Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

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/omapdss.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         pix->priv = 0;
169 
170         switch (pix->pixelformat) {
171         case V4L2_PIX_FMT_YUYV:
172         case V4L2_PIX_FMT_UYVY:
173         default:
174                 pix->colorspace = V4L2_COLORSPACE_JPEG;
175                 bpp = YUYV_BPP;
176                 break;
177         case V4L2_PIX_FMT_RGB565:
178         case V4L2_PIX_FMT_RGB565X:
179                 pix->colorspace = V4L2_COLORSPACE_SRGB;
180                 bpp = RGB565_BPP;
181                 break;
182         case V4L2_PIX_FMT_RGB24:
183                 pix->colorspace = V4L2_COLORSPACE_SRGB;
184                 bpp = RGB24_BPP;
185                 break;
186         case V4L2_PIX_FMT_RGB32:
187         case V4L2_PIX_FMT_BGR32:
188                 pix->colorspace = V4L2_COLORSPACE_SRGB;
189                 bpp = RGB32_BPP;
190                 break;
191         }
192         pix->bytesperline = pix->width * bpp;
193         pix->sizeimage = pix->bytesperline * pix->height;
194 
195         return bpp;
196 }
197 
198 /*
199  * omap_vout_uservirt_to_phys: This inline function is used to convert user
200  * space virtual address to physical address.
201  */
202 static u32 omap_vout_uservirt_to_phys(u32 virtp)
203 {
204         unsigned long physp = 0;
205         struct vm_area_struct *vma;
206         struct mm_struct *mm = current->mm;
207 
208         /* For kernel direct-mapped memory, take the easy way */
209         if (virtp >= PAGE_OFFSET)
210                 return virt_to_phys((void *) virtp);
211 
212         down_read(&current->mm->mmap_sem);
213         vma = find_vma(mm, virtp);
214         if (vma && (vma->vm_flags & VM_IO) && vma->vm_pgoff) {
215                 /* this will catch, kernel-allocated, mmaped-to-usermode
216                    addresses */
217                 physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
218                 up_read(&current->mm->mmap_sem);
219         } else {
220                 /* otherwise, use get_user_pages() for general userland pages */
221                 int res, nr_pages = 1;
222                 struct page *pages;
223 
224                 res = get_user_pages(current, current->mm, virtp, nr_pages, 1,
225                                 0, &pages, NULL);
226                 up_read(&current->mm->mmap_sem);
227 
228                 if (res == nr_pages) {
229                         physp =  __pa(page_address(&pages[0]) +
230                                         (virtp & ~PAGE_MASK));
231                 } else {
232                         printk(KERN_WARNING VOUT_NAME
233                                         "get_user_pages failed\n");
234                         return 0;
235                 }
236         }
237 
238         return physp;
239 }
240 
241 /*
242  * Free the V4L2 buffers
243  */
244 void omap_vout_free_buffers(struct omap_vout_device *vout)
245 {
246         int i, numbuffers;
247 
248         /* Allocate memory for the buffers */
249         numbuffers = (vout->vid) ?  video2_numbuffers : video1_numbuffers;
250         vout->buffer_size = (vout->vid) ? video2_bufsize : video1_bufsize;
251 
252         for (i = 0; i < numbuffers; i++) {
253                 omap_vout_free_buffer(vout->buf_virt_addr[i],
254                                 vout->buffer_size);
255                 vout->buf_phy_addr[i] = 0;
256                 vout->buf_virt_addr[i] = 0;
257         }
258 }
259 
260 /*
261  * Convert V4L2 rotation to DSS rotation
262  *      V4L2 understand 0, 90, 180, 270.
263  *      Convert to 0, 1, 2 and 3 respectively for DSS
264  */
265 static int v4l2_rot_to_dss_rot(int v4l2_rotation,
266                         enum dss_rotation *rotation, bool mirror)
267 {
268         int ret = 0;
269 
270         switch (v4l2_rotation) {
271         case 90:
272                 *rotation = dss_rotation_90_degree;
273                 break;
274         case 180:
275                 *rotation = dss_rotation_180_degree;
276                 break;
277         case 270:
278                 *rotation = dss_rotation_270_degree;
279                 break;
280         case 0:
281                 *rotation = dss_rotation_0_degree;
282                 break;
283         default:
284                 ret = -EINVAL;
285         }
286         return ret;
287 }
288 
289 static int omap_vout_calculate_offset(struct omap_vout_device *vout)
290 {
291         struct omapvideo_info *ovid;
292         struct v4l2_rect *crop = &vout->crop;
293         struct v4l2_pix_format *pix = &vout->pix;
294         int *cropped_offset = &vout->cropped_offset;
295         int ps = 2, line_length = 0;
296 
297         ovid = &vout->vid_info;
298 
299         if (ovid->rotation_type == VOUT_ROT_VRFB) {
300                 omap_vout_calculate_vrfb_offset(vout);
301         } else {
302                 vout->line_length = line_length = pix->width;
303 
304                 if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
305                         V4L2_PIX_FMT_UYVY == pix->pixelformat)
306                         ps = 2;
307                 else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
308                         ps = 4;
309                 else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
310                         ps = 3;
311 
312                 vout->ps = ps;
313 
314                 *cropped_offset = (line_length * ps) *
315                         crop->top + crop->left * ps;
316         }
317 
318         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
319                         __func__, vout->cropped_offset);
320 
321         return 0;
322 }
323 
324 /*
325  * Convert V4L2 pixel format to DSS pixel format
326  */
327 static int video_mode_to_dss_mode(struct omap_vout_device *vout)
328 {
329         struct omap_overlay *ovl;
330         struct omapvideo_info *ovid;
331         struct v4l2_pix_format *pix = &vout->pix;
332         enum omap_color_mode mode;
333 
334         ovid = &vout->vid_info;
335         ovl = ovid->overlays[0];
336 
337         switch (pix->pixelformat) {
338         case V4L2_PIX_FMT_YUYV:
339                 mode = OMAP_DSS_COLOR_YUV2;
340                 break;
341         case V4L2_PIX_FMT_UYVY:
342                 mode = OMAP_DSS_COLOR_UYVY;
343                 break;
344         case V4L2_PIX_FMT_RGB565:
345                 mode = OMAP_DSS_COLOR_RGB16;
346                 break;
347         case V4L2_PIX_FMT_RGB24:
348                 mode = OMAP_DSS_COLOR_RGB24P;
349                 break;
350         case V4L2_PIX_FMT_RGB32:
351                 mode = (ovl->id == OMAP_DSS_VIDEO1) ?
352                         OMAP_DSS_COLOR_RGB24U : OMAP_DSS_COLOR_ARGB32;
353                 break;
354         case V4L2_PIX_FMT_BGR32:
355                 mode = OMAP_DSS_COLOR_RGBX32;
356                 break;
357         default:
358                 mode = -EINVAL;
359                 break;
360         }
361         return mode;
362 }
363 
364 /*
365  * Setup the overlay
366  */
367 static int omapvid_setup_overlay(struct omap_vout_device *vout,
368                 struct omap_overlay *ovl, int posx, int posy, int outw,
369                 int outh, u32 addr)
370 {
371         int ret = 0;
372         struct omap_overlay_info info;
373         int cropheight, cropwidth, pixheight, pixwidth;
374 
375         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0 &&
376                         (outw != vout->pix.width || outh != vout->pix.height)) {
377                 ret = -EINVAL;
378                 goto setup_ovl_err;
379         }
380 
381         vout->dss_mode = video_mode_to_dss_mode(vout);
382         if (vout->dss_mode == -EINVAL) {
383                 ret = -EINVAL;
384                 goto setup_ovl_err;
385         }
386 
387         /* Setup the input plane parameters according to
388          * rotation value selected.
