q,
812                           struct videobuf_buffer *vb)
813 {
814         struct omap_vout_device *vout = q->priv_data;
815 
816         /* Driver is also maintainig a queue. So enqueue buffer in the driver
817          * queue */
818         list_add_tail(&vb->queue, &vout->dma_queue);
819 
820         vb->state = VIDEOBUF_QUEUED;
821 }
822 
823 /*
824  * Buffer release function is called from videobuf layer to release buffer
825  * which are already allocated
826  */
827 static void omap_vout_buffer_release(struct videobuf_queue *q,
828                             struct videobuf_buffer *vb)
829 {
830         vb->state = VIDEOBUF_NEEDS_INIT;
831         if (vb->memory == V4L2_MEMORY_USERPTR && vb->priv) {
832                 struct frame_vector *vec = vb->priv;
833 
834                 put_vaddr_frames(vec);
835                 frame_vector_destroy(vec);
836         }
837 }
838 
839 /*
840  *  File operations
841  */
842 static unsigned int omap_vout_poll(struct file *file,
843                                    struct poll_table_struct *wait)
844 {
845         struct omap_vout_device *vout = file->private_data;
846         struct videobuf_queue *q = &vout->vbq;
847 
848         return videobuf_poll_stream(file, q, wait);
849 }
850 
851 static void omap_vout_vm_open(struct vm_area_struct *vma)
852 {
853         struct omap_vout_device *vout = vma->vm_private_data;
854 
855         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
856                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
857         vout->mmap_count++;
858 }
859 
860 static void omap_vout_vm_close(struct vm_area_struct *vma)
861 {
862         struct omap_vout_device *vout = vma->vm_private_data;
863 
864         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
865                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
866         vout->mmap_count--;
867 }
868 
869 static const struct vm_operations_struct omap_vout_vm_ops = {
870         .open   = omap_vout_vm_open,
871         .close  = omap_vout_vm_close,
872 };
873 
874 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
875 {
876         int i;
877         void *pos;
878         unsigned long start = vma->vm_start;
879         unsigned long size = (vma->vm_end - vma->vm_start);
880         struct omap_vout_device *vout = file->private_data;
881         struct videobuf_queue *q = &vout->vbq;
882 
883         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
884                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
885                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
886 
887         /* look for the buffer to map */
888         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
889                 if (NULL == q->bufs[i])
890                         continue;
891                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
892                         continue;
893                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
894                         break;
895         }
896 
897         if (VIDEO_MAX_FRAME == i) {
898                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
899                                 "offset invalid [offset=0x%lx]\n",
900                                 (vma->vm_pgoff << PAGE_SHIFT));
901                 return -EINVAL;
902         }
903         /* Check the size of the buffer */
904         if (size > vout->buffer_size) {
905                 v4l2_err(&vout->vid_dev->v4l2_dev,
906                                 "insufficient memory [%lu] [%u]\n",
907                                 size, vout->buffer_size);
908                 return -ENOMEM;
909         }
910 
911         q->bufs[i]->baddr = vma->vm_start;
912 
913         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
914         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
915         vma->vm_ops = &omap_vout_vm_ops;
916         vma->vm_private_data = (void *) vout;
917         pos = (void *)vout->buf_virt_addr[i];
918         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
919         while (size > 0) {
920                 unsigned long pfn;
921                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
922                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
923                         return -EAGAIN;
924                 start += PAGE_SIZE;
925                 pos += PAGE_SIZE;
926                 size -= PAGE_SIZE;
927         }
928         vout->mmap_count++;
929         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
930 
931         return 0;
932 }
933 
934 static int omap_vout_release(struct file *file)
935 {
936         unsigned int ret, i;
937         struct videobuf_queue *q;
938         struct omapvideo_info *ovid;
939         struct omap_vout_device *vout = file->private_data;
940 
941         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
942         ovid = &vout->vid_info;
943 
944         if (!vout)
945                 return 0;
946 
947         q = &vout->vbq;
948         /* Disable all the overlay managers connected with this interface */
949         for (i = 0; i < ovid->num_overlays; i++) {
950                 struct omap_overlay *ovl = ovid->overlays[i];
951                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
952 
953                 if (dssdev)
954                         ovl->disable(ovl);
955         }
956         /* Turn off the pipeline */
957         ret = omapvid_apply_changes(vout);
958         if (ret)
959                 v4l2_warn(&vout->vid_dev->v4l2_dev,
960                                 "Unable to apply changes\n");
961 
962         /* Free all buffers */
963         omap_vout_free_extra_buffers(vout);
964 
965         /* Free the VRFB buffers only if they are allocated
966          * during reqbufs.  Don't free if init time allocated
967          */
968         if (ovid->rotation_type == VOUT_ROT_VRFB) {
969                 if (!vout->vrfb_static_allocation)
970                         omap_vout_free_vrfb_buffers(vout);
971         }
972         videobuf_mmap_free(q);
973 
974         /* Even if apply changes fails we should continue
975            freeing allocated memory */
976         if (vout->streaming) {
977                 u32 mask = 0;
978 
979                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
980                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
981                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
982                 vout->streaming = false;
983 
984                 videobuf_streamoff(q);
985                 videobuf_queue_cancel(q);
986         }
987 
988         if (vout->mmap_count != 0)
989                 vout->mmap_count = 0;
990 
991         vout->opened -= 1;
992         file->private_data = NULL;
993 
994         if (vout->buffer_allocated)
995                 videobuf_mmap_free(q);
996 
997         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
998         return ret;
999 }
1000 
