Version:  2.0.40 2.2.26 2.4.37 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 3.16 3.17 3.18

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

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