389          */
390         if (is_rotation_90_or_270(vout)) {
391                 cropheight = vout->crop.width;
392                 cropwidth = vout->crop.height;
393                 pixheight = vout->pix.width;
394                 pixwidth = vout->pix.height;
395         } else {
396                 cropheight = vout->crop.height;
397                 cropwidth = vout->crop.width;
398                 pixheight = vout->pix.height;
399                 pixwidth = vout->pix.width;
400         }
401 
402         ovl->get_overlay_info(ovl, &info);
403         info.paddr = addr;
404         info.width = cropwidth;
405         info.height = cropheight;
406         info.color_mode = vout->dss_mode;
407         info.mirror = vout->mirror;
408         info.pos_x = posx;
409         info.pos_y = posy;
410         info.out_width = outw;
411         info.out_height = outh;
412         info.global_alpha = vout->win.global_alpha;
413         if (!is_rotation_enabled(vout)) {
414                 info.rotation = 0;
415                 info.rotation_type = OMAP_DSS_ROT_DMA;
416                 info.screen_width = pixwidth;
417         } else {
418                 info.rotation = vout->rotation;
419                 info.rotation_type = OMAP_DSS_ROT_VRFB;
420                 info.screen_width = 2048;
421         }
422 
423         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
424                 "%s enable=%d addr=%x width=%d\n height=%d color_mode=%d\n"
425                 "rotation=%d mirror=%d posx=%d posy=%d out_width = %d \n"
426                 "out_height=%d rotation_type=%d screen_width=%d\n",
427                 __func__, ovl->is_enabled(ovl), info.paddr, info.width, info.height,
428                 info.color_mode, info.rotation, info.mirror, info.pos_x,
429                 info.pos_y, info.out_width, info.out_height, info.rotation_type,
430                 info.screen_width);
431 
432         ret = ovl->set_overlay_info(ovl, &info);
433         if (ret)
434                 goto setup_ovl_err;
435 
436         return 0;
437 
438 setup_ovl_err:
439         v4l2_warn(&vout->vid_dev->v4l2_dev, "setup_overlay failed\n");
440         return ret;
441 }
442 
443 /*
444  * Initialize the overlay structure
445  */
446 static int omapvid_init(struct omap_vout_device *vout, u32 addr)
447 {
448         int ret = 0, i;
449         struct v4l2_window *win;
450         struct omap_overlay *ovl;
451         int posx, posy, outw, outh, temp;
452         struct omap_video_timings *timing;
453         struct omapvideo_info *ovid = &vout->vid_info;
454 
455         win = &vout->win;
456         for (i = 0; i < ovid->num_overlays; i++) {
457                 struct omap_dss_device *dssdev;
458 
459                 ovl = ovid->overlays[i];
460                 dssdev = ovl->get_device(ovl);
461 
462                 if (!dssdev)
463                         return -EINVAL;
464 
465                 timing = &dssdev->panel.timings;
466 
467                 outw = win->w.width;
468                 outh = win->w.height;
469                 switch (vout->rotation) {
470                 case dss_rotation_90_degree:
471                         /* Invert the height and width for 90
472                          * and 270 degree rotation
473                          */
474                         temp = outw;
475                         outw = outh;
476                         outh = temp;
477                         posy = (timing->y_res - win->w.width) - win->w.left;
478                         posx = win->w.top;
479                         break;
480 
481                 case dss_rotation_180_degree:
482                         posx = (timing->x_res - win->w.width) - win->w.left;
483                         posy = (timing->y_res - win->w.height) - win->w.top;
484                         break;
485 
486                 case dss_rotation_270_degree:
487                         temp = outw;
488                         outw = outh;
489                         outh = temp;
490                         posy = win->w.left;
491                         posx = (timing->x_res - win->w.height) - win->w.top;
492                         break;
493 
494                 default:
495                         posx = win->w.left;
496                         posy = win->w.top;
497                         break;
498                 }
499 
500                 ret = omapvid_setup_overlay(vout, ovl, posx, posy,
501                                 outw, outh, addr);
502                 if (ret)
503                         goto omapvid_init_err;
504         }
505         return 0;
506 
507 omapvid_init_err:
508         v4l2_warn(&vout->vid_dev->v4l2_dev, "apply_changes failed\n");
509         return ret;
510 }
511 
512 /*
513  * Apply the changes set the go bit of DSS
514  */
515 static int omapvid_apply_changes(struct omap_vout_device *vout)
516 {
517         int i;
518         struct omap_overlay *ovl;
519         struct omapvideo_info *ovid = &vout->vid_info;
520 
521         for (i = 0; i < ovid->num_overlays; i++) {
522                 struct omap_dss_device *dssdev;
523 
524                 ovl = ovid->overlays[i];
525                 dssdev = ovl->get_device(ovl);
526                 if (!dssdev)
527                         return -EINVAL;
528                 ovl->manager->apply(ovl->manager);
529         }
530 
531         return 0;
532 }
533 
534 static int omapvid_handle_interlace_display(struct omap_vout_device *vout,
535                 unsigned int irqstatus, struct timeval timevalue)
536 {
537         u32 fid;
538 
539         if (vout->first_int) {
540                 vout->first_int = 0;
541                 goto err;
542         }
543 
544         if (irqstatus & DISPC_IRQ_EVSYNC_ODD)
545                 fid = 1;
546         else if (irqstatus & DISPC_IRQ_EVSYNC_EVEN)
547                 fid = 0;
548         else
549                 goto err;
550 
551         vout->field_id ^= 1;
552         if (fid != vout->field_id) {
553                 if (fid == 0)
554                         vout->field_id = fid;
555         } else if (0 == fid) {
556                 if (vout->cur_frm == vout->next_frm)
557                         goto err;
558 
559                 vout->cur_frm->ts = timevalue;
560                 vout->cur_frm->state = VIDEOBUF_DONE;
561                 wake_up_interruptible(&vout->cur_frm->done);
562                 vout->cur_frm = vout->next_frm;
563         } else {
564                 if (list_empty(&vout->dma_queue) ||
565                                 (vout->cur_frm != vout->next_frm))
566                         goto err;
567         }
568 
569         return vout->field_id;
570 err:
571         return 0;
572 }
573 
574 static void omap_vout_isr(void *arg, unsigned int irqstatus)
575 {
576         int ret, fid, mgr_id;
577         u32 addr, irq;
578         struct omap_overlay *ovl;
579         struct timeval timevalue;
580         struct omapvideo_info *ovid;
581         struct omap_dss_device *cur_display;
582         struct omap_vout_device *vout = (struct omap_vout_device *)arg;
583 
584         if (!vout->streaming)
585                 return;
586 
587         ovid = &vout->vid_info;
588         ovl = ovid->overlays[0];
589 
590         mgr_id = ovl->manager->id;
591 
592         /* get the display device attached to the overlay */
593         cur_display = ovl->get_device(ovl);
594 
595         if (!cur_display)
596                 return;
597 
598         spin_lock(&vout->vbq_lock);
599         v4l2_get_timestamp(&timevalue);
600 
601         switch (cur_display->type) {
602         case OMAP_DISPLAY_TYPE_DSI:
603         case OMAP_DISPLAY_TYPE_DPI:
604         case OMAP_DISPLAY_TYPE_DVI:
605                 if (mgr_id == OMAP_DSS_CHANNEL_LCD)
606                         irq = DISPC_IRQ_VSYNC;
607                 else if (mgr_id == OMAP_DSS_CHANNEL_LCD2)
608                         irq = DISPC_IRQ_VSYNC2;
609                 else
610                         goto vout_isr_err;
611 
612                 if (!(irqstatus & irq))
613                         goto vout_isr_err;
614                 break;
615         case OMAP_DISPLAY_TYPE_VENC:
616                 fid = omapvid_handle_interlace_display(vout, irqstatus,
617                                 timevalue);
618                 if (!fid)
619                         goto vout_isr_err;
620                 break;
621         case OMAP_DISPLAY_TYPE_HDMI:
622                 if (!(irqstatus & DISPC_IRQ_EVSYNC_EVEN))
623                         goto vout_isr_err;
624                 break;
625         default:
626                 goto vout_isr_err;
627         }
628 
629         if (!vout->first_int && (vout->cur_frm != vout->next_frm)) {
630                 vout->cur_frm->ts = timevalue;
631                 vout->cur_frm->state = VIDEOBUF_DONE;
632                 wake_up_interruptible(&vout->cur_frm->done);
633                 vout->cur_frm = vout->next_frm;
634         }
635 
636         vout->first_int = 0;
637         if (list_empty(&vout->dma_queue))
638                 goto vout_isr_err;
639 
640         vout->next_frm = list_entry(vout->dma_queue.next,
641                         struct videobuf_buffer, queue);
642         list_del(&vout->next_frm->queue);
643 
644         vout->next_frm->state = VIDEOBUF_ACTIVE;
645 
646         addr = (unsigned long) vout->queued_buf_addr[vout->next_frm->i]
647                 + vout->cropped_offset;
648 
649         /* First save the configuration in ovelray structure */
650         ret = omapvid_init(vout, addr);
651         if (ret) {
652                 printk(KERN_ERR VOUT_NAME
653                         "failed to set overlay info\n");
654                 goto vout_isr_err;
655         }
656 
657         /* Enable the pipeline and set the Go bit */
658         ret = omapvid_apply_changes(vout);
659         if (ret)
660                 printk(KERN_ERR VOUT_NAME "failed to change mode\n");
661 
662 vout_isr_err:
663         spin_unlock(&vout->vbq_lock);
664 }
665 
666 /* Video buffer call backs */
667 
668 /*
669  * Buffer setup function is called by videobuf layer when REQBUF ioctl is
670  * called. This is used to setup buffers and return size and count of
671  * buffers allocated. After the call to this buffer, videobuf layer will
672  * setup buffer queue depending on the size and count of buffers
673  */
674 static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count,
675                           unsigned int *size)
676 {
677         int startindex = 0, i, j;
678         u32 phy_addr = 0, virt_addr = 0;
679         struct omap_vout_device *vout = q->priv_data;
680         struct omapvideo_info *ovid = &vout->vid_info;
681         int vid_max_buf_size;
682 
683         if (!vout)
684                 return -EINVAL;
685 
686         vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize :
687                 video2_bufsize;
688 
689         if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type)
690                 return -EINVAL;
691 
692         startindex = (vout->vid == OMAP_VIDEO1) ?
693                 video1_numbuffers : video2_numbuffers;
694         if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
695                 *count = startindex;
696 
697         if (ovid->rotation_type == VOUT_ROT_VRFB) {
698                 if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
699                         return -ENOMEM;
700         }
701 
702         if (V4L2_MEMORY_MMAP != vout->memory)
703                 return 0;
704 
705         /* Now allocated the V4L2 buffers */
706         *size = PAGE_ALIGN(vout->pix.width * vout->pix.height * vout->bpp);
707         startindex = (vout->vid == OMAP_VIDEO1) ?