1001 static int omap_vout_open(struct file *file)
1002 {
1003         struct videobuf_queue *q;
1004         struct omap_vout_device *vout = NULL;
1005 
1006         vout = video_drvdata(file);
1007         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1008 
1009         if (vout == NULL)
1010                 return -ENODEV;
1011 
1012         /* for now, we only support single open */
1013         if (vout->opened)
1014                 return -EBUSY;
1015 
1016         vout->opened += 1;
1017 
1018         file->private_data = vout;
1019         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1020 
1021         q = &vout->vbq;
1022         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1023         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1024         video_vbq_ops.buf_release = omap_vout_buffer_release;
1025         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1026         spin_lock_init(&vout->vbq_lock);
1027 
1028         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1029                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1030                         sizeof(struct videobuf_buffer), vout, NULL);
1031 
1032         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1033         return 0;
1034 }
1035 
1036 /*
1037  * V4L2 ioctls
1038  */
1039 static int vidioc_querycap(struct file *file, void *fh,
1040                 struct v4l2_capability *cap)
1041 {
1042         struct omap_vout_device *vout = fh;
1043 
1044         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1045         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1046         cap->bus_info[0] = '\0';
1047         cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1048                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1049         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1050 
1051         return 0;
1052 }
1053 
1054 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1055                         struct v4l2_fmtdesc *fmt)
1056 {
1057         int index = fmt->index;
1058 
1059         if (index >= NUM_OUTPUT_FORMATS)
1060                 return -EINVAL;
1061 
1062         fmt->flags = omap_formats[index].flags;
1063         strlcpy(fmt->description, omap_formats[index].description,
1064                         sizeof(fmt->description));
1065         fmt->pixelformat = omap_formats[index].pixelformat;
1066 
1067         return 0;
1068 }
1069 
1070 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1071                         struct v4l2_format *f)
1072 {
1073         struct omap_vout_device *vout = fh;
1074 
1075         f->fmt.pix = vout->pix;
1076         return 0;
1077 
1078 }
1079 
1080 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1081                         struct v4l2_format *f)
1082 {
1083         struct omap_overlay *ovl;
1084         struct omapvideo_info *ovid;
1085         struct omap_video_timings *timing;
1086         struct omap_vout_device *vout = fh;
1087         struct omap_dss_device *dssdev;
1088 
1089         ovid = &vout->vid_info;
1090         ovl = ovid->overlays[0];
1091         /* get the display device attached to the overlay */
1092         dssdev = ovl->get_device(ovl);
1093 
1094         if (!dssdev)
1095                 return -EINVAL;
1096 
1097         timing = &dssdev->panel.timings;
1098 
1099         vout->fbuf.fmt.height = timing->y_res;
1100         vout->fbuf.fmt.width = timing->x_res;
1101 
1102         omap_vout_try_format(&f->fmt.pix);
1103         return 0;
1104 }
1105 
1106 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1107                         struct v4l2_format *f)
1108 {
1109         int ret, bpp;
1110         struct omap_overlay *ovl;
1111         struct omapvideo_info *ovid;
1112         struct omap_video_timings *timing;
1113         struct omap_vout_device *vout = fh;
1114         struct omap_dss_device *dssdev;
1115 
1116         if (vout->streaming)
1117                 return -EBUSY;
1118 
1119         mutex_lock(&vout->lock);
1120 
1121         ovid = &vout->vid_info;
1122         ovl = ovid->overlays[0];
1123         dssdev = ovl->get_device(ovl);
1124 
1125         /* get the display device attached to the overlay */
1126         if (!dssdev) {
1127                 ret = -EINVAL;
1128                 goto s_fmt_vid_out_exit;
1129         }
1130         timing = &dssdev->panel.timings;
1131 
1132         /* We dont support RGB24-packed mode if vrfb rotation
1133          * is enabled*/
1134         if ((is_rotation_enabled(vout)) &&
1135                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1136                 ret = -EINVAL;
1137                 goto s_fmt_vid_out_exit;
1138         }
1139 
1140         /* get the framebuffer parameters */
1141 
1142         if (is_rotation_90_or_270(vout)) {
1143                 vout->fbuf.fmt.height = timing->x_res;
1144                 vout->fbuf.fmt.width = timing->y_res;
1145         } else {
1146                 vout->fbuf.fmt.height = timing->y_res;
1147                 vout->fbuf.fmt.width = timing->x_res;
1148         }
1149 
1150         /* change to samller size is OK */
1151 
1152         bpp = omap_vout_try_format(&f->fmt.pix);
1153         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1154 
1155         /* try & set the new output format */
1156         vout->bpp = bpp;
1157         vout->pix = f->fmt.pix;
1158         vout->vrfb_bpp = 1;
1159 
1160         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1161         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1162                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1163                 vout->vrfb_bpp = 2;
1164 
1165         /* set default crop and win */
1166         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1167 
1168         ret = 0;
1169 
1170 s_fmt_vid_out_exit:
1171         mutex_unlock(&vout->lock);
1172         return ret;
1173 }
1174 
1175 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1176                         struct v4l2_format *f)
1177 {
1178         int ret = 0;
1179         struct omap_vout_device *vout = fh;
1180         struct omap_overlay *ovl;
1181         struct omapvideo_info *ovid;
1182         struct v4l2_window *win = &f->fmt.win;
1183 
1184         ovid = &vout->vid_info;
1185         ovl = ovid->overlays[0];
1186 
1187         ret = omap_vout_try_window(&vout->fbuf, win);
1188 
1189         if (!ret) {
1190                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1191                         win->global_alpha = 255;
1192                 else
1193                         win->global_alpha = f->fmt.win.global_alpha;
1194         }
1195 
1196         return ret;
1197 }
1198 
1199 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1200                         struct v4l2_format *f)
1201 {
1202         int ret = 0;
1203         struct omap_overlay *ovl;
1204         struct omapvideo_info *ovid;
1205         struct omap_vout_device *vout = fh;