708                 video1_numbuffers : video2_numbuffers;
709 
710         /* Check the size of the buffer */
711         if (*size > vid_max_buf_size) {
712                 v4l2_err(&vout->vid_dev->v4l2_dev,
713                                 "buffer allocation mismatch [%u] [%u]\n",
714                                 *size, vout->buffer_size);
715                 return -ENOMEM;
716         }
717 
718         for (i = startindex; i < *count; i++) {
719                 vout->buffer_size = *size;
720 
721                 virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
722                                 &phy_addr);
723                 if (!virt_addr) {
724                         if (ovid->rotation_type == VOUT_ROT_NONE) {
725                                 break;
726                         } else {
727                                 if (!is_rotation_enabled(vout))
728                                         break;
729                         /* Free the VRFB buffers if no space for V4L2 buffers */
730                         for (j = i; j < *count; j++) {
731                                 omap_vout_free_buffer(
732                                                 vout->smsshado_virt_addr[j],
733                                                 vout->smsshado_size);
734                                 vout->smsshado_virt_addr[j] = 0;
735                                 vout->smsshado_phy_addr[j] = 0;
736                                 }
737                         }
738                 }
739                 vout->buf_virt_addr[i] = virt_addr;
740                 vout->buf_phy_addr[i] = phy_addr;
741         }
742         *count = vout->buffer_allocated = i;
743 
744         return 0;
745 }
746 
747 /*
748  * Free the V4L2 buffers additionally allocated than default
749  * number of buffers
750  */
751 static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
752 {
753         int num_buffers = 0, i;
754 
755         num_buffers = (vout->vid == OMAP_VIDEO1) ?
756                 video1_numbuffers : video2_numbuffers;
757 
758         for (i = num_buffers; i < vout->buffer_allocated; i++) {
759                 if (vout->buf_virt_addr[i])
760                         omap_vout_free_buffer(vout->buf_virt_addr[i],
761                                         vout->buffer_size);
762 
763                 vout->buf_virt_addr[i] = 0;
764                 vout->buf_phy_addr[i] = 0;
765         }
766         vout->buffer_allocated = num_buffers;
767 }
768 
769 /*
770  * This function will be called when VIDIOC_QBUF ioctl is called.
771  * It prepare buffers before give out for the display. This function
772  * converts user space virtual address into physical address if userptr memory
773  * exchange mechanism is used. If rotation is enabled, it copies entire
774  * buffer into VRFB memory space before giving it to the DSS.
775  */
776 static int omap_vout_buffer_prepare(struct videobuf_queue *q,
777                         struct videobuf_buffer *vb,
778                         enum v4l2_field field)
779 {
780         struct omap_vout_device *vout = q->priv_data;
781         struct omapvideo_info *ovid = &vout->vid_info;
782 
783         if (VIDEOBUF_NEEDS_INIT == vb->state) {
784                 vb->width = vout->pix.width;
785                 vb->height = vout->pix.height;
786                 vb->size = vb->width * vb->height * vout->bpp;
787                 vb->field = field;
788         }
789         vb->state = VIDEOBUF_PREPARED;
790         /* if user pointer memory mechanism is used, get the physical
791          * address of the buffer
792          */
793         if (V4L2_MEMORY_USERPTR == vb->memory) {
794                 if (0 == vb->baddr)
795                         return -EINVAL;
796                 /* Physical address */
797                 vout->queued_buf_addr[vb->i] = (u8 *)
798                         omap_vout_uservirt_to_phys(vb->baddr);
799         } else {
800                 u32 addr, dma_addr;
801                 unsigned long size;
802 
803                 addr = (unsigned long) vout->buf_virt_addr[vb->i];
804                 size = (unsigned long) vb->size;
805 
806                 dma_addr = dma_map_single(vout->vid_dev->v4l2_dev.dev, (void *) addr,
807                                 size, DMA_TO_DEVICE);
808                 if (dma_mapping_error(vout->vid_dev->v4l2_dev.dev, dma_addr))
809                         v4l2_err(&vout->vid_dev->v4l2_dev, "dma_map_single failed\n");
810 
811                 vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
812         }
813 
814         if (ovid->rotation_type == VOUT_ROT_VRFB)
815                 return omap_vout_prepare_vrfb(vout, vb);
816         else
817                 return 0;
818 }
819 
820 /*
821  * Buffer queue function will be called from the videobuf layer when _QBUF
822  * ioctl is called. It is used to enqueue buffer, which is ready to be
823  * displayed.
824  */
825 static void omap_vout_buffer_queue(struct videobuf_queue *q,
826                           struct videobuf_buffer *vb)
827 {
828         struct omap_vout_device *vout = q->priv_data;
829 
830         /* Driver is also maintainig a queue. So enqueue buffer in the driver
831          * queue */
832         list_add_tail(&vb->queue, &vout->dma_queue);
833 
834         vb->state = VIDEOBUF_QUEUED;
835 }
836 
837 /*
838  * Buffer release function is called from videobuf layer to release buffer
839  * which are already allocated
840  */
841 static void omap_vout_buffer_release(struct videobuf_queue *q,
842                             struct videobuf_buffer *vb)
843 {
844         struct omap_vout_device *vout = q->priv_data;
845 
846         vb->state = VIDEOBUF_NEEDS_INIT;
847 
848         if (V4L2_MEMORY_MMAP != vout->memory)
849                 return;
850 }
851 
852 /*
853  *  File operations
854  */
855 static unsigned int omap_vout_poll(struct file *file,
856                                    struct poll_table_struct *wait)
857 {
858         struct omap_vout_device *vout = file->private_data;
859         struct videobuf_queue *q = &vout->vbq;
860 
861         return videobuf_poll_stream(file, q, wait);
862 }
863 
864 static void omap_vout_vm_open(struct vm_area_struct *vma)
865 {
866         struct omap_vout_device *vout = vma->vm_private_data;
867 
868         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
869                 "vm_open [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
870         vout->mmap_count++;
871 }
872 
873 static void omap_vout_vm_close(struct vm_area_struct *vma)
874 {
875         struct omap_vout_device *vout = vma->vm_private_data;
876 
877         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
878                 "vm_close [vma=%08lx-%08lx]\n", vma->vm_start, vma->vm_end);
879         vout->mmap_count--;
880 }
881 
882 static struct vm_operations_struct omap_vout_vm_ops = {
883         .open   = omap_vout_vm_open,
884         .close  = omap_vout_vm_close,
885 };
886 
887 static int omap_vout_mmap(struct file *file, struct vm_area_struct *vma)
888 {
889         int i;
890         void *pos;
891         unsigned long start = vma->vm_start;
892         unsigned long size = (vma->vm_end - vma->vm_start);
893         struct omap_vout_device *vout = file->private_data;
894         struct videobuf_queue *q = &vout->vbq;
895 
896         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
897                         " %s pgoff=0x%lx, start=0x%lx, end=0x%lx\n", __func__,
898                         vma->vm_pgoff, vma->vm_start, vma->vm_end);
899 
900         /* look for the buffer to map */
901         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
902                 if (NULL == q->bufs[i])
903                         continue;
904                 if (V4L2_MEMORY_MMAP != q->bufs[i]->memory)
905                         continue;
906                 if (q->bufs[i]->boff == (vma->vm_pgoff << PAGE_SHIFT))
907                         break;
908         }
909 
910         if (VIDEO_MAX_FRAME == i) {
911                 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev,
912                                 "offset invalid [offset=0x%lx]\n",
913                                 (vma->vm_pgoff << PAGE_SHIFT));
914                 return -EINVAL;
915         }
916         /* Check the size of the buffer */
917         if (size > vout->buffer_size) {
918                 v4l2_err(&vout->vid_dev->v4l2_dev,
919                                 "insufficient memory [%lu] [%u]\n",
920                                 size, vout->buffer_size);
921                 return -ENOMEM;
922         }
923 
924         q->bufs[i]->baddr = vma->vm_start;
925 
926         vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
927         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
928         vma->vm_ops = &omap_vout_vm_ops;
929         vma->vm_private_data = (void *) vout;
930         pos = (void *)vout->buf_virt_addr[i];
931         vma->vm_pgoff = virt_to_phys((void *)pos) >> PAGE_SHIFT;
932         while (size > 0) {
933                 unsigned long pfn;
934                 pfn = virt_to_phys((void *) pos) >> PAGE_SHIFT;
935                 if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
936                         return -EAGAIN;
937                 start += PAGE_SIZE;
938                 pos += PAGE_SIZE;
939                 size -= PAGE_SIZE;
940         }
941         vout->mmap_count++;
942         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
943 
944         return 0;
945 }
946 
947 static int omap_vout_release(struct file *file)
948 {
949         unsigned int ret, i;
950         struct videobuf_queue *q;
951         struct omapvideo_info *ovid;
952         struct omap_vout_device *vout = file->private_data;
953 
954         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
955         ovid = &vout->vid_info;
956 
957         if (!vout)
958                 return 0;
959 
960         q = &vout->vbq;