1206         struct v4l2_window *win = &f->fmt.win;
1207 
1208         mutex_lock(&vout->lock);
1209         ovid = &vout->vid_info;
1210         ovl = ovid->overlays[0];
1211 
1212         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1213         if (!ret) {
1214                 /* Video1 plane does not support global alpha on OMAP3 */
1215                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1216                         vout->win.global_alpha = 255;
1217                 else
1218                         vout->win.global_alpha = f->fmt.win.global_alpha;
1219 
1220                 vout->win.chromakey = f->fmt.win.chromakey;
1221         }
1222         mutex_unlock(&vout->lock);
1223         return ret;
1224 }
1225 
1226 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1227                         struct v4l2_format *f)
1228 {
1229         u32 key_value =  0;
1230         struct omap_overlay *ovl;
1231         struct omapvideo_info *ovid;
1232         struct omap_vout_device *vout = fh;
1233         struct omap_overlay_manager_info info;
1234         struct v4l2_window *win = &f->fmt.win;
1235 
1236         ovid = &vout->vid_info;
1237         ovl = ovid->overlays[0];
1238 
1239         win->w = vout->win.w;
1240         win->field = vout->win.field;
1241         win->global_alpha = vout->win.global_alpha;
1242 
1243         if (ovl->manager && ovl->manager->get_manager_info) {
1244                 ovl->manager->get_manager_info(ovl->manager, &info);
1245                 key_value = info.trans_key;
1246         }
1247         win->chromakey = key_value;
1248         return 0;
1249 }
1250 
1251 static int vidioc_g_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1252 {
1253         struct omap_vout_device *vout = fh;
1254         struct v4l2_pix_format *pix = &vout->pix;
1255 
1256         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1257                 return -EINVAL;
1258 
1259         switch (sel->target) {
1260         case V4L2_SEL_TGT_CROP:
1261                 sel->r = vout->crop;
1262                 break;
1263         case V4L2_SEL_TGT_CROP_DEFAULT:
1264                 omap_vout_default_crop(&vout->pix, &vout->fbuf, &sel->r);
1265                 break;
1266         case V4L2_SEL_TGT_CROP_BOUNDS:
1267                 /* Width and height are always even */
1268                 sel->r.width = pix->width & ~1;
1269                 sel->r.height = pix->height & ~1;
1270                 break;
1271         default:
1272                 return -EINVAL;
1273         }
1274         return 0;
1275 }
1276 
1277 static int vidioc_s_selection(struct file *file, void *fh, struct v4l2_selection *sel)
1278 {
1279         int ret = -EINVAL;
1280         struct omap_vout_device *vout = fh;
1281         struct omapvideo_info *ovid;
1282         struct omap_overlay *ovl;
1283         struct omap_video_timings *timing;
1284         struct omap_dss_device *dssdev;
1285 
1286         if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1287                 return -EINVAL;
1288 
1289         if (sel->target != V4L2_SEL_TGT_CROP)
1290                 return -EINVAL;
1291 
1292         if (vout->streaming)
1293                 return -EBUSY;
1294 
1295         mutex_lock(&vout->lock);
1296         ovid = &vout->vid_info;
1297         ovl = ovid->overlays[0];
1298         /* get the display device attached to the overlay */
1299         dssdev = ovl->get_device(ovl);
1300 
1301         if (!dssdev) {
1302                 ret = -EINVAL;
1303                 goto s_crop_err;
1304         }
1305 
1306         timing = &dssdev->panel.timings;
1307 
1308         if (is_rotation_90_or_270(vout)) {
1309                 vout->fbuf.fmt.height = timing->x_res;
1310                 vout->fbuf.fmt.width = timing->y_res;
1311         } else {
1312                 vout->fbuf.fmt.height = timing->y_res;
1313                 vout->fbuf.fmt.width = timing->x_res;
1314         }
1315 
1316         ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1317                                  &vout->fbuf, &sel->r);
1318 
1319 s_crop_err:
1320         mutex_unlock(&vout->lock);
1321         return ret;
1322 }
1323 
1324 static int omap_vout_s_ctrl(struct v4l2_ctrl *ctrl)
1325 {
1326         struct omap_vout_device *vout =
1327                 container_of(ctrl->handler, struct omap_vout_device, ctrl_handler);
1328         int ret = 0;
1329 
1330         switch (ctrl->id) {
1331         case V4L2_CID_ROTATE: {
1332                 struct omapvideo_info *ovid;
1333                 int rotation = ctrl->val;
1334 
1335                 ovid = &vout->vid_info;
1336 
1337                 mutex_lock(&vout->lock);
1338                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1339                         mutex_unlock(&vout->lock);
1340                         ret = -ERANGE;
1341                         break;
1342                 }
1343 
1344                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1345                         mutex_unlock(&vout->lock);
1346                         ret = -EINVAL;
1347                         break;
1348                 }
1349 
1350                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1351                                                         vout->mirror)) {
1352                         mutex_unlock(&vout->lock);
1353                         ret = -EINVAL;
1354                         break;
1355                 }
1356                 mutex_unlock(&vout->lock);
1357                 break;
1358         }
1359         case V4L2_CID_BG_COLOR:
1360         {
1361                 struct omap_overlay *ovl;
1362                 unsigned int color = ctrl->val;
1363                 struct omap_overlay_manager_info info;
1364 
1365                 ovl = vout->vid_info.overlays[0];
1366 
1367                 mutex_lock(&vout->lock);
1368                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1369                         mutex_unlock(&vout->lock);
1370                         ret = -EINVAL;
1371                         break;
1372                 }
1373 
1374                 ovl->manager->get_manager_info(ovl->manager, &info);
1375                 info.default_color = color;
1376                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1377                         mutex_unlock(&vout->lock);
1378                         ret = -EINVAL;
1379                         break;
1380                 }
1381                 mutex_unlock(&vout->lock);
1382                 break;
1383         }
1384         case V4L2_CID_VFLIP:
1385         {
1386                 struct omapvideo_info *ovid;
1387                 unsigned int mirror = ctrl->val;
1388 
1389                 ovid = &vout->vid_info;
1390 
1391                 mutex_lock(&vout->lock);
1392                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1393                         mutex_unlock(&vout->lock);
1394                         ret = -ERANGE;
1395                         break;
1396                 }
1397 
1398                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1399                         mutex_unlock(&vout->lock);
1400                         ret = -EINVAL;
1401                         break;
1402                 }
1403                 vout->mirror = mirror;
1404                 mutex_unlock(&vout->lock);
1405                 break;
1406         }
1407         default:
1408                 return -EINVAL;
1409         }
1410         return ret;
1411 }
1412 
1413 static const struct v4l2_ctrl_ops omap_vout_ctrl_ops = {
1414         .s_ctrl = omap_vout_s_ctrl,
1415 };
1416 
1417 static int vidioc_reqbufs(struct file *file, void *fh,
1418                         struct v4l2_requestbuffers *req)
1419 {
1420         int ret = 0;
1421         unsigned int i, num_buffers = 0;
1422         struct omap_vout_device *vout = fh;
1423         struct videobuf_queue *q = &vout->vbq;
1424 
1425         if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1426                 return -EINVAL;
1427         /* if memory is not mmp or userptr
1428            return error */
1429         if ((V4L2_MEMORY_MMAP != req->memory) &&
1430                         (V4L2_MEMORY_USERPTR != req->memory))
1431                 return -EINVAL;
1432 
1433         mutex_lock(&vout->lock);
1434         /* Cannot be requested when streaming is on */
1435         if (vout->streaming) {
1436                 ret = -EBUSY;
1437                 goto reqbuf_err;
1438         }
1439 
1440         /* If buffers are already allocated free them */
1441         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1442                 if (vout->mmap_count) {
1443                         ret = -EBUSY;
1444                         goto reqbuf_err;
1445                 }
1446                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1447                         video1_numbuffers : video2_numbuffers;
1448                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1449                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1450                                         vout->buffer_size);
1451                         vout->buf_virt_addr[i] = 0;
1452                         vout->buf_phy_addr[i] = 0;
1453                 }
1454                 vout->buffer_allocated = num_buffers;
1455                 videobuf_mmap_free(q);
1456         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1457                 if (vout->buffer_allocated) {
1458                         videobuf_mmap_free(q);
1459                         for (i = 0; i < vout->buffer_allocated; i++) {
1460                                 kfree(q->bufs[i]);
1461                                 q->bufs[i] = NULL;
1462                         }
1463                         vout->buffer_allocated = 0;
1464                 }
1465         }
1466 
1467         /*store the memory type in data structure */
1468         vout->memory = req->memory;
1469 
1470         INIT_LIST_HEAD(&vout->dma_queue);
1471 
1472         /* call videobuf_reqbufs api */
1473         ret = videobuf_reqbufs(q, req);
1474         if (ret < 0)
1475                 goto reqbuf_err;
1476 
1477         vout->buffer_allocated = req->count;
1478 
1479 reqbuf_err:
1480         mutex_unlock(&vout->lock);
1481         return ret;
1482 }
1483 
1484 static int vidioc_querybuf(struct file *file, void *fh,
1485                         struct v4l2_buffer *b)
1486 {
1487         struct omap_vout_device *vout = fh;
1488 
1489         return videobuf_querybuf(&vout->vbq, b);
1490 }
1491 
1492 static int vidioc_qbuf(struct file *file, void *fh,
1493                         struct v4l2_buffer *buffer)
1494 {
1495         struct omap_vout_device *vout = fh;
1496         struct videobuf_queue *q = &vout->vbq;
1497 
1498         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1499                         (buffer->index >= vout->buffer_allocated) ||
1500                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1501                 return -EINVAL;
1502         }
1503         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1504                 if ((buffer->length < vout->pix.sizeimage) ||
1505                                 (0 == buffer->m.userptr)) {
1506                         return -EINVAL;
1507                 }
1508         }
1509 
1510         if ((is_rotation_enabled(vout)) &&
1511                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1512                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1513                                 "DMA Channel not allocated for Rotation\n");
1514                 return -EINVAL;
1515         }
1516 
1517         return videobuf_qbuf(q, buffer);
1518 }
1519 
1520 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1521 {
1522         struct omap_vout_device *vout = fh;
1523         struct videobuf_queue *q = &vout->vbq;
1524 
1525         int ret;
1526         u32 addr;
1527         unsigned long size;
1528         struct videobuf_buffer *vb;
1529 
1530         vb = q->bufs[b->index];
1531 
1532         if (!vout->streaming)
1533                 return -EINVAL;
1534 
1535         if (file->f_flags & O_NONBLOCK)
1536                 /* Call videobuf_dqbuf for non blocking mode */
1537                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1538         else
1539                 /* Call videobuf_dqbuf for  blocking mode */
1540                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1541 
1542         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1543         size = (unsigned long) vb->size;
1544         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1545                                 size, DMA_TO_DEVICE);
1546         return ret;
1547 }
1548 
1549 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1550 {
1551         int ret = 0, j;
1552         u32 addr = 0, mask = 0;
1553         struct omap_vout_device *vout = fh;
1554         struct videobuf_queue *q = &vout->vbq;
1555         struct omapvideo_info *ovid = &vout->vid_info;
1556 
1557         mutex_lock(&vout->lock);
1558 
1559         if (vout->streaming) {
1560                 ret = -EBUSY;
1561                 goto streamon_err;
1562         }
1563 
1564         ret = videobuf_streamon(q);
1565         if (ret)
1566                 goto streamon_err;
1567 
1568         if (list_empty(&vout->dma_queue)) {
1569                 ret = -EIO;
1570                 goto streamon_err1;
1571         }
1572 
1573         /* Get the next frame from the buffer queue */
1574         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1575                         struct videobuf_buffer, queue);
1576         /* Remove buffer from the buffer queue */
1577         list_del(&vout->cur_frm->queue);
1578         /* Mark state of the current frame to active */
1579         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1580         /* Initialize field_id and started member */
1581         vout->field_id = 0;