961         /* Disable all the overlay managers connected with this interface */
962         for (i = 0; i < ovid->num_overlays; i++) {
963                 struct omap_overlay *ovl = ovid->overlays[i];
964                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
965 
966                 if (dssdev)
967                         ovl->disable(ovl);
968         }
969         /* Turn off the pipeline */
970         ret = omapvid_apply_changes(vout);
971         if (ret)
972                 v4l2_warn(&vout->vid_dev->v4l2_dev,
973                                 "Unable to apply changes\n");
974 
975         /* Free all buffers */
976         omap_vout_free_extra_buffers(vout);
977 
978         /* Free the VRFB buffers only if they are allocated
979          * during reqbufs.  Don't free if init time allocated
980          */
981         if (ovid->rotation_type == VOUT_ROT_VRFB) {
982                 if (!vout->vrfb_static_allocation)
983                         omap_vout_free_vrfb_buffers(vout);
984         }
985         videobuf_mmap_free(q);
986 
987         /* Even if apply changes fails we should continue
988            freeing allocated memory */
989         if (vout->streaming) {
990                 u32 mask = 0;
991 
992                 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN |
993                         DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_VSYNC2;
994                 omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
995                 vout->streaming = 0;
996 
997                 videobuf_streamoff(q);
998                 videobuf_queue_cancel(q);
999         }
1000 
1001         if (vout->mmap_count != 0)
1002                 vout->mmap_count = 0;
1003 
1004         vout->opened -= 1;
1005         file->private_data = NULL;
1006 
1007         if (vout->buffer_allocated)
1008                 videobuf_mmap_free(q);
1009 
1010         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1011         return ret;
1012 }
1013 
1014 static int omap_vout_open(struct file *file)
1015 {
1016         struct videobuf_queue *q;
1017         struct omap_vout_device *vout = NULL;
1018 
1019         vout = video_drvdata(file);
1020         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
1021 
1022         if (vout == NULL)
1023                 return -ENODEV;
1024 
1025         /* for now, we only support single open */
1026         if (vout->opened)
1027                 return -EBUSY;
1028 
1029         vout->opened += 1;
1030 
1031         file->private_data = vout;
1032         vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1033 
1034         q = &vout->vbq;
1035         video_vbq_ops.buf_setup = omap_vout_buffer_setup;
1036         video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
1037         video_vbq_ops.buf_release = omap_vout_buffer_release;
1038         video_vbq_ops.buf_queue = omap_vout_buffer_queue;
1039         spin_lock_init(&vout->vbq_lock);
1040 
1041         videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
1042                         &vout->vbq_lock, vout->type, V4L2_FIELD_NONE,
1043                         sizeof(struct videobuf_buffer), vout, NULL);
1044 
1045         v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Exiting %s\n", __func__);
1046         return 0;
1047 }
1048 
1049 /*
1050  * V4L2 ioctls
1051  */
1052 static int vidioc_querycap(struct file *file, void *fh,
1053                 struct v4l2_capability *cap)
1054 {
1055         struct omap_vout_device *vout = fh;
1056 
1057         strlcpy(cap->driver, VOUT_NAME, sizeof(cap->driver));
1058         strlcpy(cap->card, vout->vfd->name, sizeof(cap->card));
1059         cap->bus_info[0] = '\0';
1060         cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OUTPUT |
1061                 V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
1062 
1063         return 0;
1064 }
1065 
1066 static int vidioc_enum_fmt_vid_out(struct file *file, void *fh,
1067                         struct v4l2_fmtdesc *fmt)
1068 {
1069         int index = fmt->index;
1070 
1071         if (index >= NUM_OUTPUT_FORMATS)
1072                 return -EINVAL;
1073 
1074         fmt->flags = omap_formats[index].flags;
1075         strlcpy(fmt->description, omap_formats[index].description,
1076                         sizeof(fmt->description));
1077         fmt->pixelformat = omap_formats[index].pixelformat;
1078 
1079         return 0;
1080 }
1081 
1082 static int vidioc_g_fmt_vid_out(struct file *file, void *fh,
1083                         struct v4l2_format *f)
1084 {
1085         struct omap_vout_device *vout = fh;
1086 
1087         f->fmt.pix = vout->pix;
1088         return 0;
1089 
1090 }
1091 
1092 static int vidioc_try_fmt_vid_out(struct file *file, void *fh,
1093                         struct v4l2_format *f)
1094 {
1095         struct omap_overlay *ovl;
1096         struct omapvideo_info *ovid;
1097         struct omap_video_timings *timing;
1098         struct omap_vout_device *vout = fh;
1099         struct omap_dss_device *dssdev;
1100 
1101         ovid = &vout->vid_info;
1102         ovl = ovid->overlays[0];
1103         /* get the display device attached to the overlay */
1104         dssdev = ovl->get_device(ovl);
1105 
1106         if (!dssdev)
1107                 return -EINVAL;
1108 
1109         timing = &dssdev->panel.timings;
1110 
1111         vout->fbuf.fmt.height = timing->y_res;
1112         vout->fbuf.fmt.width = timing->x_res;
1113 
1114         omap_vout_try_format(&f->fmt.pix);
1115         return 0;
1116 }
1117 
1118 static int vidioc_s_fmt_vid_out(struct file *file, void *fh,
1119                         struct v4l2_format *f)
1120 {
1121         int ret, bpp;
1122         struct omap_overlay *ovl;
1123         struct omapvideo_info *ovid;
1124         struct omap_video_timings *timing;
1125         struct omap_vout_device *vout = fh;
1126         struct omap_dss_device *dssdev;
1127 
1128         if (vout->streaming)
1129                 return -EBUSY;
1130 
1131         mutex_lock(&vout->lock);
1132 
1133         ovid = &vout->vid_info;
1134         ovl = ovid->overlays[0];
1135         dssdev = ovl->get_device(ovl);
1136 
1137         /* get the display device attached to the overlay */
1138         if (!dssdev) {
1139                 ret = -EINVAL;
1140                 goto s_fmt_vid_out_exit;
1141         }
1142         timing = &dssdev->panel.timings;
1143 
1144         /* We dont support RGB24-packed mode if vrfb rotation
1145          * is enabled*/
1146         if ((is_rotation_enabled(vout)) &&
1147                         f->fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1148                 ret = -EINVAL;
1149                 goto s_fmt_vid_out_exit;
1150         }
1151 
1152         /* get the framebuffer parameters */
1153 
1154         if (is_rotation_90_or_270(vout)) {
1155                 vout->fbuf.fmt.height = timing->x_res;
1156                 vout->fbuf.fmt.width = timing->y_res;
1157         } else {
1158                 vout->fbuf.fmt.height = timing->y_res;
1159                 vout->fbuf.fmt.width = timing->x_res;
1160         }
1161 
1162         /* change to samller size is OK */
1163 
1164         bpp = omap_vout_try_format(&f->fmt.pix);
1165         f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height * bpp;
1166 
1167         /* try & set the new output format */
1168         vout->bpp = bpp;
1169         vout->pix = f->fmt.pix;
1170         vout->vrfb_bpp = 1;
1171 
1172         /* If YUYV then vrfb bpp is 2, for  others its 1 */
1173         if (V4L2_PIX_FMT_YUYV == vout->pix.pixelformat ||
1174                         V4L2_PIX_FMT_UYVY == vout->pix.pixelformat)
1175                 vout->vrfb_bpp = 2;
1176 
1177         /* set default crop and win */
1178         omap_vout_new_format(&vout->pix, &vout->fbuf, &vout->crop, &vout->win);
1179 
1180         ret = 0;
1181 
1182 s_fmt_vid_out_exit:
1183         mutex_unlock(&vout->lock);
1184         return ret;
1185 }
1186 
1187 static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh,
1188                         struct v4l2_format *f)
1189 {
1190         int ret = 0;
1191         struct omap_vout_device *vout = fh;
1192         struct omap_overlay *ovl;
1193         struct omapvideo_info *ovid;
1194         struct v4l2_window *win = &f->fmt.win;
1195 
1196         ovid = &vout->vid_info;
1197         ovl = ovid->overlays[0];
1198 
1199         ret = omap_vout_try_window(&vout->fbuf, win);
1200 
1201         if (!ret) {
1202                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1203                         win->global_alpha = 255;
1204                 else
1205                         win->global_alpha = f->fmt.win.global_alpha;
1206         }
1207 
1208         return ret;
1209 }
1210 
1211 static int vidioc_s_fmt_vid_overlay(struct file *file, void *fh,
1212                         struct v4l2_format *f)
1213 {
1214         int ret = 0;
1215         struct omap_overlay *ovl;
1216         struct omapvideo_info *ovid;
1217         struct omap_vout_device *vout = fh;
1218         struct v4l2_window *win = &f->fmt.win;
1219 
1220         mutex_lock(&vout->lock);
1221         ovid = &vout->vid_info;
1222         ovl = ovid->overlays[0];
1223 
1224         ret = omap_vout_new_window(&vout->crop, &vout->win, &vout->fbuf, win);
1225         if (!ret) {
1226                 /* Video1 plane does not support global alpha on OMAP3 */
1227                 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1228                         vout->win.global_alpha = 255;
1229                 else
1230                         vout->win.global_alpha = f->fmt.win.global_alpha;
1231 
1232                 vout->win.chromakey = f->fmt.win.chromakey;
1233         }
1234         mutex_unlock(&vout->lock);
1235         return ret;
1236 }
1237 
1238 static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh,
1239                         struct v4l2_format *f)
1240 {
1241         u32 key_value =  0;
1242         struct omap_overlay *ovl;
1243         struct omapvideo_info *ovid;
1244         struct omap_vout_device *vout = fh;
1245         struct omap_overlay_manager_info info;
1246         struct v4l2_window *win = &f->fmt.win;
1247 
1248         ovid = &vout->vid_info;
1249         ovl = ovid->overlays[0];
1250 
1251         win->w = vout->win.w;
1252         win->field = vout->win.field;
1253         win->global_alpha = vout->win.global_alpha;
1254 
1255         if (ovl->manager && ovl->manager->get_manager_info) {
1256                 ovl->manager->get_manager_info(ovl->manager, &info);
1257                 key_value = info.trans_key;
1258         }
1259         win->chromakey = key_value;
1260         return 0;
1261 }
1262 
1263 static int vidioc_cropcap(struct file *file, void *fh,
1264                 struct v4l2_cropcap *cropcap)
1265 {
1266         struct omap_vout_device *vout = fh;
1267         struct v4l2_pix_format *pix = &vout->pix;
1268 
1269         if (cropcap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1270                 return -EINVAL;
1271 
1272         /* Width and height are always even */
1273         cropcap->bounds.width = pix->width & ~1;
1274         cropcap->bounds.height = pix->height & ~1;
1275 
1276         omap_vout_default_crop(&vout->pix, &vout->fbuf, &cropcap->defrect);
1277         cropcap->pixelaspect.numerator = 1;
1278         cropcap->pixelaspect.denominator = 1;
1279         return 0;
1280 }
1281 
1282 static int vidioc_g_crop(struct file *file, void *fh, struct v4l2_crop *crop)
1283 {
1284         struct omap_vout_device *vout = fh;
1285 
1286         if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1287                 return -EINVAL;
1288         crop->c = vout->crop;
1289         return 0;
1290 }
1291 
1292 static int vidioc_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop)
1293 {
1294         int ret = -EINVAL;
1295         struct omap_vout_device *vout = fh;
1296         struct omapvideo_info *ovid;
1297         struct omap_overlay *ovl;
1298         struct omap_video_timings *timing;
1299         struct omap_dss_device *dssdev;
1300 
1301         if (vout->streaming)
1302                 return -EBUSY;
1303 
1304         mutex_lock(&vout->lock);
1305         ovid = &vout->vid_info;
1306         ovl = ovid->overlays[0];
1307         /* get the display device attached to the overlay */
1308         dssdev = ovl->get_device(ovl);
1309 
1310         if (!dssdev) {
1311                 ret = -EINVAL;
1312                 goto s_crop_err;
1313         }
1314 
1315         timing = &dssdev->panel.timings;
1316 
1317         if (is_rotation_90_or_270(vout)) {
1318                 vout->fbuf.fmt.height = timing->x_res;
1319                 vout->fbuf.fmt.width = timing->y_res;
1320         } else {
1321                 vout->fbuf.fmt.height = timing->y_res;
1322                 vout->fbuf.fmt.width = timing->x_res;
1323         }
1324 
1325         if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1326                 ret = omap_vout_new_crop(&vout->pix, &vout->crop, &vout->win,
1327                                 &vout->fbuf, &crop->c);
1328 
1329 s_crop_err:
1330         mutex_unlock(&vout->lock);
1331         return ret;
1332 }
1333 
1334 static int vidioc_queryctrl(struct file *file, void *fh,
1335                 struct v4l2_queryctrl *ctrl)
1336 {
1337         int ret = 0;
1338 
1339         switch (ctrl->id) {
1340         case V4L2_CID_ROTATE:
1341                 ret = v4l2_ctrl_query_fill(ctrl, 0, 270, 90, 0);
1342                 break;
1343         case V4L2_CID_BG_COLOR:
1344                 ret = v4l2_ctrl_query_fill(ctrl, 0, 0xFFFFFF, 1, 0);
1345                 break;
1346         case V4L2_CID_VFLIP:
1347                 ret = v4l2_ctrl_query_fill(ctrl, 0, 1, 1, 0);
1348                 break;
1349         default:
1350                 ctrl->name[0] = '\0';
1351                 ret = -EINVAL;
1352         }
1353         return ret;
1354 }
1355 
1356 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *ctrl)
1357 {
1358         int ret = 0;
1359         struct omap_vout_device *vout = fh;
1360 
1361         switch (ctrl->id) {
1362         case V4L2_CID_ROTATE:
1363                 ctrl->value = vout->control[0].value;
1364                 break;
1365         case V4L2_CID_BG_COLOR:
1366         {
1367                 struct omap_overlay_manager_info info;
1368                 struct omap_overlay *ovl;
1369 
1370                 ovl = vout->vid_info.overlays[0];
1371                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1372                         ret = -EINVAL;
1373                         break;
1374                 }
1375 
1376                 ovl->manager->get_manager_info(ovl->manager, &info);
1377                 ctrl->value = info.default_color;
1378                 break;
1379         }
1380         case V4L2_CID_VFLIP:
1381                 ctrl->value = vout->control[2].value;
1382                 break;
1383         default:
1384                 ret = -EINVAL;
1385         }
1386         return ret;
1387 }
1388 
1389 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a)
1390 {
1391         int ret = 0;
1392         struct omap_vout_device *vout = fh;
1393 
1394         switch (a->id) {
1395         case V4L2_CID_ROTATE:
1396         {
1397                 struct omapvideo_info *ovid;
1398                 int rotation = a->value;
1399 
1400                 ovid = &vout->vid_info;
1401 
1402                 mutex_lock(&vout->lock);
1403                 if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
1404                         mutex_unlock(&vout->lock);
1405                         ret = -ERANGE;
1406                         break;
1407                 }
1408 
1409                 if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1410                         mutex_unlock(&vout->lock);
1411                         ret = -EINVAL;
1412                         break;
1413                 }
1414 
1415                 if (v4l2_rot_to_dss_rot(rotation, &vout->rotation,
1416                                                         vout->mirror)) {
1417                         mutex_unlock(&vout->lock);
1418                         ret = -EINVAL;
1419                         break;
1420                 }
1421 
1422                 vout->control[0].value = rotation;
1423                 mutex_unlock(&vout->lock);
1424                 break;
1425         }
1426         case V4L2_CID_BG_COLOR:
1427         {
1428                 struct omap_overlay *ovl;
1429                 unsigned int  color = a->value;
1430                 struct omap_overlay_manager_info info;
1431 
1432                 ovl = vout->vid_info.overlays[0];
1433 
1434                 mutex_lock(&vout->lock);
1435                 if (!ovl->manager || !ovl->manager->get_manager_info) {
1436                         mutex_unlock(&vout->lock);
1437                         ret = -EINVAL;
1438                         break;
1439                 }
1440 
1441                 ovl->manager->get_manager_info(ovl->manager, &info);
1442                 info.default_color = color;
1443                 if (ovl->manager->set_manager_info(ovl->manager, &info)) {
1444                         mutex_unlock(&vout->lock);
1445                         ret = -EINVAL;
1446                         break;
1447                 }
1448 
1449                 vout->control[1].value = color;
1450                 mutex_unlock(&vout->lock);
1451                 break;
1452         }
1453         case V4L2_CID_VFLIP:
1454         {
1455                 struct omap_overlay *ovl;
1456                 struct omapvideo_info *ovid;
1457                 unsigned int  mirror = a->value;
1458 
1459                 ovid = &vout->vid_info;
1460                 ovl = ovid->overlays[0];
1461 
1462                 mutex_lock(&vout->lock);
1463                 if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
1464                         mutex_unlock(&vout->lock);
1465                         ret = -ERANGE;
1466                         break;
1467                 }
1468 
1469                 if (mirror  && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
1470                         mutex_unlock(&vout->lock);
1471                         ret = -EINVAL;
1472                         break;
1473                 }
1474                 vout->mirror = mirror;
1475                 vout->control[2].value = mirror;
1476                 mutex_unlock(&vout->lock);
1477                 break;
1478         }
1479         default:
1480                 ret = -EINVAL;
1481         }
1482         return ret;
1483 }
1484 
1485 static int vidioc_reqbufs(struct file *file, void *fh,
1486                         struct v4l2_requestbuffers *req)
1487 {
1488         int ret = 0;
1489         unsigned int i, num_buffers = 0;
1490         struct omap_vout_device *vout = fh;
1491         struct videobuf_queue *q = &vout->vbq;
1492 
1493         if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || (req->count < 0))
1494                 return -EINVAL;
1495         /* if memory is not mmp or userptr
1496            return error */
1497         if ((V4L2_MEMORY_MMAP != req->memory) &&
1498                         (V4L2_MEMORY_USERPTR != req->memory))
1499                 return -EINVAL;
1500 
1501         mutex_lock(&vout->lock);
1502         /* Cannot be requested when streaming is on */
1503         if (vout->streaming) {
1504                 ret = -EBUSY;
1505                 goto reqbuf_err;
1506         }
1507 
1508         /* If buffers are already allocated free them */
1509         if (q->bufs[0] && (V4L2_MEMORY_MMAP == q->bufs[0]->memory)) {
1510                 if (vout->mmap_count) {
1511                         ret = -EBUSY;
1512                         goto reqbuf_err;
1513                 }
1514                 num_buffers = (vout->vid == OMAP_VIDEO1) ?