1582 
1583         /* set flag here. Next QBUF will start DMA */
1584         vout->streaming = true;
1585 
1586         vout->first_int = 1;
1587 
1588         if (omap_vout_calculate_offset(vout)) {
1589                 ret = -EINVAL;
1590                 goto streamon_err1;
1591         }
1592         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1593                 + vout->cropped_offset;
1594 
1595         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1596                 | DISPC_IRQ_VSYNC2;
1597 
1598         /* First save the configuration in ovelray structure */
1599         ret = omapvid_init(vout, addr);
1600         if (ret) {
1601                 v4l2_err(&vout->vid_dev->v4l2_dev,
1602                                 "failed to set overlay info\n");
1603                 goto streamon_err1;
1604         }
1605 
1606         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1607 
1608         /* Enable the pipeline and set the Go bit */
1609         ret = omapvid_apply_changes(vout);
1610         if (ret)
1611                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1612 
1613         for (j = 0; j < ovid->num_overlays; j++) {
1614                 struct omap_overlay *ovl = ovid->overlays[j];
1615                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1616 
1617                 if (dssdev) {
1618                         ret = ovl->enable(ovl);
1619                         if (ret)
1620                                 goto streamon_err1;
1621                 }
1622         }
1623 
1624         ret = 0;
1625 
1626 streamon_err1:
1627         if (ret)
1628                 ret = videobuf_streamoff(q);
1629 streamon_err:
1630         mutex_unlock(&vout->lock);
1631         return ret;
1632 }
1633 
1634 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1635 {
1636         u32 mask = 0;
1637         int ret = 0, j;
1638         struct omap_vout_device *vout = fh;
1639         struct omapvideo_info *ovid = &vout->vid_info;
1640 
1641         if (!vout->streaming)
1642                 return -EINVAL;
1643 
1644         vout->streaming = false;
1645         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1646                 | DISPC_IRQ_VSYNC2;
1647 
1648         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1649 
1650         for (j = 0; j < ovid->num_overlays; j++) {
1651                 struct omap_overlay *ovl = ovid->overlays[j];
1652                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1653 
1654                 if (dssdev)
1655                         ovl->disable(ovl);
1656         }
1657 
1658         /* Turn of the pipeline */
1659         ret = omapvid_apply_changes(vout);
1660         if (ret)
1661                 v4l2_err(&vout->vid_dev->v4l2_dev,
1662                          "failed to change mode in streamoff\n");
1663 
1664         INIT_LIST_HEAD(&vout->dma_queue);
1665         ret = videobuf_streamoff(&vout->vbq);
1666 
1667         return ret;
1668 }
1669 
1670 static int vidioc_s_fbuf(struct file *file, void *fh,
1671                                 const struct v4l2_framebuffer *a)
1672 {
1673         int enable = 0;
1674         struct omap_overlay *ovl;
1675         struct omapvideo_info *ovid;
1676         struct omap_vout_device *vout = fh;
1677         struct omap_overlay_manager_info info;
1678         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1679 
1680         ovid = &vout->vid_info;
1681         ovl = ovid->overlays[0];
1682 
1683         /* OMAP DSS doesn't support Source and Destination color
1684            key together */
1685         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1686                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1687                 return -EINVAL;
1688         /* OMAP DSS Doesn't support the Destination color key
1689            and alpha blending together */
1690         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1691                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1692                 return -EINVAL;
1693 
1694         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1695                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1696                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1697         } else
1698                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1699 
1700         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1701                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1702                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1703         } else
1704                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1705 
1706         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1707                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1708                 enable = 1;
1709         else
1710                 enable = 0;
1711         if (ovl->manager && ovl->manager->get_manager_info &&
1712                         ovl->manager->set_manager_info) {
1713 
1714                 ovl->manager->get_manager_info(ovl->manager, &info);
1715                 info.trans_enabled = enable;
1716                 info.trans_key_type = key_type;
1717                 info.trans_key = vout->win.chromakey;
1718 
1719                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1720                         return -EINVAL;
1721         }
1722         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1723                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1724                 enable = 1;
1725         } else {
1726                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1727                 enable = 0;
1728         }
1729         if (ovl->manager && ovl->manager->get_manager_info &&
1730                         ovl->manager->set_manager_info) {
1731                 ovl->manager->get_manager_info(ovl->manager, &info);
1732                 /* enable this only if there is no zorder cap */
1733                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1734                         info.partial_alpha_enabled = enable;
1735                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1736                         return -EINVAL;
1737         }
1738 
1739         return 0;
1740 }
1741 
1742 static int vidioc_g_fbuf(struct file *file, void *fh,
1743                 struct v4l2_framebuffer *a)
1744 {
1745         struct omap_overlay *ovl;
1746         struct omapvideo_info *ovid;
1747         struct omap_vout_device *vout = fh;
1748         struct omap_overlay_manager_info info;
1749 
1750         ovid = &vout->vid_info;
1751         ovl = ovid->overlays[0];
1752 
1753         /* The video overlay must stay within the framebuffer and can't be
1754            positioned independently. */
1755         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1756         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1757                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1758 