1515                         video1_numbuffers : video2_numbuffers;
1516                 for (i = num_buffers; i < vout->buffer_allocated; i++) {
1517                         omap_vout_free_buffer(vout->buf_virt_addr[i],
1518                                         vout->buffer_size);
1519                         vout->buf_virt_addr[i] = 0;
1520                         vout->buf_phy_addr[i] = 0;
1521                 }
1522                 vout->buffer_allocated = num_buffers;
1523                 videobuf_mmap_free(q);
1524         } else if (q->bufs[0] && (V4L2_MEMORY_USERPTR == q->bufs[0]->memory)) {
1525                 if (vout->buffer_allocated) {
1526                         videobuf_mmap_free(q);
1527                         for (i = 0; i < vout->buffer_allocated; i++) {
1528                                 kfree(q->bufs[i]);
1529                                 q->bufs[i] = NULL;
1530                         }
1531                         vout->buffer_allocated = 0;
1532                 }
1533         }
1534 
1535         /*store the memory type in data structure */
1536         vout->memory = req->memory;
1537 
1538         INIT_LIST_HEAD(&vout->dma_queue);
1539 
1540         /* call videobuf_reqbufs api */
1541         ret = videobuf_reqbufs(q, req);
1542         if (ret < 0)
1543                 goto reqbuf_err;
1544 
1545         vout->buffer_allocated = req->count;
1546 
1547 reqbuf_err:
1548         mutex_unlock(&vout->lock);
1549         return ret;
1550 }
1551 
1552 static int vidioc_querybuf(struct file *file, void *fh,
1553                         struct v4l2_buffer *b)
1554 {
1555         struct omap_vout_device *vout = fh;
1556 
1557         return videobuf_querybuf(&vout->vbq, b);
1558 }
1559 
1560 static int vidioc_qbuf(struct file *file, void *fh,
1561                         struct v4l2_buffer *buffer)
1562 {
1563         struct omap_vout_device *vout = fh;
1564         struct videobuf_queue *q = &vout->vbq;
1565 
1566         if ((V4L2_BUF_TYPE_VIDEO_OUTPUT != buffer->type) ||
1567                         (buffer->index >= vout->buffer_allocated) ||
1568                         (q->bufs[buffer->index]->memory != buffer->memory)) {
1569                 return -EINVAL;
1570         }
1571         if (V4L2_MEMORY_USERPTR == buffer->memory) {
1572                 if ((buffer->length < vout->pix.sizeimage) ||
1573                                 (0 == buffer->m.userptr)) {
1574                         return -EINVAL;
1575                 }
1576         }
1577 
1578         if ((is_rotation_enabled(vout)) &&
1579                         vout->vrfb_dma_tx.req_status == DMA_CHAN_NOT_ALLOTED) {
1580                 v4l2_warn(&vout->vid_dev->v4l2_dev,
1581                                 "DMA Channel not allocated for Rotation\n");
1582                 return -EINVAL;
1583         }
1584 
1585         return videobuf_qbuf(q, buffer);
1586 }
1587 
1588 static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
1589 {
1590         struct omap_vout_device *vout = fh;
1591         struct videobuf_queue *q = &vout->vbq;
1592 
1593         int ret;
1594         u32 addr;
1595         unsigned long size;
1596         struct videobuf_buffer *vb;
1597 
1598         vb = q->bufs[b->index];
1599 
1600         if (!vout->streaming)
1601                 return -EINVAL;
1602 
1603         if (file->f_flags & O_NONBLOCK)
1604                 /* Call videobuf_dqbuf for non blocking mode */
1605                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 1);
1606         else
1607                 /* Call videobuf_dqbuf for  blocking mode */
1608                 ret = videobuf_dqbuf(q, (struct v4l2_buffer *)b, 0);
1609 
1610         addr = (unsigned long) vout->buf_phy_addr[vb->i];
1611         size = (unsigned long) vb->size;
1612         dma_unmap_single(vout->vid_dev->v4l2_dev.dev,  addr,
1613                                 size, DMA_TO_DEVICE);
1614         return ret;
1615 }
1616 
1617 static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i)
1618 {
1619         int ret = 0, j;
1620         u32 addr = 0, mask = 0;
1621         struct omap_vout_device *vout = fh;
1622         struct videobuf_queue *q = &vout->vbq;
1623         struct omapvideo_info *ovid = &vout->vid_info;
1624 
1625         mutex_lock(&vout->lock);
1626 
1627         if (vout->streaming) {
1628                 ret = -EBUSY;
1629                 goto streamon_err;
1630         }
1631 
1632         ret = videobuf_streamon(q);
1633         if (ret)
1634                 goto streamon_err;
1635 
1636         if (list_empty(&vout->dma_queue)) {
1637                 ret = -EIO;
1638                 goto streamon_err1;
1639         }
1640 
1641         /* Get the next frame from the buffer queue */
1642         vout->next_frm = vout->cur_frm = list_entry(vout->dma_queue.next,
1643                         struct videobuf_buffer, queue);
1644         /* Remove buffer from the buffer queue */
1645         list_del(&vout->cur_frm->queue);
1646         /* Mark state of the current frame to active */
1647         vout->cur_frm->state = VIDEOBUF_ACTIVE;
1648         /* Initialize field_id and started member */
1649         vout->field_id = 0;
1650 
1651         /* set flag here. Next QBUF will start DMA */
1652         vout->streaming = 1;
1653 
1654         vout->first_int = 1;
1655 
1656         if (omap_vout_calculate_offset(vout)) {
1657                 ret = -EINVAL;
1658                 goto streamon_err1;
1659         }
1660         addr = (unsigned long) vout->queued_buf_addr[vout->cur_frm->i]
1661                 + vout->cropped_offset;
1662 
1663         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1664                 | DISPC_IRQ_VSYNC2;
1665 
1666         /* First save the configuration in ovelray structure */
1667         ret = omapvid_init(vout, addr);
1668         if (ret) {
1669                 v4l2_err(&vout->vid_dev->v4l2_dev,
1670                                 "failed to set overlay info\n");
1671                 goto streamon_err1;
1672         }
1673 
1674         omap_dispc_register_isr(omap_vout_isr, vout, mask);
1675 
1676         /* Enable the pipeline and set the Go bit */
1677         ret = omapvid_apply_changes(vout);
1678         if (ret)
1679                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode\n");
1680 
1681         for (j = 0; j < ovid->num_overlays; j++) {
1682                 struct omap_overlay *ovl = ovid->overlays[j];
1683                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1684 
1685                 if (dssdev) {
1686                         ret = ovl->enable(ovl);
1687                         if (ret)
1688                                 goto streamon_err1;
1689                 }
1690         }
1691 
1692         ret = 0;
1693 
1694 streamon_err1:
1695         if (ret)
1696                 ret = videobuf_streamoff(q);
1697 streamon_err:
1698         mutex_unlock(&vout->lock);
1699         return ret;
1700 }
1701 
1702 static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i)
1703 {
1704         u32 mask = 0;
1705         int ret = 0, j;
1706         struct omap_vout_device *vout = fh;
1707         struct omapvideo_info *ovid = &vout->vid_info;
1708 
1709         if (!vout->streaming)
1710                 return -EINVAL;
1711 
1712         vout->streaming = 0;
1713         mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD
1714                 | DISPC_IRQ_VSYNC2;
1715 
1716         omap_dispc_unregister_isr(omap_vout_isr, vout, mask);
1717 
1718         for (j = 0; j < ovid->num_overlays; j++) {
1719                 struct omap_overlay *ovl = ovid->overlays[j];
1720                 struct omap_dss_device *dssdev = ovl->get_device(ovl);
1721 
1722                 if (dssdev)
1723                         ovl->disable(ovl);
1724         }
1725 
1726         /* Turn of the pipeline */
1727         ret = omapvid_apply_changes(vout);
1728         if (ret)
1729                 v4l2_err(&vout->vid_dev->v4l2_dev, "failed to change mode in"
1730                                 " streamoff\n");
1731 
1732         INIT_LIST_HEAD(&vout->dma_queue);
1733         ret = videobuf_streamoff(&vout->vbq);
1734 
1735         return ret;
1736 }
1737 
1738 static int vidioc_s_fbuf(struct file *file, void *fh,
1739                                 const struct v4l2_framebuffer *a)
1740 {
1741         int enable = 0;
1742         struct omap_overlay *ovl;
1743         struct omapvideo_info *ovid;
1744         struct omap_vout_device *vout = fh;
1745         struct omap_overlay_manager_info info;
1746         enum omap_dss_trans_key_type key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
1747 
1748         ovid = &vout->vid_info;
1749         ovl = ovid->overlays[0];
1750 
1751         /* OMAP DSS doesn't support Source and Destination color
1752            key together */
1753         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY) &&
1754                         (a->flags & V4L2_FBUF_FLAG_CHROMAKEY))
1755                 return -EINVAL;
1756         /* OMAP DSS Doesn't support the Destination color key
1757            and alpha blending together */
1758         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY) &&
1759                         (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA))
1760                 return -EINVAL;
1761 
1762         if ((a->flags & V4L2_FBUF_FLAG_SRC_CHROMAKEY)) {
1763                 vout->fbuf.flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1764                 key_type =  OMAP_DSS_COLOR_KEY_VID_SRC;
1765         } else
1766                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1767 
1768         if ((a->flags & V4L2_FBUF_FLAG_CHROMAKEY)) {
1769                 vout->fbuf.flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1770                 key_type =  OMAP_DSS_COLOR_KEY_GFX_DST;
1771         } else
1772                 vout->fbuf.flags &=  ~V4L2_FBUF_FLAG_CHROMAKEY;
1773 
1774         if (a->flags & (V4L2_FBUF_FLAG_CHROMAKEY |
1775                                 V4L2_FBUF_FLAG_SRC_CHROMAKEY))
1776                 enable = 1;
1777         else
1778                 enable = 0;
1779         if (ovl->manager && ovl->manager->get_manager_info &&
1780                         ovl->manager->set_manager_info) {
1781 
1782                 ovl->manager->get_manager_info(ovl->manager, &info);
1783                 info.trans_enabled = enable;
1784                 info.trans_key_type = key_type;
1785                 info.trans_key = vout->win.chromakey;
1786 
1787                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1788                         return -EINVAL;
1789         }
1790         if (a->flags & V4L2_FBUF_FLAG_LOCAL_ALPHA) {
1791                 vout->fbuf.flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1792                 enable = 1;
1793         } else {
1794                 vout->fbuf.flags &= ~V4L2_FBUF_FLAG_LOCAL_ALPHA;
1795                 enable = 0;
1796         }
1797         if (ovl->manager && ovl->manager->get_manager_info &&
1798                         ovl->manager->set_manager_info) {
1799                 ovl->manager->get_manager_info(ovl->manager, &info);
1800                 /* enable this only if there is no zorder cap */
1801                 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1802                         info.partial_alpha_enabled = enable;
1803                 if (ovl->manager->set_manager_info(ovl->manager, &info))
1804                         return -EINVAL;
1805         }
1806 
1807         return 0;
1808 }
1809 
1810 static int vidioc_g_fbuf(struct file *file, void *fh,
1811                 struct v4l2_framebuffer *a)
1812 {
1813         struct omap_overlay *ovl;
1814         struct omapvideo_info *ovid;
1815         struct omap_vout_device *vout = fh;
1816         struct omap_overlay_manager_info info;
1817 
1818         ovid = &vout->vid_info;
1819         ovl = ovid->overlays[0];
1820 
1821         /* The video overlay must stay within the framebuffer and can't be
1822            positioned independently. */
1823         a->flags = V4L2_FBUF_FLAG_OVERLAY;
1824         a->capability = V4L2_FBUF_CAP_LOCAL_ALPHA | V4L2_FBUF_CAP_CHROMAKEY
1825                 | V4L2_FBUF_CAP_SRC_CHROMAKEY;
1826 
1827         if (ovl->manager && ovl->manager->get_manager_info) {
1828                 ovl->manager->get_manager_info(ovl->manager, &info);
1829                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_VID_SRC)
1830                         a->flags |= V4L2_FBUF_FLAG_SRC_CHROMAKEY;
1831                 if (info.trans_key_type == OMAP_DSS_COLOR_KEY_GFX_DST)
1832                         a->flags |= V4L2_FBUF_FLAG_CHROMAKEY;
1833         }
1834         if (ovl->manager && ovl->manager->get_manager_info) {
1835                 ovl->manager->get_manager_info(ovl->manager, &info);
1836                 if (info.partial_alpha_enabled)
1837                         a->flags |= V4L2_FBUF_FLAG_LOCAL_ALPHA;
1838         }
1839 
1840         return 0;
1841 }
1842 
1843 static const struct v4l2_ioctl_ops vout_ioctl_ops = {
1844         .vidioc_querycap                        = vidioc_querycap,
1845         .vidioc_enum_fmt_vid_out                = vidioc_enum_fmt_vid_out,
1846         .vidioc_g_fmt_vid_out                   = vidioc_g_fmt_vid_out,
1847         .vidioc_try_fmt_vid_out                 = vidioc_try_fmt_vid_out,
1848         .vidioc_s_fmt_vid_out                   = vidioc_s_fmt_vid_out,
1849         .vidioc_queryctrl                       = vidioc_queryctrl,
1850         .vidioc_g_ctrl                          = vidioc_g_ctrl,
1851         .vidioc_s_fbuf                          = vidioc_s_fbuf,
1852         .vidioc_g_fbuf                          = vidioc_g_fbuf,
1853         .vidioc_s_ctrl                          = vidioc_s_ctrl,
1854         .vidioc_try_fmt_vid_out_overlay         = vidioc_try_fmt_vid_overlay,
1855         .vidioc_s_fmt_vid_out_overlay           = vidioc_s_fmt_vid_overlay,
1856         .vidioc_g_fmt_vid_out_overlay           = vidioc_g_fmt_vid_overlay,
1857         .vidioc_cropcap                         = vidioc_cropcap,
1858         .vidioc_g_crop                          = vidioc_g_crop,
1859         .vidioc_s_crop                          = vidioc_s_crop,
1860         .vidioc_reqbufs                         = vidioc_reqbufs,
1861         .vidioc_querybuf                        = vidioc_querybuf,
1862         .vidioc_qbuf                            = vidioc_qbuf,
1863         .vidioc_dqbuf                           = vidioc_dqbuf,
1864         .vidioc_streamon                        = vidioc_streamon,
1865         .vidioc_streamoff                       = vidioc_streamoff,
1866 };
1867 
1868 static const struct v4l2_file_operations omap_vout_fops = {
1869         .owner          = THIS_MODULE,
1870         .poll           = omap_vout_poll,
1871         .unlocked_ioctl = video_ioctl2,
1872         .mmap           = omap_vout_mmap,
1873         .open           = omap_vout_open,
1874         .release        = omap_vout_release,
1875 };
1876 
1877 /* Init functions used during driver initialization */
1878 /* Initial setup of video_data */
1879 static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
1880 {
1881         struct video_device *vfd;
1882         struct v4l2_pix_format *pix;
1883         struct v4l2_control *control;
1884         struct omap_overlay *ovl = vout->vid_info.overlays[0];
1885         struct omap_dss_device *display = ovl->get_device(ovl);
1886 
1887         /* set the default pix */
1888         pix = &vout->pix;
1889 
1890         /* Set the default picture of QVGA  */
1891         pix->width = QQVGA_WIDTH;
1892         pix->height = QQVGA_HEIGHT;
1893 
1894         /* Default pixel format is RGB 5-6-5 */
1895         pix->pixelformat = V4L2_PIX_FMT_RGB565;
1896         pix->field = V4L2_FIELD_ANY;
1897         pix->bytesperline = pix->width * 2;
1898         pix->sizeimage = pix->bytesperline * pix->height;
1899         pix->priv = 0;
1900         pix->colorspace = V4L2_COLORSPACE_JPEG;
1901 
1902         vout->bpp = RGB565_BPP;
1903         vout->fbuf.fmt.width  =  display->panel.timings.x_res;
1904         vout->fbuf.fmt.height =  display->panel.timings.y_res;
1905 
1906         /* Set the data structures for the overlay parameters*/
1907         vout->win.global_alpha = 255;
1908         vout->fbuf.flags = 0;
1909         vout->fbuf.capability = V4L2_FBUF_CAP_LOCAL_ALPHA |
1910                 V4L2_FBUF_CAP_SRC_CHROMAKEY | V4L2_FBUF_CAP_CHROMAKEY;
1911         vout->win.chromakey = 0;
1912 
1913         omap_vout_new_format(pix, &vout->fbuf, &vout->crop, &vout->win);
1914 
1915         /*Initialize the control variables for
1916           rotation, flipping and background color. */
1917         control = vout->control;
1918         control[0].id = V4L2_CID_ROTATE;
1919         control[0].value = 0;
1920         vout->rotation = 0;
1921         vout->mirror = 0;
1922         vout->control[2].id = V4L2_CID_HFLIP;
1923         vout->control[2].value = 0;
1924         if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
1925                 vout->vrfb_bpp = 2;
1926 
1927         control[1].id = V4L2_CID_BG_COLOR;
1928         control[1].value = 0;
1929 
1930         /* initialize the video_device struct */
1931         vfd = vout->vfd = video_device_alloc();
1932 
1933         if (!vfd) {
1934                 printk(KERN_ERR VOUT_NAME ": could not allocate"
1935                                 " video device struct\n");
1936                 return -ENOMEM;
1937         }
1938         vfd->release = video_device_release;
1939         vfd->ioctl_ops = &vout_ioctl_ops;
1940 
1941         strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
1942 
1943         vfd->fops = &omap_vout_fops;
1944         vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
1945         vfd->vfl_dir = VFL_DIR_TX;
1946         mutex_init(&vout->lock);
1947 
1948         vfd->minor = -1;
1949         return 0;
1950 
1951 }
1952 
1953 /* Setup video buffers */
1954 static int __init omap_vout_setup_video_bufs(struct platform_device *pdev,
1955                 int vid_num)
1956 {
1957         u32 numbuffers;
1958         int ret = 0, i;
1959         struct omapvideo_info *ovid;
1960         struct omap_vout_device *vout;
1961         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1962         struct omap2video_device *vid_dev =
1963                 container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
1964 
1965         vout = vid_dev->vouts[vid_num];
1966         ovid = &vout->vid_info;
1967 
1968         numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
1969         vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
1970         dev_info(&pdev->dev, "Buffer Size = %d\n", vout->buffer_size);
1971 
1972         for (i = 0; i < numbuffers; i++) {
1973                 vout->buf_virt_addr[i] =
1974                         omap_vout_alloc_buffer(vout->buffer_size,
1975                                         (u32 *) &vout->buf_phy_addr[i]);
1976                 if (!vout->buf_virt_addr[i]) {
1977                         numbuffers = i;
1978                         ret = -ENOMEM;
1979                         goto free_buffers;
1980                 }
1981         }
1982 
1983         vout->cropped_offset = 0;
1984 
1985         if (ovid->rotation_type == VOUT_ROT_VRFB) {
1986                 int static_vrfb_allocation = (vid_num == 0) ?