1759         if (ovl->manager && ovl->manager->get_manager_info) {
1760                 ovl->manager->get_manager_info(ovl->manager, &info);
1761                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1762                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1763                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1764                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1765         }
1766         if (ovl->manager && ovl->manager->get_manager_info) {
1767                 ovl->manager->get_manager_info(ovl->manager, &info);
1768                 if (info.partial_alpha_enabled)
1769                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1770         }
1771 
1772         return 0;
1773 }
1774 
1775 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1776         .vidioc_querycap                        = vidioc_querycap,
1777         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1778         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1779         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1780         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1781         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1782         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1783         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1784         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1785         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1786         .vidioc_g_selection                     = vidioc_g_selection,
1787         .vidioc_s_selection                     = vidioc_s_selection,
1788         .vidioc_reqbufs                         = vidioc_reqbufs,
1789         .vidioc_querybuf                        = vidioc_querybuf,
1790         .vidioc_qbuf                            = vidioc_qbuf,
1791         .vidioc_dqbuf                           = vidioc_dqbuf,
1792         .vidioc_streamon                        = vidioc_streamon,
1793         .vidioc_streamoff                       = vidioc_streamoff,
1794 };
1795 
1796 static const struct v4l2_file_operations omap_vout_fops = {
1797         .owner          = THIS_MODULE,
1798         .poll           = omap_vout_poll,
1799         .unlocked_ioctl = video_ioctl2,
1800         .mmap           = omap_vout_mmap,
1801         .open           = omap_vout_open,
1802         .release        = omap_vout_release,
1803 };
1804 
1805 /* Init functions used during driver initialization */
1806 /* Initial setup of video_data */
1807 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1808 {
1809         struct video_device *vfd;
1810         struct v4l2_pix_format *pix;
1811         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1812         struct omap_dss_device *display = ovl->get_device(ovl);
1813         struct v4l2_ctrl_handler *hdl;
1814 
1815         /* set the default pix */
1816         pix = &vout->pix;
1817 
1818         /* Set the default picture of QVGA  */
1819         pix->width = QQVGA_WIDTH;
1820         pix->height = QQVGA_HEIGHT;
1821 
1822         /* Default pixel format is RGB 5-6-5 */
1823         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1824         pix->field = V4L2_FIELD_ANY;
1825         pix->bytesperline = pix->width * 2;
1826         pix->sizeimage = pix->bytesperline * pix->height;
1827         pix->colorspace = V4L2_COLORSPACE_JPEG;
1828 
1829         vout->bpp = RGB565_BPP;
1830         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1831         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1832 
1833         /* Set the data structures for the overlay parameters*/
1834         vout->win.global_alpha = 255;
1835         vout->fbuf.flags = 0;
1836         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1837                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1838         vout->win.chromakey = 0;
1839 
1840         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1841 
1842         hdl = &vout->ctrl_handler;
1843         v4l2_ctrl_handler_init(hdl, 3);
1844         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1845                           V4L2_CID_ROTATE, 0, 270, 90, 0);
1846         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1847                           V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0);
1848         v4l2_ctrl_new_std(hdl, &omap_vout_ctrl_ops,
1849                           V4L2_CID_VFLIP, 0, 1, 1, 0);
1850         if (hdl->error)
1851                 return hdl->error;
1852 
1853         vout->rotation = 0;
1854         vout->mirror = false;
1855         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1856                 vout->vrfb_bpp = 2;
1857 
1858         /* initialize the video_device struct */
1859         vfd = vout->vfd = video_device_alloc();
1860 
1861         if (!vfd) {
1862                 printk(KERN_ERR VOUT_NAME
1863                        ": could not allocate video device struct\n");
1864                 v4l2_ctrl_handler_free(hdl);
1865                 return -ENOMEM;
1866         }
1867         vfd->ctrl_handler = hdl;
1868         vfd->release = video_device_release;
1869         vfd->ioctl_ops = &vout_ioctl_ops;
1870 
1871         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1872 
1873         vfd->fops = &omap_vout_fops;
1874         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1875         vfd->vfl_dir = VFL_DIR_TX;
1876         mutex_init(&vout->lock);
1877 
1878         vfd->minor = -1;
1879         return 0;
1880 
1881 }
1882 
1883 /* Setup video buffers */
1884 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1885                 int vid_num)
1886 {
1887         u32 numbuffers;
1888         int ret = 0, i;
1889         struct omapvideo_info *ovid;
1890         struct omap_vout_device *vout;
1891         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1892         struct omap2video_device *vid_dev =
1893                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1894 
1895         vout = vid_dev->vouts[vid_num];
1896         ovid = &vout->vid_info;
1897 
1898         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1899         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1900         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1901 
1902         for (i = 0; i < numbuffers; i++) {
1903                 vout->buf_virt_addr[i] =
1904                         omap_vout_alloc_buffer(vout->buffer_size,
1905                                         (u32 *) &vout->buf_phy_addr[i]);
1906                 if (!vout->buf_virt_addr[i]) {
1907                         numbuffers = i;
1908                         ret = -ENOMEM;
1909                         goto free_buffers;
1910                 }
1911         }
1912 
1913         vout->cropped_offset = 0;
1914 
1915         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1916                 bool static_vrfb_allocation = (vid_num == 0) ?