1987                         vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
1988                 ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
1989                                 static_vrfb_allocation);
1990         }
1991 
1992         return ret;
1993 
1994 free_buffers:
1995         for (i = 0; i < numbuffers; i++) {
1996                 omap_vout_free_buffer(vout->buf_virt_addr[i],
1997                                                 vout->buffer_size);
1998                 vout->buf_virt_addr[i] = 0;
1999                 vout->buf_phy_addr[i] = 0;
2000         }
2001         return ret;
2002 
2003 }
2004 
2005 /* Create video out devices */
2006 static int __init omap_vout_create_video_devices(struct platform_device *pdev)
2007 {
2008         int ret = 0, k;
2009         struct omap_vout_device *vout;
2010         struct video_device *vfd = NULL;
2011         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2012         struct omap2video_device *vid_dev = container_of(v4l2_dev,
2013                         struct omap2video_device, v4l2_dev);
2014 
2015         for (k = 0; k < pdev->num_resources; k++) {
2016 
2017                 vout = kzalloc(sizeof(struct omap_vout_device), GFP_KERNEL);
2018                 if (!vout) {
2019                         dev_err(&pdev->dev, ": could not allocate memory\n");
2020                         return -ENOMEM;
2021                 }
2022 
2023                 vout->vid = k;
2024                 vid_dev->vouts[k] = vout;
2025                 vout->vid_dev = vid_dev;
2026                 /* Select video2 if only 1 overlay is controlled by V4L2 */
2027                 if (pdev->num_resources == 1)
2028                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 2];
2029                 else
2030                         /* Else select video1 and video2 one by one. */
2031                         vout->vid_info.overlays[0] = vid_dev->overlays[k + 1];
2032                 vout->vid_info.num_overlays = 1;
2033                 vout->vid_info.id = k + 1;
2034 
2035                 /* Set VRFB as rotation_type for omap2 and omap3 */
2036                 if (omap_vout_dss_omap24xx() || omap_vout_dss_omap34xx())
2037                         vout->vid_info.rotation_type = VOUT_ROT_VRFB;
2038 
2039                 /* Setup the default configuration for the video devices
2040                  */
2041                 if (omap_vout_setup_video_data(vout) != 0) {
2042                         ret = -ENOMEM;
2043                         goto error;
2044                 }
2045 
2046                 /* Allocate default number of buffers for the video streaming
2047                  * and reserve the VRFB space for rotation
2048                  */
2049                 if (omap_vout_setup_video_bufs(pdev, k) != 0) {
2050                         ret = -ENOMEM;
2051                         goto error1;
2052                 }
2053 
2054                 /* Register the Video device with V4L2
2055                  */
2056                 vfd = vout->vfd;
2057                 if (video_register_device(vfd, VFL_TYPE_GRABBER, -1) < 0) {
2058                         dev_err(&pdev->dev, ": Could not register "
2059                                         "Video for Linux device\n");
2060                         vfd->minor = -1;
2061                         ret = -ENODEV;
2062                         goto error2;
2063                 }
2064                 video_set_drvdata(vfd, vout);
2065 
2066                 dev_info(&pdev->dev, ": registered and initialized"
2067                                 " video device %d\n", vfd->minor);
2068                 if (k == (pdev->num_resources - 1))
2069                         return 0;
2070 
2071                 continue;
2072 error2:
2073                 if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
2074                         omap_vout_release_vrfb(vout);
2075                 omap_vout_free_buffers(vout);
2076 error1:
2077                 video_device_release(vfd);
2078 error:
2079                 kfree(vout);
2080                 return ret;
2081         }
2082 
2083         return -ENODEV;
2084 }
2085 /* Driver functions */
2086 static void omap_vout_cleanup_device(struct omap_vout_device *vout)
2087 {
2088         struct video_device *vfd;
2089         struct omapvideo_info *ovid;
2090 
2091         if (!vout)
2092                 return;
2093 
2094         vfd = vout->vfd;
2095         ovid = &vout->vid_info;
2096         if (vfd) {
2097                 if (!video_is_registered(vfd)) {
2098                         /*
2099                          * The device was never registered, so release the
2100                          * video_device struct directly.
2101                          */
2102                         video_device_release(vfd);
2103                 } else {
2104                         /*
2105                          * The unregister function will release the video_device
2106                          * struct as well as unregistering it.
2107                          */
2108                         video_unregister_device(vfd);
2109                 }
2110         }
2111         if (ovid->rotation_type == VOUT_ROT_VRFB) {
2112                 omap_vout_release_vrfb(vout);
2113                 /* Free the VRFB buffer if allocated
2114                  * init time
2115                  */
2116                 if (vout->vrfb_static_allocation)
2117                         omap_vout_free_vrfb_buffers(vout);
2118         }
2119         omap_vout_free_buffers(vout);
2120 
2121         kfree(vout);
2122 }
2123 
2124 static int omap_vout_remove(struct platform_device *pdev)
2125 {
2126         int k;
2127         struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
2128         struct omap2video_device *vid_dev = container_of(v4l2_dev, struct
2129                         omap2video_device, v4l2_dev);
2130 
2131         v4l2_device_unregister(v4l2_dev);
2132         for (k = 0; k < pdev->num_resources; k++)
2133                 omap_vout_cleanup_device(vid_dev->vouts[k]);
2134 
2135         for (k = 0; k < vid_dev->num_displays; k++) {
2136                 if (vid_dev->displays[k]->state != OMAP_DSS_DISPLAY_DISABLED)
2137                         vid_dev->displays[k]->driver->disable(vid_dev->displays[k]);
2138 
2139                 omap_dss_put_device(vid_dev->displays[k]);
2140         }
2141         kfree(vid_dev);
2142         return 0;
2143 }
2144 
2145 static int __init omap_vout_probe(struct platform_device *pdev)
2146 {
2147         int ret = 0, i;
2148         struct omap_overlay *ovl;
2149         struct omap_dss_device *dssdev = NULL;
2150         struct omap_dss_device *def_display;
2151         struct omap2video_device *vid_dev = NULL;
2152 
2153         if (omapdss_is_initialized() == false)
2154                 return -EPROBE_DEFER;
2155 
2156         ret = omapdss_compat_init();
2157         if (ret) {
2158                 dev_err(&pdev->dev, "failed to init dss\n");
2159                 return ret;
2160         }
2161 
2162         if (pdev->num_resources == 0) {
2163                 dev_err(&pdev->dev, "probed for an unknown device\n");
2164                 ret = -ENODEV;
2165                 goto err_dss_init;
2166         }
2167 
2168         vid_dev = kzalloc(sizeof(struct omap2video_device), GFP_KERNEL);
2169         if (vid_dev == NULL) {
2170                 ret = -ENOMEM;
2171                 goto err_dss_init;
2172         }
2173 
2174         vid_dev->num_displays = 0;
2175         for_each_dss_dev(dssdev) {
2176                 omap_dss_get_device(dssdev);
2177 
2178                 if (!dssdev->driver) {
2179                         dev_warn(&pdev->dev, "no driver for display: %s\n",
2180                                         dssdev->name);
2181                         omap_dss_put_device(dssdev);
2182                         continue;
2183                 }
2184 
2185                 vid_dev->displays[vid_dev->num_displays++] = dssdev;
2186         }
2187 
2188         if (vid_dev->num_displays == 0) {
2189                 dev_err(&pdev->dev, "no displays\n");
2190                 ret = -EINVAL;
2191                 goto probe_err0;
2192         }
2193 
2194         vid_dev->num_overlays = omap_dss_get_num_overlays();
2195         for (i = 0; i < vid_dev->num_overlays; i++)
2196                 vid_dev->overlays[i] = omap_dss_get_overlay(i);
2197 
2198         vid_dev->num_managers = omap_dss_get_num_overlay_managers();
2199         for (i = 0; i < vid_dev->num_managers; i++)
2200                 vid_dev->managers[i] = omap_dss_get_overlay_manager(i);
2201 
2202         /* Get the Video1 overlay and video2 overlay.
2203          * Setup the Display attached to that overlays
2204          */
2205         for (i = 1; i < vid_dev->num_overlays; i++) {
2206                 ovl = omap_dss_get_overlay(i);
2207                 dssdev = ovl->get_device(ovl);
2208 
2209                 if (dssdev) {
2210                         def_display = dssdev;
2211                 } else {
2212                         dev_warn(&pdev->dev, "cannot find display\n");
2213                         def_display = NULL;
2214                 }
2215                 if (def_display) {
2216                         struct omap_dss_driver *dssdrv = def_display->driver;
2217 
2218                         ret = dssdrv->enable(def_display);
2219                         if (ret) {
2220                                 /* Here we are not considering a error
2221                                  *  as display may be enabled by frame
2222                                  *  buffer driver
2223                                  */
2224                                 dev_warn(&pdev->dev,
2225                                         "'%s' Display already enabled\n",
2226                                         def_display->name);
2227                         }
2228                 }
2229         }
2230 
2231         if (v4l2_device_register(&pdev->dev, &vid_dev->v4l2_dev) < 0) {
2232                 dev_err(&pdev->dev, "v4l2_device_register failed\n");
2233                 ret = -ENODEV;
2234                 goto probe_err1;
2235         }
2236 
2237         ret = omap_vout_create_video_devices(pdev);
2238         if (ret)
2239                 goto probe_err2;
2240 
2241         for (i = 0; i < vid_dev->num_displays; i++) {
2242                 struct omap_dss_device *display = vid_dev->displays[i];
2243 
2244                 if (display->driver->update)
2245                         display->driver->update(display, 0, 0,
2246                                         display->panel.timings.x_res,
2247                                         display->panel.timings.y_res);
2248         }
2249         return 0;
2250 
2251 probe_err2:
2252         v4l2_device_unregister(&vid_dev->v4l2_dev);
2253 probe_err1:
2254         for (i = 1; i < vid_dev->num_overlays; i++) {
2255                 def_display = NULL;
2256                 ovl = omap_dss_get_overlay(i);
2257                 dssdev = ovl->get_device(ovl);
2258 
2259                 if (dssdev)
2260                         def_display = dssdev;
2261 
2262                 if (def_display && def_display->driver)
2263                         def_display->driver->disable(def_display);
2264         }
2265 probe_err0:
2266         kfree(vid_dev);
2267 err_dss_init:
2268         omapdss_compat_uninit();
2269         return ret;
2270 }
2271 
2272 static struct platform_driver omap_vout_driver = {
2273         .driver = {
2274                 .name = VOUT_NAME,
2275         },
2276         .remove = omap_vout_remove,
2277 };
2278 
2279 static int __init omap_vout_init(void)
2280 {
2281         if (platform_driver_probe(&omap_vout_driver, omap_vout_probe) != 0) {
2282                 printk(KERN_ERR VOUT_NAME ":Could not register Video driver\n");
2283                 return -EINVAL;
2284         }
2285         return 0;
2286 }
2287 
2288 static void omap_vout_cleanup(void)
2289 {
2290         platform_driver_unregister(&omap_vout_driver);
2291 }
2292 
2293 late_initcall(omap_vout_init);
2294 module_exit(omap_vout_cleanup);
2295 

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