1917                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1918                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1919                                 static_vrfb_allocation);
1920         }
1921 
1922         return ret;
1923 
1924 free_buffers:
1925         for (i = 0; i < numbuffers; i++) {
1926                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1927                                                 vout->buffer_size);
1928                 vout->buf_virt_addr[i] = 0;
1929                 vout->buf_phy_addr[i] = 0;
1930         }
1931         return ret;
1932 
1933 }
1934 
1935 /* Create video out devices */
1936 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
1937 {
1938         int ret = 0, k;
1939         struct omap_vout_device *vout;
1940         struct video_device *vfd = NULL;
1941         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1942         struct omap2video_device *vid_dev = container_of(v4l2_dev,
1943                         struct omap2video_device, v4l2_dev);
1944 
1945         for (k = 0; k < pdev->num_resources; k++) {
1946 
1947                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
1948                 if (!vout) {
1949                         dev_err(&pdev->dev, ": could not allocate memory\n");
1950                         return -ENOMEM;
1951                 }
1952 
1953                 vout->vid = k;
1954                 vid_dev->vouts[k] = vout;
1955                 vout->vid_dev = vid_dev;
1956                 /* Select video2 if only 1 overlay is controlled by V4L2 */
1957                 if (pdev->num_resources == 1)
1958                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
1959                 else
1960                         /* Else select video1 and video2 one by one. */
1961                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
1962                 vout->vid_info.num_overlays = 1;
1963                 vout->vid_info.id = k + 1;
1964 
1965                 /* Set VRFB as rotation_type for omap2 and omap3 */
1966                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
1967                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
1968 
1969                 /* Setup the default configuration for the video devices
1970                  */
1971                 if (omap_vout_setup_video_data(vout) != 0) {
1972                         ret = -ENOMEM;
1973                         goto error;
1974                 }
1975 
1976                 /* Allocate default number of buffers for the video streaming
1977                  * and reserve the VRFB space for rotation
1978                  */
1979                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
1980                         ret = -ENOMEM;
1981                         goto error1;
1982                 }
1983 
1984                 /* Register the Video device with V4L2
1985                  */
1986                 vfd = vout->vfd;
1987                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
1988                         dev_err(&pdev->dev,
1989                                 ": Could not register Video for Linux device\n");
1990                         vfd->minor = -1;
1991                         ret = -ENODEV;
1992                         goto error2;
1993                 }
1994                 video_set_drvdata(vfd, vout);
1995 
1996                 dev_info(&pdev->dev,
1997                          ": registered and initialized video device %d\n",
1998                          vfd->minor);
1999                 if (k == (pdev->num_resources - 1))
2000                         return 0;
2001 
2002                 continue;
2003 error2:
2004                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2005                         omap_vout_release_vrfb(vout);
2006                 omap_vout_free_buffers(vout);
2007 error1:
2008                 video_device_release(vfd);
2009 error:
2010                 kfree(vout);
2011                 return ret;
2012         }
2013 
2014         return -ENODEV;
2015 }
2016 /* Driver functions */
2017 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2018 {
2019         struct video_device *vfd;
2020         struct omapvideo_info *ovid;
2021 
2022         if (!vout)
2023                 return;
2024 
2025         vfd = vout->vfd;
2026         ovid = &vout->vid_info;
2027         if (vfd) {
2028                 if (!video_is_registered(vfd)) {
2029                         /*
2030                          * The device was never registered, so release the
2031                          * video_device struct directly.
2032                          */
2033                         video_device_release(vfd);
2034                 } else {
2035                         /*
2036                          * The unregister function will release the video_device
2037                          * struct as well as unregistering it.
2038                          */
2039                         video_unregister_device(vfd);
2040                 }
2041         }
2042         v4l2_ctrl_handler_free(&vout->ctrl_handler);
2043         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2044                 omap_vout_release_vrfb(vout);
2045                 /* Free the VRFB buffer if allocated
2046                  * init time
2047                  */
2048                 if (vout->vrfb_static_allocation)
2049                         omap_vout_free_vrfb_buffers(vout);
2050         }
2051         omap_vout_free_buffers(vout);
2052 
2053         kfree(vout);
2054 }
2055 
2056 static int omap_vout_remove(struct platform_device *pdev)
2057 {
2058         int k;
2059         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2060         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2061                         omap2video_device, v4l2_dev);
2062 
2063         v4l2_device_unregister(v4l2_dev);
2064         for (k = 0; k < pdev->num_resources; k++)
2065                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2066 
2067         for (k = 0; k < vid_dev->num_displays; k++) {
2068                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2069                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2070 
2071                 omap_dss_put_device(vid_dev->displays[k]);
2072         }
2073         kfree(vid_dev);
2074         return 0;
2075 }
2076 
2077 static int __init omap_vout_probe(struct platform_device *pdev)
2078 {
2079         int ret = 0, i;
2080         struct omap_overlay *ovl;
2081         struct omap_dss_device *dssdev = NULL;
2082         struct omap_dss_device *def_display;
2083         struct omap2video_device *vid_dev = NULL;
2084 
2085         if (omapdss_is_initialized() == false)
2086                 return -EPROBE_DEFER;
2087 
2088         ret = omapdss_compat_init();
2089         if (ret) {
2090                 dev_err(&pdev->dev, "failed to init dss\n");
2091                 return ret;
2092         }
2093 
2094         if (pdev->num_resources == 0) {
2095                 dev_err(&pdev->dev, "probed for an unknown device\n");
2096                 ret = -ENODEV;
2097                 goto err_dss_init;
2098         }
2099 
2100         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2101         if (vid_dev == NULL) {
2102                 ret = -ENOMEM;
2103                 goto err_dss_init;
2104         }
2105 
2106         vid_dev->num_displays = 0;
2107         for_each_dss_dev(dssdev) {
2108                 omap_dss_get_device(dssdev);
2109 
2110                 if (!dssdev->driver) {
2111                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2112                                         dssdev->name);
2113                         omap_dss_put_device(dssdev);
2114                         continue;
2115                 }
2116 
2117                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2118         }
2119 
2120         if (vid_dev->num_displays == 0) {
2121                 dev_err(&pdev->dev, "no displays\n");
2122                 ret = -EINVAL;
2123                 goto probe_err0;
2124         }
2125 
2126         vid_dev->num_overlays = omap_dss_get_num_overlays();
2127         for (i = 0; i < vid_dev->num_overlays; i++)
2128                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2129 
2130         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2131         for (i = 0; i < vid_dev->num_managers; i++)
2132                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2133 
2134         /* Get the Video1 overlay and video2 overlay.
2135          * Setup the Display attached to that overlays
2136          */
2137         for (i = 1; i < vid_dev->num_overlays; i++) {
2138                 ovl = omap_dss_get_overlay(i);
2139                 dssdev = ovl->get_device(ovl);
2140 
2141                 if (dssdev) {
2142                         def_display = dssdev;
2143                 } else {
2144                         dev_warn(&pdev->dev, "cannot find display\n");
2145                         def_display = NULL;
2146                 }
2147                 if (def_display) {
2148                         struct omap_dss_driver *dssdrv = def_display->driver;
2149 
2150                         ret = dssdrv->enable(def_display);
2151                         if (ret) {
2152                                 /* Here we are not considering a error
2153                                  *  as display may be enabled by frame
2154                                  *  buffer driver
2155                                  */
2156                                 dev_warn(&pdev->dev,
2157                                         "'%s' Display already enabled\n",
2158                                         def_display->name);
2159                         }
2160                 }
2161         }
2162 
2163         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2164                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2165                 ret = -ENODEV;
2166                 goto probe_err1;
2167         }
2168 
2169         ret = omap_vout_create_video_devices(pdev);
2170         if (ret)
2171                 goto probe_err2;
2172 
2173         for (i = 0; i < vid_dev->num_displays; i++) {
2174                 struct omap_dss_device *display = vid_dev->displays[i];
2175 
2176                 if (display->driver->update)
2177                         display->driver->update(display, 0, 0,
2178                                         display->panel.timings.x_res,
2179                                         display->panel.timings.y_res);
2180         }
2181         return 0;
2182 
2183 probe_err2:
2184         v4l2_device_unregister(&vid_dev->v4l2_dev);
2185 probe_err1:
2186         for (i = 1; i < vid_dev->num_overlays; i++) {
2187                 def_display = NULL;
2188                 ovl = omap_dss_get_overlay(i);
2189                 dssdev = ovl->get_device(ovl);
2190 
2191                 if (dssdev)
2192                         def_display = dssdev;
2193 
2194                 if (def_display && def_display->driver)
2195                         def_display->driver->disable(def_display);
2196         }
2197 probe_err0:
2198         kfree(vid_dev);
2199 err_dss_init:
2200         omapdss_compat_uninit();
2201         return ret;
2202 }
2203 
2204 static struct platform_driver omap_vout_driver = {
2205         .driver = {
2206                 .name = VOUT_NAME,
2207         },
2208         .remove = omap_vout_remove,
2209 };
2210 
2211 static int __init omap_vout_init(void)
2212 {
2213         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2214                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2215                 return -EINVAL;
2216         }
2217         return 0;
2218 }
2219 
2220 static void omap_vout_cleanup(void)
2221 {
2222         platform_driver_unregister(&omap_vout_driver);
2223 }
2224 
2225 late_initcall(omap_vout_init);
2226 module_exit(omap_vout_cleanup);
2227 

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